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2021-05-16softfloat: Move round_to_int_and_pack to softfloat-parts.c.incRichard Henderson2-284/+145
Rename to parts$N_float_to_sint. Reimplement float128_to_int{32,64}{_round_to_zero} with FloatParts128. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move round_to_int to softfloat-parts.c.incRichard Henderson2-327/+262
At the same time, convert to pointers, split out parts$N_round_to_int_normal, define a macro for parts_round_to_int using QEMU_GENERIC. This necessarily meant some rearrangement to the rount_to_{,u}int_and_pack routines, so go ahead and convert to parts_round_to_int_normal, which in turn allows cleaning up of the raised exception handling. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Convert float-to-float conversions with float128Richard Henderson1-134/+69
Introduce parts_float_to_float_widen and parts_float_to_float_narrow. Use them for float128_to_float{32,64} and float{32,64}_to_float128. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Split float_to_floatRichard Henderson1-73/+101
Split out parts_float_to_ahp and parts_float_to_float. Convert to pointers. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move div_floats to softfloat-parts.c.incRichard Henderson2-174/+171
Rename to parts$N_div. Implement float128_div with FloatParts128. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Introduce sh[lr]_double primitivesRichard Henderson2-23/+115
Have x86_64 assembly for them, with a fallback. This avoids shuffling values through %cl in the x86 case. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Tidy mul128By64To192Richard Henderson1-16/+6
Clean up the formatting and variables; no functional change. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use add192 in mul128To256Richard Henderson1-25/+12
We can perform the operation in 6 total adds instead of 8. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use mulu64 for mul64To128Richard Henderson1-20/+3
Via host-utils.h, we use a host widening multiply for 64-bit hosts, and a common subroutine for 32-bit hosts. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move muladd_floats to softfloat-parts.c.incRichard Henderson6-214/+342
Rename to parts$N_muladd. Implement float128_muladd with FloatParts128. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move mul_floats to softfloat-parts.c.incRichard Henderson2-129/+128
Rename to parts$N_mul. Reimplement float128_mul with FloatParts128. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Implement float128_add/sub via partsRichard Henderson1-221/+36
Replace the existing Berkeley implementation with the FloatParts implementation. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move addsub_floats to softfloat-parts.c.incRichard Henderson3-141/+255
In preparation for implementing multiple sizes. Rename to parts_addsub, split out parts_add/sub_normal for future reuse with muladd. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use uadd64_carry, usub64_borrow in softfloat-macros.hRichard Henderson1-70/+25
Use compiler support for carry arithmetic. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move round_canonical to softfloat-parts.c.incRichard Henderson2-155/+192
At the same time, convert to pointers, renaming to parts$N_uncanon, and define a macro for parts_uncanon using QEMU_GENERIC. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move sf_canonicalize to softfloat-parts.c.incRichard Henderson2-38/+112
At the same time, convert to pointers, rename to parts$N_canonicalize and define a macro for parts_canonicalize using QEMU_GENERIC. Rearrange the cases to recognize float_class_normal as early as possible. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move pick_nan_muladd to softfloat-parts.c.incRichard Henderson2-40/+53
At the same time, convert to pointers, rename to pick_nan_muladd$N and define a macro for pick_nan_muladd using QEMU_GENERIC. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move pick_nan to softfloat-parts.c.incRichard Henderson2-27/+60
At the same time, convert to pointers, rename to parts$N_pick_nan and define a macro for parts_pick_nan using QEMU_GENERIC. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move return_nan to softfloat-parts.c.incRichard Henderson2-20/+62
At the same time, convert to pointers, rename to return_nan$N and define a macro for return_nan using QEMU_GENERIC. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Convert float128_default_nan to partsRichard Henderson2-13/+23
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Convert float128_silence_nan to partsRichard Henderson2-32/+89
This is the minimal change that also introduces float128_params, float128_unpack_raw, and float128_pack_raw without running into unused symbol Werrors. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Rearrange FloatParts64Richard Henderson1-2/+12
Shuffle the fraction to the end, otherwise sort by size. Add frac_hi and frac_lo members to alias frac. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with parts_silence_nanRichard Henderson2-13/+20
At the same time, rename to parts64_silence_nan, split out parts_silence_nan_frac, and define a macro for parts_silence_nan. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with ftype_round_pack_canonicalRichard Henderson1-63/+68
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with ftype_unpack_canonicalRichard Henderson1-189/+320
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with ftype_pack_rawRichard Henderson1-20/+24
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with pack_rawRichard Henderson1-8/+13
At the same time, rename to pack_raw64. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with ftype_unpack_rawRichard Henderson1-28/+48
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with unpack_rawRichard Henderson1-10/+19
At the same time, rename to unpack_raw64. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use pointers with parts_default_nanRichard Henderson2-17/+34
At the same time, rename to parts64_default_nan and add a macro for parts_default_nan. This will be flushed out once 128-bit support is added. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move type-specific pack/unpack routinesRichard Henderson1-53/+56
In preparation from moving sf_canonicalize. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Rename FloatParts to FloatParts64Richard Henderson2-184/+184
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Do not produce a default_nan from parts_silence_nanRichard Henderson1-6/+5
Require default_nan_mode to be set instead. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16target/mips: Set set_default_nan_mode with set_snan_bit_is_oneRichard Henderson1-2/+8
This behavior is currently hard-coded in parts_silence_nan, but setting this bit properly will allow this to be cleaned up. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: fix return_nan vs default_nan_modeRichard Henderson1-12/+7
Do not call parts_silence_nan when default_nan_mode is in effect. This will avoid an assert in a later patch. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use return_nan in float_to_floatRichard Henderson1-7/+1
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Add float_cmask and constantsRichard Henderson1-7/+23
Testing more than one class at a time is better done with masks. This reduces the static branch count. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Tidy a * b + inf returnRichard Henderson1-3/+2
No reason to set values in 'a', when we already have float_class_inf in 'c', and can flip that sign. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Use float_raise in more placesRichard Henderson1-43/+44
We have been somewhat inconsistent about when to use float_raise and when to or in the bit by hand. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Inline float_raiseRichard Henderson2-13/+4
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16softfloat: Move the binary point to the msbRichard Henderson1-103/+66
Rather than point the binary point at msb-1, put it at the msb. Use uadd64_overflow to detect when addition overflows instead of DECOMPOSED_OVERFLOW_BIT. This reduces the number of special cases within the code, such as shifting an int64_t either left or right during conversion. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16tests/fp: add quad support to the benchmark utilityAlex Bennée1-5/+83
Currently this only support softfloat calculations because working out if the hardware supports 128 bit floats needs configure magic. The 3 op muladd operation is currently unimplemented so commented out for now. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20201020163738.27700-8-alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16accel/tcg: Use add/sub overflow routines in tcg-runtime-gvec.cRichard Henderson1-20/+16
Obvious uses of the new functions. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16qemu/host-utils: Add wrappers for carry builtinsRichard Henderson1-0/+50
These builtins came in clang 3.8, but are not present in gcc through version 11. Even in clang the optimization is only ideal on x86_64, but never worse than the hand-coding that we currently do. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16qemu/host-utils: Add wrappers for overflow builtinsRichard Henderson1-0/+225
These builtins came in with gcc 5 and clang 3.8, which are slightly newer than our supported minimum compiler versions. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16qemu/host-utils: Use __builtin_bitreverseNRichard Henderson1-0/+16
Clang has added some builtins for these operations; use them if available. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-14Fix build with 64 bits time_tFabrice Fontaine2-3/+10
time element is deprecated on new input_event structure in kernel's input.h [1] This will avoid the following build failure: hw/input/virtio-input-host.c: In function 'virtio_input_host_handle_status': hw/input/virtio-input-host.c:198:28: error: 'struct input_event' has no member named 'time' 198 | if (gettimeofday(&evdev.time, NULL)) { | ^ Fixes: - http://autobuild.buildroot.org/results/a538167e288c14208d557cd45446df86d3d599d5 - http://autobuild.buildroot.org/results/efd4474fb4b6c0ce0ab3838ce130429c51e43bbb [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=152194fe9c3f Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> Message-Id: <20201203195819.583626-1-fontaine.fabrice@gmail.com> Fixes: https://gitlab.com/qemu-project/qemu/-/issues/246 Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-14vhost-vdpa: Make vhost_vdpa_get_device_id() staticZenghui Yu2-4/+2
As it's only used inside hw/virtio/vhost-vdpa.c. Signed-off-by: Zenghui Yu <yuzenghui@huawei.com> Message-Id: <20210413133737.1574-1-yuzenghui@huawei.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-14hw/virtio: enable ioeventfd configuring for mmioPavel Dovgalyuk2-1/+15
This patch adds ioeventfd flag for virtio-mmio configuration. It allows switching ioeventfd on and off. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Message-Id: <161700379211.1135943.8859209566937991305.stgit@pasha-ThinkPad-X280> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2021-05-14hw/smbios: support for type 41 (onboard devices extended information)Vincent Bernat5-6/+173
Type 41 defines the attributes of devices that are onboard. The original intent was to imply the BIOS had some level of control over the enablement of the associated devices. If network devices are present in this table, by default, udev will name the corresponding interfaces enoX, X being the instance number. Without such information, udev will fallback to using the PCI ID and this usually gives ens3 or ens4. This can be a bit annoying as the name of the network card may depend on the order of options and may change if a new PCI device is added earlier on the commande line. Being able to provide SMBIOS type 41 entry ensure the name of the interface won't change and helps the user guess the right name without booting a first time. This can be invoked with: $QEMU -netdev user,id=internet -device virtio-net-pci,mac=50:54:00:00:00:42,netdev=internet,id=internet-dev \ -smbios type=41,designation='Onboard LAN',instance=1,kind=ethernet,pcidev=internet-dev The PCI segment is assumed to be 0. This should hold true for most cases. $ dmidecode -t 41 # dmidecode 3.3 Getting SMBIOS data from sysfs. SMBIOS 2.8 present. Handle 0x2900, DMI type 41, 11 bytes Onboard Device Reference Designation: Onboard LAN Type: Ethernet Status: Enabled Type Instance: 1 Bus Address: 0000:00:09.0 $ ip -brief a lo UNKNOWN 127.0.0.1/8 ::1/128 eno1 UP 10.0.2.14/24 fec0::5254:ff:fe00:42/64 fe80::5254:ff:fe00:42/64 Signed-off-by: Vincent Bernat <vincent@bernat.ch> Message-Id: <20210401171138.62970-1-vincent@bernat.ch> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>