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-rw-r--r--include/authz/base.h15
-rw-r--r--include/authz/list.h17
-rw-r--r--include/authz/listfile.h17
-rw-r--r--include/authz/pamacct.h17
-rw-r--r--include/authz/simple.h17
-rw-r--r--include/block/throttle-groups.h4
-rw-r--r--include/chardev/char-fd.h9
-rw-r--r--include/chardev/char-win.h9
-rw-r--r--include/chardev/char.h12
-rw-r--r--include/chardev/spice.h9
-rw-r--r--include/crypto/secret.h6
-rw-r--r--include/crypto/secret_common.h12
-rw-r--r--include/crypto/secret_keyring.h24
-rw-r--r--include/crypto/tls-cipher-suites.h9
-rw-r--r--include/crypto/tlscreds.h6
-rw-r--r--include/crypto/tlscredsanon.h7
-rw-r--r--include/crypto/tlscredspsk.h7
-rw-r--r--include/crypto/tlscredsx509.h7
-rw-r--r--include/exec/memory.h21
-rw-r--r--include/hw/acpi/acpi_dev_interface.h13
-rw-r--r--include/hw/acpi/generic_event_device.h10
-rw-r--r--include/hw/acpi/vmgenid.h13
-rw-r--r--include/hw/adc/stm32f2xx_adc.h10
-rw-r--r--include/hw/arm/allwinner-a10.h9
-rw-r--r--include/hw/arm/allwinner-h3.h8
-rw-r--r--include/hw/arm/armsse.h16
-rw-r--r--include/hw/arm/armv7m.h17
-rw-r--r--include/hw/arm/aspeed.h14
-rw-r--r--include/hw/arm/aspeed_soc.h18
-rw-r--r--include/hw/arm/bcm2835_peripherals.h10
-rw-r--r--include/hw/arm/bcm2836.h18
-rw-r--r--include/hw/arm/digic.h9
-rw-r--r--include/hw/arm/exynos4210.h10
-rw-r--r--include/hw/arm/fsl-imx25.h9
-rw-r--r--include/hw/arm/fsl-imx31.h9
-rw-r--r--include/hw/arm/fsl-imx6.h9
-rw-r--r--include/hw/arm/fsl-imx6ul.h9
-rw-r--r--include/hw/arm/fsl-imx7.h9
-rw-r--r--include/hw/arm/linux-boot-if.h11
-rw-r--r--include/hw/arm/msf2-soc.h9
-rw-r--r--include/hw/arm/nrf51_soc.h10
-rw-r--r--include/hw/arm/omap.h20
-rw-r--r--include/hw/arm/pxa.h15
-rw-r--r--include/hw/arm/smmu-common.h18
-rw-r--r--include/hw/arm/smmuv3.h18
-rw-r--r--include/hw/arm/stm32f205_soc.h10
-rw-r--r--include/hw/arm/stm32f405_soc.h10
-rw-r--r--include/hw/arm/virt.h19
-rw-r--r--include/hw/arm/xlnx-versal.h9
-rw-r--r--include/hw/arm/xlnx-zynqmp.h10
-rw-r--r--include/hw/block/flash.h13
-rw-r--r--include/hw/block/swim.h15
-rw-r--r--include/hw/boards.h8
-rw-r--r--include/hw/char/avr_usart.h10
-rw-r--r--include/hw/char/bcm2835_aux.h9
-rw-r--r--include/hw/char/cadence_uart.h10
-rw-r--r--include/hw/char/cmsdk-apb-uart.h10
-rw-r--r--include/hw/char/digic-uart.h10
-rw-r--r--include/hw/char/escc.h9
-rw-r--r--include/hw/char/ibex_uart.h10
-rw-r--r--include/hw/char/imx_serial.h9
-rw-r--r--include/hw/char/nrf51_uart.h9
-rw-r--r--include/hw/char/pl011.h9
-rw-r--r--include/hw/char/renesas_sci.h9
-rw-r--r--include/hw/char/serial.h25
-rw-r--r--include/hw/char/stm32f2xx_usart.h10
-rw-r--r--include/hw/clock.h5
-rw-r--r--include/hw/core/cpu.h10
-rw-r--r--include/hw/core/generic-loader.h10
-rw-r--r--include/hw/core/split-irq.h3
-rw-r--r--include/hw/cpu/a15mpcore.h10
-rw-r--r--include/hw/cpu/a9mpcore.h10
-rw-r--r--include/hw/cpu/arm11mpcore.h10
-rw-r--r--include/hw/cpu/cluster.h10
-rw-r--r--include/hw/cpu/core.h10
-rw-r--r--include/hw/display/bcm2835_fb.h9
-rw-r--r--include/hw/display/dpcd.h4
-rw-r--r--include/hw/display/i2c-ddc.h4
-rw-r--r--include/hw/display/macfb.h30
-rw-r--r--include/hw/display/xlnx_dp.h9
-rw-r--r--include/hw/dma/bcm2835_dma.h10
-rw-r--r--include/hw/dma/i8257.h10
-rw-r--r--include/hw/dma/pl080.h9
-rw-r--r--include/hw/dma/xlnx-zdma.h10
-rw-r--r--include/hw/dma/xlnx-zynq-devcfg.h10
-rw-r--r--include/hw/dma/xlnx_dpdma.h4
-rw-r--r--include/hw/fw-path-provider.h11
-rw-r--r--include/hw/gpio/aspeed_gpio.h18
-rw-r--r--include/hw/gpio/bcm2835_gpio.h10
-rw-r--r--include/hw/gpio/imx_gpio.h9
-rw-r--r--include/hw/gpio/nrf51_gpio.h9
-rw-r--r--include/hw/hotplug.h11
-rw-r--r--include/hw/hyperv/vmbus-bridge.h9
-rw-r--r--include/hw/hyperv/vmbus.h17
-rw-r--r--include/hw/i2c/arm_sbcon_i2c.h10
-rw-r--r--include/hw/i2c/aspeed_i2c.h19
-rw-r--r--include/hw/i2c/i2c.h19
-rw-r--r--include/hw/i2c/imx_i2c.h9
-rw-r--r--include/hw/i2c/microbit_i2c.h10
-rw-r--r--include/hw/i2c/ppc4xx_i2c.h9
-rw-r--r--include/hw/i2c/smbus_slave.h15
-rw-r--r--include/hw/i386/apic_internal.h17
-rw-r--r--include/hw/i386/ich9.h10
-rw-r--r--include/hw/i386/intel_iommu.h7
-rw-r--r--include/hw/i386/ioapic_internal.h16
-rw-r--r--include/hw/i386/microvm.h19
-rw-r--r--include/hw/i386/pc.h14
-rw-r--r--include/hw/i386/x86-iommu.h13
-rw-r--r--include/hw/i386/x86.h19
-rw-r--r--include/hw/ide/ahci.h22
-rw-r--r--include/hw/ide/internal.h19
-rw-r--r--include/hw/ide/pci.h9
-rw-r--r--include/hw/input/adb.h16
-rw-r--r--include/hw/input/i8042.h6
-rw-r--r--include/hw/intc/allwinner-a10-pic.h9
-rw-r--r--include/hw/intc/arm_gic.h15
-rw-r--r--include/hw/intc/arm_gic_common.h21
-rw-r--r--include/hw/intc/arm_gicv3.h14
-rw-r--r--include/hw/intc/arm_gicv3_common.h16
-rw-r--r--include/hw/intc/arm_gicv3_its_common.h11
-rw-r--r--include/hw/intc/armv7m_nvic.h10
-rw-r--r--include/hw/intc/aspeed_vic.h9
-rw-r--r--include/hw/intc/bcm2835_ic.h9
-rw-r--r--include/hw/intc/bcm2836_control.h10
-rw-r--r--include/hw/intc/heathrow_pic.h9
-rw-r--r--include/hw/intc/ibex_plic.h10
-rw-r--r--include/hw/intc/imx_avic.h9
-rw-r--r--include/hw/intc/imx_gpcv2.h9
-rw-r--r--include/hw/intc/intc.h11
-rw-r--r--include/hw/intc/mips_gic.h6
-rw-r--r--include/hw/intc/realview_gic.h10
-rw-r--r--include/hw/intc/rx_icu.h4
-rw-r--r--include/hw/intc/xlnx-pmu-iomod-intc.h10
-rw-r--r--include/hw/intc/xlnx-zynqmp-ipi.h10
-rw-r--r--include/hw/ipack/ipack.h14
-rw-r--r--include/hw/ipmi/ipmi.h36
-rw-r--r--include/hw/isa/i8259_internal.h15
-rw-r--r--include/hw/isa/isa.h28
-rw-r--r--include/hw/isa/pc87312.h11
-rw-r--r--include/hw/isa/superio.h19
-rw-r--r--include/hw/m68k/mcf_fec.h4
-rw-r--r--include/hw/mem/memory-device.h11
-rw-r--r--include/hw/mem/nvdimm.h11
-rw-r--r--include/hw/mem/pc-dimm.h17
-rw-r--r--include/hw/mips/cps.h9
-rw-r--r--include/hw/misc/a9scu.h9
-rw-r--r--include/hw/misc/allwinner-cpucfg.h9
-rw-r--r--include/hw/misc/allwinner-h3-ccu.h9
-rw-r--r--include/hw/misc/allwinner-h3-dramc.h9
-rw-r--r--include/hw/misc/allwinner-h3-sysctrl.h9
-rw-r--r--include/hw/misc/allwinner-sid.h9
-rw-r--r--include/hw/misc/arm11scu.h9
-rw-r--r--include/hw/misc/armsse-cpuid.h9
-rw-r--r--include/hw/misc/armsse-mhu.h9
-rw-r--r--include/hw/misc/aspeed_scu.h18
-rw-r--r--include/hw/misc/aspeed_sdmc.h18
-rw-r--r--include/hw/misc/aspeed_xdma.h9
-rw-r--r--include/hw/misc/auxbus.h11
-rw-r--r--include/hw/misc/avr_power.h9
-rw-r--r--include/hw/misc/bcm2835_mbox.h10
-rw-r--r--include/hw/misc/bcm2835_mphi.h5
-rw-r--r--include/hw/misc/bcm2835_property.h10
-rw-r--r--include/hw/misc/bcm2835_rng.h10
-rw-r--r--include/hw/misc/bcm2835_thermal.h10
-rw-r--r--include/hw/misc/grlib_ahb_apb_pnp.h9
-rw-r--r--include/hw/misc/imx25_ccm.h9
-rw-r--r--include/hw/misc/imx31_ccm.h9
-rw-r--r--include/hw/misc/imx6_ccm.h9
-rw-r--r--include/hw/misc/imx6_src.h9
-rw-r--r--include/hw/misc/imx6ul_ccm.h9
-rw-r--r--include/hw/misc/imx7_ccm.h17
-rw-r--r--include/hw/misc/imx7_gpr.h9
-rw-r--r--include/hw/misc/imx7_snvs.h9
-rw-r--r--include/hw/misc/imx_ccm.h19
-rw-r--r--include/hw/misc/imx_rngc.h9
-rw-r--r--include/hw/misc/iotkit-secctl.h6
-rw-r--r--include/hw/misc/iotkit-sysctl.h10
-rw-r--r--include/hw/misc/iotkit-sysinfo.h10
-rw-r--r--include/hw/misc/mac_via.h27
-rw-r--r--include/hw/misc/macio/cuda.h18
-rw-r--r--include/hw/misc/macio/gpio.h9
-rw-r--r--include/hw/misc/macio/macio.h43
-rw-r--r--include/hw/misc/macio/pmu.h18
-rw-r--r--include/hw/misc/max111x.h10
-rw-r--r--include/hw/misc/mips_cmgcr.h6
-rw-r--r--include/hw/misc/mips_cpc.h9
-rw-r--r--include/hw/misc/mips_itu.h9
-rw-r--r--include/hw/misc/mos6522.h18
-rw-r--r--include/hw/misc/mps2-fpgaio.h9
-rw-r--r--include/hw/misc/mps2-scc.h9
-rw-r--r--include/hw/misc/msf2-sysreg.h9
-rw-r--r--include/hw/misc/nrf51_rng.h9
-rw-r--r--include/hw/misc/pca9552.h9
-rw-r--r--include/hw/misc/stm32f2xx_syscfg.h10
-rw-r--r--include/hw/misc/stm32f4xx_exti.h10
-rw-r--r--include/hw/misc/stm32f4xx_syscfg.h10
-rw-r--r--include/hw/misc/tz-mpc.h6
-rw-r--r--include/hw/misc/tz-msc.h9
-rw-r--r--include/hw/misc/tz-ppc.h6
-rw-r--r--include/hw/misc/unimp.h10
-rw-r--r--include/hw/misc/vmcoreinfo.h9
-rw-r--r--include/hw/misc/zynq-xadc.h10
-rw-r--r--include/hw/net/allwinner-sun8i-emac.h9
-rw-r--r--include/hw/net/allwinner_emac.h9
-rw-r--r--include/hw/net/cadence_gem.h9
-rw-r--r--include/hw/net/ftgmac100.h17
-rw-r--r--include/hw/net/imx_fec.h9
-rw-r--r--include/hw/net/lance.h10
-rw-r--r--include/hw/net/lasi_82596.h10
-rw-r--r--include/hw/net/msf2-emac.h10
-rw-r--r--include/hw/nmi.h11
-rw-r--r--include/hw/nubus/mac-nubus-bridge.h10
-rw-r--r--include/hw/nubus/nubus.h18
-rw-r--r--include/hw/nvram/fw_cfg.h21
-rw-r--r--include/hw/nvram/nrf51_nvm.h9
-rw-r--r--include/hw/or-irq.h3
-rw-r--r--include/hw/pci-bridge/simba.h10
-rw-r--r--include/hw/pci-host/designware.h16
-rw-r--r--include/hw/pci-host/gpex.h19
-rw-r--r--include/hw/pci-host/i440fx.h10
-rw-r--r--include/hw/pci-host/pnv_phb3.h20
-rw-r--r--include/hw/pci-host/pnv_phb4.h21
-rw-r--r--include/hw/pci-host/q35.h19
-rw-r--r--include/hw/pci-host/sabre.h19
-rw-r--r--include/hw/pci-host/spapr.h7
-rw-r--r--include/hw/pci-host/uninorth.h31
-rw-r--r--include/hw/pci-host/xilinx-pcie.h19
-rw-r--r--include/hw/pci/pci.h19
-rw-r--r--include/hw/pci/pci_bridge.h4
-rw-r--r--include/hw/pci/pci_host.h14
-rw-r--r--include/hw/pci/pcie_host.h5
-rw-r--r--include/hw/pci/pcie_port.h18
-rw-r--r--include/hw/pcmcia.h19
-rw-r--r--include/hw/platform-bus.h5
-rw-r--r--include/hw/ppc/mac_dbdma.h9
-rw-r--r--include/hw/ppc/openpic.h9
-rw-r--r--include/hw/ppc/pnv.h75
-rw-r--r--include/hw/ppc/pnv_core.h26
-rw-r--r--include/hw/ppc/pnv_homer.h22
-rw-r--r--include/hw/ppc/pnv_lpc.h28
-rw-r--r--include/hw/ppc/pnv_occ.h22
-rw-r--r--include/hw/ppc/pnv_pnor.h9
-rw-r--r--include/hw/ppc/pnv_psi.h35
-rw-r--r--include/hw/ppc/pnv_xive.h16
-rw-r--r--include/hw/ppc/pnv_xscom.h10
-rw-r--r--include/hw/ppc/spapr.h23
-rw-r--r--include/hw/ppc/spapr_cpu_core.h17
-rw-r--r--include/hw/ppc/spapr_irq.h12
-rw-r--r--include/hw/ppc/spapr_tpm_proxy.h9
-rw-r--r--include/hw/ppc/spapr_vio.h19
-rw-r--r--include/hw/ppc/xics.h31
-rw-r--r--include/hw/ppc/xics_spapr.h5
-rw-r--r--include/hw/ppc/xive.h77
-rw-r--r--include/hw/qdev-core.h15
-rw-r--r--include/hw/rdma/rdma.h11
-rw-r--r--include/hw/register.h4
-rw-r--r--include/hw/resettable.h11
-rw-r--r--include/hw/riscv/opentitan.h10
-rw-r--r--include/hw/riscv/riscv_hart.h10
-rw-r--r--include/hw/riscv/spike.h10
-rw-r--r--include/hw/riscv/virt.h10
-rw-r--r--include/hw/rtc/allwinner-rtc.h18
-rw-r--r--include/hw/rtc/aspeed_rtc.h9
-rw-r--r--include/hw/rtc/goldfish_rtc.h10
-rw-r--r--include/hw/rtc/m48t59.h11
-rw-r--r--include/hw/rtc/mc146818rtc.h9
-rw-r--r--include/hw/rtc/pl031.h9
-rw-r--r--include/hw/rtc/xlnx-zynqmp-rtc.h10
-rw-r--r--include/hw/rx/rx62n.h9
-rw-r--r--include/hw/s390x/3270-ccw.h19
-rw-r--r--include/hw/s390x/ap-device.h12
-rw-r--r--include/hw/s390x/css-bridge.h18
-rw-r--r--include/hw/s390x/event-facility.h34
-rw-r--r--include/hw/s390x/s390-ccw.h19
-rw-r--r--include/hw/s390x/s390-virtio-ccw.h17
-rw-r--r--include/hw/s390x/s390_flic.h30
-rw-r--r--include/hw/s390x/sclp.h14
-rw-r--r--include/hw/s390x/storage-attributes.h37
-rw-r--r--include/hw/s390x/storage-keys.h28
-rw-r--r--include/hw/s390x/tod.h18
-rw-r--r--include/hw/s390x/vfio-ccw.h7
-rw-r--r--include/hw/scsi/esp.h9
-rw-r--r--include/hw/scsi/scsi.h19
-rw-r--r--include/hw/sd/allwinner-sdhost.h18
-rw-r--r--include/hw/sd/aspeed_sdhci.h10
-rw-r--r--include/hw/sd/bcm2835_sdhost.h10
-rw-r--r--include/hw/sd/sd.h23
-rw-r--r--include/hw/sd/sdhci.h13
-rw-r--r--include/hw/southbridge/piix.h10
-rw-r--r--include/hw/sparc/sparc32_dma.h34
-rw-r--r--include/hw/sparc/sun4m_iommu.h9
-rw-r--r--include/hw/sparc/sun4u_iommu.h9
-rw-r--r--include/hw/ssi/aspeed_smc.h18
-rw-r--r--include/hw/ssi/imx_spi.h9
-rw-r--r--include/hw/ssi/mss-spi.h9
-rw-r--r--include/hw/ssi/pl022.h9
-rw-r--r--include/hw/ssi/ssi.h11
-rw-r--r--include/hw/ssi/stm32f2xx_spi.h10
-rw-r--r--include/hw/ssi/xilinx_spips.h32
-rw-r--r--include/hw/stream.h11
-rw-r--r--include/hw/sysbus.h17
-rw-r--r--include/hw/timer/a9gtimer.h6
-rw-r--r--include/hw/timer/allwinner-a10-pit.h6
-rw-r--r--include/hw/timer/arm_mptimer.h10
-rw-r--r--include/hw/timer/armv7m_systick.h9
-rw-r--r--include/hw/timer/aspeed_timer.h19
-rw-r--r--include/hw/timer/avr_timer16.h10
-rw-r--r--include/hw/timer/bcm2835_systmr.h10
-rw-r--r--include/hw/timer/cmsdk-apb-dualtimer.h7
-rw-r--r--include/hw/timer/cmsdk-apb-timer.h10
-rw-r--r--include/hw/timer/digic-timer.h9
-rw-r--r--include/hw/timer/i8254.h9
-rw-r--r--include/hw/timer/imx_epit.h9
-rw-r--r--include/hw/timer/imx_gpt.h9
-rw-r--r--include/hw/timer/mss-timer.h10
-rw-r--r--include/hw/timer/nrf51_timer.h9
-rw-r--r--include/hw/timer/renesas_cmt.h9
-rw-r--r--include/hw/timer/renesas_tmr.h9
-rw-r--r--include/hw/timer/stm32f2xx_timer.h10
-rw-r--r--include/hw/usb.h17
-rw-r--r--include/hw/usb/chipidea.h9
-rw-r--r--include/hw/usb/imx-usb-phy.h9
-rw-r--r--include/hw/vfio/vfio-amd-xgbe.h11
-rw-r--r--include/hw/vfio/vfio-calxeda-xgmac.h21
-rw-r--r--include/hw/vfio/vfio-platform.h19
-rw-r--r--include/hw/virtio/vhost-scsi-common.h10
-rw-r--r--include/hw/virtio/vhost-scsi.h10
-rw-r--r--include/hw/virtio/vhost-user-blk.h10
-rw-r--r--include/hw/virtio/vhost-user-fs.h10
-rw-r--r--include/hw/virtio/vhost-user-scsi.h10
-rw-r--r--include/hw/virtio/vhost-user-vsock.h10
-rw-r--r--include/hw/virtio/vhost-vsock-common.h10
-rw-r--r--include/hw/virtio/vhost-vsock.h10
-rw-r--r--include/hw/virtio/virtio-balloon.h10
-rw-r--r--include/hw/virtio/virtio-blk.h10
-rw-r--r--include/hw/virtio/virtio-bus.h15
-rw-r--r--include/hw/virtio/virtio-crypto.h10
-rw-r--r--include/hw/virtio/virtio-gpu-pci.h5
-rw-r--r--include/hw/virtio/virtio-gpu.h35
-rw-r--r--include/hw/virtio/virtio-input.h29
-rw-r--r--include/hw/virtio/virtio-iommu.h10
-rw-r--r--include/hw/virtio/virtio-mem.h17
-rw-r--r--include/hw/virtio/virtio-mmio.h19
-rw-r--r--include/hw/virtio/virtio-net.h7
-rw-r--r--include/hw/virtio/virtio-pmem.h17
-rw-r--r--include/hw/virtio/virtio-rng.h10
-rw-r--r--include/hw/virtio/virtio-scsi.h19
-rw-r--r--include/hw/virtio/virtio-serial.h22
-rw-r--r--include/hw/virtio/virtio.h14
-rw-r--r--include/hw/vmstate-if.h11
-rw-r--r--include/hw/watchdog/cmsdk-apb-watchdog.h10
-rw-r--r--include/hw/watchdog/wdt_aspeed.h19
-rw-r--r--include/hw/watchdog/wdt_diag288.h19
-rw-r--r--include/hw/watchdog/wdt_imx2.h9
-rw-r--r--include/hw/xen/xen-block.h39
-rw-r--r--include/hw/xen/xen-bus.h37
-rw-r--r--include/hw/xen/xen-legacy-backend.h5
-rw-r--r--include/io/channel-buffer.h7
-rw-r--r--include/io/channel-command.h7
-rw-r--r--include/io/channel-file.h7
-rw-r--r--include/io/channel-socket.h7
-rw-r--r--include/io/channel-tls.h7
-rw-r--r--include/io/channel-websock.h7
-rw-r--r--include/io/channel.h12
-rw-r--r--include/io/dns-resolver.h13
-rw-r--r--include/io/net-listener.h14
-rw-r--r--include/net/can_emu.h4
-rw-r--r--include/net/can_host.h21
-rw-r--r--include/net/filter.h13
-rw-r--r--include/qom/object.h327
-rw-r--r--include/qom/object_interfaces.h13
-rw-r--r--include/scsi/pr-manager.h16
-rw-r--r--include/sysemu/cryptodev.h16
-rw-r--r--include/sysemu/hostmem.h10
-rw-r--r--include/sysemu/hvf.h5
-rw-r--r--include/sysemu/iothread.h9
-rw-r--r--include/sysemu/kvm.h5
-rw-r--r--include/sysemu/rng-random.h5
-rw-r--r--include/sysemu/rng.h10
-rw-r--r--include/sysemu/tpm.h11
-rw-r--r--include/sysemu/tpm_backend.h12
-rw-r--r--include/sysemu/vhost-user-backend.h17
-rw-r--r--include/ui/console.h10
383 files changed, 2932 insertions, 2331 deletions
diff --git a/include/authz/base.h b/include/authz/base.h
index 0782981ad8..06b5e29f6f 100644
--- a/include/authz/base.h
+++ b/include/authz/base.h
@@ -27,18 +27,9 @@
 
 #define TYPE_QAUTHZ "authz"
 
-#define QAUTHZ_CLASS(klass) \
-     OBJECT_CLASS_CHECK(QAuthZClass, (klass), \
-                        TYPE_QAUTHZ)
-#define QAUTHZ_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(QAuthZClass, (obj), \
-                      TYPE_QAUTHZ)
-#define QAUTHZ(obj) \
-     OBJECT_CHECK(QAuthZ, (obj), \
-                  TYPE_QAUTHZ)
-
-typedef struct QAuthZ QAuthZ;
-typedef struct QAuthZClass QAuthZClass;
+OBJECT_DECLARE_TYPE(QAuthZ, QAuthZClass,
+                    qauthz, QAUTHZ)
+
 
 /**
  * QAuthZ:
diff --git a/include/authz/list.h b/include/authz/list.h
index a88cdbbcf8..5676bb375c 100644
--- a/include/authz/list.h
+++ b/include/authz/list.h
@@ -23,21 +23,13 @@
 
 #include "authz/base.h"
 #include "qapi/qapi-types-authz.h"
+#include "qom/object.h"
 
 #define TYPE_QAUTHZ_LIST "authz-list"
 
-#define QAUTHZ_LIST_CLASS(klass)                        \
-    OBJECT_CLASS_CHECK(QAuthZListClass, (klass),        \
-                       TYPE_QAUTHZ_LIST)
-#define QAUTHZ_LIST_GET_CLASS(obj)              \
-    OBJECT_GET_CLASS(QAuthZListClass, (obj),    \
-                      TYPE_QAUTHZ_LIST)
-#define QAUTHZ_LIST(obj) \
-    OBJECT_CHECK(QAuthZList, (obj), \
-                 TYPE_QAUTHZ_LIST)
+OBJECT_DECLARE_SIMPLE_TYPE(QAuthZList, qauthz_list,
+                           QAUTHZ_LIST, QAuthZClass)
 
-typedef struct QAuthZList QAuthZList;
-typedef struct QAuthZListClass QAuthZListClass;
 
 
 /**
@@ -76,9 +68,6 @@ struct QAuthZList {
 };
 
 
-struct QAuthZListClass {
-    QAuthZClass parent_class;
-};
 
 
 QAuthZList *qauthz_list_new(const char *id,
diff --git a/include/authz/listfile.h b/include/authz/listfile.h
index 24ae2e606c..b491227bbe 100644
--- a/include/authz/listfile.h
+++ b/include/authz/listfile.h
@@ -23,21 +23,13 @@
 
 #include "authz/list.h"
 #include "qemu/filemonitor.h"
+#include "qom/object.h"
 
 #define TYPE_QAUTHZ_LIST_FILE "authz-list-file"
 
-#define QAUTHZ_LIST_FILE_CLASS(klass)                        \
-    OBJECT_CLASS_CHECK(QAuthZListFileClass, (klass),        \
-                       TYPE_QAUTHZ_LIST_FILE)
-#define QAUTHZ_LIST_FILE_GET_CLASS(obj)              \
-    OBJECT_GET_CLASS(QAuthZListFileClass, (obj),    \
-                      TYPE_QAUTHZ_LIST_FILE)
-#define QAUTHZ_LIST_FILE(obj) \
-    OBJECT_CHECK(QAuthZListFile, (obj), \
-                 TYPE_QAUTHZ_LIST_FILE)
+OBJECT_DECLARE_SIMPLE_TYPE(QAuthZListFile, qauthz_list_file,
+                           QAUTHZ_LIST_FILE, QAuthZClass)
 
-typedef struct QAuthZListFile QAuthZListFile;
-typedef struct QAuthZListFileClass QAuthZListFileClass;
 
 
 /**
@@ -95,9 +87,6 @@ struct QAuthZListFile {
 };
 
 
-struct QAuthZListFileClass {
-    QAuthZClass parent_class;
-};
 
 
 QAuthZListFile *qauthz_list_file_new(const char *id,
diff --git a/include/authz/pamacct.h b/include/authz/pamacct.h
index f3a7ef1011..7804853ddf 100644
--- a/include/authz/pamacct.h
+++ b/include/authz/pamacct.h
@@ -22,22 +22,14 @@
 #define QAUTHZ_PAMACCT_H
 
 #include "authz/base.h"
+#include "qom/object.h"
 
 
 #define TYPE_QAUTHZ_PAM "authz-pam"
 
-#define QAUTHZ_PAM_CLASS(klass) \
-     OBJECT_CLASS_CHECK(QAuthZPAMClass, (klass), \
-                        TYPE_QAUTHZ_PAM)
-#define QAUTHZ_PAM_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(QAuthZPAMClass, (obj), \
-                      TYPE_QAUTHZ_PAM)
-#define QAUTHZ_PAM(obj) \
-     OBJECT_CHECK(QAuthZPAM, (obj), \
-                  TYPE_QAUTHZ_PAM)
+OBJECT_DECLARE_SIMPLE_TYPE(QAuthZPAM, qauthz_pam,
+                           QAUTHZ_PAM, QAuthZClass)
 
-typedef struct QAuthZPAM QAuthZPAM;
-typedef struct QAuthZPAMClass QAuthZPAMClass;
 
 
 /**
@@ -87,9 +79,6 @@ struct QAuthZPAM {
 };
 
 
-struct QAuthZPAMClass {
-    QAuthZClass parent_class;
-};
 
 
 QAuthZPAM *qauthz_pam_new(const char *id,
diff --git a/include/authz/simple.h b/include/authz/simple.h
index 2b7ab0cdd9..346fcb0c6c 100644
--- a/include/authz/simple.h
+++ b/include/authz/simple.h
@@ -22,21 +22,13 @@
 #define QAUTHZ_SIMPLE_H
 
 #include "authz/base.h"
+#include "qom/object.h"
 
 #define TYPE_QAUTHZ_SIMPLE "authz-simple"
 
-#define QAUTHZ_SIMPLE_CLASS(klass)                        \
-    OBJECT_CLASS_CHECK(QAuthZSimpleClass, (klass),        \
-                       TYPE_QAUTHZ_SIMPLE)
-#define QAUTHZ_SIMPLE_GET_CLASS(obj)              \
-    OBJECT_GET_CLASS(QAuthZSimpleClass, (obj),    \
-                      TYPE_QAUTHZ_SIMPLE)
-#define QAUTHZ_SIMPLE(obj) \
-    OBJECT_CHECK(QAuthZSimple, (obj), \
-                 TYPE_QAUTHZ_SIMPLE)
+OBJECT_DECLARE_SIMPLE_TYPE(QAuthZSimple, qauthz_simple,
+                           QAUTHZ_SIMPLE, QAuthZClass)
 
-typedef struct QAuthZSimple QAuthZSimple;
-typedef struct QAuthZSimpleClass QAuthZSimpleClass;
 
 
 /**
@@ -70,9 +62,6 @@ struct QAuthZSimple {
 };
 
 
-struct QAuthZSimpleClass {
-    QAuthZClass parent_class;
-};
 
 
 QAuthZSimple *qauthz_simple_new(const char *id,
diff --git a/include/block/throttle-groups.h b/include/block/throttle-groups.h
index 5e77db700f..20b308f619 100644
--- a/include/block/throttle-groups.h
+++ b/include/block/throttle-groups.h
@@ -27,6 +27,7 @@
 
 #include "qemu/throttle.h"
 #include "block/block_int.h"
+#include "qom/object.h"
 
 /* The ThrottleGroupMember structure indicates membership in a ThrottleGroup
  * and holds related data.
@@ -60,7 +61,8 @@ typedef struct ThrottleGroupMember {
 
 #define TYPE_THROTTLE_GROUP "throttle-group"
 typedef struct ThrottleGroup ThrottleGroup;
-#define THROTTLE_GROUP(obj) OBJECT_CHECK(ThrottleGroup, (obj), TYPE_THROTTLE_GROUP)
+DECLARE_INSTANCE_CHECKER(ThrottleGroup, THROTTLE_GROUP,
+                         TYPE_THROTTLE_GROUP)
 
 const char *throttle_group_get_name(ThrottleGroupMember *tgm);
 
diff --git a/include/chardev/char-fd.h b/include/chardev/char-fd.h
index e7c2b176f9..9de0e440de 100644
--- a/include/chardev/char-fd.h
+++ b/include/chardev/char-fd.h
@@ -26,17 +26,20 @@
 
 #include "io/channel.h"
 #include "chardev/char.h"
+#include "qom/object.h"
 
-typedef struct FDChardev {
+struct FDChardev {
     Chardev parent;
 
     QIOChannel *ioc_in, *ioc_out;
     int max_size;
-} FDChardev;
+};
+typedef struct FDChardev FDChardev;
 
 #define TYPE_CHARDEV_FD "chardev-fd"
 
-#define FD_CHARDEV(obj) OBJECT_CHECK(FDChardev, (obj), TYPE_CHARDEV_FD)
+DECLARE_INSTANCE_CHECKER(FDChardev, FD_CHARDEV,
+                         TYPE_CHARDEV_FD)
 
 void qemu_chr_open_fd(Chardev *chr, int fd_in, int fd_out);
 int qmp_chardev_open_file_source(char *src, int flags, Error **errp);
diff --git a/include/chardev/char-win.h b/include/chardev/char-win.h
index fa59e9e423..485521469c 100644
--- a/include/chardev/char-win.h
+++ b/include/chardev/char-win.h
@@ -25,8 +25,9 @@
 #define CHAR_WIN_H
 
 #include "chardev/char.h"
+#include "qom/object.h"
 
-typedef struct {
+struct WinChardev {
     Chardev parent;
 
     bool keep_open; /* console do not close file */
@@ -36,13 +37,15 @@ typedef struct {
 
     /* Protected by the Chardev chr_write_lock.  */
     OVERLAPPED osend;
-} WinChardev;
+};
+typedef struct WinChardev WinChardev;
 
 #define NSENDBUF 2048
 #define NRECVBUF 2048
 
 #define TYPE_CHARDEV_WIN "chardev-win"
-#define WIN_CHARDEV(obj) OBJECT_CHECK(WinChardev, (obj), TYPE_CHARDEV_WIN)
+DECLARE_INSTANCE_CHECKER(WinChardev, WIN_CHARDEV,
+                         TYPE_CHARDEV_WIN)
 
 void win_chr_set_file(Chardev *chr, HANDLE file, bool keep_open);
 int win_chr_serial_init(Chardev *chr, const char *filename, Error **errp);
diff --git a/include/chardev/char.h b/include/chardev/char.h
index 00589a6025..5874de57ea 100644
--- a/include/chardev/char.h
+++ b/include/chardev/char.h
@@ -226,11 +226,9 @@ int qemu_chr_write(Chardev *s, const uint8_t *buf, int len, bool write_all);
 int qemu_chr_wait_connected(Chardev *chr, Error **errp);
 
 #define TYPE_CHARDEV "chardev"
-#define CHARDEV(obj) OBJECT_CHECK(Chardev, (obj), TYPE_CHARDEV)
-#define CHARDEV_CLASS(klass) \
-    OBJECT_CLASS_CHECK(ChardevClass, (klass), TYPE_CHARDEV)
-#define CHARDEV_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(ChardevClass, (obj), TYPE_CHARDEV)
+typedef struct ChardevClass ChardevClass;
+DECLARE_OBJ_CHECKERS(Chardev, ChardevClass,
+                     CHARDEV, TYPE_CHARDEV)
 
 #define TYPE_CHARDEV_NULL "chardev-null"
 #define TYPE_CHARDEV_MUX "chardev-mux"
@@ -251,7 +249,7 @@ int qemu_chr_wait_connected(Chardev *chr, Error **errp);
 #define CHARDEV_IS_PTY(chr) \
     object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_PTY)
 
-typedef struct ChardevClass {
+struct ChardevClass {
     ObjectClass parent_class;
 
     bool internal; /* TODO: eventually use TYPE_USER_CREATABLE */
@@ -276,7 +274,7 @@ typedef struct ChardevClass {
     void (*chr_be_event)(Chardev *s, QEMUChrEvent event);
     /* Return 0 if succeeded, 1 if failed */
     int (*chr_machine_done)(Chardev *chr);
-} ChardevClass;
+};
 
 Chardev *qemu_chardev_new(const char *id, const char *typename,
                           ChardevBackend *backend, GMainContext *context,
diff --git a/include/chardev/spice.h b/include/chardev/spice.h
index 1f7339b649..99f26aedde 100644
--- a/include/chardev/spice.h
+++ b/include/chardev/spice.h
@@ -3,8 +3,9 @@
 
 #include <spice.h>
 #include "chardev/char-fe.h"
+#include "qom/object.h"
 
-typedef struct SpiceChardev {
+struct SpiceChardev {
     Chardev               parent;
 
     SpiceCharDeviceInstance sin;
@@ -13,13 +14,15 @@ typedef struct SpiceChardev {
     const uint8_t         *datapos;
     int                   datalen;
     QLIST_ENTRY(SpiceChardev) next;
-} SpiceChardev;
+};
+typedef struct SpiceChardev SpiceChardev;
 
 #define TYPE_CHARDEV_SPICE "chardev-spice"
 #define TYPE_CHARDEV_SPICEVMC "chardev-spicevmc"
 #define TYPE_CHARDEV_SPICEPORT "chardev-spiceport"
 
-#define SPICE_CHARDEV(obj) OBJECT_CHECK(SpiceChardev, (obj), TYPE_CHARDEV_SPICE)
+DECLARE_INSTANCE_CHECKER(SpiceChardev, SPICE_CHARDEV,
+                         TYPE_CHARDEV_SPICE)
 
 void qemu_chr_open_spice_port(Chardev *chr, ChardevBackend *backend,
                               bool *be_opened, Error **errp);
diff --git a/include/crypto/secret.h b/include/crypto/secret.h
index 2deb461d2f..5d20ae6d2f 100644
--- a/include/crypto/secret.h
+++ b/include/crypto/secret.h
@@ -26,10 +26,10 @@
 #include "crypto/secret_common.h"
 
 #define TYPE_QCRYPTO_SECRET "secret"
-#define QCRYPTO_SECRET(obj)                  \
-    OBJECT_CHECK(QCryptoSecret, (obj), TYPE_QCRYPTO_SECRET)
-
 typedef struct QCryptoSecret QCryptoSecret;
+DECLARE_INSTANCE_CHECKER(QCryptoSecret, QCRYPTO_SECRET,
+                         TYPE_QCRYPTO_SECRET)
+
 typedef struct QCryptoSecretClass QCryptoSecretClass;
 
 /**
diff --git a/include/crypto/secret_common.h b/include/crypto/secret_common.h
index 980c02ab71..daf00c3b2a 100644
--- a/include/crypto/secret_common.h
+++ b/include/crypto/secret_common.h
@@ -25,17 +25,9 @@
 #include "qom/object.h"
 
 #define TYPE_QCRYPTO_SECRET_COMMON "secret_common"
-#define QCRYPTO_SECRET_COMMON(obj) \
-    OBJECT_CHECK(QCryptoSecretCommon, (obj), TYPE_QCRYPTO_SECRET_COMMON)
-#define QCRYPTO_SECRET_COMMON_CLASS(class) \
-    OBJECT_CLASS_CHECK(QCryptoSecretCommonClass, \
-                       (class), TYPE_QCRYPTO_SECRET_COMMON)
-#define QCRYPTO_SECRET_COMMON_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(QCryptoSecretCommonClass, \
-                     (obj), TYPE_QCRYPTO_SECRET_COMMON)
+OBJECT_DECLARE_TYPE(QCryptoSecretCommon, QCryptoSecretCommonClass,
+                    qcrypto_secret_common, QCRYPTO_SECRET_COMMON)
 
-typedef struct QCryptoSecretCommon QCryptoSecretCommon;
-typedef struct QCryptoSecretCommonClass QCryptoSecretCommonClass;
 
 struct QCryptoSecretCommon {
     Object parent_obj;
diff --git a/include/crypto/secret_keyring.h b/include/crypto/secret_keyring.h
index 9f371ad251..73d2a8f501 100644
--- a/include/crypto/secret_keyring.h
+++ b/include/crypto/secret_keyring.h
@@ -26,27 +26,15 @@
 #include "crypto/secret_common.h"
 
 #define TYPE_QCRYPTO_SECRET_KEYRING "secret_keyring"
-#define QCRYPTO_SECRET_KEYRING(obj) \
-    OBJECT_CHECK(QCryptoSecretKeyring, (obj), \
-                 TYPE_QCRYPTO_SECRET_KEYRING)
-#define QCRYPTO_SECRET_KEYRING_CLASS(class) \
-    OBJECT_CLASS_CHECK(QCryptoSecretKeyringClass, \
-                       (class), TYPE_QCRYPTO_SECRET_KEYRING)
-#define QCRYPTO_SECRET_KEYRING_GET_CLASS(class) \
-    OBJECT_GET_CLASS(QCryptoSecretKeyringClass, \
-                     (class), TYPE_QCRYPTO_SECRET_KEYRING)
-
-typedef struct QCryptoSecretKeyring QCryptoSecretKeyring;
-typedef struct QCryptoSecretKeyringClass QCryptoSecretKeyringClass;
-
-typedef struct QCryptoSecretKeyring {
+OBJECT_DECLARE_SIMPLE_TYPE(QCryptoSecretKeyring, qcrypto_secret_keyring,
+                           QCRYPTO_SECRET_KEYRING, QCryptoSecretCommonClass)
+
+
+struct QCryptoSecretKeyring {
     QCryptoSecretCommon parent;
     int32_t serial;
-} QCryptoSecretKeyring;
+};
 
 
-typedef struct QCryptoSecretKeyringClass {
-    QCryptoSecretCommonClass parent;
-} QCryptoSecretKeyringClass;
 
 #endif /* QCRYPTO_SECRET_KEYRING_H */
diff --git a/include/crypto/tls-cipher-suites.h b/include/crypto/tls-cipher-suites.h
index 28b3a73ce1..bb9ee53e03 100644
--- a/include/crypto/tls-cipher-suites.h
+++ b/include/crypto/tls-cipher-suites.h
@@ -15,14 +15,15 @@
 #include "crypto/tlscreds.h"
 
 #define TYPE_QCRYPTO_TLS_CIPHER_SUITES "tls-cipher-suites"
-#define QCRYPTO_TLS_CIPHER_SUITES(obj) \
-    OBJECT_CHECK(QCryptoTLSCipherSuites, (obj), TYPE_QCRYPTO_TLS_CIPHER_SUITES)
+typedef struct QCryptoTLSCipherSuites QCryptoTLSCipherSuites;
+DECLARE_INSTANCE_CHECKER(QCryptoTLSCipherSuites, QCRYPTO_TLS_CIPHER_SUITES,
+                         TYPE_QCRYPTO_TLS_CIPHER_SUITES)
 
-typedef struct QCryptoTLSCipherSuites {
+struct QCryptoTLSCipherSuites {
     /* <private> */
     QCryptoTLSCreds parent_obj;
     /* <public> */
-} QCryptoTLSCipherSuites;
+};
 
 /**
   * qcrypto_tls_cipher_suites_get_data:
diff --git a/include/crypto/tlscreds.h b/include/crypto/tlscreds.h
index fd7a284aa2..079e376047 100644
--- a/include/crypto/tlscreds.h
+++ b/include/crypto/tlscreds.h
@@ -29,10 +29,10 @@
 #endif
 
 #define TYPE_QCRYPTO_TLS_CREDS "tls-creds"
-#define QCRYPTO_TLS_CREDS(obj)                  \
-    OBJECT_CHECK(QCryptoTLSCreds, (obj), TYPE_QCRYPTO_TLS_CREDS)
-
 typedef struct QCryptoTLSCreds QCryptoTLSCreds;
+DECLARE_INSTANCE_CHECKER(QCryptoTLSCreds, QCRYPTO_TLS_CREDS,
+                         TYPE_QCRYPTO_TLS_CREDS)
+
 typedef struct QCryptoTLSCredsClass QCryptoTLSCredsClass;
 
 #define QCRYPTO_TLS_CREDS_DH_PARAMS "dh-params.pem"
diff --git a/include/crypto/tlscredsanon.h b/include/crypto/tlscredsanon.h
index 9e9a5ce1a8..3f464a3809 100644
--- a/include/crypto/tlscredsanon.h
+++ b/include/crypto/tlscredsanon.h
@@ -22,13 +22,14 @@
 #define QCRYPTO_TLSCREDSANON_H
 
 #include "crypto/tlscreds.h"
+#include "qom/object.h"
 
 #define TYPE_QCRYPTO_TLS_CREDS_ANON "tls-creds-anon"
-#define QCRYPTO_TLS_CREDS_ANON(obj)                  \
-    OBJECT_CHECK(QCryptoTLSCredsAnon, (obj), TYPE_QCRYPTO_TLS_CREDS_ANON)
+typedef struct QCryptoTLSCredsAnon QCryptoTLSCredsAnon;
+DECLARE_INSTANCE_CHECKER(QCryptoTLSCredsAnon, QCRYPTO_TLS_CREDS_ANON,
+                         TYPE_QCRYPTO_TLS_CREDS_ANON)
 
 
-typedef struct QCryptoTLSCredsAnon QCryptoTLSCredsAnon;
 typedef struct QCryptoTLSCredsAnonClass QCryptoTLSCredsAnonClass;
 
 /**
diff --git a/include/crypto/tlscredspsk.h b/include/crypto/tlscredspsk.h
index 907035a29b..d7e6bdb5ed 100644
--- a/include/crypto/tlscredspsk.h
+++ b/include/crypto/tlscredspsk.h
@@ -22,12 +22,13 @@
 #define QCRYPTO_TLSCREDSPSK_H
 
 #include "crypto/tlscreds.h"
+#include "qom/object.h"
 
 #define TYPE_QCRYPTO_TLS_CREDS_PSK "tls-creds-psk"
-#define QCRYPTO_TLS_CREDS_PSK(obj)                  \
-    OBJECT_CHECK(QCryptoTLSCredsPSK, (obj), TYPE_QCRYPTO_TLS_CREDS_PSK)
-
 typedef struct QCryptoTLSCredsPSK QCryptoTLSCredsPSK;
+DECLARE_INSTANCE_CHECKER(QCryptoTLSCredsPSK, QCRYPTO_TLS_CREDS_PSK,
+                         TYPE_QCRYPTO_TLS_CREDS_PSK)
+
 typedef struct QCryptoTLSCredsPSKClass QCryptoTLSCredsPSKClass;
 
 #define QCRYPTO_TLS_CREDS_PSKFILE "keys.psk"
diff --git a/include/crypto/tlscredsx509.h b/include/crypto/tlscredsx509.h
index e1542e5c8c..c6d89b7881 100644
--- a/include/crypto/tlscredsx509.h
+++ b/include/crypto/tlscredsx509.h
@@ -22,12 +22,13 @@
 #define QCRYPTO_TLSCREDSX509_H
 
 #include "crypto/tlscreds.h"
+#include "qom/object.h"
 
 #define TYPE_QCRYPTO_TLS_CREDS_X509 "tls-creds-x509"
-#define QCRYPTO_TLS_CREDS_X509(obj)                  \
-    OBJECT_CHECK(QCryptoTLSCredsX509, (obj), TYPE_QCRYPTO_TLS_CREDS_X509)
-
 typedef struct QCryptoTLSCredsX509 QCryptoTLSCredsX509;
+DECLARE_INSTANCE_CHECKER(QCryptoTLSCredsX509, QCRYPTO_TLS_CREDS_X509,
+                         TYPE_QCRYPTO_TLS_CREDS_X509)
+
 typedef struct QCryptoTLSCredsX509Class QCryptoTLSCredsX509Class;
 
 #define QCRYPTO_TLS_CREDS_X509_CA_CERT "ca-cert.pem"
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 0cfe987ab4..f1bb2a7df5 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -34,18 +34,13 @@
 #define MAX_PHYS_ADDR            (((hwaddr)1 << MAX_PHYS_ADDR_SPACE_BITS) - 1)
 
 #define TYPE_MEMORY_REGION "qemu:memory-region"
-#define MEMORY_REGION(obj) \
-        OBJECT_CHECK(MemoryRegion, (obj), TYPE_MEMORY_REGION)
+DECLARE_INSTANCE_CHECKER(MemoryRegion, MEMORY_REGION,
+                         TYPE_MEMORY_REGION)
 
 #define TYPE_IOMMU_MEMORY_REGION "qemu:iommu-memory-region"
-#define IOMMU_MEMORY_REGION(obj) \
-        OBJECT_CHECK(IOMMUMemoryRegion, (obj), TYPE_IOMMU_MEMORY_REGION)
-#define IOMMU_MEMORY_REGION_CLASS(klass) \
-        OBJECT_CLASS_CHECK(IOMMUMemoryRegionClass, (klass), \
-                         TYPE_IOMMU_MEMORY_REGION)
-#define IOMMU_MEMORY_REGION_GET_CLASS(obj) \
-        OBJECT_GET_CLASS(IOMMUMemoryRegionClass, (obj), \
-                         TYPE_IOMMU_MEMORY_REGION)
+typedef struct IOMMUMemoryRegionClass IOMMUMemoryRegionClass;
+DECLARE_OBJ_CHECKERS(IOMMUMemoryRegion, IOMMUMemoryRegionClass,
+                     IOMMU_MEMORY_REGION, TYPE_IOMMU_MEMORY_REGION)
 
 extern bool global_dirty_log;
 
@@ -216,7 +211,7 @@ enum IOMMUMemoryRegionAttr {
     IOMMU_ATTR_SPAPR_TCE_FD
 };
 
-/**
+/*
  * IOMMUMemoryRegionClass:
  *
  * All IOMMU implementations need to subclass TYPE_IOMMU_MEMORY_REGION
@@ -242,7 +237,7 @@ enum IOMMUMemoryRegionAttr {
  * only a single IOMMU index. A more complex IOMMU might have one index
  * for secure transactions and one for non-secure transactions.
  */
-typedef struct IOMMUMemoryRegionClass {
+struct IOMMUMemoryRegionClass {
     /* private */
     MemoryRegionClass parent_class;
 
@@ -355,7 +350,7 @@ typedef struct IOMMUMemoryRegionClass {
      * @iommu: the IOMMUMemoryRegion
      */
     int (*num_indexes)(IOMMUMemoryRegion *iommu);
-} IOMMUMemoryRegionClass;
+};
 
 typedef struct CoalescedMemoryRange CoalescedMemoryRange;
 typedef struct MemoryRegionIoeventfd MemoryRegionIoeventfd;
diff --git a/include/hw/acpi/acpi_dev_interface.h b/include/hw/acpi/acpi_dev_interface.h
index a2a12af9b9..9adf1e4706 100644
--- a/include/hw/acpi/acpi_dev_interface.h
+++ b/include/hw/acpi/acpi_dev_interface.h
@@ -18,12 +18,9 @@ typedef enum {
 
 #define TYPE_ACPI_DEVICE_IF "acpi-device-interface"
 
-#define ACPI_DEVICE_IF_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AcpiDeviceIfClass, (klass), \
-                        TYPE_ACPI_DEVICE_IF)
-#define ACPI_DEVICE_IF_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AcpiDeviceIfClass, (obj), \
-                      TYPE_ACPI_DEVICE_IF)
+typedef struct AcpiDeviceIfClass AcpiDeviceIfClass;
+DECLARE_CLASS_CHECKERS(AcpiDeviceIfClass, ACPI_DEVICE_IF,
+                       TYPE_ACPI_DEVICE_IF)
 #define ACPI_DEVICE_IF(obj) \
      INTERFACE_CHECK(AcpiDeviceIf, (obj), \
                      TYPE_ACPI_DEVICE_IF)
@@ -48,7 +45,7 @@ void acpi_send_event(DeviceState *dev, AcpiEventStatusBits event);
  * knowledge about internals of actual device that implements
  * ACPI interface.
  */
-typedef struct AcpiDeviceIfClass {
+struct AcpiDeviceIfClass {
     /* <private> */
     InterfaceClass parent_class;
 
@@ -57,5 +54,5 @@ typedef struct AcpiDeviceIfClass {
     void (*send_event)(AcpiDeviceIf *adev, AcpiEventStatusBits ev);
     void (*madt_cpu)(AcpiDeviceIf *adev, int uid,
                      const CPUArchIdList *apic_ids, GArray *entry);
-} AcpiDeviceIfClass;
+};
 #endif
diff --git a/include/hw/acpi/generic_event_device.h b/include/hw/acpi/generic_event_device.h
index 90a9180db5..1be05a3c0f 100644
--- a/include/hw/acpi/generic_event_device.h
+++ b/include/hw/acpi/generic_event_device.h
@@ -62,12 +62,14 @@
 #include "hw/sysbus.h"
 #include "hw/acpi/memory_hotplug.h"
 #include "hw/acpi/ghes.h"
+#include "qom/object.h"
 
 #define ACPI_POWER_BUTTON_DEVICE "PWRB"
 
 #define TYPE_ACPI_GED "acpi-ged"
-#define ACPI_GED(obj) \
-    OBJECT_CHECK(AcpiGedState, (obj), TYPE_ACPI_GED)
+typedef struct AcpiGedState AcpiGedState;
+DECLARE_INSTANCE_CHECKER(AcpiGedState, ACPI_GED,
+                         TYPE_ACPI_GED)
 
 #define ACPI_GED_EVT_SEL_OFFSET    0x0
 #define ACPI_GED_EVT_SEL_LEN       0x4
@@ -90,7 +92,7 @@ typedef struct GEDState {
     uint32_t     sel;
 } GEDState;
 
-typedef struct AcpiGedState {
+struct AcpiGedState {
     SysBusDevice parent_obj;
     MemHotplugState memhp_state;
     MemoryRegion container_memhp;
@@ -98,7 +100,7 @@ typedef struct AcpiGedState {
     uint32_t ged_event_bitmap;
     qemu_irq irq;
     AcpiGhesState ghes_state;
-} AcpiGedState;
+};
 
 void build_ged_aml(Aml *table, const char* name, HotplugHandler *hotplug_dev,
                    uint32_t ged_irq, AmlRegionSpace rs, hwaddr ged_base);
diff --git a/include/hw/acpi/vmgenid.h b/include/hw/acpi/vmgenid.h
index c49d913f3e..aff574df5f 100644
--- a/include/hw/acpi/vmgenid.h
+++ b/include/hw/acpi/vmgenid.h
@@ -4,8 +4,9 @@
 #include "hw/acpi/bios-linker-loader.h"
 #include "hw/qdev-core.h"
 #include "qemu/uuid.h"
+#include "qom/object.h"
 
-#define VMGENID_DEVICE           "vmgenid"
+#define TYPE_VMGENID           "vmgenid"
 #define VMGENID_GUID             "guid"
 #define VMGENID_GUID_FW_CFG_FILE      "etc/vmgenid_guid"
 #define VMGENID_ADDR_FW_CFG_FILE      "etc/vmgenid_addr"
@@ -15,18 +16,20 @@
                                        * OVMF SDT Header Probe Supressor
                                        */
 
-#define VMGENID(obj) OBJECT_CHECK(VmGenIdState, (obj), VMGENID_DEVICE)
+typedef struct VmGenIdState VmGenIdState;
+DECLARE_INSTANCE_CHECKER(VmGenIdState, VMGENID,
+                         TYPE_VMGENID)
 
-typedef struct VmGenIdState {
+struct VmGenIdState {
     DeviceClass parent_obj;
     QemuUUID guid;                /* The 128-bit GUID seen by the guest */
     uint8_t vmgenid_addr_le[8];   /* Address of the GUID (little-endian) */
-} VmGenIdState;
+};
 
 /* returns NULL unless there is exactly one device */
 static inline Object *find_vmgenid_dev(void)
 {
-    return object_resolve_path_type("", VMGENID_DEVICE, NULL);
+    return object_resolve_path_type("", TYPE_VMGENID, NULL);
 }
 
 void vmgenid_build_acpi(VmGenIdState *vms, GArray *table_data, GArray *guid,
diff --git a/include/hw/adc/stm32f2xx_adc.h b/include/hw/adc/stm32f2xx_adc.h
index 663b79f4f3..6a4f8e955b 100644
--- a/include/hw/adc/stm32f2xx_adc.h
+++ b/include/hw/adc/stm32f2xx_adc.h
@@ -26,6 +26,7 @@
 #define HW_STM32F2XX_ADC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define ADC_SR    0x00
 #define ADC_CR1   0x04
@@ -58,10 +59,11 @@
 #define ADC_COMMON_ADDRESS 0x100
 
 #define TYPE_STM32F2XX_ADC "stm32f2xx-adc"
-#define STM32F2XX_ADC(obj) \
-    OBJECT_CHECK(STM32F2XXADCState, (obj), TYPE_STM32F2XX_ADC)
+typedef struct STM32F2XXADCState STM32F2XXADCState;
+DECLARE_INSTANCE_CHECKER(STM32F2XXADCState, STM32F2XX_ADC,
+                         TYPE_STM32F2XX_ADC)
 
-typedef struct {
+struct STM32F2XXADCState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -84,6 +86,6 @@ typedef struct {
     uint32_t adc_dr;
 
     qemu_irq irq;
-} STM32F2XXADCState;
+};
 
 #endif /* HW_STM32F2XX_ADC_H */
diff --git a/include/hw/arm/allwinner-a10.h b/include/hw/arm/allwinner-a10.h
index 77c82a9982..d13b6cf50f 100644
--- a/include/hw/arm/allwinner-a10.h
+++ b/include/hw/arm/allwinner-a10.h
@@ -14,6 +14,7 @@
 #include "hw/rtc/allwinner-rtc.h"
 
 #include "target/arm/cpu.h"
+#include "qom/object.h"
 
 
 #define AW_A10_SDRAM_BASE       0x40000000
@@ -21,9 +22,11 @@
 #define AW_A10_NUM_USB          2
 
 #define TYPE_AW_A10 "allwinner-a10"
-#define AW_A10(obj) OBJECT_CHECK(AwA10State, (obj), TYPE_AW_A10)
+typedef struct AwA10State AwA10State;
+DECLARE_INSTANCE_CHECKER(AwA10State, AW_A10,
+                         TYPE_AW_A10)
 
-typedef struct AwA10State {
+struct AwA10State {
     /*< private >*/
     DeviceState parent_obj;
     /*< public >*/
@@ -38,6 +41,6 @@ typedef struct AwA10State {
     MemoryRegion sram_a;
     EHCISysBusState ehci[AW_A10_NUM_USB];
     OHCISysBusState ohci[AW_A10_NUM_USB];
-} AwA10State;
+};
 
 #endif
diff --git a/include/hw/arm/allwinner-h3.h b/include/hw/arm/allwinner-h3.h
index 626139dcb3..a93e019521 100644
--- a/include/hw/arm/allwinner-h3.h
+++ b/include/hw/arm/allwinner-h3.h
@@ -106,7 +106,9 @@ enum {
 #define TYPE_AW_H3 "allwinner-h3"
 
 /** Convert input object to Allwinner H3 state object */
-#define AW_H3(obj) OBJECT_CHECK(AwH3State, (obj), TYPE_AW_H3)
+typedef struct AwH3State AwH3State;
+DECLARE_INSTANCE_CHECKER(AwH3State, AW_H3,
+                         TYPE_AW_H3)
 
 /** @} */
 
@@ -116,7 +118,7 @@ enum {
  * This struct contains the state of all the devices
  * which are currently emulated by the H3 SoC code.
  */
-typedef struct AwH3State {
+struct AwH3State {
     /*< private >*/
     DeviceState parent_obj;
     /*< public >*/
@@ -136,7 +138,7 @@ typedef struct AwH3State {
     MemoryRegion sram_a1;
     MemoryRegion sram_a2;
     MemoryRegion sram_c;
-} AwH3State;
+};
 
 /**
  * Emulate Boot ROM firmware setup functionality.
diff --git a/include/hw/arm/armsse.h b/include/hw/arm/armsse.h
index 347b977ae5..b844ef6bc0 100644
--- a/include/hw/arm/armsse.h
+++ b/include/hw/arm/armsse.h
@@ -105,9 +105,11 @@
 #include "hw/or-irq.h"
 #include "hw/core/split-irq.h"
 #include "hw/cpu/cluster.h"
+#include "qom/object.h"
 
 #define TYPE_ARM_SSE "arm-sse"
-#define ARM_SSE(obj) OBJECT_CHECK(ARMSSE, (obj), TYPE_ARM_SSE)
+OBJECT_DECLARE_TYPE(ARMSSE, ARMSSEClass,
+                    arm_sse, ARM_SSE)
 
 /*
  * These type names are for specific IoTKit subsystems; other than
@@ -140,7 +142,7 @@
 #define RAM3_PPU 6
 #define NUM_PPUS 7
 
-typedef struct ARMSSE {
+struct ARMSSE {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -215,18 +217,14 @@ typedef struct ARMSSE {
     uint32_t init_svtor;
     bool cpu_fpu[SSE_MAX_CPUS];
     bool cpu_dsp[SSE_MAX_CPUS];
-} ARMSSE;
+};
 
 typedef struct ARMSSEInfo ARMSSEInfo;
 
-typedef struct ARMSSEClass {
+struct ARMSSEClass {
     SysBusDeviceClass parent_class;
     const ARMSSEInfo *info;
-} ARMSSEClass;
+};
 
-#define ARM_SSE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(ARMSSEClass, (klass), TYPE_ARM_SSE)
-#define ARM_SSE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(ARMSSEClass, (obj), TYPE_ARM_SSE)
 
 #endif
diff --git a/include/hw/arm/armv7m.h b/include/hw/arm/armv7m.h
index a30e3c6471..dcb891d9cc 100644
--- a/include/hw/arm/armv7m.h
+++ b/include/hw/arm/armv7m.h
@@ -13,11 +13,14 @@
 #include "hw/sysbus.h"
 #include "hw/intc/armv7m_nvic.h"
 #include "target/arm/idau.h"
+#include "qom/object.h"
 
 #define TYPE_BITBAND "ARM,bitband-memory"
-#define BITBAND(obj) OBJECT_CHECK(BitBandState, (obj), TYPE_BITBAND)
+typedef struct BitBandState BitBandState;
+DECLARE_INSTANCE_CHECKER(BitBandState, BITBAND,
+                         TYPE_BITBAND)
 
-typedef struct {
+struct BitBandState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -26,10 +29,12 @@ typedef struct {
     MemoryRegion iomem;
     uint32_t base;
     MemoryRegion *source_memory;
-} BitBandState;
+};
 
 #define TYPE_ARMV7M "armv7m"
-#define ARMV7M(obj) OBJECT_CHECK(ARMv7MState, (obj), TYPE_ARMV7M)
+typedef struct ARMv7MState ARMv7MState;
+DECLARE_INSTANCE_CHECKER(ARMv7MState, ARMV7M,
+                         TYPE_ARMV7M)
 
 #define ARMV7M_NUM_BITBANDS 2
 
@@ -49,7 +54,7 @@ typedef struct {
  * + Property "dsp": enable DSP (forwarded to CPU object)
  * + Property "enable-bitband": expose bitbanded IO
  */
-typedef struct ARMv7MState {
+struct ARMv7MState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -72,6 +77,6 @@ typedef struct ARMv7MState {
     bool start_powered_off;
     bool vfp;
     bool dsp;
-} ARMv7MState;
+};
 
 #endif
diff --git a/include/hw/arm/aspeed.h b/include/hw/arm/aspeed.h
index 09da9d9acc..c9747b15fc 100644
--- a/include/hw/arm/aspeed.h
+++ b/include/hw/arm/aspeed.h
@@ -10,24 +10,22 @@
 #define ARM_ASPEED_H
 
 #include "hw/boards.h"
+#include "qom/object.h"
 
 typedef struct AspeedMachineState AspeedMachineState;
 
 #define TYPE_ASPEED_MACHINE       MACHINE_TYPE_NAME("aspeed")
-#define ASPEED_MACHINE(obj) \
-    OBJECT_CHECK(AspeedMachineState, (obj), TYPE_ASPEED_MACHINE)
+typedef struct AspeedMachineClass AspeedMachineClass;
+DECLARE_OBJ_CHECKERS(AspeedMachineState, AspeedMachineClass,
+                     ASPEED_MACHINE, TYPE_ASPEED_MACHINE)
 
 #define ASPEED_MAC0_ON   (1 << 0)
 #define ASPEED_MAC1_ON   (1 << 1)
 #define ASPEED_MAC2_ON   (1 << 2)
 #define ASPEED_MAC3_ON   (1 << 3)
 
-#define ASPEED_MACHINE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedMachineClass, (klass), TYPE_ASPEED_MACHINE)
-#define ASPEED_MACHINE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedMachineClass, (obj), TYPE_ASPEED_MACHINE)
 
-typedef struct AspeedMachineClass {
+struct AspeedMachineClass {
     MachineClass parent_obj;
 
     const char *name;
@@ -40,7 +38,7 @@ typedef struct AspeedMachineClass {
     uint32_t num_cs;
     uint32_t macs_mask;
     void (*i2c_init)(AspeedMachineState *bmc);
-} AspeedMachineClass;
+};
 
 
 #endif
diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h
index d46f197cbe..05c7d53df3 100644
--- a/include/hw/arm/aspeed_soc.h
+++ b/include/hw/arm/aspeed_soc.h
@@ -27,6 +27,7 @@
 #include "hw/gpio/aspeed_gpio.h"
 #include "hw/sd/aspeed_sdhci.h"
 #include "hw/usb/hcd-ehci.h"
+#include "qom/object.h"
 
 #define ASPEED_SPIS_NUM  2
 #define ASPEED_EHCIS_NUM 2
@@ -34,7 +35,7 @@
 #define ASPEED_CPUS_NUM  2
 #define ASPEED_MACS_NUM  4
 
-typedef struct AspeedSoCState {
+struct AspeedSoCState {
     /*< private >*/
     DeviceState parent;
 
@@ -60,12 +61,15 @@ typedef struct AspeedSoCState {
     AspeedGPIOState gpio_1_8v;
     AspeedSDHCIState sdhci;
     AspeedSDHCIState emmc;
-} AspeedSoCState;
+};
+typedef struct AspeedSoCState AspeedSoCState;
 
 #define TYPE_ASPEED_SOC "aspeed-soc"
-#define ASPEED_SOC(obj) OBJECT_CHECK(AspeedSoCState, (obj), TYPE_ASPEED_SOC)
+typedef struct AspeedSoCClass AspeedSoCClass;
+DECLARE_OBJ_CHECKERS(AspeedSoCState, AspeedSoCClass,
+                     ASPEED_SOC, TYPE_ASPEED_SOC)
 
-typedef struct AspeedSoCClass {
+struct AspeedSoCClass {
     DeviceClass parent_class;
 
     const char *name;
@@ -79,12 +83,8 @@ typedef struct AspeedSoCClass {
     const int *irqmap;
     const hwaddr *memmap;
     uint32_t num_cpus;
-} AspeedSoCClass;
+};
 
-#define ASPEED_SOC_CLASS(klass)                                         \
-    OBJECT_CLASS_CHECK(AspeedSoCClass, (klass), TYPE_ASPEED_SOC)
-#define ASPEED_SOC_GET_CLASS(obj)                               \
-    OBJECT_GET_CLASS(AspeedSoCClass, (obj), TYPE_ASPEED_SOC)
 
 enum {
     ASPEED_DEV_IOMEM,
diff --git a/include/hw/arm/bcm2835_peripherals.h b/include/hw/arm/bcm2835_peripherals.h
index 48a0ad1633..b4d3ae121a 100644
--- a/include/hw/arm/bcm2835_peripherals.h
+++ b/include/hw/arm/bcm2835_peripherals.h
@@ -29,12 +29,14 @@
 #include "hw/timer/bcm2835_systmr.h"
 #include "hw/usb/hcd-dwc2.h"
 #include "hw/misc/unimp.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_PERIPHERALS "bcm2835-peripherals"
-#define BCM2835_PERIPHERALS(obj) \
-    OBJECT_CHECK(BCM2835PeripheralState, (obj), TYPE_BCM2835_PERIPHERALS)
+typedef struct BCM2835PeripheralState BCM2835PeripheralState;
+DECLARE_INSTANCE_CHECKER(BCM2835PeripheralState, BCM2835_PERIPHERALS,
+                         TYPE_BCM2835_PERIPHERALS)
 
-typedef struct BCM2835PeripheralState {
+struct BCM2835PeripheralState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -70,6 +72,6 @@ typedef struct BCM2835PeripheralState {
     UnimplementedDeviceState smi;
     DWC2State dwc2;
     UnimplementedDeviceState sdramc;
-} BCM2835PeripheralState;
+};
 
 #endif /* BCM2835_PERIPHERALS_H */
diff --git a/include/hw/arm/bcm2836.h b/include/hw/arm/bcm2836.h
index 79dfff9d73..181d9563d0 100644
--- a/include/hw/arm/bcm2836.h
+++ b/include/hw/arm/bcm2836.h
@@ -15,9 +15,13 @@
 #include "hw/arm/bcm2835_peripherals.h"
 #include "hw/intc/bcm2836_control.h"
 #include "target/arm/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_BCM283X "bcm283x"
-#define BCM283X(obj) OBJECT_CHECK(BCM283XState, (obj), TYPE_BCM283X)
+typedef struct BCM283XClass BCM283XClass;
+typedef struct BCM283XState BCM283XState;
+DECLARE_OBJ_CHECKERS(BCM283XState, BCM283XClass,
+                     BCM283X, TYPE_BCM283X)
 
 #define BCM283X_NCPUS 4
 
@@ -28,7 +32,7 @@
 #define TYPE_BCM2836 "bcm2836"
 #define TYPE_BCM2837 "bcm2837"
 
-typedef struct BCM283XState {
+struct BCM283XState {
     /*< private >*/
     DeviceState parent_obj;
     /*< public >*/
@@ -40,18 +44,14 @@ typedef struct BCM283XState {
     } cpu[BCM283X_NCPUS];
     BCM2836ControlState control;
     BCM2835PeripheralState peripherals;
-} BCM283XState;
+};
 
 typedef struct BCM283XInfo BCM283XInfo;
 
-typedef struct BCM283XClass {
+struct BCM283XClass {
     DeviceClass parent_class;
     const BCM283XInfo *info;
-} BCM283XClass;
+};
 
-#define BCM283X_CLASS(klass) \
-    OBJECT_CLASS_CHECK(BCM283XClass, (klass), TYPE_BCM283X)
-#define BCM283X_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(BCM283XClass, (obj), TYPE_BCM283X)
 
 #endif /* BCM2836_H */
diff --git a/include/hw/arm/digic.h b/include/hw/arm/digic.h
index 63785baaa8..f3ba398914 100644
--- a/include/hw/arm/digic.h
+++ b/include/hw/arm/digic.h
@@ -21,14 +21,17 @@
 #include "cpu.h"
 #include "hw/timer/digic-timer.h"
 #include "hw/char/digic-uart.h"
+#include "qom/object.h"
 
 #define TYPE_DIGIC "digic"
 
-#define DIGIC(obj) OBJECT_CHECK(DigicState, (obj), TYPE_DIGIC)
+typedef struct DigicState DigicState;
+DECLARE_INSTANCE_CHECKER(DigicState, DIGIC,
+                         TYPE_DIGIC)
 
 #define DIGIC4_NB_TIMERS 3
 
-typedef struct DigicState {
+struct DigicState {
     /*< private >*/
     DeviceState parent_obj;
     /*< public >*/
@@ -37,6 +40,6 @@ typedef struct DigicState {
 
     DigicTimerState timer[DIGIC4_NB_TIMERS];
     DigicUartState uart;
-} DigicState;
+};
 
 #endif /* HW_ARM_DIGIC_H */
diff --git a/include/hw/arm/exynos4210.h b/include/hw/arm/exynos4210.h
index 55260394af..c2de1dc102 100644
--- a/include/hw/arm/exynos4210.h
+++ b/include/hw/arm/exynos4210.h
@@ -27,6 +27,7 @@
 #include "hw/or-irq.h"
 #include "hw/sysbus.h"
 #include "target/arm/cpu-qom.h"
+#include "qom/object.h"
 
 #define EXYNOS4210_NCPUS                    2
 
@@ -85,7 +86,7 @@ typedef struct Exynos4210Irq {
     qemu_irq board_irqs[EXYNOS4210_MAX_INT_COMBINER_IN_IRQ];
 } Exynos4210Irq;
 
-typedef struct Exynos4210State {
+struct Exynos4210State {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -101,11 +102,12 @@ typedef struct Exynos4210State {
     MemoryRegion bootreg_mem;
     I2CBus *i2c_if[EXYNOS4210_I2C_NUMBER];
     qemu_or_irq pl330_irq_orgate[EXYNOS4210_NUM_DMA];
-} Exynos4210State;
+};
+typedef struct Exynos4210State Exynos4210State;
 
 #define TYPE_EXYNOS4210_SOC "exynos4210"
-#define EXYNOS4210_SOC(obj) \
-    OBJECT_CHECK(Exynos4210State, obj, TYPE_EXYNOS4210_SOC)
+DECLARE_INSTANCE_CHECKER(Exynos4210State, EXYNOS4210_SOC,
+                         TYPE_EXYNOS4210_SOC)
 
 void exynos4210_write_secondary(ARMCPU *cpu,
         const struct arm_boot_info *info);
diff --git a/include/hw/arm/fsl-imx25.h b/include/hw/arm/fsl-imx25.h
index 54ee1bfd78..e239505724 100644
--- a/include/hw/arm/fsl-imx25.h
+++ b/include/hw/arm/fsl-imx25.h
@@ -32,9 +32,12 @@
 #include "hw/watchdog/wdt_imx2.h"
 #include "exec/memory.h"
 #include "target/arm/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_FSL_IMX25 "fsl,imx25"
-#define FSL_IMX25(obj) OBJECT_CHECK(FslIMX25State, (obj), TYPE_FSL_IMX25)
+typedef struct FslIMX25State FslIMX25State;
+DECLARE_INSTANCE_CHECKER(FslIMX25State, FSL_IMX25,
+                         TYPE_FSL_IMX25)
 
 #define FSL_IMX25_NUM_UARTS 5
 #define FSL_IMX25_NUM_GPTS 4
@@ -44,7 +47,7 @@
 #define FSL_IMX25_NUM_ESDHCS 2
 #define FSL_IMX25_NUM_USBS 2
 
-typedef struct FslIMX25State {
+struct FslIMX25State {
     /*< private >*/
     DeviceState parent_obj;
 
@@ -66,7 +69,7 @@ typedef struct FslIMX25State {
     MemoryRegion   iram;
     MemoryRegion   iram_alias;
     uint32_t       phy_num;
-} FslIMX25State;
+};
 
 /**
  * i.MX25 memory map
diff --git a/include/hw/arm/fsl-imx31.h b/include/hw/arm/fsl-imx31.h
index dd8561b309..64b4ca07b7 100644
--- a/include/hw/arm/fsl-imx31.h
+++ b/include/hw/arm/fsl-imx31.h
@@ -28,16 +28,19 @@
 #include "hw/watchdog/wdt_imx2.h"
 #include "exec/memory.h"
 #include "target/arm/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_FSL_IMX31 "fsl,imx31"
-#define FSL_IMX31(obj) OBJECT_CHECK(FslIMX31State, (obj), TYPE_FSL_IMX31)
+typedef struct FslIMX31State FslIMX31State;
+DECLARE_INSTANCE_CHECKER(FslIMX31State, FSL_IMX31,
+                         TYPE_FSL_IMX31)
 
 #define FSL_IMX31_NUM_UARTS 2
 #define FSL_IMX31_NUM_EPITS 2
 #define FSL_IMX31_NUM_I2CS 3
 #define FSL_IMX31_NUM_GPIOS 3
 
-typedef struct FslIMX31State {
+struct FslIMX31State {
     /*< private >*/
     DeviceState parent_obj;
 
@@ -55,7 +58,7 @@ typedef struct FslIMX31State {
     MemoryRegion   rom;
     MemoryRegion   iram;
     MemoryRegion   iram_alias;
-} FslIMX31State;
+};
 
 #define FSL_IMX31_SECURE_ROM_ADDR       0x00000000
 #define FSL_IMX31_SECURE_ROM_SIZE       0x4000
diff --git a/include/hw/arm/fsl-imx6.h b/include/hw/arm/fsl-imx6.h
index 162fe99375..602b9aff36 100644
--- a/include/hw/arm/fsl-imx6.h
+++ b/include/hw/arm/fsl-imx6.h
@@ -34,9 +34,12 @@
 #include "hw/usb/imx-usb-phy.h"
 #include "exec/memory.h"
 #include "cpu.h"
+#include "qom/object.h"
 
 #define TYPE_FSL_IMX6 "fsl,imx6"
-#define FSL_IMX6(obj) OBJECT_CHECK(FslIMX6State, (obj), TYPE_FSL_IMX6)
+typedef struct FslIMX6State FslIMX6State;
+DECLARE_INSTANCE_CHECKER(FslIMX6State, FSL_IMX6,
+                         TYPE_FSL_IMX6)
 
 #define FSL_IMX6_NUM_CPUS 4
 #define FSL_IMX6_NUM_UARTS 5
@@ -49,7 +52,7 @@
 #define FSL_IMX6_NUM_USB_PHYS 2
 #define FSL_IMX6_NUM_USBS 4
 
-typedef struct FslIMX6State {
+struct FslIMX6State {
     /*< private >*/
     DeviceState parent_obj;
 
@@ -74,7 +77,7 @@ typedef struct FslIMX6State {
     MemoryRegion   ocram;
     MemoryRegion   ocram_alias;
     uint32_t       phy_num;
-} FslIMX6State;
+};
 
 
 #define FSL_IMX6_MMDC_ADDR 0x10000000
diff --git a/include/hw/arm/fsl-imx6ul.h b/include/hw/arm/fsl-imx6ul.h
index fcbaf3dc86..e4862fdb2c 100644
--- a/include/hw/arm/fsl-imx6ul.h
+++ b/include/hw/arm/fsl-imx6ul.h
@@ -38,9 +38,12 @@
 #include "hw/usb/imx-usb-phy.h"
 #include "exec/memory.h"
 #include "cpu.h"
+#include "qom/object.h"
 
 #define TYPE_FSL_IMX6UL "fsl,imx6ul"
-#define FSL_IMX6UL(obj) OBJECT_CHECK(FslIMX6ULState, (obj), TYPE_FSL_IMX6UL)
+typedef struct FslIMX6ULState FslIMX6ULState;
+DECLARE_INSTANCE_CHECKER(FslIMX6ULState, FSL_IMX6UL,
+                         TYPE_FSL_IMX6UL)
 
 enum FslIMX6ULConfiguration {
     FSL_IMX6UL_NUM_CPUS         = 1,
@@ -60,7 +63,7 @@ enum FslIMX6ULConfiguration {
     FSL_IMX6UL_NUM_USBS         = 2,
 };
 
-typedef struct FslIMX6ULState {
+struct FslIMX6ULState {
     /*< private >*/
     DeviceState    parent_obj;
 
@@ -89,7 +92,7 @@ typedef struct FslIMX6ULState {
     MemoryRegion       ocram_alias;
 
     uint32_t           phy_num[FSL_IMX6UL_NUM_ETHS];
-} FslIMX6ULState;
+};
 
 enum FslIMX6ULMemoryMap {
     FSL_IMX6UL_MMDC_ADDR            = 0x80000000,
diff --git a/include/hw/arm/fsl-imx7.h b/include/hw/arm/fsl-imx7.h
index ad88923707..434d1d0641 100644
--- a/include/hw/arm/fsl-imx7.h
+++ b/include/hw/arm/fsl-imx7.h
@@ -39,9 +39,12 @@
 #include "hw/pci-host/designware.h"
 #include "hw/usb/chipidea.h"
 #include "cpu.h"
+#include "qom/object.h"
 
 #define TYPE_FSL_IMX7 "fsl,imx7"
-#define FSL_IMX7(obj) OBJECT_CHECK(FslIMX7State, (obj), TYPE_FSL_IMX7)
+typedef struct FslIMX7State FslIMX7State;
+DECLARE_INSTANCE_CHECKER(FslIMX7State, FSL_IMX7,
+                         TYPE_FSL_IMX7)
 
 enum FslIMX7Configuration {
     FSL_IMX7_NUM_CPUS         = 2,
@@ -59,7 +62,7 @@ enum FslIMX7Configuration {
     FSL_IMX7_NUM_ADCS         = 2,
 };
 
-typedef struct FslIMX7State {
+struct FslIMX7State {
     /*< private >*/
     DeviceState    parent_obj;
 
@@ -82,7 +85,7 @@ typedef struct FslIMX7State {
     ChipideaState      usb[FSL_IMX7_NUM_USBS];
     DesignwarePCIEHost pcie;
     uint32_t           phy_num[FSL_IMX7_NUM_ETHS];
-} FslIMX7State;
+};
 
 enum FslIMX7MemoryMap {
     FSL_IMX7_MMDC_ADDR            = 0x80000000,
diff --git a/include/hw/arm/linux-boot-if.h b/include/hw/arm/linux-boot-if.h
index 7bbdfd1cc6..c85f33b2c5 100644
--- a/include/hw/arm/linux-boot-if.h
+++ b/include/hw/arm/linux-boot-if.h
@@ -9,16 +9,15 @@
 #include "qom/object.h"
 
 #define TYPE_ARM_LINUX_BOOT_IF "arm-linux-boot-if"
-#define ARM_LINUX_BOOT_IF_CLASS(klass) \
-    OBJECT_CLASS_CHECK(ARMLinuxBootIfClass, (klass), TYPE_ARM_LINUX_BOOT_IF)
-#define ARM_LINUX_BOOT_IF_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(ARMLinuxBootIfClass, (obj), TYPE_ARM_LINUX_BOOT_IF)
+typedef struct ARMLinuxBootIfClass ARMLinuxBootIfClass;
+DECLARE_CLASS_CHECKERS(ARMLinuxBootIfClass, ARM_LINUX_BOOT_IF,
+                       TYPE_ARM_LINUX_BOOT_IF)
 #define ARM_LINUX_BOOT_IF(obj) \
     INTERFACE_CHECK(ARMLinuxBootIf, (obj), TYPE_ARM_LINUX_BOOT_IF)
 
 typedef struct ARMLinuxBootIf ARMLinuxBootIf;
 
-typedef struct ARMLinuxBootIfClass {
+struct ARMLinuxBootIfClass {
     /*< private >*/
     InterfaceClass parent_class;
 
@@ -35,6 +34,6 @@ typedef struct ARMLinuxBootIfClass {
      * (or for a CPU which doesn't support TrustZone)
      */
     void (*arm_linux_init)(ARMLinuxBootIf *obj, bool secure_boot);
-} ARMLinuxBootIfClass;
+};
 
 #endif
diff --git a/include/hw/arm/msf2-soc.h b/include/hw/arm/msf2-soc.h
index c9cb214aa6..9b93d0d64e 100644
--- a/include/hw/arm/msf2-soc.h
+++ b/include/hw/arm/msf2-soc.h
@@ -30,9 +30,12 @@
 #include "hw/misc/msf2-sysreg.h"
 #include "hw/ssi/mss-spi.h"
 #include "hw/net/msf2-emac.h"
+#include "qom/object.h"
 
 #define TYPE_MSF2_SOC     "msf2-soc"
-#define MSF2_SOC(obj)     OBJECT_CHECK(MSF2State, (obj), TYPE_MSF2_SOC)
+typedef struct MSF2State MSF2State;
+DECLARE_INSTANCE_CHECKER(MSF2State, MSF2_SOC,
+                         TYPE_MSF2_SOC)
 
 #define MSF2_NUM_SPIS         2
 #define MSF2_NUM_UARTS        2
@@ -44,7 +47,7 @@
  */
 #define MSF2_NUM_TIMERS       2
 
-typedef struct MSF2State {
+struct MSF2State {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -64,6 +67,6 @@ typedef struct MSF2State {
     MSSTimerState timer;
     MSSSpiState spi[MSF2_NUM_SPIS];
     MSF2EmacState emac;
-} MSF2State;
+};
 
 #endif
diff --git a/include/hw/arm/nrf51_soc.h b/include/hw/arm/nrf51_soc.h
index 0cb78aafea..b69492b29d 100644
--- a/include/hw/arm/nrf51_soc.h
+++ b/include/hw/arm/nrf51_soc.h
@@ -17,14 +17,16 @@
 #include "hw/gpio/nrf51_gpio.h"
 #include "hw/nvram/nrf51_nvm.h"
 #include "hw/timer/nrf51_timer.h"
+#include "qom/object.h"
 
 #define TYPE_NRF51_SOC "nrf51-soc"
-#define NRF51_SOC(obj) \
-    OBJECT_CHECK(NRF51State, (obj), TYPE_NRF51_SOC)
+typedef struct NRF51State NRF51State;
+DECLARE_INSTANCE_CHECKER(NRF51State, NRF51_SOC,
+                         TYPE_NRF51_SOC)
 
 #define NRF51_NUM_TIMERS 3
 
-typedef struct NRF51State {
+struct NRF51State {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -50,6 +52,6 @@ typedef struct NRF51State {
 
     MemoryRegion container;
 
-} NRF51State;
+};
 
 #endif
diff --git a/include/hw/arm/omap.h b/include/hw/arm/omap.h
index 6be386d0e2..0dbf1712f4 100644
--- a/include/hw/arm/omap.h
+++ b/include/hw/arm/omap.h
@@ -24,6 +24,7 @@
 #include "hw/input/tsc2xxx.h"
 #include "target/arm/cpu-qom.h"
 #include "qemu/log.h"
+#include "qom/object.h"
 
 # define OMAP_EMIFS_BASE	0x00000000
 # define OMAP2_Q0_BASE		0x00000000
@@ -69,10 +70,10 @@ void omap_clk_reparent(omap_clk clk, omap_clk parent);
 
 /* omap_intc.c */
 #define TYPE_OMAP_INTC "common-omap-intc"
-#define OMAP_INTC(obj)                                              \
-    OBJECT_CHECK(omap_intr_handler, (obj), TYPE_OMAP_INTC)
-
 typedef struct omap_intr_handler_s omap_intr_handler;
+DECLARE_INSTANCE_CHECKER(omap_intr_handler, OMAP_INTC,
+                         TYPE_OMAP_INTC)
+
 
 /*
  * TODO: Ideally we should have a clock framework that
@@ -93,9 +94,10 @@ void omap_intc_set_fclk(omap_intr_handler *intc, omap_clk clk);
 
 /* omap_i2c.c */
 #define TYPE_OMAP_I2C "omap_i2c"
-#define OMAP_I2C(obj) OBJECT_CHECK(OMAPI2CState, (obj), TYPE_OMAP_I2C)
-
 typedef struct OMAPI2CState OMAPI2CState;
+DECLARE_INSTANCE_CHECKER(OMAPI2CState, OMAP_I2C,
+                         TYPE_OMAP_I2C)
+
 
 /* TODO: clock framework (see above) */
 void omap_i2c_set_iclk(OMAPI2CState *i2c, omap_clk clk);
@@ -103,12 +105,12 @@ void omap_i2c_set_fclk(OMAPI2CState *i2c, omap_clk clk);
 
 /* omap_gpio.c */
 #define TYPE_OMAP1_GPIO "omap-gpio"
-#define OMAP1_GPIO(obj)                                         \
-    OBJECT_CHECK(struct omap_gpif_s, (obj), TYPE_OMAP1_GPIO)
+DECLARE_INSTANCE_CHECKER(struct omap_gpif_s, OMAP1_GPIO,
+                         TYPE_OMAP1_GPIO)
 
 #define TYPE_OMAP2_GPIO "omap2-gpio"
-#define OMAP2_GPIO(obj)                                         \
-    OBJECT_CHECK(struct omap2_gpif_s, (obj), TYPE_OMAP2_GPIO)
+DECLARE_INSTANCE_CHECKER(struct omap2_gpif_s, OMAP2_GPIO,
+                         TYPE_OMAP2_GPIO)
 
 typedef struct omap_gpif_s omap_gpif;
 typedef struct omap2_gpif_s omap2_gpif;
diff --git a/include/hw/arm/pxa.h b/include/hw/arm/pxa.h
index 09c1336071..9046876134 100644
--- a/include/hw/arm/pxa.h
+++ b/include/hw/arm/pxa.h
@@ -13,6 +13,7 @@
 #include "exec/memory.h"
 #include "target/arm/cpu-qom.h"
 #include "hw/pcmcia.h"
+#include "qom/object.h"
 
 /* Interrupt numbers */
 # define PXA2XX_PIC_SSP3	0
@@ -88,7 +89,8 @@ void pxa2xx_lcd_vsync_notifier(PXA2xxLCDState *s, qemu_irq handler);
 /* pxa2xx_mmci.c */
 #define TYPE_PXA2XX_MMCI "pxa2xx-mmci"
 typedef struct PXA2xxMMCIState PXA2xxMMCIState;
-#define PXA2XX_MMCI(obj) OBJECT_CHECK(PXA2xxMMCIState, (obj), TYPE_PXA2XX_MMCI)
+DECLARE_INSTANCE_CHECKER(PXA2xxMMCIState, PXA2XX_MMCI,
+                         TYPE_PXA2XX_MMCI)
 
 PXA2xxMMCIState *pxa2xx_mmci_init(MemoryRegion *sysmem,
                 hwaddr base,
@@ -99,8 +101,8 @@ void pxa2xx_mmci_handlers(PXA2xxMMCIState *s, qemu_irq readonly,
 /* pxa2xx_pcmcia.c */
 #define TYPE_PXA2XX_PCMCIA "pxa2xx-pcmcia"
 typedef struct PXA2xxPCMCIAState PXA2xxPCMCIAState;
-#define PXA2XX_PCMCIA(obj) \
-    OBJECT_CHECK(PXA2xxPCMCIAState, obj, TYPE_PXA2XX_PCMCIA)
+DECLARE_INSTANCE_CHECKER(PXA2xxPCMCIAState, PXA2XX_PCMCIA,
+                         TYPE_PXA2XX_PCMCIA)
 
 PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem,
                                       hwaddr base);
@@ -128,12 +130,13 @@ I2CBus *pxa2xx_i2c_bus(PXA2xxI2CState *s);
 
 #define TYPE_PXA2XX_I2C "pxa2xx_i2c"
 typedef struct PXA2xxI2SState PXA2xxI2SState;
-#define PXA2XX_I2C(obj) \
-    OBJECT_CHECK(PXA2xxI2CState, (obj), TYPE_PXA2XX_I2C)
+DECLARE_INSTANCE_CHECKER(PXA2xxI2CState, PXA2XX_I2C,
+                         TYPE_PXA2XX_I2C)
 
 #define TYPE_PXA2XX_FIR "pxa2xx-fir"
 typedef struct PXA2xxFIrState PXA2xxFIrState;
-#define PXA2XX_FIR(obj) OBJECT_CHECK(PXA2xxFIrState, (obj), TYPE_PXA2XX_FIR)
+DECLARE_INSTANCE_CHECKER(PXA2xxFIrState, PXA2XX_FIR,
+                         TYPE_PXA2XX_FIR)
 
 typedef struct {
     ARMCPU *cpu;
diff --git a/include/hw/arm/smmu-common.h b/include/hw/arm/smmu-common.h
index 880dccd7c0..54d0872fd8 100644
--- a/include/hw/arm/smmu-common.h
+++ b/include/hw/arm/smmu-common.h
@@ -21,6 +21,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/pci/pci.h"
+#include "qom/object.h"
 
 #define SMMU_PCI_BUS_MAX      256
 #define SMMU_PCI_DEVFN_MAX    256
@@ -102,7 +103,7 @@ typedef struct SMMUIOTLBKey {
     uint8_t level;
 } SMMUIOTLBKey;
 
-typedef struct SMMUState {
+struct SMMUState {
     /* <private> */
     SysBusDevice  dev;
     const char *mrtypename;
@@ -116,9 +117,10 @@ typedef struct SMMUState {
     QLIST_HEAD(, SMMUDevice) devices_with_notifiers;
     uint8_t bus_num;
     PCIBus *primary_bus;
-} SMMUState;
+};
+typedef struct SMMUState SMMUState;
 
-typedef struct {
+struct SMMUBaseClass {
     /* <private> */
     SysBusDeviceClass parent_class;
 
@@ -126,14 +128,12 @@ typedef struct {
 
     DeviceRealize parent_realize;
 
-} SMMUBaseClass;
+};
+typedef struct SMMUBaseClass SMMUBaseClass;
 
 #define TYPE_ARM_SMMU "arm-smmu"
-#define ARM_SMMU(obj) OBJECT_CHECK(SMMUState, (obj), TYPE_ARM_SMMU)
-#define ARM_SMMU_CLASS(klass)                                    \
-    OBJECT_CLASS_CHECK(SMMUBaseClass, (klass), TYPE_ARM_SMMU)
-#define ARM_SMMU_GET_CLASS(obj)                              \
-    OBJECT_GET_CLASS(SMMUBaseClass, (obj), TYPE_ARM_SMMU)
+DECLARE_OBJ_CHECKERS(SMMUState, SMMUBaseClass,
+                     ARM_SMMU, TYPE_ARM_SMMU)
 
 /* Return the SMMUPciBus handle associated to a PCI bus number */
 SMMUPciBus *smmu_find_smmu_pcibus(SMMUState *s, uint8_t bus_num);
diff --git a/include/hw/arm/smmuv3.h b/include/hw/arm/smmuv3.h
index 68d7a963e0..2a3f6dd197 100644
--- a/include/hw/arm/smmuv3.h
+++ b/include/hw/arm/smmuv3.h
@@ -21,6 +21,7 @@
 
 #include "hw/arm/smmu-common.h"
 #include "hw/registerfields.h"
+#include "qom/object.h"
 
 #define TYPE_SMMUV3_IOMMU_MEMORY_REGION "smmuv3-iommu-memory-region"
 
@@ -32,7 +33,7 @@ typedef struct SMMUQueue {
      uint8_t log2size;
 } SMMUQueue;
 
-typedef struct SMMUv3State {
+struct SMMUv3State {
     SMMUState     smmu_state;
 
     uint32_t features;
@@ -61,7 +62,8 @@ typedef struct SMMUv3State {
 
     qemu_irq     irq[4];
     QemuMutex mutex;
-} SMMUv3State;
+};
+typedef struct SMMUv3State SMMUv3State;
 
 typedef enum {
     SMMU_IRQ_EVTQ,
@@ -70,20 +72,18 @@ typedef enum {
     SMMU_IRQ_GERROR,
 } SMMUIrq;
 
-typedef struct {
+struct SMMUv3Class {
     /*< private >*/
     SMMUBaseClass smmu_base_class;
     /*< public >*/
 
     DeviceRealize parent_realize;
     DeviceReset   parent_reset;
-} SMMUv3Class;
+};
+typedef struct SMMUv3Class SMMUv3Class;
 
 #define TYPE_ARM_SMMUV3   "arm-smmuv3"
-#define ARM_SMMUV3(obj) OBJECT_CHECK(SMMUv3State, (obj), TYPE_ARM_SMMUV3)
-#define ARM_SMMUV3_CLASS(klass)                              \
-    OBJECT_CLASS_CHECK(SMMUv3Class, (klass), TYPE_ARM_SMMUV3)
-#define ARM_SMMUV3_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SMMUv3Class, (obj), TYPE_ARM_SMMUV3)
+DECLARE_OBJ_CHECKERS(SMMUv3State, SMMUv3Class,
+                     ARM_SMMUV3, TYPE_ARM_SMMUV3)
 
 #endif
diff --git a/include/hw/arm/stm32f205_soc.h b/include/hw/arm/stm32f205_soc.h
index 922a733f88..9c2f4818a6 100644
--- a/include/hw/arm/stm32f205_soc.h
+++ b/include/hw/arm/stm32f205_soc.h
@@ -32,10 +32,12 @@
 #include "hw/or-irq.h"
 #include "hw/ssi/stm32f2xx_spi.h"
 #include "hw/arm/armv7m.h"
+#include "qom/object.h"
 
 #define TYPE_STM32F205_SOC "stm32f205-soc"
-#define STM32F205_SOC(obj) \
-    OBJECT_CHECK(STM32F205State, (obj), TYPE_STM32F205_SOC)
+typedef struct STM32F205State STM32F205State;
+DECLARE_INSTANCE_CHECKER(STM32F205State, STM32F205_SOC,
+                         TYPE_STM32F205_SOC)
 
 #define STM_NUM_USARTS 6
 #define STM_NUM_TIMERS 4
@@ -47,7 +49,7 @@
 #define SRAM_BASE_ADDRESS 0x20000000
 #define SRAM_SIZE (128 * 1024)
 
-typedef struct STM32F205State {
+struct STM32F205State {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -63,6 +65,6 @@ typedef struct STM32F205State {
     STM32F2XXSPIState spi[STM_NUM_SPIS];
 
     qemu_or_irq *adc_irqs;
-} STM32F205State;
+};
 
 #endif
diff --git a/include/hw/arm/stm32f405_soc.h b/include/hw/arm/stm32f405_soc.h
index 1fe97f8c3a..f1a22763f4 100644
--- a/include/hw/arm/stm32f405_soc.h
+++ b/include/hw/arm/stm32f405_soc.h
@@ -33,10 +33,12 @@
 #include "hw/or-irq.h"
 #include "hw/ssi/stm32f2xx_spi.h"
 #include "hw/arm/armv7m.h"
+#include "qom/object.h"
 
 #define TYPE_STM32F405_SOC "stm32f405-soc"
-#define STM32F405_SOC(obj) \
-    OBJECT_CHECK(STM32F405State, (obj), TYPE_STM32F405_SOC)
+typedef struct STM32F405State STM32F405State;
+DECLARE_INSTANCE_CHECKER(STM32F405State, STM32F405_SOC,
+                         TYPE_STM32F405_SOC)
 
 #define STM_NUM_USARTS 7
 #define STM_NUM_TIMERS 4
@@ -48,7 +50,7 @@
 #define SRAM_BASE_ADDRESS 0x20000000
 #define SRAM_SIZE (192 * 1024)
 
-typedef struct STM32F405State {
+struct STM32F405State {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -68,6 +70,6 @@ typedef struct STM32F405State {
     MemoryRegion sram;
     MemoryRegion flash;
     MemoryRegion flash_alias;
-} STM32F405State;
+};
 
 #endif
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index dff67e1bef..392b0bd571 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -37,6 +37,7 @@
 #include "hw/block/flash.h"
 #include "sysemu/kvm.h"
 #include "hw/intc/arm_gicv3_common.h"
+#include "qom/object.h"
 
 #define NUM_GICV2M_SPIS       64
 #define NUM_VIRTIO_TRANSPORTS 32
@@ -115,7 +116,7 @@ typedef struct MemMapEntry {
     hwaddr size;
 } MemMapEntry;
 
-typedef struct {
+struct VirtMachineClass {
     MachineClass parent;
     bool disallow_affinity_adjustment;
     bool no_its;
@@ -126,9 +127,10 @@ typedef struct {
     bool no_ged;   /* Machines < 4.2 has no support for ACPI GED device */
     bool kvm_no_adjvtime;
     bool acpi_expose_flash;
-} VirtMachineClass;
+};
+typedef struct VirtMachineClass VirtMachineClass;
 
-typedef struct {
+struct VirtMachineState {
     MachineState parent;
     Notifier machine_done;
     DeviceState *platform_bus_dev;
@@ -162,17 +164,14 @@ typedef struct {
     DeviceState *gic;
     DeviceState *acpi_dev;
     Notifier powerdown_notifier;
-} VirtMachineState;
+};
+typedef struct VirtMachineState VirtMachineState;
 
 #define VIRT_ECAM_ID(high) (high ? VIRT_HIGH_PCIE_ECAM : VIRT_PCIE_ECAM)
 
 #define TYPE_VIRT_MACHINE   MACHINE_TYPE_NAME("virt")
-#define VIRT_MACHINE(obj) \
-    OBJECT_CHECK(VirtMachineState, (obj), TYPE_VIRT_MACHINE)
-#define VIRT_MACHINE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(VirtMachineClass, obj, TYPE_VIRT_MACHINE)
-#define VIRT_MACHINE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(VirtMachineClass, klass, TYPE_VIRT_MACHINE)
+DECLARE_OBJ_CHECKERS(VirtMachineState, VirtMachineClass,
+                     VIRT_MACHINE, TYPE_VIRT_MACHINE)
 
 void virt_acpi_setup(VirtMachineState *vms);
 bool virt_is_acpi_enabled(VirtMachineState *vms);
diff --git a/include/hw/arm/xlnx-versal.h b/include/hw/arm/xlnx-versal.h
index 9c9f47ba9d..eaa9023fd6 100644
--- a/include/hw/arm/xlnx-versal.h
+++ b/include/hw/arm/xlnx-versal.h
@@ -20,9 +20,12 @@
 #include "hw/dma/xlnx-zdma.h"
 #include "hw/net/cadence_gem.h"
 #include "hw/rtc/xlnx-zynqmp-rtc.h"
+#include "qom/object.h"
 
 #define TYPE_XLNX_VERSAL "xlnx-versal"
-#define XLNX_VERSAL(obj) OBJECT_CHECK(Versal, (obj), TYPE_XLNX_VERSAL)
+typedef struct Versal Versal;
+DECLARE_INSTANCE_CHECKER(Versal, XLNX_VERSAL,
+                         TYPE_XLNX_VERSAL)
 
 #define XLNX_VERSAL_NR_ACPUS   2
 #define XLNX_VERSAL_NR_UARTS   2
@@ -31,7 +34,7 @@
 #define XLNX_VERSAL_NR_SDS     2
 #define XLNX_VERSAL_NR_IRQS    192
 
-typedef struct Versal {
+struct Versal {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -74,7 +77,7 @@ typedef struct Versal {
         MemoryRegion *mr_ddr;
         uint32_t psci_conduit;
     } cfg;
-} Versal;
+};
 
 /* Memory-map and IRQ definitions. Copied a subset from
  * auto-generated files.  */
diff --git a/include/hw/arm/xlnx-zynqmp.h b/include/hw/arm/xlnx-zynqmp.h
index 53076fa29a..4cc97b4610 100644
--- a/include/hw/arm/xlnx-zynqmp.h
+++ b/include/hw/arm/xlnx-zynqmp.h
@@ -32,10 +32,12 @@
 #include "hw/rtc/xlnx-zynqmp-rtc.h"
 #include "hw/cpu/cluster.h"
 #include "target/arm/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_XLNX_ZYNQMP "xlnx,zynqmp"
-#define XLNX_ZYNQMP(obj) OBJECT_CHECK(XlnxZynqMPState, (obj), \
-                                       TYPE_XLNX_ZYNQMP)
+typedef struct XlnxZynqMPState XlnxZynqMPState;
+DECLARE_INSTANCE_CHECKER(XlnxZynqMPState, XLNX_ZYNQMP,
+                         TYPE_XLNX_ZYNQMP)
 
 #define XLNX_ZYNQMP_NUM_APU_CPUS 4
 #define XLNX_ZYNQMP_NUM_RPU_CPUS 2
@@ -73,7 +75,7 @@
 #define XLNX_ZYNQMP_MAX_RAM_SIZE (XLNX_ZYNQMP_MAX_LOW_RAM_SIZE + \
                                   XLNX_ZYNQMP_MAX_HIGH_RAM_SIZE)
 
-typedef struct XlnxZynqMPState {
+struct XlnxZynqMPState {
     /*< private >*/
     DeviceState parent_obj;
 
@@ -112,6 +114,6 @@ typedef struct XlnxZynqMPState {
     bool virt;
     /* Has the RPU subsystem?  */
     bool has_rpu;
-}  XlnxZynqMPState;
+};
 
 #endif
diff --git a/include/hw/block/flash.h b/include/hw/block/flash.h
index 2136a2d5e4..3e26303705 100644
--- a/include/hw/block/flash.h
+++ b/include/hw/block/flash.h
@@ -4,14 +4,15 @@
 /* NOR flash devices */
 
 #include "exec/hwaddr.h"
+#include "qom/object.h"
 
 /* pflash_cfi01.c */
 
 #define TYPE_PFLASH_CFI01 "cfi.pflash01"
-#define PFLASH_CFI01(obj) \
-    OBJECT_CHECK(PFlashCFI01, (obj), TYPE_PFLASH_CFI01)
-
 typedef struct PFlashCFI01 PFlashCFI01;
+DECLARE_INSTANCE_CHECKER(PFlashCFI01, PFLASH_CFI01,
+                         TYPE_PFLASH_CFI01)
+
 
 PFlashCFI01 *pflash_cfi01_register(hwaddr base,
                                    const char *name,
@@ -29,10 +30,10 @@ void pflash_cfi01_legacy_drive(PFlashCFI01 *dev, DriveInfo *dinfo);
 /* pflash_cfi02.c */
 
 #define TYPE_PFLASH_CFI02 "cfi.pflash02"
-#define PFLASH_CFI02(obj) \
-    OBJECT_CHECK(PFlashCFI02, (obj), TYPE_PFLASH_CFI02)
-
 typedef struct PFlashCFI02 PFlashCFI02;
+DECLARE_INSTANCE_CHECKER(PFlashCFI02, PFLASH_CFI02,
+                         TYPE_PFLASH_CFI02)
+
 
 PFlashCFI02 *pflash_cfi02_register(hwaddr base,
                                    const char *name,
diff --git a/include/hw/block/swim.h b/include/hw/block/swim.h
index 9d8b65c561..8287da7c30 100644
--- a/include/hw/block/swim.h
+++ b/include/hw/block/swim.h
@@ -13,6 +13,7 @@
 
 #include "qemu/osdep.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define SWIM_MAX_FD            2
 
@@ -21,7 +22,8 @@ typedef struct SWIMBus SWIMBus;
 typedef struct SWIMCtrl SWIMCtrl;
 
 #define TYPE_SWIM_DRIVE "swim-drive"
-#define SWIM_DRIVE(obj) OBJECT_CHECK(SWIMDrive, (obj), TYPE_SWIM_DRIVE)
+DECLARE_INSTANCE_CHECKER(SWIMDrive, SWIM_DRIVE,
+                         TYPE_SWIM_DRIVE)
 
 struct SWIMDrive {
     DeviceState qdev;
@@ -30,7 +32,8 @@ struct SWIMDrive {
 };
 
 #define TYPE_SWIM_BUS "swim-bus"
-#define SWIM_BUS(obj) OBJECT_CHECK(SWIMBus, (obj), TYPE_SWIM_BUS)
+DECLARE_INSTANCE_CHECKER(SWIMBus, SWIM_BUS,
+                         TYPE_SWIM_BUS)
 
 struct SWIMBus {
     BusState bus;
@@ -67,10 +70,12 @@ struct SWIMCtrl {
 };
 
 #define TYPE_SWIM "swim"
-#define SWIM(obj) OBJECT_CHECK(Swim, (obj), TYPE_SWIM)
+typedef struct Swim Swim;
+DECLARE_INSTANCE_CHECKER(Swim, SWIM,
+                         TYPE_SWIM)
 
-typedef struct Swim {
+struct Swim {
     SysBusDevice parent_obj;
     SWIMCtrl     ctrl;
-} Swim;
+};
 #endif
diff --git a/include/hw/boards.h b/include/hw/boards.h
index bc5b82ad20..795910d01b 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -21,12 +21,8 @@
 
 #define TYPE_MACHINE "machine"
 #undef MACHINE  /* BSD defines it and QEMU does not use it */
-#define MACHINE(obj) \
-    OBJECT_CHECK(MachineState, (obj), TYPE_MACHINE)
-#define MACHINE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(MachineClass, (obj), TYPE_MACHINE)
-#define MACHINE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(MachineClass, (klass), TYPE_MACHINE)
+DECLARE_OBJ_CHECKERS(MachineState, MachineClass,
+                     MACHINE, TYPE_MACHINE)
 
 extern MachineState *current_machine;
 
diff --git a/include/hw/char/avr_usart.h b/include/hw/char/avr_usart.h
index 5739aaf26f..5202f152b0 100644
--- a/include/hw/char/avr_usart.h
+++ b/include/hw/char/avr_usart.h
@@ -25,6 +25,7 @@
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
 #include "hw/hw.h"
+#include "qom/object.h"
 
 /* Offsets of registers. */
 #define USART_DR   0x06
@@ -57,10 +58,11 @@
 #define USART_CSRC_CSZ0   (1 << 1)
 
 #define TYPE_AVR_USART "avr-usart"
-#define AVR_USART(obj) \
-    OBJECT_CHECK(AVRUsartState, (obj), TYPE_AVR_USART)
+typedef struct AVRUsartState AVRUsartState;
+DECLARE_INSTANCE_CHECKER(AVRUsartState, AVR_USART,
+                         TYPE_AVR_USART)
 
-typedef struct {
+struct AVRUsartState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -88,6 +90,6 @@ typedef struct {
     qemu_irq txc_irq;
     /* Data Register Empty */
     qemu_irq dre_irq;
-} AVRUsartState;
+};
 
 #endif /* HW_CHAR_AVR_USART_H */
diff --git a/include/hw/char/bcm2835_aux.h b/include/hw/char/bcm2835_aux.h
index 934acf9c81..a08795c47f 100644
--- a/include/hw/char/bcm2835_aux.h
+++ b/include/hw/char/bcm2835_aux.h
@@ -11,13 +11,16 @@
 
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_AUX "bcm2835-aux"
-#define BCM2835_AUX(obj) OBJECT_CHECK(BCM2835AuxState, (obj), TYPE_BCM2835_AUX)
+typedef struct BCM2835AuxState BCM2835AuxState;
+DECLARE_INSTANCE_CHECKER(BCM2835AuxState, BCM2835_AUX,
+                         TYPE_BCM2835_AUX)
 
 #define BCM2835_AUX_RX_FIFO_LEN 8
 
-typedef struct {
+struct BCM2835AuxState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -29,6 +32,6 @@ typedef struct {
     uint8_t read_fifo[BCM2835_AUX_RX_FIFO_LEN];
     uint8_t read_pos, read_count;
     uint8_t ier, iir;
-} BCM2835AuxState;
+};
 
 #endif
diff --git a/include/hw/char/cadence_uart.h b/include/hw/char/cadence_uart.h
index dabc49ea4f..1734f53541 100644
--- a/include/hw/char/cadence_uart.h
+++ b/include/hw/char/cadence_uart.h
@@ -24,6 +24,7 @@
 #include "chardev/char-fe.h"
 #include "qapi/error.h"
 #include "qemu/timer.h"
+#include "qom/object.h"
 
 #define CADENCE_UART_RX_FIFO_SIZE           16
 #define CADENCE_UART_TX_FIFO_SIZE           16
@@ -31,10 +32,11 @@
 #define CADENCE_UART_R_MAX (0x48/4)
 
 #define TYPE_CADENCE_UART "cadence_uart"
-#define CADENCE_UART(obj) OBJECT_CHECK(CadenceUARTState, (obj), \
-                                       TYPE_CADENCE_UART)
+typedef struct CadenceUARTState CadenceUARTState;
+DECLARE_INSTANCE_CHECKER(CadenceUARTState, CADENCE_UART,
+                         TYPE_CADENCE_UART)
 
-typedef struct {
+struct CadenceUARTState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -51,6 +53,6 @@ typedef struct {
     qemu_irq irq;
     QEMUTimer *fifo_trigger_handle;
     Clock *refclk;
-} CadenceUARTState;
+};
 
 #endif
diff --git a/include/hw/char/cmsdk-apb-uart.h b/include/hw/char/cmsdk-apb-uart.h
index bc9069f9fd..2c3869aa16 100644
--- a/include/hw/char/cmsdk-apb-uart.h
+++ b/include/hw/char/cmsdk-apb-uart.h
@@ -15,12 +15,14 @@
 #include "hw/qdev-properties.h"
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
+#include "qom/object.h"
 
 #define TYPE_CMSDK_APB_UART "cmsdk-apb-uart"
-#define CMSDK_APB_UART(obj) OBJECT_CHECK(CMSDKAPBUART, (obj), \
-                                         TYPE_CMSDK_APB_UART)
+typedef struct CMSDKAPBUART CMSDKAPBUART;
+DECLARE_INSTANCE_CHECKER(CMSDKAPBUART, CMSDK_APB_UART,
+                         TYPE_CMSDK_APB_UART)
 
-typedef struct {
+struct CMSDKAPBUART {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -42,7 +44,7 @@ typedef struct {
     /* This UART has no FIFO, only a 1-character buffer for each of Tx and Rx */
     uint8_t txbuf;
     uint8_t rxbuf;
-} CMSDKAPBUART;
+};
 
 /**
  * cmsdk_apb_uart_create - convenience function to create TYPE_CMSDK_APB_UART
diff --git a/include/hw/char/digic-uart.h b/include/hw/char/digic-uart.h
index de9a3e3551..01d406833d 100644
--- a/include/hw/char/digic-uart.h
+++ b/include/hw/char/digic-uart.h
@@ -20,10 +20,12 @@
 
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
+#include "qom/object.h"
 
 #define TYPE_DIGIC_UART "digic-uart"
-#define DIGIC_UART(obj) \
-    OBJECT_CHECK(DigicUartState, (obj), TYPE_DIGIC_UART)
+typedef struct DigicUartState DigicUartState;
+DECLARE_INSTANCE_CHECKER(DigicUartState, DIGIC_UART,
+                         TYPE_DIGIC_UART)
 
 enum {
     R_TX = 0x00,
@@ -32,7 +34,7 @@ enum {
     R_MAX
 };
 
-typedef struct DigicUartState {
+struct DigicUartState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -42,6 +44,6 @@ typedef struct DigicUartState {
 
     uint32_t reg_rx;
     uint32_t reg_st;
-} DigicUartState;
+};
 
 #endif /* HW_CHAR_DIGIC_UART_H */
diff --git a/include/hw/char/escc.h b/include/hw/char/escc.h
index 794b653484..5eaec507da 100644
--- a/include/hw/char/escc.h
+++ b/include/hw/char/escc.h
@@ -5,12 +5,15 @@
 #include "chardev/char-serial.h"
 #include "hw/sysbus.h"
 #include "ui/input.h"
+#include "qom/object.h"
 
 /* escc.c */
 #define TYPE_ESCC "escc"
 #define ESCC_SIZE 4
 
-#define ESCC(obj) OBJECT_CHECK(ESCCState, (obj), TYPE_ESCC)
+typedef struct ESCCState ESCCState;
+DECLARE_INSTANCE_CHECKER(ESCCState, ESCC,
+                         TYPE_ESCC)
 
 typedef enum {
     escc_chn_a, escc_chn_b,
@@ -46,7 +49,7 @@ typedef struct ESCCChannelState {
     QemuInputHandlerState *hs;
 } ESCCChannelState;
 
-typedef struct ESCCState {
+struct ESCCState {
     SysBusDevice parent_obj;
 
     struct ESCCChannelState chn[2];
@@ -55,6 +58,6 @@ typedef struct ESCCState {
     MemoryRegion mmio;
     uint32_t disabled;
     uint32_t frequency;
-} ESCCState;
+};
 
 #endif
diff --git a/include/hw/char/ibex_uart.h b/include/hw/char/ibex_uart.h
index b6bd5a6700..36eb75fc4c 100644
--- a/include/hw/char/ibex_uart.h
+++ b/include/hw/char/ibex_uart.h
@@ -29,6 +29,7 @@
 #include "hw/registerfields.h"
 #include "chardev/char-fe.h"
 #include "qemu/timer.h"
+#include "qom/object.h"
 
 REG32(INTR_STATE, 0x00)
     FIELD(INTR_STATE, TX_WATERMARK, 0, 1)
@@ -69,10 +70,11 @@ REG32(TIMEOUT_CTRL, 0x2c)
 #define IBEX_UART_CLOCK 50000000 /* 50MHz clock */
 
 #define TYPE_IBEX_UART "ibex-uart"
-#define IBEX_UART(obj) \
-    OBJECT_CHECK(IbexUartState, (obj), TYPE_IBEX_UART)
+typedef struct IbexUartState IbexUartState;
+DECLARE_INSTANCE_CHECKER(IbexUartState, IBEX_UART,
+                         TYPE_IBEX_UART)
 
-typedef struct {
+struct IbexUartState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -103,5 +105,5 @@ typedef struct {
     qemu_irq rx_watermark;
     qemu_irq tx_empty;
     qemu_irq rx_overflow;
-} IbexUartState;
+};
 #endif /* HW_IBEX_UART_H */
diff --git a/include/hw/char/imx_serial.h b/include/hw/char/imx_serial.h
index c8b74284f8..200f1ec33a 100644
--- a/include/hw/char/imx_serial.h
+++ b/include/hw/char/imx_serial.h
@@ -20,9 +20,12 @@
 
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
+#include "qom/object.h"
 
 #define TYPE_IMX_SERIAL "imx.serial"
-#define IMX_SERIAL(obj) OBJECT_CHECK(IMXSerialState, (obj), TYPE_IMX_SERIAL)
+typedef struct IMXSerialState IMXSerialState;
+DECLARE_INSTANCE_CHECKER(IMXSerialState, IMX_SERIAL,
+                         TYPE_IMX_SERIAL)
 
 #define URXD_CHARRDY    (1<<15)   /* character read is valid */
 #define URXD_ERR        (1<<14)   /* Character has error */
@@ -76,7 +79,7 @@
 #define UTS1_TXFULL     (1<<4)
 #define UTS1_RXFULL     (1<<3)
 
-typedef struct IMXSerialState {
+struct IMXSerialState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -103,6 +106,6 @@ typedef struct IMXSerialState {
 
     qemu_irq irq;
     CharBackend chr;
-} IMXSerialState;
+};
 
 #endif
diff --git a/include/hw/char/nrf51_uart.h b/include/hw/char/nrf51_uart.h
index eb1c15b490..0cf3c4e328 100644
--- a/include/hw/char/nrf51_uart.h
+++ b/include/hw/char/nrf51_uart.h
@@ -14,12 +14,15 @@
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
 #include "hw/registerfields.h"
+#include "qom/object.h"
 
 #define UART_FIFO_LENGTH 6
 #define UART_SIZE 0x1000
 
 #define TYPE_NRF51_UART "nrf51_soc.uart"
-#define NRF51_UART(obj) OBJECT_CHECK(NRF51UARTState, (obj), TYPE_NRF51_UART)
+typedef struct NRF51UARTState NRF51UARTState;
+DECLARE_INSTANCE_CHECKER(NRF51UARTState, NRF51_UART,
+                         TYPE_NRF51_UART)
 
 REG32(UART_STARTRX, 0x000)
 REG32(UART_STOPRX, 0x004)
@@ -54,7 +57,7 @@ REG32(UART_TXD, 0x51C)
 REG32(UART_BAUDRATE, 0x524)
 REG32(UART_CONFIG, 0x56C)
 
-typedef struct NRF51UARTState {
+struct NRF51UARTState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -72,6 +75,6 @@ typedef struct NRF51UARTState {
     bool tx_started;
     bool pending_tx_byte;
     bool enabled;
-} NRF51UARTState;
+};
 
 #endif
diff --git a/include/hw/char/pl011.h b/include/hw/char/pl011.h
index bed758350f..80de4ecde6 100644
--- a/include/hw/char/pl011.h
+++ b/include/hw/char/pl011.h
@@ -19,14 +19,17 @@
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
 #include "qapi/error.h"
+#include "qom/object.h"
 
 #define TYPE_PL011 "pl011"
-#define PL011(obj) OBJECT_CHECK(PL011State, (obj), TYPE_PL011)
+typedef struct PL011State PL011State;
+DECLARE_INSTANCE_CHECKER(PL011State, PL011,
+                         TYPE_PL011)
 
 /* This shares the same struct (and cast macro) as the base pl011 device */
 #define TYPE_PL011_LUMINARY "pl011_luminary"
 
-typedef struct PL011State {
+struct PL011State {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -49,7 +52,7 @@ typedef struct PL011State {
     CharBackend chr;
     qemu_irq irq[6];
     const unsigned char *id;
-} PL011State;
+};
 
 static inline DeviceState *pl011_create(hwaddr addr,
                                         qemu_irq irq,
diff --git a/include/hw/char/renesas_sci.h b/include/hw/char/renesas_sci.h
index efdebc620a..a4764e3eee 100644
--- a/include/hw/char/renesas_sci.h
+++ b/include/hw/char/renesas_sci.h
@@ -11,9 +11,12 @@
 
 #include "chardev/char-fe.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_RENESAS_SCI "renesas-sci"
-#define RSCI(obj) OBJECT_CHECK(RSCIState, (obj), TYPE_RENESAS_SCI)
+typedef struct RSCIState RSCIState;
+DECLARE_INSTANCE_CHECKER(RSCIState, RSCI,
+                         TYPE_RENESAS_SCI)
 
 enum {
     ERI = 0,
@@ -23,7 +26,7 @@ enum {
     SCI_NR_IRQ = 4
 };
 
-typedef struct {
+struct RSCIState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -46,6 +49,6 @@ typedef struct {
     int64_t trtime;
     int64_t rx_next;
     uint64_t input_freq;
-} RSCIState;
+};
 
 #endif
diff --git a/include/hw/char/serial.h b/include/hw/char/serial.h
index 535fa23a2b..264f529a7f 100644
--- a/include/hw/char/serial.h
+++ b/include/hw/char/serial.h
@@ -31,10 +31,11 @@
 #include "qemu/fifo8.h"
 #include "chardev/char.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define UART_FIFO_LENGTH    16      /* 16550A Fifo Length */
 
-typedef struct SerialState {
+struct SerialState {
     DeviceState parent;
 
     uint16_t divider;
@@ -77,22 +78,25 @@ typedef struct SerialState {
 
     QEMUTimer *modem_status_poll;
     MemoryRegion io;
-} SerialState;
+};
+typedef struct SerialState SerialState;
 
-typedef struct SerialMM {
+struct SerialMM {
     SysBusDevice parent;
 
     SerialState serial;
 
     uint8_t regshift;
     uint8_t endianness;
-} SerialMM;
+};
+typedef struct SerialMM SerialMM;
 
-typedef struct SerialIO {
+struct SerialIO {
     SysBusDevice parent;
 
     SerialState serial;
-} SerialIO;
+};
+typedef struct SerialIO SerialIO;
 
 extern const VMStateDescription vmstate_serial;
 extern const MemoryRegionOps serial_io_ops;
@@ -100,13 +104,16 @@ extern const MemoryRegionOps serial_io_ops;
 void serial_set_frequency(SerialState *s, uint32_t frequency);
 
 #define TYPE_SERIAL "serial"
-#define SERIAL(s) OBJECT_CHECK(SerialState, (s), TYPE_SERIAL)
+DECLARE_INSTANCE_CHECKER(SerialState, SERIAL,
+                         TYPE_SERIAL)
 
 #define TYPE_SERIAL_MM "serial-mm"
-#define SERIAL_MM(s) OBJECT_CHECK(SerialMM, (s), TYPE_SERIAL_MM)
+DECLARE_INSTANCE_CHECKER(SerialMM, SERIAL_MM,
+                         TYPE_SERIAL_MM)
 
 #define TYPE_SERIAL_IO "serial-io"
-#define SERIAL_IO(s) OBJECT_CHECK(SerialIO, (s), TYPE_SERIAL_IO)
+DECLARE_INSTANCE_CHECKER(SerialIO, SERIAL_IO,
+                         TYPE_SERIAL_IO)
 
 SerialMM *serial_mm_init(MemoryRegion *address_space,
                          hwaddr base, int regshift,
diff --git a/include/hw/char/stm32f2xx_usart.h b/include/hw/char/stm32f2xx_usart.h
index 8e112671e3..1670c076d4 100644
--- a/include/hw/char/stm32f2xx_usart.h
+++ b/include/hw/char/stm32f2xx_usart.h
@@ -27,6 +27,7 @@
 
 #include "hw/sysbus.h"
 #include "chardev/char-fe.h"
+#include "qom/object.h"
 
 #define USART_SR   0x00
 #define USART_DR   0x04
@@ -53,10 +54,11 @@
 #define USART_CR1_RE  (1 << 2)
 
 #define TYPE_STM32F2XX_USART "stm32f2xx-usart"
-#define STM32F2XX_USART(obj) \
-    OBJECT_CHECK(STM32F2XXUsartState, (obj), TYPE_STM32F2XX_USART)
+typedef struct STM32F2XXUsartState STM32F2XXUsartState;
+DECLARE_INSTANCE_CHECKER(STM32F2XXUsartState, STM32F2XX_USART,
+                         TYPE_STM32F2XX_USART)
 
-typedef struct {
+struct STM32F2XXUsartState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -73,5 +75,5 @@ typedef struct {
 
     CharBackend chr;
     qemu_irq irq;
-} STM32F2XXUsartState;
+};
 #endif /* HW_STM32F2XX_USART_H */
diff --git a/include/hw/clock.h b/include/hw/clock.h
index 9ecd78b2c3..b524509b47 100644
--- a/include/hw/clock.h
+++ b/include/hw/clock.h
@@ -18,7 +18,9 @@
 #include "qemu/queue.h"
 
 #define TYPE_CLOCK "clock"
-#define CLOCK(obj) OBJECT_CHECK(Clock, (obj), TYPE_CLOCK)
+typedef struct Clock Clock;
+DECLARE_INSTANCE_CHECKER(Clock, CLOCK,
+                         TYPE_CLOCK)
 
 typedef void ClockCallback(void *opaque);
 
@@ -54,7 +56,6 @@ typedef void ClockCallback(void *opaque);
  * @sibling: structure used to form a clock list
  */
 
-typedef struct Clock Clock;
 
 struct Clock {
     /*< private >*/
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 9fc2696db5..99dc33ffeb 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -30,6 +30,7 @@
 #include "qemu/queue.h"
 #include "qemu/thread.h"
 #include "qemu/plugin.h"
+#include "qom/object.h"
 
 typedef int (*WriteCoreDumpFunction)(const void *buf, size_t size,
                                      void *opaque);
@@ -61,8 +62,9 @@ typedef uint64_t vaddr;
  */
 #define CPU(obj) ((CPUState *)(obj))
 
-#define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU)
-#define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU)
+typedef struct CPUClass CPUClass;
+DECLARE_CLASS_CHECKERS(CPUClass, CPU,
+                       TYPE_CPU)
 
 typedef enum MMUAccessType {
     MMU_DATA_LOAD  = 0,
@@ -156,7 +158,7 @@ struct TranslationBlock;
  *
  * Represents a CPU family or model.
  */
-typedef struct CPUClass {
+struct CPUClass {
     /*< private >*/
     DeviceClass parent_class;
     /*< public >*/
@@ -222,7 +224,7 @@ typedef struct CPUClass {
     /* Keep non-pointer data at the end to minimize holes.  */
     int gdb_num_core_regs;
     bool gdb_stop_before_watchpoint;
-} CPUClass;
+};
 
 /*
  * Low 16 bits: number of cycles left, used only in icount mode.
diff --git a/include/hw/core/generic-loader.h b/include/hw/core/generic-loader.h
index 9ffce1c5a3..8e86532df6 100644
--- a/include/hw/core/generic-loader.h
+++ b/include/hw/core/generic-loader.h
@@ -20,8 +20,9 @@
 
 #include "elf.h"
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
-typedef struct GenericLoaderState {
+struct GenericLoaderState {
     /* <private> */
     DeviceState parent_obj;
 
@@ -38,10 +39,11 @@ typedef struct GenericLoaderState {
     bool force_raw;
     bool data_be;
     bool set_pc;
-} GenericLoaderState;
+};
+typedef struct GenericLoaderState GenericLoaderState;
 
 #define TYPE_GENERIC_LOADER "loader"
-#define GENERIC_LOADER(obj) OBJECT_CHECK(GenericLoaderState, (obj), \
-                                         TYPE_GENERIC_LOADER)
+DECLARE_INSTANCE_CHECKER(GenericLoaderState, GENERIC_LOADER,
+                         TYPE_GENERIC_LOADER)
 
 #endif
diff --git a/include/hw/core/split-irq.h b/include/hw/core/split-irq.h
index 872a39aa4f..76d42b29aa 100644
--- a/include/hw/core/split-irq.h
+++ b/include/hw/core/split-irq.h
@@ -44,7 +44,8 @@
 
 typedef struct SplitIRQ SplitIRQ;
 
-#define SPLIT_IRQ(obj) OBJECT_CHECK(SplitIRQ, (obj), TYPE_SPLIT_IRQ)
+DECLARE_INSTANCE_CHECKER(SplitIRQ, SPLIT_IRQ,
+                         TYPE_SPLIT_IRQ)
 
 struct SplitIRQ {
     DeviceState parent_obj;
diff --git a/include/hw/cpu/a15mpcore.h b/include/hw/cpu/a15mpcore.h
index b423533d20..58d8ac7415 100644
--- a/include/hw/cpu/a15mpcore.h
+++ b/include/hw/cpu/a15mpcore.h
@@ -22,14 +22,16 @@
 
 #include "hw/sysbus.h"
 #include "hw/intc/arm_gic.h"
+#include "qom/object.h"
 
 /* A15MP private memory region.  */
 
 #define TYPE_A15MPCORE_PRIV "a15mpcore_priv"
-#define A15MPCORE_PRIV(obj) \
-    OBJECT_CHECK(A15MPPrivState, (obj), TYPE_A15MPCORE_PRIV)
+typedef struct A15MPPrivState A15MPPrivState;
+DECLARE_INSTANCE_CHECKER(A15MPPrivState, A15MPCORE_PRIV,
+                         TYPE_A15MPCORE_PRIV)
 
-typedef struct A15MPPrivState {
+struct A15MPPrivState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -39,6 +41,6 @@ typedef struct A15MPPrivState {
     MemoryRegion container;
 
     GICState gic;
-} A15MPPrivState;
+};
 
 #endif
diff --git a/include/hw/cpu/a9mpcore.h b/include/hw/cpu/a9mpcore.h
index 5d67ca22c4..37e5cfce08 100644
--- a/include/hw/cpu/a9mpcore.h
+++ b/include/hw/cpu/a9mpcore.h
@@ -15,12 +15,14 @@
 #include "hw/misc/a9scu.h"
 #include "hw/timer/arm_mptimer.h"
 #include "hw/timer/a9gtimer.h"
+#include "qom/object.h"
 
 #define TYPE_A9MPCORE_PRIV "a9mpcore_priv"
-#define A9MPCORE_PRIV(obj) \
-    OBJECT_CHECK(A9MPPrivState, (obj), TYPE_A9MPCORE_PRIV)
+typedef struct A9MPPrivState A9MPPrivState;
+DECLARE_INSTANCE_CHECKER(A9MPPrivState, A9MPCORE_PRIV,
+                         TYPE_A9MPCORE_PRIV)
 
-typedef struct A9MPPrivState {
+struct A9MPPrivState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -34,6 +36,6 @@ typedef struct A9MPPrivState {
     A9GTimerState gtimer;
     ARMMPTimerState mptimer;
     ARMMPTimerState wdt;
-} A9MPPrivState;
+};
 
 #endif
diff --git a/include/hw/cpu/arm11mpcore.h b/include/hw/cpu/arm11mpcore.h
index 6196109ca2..411d7e6659 100644
--- a/include/hw/cpu/arm11mpcore.h
+++ b/include/hw/cpu/arm11mpcore.h
@@ -14,12 +14,14 @@
 #include "hw/misc/arm11scu.h"
 #include "hw/intc/arm_gic.h"
 #include "hw/timer/arm_mptimer.h"
+#include "qom/object.h"
 
 #define TYPE_ARM11MPCORE_PRIV "arm11mpcore_priv"
-#define ARM11MPCORE_PRIV(obj) \
-    OBJECT_CHECK(ARM11MPCorePriveState, (obj), TYPE_ARM11MPCORE_PRIV)
+typedef struct ARM11MPCorePriveState ARM11MPCorePriveState;
+DECLARE_INSTANCE_CHECKER(ARM11MPCorePriveState, ARM11MPCORE_PRIV,
+                         TYPE_ARM11MPCORE_PRIV)
 
-typedef struct ARM11MPCorePriveState {
+struct ARM11MPCorePriveState {
     SysBusDevice parent_obj;
 
     uint32_t num_cpu;
@@ -30,6 +32,6 @@ typedef struct ARM11MPCorePriveState {
     GICState gic;
     ARMMPTimerState mptimer;
     ARMMPTimerState wdtimer;
-} ARM11MPCorePriveState;
+};
 
 #endif
diff --git a/include/hw/cpu/cluster.h b/include/hw/cpu/cluster.h
index a616501a55..1c807c5902 100644
--- a/include/hw/cpu/cluster.h
+++ b/include/hw/cpu/cluster.h
@@ -21,6 +21,7 @@
 #define HW_CPU_CLUSTER_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 /*
  * CPU Cluster type
@@ -54,8 +55,9 @@
  */
 
 #define TYPE_CPU_CLUSTER "cpu-cluster"
-#define CPU_CLUSTER(obj) \
-    OBJECT_CHECK(CPUClusterState, (obj), TYPE_CPU_CLUSTER)
+typedef struct CPUClusterState CPUClusterState;
+DECLARE_INSTANCE_CHECKER(CPUClusterState, CPU_CLUSTER,
+                         TYPE_CPU_CLUSTER)
 
 /*
  * This limit is imposed by TCG, which puts the cluster ID into an
@@ -70,12 +72,12 @@
  *
  * State of a CPU cluster.
  */
-typedef struct CPUClusterState {
+struct CPUClusterState {
     /*< private >*/
     DeviceState parent_obj;
 
     /*< public >*/
     uint32_t cluster_id;
-} CPUClusterState;
+};
 
 #endif
diff --git a/include/hw/cpu/core.h b/include/hw/cpu/core.h
index 555ad831bb..61ea3481f8 100644
--- a/include/hw/cpu/core.h
+++ b/include/hw/cpu/core.h
@@ -10,20 +10,22 @@
 #define HW_CPU_CORE_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define TYPE_CPU_CORE "cpu-core"
 
-#define CPU_CORE(obj) \
-    OBJECT_CHECK(CPUCore, (obj), TYPE_CPU_CORE)
+typedef struct CPUCore CPUCore;
+DECLARE_INSTANCE_CHECKER(CPUCore, CPU_CORE,
+                         TYPE_CPU_CORE)
 
-typedef struct CPUCore {
+struct CPUCore {
     /*< private >*/
     DeviceState parent_obj;
 
     /*< public >*/
     int core_id;
     int nr_threads;
-} CPUCore;
+};
 
 /* Note: topology field names need to be kept in sync with
  * 'CpuInstanceProperties' */
diff --git a/include/hw/display/bcm2835_fb.h b/include/hw/display/bcm2835_fb.h
index 2246be74d8..226d77a264 100644
--- a/include/hw/display/bcm2835_fb.h
+++ b/include/hw/display/bcm2835_fb.h
@@ -14,9 +14,12 @@
 
 #include "hw/sysbus.h"
 #include "ui/console.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_FB "bcm2835-fb"
-#define BCM2835_FB(obj) OBJECT_CHECK(BCM2835FBState, (obj), TYPE_BCM2835_FB)
+typedef struct BCM2835FBState BCM2835FBState;
+DECLARE_INSTANCE_CHECKER(BCM2835FBState, BCM2835_FB,
+                         TYPE_BCM2835_FB)
 
 /*
  * Configuration information about the fb which the guest can program
@@ -32,7 +35,7 @@ typedef struct {
     uint32_t alpha;
 } BCM2835FBConfig;
 
-typedef struct {
+struct BCM2835FBState {
     /*< private >*/
     SysBusDevice busdev;
     /*< public >*/
@@ -49,7 +52,7 @@ typedef struct {
 
     BCM2835FBConfig config;
     BCM2835FBConfig initial_config;
-} BCM2835FBState;
+};
 
 void bcm2835_fb_reconfigure(BCM2835FBState *s, BCM2835FBConfig *newconfig);
 
diff --git a/include/hw/display/dpcd.h b/include/hw/display/dpcd.h
index 6880ee36a3..09304dd1f6 100644
--- a/include/hw/display/dpcd.h
+++ b/include/hw/display/dpcd.h
@@ -24,11 +24,13 @@
 
 #ifndef DPCD_H
 #define DPCD_H
+#include "qom/object.h"
 
 typedef struct DPCDState DPCDState;
 
 #define TYPE_DPCD "dpcd"
-#define DPCD(obj) OBJECT_CHECK(DPCDState, (obj), TYPE_DPCD)
+DECLARE_INSTANCE_CHECKER(DPCDState, DPCD,
+                         TYPE_DPCD)
 
 /* DCPD Revision. */
 #define DPCD_REVISION                           0x00
diff --git a/include/hw/display/i2c-ddc.h b/include/hw/display/i2c-ddc.h
index 1cf53a0c8d..fbabfea5a9 100644
--- a/include/hw/display/i2c-ddc.h
+++ b/include/hw/display/i2c-ddc.h
@@ -21,6 +21,7 @@
 
 #include "hw/display/edid.h"
 #include "hw/i2c/i2c.h"
+#include "qom/object.h"
 
 /* A simple I2C slave which just returns the contents of its EDID blob. */
 struct I2CDDCState {
@@ -36,6 +37,7 @@ struct I2CDDCState {
 typedef struct I2CDDCState I2CDDCState;
 
 #define TYPE_I2CDDC "i2c-ddc"
-#define I2CDDC(obj) OBJECT_CHECK(I2CDDCState, (obj), TYPE_I2CDDC)
+DECLARE_INSTANCE_CHECKER(I2CDDCState, I2CDDC,
+                         TYPE_I2CDDC)
 
 #endif /* I2C_DDC_H */
diff --git a/include/hw/display/macfb.h b/include/hw/display/macfb.h
index 347871b623..0960480b75 100644
--- a/include/hw/display/macfb.h
+++ b/include/hw/display/macfb.h
@@ -16,6 +16,7 @@
 #include "qemu/osdep.h"
 #include "exec/memory.h"
 #include "ui/console.h"
+#include "qom/object.h"
 
 typedef struct MacfbState {
     MemoryRegion mem_vram;
@@ -31,34 +32,33 @@ typedef struct MacfbState {
 } MacfbState;
 
 #define TYPE_MACFB "sysbus-macfb"
-#define MACFB(obj) \
-    OBJECT_CHECK(MacfbSysBusState, (obj), TYPE_MACFB)
+typedef struct MacfbSysBusState MacfbSysBusState;
+DECLARE_INSTANCE_CHECKER(MacfbSysBusState, MACFB,
+                         TYPE_MACFB)
 
-typedef struct {
+struct MacfbSysBusState {
     SysBusDevice busdev;
 
     MacfbState macfb;
-} MacfbSysBusState;
+};
 
-#define NUBUS_MACFB_CLASS(class) \
-    OBJECT_CLASS_CHECK(MacfbNubusDeviceClass, (class), TYPE_NUBUS_MACFB)
-#define NUBUS_MACFB_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(MacfbNubusDeviceClass, (obj), TYPE_NUBUS_MACFB)
+#define TYPE_NUBUS_MACFB "nubus-macfb"
+typedef struct MacfbNubusDeviceClass MacfbNubusDeviceClass;
+typedef struct MacfbNubusState MacfbNubusState;
+DECLARE_OBJ_CHECKERS(MacfbNubusState, MacfbNubusDeviceClass,
+                     NUBUS_MACFB, TYPE_NUBUS_MACFB)
 
-typedef struct MacfbNubusDeviceClass {
+struct MacfbNubusDeviceClass {
     DeviceClass parent_class;
 
     DeviceRealize parent_realize;
-} MacfbNubusDeviceClass;
+};
 
-#define TYPE_NUBUS_MACFB "nubus-macfb"
-#define NUBUS_MACFB(obj) \
-    OBJECT_CHECK(MacfbNubusState, (obj), TYPE_NUBUS_MACFB)
 
-typedef struct {
+struct MacfbNubusState {
     NubusDevice busdev;
 
     MacfbState macfb;
-} MacfbNubusState;
+};
 
 #endif
diff --git a/include/hw/display/xlnx_dp.h b/include/hw/display/xlnx_dp.h
index ab0dd250cc..3b7d9e5a2a 100644
--- a/include/hw/display/xlnx_dp.h
+++ b/include/hw/display/xlnx_dp.h
@@ -34,6 +34,7 @@
 #include "qemu/units.h"
 #include "hw/dma/xlnx_dpdma.h"
 #include "audio/audio.h"
+#include "qom/object.h"
 
 #define AUD_CHBUF_MAX_DEPTH                 (32 * KiB)
 #define MAX_QEMU_BUFFER_SIZE                (4 * KiB)
@@ -48,7 +49,7 @@ struct PixmanPlane {
     DisplaySurface *surface;
 };
 
-typedef struct XlnxDPState {
+struct XlnxDPState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -101,9 +102,11 @@ typedef struct XlnxDPState {
      */
     DPCDState *dpcd;
     I2CDDCState *edid;
-} XlnxDPState;
+};
+typedef struct XlnxDPState XlnxDPState;
 
 #define TYPE_XLNX_DP "xlnx.v-dp"
-#define XLNX_DP(obj) OBJECT_CHECK(XlnxDPState, (obj), TYPE_XLNX_DP)
+DECLARE_INSTANCE_CHECKER(XlnxDPState, XLNX_DP,
+                         TYPE_XLNX_DP)
 
 #endif
diff --git a/include/hw/dma/bcm2835_dma.h b/include/hw/dma/bcm2835_dma.h
index a6747842b7..b94dae779a 100644
--- a/include/hw/dma/bcm2835_dma.h
+++ b/include/hw/dma/bcm2835_dma.h
@@ -9,6 +9,7 @@
 #define BCM2835_DMA_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 typedef struct {
     uint32_t cs;
@@ -25,12 +26,13 @@ typedef struct {
 } BCM2835DMAChan;
 
 #define TYPE_BCM2835_DMA "bcm2835-dma"
-#define BCM2835_DMA(obj) \
-        OBJECT_CHECK(BCM2835DMAState, (obj), TYPE_BCM2835_DMA)
+typedef struct BCM2835DMAState BCM2835DMAState;
+DECLARE_INSTANCE_CHECKER(BCM2835DMAState, BCM2835_DMA,
+                         TYPE_BCM2835_DMA)
 
 #define BCM2835_DMA_NCHANS 16
 
-typedef struct {
+struct BCM2835DMAState {
     /*< private >*/
     SysBusDevice busdev;
     /*< public >*/
@@ -42,6 +44,6 @@ typedef struct {
     BCM2835DMAChan chan[BCM2835_DMA_NCHANS];
     uint32_t int_status;
     uint32_t enable;
-} BCM2835DMAState;
+};
 
 #endif
diff --git a/include/hw/dma/i8257.h b/include/hw/dma/i8257.h
index ee06371699..362ce7b8dc 100644
--- a/include/hw/dma/i8257.h
+++ b/include/hw/dma/i8257.h
@@ -3,10 +3,12 @@
 
 #include "hw/isa/isa.h"
 #include "exec/ioport.h"
+#include "qom/object.h"
 
 #define TYPE_I8257 "i8257"
-#define I8257(obj) \
-    OBJECT_CHECK(I8257State, (obj), TYPE_I8257)
+typedef struct I8257State I8257State;
+DECLARE_INSTANCE_CHECKER(I8257State, I8257,
+                         TYPE_I8257)
 
 typedef struct I8257Regs {
     int now[2];
@@ -20,7 +22,7 @@ typedef struct I8257Regs {
     void *opaque;
 } I8257Regs;
 
-typedef struct I8257State {
+struct I8257State {
     /* <private> */
     ISADevice parent_obj;
 
@@ -43,7 +45,7 @@ typedef struct I8257State {
     int running;
     PortioList portio_page;
     PortioList portio_pageh;
-} I8257State;
+};
 
 void i8257_dma_init(ISABus *bus, bool high_page_enable);
 
diff --git a/include/hw/dma/pl080.h b/include/hw/dma/pl080.h
index 9d4b3df143..e9669bf5ae 100644
--- a/include/hw/dma/pl080.h
+++ b/include/hw/dma/pl080.h
@@ -29,6 +29,7 @@
 #define HW_DMA_PL080_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define PL080_MAX_CHANNELS 8
 
@@ -42,9 +43,11 @@ typedef struct {
 
 #define TYPE_PL080 "pl080"
 #define TYPE_PL081 "pl081"
-#define PL080(obj) OBJECT_CHECK(PL080State, (obj), TYPE_PL080)
+typedef struct PL080State PL080State;
+DECLARE_INSTANCE_CHECKER(PL080State, PL080,
+                         TYPE_PL080)
 
-typedef struct PL080State {
+struct PL080State {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -66,6 +69,6 @@ typedef struct PL080State {
 
     MemoryRegion *downstream;
     AddressSpace downstream_as;
-} PL080State;
+};
 
 #endif
diff --git a/include/hw/dma/xlnx-zdma.h b/include/hw/dma/xlnx-zdma.h
index 0b240b4c3c..f638abe568 100644
--- a/include/hw/dma/xlnx-zdma.h
+++ b/include/hw/dma/xlnx-zdma.h
@@ -32,6 +32,7 @@
 #include "hw/sysbus.h"
 #include "hw/register.h"
 #include "sysemu/dma.h"
+#include "qom/object.h"
 
 #define ZDMA_R_MAX (0x204 / 4)
 
@@ -50,7 +51,7 @@ typedef union {
     uint32_t words[4];
 } XlnxZDMADescr;
 
-typedef struct XlnxZDMA {
+struct XlnxZDMA {
     SysBusDevice parent_obj;
     MemoryRegion iomem;
     MemTxAttrs attr;
@@ -74,11 +75,12 @@ typedef struct XlnxZDMA {
     /* We don't model the common bufs. Must be at least 16 bytes
        to model write only mode.  */
     uint8_t buf[2048];
-} XlnxZDMA;
+};
+typedef struct XlnxZDMA XlnxZDMA;
 
 #define TYPE_XLNX_ZDMA "xlnx.zdma"
 
-#define XLNX_ZDMA(obj) \
-     OBJECT_CHECK(XlnxZDMA, (obj), TYPE_XLNX_ZDMA)
+DECLARE_INSTANCE_CHECKER(XlnxZDMA, XLNX_ZDMA,
+                         TYPE_XLNX_ZDMA)
 
 #endif /* XLNX_ZDMA_H */
diff --git a/include/hw/dma/xlnx-zynq-devcfg.h b/include/hw/dma/xlnx-zynq-devcfg.h
index 1d3969d91f..e16b08f9c5 100644
--- a/include/hw/dma/xlnx-zynq-devcfg.h
+++ b/include/hw/dma/xlnx-zynq-devcfg.h
@@ -29,11 +29,13 @@
 
 #include "hw/register.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_XLNX_ZYNQ_DEVCFG "xlnx.ps7-dev-cfg"
 
-#define XLNX_ZYNQ_DEVCFG(obj) \
-    OBJECT_CHECK(XlnxZynqDevcfg, (obj), TYPE_XLNX_ZYNQ_DEVCFG)
+typedef struct XlnxZynqDevcfg XlnxZynqDevcfg;
+DECLARE_INSTANCE_CHECKER(XlnxZynqDevcfg, XLNX_ZYNQ_DEVCFG,
+                         TYPE_XLNX_ZYNQ_DEVCFG)
 
 #define XLNX_ZYNQ_DEVCFG_R_MAX (0x100 / 4)
 
@@ -46,7 +48,7 @@ typedef struct XlnxZynqDevcfgDMACmd {
     uint32_t dest_len;
 } XlnxZynqDevcfgDMACmd;
 
-typedef struct XlnxZynqDevcfg {
+struct XlnxZynqDevcfg {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -57,6 +59,6 @@ typedef struct XlnxZynqDevcfg {
 
     uint32_t regs[XLNX_ZYNQ_DEVCFG_R_MAX];
     RegisterInfo regs_info[XLNX_ZYNQ_DEVCFG_R_MAX];
-} XlnxZynqDevcfg;
+};
 
 #endif
diff --git a/include/hw/dma/xlnx_dpdma.h b/include/hw/dma/xlnx_dpdma.h
index 7a304a5bb4..94b01cad0a 100644
--- a/include/hw/dma/xlnx_dpdma.h
+++ b/include/hw/dma/xlnx_dpdma.h
@@ -28,6 +28,7 @@
 #include "hw/sysbus.h"
 #include "ui/console.h"
 #include "sysemu/dma.h"
+#include "qom/object.h"
 
 #define XLNX_DPDMA_REG_ARRAY_SIZE (0x1000 >> 2)
 
@@ -45,7 +46,8 @@ struct XlnxDPDMAState {
 typedef struct XlnxDPDMAState XlnxDPDMAState;
 
 #define TYPE_XLNX_DPDMA "xlnx.dpdma"
-#define XLNX_DPDMA(obj) OBJECT_CHECK(XlnxDPDMAState, (obj), TYPE_XLNX_DPDMA)
+DECLARE_INSTANCE_CHECKER(XlnxDPDMAState, XLNX_DPDMA,
+                         TYPE_XLNX_DPDMA)
 
 /*
  * xlnx_dpdma_start_operation: Start the operation on the specified channel. The
diff --git a/include/hw/fw-path-provider.h b/include/hw/fw-path-provider.h
index 10d1bd4959..8e1d45651c 100644
--- a/include/hw/fw-path-provider.h
+++ b/include/hw/fw-path-provider.h
@@ -22,20 +22,19 @@
 
 #define TYPE_FW_PATH_PROVIDER "fw-path-provider"
 
-#define FW_PATH_PROVIDER_CLASS(klass) \
-     OBJECT_CLASS_CHECK(FWPathProviderClass, (klass), TYPE_FW_PATH_PROVIDER)
-#define FW_PATH_PROVIDER_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(FWPathProviderClass, (obj), TYPE_FW_PATH_PROVIDER)
+typedef struct FWPathProviderClass FWPathProviderClass;
+DECLARE_CLASS_CHECKERS(FWPathProviderClass, FW_PATH_PROVIDER,
+                       TYPE_FW_PATH_PROVIDER)
 #define FW_PATH_PROVIDER(obj) \
      INTERFACE_CHECK(FWPathProvider, (obj), TYPE_FW_PATH_PROVIDER)
 
 typedef struct FWPathProvider FWPathProvider;
 
-typedef struct FWPathProviderClass {
+struct FWPathProviderClass {
     InterfaceClass parent_class;
 
     char *(*get_dev_path)(FWPathProvider *p, BusState *bus, DeviceState *dev);
-} FWPathProviderClass;
+};
 
 char *fw_path_provider_get_dev_path(FWPathProvider *p, BusState *bus,
                                     DeviceState *dev);
diff --git a/include/hw/gpio/aspeed_gpio.h b/include/hw/gpio/aspeed_gpio.h
index a2deac046a..2582e6e0dc 100644
--- a/include/hw/gpio/aspeed_gpio.h
+++ b/include/hw/gpio/aspeed_gpio.h
@@ -11,13 +11,13 @@
 #define ASPEED_GPIO_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_GPIO "aspeed.gpio"
-#define ASPEED_GPIO(obj) OBJECT_CHECK(AspeedGPIOState, (obj), TYPE_ASPEED_GPIO)
-#define ASPEED_GPIO_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedGPIOClass, (klass), TYPE_ASPEED_GPIO)
-#define ASPEED_GPIO_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedGPIOClass, (obj), TYPE_ASPEED_GPIO)
+typedef struct AspeedGPIOClass AspeedGPIOClass;
+typedef struct AspeedGPIOState AspeedGPIOState;
+DECLARE_OBJ_CHECKERS(AspeedGPIOState, AspeedGPIOClass,
+                     ASPEED_GPIO, TYPE_ASPEED_GPIO)
 
 #define ASPEED_GPIO_MAX_NR_SETS 8
 #define ASPEED_REGS_PER_BANK 14
@@ -58,16 +58,16 @@ typedef struct AspeedGPIOReg {
     enum GPIORegType type;
  } AspeedGPIOReg;
 
-typedef struct  AspeedGPIOClass {
+struct AspeedGPIOClass {
     SysBusDevice parent_obj;
     const GPIOSetProperties *props;
     uint32_t nr_gpio_pins;
     uint32_t nr_gpio_sets;
     uint32_t gap;
     const AspeedGPIOReg *reg_table;
-}  AspeedGPIOClass;
+};
 
-typedef struct AspeedGPIOState {
+struct AspeedGPIOState {
     /* <private> */
     SysBusDevice parent;
 
@@ -95,6 +95,6 @@ typedef struct AspeedGPIOState {
         uint32_t debounce_2;
         uint32_t input_mask;
     } sets[ASPEED_GPIO_MAX_NR_SETS];
-} AspeedGPIOState;
+};
 
 #endif /* _ASPEED_GPIO_H_ */
diff --git a/include/hw/gpio/bcm2835_gpio.h b/include/hw/gpio/bcm2835_gpio.h
index b0de0a3c74..e06e08a0fe 100644
--- a/include/hw/gpio/bcm2835_gpio.h
+++ b/include/hw/gpio/bcm2835_gpio.h
@@ -16,8 +16,9 @@
 
 #include "hw/sd/sd.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
-typedef struct BCM2835GpioState {
+struct BCM2835GpioState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -31,10 +32,11 @@ typedef struct BCM2835GpioState {
     uint32_t lev0, lev1;
     uint8_t sd_fsel;
     qemu_irq out[54];
-} BCM2835GpioState;
+};
+typedef struct BCM2835GpioState BCM2835GpioState;
 
 #define TYPE_BCM2835_GPIO "bcm2835_gpio"
-#define BCM2835_GPIO(obj) \
-    OBJECT_CHECK(BCM2835GpioState, (obj), TYPE_BCM2835_GPIO)
+DECLARE_INSTANCE_CHECKER(BCM2835GpioState, BCM2835_GPIO,
+                         TYPE_BCM2835_GPIO)
 
 #endif
diff --git a/include/hw/gpio/imx_gpio.h b/include/hw/gpio/imx_gpio.h
index ffab437f23..a72b272ace 100644
--- a/include/hw/gpio/imx_gpio.h
+++ b/include/hw/gpio/imx_gpio.h
@@ -21,9 +21,12 @@
 #define IMX_GPIO_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IMX_GPIO "imx.gpio"
-#define IMX_GPIO(obj) OBJECT_CHECK(IMXGPIOState, (obj), TYPE_IMX_GPIO)
+typedef struct IMXGPIOState IMXGPIOState;
+DECLARE_INSTANCE_CHECKER(IMXGPIOState, IMX_GPIO,
+                         TYPE_IMX_GPIO)
 
 #define IMX_GPIO_MEM_SIZE 0x20
 
@@ -39,7 +42,7 @@
 
 #define IMX_GPIO_PIN_COUNT 32
 
-typedef struct IMXGPIOState {
+struct IMXGPIOState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -58,6 +61,6 @@ typedef struct IMXGPIOState {
 
     qemu_irq irq[2];
     qemu_irq output[IMX_GPIO_PIN_COUNT];
-} IMXGPIOState;
+};
 
 #endif /* IMX_GPIO_H */
diff --git a/include/hw/gpio/nrf51_gpio.h b/include/hw/gpio/nrf51_gpio.h
index 1d62bbc928..55d7d24a52 100644
--- a/include/hw/gpio/nrf51_gpio.h
+++ b/include/hw/gpio/nrf51_gpio.h
@@ -27,8 +27,11 @@
 #define NRF51_GPIO_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 #define TYPE_NRF51_GPIO "nrf51_soc.gpio"
-#define NRF51_GPIO(obj) OBJECT_CHECK(NRF51GPIOState, (obj), TYPE_NRF51_GPIO)
+typedef struct NRF51GPIOState NRF51GPIOState;
+DECLARE_INSTANCE_CHECKER(NRF51GPIOState, NRF51_GPIO,
+                         TYPE_NRF51_GPIO)
 
 #define NRF51_GPIO_PINS 32
 
@@ -47,7 +50,7 @@
 #define NRF51_GPIO_PULLDOWN 1
 #define NRF51_GPIO_PULLUP 3
 
-typedef struct NRF51GPIOState {
+struct NRF51GPIOState {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
@@ -63,7 +66,7 @@ typedef struct NRF51GPIOState {
     uint32_t old_out_connected;
 
     qemu_irq output[NRF51_GPIO_PINS];
-} NRF51GPIOState;
+};
 
 
 #endif
diff --git a/include/hw/hotplug.h b/include/hw/hotplug.h
index 6321e292fd..e15f59c8b3 100644
--- a/include/hw/hotplug.h
+++ b/include/hw/hotplug.h
@@ -16,10 +16,9 @@
 
 #define TYPE_HOTPLUG_HANDLER "hotplug-handler"
 
-#define HOTPLUG_HANDLER_CLASS(klass) \
-     OBJECT_CLASS_CHECK(HotplugHandlerClass, (klass), TYPE_HOTPLUG_HANDLER)
-#define HOTPLUG_HANDLER_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(HotplugHandlerClass, (obj), TYPE_HOTPLUG_HANDLER)
+typedef struct HotplugHandlerClass HotplugHandlerClass;
+DECLARE_CLASS_CHECKERS(HotplugHandlerClass, HOTPLUG_HANDLER,
+                       TYPE_HOTPLUG_HANDLER)
 #define HOTPLUG_HANDLER(obj) \
      INTERFACE_CHECK(HotplugHandler, (obj), TYPE_HOTPLUG_HANDLER)
 
@@ -50,7 +49,7 @@ typedef void (*hotplug_fn)(HotplugHandler *plug_handler,
  *          Used for device removal with devices that implement
  *          asynchronous and synchronous (surprise) removal.
  */
-typedef struct HotplugHandlerClass {
+struct HotplugHandlerClass {
     /* <private> */
     InterfaceClass parent;
 
@@ -59,7 +58,7 @@ typedef struct HotplugHandlerClass {
     hotplug_fn plug;
     hotplug_fn unplug_request;
     hotplug_fn unplug;
-} HotplugHandlerClass;
+};
 
 /**
  * hotplug_handler_plug:
diff --git a/include/hw/hyperv/vmbus-bridge.h b/include/hw/hyperv/vmbus-bridge.h
index fe90bda01b..1324873775 100644
--- a/include/hw/hyperv/vmbus-bridge.h
+++ b/include/hw/hyperv/vmbus-bridge.h
@@ -12,18 +12,21 @@
 
 #include "hw/sysbus.h"
 #include "hw/hyperv/vmbus.h"
+#include "qom/object.h"
 
 #define TYPE_VMBUS_BRIDGE "vmbus-bridge"
 
-typedef struct VMBusBridge {
+struct VMBusBridge {
     SysBusDevice parent_obj;
 
     uint8_t irq;
 
     VMBus *bus;
-} VMBusBridge;
+};
+typedef struct VMBusBridge VMBusBridge;
 
-#define VMBUS_BRIDGE(obj) OBJECT_CHECK(VMBusBridge, (obj), TYPE_VMBUS_BRIDGE)
+DECLARE_INSTANCE_CHECKER(VMBusBridge, VMBUS_BRIDGE,
+                         TYPE_VMBUS_BRIDGE)
 
 static inline VMBusBridge *vmbus_bridge_find(void)
 {
diff --git a/include/hw/hyperv/vmbus.h b/include/hw/hyperv/vmbus.h
index cd98ec24e7..00ad8798c1 100644
--- a/include/hw/hyperv/vmbus.h
+++ b/include/hw/hyperv/vmbus.h
@@ -16,19 +16,17 @@
 #include "migration/vmstate.h"
 #include "hw/hyperv/vmbus-proto.h"
 #include "qemu/uuid.h"
+#include "qom/object.h"
 
 #define TYPE_VMBUS_DEVICE "vmbus-dev"
 
-#define VMBUS_DEVICE(obj) \
-    OBJECT_CHECK(VMBusDevice, (obj), TYPE_VMBUS_DEVICE)
-#define VMBUS_DEVICE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(VMBusDeviceClass, (klass), TYPE_VMBUS_DEVICE)
-#define VMBUS_DEVICE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(VMBusDeviceClass, (obj), TYPE_VMBUS_DEVICE)
+OBJECT_DECLARE_TYPE(VMBusDevice, VMBusDeviceClass,
+                    vmbus_device, VMBUS_DEVICE)
 
 #define TYPE_VMBUS "vmbus"
 typedef struct VMBus VMBus;
-#define VMBUS(obj) OBJECT_CHECK(VMBus, (obj), TYPE_VMBUS)
+DECLARE_INSTANCE_CHECKER(VMBus, VMBUS,
+                         TYPE_VMBUS)
 
 /*
  * Object wrapping a GPADL -- GPA Descriptor List -- an array of guest physical
@@ -44,11 +42,10 @@ typedef struct VMBusChannel VMBusChannel;
  * Base class for VMBus devices.  Includes one or more channels.  Identified by
  * class GUID and instance GUID.
  */
-typedef struct VMBusDevice VMBusDevice;
 
 typedef void(*VMBusChannelNotifyCb)(struct VMBusChannel *chan);
 
-typedef struct VMBusDeviceClass {
+struct VMBusDeviceClass {
     DeviceClass parent;
 
     QemuUUID classid;
@@ -80,7 +77,7 @@ typedef struct VMBusDeviceClass {
      * side, when there's work to do with the data in the channel ring buffers.
      */
     VMBusChannelNotifyCb chan_notify_cb;
-} VMBusDeviceClass;
+};
 
 struct VMBusDevice {
     DeviceState parent;
diff --git a/include/hw/i2c/arm_sbcon_i2c.h b/include/hw/i2c/arm_sbcon_i2c.h
index 5d96507ab6..ad96781e7a 100644
--- a/include/hw/i2c/arm_sbcon_i2c.h
+++ b/include/hw/i2c/arm_sbcon_i2c.h
@@ -14,14 +14,16 @@
 
 #include "hw/sysbus.h"
 #include "hw/i2c/bitbang_i2c.h"
+#include "qom/object.h"
 
 #define TYPE_VERSATILE_I2C "versatile_i2c"
 #define TYPE_ARM_SBCON_I2C TYPE_VERSATILE_I2C
 
-#define ARM_SBCON_I2C(obj) \
-    OBJECT_CHECK(ArmSbconI2CState, (obj), TYPE_ARM_SBCON_I2C)
+typedef struct ArmSbconI2CState ArmSbconI2CState;
+DECLARE_INSTANCE_CHECKER(ArmSbconI2CState, ARM_SBCON_I2C,
+                         TYPE_ARM_SBCON_I2C)
 
-typedef struct ArmSbconI2CState {
+struct ArmSbconI2CState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -30,6 +32,6 @@ typedef struct ArmSbconI2CState {
     bitbang_i2c_interface bitbang;
     int out;
     int in;
-} ArmSbconI2CState;
+};
 
 #endif /* HW_I2C_ARM_SBCON_H */
diff --git a/include/hw/i2c/aspeed_i2c.h b/include/hw/i2c/aspeed_i2c.h
index 243789ae5d..695e1c0928 100644
--- a/include/hw/i2c/aspeed_i2c.h
+++ b/include/hw/i2c/aspeed_i2c.h
@@ -23,13 +23,16 @@
 
 #include "hw/i2c/i2c.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_I2C "aspeed.i2c"
 #define TYPE_ASPEED_2400_I2C TYPE_ASPEED_I2C "-ast2400"
 #define TYPE_ASPEED_2500_I2C TYPE_ASPEED_I2C "-ast2500"
 #define TYPE_ASPEED_2600_I2C TYPE_ASPEED_I2C "-ast2600"
-#define ASPEED_I2C(obj) \
-    OBJECT_CHECK(AspeedI2CState, (obj), TYPE_ASPEED_I2C)
+typedef struct AspeedI2CClass AspeedI2CClass;
+typedef struct AspeedI2CState AspeedI2CState;
+DECLARE_OBJ_CHECKERS(AspeedI2CState, AspeedI2CClass,
+                     ASPEED_I2C, TYPE_ASPEED_I2C)
 
 #define ASPEED_I2C_NR_BUSSES 16
 #define ASPEED_I2C_MAX_POOL_SIZE 0x800
@@ -56,7 +59,7 @@ typedef struct AspeedI2CBus {
     uint32_t dma_len;
 } AspeedI2CBus;
 
-typedef struct AspeedI2CState {
+struct AspeedI2CState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -70,14 +73,10 @@ typedef struct AspeedI2CState {
     AspeedI2CBus busses[ASPEED_I2C_NR_BUSSES];
     MemoryRegion *dram_mr;
     AddressSpace dram_as;
-} AspeedI2CState;
+};
 
-#define ASPEED_I2C_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedI2CClass, (klass), TYPE_ASPEED_I2C)
-#define ASPEED_I2C_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedI2CClass, (obj), TYPE_ASPEED_I2C)
 
-typedef struct AspeedI2CClass {
+struct AspeedI2CClass {
     SysBusDeviceClass parent_class;
 
     uint8_t num_busses;
@@ -91,7 +90,7 @@ typedef struct AspeedI2CClass {
     bool check_sram;
     bool has_dma;
 
-} AspeedI2CClass;
+};
 
 I2CBus *aspeed_i2c_get_bus(AspeedI2CState *s, int busnr);
 
diff --git a/include/hw/i2c/i2c.h b/include/hw/i2c/i2c.h
index f57808851e..5b8eef62c6 100644
--- a/include/hw/i2c/i2c.h
+++ b/include/hw/i2c/i2c.h
@@ -2,6 +2,7 @@
 #define QEMU_I2C_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 /* The QEMU I2C implementation only supports simple transfers that complete
    immediately.  It does not support slave devices that need to be able to
@@ -15,17 +16,12 @@ enum i2c_event {
     I2C_NACK /* Masker NACKed a receive byte.  */
 };
 
-typedef struct I2CSlave I2CSlave;
 
 #define TYPE_I2C_SLAVE "i2c-slave"
-#define I2C_SLAVE(obj) \
-     OBJECT_CHECK(I2CSlave, (obj), TYPE_I2C_SLAVE)
-#define I2C_SLAVE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(I2CSlaveClass, (klass), TYPE_I2C_SLAVE)
-#define I2C_SLAVE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(I2CSlaveClass, (obj), TYPE_I2C_SLAVE)
-
-typedef struct I2CSlaveClass {
+OBJECT_DECLARE_TYPE(I2CSlave, I2CSlaveClass,
+                    i2c_slave, I2C_SLAVE)
+
+struct I2CSlaveClass {
     DeviceClass parent_class;
 
     /* Master to slave. Returns non-zero for a NAK, 0 for success. */
@@ -43,7 +39,7 @@ typedef struct I2CSlaveClass {
      * return code is not used and should be zero.
      */
     int (*event)(I2CSlave *s, enum i2c_event event);
-} I2CSlaveClass;
+};
 
 struct I2CSlave {
     DeviceState qdev;
@@ -53,7 +49,8 @@ struct I2CSlave {
 };
 
 #define TYPE_I2C_BUS "i2c-bus"
-#define I2C_BUS(obj) OBJECT_CHECK(I2CBus, (obj), TYPE_I2C_BUS)
+DECLARE_INSTANCE_CHECKER(I2CBus, I2C_BUS,
+                         TYPE_I2C_BUS)
 
 typedef struct I2CNode I2CNode;
 
diff --git a/include/hw/i2c/imx_i2c.h b/include/hw/i2c/imx_i2c.h
index 7c73a1fa28..e7f09104cf 100644
--- a/include/hw/i2c/imx_i2c.h
+++ b/include/hw/i2c/imx_i2c.h
@@ -22,9 +22,12 @@
 #define IMX_I2C_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IMX_I2C "imx.i2c"
-#define IMX_I2C(obj) OBJECT_CHECK(IMXI2CState, (obj), TYPE_IMX_I2C)
+typedef struct IMXI2CState IMXI2CState;
+DECLARE_INSTANCE_CHECKER(IMXI2CState, IMX_I2C,
+                         TYPE_IMX_I2C)
 
 #define IMX_I2C_MEM_SIZE           0x14
 
@@ -65,7 +68,7 @@
 
 #define ADDR_RESET                 0xFF00
 
-typedef struct IMXI2CState {
+struct IMXI2CState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -82,6 +85,6 @@ typedef struct IMXI2CState {
     uint16_t i2sr;
     uint16_t i2dr_read;
     uint16_t i2dr_write;
-} IMXI2CState;
+};
 
 #endif /* IMX_I2C_H */
diff --git a/include/hw/i2c/microbit_i2c.h b/include/hw/i2c/microbit_i2c.h
index 2bff36680c..69d70287d7 100644
--- a/include/hw/i2c/microbit_i2c.h
+++ b/include/hw/i2c/microbit_i2c.h
@@ -13,6 +13,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/arm/nrf51.h"
+#include "qom/object.h"
 
 #define NRF51_TWI_TASK_STARTRX 0x000
 #define NRF51_TWI_TASK_STARTTX 0x008
@@ -26,17 +27,18 @@
 #define NRF51_TWI_REG_ADDRESS 0x588
 
 #define TYPE_MICROBIT_I2C "microbit.i2c"
-#define MICROBIT_I2C(obj) \
-    OBJECT_CHECK(MicrobitI2CState, (obj), TYPE_MICROBIT_I2C)
+typedef struct MicrobitI2CState MicrobitI2CState;
+DECLARE_INSTANCE_CHECKER(MicrobitI2CState, MICROBIT_I2C,
+                         TYPE_MICROBIT_I2C)
 
 #define MICROBIT_I2C_NREGS (NRF51_PERIPHERAL_SIZE / sizeof(uint32_t))
 
-typedef struct {
+struct MicrobitI2CState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
     uint32_t regs[MICROBIT_I2C_NREGS];
     uint32_t read_idx;
-} MicrobitI2CState;
+};
 
 #endif /* MICROBIT_I2C_H */
diff --git a/include/hw/i2c/ppc4xx_i2c.h b/include/hw/i2c/ppc4xx_i2c.h
index f6f837fbec..7cbcdaf12f 100644
--- a/include/hw/i2c/ppc4xx_i2c.h
+++ b/include/hw/i2c/ppc4xx_i2c.h
@@ -29,11 +29,14 @@
 
 #include "hw/sysbus.h"
 #include "hw/i2c/bitbang_i2c.h"
+#include "qom/object.h"
 
 #define TYPE_PPC4xx_I2C "ppc4xx-i2c"
-#define PPC4xx_I2C(obj) OBJECT_CHECK(PPC4xxI2CState, (obj), TYPE_PPC4xx_I2C)
+typedef struct PPC4xxI2CState PPC4xxI2CState;
+DECLARE_INSTANCE_CHECKER(PPC4xxI2CState, PPC4xx_I2C,
+                         TYPE_PPC4xx_I2C)
 
-typedef struct PPC4xxI2CState {
+struct PPC4xxI2CState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -57,6 +60,6 @@ typedef struct PPC4xxI2CState {
     uint8_t xfrcnt;
     uint8_t xtcntlss;
     uint8_t directcntl;
-} PPC4xxI2CState;
+};
 
 #endif /* PPC4XX_I2C_H */
diff --git a/include/hw/i2c/smbus_slave.h b/include/hw/i2c/smbus_slave.h
index ebe068304e..cb9cb372f9 100644
--- a/include/hw/i2c/smbus_slave.h
+++ b/include/hw/i2c/smbus_slave.h
@@ -26,19 +26,14 @@
 #define HW_SMBUS_SLAVE_H
 
 #include "hw/i2c/i2c.h"
+#include "qom/object.h"
 
 #define TYPE_SMBUS_DEVICE "smbus-device"
-#define SMBUS_DEVICE(obj) \
-     OBJECT_CHECK(SMBusDevice, (obj), TYPE_SMBUS_DEVICE)
-#define SMBUS_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(SMBusDeviceClass, (klass), TYPE_SMBUS_DEVICE)
-#define SMBUS_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SMBusDeviceClass, (obj), TYPE_SMBUS_DEVICE)
+OBJECT_DECLARE_TYPE(SMBusDevice, SMBusDeviceClass,
+                    smbus_device, SMBUS_DEVICE)
 
-typedef struct SMBusDevice SMBusDevice;
 
-typedef struct SMBusDeviceClass
-{
+struct SMBusDeviceClass {
     I2CSlaveClass parent_class;
 
     /*
@@ -67,7 +62,7 @@ typedef struct SMBusDeviceClass
      * return 0xff in that case.
      */
     uint8_t (*receive_byte)(SMBusDevice *dev);
-} SMBusDeviceClass;
+};
 
 #define SMBUS_DATA_MAX_LEN 34  /* command + len + 32 bytes of data.  */
 
diff --git a/include/hw/i386/apic_internal.h b/include/hw/i386/apic_internal.h
index 2597000e03..da38541627 100644
--- a/include/hw/i386/apic_internal.h
+++ b/include/hw/i386/apic_internal.h
@@ -25,6 +25,7 @@
 #include "exec/memory.h"
 #include "qemu/timer.h"
 #include "target/i386/cpu-qom.h"
+#include "qom/object.h"
 
 /* APIC Local Vector Table */
 #define APIC_LVT_TIMER                  0
@@ -125,15 +126,11 @@
 typedef struct APICCommonState APICCommonState;
 
 #define TYPE_APIC_COMMON "apic-common"
-#define APIC_COMMON(obj) \
-     OBJECT_CHECK(APICCommonState, (obj), TYPE_APIC_COMMON)
-#define APIC_COMMON_CLASS(klass) \
-     OBJECT_CLASS_CHECK(APICCommonClass, (klass), TYPE_APIC_COMMON)
-#define APIC_COMMON_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(APICCommonClass, (obj), TYPE_APIC_COMMON)
-
-typedef struct APICCommonClass
-{
+typedef struct APICCommonClass APICCommonClass;
+DECLARE_OBJ_CHECKERS(APICCommonState, APICCommonClass,
+                     APIC_COMMON, TYPE_APIC_COMMON)
+
+struct APICCommonClass {
     DeviceClass parent_class;
 
     DeviceRealize realize;
@@ -151,7 +148,7 @@ typedef struct APICCommonClass
      * device, but it's convenient to have it here for now.
      */
     void (*send_msi)(MSIMessage *msi);
-} APICCommonClass;
+};
 
 struct APICCommonState {
     /*< private >*/
diff --git a/include/hw/i386/ich9.h b/include/hw/i386/ich9.h
index a98d10b252..e750d67975 100644
--- a/include/hw/i386/ich9.h
+++ b/include/hw/i386/ich9.h
@@ -11,6 +11,7 @@
 #include "hw/acpi/acpi.h"
 #include "hw/acpi/ich9.h"
 #include "hw/pci/pci_bus.h"
+#include "qom/object.h"
 
 void ich9_lpc_set_irq(void *opaque, int irq_num, int level);
 int ich9_lpc_map_irq(PCIDevice *pci_dev, int intx);
@@ -23,10 +24,11 @@ void ich9_generate_smi(void);
 #define ICH9_CC_SIZE (16 * 1024) /* 16KB. Chipset configuration registers */
 
 #define TYPE_ICH9_LPC_DEVICE "ICH9-LPC"
-#define ICH9_LPC_DEVICE(obj) \
-     OBJECT_CHECK(ICH9LPCState, (obj), TYPE_ICH9_LPC_DEVICE)
+typedef struct ICH9LPCState ICH9LPCState;
+DECLARE_INSTANCE_CHECKER(ICH9LPCState, ICH9_LPC_DEVICE,
+                         TYPE_ICH9_LPC_DEVICE)
 
-typedef struct ICH9LPCState {
+struct ICH9LPCState {
     /* ICH9 LPC PCI to ISA bridge */
     PCIDevice d;
 
@@ -77,7 +79,7 @@ typedef struct ICH9LPCState {
     Notifier machine_ready;
 
     qemu_irq gsi[GSI_NUM_PINS];
-} ICH9LPCState;
+};
 
 #define Q35_MASK(bit, ms_bit, ls_bit) \
 ((uint##bit##_t)(((1ULL << ((ms_bit) + 1)) - 1) & ~((1ULL << ls_bit) - 1)))
diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h
index 3870052f5f..98cfc77723 100644
--- a/include/hw/i386/intel_iommu.h
+++ b/include/hw/i386/intel_iommu.h
@@ -24,10 +24,12 @@
 
 #include "hw/i386/x86-iommu.h"
 #include "qemu/iova-tree.h"
+#include "qom/object.h"
 
 #define TYPE_INTEL_IOMMU_DEVICE "intel-iommu"
-#define INTEL_IOMMU_DEVICE(obj) \
-     OBJECT_CHECK(IntelIOMMUState, (obj), TYPE_INTEL_IOMMU_DEVICE)
+typedef struct IntelIOMMUState IntelIOMMUState;
+DECLARE_INSTANCE_CHECKER(IntelIOMMUState, INTEL_IOMMU_DEVICE,
+                         TYPE_INTEL_IOMMU_DEVICE)
 
 #define TYPE_INTEL_IOMMU_MEMORY_REGION "intel-iommu-iommu-memory-region"
 
@@ -56,7 +58,6 @@
 
 typedef struct VTDContextEntry VTDContextEntry;
 typedef struct VTDContextCacheEntry VTDContextCacheEntry;
-typedef struct IntelIOMMUState IntelIOMMUState;
 typedef struct VTDAddressSpace VTDAddressSpace;
 typedef struct VTDIOTLBEntry VTDIOTLBEntry;
 typedef struct VTDBus VTDBus;
diff --git a/include/hw/i386/ioapic_internal.h b/include/hw/i386/ioapic_internal.h
index fe06938bda..e9cc2eaf54 100644
--- a/include/hw/i386/ioapic_internal.h
+++ b/include/hw/i386/ioapic_internal.h
@@ -25,6 +25,7 @@
 #include "exec/memory.h"
 #include "hw/sysbus.h"
 #include "qemu/notify.h"
+#include "qom/object.h"
 
 #define MAX_IOAPICS                     1
 
@@ -84,21 +85,18 @@
 typedef struct IOAPICCommonState IOAPICCommonState;
 
 #define TYPE_IOAPIC_COMMON "ioapic-common"
-#define IOAPIC_COMMON(obj) \
-     OBJECT_CHECK(IOAPICCommonState, (obj), TYPE_IOAPIC_COMMON)
-#define IOAPIC_COMMON_CLASS(klass) \
-     OBJECT_CLASS_CHECK(IOAPICCommonClass, (klass), TYPE_IOAPIC_COMMON)
-#define IOAPIC_COMMON_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(IOAPICCommonClass, (obj), TYPE_IOAPIC_COMMON)
-
-typedef struct IOAPICCommonClass {
+typedef struct IOAPICCommonClass IOAPICCommonClass;
+DECLARE_OBJ_CHECKERS(IOAPICCommonState, IOAPICCommonClass,
+                     IOAPIC_COMMON, TYPE_IOAPIC_COMMON)
+
+struct IOAPICCommonClass {
     SysBusDeviceClass parent_class;
 
     DeviceRealize realize;
     DeviceUnrealize unrealize;
     void (*pre_save)(IOAPICCommonState *s);
     void (*post_load)(IOAPICCommonState *s);
-} IOAPICCommonClass;
+};
 
 struct IOAPICCommonState {
     SysBusDevice busdev;
diff --git a/include/hw/i386/microvm.h b/include/hw/i386/microvm.h
index fd34b78e0d..36dbcdd123 100644
--- a/include/hw/i386/microvm.h
+++ b/include/hw/i386/microvm.h
@@ -24,6 +24,7 @@
 
 #include "hw/boards.h"
 #include "hw/i386/x86.h"
+#include "qom/object.h"
 
 /* Platform virtio definitions */
 #define VIRTIO_MMIO_BASE      0xfeb00000
@@ -39,13 +40,14 @@
 #define MICROVM_MACHINE_OPTION_ROMS         "x-option-roms"
 #define MICROVM_MACHINE_AUTO_KERNEL_CMDLINE "auto-kernel-cmdline"
 
-typedef struct {
+struct MicrovmMachineClass {
     X86MachineClass parent;
     HotplugHandler *(*orig_hotplug_handler)(MachineState *machine,
                                            DeviceState *dev);
-} MicrovmMachineClass;
+};
+typedef struct MicrovmMachineClass MicrovmMachineClass;
 
-typedef struct {
+struct MicrovmMachineState {
     X86MachineState parent;
 
     /* Machine type options */
@@ -58,14 +60,11 @@ typedef struct {
 
     /* Machine state */
     bool kernel_cmdline_fixed;
-} MicrovmMachineState;
+};
+typedef struct MicrovmMachineState MicrovmMachineState;
 
 #define TYPE_MICROVM_MACHINE   MACHINE_TYPE_NAME("microvm")
-#define MICROVM_MACHINE(obj) \
-    OBJECT_CHECK(MicrovmMachineState, (obj), TYPE_MICROVM_MACHINE)
-#define MICROVM_MACHINE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(MicrovmMachineClass, obj, TYPE_MICROVM_MACHINE)
-#define MICROVM_MACHINE_CLASS(class) \
-    OBJECT_CLASS_CHECK(MicrovmMachineClass, class, TYPE_MICROVM_MACHINE)
+DECLARE_OBJ_CHECKERS(MicrovmMachineState, MicrovmMachineClass,
+                     MICROVM_MACHINE, TYPE_MICROVM_MACHINE)
 
 #endif
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index fe52e165b2..421a77acc2 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -10,6 +10,7 @@
 
 #include "hw/acpi/acpi_dev_interface.h"
 #include "hw/hotplug.h"
+#include "qom/object.h"
 
 #define HPET_INTCAP "hpet-intcap"
 
@@ -76,7 +77,7 @@ struct PCMachineState {
  *                  way we can use 1GByte pages in the host.
  *
  */
-typedef struct PCMachineClass {
+struct PCMachineClass {
     /*< private >*/
     X86MachineClass parent_class;
 
@@ -118,15 +119,12 @@ typedef struct PCMachineClass {
 
     /* use PVH to load kernels that support this feature */
     bool pvh_enabled;
-} PCMachineClass;
+};
+typedef struct PCMachineClass PCMachineClass;
 
 #define TYPE_PC_MACHINE "generic-pc-machine"
-#define PC_MACHINE(obj) \
-    OBJECT_CHECK(PCMachineState, (obj), TYPE_PC_MACHINE)
-#define PC_MACHINE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(PCMachineClass, (obj), TYPE_PC_MACHINE)
-#define PC_MACHINE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(PCMachineClass, (klass), TYPE_PC_MACHINE)
+DECLARE_OBJ_CHECKERS(PCMachineState, PCMachineClass,
+                     PC_MACHINE, TYPE_PC_MACHINE)
 
 /* ioapic.c */
 
diff --git a/include/hw/i386/x86-iommu.h b/include/hw/i386/x86-iommu.h
index 18420ada15..bbfaf44e79 100644
--- a/include/hw/i386/x86-iommu.h
+++ b/include/hw/i386/x86-iommu.h
@@ -23,19 +23,16 @@
 #include "hw/sysbus.h"
 #include "hw/pci/pci.h"
 #include "hw/pci/msi.h"
+#include "qom/object.h"
 
 #define  TYPE_X86_IOMMU_DEVICE  ("x86-iommu")
-#define  X86_IOMMU_DEVICE(obj) \
-    OBJECT_CHECK(X86IOMMUState, (obj), TYPE_X86_IOMMU_DEVICE)
-#define  X86_IOMMU_DEVICE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(X86IOMMUClass, (klass), TYPE_X86_IOMMU_DEVICE)
-#define  X86_IOMMU_DEVICE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(X86IOMMUClass, obj, TYPE_X86_IOMMU_DEVICE)
+typedef struct X86IOMMUClass X86IOMMUClass;
+typedef struct X86IOMMUState X86IOMMUState;
+DECLARE_OBJ_CHECKERS(X86IOMMUState, X86IOMMUClass,
+                     X86_IOMMU_DEVICE, TYPE_X86_IOMMU_DEVICE)
 
 #define X86_IOMMU_SID_INVALID             (0xffff)
 
-typedef struct X86IOMMUState X86IOMMUState;
-typedef struct X86IOMMUClass X86IOMMUClass;
 typedef struct X86IOMMUIrq X86IOMMUIrq;
 typedef struct X86IOMMU_MSIMessage X86IOMMU_MSIMessage;
 
diff --git a/include/hw/i386/x86.h b/include/hw/i386/x86.h
index 4d9a26326d..1a188a7dea 100644
--- a/include/hw/i386/x86.h
+++ b/include/hw/i386/x86.h
@@ -26,8 +26,9 @@
 #include "hw/nmi.h"
 #include "hw/isa/isa.h"
 #include "hw/i386/ioapic.h"
+#include "qom/object.h"
 
-typedef struct {
+struct X86MachineClass {
     /*< private >*/
     MachineClass parent;
 
@@ -37,9 +38,10 @@ typedef struct {
     bool save_tsc_khz;
     /* Enables contiguous-apic-ID mode */
     bool compat_apic_id_mode;
-} X86MachineClass;
+};
+typedef struct X86MachineClass X86MachineClass;
 
-typedef struct {
+struct X86MachineState {
     /*< private >*/
     MachineState parent;
 
@@ -68,18 +70,15 @@ typedef struct {
      * will be translated to MSI messages in the address space.
      */
     AddressSpace *ioapic_as;
-} X86MachineState;
+};
+typedef struct X86MachineState X86MachineState;
 
 #define X86_MACHINE_SMM              "smm"
 #define X86_MACHINE_ACPI             "acpi"
 
 #define TYPE_X86_MACHINE   MACHINE_TYPE_NAME("x86")
-#define X86_MACHINE(obj) \
-    OBJECT_CHECK(X86MachineState, (obj), TYPE_X86_MACHINE)
-#define X86_MACHINE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(X86MachineClass, obj, TYPE_X86_MACHINE)
-#define X86_MACHINE_CLASS(class) \
-    OBJECT_CLASS_CHECK(X86MachineClass, class, TYPE_X86_MACHINE)
+DECLARE_OBJ_CHECKERS(X86MachineState, X86MachineClass,
+                     X86_MACHINE, TYPE_X86_MACHINE)
 
 void init_topo_info(X86CPUTopoInfo *topo_info, const X86MachineState *x86ms);
 
diff --git a/include/hw/ide/ahci.h b/include/hw/ide/ahci.h
index 41bb517047..da3cddcc65 100644
--- a/include/hw/ide/ahci.h
+++ b/include/hw/ide/ahci.h
@@ -25,6 +25,7 @@
 #define HW_IDE_AHCI_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 typedef struct AHCIDevice AHCIDevice;
 
@@ -53,38 +54,41 @@ typedef struct AHCIState {
 typedef struct AHCIPCIState AHCIPCIState;
 
 #define TYPE_ICH9_AHCI "ich9-ahci"
-#define ICH_AHCI(obj) \
-    OBJECT_CHECK(AHCIPCIState, (obj), TYPE_ICH9_AHCI)
+DECLARE_INSTANCE_CHECKER(AHCIPCIState, ICH9_AHCI,
+                         TYPE_ICH9_AHCI)
 
 int32_t ahci_get_num_ports(PCIDevice *dev);
 void ahci_ide_create_devs(PCIDevice *dev, DriveInfo **hd);
 
 #define TYPE_SYSBUS_AHCI "sysbus-ahci"
-#define SYSBUS_AHCI(obj) OBJECT_CHECK(SysbusAHCIState, (obj), TYPE_SYSBUS_AHCI)
+typedef struct SysbusAHCIState SysbusAHCIState;
+DECLARE_INSTANCE_CHECKER(SysbusAHCIState, SYSBUS_AHCI,
+                         TYPE_SYSBUS_AHCI)
 
-typedef struct SysbusAHCIState {
+struct SysbusAHCIState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
 
     AHCIState ahci;
     uint32_t num_ports;
-} SysbusAHCIState;
+};
 
 #define TYPE_ALLWINNER_AHCI "allwinner-ahci"
-#define ALLWINNER_AHCI(obj) \
-        OBJECT_CHECK(AllwinnerAHCIState, (obj), TYPE_ALLWINNER_AHCI)
+typedef struct AllwinnerAHCIState AllwinnerAHCIState;
+DECLARE_INSTANCE_CHECKER(AllwinnerAHCIState, ALLWINNER_AHCI,
+                         TYPE_ALLWINNER_AHCI)
 
 #define ALLWINNER_AHCI_MMIO_OFF  0x80
 #define ALLWINNER_AHCI_MMIO_SIZE 0x80
 
-typedef struct AllwinnerAHCIState {
+struct AllwinnerAHCIState {
     /*< private >*/
     SysbusAHCIState parent_obj;
     /*< public >*/
 
     MemoryRegion mmio;
     uint32_t regs[ALLWINNER_AHCI_MMIO_SIZE/4];
-} AllwinnerAHCIState;
+};
 
 #endif /* HW_IDE_AHCI_H */
diff --git a/include/hw/ide/internal.h b/include/hw/ide/internal.h
index 1a7869e85d..eb9eb4e0ae 100644
--- a/include/hw/ide/internal.h
+++ b/include/hw/ide/internal.h
@@ -17,6 +17,7 @@
 
 /* debug IDE devices */
 #define USE_DMA_CDROM
+#include "qom/object.h"
 
 typedef struct IDEBus IDEBus;
 typedef struct IDEDevice IDEDevice;
@@ -25,7 +26,8 @@ typedef struct IDEDMA IDEDMA;
 typedef struct IDEDMAOps IDEDMAOps;
 
 #define TYPE_IDE_BUS "IDE"
-#define IDE_BUS(obj) OBJECT_CHECK(IDEBus, (obj), TYPE_IDE_BUS)
+DECLARE_INSTANCE_CHECKER(IDEBus, IDE_BUS,
+                         TYPE_IDE_BUS)
 
 #define MAX_IDE_DEVS 2
 
@@ -486,17 +488,14 @@ struct IDEBus {
 };
 
 #define TYPE_IDE_DEVICE "ide-device"
-#define IDE_DEVICE(obj) \
-     OBJECT_CHECK(IDEDevice, (obj), TYPE_IDE_DEVICE)
-#define IDE_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(IDEDeviceClass, (klass), TYPE_IDE_DEVICE)
-#define IDE_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(IDEDeviceClass, (obj), TYPE_IDE_DEVICE)
-
-typedef struct IDEDeviceClass {
+typedef struct IDEDeviceClass IDEDeviceClass;
+DECLARE_OBJ_CHECKERS(IDEDevice, IDEDeviceClass,
+                     IDE_DEVICE, TYPE_IDE_DEVICE)
+
+struct IDEDeviceClass {
     DeviceClass parent_class;
     void (*realize)(IDEDevice *dev, Error **errp);
-} IDEDeviceClass;
+};
 
 struct IDEDevice {
     DeviceState qdev;
diff --git a/include/hw/ide/pci.h b/include/hw/ide/pci.h
index dd504e5a0b..b8d7270ec8 100644
--- a/include/hw/ide/pci.h
+++ b/include/hw/ide/pci.h
@@ -3,6 +3,7 @@
 
 #include "hw/ide/internal.h"
 #include "hw/pci/pci.h"
+#include "qom/object.h"
 
 #define BM_STATUS_DMAING 0x01
 #define BM_STATUS_ERROR  0x02
@@ -39,9 +40,11 @@ typedef struct BMDMAState {
 } BMDMAState;
 
 #define TYPE_PCI_IDE "pci-ide"
-#define PCI_IDE(obj) OBJECT_CHECK(PCIIDEState, (obj), TYPE_PCI_IDE)
+typedef struct PCIIDEState PCIIDEState;
+DECLARE_INSTANCE_CHECKER(PCIIDEState, PCI_IDE,
+                         TYPE_PCI_IDE)
 
-typedef struct PCIIDEState {
+struct PCIIDEState {
     /*< private >*/
     PCIDevice parent_obj;
     /*< public >*/
@@ -52,7 +55,7 @@ typedef struct PCIIDEState {
     MemoryRegion bmdma_bar;
     MemoryRegion cmd_bar[2];
     MemoryRegion data_bar[2];
-} PCIIDEState;
+};
 
 static inline IDEState *bmdma_active_if(BMDMAState *bmdma)
 {
diff --git a/include/hw/input/adb.h b/include/hw/input/adb.h
index bb75a7b1e3..285f70db55 100644
--- a/include/hw/input/adb.h
+++ b/include/hw/input/adb.h
@@ -27,6 +27,7 @@
 #define ADB_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define MAX_ADB_DEVICES 16
 
@@ -42,7 +43,9 @@ typedef int ADBDeviceRequest(ADBDevice *d, uint8_t *buf_out,
 typedef bool ADBDeviceHasData(ADBDevice *d);
 
 #define TYPE_ADB_DEVICE "adb-device"
-#define ADB_DEVICE(obj) OBJECT_CHECK(ADBDevice, (obj), TYPE_ADB_DEVICE)
+typedef struct ADBDeviceClass ADBDeviceClass;
+DECLARE_OBJ_CHECKERS(ADBDevice, ADBDeviceClass,
+                     ADB_DEVICE, TYPE_ADB_DEVICE)
 
 struct ADBDevice {
     /*< private >*/
@@ -53,22 +56,19 @@ struct ADBDevice {
     int handler;
 };
 
-#define ADB_DEVICE_CLASS(cls) \
-    OBJECT_CLASS_CHECK(ADBDeviceClass, (cls), TYPE_ADB_DEVICE)
-#define ADB_DEVICE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(ADBDeviceClass, (obj), TYPE_ADB_DEVICE)
 
-typedef struct ADBDeviceClass {
+struct ADBDeviceClass {
     /*< private >*/
     DeviceClass parent_class;
     /*< public >*/
 
     ADBDeviceRequest *devreq;
     ADBDeviceHasData *devhasdata;
-} ADBDeviceClass;
+};
 
 #define TYPE_ADB_BUS "apple-desktop-bus"
-#define ADB_BUS(obj) OBJECT_CHECK(ADBBusState, (obj), TYPE_ADB_BUS)
+DECLARE_INSTANCE_CHECKER(ADBBusState, ADB_BUS,
+                         TYPE_ADB_BUS)
 
 #define ADB_STATUS_BUSTIMEOUT  0x1
 #define ADB_STATUS_POLLREPLY   0x2
diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h
index 4569dfddd9..f8a3bf88ac 100644
--- a/include/hw/input/i8042.h
+++ b/include/hw/input/i8042.h
@@ -9,13 +9,15 @@
 #define HW_INPUT_I8042_H
 
 #include "hw/isa/isa.h"
+#include "qom/object.h"
 
 #define TYPE_I8042 "i8042"
-#define I8042(obj) OBJECT_CHECK(ISAKBDState, (obj), TYPE_I8042)
+typedef struct ISAKBDState ISAKBDState;
+DECLARE_INSTANCE_CHECKER(ISAKBDState, I8042,
+                         TYPE_I8042)
 
 #define I8042_A20_LINE "a20"
 
-typedef struct ISAKBDState ISAKBDState;
 
 void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
                    MemoryRegion *region, ram_addr_t size,
diff --git a/include/hw/intc/allwinner-a10-pic.h b/include/hw/intc/allwinner-a10-pic.h
index a5895401d1..4d7199480a 100644
--- a/include/hw/intc/allwinner-a10-pic.h
+++ b/include/hw/intc/allwinner-a10-pic.h
@@ -2,9 +2,12 @@
 #define ALLWINNER_A10_PIC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_AW_A10_PIC  "allwinner-a10-pic"
-#define AW_A10_PIC(obj) OBJECT_CHECK(AwA10PICState, (obj), TYPE_AW_A10_PIC)
+typedef struct AwA10PICState AwA10PICState;
+DECLARE_INSTANCE_CHECKER(AwA10PICState, AW_A10_PIC,
+                         TYPE_AW_A10_PIC)
 
 #define AW_A10_PIC_VECTOR       0
 #define AW_A10_PIC_BASE_ADDR    4
@@ -19,7 +22,7 @@
 #define AW_A10_PIC_INT_NR       95
 #define AW_A10_PIC_REG_NUM      DIV_ROUND_UP(AW_A10_PIC_INT_NR, 32)
 
-typedef struct AwA10PICState {
+struct AwA10PICState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -37,6 +40,6 @@ typedef struct AwA10PICState {
     uint32_t enable[AW_A10_PIC_REG_NUM];
     uint32_t mask[AW_A10_PIC_REG_NUM];
     /*priority setting here*/
-} AwA10PICState;
+};
 
 #endif
diff --git a/include/hw/intc/arm_gic.h b/include/hw/intc/arm_gic.h
index 303b9748cb..116ccbb5a9 100644
--- a/include/hw/intc/arm_gic.h
+++ b/include/hw/intc/arm_gic.h
@@ -65,6 +65,7 @@
 #define HW_ARM_GIC_H
 
 #include "arm_gic_common.h"
+#include "qom/object.h"
 
 /* Number of SGI target-list bits */
 #define GIC_TARGETLIST_BITS 8
@@ -72,19 +73,17 @@
 #define GIC_MIN_PRIORITY_BITS 4
 
 #define TYPE_ARM_GIC "arm_gic"
-#define ARM_GIC(obj) \
-     OBJECT_CHECK(GICState, (obj), TYPE_ARM_GIC)
-#define ARM_GIC_CLASS(klass) \
-     OBJECT_CLASS_CHECK(ARMGICClass, (klass), TYPE_ARM_GIC)
-#define ARM_GIC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(ARMGICClass, (obj), TYPE_ARM_GIC)
+typedef struct ARMGICClass ARMGICClass;
+/* This is reusing the GICState typedef from TYPE_ARM_GIC_COMMON */
+DECLARE_OBJ_CHECKERS(GICState, ARMGICClass,
+                     ARM_GIC, TYPE_ARM_GIC)
 
-typedef struct ARMGICClass {
+struct ARMGICClass {
     /*< private >*/
     ARMGICCommonClass parent_class;
     /*< public >*/
 
     DeviceRealize parent_realize;
-} ARMGICClass;
+};
 
 #endif
diff --git a/include/hw/intc/arm_gic_common.h b/include/hw/intc/arm_gic_common.h
index 6e0d6b8a88..7080375008 100644
--- a/include/hw/intc/arm_gic_common.h
+++ b/include/hw/intc/arm_gic_common.h
@@ -22,6 +22,7 @@
 #define HW_ARM_GIC_COMMON_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 /* Maximum number of possible interrupts, determined by the GIC architecture */
 #define GIC_MAXIRQ 1020
@@ -61,7 +62,7 @@ typedef struct gic_irq_state {
     uint8_t group;
 } gic_irq_state;
 
-typedef struct GICState {
+struct GICState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -143,24 +144,22 @@ typedef struct GICState {
     bool irq_reset_nonsecure; /* configure IRQs as group 1 (NS) on reset? */
     int dev_fd; /* kvm device fd if backed by kvm vgic support */
     Error *migration_blocker;
-} GICState;
+};
+typedef struct GICState GICState;
 
 #define TYPE_ARM_GIC_COMMON "arm_gic_common"
-#define ARM_GIC_COMMON(obj) \
-     OBJECT_CHECK(GICState, (obj), TYPE_ARM_GIC_COMMON)
-#define ARM_GIC_COMMON_CLASS(klass) \
-     OBJECT_CLASS_CHECK(ARMGICCommonClass, (klass), TYPE_ARM_GIC_COMMON)
-#define ARM_GIC_COMMON_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(ARMGICCommonClass, (obj), TYPE_ARM_GIC_COMMON)
-
-typedef struct ARMGICCommonClass {
+typedef struct ARMGICCommonClass ARMGICCommonClass;
+DECLARE_OBJ_CHECKERS(GICState, ARMGICCommonClass,
+                     ARM_GIC_COMMON, TYPE_ARM_GIC_COMMON)
+
+struct ARMGICCommonClass {
     /*< private >*/
     SysBusDeviceClass parent_class;
     /*< public >*/
 
     void (*pre_save)(GICState *s);
     void (*post_load)(GICState *s);
-} ARMGICCommonClass;
+};
 
 void gic_init_irqs_and_mmio(GICState *s, qemu_irq_handler handler,
                             const MemoryRegionOps *ops,
diff --git a/include/hw/intc/arm_gicv3.h b/include/hw/intc/arm_gicv3.h
index 4a6fd85e22..a81a6ae7ec 100644
--- a/include/hw/intc/arm_gicv3.h
+++ b/include/hw/intc/arm_gicv3.h
@@ -13,20 +13,20 @@
 #define HW_ARM_GICV3_H
 
 #include "arm_gicv3_common.h"
+#include "qom/object.h"
 
 #define TYPE_ARM_GICV3 "arm-gicv3"
-#define ARM_GICV3(obj) OBJECT_CHECK(GICv3State, (obj), TYPE_ARM_GICV3)
-#define ARM_GICV3_CLASS(klass) \
-     OBJECT_CLASS_CHECK(ARMGICv3Class, (klass), TYPE_ARM_GICV3)
-#define ARM_GICV3_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(ARMGICv3Class, (obj), TYPE_ARM_GICV3)
+typedef struct ARMGICv3Class ARMGICv3Class;
+/* This is reusing the GICState typedef from TYPE_ARM_GICV3_COMMON */
+DECLARE_OBJ_CHECKERS(GICv3State, ARMGICv3Class,
+                     ARM_GICV3, TYPE_ARM_GICV3)
 
-typedef struct ARMGICv3Class {
+struct ARMGICv3Class {
     /*< private >*/
     ARMGICv3CommonClass parent_class;
     /*< public >*/
 
     DeviceRealize parent_realize;
-} ARMGICv3Class;
+};
 
 #endif
diff --git a/include/hw/intc/arm_gicv3_common.h b/include/hw/intc/arm_gicv3_common.h
index 31ec9a1ae4..0331b0ffdb 100644
--- a/include/hw/intc/arm_gicv3_common.h
+++ b/include/hw/intc/arm_gicv3_common.h
@@ -26,6 +26,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/intc/arm_gic_common.h"
+#include "qom/object.h"
 
 /*
  * Maximum number of possible interrupts, determined by the GIC architecture.
@@ -279,21 +280,18 @@ GICV3_BITMAP_ACCESSORS(level)
 GICV3_BITMAP_ACCESSORS(edge_trigger)
 
 #define TYPE_ARM_GICV3_COMMON "arm-gicv3-common"
-#define ARM_GICV3_COMMON(obj) \
-     OBJECT_CHECK(GICv3State, (obj), TYPE_ARM_GICV3_COMMON)
-#define ARM_GICV3_COMMON_CLASS(klass) \
-     OBJECT_CLASS_CHECK(ARMGICv3CommonClass, (klass), TYPE_ARM_GICV3_COMMON)
-#define ARM_GICV3_COMMON_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(ARMGICv3CommonClass, (obj), TYPE_ARM_GICV3_COMMON)
-
-typedef struct ARMGICv3CommonClass {
+typedef struct ARMGICv3CommonClass ARMGICv3CommonClass;
+DECLARE_OBJ_CHECKERS(GICv3State, ARMGICv3CommonClass,
+                     ARM_GICV3_COMMON, TYPE_ARM_GICV3_COMMON)
+
+struct ARMGICv3CommonClass {
     /*< private >*/
     SysBusDeviceClass parent_class;
     /*< public >*/
 
     void (*pre_save)(GICv3State *s);
     void (*post_load)(GICv3State *s);
-} ARMGICv3CommonClass;
+};
 
 void gicv3_init_irqs_and_mmio(GICv3State *s, qemu_irq_handler handler,
                               const MemoryRegionOps *ops, Error **errp);
diff --git a/include/hw/intc/arm_gicv3_its_common.h b/include/hw/intc/arm_gicv3_its_common.h
index fd1fe64c03..5a0952b404 100644
--- a/include/hw/intc/arm_gicv3_its_common.h
+++ b/include/hw/intc/arm_gicv3_its_common.h
@@ -23,6 +23,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/intc/arm_gicv3_common.h"
+#include "qom/object.h"
 
 #define ITS_CONTROL_SIZE 0x10000
 #define ITS_TRANS_SIZE   0x10000
@@ -64,12 +65,9 @@ typedef struct GICv3ITSState GICv3ITSState;
 void gicv3_its_init_mmio(GICv3ITSState *s, const MemoryRegionOps *ops);
 
 #define TYPE_ARM_GICV3_ITS_COMMON "arm-gicv3-its-common"
-#define ARM_GICV3_ITS_COMMON(obj) \
-     OBJECT_CHECK(GICv3ITSState, (obj), TYPE_ARM_GICV3_ITS_COMMON)
-#define ARM_GICV3_ITS_COMMON_CLASS(klass) \
-     OBJECT_CLASS_CHECK(GICv3ITSCommonClass, (klass), TYPE_ARM_GICV3_ITS_COMMON)
-#define ARM_GICV3_ITS_COMMON_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(GICv3ITSCommonClass, (obj), TYPE_ARM_GICV3_ITS_COMMON)
+typedef struct GICv3ITSCommonClass GICv3ITSCommonClass;
+DECLARE_OBJ_CHECKERS(GICv3ITSState, GICv3ITSCommonClass,
+                     ARM_GICV3_ITS_COMMON, TYPE_ARM_GICV3_ITS_COMMON)
 
 struct GICv3ITSCommonClass {
     /*< private >*/
@@ -81,6 +79,5 @@ struct GICv3ITSCommonClass {
     void (*post_load)(GICv3ITSState *s);
 };
 
-typedef struct GICv3ITSCommonClass GICv3ITSCommonClass;
 
 #endif
diff --git a/include/hw/intc/armv7m_nvic.h b/include/hw/intc/armv7m_nvic.h
index a472c9b8f0..bb087b23c3 100644
--- a/include/hw/intc/armv7m_nvic.h
+++ b/include/hw/intc/armv7m_nvic.h
@@ -13,11 +13,13 @@
 #include "target/arm/cpu.h"
 #include "hw/sysbus.h"
 #include "hw/timer/armv7m_systick.h"
+#include "qom/object.h"
 
 #define TYPE_NVIC "armv7m_nvic"
 
-#define NVIC(obj) \
-    OBJECT_CHECK(NVICState, (obj), TYPE_NVIC)
+typedef struct NVICState NVICState;
+DECLARE_INSTANCE_CHECKER(NVICState, NVIC,
+                         TYPE_NVIC)
 
 /* Highest permitted number of exceptions (architectural limit) */
 #define NVIC_MAX_VECTORS 512
@@ -35,7 +37,7 @@ typedef struct VecInfo {
     uint8_t level; /* exceptions <=15 never set level */
 } VecInfo;
 
-typedef struct NVICState {
+struct NVICState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -88,6 +90,6 @@ typedef struct NVICState {
     qemu_irq sysresetreq;
 
     SysTickState systick[M_REG_NUM_BANKS];
-} NVICState;
+};
 
 #endif
diff --git a/include/hw/intc/aspeed_vic.h b/include/hw/intc/aspeed_vic.h
index 107ff17c3b..8f2e67db5a 100644
--- a/include/hw/intc/aspeed_vic.h
+++ b/include/hw/intc/aspeed_vic.h
@@ -14,13 +14,16 @@
 #define ASPEED_VIC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_VIC "aspeed.vic"
-#define ASPEED_VIC(obj) OBJECT_CHECK(AspeedVICState, (obj), TYPE_ASPEED_VIC)
+typedef struct AspeedVICState AspeedVICState;
+DECLARE_INSTANCE_CHECKER(AspeedVICState, ASPEED_VIC,
+                         TYPE_ASPEED_VIC)
 
 #define ASPEED_VIC_NR_IRQS 51
 
-typedef struct AspeedVICState {
+struct AspeedVICState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -43,6 +46,6 @@ typedef struct AspeedVICState {
 
     /* 0=low-sensitive/falling-edge, 1=high-sensitive/rising-edge */
     uint64_t event;
-} AspeedVICState;
+};
 
 #endif /* ASPEED_VIC_H */
diff --git a/include/hw/intc/bcm2835_ic.h b/include/hw/intc/bcm2835_ic.h
index 392ded1cb3..fd4a767845 100644
--- a/include/hw/intc/bcm2835_ic.h
+++ b/include/hw/intc/bcm2835_ic.h
@@ -9,14 +9,17 @@
 #define BCM2835_IC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_IC "bcm2835-ic"
-#define BCM2835_IC(obj) OBJECT_CHECK(BCM2835ICState, (obj), TYPE_BCM2835_IC)
+typedef struct BCM2835ICState BCM2835ICState;
+DECLARE_INSTANCE_CHECKER(BCM2835ICState, BCM2835_IC,
+                         TYPE_BCM2835_IC)
 
 #define BCM2835_IC_GPU_IRQ "gpu-irq"
 #define BCM2835_IC_ARM_IRQ "arm-irq"
 
-typedef struct BCM2835ICState {
+struct BCM2835ICState {
     /*< private >*/
     SysBusDevice busdev;
     /*< public >*/
@@ -30,6 +33,6 @@ typedef struct BCM2835ICState {
     uint8_t arm_irq_level, arm_irq_enable;
     bool fiq_enable;
     uint8_t fiq_select;
-} BCM2835ICState;
+};
 
 #endif
diff --git a/include/hw/intc/bcm2836_control.h b/include/hw/intc/bcm2836_control.h
index 2c22405686..f23292776e 100644
--- a/include/hw/intc/bcm2836_control.h
+++ b/include/hw/intc/bcm2836_control.h
@@ -17,16 +17,18 @@
 
 #include "hw/sysbus.h"
 #include "qemu/timer.h"
+#include "qom/object.h"
 
 /* 4 mailboxes per core, for 16 total */
 #define BCM2836_NCORES 4
 #define BCM2836_MBPERCORE 4
 
 #define TYPE_BCM2836_CONTROL "bcm2836-control"
-#define BCM2836_CONTROL(obj) \
-    OBJECT_CHECK(BCM2836ControlState, (obj), TYPE_BCM2836_CONTROL)
+typedef struct BCM2836ControlState BCM2836ControlState;
+DECLARE_INSTANCE_CHECKER(BCM2836ControlState, BCM2836_CONTROL,
+                         TYPE_BCM2836_CONTROL)
 
-typedef struct BCM2836ControlState {
+struct BCM2836ControlState {
     /*< private >*/
     SysBusDevice busdev;
     /*< public >*/
@@ -56,6 +58,6 @@ typedef struct BCM2836ControlState {
     /* outputs to CPU cores */
     qemu_irq irq[BCM2836_NCORES];
     qemu_irq fiq[BCM2836_NCORES];
-} BCM2836ControlState;
+};
 
 #endif
diff --git a/include/hw/intc/heathrow_pic.h b/include/hw/intc/heathrow_pic.h
index b163e27ab9..f8c9bc20ab 100644
--- a/include/hw/intc/heathrow_pic.h
+++ b/include/hw/intc/heathrow_pic.h
@@ -27,9 +27,12 @@
 #define HW_INTC_HEATHROW_PIC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_HEATHROW "heathrow"
-#define HEATHROW(obj) OBJECT_CHECK(HeathrowState, (obj), TYPE_HEATHROW)
+typedef struct HeathrowState HeathrowState;
+DECLARE_INSTANCE_CHECKER(HeathrowState, HEATHROW,
+                         TYPE_HEATHROW)
 
 typedef struct HeathrowPICState {
     uint32_t events;
@@ -38,13 +41,13 @@ typedef struct HeathrowPICState {
     uint32_t level_triggered;
 } HeathrowPICState;
 
-typedef struct HeathrowState {
+struct HeathrowState {
     SysBusDevice parent_obj;
 
     MemoryRegion mem;
     HeathrowPICState pics[2];
     qemu_irq irqs[1];
-} HeathrowState;
+};
 
 #define HEATHROW_NUM_IRQS 64
 
diff --git a/include/hw/intc/ibex_plic.h b/include/hw/intc/ibex_plic.h
index d8eb09b258..8da6b03805 100644
--- a/include/hw/intc/ibex_plic.h
+++ b/include/hw/intc/ibex_plic.h
@@ -20,12 +20,14 @@
 #define HW_IBEX_PLIC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IBEX_PLIC "ibex-plic"
-#define IBEX_PLIC(obj) \
-    OBJECT_CHECK(IbexPlicState, (obj), TYPE_IBEX_PLIC)
+typedef struct IbexPlicState IbexPlicState;
+DECLARE_INSTANCE_CHECKER(IbexPlicState, IBEX_PLIC,
+                         TYPE_IBEX_PLIC)
 
-typedef struct IbexPlicState {
+struct IbexPlicState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -59,6 +61,6 @@ typedef struct IbexPlicState {
     uint32_t threshold_base;
 
     uint32_t claim_base;
-} IbexPlicState;
+};
 
 #endif /* HW_IBEX_PLIC_H */
diff --git a/include/hw/intc/imx_avic.h b/include/hw/intc/imx_avic.h
index 1b80769018..621742533c 100644
--- a/include/hw/intc/imx_avic.h
+++ b/include/hw/intc/imx_avic.h
@@ -18,9 +18,12 @@
 #define IMX_AVIC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IMX_AVIC "imx.avic"
-#define IMX_AVIC(obj) OBJECT_CHECK(IMXAVICState, (obj), TYPE_IMX_AVIC)
+typedef struct IMXAVICState IMXAVICState;
+DECLARE_INSTANCE_CHECKER(IMXAVICState, IMX_AVIC,
+                         TYPE_IMX_AVIC)
 
 #define IMX_AVIC_NUM_IRQS 64
 
@@ -36,7 +39,7 @@
 #define PRIO_PER_WORD (sizeof(uint32_t) * 8 / 4)
 #define PRIO_WORDS (IMX_AVIC_NUM_IRQS/PRIO_PER_WORD)
 
-typedef struct IMXAVICState{
+struct IMXAVICState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -50,6 +53,6 @@ typedef struct IMXAVICState{
     qemu_irq irq;
     qemu_irq fiq;
     uint32_t prio[PRIO_WORDS]; /* Priorities are 4-bits each */
-} IMXAVICState;
+};
 
 #endif /* IMX_AVIC_H */
diff --git a/include/hw/intc/imx_gpcv2.h b/include/hw/intc/imx_gpcv2.h
index ed978b24bb..2d8075e527 100644
--- a/include/hw/intc/imx_gpcv2.h
+++ b/include/hw/intc/imx_gpcv2.h
@@ -2,21 +2,24 @@
 #define IMX_GPCV2_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 enum IMXGPCv2Registers {
     GPC_NUM        = 0xE00 / sizeof(uint32_t),
 };
 
-typedef struct IMXGPCv2State {
+struct IMXGPCv2State {
     /*< private >*/
     SysBusDevice parent_obj;
 
     /*< public >*/
     MemoryRegion iomem;
     uint32_t     regs[GPC_NUM];
-} IMXGPCv2State;
+};
+typedef struct IMXGPCv2State IMXGPCv2State;
 
 #define TYPE_IMX_GPCV2 "imx-gpcv2"
-#define IMX_GPCV2(obj) OBJECT_CHECK(IMXGPCv2State, (obj), TYPE_IMX_GPCV2)
+DECLARE_INSTANCE_CHECKER(IMXGPCv2State, IMX_GPCV2,
+                         TYPE_IMX_GPCV2)
 
 #endif /* IMX_GPCV2_H */
diff --git a/include/hw/intc/intc.h b/include/hw/intc/intc.h
index fb3e8e621f..7018f608ca 100644
--- a/include/hw/intc/intc.h
+++ b/include/hw/intc/intc.h
@@ -5,19 +5,16 @@
 
 #define TYPE_INTERRUPT_STATS_PROVIDER "intctrl"
 
-#define INTERRUPT_STATS_PROVIDER_CLASS(klass) \
-    OBJECT_CLASS_CHECK(InterruptStatsProviderClass, (klass), \
+typedef struct InterruptStatsProviderClass InterruptStatsProviderClass;
+DECLARE_CLASS_CHECKERS(InterruptStatsProviderClass, INTERRUPT_STATS_PROVIDER,
                        TYPE_INTERRUPT_STATS_PROVIDER)
-#define INTERRUPT_STATS_PROVIDER_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(InterruptStatsProviderClass, (obj), \
-                     TYPE_INTERRUPT_STATS_PROVIDER)
 #define INTERRUPT_STATS_PROVIDER(obj) \
     INTERFACE_CHECK(InterruptStatsProvider, (obj), \
                     TYPE_INTERRUPT_STATS_PROVIDER)
 
 typedef struct InterruptStatsProvider InterruptStatsProvider;
 
-typedef struct InterruptStatsProviderClass {
+struct InterruptStatsProviderClass {
     InterfaceClass parent;
 
     /* The returned pointer and statistics must remain valid until
@@ -26,6 +23,6 @@ typedef struct InterruptStatsProviderClass {
     bool (*get_statistics)(InterruptStatsProvider *obj, uint64_t **irq_counts,
                            unsigned int *nb_irqs);
     void (*print_info)(InterruptStatsProvider *obj, Monitor *mon);
-} InterruptStatsProviderClass;
+};
 
 #endif
diff --git a/include/hw/intc/mips_gic.h b/include/hw/intc/mips_gic.h
index 8428287bf9..65aa3a9a5e 100644
--- a/include/hw/intc/mips_gic.h
+++ b/include/hw/intc/mips_gic.h
@@ -15,6 +15,7 @@
 #include "hw/timer/mips_gictimer.h"
 #include "hw/sysbus.h"
 #include "cpu.h"
+#include "qom/object.h"
 /*
  * GIC Specific definitions
  */
@@ -170,13 +171,14 @@
 #define GIC_LOCAL_INT_WD        0 /* GIC watchdog */
 
 #define TYPE_MIPS_GIC "mips-gic"
-#define MIPS_GIC(obj) OBJECT_CHECK(MIPSGICState, (obj), TYPE_MIPS_GIC)
+typedef struct MIPSGICState MIPSGICState;
+DECLARE_INSTANCE_CHECKER(MIPSGICState, MIPS_GIC,
+                         TYPE_MIPS_GIC)
 
 /* Support up to 32 VPs and 256 IRQs */
 #define GIC_MAX_VPS             32
 #define GIC_MAX_INTRS           256
 
-typedef struct MIPSGICState MIPSGICState;
 typedef struct MIPSGICIRQState MIPSGICIRQState;
 typedef struct MIPSGICVPState MIPSGICVPState;
 
diff --git a/include/hw/intc/realview_gic.h b/include/hw/intc/realview_gic.h
index 1783ea11b9..a93ace87c8 100644
--- a/include/hw/intc/realview_gic.h
+++ b/include/hw/intc/realview_gic.h
@@ -12,17 +12,19 @@
 
 #include "hw/sysbus.h"
 #include "hw/intc/arm_gic.h"
+#include "qom/object.h"
 
 #define TYPE_REALVIEW_GIC "realview_gic"
-#define REALVIEW_GIC(obj) \
-    OBJECT_CHECK(RealViewGICState, (obj), TYPE_REALVIEW_GIC)
+typedef struct RealViewGICState RealViewGICState;
+DECLARE_INSTANCE_CHECKER(RealViewGICState, REALVIEW_GIC,
+                         TYPE_REALVIEW_GIC)
 
-typedef struct RealViewGICState {
+struct RealViewGICState {
     SysBusDevice parent_obj;
 
     MemoryRegion container;
 
     GICState gic;
-} RealViewGICState;
+};
 
 #endif
diff --git a/include/hw/intc/rx_icu.h b/include/hw/intc/rx_icu.h
index 7176015cd9..ec02df35e3 100644
--- a/include/hw/intc/rx_icu.h
+++ b/include/hw/intc/rx_icu.h
@@ -22,6 +22,7 @@
 #define HW_INTC_RX_ICU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 enum TRG_MODE {
     TRG_LEVEL = 0,
@@ -71,6 +72,7 @@ struct RXICUState {
 typedef struct RXICUState RXICUState;
 
 #define TYPE_RX_ICU "rx-icu"
-#define RX_ICU(obj) OBJECT_CHECK(RXICUState, (obj), TYPE_RX_ICU)
+DECLARE_INSTANCE_CHECKER(RXICUState, RX_ICU,
+                         TYPE_RX_ICU)
 
 #endif /* RX_ICU_H */
diff --git a/include/hw/intc/xlnx-pmu-iomod-intc.h b/include/hw/intc/xlnx-pmu-iomod-intc.h
index 0bd118884a..7a560e97af 100644
--- a/include/hw/intc/xlnx-pmu-iomod-intc.h
+++ b/include/hw/intc/xlnx-pmu-iomod-intc.h
@@ -27,16 +27,18 @@
 
 #include "hw/sysbus.h"
 #include "hw/register.h"
+#include "qom/object.h"
 
 #define TYPE_XLNX_PMU_IO_INTC "xlnx.pmu_io_intc"
 
-#define XLNX_PMU_IO_INTC(obj) \
-     OBJECT_CHECK(XlnxPMUIOIntc, (obj), TYPE_XLNX_PMU_IO_INTC)
+typedef struct XlnxPMUIOIntc XlnxPMUIOIntc;
+DECLARE_INSTANCE_CHECKER(XlnxPMUIOIntc, XLNX_PMU_IO_INTC,
+                         TYPE_XLNX_PMU_IO_INTC)
 
 /* This is R_PIT3_CONTROL + 1 */
 #define XLNXPMUIOINTC_R_MAX (0x78 + 1)
 
-typedef struct XlnxPMUIOIntc {
+struct XlnxPMUIOIntc {
     SysBusDevice parent_obj;
     MemoryRegion iomem;
 
@@ -52,6 +54,6 @@ typedef struct XlnxPMUIOIntc {
 
     uint32_t regs[XLNXPMUIOINTC_R_MAX];
     RegisterInfo regs_info[XLNXPMUIOINTC_R_MAX];
-} XlnxPMUIOIntc;
+};
 
 #endif /* HW_INTC_XLNX_PMU_IOMOD_INTC_H */
diff --git a/include/hw/intc/xlnx-zynqmp-ipi.h b/include/hw/intc/xlnx-zynqmp-ipi.h
index 866c719c6f..29c48db307 100644
--- a/include/hw/intc/xlnx-zynqmp-ipi.h
+++ b/include/hw/intc/xlnx-zynqmp-ipi.h
@@ -27,18 +27,20 @@
 
 #include "hw/sysbus.h"
 #include "hw/register.h"
+#include "qom/object.h"
 
 #define TYPE_XLNX_ZYNQMP_IPI "xlnx.zynqmp_ipi"
 
-#define XLNX_ZYNQMP_IPI(obj) \
-     OBJECT_CHECK(XlnxZynqMPIPI, (obj), TYPE_XLNX_ZYNQMP_IPI)
+typedef struct XlnxZynqMPIPI XlnxZynqMPIPI;
+DECLARE_INSTANCE_CHECKER(XlnxZynqMPIPI, XLNX_ZYNQMP_IPI,
+                         TYPE_XLNX_ZYNQMP_IPI)
 
 /* This is R_IPI_IDR + 1 */
 #define R_XLNX_ZYNQMP_IPI_MAX ((0x1c / 4) + 1)
 
 #define NUM_IPIS 11
 
-typedef struct XlnxZynqMPIPI {
+struct XlnxZynqMPIPI {
     /* Private */
     SysBusDevice parent_obj;
 
@@ -51,6 +53,6 @@ typedef struct XlnxZynqMPIPI {
 
     uint32_t regs[R_XLNX_ZYNQMP_IPI_MAX];
     RegisterInfo regs_info[R_XLNX_ZYNQMP_IPI_MAX];
-} XlnxZynqMPIPI;
+};
 
 #endif /* XLNX_ZYNQMP_IPI_H */
diff --git a/include/hw/ipack/ipack.h b/include/hw/ipack/ipack.h
index 1c07969bc9..a59a487853 100644
--- a/include/hw/ipack/ipack.h
+++ b/include/hw/ipack/ipack.h
@@ -12,11 +12,13 @@
 #define QEMU_IPACK_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 typedef struct IPackBus IPackBus;
 
 #define TYPE_IPACK_BUS "IndustryPack"
-#define IPACK_BUS(obj) OBJECT_CHECK(IPackBus, (obj), TYPE_IPACK_BUS)
+DECLARE_INSTANCE_CHECKER(IPackBus, IPACK_BUS,
+                         TYPE_IPACK_BUS)
 
 struct IPackBus {
     /*< private >*/
@@ -28,16 +30,10 @@ struct IPackBus {
     qemu_irq_handler set_irq;
 };
 
-typedef struct IPackDevice IPackDevice;
-typedef struct IPackDeviceClass IPackDeviceClass;
 
 #define TYPE_IPACK_DEVICE "ipack-device"
-#define IPACK_DEVICE(obj) \
-     OBJECT_CHECK(IPackDevice, (obj), TYPE_IPACK_DEVICE)
-#define IPACK_DEVICE_CLASS(klass)                                        \
-     OBJECT_CLASS_CHECK(IPackDeviceClass, (klass), TYPE_IPACK_DEVICE)
-#define IPACK_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(IPackDeviceClass, (obj), TYPE_IPACK_DEVICE)
+OBJECT_DECLARE_TYPE(IPackDevice, IPackDeviceClass,
+                    ipack_device, IPACK_DEVICE)
 
 struct IPackDeviceClass {
     /*< private >*/
diff --git a/include/hw/ipmi/ipmi.h b/include/hw/ipmi/ipmi.h
index c1efdaa4cb..3fa5a4abd0 100644
--- a/include/hw/ipmi/ipmi.h
+++ b/include/hw/ipmi/ipmi.h
@@ -27,6 +27,7 @@
 
 #include "exec/memory.h"
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define MAX_IPMI_MSG_SIZE 300
 
@@ -110,14 +111,13 @@ uint32_t ipmi_next_uuid(void);
 #define TYPE_IPMI_INTERFACE "ipmi-interface"
 #define IPMI_INTERFACE(obj) \
      INTERFACE_CHECK(IPMIInterface, (obj), TYPE_IPMI_INTERFACE)
-#define IPMI_INTERFACE_CLASS(class) \
-     OBJECT_CLASS_CHECK(IPMIInterfaceClass, (class), TYPE_IPMI_INTERFACE)
-#define IPMI_INTERFACE_GET_CLASS(class) \
-     OBJECT_GET_CLASS(IPMIInterfaceClass, (class), TYPE_IPMI_INTERFACE)
+typedef struct IPMIInterfaceClass IPMIInterfaceClass;
+DECLARE_CLASS_CHECKERS(IPMIInterfaceClass, IPMI_INTERFACE,
+                       TYPE_IPMI_INTERFACE)
 
 typedef struct IPMIInterface IPMIInterface;
 
-typedef struct IPMIInterfaceClass {
+struct IPMIInterfaceClass {
     InterfaceClass parent;
 
     /*
@@ -170,28 +170,24 @@ typedef struct IPMIInterfaceClass {
      * Return the firmware info for a device.
      */
     void (*get_fwinfo)(struct IPMIInterface *s, IPMIFwInfo *info);
-} IPMIInterfaceClass;
+};
 
 /*
  * Define a BMC simulator (or perhaps a connection to a real BMC)
  */
 #define TYPE_IPMI_BMC "ipmi-bmc"
-#define IPMI_BMC(obj) \
-     OBJECT_CHECK(IPMIBmc, (obj), TYPE_IPMI_BMC)
-#define IPMI_BMC_CLASS(obj_class) \
-     OBJECT_CLASS_CHECK(IPMIBmcClass, (obj_class), TYPE_IPMI_BMC)
-#define IPMI_BMC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(IPMIBmcClass, (obj), TYPE_IPMI_BMC)
-
-typedef struct IPMIBmc {
+OBJECT_DECLARE_TYPE(IPMIBmc, IPMIBmcClass,
+                    ipmi_bmc, IPMI_BMC)
+
+struct IPMIBmc {
     DeviceState parent;
 
     uint8_t slave_addr;
 
     IPMIInterface *intf;
-} IPMIBmc;
+};
 
-typedef struct IPMIBmcClass {
+struct IPMIBmcClass {
     DeviceClass parent;
 
     /* Called when the system resets to report to the bmc. */
@@ -204,7 +200,7 @@ typedef struct IPMIBmcClass {
                            uint8_t *cmd, unsigned int cmd_len,
                            unsigned int max_cmd_len,
                            uint8_t msg_id);
-} IPMIBmcClass;
+};
 
 /*
  * Add a link property to obj that points to a BMC.
@@ -268,10 +264,10 @@ int ipmi_bmc_sdr_find(IPMIBmc *b, uint16_t recid,
 void ipmi_bmc_gen_event(IPMIBmc *b, uint8_t *evt, bool log);
 
 #define TYPE_IPMI_BMC_SIMULATOR "ipmi-bmc-sim"
-#define IPMI_BMC_SIMULATOR(obj) OBJECT_CHECK(IPMIBmcSim, (obj), \
-                                        TYPE_IPMI_BMC_SIMULATOR)
-
 typedef struct IPMIBmcSim IPMIBmcSim;
+DECLARE_INSTANCE_CHECKER(IPMIBmcSim, IPMI_BMC_SIMULATOR,
+                         TYPE_IPMI_BMC_SIMULATOR)
+
 
 typedef struct RspBuffer {
     uint8_t buffer[MAX_IPMI_MSG_SIZE];
diff --git a/include/hw/isa/i8259_internal.h b/include/hw/isa/i8259_internal.h
index 861d70d8f8..cd050bb9f2 100644
--- a/include/hw/isa/i8259_internal.h
+++ b/include/hw/isa/i8259_internal.h
@@ -28,24 +28,21 @@
 #include "hw/isa/isa.h"
 #include "hw/intc/intc.h"
 #include "hw/intc/i8259.h"
+#include "qom/object.h"
 
 typedef struct PICCommonState PICCommonState;
 
 #define TYPE_PIC_COMMON "pic-common"
-#define PIC_COMMON(obj) \
-     OBJECT_CHECK(PICCommonState, (obj), TYPE_PIC_COMMON)
-#define PIC_COMMON_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PICCommonClass, (klass), TYPE_PIC_COMMON)
-#define PIC_COMMON_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PICCommonClass, (obj), TYPE_PIC_COMMON)
+typedef struct PICCommonClass PICCommonClass;
+DECLARE_OBJ_CHECKERS(PICCommonState, PICCommonClass,
+                     PIC_COMMON, TYPE_PIC_COMMON)
 
-typedef struct PICCommonClass
-{
+struct PICCommonClass {
     ISADeviceClass parent_class;
 
     void (*pre_save)(PICCommonState *s);
     void (*post_load)(PICCommonState *s);
-} PICCommonClass;
+};
 
 struct PICCommonState {
     ISADevice parent_obj;
diff --git a/include/hw/isa/isa.h b/include/hw/isa/isa.h
index 52b61eed88..ddb6a2d168 100644
--- a/include/hw/isa/isa.h
+++ b/include/hw/isa/isa.h
@@ -6,19 +6,18 @@
 #include "exec/memory.h"
 #include "exec/ioport.h"
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define ISA_NUM_IRQS 16
 
 #define TYPE_ISA_DEVICE "isa-device"
-#define ISA_DEVICE(obj) \
-     OBJECT_CHECK(ISADevice, (obj), TYPE_ISA_DEVICE)
-#define ISA_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(ISADeviceClass, (klass), TYPE_ISA_DEVICE)
-#define ISA_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(ISADeviceClass, (obj), TYPE_ISA_DEVICE)
+typedef struct ISADeviceClass ISADeviceClass;
+DECLARE_OBJ_CHECKERS(ISADevice, ISADeviceClass,
+                     ISA_DEVICE, TYPE_ISA_DEVICE)
 
 #define TYPE_ISA_BUS "ISA"
-#define ISA_BUS(obj) OBJECT_CHECK(ISABus, (obj), TYPE_ISA_BUS)
+DECLARE_INSTANCE_CHECKER(ISABus, ISA_BUS,
+                         TYPE_ISA_BUS)
 
 #define TYPE_APPLE_SMC "isa-applesmc"
 #define APPLESMC_MAX_DATA_LENGTH       32
@@ -36,10 +35,9 @@ static inline uint16_t applesmc_port(void)
 
 #define TYPE_ISADMA "isa-dma"
 
-#define ISADMA_CLASS(klass) \
-    OBJECT_CLASS_CHECK(IsaDmaClass, (klass), TYPE_ISADMA)
-#define ISADMA_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(IsaDmaClass, (obj), TYPE_ISADMA)
+typedef struct IsaDmaClass IsaDmaClass;
+DECLARE_CLASS_CHECKERS(IsaDmaClass, ISADMA,
+                       TYPE_ISADMA)
 #define ISADMA(obj) \
     INTERFACE_CHECK(IsaDma, (obj), TYPE_ISADMA)
 
@@ -53,7 +51,7 @@ typedef enum {
 typedef int (*IsaDmaTransferHandler)(void *opaque, int nchan, int pos,
                                      int size);
 
-typedef struct IsaDmaClass {
+struct IsaDmaClass {
     InterfaceClass parent;
 
     bool (*has_autoinitialization)(IsaDma *obj, int nchan);
@@ -65,12 +63,12 @@ typedef struct IsaDmaClass {
     void (*register_channel)(IsaDma *obj, int nchan,
                              IsaDmaTransferHandler transfer_handler,
                              void *opaque);
-} IsaDmaClass;
+};
 
-typedef struct ISADeviceClass {
+struct ISADeviceClass {
     DeviceClass parent_class;
     void (*build_aml)(ISADevice *dev, Aml *scope);
-} ISADeviceClass;
+};
 
 struct ISABus {
     /*< private >*/
diff --git a/include/hw/isa/pc87312.h b/include/hw/isa/pc87312.h
index e16263d4b1..da8dc5ddf5 100644
--- a/include/hw/isa/pc87312.h
+++ b/include/hw/isa/pc87312.h
@@ -26,12 +26,15 @@
 #define QEMU_PC87312_H
 
 #include "hw/isa/superio.h"
+#include "qom/object.h"
 
 
-#define TYPE_PC87312_SUPERIO "pc87312"
-#define PC87312(obj) OBJECT_CHECK(PC87312State, (obj), TYPE_PC87312_SUPERIO)
+#define TYPE_PC87312 "pc87312"
+typedef struct PC87312State PC87312State;
+DECLARE_INSTANCE_CHECKER(PC87312State, PC87312,
+                         TYPE_PC87312)
 
-typedef struct PC87312State {
+struct PC87312State {
     /*< private >*/
     ISASuperIODevice parent_dev;
     /*< public >*/
@@ -49,7 +52,7 @@ typedef struct PC87312State {
     uint8_t selected_index;
 
     uint8_t regs[3];
-} PC87312State;
+};
 
 
 #endif
diff --git a/include/hw/isa/superio.h b/include/hw/isa/superio.h
index 147cc0a7b7..b9f5c19155 100644
--- a/include/hw/isa/superio.h
+++ b/include/hw/isa/superio.h
@@ -12,18 +12,17 @@
 
 #include "sysemu/sysemu.h"
 #include "hw/isa/isa.h"
+#include "qom/object.h"
 
 #define TYPE_ISA_SUPERIO "isa-superio"
-#define ISA_SUPERIO(obj) \
-    OBJECT_CHECK(ISASuperIODevice, (obj), TYPE_ISA_SUPERIO)
-#define ISA_SUPERIO_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(ISASuperIOClass, (obj), TYPE_ISA_SUPERIO)
-#define ISA_SUPERIO_CLASS(klass) \
-    OBJECT_CLASS_CHECK(ISASuperIOClass, (klass), TYPE_ISA_SUPERIO)
+typedef struct ISASuperIOClass ISASuperIOClass;
+typedef struct ISASuperIODevice ISASuperIODevice;
+DECLARE_OBJ_CHECKERS(ISASuperIODevice, ISASuperIOClass,
+                     ISA_SUPERIO, TYPE_ISA_SUPERIO)
 
 #define SUPERIO_MAX_SERIAL_PORTS 4
 
-typedef struct ISASuperIODevice {
+struct ISASuperIODevice {
     /*< private >*/
     ISADevice parent_obj;
     /*< public >*/
@@ -33,7 +32,7 @@ typedef struct ISASuperIODevice {
     ISADevice *floppy;
     ISADevice *kbc;
     ISADevice *ide;
-} ISASuperIODevice;
+};
 
 typedef struct ISASuperIOFuncs {
     size_t count;
@@ -43,7 +42,7 @@ typedef struct ISASuperIOFuncs {
     unsigned int (*get_dma)(ISASuperIODevice *sio, uint8_t index);
 } ISASuperIOFuncs;
 
-typedef struct ISASuperIOClass {
+struct ISASuperIOClass {
     /*< private >*/
     ISADeviceClass parent_class;
     /*< public >*/
@@ -53,7 +52,7 @@ typedef struct ISASuperIOClass {
     ISASuperIOFuncs serial;
     ISASuperIOFuncs floppy;
     ISASuperIOFuncs ide;
-} ISASuperIOClass;
+};
 
 #define TYPE_FDC37M81X_SUPERIO  "fdc37m81x-superio"
 #define TYPE_SMC37C669_SUPERIO  "smc37c669-superio"
diff --git a/include/hw/m68k/mcf_fec.h b/include/hw/m68k/mcf_fec.h
index c09e33a57c..840c5bbf53 100644
--- a/include/hw/m68k/mcf_fec.h
+++ b/include/hw/m68k/mcf_fec.h
@@ -9,10 +9,12 @@
 
 #ifndef HW_M68K_MCF_FEC_H
 #define HW_M68K_MCF_FEC_H
+#include "qom/object.h"
 
 #define TYPE_MCF_FEC_NET "mcf-fec"
 typedef struct mcf_fec_state mcf_fec_state;
-#define MCF_FEC_NET(obj) OBJECT_CHECK(mcf_fec_state, (obj), TYPE_MCF_FEC_NET)
+DECLARE_INSTANCE_CHECKER(mcf_fec_state, MCF_FEC_NET,
+                         TYPE_MCF_FEC_NET)
 
 #define FEC_NUM_IRQ 13
 
diff --git a/include/hw/mem/memory-device.h b/include/hw/mem/memory-device.h
index 04476acb8f..cde52e83c9 100644
--- a/include/hw/mem/memory-device.h
+++ b/include/hw/mem/memory-device.h
@@ -19,10 +19,9 @@
 
 #define TYPE_MEMORY_DEVICE "memory-device"
 
-#define MEMORY_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(MemoryDeviceClass, (klass), TYPE_MEMORY_DEVICE)
-#define MEMORY_DEVICE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(MemoryDeviceClass, (obj), TYPE_MEMORY_DEVICE)
+typedef struct MemoryDeviceClass MemoryDeviceClass;
+DECLARE_CLASS_CHECKERS(MemoryDeviceClass, MEMORY_DEVICE,
+                       TYPE_MEMORY_DEVICE)
 #define MEMORY_DEVICE(obj) \
      INTERFACE_CHECK(MemoryDeviceState, (obj), TYPE_MEMORY_DEVICE)
 
@@ -43,7 +42,7 @@ typedef struct MemoryDeviceState MemoryDeviceState;
  * be provided. Scattered memory regions are not supported for single
  * devices.
  */
-typedef struct MemoryDeviceClass {
+struct MemoryDeviceClass {
     /* private */
     InterfaceClass parent_class;
 
@@ -94,7 +93,7 @@ typedef struct MemoryDeviceClass {
      */
     void (*fill_device_info)(const MemoryDeviceState *md,
                              MemoryDeviceInfo *info);
-} MemoryDeviceClass;
+};
 
 MemoryDeviceInfoList *qmp_memory_device_list(void);
 uint64_t get_plugged_memory_size(void);
diff --git a/include/hw/mem/nvdimm.h b/include/hw/mem/nvdimm.h
index b67a1aedf6..19e3d3092d 100644
--- a/include/hw/mem/nvdimm.h
+++ b/include/hw/mem/nvdimm.h
@@ -27,6 +27,7 @@
 #include "hw/acpi/bios-linker-loader.h"
 #include "qemu/uuid.h"
 #include "hw/acpi/aml-build.h"
+#include "qom/object.h"
 
 #define NVDIMM_DEBUG 0
 #define nvdimm_debug(fmt, ...)                                \
@@ -45,10 +46,10 @@
 #define MIN_NAMESPACE_LABEL_SIZE      (128UL << 10)
 
 #define TYPE_NVDIMM      "nvdimm"
-#define NVDIMM(obj)      OBJECT_CHECK(NVDIMMDevice, (obj), TYPE_NVDIMM)
-#define NVDIMM_CLASS(oc) OBJECT_CLASS_CHECK(NVDIMMClass, (oc), TYPE_NVDIMM)
-#define NVDIMM_GET_CLASS(obj) OBJECT_GET_CLASS(NVDIMMClass, (obj), \
-                                               TYPE_NVDIMM)
+typedef struct NVDIMMClass NVDIMMClass;
+typedef struct NVDIMMDevice NVDIMMDevice;
+DECLARE_OBJ_CHECKERS(NVDIMMDevice, NVDIMMClass,
+                     NVDIMM, TYPE_NVDIMM)
 
 #define NVDIMM_LABEL_SIZE_PROP "label-size"
 #define NVDIMM_UUID_PROP       "uuid"
@@ -92,7 +93,6 @@ struct NVDIMMDevice {
      */
     QemuUUID uuid;
 };
-typedef struct NVDIMMDevice NVDIMMDevice;
 
 struct NVDIMMClass {
     /* private */
@@ -107,7 +107,6 @@ struct NVDIMMClass {
     void (*write_label_data)(NVDIMMDevice *nvdimm, const void *buf,
                              uint64_t size, uint64_t offset);
 };
-typedef struct NVDIMMClass NVDIMMClass;
 
 #define NVDIMM_DSM_MEM_FILE     "etc/acpi/nvdimm-mem"
 
diff --git a/include/hw/mem/pc-dimm.h b/include/hw/mem/pc-dimm.h
index 289edc0f3d..1d570defc9 100644
--- a/include/hw/mem/pc-dimm.h
+++ b/include/hw/mem/pc-dimm.h
@@ -18,14 +18,11 @@
 
 #include "exec/memory.h"
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define TYPE_PC_DIMM "pc-dimm"
-#define PC_DIMM(obj) \
-    OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM)
-#define PC_DIMM_CLASS(oc) \
-    OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM)
-#define PC_DIMM_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM)
+OBJECT_DECLARE_TYPE(PCDIMMDevice, PCDIMMDeviceClass,
+                    pc_dimm, PC_DIMM)
 
 #define PC_DIMM_ADDR_PROP "addr"
 #define PC_DIMM_SLOT_PROP "slot"
@@ -44,7 +41,7 @@
  *        Default value: -1, means that slot is auto-allocated.
  * @hostmem: host memory backend providing memory for @PCDIMMDevice
  */
-typedef struct PCDIMMDevice {
+struct PCDIMMDevice {
     /* private */
     DeviceState parent_obj;
 
@@ -53,7 +50,7 @@ typedef struct PCDIMMDevice {
     uint32_t node;
     int32_t slot;
     HostMemoryBackend *hostmem;
-} PCDIMMDevice;
+};
 
 /**
  * PCDIMMDeviceClass:
@@ -63,7 +60,7 @@ typedef struct PCDIMMDevice {
  * memory of @dimm should be kept during live migration. Will not fail
  * after the device was realized.
  */
-typedef struct PCDIMMDeviceClass {
+struct PCDIMMDeviceClass {
     /* private */
     DeviceClass parent_class;
 
@@ -71,7 +68,7 @@ typedef struct PCDIMMDeviceClass {
     void (*realize)(PCDIMMDevice *dimm, Error **errp);
     MemoryRegion *(*get_vmstate_memory_region)(PCDIMMDevice *dimm,
                                                Error **errp);
-} PCDIMMDeviceClass;
+};
 
 void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine,
                       const uint64_t *legacy_align, Error **errp);
diff --git a/include/hw/mips/cps.h b/include/hw/mips/cps.h
index a941c55f27..849e640570 100644
--- a/include/hw/mips/cps.h
+++ b/include/hw/mips/cps.h
@@ -26,11 +26,14 @@
 #include "hw/misc/mips_cpc.h"
 #include "hw/misc/mips_itu.h"
 #include "target/mips/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_MIPS_CPS "mips-cps"
-#define MIPS_CPS(obj) OBJECT_CHECK(MIPSCPSState, (obj), TYPE_MIPS_CPS)
+typedef struct MIPSCPSState MIPSCPSState;
+DECLARE_INSTANCE_CHECKER(MIPSCPSState, MIPS_CPS,
+                         TYPE_MIPS_CPS)
 
-typedef struct MIPSCPSState {
+struct MIPSCPSState {
     SysBusDevice parent_obj;
 
     uint32_t num_vp;
@@ -42,7 +45,7 @@ typedef struct MIPSCPSState {
     MIPSGICState gic;
     MIPSCPCState cpc;
     MIPSITUState itu;
-} MIPSCPSState;
+};
 
 qemu_irq get_cps_irq(MIPSCPSState *cps, int pin_number);
 
diff --git a/include/hw/misc/a9scu.h b/include/hw/misc/a9scu.h
index efb0c305c2..fd1b92e923 100644
--- a/include/hw/misc/a9scu.h
+++ b/include/hw/misc/a9scu.h
@@ -11,10 +11,11 @@
 #define HW_MISC_A9SCU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 /* A9MP private memory region.  */
 
-typedef struct A9SCUState {
+struct A9SCUState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -23,9 +24,11 @@ typedef struct A9SCUState {
     uint32_t control;
     uint32_t status;
     uint32_t num_cpu;
-} A9SCUState;
+};
+typedef struct A9SCUState A9SCUState;
 
 #define TYPE_A9_SCU "a9-scu"
-#define A9_SCU(obj) OBJECT_CHECK(A9SCUState, (obj), TYPE_A9_SCU)
+DECLARE_INSTANCE_CHECKER(A9SCUState, A9_SCU,
+                         TYPE_A9_SCU)
 
 #endif
diff --git a/include/hw/misc/allwinner-cpucfg.h b/include/hw/misc/allwinner-cpucfg.h
index 2c3693a8be..058514de15 100644
--- a/include/hw/misc/allwinner-cpucfg.h
+++ b/include/hw/misc/allwinner-cpucfg.h
@@ -29,15 +29,16 @@
  */
 
 #define TYPE_AW_CPUCFG   "allwinner-cpucfg"
-#define AW_CPUCFG(obj) \
-    OBJECT_CHECK(AwCpuCfgState, (obj), TYPE_AW_CPUCFG)
+typedef struct AwCpuCfgState AwCpuCfgState;
+DECLARE_INSTANCE_CHECKER(AwCpuCfgState, AW_CPUCFG,
+                         TYPE_AW_CPUCFG)
 
 /** @} */
 
 /**
  * Allwinner CPU Configuration Module instance state
  */
-typedef struct AwCpuCfgState {
+struct AwCpuCfgState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -47,6 +48,6 @@ typedef struct AwCpuCfgState {
     uint32_t super_standby;
     uint32_t entry_addr;
 
-} AwCpuCfgState;
+};
 
 #endif /* HW_MISC_ALLWINNER_CPUCFG_H */
diff --git a/include/hw/misc/allwinner-h3-ccu.h b/include/hw/misc/allwinner-h3-ccu.h
index eec59649f3..05f5c7bd8e 100644
--- a/include/hw/misc/allwinner-h3-ccu.h
+++ b/include/hw/misc/allwinner-h3-ccu.h
@@ -42,15 +42,16 @@
  */
 
 #define TYPE_AW_H3_CCU    "allwinner-h3-ccu"
-#define AW_H3_CCU(obj) \
-    OBJECT_CHECK(AwH3ClockCtlState, (obj), TYPE_AW_H3_CCU)
+typedef struct AwH3ClockCtlState AwH3ClockCtlState;
+DECLARE_INSTANCE_CHECKER(AwH3ClockCtlState, AW_H3_CCU,
+                         TYPE_AW_H3_CCU)
 
 /** @} */
 
 /**
  * Allwinner H3 CCU object instance state.
  */
-typedef struct AwH3ClockCtlState {
+struct AwH3ClockCtlState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -61,6 +62,6 @@ typedef struct AwH3ClockCtlState {
     /** Array of hardware registers */
     uint32_t regs[AW_H3_CCU_REGS_NUM];
 
-} AwH3ClockCtlState;
+};
 
 #endif /* HW_MISC_ALLWINNER_H3_CCU_H */
diff --git a/include/hw/misc/allwinner-h3-dramc.h b/include/hw/misc/allwinner-h3-dramc.h
index bacdf236b7..60a13a6958 100644
--- a/include/hw/misc/allwinner-h3-dramc.h
+++ b/include/hw/misc/allwinner-h3-dramc.h
@@ -58,15 +58,16 @@
  */
 
 #define TYPE_AW_H3_DRAMC "allwinner-h3-dramc"
-#define AW_H3_DRAMC(obj) \
-    OBJECT_CHECK(AwH3DramCtlState, (obj), TYPE_AW_H3_DRAMC)
+typedef struct AwH3DramCtlState AwH3DramCtlState;
+DECLARE_INSTANCE_CHECKER(AwH3DramCtlState, AW_H3_DRAMC,
+                         TYPE_AW_H3_DRAMC)
 
 /** @} */
 
 /**
  * Allwinner H3 SDRAM Controller object instance state.
  */
-typedef struct AwH3DramCtlState {
+struct AwH3DramCtlState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -101,6 +102,6 @@ typedef struct AwH3DramCtlState {
 
     /** @} */
 
-} AwH3DramCtlState;
+};
 
 #endif /* HW_MISC_ALLWINNER_H3_DRAMC_H */
diff --git a/include/hw/misc/allwinner-h3-sysctrl.h b/include/hw/misc/allwinner-h3-sysctrl.h
index af4119e026..50baa8eb07 100644
--- a/include/hw/misc/allwinner-h3-sysctrl.h
+++ b/include/hw/misc/allwinner-h3-sysctrl.h
@@ -43,15 +43,16 @@
  */
 
 #define TYPE_AW_H3_SYSCTRL    "allwinner-h3-sysctrl"
-#define AW_H3_SYSCTRL(obj) \
-    OBJECT_CHECK(AwH3SysCtrlState, (obj), TYPE_AW_H3_SYSCTRL)
+typedef struct AwH3SysCtrlState AwH3SysCtrlState;
+DECLARE_INSTANCE_CHECKER(AwH3SysCtrlState, AW_H3_SYSCTRL,
+                         TYPE_AW_H3_SYSCTRL)
 
 /** @} */
 
 /**
  * Allwinner H3 System Control object instance state
  */
-typedef struct AwH3SysCtrlState {
+struct AwH3SysCtrlState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -62,6 +63,6 @@ typedef struct AwH3SysCtrlState {
     /** Array of hardware registers */
     uint32_t regs[AW_H3_SYSCTRL_REGS_NUM];
 
-} AwH3SysCtrlState;
+};
 
 #endif /* HW_MISC_ALLWINNER_H3_SYSCTRL_H */
diff --git a/include/hw/misc/allwinner-sid.h b/include/hw/misc/allwinner-sid.h
index 4c1fa4762b..b8e83bb7ce 100644
--- a/include/hw/misc/allwinner-sid.h
+++ b/include/hw/misc/allwinner-sid.h
@@ -30,15 +30,16 @@
  */
 
 #define TYPE_AW_SID    "allwinner-sid"
-#define AW_SID(obj) \
-    OBJECT_CHECK(AwSidState, (obj), TYPE_AW_SID)
+typedef struct AwSidState AwSidState;
+DECLARE_INSTANCE_CHECKER(AwSidState, AW_SID,
+                         TYPE_AW_SID)
 
 /** @} */
 
 /**
  * Allwinner Security ID object instance state
  */
-typedef struct AwSidState {
+struct AwSidState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -55,6 +56,6 @@ typedef struct AwSidState {
     /** Stores the emulated device identifier */
     QemuUUID identifier;
 
-} AwSidState;
+};
 
 #endif /* HW_MISC_ALLWINNER_SID_H */
diff --git a/include/hw/misc/arm11scu.h b/include/hw/misc/arm11scu.h
index 5ad0f3d339..71b4bc9a22 100644
--- a/include/hw/misc/arm11scu.h
+++ b/include/hw/misc/arm11scu.h
@@ -12,11 +12,14 @@
 #define HW_MISC_ARM11SCU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ARM11_SCU "arm11-scu"
-#define ARM11_SCU(obj) OBJECT_CHECK(ARM11SCUState, (obj), TYPE_ARM11_SCU)
+typedef struct ARM11SCUState ARM11SCUState;
+DECLARE_INSTANCE_CHECKER(ARM11SCUState, ARM11_SCU,
+                         TYPE_ARM11_SCU)
 
-typedef struct ARM11SCUState {
+struct ARM11SCUState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -24,6 +27,6 @@ typedef struct ARM11SCUState {
     uint32_t control;
     uint32_t num_cpu;
     MemoryRegion iomem;
-} ARM11SCUState;
+};
 
 #endif
diff --git a/include/hw/misc/armsse-cpuid.h b/include/hw/misc/armsse-cpuid.h
index 0ef33fcaba..80691c7180 100644
--- a/include/hw/misc/armsse-cpuid.h
+++ b/include/hw/misc/armsse-cpuid.h
@@ -23,11 +23,14 @@
 #define HW_MISC_ARMSSE_CPUID_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ARMSSE_CPUID "armsse-cpuid"
-#define ARMSSE_CPUID(obj) OBJECT_CHECK(ARMSSECPUID, (obj), TYPE_ARMSSE_CPUID)
+typedef struct ARMSSECPUID ARMSSECPUID;
+DECLARE_INSTANCE_CHECKER(ARMSSECPUID, ARMSSE_CPUID,
+                         TYPE_ARMSSE_CPUID)
 
-typedef struct ARMSSECPUID {
+struct ARMSSECPUID {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -36,6 +39,6 @@ typedef struct ARMSSECPUID {
 
     /* Properties */
     uint32_t cpuid;
-} ARMSSECPUID;
+};
 
 #endif
diff --git a/include/hw/misc/armsse-mhu.h b/include/hw/misc/armsse-mhu.h
index cf5d8a73e6..310643a022 100644
--- a/include/hw/misc/armsse-mhu.h
+++ b/include/hw/misc/armsse-mhu.h
@@ -24,11 +24,14 @@
 #define HW_MISC_ARMSSE_MHU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ARMSSE_MHU "armsse-mhu"
-#define ARMSSE_MHU(obj) OBJECT_CHECK(ARMSSEMHU, (obj), TYPE_ARMSSE_MHU)
+typedef struct ARMSSEMHU ARMSSEMHU;
+DECLARE_INSTANCE_CHECKER(ARMSSEMHU, ARMSSE_MHU,
+                         TYPE_ARMSSE_MHU)
 
-typedef struct ARMSSEMHU {
+struct ARMSSEMHU {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -39,6 +42,6 @@ typedef struct ARMSSEMHU {
 
     uint32_t cpu0intr;
     uint32_t cpu1intr;
-} ARMSSEMHU;
+};
 
 #endif
diff --git a/include/hw/misc/aspeed_scu.h b/include/hw/misc/aspeed_scu.h
index 9cd530afa2..8d3b14acd4 100644
--- a/include/hw/misc/aspeed_scu.h
+++ b/include/hw/misc/aspeed_scu.h
@@ -12,9 +12,13 @@
 #define ASPEED_SCU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_SCU "aspeed.scu"
-#define ASPEED_SCU(obj) OBJECT_CHECK(AspeedSCUState, (obj), TYPE_ASPEED_SCU)
+typedef struct AspeedSCUClass AspeedSCUClass;
+typedef struct AspeedSCUState AspeedSCUState;
+DECLARE_OBJ_CHECKERS(AspeedSCUState, AspeedSCUClass,
+                     ASPEED_SCU, TYPE_ASPEED_SCU)
 #define TYPE_ASPEED_2400_SCU TYPE_ASPEED_SCU "-ast2400"
 #define TYPE_ASPEED_2500_SCU TYPE_ASPEED_SCU "-ast2500"
 #define TYPE_ASPEED_2600_SCU TYPE_ASPEED_SCU "-ast2600"
@@ -22,7 +26,7 @@
 #define ASPEED_SCU_NR_REGS (0x1A8 >> 2)
 #define ASPEED_AST2600_SCU_NR_REGS (0xE20 >> 2)
 
-typedef struct AspeedSCUState {
+struct AspeedSCUState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -34,7 +38,7 @@ typedef struct AspeedSCUState {
     uint32_t hw_strap1;
     uint32_t hw_strap2;
     uint32_t hw_prot_key;
-} AspeedSCUState;
+};
 
 #define AST2400_A0_SILICON_REV   0x02000303U
 #define AST2400_A1_SILICON_REV   0x02010303U
@@ -47,12 +51,8 @@ typedef struct AspeedSCUState {
 
 extern bool is_supported_silicon_rev(uint32_t silicon_rev);
 
-#define ASPEED_SCU_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedSCUClass, (klass), TYPE_ASPEED_SCU)
-#define ASPEED_SCU_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedSCUClass, (obj), TYPE_ASPEED_SCU)
 
-typedef struct  AspeedSCUClass {
+struct AspeedSCUClass {
     SysBusDeviceClass parent_class;
 
     const uint32_t *resets;
@@ -60,7 +60,7 @@ typedef struct  AspeedSCUClass {
     uint32_t apb_divider;
     uint32_t nr_regs;
     const MemoryRegionOps *ops;
-}  AspeedSCUClass;
+};
 
 #define ASPEED_SCU_PROT_KEY      0x1688A8A8
 
diff --git a/include/hw/misc/aspeed_sdmc.h b/include/hw/misc/aspeed_sdmc.h
index c6226957dd..3375afc89b 100644
--- a/include/hw/misc/aspeed_sdmc.h
+++ b/include/hw/misc/aspeed_sdmc.h
@@ -10,9 +10,13 @@
 #define ASPEED_SDMC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_SDMC "aspeed.sdmc"
-#define ASPEED_SDMC(obj) OBJECT_CHECK(AspeedSDMCState, (obj), TYPE_ASPEED_SDMC)
+typedef struct AspeedSDMCClass AspeedSDMCClass;
+typedef struct AspeedSDMCState AspeedSDMCState;
+DECLARE_OBJ_CHECKERS(AspeedSDMCState, AspeedSDMCClass,
+                     ASPEED_SDMC, TYPE_ASPEED_SDMC)
 #define TYPE_ASPEED_2400_SDMC TYPE_ASPEED_SDMC "-ast2400"
 #define TYPE_ASPEED_2500_SDMC TYPE_ASPEED_SDMC "-ast2500"
 #define TYPE_ASPEED_2600_SDMC TYPE_ASPEED_SDMC "-ast2600"
@@ -30,7 +34,7 @@
  */
 #define ASPEED_SDMC_NR_REGS (0x500 >> 2)
 
-typedef struct AspeedSDMCState {
+struct AspeedSDMCState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -40,20 +44,16 @@ typedef struct AspeedSDMCState {
     uint32_t regs[ASPEED_SDMC_NR_REGS];
     uint64_t ram_size;
     uint64_t max_ram_size;
-} AspeedSDMCState;
+};
 
-#define ASPEED_SDMC_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedSDMCClass, (klass), TYPE_ASPEED_SDMC)
-#define ASPEED_SDMC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedSDMCClass, (obj), TYPE_ASPEED_SDMC)
 
-typedef struct AspeedSDMCClass {
+struct AspeedSDMCClass {
     SysBusDeviceClass parent_class;
 
     uint64_t max_ram_size;
     const uint64_t *valid_ram_sizes;
     uint32_t (*compute_conf)(AspeedSDMCState *s, uint32_t data);
     void (*write)(AspeedSDMCState *s, uint32_t reg, uint32_t data);
-} AspeedSDMCClass;
+};
 
 #endif /* ASPEED_SDMC_H */
diff --git a/include/hw/misc/aspeed_xdma.h b/include/hw/misc/aspeed_xdma.h
index 00b45d931f..0e62c04520 100644
--- a/include/hw/misc/aspeed_xdma.h
+++ b/include/hw/misc/aspeed_xdma.h
@@ -10,14 +10,17 @@
 #define ASPEED_XDMA_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_XDMA "aspeed.xdma"
-#define ASPEED_XDMA(obj) OBJECT_CHECK(AspeedXDMAState, (obj), TYPE_ASPEED_XDMA)
+typedef struct AspeedXDMAState AspeedXDMAState;
+DECLARE_INSTANCE_CHECKER(AspeedXDMAState, ASPEED_XDMA,
+                         TYPE_ASPEED_XDMA)
 
 #define ASPEED_XDMA_NUM_REGS (ASPEED_XDMA_REG_SIZE / sizeof(uint32_t))
 #define ASPEED_XDMA_REG_SIZE 0x7C
 
-typedef struct AspeedXDMAState {
+struct AspeedXDMAState {
     SysBusDevice parent;
 
     MemoryRegion iomem;
@@ -25,6 +28,6 @@ typedef struct AspeedXDMAState {
 
     char bmc_cmdq_readp_set;
     uint32_t regs[ASPEED_XDMA_NUM_REGS];
-} AspeedXDMAState;
+};
 
 #endif /* ASPEED_XDMA_H */
diff --git a/include/hw/misc/auxbus.h b/include/hw/misc/auxbus.h
index 041edfc9e9..f910d94118 100644
--- a/include/hw/misc/auxbus.h
+++ b/include/hw/misc/auxbus.h
@@ -27,6 +27,7 @@
 
 #include "exec/memory.h"
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 typedef struct AUXBus AUXBus;
 typedef struct AUXSlave AUXSlave;
@@ -35,7 +36,8 @@ typedef enum AUXReply AUXReply;
 
 #define TYPE_AUXTOI2C "aux-to-i2c-bridge"
 typedef struct AUXTOI2CState AUXTOI2CState;
-#define AUXTOI2C(obj) OBJECT_CHECK(AUXTOI2CState, (obj), TYPE_AUXTOI2C)
+DECLARE_INSTANCE_CHECKER(AUXTOI2CState, AUXTOI2C,
+                         TYPE_AUXTOI2C)
 
 enum AUXCommand {
     WRITE_I2C = 0,
@@ -56,7 +58,8 @@ enum AUXReply {
 };
 
 #define TYPE_AUX_BUS "aux-bus"
-#define AUX_BUS(obj) OBJECT_CHECK(AUXBus, (obj), TYPE_AUX_BUS)
+DECLARE_INSTANCE_CHECKER(AUXBus, AUX_BUS,
+                         TYPE_AUX_BUS)
 
 struct AUXBus {
     /* < private > */
@@ -75,8 +78,8 @@ struct AUXBus {
 };
 
 #define TYPE_AUX_SLAVE "aux-slave"
-#define AUX_SLAVE(obj) \
-     OBJECT_CHECK(AUXSlave, (obj), TYPE_AUX_SLAVE)
+DECLARE_INSTANCE_CHECKER(AUXSlave, AUX_SLAVE,
+                         TYPE_AUX_SLAVE)
 
 struct AUXSlave {
     /* < private > */
diff --git a/include/hw/misc/avr_power.h b/include/hw/misc/avr_power.h
index e08e44f629..938ab3e21b 100644
--- a/include/hw/misc/avr_power.h
+++ b/include/hw/misc/avr_power.h
@@ -27,12 +27,15 @@
 
 #include "hw/sysbus.h"
 #include "hw/hw.h"
+#include "qom/object.h"
 
 
 #define TYPE_AVR_MASK "avr-power"
-#define AVR_MASK(obj) OBJECT_CHECK(AVRMaskState, (obj), TYPE_AVR_MASK)
+typedef struct AVRMaskState AVRMaskState;
+DECLARE_INSTANCE_CHECKER(AVRMaskState, AVR_MASK,
+                         TYPE_AVR_MASK)
 
-typedef struct {
+struct AVRMaskState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -41,6 +44,6 @@ typedef struct {
 
     uint8_t val;
     qemu_irq irq[8];
-} AVRMaskState;
+};
 
 #endif /* HW_MISC_AVR_POWER_H */
diff --git a/include/hw/misc/bcm2835_mbox.h b/include/hw/misc/bcm2835_mbox.h
index 57f95cc35e..d8c8017f4e 100644
--- a/include/hw/misc/bcm2835_mbox.h
+++ b/include/hw/misc/bcm2835_mbox.h
@@ -10,10 +10,12 @@
 
 #include "bcm2835_mbox_defs.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_MBOX "bcm2835-mbox"
-#define BCM2835_MBOX(obj) \
-        OBJECT_CHECK(BCM2835MboxState, (obj), TYPE_BCM2835_MBOX)
+typedef struct BCM2835MboxState BCM2835MboxState;
+DECLARE_INSTANCE_CHECKER(BCM2835MboxState, BCM2835_MBOX,
+                         TYPE_BCM2835_MBOX)
 
 typedef struct {
     uint32_t reg[MBOX_SIZE];
@@ -22,7 +24,7 @@ typedef struct {
     uint32_t config;
 } BCM2835Mbox;
 
-typedef struct {
+struct BCM2835MboxState {
     /*< private >*/
     SysBusDevice busdev;
     /*< public >*/
@@ -34,6 +36,6 @@ typedef struct {
     bool mbox_irq_disabled;
     bool available[MBOX_CHAN_COUNT];
     BCM2835Mbox mbox[2];
-} BCM2835MboxState;
+};
 
 #endif
diff --git a/include/hw/misc/bcm2835_mphi.h b/include/hw/misc/bcm2835_mphi.h
index e084314d0f..249511182e 100644
--- a/include/hw/misc/bcm2835_mphi.h
+++ b/include/hw/misc/bcm2835_mphi.h
@@ -19,6 +19,7 @@
 
 #include "hw/irq.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define MPHI_MMIO_SIZE      0x1000
 
@@ -38,7 +39,7 @@ struct BCM2835MphiState {
 
 #define TYPE_BCM2835_MPHI   "bcm2835-mphi"
 
-#define BCM2835_MPHI(obj) \
-    OBJECT_CHECK(BCM2835MphiState, (obj), TYPE_BCM2835_MPHI)
+DECLARE_INSTANCE_CHECKER(BCM2835MphiState, BCM2835_MPHI,
+                         TYPE_BCM2835_MPHI)
 
 #endif
diff --git a/include/hw/misc/bcm2835_property.h b/include/hw/misc/bcm2835_property.h
index b321f22499..5c827a1900 100644
--- a/include/hw/misc/bcm2835_property.h
+++ b/include/hw/misc/bcm2835_property.h
@@ -11,12 +11,14 @@
 #include "hw/sysbus.h"
 #include "net/net.h"
 #include "hw/display/bcm2835_fb.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_PROPERTY "bcm2835-property"
-#define BCM2835_PROPERTY(obj) \
-        OBJECT_CHECK(BCM2835PropertyState, (obj), TYPE_BCM2835_PROPERTY)
+typedef struct BCM2835PropertyState BCM2835PropertyState;
+DECLARE_INSTANCE_CHECKER(BCM2835PropertyState, BCM2835_PROPERTY,
+                         TYPE_BCM2835_PROPERTY)
 
-typedef struct {
+struct BCM2835PropertyState {
     /*< private >*/
     SysBusDevice busdev;
     /*< public >*/
@@ -31,6 +33,6 @@ typedef struct {
     uint32_t board_rev;
     uint32_t addr;
     bool pending;
-} BCM2835PropertyState;
+};
 
 #endif
diff --git a/include/hw/misc/bcm2835_rng.h b/include/hw/misc/bcm2835_rng.h
index 41a531bce7..fec76eef8e 100644
--- a/include/hw/misc/bcm2835_rng.h
+++ b/include/hw/misc/bcm2835_rng.h
@@ -11,17 +11,19 @@
 #define BCM2835_RNG_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_RNG "bcm2835-rng"
-#define BCM2835_RNG(obj) \
-        OBJECT_CHECK(BCM2835RngState, (obj), TYPE_BCM2835_RNG)
+typedef struct BCM2835RngState BCM2835RngState;
+DECLARE_INSTANCE_CHECKER(BCM2835RngState, BCM2835_RNG,
+                         TYPE_BCM2835_RNG)
 
-typedef struct {
+struct BCM2835RngState {
     SysBusDevice busdev;
     MemoryRegion iomem;
 
     uint32_t rng_ctrl;
     uint32_t rng_status;
-} BCM2835RngState;
+};
 
 #endif
diff --git a/include/hw/misc/bcm2835_thermal.h b/include/hw/misc/bcm2835_thermal.h
index c3651b27ec..5b827c970e 100644
--- a/include/hw/misc/bcm2835_thermal.h
+++ b/include/hw/misc/bcm2835_thermal.h
@@ -10,18 +10,20 @@
 #define HW_MISC_BCM2835_THERMAL_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_THERMAL "bcm2835-thermal"
 
-#define BCM2835_THERMAL(obj) \
-    OBJECT_CHECK(Bcm2835ThermalState, (obj), TYPE_BCM2835_THERMAL)
+typedef struct Bcm2835ThermalState Bcm2835ThermalState;
+DECLARE_INSTANCE_CHECKER(Bcm2835ThermalState, BCM2835_THERMAL,
+                         TYPE_BCM2835_THERMAL)
 
-typedef struct {
+struct Bcm2835ThermalState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
     MemoryRegion iomem;
     uint32_t ctl;
-} Bcm2835ThermalState;
+};
 
 #endif
diff --git a/include/hw/misc/grlib_ahb_apb_pnp.h b/include/hw/misc/grlib_ahb_apb_pnp.h
index a0f6dcfda7..34b18e3193 100644
--- a/include/hw/misc/grlib_ahb_apb_pnp.h
+++ b/include/hw/misc/grlib_ahb_apb_pnp.h
@@ -23,16 +23,17 @@
 
 #ifndef GRLIB_AHB_APB_PNP_H
 #define GRLIB_AHB_APB_PNP_H
+#include "qom/object.h"
 
 #define TYPE_GRLIB_AHB_PNP "grlib,ahbpnp"
-#define GRLIB_AHB_PNP(obj) \
-    OBJECT_CHECK(AHBPnp, (obj), TYPE_GRLIB_AHB_PNP)
 typedef struct AHBPnp AHBPnp;
+DECLARE_INSTANCE_CHECKER(AHBPnp, GRLIB_AHB_PNP,
+                         TYPE_GRLIB_AHB_PNP)
 
 #define TYPE_GRLIB_APB_PNP "grlib,apbpnp"
-#define GRLIB_APB_PNP(obj) \
-    OBJECT_CHECK(APBPnp, (obj), TYPE_GRLIB_APB_PNP)
 typedef struct APBPnp APBPnp;
+DECLARE_INSTANCE_CHECKER(APBPnp, GRLIB_APB_PNP,
+                         TYPE_GRLIB_APB_PNP)
 
 void grlib_ahb_pnp_add_entry(AHBPnp *dev, uint32_t address, uint32_t mask,
                              uint8_t vendor, uint16_t device, int slave,
diff --git a/include/hw/misc/imx25_ccm.h b/include/hw/misc/imx25_ccm.h
index 296321c612..55c5db8815 100644
--- a/include/hw/misc/imx25_ccm.h
+++ b/include/hw/misc/imx25_ccm.h
@@ -12,6 +12,7 @@
 #define IMX25_CCM_H
 
 #include "hw/misc/imx_ccm.h"
+#include "qom/object.h"
 
 #define IMX25_CCM_MPCTL_REG  0
 #define IMX25_CCM_UPCTL_REG  1
@@ -63,9 +64,11 @@
                              CCTL_##name##_SHIFT)
 
 #define TYPE_IMX25_CCM "imx25.ccm"
-#define IMX25_CCM(obj) OBJECT_CHECK(IMX25CCMState, (obj), TYPE_IMX25_CCM)
+typedef struct IMX25CCMState IMX25CCMState;
+DECLARE_INSTANCE_CHECKER(IMX25CCMState, IMX25_CCM,
+                         TYPE_IMX25_CCM)
 
-typedef struct IMX25CCMState {
+struct IMX25CCMState {
     /* <private> */
     IMXCCMState parent_obj;
 
@@ -74,6 +77,6 @@ typedef struct IMX25CCMState {
 
     uint32_t reg[IMX25_CCM_MAX_REG];
 
-} IMX25CCMState;
+};
 
 #endif /* IMX25_CCM_H */
diff --git a/include/hw/misc/imx31_ccm.h b/include/hw/misc/imx31_ccm.h
index c376fad14c..25e280e976 100644
--- a/include/hw/misc/imx31_ccm.h
+++ b/include/hw/misc/imx31_ccm.h
@@ -12,6 +12,7 @@
 #define IMX31_CCM_H
 
 #include "hw/misc/imx_ccm.h"
+#include "qom/object.h"
 
 #define IMX31_CCM_CCMR_REG  0
 #define IMX31_CCM_PDR0_REG  1
@@ -72,9 +73,11 @@
                              PDR0_##name##_PODF_SHIFT)
 
 #define TYPE_IMX31_CCM "imx31.ccm"
-#define IMX31_CCM(obj) OBJECT_CHECK(IMX31CCMState, (obj), TYPE_IMX31_CCM)
+typedef struct IMX31CCMState IMX31CCMState;
+DECLARE_INSTANCE_CHECKER(IMX31CCMState, IMX31_CCM,
+                         TYPE_IMX31_CCM)
 
-typedef struct IMX31CCMState {
+struct IMX31CCMState {
     /* <private> */
     IMXCCMState parent_obj;
 
@@ -83,6 +86,6 @@ typedef struct IMX31CCMState {
 
     uint32_t reg[IMX31_CCM_MAX_REG];
 
-} IMX31CCMState;
+};
 
 #endif /* IMX31_CCM_H */
diff --git a/include/hw/misc/imx6_ccm.h b/include/hw/misc/imx6_ccm.h
index 80505809b4..85f32417d6 100644
--- a/include/hw/misc/imx6_ccm.h
+++ b/include/hw/misc/imx6_ccm.h
@@ -13,6 +13,7 @@
 
 #include "hw/misc/imx_ccm.h"
 #include "qemu/bitops.h"
+#include "qom/object.h"
 
 #define CCM_CCR 0
 #define CCM_CCDR 1
@@ -178,9 +179,11 @@
 #define EXTRACT(value, name) extract32(value, name##_SHIFT, name##_LENGTH)
 
 #define TYPE_IMX6_CCM "imx6.ccm"
-#define IMX6_CCM(obj) OBJECT_CHECK(IMX6CCMState, (obj), TYPE_IMX6_CCM)
+typedef struct IMX6CCMState IMX6CCMState;
+DECLARE_INSTANCE_CHECKER(IMX6CCMState, IMX6_CCM,
+                         TYPE_IMX6_CCM)
 
-typedef struct IMX6CCMState {
+struct IMX6CCMState {
     /* <private> */
     IMXCCMState parent_obj;
 
@@ -192,6 +195,6 @@ typedef struct IMX6CCMState {
     uint32_t ccm[CCM_MAX];
     uint32_t analog[CCM_ANALOG_MAX];
 
-} IMX6CCMState;
+};
 
 #endif /* IMX6_CCM_H */
diff --git a/include/hw/misc/imx6_src.h b/include/hw/misc/imx6_src.h
index eb3640732e..15b51757ba 100644
--- a/include/hw/misc/imx6_src.h
+++ b/include/hw/misc/imx6_src.h
@@ -13,6 +13,7 @@
 
 #include "hw/sysbus.h"
 #include "qemu/bitops.h"
+#include "qom/object.h"
 
 #define SRC_SCR 0
 #define SRC_SBMR1 1
@@ -57,9 +58,11 @@
 #define EXTRACT(value, name) extract32(value, name##_SHIFT, name##_LENGTH)
 
 #define TYPE_IMX6_SRC "imx6.src"
-#define IMX6_SRC(obj) OBJECT_CHECK(IMX6SRCState, (obj), TYPE_IMX6_SRC)
+typedef struct IMX6SRCState IMX6SRCState;
+DECLARE_INSTANCE_CHECKER(IMX6SRCState, IMX6_SRC,
+                         TYPE_IMX6_SRC)
 
-typedef struct IMX6SRCState {
+struct IMX6SRCState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -68,6 +71,6 @@ typedef struct IMX6SRCState {
 
     uint32_t regs[SRC_MAX];
 
-} IMX6SRCState;
+};
 
 #endif /* IMX6_SRC_H */
diff --git a/include/hw/misc/imx6ul_ccm.h b/include/hw/misc/imx6ul_ccm.h
index 377ddca244..d614de0edd 100644
--- a/include/hw/misc/imx6ul_ccm.h
+++ b/include/hw/misc/imx6ul_ccm.h
@@ -12,6 +12,7 @@
 
 #include "hw/misc/imx_ccm.h"
 #include "qemu/bitops.h"
+#include "qom/object.h"
 
 #define CCM_CCR 0
 #define CCM_CCDR 1
@@ -207,9 +208,11 @@
 #define CCM_ANALOG_PLL_LOCK      (1 << 31);
 
 #define TYPE_IMX6UL_CCM "imx6ul.ccm"
-#define IMX6UL_CCM(obj) OBJECT_CHECK(IMX6ULCCMState, (obj), TYPE_IMX6UL_CCM)
+typedef struct IMX6ULCCMState IMX6ULCCMState;
+DECLARE_INSTANCE_CHECKER(IMX6ULCCMState, IMX6UL_CCM,
+                         TYPE_IMX6UL_CCM)
 
-typedef struct IMX6ULCCMState {
+struct IMX6ULCCMState {
     /* <private> */
     IMXCCMState parent_obj;
 
@@ -221,6 +224,6 @@ typedef struct IMX6ULCCMState {
     uint32_t ccm[CCM_MAX];
     uint32_t analog[CCM_ANALOG_MAX];
 
-} IMX6ULCCMState;
+};
 
 #endif /* IMX6UL_CCM_H */
diff --git a/include/hw/misc/imx7_ccm.h b/include/hw/misc/imx7_ccm.h
index 9538f37d98..e2757622d0 100644
--- a/include/hw/misc/imx7_ccm.h
+++ b/include/hw/misc/imx7_ccm.h
@@ -14,6 +14,7 @@
 
 #include "hw/misc/imx_ccm.h"
 #include "qemu/bitops.h"
+#include "qom/object.h"
 
 enum IMX7AnalogRegisters {
     ANALOG_PLL_ARM,
@@ -104,9 +105,11 @@ enum IMX7PMURegisters {
 };
 
 #define TYPE_IMX7_CCM "imx7.ccm"
-#define IMX7_CCM(obj) OBJECT_CHECK(IMX7CCMState, (obj), TYPE_IMX7_CCM)
+typedef struct IMX7CCMState IMX7CCMState;
+DECLARE_INSTANCE_CHECKER(IMX7CCMState, IMX7_CCM,
+                         TYPE_IMX7_CCM)
 
-typedef struct IMX7CCMState {
+struct IMX7CCMState {
     /* <private> */
     IMXCCMState parent_obj;
 
@@ -114,13 +117,15 @@ typedef struct IMX7CCMState {
     MemoryRegion iomem;
 
     uint32_t ccm[CCM_MAX];
-} IMX7CCMState;
+};
 
 
 #define TYPE_IMX7_ANALOG "imx7.analog"
-#define IMX7_ANALOG(obj) OBJECT_CHECK(IMX7AnalogState, (obj), TYPE_IMX7_ANALOG)
+typedef struct IMX7AnalogState IMX7AnalogState;
+DECLARE_INSTANCE_CHECKER(IMX7AnalogState, IMX7_ANALOG,
+                         TYPE_IMX7_ANALOG)
 
-typedef struct IMX7AnalogState {
+struct IMX7AnalogState {
     /* <private> */
     IMXCCMState parent_obj;
 
@@ -134,6 +139,6 @@ typedef struct IMX7AnalogState {
 
     uint32_t analog[ANALOG_MAX];
     uint32_t pmu[PMU_MAX];
-} IMX7AnalogState;
+};
 
 #endif /* IMX7_CCM_H */
diff --git a/include/hw/misc/imx7_gpr.h b/include/hw/misc/imx7_gpr.h
index e19373d274..f80b3ed28c 100644
--- a/include/hw/misc/imx7_gpr.h
+++ b/include/hw/misc/imx7_gpr.h
@@ -14,15 +14,18 @@
 
 #include "qemu/bitops.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IMX7_GPR "imx7.gpr"
-#define IMX7_GPR(obj) OBJECT_CHECK(IMX7GPRState, (obj), TYPE_IMX7_GPR)
+typedef struct IMX7GPRState IMX7GPRState;
+DECLARE_INSTANCE_CHECKER(IMX7GPRState, IMX7_GPR,
+                         TYPE_IMX7_GPR)
 
-typedef struct IMX7GPRState {
+struct IMX7GPRState {
     /* <private> */
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
-} IMX7GPRState;
+};
 
 #endif /* IMX7_GPR_H */
diff --git a/include/hw/misc/imx7_snvs.h b/include/hw/misc/imx7_snvs.h
index 255f8f26f9..ea5395c107 100644
--- a/include/hw/misc/imx7_snvs.h
+++ b/include/hw/misc/imx7_snvs.h
@@ -14,6 +14,7 @@
 
 #include "qemu/bitops.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 
 enum IMX7SNVSRegisters {
@@ -23,13 +24,15 @@ enum IMX7SNVSRegisters {
 };
 
 #define TYPE_IMX7_SNVS "imx7.snvs"
-#define IMX7_SNVS(obj) OBJECT_CHECK(IMX7SNVSState, (obj), TYPE_IMX7_SNVS)
+typedef struct IMX7SNVSState IMX7SNVSState;
+DECLARE_INSTANCE_CHECKER(IMX7SNVSState, IMX7_SNVS,
+                         TYPE_IMX7_SNVS)
 
-typedef struct IMX7SNVSState {
+struct IMX7SNVSState {
     /* <private> */
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
-} IMX7SNVSState;
+};
 
 #endif /* IMX7_SNVS_H */
diff --git a/include/hw/misc/imx_ccm.h b/include/hw/misc/imx_ccm.h
index efdc451eb0..e9d82a2a50 100644
--- a/include/hw/misc/imx_ccm.h
+++ b/include/hw/misc/imx_ccm.h
@@ -12,6 +12,7 @@
 #define IMX_CCM_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define CKIL_FREQ 32768 /* nominal 32khz clock */
 
@@ -27,20 +28,18 @@
 #define PLL_MFN(x)              (((x) & 0x3ff) << 0)
 
 #define TYPE_IMX_CCM "imx.ccm"
-#define IMX_CCM(obj) \
-     OBJECT_CHECK(IMXCCMState, (obj), TYPE_IMX_CCM)
-#define IMX_CCM_CLASS(klass) \
-     OBJECT_CLASS_CHECK(IMXCCMClass, (klass), TYPE_IMX_CCM)
-#define IMX_CCM_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(IMXCCMClass, (obj), TYPE_IMX_CCM)
+typedef struct IMXCCMClass IMXCCMClass;
+typedef struct IMXCCMState IMXCCMState;
+DECLARE_OBJ_CHECKERS(IMXCCMState, IMXCCMClass,
+                     IMX_CCM, TYPE_IMX_CCM)
 
-typedef struct IMXCCMState {
+struct IMXCCMState {
     /* <private> */
     SysBusDevice parent_obj;
 
     /* <public> */
 
-} IMXCCMState;
+};
 
 typedef enum  {
     CLK_NONE,
@@ -52,13 +51,13 @@ typedef enum  {
     CLK_HIGH,
 } IMXClk;
 
-typedef struct IMXCCMClass {
+struct IMXCCMClass {
     /* <private> */
     SysBusDeviceClass parent_class;
 
     /* <public> */
     uint32_t (*get_clock_frequency)(IMXCCMState *s, IMXClk clk);
-} IMXCCMClass;
+};
 
 uint32_t imx_ccm_calc_pll(uint32_t pllreg, uint32_t base_freq);
 
diff --git a/include/hw/misc/imx_rngc.h b/include/hw/misc/imx_rngc.h
index f0d2b44d4f..f7b569cac5 100644
--- a/include/hw/misc/imx_rngc.h
+++ b/include/hw/misc/imx_rngc.h
@@ -11,11 +11,14 @@
 #define IMX_RNGC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IMX_RNGC "imx.rngc"
-#define IMX_RNGC(obj) OBJECT_CHECK(IMXRNGCState, (obj), TYPE_IMX_RNGC)
+typedef struct IMXRNGCState IMXRNGCState;
+DECLARE_INSTANCE_CHECKER(IMXRNGCState, IMX_RNGC,
+                         TYPE_IMX_RNGC)
 
-typedef struct IMXRNGCState {
+struct IMXRNGCState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -30,6 +33,6 @@ typedef struct IMXRNGCState {
     QEMUBH *self_test_bh;
     QEMUBH *seed_bh;
     qemu_irq irq;
-} IMXRNGCState;
+};
 
 #endif /* IMX_RNGC_H */
diff --git a/include/hw/misc/iotkit-secctl.h b/include/hw/misc/iotkit-secctl.h
index bcb0437be5..d062ed43e7 100644
--- a/include/hw/misc/iotkit-secctl.h
+++ b/include/hw/misc/iotkit-secctl.h
@@ -56,9 +56,12 @@
 #define IOTKIT_SECCTL_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IOTKIT_SECCTL "iotkit-secctl"
-#define IOTKIT_SECCTL(obj) OBJECT_CHECK(IoTKitSecCtl, (obj), TYPE_IOTKIT_SECCTL)
+typedef struct IoTKitSecCtl IoTKitSecCtl;
+DECLARE_INSTANCE_CHECKER(IoTKitSecCtl, IOTKIT_SECCTL,
+                         TYPE_IOTKIT_SECCTL)
 
 #define IOTS_APB_PPC0_NUM_PORTS 3
 #define IOTS_APB_PPC1_NUM_PORTS 1
@@ -70,7 +73,6 @@
 #define IOTS_NUM_MPC 4
 #define IOTS_NUM_EXP_MSC 16
 
-typedef struct IoTKitSecCtl IoTKitSecCtl;
 
 /* State and IRQ lines relating to a PPC. For the
  * PPCs in the IoTKit not all the IRQ lines are used.
diff --git a/include/hw/misc/iotkit-sysctl.h b/include/hw/misc/iotkit-sysctl.h
index 601c8ecc0d..22ceb5d76d 100644
--- a/include/hw/misc/iotkit-sysctl.h
+++ b/include/hw/misc/iotkit-sysctl.h
@@ -28,12 +28,14 @@
 #define HW_MISC_IOTKIT_SYSCTL_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IOTKIT_SYSCTL "iotkit-sysctl"
-#define IOTKIT_SYSCTL(obj) OBJECT_CHECK(IoTKitSysCtl, (obj), \
-                                        TYPE_IOTKIT_SYSCTL)
+typedef struct IoTKitSysCtl IoTKitSysCtl;
+DECLARE_INSTANCE_CHECKER(IoTKitSysCtl, IOTKIT_SYSCTL,
+                         TYPE_IOTKIT_SYSCTL)
 
-typedef struct IoTKitSysCtl {
+struct IoTKitSysCtl {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -67,6 +69,6 @@ typedef struct IoTKitSysCtl {
     uint32_t initsvtor1_rst;
 
     bool is_sse200;
-} IoTKitSysCtl;
+};
 
 #endif
diff --git a/include/hw/misc/iotkit-sysinfo.h b/include/hw/misc/iotkit-sysinfo.h
index d84eb203b9..23ae43e549 100644
--- a/include/hw/misc/iotkit-sysinfo.h
+++ b/include/hw/misc/iotkit-sysinfo.h
@@ -23,12 +23,14 @@
 #define HW_MISC_IOTKIT_SYSINFO_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_IOTKIT_SYSINFO "iotkit-sysinfo"
-#define IOTKIT_SYSINFO(obj) OBJECT_CHECK(IoTKitSysInfo, (obj), \
-                                        TYPE_IOTKIT_SYSINFO)
+typedef struct IoTKitSysInfo IoTKitSysInfo;
+DECLARE_INSTANCE_CHECKER(IoTKitSysInfo, IOTKIT_SYSINFO,
+                         TYPE_IOTKIT_SYSINFO)
 
-typedef struct IoTKitSysInfo {
+struct IoTKitSysInfo {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -38,6 +40,6 @@ typedef struct IoTKitSysInfo {
     /* Properties */
     uint32_t sys_version;
     uint32_t sys_config;
-} IoTKitSysInfo;
+};
 
 #endif
diff --git a/include/hw/misc/mac_via.h b/include/hw/misc/mac_via.h
index 0be05d649b..862cbba3ab 100644
--- a/include/hw/misc/mac_via.h
+++ b/include/hw/misc/mac_via.h
@@ -12,6 +12,7 @@
 #include "exec/memory.h"
 #include "hw/sysbus.h"
 #include "hw/misc/mos6522.h"
+#include "qom/object.h"
 
 
 /* VIA 1 */
@@ -31,10 +32,11 @@
 
 
 #define TYPE_MOS6522_Q800_VIA1 "mos6522-q800-via1"
-#define MOS6522_Q800_VIA1(obj)  OBJECT_CHECK(MOS6522Q800VIA1State, (obj), \
-                                    TYPE_MOS6522_Q800_VIA1)
+typedef struct MOS6522Q800VIA1State MOS6522Q800VIA1State;
+DECLARE_INSTANCE_CHECKER(MOS6522Q800VIA1State, MOS6522_Q800_VIA1,
+                         TYPE_MOS6522_Q800_VIA1)
 
-typedef struct MOS6522Q800VIA1State {
+struct MOS6522Q800VIA1State {
     /*< private >*/
     MOS6522State parent_obj;
 
@@ -47,7 +49,7 @@ typedef struct MOS6522Q800VIA1State {
     int64_t next_second;
     QEMUTimer *VBL_timer;
     int64_t next_VBL;
-} MOS6522Q800VIA1State;
+};
 
 
 /* VIA 2 */
@@ -66,19 +68,22 @@ typedef struct MOS6522Q800VIA1State {
 #define VIA2_IRQ_ASC        (1 << VIA2_IRQ_ASC_BIT)
 
 #define TYPE_MOS6522_Q800_VIA2 "mos6522-q800-via2"
-#define MOS6522_Q800_VIA2(obj)  OBJECT_CHECK(MOS6522Q800VIA2State, (obj), \
-                                    TYPE_MOS6522_Q800_VIA2)
+typedef struct MOS6522Q800VIA2State MOS6522Q800VIA2State;
+DECLARE_INSTANCE_CHECKER(MOS6522Q800VIA2State, MOS6522_Q800_VIA2,
+                         TYPE_MOS6522_Q800_VIA2)
 
-typedef struct MOS6522Q800VIA2State {
+struct MOS6522Q800VIA2State {
     /*< private >*/
     MOS6522State parent_obj;
-} MOS6522Q800VIA2State;
+};
 
 
 #define TYPE_MAC_VIA "mac_via"
-#define MAC_VIA(obj)   OBJECT_CHECK(MacVIAState, (obj), TYPE_MAC_VIA)
+typedef struct MacVIAState MacVIAState;
+DECLARE_INSTANCE_CHECKER(MacVIAState, MAC_VIA,
+                         TYPE_MAC_VIA)
 
-typedef struct MacVIAState {
+struct MacVIAState {
     SysBusDevice busdev;
 
     VMChangeStateEntry *vmstate;
@@ -113,6 +118,6 @@ typedef struct MacVIAState {
     uint8_t adb_data_in[128];
     uint8_t adb_data_out[16];
     uint8_t adb_autopoll_cmd;
-} MacVIAState;
+};
 
 #endif
diff --git a/include/hw/misc/macio/cuda.h b/include/hw/misc/macio/cuda.h
index a8cf0be1ec..e738b6376f 100644
--- a/include/hw/misc/macio/cuda.h
+++ b/include/hw/misc/macio/cuda.h
@@ -27,6 +27,7 @@
 #define CUDA_H
 
 #include "hw/misc/mos6522.h"
+#include "qom/object.h"
 
 /* CUDA commands (2nd byte) */
 #define CUDA_WARM_START                0x0
@@ -58,20 +59,23 @@
 
 
 /* MOS6522 CUDA */
-typedef struct MOS6522CUDAState {
+struct MOS6522CUDAState {
     /*< private >*/
     MOS6522State parent_obj;
-} MOS6522CUDAState;
+};
+typedef struct MOS6522CUDAState MOS6522CUDAState;
 
 #define TYPE_MOS6522_CUDA "mos6522-cuda"
-#define MOS6522_CUDA(obj) OBJECT_CHECK(MOS6522CUDAState, (obj), \
-                                       TYPE_MOS6522_CUDA)
+DECLARE_INSTANCE_CHECKER(MOS6522CUDAState, MOS6522_CUDA,
+                         TYPE_MOS6522_CUDA)
 
 /* Cuda */
 #define TYPE_CUDA "cuda"
-#define CUDA(obj) OBJECT_CHECK(CUDAState, (obj), TYPE_CUDA)
+typedef struct CUDAState CUDAState;
+DECLARE_INSTANCE_CHECKER(CUDAState, CUDA,
+                         TYPE_CUDA)
 
-typedef struct CUDAState {
+struct CUDAState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -97,6 +101,6 @@ typedef struct CUDAState {
     qemu_irq irq;
     uint8_t data_in[128];
     uint8_t data_out[16];
-} CUDAState;
+};
 
 #endif /* CUDA_H */
diff --git a/include/hw/misc/macio/gpio.h b/include/hw/misc/macio/gpio.h
index 24a4364b39..1d0c8434ae 100644
--- a/include/hw/misc/macio/gpio.h
+++ b/include/hw/misc/macio/gpio.h
@@ -28,11 +28,14 @@
 
 #include "hw/ppc/openpic.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_MACIO_GPIO "macio-gpio"
-#define MACIO_GPIO(obj) OBJECT_CHECK(MacIOGPIOState, (obj), TYPE_MACIO_GPIO)
+typedef struct MacIOGPIOState MacIOGPIOState;
+DECLARE_INSTANCE_CHECKER(MacIOGPIOState, MACIO_GPIO,
+                         TYPE_MACIO_GPIO)
 
-typedef struct MacIOGPIOState {
+struct MacIOGPIOState {
     /*< private >*/
     SysBusDevice parent;
     /*< public >*/
@@ -43,7 +46,7 @@ typedef struct MacIOGPIOState {
     qemu_irq gpio_extirqs[10];
     uint8_t gpio_levels[8];
     uint8_t gpio_regs[36]; /* XXX Check count */
-} MacIOGPIOState;
+};
 
 void macio_set_gpio(MacIOGPIOState *s, uint32_t gpio, bool state);
 
diff --git a/include/hw/misc/macio/macio.h b/include/hw/misc/macio/macio.h
index 87335a991c..02dbf37630 100644
--- a/include/hw/misc/macio/macio.h
+++ b/include/hw/misc/macio/macio.h
@@ -36,21 +36,26 @@
 #include "hw/ppc/mac.h"
 #include "hw/ppc/mac_dbdma.h"
 #include "hw/ppc/openpic.h"
+#include "qom/object.h"
 
 /* MacIO virtual bus */
 #define TYPE_MACIO_BUS "macio-bus"
-#define MACIO_BUS(obj) OBJECT_CHECK(MacIOBusState, (obj), TYPE_MACIO_BUS)
+typedef struct MacIOBusState MacIOBusState;
+DECLARE_INSTANCE_CHECKER(MacIOBusState, MACIO_BUS,
+                         TYPE_MACIO_BUS)
 
-typedef struct MacIOBusState {
+struct MacIOBusState {
     /*< private >*/
     BusState parent_obj;
-} MacIOBusState;
+};
 
 /* MacIO IDE */
 #define TYPE_MACIO_IDE "macio-ide"
-#define MACIO_IDE(obj) OBJECT_CHECK(MACIOIDEState, (obj), TYPE_MACIO_IDE)
+typedef struct MACIOIDEState MACIOIDEState;
+DECLARE_INSTANCE_CHECKER(MACIOIDEState, MACIO_IDE,
+                         TYPE_MACIO_IDE)
 
-typedef struct MACIOIDEState {
+struct MACIOIDEState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -68,15 +73,17 @@ typedef struct MACIOIDEState {
     bool dma_active;
     uint32_t timing_reg;
     uint32_t irq_reg;
-} MACIOIDEState;
+};
 
 void macio_ide_init_drives(MACIOIDEState *ide, DriveInfo **hd_table);
 void macio_ide_register_dma(MACIOIDEState *ide);
 
 #define TYPE_MACIO "macio"
-#define MACIO(obj) OBJECT_CHECK(MacIOState, (obj), TYPE_MACIO)
+typedef struct MacIOState MacIOState;
+DECLARE_INSTANCE_CHECKER(MacIOState, MACIO,
+                         TYPE_MACIO)
 
-typedef struct MacIOState {
+struct MacIOState {
     /*< private >*/
     PCIDevice parent;
     /*< public >*/
@@ -88,13 +95,14 @@ typedef struct MacIOState {
     DBDMAState dbdma;
     ESCCState escc;
     uint64_t frequency;
-} MacIOState;
+};
 
 #define TYPE_OLDWORLD_MACIO "macio-oldworld"
-#define OLDWORLD_MACIO(obj) \
-    OBJECT_CHECK(OldWorldMacIOState, (obj), TYPE_OLDWORLD_MACIO)
+typedef struct OldWorldMacIOState OldWorldMacIOState;
+DECLARE_INSTANCE_CHECKER(OldWorldMacIOState, OLDWORLD_MACIO,
+                         TYPE_OLDWORLD_MACIO)
 
-typedef struct OldWorldMacIOState {
+struct OldWorldMacIOState {
     /*< private >*/
     MacIOState parent_obj;
     /*< public >*/
@@ -103,13 +111,14 @@ typedef struct OldWorldMacIOState {
 
     MacIONVRAMState nvram;
     MACIOIDEState ide[2];
-} OldWorldMacIOState;
+};
 
 #define TYPE_NEWWORLD_MACIO "macio-newworld"
-#define NEWWORLD_MACIO(obj) \
-    OBJECT_CHECK(NewWorldMacIOState, (obj), TYPE_NEWWORLD_MACIO)
+typedef struct NewWorldMacIOState NewWorldMacIOState;
+DECLARE_INSTANCE_CHECKER(NewWorldMacIOState, NEWWORLD_MACIO,
+                         TYPE_NEWWORLD_MACIO)
 
-typedef struct NewWorldMacIOState {
+struct NewWorldMacIOState {
     /*< private >*/
     MacIOState parent_obj;
     /*< public >*/
@@ -119,6 +128,6 @@ typedef struct NewWorldMacIOState {
     OpenPICState *pic;
     MACIOIDEState ide[2];
     MacIOGPIOState gpio;
-} NewWorldMacIOState;
+};
 
 #endif /* MACIO_H */
diff --git a/include/hw/misc/macio/pmu.h b/include/hw/misc/macio/pmu.h
index 72f75612b6..0d1a5c1406 100644
--- a/include/hw/misc/macio/pmu.h
+++ b/include/hw/misc/macio/pmu.h
@@ -12,6 +12,7 @@
 
 #include "hw/misc/mos6522.h"
 #include "hw/misc/macio/gpio.h"
+#include "qom/object.h"
 
 /*
  * PMU commands
@@ -173,20 +174,21 @@ typedef enum {
 } PMUCmdState;
 
 /* MOS6522 PMU */
-typedef struct MOS6522PMUState {
+struct MOS6522PMUState {
     /*< private >*/
     MOS6522State parent_obj;
-} MOS6522PMUState;
+};
+typedef struct MOS6522PMUState MOS6522PMUState;
 
 #define TYPE_MOS6522_PMU "mos6522-pmu"
-#define MOS6522_PMU(obj) OBJECT_CHECK(MOS6522PMUState, (obj), \
-                                      TYPE_MOS6522_PMU)
+DECLARE_INSTANCE_CHECKER(MOS6522PMUState, MOS6522_PMU,
+                         TYPE_MOS6522_PMU)
 /**
  * PMUState:
  * @last_b: last value of B register
  */
 
-typedef struct PMUState {
+struct PMUState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -228,9 +230,11 @@ typedef struct PMUState {
 
     /* GPIO */
     MacIOGPIOState *gpio;
-} PMUState;
+};
+typedef struct PMUState PMUState;
 
 #define TYPE_VIA_PMU "via-pmu"
-#define VIA_PMU(obj) OBJECT_CHECK(PMUState, (obj), TYPE_VIA_PMU)
+DECLARE_INSTANCE_CHECKER(PMUState, VIA_PMU,
+                         TYPE_VIA_PMU)
 
 #endif /* PMU_H */
diff --git a/include/hw/misc/max111x.h b/include/hw/misc/max111x.h
index af7f1017ef..6350a3f7c0 100644
--- a/include/hw/misc/max111x.h
+++ b/include/hw/misc/max111x.h
@@ -14,6 +14,7 @@
 #define HW_MISC_MAX111X_H
 
 #include "hw/ssi/ssi.h"
+#include "qom/object.h"
 
 /*
  * This is a model of the Maxim MAX1110/1111 ADC chip, which for QEMU
@@ -31,7 +32,7 @@
  *  + the interrupt line is not correctly implemented, and will never
  *    be lowered once it has been asserted.
  */
-typedef struct {
+struct MAX111xState {
     SSISlave parent_obj;
 
     qemu_irq interrupt;
@@ -43,12 +44,13 @@ typedef struct {
 
     uint8_t input[8];
     int inputs, com;
-} MAX111xState;
+};
+typedef struct MAX111xState MAX111xState;
 
 #define TYPE_MAX_111X "max111x"
 
-#define MAX_111X(obj) \
-    OBJECT_CHECK(MAX111xState, (obj), TYPE_MAX_111X)
+DECLARE_INSTANCE_CHECKER(MAX111xState, MAX_111X,
+                         TYPE_MAX_111X)
 
 #define TYPE_MAX_1110 "max1110"
 #define TYPE_MAX_1111 "max1111"
diff --git a/include/hw/misc/mips_cmgcr.h b/include/hw/misc/mips_cmgcr.h
index 3e6e223273..923df4f112 100644
--- a/include/hw/misc/mips_cmgcr.h
+++ b/include/hw/misc/mips_cmgcr.h
@@ -11,9 +11,12 @@
 #define MIPS_CMGCR_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_MIPS_GCR "mips-gcr"
-#define MIPS_GCR(obj) OBJECT_CHECK(MIPSGCRState, (obj), TYPE_MIPS_GCR)
+typedef struct MIPSGCRState MIPSGCRState;
+DECLARE_INSTANCE_CHECKER(MIPSGCRState, MIPS_GCR,
+                         TYPE_MIPS_GCR)
 
 #define GCR_BASE_ADDR           0x1fbf8000ULL
 #define GCR_ADDRSPACE_SZ        0x8000
@@ -70,7 +73,6 @@ struct MIPSGCRVPState {
     uint64_t reset_base;
 };
 
-typedef struct MIPSGCRState MIPSGCRState;
 struct MIPSGCRState {
     SysBusDevice parent_obj;
 
diff --git a/include/hw/misc/mips_cpc.h b/include/hw/misc/mips_cpc.h
index 3f670578b0..7dc188e8a2 100644
--- a/include/hw/misc/mips_cpc.h
+++ b/include/hw/misc/mips_cpc.h
@@ -21,6 +21,7 @@
 #define MIPS_CPC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define CPC_ADDRSPACE_SZ    0x6000
 
@@ -34,9 +35,11 @@
 #define CPC_VP_RUNNING_OFS  0x30
 
 #define TYPE_MIPS_CPC "mips-cpc"
-#define MIPS_CPC(obj) OBJECT_CHECK(MIPSCPCState, (obj), TYPE_MIPS_CPC)
+typedef struct MIPSCPCState MIPSCPCState;
+DECLARE_INSTANCE_CHECKER(MIPSCPCState, MIPS_CPC,
+                         TYPE_MIPS_CPC)
 
-typedef struct MIPSCPCState {
+struct MIPSCPCState {
     SysBusDevice parent_obj;
 
     uint32_t num_vp;
@@ -44,6 +47,6 @@ typedef struct MIPSCPCState {
 
     MemoryRegion mr;
     uint64_t vp_running; /* Indicates which VPs are in the run state */
-} MIPSCPCState;
+};
 
 #endif /* MIPS_CPC_H */
diff --git a/include/hw/misc/mips_itu.h b/include/hw/misc/mips_itu.h
index c44e7672b6..7c19f61fbb 100644
--- a/include/hw/misc/mips_itu.h
+++ b/include/hw/misc/mips_itu.h
@@ -21,9 +21,12 @@
 #define MIPS_ITU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_MIPS_ITU "mips-itu"
-#define MIPS_ITU(obj) OBJECT_CHECK(MIPSITUState, (obj), TYPE_MIPS_ITU)
+typedef struct MIPSITUState MIPSITUState;
+DECLARE_INSTANCE_CHECKER(MIPSITUState, MIPS_ITU,
+                         TYPE_MIPS_ITU)
 
 #define ITC_CELL_DEPTH_SHIFT 2
 #define ITC_CELL_DEPTH (1u << ITC_CELL_DEPTH_SHIFT)
@@ -51,7 +54,7 @@ typedef struct ITCStorageCell {
 
 #define ITC_ADDRESSMAP_NUM 2
 
-typedef struct MIPSITUState {
+struct MIPSITUState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -74,7 +77,7 @@ typedef struct MIPSITUState {
     bool saar_present;
     void *saar;
 
-} MIPSITUState;
+};
 
 /* Get ITC Configuration Tag memory region. */
 MemoryRegion *mips_itu_get_tag_region(MIPSITUState *itu);
diff --git a/include/hw/misc/mos6522.h b/include/hw/misc/mos6522.h
index 6b25ffd439..f73271ba67 100644
--- a/include/hw/misc/mos6522.h
+++ b/include/hw/misc/mos6522.h
@@ -30,6 +30,7 @@
 #include "exec/memory.h"
 #include "hw/sysbus.h"
 #include "hw/input/adb.h"
+#include "qom/object.h"
 
 /* Bits in ACR */
 #define SR_CTRL            0x1c    /* Shift register control bits */
@@ -99,7 +100,7 @@ typedef struct MOS6522Timer {
  * @last_b: last value of B register
  * @last_acr: last value of ACR register
  */
-typedef struct MOS6522State {
+struct MOS6522State {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -120,12 +121,15 @@ typedef struct MOS6522State {
     uint64_t frequency;
 
     qemu_irq irq;
-} MOS6522State;
+};
+typedef struct MOS6522State MOS6522State;
 
 #define TYPE_MOS6522 "mos6522"
-#define MOS6522(obj) OBJECT_CHECK(MOS6522State, (obj), TYPE_MOS6522)
+typedef struct MOS6522DeviceClass MOS6522DeviceClass;
+DECLARE_OBJ_CHECKERS(MOS6522State, MOS6522DeviceClass,
+                     MOS6522, TYPE_MOS6522)
 
-typedef struct MOS6522DeviceClass {
+struct MOS6522DeviceClass {
     DeviceClass parent_class;
 
     DeviceReset parent_reset;
@@ -138,12 +142,8 @@ typedef struct MOS6522DeviceClass {
     uint64_t (*get_timer2_counter_value)(MOS6522State *dev, MOS6522Timer *ti);
     uint64_t (*get_timer1_load_time)(MOS6522State *dev, MOS6522Timer *ti);
     uint64_t (*get_timer2_load_time)(MOS6522State *dev, MOS6522Timer *ti);
-} MOS6522DeviceClass;
+};
 
-#define MOS6522_CLASS(cls) \
-    OBJECT_CLASS_CHECK(MOS6522DeviceClass, (cls), TYPE_MOS6522)
-#define MOS6522_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(MOS6522DeviceClass, (obj), TYPE_MOS6522)
 
 extern const VMStateDescription vmstate_mos6522;
 
diff --git a/include/hw/misc/mps2-fpgaio.h b/include/hw/misc/mps2-fpgaio.h
index 69e265cd4b..991f5b731e 100644
--- a/include/hw/misc/mps2-fpgaio.h
+++ b/include/hw/misc/mps2-fpgaio.h
@@ -22,11 +22,14 @@
 #define MPS2_FPGAIO_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_MPS2_FPGAIO "mps2-fpgaio"
-#define MPS2_FPGAIO(obj) OBJECT_CHECK(MPS2FPGAIO, (obj), TYPE_MPS2_FPGAIO)
+typedef struct MPS2FPGAIO MPS2FPGAIO;
+DECLARE_INSTANCE_CHECKER(MPS2FPGAIO, MPS2_FPGAIO,
+                         TYPE_MPS2_FPGAIO)
 
-typedef struct {
+struct MPS2FPGAIO {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -48,6 +51,6 @@ typedef struct {
     /* These hold the CLOCK_VIRTUAL ns tick when the CLK1HZ/CLK100HZ was zero */
     int64_t clk1hz_tick_offset;
     int64_t clk100hz_tick_offset;
-} MPS2FPGAIO;
+};
 
 #endif
diff --git a/include/hw/misc/mps2-scc.h b/include/hw/misc/mps2-scc.h
index 7045473788..445e268b1f 100644
--- a/include/hw/misc/mps2-scc.h
+++ b/include/hw/misc/mps2-scc.h
@@ -13,13 +13,16 @@
 #define MPS2_SCC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_MPS2_SCC "mps2-scc"
-#define MPS2_SCC(obj) OBJECT_CHECK(MPS2SCC, (obj), TYPE_MPS2_SCC)
+typedef struct MPS2SCC MPS2SCC;
+DECLARE_INSTANCE_CHECKER(MPS2SCC, MPS2_SCC,
+                         TYPE_MPS2_SCC)
 
 #define NUM_OSCCLK 3
 
-typedef struct {
+struct MPS2SCC {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -38,6 +41,6 @@ typedef struct {
     uint32_t id;
     uint32_t oscclk[NUM_OSCCLK];
     uint32_t oscclk_reset[NUM_OSCCLK];
-} MPS2SCC;
+};
 
 #endif
diff --git a/include/hw/misc/msf2-sysreg.h b/include/hw/misc/msf2-sysreg.h
index 5993f67b4e..625932354a 100644
--- a/include/hw/misc/msf2-sysreg.h
+++ b/include/hw/misc/msf2-sysreg.h
@@ -26,6 +26,7 @@
 #define HW_MSF2_SYSREG_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 enum {
     ESRAM_CR        = 0x00 / 4,
@@ -61,9 +62,11 @@ enum {
 #define MSF2_SYSREG_MMIO_SIZE     0x300
 
 #define TYPE_MSF2_SYSREG          "msf2-sysreg"
-#define MSF2_SYSREG(obj)  OBJECT_CHECK(MSF2SysregState, (obj), TYPE_MSF2_SYSREG)
+typedef struct MSF2SysregState MSF2SysregState;
+DECLARE_INSTANCE_CHECKER(MSF2SysregState, MSF2_SYSREG,
+                         TYPE_MSF2_SYSREG)
 
-typedef struct MSF2SysregState {
+struct MSF2SysregState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -72,6 +75,6 @@ typedef struct MSF2SysregState {
     uint8_t apb1div;
 
     uint32_t regs[MSF2_SYSREG_MMIO_SIZE / 4];
-} MSF2SysregState;
+};
 
 #endif /* HW_MSF2_SYSREG_H */
diff --git a/include/hw/misc/nrf51_rng.h b/include/hw/misc/nrf51_rng.h
index b0133bf665..7f2263a906 100644
--- a/include/hw/misc/nrf51_rng.h
+++ b/include/hw/misc/nrf51_rng.h
@@ -36,8 +36,11 @@
 
 #include "hw/sysbus.h"
 #include "qemu/timer.h"
+#include "qom/object.h"
 #define TYPE_NRF51_RNG "nrf51_soc.rng"
-#define NRF51_RNG(obj) OBJECT_CHECK(NRF51RNGState, (obj), TYPE_NRF51_RNG)
+typedef struct NRF51RNGState NRF51RNGState;
+DECLARE_INSTANCE_CHECKER(NRF51RNGState, NRF51_RNG,
+                         TYPE_NRF51_RNG)
 
 #define NRF51_RNG_SIZE         0x1000
 
@@ -54,7 +57,7 @@
 #define NRF51_RNG_REG_CONFIG_DECEN 0
 #define NRF51_RNG_REG_VALUE    0x508
 
-typedef struct {
+struct NRF51RNGState {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
@@ -78,7 +81,7 @@ typedef struct {
     uint32_t interrupt_enabled;
     uint32_t filter_enabled;
 
-} NRF51RNGState;
+};
 
 
 #endif /* NRF51_RNG_H */
diff --git a/include/hw/misc/pca9552.h b/include/hw/misc/pca9552.h
index 600356fbf9..b6f4e264fe 100644
--- a/include/hw/misc/pca9552.h
+++ b/include/hw/misc/pca9552.h
@@ -10,15 +10,18 @@
 #define PCA9552_H
 
 #include "hw/i2c/i2c.h"
+#include "qom/object.h"
 
 #define TYPE_PCA9552 "pca9552"
 #define TYPE_PCA955X "pca955x"
-#define PCA955X(obj) OBJECT_CHECK(PCA955xState, (obj), TYPE_PCA955X)
+typedef struct PCA955xState PCA955xState;
+DECLARE_INSTANCE_CHECKER(PCA955xState, PCA955X,
+                         TYPE_PCA955X)
 
 #define PCA955X_NR_REGS 10
 #define PCA955X_PIN_COUNT_MAX 16
 
-typedef struct PCA955xState {
+struct PCA955xState {
     /*< private >*/
     I2CSlave i2c;
     /*< public >*/
@@ -29,6 +32,6 @@ typedef struct PCA955xState {
     uint8_t regs[PCA955X_NR_REGS];
     qemu_irq gpio[PCA955X_PIN_COUNT_MAX];
     char *description; /* For debugging purpose only */
-} PCA955xState;
+};
 
 #endif
diff --git a/include/hw/misc/stm32f2xx_syscfg.h b/include/hw/misc/stm32f2xx_syscfg.h
index 84e06fdecf..82ccd7cc24 100644
--- a/include/hw/misc/stm32f2xx_syscfg.h
+++ b/include/hw/misc/stm32f2xx_syscfg.h
@@ -26,6 +26,7 @@
 #define HW_STM32F2XX_SYSCFG_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define SYSCFG_MEMRMP  0x00
 #define SYSCFG_PMC     0x04
@@ -36,10 +37,11 @@
 #define SYSCFG_CMPCR   0x20
 
 #define TYPE_STM32F2XX_SYSCFG "stm32f2xx-syscfg"
-#define STM32F2XX_SYSCFG(obj) \
-    OBJECT_CHECK(STM32F2XXSyscfgState, (obj), TYPE_STM32F2XX_SYSCFG)
+typedef struct STM32F2XXSyscfgState STM32F2XXSyscfgState;
+DECLARE_INSTANCE_CHECKER(STM32F2XXSyscfgState, STM32F2XX_SYSCFG,
+                         TYPE_STM32F2XX_SYSCFG)
 
-typedef struct {
+struct STM32F2XXSyscfgState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -55,6 +57,6 @@ typedef struct {
     uint32_t syscfg_cmpcr;
 
     qemu_irq irq;
-} STM32F2XXSyscfgState;
+};
 
 #endif /* HW_STM32F2XX_SYSCFG_H */
diff --git a/include/hw/misc/stm32f4xx_exti.h b/include/hw/misc/stm32f4xx_exti.h
index 707036a41b..4987c286ed 100644
--- a/include/hw/misc/stm32f4xx_exti.h
+++ b/include/hw/misc/stm32f4xx_exti.h
@@ -27,6 +27,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/hw.h"
+#include "qom/object.h"
 
 #define EXTI_IMR   0x00
 #define EXTI_EMR   0x04
@@ -36,13 +37,14 @@
 #define EXTI_PR    0x14
 
 #define TYPE_STM32F4XX_EXTI "stm32f4xx-exti"
-#define STM32F4XX_EXTI(obj) \
-    OBJECT_CHECK(STM32F4xxExtiState, (obj), TYPE_STM32F4XX_EXTI)
+typedef struct STM32F4xxExtiState STM32F4xxExtiState;
+DECLARE_INSTANCE_CHECKER(STM32F4xxExtiState, STM32F4XX_EXTI,
+                         TYPE_STM32F4XX_EXTI)
 
 #define NUM_GPIO_EVENT_IN_LINES 16
 #define NUM_INTERRUPT_OUT_LINES 16
 
-typedef struct {
+struct STM32F4xxExtiState {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
@@ -55,6 +57,6 @@ typedef struct {
     uint32_t exti_pr;
 
     qemu_irq irq[NUM_INTERRUPT_OUT_LINES];
-} STM32F4xxExtiState;
+};
 
 #endif
diff --git a/include/hw/misc/stm32f4xx_syscfg.h b/include/hw/misc/stm32f4xx_syscfg.h
index c62c6629e5..c3d89d4536 100644
--- a/include/hw/misc/stm32f4xx_syscfg.h
+++ b/include/hw/misc/stm32f4xx_syscfg.h
@@ -27,6 +27,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/hw.h"
+#include "qom/object.h"
 
 #define SYSCFG_MEMRMP  0x00
 #define SYSCFG_PMC     0x04
@@ -37,12 +38,13 @@
 #define SYSCFG_CMPCR   0x20
 
 #define TYPE_STM32F4XX_SYSCFG "stm32f4xx-syscfg"
-#define STM32F4XX_SYSCFG(obj) \
-    OBJECT_CHECK(STM32F4xxSyscfgState, (obj), TYPE_STM32F4XX_SYSCFG)
+typedef struct STM32F4xxSyscfgState STM32F4xxSyscfgState;
+DECLARE_INSTANCE_CHECKER(STM32F4xxSyscfgState, STM32F4XX_SYSCFG,
+                         TYPE_STM32F4XX_SYSCFG)
 
 #define SYSCFG_NUM_EXTICR 4
 
-typedef struct {
+struct STM32F4xxSyscfgState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -56,6 +58,6 @@ typedef struct {
 
     qemu_irq irq;
     qemu_irq gpio_out[16];
-} STM32F4xxSyscfgState;
+};
 
 #endif
diff --git a/include/hw/misc/tz-mpc.h b/include/hw/misc/tz-mpc.h
index 6f15945410..34e45fdb97 100644
--- a/include/hw/misc/tz-mpc.h
+++ b/include/hw/misc/tz-mpc.h
@@ -32,15 +32,17 @@
 #define TZ_MPC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_TZ_MPC "tz-mpc"
-#define TZ_MPC(obj) OBJECT_CHECK(TZMPC, (obj), TYPE_TZ_MPC)
+typedef struct TZMPC TZMPC;
+DECLARE_INSTANCE_CHECKER(TZMPC, TZ_MPC,
+                         TYPE_TZ_MPC)
 
 #define TZ_NUM_PORTS 16
 
 #define TYPE_TZ_MPC_IOMMU_MEMORY_REGION "tz-mpc-iommu-memory-region"
 
-typedef struct TZMPC TZMPC;
 
 struct TZMPC {
     /*< private >*/
diff --git a/include/hw/misc/tz-msc.h b/include/hw/misc/tz-msc.h
index 116b96ae9b..7169f330ff 100644
--- a/include/hw/misc/tz-msc.h
+++ b/include/hw/misc/tz-msc.h
@@ -52,11 +52,14 @@
 
 #include "hw/sysbus.h"
 #include "target/arm/idau.h"
+#include "qom/object.h"
 
 #define TYPE_TZ_MSC "tz-msc"
-#define TZ_MSC(obj) OBJECT_CHECK(TZMSC, (obj), TYPE_TZ_MSC)
+typedef struct TZMSC TZMSC;
+DECLARE_INSTANCE_CHECKER(TZMSC, TZ_MSC,
+                         TYPE_TZ_MSC)
 
-typedef struct TZMSC {
+struct TZMSC {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -74,6 +77,6 @@ typedef struct TZMSC {
     AddressSpace downstream_as;
     MemoryRegion upstream;
     IDAUInterface *idau;
-} TZMSC;
+};
 
 #endif
diff --git a/include/hw/misc/tz-ppc.h b/include/hw/misc/tz-ppc.h
index 080d6e2ec1..b5251b715e 100644
--- a/include/hw/misc/tz-ppc.h
+++ b/include/hw/misc/tz-ppc.h
@@ -66,13 +66,15 @@
 #define TZ_PPC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_TZ_PPC "tz-ppc"
-#define TZ_PPC(obj) OBJECT_CHECK(TZPPC, (obj), TYPE_TZ_PPC)
+typedef struct TZPPC TZPPC;
+DECLARE_INSTANCE_CHECKER(TZPPC, TZ_PPC,
+                         TYPE_TZ_PPC)
 
 #define TZ_NUM_PORTS 16
 
-typedef struct TZPPC TZPPC;
 
 typedef struct TZPPCPort {
     TZPPC *ppc;
diff --git a/include/hw/misc/unimp.h b/include/hw/misc/unimp.h
index c63968a2cd..7c724bab94 100644
--- a/include/hw/misc/unimp.h
+++ b/include/hw/misc/unimp.h
@@ -11,19 +11,21 @@
 #include "hw/qdev-properties.h"
 #include "hw/sysbus.h"
 #include "qapi/error.h"
+#include "qom/object.h"
 
 #define TYPE_UNIMPLEMENTED_DEVICE "unimplemented-device"
 
-#define UNIMPLEMENTED_DEVICE(obj) \
-    OBJECT_CHECK(UnimplementedDeviceState, (obj), TYPE_UNIMPLEMENTED_DEVICE)
+typedef struct UnimplementedDeviceState UnimplementedDeviceState;
+DECLARE_INSTANCE_CHECKER(UnimplementedDeviceState, UNIMPLEMENTED_DEVICE,
+                         TYPE_UNIMPLEMENTED_DEVICE)
 
-typedef struct {
+struct UnimplementedDeviceState {
     SysBusDevice parent_obj;
     MemoryRegion iomem;
     unsigned offset_fmt_width;
     char *name;
     uint64_t size;
-} UnimplementedDeviceState;
+};
 
 /**
  * create_unimplemented_device: create and map a dummy device
diff --git a/include/hw/misc/vmcoreinfo.h b/include/hw/misc/vmcoreinfo.h
index d4f3d3a91c..ebada6617a 100644
--- a/include/hw/misc/vmcoreinfo.h
+++ b/include/hw/misc/vmcoreinfo.h
@@ -14,18 +14,21 @@
 
 #include "hw/qdev-core.h"
 #include "standard-headers/linux/qemu_fw_cfg.h"
+#include "qom/object.h"
 
 #define VMCOREINFO_DEVICE "vmcoreinfo"
-#define VMCOREINFO(obj) OBJECT_CHECK(VMCoreInfoState, (obj), VMCOREINFO_DEVICE)
+typedef struct VMCoreInfoState VMCoreInfoState;
+DECLARE_INSTANCE_CHECKER(VMCoreInfoState, VMCOREINFO,
+                         VMCOREINFO_DEVICE)
 
 typedef struct fw_cfg_vmcoreinfo FWCfgVMCoreInfo;
 
-typedef struct VMCoreInfoState {
+struct VMCoreInfoState {
     DeviceClass parent_obj;
 
     bool has_vmcoreinfo;
     FWCfgVMCoreInfo vmcoreinfo;
-} VMCoreInfoState;
+};
 
 /* returns NULL unless there is exactly one device */
 static inline VMCoreInfoState *vmcoreinfo_find(void)
diff --git a/include/hw/misc/zynq-xadc.h b/include/hw/misc/zynq-xadc.h
index f1a410a376..052f47954f 100644
--- a/include/hw/misc/zynq-xadc.h
+++ b/include/hw/misc/zynq-xadc.h
@@ -16,6 +16,7 @@
 #define ZYNQ_XADC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define ZYNQ_XADC_MMIO_SIZE     0x0020
 #define ZYNQ_XADC_NUM_IO_REGS   (ZYNQ_XADC_MMIO_SIZE / 4)
@@ -23,10 +24,11 @@
 #define ZYNQ_XADC_FIFO_DEPTH    15
 
 #define TYPE_ZYNQ_XADC          "xlnx,zynq-xadc"
-#define ZYNQ_XADC(obj) \
-    OBJECT_CHECK(ZynqXADCState, (obj), TYPE_ZYNQ_XADC)
+typedef struct ZynqXADCState ZynqXADCState;
+DECLARE_INSTANCE_CHECKER(ZynqXADCState, ZYNQ_XADC,
+                         TYPE_ZYNQ_XADC)
 
-typedef struct ZynqXADCState {
+struct ZynqXADCState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -41,6 +43,6 @@ typedef struct ZynqXADCState {
 
     struct IRQState *qemu_irq;
 
-} ZynqXADCState;
+};
 
 #endif /* ZYNQ_XADC_H */
diff --git a/include/hw/net/allwinner-sun8i-emac.h b/include/hw/net/allwinner-sun8i-emac.h
index dd1d7b96cd..89e56b815b 100644
--- a/include/hw/net/allwinner-sun8i-emac.h
+++ b/include/hw/net/allwinner-sun8i-emac.h
@@ -30,15 +30,16 @@
  */
 
 #define TYPE_AW_SUN8I_EMAC "allwinner-sun8i-emac"
-#define AW_SUN8I_EMAC(obj) \
-    OBJECT_CHECK(AwSun8iEmacState, (obj), TYPE_AW_SUN8I_EMAC)
+typedef struct AwSun8iEmacState AwSun8iEmacState;
+DECLARE_INSTANCE_CHECKER(AwSun8iEmacState, AW_SUN8I_EMAC,
+                         TYPE_AW_SUN8I_EMAC)
 
 /** @} */
 
 /**
  * Allwinner Sun8i EMAC object instance state
  */
-typedef struct AwSun8iEmacState {
+struct AwSun8iEmacState {
     /*< private >*/
     SysBusDevice  parent_obj;
     /*< public >*/
@@ -100,6 +101,6 @@ typedef struct AwSun8iEmacState {
 
     /** @} */
 
-} AwSun8iEmacState;
+};
 
 #endif /* HW_NET_ALLWINNER_SUN8I_H */
diff --git a/include/hw/net/allwinner_emac.h b/include/hw/net/allwinner_emac.h
index 5013207d15..f5f5b67939 100644
--- a/include/hw/net/allwinner_emac.h
+++ b/include/hw/net/allwinner_emac.h
@@ -28,9 +28,12 @@
 #include "qemu/fifo8.h"
 #include "hw/net/mii.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_AW_EMAC "allwinner-emac"
-#define AW_EMAC(obj) OBJECT_CHECK(AwEmacState, (obj), TYPE_AW_EMAC)
+typedef struct AwEmacState AwEmacState;
+DECLARE_INSTANCE_CHECKER(AwEmacState, AW_EMAC,
+                         TYPE_AW_EMAC)
 
 /*
  * Allwinner EMAC register list
@@ -144,7 +147,7 @@ typedef struct RTL8201CPState {
     uint16_t anlpar;
 } RTL8201CPState;
 
-typedef struct AwEmacState {
+struct AwEmacState {
     /*< private >*/
     SysBusDevice  parent_obj;
     /*< public >*/
@@ -171,6 +174,6 @@ typedef struct AwEmacState {
     Fifo8          tx_fifo[NUM_TX_FIFOS];
     uint32_t       tx_length[NUM_TX_FIFOS];
     uint32_t       tx_channel;
-} AwEmacState;
+};
 
 #endif
diff --git a/include/hw/net/cadence_gem.h b/include/hw/net/cadence_gem.h
index 54e646ff79..dff1083738 100644
--- a/include/hw/net/cadence_gem.h
+++ b/include/hw/net/cadence_gem.h
@@ -24,9 +24,12 @@
 
 #ifndef CADENCE_GEM_H
 #define CADENCE_GEM_H
+#include "qom/object.h"
 
 #define TYPE_CADENCE_GEM "cadence_gem"
-#define CADENCE_GEM(obj) OBJECT_CHECK(CadenceGEMState, (obj), TYPE_CADENCE_GEM)
+typedef struct CadenceGEMState CadenceGEMState;
+DECLARE_INSTANCE_CHECKER(CadenceGEMState, CADENCE_GEM,
+                         TYPE_CADENCE_GEM)
 
 #include "net/net.h"
 #include "hw/sysbus.h"
@@ -43,7 +46,7 @@
 #define MAX_JUMBO_FRAME_SIZE_MASK 0x3FFF
 #define MAX_FRAME_SIZE MAX_JUMBO_FRAME_SIZE_MASK
 
-typedef struct CadenceGEMState {
+struct CadenceGEMState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -89,6 +92,6 @@ typedef struct CadenceGEMState {
     uint32_t rx_desc[MAX_PRIORITY_QUEUES][DESC_MAX_NUM_WORDS];
 
     bool sar_active[4];
-} CadenceGEMState;
+};
 
 #endif
diff --git a/include/hw/net/ftgmac100.h b/include/hw/net/ftgmac100.h
index ab37e7b2b8..c6b1c11fca 100644
--- a/include/hw/net/ftgmac100.h
+++ b/include/hw/net/ftgmac100.h
@@ -9,9 +9,12 @@
 
 #ifndef FTGMAC100_H
 #define FTGMAC100_H
+#include "qom/object.h"
 
 #define TYPE_FTGMAC100 "ftgmac100"
-#define FTGMAC100(obj) OBJECT_CHECK(FTGMAC100State, (obj), TYPE_FTGMAC100)
+typedef struct FTGMAC100State FTGMAC100State;
+DECLARE_INSTANCE_CHECKER(FTGMAC100State, FTGMAC100,
+                         TYPE_FTGMAC100)
 
 #include "hw/sysbus.h"
 #include "net/net.h"
@@ -21,7 +24,7 @@
  */
 #define FTGMAC100_MAX_FRAME_SIZE    9220
 
-typedef struct FTGMAC100State {
+struct FTGMAC100State {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -64,15 +67,17 @@ typedef struct FTGMAC100State {
     bool aspeed;
     uint32_t txdes0_edotr;
     uint32_t rxdes0_edorr;
-} FTGMAC100State;
+};
 
 #define TYPE_ASPEED_MII "aspeed-mmi"
-#define ASPEED_MII(obj) OBJECT_CHECK(AspeedMiiState, (obj), TYPE_ASPEED_MII)
+typedef struct AspeedMiiState AspeedMiiState;
+DECLARE_INSTANCE_CHECKER(AspeedMiiState, ASPEED_MII,
+                         TYPE_ASPEED_MII)
 
 /*
  * AST2600 MII controller
  */
-typedef struct AspeedMiiState {
+struct AspeedMiiState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -81,6 +86,6 @@ typedef struct AspeedMiiState {
     MemoryRegion iomem;
     uint32_t phycr;
     uint32_t phydata;
-} AspeedMiiState;
+};
 
 #endif
diff --git a/include/hw/net/imx_fec.h b/include/hw/net/imx_fec.h
index 9f03034b89..ffdbc304b6 100644
--- a/include/hw/net/imx_fec.h
+++ b/include/hw/net/imx_fec.h
@@ -23,9 +23,12 @@
 
 #ifndef IMX_FEC_H
 #define IMX_FEC_H
+#include "qom/object.h"
 
 #define TYPE_IMX_FEC "imx.fec"
-#define IMX_FEC(obj) OBJECT_CHECK(IMXFECState, (obj), TYPE_IMX_FEC)
+typedef struct IMXFECState IMXFECState;
+DECLARE_INSTANCE_CHECKER(IMXFECState, IMX_FEC,
+                         TYPE_IMX_FEC)
 
 #define TYPE_IMX_ENET "imx.enet"
 
@@ -247,7 +250,7 @@ typedef struct {
 
 #define FSL_IMX25_FEC_SIZE      0x4000
 
-typedef struct IMXFECState {
+struct IMXFECState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -274,6 +277,6 @@ typedef struct IMXFECState {
 
     /* Buffer used to assemble a Tx frame */
     uint8_t frame[ENET_MAX_FRAME_SIZE];
-} IMXFECState;
+};
 
 #endif
diff --git a/include/hw/net/lance.h b/include/hw/net/lance.h
index 0357f5f65c..f645d6af67 100644
--- a/include/hw/net/lance.h
+++ b/include/hw/net/lance.h
@@ -32,15 +32,17 @@
 #include "net/net.h"
 #include "hw/net/pcnet.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_LANCE "lance"
-#define SYSBUS_PCNET(obj) \
-    OBJECT_CHECK(SysBusPCNetState, (obj), TYPE_LANCE)
+typedef struct SysBusPCNetState SysBusPCNetState;
+DECLARE_INSTANCE_CHECKER(SysBusPCNetState, SYSBUS_PCNET,
+                         TYPE_LANCE)
 
-typedef struct {
+struct SysBusPCNetState {
     SysBusDevice parent_obj;
 
     PCNetState state;
-} SysBusPCNetState;
+};
 
 #endif
diff --git a/include/hw/net/lasi_82596.h b/include/hw/net/lasi_82596.h
index e76ef8308e..7b62b04833 100644
--- a/include/hw/net/lasi_82596.h
+++ b/include/hw/net/lasi_82596.h
@@ -10,18 +10,20 @@
 
 #include "net/net.h"
 #include "hw/net/i82596.h"
+#include "qom/object.h"
 
 #define TYPE_LASI_82596 "lasi_82596"
-#define SYSBUS_I82596(obj) \
-    OBJECT_CHECK(SysBusI82596State, (obj), TYPE_LASI_82596)
+typedef struct SysBusI82596State SysBusI82596State;
+DECLARE_INSTANCE_CHECKER(SysBusI82596State, SYSBUS_I82596,
+                         TYPE_LASI_82596)
 
-typedef struct {
+struct SysBusI82596State {
     SysBusDevice parent_obj;
 
     I82596State state;
     uint16_t last_val;
     int val_index:1;
-} SysBusI82596State;
+};
 
 SysBusI82596State *lasi_82596_init(MemoryRegion *addr_space,
                                     hwaddr hpa, qemu_irq irq);
diff --git a/include/hw/net/msf2-emac.h b/include/hw/net/msf2-emac.h
index 37966d3a81..68194d798c 100644
--- a/include/hw/net/msf2-emac.h
+++ b/include/hw/net/msf2-emac.h
@@ -26,15 +26,17 @@
 #include "exec/memory.h"
 #include "net/net.h"
 #include "net/eth.h"
+#include "qom/object.h"
 
 #define TYPE_MSS_EMAC "msf2-emac"
-#define MSS_EMAC(obj) \
-    OBJECT_CHECK(MSF2EmacState, (obj), TYPE_MSS_EMAC)
+typedef struct MSF2EmacState MSF2EmacState;
+DECLARE_INSTANCE_CHECKER(MSF2EmacState, MSS_EMAC,
+                         TYPE_MSS_EMAC)
 
 #define R_MAX         (0x1a0 / 4)
 #define PHY_MAX_REGS  32
 
-typedef struct MSF2EmacState {
+struct MSF2EmacState {
     SysBusDevice parent;
 
     MemoryRegion mmio;
@@ -50,4 +52,4 @@ typedef struct MSF2EmacState {
     uint16_t phy_regs[PHY_MAX_REGS];
 
     uint32_t regs[R_MAX];
-} MSF2EmacState;
+};
diff --git a/include/hw/nmi.h b/include/hw/nmi.h
index fe37ce3ad8..fff41bebc6 100644
--- a/include/hw/nmi.h
+++ b/include/hw/nmi.h
@@ -26,20 +26,19 @@
 
 #define TYPE_NMI "nmi"
 
-#define NMI_CLASS(klass) \
-     OBJECT_CLASS_CHECK(NMIClass, (klass), TYPE_NMI)
-#define NMI_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(NMIClass, (obj), TYPE_NMI)
+typedef struct NMIClass NMIClass;
+DECLARE_CLASS_CHECKERS(NMIClass, NMI,
+                       TYPE_NMI)
 #define NMI(obj) \
      INTERFACE_CHECK(NMIState, (obj), TYPE_NMI)
 
 typedef struct NMIState NMIState;
 
-typedef struct NMIClass {
+struct NMIClass {
     InterfaceClass parent_class;
 
     void (*nmi_monitor_handler)(NMIState *n, int cpu_index, Error **errp);
-} NMIClass;
+};
 
 void nmi_monitor_handle(int cpu_index, Error **errp);
 
diff --git a/include/hw/nubus/mac-nubus-bridge.h b/include/hw/nubus/mac-nubus-bridge.h
index ce9c789d99..6856d7e095 100644
--- a/include/hw/nubus/mac-nubus-bridge.h
+++ b/include/hw/nubus/mac-nubus-bridge.h
@@ -10,15 +10,17 @@
 #define HW_NUBUS_MAC_H
 
 #include "hw/nubus/nubus.h"
+#include "qom/object.h"
 
 #define TYPE_MAC_NUBUS_BRIDGE "mac-nubus-bridge"
-#define MAC_NUBUS_BRIDGE(obj) OBJECT_CHECK(MacNubusState, (obj), \
-                                           TYPE_MAC_NUBUS_BRIDGE)
+typedef struct MacNubusState MacNubusState;
+DECLARE_INSTANCE_CHECKER(MacNubusState, MAC_NUBUS_BRIDGE,
+                         TYPE_MAC_NUBUS_BRIDGE)
 
-typedef struct MacNubusState {
+struct MacNubusState {
     SysBusDevice sysbus_dev;
 
     NubusBus *bus;
-} MacNubusState;
+};
 
 #endif
diff --git a/include/hw/nubus/nubus.h b/include/hw/nubus/nubus.h
index c350948262..9370f0d8f0 100644
--- a/include/hw/nubus/nubus.h
+++ b/include/hw/nubus/nubus.h
@@ -11,6 +11,7 @@
 
 #include "hw/qdev-properties.h"
 #include "exec/address-spaces.h"
+#include "qom/object.h"
 
 #define NUBUS_SUPER_SLOT_SIZE 0x10000000U
 #define NUBUS_SUPER_SLOT_NB   0x9
@@ -22,24 +23,27 @@
 #define NUBUS_LAST_SLOT       0xF
 
 #define TYPE_NUBUS_DEVICE "nubus-device"
-#define NUBUS_DEVICE(obj) \
-     OBJECT_CHECK(NubusDevice, (obj), TYPE_NUBUS_DEVICE)
+typedef struct NubusDevice NubusDevice;
+DECLARE_INSTANCE_CHECKER(NubusDevice, NUBUS_DEVICE,
+                         TYPE_NUBUS_DEVICE)
 
 #define TYPE_NUBUS_BUS "nubus-bus"
-#define NUBUS_BUS(obj) OBJECT_CHECK(NubusBus, (obj), TYPE_NUBUS_BUS)
+typedef struct NubusBus NubusBus;
+DECLARE_INSTANCE_CHECKER(NubusBus, NUBUS_BUS,
+                         TYPE_NUBUS_BUS)
 
 #define TYPE_NUBUS_BRIDGE "nubus-bridge"
 
-typedef struct NubusBus {
+struct NubusBus {
     BusState qbus;
 
     MemoryRegion super_slot_io;
     MemoryRegion slot_io;
 
     int current_slot;
-} NubusBus;
+};
 
-typedef struct NubusDevice {
+struct NubusDevice {
     DeviceState qdev;
 
     int slot_nb;
@@ -60,7 +64,7 @@ typedef struct NubusDevice {
 
     MemoryRegion rom_io;
     const uint8_t *rom;
-} NubusDevice;
+};
 
 void nubus_register_rom(NubusDevice *dev, const uint8_t *rom, uint32_t size,
                         int revision, int format, uint8_t byte_lanes);
diff --git a/include/hw/nvram/fw_cfg.h b/include/hw/nvram/fw_cfg.h
index f190c428e8..f85393400c 100644
--- a/include/hw/nvram/fw_cfg.h
+++ b/include/hw/nvram/fw_cfg.h
@@ -5,24 +5,25 @@
 #include "standard-headers/linux/qemu_fw_cfg.h"
 #include "hw/sysbus.h"
 #include "sysemu/dma.h"
+#include "qom/object.h"
 
 #define TYPE_FW_CFG     "fw_cfg"
 #define TYPE_FW_CFG_IO  "fw_cfg_io"
 #define TYPE_FW_CFG_MEM "fw_cfg_mem"
 #define TYPE_FW_CFG_DATA_GENERATOR_INTERFACE "fw_cfg-data-generator"
 
-#define FW_CFG(obj)     OBJECT_CHECK(FWCfgState,    (obj), TYPE_FW_CFG)
-#define FW_CFG_IO(obj)  OBJECT_CHECK(FWCfgIoState,  (obj), TYPE_FW_CFG_IO)
-#define FW_CFG_MEM(obj) OBJECT_CHECK(FWCfgMemState, (obj), TYPE_FW_CFG_MEM)
+DECLARE_INSTANCE_CHECKER(FWCfgState, FW_CFG,
+                         TYPE_FW_CFG)
+DECLARE_INSTANCE_CHECKER(FWCfgIoState, FW_CFG_IO,
+                         TYPE_FW_CFG_IO)
+DECLARE_INSTANCE_CHECKER(FWCfgMemState, FW_CFG_MEM,
+                         TYPE_FW_CFG_MEM)
 
-#define FW_CFG_DATA_GENERATOR_CLASS(class) \
-    OBJECT_CLASS_CHECK(FWCfgDataGeneratorClass, (class), \
+typedef struct FWCfgDataGeneratorClass FWCfgDataGeneratorClass;
+DECLARE_CLASS_CHECKERS(FWCfgDataGeneratorClass, FW_CFG_DATA_GENERATOR,
                        TYPE_FW_CFG_DATA_GENERATOR_INTERFACE)
-#define FW_CFG_DATA_GENERATOR_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(FWCfgDataGeneratorClass, (obj), \
-                     TYPE_FW_CFG_DATA_GENERATOR_INTERFACE)
 
-typedef struct FWCfgDataGeneratorClass {
+struct FWCfgDataGeneratorClass {
     /*< private >*/
     InterfaceClass parent_class;
     /*< public >*/
@@ -39,7 +40,7 @@ typedef struct FWCfgDataGeneratorClass {
      * required.
      */
     GByteArray *(*get_data)(Object *obj, Error **errp);
-} FWCfgDataGeneratorClass;
+};
 
 typedef struct fw_cfg_file FWCfgFile;
 
diff --git a/include/hw/nvram/nrf51_nvm.h b/include/hw/nvram/nrf51_nvm.h
index 3792e4a9fe..ab99b09206 100644
--- a/include/hw/nvram/nrf51_nvm.h
+++ b/include/hw/nvram/nrf51_nvm.h
@@ -23,8 +23,11 @@
 #define NRF51_NVM_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 #define TYPE_NRF51_NVM "nrf51_soc.nvm"
-#define NRF51_NVM(obj) OBJECT_CHECK(NRF51NVMState, (obj), TYPE_NRF51_NVM)
+typedef struct NRF51NVMState NRF51NVMState;
+DECLARE_INSTANCE_CHECKER(NRF51NVMState, NRF51_NVM,
+                         TYPE_NRF51_NVM)
 
 #define NRF51_UICR_FIXTURE_SIZE 64
 
@@ -44,7 +47,7 @@
 
 #define NRF51_UICR_SIZE         0x100
 
-typedef struct NRF51NVMState {
+struct NRF51NVMState {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
@@ -58,7 +61,7 @@ typedef struct NRF51NVMState {
 
     uint32_t config;
 
-} NRF51NVMState;
+};
 
 
 #endif
diff --git a/include/hw/or-irq.h b/include/hw/or-irq.h
index 0038bfbe3d..f2f0a27381 100644
--- a/include/hw/or-irq.h
+++ b/include/hw/or-irq.h
@@ -37,7 +37,8 @@
 
 typedef struct OrIRQState qemu_or_irq;
 
-#define OR_IRQ(obj) OBJECT_CHECK(qemu_or_irq, (obj), TYPE_OR_IRQ)
+DECLARE_INSTANCE_CHECKER(qemu_or_irq, OR_IRQ,
+                         TYPE_OR_IRQ)
 
 struct OrIRQState {
     DeviceState parent_obj;
diff --git a/include/hw/pci-bridge/simba.h b/include/hw/pci-bridge/simba.h
index d8649973ee..675aa5a990 100644
--- a/include/hw/pci-bridge/simba.h
+++ b/include/hw/pci-bridge/simba.h
@@ -28,15 +28,17 @@
 #define HW_PCI_BRIDGE_SIMBA_H
 
 #include "hw/pci/pci_bridge.h"
+#include "qom/object.h"
 
 
-typedef struct SimbaPCIBridge {
+struct SimbaPCIBridge {
     /*< private >*/
     PCIBridge parent_obj;
-} SimbaPCIBridge;
+};
+typedef struct SimbaPCIBridge SimbaPCIBridge;
 
 #define TYPE_SIMBA_PCI_BRIDGE "pbm-bridge"
-#define SIMBA_PCI_BRIDGE(obj) \
-    OBJECT_CHECK(SimbaPCIBridge, (obj), TYPE_SIMBA_PCI_BRIDGE)
+DECLARE_INSTANCE_CHECKER(SimbaPCIBridge, SIMBA_PCI_BRIDGE,
+                         TYPE_SIMBA_PCI_BRIDGE)
 
 #endif
diff --git a/include/hw/pci-host/designware.h b/include/hw/pci-host/designware.h
index 31c41231b1..551eec3107 100644
--- a/include/hw/pci-host/designware.h
+++ b/include/hw/pci-host/designware.h
@@ -26,17 +26,19 @@
 #include "hw/pci/pci_bus.h"
 #include "hw/pci/pcie_host.h"
 #include "hw/pci/pci_bridge.h"
+#include "qom/object.h"
 
 #define TYPE_DESIGNWARE_PCIE_HOST "designware-pcie-host"
-#define DESIGNWARE_PCIE_HOST(obj) \
-     OBJECT_CHECK(DesignwarePCIEHost, (obj), TYPE_DESIGNWARE_PCIE_HOST)
+typedef struct DesignwarePCIEHost DesignwarePCIEHost;
+DECLARE_INSTANCE_CHECKER(DesignwarePCIEHost, DESIGNWARE_PCIE_HOST,
+                         TYPE_DESIGNWARE_PCIE_HOST)
 
 #define TYPE_DESIGNWARE_PCIE_ROOT "designware-pcie-root"
-#define DESIGNWARE_PCIE_ROOT(obj) \
-     OBJECT_CHECK(DesignwarePCIERoot, (obj), TYPE_DESIGNWARE_PCIE_ROOT)
+typedef struct DesignwarePCIERoot DesignwarePCIERoot;
+DECLARE_INSTANCE_CHECKER(DesignwarePCIERoot, DESIGNWARE_PCIE_ROOT,
+                         TYPE_DESIGNWARE_PCIE_ROOT)
 
 struct DesignwarePCIERoot;
-typedef struct DesignwarePCIERoot DesignwarePCIERoot;
 
 typedef struct DesignwarePCIEViewport {
     DesignwarePCIERoot *root;
@@ -80,7 +82,7 @@ struct DesignwarePCIERoot {
     DesignwarePCIEMSI msi;
 };
 
-typedef struct DesignwarePCIEHost {
+struct DesignwarePCIEHost {
     PCIHostState parent_obj;
 
     DesignwarePCIERoot root;
@@ -96,6 +98,6 @@ typedef struct DesignwarePCIEHost {
     } pci;
 
     MemoryRegion mmio;
-} DesignwarePCIEHost;
+};
 
 #endif /* DESIGNWARE_H */
diff --git a/include/hw/pci-host/gpex.h b/include/hw/pci-host/gpex.h
index faea040a93..2f4e852eee 100644
--- a/include/hw/pci-host/gpex.h
+++ b/include/hw/pci-host/gpex.h
@@ -23,24 +23,27 @@
 #include "hw/sysbus.h"
 #include "hw/pci/pci.h"
 #include "hw/pci/pcie_host.h"
+#include "qom/object.h"
 
 #define TYPE_GPEX_HOST "gpex-pcihost"
-#define GPEX_HOST(obj) \
-     OBJECT_CHECK(GPEXHost, (obj), TYPE_GPEX_HOST)
+typedef struct GPEXHost GPEXHost;
+DECLARE_INSTANCE_CHECKER(GPEXHost, GPEX_HOST,
+                         TYPE_GPEX_HOST)
 
 #define TYPE_GPEX_ROOT_DEVICE "gpex-root"
-#define MCH_PCI_DEVICE(obj) \
-     OBJECT_CHECK(GPEXRootState, (obj), TYPE_GPEX_ROOT_DEVICE)
+typedef struct GPEXRootState GPEXRootState;
+DECLARE_INSTANCE_CHECKER(GPEXRootState, GPEX_ROOT_DEVICE,
+                         TYPE_GPEX_ROOT_DEVICE)
 
 #define GPEX_NUM_IRQS 4
 
-typedef struct GPEXRootState {
+struct GPEXRootState {
     /*< private >*/
     PCIDevice parent_obj;
     /*< public >*/
-} GPEXRootState;
+};
 
-typedef struct GPEXHost {
+struct GPEXHost {
     /*< private >*/
     PCIExpressHost parent_obj;
     /*< public >*/
@@ -51,7 +54,7 @@ typedef struct GPEXHost {
     MemoryRegion io_mmio;
     qemu_irq irq[GPEX_NUM_IRQS];
     int irq_num[GPEX_NUM_IRQS];
-} GPEXHost;
+};
 
 int gpex_set_irq_num(GPEXHost *s, int index, int gsi);
 
diff --git a/include/hw/pci-host/i440fx.h b/include/hw/pci-host/i440fx.h
index cc58d82ed4..046c64576d 100644
--- a/include/hw/pci-host/i440fx.h
+++ b/include/hw/pci-host/i440fx.h
@@ -14,14 +14,16 @@
 #include "hw/hw.h"
 #include "hw/pci/pci_bus.h"
 #include "hw/pci-host/pam.h"
+#include "qom/object.h"
 
 #define TYPE_I440FX_PCI_HOST_BRIDGE "i440FX-pcihost"
 #define TYPE_I440FX_PCI_DEVICE "i440FX"
 
-#define I440FX_PCI_DEVICE(obj) \
-    OBJECT_CHECK(PCII440FXState, (obj), TYPE_I440FX_PCI_DEVICE)
+typedef struct PCII440FXState PCII440FXState;
+DECLARE_INSTANCE_CHECKER(PCII440FXState, I440FX_PCI_DEVICE,
+                         TYPE_I440FX_PCI_DEVICE)
 
-typedef struct PCII440FXState {
+struct PCII440FXState {
     /*< private >*/
     PCIDevice parent_obj;
     /*< public >*/
@@ -32,7 +34,7 @@ typedef struct PCII440FXState {
     PAMMemoryRegion pam_regions[13];
     MemoryRegion smram_region;
     MemoryRegion smram, low_smram;
-} PCII440FXState;
+};
 
 #define TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE "igd-passthrough-i440FX"
 
diff --git a/include/hw/pci-host/pnv_phb3.h b/include/hw/pci-host/pnv_phb3.h
index 75b787867a..182f29d681 100644
--- a/include/hw/pci-host/pnv_phb3.h
+++ b/include/hw/pci-host/pnv_phb3.h
@@ -13,6 +13,7 @@
 #include "hw/pci/pcie_host.h"
 #include "hw/pci/pcie_port.h"
 #include "hw/ppc/xics.h"
+#include "qom/object.h"
 
 typedef struct PnvPHB3 PnvPHB3;
 
@@ -20,18 +21,20 @@ typedef struct PnvPHB3 PnvPHB3;
  * PHB3 XICS Source for MSIs
  */
 #define TYPE_PHB3_MSI "phb3-msi"
-#define PHB3_MSI(obj) OBJECT_CHECK(Phb3MsiState, (obj), TYPE_PHB3_MSI)
+typedef struct Phb3MsiState Phb3MsiState;
+DECLARE_INSTANCE_CHECKER(Phb3MsiState, PHB3_MSI,
+                         TYPE_PHB3_MSI)
 
 #define PHB3_MAX_MSI     2048
 
-typedef struct Phb3MsiState {
+struct Phb3MsiState {
     ICSState ics;
     qemu_irq *qirqs;
 
     PnvPHB3 *phb;
     uint64_t rba[PHB3_MAX_MSI / 64];
     uint32_t rba_sum;
-} Phb3MsiState;
+};
 
 void pnv_phb3_msi_update_config(Phb3MsiState *msis, uint32_t base,
                                 uint32_t count);
@@ -69,9 +72,11 @@ typedef struct PnvPhb3DMASpace {
  * PHB3 Power Bus Common Queue
  */
 #define TYPE_PNV_PBCQ "pnv-pbcq"
-#define PNV_PBCQ(obj) OBJECT_CHECK(PnvPBCQState, (obj), TYPE_PNV_PBCQ)
+typedef struct PnvPBCQState PnvPBCQState;
+DECLARE_INSTANCE_CHECKER(PnvPBCQState, PNV_PBCQ,
+                         TYPE_PNV_PBCQ)
 
-typedef struct PnvPBCQState {
+struct PnvPBCQState {
     DeviceState parent;
 
     uint32_t nest_xbase;
@@ -96,7 +101,7 @@ typedef struct PnvPBCQState {
     MemoryRegion xscom_nest_regs;
     MemoryRegion xscom_pci_regs;
     MemoryRegion xscom_spci_regs;
-} PnvPBCQState;
+};
 
 /*
  * PHB3 PCIe Root port
@@ -113,7 +118,8 @@ typedef struct PnvPHB3RootPort {
  * PHB3 PCIe Host Bridge for PowerNV machines (POWER8)
  */
 #define TYPE_PNV_PHB3 "pnv-phb3"
-#define PNV_PHB3(obj) OBJECT_CHECK(PnvPHB3, (obj), TYPE_PNV_PHB3)
+DECLARE_INSTANCE_CHECKER(PnvPHB3, PNV_PHB3,
+                         TYPE_PNV_PHB3)
 
 #define PNV_PHB3_NUM_M64      16
 #define PNV_PHB3_NUM_REGS     (0x1000 >> 3)
diff --git a/include/hw/pci-host/pnv_phb4.h b/include/hw/pci-host/pnv_phb4.h
index c882bfd0aa..15a4633178 100644
--- a/include/hw/pci-host/pnv_phb4.h
+++ b/include/hw/pci-host/pnv_phb4.h
@@ -13,6 +13,7 @@
 #include "hw/pci/pcie_host.h"
 #include "hw/pci/pcie_port.h"
 #include "hw/ppc/xive.h"
+#include "qom/object.h"
 
 typedef struct PnvPhb4PecState PnvPhb4PecState;
 typedef struct PnvPhb4PecStack PnvPhb4PecStack;
@@ -57,7 +58,8 @@ typedef struct PnvPHB4RootPort {
  * PHB4 PCIe Host Bridge for PowerNV machines (POWER9)
  */
 #define TYPE_PNV_PHB4 "pnv-phb4"
-#define PNV_PHB4(obj) OBJECT_CHECK(PnvPHB4, (obj), TYPE_PNV_PHB4)
+DECLARE_INSTANCE_CHECKER(PnvPHB4, PNV_PHB4,
+                         TYPE_PNV_PHB4)
 
 #define PNV_PHB4_MAX_LSIs          8
 #define PNV_PHB4_MAX_INTs          4096
@@ -140,12 +142,13 @@ extern const MemoryRegionOps pnv_phb4_xscom_ops;
  * PHB4 PEC (PCI Express Controller)
  */
 #define TYPE_PNV_PHB4_PEC "pnv-phb4-pec"
-#define PNV_PHB4_PEC(obj) \
-    OBJECT_CHECK(PnvPhb4PecState, (obj), TYPE_PNV_PHB4_PEC)
+typedef struct PnvPhb4PecClass PnvPhb4PecClass;
+DECLARE_OBJ_CHECKERS(PnvPhb4PecState, PnvPhb4PecClass,
+                     PNV_PHB4_PEC, TYPE_PNV_PHB4_PEC)
 
 #define TYPE_PNV_PHB4_PEC_STACK "pnv-phb4-pec-stack"
-#define PNV_PHB4_PEC_STACK(obj) \
-    OBJECT_CHECK(PnvPhb4PecStack, (obj), TYPE_PNV_PHB4_PEC_STACK)
+DECLARE_INSTANCE_CHECKER(PnvPhb4PecStack, PNV_PHB4_PEC_STACK,
+                         TYPE_PNV_PHB4_PEC_STACK)
 
 /* Per-stack data */
 struct PnvPhb4PecStack {
@@ -209,12 +212,8 @@ struct PnvPhb4PecState {
     PnvPhb4PecStack stacks[PHB4_PEC_MAX_STACKS];
 };
 
-#define PNV_PHB4_PEC_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PnvPhb4PecClass, (klass), TYPE_PNV_PHB4_PEC)
-#define PNV_PHB4_PEC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvPhb4PecClass, (obj), TYPE_PNV_PHB4_PEC)
 
-typedef struct PnvPhb4PecClass {
+struct PnvPhb4PecClass {
     DeviceClass parent_class;
 
     uint32_t (*xscom_nest_base)(PnvPhb4PecState *pec);
@@ -225,6 +224,6 @@ typedef struct PnvPhb4PecClass {
     int compat_size;
     const char *stk_compat;
     int stk_compat_size;
-} PnvPhb4PecClass;
+};
 
 #endif /* PCI_HOST_PNV_PHB4_H */
diff --git a/include/hw/pci-host/q35.h b/include/hw/pci-host/q35.h
index 070305f83d..0f5a534f77 100644
--- a/include/hw/pci-host/q35.h
+++ b/include/hw/pci-host/q35.h
@@ -27,16 +27,19 @@
 #include "hw/pci-host/pam.h"
 #include "qemu/units.h"
 #include "qemu/range.h"
+#include "qom/object.h"
 
 #define TYPE_Q35_HOST_DEVICE "q35-pcihost"
-#define Q35_HOST_DEVICE(obj) \
-     OBJECT_CHECK(Q35PCIHost, (obj), TYPE_Q35_HOST_DEVICE)
+typedef struct Q35PCIHost Q35PCIHost;
+DECLARE_INSTANCE_CHECKER(Q35PCIHost, Q35_HOST_DEVICE,
+                         TYPE_Q35_HOST_DEVICE)
 
 #define TYPE_MCH_PCI_DEVICE "mch"
-#define MCH_PCI_DEVICE(obj) \
-     OBJECT_CHECK(MCHPCIState, (obj), TYPE_MCH_PCI_DEVICE)
+typedef struct MCHPCIState MCHPCIState;
+DECLARE_INSTANCE_CHECKER(MCHPCIState, MCH_PCI_DEVICE,
+                         TYPE_MCH_PCI_DEVICE)
 
-typedef struct MCHPCIState {
+struct MCHPCIState {
     /*< private >*/
     PCIDevice parent_obj;
     /*< public >*/
@@ -57,16 +60,16 @@ typedef struct MCHPCIState {
     uint64_t pci_hole64_size;
     uint32_t short_root_bus;
     uint16_t ext_tseg_mbytes;
-} MCHPCIState;
+};
 
-typedef struct Q35PCIHost {
+struct Q35PCIHost {
     /*< private >*/
     PCIExpressHost parent_obj;
     /*< public >*/
 
     bool pci_hole64_fix;
     MCHPCIState mch;
-} Q35PCIHost;
+};
 
 #define Q35_MASK(bit, ms_bit, ls_bit) \
 ((uint##bit##_t)(((1ULL << ((ms_bit) + 1)) - 1) & ~((1ULL << ls_bit) - 1)))
diff --git a/include/hw/pci-host/sabre.h b/include/hw/pci-host/sabre.h
index 99b5aefbec..7a76de4b9e 100644
--- a/include/hw/pci-host/sabre.h
+++ b/include/hw/pci-host/sabre.h
@@ -4,6 +4,7 @@
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_host.h"
 #include "hw/sparc/sun4u_iommu.h"
+#include "qom/object.h"
 
 #define MAX_IVEC 0x40
 
@@ -16,15 +17,16 @@
 #define OBIO_MSE_IRQ         0x2a
 #define OBIO_SER_IRQ         0x2b
 
-typedef struct SabrePCIState {
+struct SabrePCIState {
     PCIDevice parent_obj;
-} SabrePCIState;
+};
+typedef struct SabrePCIState SabrePCIState;
 
 #define TYPE_SABRE_PCI_DEVICE "sabre-pci"
-#define SABRE_PCI_DEVICE(obj) \
-    OBJECT_CHECK(SabrePCIState, (obj), TYPE_SABRE_PCI_DEVICE)
+DECLARE_INSTANCE_CHECKER(SabrePCIState, SABRE_PCI_DEVICE,
+                         TYPE_SABRE_PCI_DEVICE)
 
-typedef struct SabreState {
+struct SabreState {
     PCIHostState parent_obj;
 
     hwaddr special_base;
@@ -45,10 +47,11 @@ typedef struct SabreState {
     unsigned int irq_request;
     uint32_t reset_control;
     unsigned int nr_resets;
-} SabreState;
+};
+typedef struct SabreState SabreState;
 
 #define TYPE_SABRE "sabre"
-#define SABRE_DEVICE(obj) \
-    OBJECT_CHECK(SabreState, (obj), TYPE_SABRE)
+DECLARE_INSTANCE_CHECKER(SabreState, SABRE,
+                         TYPE_SABRE)
 
 #endif
diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
index 600eb55c34..0431ce1048 100644
--- a/include/hw/pci-host/spapr.h
+++ b/include/hw/pci-host/spapr.h
@@ -24,15 +24,16 @@
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_host.h"
 #include "hw/ppc/xics.h"
+#include "qom/object.h"
 
 #define TYPE_SPAPR_PCI_HOST_BRIDGE "spapr-pci-host-bridge"
 
-#define SPAPR_PCI_HOST_BRIDGE(obj) \
-    OBJECT_CHECK(SpaprPhbState, (obj), TYPE_SPAPR_PCI_HOST_BRIDGE)
+typedef struct SpaprPhbState SpaprPhbState;
+DECLARE_INSTANCE_CHECKER(SpaprPhbState, SPAPR_PCI_HOST_BRIDGE,
+                         TYPE_SPAPR_PCI_HOST_BRIDGE)
 
 #define SPAPR_PCI_DMA_MAX_WINDOWS    2
 
-typedef struct SpaprPhbState SpaprPhbState;
 
 typedef struct SpaprPciMsi {
     uint32_t first_irq;
diff --git a/include/hw/pci-host/uninorth.h b/include/hw/pci-host/uninorth.h
index 72d2a97355..d10c598298 100644
--- a/include/hw/pci-host/uninorth.h
+++ b/include/hw/pci-host/uninorth.h
@@ -27,6 +27,7 @@
 
 #include "hw/pci/pci_host.h"
 #include "hw/ppc/openpic.h"
+#include "qom/object.h"
 
 /* UniNorth version */
 #define UNINORTH_VERSION_10A    0x7
@@ -36,16 +37,17 @@
 #define TYPE_UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE "uni-north-internal-pci-pcihost"
 #define TYPE_U3_AGP_HOST_BRIDGE "u3-agp-pcihost"
 
-#define UNI_NORTH_PCI_HOST_BRIDGE(obj) \
-    OBJECT_CHECK(UNINHostState, (obj), TYPE_UNI_NORTH_PCI_HOST_BRIDGE)
-#define UNI_NORTH_AGP_HOST_BRIDGE(obj) \
-    OBJECT_CHECK(UNINHostState, (obj), TYPE_UNI_NORTH_AGP_HOST_BRIDGE)
-#define UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE(obj) \
-    OBJECT_CHECK(UNINHostState, (obj), TYPE_UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE)
-#define U3_AGP_HOST_BRIDGE(obj) \
-    OBJECT_CHECK(UNINHostState, (obj), TYPE_U3_AGP_HOST_BRIDGE)
+typedef struct UNINHostState UNINHostState;
+DECLARE_INSTANCE_CHECKER(UNINHostState, UNI_NORTH_PCI_HOST_BRIDGE,
+                         TYPE_UNI_NORTH_PCI_HOST_BRIDGE)
+DECLARE_INSTANCE_CHECKER(UNINHostState, UNI_NORTH_AGP_HOST_BRIDGE,
+                         TYPE_UNI_NORTH_AGP_HOST_BRIDGE)
+DECLARE_INSTANCE_CHECKER(UNINHostState, UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE,
+                         TYPE_UNI_NORTH_INTERNAL_PCI_HOST_BRIDGE)
+DECLARE_INSTANCE_CHECKER(UNINHostState, U3_AGP_HOST_BRIDGE,
+                         TYPE_U3_AGP_HOST_BRIDGE)
 
-typedef struct UNINHostState {
+struct UNINHostState {
     PCIHostState parent_obj;
 
     uint32_t ofw_addr;
@@ -54,16 +56,17 @@ typedef struct UNINHostState {
     MemoryRegion pci_mmio;
     MemoryRegion pci_hole;
     MemoryRegion pci_io;
-} UNINHostState;
+};
 
-typedef struct UNINState {
+struct UNINState {
     SysBusDevice parent_obj;
 
     MemoryRegion mem;
-} UNINState;
+};
+typedef struct UNINState UNINState;
 
 #define TYPE_UNI_NORTH "uni-north"
-#define UNI_NORTH(obj) \
-    OBJECT_CHECK(UNINState, (obj), TYPE_UNI_NORTH)
+DECLARE_INSTANCE_CHECKER(UNINState, UNI_NORTH,
+                         TYPE_UNI_NORTH)
 
 #endif /* UNINORTH_H */
diff --git a/include/hw/pci-host/xilinx-pcie.h b/include/hw/pci-host/xilinx-pcie.h
index c0f15314be..6058c8c9e2 100644
--- a/include/hw/pci-host/xilinx-pcie.h
+++ b/include/hw/pci-host/xilinx-pcie.h
@@ -24,25 +24,28 @@
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_bridge.h"
 #include "hw/pci/pcie_host.h"
+#include "qom/object.h"
 
 #define TYPE_XILINX_PCIE_HOST "xilinx-pcie-host"
-#define XILINX_PCIE_HOST(obj) \
-     OBJECT_CHECK(XilinxPCIEHost, (obj), TYPE_XILINX_PCIE_HOST)
+typedef struct XilinxPCIEHost XilinxPCIEHost;
+DECLARE_INSTANCE_CHECKER(XilinxPCIEHost, XILINX_PCIE_HOST,
+                         TYPE_XILINX_PCIE_HOST)
 
 #define TYPE_XILINX_PCIE_ROOT "xilinx-pcie-root"
-#define XILINX_PCIE_ROOT(obj) \
-     OBJECT_CHECK(XilinxPCIERoot, (obj), TYPE_XILINX_PCIE_ROOT)
+typedef struct XilinxPCIERoot XilinxPCIERoot;
+DECLARE_INSTANCE_CHECKER(XilinxPCIERoot, XILINX_PCIE_ROOT,
+                         TYPE_XILINX_PCIE_ROOT)
 
-typedef struct XilinxPCIERoot {
+struct XilinxPCIERoot {
     PCIBridge parent_obj;
-} XilinxPCIERoot;
+};
 
 typedef struct XilinxPCIEInt {
     uint32_t fifo_reg1;
     uint32_t fifo_reg2;
 } XilinxPCIEInt;
 
-typedef struct XilinxPCIEHost {
+struct XilinxPCIEHost {
     PCIExpressHost parent_obj;
 
     char name[16];
@@ -62,6 +65,6 @@ typedef struct XilinxPCIEHost {
     XilinxPCIEInt intr_fifo[16];
     unsigned int intr_fifo_r, intr_fifo_w;
     uint32_t rpscr;
-} XilinxPCIEHost;
+};
 
 #endif /* HW_XILINX_PCIE_H */
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index 4ca7258b5b..c13ae1f858 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -8,6 +8,7 @@
 #include "hw/isa/isa.h"
 
 #include "hw/pci/pcie.h"
+#include "qom/object.h"
 
 extern bool pci_available;
 
@@ -195,12 +196,9 @@ enum {
 };
 
 #define TYPE_PCI_DEVICE "pci-device"
-#define PCI_DEVICE(obj) \
-     OBJECT_CHECK(PCIDevice, (obj), TYPE_PCI_DEVICE)
-#define PCI_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PCIDeviceClass, (klass), TYPE_PCI_DEVICE)
-#define PCI_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PCIDeviceClass, (obj), TYPE_PCI_DEVICE)
+typedef struct PCIDeviceClass PCIDeviceClass;
+DECLARE_OBJ_CHECKERS(PCIDevice, PCIDeviceClass,
+                     PCI_DEVICE, TYPE_PCI_DEVICE)
 
 /* Implemented by devices that can be plugged on PCI Express buses */
 #define INTERFACE_PCIE_DEVICE "pci-express-device"
@@ -217,7 +215,7 @@ typedef struct PCIINTxRoute {
     int irq;
 } PCIINTxRoute;
 
-typedef struct PCIDeviceClass {
+struct PCIDeviceClass {
     DeviceClass parent_class;
 
     void (*realize)(PCIDevice *dev, Error **errp);
@@ -241,7 +239,7 @@ typedef struct PCIDeviceClass {
 
     /* rom bar */
     const char *romfile;
-} PCIDeviceClass;
+};
 
 typedef void (*PCIINTxRoutingNotifier)(PCIDevice *dev);
 typedef int (*MSIVectorUseNotifier)(PCIDevice *dev, unsigned int vector,
@@ -397,9 +395,8 @@ typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin);
 
 #define TYPE_PCI_BUS "PCI"
 typedef struct PCIBusClass PCIBusClass;
-#define PCI_BUS(obj) OBJECT_CHECK(PCIBus, (obj), TYPE_PCI_BUS)
-#define PCI_BUS_CLASS(klass) OBJECT_CLASS_CHECK(PCIBusClass, (klass), TYPE_PCI_BUS)
-#define PCI_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(PCIBusClass, (obj), TYPE_PCI_BUS)
+DECLARE_OBJ_CHECKERS(PCIBus, PCIBusClass,
+                     PCI_BUS, TYPE_PCI_BUS)
 #define TYPE_PCIE_BUS "PCIE"
 
 bool pci_bus_is_express(PCIBus *bus);
diff --git a/include/hw/pci/pci_bridge.h b/include/hw/pci/pci_bridge.h
index 99c674e949..7ab145955a 100644
--- a/include/hw/pci/pci_bridge.h
+++ b/include/hw/pci/pci_bridge.h
@@ -28,6 +28,7 @@
 
 #include "hw/pci/pci.h"
 #include "hw/pci/pci_bus.h"
+#include "qom/object.h"
 
 typedef struct PCIBridgeWindows PCIBridgeWindows;
 
@@ -50,7 +51,8 @@ struct PCIBridgeWindows {
 };
 
 #define TYPE_PCI_BRIDGE "base-pci-bridge"
-#define PCI_BRIDGE(obj) OBJECT_CHECK(PCIBridge, (obj), TYPE_PCI_BRIDGE)
+DECLARE_INSTANCE_CHECKER(PCIBridge, PCI_BRIDGE,
+                         TYPE_PCI_BRIDGE)
 
 struct PCIBridge {
     /*< private >*/
diff --git a/include/hw/pci/pci_host.h b/include/hw/pci/pci_host.h
index 6210a7e14d..d1fc1c3604 100644
--- a/include/hw/pci/pci_host.h
+++ b/include/hw/pci/pci_host.h
@@ -29,14 +29,12 @@
 #define PCI_HOST_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_PCI_HOST_BRIDGE "pci-host-bridge"
-#define PCI_HOST_BRIDGE(obj) \
-    OBJECT_CHECK(PCIHostState, (obj), TYPE_PCI_HOST_BRIDGE)
-#define PCI_HOST_BRIDGE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PCIHostBridgeClass, (klass), TYPE_PCI_HOST_BRIDGE)
-#define PCI_HOST_BRIDGE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PCIHostBridgeClass, (obj), TYPE_PCI_HOST_BRIDGE)
+typedef struct PCIHostBridgeClass PCIHostBridgeClass;
+DECLARE_OBJ_CHECKERS(PCIHostState, PCIHostBridgeClass,
+                     PCI_HOST_BRIDGE, TYPE_PCI_HOST_BRIDGE)
 
 struct PCIHostState {
     SysBusDevice busdev;
@@ -51,11 +49,11 @@ struct PCIHostState {
     QLIST_ENTRY(PCIHostState) next;
 };
 
-typedef struct PCIHostBridgeClass {
+struct PCIHostBridgeClass {
     SysBusDeviceClass parent_class;
 
     const char *(*root_bus_path)(PCIHostState *, PCIBus *);
-} PCIHostBridgeClass;
+};
 
 /* common internal helpers for PCI/PCIe hosts, cut off overflows */
 void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr,
diff --git a/include/hw/pci/pcie_host.h b/include/hw/pci/pcie_host.h
index 3f7b9886d1..f512646c0c 100644
--- a/include/hw/pci/pcie_host.h
+++ b/include/hw/pci/pcie_host.h
@@ -23,10 +23,11 @@
 
 #include "hw/pci/pci_host.h"
 #include "exec/memory.h"
+#include "qom/object.h"
 
 #define TYPE_PCIE_HOST_BRIDGE "pcie-host-bridge"
-#define PCIE_HOST_BRIDGE(obj) \
-    OBJECT_CHECK(PCIExpressHost, (obj), TYPE_PCIE_HOST_BRIDGE)
+DECLARE_INSTANCE_CHECKER(PCIExpressHost, PCIE_HOST_BRIDGE,
+                         TYPE_PCIE_HOST_BRIDGE)
 
 #define PCIE_HOST_MCFG_BASE "MCFG"
 #define PCIE_HOST_MCFG_SIZE "mcfg_size"
diff --git a/include/hw/pci/pcie_port.h b/include/hw/pci/pcie_port.h
index caae57573b..2463c07fa7 100644
--- a/include/hw/pci/pcie_port.h
+++ b/include/hw/pci/pcie_port.h
@@ -23,9 +23,11 @@
 
 #include "hw/pci/pci_bridge.h"
 #include "hw/pci/pci_bus.h"
+#include "qom/object.h"
 
 #define TYPE_PCIE_PORT "pcie-port"
-#define PCIE_PORT(obj) OBJECT_CHECK(PCIEPort, (obj), TYPE_PCIE_PORT)
+DECLARE_INSTANCE_CHECKER(PCIEPort, PCIE_PORT,
+                         TYPE_PCIE_PORT)
 
 struct PCIEPort {
     /*< private >*/
@@ -39,7 +41,8 @@ struct PCIEPort {
 void pcie_port_init_reg(PCIDevice *d);
 
 #define TYPE_PCIE_SLOT "pcie-slot"
-#define PCIE_SLOT(obj) OBJECT_CHECK(PCIESlot, (obj), TYPE_PCIE_SLOT)
+DECLARE_INSTANCE_CHECKER(PCIESlot, PCIE_SLOT,
+                         TYPE_PCIE_SLOT)
 
 struct PCIESlot {
     /*< private >*/
@@ -67,12 +70,11 @@ int pcie_chassis_add_slot(struct PCIESlot *slot);
 void pcie_chassis_del_slot(PCIESlot *s);
 
 #define TYPE_PCIE_ROOT_PORT         "pcie-root-port-base"
-#define PCIE_ROOT_PORT_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PCIERootPortClass, (klass), TYPE_PCIE_ROOT_PORT)
-#define PCIE_ROOT_PORT_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PCIERootPortClass, (obj), TYPE_PCIE_ROOT_PORT)
+typedef struct PCIERootPortClass PCIERootPortClass;
+DECLARE_CLASS_CHECKERS(PCIERootPortClass, PCIE_ROOT_PORT,
+                       TYPE_PCIE_ROOT_PORT)
 
-typedef struct PCIERootPortClass {
+struct PCIERootPortClass {
     PCIDeviceClass parent_class;
     DeviceRealize parent_realize;
     DeviceReset parent_reset;
@@ -86,6 +88,6 @@ typedef struct PCIERootPortClass {
     int ssvid_offset;
     int acs_offset;    /* If nonzero, optional ACS capability offset */
     int ssid;
-} PCIERootPortClass;
+};
 
 #endif /* QEMU_PCIE_PORT_H */
diff --git a/include/hw/pcmcia.h b/include/hw/pcmcia.h
index ebad7bc504..fb40ae7e09 100644
--- a/include/hw/pcmcia.h
+++ b/include/hw/pcmcia.h
@@ -4,6 +4,7 @@
 /* PCMCIA/Cardbus */
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 typedef struct PCMCIASocket {
     qemu_irq irq;
@@ -11,22 +12,20 @@ typedef struct PCMCIASocket {
 } PCMCIASocket;
 
 #define TYPE_PCMCIA_CARD "pcmcia-card"
-#define PCMCIA_CARD(obj) \
-    OBJECT_CHECK(PCMCIACardState, (obj), TYPE_PCMCIA_CARD)
-#define PCMCIA_CARD_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(PCMCIACardClass, obj, TYPE_PCMCIA_CARD)
-#define PCMCIA_CARD_CLASS(cls) \
-    OBJECT_CLASS_CHECK(PCMCIACardClass, cls, TYPE_PCMCIA_CARD)
+typedef struct PCMCIACardClass PCMCIACardClass;
+typedef struct PCMCIACardState PCMCIACardState;
+DECLARE_OBJ_CHECKERS(PCMCIACardState, PCMCIACardClass,
+                     PCMCIA_CARD, TYPE_PCMCIA_CARD)
 
-typedef struct PCMCIACardState {
+struct PCMCIACardState {
     /*< private >*/
     DeviceState parent_obj;
     /*< public >*/
 
     PCMCIASocket *slot;
-} PCMCIACardState;
+};
 
-typedef struct PCMCIACardClass {
+struct PCMCIACardClass {
     /*< private >*/
     DeviceClass parent_class;
     /*< public >*/
@@ -45,7 +44,7 @@ typedef struct PCMCIACardClass {
                          uint32_t address, uint16_t value);
     uint16_t (*io_read)(PCMCIACardState *card, uint32_t address);
     void (*io_write)(PCMCIACardState *card, uint32_t address, uint16_t value);
-} PCMCIACardClass;
+};
 
 #define CISTPL_DEVICE		0x01	/* 5V Device Information Tuple */
 #define CISTPL_NO_LINK		0x14	/* No Link Tuple */
diff --git a/include/hw/platform-bus.h b/include/hw/platform-bus.h
index 33745a418e..0d035e1b71 100644
--- a/include/hw/platform-bus.h
+++ b/include/hw/platform-bus.h
@@ -23,12 +23,13 @@
  */
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 typedef struct PlatformBusDevice PlatformBusDevice;
 
 #define TYPE_PLATFORM_BUS_DEVICE "platform-bus-device"
-#define PLATFORM_BUS_DEVICE(obj) \
-     OBJECT_CHECK(PlatformBusDevice, (obj), TYPE_PLATFORM_BUS_DEVICE)
+DECLARE_INSTANCE_CHECKER(PlatformBusDevice, PLATFORM_BUS_DEVICE,
+                         TYPE_PLATFORM_BUS_DEVICE)
 
 struct PlatformBusDevice {
     /*< private >*/
diff --git a/include/hw/ppc/mac_dbdma.h b/include/hw/ppc/mac_dbdma.h
index 26cc469de4..9166d5f758 100644
--- a/include/hw/ppc/mac_dbdma.h
+++ b/include/hw/ppc/mac_dbdma.h
@@ -27,6 +27,7 @@
 #include "qemu/iov.h"
 #include "sysemu/dma.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 typedef struct DBDMA_io DBDMA_io;
 
@@ -160,13 +161,14 @@ typedef struct DBDMA_channel {
     dbdma_cmd current;
 } DBDMA_channel;
 
-typedef struct {
+struct DBDMAState {
     SysBusDevice parent_obj;
 
     MemoryRegion mem;
     DBDMA_channel channels[DBDMA_CHANNELS];
     QEMUBH *bh;
-} DBDMAState;
+};
+typedef struct DBDMAState DBDMAState;
 
 /* Externally callable functions */
 
@@ -176,6 +178,7 @@ void DBDMA_register_channel(void *dbdma, int nchan, qemu_irq irq,
 void DBDMA_kick(DBDMAState *dbdma);
 
 #define TYPE_MAC_DBDMA "mac-dbdma"
-#define MAC_DBDMA(obj) OBJECT_CHECK(DBDMAState, (obj), TYPE_MAC_DBDMA)
+DECLARE_INSTANCE_CHECKER(DBDMAState, MAC_DBDMA,
+                         TYPE_MAC_DBDMA)
 
 #endif
diff --git a/include/hw/ppc/openpic.h b/include/hw/ppc/openpic.h
index db0d29e6c2..61908c7858 100644
--- a/include/hw/ppc/openpic.h
+++ b/include/hw/ppc/openpic.h
@@ -3,6 +3,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/core/cpu.h"
+#include "qom/object.h"
 
 #define MAX_CPU     32
 #define MAX_MSI     8
@@ -136,9 +137,11 @@ typedef struct IRQDest {
 } IRQDest;
 
 #define TYPE_OPENPIC "openpic"
-#define OPENPIC(obj) OBJECT_CHECK(OpenPICState, (obj), TYPE_OPENPIC)
+typedef struct OpenPICState OpenPICState;
+DECLARE_INSTANCE_CHECKER(OpenPICState, OPENPIC,
+                         TYPE_OPENPIC)
 
-typedef struct OpenPICState {
+struct OpenPICState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -183,6 +186,6 @@ typedef struct OpenPICState {
     uint32_t irq_ipi0;
     uint32_t irq_tim0;
     uint32_t irq_msi;
-} OpenPICState;
+};
 
 #endif /* OPENPIC_H */
diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index d4b0b0e2ff..b4b2b24d80 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -32,15 +32,13 @@
 #include "hw/ppc/pnv_core.h"
 #include "hw/pci-host/pnv_phb3.h"
 #include "hw/pci-host/pnv_phb4.h"
+#include "qom/object.h"
 
 #define TYPE_PNV_CHIP "pnv-chip"
-#define PNV_CHIP(obj) OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP)
-#define PNV_CHIP_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PnvChipClass, (klass), TYPE_PNV_CHIP)
-#define PNV_CHIP_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvChipClass, (obj), TYPE_PNV_CHIP)
+OBJECT_DECLARE_TYPE(PnvChip, PnvChipClass,
+                    pnv_chip, PNV_CHIP)
 
-typedef struct PnvChip {
+struct PnvChip {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -61,12 +59,14 @@ typedef struct PnvChip {
     AddressSpace xscom_as;
 
     gchar        *dt_isa_nodename;
-} PnvChip;
+};
 
 #define TYPE_PNV8_CHIP "pnv8-chip"
-#define PNV8_CHIP(obj) OBJECT_CHECK(Pnv8Chip, (obj), TYPE_PNV8_CHIP)
+typedef struct Pnv8Chip Pnv8Chip;
+DECLARE_INSTANCE_CHECKER(Pnv8Chip, PNV8_CHIP,
+                         TYPE_PNV8_CHIP)
 
-typedef struct Pnv8Chip {
+struct Pnv8Chip {
     /*< private >*/
     PnvChip      parent_obj;
 
@@ -82,12 +82,14 @@ typedef struct Pnv8Chip {
     PnvPHB3      phbs[PNV8_CHIP_PHB3_MAX];
 
     XICSFabric    *xics;
-} Pnv8Chip;
+};
 
 #define TYPE_PNV9_CHIP "pnv9-chip"
-#define PNV9_CHIP(obj) OBJECT_CHECK(Pnv9Chip, (obj), TYPE_PNV9_CHIP)
+typedef struct Pnv9Chip Pnv9Chip;
+DECLARE_INSTANCE_CHECKER(Pnv9Chip, PNV9_CHIP,
+                         TYPE_PNV9_CHIP)
 
-typedef struct Pnv9Chip {
+struct Pnv9Chip {
     /*< private >*/
     PnvChip      parent_obj;
 
@@ -103,7 +105,7 @@ typedef struct Pnv9Chip {
 
 #define PNV9_CHIP_MAX_PEC 3
     PnvPhb4PecState pecs[PNV9_CHIP_MAX_PEC];
-} Pnv9Chip;
+};
 
 /*
  * A SMT8 fused core is a pair of SMT4 cores.
@@ -112,18 +114,20 @@ typedef struct Pnv9Chip {
 #define PNV9_PIR2CHIP(pir)      (((pir) >> 8) & 0x7f)
 
 #define TYPE_PNV10_CHIP "pnv10-chip"
-#define PNV10_CHIP(obj) OBJECT_CHECK(Pnv10Chip, (obj), TYPE_PNV10_CHIP)
+typedef struct Pnv10Chip Pnv10Chip;
+DECLARE_INSTANCE_CHECKER(Pnv10Chip, PNV10_CHIP,
+                         TYPE_PNV10_CHIP)
 
-typedef struct Pnv10Chip {
+struct Pnv10Chip {
     /*< private >*/
     PnvChip      parent_obj;
 
     /*< public >*/
     Pnv9Psi      psi;
     PnvLpcController lpc;
-} Pnv10Chip;
+};
 
-typedef struct PnvChipClass {
+struct PnvChipClass {
     /*< private >*/
     SysBusDeviceClass parent_class;
 
@@ -144,30 +148,30 @@ typedef struct PnvChipClass {
     void (*pic_print_info)(PnvChip *chip, Monitor *mon);
     uint64_t (*xscom_core_base)(PnvChip *chip, uint32_t core_id);
     uint32_t (*xscom_pcba)(PnvChip *chip, uint64_t addr);
-} PnvChipClass;
+};
 
 #define PNV_CHIP_TYPE_SUFFIX "-" TYPE_PNV_CHIP
 #define PNV_CHIP_TYPE_NAME(cpu_model) cpu_model PNV_CHIP_TYPE_SUFFIX
 
 #define TYPE_PNV_CHIP_POWER8E PNV_CHIP_TYPE_NAME("power8e_v2.1")
-#define PNV_CHIP_POWER8E(obj) \
-    OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER8E)
+DECLARE_INSTANCE_CHECKER(PnvChip, PNV_CHIP_POWER8E,
+                         TYPE_PNV_CHIP_POWER8E)
 
 #define TYPE_PNV_CHIP_POWER8 PNV_CHIP_TYPE_NAME("power8_v2.0")
-#define PNV_CHIP_POWER8(obj) \
-    OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER8)
+DECLARE_INSTANCE_CHECKER(PnvChip, PNV_CHIP_POWER8,
+                         TYPE_PNV_CHIP_POWER8)
 
 #define TYPE_PNV_CHIP_POWER8NVL PNV_CHIP_TYPE_NAME("power8nvl_v1.0")
-#define PNV_CHIP_POWER8NVL(obj) \
-    OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER8NVL)
+DECLARE_INSTANCE_CHECKER(PnvChip, PNV_CHIP_POWER8NVL,
+                         TYPE_PNV_CHIP_POWER8NVL)
 
 #define TYPE_PNV_CHIP_POWER9 PNV_CHIP_TYPE_NAME("power9_v2.0")
-#define PNV_CHIP_POWER9(obj) \
-    OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER9)
+DECLARE_INSTANCE_CHECKER(PnvChip, PNV_CHIP_POWER9,
+                         TYPE_PNV_CHIP_POWER9)
 
 #define TYPE_PNV_CHIP_POWER10 PNV_CHIP_TYPE_NAME("power10_v1.0")
-#define PNV_CHIP_POWER10(obj) \
-    OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER10)
+DECLARE_INSTANCE_CHECKER(PnvChip, PNV_CHIP_POWER10,
+                         TYPE_PNV_CHIP_POWER10)
 
 /*
  * This generates a HW chip id depending on an index, as found on a
@@ -191,16 +195,13 @@ typedef struct PnvChipClass {
 PowerPCCPU *pnv_chip_find_cpu(PnvChip *chip, uint32_t pir);
 
 #define TYPE_PNV_MACHINE       MACHINE_TYPE_NAME("powernv")
-#define PNV_MACHINE(obj) \
-    OBJECT_CHECK(PnvMachineState, (obj), TYPE_PNV_MACHINE)
-#define PNV_MACHINE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(PnvMachineClass, obj, TYPE_PNV_MACHINE)
-#define PNV_MACHINE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(PnvMachineClass, klass, TYPE_PNV_MACHINE)
-
+typedef struct PnvMachineClass PnvMachineClass;
 typedef struct PnvMachineState PnvMachineState;
+DECLARE_OBJ_CHECKERS(PnvMachineState, PnvMachineClass,
+                     PNV_MACHINE, TYPE_PNV_MACHINE)
 
-typedef struct PnvMachineClass {
+
+struct PnvMachineClass {
     /*< private >*/
     MachineClass parent_class;
 
@@ -209,7 +210,7 @@ typedef struct PnvMachineClass {
     int compat_size;
 
     void (*dt_power_mgt)(PnvMachineState *pnv, void *fdt);
-} PnvMachineClass;
+};
 
 struct PnvMachineState {
     /*< private >*/
diff --git a/include/hw/ppc/pnv_core.h b/include/hw/ppc/pnv_core.h
index 113550eb7f..5cb22c2fa9 100644
--- a/include/hw/ppc/pnv_core.h
+++ b/include/hw/ppc/pnv_core.h
@@ -22,18 +22,15 @@
 
 #include "hw/cpu/core.h"
 #include "target/ppc/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_PNV_CORE "powernv-cpu-core"
-#define PNV_CORE(obj) \
-    OBJECT_CHECK(PnvCore, (obj), TYPE_PNV_CORE)
-#define PNV_CORE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PnvCoreClass, (klass), TYPE_PNV_CORE)
-#define PNV_CORE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvCoreClass, (obj), TYPE_PNV_CORE)
+OBJECT_DECLARE_TYPE(PnvCore, PnvCoreClass,
+                    pnv_core, PNV_CORE)
 
 typedef struct PnvChip PnvChip;
 
-typedef struct PnvCore {
+struct PnvCore {
     /*< private >*/
     CPUCore parent_obj;
 
@@ -44,13 +41,13 @@ typedef struct PnvCore {
     PnvChip *chip;
 
     MemoryRegion xscom_regs;
-} PnvCore;
+};
 
-typedef struct PnvCoreClass {
+struct PnvCoreClass {
     DeviceClass parent_class;
 
     const MemoryRegionOps *xscom_ops;
-} PnvCoreClass;
+};
 
 #define PNV_CORE_TYPE_SUFFIX "-" TYPE_PNV_CORE
 #define PNV_CORE_TYPE_NAME(cpu_model) cpu_model PNV_CORE_TYPE_SUFFIX
@@ -65,13 +62,14 @@ static inline PnvCPUState *pnv_cpu_state(PowerPCCPU *cpu)
 }
 
 #define TYPE_PNV_QUAD "powernv-cpu-quad"
-#define PNV_QUAD(obj) \
-    OBJECT_CHECK(PnvQuad, (obj), TYPE_PNV_QUAD)
+typedef struct PnvQuad PnvQuad;
+DECLARE_INSTANCE_CHECKER(PnvQuad, PNV_QUAD,
+                         TYPE_PNV_QUAD)
 
-typedef struct PnvQuad {
+struct PnvQuad {
     DeviceState parent_obj;
 
     uint32_t id;
     MemoryRegion xscom_regs;
-} PnvQuad;
+};
 #endif /* PPC_PNV_CORE_H */
diff --git a/include/hw/ppc/pnv_homer.h b/include/hw/ppc/pnv_homer.h
index 1e91c950f6..0978812713 100644
--- a/include/hw/ppc/pnv_homer.h
+++ b/include/hw/ppc/pnv_homer.h
@@ -21,28 +21,28 @@
 #define PPC_PNV_HOMER_H
 
 #include "hw/ppc/pnv.h"
+#include "qom/object.h"
 
 #define TYPE_PNV_HOMER "pnv-homer"
-#define PNV_HOMER(obj) OBJECT_CHECK(PnvHomer, (obj), TYPE_PNV_HOMER)
+OBJECT_DECLARE_TYPE(PnvHomer, PnvHomerClass,
+                    pnv_homer, PNV_HOMER)
 #define TYPE_PNV8_HOMER TYPE_PNV_HOMER "-POWER8"
-#define PNV8_HOMER(obj) OBJECT_CHECK(PnvHomer, (obj), TYPE_PNV8_HOMER)
+DECLARE_INSTANCE_CHECKER(PnvHomer, PNV8_HOMER,
+                         TYPE_PNV8_HOMER)
 #define TYPE_PNV9_HOMER TYPE_PNV_HOMER "-POWER9"
-#define PNV9_HOMER(obj) OBJECT_CHECK(PnvHomer, (obj), TYPE_PNV9_HOMER)
+DECLARE_INSTANCE_CHECKER(PnvHomer, PNV9_HOMER,
+                         TYPE_PNV9_HOMER)
 
-typedef struct PnvHomer {
+struct PnvHomer {
     DeviceState parent;
 
     struct PnvChip *chip;
     MemoryRegion pba_regs;
     MemoryRegion regs;
-} PnvHomer;
+};
 
-#define PNV_HOMER_CLASS(klass)   \
-     OBJECT_CLASS_CHECK(PnvHomerClass, (klass), TYPE_PNV_HOMER)
-#define PNV_HOMER_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvHomerClass, (obj), TYPE_PNV_HOMER)
 
-typedef struct PnvHomerClass {
+struct PnvHomerClass {
     DeviceClass parent_class;
 
     int pba_size;
@@ -51,6 +51,6 @@ typedef struct PnvHomerClass {
     const MemoryRegionOps *homer_ops;
 
     hwaddr core_max_base;
-} PnvHomerClass;
+};
 
 #endif /* PPC_PNV_HOMER_H */
diff --git a/include/hw/ppc/pnv_lpc.h b/include/hw/ppc/pnv_lpc.h
index c1ec85d5e2..cd3c13c2a8 100644
--- a/include/hw/ppc/pnv_lpc.h
+++ b/include/hw/ppc/pnv_lpc.h
@@ -21,20 +21,26 @@
 #define PPC_PNV_LPC_H
 
 #include "hw/ppc/pnv_psi.h"
+#include "qom/object.h"
 
 #define TYPE_PNV_LPC "pnv-lpc"
-#define PNV_LPC(obj) \
-     OBJECT_CHECK(PnvLpcController, (obj), TYPE_PNV_LPC)
+typedef struct PnvLpcClass PnvLpcClass;
+typedef struct PnvLpcController PnvLpcController;
+DECLARE_OBJ_CHECKERS(PnvLpcController, PnvLpcClass,
+                     PNV_LPC, TYPE_PNV_LPC)
 #define TYPE_PNV8_LPC TYPE_PNV_LPC "-POWER8"
-#define PNV8_LPC(obj) OBJECT_CHECK(PnvLpcController, (obj), TYPE_PNV8_LPC)
+DECLARE_INSTANCE_CHECKER(PnvLpcController, PNV8_LPC,
+                         TYPE_PNV8_LPC)
 
 #define TYPE_PNV9_LPC TYPE_PNV_LPC "-POWER9"
-#define PNV9_LPC(obj) OBJECT_CHECK(PnvLpcController, (obj), TYPE_PNV9_LPC)
+DECLARE_INSTANCE_CHECKER(PnvLpcController, PNV9_LPC,
+                         TYPE_PNV9_LPC)
 
 #define TYPE_PNV10_LPC TYPE_PNV_LPC "-POWER10"
-#define PNV10_LPC(obj) OBJECT_CHECK(PnvLpcController, (obj), TYPE_PNV10_LPC)
+DECLARE_INSTANCE_CHECKER(PnvLpcController, PNV10_LPC,
+                         TYPE_PNV10_LPC)
 
-typedef struct PnvLpcController {
+struct PnvLpcController {
     DeviceState parent;
 
     uint64_t eccb_stat_reg;
@@ -79,20 +85,16 @@ typedef struct PnvLpcController {
 
     /* PSI to generate interrupts */
     PnvPsi *psi;
-} PnvLpcController;
+};
 
-#define PNV_LPC_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PnvLpcClass, (klass), TYPE_PNV_LPC)
-#define PNV_LPC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvLpcClass, (obj), TYPE_PNV_LPC)
 
-typedef struct PnvLpcClass {
+struct PnvLpcClass {
     DeviceClass parent_class;
 
     int psi_irq;
 
     DeviceRealize parent_realize;
-} PnvLpcClass;
+};
 
 /*
  * Old compilers error on typdef forward declarations. Keep them happy.
diff --git a/include/hw/ppc/pnv_occ.h b/include/hw/ppc/pnv_occ.h
index f8d3061419..b79e3440be 100644
--- a/include/hw/ppc/pnv_occ.h
+++ b/include/hw/ppc/pnv_occ.h
@@ -21,18 +21,22 @@
 #define PPC_PNV_OCC_H
 
 #include "hw/ppc/pnv_psi.h"
+#include "qom/object.h"
 
 #define TYPE_PNV_OCC "pnv-occ"
-#define PNV_OCC(obj) OBJECT_CHECK(PnvOCC, (obj), TYPE_PNV_OCC)
+OBJECT_DECLARE_TYPE(PnvOCC, PnvOCCClass,
+                    pnv_occ, PNV_OCC)
 #define TYPE_PNV8_OCC TYPE_PNV_OCC "-POWER8"
-#define PNV8_OCC(obj) OBJECT_CHECK(PnvOCC, (obj), TYPE_PNV8_OCC)
+DECLARE_INSTANCE_CHECKER(PnvOCC, PNV8_OCC,
+                         TYPE_PNV8_OCC)
 #define TYPE_PNV9_OCC TYPE_PNV_OCC "-POWER9"
-#define PNV9_OCC(obj) OBJECT_CHECK(PnvOCC, (obj), TYPE_PNV9_OCC)
+DECLARE_INSTANCE_CHECKER(PnvOCC, PNV9_OCC,
+                         TYPE_PNV9_OCC)
 
 #define PNV_OCC_SENSOR_DATA_BLOCK_OFFSET 0x00580000
 #define PNV_OCC_SENSOR_DATA_BLOCK_SIZE   0x00025800
 
-typedef struct PnvOCC {
+struct PnvOCC {
     DeviceState xd;
 
     /* OCC Misc interrupt */
@@ -42,20 +46,16 @@ typedef struct PnvOCC {
 
     MemoryRegion xscom_regs;
     MemoryRegion sram_regs;
-} PnvOCC;
+};
 
-#define PNV_OCC_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PnvOCCClass, (klass), TYPE_PNV_OCC)
-#define PNV_OCC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvOCCClass, (obj), TYPE_PNV_OCC)
 
-typedef struct PnvOCCClass {
+struct PnvOCCClass {
     DeviceClass parent_class;
 
     int xscom_size;
     const MemoryRegionOps *xscom_ops;
     int psi_irq;
-} PnvOCCClass;
+};
 
 #define PNV_OCC_SENSOR_DATA_BLOCK_BASE(i)                               \
     (PNV_OCC_SENSOR_DATA_BLOCK_OFFSET + (i) * PNV_OCC_SENSOR_DATA_BLOCK_SIZE)
diff --git a/include/hw/ppc/pnv_pnor.h b/include/hw/ppc/pnv_pnor.h
index 4f96abdfb4..1ec4098bb9 100644
--- a/include/hw/ppc/pnv_pnor.h
+++ b/include/hw/ppc/pnv_pnor.h
@@ -8,6 +8,7 @@
  */
 #ifndef _PPC_PNV_PNOR_H
 #define _PPC_PNV_PNOR_H
+#include "qom/object.h"
 
 /*
  * PNOR offset on the LPC FW address space
@@ -15,9 +16,11 @@
 #define PNOR_SPI_OFFSET         0x0c000000UL
 
 #define TYPE_PNV_PNOR  "pnv-pnor"
-#define PNV_PNOR(obj)  OBJECT_CHECK(PnvPnor, (obj), TYPE_PNV_PNOR)
+typedef struct PnvPnor PnvPnor;
+DECLARE_INSTANCE_CHECKER(PnvPnor, PNV_PNOR,
+                         TYPE_PNV_PNOR)
 
-typedef struct PnvPnor {
+struct PnvPnor {
     SysBusDevice   parent_obj;
 
     BlockBackend   *blk;
@@ -25,6 +28,6 @@ typedef struct PnvPnor {
     uint8_t        *storage;
     int64_t        size;
     MemoryRegion   mmio;
-} PnvPnor;
+};
 
 #endif /* _PPC_PNV_PNOR_H */
diff --git a/include/hw/ppc/pnv_psi.h b/include/hw/ppc/pnv_psi.h
index 979fc59f33..0034db44c3 100644
--- a/include/hw/ppc/pnv_psi.h
+++ b/include/hw/ppc/pnv_psi.h
@@ -23,14 +23,15 @@
 #include "hw/sysbus.h"
 #include "hw/ppc/xics.h"
 #include "hw/ppc/xive.h"
+#include "qom/object.h"
 
 #define TYPE_PNV_PSI "pnv-psi"
-#define PNV_PSI(obj) \
-     OBJECT_CHECK(PnvPsi, (obj), TYPE_PNV_PSI)
+OBJECT_DECLARE_TYPE(PnvPsi, PnvPsiClass,
+                    pnv_psi, PNV_PSI)
 
 #define PSIHB_XSCOM_MAX         0x20
 
-typedef struct PnvPsi {
+struct PnvPsi {
     DeviceState parent;
 
     MemoryRegion regs_mr;
@@ -47,36 +48,34 @@ typedef struct PnvPsi {
     uint64_t regs[PSIHB_XSCOM_MAX];
 
     MemoryRegion xscom_regs;
-} PnvPsi;
+};
 
 #define TYPE_PNV8_PSI TYPE_PNV_PSI "-POWER8"
-#define PNV8_PSI(obj) \
-    OBJECT_CHECK(Pnv8Psi, (obj), TYPE_PNV8_PSI)
+typedef struct Pnv8Psi Pnv8Psi;
+DECLARE_INSTANCE_CHECKER(Pnv8Psi, PNV8_PSI,
+                         TYPE_PNV8_PSI)
 
-typedef struct Pnv8Psi {
+struct Pnv8Psi {
     PnvPsi   parent;
 
     ICSState ics;
-} Pnv8Psi;
+};
 
 #define TYPE_PNV9_PSI TYPE_PNV_PSI "-POWER9"
-#define PNV9_PSI(obj) \
-    OBJECT_CHECK(Pnv9Psi, (obj), TYPE_PNV9_PSI)
+typedef struct Pnv9Psi Pnv9Psi;
+DECLARE_INSTANCE_CHECKER(Pnv9Psi, PNV9_PSI,
+                         TYPE_PNV9_PSI)
 
-typedef struct Pnv9Psi {
+struct Pnv9Psi {
     PnvPsi   parent;
 
     XiveSource source;
-} Pnv9Psi;
+};
 
 #define TYPE_PNV10_PSI TYPE_PNV_PSI "-POWER10"
 
-#define PNV_PSI_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PnvPsiClass, (klass), TYPE_PNV_PSI)
-#define PNV_PSI_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvPsiClass, (obj), TYPE_PNV_PSI)
 
-typedef struct PnvPsiClass {
+struct PnvPsiClass {
     SysBusDeviceClass parent_class;
 
     uint32_t xscom_pcba;
@@ -86,7 +85,7 @@ typedef struct PnvPsiClass {
     int compat_size;
 
     void (*irq_set)(PnvPsi *psi, int, bool state);
-} PnvPsiClass;
+};
 
 /* The PSI and FSP interrupts are muxed on the same IRQ number */
 typedef enum PnvPsiIrq {
diff --git a/include/hw/ppc/pnv_xive.h b/include/hw/ppc/pnv_xive.h
index 76cf16f644..29d5debd1c 100644
--- a/include/hw/ppc/pnv_xive.h
+++ b/include/hw/ppc/pnv_xive.h
@@ -11,15 +11,13 @@
 #define PPC_PNV_XIVE_H
 
 #include "hw/ppc/xive.h"
+#include "qom/object.h"
 
 struct PnvChip;
 
 #define TYPE_PNV_XIVE "pnv-xive"
-#define PNV_XIVE(obj) OBJECT_CHECK(PnvXive, (obj), TYPE_PNV_XIVE)
-#define PNV_XIVE_CLASS(klass)                                   \
-    OBJECT_CLASS_CHECK(PnvXiveClass, (klass), TYPE_PNV_XIVE)
-#define PNV_XIVE_GET_CLASS(obj)                                 \
-    OBJECT_GET_CLASS(PnvXiveClass, (obj), TYPE_PNV_XIVE)
+OBJECT_DECLARE_TYPE(PnvXive, PnvXiveClass,
+                    pnv_xive, PNV_XIVE)
 
 #define XIVE_BLOCK_MAX      16
 
@@ -28,7 +26,7 @@ struct PnvChip;
 #define XIVE_TABLE_VDT_MAX  16  /* VDT Domain Table (0-15) */
 #define XIVE_TABLE_EDT_MAX  64  /* EDT Domain Table (0-63) */
 
-typedef struct PnvXive {
+struct PnvXive {
     XiveRouter    parent_obj;
 
     /* Owning chip */
@@ -87,13 +85,13 @@ typedef struct PnvXive {
     uint64_t      mig[XIVE_TABLE_MIG_MAX];
     uint64_t      vdt[XIVE_TABLE_VDT_MAX];
     uint64_t      edt[XIVE_TABLE_EDT_MAX];
-} PnvXive;
+};
 
-typedef struct PnvXiveClass {
+struct PnvXiveClass {
     XiveRouterClass parent_class;
 
     DeviceRealize parent_realize;
-} PnvXiveClass;
+};
 
 void pnv_xive_pic_print_info(PnvXive *xive, Monitor *mon);
 
diff --git a/include/hw/ppc/pnv_xscom.h b/include/hw/ppc/pnv_xscom.h
index 09156a5a7a..7e3b189c07 100644
--- a/include/hw/ppc/pnv_xscom.h
+++ b/include/hw/ppc/pnv_xscom.h
@@ -27,16 +27,14 @@ typedef struct PnvXScomInterface PnvXScomInterface;
 #define TYPE_PNV_XSCOM_INTERFACE "pnv-xscom-interface"
 #define PNV_XSCOM_INTERFACE(obj) \
     INTERFACE_CHECK(PnvXScomInterface, (obj), TYPE_PNV_XSCOM_INTERFACE)
-#define PNV_XSCOM_INTERFACE_CLASS(klass)                \
-    OBJECT_CLASS_CHECK(PnvXScomInterfaceClass, (klass), \
+typedef struct PnvXScomInterfaceClass PnvXScomInterfaceClass;
+DECLARE_CLASS_CHECKERS(PnvXScomInterfaceClass, PNV_XSCOM_INTERFACE,
                        TYPE_PNV_XSCOM_INTERFACE)
-#define PNV_XSCOM_INTERFACE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PnvXScomInterfaceClass, (obj), TYPE_PNV_XSCOM_INTERFACE)
 
-typedef struct PnvXScomInterfaceClass {
+struct PnvXScomInterfaceClass {
     InterfaceClass parent;
     int (*dt_xscom)(PnvXScomInterface *dev, void *fdt, int offset);
-} PnvXScomInterfaceClass;
+};
 
 /*
  * Layout of the XSCOM PCB addresses of EX core 1 (POWER 8)
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index e50a2672e3..c8cd63bc06 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -8,6 +8,7 @@
 #include "hw/mem/pc-dimm.h"
 #include "hw/ppc/spapr_ovec.h"
 #include "hw/ppc/spapr_irq.h"
+#include "qom/object.h"
 #include "hw/ppc/spapr_xive.h"  /* For SpaprXive */
 #include "hw/ppc/xics.h"        /* For ICSState */
 #include "hw/ppc/spapr_tpm_proxy.h"
@@ -27,10 +28,10 @@ typedef struct SpaprPendingHpt SpaprPendingHpt;
 
 #define TYPE_SPAPR_RTC "spapr-rtc"
 
-#define SPAPR_RTC(obj)                                  \
-    OBJECT_CHECK(SpaprRtcState, (obj), TYPE_SPAPR_RTC)
-
 typedef struct SpaprRtcState SpaprRtcState;
+DECLARE_INSTANCE_CHECKER(SpaprRtcState, SPAPR_RTC,
+                         TYPE_SPAPR_RTC)
+
 struct SpaprRtcState {
     /*< private >*/
     DeviceState parent_obj;
@@ -42,12 +43,8 @@ typedef struct SpaprMachineClass SpaprMachineClass;
 
 #define TYPE_SPAPR_MACHINE      "spapr-machine"
 typedef struct SpaprMachineState SpaprMachineState;
-#define SPAPR_MACHINE(obj) \
-    OBJECT_CHECK(SpaprMachineState, (obj), TYPE_SPAPR_MACHINE)
-#define SPAPR_MACHINE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(SpaprMachineClass, obj, TYPE_SPAPR_MACHINE)
-#define SPAPR_MACHINE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(SpaprMachineClass, klass, TYPE_SPAPR_MACHINE)
+DECLARE_OBJ_CHECKERS(SpaprMachineState, SpaprMachineClass,
+                     SPAPR_MACHINE, TYPE_SPAPR_MACHINE)
 
 typedef enum {
     SPAPR_RESIZE_HPT_DEFAULT = 0,
@@ -790,12 +787,12 @@ static inline void spapr_dt_irq(uint32_t *intspec, int irq, bool is_lsi)
 typedef struct SpaprTceTable SpaprTceTable;
 
 #define TYPE_SPAPR_TCE_TABLE "spapr-tce-table"
-#define SPAPR_TCE_TABLE(obj) \
-    OBJECT_CHECK(SpaprTceTable, (obj), TYPE_SPAPR_TCE_TABLE)
+DECLARE_INSTANCE_CHECKER(SpaprTceTable, SPAPR_TCE_TABLE,
+                         TYPE_SPAPR_TCE_TABLE)
 
 #define TYPE_SPAPR_IOMMU_MEMORY_REGION "spapr-iommu-memory-region"
-#define SPAPR_IOMMU_MEMORY_REGION(obj) \
-        OBJECT_CHECK(IOMMUMemoryRegion, (obj), TYPE_SPAPR_IOMMU_MEMORY_REGION)
+DECLARE_INSTANCE_CHECKER(IOMMUMemoryRegion, SPAPR_IOMMU_MEMORY_REGION,
+                         TYPE_SPAPR_IOMMU_MEMORY_REGION)
 
 struct SpaprTceTable {
     DeviceState parent;
diff --git a/include/hw/ppc/spapr_cpu_core.h b/include/hw/ppc/spapr_cpu_core.h
index 7aed8f555b..4022917168 100644
--- a/include/hw/ppc/spapr_cpu_core.h
+++ b/include/hw/ppc/spapr_cpu_core.h
@@ -13,18 +13,15 @@
 #include "hw/qdev-core.h"
 #include "target/ppc/cpu-qom.h"
 #include "target/ppc/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_SPAPR_CPU_CORE "spapr-cpu-core"
-#define SPAPR_CPU_CORE(obj) \
-    OBJECT_CHECK(SpaprCpuCore, (obj), TYPE_SPAPR_CPU_CORE)
-#define SPAPR_CPU_CORE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(SpaprCpuCoreClass, (klass), TYPE_SPAPR_CPU_CORE)
-#define SPAPR_CPU_CORE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SpaprCpuCoreClass, (obj), TYPE_SPAPR_CPU_CORE)
+OBJECT_DECLARE_TYPE(SpaprCpuCore, SpaprCpuCoreClass,
+                    spapr_cpu_core, SPAPR_CPU_CORE)
 
 #define SPAPR_CPU_CORE_TYPE_NAME(model) model "-" TYPE_SPAPR_CPU_CORE
 
-typedef struct SpaprCpuCore {
+struct SpaprCpuCore {
     /*< private >*/
     CPUCore parent_obj;
 
@@ -32,12 +29,12 @@ typedef struct SpaprCpuCore {
     PowerPCCPU **threads;
     int node_id;
     bool pre_3_0_migration; /* older machine don't know about SpaprCpuState */
-} SpaprCpuCore;
+};
 
-typedef struct SpaprCpuCoreClass {
+struct SpaprCpuCoreClass {
     DeviceClass parent_class;
     const char *cpu_type;
-} SpaprCpuCoreClass;
+};
 
 const char *spapr_get_cpu_core_type(const char *cpu_type);
 void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip,
diff --git a/include/hw/ppc/spapr_irq.h b/include/hw/ppc/spapr_irq.h
index b161ccebc2..c22a72c9e2 100644
--- a/include/hw/ppc/spapr_irq.h
+++ b/include/hw/ppc/spapr_irq.h
@@ -11,6 +11,7 @@
 #define HW_SPAPR_IRQ_H
 
 #include "target/ppc/cpu-qom.h"
+#include "qom/object.h"
 
 /*
  * IRQ range offsets per device type
@@ -35,12 +36,11 @@ typedef struct SpaprInterruptController SpaprInterruptController;
 #define TYPE_SPAPR_INTC "spapr-interrupt-controller"
 #define SPAPR_INTC(obj)                                     \
     INTERFACE_CHECK(SpaprInterruptController, (obj), TYPE_SPAPR_INTC)
-#define SPAPR_INTC_CLASS(klass)                                     \
-    OBJECT_CLASS_CHECK(SpaprInterruptControllerClass, (klass), TYPE_SPAPR_INTC)
-#define SPAPR_INTC_GET_CLASS(obj)                                   \
-    OBJECT_GET_CLASS(SpaprInterruptControllerClass, (obj), TYPE_SPAPR_INTC)
+typedef struct SpaprInterruptControllerClass SpaprInterruptControllerClass;
+DECLARE_CLASS_CHECKERS(SpaprInterruptControllerClass, SPAPR_INTC,
+                       TYPE_SPAPR_INTC)
 
-typedef struct SpaprInterruptControllerClass {
+struct SpaprInterruptControllerClass {
     InterfaceClass parent;
 
     int (*activate)(SpaprInterruptController *intc, uint32_t nr_servers,
@@ -65,7 +65,7 @@ typedef struct SpaprInterruptControllerClass {
     void (*dt)(SpaprInterruptController *intc, uint32_t nr_servers,
                void *fdt, uint32_t phandle);
     int (*post_load)(SpaprInterruptController *intc, int version_id);
-} SpaprInterruptControllerClass;
+};
 
 void spapr_irq_update_active_intc(struct SpaprMachineState *spapr);
 
diff --git a/include/hw/ppc/spapr_tpm_proxy.h b/include/hw/ppc/spapr_tpm_proxy.h
index c574e22ba4..300c81b1f0 100644
--- a/include/hw/ppc/spapr_tpm_proxy.h
+++ b/include/hw/ppc/spapr_tpm_proxy.h
@@ -17,15 +17,16 @@
 #include "hw/qdev-core.h"
 
 #define TYPE_SPAPR_TPM_PROXY "spapr-tpm-proxy"
-#define SPAPR_TPM_PROXY(obj) OBJECT_CHECK(SpaprTpmProxy, (obj), \
-                                          TYPE_SPAPR_TPM_PROXY)
+typedef struct SpaprTpmProxy SpaprTpmProxy;
+DECLARE_INSTANCE_CHECKER(SpaprTpmProxy, SPAPR_TPM_PROXY,
+                         TYPE_SPAPR_TPM_PROXY)
 
-typedef struct SpaprTpmProxy {
+struct SpaprTpmProxy {
     /*< private >*/
     DeviceState parent;
 
     char *host_path;
     int host_fd;
-} SpaprTpmProxy;
+};
 
 #endif /* HW_SPAPR_TPM_PROXY_H */
diff --git a/include/hw/ppc/spapr_vio.h b/include/hw/ppc/spapr_vio.h
index bed7df60e3..6c40da72ff 100644
--- a/include/hw/ppc/spapr_vio.h
+++ b/include/hw/ppc/spapr_vio.h
@@ -25,17 +25,16 @@
 #include "hw/ppc/spapr.h"
 #include "sysemu/dma.h"
 #include "hw/irq.h"
+#include "qom/object.h"
 
 #define TYPE_VIO_SPAPR_DEVICE "vio-spapr-device"
-#define VIO_SPAPR_DEVICE(obj) \
-     OBJECT_CHECK(SpaprVioDevice, (obj), TYPE_VIO_SPAPR_DEVICE)
-#define VIO_SPAPR_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(SpaprVioDeviceClass, (klass), TYPE_VIO_SPAPR_DEVICE)
-#define VIO_SPAPR_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SpaprVioDeviceClass, (obj), TYPE_VIO_SPAPR_DEVICE)
+OBJECT_DECLARE_TYPE(SpaprVioDevice, SpaprVioDeviceClass,
+                    vio_spapr_device, VIO_SPAPR_DEVICE)
 
 #define TYPE_SPAPR_VIO_BUS "spapr-vio-bus"
-#define SPAPR_VIO_BUS(obj) OBJECT_CHECK(SpaprVioBus, (obj), TYPE_SPAPR_VIO_BUS)
+typedef struct SpaprVioBus SpaprVioBus;
+DECLARE_INSTANCE_CHECKER(SpaprVioBus, SPAPR_VIO_BUS,
+                         TYPE_SPAPR_VIO_BUS)
 
 #define TYPE_SPAPR_VIO_BRIDGE "spapr-vio-bridge"
 
@@ -46,10 +45,8 @@ typedef struct SpaprVioCrq {
     int(*SendFunc)(struct SpaprVioDevice *vdev, uint8_t *crq);
 } SpaprVioCrq;
 
-typedef struct SpaprVioDevice SpaprVioDevice;
-typedef struct SpaprVioBus SpaprVioBus;
 
-typedef struct SpaprVioDeviceClass {
+struct SpaprVioDeviceClass {
     DeviceClass parent_class;
 
     const char *dt_name, *dt_type, *dt_compatible;
@@ -59,7 +56,7 @@ typedef struct SpaprVioDeviceClass {
     void (*reset)(SpaprVioDevice *dev);
     int (*devnode)(SpaprVioDevice *dev, void *fdt, int node_off);
     const char *(*get_dt_compatible)(SpaprVioDevice *dev);
-} SpaprVioDeviceClass;
+};
 
 struct SpaprVioDevice {
     DeviceState qdev;
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 9ed58ec7e9..c5a3cdcadc 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -30,6 +30,7 @@
 
 #include "exec/memory.h"
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define XICS_IPI        0x2
 #define XICS_BUID       0x1
@@ -40,8 +41,6 @@
  * (the kernel implementation supports more but we don't exploit
  *  that yet)
  */
-typedef struct ICPStateClass ICPStateClass;
-typedef struct ICPState ICPState;
 typedef struct PnvICPState PnvICPState;
 typedef struct ICSStateClass ICSStateClass;
 typedef struct ICSState ICSState;
@@ -49,15 +48,13 @@ typedef struct ICSIRQState ICSIRQState;
 typedef struct XICSFabric XICSFabric;
 
 #define TYPE_ICP "icp"
-#define ICP(obj) OBJECT_CHECK(ICPState, (obj), TYPE_ICP)
+OBJECT_DECLARE_TYPE(ICPState, ICPStateClass,
+                    icp, ICP)
 
 #define TYPE_PNV_ICP "pnv-icp"
-#define PNV_ICP(obj) OBJECT_CHECK(PnvICPState, (obj), TYPE_PNV_ICP)
+DECLARE_INSTANCE_CHECKER(PnvICPState, PNV_ICP,
+                         TYPE_PNV_ICP)
 
-#define ICP_CLASS(klass) \
-     OBJECT_CLASS_CHECK(ICPStateClass, (klass), TYPE_ICP)
-#define ICP_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(ICPStateClass, (obj), TYPE_ICP)
 
 struct ICPStateClass {
     DeviceClass parent_class;
@@ -90,12 +87,9 @@ struct PnvICPState {
 };
 
 #define TYPE_ICS "ics"
-#define ICS(obj) OBJECT_CHECK(ICSState, (obj), TYPE_ICS)
+DECLARE_OBJ_CHECKERS(ICSState, ICSStateClass,
+                     ICS, TYPE_ICS)
 
-#define ICS_CLASS(klass) \
-     OBJECT_CLASS_CHECK(ICSStateClass, (klass), TYPE_ICS)
-#define ICS_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(ICSStateClass, (obj), TYPE_ICS)
 
 struct ICSStateClass {
     DeviceClass parent_class;
@@ -145,17 +139,16 @@ struct ICSIRQState {
 #define TYPE_XICS_FABRIC "xics-fabric"
 #define XICS_FABRIC(obj)                                     \
     INTERFACE_CHECK(XICSFabric, (obj), TYPE_XICS_FABRIC)
-#define XICS_FABRIC_CLASS(klass)                                     \
-    OBJECT_CLASS_CHECK(XICSFabricClass, (klass), TYPE_XICS_FABRIC)
-#define XICS_FABRIC_GET_CLASS(obj)                                   \
-    OBJECT_GET_CLASS(XICSFabricClass, (obj), TYPE_XICS_FABRIC)
+typedef struct XICSFabricClass XICSFabricClass;
+DECLARE_CLASS_CHECKERS(XICSFabricClass, XICS_FABRIC,
+                       TYPE_XICS_FABRIC)
 
-typedef struct XICSFabricClass {
+struct XICSFabricClass {
     InterfaceClass parent;
     ICSState *(*ics_get)(XICSFabric *xi, int irq);
     void (*ics_resend)(XICSFabric *xi);
     ICPState *(*icp_get)(XICSFabric *xi, int server);
-} XICSFabricClass;
+};
 
 ICPState *xics_icp_get(XICSFabric *xi, int server);
 
diff --git a/include/hw/ppc/xics_spapr.h b/include/hw/ppc/xics_spapr.h
index 1c65c96e3c..0b8182e40b 100644
--- a/include/hw/ppc/xics_spapr.h
+++ b/include/hw/ppc/xics_spapr.h
@@ -28,9 +28,12 @@
 #define XICS_SPAPR_H
 
 #include "hw/ppc/spapr.h"
+#include "qom/object.h"
 
 #define TYPE_ICS_SPAPR "ics-spapr"
-#define ICS_SPAPR(obj) OBJECT_CHECK(ICSState, (obj), TYPE_ICS_SPAPR)
+/* This is reusing the ICSState typedef from TYPE_ICS */
+DECLARE_INSTANCE_CHECKER(ICSState, ICS_SPAPR,
+                         TYPE_ICS_SPAPR)
 
 int xics_kvm_connect(SpaprInterruptController *intc, uint32_t nr_servers,
                      Error **errp);
diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index 2c42ae92d2..482fafccfd 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -143,6 +143,7 @@
 #include "sysemu/kvm.h"
 #include "hw/sysbus.h"
 #include "hw/ppc/xive_regs.h"
+#include "qom/object.h"
 
 /*
  * XIVE Notifier (Interface between Source and Router)
@@ -153,22 +154,23 @@ typedef struct XiveNotifier XiveNotifier;
 #define TYPE_XIVE_NOTIFIER "xive-notifier"
 #define XIVE_NOTIFIER(obj)                                     \
     INTERFACE_CHECK(XiveNotifier, (obj), TYPE_XIVE_NOTIFIER)
-#define XIVE_NOTIFIER_CLASS(klass)                                     \
-    OBJECT_CLASS_CHECK(XiveNotifierClass, (klass), TYPE_XIVE_NOTIFIER)
-#define XIVE_NOTIFIER_GET_CLASS(obj)                                   \
-    OBJECT_GET_CLASS(XiveNotifierClass, (obj), TYPE_XIVE_NOTIFIER)
+typedef struct XiveNotifierClass XiveNotifierClass;
+DECLARE_CLASS_CHECKERS(XiveNotifierClass, XIVE_NOTIFIER,
+                       TYPE_XIVE_NOTIFIER)
 
-typedef struct XiveNotifierClass {
+struct XiveNotifierClass {
     InterfaceClass parent;
     void (*notify)(XiveNotifier *xn, uint32_t lisn);
-} XiveNotifierClass;
+};
 
 /*
  * XIVE Interrupt Source
  */
 
 #define TYPE_XIVE_SOURCE "xive-source"
-#define XIVE_SOURCE(obj) OBJECT_CHECK(XiveSource, (obj), TYPE_XIVE_SOURCE)
+typedef struct XiveSource XiveSource;
+DECLARE_INSTANCE_CHECKER(XiveSource, XIVE_SOURCE,
+                         TYPE_XIVE_SOURCE)
 
 /*
  * XIVE Interrupt Source characteristics, which define how the ESB are
@@ -177,7 +179,7 @@ typedef struct XiveNotifierClass {
 #define XIVE_SRC_H_INT_ESB     0x1 /* ESB managed with hcall H_INT_ESB */
 #define XIVE_SRC_STORE_EOI     0x2 /* Store EOI supported */
 
-typedef struct XiveSource {
+struct XiveSource {
     DeviceState parent;
 
     /* IRQs */
@@ -198,7 +200,7 @@ typedef struct XiveSource {
     MemoryRegion    esb_mmio_kvm;
 
     XiveNotifier    *xive;
-} XiveSource;
+};
 
 /*
  * ESB MMIO setting. Can be one page, for both source triggering and
@@ -304,7 +306,9 @@ void xive_source_set_irq(void *opaque, int srcno, int val);
  */
 
 #define TYPE_XIVE_TCTX "xive-tctx"
-#define XIVE_TCTX(obj) OBJECT_CHECK(XiveTCTX, (obj), TYPE_XIVE_TCTX)
+typedef struct XiveTCTX XiveTCTX;
+DECLARE_INSTANCE_CHECKER(XiveTCTX, XIVE_TCTX,
+                         TYPE_XIVE_TCTX)
 
 /*
  * XIVE Thread interrupt Management register rings :
@@ -319,7 +323,7 @@ void xive_source_set_irq(void *opaque, int srcno, int val);
 
 typedef struct XivePresenter XivePresenter;
 
-typedef struct XiveTCTX {
+struct XiveTCTX {
     DeviceState parent_obj;
 
     CPUState    *cs;
@@ -329,28 +333,24 @@ typedef struct XiveTCTX {
     uint8_t     regs[XIVE_TM_RING_COUNT * XIVE_TM_RING_SIZE];
 
     XivePresenter *xptr;
-} XiveTCTX;
+};
 
 /*
  * XIVE Router
  */
 typedef struct XiveFabric XiveFabric;
 
-typedef struct XiveRouter {
+struct XiveRouter {
     SysBusDevice    parent;
 
     XiveFabric *xfb;
-} XiveRouter;
+};
 
 #define TYPE_XIVE_ROUTER "xive-router"
-#define XIVE_ROUTER(obj)                                \
-    OBJECT_CHECK(XiveRouter, (obj), TYPE_XIVE_ROUTER)
-#define XIVE_ROUTER_CLASS(klass)                                        \
-    OBJECT_CLASS_CHECK(XiveRouterClass, (klass), TYPE_XIVE_ROUTER)
-#define XIVE_ROUTER_GET_CLASS(obj)                              \
-    OBJECT_GET_CLASS(XiveRouterClass, (obj), TYPE_XIVE_ROUTER)
-
-typedef struct XiveRouterClass {
+OBJECT_DECLARE_TYPE(XiveRouter, XiveRouterClass,
+                    xive_router, XIVE_ROUTER)
+
+struct XiveRouterClass {
     SysBusDeviceClass parent;
 
     /* XIVE table accessors */
@@ -365,7 +365,7 @@ typedef struct XiveRouterClass {
     int (*write_nvt)(XiveRouter *xrtr, uint8_t nvt_blk, uint32_t nvt_idx,
                      XiveNVT *nvt, uint8_t word_number);
     uint8_t (*get_block_id)(XiveRouter *xrtr);
-} XiveRouterClass;
+};
 
 int xive_router_get_eas(XiveRouter *xrtr, uint8_t eas_blk, uint32_t eas_idx,
                         XiveEAS *eas);
@@ -391,19 +391,18 @@ typedef struct XiveTCTXMatch {
 #define TYPE_XIVE_PRESENTER "xive-presenter"
 #define XIVE_PRESENTER(obj)                                     \
     INTERFACE_CHECK(XivePresenter, (obj), TYPE_XIVE_PRESENTER)
-#define XIVE_PRESENTER_CLASS(klass)                                     \
-    OBJECT_CLASS_CHECK(XivePresenterClass, (klass), TYPE_XIVE_PRESENTER)
-#define XIVE_PRESENTER_GET_CLASS(obj)                                   \
-    OBJECT_GET_CLASS(XivePresenterClass, (obj), TYPE_XIVE_PRESENTER)
+typedef struct XivePresenterClass XivePresenterClass;
+DECLARE_CLASS_CHECKERS(XivePresenterClass, XIVE_PRESENTER,
+                       TYPE_XIVE_PRESENTER)
 
-typedef struct XivePresenterClass {
+struct XivePresenterClass {
     InterfaceClass parent;
     int (*match_nvt)(XivePresenter *xptr, uint8_t format,
                      uint8_t nvt_blk, uint32_t nvt_idx,
                      bool cam_ignore, uint8_t priority,
                      uint32_t logic_serv, XiveTCTXMatch *match);
     bool (*in_kernel)(const XivePresenter *xptr);
-} XivePresenterClass;
+};
 
 int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
                               uint8_t format,
@@ -417,28 +416,28 @@ int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
 #define TYPE_XIVE_FABRIC "xive-fabric"
 #define XIVE_FABRIC(obj)                                     \
     INTERFACE_CHECK(XiveFabric, (obj), TYPE_XIVE_FABRIC)
-#define XIVE_FABRIC_CLASS(klass)                                     \
-    OBJECT_CLASS_CHECK(XiveFabricClass, (klass), TYPE_XIVE_FABRIC)
-#define XIVE_FABRIC_GET_CLASS(obj)                                   \
-    OBJECT_GET_CLASS(XiveFabricClass, (obj), TYPE_XIVE_FABRIC)
+typedef struct XiveFabricClass XiveFabricClass;
+DECLARE_CLASS_CHECKERS(XiveFabricClass, XIVE_FABRIC,
+                       TYPE_XIVE_FABRIC)
 
-typedef struct XiveFabricClass {
+struct XiveFabricClass {
     InterfaceClass parent;
     int (*match_nvt)(XiveFabric *xfb, uint8_t format,
                      uint8_t nvt_blk, uint32_t nvt_idx,
                      bool cam_ignore, uint8_t priority,
                      uint32_t logic_serv, XiveTCTXMatch *match);
-} XiveFabricClass;
+};
 
 /*
  * XIVE END ESBs
  */
 
 #define TYPE_XIVE_END_SOURCE "xive-end-source"
-#define XIVE_END_SOURCE(obj) \
-    OBJECT_CHECK(XiveENDSource, (obj), TYPE_XIVE_END_SOURCE)
+typedef struct XiveENDSource XiveENDSource;
+DECLARE_INSTANCE_CHECKER(XiveENDSource, XIVE_END_SOURCE,
+                         TYPE_XIVE_END_SOURCE)
 
-typedef struct XiveENDSource {
+struct XiveENDSource {
     DeviceState parent;
 
     uint32_t        nr_ends;
@@ -448,7 +447,7 @@ typedef struct XiveENDSource {
     MemoryRegion    esb_mmio;
 
     XiveRouter      *xrtr;
-} XiveENDSource;
+};
 
 /*
  * For legacy compatibility, the exceptions define up to 256 different
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index ea3f73a282..e025ba9653 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -12,9 +12,9 @@ enum {
 };
 
 #define TYPE_DEVICE "device"
-#define DEVICE(obj) OBJECT_CHECK(DeviceState, (obj), TYPE_DEVICE)
-#define DEVICE_CLASS(klass) OBJECT_CLASS_CHECK(DeviceClass, (klass), TYPE_DEVICE)
-#define DEVICE_GET_CLASS(obj) OBJECT_GET_CLASS(DeviceClass, (obj), TYPE_DEVICE)
+typedef struct DeviceClass DeviceClass;
+DECLARE_OBJ_CHECKERS(DeviceState, DeviceClass,
+                     DEVICE, TYPE_DEVICE)
 
 typedef enum DeviceCategory {
     DEVICE_CATEGORY_BRIDGE,
@@ -93,7 +93,7 @@ typedef void (*BusUnrealize)(BusState *bus);
  * until it was marked don't hide and qdev_device_add called again.
  *
  */
-typedef struct DeviceClass {
+struct DeviceClass {
     /*< private >*/
     ObjectClass parent_class;
     /*< public >*/
@@ -137,7 +137,7 @@ typedef struct DeviceClass {
 
     /* Private to qdev / bus.  */
     const char *bus_type;
-} DeviceClass;
+};
 
 typedef struct NamedGPIOList NamedGPIOList;
 
@@ -203,9 +203,8 @@ struct DeviceListener {
 };
 
 #define TYPE_BUS "bus"
-#define BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_BUS)
-#define BUS_CLASS(klass) OBJECT_CLASS_CHECK(BusClass, (klass), TYPE_BUS)
-#define BUS_GET_CLASS(obj) OBJECT_GET_CLASS(BusClass, (obj), TYPE_BUS)
+DECLARE_OBJ_CHECKERS(BusState, BusClass,
+                     BUS, TYPE_BUS)
 
 struct BusClass {
     ObjectClass parent_class;
diff --git a/include/hw/rdma/rdma.h b/include/hw/rdma/rdma.h
index fd3d70103d..e77e43a170 100644
--- a/include/hw/rdma/rdma.h
+++ b/include/hw/rdma/rdma.h
@@ -19,22 +19,19 @@
 
 #define INTERFACE_RDMA_PROVIDER "rdma"
 
-#define RDMA_PROVIDER_CLASS(klass) \
-    OBJECT_CLASS_CHECK(RdmaProviderClass, (klass), \
+typedef struct RdmaProviderClass RdmaProviderClass;
+DECLARE_CLASS_CHECKERS(RdmaProviderClass, RDMA_PROVIDER,
                        INTERFACE_RDMA_PROVIDER)
-#define RDMA_PROVIDER_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(RdmaProviderClass, (obj), \
-                     INTERFACE_RDMA_PROVIDER)
 #define RDMA_PROVIDER(obj) \
     INTERFACE_CHECK(RdmaProvider, (obj), \
                     INTERFACE_RDMA_PROVIDER)
 
 typedef struct RdmaProvider RdmaProvider;
 
-typedef struct RdmaProviderClass {
+struct RdmaProviderClass {
     InterfaceClass parent;
 
     void (*print_statistics)(Monitor *mon, RdmaProvider *obj);
-} RdmaProviderClass;
+};
 
 #endif
diff --git a/include/hw/register.h b/include/hw/register.h
index fdac5e69b5..03c8926d27 100644
--- a/include/hw/register.h
+++ b/include/hw/register.h
@@ -14,6 +14,7 @@
 #include "hw/qdev-core.h"
 #include "exec/memory.h"
 #include "hw/registerfields.h"
+#include "qom/object.h"
 
 typedef struct RegisterInfo RegisterInfo;
 typedef struct RegisterAccessInfo RegisterAccessInfo;
@@ -87,7 +88,8 @@ struct RegisterInfo {
 };
 
 #define TYPE_REGISTER "qemu,register"
-#define REGISTER(obj) OBJECT_CHECK(RegisterInfo, (obj), TYPE_REGISTER)
+DECLARE_INSTANCE_CHECKER(RegisterInfo, REGISTER,
+                         TYPE_REGISTER)
 
 /**
  * This structure is used to group all of the individual registers which are
diff --git a/include/hw/resettable.h b/include/hw/resettable.h
index f4c4bab0ef..bdcd1276b6 100644
--- a/include/hw/resettable.h
+++ b/include/hw/resettable.h
@@ -17,11 +17,10 @@
 
 #define TYPE_RESETTABLE_INTERFACE "resettable"
 
-#define RESETTABLE_CLASS(class) \
-    OBJECT_CLASS_CHECK(ResettableClass, (class), TYPE_RESETTABLE_INTERFACE)
+typedef struct ResettableClass ResettableClass;
+DECLARE_CLASS_CHECKERS(ResettableClass, RESETTABLE,
+                       TYPE_RESETTABLE_INTERFACE)
 
-#define RESETTABLE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(ResettableClass, (obj), TYPE_RESETTABLE_INTERFACE)
 
 typedef struct ResettableState ResettableState;
 
@@ -119,7 +118,7 @@ typedef struct ResettablePhases {
     ResettableHoldPhase hold;
     ResettableExitPhase exit;
 } ResettablePhases;
-typedef struct ResettableClass {
+struct ResettableClass {
     InterfaceClass parent_class;
 
     /* Phase methods */
@@ -133,7 +132,7 @@ typedef struct ResettableClass {
 
     /* Hierarchy handling method */
     ResettableChildForeach child_foreach;
-} ResettableClass;
+};
 
 /**
  * ResettableState:
diff --git a/include/hw/riscv/opentitan.h b/include/hw/riscv/opentitan.h
index 835a80f896..8c15b6325f 100644
--- a/include/hw/riscv/opentitan.h
+++ b/include/hw/riscv/opentitan.h
@@ -22,12 +22,14 @@
 #include "hw/riscv/riscv_hart.h"
 #include "hw/intc/ibex_plic.h"
 #include "hw/char/ibex_uart.h"
+#include "qom/object.h"
 
 #define TYPE_RISCV_IBEX_SOC "riscv.lowrisc.ibex.soc"
-#define RISCV_IBEX_SOC(obj) \
-    OBJECT_CHECK(LowRISCIbexSoCState, (obj), TYPE_RISCV_IBEX_SOC)
+typedef struct LowRISCIbexSoCState LowRISCIbexSoCState;
+DECLARE_INSTANCE_CHECKER(LowRISCIbexSoCState, RISCV_IBEX_SOC,
+                         TYPE_RISCV_IBEX_SOC)
 
-typedef struct LowRISCIbexSoCState {
+struct LowRISCIbexSoCState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -38,7 +40,7 @@ typedef struct LowRISCIbexSoCState {
 
     MemoryRegion flash_mem;
     MemoryRegion rom;
-} LowRISCIbexSoCState;
+};
 
 typedef struct OpenTitanState {
     /*< private >*/
diff --git a/include/hw/riscv/riscv_hart.h b/include/hw/riscv/riscv_hart.h
index c75856fa73..9be1fd80ed 100644
--- a/include/hw/riscv/riscv_hart.h
+++ b/include/hw/riscv/riscv_hart.h
@@ -23,13 +23,15 @@
 
 #include "hw/sysbus.h"
 #include "target/riscv/cpu.h"
+#include "qom/object.h"
 
 #define TYPE_RISCV_HART_ARRAY "riscv.hart_array"
 
-#define RISCV_HART_ARRAY(obj) \
-    OBJECT_CHECK(RISCVHartArrayState, (obj), TYPE_RISCV_HART_ARRAY)
+typedef struct RISCVHartArrayState RISCVHartArrayState;
+DECLARE_INSTANCE_CHECKER(RISCVHartArrayState, RISCV_HART_ARRAY,
+                         TYPE_RISCV_HART_ARRAY)
 
-typedef struct RISCVHartArrayState {
+struct RISCVHartArrayState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -38,6 +40,6 @@ typedef struct RISCVHartArrayState {
     uint32_t hartid_base;
     char *cpu_type;
     RISCVCPU *harts;
-} RISCVHartArrayState;
+};
 
 #endif
diff --git a/include/hw/riscv/spike.h b/include/hw/riscv/spike.h
index b0a18a9c94..cddeca2e77 100644
--- a/include/hw/riscv/spike.h
+++ b/include/hw/riscv/spike.h
@@ -21,15 +21,17 @@
 
 #include "hw/riscv/riscv_hart.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define SPIKE_CPUS_MAX 8
 #define SPIKE_SOCKETS_MAX 8
 
 #define TYPE_SPIKE_MACHINE MACHINE_TYPE_NAME("spike")
-#define SPIKE_MACHINE(obj) \
-    OBJECT_CHECK(SpikeState, (obj), TYPE_SPIKE_MACHINE)
+typedef struct SpikeState SpikeState;
+DECLARE_INSTANCE_CHECKER(SpikeState, SPIKE_MACHINE,
+                         TYPE_SPIKE_MACHINE)
 
-typedef struct {
+struct SpikeState {
     /*< private >*/
     MachineState parent;
 
@@ -37,7 +39,7 @@ typedef struct {
     RISCVHartArrayState soc[SPIKE_SOCKETS_MAX];
     void *fdt;
     int fdt_size;
-} SpikeState;
+};
 
 enum {
     SPIKE_MROM,
diff --git a/include/hw/riscv/virt.h b/include/hw/riscv/virt.h
index 1beacd7666..b4ed9a32eb 100644
--- a/include/hw/riscv/virt.h
+++ b/include/hw/riscv/virt.h
@@ -22,15 +22,17 @@
 #include "hw/riscv/riscv_hart.h"
 #include "hw/sysbus.h"
 #include "hw/block/flash.h"
+#include "qom/object.h"
 
 #define VIRT_CPUS_MAX 8
 #define VIRT_SOCKETS_MAX 8
 
 #define TYPE_RISCV_VIRT_MACHINE MACHINE_TYPE_NAME("virt")
-#define RISCV_VIRT_MACHINE(obj) \
-    OBJECT_CHECK(RISCVVirtState, (obj), TYPE_RISCV_VIRT_MACHINE)
+typedef struct RISCVVirtState RISCVVirtState;
+DECLARE_INSTANCE_CHECKER(RISCVVirtState, RISCV_VIRT_MACHINE,
+                         TYPE_RISCV_VIRT_MACHINE)
 
-typedef struct {
+struct RISCVVirtState {
     /*< private >*/
     MachineState parent;
 
@@ -41,7 +43,7 @@ typedef struct {
 
     void *fdt;
     int fdt_size;
-} RISCVVirtState;
+};
 
 enum {
     VIRT_DEBUG,
diff --git a/include/hw/rtc/allwinner-rtc.h b/include/hw/rtc/allwinner-rtc.h
index 7893f74795..5a6e9fff32 100644
--- a/include/hw/rtc/allwinner-rtc.h
+++ b/include/hw/rtc/allwinner-rtc.h
@@ -60,19 +60,17 @@
  * @{
  */
 
-#define AW_RTC(obj) \
-    OBJECT_CHECK(AwRtcState, (obj), TYPE_AW_RTC)
-#define AW_RTC_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AwRtcClass, (klass), TYPE_AW_RTC)
-#define AW_RTC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AwRtcClass, (obj), TYPE_AW_RTC)
+typedef struct AwRtcClass AwRtcClass;
+typedef struct AwRtcState AwRtcState;
+DECLARE_OBJ_CHECKERS(AwRtcState, AwRtcClass,
+                     AW_RTC, TYPE_AW_RTC)
 
 /** @} */
 
 /**
  * Allwinner RTC per-object instance state.
  */
-typedef struct AwRtcState {
+struct AwRtcState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -92,7 +90,7 @@ typedef struct AwRtcState {
     /** Array of hardware registers */
     uint32_t regs[AW_RTC_REGS_NUM];
 
-} AwRtcState;
+};
 
 /**
  * Allwinner RTC class-level struct.
@@ -101,7 +99,7 @@ typedef struct AwRtcState {
  * such that the generic code can use this struct to support
  * all devices.
  */
-typedef struct AwRtcClass {
+struct AwRtcClass {
     /*< private >*/
     SysBusDeviceClass parent_class;
     /*< public >*/
@@ -129,6 +127,6 @@ typedef struct AwRtcClass {
      */
     bool (*write)(AwRtcState *s, uint32_t offset, uint32_t data);
 
-} AwRtcClass;
+};
 
 #endif /* HW_MISC_ALLWINNER_RTC_H */
diff --git a/include/hw/rtc/aspeed_rtc.h b/include/hw/rtc/aspeed_rtc.h
index b94a710268..d7691ab88f 100644
--- a/include/hw/rtc/aspeed_rtc.h
+++ b/include/hw/rtc/aspeed_rtc.h
@@ -9,8 +9,9 @@
 #define HW_RTC_ASPEED_RTC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
-typedef struct AspeedRtcState {
+struct AspeedRtcState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -19,9 +20,11 @@ typedef struct AspeedRtcState {
     uint32_t reg[0x18];
     int offset;
 
-} AspeedRtcState;
+};
+typedef struct AspeedRtcState AspeedRtcState;
 
 #define TYPE_ASPEED_RTC "aspeed.rtc"
-#define ASPEED_RTC(obj) OBJECT_CHECK(AspeedRtcState, (obj), TYPE_ASPEED_RTC)
+DECLARE_INSTANCE_CHECKER(AspeedRtcState, ASPEED_RTC,
+                         TYPE_ASPEED_RTC)
 
 #endif /* HW_RTC_ASPEED_RTC_H */
diff --git a/include/hw/rtc/goldfish_rtc.h b/include/hw/rtc/goldfish_rtc.h
index 9bd8924f5f..b710c21c94 100644
--- a/include/hw/rtc/goldfish_rtc.h
+++ b/include/hw/rtc/goldfish_rtc.h
@@ -23,12 +23,14 @@
 #define HW_RTC_GOLDFISH_RTC_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_GOLDFISH_RTC "goldfish_rtc"
-#define GOLDFISH_RTC(obj) \
-    OBJECT_CHECK(GoldfishRTCState, (obj), TYPE_GOLDFISH_RTC)
+typedef struct GoldfishRTCState GoldfishRTCState;
+DECLARE_INSTANCE_CHECKER(GoldfishRTCState, GOLDFISH_RTC,
+                         TYPE_GOLDFISH_RTC)
 
-typedef struct GoldfishRTCState {
+struct GoldfishRTCState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -42,6 +44,6 @@ typedef struct GoldfishRTCState {
     uint32_t irq_pending;
     uint32_t irq_enabled;
     uint32_t time_high;
-} GoldfishRTCState;
+};
 
 #endif
diff --git a/include/hw/rtc/m48t59.h b/include/hw/rtc/m48t59.h
index e7ea4e8761..04abedf3b2 100644
--- a/include/hw/rtc/m48t59.h
+++ b/include/hw/rtc/m48t59.h
@@ -31,22 +31,21 @@
 
 #define TYPE_NVRAM "nvram"
 
-#define NVRAM_CLASS(klass) \
-    OBJECT_CLASS_CHECK(NvramClass, (klass), TYPE_NVRAM)
-#define NVRAM_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(NvramClass, (obj), TYPE_NVRAM)
+typedef struct NvramClass NvramClass;
+DECLARE_CLASS_CHECKERS(NvramClass, NVRAM,
+                       TYPE_NVRAM)
 #define NVRAM(obj) \
     INTERFACE_CHECK(Nvram, (obj), TYPE_NVRAM)
 
 typedef struct Nvram Nvram;
 
-typedef struct NvramClass {
+struct NvramClass {
     InterfaceClass parent;
 
     uint32_t (*read)(Nvram *obj, uint32_t addr);
     void (*write)(Nvram *obj, uint32_t addr, uint32_t val);
     void (*toggle_lock)(Nvram *obj, int lock);
-} NvramClass;
+};
 
 Nvram *m48t59_init_isa(ISABus *bus, uint32_t io_base, uint16_t size,
                        int base_year, int type);
diff --git a/include/hw/rtc/mc146818rtc.h b/include/hw/rtc/mc146818rtc.h
index 3713181b56..e58e006d0d 100644
--- a/include/hw/rtc/mc146818rtc.h
+++ b/include/hw/rtc/mc146818rtc.h
@@ -13,11 +13,14 @@
 #include "qemu/queue.h"
 #include "qemu/timer.h"
 #include "hw/isa/isa.h"
+#include "qom/object.h"
 
 #define TYPE_MC146818_RTC "mc146818rtc"
-#define MC146818_RTC(obj) OBJECT_CHECK(RTCState, (obj), TYPE_MC146818_RTC)
+typedef struct RTCState RTCState;
+DECLARE_INSTANCE_CHECKER(RTCState, MC146818_RTC,
+                         TYPE_MC146818_RTC)
 
-typedef struct RTCState {
+struct RTCState {
     ISADevice parent_obj;
 
     MemoryRegion io;
@@ -44,7 +47,7 @@ typedef struct RTCState {
     LostTickPolicy lost_tick_policy;
     Notifier suspend_notifier;
     QLIST_ENTRY(RTCState) link;
-} RTCState;
+};
 
 #define RTC_ISA_IRQ 8
 #define RTC_ISA_BASE 0x70
diff --git a/include/hw/rtc/pl031.h b/include/hw/rtc/pl031.h
index e3cb1d646f..3897b424d4 100644
--- a/include/hw/rtc/pl031.h
+++ b/include/hw/rtc/pl031.h
@@ -16,11 +16,14 @@
 
 #include "hw/sysbus.h"
 #include "qemu/timer.h"
+#include "qom/object.h"
 
 #define TYPE_PL031 "pl031"
-#define PL031(obj) OBJECT_CHECK(PL031State, (obj), TYPE_PL031)
+typedef struct PL031State PL031State;
+DECLARE_INSTANCE_CHECKER(PL031State, PL031,
+                         TYPE_PL031)
 
-typedef struct PL031State {
+struct PL031State {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -42,6 +45,6 @@ typedef struct PL031State {
     uint32_t cr;
     uint32_t im;
     uint32_t is;
-} PL031State;
+};
 
 #endif
diff --git a/include/hw/rtc/xlnx-zynqmp-rtc.h b/include/hw/rtc/xlnx-zynqmp-rtc.h
index 6fa1cb2f43..209de85ae6 100644
--- a/include/hw/rtc/xlnx-zynqmp-rtc.h
+++ b/include/hw/rtc/xlnx-zynqmp-rtc.h
@@ -29,11 +29,13 @@
 
 #include "hw/register.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_XLNX_ZYNQMP_RTC "xlnx-zynmp.rtc"
 
-#define XLNX_ZYNQMP_RTC(obj) \
-     OBJECT_CHECK(XlnxZynqMPRTC, (obj), TYPE_XLNX_ZYNQMP_RTC)
+typedef struct XlnxZynqMPRTC XlnxZynqMPRTC;
+DECLARE_INSTANCE_CHECKER(XlnxZynqMPRTC, XLNX_ZYNQMP_RTC,
+                         TYPE_XLNX_ZYNQMP_RTC)
 
 REG32(SET_TIME_WRITE, 0x0)
 REG32(SET_TIME_READ, 0x4)
@@ -77,7 +79,7 @@ REG32(SAFETY_CHK, 0x50)
 
 #define XLNX_ZYNQMP_RTC_R_MAX (R_SAFETY_CHK + 1)
 
-typedef struct XlnxZynqMPRTC {
+struct XlnxZynqMPRTC {
     SysBusDevice parent_obj;
     MemoryRegion iomem;
     qemu_irq irq_rtc_int;
@@ -87,6 +89,6 @@ typedef struct XlnxZynqMPRTC {
 
     uint32_t regs[XLNX_ZYNQMP_RTC_R_MAX];
     RegisterInfo regs_info[XLNX_ZYNQMP_RTC_R_MAX];
-} XlnxZynqMPRTC;
+};
 
 #endif
diff --git a/include/hw/rx/rx62n.h b/include/hw/rx/rx62n.h
index aa94758c27..3ed80dba0d 100644
--- a/include/hw/rx/rx62n.h
+++ b/include/hw/rx/rx62n.h
@@ -30,9 +30,12 @@
 #include "hw/timer/renesas_cmt.h"
 #include "hw/char/renesas_sci.h"
 #include "qemu/units.h"
+#include "qom/object.h"
 
 #define TYPE_RX62N_MCU "rx62n-mcu"
-#define RX62N_MCU(obj) OBJECT_CHECK(RX62NState, (obj), TYPE_RX62N_MCU)
+typedef struct RX62NState RX62NState;
+DECLARE_INSTANCE_CHECKER(RX62NState, RX62N_MCU,
+                         TYPE_RX62N_MCU)
 
 #define TYPE_R5F562N7_MCU "r5f562n7-mcu"
 #define TYPE_R5F562N8_MCU "r5f562n8-mcu"
@@ -45,7 +48,7 @@
 #define RX62N_NR_CMT    2
 #define RX62N_NR_SCI    6
 
-typedef struct RX62NState {
+struct RX62NState {
     /*< private >*/
     DeviceState parent_obj;
     /*< public >*/
@@ -71,6 +74,6 @@ typedef struct RX62NState {
     uint32_t xtal_freq_hz;
     /* Peripheral Module Clock frequency */
     uint32_t pclk_freq_hz;
-} RX62NState;
+};
 
 #endif
diff --git a/include/hw/s390x/3270-ccw.h b/include/hw/s390x/3270-ccw.h
index 9d1d18e2bd..9a11093192 100644
--- a/include/hw/s390x/3270-ccw.h
+++ b/include/hw/s390x/3270-ccw.h
@@ -16,6 +16,7 @@
 #include "hw/sysbus.h"
 #include "hw/s390x/css.h"
 #include "hw/s390x/ccw-device.h"
+#include "qom/object.h"
 
 #define EMULATED_CCW_3270_CU_TYPE 0x3270
 #define EMULATED_CCW_3270_CHPID_TYPE 0x1a
@@ -30,23 +31,21 @@
 #define TC_EWRITEA 0x0d         /* Erase write alternate */
 #define TC_WRITESF 0x11         /* Write structured field */
 
-#define EMULATED_CCW_3270(obj) \
-     OBJECT_CHECK(EmulatedCcw3270Device, (obj), TYPE_EMULATED_CCW_3270)
-#define EMULATED_CCW_3270_CLASS(klass) \
-     OBJECT_CLASS_CHECK(EmulatedCcw3270Class, (klass), TYPE_EMULATED_CCW_3270)
-#define EMULATED_CCW_3270_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(EmulatedCcw3270Class, (obj), TYPE_EMULATED_CCW_3270)
+typedef struct EmulatedCcw3270Class EmulatedCcw3270Class;
+typedef struct EmulatedCcw3270Device EmulatedCcw3270Device;
+DECLARE_OBJ_CHECKERS(EmulatedCcw3270Device, EmulatedCcw3270Class,
+                     EMULATED_CCW_3270, TYPE_EMULATED_CCW_3270)
 
-typedef struct EmulatedCcw3270Device {
+struct EmulatedCcw3270Device {
     CcwDevice parent_obj;
-} EmulatedCcw3270Device;
+};
 
-typedef struct EmulatedCcw3270Class {
+struct EmulatedCcw3270Class {
     CCWDeviceClass parent_class;
 
     void (*init)(EmulatedCcw3270Device *, Error **);
     int (*read_payload_3270)(EmulatedCcw3270Device *);
     int (*write_payload_3270)(EmulatedCcw3270Device *, uint8_t);
-} EmulatedCcw3270Class;
+};
 
 #endif
diff --git a/include/hw/s390x/ap-device.h b/include/hw/s390x/ap-device.h
index 8df9cd2954..e502745de5 100644
--- a/include/hw/s390x/ap-device.h
+++ b/include/hw/s390x/ap-device.h
@@ -12,14 +12,16 @@
 #define HW_S390X_AP_DEVICE_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
-#define AP_DEVICE_TYPE       "ap-device"
+#define TYPE_AP_DEVICE       "ap-device"
 
-typedef struct APDevice {
+struct APDevice {
     DeviceState parent_obj;
-} APDevice;
+};
+typedef struct APDevice APDevice;
 
-#define AP_DEVICE(obj) \
-    OBJECT_CHECK(APDevice, (obj), AP_DEVICE_TYPE)
+DECLARE_INSTANCE_CHECKER(APDevice, AP_DEVICE,
+                         TYPE_AP_DEVICE)
 
 #endif /* HW_S390X_AP_DEVICE_H */
diff --git a/include/hw/s390x/css-bridge.h b/include/hw/s390x/css-bridge.h
index f7ed2d9a03..9fd4484204 100644
--- a/include/hw/s390x/css-bridge.h
+++ b/include/hw/s390x/css-bridge.h
@@ -17,23 +17,25 @@
 #include "hw/sysbus.h"
 
 /* virtual css bridge */
-typedef struct VirtualCssBridge {
+struct VirtualCssBridge {
     SysBusDevice sysbus_dev;
     bool css_dev_path;
-} VirtualCssBridge;
+};
+typedef struct VirtualCssBridge VirtualCssBridge;
 
 #define TYPE_VIRTUAL_CSS_BRIDGE "virtual-css-bridge"
-#define VIRTUAL_CSS_BRIDGE(obj) \
-    OBJECT_CHECK(VirtualCssBridge, (obj), TYPE_VIRTUAL_CSS_BRIDGE)
+DECLARE_INSTANCE_CHECKER(VirtualCssBridge, VIRTUAL_CSS_BRIDGE,
+                         TYPE_VIRTUAL_CSS_BRIDGE)
 
 /* virtual css bus type */
-typedef struct VirtualCssBus {
+struct VirtualCssBus {
     BusState parent_obj;
-} VirtualCssBus;
+};
+typedef struct VirtualCssBus VirtualCssBus;
 
 #define TYPE_VIRTUAL_CSS_BUS "virtual-css-bus"
-#define VIRTUAL_CSS_BUS(obj) \
-     OBJECT_CHECK(VirtualCssBus, (obj), TYPE_VIRTUAL_CSS_BUS)
+DECLARE_INSTANCE_CHECKER(VirtualCssBus, VIRTUAL_CSS_BUS,
+                         TYPE_VIRTUAL_CSS_BUS)
 VirtualCssBus *virtual_css_bus_init(void);
 
 #endif
diff --git a/include/hw/s390x/event-facility.h b/include/hw/s390x/event-facility.h
index e61c4651d7..051c1c6576 100644
--- a/include/hw/s390x/event-facility.h
+++ b/include/hw/s390x/event-facility.h
@@ -18,6 +18,7 @@
 #include "qemu/thread.h"
 #include "hw/qdev-core.h"
 #include "hw/s390x/sclp.h"
+#include "qom/object.h"
 
 /* SCLP event types */
 #define SCLP_EVENT_OPRTNS_COMMAND               0x01
@@ -41,12 +42,8 @@
 #define SCLP_SELECTIVE_READ                     0x01
 
 #define TYPE_SCLP_EVENT "s390-sclp-event-type"
-#define SCLP_EVENT(obj) \
-     OBJECT_CHECK(SCLPEvent, (obj), TYPE_SCLP_EVENT)
-#define SCLP_EVENT_CLASS(klass) \
-     OBJECT_CLASS_CHECK(SCLPEventClass, (klass), TYPE_SCLP_EVENT)
-#define SCLP_EVENT_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SCLPEventClass, (obj), TYPE_SCLP_EVENT)
+OBJECT_DECLARE_TYPE(SCLPEvent, SCLPEventClass,
+                    sclp_event, SCLP_EVENT)
 
 #define TYPE_SCLP_CPU_HOTPLUG "sclp-cpu-hotplug"
 #define TYPE_SCLP_QUIESCE "sclpquiesce"
@@ -169,13 +166,13 @@ typedef struct ReadEventData {
     };
 } QEMU_PACKED ReadEventData;
 
-typedef struct SCLPEvent {
+struct SCLPEvent {
     DeviceState qdev;
     bool event_pending;
     char *name;
-} SCLPEvent;
+};
 
-typedef struct SCLPEventClass {
+struct SCLPEventClass {
     DeviceClass parent_class;
     int (*init)(SCLPEvent *event);
 
@@ -192,24 +189,19 @@ typedef struct SCLPEventClass {
 
     /* can we handle this event type? */
     bool (*can_handle_event)(uint8_t type);
-} SCLPEventClass;
+};
 
 #define TYPE_SCLP_EVENT_FACILITY "s390-sclp-event-facility"
 typedef struct SCLPEventFacility SCLPEventFacility;
-#define EVENT_FACILITY(obj) \
-     OBJECT_CHECK(SCLPEventFacility, (obj), TYPE_SCLP_EVENT_FACILITY)
-#define EVENT_FACILITY_CLASS(klass) \
-     OBJECT_CLASS_CHECK(SCLPEventFacilityClass, (klass), \
-                        TYPE_SCLP_EVENT_FACILITY)
-#define EVENT_FACILITY_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SCLPEventFacilityClass, (obj), \
-                      TYPE_SCLP_EVENT_FACILITY)
-
-typedef struct SCLPEventFacilityClass {
+typedef struct SCLPEventFacilityClass SCLPEventFacilityClass;
+DECLARE_OBJ_CHECKERS(SCLPEventFacility, SCLPEventFacilityClass,
+                     EVENT_FACILITY, TYPE_SCLP_EVENT_FACILITY)
+
+struct SCLPEventFacilityClass {
     SysBusDeviceClass parent_class;
     void (*command_handler)(SCLPEventFacility *ef, SCCB *sccb, uint64_t code);
     bool (*event_pending)(SCLPEventFacility *ef);
-} SCLPEventFacilityClass;
+};
 
 BusState *sclp_get_event_facility_bus(void);
 
diff --git a/include/hw/s390x/s390-ccw.h b/include/hw/s390x/s390-ccw.h
index d8e08b5f4c..2c807ee3a1 100644
--- a/include/hw/s390x/s390-ccw.h
+++ b/include/hw/s390x/s390-ccw.h
@@ -14,23 +14,22 @@
 #define HW_S390_CCW_H
 
 #include "hw/s390x/ccw-device.h"
+#include "qom/object.h"
 
 #define TYPE_S390_CCW "s390-ccw"
-#define S390_CCW_DEVICE(obj) \
-    OBJECT_CHECK(S390CCWDevice, (obj), TYPE_S390_CCW)
-#define S390_CCW_DEVICE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(S390CCWDeviceClass, (klass), TYPE_S390_CCW)
-#define S390_CCW_DEVICE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(S390CCWDeviceClass, (obj), TYPE_S390_CCW)
+typedef struct S390CCWDevice S390CCWDevice;
+typedef struct S390CCWDeviceClass S390CCWDeviceClass;
+DECLARE_OBJ_CHECKERS(S390CCWDevice, S390CCWDeviceClass,
+                     S390_CCW_DEVICE, TYPE_S390_CCW)
 
-typedef struct S390CCWDevice {
+struct S390CCWDevice {
     CcwDevice parent_obj;
     CssDevId hostid;
     char *mdevid;
     int32_t bootindex;
-} S390CCWDevice;
+};
 
-typedef struct S390CCWDeviceClass {
+struct S390CCWDeviceClass {
     CCWDeviceClass parent_class;
     void (*realize)(S390CCWDevice *dev, char *sysfsdev, Error **errp);
     void (*unrealize)(S390CCWDevice *dev);
@@ -38,6 +37,6 @@ typedef struct S390CCWDeviceClass {
     int (*handle_halt) (SubchDev *sch);
     int (*handle_clear) (SubchDev *sch);
     IOInstEnding (*handle_store) (SubchDev *sch);
-} S390CCWDeviceClass;
+};
 
 #endif
diff --git a/include/hw/s390x/s390-virtio-ccw.h b/include/hw/s390x/s390-virtio-ccw.h
index caf4962d29..54d14da0a6 100644
--- a/include/hw/s390x/s390-virtio-ccw.h
+++ b/include/hw/s390x/s390-virtio-ccw.h
@@ -12,16 +12,17 @@
 #define HW_S390X_S390_VIRTIO_CCW_H
 
 #include "hw/boards.h"
+#include "qom/object.h"
 
 #define TYPE_S390_CCW_MACHINE               "s390-ccw-machine"
 
-#define S390_CCW_MACHINE(obj) \
-    OBJECT_CHECK(S390CcwMachineState, (obj), TYPE_S390_CCW_MACHINE)
+typedef struct S390CcwMachineClass S390CcwMachineClass;
+typedef struct S390CcwMachineState S390CcwMachineState;
+DECLARE_OBJ_CHECKERS(S390CcwMachineState, S390CcwMachineClass,
+                     S390_CCW_MACHINE, TYPE_S390_CCW_MACHINE)
 
-#define S390_CCW_MACHINE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(S390CcwMachineClass, (klass), TYPE_S390_CCW_MACHINE)
 
-typedef struct S390CcwMachineState {
+struct S390CcwMachineState {
     /*< private >*/
     MachineState parent_obj;
 
@@ -30,9 +31,9 @@ typedef struct S390CcwMachineState {
     bool dea_key_wrap;
     bool pv;
     uint8_t loadparm[8];
-} S390CcwMachineState;
+};
 
-typedef struct S390CcwMachineClass {
+struct S390CcwMachineClass {
     /*< private >*/
     MachineClass parent_class;
 
@@ -41,7 +42,7 @@ typedef struct S390CcwMachineClass {
     bool cpu_model_allowed;
     bool css_migration_enabled;
     bool hpage_1m_allowed;
-} S390CcwMachineClass;
+};
 
 /* runtime-instrumentation allowed by the machine */
 bool ri_allowed(void);
diff --git a/include/hw/s390x/s390_flic.h b/include/hw/s390x/s390_flic.h
index df11de9b20..4b718c8ebf 100644
--- a/include/hw/s390x/s390_flic.h
+++ b/include/hw/s390x/s390_flic.h
@@ -17,6 +17,7 @@
 #include "hw/s390x/adapter.h"
 #include "hw/virtio/virtio.h"
 #include "qemu/queue.h"
+#include "qom/object.h"
 
 /*
  * Reserve enough gsis to accommodate all virtio devices.
@@ -38,22 +39,18 @@ extern const VMStateDescription vmstate_adapter_routes;
     VMSTATE_STRUCT(_f, _s, 1, vmstate_adapter_routes, AdapterRoutes)
 
 #define TYPE_S390_FLIC_COMMON "s390-flic"
-#define S390_FLIC_COMMON(obj) \
-    OBJECT_CHECK(S390FLICState, (obj), TYPE_S390_FLIC_COMMON)
+OBJECT_DECLARE_TYPE(S390FLICState, S390FLICStateClass,
+                    s390_flic_common, S390_FLIC_COMMON)
 
-typedef struct S390FLICState {
+struct S390FLICState {
     SysBusDevice parent_obj;
     /* to limit AdapterRoutes.num_routes for compat */
     uint32_t adapter_routes_max_batch;
     bool ais_supported;
-} S390FLICState;
+};
 
-#define S390_FLIC_COMMON_CLASS(klass) \
-    OBJECT_CLASS_CHECK(S390FLICStateClass, (klass), TYPE_S390_FLIC_COMMON)
-#define S390_FLIC_COMMON_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(S390FLICStateClass, (obj), TYPE_S390_FLIC_COMMON)
 
-typedef struct S390FLICStateClass {
+struct S390FLICStateClass {
     DeviceClass parent_class;
 
     int (*register_io_adapter)(S390FLICState *fs, uint32_t id, uint8_t isc,
@@ -72,16 +69,17 @@ typedef struct S390FLICStateClass {
                       uint16_t subchannel_nr, uint32_t io_int_parm,
                       uint32_t io_int_word);
     void (*inject_crw_mchk)(S390FLICState *fs);
-} S390FLICStateClass;
+};
 
 #define TYPE_KVM_S390_FLIC "s390-flic-kvm"
 typedef struct KVMS390FLICState KVMS390FLICState;
-#define KVM_S390_FLIC(obj) \
-    OBJECT_CHECK(KVMS390FLICState, (obj), TYPE_KVM_S390_FLIC)
+DECLARE_INSTANCE_CHECKER(KVMS390FLICState, KVM_S390_FLIC,
+                         TYPE_KVM_S390_FLIC)
 
 #define TYPE_QEMU_S390_FLIC "s390-flic-qemu"
-#define QEMU_S390_FLIC(obj) \
-    OBJECT_CHECK(QEMUS390FLICState, (obj), TYPE_QEMU_S390_FLIC)
+typedef struct QEMUS390FLICState QEMUS390FLICState;
+DECLARE_INSTANCE_CHECKER(QEMUS390FLICState, QEMU_S390_FLIC,
+                         TYPE_QEMU_S390_FLIC)
 
 #define SIC_IRQ_MODE_ALL 0
 #define SIC_IRQ_MODE_SINGLE 1
@@ -115,14 +113,14 @@ typedef struct QEMUS390FlicIO {
     QLIST_ENTRY(QEMUS390FlicIO) next;
 } QEMUS390FlicIO;
 
-typedef struct QEMUS390FLICState {
+struct QEMUS390FLICState {
     S390FLICState parent_obj;
     uint32_t pending;
     uint32_t service_param;
     uint8_t simm;
     uint8_t nimm;
     QLIST_HEAD(, QEMUS390FlicIO) io[8];
-} QEMUS390FLICState;
+};
 
 uint32_t qemu_s390_flic_dequeue_service(QEMUS390FLICState *flic);
 QEMUS390FlicIO *qemu_s390_flic_dequeue_io(QEMUS390FLICState *flic,
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index a87ed2a0ab..e9f0f7e67c 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -16,6 +16,7 @@
 
 #include "hw/sysbus.h"
 #include "target/s390x/cpu-qom.h"
+#include "qom/object.h"
 
 #define SCLP_CMD_CODE_MASK                      0xffff00ff
 
@@ -181,22 +182,21 @@ typedef struct SCCB {
  } QEMU_PACKED SCCB;
 
 #define TYPE_SCLP "sclp"
-#define SCLP(obj) OBJECT_CHECK(SCLPDevice, (obj), TYPE_SCLP)
-#define SCLP_CLASS(oc) OBJECT_CLASS_CHECK(SCLPDeviceClass, (oc), TYPE_SCLP)
-#define SCLP_GET_CLASS(obj) OBJECT_GET_CLASS(SCLPDeviceClass, (obj), TYPE_SCLP)
+OBJECT_DECLARE_TYPE(SCLPDevice, SCLPDeviceClass,
+                    sclp, SCLP)
 
 struct SCLPEventFacility;
 
-typedef struct SCLPDevice {
+struct SCLPDevice {
     /* private */
     DeviceState parent_obj;
     struct SCLPEventFacility *event_facility;
     int increment_size;
 
     /* public */
-} SCLPDevice;
+};
 
-typedef struct SCLPDeviceClass {
+struct SCLPDeviceClass {
     /* private */
     DeviceClass parent_class;
     void (*read_SCP_info)(SCLPDevice *sclp, SCCB *sccb);
@@ -205,7 +205,7 @@ typedef struct SCLPDeviceClass {
     /* public */
     void (*execute)(SCLPDevice *sclp, SCCB *sccb, uint32_t code);
     void (*service_interrupt)(SCLPDevice *sclp, uint32_t sccb);
-} SCLPDeviceClass;
+};
 
 static inline int sccb_data_len(SCCB *sccb)
 {
diff --git a/include/hw/s390x/storage-attributes.h b/include/hw/s390x/storage-attributes.h
index 4f7c6c0877..efb28c48be 100644
--- a/include/hw/s390x/storage-attributes.h
+++ b/include/hw/s390x/storage-attributes.h
@@ -14,26 +14,25 @@
 
 #include "hw/qdev-core.h"
 #include "monitor/monitor.h"
+#include "qom/object.h"
 
 #define TYPE_S390_STATTRIB "s390-storage_attributes"
 #define TYPE_QEMU_S390_STATTRIB "s390-storage_attributes-qemu"
 #define TYPE_KVM_S390_STATTRIB "s390-storage_attributes-kvm"
 
-#define S390_STATTRIB(obj) \
-    OBJECT_CHECK(S390StAttribState, (obj), TYPE_S390_STATTRIB)
+typedef struct S390StAttribClass S390StAttribClass;
+typedef struct S390StAttribState S390StAttribState;
+DECLARE_OBJ_CHECKERS(S390StAttribState, S390StAttribClass,
+                     S390_STATTRIB, TYPE_S390_STATTRIB)
 
-typedef struct S390StAttribState {
+struct S390StAttribState {
     DeviceState parent_obj;
     uint64_t migration_cur_gfn;
     bool migration_enabled;
-} S390StAttribState;
+};
 
-#define S390_STATTRIB_CLASS(klass) \
-    OBJECT_CLASS_CHECK(S390StAttribClass, (klass), TYPE_S390_STATTRIB)
-#define S390_STATTRIB_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(S390StAttribClass, (obj), TYPE_S390_STATTRIB)
 
-typedef struct S390StAttribClass {
+struct S390StAttribClass {
     DeviceClass parent_class;
     /* Return value: < 0 on error, or new count */
     int (*get_stattr)(S390StAttribState *sa, uint64_t *start_gfn,
@@ -46,23 +45,25 @@ typedef struct S390StAttribClass {
     int (*set_migrationmode)(S390StAttribState *sa, bool value);
     int (*get_active)(S390StAttribState *sa);
     long long (*get_dirtycount)(S390StAttribState *sa);
-} S390StAttribClass;
+};
 
-#define QEMU_S390_STATTRIB(obj) \
-    OBJECT_CHECK(QEMUS390StAttribState, (obj), TYPE_QEMU_S390_STATTRIB)
+typedef struct QEMUS390StAttribState QEMUS390StAttribState;
+DECLARE_INSTANCE_CHECKER(QEMUS390StAttribState, QEMU_S390_STATTRIB,
+                         TYPE_QEMU_S390_STATTRIB)
 
-typedef struct QEMUS390StAttribState {
+struct QEMUS390StAttribState {
     S390StAttribState parent_obj;
-} QEMUS390StAttribState;
+};
 
-#define KVM_S390_STATTRIB(obj) \
-    OBJECT_CHECK(KVMS390StAttribState, (obj), TYPE_KVM_S390_STATTRIB)
+typedef struct KVMS390StAttribState KVMS390StAttribState;
+DECLARE_INSTANCE_CHECKER(KVMS390StAttribState, KVM_S390_STATTRIB,
+                         TYPE_KVM_S390_STATTRIB)
 
-typedef struct KVMS390StAttribState {
+struct KVMS390StAttribState {
     S390StAttribState parent_obj;
     uint64_t still_dirty;
     uint8_t *incoming_buffer;
-} KVMS390StAttribState;
+};
 
 void s390_stattrib_init(void);
 
diff --git a/include/hw/s390x/storage-keys.h b/include/hw/s390x/storage-keys.h
index 3f1ae7e778..40f042f54e 100644
--- a/include/hw/s390x/storage-keys.h
+++ b/include/hw/s390x/storage-keys.h
@@ -14,41 +14,41 @@
 
 #include "hw/qdev-core.h"
 #include "monitor/monitor.h"
+#include "qom/object.h"
 
 #define TYPE_S390_SKEYS "s390-skeys"
-#define S390_SKEYS(obj) \
-    OBJECT_CHECK(S390SKeysState, (obj), TYPE_S390_SKEYS)
+typedef struct S390SKeysClass S390SKeysClass;
+typedef struct S390SKeysState S390SKeysState;
+DECLARE_OBJ_CHECKERS(S390SKeysState, S390SKeysClass,
+                     S390_SKEYS, TYPE_S390_SKEYS)
 
-typedef struct S390SKeysState {
+struct S390SKeysState {
     DeviceState parent_obj;
     bool migration_enabled;
 
-} S390SKeysState;
+};
 
-#define S390_SKEYS_CLASS(klass) \
-    OBJECT_CLASS_CHECK(S390SKeysClass, (klass), TYPE_S390_SKEYS)
-#define S390_SKEYS_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(S390SKeysClass, (obj), TYPE_S390_SKEYS)
 
-typedef struct S390SKeysClass {
+struct S390SKeysClass {
     DeviceClass parent_class;
     int (*skeys_enabled)(S390SKeysState *ks);
     int (*get_skeys)(S390SKeysState *ks, uint64_t start_gfn, uint64_t count,
                      uint8_t *keys);
     int (*set_skeys)(S390SKeysState *ks, uint64_t start_gfn, uint64_t count,
                      uint8_t *keys);
-} S390SKeysClass;
+};
 
 #define TYPE_KVM_S390_SKEYS "s390-skeys-kvm"
 #define TYPE_QEMU_S390_SKEYS "s390-skeys-qemu"
-#define QEMU_S390_SKEYS(obj) \
-    OBJECT_CHECK(QEMUS390SKeysState, (obj), TYPE_QEMU_S390_SKEYS)
+typedef struct QEMUS390SKeysState QEMUS390SKeysState;
+DECLARE_INSTANCE_CHECKER(QEMUS390SKeysState, QEMU_S390_SKEYS,
+                         TYPE_QEMU_S390_SKEYS)
 
-typedef struct QEMUS390SKeysState {
+struct QEMUS390SKeysState {
     S390SKeysState parent_obj;
     uint8_t *keydata;
     uint32_t key_count;
-} QEMUS390SKeysState;
+};
 
 void s390_skeys_init(void);
 
diff --git a/include/hw/s390x/tod.h b/include/hw/s390x/tod.h
index 4251623f7f..c02498f65e 100644
--- a/include/hw/s390x/tod.h
+++ b/include/hw/s390x/tod.h
@@ -13,6 +13,7 @@
 
 #include "hw/qdev-core.h"
 #include "target/s390x/s390-tod.h"
+#include "qom/object.h"
 
 typedef struct S390TOD {
     uint8_t high;
@@ -20,15 +21,14 @@ typedef struct S390TOD {
 } S390TOD;
 
 #define TYPE_S390_TOD "s390-tod"
-#define S390_TOD(obj) OBJECT_CHECK(S390TODState, (obj), TYPE_S390_TOD)
-#define S390_TOD_CLASS(oc) OBJECT_CLASS_CHECK(S390TODClass, (oc), \
-                                              TYPE_S390_TOD)
-#define S390_TOD_GET_CLASS(obj) OBJECT_GET_CLASS(S390TODClass, (obj), \
-                                                 TYPE_S390_TOD)
+typedef struct S390TODClass S390TODClass;
+typedef struct S390TODState S390TODState;
+DECLARE_OBJ_CHECKERS(S390TODState, S390TODClass,
+                     S390_TOD, TYPE_S390_TOD)
 #define TYPE_KVM_S390_TOD TYPE_S390_TOD "-kvm"
 #define TYPE_QEMU_S390_TOD TYPE_S390_TOD "-qemu"
 
-typedef struct S390TODState {
+struct S390TODState {
     /* private */
     DeviceState parent_obj;
 
@@ -39,9 +39,9 @@ typedef struct S390TODState {
     S390TOD base;
     /* Used by KVM to remember if the TOD is stopped and base is valid. */
     bool stopped;
-} S390TODState;
+};
 
-typedef struct S390TODClass {
+struct S390TODClass {
     /* private */
     DeviceClass parent_class;
     void (*parent_realize)(DeviceState *dev, Error **errp);
@@ -49,7 +49,7 @@ typedef struct S390TODClass {
     /* public */
     void (*get)(const S390TODState *td, S390TOD *tod, Error **errp);
     void (*set)(S390TODState *td, const S390TOD *tod, Error **errp);
-} S390TODClass;
+};
 
 void s390_init_tod(void);
 S390TODState *s390_get_todstate(void);
diff --git a/include/hw/s390x/vfio-ccw.h b/include/hw/s390x/vfio-ccw.h
index ee5250d0d7..9c9c8944ad 100644
--- a/include/hw/s390x/vfio-ccw.h
+++ b/include/hw/s390x/vfio-ccw.h
@@ -17,12 +17,13 @@
 #include "hw/vfio/vfio-common.h"
 #include "hw/s390x/s390-ccw.h"
 #include "hw/s390x/ccw-device.h"
+#include "qom/object.h"
 
 #define TYPE_VFIO_CCW "vfio-ccw"
-#define VFIO_CCW(obj) \
-        OBJECT_CHECK(VFIOCCWDevice, (obj), TYPE_VFIO_CCW)
+typedef struct VFIOCCWDevice VFIOCCWDevice;
+DECLARE_INSTANCE_CHECKER(VFIOCCWDevice, VFIO_CCW,
+                         TYPE_VFIO_CCW)
 
 #define TYPE_VFIO_CCW "vfio-ccw"
-typedef struct VFIOCCWDevice VFIOCCWDevice;
 
 #endif
diff --git a/include/hw/scsi/esp.h b/include/hw/scsi/esp.h
index 6ba47dac41..20800dbf5b 100644
--- a/include/hw/scsi/esp.h
+++ b/include/hw/scsi/esp.h
@@ -3,6 +3,7 @@
 
 #include "hw/scsi/scsi.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 /* esp.c */
 #define ESP_MAX_DEVS 7
@@ -65,9 +66,11 @@ struct ESPState {
 };
 
 #define TYPE_ESP "esp"
-#define ESP_STATE(obj) OBJECT_CHECK(SysBusESPState, (obj), TYPE_ESP)
+typedef struct SysBusESPState SysBusESPState;
+DECLARE_INSTANCE_CHECKER(SysBusESPState, ESP,
+                         TYPE_ESP)
 
-typedef struct {
+struct SysBusESPState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -76,7 +79,7 @@ typedef struct {
     MemoryRegion pdma;
     uint32_t it_shift;
     ESPState esp;
-} SysBusESPState;
+};
 
 #define ESP_TCLO   0x0
 #define ESP_TCMID  0x1
diff --git a/include/hw/scsi/scsi.h b/include/hw/scsi/scsi.h
index 2fc23e44ba..3818e3fa46 100644
--- a/include/hw/scsi/scsi.h
+++ b/include/hw/scsi/scsi.h
@@ -6,6 +6,7 @@
 #include "hw/qdev-core.h"
 #include "scsi/utils.h"
 #include "qemu/notify.h"
+#include "qom/object.h"
 
 #define MAX_SCSI_DEVS	255
 
@@ -49,14 +50,11 @@ struct SCSIRequest {
 };
 
 #define TYPE_SCSI_DEVICE "scsi-device"
-#define SCSI_DEVICE(obj) \
-     OBJECT_CHECK(SCSIDevice, (obj), TYPE_SCSI_DEVICE)
-#define SCSI_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(SCSIDeviceClass, (klass), TYPE_SCSI_DEVICE)
-#define SCSI_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SCSIDeviceClass, (obj), TYPE_SCSI_DEVICE)
-
-typedef struct SCSIDeviceClass {
+typedef struct SCSIDeviceClass SCSIDeviceClass;
+DECLARE_OBJ_CHECKERS(SCSIDevice, SCSIDeviceClass,
+                     SCSI_DEVICE, TYPE_SCSI_DEVICE)
+
+struct SCSIDeviceClass {
     DeviceClass parent_class;
     void (*realize)(SCSIDevice *dev, Error **errp);
     void (*unrealize)(SCSIDevice *dev);
@@ -65,7 +63,7 @@ typedef struct SCSIDeviceClass {
     SCSIRequest *(*alloc_req)(SCSIDevice *s, uint32_t tag, uint32_t lun,
                               uint8_t *buf, void *hba_private);
     void (*unit_attention_reported)(SCSIDevice *s);
-} SCSIDeviceClass;
+};
 
 struct SCSIDevice
 {
@@ -136,7 +134,8 @@ struct SCSIBusInfo {
 };
 
 #define TYPE_SCSI_BUS "SCSI"
-#define SCSI_BUS(obj) OBJECT_CHECK(SCSIBus, (obj), TYPE_SCSI_BUS)
+DECLARE_INSTANCE_CHECKER(SCSIBus, SCSI_BUS,
+                         TYPE_SCSI_BUS)
 
 struct SCSIBus {
     BusState qbus;
diff --git a/include/hw/sd/allwinner-sdhost.h b/include/hw/sd/allwinner-sdhost.h
index 839732ebf3..7bccc06d1c 100644
--- a/include/hw/sd/allwinner-sdhost.h
+++ b/include/hw/sd/allwinner-sdhost.h
@@ -45,19 +45,17 @@
  * @{
  */
 
-#define AW_SDHOST(obj) \
-    OBJECT_CHECK(AwSdHostState, (obj), TYPE_AW_SDHOST)
-#define AW_SDHOST_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AwSdHostClass, (klass), TYPE_AW_SDHOST)
-#define AW_SDHOST_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AwSdHostClass, (obj), TYPE_AW_SDHOST)
+typedef struct AwSdHostClass AwSdHostClass;
+typedef struct AwSdHostState AwSdHostState;
+DECLARE_OBJ_CHECKERS(AwSdHostState, AwSdHostClass,
+                     AW_SDHOST, TYPE_AW_SDHOST)
 
 /** @} */
 
 /**
  * Allwinner SD Host Controller object instance state.
  */
-typedef struct AwSdHostState {
+struct AwSdHostState {
     /*< private >*/
     SysBusDevice busdev;
     /*< public >*/
@@ -119,7 +117,7 @@ typedef struct AwSdHostState {
 
     /** @} */
 
-} AwSdHostState;
+};
 
 /**
  * Allwinner SD Host Controller class-level struct.
@@ -128,7 +126,7 @@ typedef struct AwSdHostState {
  * such that the generic code can use this struct to support
  * all devices.
  */
-typedef struct AwSdHostClass {
+struct AwSdHostClass {
     /*< private >*/
     SysBusDeviceClass parent_class;
     /*< public >*/
@@ -136,6 +134,6 @@ typedef struct AwSdHostClass {
     /** Maximum buffer size in bytes per DMA descriptor */
     size_t max_desc_size;
 
-} AwSdHostClass;
+};
 
 #endif /* HW_SD_ALLWINNER_SDHOST_H */
diff --git a/include/hw/sd/aspeed_sdhci.h b/include/hw/sd/aspeed_sdhci.h
index dffbb46946..783ccc2956 100644
--- a/include/hw/sd/aspeed_sdhci.h
+++ b/include/hw/sd/aspeed_sdhci.h
@@ -10,17 +10,19 @@
 #define ASPEED_SDHCI_H
 
 #include "hw/sd/sdhci.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_SDHCI "aspeed.sdhci"
-#define ASPEED_SDHCI(obj) OBJECT_CHECK(AspeedSDHCIState, (obj), \
-                                       TYPE_ASPEED_SDHCI)
+typedef struct AspeedSDHCIState AspeedSDHCIState;
+DECLARE_INSTANCE_CHECKER(AspeedSDHCIState, ASPEED_SDHCI,
+                         TYPE_ASPEED_SDHCI)
 
 #define ASPEED_SDHCI_CAPABILITIES 0x01E80080
 #define ASPEED_SDHCI_NUM_SLOTS    2
 #define ASPEED_SDHCI_NUM_REGS     (ASPEED_SDHCI_REG_SIZE / sizeof(uint32_t))
 #define ASPEED_SDHCI_REG_SIZE     0x100
 
-typedef struct AspeedSDHCIState {
+struct AspeedSDHCIState {
     SysBusDevice parent;
 
     SDHCIState slots[ASPEED_SDHCI_NUM_SLOTS];
@@ -30,6 +32,6 @@ typedef struct AspeedSDHCIState {
     qemu_irq irq;
 
     uint32_t regs[ASPEED_SDHCI_NUM_REGS];
-} AspeedSDHCIState;
+};
 
 #endif /* ASPEED_SDHCI_H */
diff --git a/include/hw/sd/bcm2835_sdhost.h b/include/hw/sd/bcm2835_sdhost.h
index 7520dd6507..751ba531d6 100644
--- a/include/hw/sd/bcm2835_sdhost.h
+++ b/include/hw/sd/bcm2835_sdhost.h
@@ -16,14 +16,16 @@
 
 #include "hw/sysbus.h"
 #include "hw/sd/sd.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_SDHOST "bcm2835-sdhost"
-#define BCM2835_SDHOST(obj) \
-        OBJECT_CHECK(BCM2835SDHostState, (obj), TYPE_BCM2835_SDHOST)
+typedef struct BCM2835SDHostState BCM2835SDHostState;
+DECLARE_INSTANCE_CHECKER(BCM2835SDHostState, BCM2835_SDHOST,
+                         TYPE_BCM2835_SDHOST)
 
 #define BCM2835_SDHOST_FIFO_LEN 16
 
-typedef struct {
+struct BCM2835SDHostState {
     SysBusDevice busdev;
     SDBus sdbus;
     MemoryRegion iomem;
@@ -43,6 +45,6 @@ typedef struct {
     uint32_t datacnt;
 
     qemu_irq irq;
-} BCM2835SDHostState;
+};
 
 #endif
diff --git a/include/hw/sd/sd.h b/include/hw/sd/sd.h
index ac02d61a7a..54f97a07cd 100644
--- a/include/hw/sd/sd.h
+++ b/include/hw/sd/sd.h
@@ -31,6 +31,7 @@
 #define HW_SD_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define OUT_OF_RANGE		(1 << 31)
 #define ADDRESS_ERROR		(1 << 30)
@@ -89,16 +90,13 @@ typedef struct {
 } SDRequest;
 
 typedef struct SDState SDState;
-typedef struct SDBus SDBus;
 
 #define TYPE_SD_CARD "sd-card"
-#define SD_CARD(obj) OBJECT_CHECK(SDState, (obj), TYPE_SD_CARD)
-#define SD_CARD_CLASS(klass) \
-    OBJECT_CLASS_CHECK(SDCardClass, (klass), TYPE_SD_CARD)
-#define SD_CARD_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(SDCardClass, (obj), TYPE_SD_CARD)
+typedef struct SDCardClass SDCardClass;
+DECLARE_OBJ_CHECKERS(SDState, SDCardClass,
+                     SD_CARD, TYPE_SD_CARD)
 
-typedef struct {
+struct SDCardClass {
     /*< private >*/
     DeviceClass parent_class;
     /*< public >*/
@@ -128,18 +126,17 @@ typedef struct {
     void (*enable)(SDState *sd, bool enable);
     bool (*get_inserted)(SDState *sd);
     bool (*get_readonly)(SDState *sd);
-} SDCardClass;
+};
 
 #define TYPE_SD_BUS "sd-bus"
-#define SD_BUS(obj) OBJECT_CHECK(SDBus, (obj), TYPE_SD_BUS)
-#define SD_BUS_CLASS(klass) OBJECT_CLASS_CHECK(SDBusClass, (klass), TYPE_SD_BUS)
-#define SD_BUS_GET_CLASS(obj) OBJECT_GET_CLASS(SDBusClass, (obj), TYPE_SD_BUS)
+OBJECT_DECLARE_TYPE(SDBus, SDBusClass,
+                    sd_bus, SD_BUS)
 
 struct SDBus {
     BusState qbus;
 };
 
-typedef struct {
+struct SDBusClass {
     /*< private >*/
     BusClass parent_class;
     /*< public >*/
@@ -149,7 +146,7 @@ typedef struct {
      */
     void (*set_inserted)(DeviceState *dev, bool inserted);
     void (*set_readonly)(DeviceState *dev, bool readonly);
-} SDBusClass;
+};
 
 /* Functions to be used by qdevified callers (working via
  * an SDBus rather than directly with SDState)
diff --git a/include/hw/sd/sdhci.h b/include/hw/sd/sdhci.h
index 5d9275f3d6..01a64c5442 100644
--- a/include/hw/sd/sdhci.h
+++ b/include/hw/sd/sdhci.h
@@ -28,9 +28,10 @@
 #include "hw/pci/pci.h"
 #include "hw/sysbus.h"
 #include "hw/sd/sd.h"
+#include "qom/object.h"
 
 /* SD/MMC host controller state */
-typedef struct SDHCIState {
+struct SDHCIState {
     /*< private >*/
     union {
         PCIDevice pcidev;
@@ -98,7 +99,8 @@ typedef struct SDHCIState {
     uint8_t sd_spec_version;
     uint8_t uhs_mode;
     uint8_t vendor;        /* For vendor specific functionality */
-} SDHCIState;
+};
+typedef struct SDHCIState SDHCIState;
 
 #define SDHCI_VENDOR_NONE       0
 #define SDHCI_VENDOR_IMX        1
@@ -113,11 +115,12 @@ typedef struct SDHCIState {
 #define SDHCI_QUIRK_NO_BUSY_IRQ    BIT(14)
 
 #define TYPE_PCI_SDHCI "sdhci-pci"
-#define PCI_SDHCI(obj) OBJECT_CHECK(SDHCIState, (obj), TYPE_PCI_SDHCI)
+DECLARE_INSTANCE_CHECKER(SDHCIState, PCI_SDHCI,
+                         TYPE_PCI_SDHCI)
 
 #define TYPE_SYSBUS_SDHCI "generic-sdhci"
-#define SYSBUS_SDHCI(obj)                               \
-     OBJECT_CHECK(SDHCIState, (obj), TYPE_SYSBUS_SDHCI)
+DECLARE_INSTANCE_CHECKER(SDHCIState, SYSBUS_SDHCI,
+                         TYPE_SYSBUS_SDHCI)
 
 #define TYPE_IMX_USDHC "imx-usdhc"
 
diff --git a/include/hw/southbridge/piix.h b/include/hw/southbridge/piix.h
index ac1d04ddc2..6387f2b612 100644
--- a/include/hw/southbridge/piix.h
+++ b/include/hw/southbridge/piix.h
@@ -13,6 +13,7 @@
 #define HW_SOUTHBRIDGE_PIIX_H
 
 #include "hw/pci/pci.h"
+#include "qom/object.h"
 
 #define TYPE_PIIX4_PM "PIIX4_PM"
 
@@ -35,7 +36,7 @@ I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
 #define PIIX_NUM_PIC_IRQS       16      /* i8259 * 2 */
 #define PIIX_NUM_PIRQS          4ULL    /* PIRQ[A-D] */
 
-typedef struct PIIXState {
+struct PIIXState {
     PCIDevice dev;
 
     /*
@@ -62,11 +63,12 @@ typedef struct PIIXState {
 
     /* IO memory region for Reset Control Register (PIIX_RCR_IOPORT) */
     MemoryRegion rcr_mem;
-} PIIX3State;
+};
+typedef struct PIIXState PIIX3State;
 
 #define TYPE_PIIX3_PCI_DEVICE "pci-piix3"
-#define PIIX3_PCI_DEVICE(obj) \
-    OBJECT_CHECK(PIIX3State, (obj), TYPE_PIIX3_PCI_DEVICE)
+DECLARE_INSTANCE_CHECKER(PIIX3State, PIIX3_PCI_DEVICE,
+                         TYPE_PIIX3_PCI_DEVICE)
 
 extern PCIDevice *piix4_dev;
 
diff --git a/include/hw/sparc/sparc32_dma.h b/include/hw/sparc/sparc32_dma.h
index ab42c5421b..a402665a9c 100644
--- a/include/hw/sparc/sparc32_dma.h
+++ b/include/hw/sparc/sparc32_dma.h
@@ -4,14 +4,15 @@
 #include "hw/sysbus.h"
 #include "hw/scsi/esp.h"
 #include "hw/net/lance.h"
+#include "qom/object.h"
 
 #define DMA_REGS 4
 
 #define TYPE_SPARC32_DMA_DEVICE "sparc32-dma-device"
-#define SPARC32_DMA_DEVICE(obj) OBJECT_CHECK(DMADeviceState, (obj), \
-                                             TYPE_SPARC32_DMA_DEVICE)
-
 typedef struct DMADeviceState DMADeviceState;
+DECLARE_INSTANCE_CHECKER(DMADeviceState, SPARC32_DMA_DEVICE,
+                         TYPE_SPARC32_DMA_DEVICE)
+
 
 struct DMADeviceState {
     SysBusDevice parent_obj;
@@ -24,37 +25,40 @@ struct DMADeviceState {
 };
 
 #define TYPE_SPARC32_ESPDMA_DEVICE "sparc32-espdma"
-#define SPARC32_ESPDMA_DEVICE(obj) OBJECT_CHECK(ESPDMADeviceState, (obj), \
-                                                TYPE_SPARC32_ESPDMA_DEVICE)
+typedef struct ESPDMADeviceState ESPDMADeviceState;
+DECLARE_INSTANCE_CHECKER(ESPDMADeviceState, SPARC32_ESPDMA_DEVICE,
+                         TYPE_SPARC32_ESPDMA_DEVICE)
 
-typedef struct ESPDMADeviceState {
+struct ESPDMADeviceState {
     DMADeviceState parent_obj;
 
     SysBusESPState *esp;
-} ESPDMADeviceState;
+};
 
 #define TYPE_SPARC32_LEDMA_DEVICE "sparc32-ledma"
-#define SPARC32_LEDMA_DEVICE(obj) OBJECT_CHECK(LEDMADeviceState, (obj), \
-                                               TYPE_SPARC32_LEDMA_DEVICE)
+typedef struct LEDMADeviceState LEDMADeviceState;
+DECLARE_INSTANCE_CHECKER(LEDMADeviceState, SPARC32_LEDMA_DEVICE,
+                         TYPE_SPARC32_LEDMA_DEVICE)
 
-typedef struct LEDMADeviceState {
+struct LEDMADeviceState {
     DMADeviceState parent_obj;
 
     SysBusPCNetState *lance;
-} LEDMADeviceState;
+};
 
 #define TYPE_SPARC32_DMA "sparc32-dma"
-#define SPARC32_DMA(obj) OBJECT_CHECK(SPARC32DMAState, (obj), \
-                                      TYPE_SPARC32_DMA)
+typedef struct SPARC32DMAState SPARC32DMAState;
+DECLARE_INSTANCE_CHECKER(SPARC32DMAState, SPARC32_DMA,
+                         TYPE_SPARC32_DMA)
 
-typedef struct SPARC32DMAState {
+struct SPARC32DMAState {
     SysBusDevice parent_obj;
 
     MemoryRegion dmamem;
     MemoryRegion ledma_alias;
     ESPDMADeviceState *espdma;
     LEDMADeviceState *ledma;
-} SPARC32DMAState;
+};
 
 /* sparc32_dma.c */
 void ledma_memory_read(void *opaque, hwaddr addr,
diff --git a/include/hw/sparc/sun4m_iommu.h b/include/hw/sparc/sun4m_iommu.h
index 482266c6a7..4e2ab34cde 100644
--- a/include/hw/sparc/sun4m_iommu.h
+++ b/include/hw/sparc/sun4m_iommu.h
@@ -26,10 +26,11 @@
 #define SUN4M_IOMMU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define IOMMU_NREGS         (4 * 4096 / 4)
 
-typedef struct IOMMUState {
+struct IOMMUState {
     SysBusDevice parent_obj;
 
     AddressSpace iommu_as;
@@ -40,10 +41,12 @@ typedef struct IOMMUState {
     hwaddr iostart;
     qemu_irq irq;
     uint32_t version;
-} IOMMUState;
+};
+typedef struct IOMMUState IOMMUState;
 
 #define TYPE_SUN4M_IOMMU "sun4m-iommu"
-#define SUN4M_IOMMU(obj) OBJECT_CHECK(IOMMUState, (obj), TYPE_SUN4M_IOMMU)
+DECLARE_INSTANCE_CHECKER(IOMMUState, SUN4M_IOMMU,
+                         TYPE_SUN4M_IOMMU)
 
 #define TYPE_SUN4M_IOMMU_MEMORY_REGION "sun4m-iommu-memory-region"
 
diff --git a/include/hw/sparc/sun4u_iommu.h b/include/hw/sparc/sun4u_iommu.h
index 5472d489cf..f94566a72c 100644
--- a/include/hw/sparc/sun4u_iommu.h
+++ b/include/hw/sparc/sun4u_iommu.h
@@ -28,10 +28,11 @@
 #define SUN4U_IOMMU_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define IOMMU_NREGS             3
 
-typedef struct IOMMUState {
+struct IOMMUState {
     SysBusDevice parent_obj;
 
     AddressSpace iommu_as;
@@ -39,10 +40,12 @@ typedef struct IOMMUState {
 
     MemoryRegion iomem;
     uint64_t regs[IOMMU_NREGS];
-} IOMMUState;
+};
+typedef struct IOMMUState IOMMUState;
 
 #define TYPE_SUN4U_IOMMU "sun4u-iommu"
-#define SUN4U_IOMMU(obj) OBJECT_CHECK(IOMMUState, (obj), TYPE_SUN4U_IOMMU)
+DECLARE_INSTANCE_CHECKER(IOMMUState, SUN4U_IOMMU,
+                         TYPE_SUN4U_IOMMU)
 
 #define TYPE_SUN4U_IOMMU_MEMORY_REGION "sun4u-iommu-memory-region"
 
diff --git a/include/hw/ssi/aspeed_smc.h b/include/hw/ssi/aspeed_smc.h
index 6fbbb238f1..8e023d8ff6 100644
--- a/include/hw/ssi/aspeed_smc.h
+++ b/include/hw/ssi/aspeed_smc.h
@@ -27,6 +27,7 @@
 
 #include "hw/ssi/ssi.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 typedef struct AspeedSegments {
     hwaddr addr;
@@ -67,20 +68,19 @@ typedef struct AspeedSMCFlash {
 } AspeedSMCFlash;
 
 #define TYPE_ASPEED_SMC "aspeed.smc"
-#define ASPEED_SMC(obj) OBJECT_CHECK(AspeedSMCState, (obj), TYPE_ASPEED_SMC)
-#define ASPEED_SMC_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedSMCClass, (klass), TYPE_ASPEED_SMC)
-#define ASPEED_SMC_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedSMCClass, (obj), TYPE_ASPEED_SMC)
+typedef struct AspeedSMCClass AspeedSMCClass;
+typedef struct AspeedSMCState AspeedSMCState;
+DECLARE_OBJ_CHECKERS(AspeedSMCState, AspeedSMCClass,
+                     ASPEED_SMC, TYPE_ASPEED_SMC)
 
-typedef struct  AspeedSMCClass {
+struct AspeedSMCClass {
     SysBusDevice parent_obj;
     const AspeedSMCController *ctrl;
-}  AspeedSMCClass;
+};
 
 #define ASPEED_SMC_R_MAX        (0x100 / 4)
 
-typedef struct AspeedSMCState {
+struct AspeedSMCState {
     SysBusDevice parent_obj;
 
     const AspeedSMCController *ctrl;
@@ -117,6 +117,6 @@ typedef struct AspeedSMCState {
 
     uint8_t snoop_index;
     uint8_t snoop_dummies;
-} AspeedSMCState;
+};
 
 #endif /* ASPEED_SMC_H */
diff --git a/include/hw/ssi/imx_spi.h b/include/hw/ssi/imx_spi.h
index 7103953581..874fea492d 100644
--- a/include/hw/ssi/imx_spi.h
+++ b/include/hw/ssi/imx_spi.h
@@ -14,6 +14,7 @@
 #include "hw/ssi/ssi.h"
 #include "qemu/bitops.h"
 #include "qemu/fifo32.h"
+#include "qom/object.h"
 
 #define ECSPI_FIFO_SIZE 64
 
@@ -77,9 +78,11 @@
 #define EXTRACT(value, name) extract32(value, name##_SHIFT, name##_LENGTH)
 
 #define TYPE_IMX_SPI "imx.spi"
-#define IMX_SPI(obj) OBJECT_CHECK(IMXSPIState, (obj), TYPE_IMX_SPI)
+typedef struct IMXSPIState IMXSPIState;
+DECLARE_INSTANCE_CHECKER(IMXSPIState, IMX_SPI,
+                         TYPE_IMX_SPI)
 
-typedef struct IMXSPIState {
+struct IMXSPIState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -98,6 +101,6 @@ typedef struct IMXSPIState {
     Fifo32 tx_fifo;
 
     int16_t burst_length;
-} IMXSPIState;
+};
 
 #endif /* IMX_SPI_H */
diff --git a/include/hw/ssi/mss-spi.h b/include/hw/ssi/mss-spi.h
index f0cf3243e0..7c16cf6b49 100644
--- a/include/hw/ssi/mss-spi.h
+++ b/include/hw/ssi/mss-spi.h
@@ -28,13 +28,16 @@
 #include "hw/sysbus.h"
 #include "hw/ssi/ssi.h"
 #include "qemu/fifo32.h"
+#include "qom/object.h"
 
 #define TYPE_MSS_SPI   "mss-spi"
-#define MSS_SPI(obj)   OBJECT_CHECK(MSSSpiState, (obj), TYPE_MSS_SPI)
+typedef struct MSSSpiState MSSSpiState;
+DECLARE_INSTANCE_CHECKER(MSSSpiState, MSS_SPI,
+                         TYPE_MSS_SPI)
 
 #define R_SPI_MAX             16
 
-typedef struct MSSSpiState {
+struct MSSSpiState {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
@@ -53,6 +56,6 @@ typedef struct MSSSpiState {
     bool enabled;
 
     uint32_t regs[R_SPI_MAX];
-} MSSSpiState;
+};
 
 #endif /* HW_MSS_SPI_H */
diff --git a/include/hw/ssi/pl022.h b/include/hw/ssi/pl022.h
index a080519366..1f5da7cc44 100644
--- a/include/hw/ssi/pl022.h
+++ b/include/hw/ssi/pl022.h
@@ -22,11 +22,14 @@
 #define HW_SSI_PL022_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_PL022 "pl022"
-#define PL022(obj) OBJECT_CHECK(PL022State, (obj), TYPE_PL022)
+typedef struct PL022State PL022State;
+DECLARE_INSTANCE_CHECKER(PL022State, PL022,
+                         TYPE_PL022)
 
-typedef struct PL022State {
+struct PL022State {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -46,6 +49,6 @@ typedef struct PL022State {
     uint16_t rx_fifo[8];
     qemu_irq irq;
     SSIBus *ssi;
-} PL022State;
+};
 
 #endif
diff --git a/include/hw/ssi/ssi.h b/include/hw/ssi/ssi.h
index eac168aa1d..4fe1d85136 100644
--- a/include/hw/ssi/ssi.h
+++ b/include/hw/ssi/ssi.h
@@ -12,18 +12,13 @@
 #define QEMU_SSI_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
-typedef struct SSISlave SSISlave;
-typedef struct SSISlaveClass SSISlaveClass;
 typedef enum SSICSMode SSICSMode;
 
 #define TYPE_SSI_SLAVE "ssi-slave"
-#define SSI_SLAVE(obj) \
-     OBJECT_CHECK(SSISlave, (obj), TYPE_SSI_SLAVE)
-#define SSI_SLAVE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(SSISlaveClass, (klass), TYPE_SSI_SLAVE)
-#define SSI_SLAVE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SSISlaveClass, (obj), TYPE_SSI_SLAVE)
+OBJECT_DECLARE_TYPE(SSISlave, SSISlaveClass,
+                    ssi_slave, SSI_SLAVE)
 
 #define SSI_GPIO_CS "ssi-gpio-cs"
 
diff --git a/include/hw/ssi/stm32f2xx_spi.h b/include/hw/ssi/stm32f2xx_spi.h
index e24b007abf..4bb36d04ed 100644
--- a/include/hw/ssi/stm32f2xx_spi.h
+++ b/include/hw/ssi/stm32f2xx_spi.h
@@ -27,6 +27,7 @@
 
 #include "hw/sysbus.h"
 #include "hw/ssi/ssi.h"
+#include "qom/object.h"
 
 #define STM_SPI_CR1     0x00
 #define STM_SPI_CR2     0x04
@@ -44,10 +45,11 @@
 #define STM_SPI_SR_RXNE   1
 
 #define TYPE_STM32F2XX_SPI "stm32f2xx-spi"
-#define STM32F2XX_SPI(obj) \
-    OBJECT_CHECK(STM32F2XXSPIState, (obj), TYPE_STM32F2XX_SPI)
+typedef struct STM32F2XXSPIState STM32F2XXSPIState;
+DECLARE_INSTANCE_CHECKER(STM32F2XXSPIState, STM32F2XX_SPI,
+                         TYPE_STM32F2XX_SPI)
 
-typedef struct {
+struct STM32F2XXSPIState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -66,6 +68,6 @@ typedef struct {
 
     qemu_irq irq;
     SSIBus *ssi;
-} STM32F2XXSPIState;
+};
 
 #endif /* HW_STM32F2XX_SPI_H */
diff --git a/include/hw/ssi/xilinx_spips.h b/include/hw/ssi/xilinx_spips.h
index 6a39b55a7b..b1ab347617 100644
--- a/include/hw/ssi/xilinx_spips.h
+++ b/include/hw/ssi/xilinx_spips.h
@@ -29,6 +29,7 @@
 #include "qemu/fifo32.h"
 #include "hw/stream.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 typedef struct XilinxSPIPS XilinxSPIPS;
 
@@ -85,16 +86,17 @@ struct XilinxSPIPS {
     bool man_start_com;
 };
 
-typedef struct {
+struct XilinxQSPIPS {
     XilinxSPIPS parent_obj;
 
     uint8_t lqspi_buf[LQSPI_CACHE_SIZE];
     hwaddr lqspi_cached_addr;
     Error *migration_blocker;
     bool mmio_execution_enabled;
-} XilinxQSPIPS;
+};
+typedef struct XilinxQSPIPS XilinxQSPIPS;
 
-typedef struct {
+struct XlnxZynqMPQSPIPS {
     XilinxQSPIPS parent_obj;
 
     StreamSlave *dma;
@@ -117,32 +119,30 @@ typedef struct {
     bool man_start_com_g;
     uint32_t dma_burst_size;
     uint8_t dma_buf[QSPI_DMA_MAX_BURST_SIZE];
-} XlnxZynqMPQSPIPS;
+};
+typedef struct XlnxZynqMPQSPIPS XlnxZynqMPQSPIPS;
 
-typedef struct XilinxSPIPSClass {
+struct XilinxSPIPSClass {
     SysBusDeviceClass parent_class;
 
     const MemoryRegionOps *reg_ops;
 
     uint32_t rx_fifo_size;
     uint32_t tx_fifo_size;
-} XilinxSPIPSClass;
+};
+typedef struct XilinxSPIPSClass XilinxSPIPSClass;
 
 #define TYPE_XILINX_SPIPS "xlnx.ps7-spi"
 #define TYPE_XILINX_QSPIPS "xlnx.ps7-qspi"
 #define TYPE_XLNX_ZYNQMP_QSPIPS "xlnx.usmp-gqspi"
 
-#define XILINX_SPIPS(obj) \
-     OBJECT_CHECK(XilinxSPIPS, (obj), TYPE_XILINX_SPIPS)
-#define XILINX_SPIPS_CLASS(klass) \
-     OBJECT_CLASS_CHECK(XilinxSPIPSClass, (klass), TYPE_XILINX_SPIPS)
-#define XILINX_SPIPS_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(XilinxSPIPSClass, (obj), TYPE_XILINX_SPIPS)
+DECLARE_OBJ_CHECKERS(XilinxSPIPS, XilinxSPIPSClass,
+                     XILINX_SPIPS, TYPE_XILINX_SPIPS)
 
-#define XILINX_QSPIPS(obj) \
-     OBJECT_CHECK(XilinxQSPIPS, (obj), TYPE_XILINX_QSPIPS)
+DECLARE_INSTANCE_CHECKER(XilinxQSPIPS, XILINX_QSPIPS,
+                         TYPE_XILINX_QSPIPS)
 
-#define XLNX_ZYNQMP_QSPIPS(obj) \
-     OBJECT_CHECK(XlnxZynqMPQSPIPS, (obj), TYPE_XLNX_ZYNQMP_QSPIPS)
+DECLARE_INSTANCE_CHECKER(XlnxZynqMPQSPIPS, XLNX_ZYNQMP_QSPIPS,
+                         TYPE_XLNX_ZYNQMP_QSPIPS)
 
 #endif /* XILINX_SPIPS_H */
diff --git a/include/hw/stream.h b/include/hw/stream.h
index ed09e83683..e39d5a5b55 100644
--- a/include/hw/stream.h
+++ b/include/hw/stream.h
@@ -6,10 +6,9 @@
 /* stream slave. Used until qdev provides a generic way.  */
 #define TYPE_STREAM_SLAVE "stream-slave"
 
-#define STREAM_SLAVE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(StreamSlaveClass, (klass), TYPE_STREAM_SLAVE)
-#define STREAM_SLAVE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(StreamSlaveClass, (obj), TYPE_STREAM_SLAVE)
+typedef struct StreamSlaveClass StreamSlaveClass;
+DECLARE_CLASS_CHECKERS(StreamSlaveClass, STREAM_SLAVE,
+                       TYPE_STREAM_SLAVE)
 #define STREAM_SLAVE(obj) \
      INTERFACE_CHECK(StreamSlave, (obj), TYPE_STREAM_SLAVE)
 
@@ -17,7 +16,7 @@ typedef struct StreamSlave StreamSlave;
 
 typedef void (*StreamCanPushNotifyFn)(void *opaque);
 
-typedef struct StreamSlaveClass {
+struct StreamSlaveClass {
     InterfaceClass parent;
     /**
      * can push - determine if a stream slave is capable of accepting at least
@@ -42,7 +41,7 @@ typedef struct StreamSlaveClass {
      * @eop: End of packet flag
      */
     size_t (*push)(StreamSlave *obj, unsigned char *buf, size_t len, bool eop);
-} StreamSlaveClass;
+};
 
 size_t
 stream_push(StreamSlave *sink, uint8_t *buf, size_t len, bool eop);
diff --git a/include/hw/sysbus.h b/include/hw/sysbus.h
index da9f85c58c..28a9b0f634 100644
--- a/include/hw/sysbus.h
+++ b/include/hw/sysbus.h
@@ -5,22 +5,19 @@
 
 #include "hw/qdev-core.h"
 #include "exec/memory.h"
+#include "qom/object.h"
 
 #define QDEV_MAX_MMIO 32
 #define QDEV_MAX_PIO 32
 
 #define TYPE_SYSTEM_BUS "System"
-#define SYSTEM_BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_SYSTEM_BUS)
+DECLARE_INSTANCE_CHECKER(BusState, SYSTEM_BUS,
+                         TYPE_SYSTEM_BUS)
 
-typedef struct SysBusDevice SysBusDevice;
 
 #define TYPE_SYS_BUS_DEVICE "sys-bus-device"
-#define SYS_BUS_DEVICE(obj) \
-     OBJECT_CHECK(SysBusDevice, (obj), TYPE_SYS_BUS_DEVICE)
-#define SYS_BUS_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(SysBusDeviceClass, (klass), TYPE_SYS_BUS_DEVICE)
-#define SYS_BUS_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(SysBusDeviceClass, (obj), TYPE_SYS_BUS_DEVICE)
+OBJECT_DECLARE_TYPE(SysBusDevice, SysBusDeviceClass,
+                    sys_bus_device, SYS_BUS_DEVICE)
 
 /**
  * SysBusDeviceClass:
@@ -31,7 +28,7 @@ typedef struct SysBusDevice SysBusDevice;
 
 #define SYSBUS_DEVICE_GPIO_IRQ "sysbus-irq"
 
-typedef struct SysBusDeviceClass {
+struct SysBusDeviceClass {
     /*< private >*/
     DeviceClass parent_class;
 
@@ -52,7 +49,7 @@ typedef struct SysBusDeviceClass {
      */
     char *(*explicit_ofw_unit_address)(const SysBusDevice *dev);
     void (*connect_irq_notifier)(SysBusDevice *dev, qemu_irq irq);
-} SysBusDeviceClass;
+};
 
 struct SysBusDevice {
     /*< private >*/
diff --git a/include/hw/timer/a9gtimer.h b/include/hw/timer/a9gtimer.h
index 81c4388784..f6fcc4bfc6 100644
--- a/include/hw/timer/a9gtimer.h
+++ b/include/hw/timer/a9gtimer.h
@@ -24,11 +24,14 @@
 #define A9GTIMER_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define A9_GTIMER_MAX_CPUS 4
 
 #define TYPE_A9_GTIMER "arm.cortex-a9-global-timer"
-#define A9_GTIMER(obj) OBJECT_CHECK(A9GTimerState, (obj), TYPE_A9_GTIMER)
+typedef struct A9GTimerState A9GTimerState;
+DECLARE_INSTANCE_CHECKER(A9GTimerState, A9_GTIMER,
+                         TYPE_A9_GTIMER)
 
 #define R_COUNTER_LO                0x00
 #define R_COUNTER_HI                0x04
@@ -55,7 +58,6 @@
 #define R_AUTO_INCREMENT            0x18
 
 typedef struct A9GTimerPerCPU A9GTimerPerCPU;
-typedef struct A9GTimerState A9GTimerState;
 
 struct A9GTimerPerCPU {
     A9GTimerState *parent;
diff --git a/include/hw/timer/allwinner-a10-pit.h b/include/hw/timer/allwinner-a10-pit.h
index 871c95b512..9638e3c84c 100644
--- a/include/hw/timer/allwinner-a10-pit.h
+++ b/include/hw/timer/allwinner-a10-pit.h
@@ -3,9 +3,12 @@
 
 #include "hw/ptimer.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_AW_A10_PIT "allwinner-A10-timer"
-#define AW_A10_PIT(obj) OBJECT_CHECK(AwA10PITState, (obj), TYPE_AW_A10_PIT)
+typedef struct AwA10PITState AwA10PITState;
+DECLARE_INSTANCE_CHECKER(AwA10PITState, AW_A10_PIT,
+                         TYPE_AW_A10_PIT)
 
 #define AW_A10_PIT_TIMER_NR    6
 #define AW_A10_PIT_TIMER_IRQ   0x1
@@ -36,7 +39,6 @@
 
 #define AW_A10_PIT_DEFAULT_CLOCK   0x4
 
-typedef struct AwA10PITState AwA10PITState;
 
 typedef struct AwA10TimerContext {
     AwA10PITState *container;
diff --git a/include/hw/timer/arm_mptimer.h b/include/hw/timer/arm_mptimer.h
index c46d8d2309..47d5e51686 100644
--- a/include/hw/timer/arm_mptimer.h
+++ b/include/hw/timer/arm_mptimer.h
@@ -22,6 +22,7 @@
 #define HW_TIMER_ARM_MPTIMER_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define ARM_MPTIMER_MAX_CPUS 4
 
@@ -35,10 +36,11 @@ typedef struct {
 } TimerBlock;
 
 #define TYPE_ARM_MPTIMER "arm_mptimer"
-#define ARM_MPTIMER(obj) \
-    OBJECT_CHECK(ARMMPTimerState, (obj), TYPE_ARM_MPTIMER)
+typedef struct ARMMPTimerState ARMMPTimerState;
+DECLARE_INSTANCE_CHECKER(ARMMPTimerState, ARM_MPTIMER,
+                         TYPE_ARM_MPTIMER)
 
-typedef struct {
+struct ARMMPTimerState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -46,6 +48,6 @@ typedef struct {
     uint32_t num_cpu;
     TimerBlock timerblock[ARM_MPTIMER_MAX_CPUS];
     MemoryRegion iomem;
-} ARMMPTimerState;
+};
 
 #endif
diff --git a/include/hw/timer/armv7m_systick.h b/include/hw/timer/armv7m_systick.h
index 25e5ceacc8..b605688fee 100644
--- a/include/hw/timer/armv7m_systick.h
+++ b/include/hw/timer/armv7m_systick.h
@@ -13,12 +13,15 @@
 #define HW_TIMER_ARMV7M_SYSTICK_H
 
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_SYSTICK "armv7m_systick"
 
-#define SYSTICK(obj) OBJECT_CHECK(SysTickState, (obj), TYPE_SYSTICK)
+typedef struct SysTickState SysTickState;
+DECLARE_INSTANCE_CHECKER(SysTickState, SYSTICK,
+                         TYPE_SYSTICK)
 
-typedef struct SysTickState {
+struct SysTickState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -29,7 +32,7 @@ typedef struct SysTickState {
     QEMUTimer *timer;
     MemoryRegion iomem;
     qemu_irq irq;
-} SysTickState;
+};
 
 /*
  * Multiplication factor to convert from system clock ticks to qemu timer
diff --git a/include/hw/timer/aspeed_timer.h b/include/hw/timer/aspeed_timer.h
index d7c7d8ad28..4c76f955c9 100644
--- a/include/hw/timer/aspeed_timer.h
+++ b/include/hw/timer/aspeed_timer.h
@@ -24,10 +24,13 @@
 
 #include "qemu/timer.h"
 #include "hw/misc/aspeed_scu.h"
+#include "qom/object.h"
 
-#define ASPEED_TIMER(obj) \
-    OBJECT_CHECK(AspeedTimerCtrlState, (obj), TYPE_ASPEED_TIMER)
 #define TYPE_ASPEED_TIMER "aspeed.timer"
+typedef struct AspeedTimerClass AspeedTimerClass;
+typedef struct AspeedTimerCtrlState AspeedTimerCtrlState;
+DECLARE_OBJ_CHECKERS(AspeedTimerCtrlState, AspeedTimerClass,
+                     ASPEED_TIMER, TYPE_ASPEED_TIMER)
 #define TYPE_ASPEED_2400_TIMER TYPE_ASPEED_TIMER "-ast2400"
 #define TYPE_ASPEED_2500_TIMER TYPE_ASPEED_TIMER "-ast2500"
 #define TYPE_ASPEED_2600_TIMER TYPE_ASPEED_TIMER "-ast2600"
@@ -50,7 +53,7 @@ typedef struct AspeedTimer {
     uint64_t start;
 } AspeedTimer;
 
-typedef struct AspeedTimerCtrlState {
+struct AspeedTimerCtrlState {
     /*< private >*/
     SysBusDevice parent;
 
@@ -64,18 +67,14 @@ typedef struct AspeedTimerCtrlState {
     AspeedTimer timers[ASPEED_TIMER_NR_TIMERS];
 
     AspeedSCUState *scu;
-} AspeedTimerCtrlState;
+};
 
-#define ASPEED_TIMER_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedTimerClass, (klass), TYPE_ASPEED_TIMER)
-#define ASPEED_TIMER_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedTimerClass, (obj), TYPE_ASPEED_TIMER)
 
-typedef struct AspeedTimerClass {
+struct AspeedTimerClass {
     SysBusDeviceClass parent_class;
 
     uint64_t (*read)(AspeedTimerCtrlState *s, hwaddr offset);
     void (*write)(AspeedTimerCtrlState *s, hwaddr offset, uint64_t value);
-} AspeedTimerClass;
+};
 
 #endif /* ASPEED_TIMER_H */
diff --git a/include/hw/timer/avr_timer16.h b/include/hw/timer/avr_timer16.h
index 982019d242..d454bb31cb 100644
--- a/include/hw/timer/avr_timer16.h
+++ b/include/hw/timer/avr_timer16.h
@@ -31,6 +31,7 @@
 #include "hw/sysbus.h"
 #include "qemu/timer.h"
 #include "hw/hw.h"
+#include "qom/object.h"
 
 enum NextInterrupt {
     OVERFLOW,
@@ -41,10 +42,11 @@ enum NextInterrupt {
 };
 
 #define TYPE_AVR_TIMER16 "avr-timer16"
-#define AVR_TIMER16(obj) \
-    OBJECT_CHECK(AVRTimer16State, (obj), TYPE_AVR_TIMER16)
+typedef struct AVRTimer16State AVRTimer16State;
+DECLARE_INSTANCE_CHECKER(AVRTimer16State, AVR_TIMER16,
+                         TYPE_AVR_TIMER16)
 
-typedef struct AVRTimer16State {
+struct AVRTimer16State {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -89,6 +91,6 @@ typedef struct AVRTimer16State {
     uint64_t period_ns;
     uint64_t reset_time_ns;
     enum NextInterrupt next_interrupt;
-} AVRTimer16State;
+};
 
 #endif /* HW_TIMER_AVR_TIMER16_H */
diff --git a/include/hw/timer/bcm2835_systmr.h b/include/hw/timer/bcm2835_systmr.h
index c0bc5c8127..64166bd712 100644
--- a/include/hw/timer/bcm2835_systmr.h
+++ b/include/hw/timer/bcm2835_systmr.h
@@ -11,12 +11,14 @@
 
 #include "hw/sysbus.h"
 #include "hw/irq.h"
+#include "qom/object.h"
 
 #define TYPE_BCM2835_SYSTIMER "bcm2835-sys-timer"
-#define BCM2835_SYSTIMER(obj) \
-    OBJECT_CHECK(BCM2835SystemTimerState, (obj), TYPE_BCM2835_SYSTIMER)
+typedef struct BCM2835SystemTimerState BCM2835SystemTimerState;
+DECLARE_INSTANCE_CHECKER(BCM2835SystemTimerState, BCM2835_SYSTIMER,
+                         TYPE_BCM2835_SYSTIMER)
 
-typedef struct {
+struct BCM2835SystemTimerState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -28,6 +30,6 @@ typedef struct {
         uint32_t status;
         uint32_t compare[4];
     } reg;
-} BCM2835SystemTimerState;
+};
 
 #endif
diff --git a/include/hw/timer/cmsdk-apb-dualtimer.h b/include/hw/timer/cmsdk-apb-dualtimer.h
index 9843a9dbb1..7a5b9df5e5 100644
--- a/include/hw/timer/cmsdk-apb-dualtimer.h
+++ b/include/hw/timer/cmsdk-apb-dualtimer.h
@@ -28,12 +28,13 @@
 
 #include "hw/sysbus.h"
 #include "hw/ptimer.h"
+#include "qom/object.h"
 
 #define TYPE_CMSDK_APB_DUALTIMER "cmsdk-apb-dualtimer"
-#define CMSDK_APB_DUALTIMER(obj) OBJECT_CHECK(CMSDKAPBDualTimer, (obj), \
-                                              TYPE_CMSDK_APB_DUALTIMER)
-
 typedef struct CMSDKAPBDualTimer CMSDKAPBDualTimer;
+DECLARE_INSTANCE_CHECKER(CMSDKAPBDualTimer, CMSDK_APB_DUALTIMER,
+                         TYPE_CMSDK_APB_DUALTIMER)
+
 
 /* One of the two identical timer modules in the dual-timer module */
 typedef struct CMSDKAPBDualTimerModule {
diff --git a/include/hw/timer/cmsdk-apb-timer.h b/include/hw/timer/cmsdk-apb-timer.h
index f24bda6a46..0912bc0f3c 100644
--- a/include/hw/timer/cmsdk-apb-timer.h
+++ b/include/hw/timer/cmsdk-apb-timer.h
@@ -15,12 +15,14 @@
 #include "hw/qdev-properties.h"
 #include "hw/sysbus.h"
 #include "hw/ptimer.h"
+#include "qom/object.h"
 
 #define TYPE_CMSDK_APB_TIMER "cmsdk-apb-timer"
-#define CMSDK_APB_TIMER(obj) OBJECT_CHECK(CMSDKAPBTIMER, (obj), \
-                                         TYPE_CMSDK_APB_TIMER)
+typedef struct CMSDKAPBTIMER CMSDKAPBTIMER;
+DECLARE_INSTANCE_CHECKER(CMSDKAPBTIMER, CMSDK_APB_TIMER,
+                         TYPE_CMSDK_APB_TIMER)
 
-typedef struct {
+struct CMSDKAPBTIMER {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -34,7 +36,7 @@ typedef struct {
     uint32_t value;
     uint32_t reload;
     uint32_t intstatus;
-} CMSDKAPBTIMER;
+};
 
 /**
  * cmsdk_apb_timer_create - convenience function to create TYPE_CMSDK_APB_TIMER
diff --git a/include/hw/timer/digic-timer.h b/include/hw/timer/digic-timer.h
index d9e67fe291..84a0ef473a 100644
--- a/include/hw/timer/digic-timer.h
+++ b/include/hw/timer/digic-timer.h
@@ -20,9 +20,12 @@
 
 #include "hw/sysbus.h"
 #include "hw/ptimer.h"
+#include "qom/object.h"
 
 #define TYPE_DIGIC_TIMER "digic-timer"
-#define DIGIC_TIMER(obj) OBJECT_CHECK(DigicTimerState, (obj), TYPE_DIGIC_TIMER)
+typedef struct DigicTimerState DigicTimerState;
+DECLARE_INSTANCE_CHECKER(DigicTimerState, DIGIC_TIMER,
+                         TYPE_DIGIC_TIMER)
 
 #define DIGIC_TIMER_CONTROL 0x00
 #define DIGIC_TIMER_CONTROL_RST 0x80000000
@@ -30,7 +33,7 @@
 #define DIGIC_TIMER_RELVALUE 0x08
 #define DIGIC_TIMER_VALUE 0x0c
 
-typedef struct DigicTimerState {
+struct DigicTimerState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -40,6 +43,6 @@ typedef struct DigicTimerState {
 
     uint32_t control;
     uint32_t relvalue;
-} DigicTimerState;
+};
 
 #endif /* HW_TIMER_DIGIC_TIMER_H */
diff --git a/include/hw/timer/i8254.h b/include/hw/timer/i8254.h
index 206b8f8464..1a522a2457 100644
--- a/include/hw/timer/i8254.h
+++ b/include/hw/timer/i8254.h
@@ -28,6 +28,7 @@
 #include "hw/qdev-properties.h"
 #include "hw/isa/isa.h"
 #include "qapi/error.h"
+#include "qom/object.h"
 
 #define PIT_FREQ 1193182
 
@@ -41,12 +42,8 @@ typedef struct PITChannelInfo {
 #define TYPE_PIT_COMMON "pit-common"
 typedef struct PITCommonState PITCommonState;
 typedef struct PITCommonClass PITCommonClass;
-#define PIT_COMMON(obj) \
-     OBJECT_CHECK(PITCommonState, (obj), TYPE_PIT_COMMON)
-#define PIT_COMMON_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PITCommonClass, (klass), TYPE_PIT_COMMON)
-#define PIT_COMMON_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PITCommonClass, (obj), TYPE_PIT_COMMON)
+DECLARE_OBJ_CHECKERS(PITCommonState, PITCommonClass,
+                     PIT_COMMON, TYPE_PIT_COMMON)
 
 #define TYPE_I8254 "isa-pit"
 #define TYPE_KVM_I8254 "kvm-pit"
diff --git a/include/hw/timer/imx_epit.h b/include/hw/timer/imx_epit.h
index 0730ac35e6..39bcf81331 100644
--- a/include/hw/timer/imx_epit.h
+++ b/include/hw/timer/imx_epit.h
@@ -32,6 +32,7 @@
 #include "hw/sysbus.h"
 #include "hw/ptimer.h"
 #include "hw/misc/imx_ccm.h"
+#include "qom/object.h"
 
 /*
  * EPIT: Enhanced periodic interrupt timer
@@ -55,9 +56,11 @@
 #define EPIT_TIMER_MAX  0XFFFFFFFFUL
 
 #define TYPE_IMX_EPIT "imx.epit"
-#define IMX_EPIT(obj) OBJECT_CHECK(IMXEPITState, (obj), TYPE_IMX_EPIT)
+typedef struct IMXEPITState IMXEPITState;
+DECLARE_INSTANCE_CHECKER(IMXEPITState, IMX_EPIT,
+                         TYPE_IMX_EPIT)
 
-typedef struct IMXEPITState{
+struct IMXEPITState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -75,6 +78,6 @@ typedef struct IMXEPITState{
 
     uint32_t freq;
     qemu_irq irq;
-} IMXEPITState;
+};
 
 #endif /* IMX_EPIT_H */
diff --git a/include/hw/timer/imx_gpt.h b/include/hw/timer/imx_gpt.h
index 20ccb327c4..ff5c8a351a 100644
--- a/include/hw/timer/imx_gpt.h
+++ b/include/hw/timer/imx_gpt.h
@@ -32,6 +32,7 @@
 #include "hw/sysbus.h"
 #include "hw/ptimer.h"
 #include "hw/misc/imx_ccm.h"
+#include "qom/object.h"
 
 /*
  * GPT : General purpose timer
@@ -81,9 +82,11 @@
 
 #define TYPE_IMX_GPT TYPE_IMX25_GPT
 
-#define IMX_GPT(obj) OBJECT_CHECK(IMXGPTState, (obj), TYPE_IMX_GPT)
+typedef struct IMXGPTState IMXGPTState;
+DECLARE_INSTANCE_CHECKER(IMXGPTState, IMX_GPT,
+                         TYPE_IMX_GPT)
 
-typedef struct IMXGPTState{
+struct IMXGPTState {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -111,6 +114,6 @@ typedef struct IMXGPTState{
     qemu_irq irq;
 
     const IMXClk *clocks;
-} IMXGPTState;
+};
 
 #endif /* IMX_GPT_H */
diff --git a/include/hw/timer/mss-timer.h b/include/hw/timer/mss-timer.h
index e5a784b27e..d207bae2c0 100644
--- a/include/hw/timer/mss-timer.h
+++ b/include/hw/timer/mss-timer.h
@@ -27,10 +27,12 @@
 
 #include "hw/sysbus.h"
 #include "hw/ptimer.h"
+#include "qom/object.h"
 
 #define TYPE_MSS_TIMER     "mss-timer"
-#define MSS_TIMER(obj)     OBJECT_CHECK(MSSTimerState, \
-                              (obj), TYPE_MSS_TIMER)
+typedef struct MSSTimerState MSSTimerState;
+DECLARE_INSTANCE_CHECKER(MSSTimerState, MSS_TIMER,
+                         TYPE_MSS_TIMER)
 
 /*
  * There are two 32-bit down counting timers.
@@ -52,12 +54,12 @@ struct Msf2Timer {
     qemu_irq irq;
 };
 
-typedef struct MSSTimerState {
+struct MSSTimerState {
     SysBusDevice parent_obj;
 
     MemoryRegion mmio;
     uint32_t freq_hz;
     struct Msf2Timer timers[NUM_TIMERS];
-} MSSTimerState;
+};
 
 #endif /* HW_MSS_TIMER_H */
diff --git a/include/hw/timer/nrf51_timer.h b/include/hw/timer/nrf51_timer.h
index eb6815f21d..4261a03b95 100644
--- a/include/hw/timer/nrf51_timer.h
+++ b/include/hw/timer/nrf51_timer.h
@@ -15,8 +15,11 @@
 
 #include "hw/sysbus.h"
 #include "qemu/timer.h"
+#include "qom/object.h"
 #define TYPE_NRF51_TIMER "nrf51_soc.timer"
-#define NRF51_TIMER(obj) OBJECT_CHECK(NRF51TimerState, (obj), TYPE_NRF51_TIMER)
+typedef struct NRF51TimerState NRF51TimerState;
+DECLARE_INSTANCE_CHECKER(NRF51TimerState, NRF51_TIMER,
+                         TYPE_NRF51_TIMER)
 
 #define NRF51_TIMER_REG_COUNT 4
 
@@ -53,7 +56,7 @@
 #define NRF51_TIMER_REG_CC0 0x540
 #define NRF51_TIMER_REG_CC3 0x54C
 
-typedef struct NRF51TimerState {
+struct NRF51TimerState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
@@ -75,7 +78,7 @@ typedef struct NRF51TimerState {
     uint32_t bitmode;
     uint32_t prescaler;
 
-} NRF51TimerState;
+};
 
 
 #endif
diff --git a/include/hw/timer/renesas_cmt.h b/include/hw/timer/renesas_cmt.h
index e28a15cb38..1c0b65c1d5 100644
--- a/include/hw/timer/renesas_cmt.h
+++ b/include/hw/timer/renesas_cmt.h
@@ -11,16 +11,19 @@
 
 #include "qemu/timer.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_RENESAS_CMT "renesas-cmt"
-#define RCMT(obj) OBJECT_CHECK(RCMTState, (obj), TYPE_RENESAS_CMT)
+typedef struct RCMTState RCMTState;
+DECLARE_INSTANCE_CHECKER(RCMTState, RCMT,
+                         TYPE_RENESAS_CMT)
 
 enum {
     CMT_CH = 2,
     CMT_NR_IRQ = 1 * CMT_CH
 };
 
-typedef struct RCMTState {
+struct RCMTState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -35,6 +38,6 @@ typedef struct RCMTState {
     int64_t tick[CMT_CH];
     qemu_irq cmi[CMT_CH];
     QEMUTimer timer[CMT_CH];
-} RCMTState;
+};
 
 #endif
diff --git a/include/hw/timer/renesas_tmr.h b/include/hw/timer/renesas_tmr.h
index cf3baa7a28..caf7eec0dc 100644
--- a/include/hw/timer/renesas_tmr.h
+++ b/include/hw/timer/renesas_tmr.h
@@ -11,9 +11,12 @@
 
 #include "qemu/timer.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_RENESAS_TMR "renesas-tmr"
-#define RTMR(obj) OBJECT_CHECK(RTMRState, (obj), TYPE_RENESAS_TMR)
+typedef struct RTMRState RTMRState;
+DECLARE_INSTANCE_CHECKER(RTMRState, RTMR,
+                         TYPE_RENESAS_TMR)
 
 enum timer_event {
     cmia = 0,
@@ -28,7 +31,7 @@ enum {
     TMR_NR_IRQ = 3 * TMR_CH
 };
 
-typedef struct RTMRState {
+struct RTMRState {
     /*< private >*/
     SysBusDevice parent_obj;
     /*< public >*/
@@ -50,6 +53,6 @@ typedef struct RTMRState {
     qemu_irq cmib[TMR_CH];
     qemu_irq ovi[TMR_CH];
     QEMUTimer timer[TMR_CH];
-} RTMRState;
+};
 
 #endif
diff --git a/include/hw/timer/stm32f2xx_timer.h b/include/hw/timer/stm32f2xx_timer.h
index a96bc08b1b..90f40f1746 100644
--- a/include/hw/timer/stm32f2xx_timer.h
+++ b/include/hw/timer/stm32f2xx_timer.h
@@ -27,6 +27,7 @@
 
 #include "hw/sysbus.h"
 #include "qemu/timer.h"
+#include "qom/object.h"
 
 #define TIM_CR1      0x00
 #define TIM_CR2      0x04
@@ -61,10 +62,11 @@
 #define TIM_DIER_UIE  1
 
 #define TYPE_STM32F2XX_TIMER "stm32f2xx-timer"
-#define STM32F2XXTIMER(obj) OBJECT_CHECK(STM32F2XXTimerState, \
-                            (obj), TYPE_STM32F2XX_TIMER)
+typedef struct STM32F2XXTimerState STM32F2XXTimerState;
+DECLARE_INSTANCE_CHECKER(STM32F2XXTimerState, STM32F2XXTIMER,
+                         TYPE_STM32F2XX_TIMER)
 
-typedef struct STM32F2XXTimerState {
+struct STM32F2XXTimerState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -95,6 +97,6 @@ typedef struct STM32F2XXTimerState {
     uint32_t tim_dcr;
     uint32_t tim_dmar;
     uint32_t tim_or;
-} STM32F2XXTimerState;
+};
 
 #endif /* HW_STM32F2XX_TIMER_H */
diff --git a/include/hw/usb.h b/include/hw/usb.h
index e29a37635b..5783635491 100644
--- a/include/hw/usb.h
+++ b/include/hw/usb.h
@@ -29,6 +29,7 @@
 #include "hw/qdev-core.h"
 #include "qemu/iov.h"
 #include "qemu/queue.h"
+#include "qom/object.h"
 
 /* Constants related to the USB / PCI interaction */
 #define USB_SBRN    0x60 /* Serial Bus Release Number Register */
@@ -264,17 +265,14 @@ struct USBDevice {
 };
 
 #define TYPE_USB_DEVICE "usb-device"
-#define USB_DEVICE(obj) \
-     OBJECT_CHECK(USBDevice, (obj), TYPE_USB_DEVICE)
-#define USB_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(USBDeviceClass, (klass), TYPE_USB_DEVICE)
-#define USB_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(USBDeviceClass, (obj), TYPE_USB_DEVICE)
+typedef struct USBDeviceClass USBDeviceClass;
+DECLARE_OBJ_CHECKERS(USBDevice, USBDeviceClass,
+                     USB_DEVICE, TYPE_USB_DEVICE)
 
 typedef void (*USBDeviceRealize)(USBDevice *dev, Error **errp);
 typedef void (*USBDeviceUnrealize)(USBDevice *dev);
 
-typedef struct USBDeviceClass {
+struct USBDeviceClass {
     DeviceClass parent_class;
 
     USBDeviceRealize realize;
@@ -346,7 +344,7 @@ typedef struct USBDeviceClass {
     const char *product_desc;
     const USBDesc *usb_desc;
     bool attached_settable;
-} USBDeviceClass;
+};
 
 typedef struct USBPortOps {
     void (*attach)(USBPort *port);
@@ -477,7 +475,8 @@ bool usb_host_dev_is_scsi_storage(USBDevice *usbdev);
 /* usb-bus.c */
 
 #define TYPE_USB_BUS "usb-bus"
-#define USB_BUS(obj) OBJECT_CHECK(USBBus, (obj), TYPE_USB_BUS)
+DECLARE_INSTANCE_CHECKER(USBBus, USB_BUS,
+                         TYPE_USB_BUS)
 
 struct USBBus {
     BusState qbus;
diff --git a/include/hw/usb/chipidea.h b/include/hw/usb/chipidea.h
index 1ec2e9dbda..f0303b8721 100644
--- a/include/hw/usb/chipidea.h
+++ b/include/hw/usb/chipidea.h
@@ -2,15 +2,18 @@
 #define CHIPIDEA_H
 
 #include "hw/usb/hcd-ehci.h"
+#include "qom/object.h"
 
-typedef struct ChipideaState {
+struct ChipideaState {
     /*< private >*/
     EHCISysBusState parent_obj;
 
     MemoryRegion iomem[3];
-} ChipideaState;
+};
+typedef struct ChipideaState ChipideaState;
 
 #define TYPE_CHIPIDEA "usb-chipidea"
-#define CHIPIDEA(obj) OBJECT_CHECK(ChipideaState, (obj), TYPE_CHIPIDEA)
+DECLARE_INSTANCE_CHECKER(ChipideaState, CHIPIDEA,
+                         TYPE_CHIPIDEA)
 
 #endif /* CHIPIDEA_H */
diff --git a/include/hw/usb/imx-usb-phy.h b/include/hw/usb/imx-usb-phy.h
index 07f0235d10..f7f92fc462 100644
--- a/include/hw/usb/imx-usb-phy.h
+++ b/include/hw/usb/imx-usb-phy.h
@@ -3,6 +3,7 @@
 
 #include "hw/sysbus.h"
 #include "qemu/bitops.h"
+#include "qom/object.h"
 
 enum IMXUsbPhyRegisters {
     USBPHY_PWD,
@@ -38,9 +39,11 @@ enum IMXUsbPhyRegisters {
 #define USBPHY_CTRL_SFTRST BIT(31)
 
 #define TYPE_IMX_USBPHY "imx.usbphy"
-#define IMX_USBPHY(obj) OBJECT_CHECK(IMXUSBPHYState, (obj), TYPE_IMX_USBPHY)
+typedef struct IMXUSBPHYState IMXUSBPHYState;
+DECLARE_INSTANCE_CHECKER(IMXUSBPHYState, IMX_USBPHY,
+                         TYPE_IMX_USBPHY)
 
-typedef struct IMXUSBPHYState {
+struct IMXUSBPHYState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -48,6 +51,6 @@ typedef struct IMXUSBPHYState {
     MemoryRegion iomem;
 
     uint32_t usbphy[USBPHY_MAX];
-} IMXUSBPHYState;
+};
 
 #endif /* IMX_USB_PHY_H */
diff --git a/include/hw/vfio/vfio-amd-xgbe.h b/include/hw/vfio/vfio-amd-xgbe.h
index 9fff65e99d..a894546c02 100644
--- a/include/hw/vfio/vfio-amd-xgbe.h
+++ b/include/hw/vfio/vfio-amd-xgbe.h
@@ -15,6 +15,7 @@
 #define HW_VFIO_VFIO_AMD_XGBE_H
 
 #include "hw/vfio/vfio-platform.h"
+#include "qom/object.h"
 
 #define TYPE_VFIO_AMD_XGBE "vfio-amd-xgbe"
 
@@ -39,13 +40,7 @@ struct VFIOAmdXgbeDeviceClass {
 
 typedef struct VFIOAmdXgbeDeviceClass VFIOAmdXgbeDeviceClass;
 
-#define VFIO_AMD_XGBE_DEVICE(obj) \
-     OBJECT_CHECK(VFIOAmdXgbeDevice, (obj), TYPE_VFIO_AMD_XGBE)
-#define VFIO_AMD_XGBE_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(VFIOAmdXgbeDeviceClass, (klass), \
-                        TYPE_VFIO_AMD_XGBE)
-#define VFIO_AMD_XGBE_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(VFIOAmdXgbeDeviceClass, (obj), \
-                      TYPE_VFIO_AMD_XGBE)
+DECLARE_OBJ_CHECKERS(VFIOAmdXgbeDevice, VFIOAmdXgbeDeviceClass,
+                     VFIO_AMD_XGBE_DEVICE, TYPE_VFIO_AMD_XGBE)
 
 #endif
diff --git a/include/hw/vfio/vfio-calxeda-xgmac.h b/include/hw/vfio/vfio-calxeda-xgmac.h
index f994775c09..8482f151dd 100644
--- a/include/hw/vfio/vfio-calxeda-xgmac.h
+++ b/include/hw/vfio/vfio-calxeda-xgmac.h
@@ -15,6 +15,7 @@
 #define HW_VFIO_VFIO_CALXEDA_XGMAC_H
 
 #include "hw/vfio/vfio-platform.h"
+#include "qom/object.h"
 
 #define TYPE_VFIO_CALXEDA_XGMAC "vfio-calxeda-xgmac"
 
@@ -23,24 +24,20 @@
  * - a single MMIO region corresponding to its register space
  * - 3 IRQS (main and 2 power related IRQs)
  */
-typedef struct VFIOCalxedaXgmacDevice {
+struct VFIOCalxedaXgmacDevice {
     VFIOPlatformDevice vdev;
-} VFIOCalxedaXgmacDevice;
+};
+typedef struct VFIOCalxedaXgmacDevice VFIOCalxedaXgmacDevice;
 
-typedef struct VFIOCalxedaXgmacDeviceClass {
+struct VFIOCalxedaXgmacDeviceClass {
     /*< private >*/
     VFIOPlatformDeviceClass parent_class;
     /*< public >*/
     DeviceRealize parent_realize;
-} VFIOCalxedaXgmacDeviceClass;
+};
+typedef struct VFIOCalxedaXgmacDeviceClass VFIOCalxedaXgmacDeviceClass;
 
-#define VFIO_CALXEDA_XGMAC_DEVICE(obj) \
-     OBJECT_CHECK(VFIOCalxedaXgmacDevice, (obj), TYPE_VFIO_CALXEDA_XGMAC)
-#define VFIO_CALXEDA_XGMAC_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(VFIOCalxedaXgmacDeviceClass, (klass), \
-                        TYPE_VFIO_CALXEDA_XGMAC)
-#define VFIO_CALXEDA_XGMAC_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(VFIOCalxedaXgmacDeviceClass, (obj), \
-                      TYPE_VFIO_CALXEDA_XGMAC)
+DECLARE_OBJ_CHECKERS(VFIOCalxedaXgmacDevice, VFIOCalxedaXgmacDeviceClass,
+                     VFIO_CALXEDA_XGMAC_DEVICE, TYPE_VFIO_CALXEDA_XGMAC)
 
 #endif
diff --git a/include/hw/vfio/vfio-platform.h b/include/hw/vfio/vfio-platform.h
index 4ec70c813a..c414c3dffc 100644
--- a/include/hw/vfio/vfio-platform.h
+++ b/include/hw/vfio/vfio-platform.h
@@ -20,6 +20,7 @@
 #include "hw/vfio/vfio-common.h"
 #include "qemu/event_notifier.h"
 #include "qemu/queue.h"
+#include "qom/object.h"
 
 #define TYPE_VFIO_PLATFORM "vfio-platform"
 
@@ -46,7 +47,7 @@ typedef struct VFIOINTp {
 /* function type for user side eventfd handler */
 typedef void (*eventfd_user_side_handler_t)(VFIOINTp *intp);
 
-typedef struct VFIOPlatformDevice {
+struct VFIOPlatformDevice {
     SysBusDevice sbdev;
     VFIODevice vbasedev; /* not a QOM object */
     VFIORegion **regions;
@@ -59,19 +60,17 @@ typedef struct VFIOPlatformDevice {
     QEMUTimer *mmap_timer; /* allows fast-path resume after IRQ hit */
     QemuMutex intp_mutex; /* protect the intp_list IRQ state */
     bool irqfd_allowed; /* debug option to force irqfd on/off */
-} VFIOPlatformDevice;
+};
+typedef struct VFIOPlatformDevice VFIOPlatformDevice;
 
-typedef struct VFIOPlatformDeviceClass {
+struct VFIOPlatformDeviceClass {
     /*< private >*/
     SysBusDeviceClass parent_class;
     /*< public >*/
-} VFIOPlatformDeviceClass;
+};
+typedef struct VFIOPlatformDeviceClass VFIOPlatformDeviceClass;
 
-#define VFIO_PLATFORM_DEVICE(obj) \
-     OBJECT_CHECK(VFIOPlatformDevice, (obj), TYPE_VFIO_PLATFORM)
-#define VFIO_PLATFORM_DEVICE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(VFIOPlatformDeviceClass, (klass), TYPE_VFIO_PLATFORM)
-#define VFIO_PLATFORM_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(VFIOPlatformDeviceClass, (obj), TYPE_VFIO_PLATFORM)
+DECLARE_OBJ_CHECKERS(VFIOPlatformDevice, VFIOPlatformDeviceClass,
+                     VFIO_PLATFORM_DEVICE, TYPE_VFIO_PLATFORM)
 
 #endif /* HW_VFIO_VFIO_PLATFORM_H */
diff --git a/include/hw/virtio/vhost-scsi-common.h b/include/hw/virtio/vhost-scsi-common.h
index 16bf1a73c1..5f0bf73d9d 100644
--- a/include/hw/virtio/vhost-scsi-common.h
+++ b/include/hw/virtio/vhost-scsi-common.h
@@ -17,12 +17,14 @@
 #include "hw/virtio/virtio-scsi.h"
 #include "hw/virtio/vhost.h"
 #include "hw/fw-path-provider.h"
+#include "qom/object.h"
 
 #define TYPE_VHOST_SCSI_COMMON "vhost-scsi-common"
-#define VHOST_SCSI_COMMON(obj) \
-        OBJECT_CHECK(VHostSCSICommon, (obj), TYPE_VHOST_SCSI_COMMON)
+typedef struct VHostSCSICommon VHostSCSICommon;
+DECLARE_INSTANCE_CHECKER(VHostSCSICommon, VHOST_SCSI_COMMON,
+                         TYPE_VHOST_SCSI_COMMON)
 
-typedef struct VHostSCSICommon {
+struct VHostSCSICommon {
     VirtIOSCSICommon parent_obj;
 
     Error *migration_blocker;
@@ -35,7 +37,7 @@ typedef struct VHostSCSICommon {
     int lun;
     uint64_t host_features;
     bool migratable;
-} VHostSCSICommon;
+};
 
 int vhost_scsi_common_start(VHostSCSICommon *vsc);
 void vhost_scsi_common_stop(VHostSCSICommon *vsc);
diff --git a/include/hw/virtio/vhost-scsi.h b/include/hw/virtio/vhost-scsi.h
index 23252153ff..7a77644150 100644
--- a/include/hw/virtio/vhost-scsi.h
+++ b/include/hw/virtio/vhost-scsi.h
@@ -17,6 +17,7 @@
 #include "hw/virtio/virtio-scsi.h"
 #include "hw/virtio/vhost.h"
 #include "hw/virtio/vhost-scsi-common.h"
+#include "qom/object.h"
 
 enum vhost_scsi_vq_list {
     VHOST_SCSI_VQ_CONTROL = 0,
@@ -25,11 +26,12 @@ enum vhost_scsi_vq_list {
 };
 
 #define TYPE_VHOST_SCSI "vhost-scsi"
-#define VHOST_SCSI(obj) \
-        OBJECT_CHECK(VHostSCSI, (obj), TYPE_VHOST_SCSI)
+typedef struct VHostSCSI VHostSCSI;
+DECLARE_INSTANCE_CHECKER(VHostSCSI, VHOST_SCSI,
+                         TYPE_VHOST_SCSI)
 
-typedef struct VHostSCSI {
+struct VHostSCSI {
     VHostSCSICommon parent_obj;
-} VHostSCSI;
+};
 
 #endif
diff --git a/include/hw/virtio/vhost-user-blk.h b/include/hw/virtio/vhost-user-blk.h
index 292d17147c..dc40ab6f11 100644
--- a/include/hw/virtio/vhost-user-blk.h
+++ b/include/hw/virtio/vhost-user-blk.h
@@ -20,14 +20,16 @@
 #include "chardev/char-fe.h"
 #include "hw/virtio/vhost.h"
 #include "hw/virtio/vhost-user.h"
+#include "qom/object.h"
 
 #define TYPE_VHOST_USER_BLK "vhost-user-blk"
-#define VHOST_USER_BLK(obj) \
-        OBJECT_CHECK(VHostUserBlk, (obj), TYPE_VHOST_USER_BLK)
+typedef struct VHostUserBlk VHostUserBlk;
+DECLARE_INSTANCE_CHECKER(VHostUserBlk, VHOST_USER_BLK,
+                         TYPE_VHOST_USER_BLK)
 
 #define VHOST_USER_BLK_AUTO_NUM_QUEUES UINT16_MAX
 
-typedef struct VHostUserBlk {
+struct VHostUserBlk {
     VirtIODevice parent_obj;
     CharBackend chardev;
     int32_t bootindex;
@@ -41,6 +43,6 @@ typedef struct VHostUserBlk {
     struct vhost_virtqueue *vhost_vqs;
     VirtQueue **virtqs;
     bool connected;
-} VHostUserBlk;
+};
 
 #endif
diff --git a/include/hw/virtio/vhost-user-fs.h b/include/hw/virtio/vhost-user-fs.h
index 6f3030d288..9033e6f902 100644
--- a/include/hw/virtio/vhost-user-fs.h
+++ b/include/hw/virtio/vhost-user-fs.h
@@ -18,10 +18,12 @@
 #include "hw/virtio/vhost.h"
 #include "hw/virtio/vhost-user.h"
 #include "chardev/char-fe.h"
+#include "qom/object.h"
 
 #define TYPE_VHOST_USER_FS "vhost-user-fs-device"
-#define VHOST_USER_FS(obj) \
-        OBJECT_CHECK(VHostUserFS, (obj), TYPE_VHOST_USER_FS)
+typedef struct VHostUserFS VHostUserFS;
+DECLARE_INSTANCE_CHECKER(VHostUserFS, VHOST_USER_FS,
+                         TYPE_VHOST_USER_FS)
 
 typedef struct {
     CharBackend chardev;
@@ -30,7 +32,7 @@ typedef struct {
     uint16_t queue_size;
 } VHostUserFSConf;
 
-typedef struct {
+struct VHostUserFS {
     /*< private >*/
     VirtIODevice parent;
     VHostUserFSConf conf;
@@ -41,6 +43,6 @@ typedef struct {
     VirtQueue *hiprio_vq;
 
     /*< public >*/
-} VHostUserFS;
+};
 
 #endif /* _QEMU_VHOST_USER_FS_H */
diff --git a/include/hw/virtio/vhost-user-scsi.h b/include/hw/virtio/vhost-user-scsi.h
index 99ab2f2cc4..342d67ee9e 100644
--- a/include/hw/virtio/vhost-user-scsi.h
+++ b/include/hw/virtio/vhost-user-scsi.h
@@ -21,14 +21,16 @@
 #include "hw/virtio/vhost.h"
 #include "hw/virtio/vhost-user.h"
 #include "hw/virtio/vhost-scsi-common.h"
+#include "qom/object.h"
 
 #define TYPE_VHOST_USER_SCSI "vhost-user-scsi"
-#define VHOST_USER_SCSI(obj) \
-        OBJECT_CHECK(VHostUserSCSI, (obj), TYPE_VHOST_USER_SCSI)
+typedef struct VHostUserSCSI VHostUserSCSI;
+DECLARE_INSTANCE_CHECKER(VHostUserSCSI, VHOST_USER_SCSI,
+                         TYPE_VHOST_USER_SCSI)
 
-typedef struct VHostUserSCSI {
+struct VHostUserSCSI {
     VHostSCSICommon parent_obj;
     VhostUserState vhost_user;
-} VHostUserSCSI;
+};
 
 #endif /* VHOST_USER_SCSI_H */
diff --git a/include/hw/virtio/vhost-user-vsock.h b/include/hw/virtio/vhost-user-vsock.h
index 4e128a4b9f..b3c40c16a3 100644
--- a/include/hw/virtio/vhost-user-vsock.h
+++ b/include/hw/virtio/vhost-user-vsock.h
@@ -14,16 +14,18 @@
 #include "hw/virtio/vhost-vsock-common.h"
 #include "hw/virtio/vhost-user.h"
 #include "standard-headers/linux/virtio_vsock.h"
+#include "qom/object.h"
 
 #define TYPE_VHOST_USER_VSOCK "vhost-user-vsock-device"
-#define VHOST_USER_VSOCK(obj) \
-        OBJECT_CHECK(VHostUserVSock, (obj), TYPE_VHOST_USER_VSOCK)
+typedef struct VHostUserVSock VHostUserVSock;
+DECLARE_INSTANCE_CHECKER(VHostUserVSock, VHOST_USER_VSOCK,
+                         TYPE_VHOST_USER_VSOCK)
 
 typedef struct {
     CharBackend chardev;
 } VHostUserVSockConf;
 
-typedef struct {
+struct VHostUserVSock {
     /*< private >*/
     VHostVSockCommon parent;
     VhostUserState vhost_user;
@@ -31,6 +33,6 @@ typedef struct {
     struct virtio_vsock_config vsockcfg;
 
     /*< public >*/
-} VHostUserVSock;
+};
 
 #endif /* _QEMU_VHOST_USER_VSOCK_H */
diff --git a/include/hw/virtio/vhost-vsock-common.h b/include/hw/virtio/vhost-vsock-common.h
index f8b4aaae00..60bfb68db1 100644
--- a/include/hw/virtio/vhost-vsock-common.h
+++ b/include/hw/virtio/vhost-vsock-common.h
@@ -13,10 +13,12 @@
 
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/vhost.h"
+#include "qom/object.h"
 
 #define TYPE_VHOST_VSOCK_COMMON "vhost-vsock-common"
-#define VHOST_VSOCK_COMMON(obj) \
-        OBJECT_CHECK(VHostVSockCommon, (obj), TYPE_VHOST_VSOCK_COMMON)
+typedef struct VHostVSockCommon VHostVSockCommon;
+DECLARE_INSTANCE_CHECKER(VHostVSockCommon, VHOST_VSOCK_COMMON,
+                         TYPE_VHOST_VSOCK_COMMON)
 
 enum {
     VHOST_VSOCK_SAVEVM_VERSION = 0,
@@ -24,7 +26,7 @@ enum {
     VHOST_VSOCK_QUEUE_SIZE = 128,
 };
 
-typedef struct {
+struct VHostVSockCommon {
     VirtIODevice parent;
 
     struct vhost_virtqueue vhost_vqs[2];
@@ -35,7 +37,7 @@ typedef struct {
     VirtQueue *trans_vq;
 
     QEMUTimer *post_load_timer;
-} VHostVSockCommon;
+};
 
 int vhost_vsock_common_start(VirtIODevice *vdev);
 void vhost_vsock_common_stop(VirtIODevice *vdev);
diff --git a/include/hw/virtio/vhost-vsock.h b/include/hw/virtio/vhost-vsock.h
index 8cbb7b90f9..c561cc427a 100644
--- a/include/hw/virtio/vhost-vsock.h
+++ b/include/hw/virtio/vhost-vsock.h
@@ -15,22 +15,24 @@
 #define QEMU_VHOST_VSOCK_H
 
 #include "hw/virtio/vhost-vsock-common.h"
+#include "qom/object.h"
 
 #define TYPE_VHOST_VSOCK "vhost-vsock-device"
-#define VHOST_VSOCK(obj) \
-        OBJECT_CHECK(VHostVSock, (obj), TYPE_VHOST_VSOCK)
+typedef struct VHostVSock VHostVSock;
+DECLARE_INSTANCE_CHECKER(VHostVSock, VHOST_VSOCK,
+                         TYPE_VHOST_VSOCK)
 
 typedef struct {
     uint64_t guest_cid;
     char *vhostfd;
 } VHostVSockConf;
 
-typedef struct {
+struct VHostVSock {
     /*< private >*/
     VHostVSockCommon parent;
     VHostVSockConf conf;
 
     /*< public >*/
-} VHostVSock;
+};
 
 #endif /* QEMU_VHOST_VSOCK_H */
diff --git a/include/hw/virtio/virtio-balloon.h b/include/hw/virtio/virtio-balloon.h
index 28fd2b3960..0d08f496d9 100644
--- a/include/hw/virtio/virtio-balloon.h
+++ b/include/hw/virtio/virtio-balloon.h
@@ -18,10 +18,12 @@
 #include "standard-headers/linux/virtio_balloon.h"
 #include "hw/virtio/virtio.h"
 #include "sysemu/iothread.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_BALLOON "virtio-balloon-device"
-#define VIRTIO_BALLOON(obj) \
-        OBJECT_CHECK(VirtIOBalloon, (obj), TYPE_VIRTIO_BALLOON)
+typedef struct VirtIOBalloon VirtIOBalloon;
+DECLARE_INSTANCE_CHECKER(VirtIOBalloon, VIRTIO_BALLOON,
+                         TYPE_VIRTIO_BALLOON)
 
 #define VIRTIO_BALLOON_FREE_PAGE_HINT_CMD_ID_MIN 0x80000000
 
@@ -40,7 +42,7 @@ enum virtio_balloon_free_page_hint_status {
     FREE_PAGE_HINT_S_DONE = 3,
 };
 
-typedef struct VirtIOBalloon {
+struct VirtIOBalloon {
     VirtIODevice parent_obj;
     VirtQueue *ivq, *dvq, *svq, *free_page_vq, *reporting_vq;
     uint32_t free_page_hint_status;
@@ -71,6 +73,6 @@ typedef struct VirtIOBalloon {
 
     bool qemu_4_0_config_size;
     uint32_t poison_val;
-} VirtIOBalloon;
+};
 
 #endif
diff --git a/include/hw/virtio/virtio-blk.h b/include/hw/virtio/virtio-blk.h
index 7539c2b848..29c9f32353 100644
--- a/include/hw/virtio/virtio-blk.h
+++ b/include/hw/virtio/virtio-blk.h
@@ -19,10 +19,12 @@
 #include "hw/block/block.h"
 #include "sysemu/iothread.h"
 #include "sysemu/block-backend.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_BLK "virtio-blk-device"
-#define VIRTIO_BLK(obj) \
-        OBJECT_CHECK(VirtIOBlock, (obj), TYPE_VIRTIO_BLK)
+typedef struct VirtIOBlock VirtIOBlock;
+DECLARE_INSTANCE_CHECKER(VirtIOBlock, VIRTIO_BLK,
+                         TYPE_VIRTIO_BLK)
 
 /* This is the last element of the write scatter-gather list */
 struct virtio_blk_inhdr
@@ -49,7 +51,7 @@ struct VirtIOBlkConf
 struct VirtIOBlockDataPlane;
 
 struct VirtIOBlockReq;
-typedef struct VirtIOBlock {
+struct VirtIOBlock {
     VirtIODevice parent_obj;
     BlockBackend *blk;
     void *rq;
@@ -63,7 +65,7 @@ typedef struct VirtIOBlock {
     struct VirtIOBlockDataPlane *dataplane;
     uint64_t host_features;
     size_t config_size;
-} VirtIOBlock;
+};
 
 typedef struct VirtIOBlockReq {
     VirtQueueElement elem;
diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h
index 0f6f215925..ef8abe49c5 100644
--- a/include/hw/virtio/virtio-bus.h
+++ b/include/hw/virtio/virtio-bus.h
@@ -27,17 +27,16 @@
 
 #include "hw/qdev-core.h"
 #include "hw/virtio/virtio.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_BUS "virtio-bus"
-#define VIRTIO_BUS_GET_CLASS(obj) \
-        OBJECT_GET_CLASS(VirtioBusClass, obj, TYPE_VIRTIO_BUS)
-#define VIRTIO_BUS_CLASS(klass) \
-        OBJECT_CLASS_CHECK(VirtioBusClass, klass, TYPE_VIRTIO_BUS)
-#define VIRTIO_BUS(obj) OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_BUS)
-
+typedef struct VirtioBusClass VirtioBusClass;
 typedef struct VirtioBusState VirtioBusState;
+DECLARE_OBJ_CHECKERS(VirtioBusState, VirtioBusClass,
+                     VIRTIO_BUS, TYPE_VIRTIO_BUS)
+
 
-typedef struct VirtioBusClass {
+struct VirtioBusClass {
     /* This is what a VirtioBus must implement */
     BusClass parent;
     void (*notify)(DeviceState *d, uint16_t vector);
@@ -94,7 +93,7 @@ typedef struct VirtioBusClass {
      */
     bool has_variable_vring_alignment;
     AddressSpace *(*get_dma_as)(DeviceState *d);
-} VirtioBusClass;
+};
 
 struct VirtioBusState {
     BusState parent_obj;
diff --git a/include/hw/virtio/virtio-crypto.h b/include/hw/virtio/virtio-crypto.h
index ffe2391ece..7969695983 100644
--- a/include/hw/virtio/virtio-crypto.h
+++ b/include/hw/virtio/virtio-crypto.h
@@ -18,6 +18,7 @@
 #include "hw/virtio/virtio.h"
 #include "sysemu/iothread.h"
 #include "sysemu/cryptodev.h"
+#include "qom/object.h"
 
 
 #define DEBUG_VIRTIO_CRYPTO 0
@@ -31,8 +32,9 @@ do { \
 
 
 #define TYPE_VIRTIO_CRYPTO "virtio-crypto-device"
-#define VIRTIO_CRYPTO(obj) \
-        OBJECT_CHECK(VirtIOCrypto, (obj), TYPE_VIRTIO_CRYPTO)
+typedef struct VirtIOCrypto VirtIOCrypto;
+DECLARE_INSTANCE_CHECKER(VirtIOCrypto, VIRTIO_CRYPTO,
+                         TYPE_VIRTIO_CRYPTO)
 #define VIRTIO_CRYPTO_GET_PARENT_CLASS(obj) \
         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_CRYPTO)
 
@@ -82,7 +84,7 @@ typedef struct VirtIOCryptoQueue {
     struct VirtIOCrypto *vcrypto;
 } VirtIOCryptoQueue;
 
-typedef struct VirtIOCrypto {
+struct VirtIOCrypto {
     VirtIODevice parent_obj;
 
     VirtQueue *ctrl_vq;
@@ -97,6 +99,6 @@ typedef struct VirtIOCrypto {
     uint32_t curr_queues;
     size_t config_size;
     uint8_t vhost_started;
-} VirtIOCrypto;
+};
 
 #endif /* QEMU_VIRTIO_CRYPTO_H */
diff --git a/include/hw/virtio/virtio-gpu-pci.h b/include/hw/virtio/virtio-gpu-pci.h
index 2f69b5a9cc..5201792ede 100644
--- a/include/hw/virtio/virtio-gpu-pci.h
+++ b/include/hw/virtio/virtio-gpu-pci.h
@@ -16,6 +16,7 @@
 
 #include "hw/virtio/virtio-pci.h"
 #include "hw/virtio/virtio-gpu.h"
+#include "qom/object.h"
 
 typedef struct VirtIOGPUPCIBase VirtIOGPUPCIBase;
 
@@ -23,8 +24,8 @@ typedef struct VirtIOGPUPCIBase VirtIOGPUPCIBase;
  * virtio-gpu-pci-base: This extends VirtioPCIProxy.
  */
 #define TYPE_VIRTIO_GPU_PCI_BASE "virtio-gpu-pci-base"
-#define VIRTIO_GPU_PCI_BASE(obj)                                    \
-    OBJECT_CHECK(VirtIOGPUPCIBase, (obj), TYPE_VIRTIO_GPU_PCI_BASE)
+DECLARE_INSTANCE_CHECKER(VirtIOGPUPCIBase, VIRTIO_GPU_PCI_BASE,
+                         TYPE_VIRTIO_GPU_PCI_BASE)
 
 struct VirtIOGPUPCIBase {
     VirtIOPCIProxy parent_obj;
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index 7517438e10..f334b78085 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -22,22 +22,21 @@
 #include "sysemu/vhost-user-backend.h"
 
 #include "standard-headers/linux/virtio_gpu.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_GPU_BASE "virtio-gpu-base"
-#define VIRTIO_GPU_BASE(obj)                                                \
-    OBJECT_CHECK(VirtIOGPUBase, (obj), TYPE_VIRTIO_GPU_BASE)
-#define VIRTIO_GPU_BASE_GET_CLASS(obj)                                      \
-    OBJECT_GET_CLASS(VirtIOGPUBaseClass, obj, TYPE_VIRTIO_GPU_BASE)
-#define VIRTIO_GPU_BASE_CLASS(klass)                                        \
-    OBJECT_CLASS_CHECK(VirtIOGPUBaseClass, klass, TYPE_VIRTIO_GPU_BASE)
+OBJECT_DECLARE_TYPE(VirtIOGPUBase, VirtIOGPUBaseClass,
+                    virtio_gpu_base, VIRTIO_GPU_BASE)
 
 #define TYPE_VIRTIO_GPU "virtio-gpu-device"
-#define VIRTIO_GPU(obj)                                        \
-        OBJECT_CHECK(VirtIOGPU, (obj), TYPE_VIRTIO_GPU)
+typedef struct VirtIOGPU VirtIOGPU;
+DECLARE_INSTANCE_CHECKER(VirtIOGPU, VIRTIO_GPU,
+                         TYPE_VIRTIO_GPU)
 
 #define TYPE_VHOST_USER_GPU "vhost-user-gpu"
-#define VHOST_USER_GPU(obj)                                    \
-    OBJECT_CHECK(VhostUserGPU, (obj), TYPE_VHOST_USER_GPU)
+typedef struct VhostUserGPU VhostUserGPU;
+DECLARE_INSTANCE_CHECKER(VhostUserGPU, VHOST_USER_GPU,
+                         TYPE_VHOST_USER_GPU)
 
 #define VIRTIO_ID_GPU 16
 
@@ -100,7 +99,7 @@ struct virtio_gpu_ctrl_command {
     QTAILQ_ENTRY(virtio_gpu_ctrl_command) next;
 };
 
-typedef struct VirtIOGPUBase {
+struct VirtIOGPUBase {
     VirtIODevice parent_obj;
 
     Error *migration_blocker;
@@ -116,13 +115,13 @@ typedef struct VirtIOGPUBase {
 
     int enabled_output_bitmask;
     struct virtio_gpu_requested_state req_state[VIRTIO_GPU_MAX_SCANOUTS];
-} VirtIOGPUBase;
+};
 
-typedef struct VirtIOGPUBaseClass {
+struct VirtIOGPUBaseClass {
     VirtioDeviceClass parent;
 
     void (*gl_unblock)(VirtIOGPUBase *g);
-} VirtIOGPUBaseClass;
+};
 
 #define VIRTIO_GPU_BASE_PROPERTIES(_state, _conf)                       \
     DEFINE_PROP_UINT32("max_outputs", _state, _conf.max_outputs, 1),    \
@@ -131,7 +130,7 @@ typedef struct VirtIOGPUBaseClass {
     DEFINE_PROP_UINT32("xres", _state, _conf.xres, 1024), \
     DEFINE_PROP_UINT32("yres", _state, _conf.yres, 768)
 
-typedef struct VirtIOGPU {
+struct VirtIOGPU {
     VirtIOGPUBase parent_obj;
 
     uint64_t conf_max_hostmem;
@@ -160,9 +159,9 @@ typedef struct VirtIOGPU {
         uint32_t req_3d;
         uint32_t bytes_3d;
     } stats;
-} VirtIOGPU;
+};
 
-typedef struct VhostUserGPU {
+struct VhostUserGPU {
     VirtIOGPUBase parent_obj;
 
     VhostUserBackend *vhost;
@@ -170,7 +169,7 @@ typedef struct VhostUserGPU {
     CharBackend vhost_chr;
     QemuDmaBuf dmabuf[VIRTIO_GPU_MAX_SCANOUTS];
     bool backend_blocked;
-} VhostUserGPU;
+};
 
 extern const GraphicHwOps virtio_gpu_ops;
 
diff --git a/include/hw/virtio/virtio-input.h b/include/hw/virtio/virtio-input.h
index 4fca03e796..5eb9e7745e 100644
--- a/include/hw/virtio/virtio-input.h
+++ b/include/hw/virtio/virtio-input.h
@@ -9,6 +9,7 @@
 
 #include "standard-headers/linux/virtio_ids.h"
 #include "standard-headers/linux/virtio_input.h"
+#include "qom/object.h"
 
 typedef struct virtio_input_absinfo virtio_input_absinfo;
 typedef struct virtio_input_config virtio_input_config;
@@ -18,43 +19,37 @@ typedef struct virtio_input_event virtio_input_event;
 /* qemu internals                                                    */
 
 #define TYPE_VIRTIO_INPUT "virtio-input-device"
-#define VIRTIO_INPUT(obj) \
-        OBJECT_CHECK(VirtIOInput, (obj), TYPE_VIRTIO_INPUT)
+OBJECT_DECLARE_TYPE(VirtIOInput, VirtIOInputClass,
+                    virtio_input, VIRTIO_INPUT)
 #define VIRTIO_INPUT_GET_PARENT_CLASS(obj) \
         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT)
-#define VIRTIO_INPUT_GET_CLASS(obj) \
-        OBJECT_GET_CLASS(VirtIOInputClass, obj, TYPE_VIRTIO_INPUT)
-#define VIRTIO_INPUT_CLASS(klass) \
-        OBJECT_CLASS_CHECK(VirtIOInputClass, klass, TYPE_VIRTIO_INPUT)
 
 #define TYPE_VIRTIO_INPUT_HID "virtio-input-hid-device"
 #define TYPE_VIRTIO_KEYBOARD  "virtio-keyboard-device"
 #define TYPE_VIRTIO_MOUSE     "virtio-mouse-device"
 #define TYPE_VIRTIO_TABLET    "virtio-tablet-device"
 
-#define VIRTIO_INPUT_HID(obj) \
-        OBJECT_CHECK(VirtIOInputHID, (obj), TYPE_VIRTIO_INPUT_HID)
+typedef struct VirtIOInputHID VirtIOInputHID;
+DECLARE_INSTANCE_CHECKER(VirtIOInputHID, VIRTIO_INPUT_HID,
+                         TYPE_VIRTIO_INPUT_HID)
 #define VIRTIO_INPUT_HID_GET_PARENT_CLASS(obj) \
         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HID)
 
 #define TYPE_VIRTIO_INPUT_HOST   "virtio-input-host-device"
-#define VIRTIO_INPUT_HOST(obj) \
-        OBJECT_CHECK(VirtIOInputHost, (obj), TYPE_VIRTIO_INPUT_HOST)
+typedef struct VirtIOInputHost VirtIOInputHost;
+DECLARE_INSTANCE_CHECKER(VirtIOInputHost, VIRTIO_INPUT_HOST,
+                         TYPE_VIRTIO_INPUT_HOST)
 #define VIRTIO_INPUT_HOST_GET_PARENT_CLASS(obj) \
         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HOST)
 
 #define TYPE_VHOST_USER_INPUT   "vhost-user-input"
-#define VHOST_USER_INPUT(obj)                              \
-    OBJECT_CHECK(VHostUserInput, (obj), TYPE_VHOST_USER_INPUT)
+typedef struct VHostUserInput VHostUserInput;
+DECLARE_INSTANCE_CHECKER(VHostUserInput, VHOST_USER_INPUT,
+                         TYPE_VHOST_USER_INPUT)
 #define VHOST_USER_INPUT_GET_PARENT_CLASS(obj)             \
     OBJECT_GET_PARENT_CLASS(obj, TYPE_VHOST_USER_INPUT)
 
-typedef struct VirtIOInput VirtIOInput;
-typedef struct VirtIOInputClass VirtIOInputClass;
 typedef struct VirtIOInputConfig VirtIOInputConfig;
-typedef struct VirtIOInputHID VirtIOInputHID;
-typedef struct VirtIOInputHost VirtIOInputHost;
-typedef struct VHostUserInput VHostUserInput;
 
 struct VirtIOInputConfig {
     virtio_input_config               config;
diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-iommu.h
index 49eb105cd8..ae9dc566c7 100644
--- a/include/hw/virtio/virtio-iommu.h
+++ b/include/hw/virtio/virtio-iommu.h
@@ -23,11 +23,13 @@
 #include "standard-headers/linux/virtio_iommu.h"
 #include "hw/virtio/virtio.h"
 #include "hw/pci/pci.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_IOMMU "virtio-iommu-device"
 #define TYPE_VIRTIO_IOMMU_PCI "virtio-iommu-device-base"
-#define VIRTIO_IOMMU(obj) \
-        OBJECT_CHECK(VirtIOIOMMU, (obj), TYPE_VIRTIO_IOMMU)
+typedef struct VirtIOIOMMU VirtIOIOMMU;
+DECLARE_INSTANCE_CHECKER(VirtIOIOMMU, VIRTIO_IOMMU,
+                         TYPE_VIRTIO_IOMMU)
 
 #define TYPE_VIRTIO_IOMMU_MEMORY_REGION "virtio-iommu-memory-region"
 
@@ -44,7 +46,7 @@ typedef struct IOMMUPciBus {
     IOMMUDevice  *pbdev[]; /* Parent array is sparse, so dynamically alloc */
 } IOMMUPciBus;
 
-typedef struct VirtIOIOMMU {
+struct VirtIOIOMMU {
     VirtIODevice parent_obj;
     VirtQueue *req_vq;
     VirtQueue *event_vq;
@@ -58,6 +60,6 @@ typedef struct VirtIOIOMMU {
     GTree *domains;
     QemuMutex mutex;
     GTree *endpoints;
-} VirtIOIOMMU;
+};
 
 #endif
diff --git a/include/hw/virtio/virtio-mem.h b/include/hw/virtio/virtio-mem.h
index 0778224964..dfc72e14b1 100644
--- a/include/hw/virtio/virtio-mem.h
+++ b/include/hw/virtio/virtio-mem.h
@@ -17,15 +17,12 @@
 #include "hw/virtio/virtio.h"
 #include "qapi/qapi-types-misc.h"
 #include "sysemu/hostmem.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_MEM "virtio-mem"
 
-#define VIRTIO_MEM(obj) \
-        OBJECT_CHECK(VirtIOMEM, (obj), TYPE_VIRTIO_MEM)
-#define VIRTIO_MEM_CLASS(oc) \
-        OBJECT_CLASS_CHECK(VirtIOMEMClass, (oc), TYPE_VIRTIO_MEM)
-#define VIRTIO_MEM_GET_CLASS(obj) \
-        OBJECT_GET_CLASS(VirtIOMEMClass, (obj), TYPE_VIRTIO_MEM)
+OBJECT_DECLARE_TYPE(VirtIOMEM, VirtIOMEMClass,
+                    virtio_mem, VIRTIO_MEM)
 
 #define VIRTIO_MEM_MEMDEV_PROP "memdev"
 #define VIRTIO_MEM_NODE_PROP "node"
@@ -34,7 +31,7 @@
 #define VIRTIO_MEM_BLOCK_SIZE_PROP "block-size"
 #define VIRTIO_MEM_ADDR_PROP "memaddr"
 
-typedef struct VirtIOMEM {
+struct VirtIOMEM {
     VirtIODevice parent_obj;
 
     /* guest -> host request queue */
@@ -70,9 +67,9 @@ typedef struct VirtIOMEM {
 
     /* don't migrate unplugged memory */
     NotifierWithReturn precopy_notifier;
-} VirtIOMEM;
+};
 
-typedef struct VirtIOMEMClass {
+struct VirtIOMEMClass {
     /* private */
     VirtIODevice parent;
 
@@ -81,6 +78,6 @@ typedef struct VirtIOMEMClass {
     MemoryRegion *(*get_memory_region)(VirtIOMEM *vmem, Error **errp);
     void (*add_size_change_notifier)(VirtIOMEM *vmem, Notifier *notifier);
     void (*remove_size_change_notifier)(VirtIOMEM *vmem, Notifier *notifier);
-} VirtIOMEMClass;
+};
 
 #endif
diff --git a/include/hw/virtio/virtio-mmio.h b/include/hw/virtio/virtio-mmio.h
index 7dbfd03dcf..6a1c2c20d4 100644
--- a/include/hw/virtio/virtio-mmio.h
+++ b/include/hw/virtio/virtio-mmio.h
@@ -23,21 +23,20 @@
 #define HW_VIRTIO_MMIO_H
 
 #include "hw/virtio/virtio-bus.h"
+#include "qom/object.h"
 
 /* QOM macros */
 /* virtio-mmio-bus */
 #define TYPE_VIRTIO_MMIO_BUS "virtio-mmio-bus"
-#define VIRTIO_MMIO_BUS(obj) \
-        OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_MMIO_BUS)
-#define VIRTIO_MMIO_BUS_GET_CLASS(obj) \
-        OBJECT_GET_CLASS(VirtioBusClass, (obj), TYPE_VIRTIO_MMIO_BUS)
-#define VIRTIO_MMIO_BUS_CLASS(klass) \
-        OBJECT_CLASS_CHECK(VirtioBusClass, (klass), TYPE_VIRTIO_MMIO_BUS)
+/* This is reusing the VirtioBusState typedef from TYPE_VIRTIO_BUS */
+DECLARE_OBJ_CHECKERS(VirtioBusState, VirtioBusClass,
+                     VIRTIO_MMIO_BUS, TYPE_VIRTIO_MMIO_BUS)
 
 /* virtio-mmio */
 #define TYPE_VIRTIO_MMIO "virtio-mmio"
-#define VIRTIO_MMIO(obj) \
-        OBJECT_CHECK(VirtIOMMIOProxy, (obj), TYPE_VIRTIO_MMIO)
+typedef struct VirtIOMMIOProxy VirtIOMMIOProxy;
+DECLARE_INSTANCE_CHECKER(VirtIOMMIOProxy, VIRTIO_MMIO,
+                         TYPE_VIRTIO_MMIO)
 
 #define VIRT_MAGIC 0x74726976 /* 'virt' */
 #define VIRT_VERSION 2
@@ -52,7 +51,7 @@ typedef struct VirtIOMMIOQueue {
     uint32_t used[2];
 } VirtIOMMIOQueue;
 
-typedef struct {
+struct VirtIOMMIOProxy {
     /* Generic */
     SysBusDevice parent_obj;
     MemoryRegion iomem;
@@ -68,6 +67,6 @@ typedef struct {
     /* Fields only used for non-legacy (v2) devices */
     uint32_t guest_features[2];
     VirtIOMMIOQueue vqs[VIRTIO_QUEUE_MAX];
-} VirtIOMMIOProxy;
+};
 
 #endif
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
index a45ef8278e..929ed232dd 100644
--- a/include/hw/virtio/virtio-net.h
+++ b/include/hw/virtio/virtio-net.h
@@ -19,10 +19,12 @@
 #include "hw/virtio/virtio.h"
 #include "net/announce.h"
 #include "qemu/option_int.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_NET "virtio-net-device"
-#define VIRTIO_NET(obj) \
-        OBJECT_CHECK(VirtIONet, (obj), TYPE_VIRTIO_NET)
+typedef struct VirtIONet VirtIONet;
+DECLARE_INSTANCE_CHECKER(VirtIONet, VIRTIO_NET,
+                         TYPE_VIRTIO_NET)
 
 #define TX_TIMER_INTERVAL 150000 /* 150 us */
 
@@ -109,7 +111,6 @@ typedef struct VirtioNetRscSeg {
     NetClientState *nc;
 } VirtioNetRscSeg;
 
-typedef struct VirtIONet VirtIONet;
 
 /* Chain is divided by protocol(ipv4/v6) and NetClientInfo */
 typedef struct VirtioNetRscChain {
diff --git a/include/hw/virtio/virtio-pmem.h b/include/hw/virtio/virtio-pmem.h
index 33f1999320..56df9a03ce 100644
--- a/include/hw/virtio/virtio-pmem.h
+++ b/include/hw/virtio/virtio-pmem.h
@@ -16,34 +16,31 @@
 
 #include "hw/virtio/virtio.h"
 #include "qapi/qapi-types-misc.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_PMEM "virtio-pmem"
 
-#define VIRTIO_PMEM(obj) \
-        OBJECT_CHECK(VirtIOPMEM, (obj), TYPE_VIRTIO_PMEM)
-#define VIRTIO_PMEM_CLASS(oc) \
-        OBJECT_CLASS_CHECK(VirtIOPMEMClass, (oc), TYPE_VIRTIO_PMEM)
-#define VIRTIO_PMEM_GET_CLASS(obj) \
-        OBJECT_GET_CLASS(VirtIOPMEMClass, (obj), TYPE_VIRTIO_PMEM)
+OBJECT_DECLARE_TYPE(VirtIOPMEM, VirtIOPMEMClass,
+                    virtio_pmem, VIRTIO_PMEM)
 
 #define VIRTIO_PMEM_ADDR_PROP "memaddr"
 #define VIRTIO_PMEM_MEMDEV_PROP "memdev"
 
-typedef struct VirtIOPMEM {
+struct VirtIOPMEM {
     VirtIODevice parent_obj;
 
     VirtQueue *rq_vq;
     uint64_t start;
     HostMemoryBackend *memdev;
-} VirtIOPMEM;
+};
 
-typedef struct VirtIOPMEMClass {
+struct VirtIOPMEMClass {
     /* private */
     VirtIODevice parent;
 
     /* public */
     void (*fill_device_info)(const VirtIOPMEM *pmem, VirtioPMEMDeviceInfo *vi);
     MemoryRegion *(*get_memory_region)(VirtIOPMEM *pmem, Error **errp);
-} VirtIOPMEMClass;
+};
 
 #endif
diff --git a/include/hw/virtio/virtio-rng.h b/include/hw/virtio/virtio-rng.h
index bd05d734b8..3671c9ba19 100644
--- a/include/hw/virtio/virtio-rng.h
+++ b/include/hw/virtio/virtio-rng.h
@@ -15,10 +15,12 @@
 #include "hw/virtio/virtio.h"
 #include "sysemu/rng.h"
 #include "standard-headers/linux/virtio_rng.h"
+#include "qom/object.h"
 
 #define TYPE_VIRTIO_RNG "virtio-rng-device"
-#define VIRTIO_RNG(obj) \
-        OBJECT_CHECK(VirtIORNG, (obj), TYPE_VIRTIO_RNG)
+typedef struct VirtIORNG VirtIORNG;
+DECLARE_INSTANCE_CHECKER(VirtIORNG, VIRTIO_RNG,
+                         TYPE_VIRTIO_RNG)
 #define VIRTIO_RNG_GET_PARENT_CLASS(obj) \
         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_RNG)
 
@@ -28,7 +30,7 @@ struct VirtIORNGConf {
     uint32_t period_ms;
 };
 
-typedef struct VirtIORNG {
+struct VirtIORNG {
     VirtIODevice parent_obj;
 
     /* Only one vq - guest puts buffer(s) on it when it needs entropy */
@@ -46,6 +48,6 @@ typedef struct VirtIORNG {
     bool activate_timer;
 
     VMChangeStateEntry *vmstate;
-} VirtIORNG;
+};
 
 #endif
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
index c0b8e4dd7e..9a8a06fdd1 100644
--- a/include/hw/virtio/virtio-scsi.h
+++ b/include/hw/virtio/virtio-scsi.h
@@ -13,6 +13,7 @@
 
 #ifndef QEMU_VIRTIO_SCSI_H
 #define QEMU_VIRTIO_SCSI_H
+#include "qom/object.h"
 
 /* Override CDB/sense data size: they are dynamic (guest controlled) in QEMU */
 #define VIRTIO_SCSI_CDB_SIZE 0
@@ -25,12 +26,14 @@
 #include "sysemu/iothread.h"
 
 #define TYPE_VIRTIO_SCSI_COMMON "virtio-scsi-common"
-#define VIRTIO_SCSI_COMMON(obj) \
-        OBJECT_CHECK(VirtIOSCSICommon, (obj), TYPE_VIRTIO_SCSI_COMMON)
+typedef struct VirtIOSCSICommon VirtIOSCSICommon;
+DECLARE_INSTANCE_CHECKER(VirtIOSCSICommon, VIRTIO_SCSI_COMMON,
+                         TYPE_VIRTIO_SCSI_COMMON)
 
 #define TYPE_VIRTIO_SCSI "virtio-scsi-device"
-#define VIRTIO_SCSI(obj) \
-        OBJECT_CHECK(VirtIOSCSI, (obj), TYPE_VIRTIO_SCSI)
+typedef struct VirtIOSCSI VirtIOSCSI;
+DECLARE_INSTANCE_CHECKER(VirtIOSCSI, VIRTIO_SCSI,
+                         TYPE_VIRTIO_SCSI)
 
 #define VIRTIO_SCSI_MAX_CHANNEL 0
 #define VIRTIO_SCSI_MAX_TARGET  255
@@ -67,7 +70,7 @@ struct VirtIOSCSIConf {
 
 struct VirtIOSCSI;
 
-typedef struct VirtIOSCSICommon {
+struct VirtIOSCSICommon {
     VirtIODevice parent_obj;
     VirtIOSCSIConf conf;
 
@@ -76,9 +79,9 @@ typedef struct VirtIOSCSICommon {
     VirtQueue *ctrl_vq;
     VirtQueue *event_vq;
     VirtQueue **cmd_vqs;
-} VirtIOSCSICommon;
+};
 
-typedef struct VirtIOSCSI {
+struct VirtIOSCSI {
     VirtIOSCSICommon parent_obj;
 
     SCSIBus bus;
@@ -93,7 +96,7 @@ typedef struct VirtIOSCSI {
     bool dataplane_stopping;
     bool dataplane_fenced;
     uint32_t host_features;
-} VirtIOSCSI;
+};
 
 typedef struct VirtIOSCSIReq {
     /* Note:
diff --git a/include/hw/virtio/virtio-serial.h b/include/hw/virtio/virtio-serial.h
index 448615a6b3..0b7f963611 100644
--- a/include/hw/virtio/virtio-serial.h
+++ b/include/hw/virtio/virtio-serial.h
@@ -18,6 +18,7 @@
 
 #include "standard-headers/linux/virtio_console.h"
 #include "hw/virtio/virtio.h"
+#include "qom/object.h"
 
 struct virtio_serial_conf {
     /* Max. number of ports we can have for a virtio-serial device */
@@ -25,23 +26,18 @@ struct virtio_serial_conf {
 };
 
 #define TYPE_VIRTIO_SERIAL_PORT "virtio-serial-port"
-#define VIRTIO_SERIAL_PORT(obj) \
-     OBJECT_CHECK(VirtIOSerialPort, (obj), TYPE_VIRTIO_SERIAL_PORT)
-#define VIRTIO_SERIAL_PORT_CLASS(klass) \
-     OBJECT_CLASS_CHECK(VirtIOSerialPortClass, (klass), TYPE_VIRTIO_SERIAL_PORT)
-#define VIRTIO_SERIAL_PORT_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(VirtIOSerialPortClass, (obj), TYPE_VIRTIO_SERIAL_PORT)
+OBJECT_DECLARE_TYPE(VirtIOSerialPort, VirtIOSerialPortClass,
+                    virtio_serial_port, VIRTIO_SERIAL_PORT)
 
 typedef struct VirtIOSerial VirtIOSerial;
 
 #define TYPE_VIRTIO_SERIAL_BUS "virtio-serial-bus"
 typedef struct VirtIOSerialBus VirtIOSerialBus;
-#define VIRTIO_SERIAL_BUS(obj) \
-      OBJECT_CHECK(VirtIOSerialBus, (obj), TYPE_VIRTIO_SERIAL_BUS)
+DECLARE_INSTANCE_CHECKER(VirtIOSerialBus, VIRTIO_SERIAL_BUS,
+                         TYPE_VIRTIO_SERIAL_BUS)
 
-typedef struct VirtIOSerialPort VirtIOSerialPort;
 
-typedef struct VirtIOSerialPortClass {
+struct VirtIOSerialPortClass {
     DeviceClass parent_class;
 
     /* Is this a device that binds with hvc in the guest? */
@@ -86,7 +82,7 @@ typedef struct VirtIOSerialPortClass {
      */
     ssize_t (*have_data)(VirtIOSerialPort *port, const uint8_t *buf,
                          ssize_t len);
-} VirtIOSerialPortClass;
+};
 
 /*
  * This is the state that's shared between all the ports.  Some of the
@@ -228,7 +224,7 @@ size_t virtio_serial_guest_ready(VirtIOSerialPort *port);
 void virtio_serial_throttle_port(VirtIOSerialPort *port, bool throttle);
 
 #define TYPE_VIRTIO_SERIAL "virtio-serial-device"
-#define VIRTIO_SERIAL(obj) \
-        OBJECT_CHECK(VirtIOSerial, (obj), TYPE_VIRTIO_SERIAL)
+DECLARE_INSTANCE_CHECKER(VirtIOSerial, VIRTIO_SERIAL,
+                         TYPE_VIRTIO_SERIAL)
 
 #endif
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index e424df12cf..807280451b 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -21,6 +21,7 @@
 #include "qemu/event_notifier.h"
 #include "standard-headers/linux/virtio_config.h"
 #include "standard-headers/linux/virtio_ring.h"
+#include "qom/object.h"
 
 /* A guest should never accept this.  It implies negotiation is broken. */
 #define VIRTIO_F_BAD_FEATURE		30
@@ -67,12 +68,9 @@ typedef struct VirtQueueElement
 #define VIRTIO_NO_VECTOR 0xffff
 
 #define TYPE_VIRTIO_DEVICE "virtio-device"
-#define VIRTIO_DEVICE_GET_CLASS(obj) \
-        OBJECT_GET_CLASS(VirtioDeviceClass, obj, TYPE_VIRTIO_DEVICE)
-#define VIRTIO_DEVICE_CLASS(klass) \
-        OBJECT_CLASS_CHECK(VirtioDeviceClass, klass, TYPE_VIRTIO_DEVICE)
-#define VIRTIO_DEVICE(obj) \
-        OBJECT_CHECK(VirtIODevice, (obj), TYPE_VIRTIO_DEVICE)
+typedef struct VirtioDeviceClass VirtioDeviceClass;
+DECLARE_OBJ_CHECKERS(VirtIODevice, VirtioDeviceClass,
+                     VIRTIO_DEVICE, TYPE_VIRTIO_DEVICE)
 
 enum virtio_device_endian {
     VIRTIO_DEVICE_ENDIAN_UNKNOWN,
@@ -113,7 +111,7 @@ struct VirtIODevice
     QLIST_HEAD(, VirtQueue) *vector_queues;
 };
 
-typedef struct VirtioDeviceClass {
+struct VirtioDeviceClass {
     /*< private >*/
     DeviceClass parent;
     /*< public >*/
@@ -163,7 +161,7 @@ typedef struct VirtioDeviceClass {
     int (*post_load)(VirtIODevice *vdev);
     const VMStateDescription *vmsd;
     bool (*primary_unplug_pending)(void *opaque);
-} VirtioDeviceClass;
+};
 
 void virtio_instance_init_common(Object *proxy_obj, void *data,
                                  size_t vdev_size, const char *vdev_name);
diff --git a/include/hw/vmstate-if.h b/include/hw/vmstate-if.h
index 8ff7f0f292..52df571d17 100644
--- a/include/hw/vmstate-if.h
+++ b/include/hw/vmstate-if.h
@@ -13,20 +13,19 @@
 
 #define TYPE_VMSTATE_IF "vmstate-if"
 
-#define VMSTATE_IF_CLASS(klass)                                     \
-    OBJECT_CLASS_CHECK(VMStateIfClass, (klass), TYPE_VMSTATE_IF)
-#define VMSTATE_IF_GET_CLASS(obj)                           \
-    OBJECT_GET_CLASS(VMStateIfClass, (obj), TYPE_VMSTATE_IF)
+typedef struct VMStateIfClass VMStateIfClass;
+DECLARE_CLASS_CHECKERS(VMStateIfClass, VMSTATE_IF,
+                       TYPE_VMSTATE_IF)
 #define VMSTATE_IF(obj)                             \
     INTERFACE_CHECK(VMStateIf, (obj), TYPE_VMSTATE_IF)
 
 typedef struct VMStateIf VMStateIf;
 
-typedef struct VMStateIfClass {
+struct VMStateIfClass {
     InterfaceClass parent_class;
 
     char * (*get_id)(VMStateIf *obj);
-} VMStateIfClass;
+};
 
 static inline char *vmstate_if_get_id(VMStateIf *vmif)
 {
diff --git a/include/hw/watchdog/cmsdk-apb-watchdog.h b/include/hw/watchdog/cmsdk-apb-watchdog.h
index 6ae9531370..63f4becf86 100644
--- a/include/hw/watchdog/cmsdk-apb-watchdog.h
+++ b/include/hw/watchdog/cmsdk-apb-watchdog.h
@@ -33,10 +33,12 @@
 
 #include "hw/sysbus.h"
 #include "hw/ptimer.h"
+#include "qom/object.h"
 
 #define TYPE_CMSDK_APB_WATCHDOG "cmsdk-apb-watchdog"
-#define CMSDK_APB_WATCHDOG(obj) OBJECT_CHECK(CMSDKAPBWatchdog, (obj), \
-                                              TYPE_CMSDK_APB_WATCHDOG)
+typedef struct CMSDKAPBWatchdog CMSDKAPBWatchdog;
+DECLARE_INSTANCE_CHECKER(CMSDKAPBWatchdog, CMSDK_APB_WATCHDOG,
+                         TYPE_CMSDK_APB_WATCHDOG)
 
 /*
  * This shares the same struct (and cast macro) as the base
@@ -44,7 +46,7 @@
  */
 #define TYPE_LUMINARY_WATCHDOG "luminary-watchdog"
 
-typedef struct CMSDKAPBWatchdog {
+struct CMSDKAPBWatchdog {
     /*< private >*/
     SysBusDevice parent_obj;
 
@@ -62,6 +64,6 @@ typedef struct CMSDKAPBWatchdog {
     uint32_t itop;
     uint32_t resetstatus;
     const uint32_t *id;
-} CMSDKAPBWatchdog;
+};
 
 #endif
diff --git a/include/hw/watchdog/wdt_aspeed.h b/include/hw/watchdog/wdt_aspeed.h
index 819c22993a..2ca1eb5432 100644
--- a/include/hw/watchdog/wdt_aspeed.h
+++ b/include/hw/watchdog/wdt_aspeed.h
@@ -12,17 +12,20 @@
 
 #include "hw/misc/aspeed_scu.h"
 #include "hw/sysbus.h"
+#include "qom/object.h"
 
 #define TYPE_ASPEED_WDT "aspeed.wdt"
-#define ASPEED_WDT(obj) \
-    OBJECT_CHECK(AspeedWDTState, (obj), TYPE_ASPEED_WDT)
+typedef struct AspeedWDTClass AspeedWDTClass;
+typedef struct AspeedWDTState AspeedWDTState;
+DECLARE_OBJ_CHECKERS(AspeedWDTState, AspeedWDTClass,
+                     ASPEED_WDT, TYPE_ASPEED_WDT)
 #define TYPE_ASPEED_2400_WDT TYPE_ASPEED_WDT "-ast2400"
 #define TYPE_ASPEED_2500_WDT TYPE_ASPEED_WDT "-ast2500"
 #define TYPE_ASPEED_2600_WDT TYPE_ASPEED_WDT "-ast2600"
 
 #define ASPEED_WDT_REGS_MAX        (0x20 / 4)
 
-typedef struct AspeedWDTState {
+struct AspeedWDTState {
     /*< private >*/
     SysBusDevice parent_obj;
     QEMUTimer *timer;
@@ -33,14 +36,10 @@ typedef struct AspeedWDTState {
 
     AspeedSCUState *scu;
     uint32_t pclk_freq;
-} AspeedWDTState;
+};
 
-#define ASPEED_WDT_CLASS(klass) \
-     OBJECT_CLASS_CHECK(AspeedWDTClass, (klass), TYPE_ASPEED_WDT)
-#define ASPEED_WDT_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(AspeedWDTClass, (obj), TYPE_ASPEED_WDT)
 
-typedef struct AspeedWDTClass {
+struct AspeedWDTClass {
     SysBusDeviceClass parent_class;
 
     uint32_t offset;
@@ -48,6 +47,6 @@ typedef struct AspeedWDTClass {
     uint32_t reset_ctrl_reg;
     void (*reset_pulse)(AspeedWDTState *s, uint32_t property);
     void (*wdt_reload)(AspeedWDTState *s);
-}  AspeedWDTClass;
+};
 
 #endif /* WDT_ASPEED_H */
diff --git a/include/hw/watchdog/wdt_diag288.h b/include/hw/watchdog/wdt_diag288.h
index 19d83a0937..f72c1d3318 100644
--- a/include/hw/watchdog/wdt_diag288.h
+++ b/include/hw/watchdog/wdt_diag288.h
@@ -2,35 +2,34 @@
 #define WDT_DIAG288_H
 
 #include "hw/qdev-core.h"
+#include "qom/object.h"
 
 #define TYPE_WDT_DIAG288 "diag288"
-#define DIAG288(obj) \
-    OBJECT_CHECK(DIAG288State, (obj), TYPE_WDT_DIAG288)
-#define DIAG288_CLASS(klass) \
-    OBJECT_CLASS_CHECK(DIAG288Class, (klass), TYPE_WDT_DIAG288)
-#define DIAG288_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(DIAG288Class, (obj), TYPE_WDT_DIAG288)
+typedef struct DIAG288Class DIAG288Class;
+typedef struct DIAG288State DIAG288State;
+DECLARE_OBJ_CHECKERS(DIAG288State, DIAG288Class,
+                     DIAG288, TYPE_WDT_DIAG288)
 
 #define WDT_DIAG288_INIT      0
 #define WDT_DIAG288_CHANGE    1
 #define WDT_DIAG288_CANCEL    2
 
-typedef struct DIAG288State {
+struct DIAG288State {
     /*< private >*/
     DeviceState parent_obj;
     QEMUTimer *timer;
     bool enabled;
 
     /*< public >*/
-} DIAG288State;
+};
 
-typedef struct DIAG288Class {
+struct DIAG288Class {
     /*< private >*/
     DeviceClass parent_class;
 
     /*< public >*/
     int (*handle_timer)(DIAG288State *dev,
                         uint64_t func, uint64_t timeout);
-} DIAG288Class;
+};
 
 #endif /* WDT_DIAG288_H */
diff --git a/include/hw/watchdog/wdt_imx2.h b/include/hw/watchdog/wdt_imx2.h
index f9af6be4b6..7665d93640 100644
--- a/include/hw/watchdog/wdt_imx2.h
+++ b/include/hw/watchdog/wdt_imx2.h
@@ -16,9 +16,12 @@
 #include "hw/sysbus.h"
 #include "hw/irq.h"
 #include "hw/ptimer.h"
+#include "qom/object.h"
 
 #define TYPE_IMX2_WDT "imx2.wdt"
-#define IMX2_WDT(obj) OBJECT_CHECK(IMX2WdtState, (obj), TYPE_IMX2_WDT)
+typedef struct IMX2WdtState IMX2WdtState;
+DECLARE_INSTANCE_CHECKER(IMX2WdtState, IMX2_WDT,
+                         TYPE_IMX2_WDT)
 
 enum IMX2WdtRegisters {
     IMX2_WDT_WCR  = 0x0000, /* Control Register */
@@ -62,7 +65,7 @@ enum IMX2WdtRegisters {
 /* Misc Control Register definitions */
 #define IMX2_WDT_WMCR_PDE       BIT(0)      /* Power-Down Enable */
 
-typedef struct IMX2WdtState {
+struct IMX2WdtState {
     /* <private> */
     SysBusDevice parent_obj;
 
@@ -85,6 +88,6 @@ typedef struct IMX2WdtState {
     bool wcr_locked;            /* affects WDZST, WDBG, and WDW */
     bool wcr_wde_locked;        /* affects WDE */
     bool wcr_wdt_locked;        /* affects WDT (never cleared) */
-} IMX2WdtState;
+};
 
 #endif /* IMX2_WDT_H */
diff --git a/include/hw/xen/xen-block.h b/include/hw/xen/xen-block.h
index 2cd2fc2701..8ff5421dc3 100644
--- a/include/hw/xen/xen-block.h
+++ b/include/hw/xen/xen-block.h
@@ -12,6 +12,7 @@
 #include "hw/block/block.h"
 #include "hw/block/dataplane/xen-block.h"
 #include "sysemu/iothread.h"
+#include "qom/object.h"
 
 typedef enum XenBlockVdevType {
     XEN_BLOCK_VDEV_TYPE_INVALID,
@@ -46,7 +47,7 @@ typedef struct XenBlockIOThread {
     char *id;
 } XenBlockIOThread;
 
-typedef struct XenBlockDevice {
+struct XenBlockDevice {
     XenDevice xendev;
     XenBlockProperties props;
     const char *device_type;
@@ -54,41 +55,41 @@ typedef struct XenBlockDevice {
     XenBlockDataPlane *dataplane;
     XenBlockDrive *drive;
     XenBlockIOThread *iothread;
-} XenBlockDevice;
+};
+typedef struct XenBlockDevice XenBlockDevice;
 
 typedef void (*XenBlockDeviceRealize)(XenBlockDevice *blockdev, Error **errp);
 typedef void (*XenBlockDeviceUnrealize)(XenBlockDevice *blockdev);
 
-typedef struct XenBlockDeviceClass {
+struct XenBlockDeviceClass {
     /*< private >*/
     XenDeviceClass parent_class;
     /*< public >*/
     XenBlockDeviceRealize realize;
     XenBlockDeviceUnrealize unrealize;
-} XenBlockDeviceClass;
+};
+typedef struct XenBlockDeviceClass XenBlockDeviceClass;
 
 #define TYPE_XEN_BLOCK_DEVICE  "xen-block"
-#define XEN_BLOCK_DEVICE(obj) \
-     OBJECT_CHECK(XenBlockDevice, (obj), TYPE_XEN_BLOCK_DEVICE)
-#define XEN_BLOCK_DEVICE_CLASS(class) \
-     OBJECT_CLASS_CHECK(XenBlockDeviceClass, (class), TYPE_XEN_BLOCK_DEVICE)
-#define XEN_BLOCK_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(XenBlockDeviceClass, (obj), TYPE_XEN_BLOCK_DEVICE)
-
-typedef struct XenDiskDevice {
+DECLARE_OBJ_CHECKERS(XenBlockDevice, XenBlockDeviceClass,
+                     XEN_BLOCK_DEVICE, TYPE_XEN_BLOCK_DEVICE)
+
+struct XenDiskDevice {
     XenBlockDevice blockdev;
-} XenDiskDevice;
+};
+typedef struct XenDiskDevice XenDiskDevice;
 
 #define TYPE_XEN_DISK_DEVICE  "xen-disk"
-#define XEN_DISK_DEVICE(obj) \
-     OBJECT_CHECK(XenDiskDevice, (obj), TYPE_XEN_DISK_DEVICE)
+DECLARE_INSTANCE_CHECKER(XenDiskDevice, XEN_DISK_DEVICE,
+                         TYPE_XEN_DISK_DEVICE)
 
-typedef struct XenCDRomDevice {
+struct XenCDRomDevice {
     XenBlockDevice blockdev;
-} XenCDRomDevice;
+};
+typedef struct XenCDRomDevice XenCDRomDevice;
 
 #define TYPE_XEN_CDROM_DEVICE  "xen-cdrom"
-#define XEN_CDROM_DEVICE(obj) \
-     OBJECT_CHECK(XenCDRomDevice, (obj), TYPE_XEN_CDROM_DEVICE)
+DECLARE_INSTANCE_CHECKER(XenCDRomDevice, XEN_CDROM_DEVICE,
+                         TYPE_XEN_CDROM_DEVICE)
 
 #endif /* HW_XEN_BLOCK_H */
diff --git a/include/hw/xen/xen-bus.h b/include/hw/xen/xen-bus.h
index 4ec0bb072f..e0e67505b8 100644
--- a/include/hw/xen/xen-bus.h
+++ b/include/hw/xen/xen-bus.h
@@ -11,6 +11,7 @@
 #include "hw/xen/xen_common.h"
 #include "hw/sysbus.h"
 #include "qemu/notify.h"
+#include "qom/object.h"
 
 typedef void (*XenWatchHandler)(void *opaque);
 
@@ -18,7 +19,7 @@ typedef struct XenWatchList XenWatchList;
 typedef struct XenWatch XenWatch;
 typedef struct XenEventChannel XenEventChannel;
 
-typedef struct XenDevice {
+struct XenDevice {
     DeviceState qdev;
     domid_t frontend_id;
     char *name;
@@ -35,7 +36,8 @@ typedef struct XenDevice {
     bool inactive;
     QLIST_HEAD(, XenEventChannel) event_channels;
     QLIST_ENTRY(XenDevice) list;
-} XenDevice;
+};
+typedef struct XenDevice XenDevice;
 
 typedef char *(*XenDeviceGetName)(XenDevice *xendev, Error **errp);
 typedef void (*XenDeviceRealize)(XenDevice *xendev, Error **errp);
@@ -44,7 +46,7 @@ typedef void (*XenDeviceFrontendChanged)(XenDevice *xendev,
                                          Error **errp);
 typedef void (*XenDeviceUnrealize)(XenDevice *xendev);
 
-typedef struct XenDeviceClass {
+struct XenDeviceClass {
     /*< private >*/
     DeviceClass parent_class;
     /*< public >*/
@@ -54,37 +56,30 @@ typedef struct XenDeviceClass {
     XenDeviceRealize realize;
     XenDeviceFrontendChanged frontend_changed;
     XenDeviceUnrealize unrealize;
-} XenDeviceClass;
+};
+typedef struct XenDeviceClass XenDeviceClass;
 
 #define TYPE_XEN_DEVICE "xen-device"
-#define XEN_DEVICE(obj) \
-     OBJECT_CHECK(XenDevice, (obj), TYPE_XEN_DEVICE)
-#define XEN_DEVICE_CLASS(class) \
-     OBJECT_CLASS_CHECK(XenDeviceClass, (class), TYPE_XEN_DEVICE)
-#define XEN_DEVICE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(XenDeviceClass, (obj), TYPE_XEN_DEVICE)
-
-typedef struct XenBus {
+DECLARE_OBJ_CHECKERS(XenDevice, XenDeviceClass,
+                     XEN_DEVICE, TYPE_XEN_DEVICE)
+
+struct XenBus {
     BusState qbus;
     domid_t backend_id;
     struct xs_handle *xsh;
     XenWatchList *watch_list;
     XenWatch *backend_watch;
     QLIST_HEAD(, XenDevice) inactive_devices;
-} XenBus;
+};
 
-typedef struct XenBusClass {
+struct XenBusClass {
     /*< private >*/
     BusClass parent_class;
-} XenBusClass;
+};
 
 #define TYPE_XEN_BUS "xen-bus"
-#define XEN_BUS(obj) \
-    OBJECT_CHECK(XenBus, (obj), TYPE_XEN_BUS)
-#define XEN_BUS_CLASS(class) \
-    OBJECT_CLASS_CHECK(XenBusClass, (class), TYPE_XEN_BUS)
-#define XEN_BUS_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(XenBusClass, (obj), TYPE_XEN_BUS)
+OBJECT_DECLARE_TYPE(XenBus, XenBusClass,
+                    xen_bus, XEN_BUS)
 
 void xen_bus_init(void);
 
diff --git a/include/hw/xen/xen-legacy-backend.h b/include/hw/xen/xen-legacy-backend.h
index 704bc7852b..ba7a3c59bb 100644
--- a/include/hw/xen/xen-legacy-backend.h
+++ b/include/hw/xen/xen-legacy-backend.h
@@ -4,14 +4,15 @@
 #include "hw/xen/xen_common.h"
 #include "hw/xen/xen_pvdev.h"
 #include "net/net.h"
+#include "qom/object.h"
 
 #define TYPE_XENSYSDEV "xen-sysdev"
 #define TYPE_XENSYSBUS "xen-sysbus"
 #define TYPE_XENBACKEND "xen-backend"
 
 typedef struct XenLegacyDevice XenLegacyDevice;
-#define XENBACKEND_DEVICE(obj) \
-    OBJECT_CHECK(XenLegacyDevice, (obj), TYPE_XENBACKEND)
+DECLARE_INSTANCE_CHECKER(XenLegacyDevice, XENBACKEND_DEVICE,
+                         TYPE_XENBACKEND)
 
 /* variables */
 extern struct xs_handle *xenstore;
diff --git a/include/io/channel-buffer.h b/include/io/channel-buffer.h
index 3f4b3f29e1..89632ef437 100644
--- a/include/io/channel-buffer.h
+++ b/include/io/channel-buffer.h
@@ -22,12 +22,13 @@
 #define QIO_CHANNEL_BUFFER_H
 
 #include "io/channel.h"
+#include "qom/object.h"
 
 #define TYPE_QIO_CHANNEL_BUFFER "qio-channel-buffer"
-#define QIO_CHANNEL_BUFFER(obj)                                     \
-    OBJECT_CHECK(QIOChannelBuffer, (obj), TYPE_QIO_CHANNEL_BUFFER)
-
 typedef struct QIOChannelBuffer QIOChannelBuffer;
+DECLARE_INSTANCE_CHECKER(QIOChannelBuffer, QIO_CHANNEL_BUFFER,
+                         TYPE_QIO_CHANNEL_BUFFER)
+
 
 /**
  * QIOChannelBuffer:
diff --git a/include/io/channel-command.h b/include/io/channel-command.h
index 336d47fa5c..4b64ff011b 100644
--- a/include/io/channel-command.h
+++ b/include/io/channel-command.h
@@ -22,12 +22,13 @@
 #define QIO_CHANNEL_COMMAND_H
 
 #include "io/channel.h"
+#include "qom/object.h"
 
 #define TYPE_QIO_CHANNEL_COMMAND "qio-channel-command"
-#define QIO_CHANNEL_COMMAND(obj)                                     \
-    OBJECT_CHECK(QIOChannelCommand, (obj), TYPE_QIO_CHANNEL_COMMAND)
-
 typedef struct QIOChannelCommand QIOChannelCommand;
+DECLARE_INSTANCE_CHECKER(QIOChannelCommand, QIO_CHANNEL_COMMAND,
+                         TYPE_QIO_CHANNEL_COMMAND)
+
 
 
 /**
diff --git a/include/io/channel-file.h b/include/io/channel-file.h
index ebfe54ec70..c6caf179d9 100644
--- a/include/io/channel-file.h
+++ b/include/io/channel-file.h
@@ -22,12 +22,13 @@
 #define QIO_CHANNEL_FILE_H
 
 #include "io/channel.h"
+#include "qom/object.h"
 
 #define TYPE_QIO_CHANNEL_FILE "qio-channel-file"
-#define QIO_CHANNEL_FILE(obj)                                     \
-    OBJECT_CHECK(QIOChannelFile, (obj), TYPE_QIO_CHANNEL_FILE)
-
 typedef struct QIOChannelFile QIOChannelFile;
+DECLARE_INSTANCE_CHECKER(QIOChannelFile, QIO_CHANNEL_FILE,
+                         TYPE_QIO_CHANNEL_FILE)
+
 
 /**
  * QIOChannelFile:
diff --git a/include/io/channel-socket.h b/include/io/channel-socket.h
index 777ff5954e..62e3e2e970 100644
--- a/include/io/channel-socket.h
+++ b/include/io/channel-socket.h
@@ -24,12 +24,13 @@
 #include "io/channel.h"
 #include "io/task.h"
 #include "qemu/sockets.h"
+#include "qom/object.h"
 
 #define TYPE_QIO_CHANNEL_SOCKET "qio-channel-socket"
-#define QIO_CHANNEL_SOCKET(obj)                                     \
-    OBJECT_CHECK(QIOChannelSocket, (obj), TYPE_QIO_CHANNEL_SOCKET)
-
 typedef struct QIOChannelSocket QIOChannelSocket;
+DECLARE_INSTANCE_CHECKER(QIOChannelSocket, QIO_CHANNEL_SOCKET,
+                         TYPE_QIO_CHANNEL_SOCKET)
+
 
 /**
  * QIOChannelSocket:
diff --git a/include/io/channel-tls.h b/include/io/channel-tls.h
index fdbdf12feb..036bf54195 100644
--- a/include/io/channel-tls.h
+++ b/include/io/channel-tls.h
@@ -24,12 +24,13 @@
 #include "io/channel.h"
 #include "io/task.h"
 #include "crypto/tlssession.h"
+#include "qom/object.h"
 
 #define TYPE_QIO_CHANNEL_TLS "qio-channel-tls"
-#define QIO_CHANNEL_TLS(obj)                                     \
-    OBJECT_CHECK(QIOChannelTLS, (obj), TYPE_QIO_CHANNEL_TLS)
-
 typedef struct QIOChannelTLS QIOChannelTLS;
+DECLARE_INSTANCE_CHECKER(QIOChannelTLS, QIO_CHANNEL_TLS,
+                         TYPE_QIO_CHANNEL_TLS)
+
 
 /**
  * QIOChannelTLS
diff --git a/include/io/channel-websock.h b/include/io/channel-websock.h
index a7e5e92e61..b07eddabe1 100644
--- a/include/io/channel-websock.h
+++ b/include/io/channel-websock.h
@@ -24,12 +24,13 @@
 #include "io/channel.h"
 #include "qemu/buffer.h"
 #include "io/task.h"
+#include "qom/object.h"
 
 #define TYPE_QIO_CHANNEL_WEBSOCK "qio-channel-websock"
-#define QIO_CHANNEL_WEBSOCK(obj)                                     \
-    OBJECT_CHECK(QIOChannelWebsock, (obj), TYPE_QIO_CHANNEL_WEBSOCK)
-
 typedef struct QIOChannelWebsock QIOChannelWebsock;
+DECLARE_INSTANCE_CHECKER(QIOChannelWebsock, QIO_CHANNEL_WEBSOCK,
+                         TYPE_QIO_CHANNEL_WEBSOCK)
+
 typedef union QIOChannelWebsockMask QIOChannelWebsockMask;
 
 union QIOChannelWebsockMask {
diff --git a/include/io/channel.h b/include/io/channel.h
index d4557f0930..245479548a 100644
--- a/include/io/channel.h
+++ b/include/io/channel.h
@@ -26,15 +26,9 @@
 #include "block/aio.h"
 
 #define TYPE_QIO_CHANNEL "qio-channel"
-#define QIO_CHANNEL(obj)                                    \
-    OBJECT_CHECK(QIOChannel, (obj), TYPE_QIO_CHANNEL)
-#define QIO_CHANNEL_CLASS(klass)                                    \
-    OBJECT_CLASS_CHECK(QIOChannelClass, klass, TYPE_QIO_CHANNEL)
-#define QIO_CHANNEL_GET_CLASS(obj)                                  \
-    OBJECT_GET_CLASS(QIOChannelClass, obj, TYPE_QIO_CHANNEL)
-
-typedef struct QIOChannel QIOChannel;
-typedef struct QIOChannelClass QIOChannelClass;
+OBJECT_DECLARE_TYPE(QIOChannel, QIOChannelClass,
+                    qio_channel, QIO_CHANNEL)
+
 
 #define QIO_CHANNEL_ERR_BLOCK -2
 
diff --git a/include/io/dns-resolver.h b/include/io/dns-resolver.h
index a475e978c8..e248fba5bd 100644
--- a/include/io/dns-resolver.h
+++ b/include/io/dns-resolver.h
@@ -26,15 +26,9 @@
 #include "io/task.h"
 
 #define TYPE_QIO_DNS_RESOLVER "qio-dns-resolver"
-#define QIO_DNS_RESOLVER(obj)                                    \
-    OBJECT_CHECK(QIODNSResolver, (obj), TYPE_QIO_DNS_RESOLVER)
-#define QIO_DNS_RESOLVER_CLASS(klass)                                    \
-    OBJECT_CLASS_CHECK(QIODNSResolverClass, klass, TYPE_QIO_DNS_RESOLVER)
-#define QIO_DNS_RESOLVER_GET_CLASS(obj)                                  \
-    OBJECT_GET_CLASS(QIODNSResolverClass, obj, TYPE_QIO_DNS_RESOLVER)
+OBJECT_DECLARE_SIMPLE_TYPE(QIODNSResolver, qio_dns_resolver,
+                           QIO_DNS_RESOLVER, ObjectClass)
 
-typedef struct QIODNSResolver QIODNSResolver;
-typedef struct QIODNSResolverClass QIODNSResolverClass;
 
 /**
  * QIODNSResolver:
@@ -139,9 +133,6 @@ struct QIODNSResolver {
     Object parent;
 };
 
-struct QIODNSResolverClass {
-    ObjectClass parent;
-};
 
 
 /**
diff --git a/include/io/net-listener.h b/include/io/net-listener.h
index fb101703e3..60fad29ff4 100644
--- a/include/io/net-listener.h
+++ b/include/io/net-listener.h
@@ -22,17 +22,12 @@
 #define QIO_NET_LISTENER_H
 
 #include "io/channel-socket.h"
+#include "qom/object.h"
 
 #define TYPE_QIO_NET_LISTENER "qio-net-listener"
-#define QIO_NET_LISTENER(obj)                                    \
-    OBJECT_CHECK(QIONetListener, (obj), TYPE_QIO_NET_LISTENER)
-#define QIO_NET_LISTENER_CLASS(klass)                                    \
-    OBJECT_CLASS_CHECK(QIONetListenerClass, klass, TYPE_QIO_NET_LISTENER)
-#define QIO_NET_LISTENER_GET_CLASS(obj)                                  \
-    OBJECT_GET_CLASS(QIONetListenerClass, obj, TYPE_QIO_NET_LISTENER)
+OBJECT_DECLARE_SIMPLE_TYPE(QIONetListener, qio_net_listener,
+                           QIO_NET_LISTENER, ObjectClass)
 
-typedef struct QIONetListener QIONetListener;
-typedef struct QIONetListenerClass QIONetListenerClass;
 
 typedef void (*QIONetListenerClientFunc)(QIONetListener *listener,
                                          QIOChannelSocket *sioc,
@@ -63,9 +58,6 @@ struct QIONetListener {
     GDestroyNotify io_notify;
 };
 
-struct QIONetListenerClass {
-    ObjectClass parent;
-};
 
 
 /**
diff --git a/include/net/can_emu.h b/include/net/can_emu.h
index 7e90fd8a45..150f91a657 100644
--- a/include/net/can_emu.h
+++ b/include/net/can_emu.h
@@ -100,8 +100,8 @@ struct CanBusClientState {
 };
 
 #define TYPE_CAN_BUS "can-bus"
-#define CAN_BUS(obj) \
-     OBJECT_CHECK(CanBusState, (obj), TYPE_CAN_BUS)
+DECLARE_INSTANCE_CHECKER(CanBusState, CAN_BUS,
+                         TYPE_CAN_BUS)
 
 int can_bus_filter_match(struct qemu_can_filter *filter, qemu_canid_t can_id);
 
diff --git a/include/net/can_host.h b/include/net/can_host.h
index d79676746b..18979c2e2d 100644
--- a/include/net/can_host.h
+++ b/include/net/can_host.h
@@ -29,27 +29,26 @@
 #define NET_CAN_HOST_H
 
 #include "net/can_emu.h"
+#include "qom/object.h"
 
 #define TYPE_CAN_HOST "can-host"
-#define CAN_HOST_CLASS(klass) \
-     OBJECT_CLASS_CHECK(CanHostClass, (klass), TYPE_CAN_HOST)
-#define CAN_HOST_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(CanHostClass, (obj), TYPE_CAN_HOST)
-#define CAN_HOST(obj) \
-     OBJECT_CHECK(CanHostState, (obj), TYPE_CAN_HOST)
-
-typedef struct CanHostState {
+typedef struct CanHostClass CanHostClass;
+typedef struct CanHostState CanHostState;
+DECLARE_OBJ_CHECKERS(CanHostState, CanHostClass,
+                     CAN_HOST, TYPE_CAN_HOST)
+
+struct CanHostState {
     ObjectClass oc;
 
     CanBusState *bus;
     CanBusClientState bus_client;
-} CanHostState;
+};
 
-typedef struct CanHostClass {
+struct CanHostClass {
     ObjectClass oc;
 
     void (*connect)(CanHostState *ch, Error **errp);
     void (*disconnect)(CanHostState *ch);
-} CanHostClass;
+};
 
 #endif
diff --git a/include/net/filter.h b/include/net/filter.h
index 9393c59192..e7e593128a 100644
--- a/include/net/filter.h
+++ b/include/net/filter.h
@@ -15,12 +15,9 @@
 #include "net/queue.h"
 
 #define TYPE_NETFILTER "netfilter"
-#define NETFILTER(obj) \
-    OBJECT_CHECK(NetFilterState, (obj), TYPE_NETFILTER)
-#define NETFILTER_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(NetFilterClass, (obj), TYPE_NETFILTER)
-#define NETFILTER_CLASS(klass) \
-    OBJECT_CLASS_CHECK(NetFilterClass, (klass), TYPE_NETFILTER)
+typedef struct NetFilterClass NetFilterClass;
+DECLARE_OBJ_CHECKERS(NetFilterState, NetFilterClass,
+                     NETFILTER, TYPE_NETFILTER)
 
 typedef void (FilterSetup) (NetFilterState *nf, Error **errp);
 typedef void (FilterCleanup) (NetFilterState *nf);
@@ -40,7 +37,7 @@ typedef void (FilterStatusChanged) (NetFilterState *nf, Error **errp);
 
 typedef void (FilterHandleEvent) (NetFilterState *nf, int event, Error **errp);
 
-typedef struct NetFilterClass {
+struct NetFilterClass {
     ObjectClass parent_class;
 
     /* optional */
@@ -50,7 +47,7 @@ typedef struct NetFilterClass {
     FilterHandleEvent *handle_event;
     /* mandatory */
     FilterReceiveIOV *receive_iov;
-} NetFilterClass;
+};
 
 
 struct NetFilterState {
diff --git a/include/qom/object.h b/include/qom/object.h
index 0f3a60617c..056f67ab3b 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -16,6 +16,7 @@
 
 #include "qapi/qapi-builtin-types.h"
 #include "qemu/module.h"
+#include "qom/object.h"
 
 struct TypeImpl;
 typedef struct TypeImpl *Type;
@@ -304,6 +305,119 @@ typedef struct InterfaceInfo InterfaceInfo;
  *
  * The first example of such a QOM method was #CPUClass.reset,
  * another example is #DeviceClass.realize.
+ *
+ * # Standard type declaration and definition macros #
+ *
+ * A lot of the code outlined above follows a standard pattern and naming
+ * convention. To reduce the amount of boilerplate code that needs to be
+ * written for a new type there are two sets of macros to generate the
+ * common parts in a standard format.
+ *
+ * A type is declared using the OBJECT_DECLARE macro family. In types
+ * which do not require any virtual functions in the class, the
+ * OBJECT_DECLARE_SIMPLE_TYPE macro is suitable, and is commonly placed
+ * in the header file:
+ *
+ * <example>
+ *   <title>Declaring a simple type</title>
+ *   <programlisting>
+ *     OBJECT_DECLARE_SIMPLE_TYPE(MyDevice, my_device, MY_DEVICE, DEVICE)
+ *   </programlisting>
+ * </example>
+ *
+ * This is equivalent to the following:
+ *
+ * <example>
+ *   <title>Expansion from declaring a simple type</title>
+ *   <programlisting>
+ *     typedef struct MyDevice MyDevice;
+ *     typedef struct MyDeviceClass MyDeviceClass;
+ *
+ *     G_DEFINE_AUTOPTR_CLEANUP_FUNC(MyDeviceClass, object_unref)
+ *
+ *     #define MY_DEVICE_GET_CLASS(void *obj) \
+ *             OBJECT_GET_CLASS(MyDeviceClass, obj, TYPE_MY_DEVICE)
+ *     #define MY_DEVICE_CLASS(void *klass) \
+ *             OBJECT_CLASS_CHECK(MyDeviceClass, klass, TYPE_MY_DEVICE)
+ *     #define MY_DEVICE(void *obj)
+ *             OBJECT_CHECK(MyDevice, obj, TYPE_MY_DEVICE)
+ *
+ *     struct MyDeviceClass {
+ *         DeviceClass parent_class;
+ *     };
+ *   </programlisting>
+ * </example>
+ *
+ * The 'struct MyDevice' needs to be declared separately.
+ * If the type requires virtual functions to be declared in the class
+ * struct, then the alternative OBJECT_DECLARE_TYPE() macro can be
+ * used. This does the same as OBJECT_DECLARE_SIMPLE_TYPE(), but without
+ * the 'struct MyDeviceClass' definition.
+ *
+ * To implement the type, the OBJECT_DEFINE macro family is available.
+ * In the simple case the OBJECT_DEFINE_TYPE macro is suitable:
+ *
+ * <example>
+ *   <title>Defining a simple type</title>
+ *   <programlisting>
+ *     OBJECT_DEFINE_TYPE(MyDevice, my_device, MY_DEVICE, DEVICE)
+ *   </programlisting>
+ * </example>
+ *
+ * This is equivalent to the following:
+ *
+ * <example>
+ *   <title>Expansion from defining a simple type</title>
+ *   <programlisting>
+ *     static void my_device_finalize(Object *obj);
+ *     static void my_device_class_init(ObjectClass *oc, void *data);
+ *     static void my_device_init(Object *obj);
+ *
+ *     static const TypeInfo my_device_info = {
+ *         .parent = TYPE_DEVICE,
+ *         .name = TYPE_MY_DEVICE,
+ *         .instance_size = sizeof(MyDevice),
+ *         .instance_init = my_device_init,
+ *         .instance_finalize = my_device_finalize,
+ *         .class_size = sizeof(MyDeviceClass),
+ *         .class_init = my_device_class_init,
+ *     };
+ *
+ *     static void
+ *     my_device_register_types(void)
+ *     {
+ *         type_register_static(&my_device_info);
+ *     }
+ *     type_init(my_device_register_types);
+ *   </programlisting>
+ * </example>
+ *
+ * This is sufficient to get the type registered with the type
+ * system, and the three standard methods now need to be implemented
+ * along with any other logic required for the type.
+ *
+ * If the type needs to implement one or more interfaces, then the
+ * OBJECT_DEFINE_TYPE_WITH_INTERFACES() macro can be used instead.
+ * This accepts an array of interface type names.
+ *
+ * <example>
+ *   <title>Defining a simple type implementing interfaces</title>
+ *   <programlisting>
+ *     OBJECT_DEFINE_TYPE_WITH_INTERFACES(MyDevice, my_device,
+ *                                        MY_DEVICE, DEVICE,
+ *                                        { TYPE_USER_CREATABLE }, { NULL })
+ *   </programlisting>
+ * </example>
+ *
+ * If the type is not intended to be instantiated, then then
+ * the OBJECT_DEFINE_ABSTRACT_TYPE() macro can be used instead:
+ *
+ * <example>
+ *   <title>Defining a simple type</title>
+ *   <programlisting>
+ *     OBJECT_DEFINE_ABSTRACT_TYPE(MyDevice, my_device, MY_DEVICE, DEVICE)
+ *   </programlisting>
+ * </example>
  */
 
 
@@ -441,6 +555,215 @@ struct Object
 };
 
 /**
+ * DECLARE_INSTANCE_CHECKER:
+ * @InstanceType: instance struct name
+ * @OBJ_NAME: the object name in uppercase with underscore separators
+ * @TYPENAME: type name
+ *
+ * Direct usage of this macro should be avoided, and the complete
+ * OBJECT_DECLARE_TYPE macro is recommended instead.
+ *
+ * This macro will provide the three standard type cast functions for a
+ * QOM type.
+ */
+#define DECLARE_INSTANCE_CHECKER(InstanceType, OBJ_NAME, TYPENAME) \
+    static inline G_GNUC_UNUSED InstanceType * \
+    OBJ_NAME(const void *obj) \
+    { return OBJECT_CHECK(InstanceType, obj, TYPENAME); }
+
+/**
+ * DECLARE_CLASS_CHECKERS:
+ * @ClassType: class struct name
+ * @OBJ_NAME: the object name in uppercase with underscore separators
+ * @TYPENAME: type name
+ *
+ * Direct usage of this macro should be avoided, and the complete
+ * OBJECT_DECLARE_TYPE macro is recommended instead.
+ *
+ * This macro will provide the three standard type cast functions for a
+ * QOM type.
+ */
+#define DECLARE_CLASS_CHECKERS(ClassType, OBJ_NAME, TYPENAME) \
+    static inline G_GNUC_UNUSED ClassType * \
+    OBJ_NAME##_GET_CLASS(const void *obj) \
+    { return OBJECT_GET_CLASS(ClassType, obj, TYPENAME); } \
+    \
+    static inline G_GNUC_UNUSED ClassType * \
+    OBJ_NAME##_CLASS(const void *klass) \
+    { return OBJECT_CLASS_CHECK(ClassType, klass, TYPENAME); }
+
+/**
+ * DECLARE_OBJ_CHECKERS:
+ * @InstanceType: instance struct name
+ * @ClassType: class struct name
+ * @OBJ_NAME: the object name in uppercase with underscore separators
+ * @TYPENAME: type name
+ *
+ * Direct usage of this macro should be avoided, and the complete
+ * OBJECT_DECLARE_TYPE macro is recommended instead.
+ *
+ * This macro will provide the three standard type cast functions for a
+ * QOM type.
+ */
+#define DECLARE_OBJ_CHECKERS(InstanceType, ClassType, OBJ_NAME, TYPENAME) \
+    DECLARE_INSTANCE_CHECKER(InstanceType, OBJ_NAME, TYPENAME) \
+    \
+    DECLARE_CLASS_CHECKERS(ClassType, OBJ_NAME, TYPENAME)
+
+/**
+ * OBJECT_DECLARE_TYPE:
+ * @InstanceType: instance struct name
+ * @ClassType: class struct name
+ * @module_obj_name: the object name in lowercase with underscore separators
+ * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators
+ *
+ * This macro is typically used in a header file, and will:
+ *
+ *   - create the typedefs for the object and class structs
+ *   - register the type for use with g_autoptr
+ *   - provide three standard type cast functions
+ *
+ * The object struct and class struct need to be declared manually.
+ */
+#define OBJECT_DECLARE_TYPE(InstanceType, ClassType, module_obj_name, MODULE_OBJ_NAME) \
+    typedef struct InstanceType InstanceType; \
+    typedef struct ClassType ClassType; \
+    \
+    G_DEFINE_AUTOPTR_CLEANUP_FUNC(InstanceType, object_unref) \
+    \
+    DECLARE_OBJ_CHECKERS(InstanceType, ClassType, \
+                         MODULE_OBJ_NAME, TYPE_##MODULE_OBJ_NAME)
+
+/**
+ * OBJECT_DECLARE_SIMPLE_TYPE:
+ * @InstanceType: instance struct name
+ * @module_obj_name: the object name in lowercase with underscore separators
+ * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators
+ * @ParentClassType: class struct name of parent type
+ *
+ * This does the same as OBJECT_DECLARE_TYPE(), but also declares
+ * the class struct, thus only the object struct needs to be declare
+ * manually.
+ *
+ * This macro should be used unless the class struct needs to have
+ * virtual methods declared.
+ */
+#define OBJECT_DECLARE_SIMPLE_TYPE(InstanceType, module_obj_name, \
+                                   MODULE_OBJ_NAME, ParentClassType) \
+    OBJECT_DECLARE_TYPE(InstanceType, InstanceType##Class, module_obj_name, MODULE_OBJ_NAME) \
+    struct InstanceType##Class { ParentClassType parent_class; };
+
+
+/**
+ * OBJECT_DEFINE_TYPE_EXTENDED:
+ * @ModuleObjName: the object name with initial caps
+ * @module_obj_name: the object name in lowercase with underscore separators
+ * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators
+ * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore
+ *                          separators
+ * @ABSTRACT: boolean flag to indicate whether the object can be instantiated
+ * @...: list of initializers for "InterfaceInfo" to declare implemented interfaces
+ *
+ * This macro is typically used in a source file, and will:
+ *
+ *   - declare prototypes for _finalize, _class_init and _init methods
+ *   - declare the TypeInfo struct instance
+ *   - provide the constructor to register the type
+ *
+ * After using this macro, implementations of the _finalize, _class_init,
+ * and _init methods need to be written. Any of these can be zero-line
+ * no-op impls if no special logic is required for a given type.
+ *
+ * This macro should rarely be used, instead one of the more specialized
+ * macros is usually a better choice.
+ */
+#define OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \
+                                    MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \
+                                    ABSTRACT, ...) \
+    static void \
+    module_obj_name##_finalize(Object *obj); \
+    static void \
+    module_obj_name##_class_init(ObjectClass *oc, void *data); \
+    static void \
+    module_obj_name##_init(Object *obj); \
+    \
+    static const TypeInfo module_obj_name##_info = { \
+        .parent = TYPE_##PARENT_MODULE_OBJ_NAME, \
+        .name = TYPE_##MODULE_OBJ_NAME, \
+        .instance_size = sizeof(ModuleObjName), \
+        .instance_init = module_obj_name##_init, \
+        .instance_finalize = module_obj_name##_finalize, \
+        .class_size = sizeof(ModuleObjName##Class), \
+        .class_init = module_obj_name##_class_init, \
+        .abstract = ABSTRACT, \
+        .interfaces = (InterfaceInfo[]) { __VA_ARGS__ } , \
+    }; \
+    \
+    static void \
+    module_obj_name##_register_types(void) \
+    { \
+        type_register_static(&module_obj_name##_info); \
+    } \
+    type_init(module_obj_name##_register_types);
+
+/**
+ * OBJECT_DEFINE_TYPE:
+ * @ModuleObjName: the object name with initial caps
+ * @module_obj_name: the object name in lowercase with underscore separators
+ * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators
+ * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore
+ *                          separators
+ *
+ * This is a specialization of OBJECT_DEFINE_TYPE_EXTENDED, which is suitable
+ * for the common case of a non-abstract type, without any interfaces.
+ */
+#define OBJECT_DEFINE_TYPE(ModuleObjName, module_obj_name, MODULE_OBJ_NAME, \
+                           PARENT_MODULE_OBJ_NAME) \
+    OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \
+                                MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \
+                                false, { NULL })
+
+/**
+ * OBJECT_DEFINE_TYPE_WITH_INTERFACES:
+ * @ModuleObjName: the object name with initial caps
+ * @module_obj_name: the object name in lowercase with underscore separators
+ * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators
+ * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore
+ *                          separators
+ * @...: list of initializers for "InterfaceInfo" to declare implemented interfaces
+ *
+ * This is a specialization of OBJECT_DEFINE_TYPE_EXTENDED, which is suitable
+ * for the common case of a non-abstract type, with one or more implemented
+ * interfaces.
+ *
+ * Note when passing the list of interfaces, be sure to include the final
+ * NULL entry, e.g.  { TYPE_USER_CREATABLE }, { NULL }
+ */
+#define OBJECT_DEFINE_TYPE_WITH_INTERFACES(ModuleObjName, module_obj_name, \
+                                           MODULE_OBJ_NAME, \
+                                           PARENT_MODULE_OBJ_NAME, ...) \
+    OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \
+                                MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \
+                                false, __VA_ARGS__)
+
+/**
+ * OBJECT_DEFINE_ABSTRACT_TYPE:
+ * @ModuleObjName: the object name with initial caps
+ * @module_obj_name: the object name in lowercase with underscore separators
+ * @MODULE_OBJ_NAME: the object name in uppercase with underscore separators
+ * @PARENT_MODULE_OBJ_NAME: the parent object name in uppercase with underscore
+ *                          separators
+ *
+ * This is a specialization of OBJECT_DEFINE_TYPE_EXTENDED, which is suitable
+ * for defining an abstract type, without any interfaces.
+ */
+#define OBJECT_DEFINE_ABSTRACT_TYPE(ModuleObjName, module_obj_name, \
+                                    MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME) \
+    OBJECT_DEFINE_TYPE_EXTENDED(ModuleObjName, module_obj_name, \
+                                MODULE_OBJ_NAME, PARENT_MODULE_OBJ_NAME, \
+                                true, { NULL })
+
+/**
  * TypeInfo:
  * @name: The name of the type.
  * @parent: The name of the parent type.
@@ -1035,7 +1358,7 @@ GSList *object_class_get_list_sorted(const char *implements_type,
  * as its reference count is greater than zero.
  * Returns: @obj
  */
-Object *object_ref(Object *obj);
+Object *object_ref(void *obj);
 
 /**
  * object_unref:
@@ -1044,7 +1367,7 @@ Object *object_ref(Object *obj);
  * Decrease the reference count of a object.  A object cannot be freed as long
  * as its reference count is greater than zero.
  */
-void object_unref(Object *obj);
+void object_unref(void *obj);
 
 /**
  * object_property_try_add:
diff --git a/include/qom/object_interfaces.h b/include/qom/object_interfaces.h
index 7035829337..f118fb516b 100644
--- a/include/qom/object_interfaces.h
+++ b/include/qom/object_interfaces.h
@@ -6,12 +6,9 @@
 
 #define TYPE_USER_CREATABLE "user-creatable"
 
-#define USER_CREATABLE_CLASS(klass) \
-     OBJECT_CLASS_CHECK(UserCreatableClass, (klass), \
-                        TYPE_USER_CREATABLE)
-#define USER_CREATABLE_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(UserCreatableClass, (obj), \
-                      TYPE_USER_CREATABLE)
+typedef struct UserCreatableClass UserCreatableClass;
+DECLARE_CLASS_CHECKERS(UserCreatableClass, USER_CREATABLE,
+                       TYPE_USER_CREATABLE)
 #define USER_CREATABLE(obj) \
      INTERFACE_CHECK(UserCreatable, (obj), \
                      TYPE_USER_CREATABLE)
@@ -40,14 +37,14 @@ typedef struct UserCreatable UserCreatable;
  * object's type implements USER_CREATABLE interface and needs
  * complete() callback to be called.
  */
-typedef struct UserCreatableClass {
+struct UserCreatableClass {
     /* <private> */
     InterfaceClass parent_class;
 
     /* <public> */
     void (*complete)(UserCreatable *uc, Error **errp);
     bool (*can_be_deleted)(UserCreatable *uc);
-} UserCreatableClass;
+};
 
 /**
  * user_creatable_complete:
diff --git a/include/scsi/pr-manager.h b/include/scsi/pr-manager.h
index 6ad5fd1ff7..26bd134531 100644
--- a/include/scsi/pr-manager.h
+++ b/include/scsi/pr-manager.h
@@ -9,33 +9,29 @@
 
 #define TYPE_PR_MANAGER "pr-manager"
 
-#define PR_MANAGER_CLASS(klass) \
-     OBJECT_CLASS_CHECK(PRManagerClass, (klass), TYPE_PR_MANAGER)
-#define PR_MANAGER_GET_CLASS(obj) \
-     OBJECT_GET_CLASS(PRManagerClass, (obj), TYPE_PR_MANAGER)
-#define PR_MANAGER(obj) \
-     OBJECT_CHECK(PRManager, (obj), TYPE_PR_MANAGER)
+OBJECT_DECLARE_TYPE(PRManager, PRManagerClass,
+                    pr_manager, PR_MANAGER)
 
 struct sg_io_hdr;
 
-typedef struct PRManager {
+struct PRManager {
     /* <private> */
     Object parent;
-} PRManager;
+};
 
 /**
  * PRManagerClass:
  * @parent_class: the base class
  * @run: callback invoked in thread pool context
  */
-typedef struct PRManagerClass {
+struct PRManagerClass {
     /* <private> */
     ObjectClass parent_class;
 
     /* <public> */
     int (*run)(PRManager *pr_mgr, int fd, struct sg_io_hdr *hdr);
     bool (*is_connected)(PRManager *pr_mgr);
-} PRManagerClass;
+};
 
 bool pr_manager_is_connected(PRManager *pr_mgr);
 int coroutine_fn pr_manager_execute(PRManager *pr_mgr, AioContext *ctx, int fd,
diff --git a/include/sysemu/cryptodev.h b/include/sysemu/cryptodev.h
index 35eab06d0e..06726f7014 100644
--- a/include/sysemu/cryptodev.h
+++ b/include/sysemu/cryptodev.h
@@ -37,15 +37,8 @@
 
 #define TYPE_CRYPTODEV_BACKEND "cryptodev-backend"
 
-#define CRYPTODEV_BACKEND(obj) \
-    OBJECT_CHECK(CryptoDevBackend, \
-                 (obj), TYPE_CRYPTODEV_BACKEND)
-#define CRYPTODEV_BACKEND_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(CryptoDevBackendClass, \
-                 (obj), TYPE_CRYPTODEV_BACKEND)
-#define CRYPTODEV_BACKEND_CLASS(klass) \
-    OBJECT_CLASS_CHECK(CryptoDevBackendClass, \
-                (klass), TYPE_CRYPTODEV_BACKEND)
+OBJECT_DECLARE_TYPE(CryptoDevBackend, CryptoDevBackendClass,
+                    cryptodev_backend, CRYPTODEV_BACKEND)
 
 
 #define MAX_CRYPTO_QUEUE_NUM  64
@@ -54,7 +47,6 @@ typedef struct CryptoDevBackendConf CryptoDevBackendConf;
 typedef struct CryptoDevBackendPeers CryptoDevBackendPeers;
 typedef struct CryptoDevBackendClient
                      CryptoDevBackendClient;
-typedef struct CryptoDevBackend CryptoDevBackend;
 
 enum CryptoDevBackendAlgType {
     CRYPTODEV_BACKEND_ALG_SYM,
@@ -146,7 +138,7 @@ typedef struct CryptoDevBackendSymOpInfo {
     uint8_t data[];
 } CryptoDevBackendSymOpInfo;
 
-typedef struct CryptoDevBackendClass {
+struct CryptoDevBackendClass {
     ObjectClass parent_class;
 
     void (*init)(CryptoDevBackend *backend, Error **errp);
@@ -161,7 +153,7 @@ typedef struct CryptoDevBackendClass {
     int (*do_sym_op)(CryptoDevBackend *backend,
                      CryptoDevBackendSymOpInfo *op_info,
                      uint32_t queue_index, Error **errp);
-} CryptoDevBackendClass;
+};
 
 typedef enum CryptoDevBackendOptionsType {
     CRYPTODEV_BACKEND_TYPE_NONE = 0,
diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h
index 8276e53683..e5b7a152d3 100644
--- a/include/sysemu/hostmem.h
+++ b/include/sysemu/hostmem.h
@@ -20,12 +20,8 @@
 #include "qemu/bitmap.h"
 
 #define TYPE_MEMORY_BACKEND "memory-backend"
-#define MEMORY_BACKEND(obj) \
-    OBJECT_CHECK(HostMemoryBackend, (obj), TYPE_MEMORY_BACKEND)
-#define MEMORY_BACKEND_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(HostMemoryBackendClass, (obj), TYPE_MEMORY_BACKEND)
-#define MEMORY_BACKEND_CLASS(klass) \
-    OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND)
+OBJECT_DECLARE_TYPE(HostMemoryBackend, HostMemoryBackendClass,
+                    memory_backend, MEMORY_BACKEND)
 
 /* hostmem-ram.c */
 /**
@@ -42,8 +38,6 @@
  */
 #define TYPE_MEMORY_BACKEND_FILE "memory-backend-file"
 
-typedef struct HostMemoryBackend HostMemoryBackend;
-typedef struct HostMemoryBackendClass HostMemoryBackendClass;
 
 /**
  * HostMemoryBackendClass:
diff --git a/include/sysemu/hvf.h b/include/sysemu/hvf.h
index 760d6c79a2..1398679458 100644
--- a/include/sysemu/hvf.h
+++ b/include/sysemu/hvf.h
@@ -14,6 +14,7 @@
 #define HVF_H
 
 #include "sysemu/accel.h"
+#include "qom/object.h"
 
 #ifdef CONFIG_HVF
 uint32_t hvf_get_supported_cpuid(uint32_t func, uint32_t idx,
@@ -36,7 +37,7 @@ void hvf_vcpu_destroy(CPUState *);
 #define TYPE_HVF_ACCEL ACCEL_CLASS_NAME("hvf")
 
 typedef struct HVFState HVFState;
-#define HVF_STATE(obj) \
-    OBJECT_CHECK(HVFState, (obj), TYPE_HVF_ACCEL)
+DECLARE_INSTANCE_CHECKER(HVFState, HVF_STATE,
+                         TYPE_HVF_ACCEL)
 
 #endif
diff --git a/include/sysemu/iothread.h b/include/sysemu/iothread.h
index 6181486401..0c5284dbbc 100644
--- a/include/sysemu/iothread.h
+++ b/include/sysemu/iothread.h
@@ -20,7 +20,7 @@
 
 #define TYPE_IOTHREAD "iothread"
 
-typedef struct {
+struct IOThread {
     Object parent_obj;
 
     QemuThread thread;
@@ -37,10 +37,11 @@ typedef struct {
     int64_t poll_max_ns;
     int64_t poll_grow;
     int64_t poll_shrink;
-} IOThread;
+};
+typedef struct IOThread IOThread;
 
-#define IOTHREAD(obj) \
-   OBJECT_CHECK(IOThread, obj, TYPE_IOTHREAD)
+DECLARE_INSTANCE_CHECKER(IOThread, IOTHREAD,
+                         TYPE_IOTHREAD)
 
 char *iothread_get_id(IOThread *iothread);
 IOThread *iothread_by_id(const char *id);
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 8445a88db1..5bbea53883 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -18,6 +18,7 @@
 #include "hw/core/cpu.h"
 #include "exec/memattrs.h"
 #include "sysemu/accel.h"
+#include "qom/object.h"
 
 #ifdef NEED_CPU_H
 # ifdef CONFIG_KVM
@@ -203,8 +204,8 @@ struct KVMState;
 
 #define TYPE_KVM_ACCEL ACCEL_CLASS_NAME("kvm")
 typedef struct KVMState KVMState;
-#define KVM_STATE(obj) \
-    OBJECT_CHECK(KVMState, (obj), TYPE_KVM_ACCEL)
+DECLARE_INSTANCE_CHECKER(KVMState, KVM_STATE,
+                         TYPE_KVM_ACCEL)
 
 extern KVMState *kvm_state;
 typedef struct Notifier Notifier;
diff --git a/include/sysemu/rng-random.h b/include/sysemu/rng-random.h
index 38186fe83d..58033ac3fe 100644
--- a/include/sysemu/rng-random.h
+++ b/include/sysemu/rng-random.h
@@ -15,8 +15,9 @@
 #include "qom/object.h"
 
 #define TYPE_RNG_RANDOM "rng-random"
-#define RNG_RANDOM(obj) OBJECT_CHECK(RngRandom, (obj), TYPE_RNG_RANDOM)
-
 typedef struct RngRandom RngRandom;
+DECLARE_INSTANCE_CHECKER(RngRandom, RNG_RANDOM,
+                         TYPE_RNG_RANDOM)
+
 
 #endif
diff --git a/include/sysemu/rng.h b/include/sysemu/rng.h
index fa6eada78c..cee45a4787 100644
--- a/include/sysemu/rng.h
+++ b/include/sysemu/rng.h
@@ -17,18 +17,12 @@
 #include "qom/object.h"
 
 #define TYPE_RNG_BACKEND "rng-backend"
-#define RNG_BACKEND(obj) \
-    OBJECT_CHECK(RngBackend, (obj), TYPE_RNG_BACKEND)
-#define RNG_BACKEND_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(RngBackendClass, (obj), TYPE_RNG_BACKEND)
-#define RNG_BACKEND_CLASS(klass) \
-    OBJECT_CLASS_CHECK(RngBackendClass, (klass), TYPE_RNG_BACKEND)
+OBJECT_DECLARE_TYPE(RngBackend, RngBackendClass,
+                    rng_backend, RNG_BACKEND)
 
 #define TYPE_RNG_BUILTIN "rng-builtin"
 
 typedef struct RngRequest RngRequest;
-typedef struct RngBackendClass RngBackendClass;
-typedef struct RngBackend RngBackend;
 
 typedef void (EntropyReceiveFunc)(void *opaque,
                                   const void *data,
diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
index 730c61ac97..1a85564e47 100644
--- a/include/sysemu/tpm.h
+++ b/include/sysemu/tpm.h
@@ -26,22 +26,21 @@ typedef enum TPMVersion {
 } TPMVersion;
 
 #define TYPE_TPM_IF "tpm-if"
-#define TPM_IF_CLASS(klass)                                 \
-    OBJECT_CLASS_CHECK(TPMIfClass, (klass), TYPE_TPM_IF)
-#define TPM_IF_GET_CLASS(obj)                           \
-    OBJECT_GET_CLASS(TPMIfClass, (obj), TYPE_TPM_IF)
+typedef struct TPMIfClass TPMIfClass;
+DECLARE_CLASS_CHECKERS(TPMIfClass, TPM_IF,
+                       TYPE_TPM_IF)
 #define TPM_IF(obj)                             \
     INTERFACE_CHECK(TPMIf, (obj), TYPE_TPM_IF)
 
 typedef struct TPMIf TPMIf;
 
-typedef struct TPMIfClass {
+struct TPMIfClass {
     InterfaceClass parent_class;
 
     enum TpmModel model;
     void (*request_completed)(TPMIf *obj, int ret);
     enum TPMVersion (*get_version)(TPMIf *obj);
-} TPMIfClass;
+};
 
 #define TYPE_TPM_TIS_ISA            "tpm-tis"
 #define TYPE_TPM_TIS_SYSBUS         "tpm-tis-device"
diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h
index 9e7451fb52..7e8a014031 100644
--- a/include/sysemu/tpm_backend.h
+++ b/include/sysemu/tpm_backend.h
@@ -19,15 +19,9 @@
 #include "qapi/error.h"
 
 #define TYPE_TPM_BACKEND "tpm-backend"
-#define TPM_BACKEND(obj) \
-    OBJECT_CHECK(TPMBackend, (obj), TYPE_TPM_BACKEND)
-#define TPM_BACKEND_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(TPMBackendClass, (obj), TYPE_TPM_BACKEND)
-#define TPM_BACKEND_CLASS(klass) \
-    OBJECT_CLASS_CHECK(TPMBackendClass, (klass), TYPE_TPM_BACKEND)
-
-typedef struct TPMBackendClass TPMBackendClass;
-typedef struct TPMBackend TPMBackend;
+OBJECT_DECLARE_TYPE(TPMBackend, TPMBackendClass,
+                    tpm_backend, TPM_BACKEND)
+
 
 typedef struct TPMBackendCmd {
     uint8_t locty;
diff --git a/include/sysemu/vhost-user-backend.h b/include/sysemu/vhost-user-backend.h
index 9abf8f06a1..23205edeb8 100644
--- a/include/sysemu/vhost-user-backend.h
+++ b/include/sysemu/vhost-user-backend.h
@@ -22,19 +22,10 @@
 #include "io/channel.h"
 
 #define TYPE_VHOST_USER_BACKEND "vhost-user-backend"
-#define VHOST_USER_BACKEND(obj) \
-    OBJECT_CHECK(VhostUserBackend, (obj), TYPE_VHOST_USER_BACKEND)
-#define VHOST_USER_BACKEND_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(VhostUserBackendClass, (obj), TYPE_VHOST_USER_BACKEND)
-#define VHOST_USER_BACKEND_CLASS(klass) \
-    OBJECT_CLASS_CHECK(VhostUserBackendClass, (klass), TYPE_VHOST_USER_BACKEND)
-
-typedef struct VhostUserBackend VhostUserBackend;
-typedef struct VhostUserBackendClass VhostUserBackendClass;
-
-struct VhostUserBackendClass {
-    ObjectClass parent_class;
-};
+OBJECT_DECLARE_SIMPLE_TYPE(VhostUserBackend, vhost_user_backend,
+                           VHOST_USER_BACKEND, ObjectClass)
+
+
 
 struct VhostUserBackend {
     /* private */
diff --git a/include/ui/console.h b/include/ui/console.h
index f35b4fc082..8602203523 100644
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -106,14 +106,10 @@ void kbd_put_keysym(int keysym);
 /* consoles */
 
 #define TYPE_QEMU_CONSOLE "qemu-console"
-#define QEMU_CONSOLE(obj) \
-    OBJECT_CHECK(QemuConsole, (obj), TYPE_QEMU_CONSOLE)
-#define QEMU_CONSOLE_GET_CLASS(obj) \
-    OBJECT_GET_CLASS(QemuConsoleClass, (obj), TYPE_QEMU_CONSOLE)
-#define QEMU_CONSOLE_CLASS(klass) \
-    OBJECT_CLASS_CHECK(QemuConsoleClass, (klass), TYPE_QEMU_CONSOLE)
-
 typedef struct QemuConsoleClass QemuConsoleClass;
+DECLARE_OBJ_CHECKERS(QemuConsole, QemuConsoleClass,
+                     QEMU_CONSOLE, TYPE_QEMU_CONSOLE)
+
 
 struct QemuConsoleClass {
     ObjectClass parent_class;