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* linux-user/microblaze: Create init_main_threadRichard Henderson2025-08-281-7/+1
| | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/mips: Create init_main_threadRichard Henderson2025-08-281-7/+1
| | | | | | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Note that init_thread had set cp0_status in target_pt_regs, but target_cpu_copy_regs did not copy to env. This turns out to be ok because mips_cpu_reset_hold initializes CP0_Status properly. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/loongarch64: Create init_main_threadRichard Henderson2025-08-281-8/+1
| | | | | | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Note that init_thread had set crmd in target_pt_regs, but target_cpu_copy_regs did not copy to env. This turns out to be ok because loongarch_cpu_reset_hold initializes CRMD properly. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/ppc: Create init_main_threadRichard Henderson2025-08-281-16/+1
| | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/sparc: Create init_main_threadRichard Henderson2025-08-281-10/+2
| | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/aarch64: Create init_main_threadRichard Henderson2025-08-281-9/+1
| | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/arm: Create init_main_threadRichard Henderson2025-08-281-40/+1
| | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/i386: Create init_main_threadRichard Henderson2025-08-281-23/+6
| | | | | | | | | Merge init_thread and target_cpu_copy_regs. There's no point going through a target_pt_regs intermediate. Temporarily introduce HAVE_INIT_MAIN_THREAD during conversion. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Create do_init_main_threadRichard Henderson2025-08-281-2/+5
| | | | | | | | Provide a unified function to initialize the main thread. Keep target_pt_regs isolated to this function. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_base_platform to mips/elfload.cRichard Henderson2025-08-281-36/+4
| | | | | | | | | Pass in CPUState; define HAVE_ELF_BASE_PLATFORM. Since this was the only instance of ELF_BASE_PLATFORM, go ahead and provide the stub definition for other platforms. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Remove ELF_PLATFORMRichard Henderson2025-08-281-14/+4
| | | | | | | | | All real definitions of ELF_PLATFORM are now identical, and the stub definitions are NULL. Use HAVE_ELF_PLATFORM and provide a stub as a fallback definition of get_elf_platform. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/hppa: Create get_elf_platformRichard Henderson2025-08-281-1/+1
| | | | | | | Move the string literal to a new function. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/loongarch64: Create get_elf_platformRichard Henderson2025-08-281-1/+1
| | | | | | | Move the string literal to a new function. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_platform to arm/elfload.cRichard Henderson2025-08-281-36/+2
| | | | | | | | | | | | | Move the aarch32 get_elf_platform to arm/elfload.c; pass in CPUState. Create a simple version in aarch64/elfload.c, which we must do at the same time because of the ifdef dependency between TARGET_AARCH64 and TARGET_ARM. Since all versions of get_elf_platform now have the same signature, remove the ifdef from the declaration in loader.h. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_platform to {i386,x86_64}/elfload.cRichard Henderson2025-08-281-16/+2
| | | | | | | | | Move get_elf_platform to i386/elfload.c; pass in CPUState. Create a simple get_elf_platform for x86_64. Introduce HAVE_ELF_PLATFORM. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Remove ELF_HWCAP2Richard Henderson2025-08-281-13/+10
| | | | | | | | All definitions of ELF_HWCAP2 are now identical. Provide a not-reached stub as a fallback definition of get_elf_hwcap2. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Remove ELF_HWCAPRichard Henderson2025-08-281-23/+12
| | | | | | | | All real definitions of ELF_HWCAP are now identical, and the stub definitions are 0. Provide zero stub as a fallback definition. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_hwcap to riscv/elfload.cRichard Henderson2025-08-281-13/+1
| | | | | | | | | Change the return type to abi_ulong, and pass in the cpu. As this is the last instance of get_elf_hwcap to be converted, remove the ifdef around the declaration in loader.h. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move hwcap functions to s390x/elfload.cRichard Henderson2025-08-281-59/+1
| | | | | | | | For get_elf_hwcap, change the return type to abi_ulong and pass in the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_hwcap to sh4/elfload.cRichard Henderson2025-08-281-28/+1
| | | | | | | Change the return type to abi_ulong, and pass in the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_hwcap to mips/elfload.cRichard Henderson2025-08-281-51/+1
| | | | | | | Change the return type to abi_ulong, and pass in the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_hwcap to loongarch64/elfload.cRichard Henderson2025-08-281-48/+1
| | | | | | | Change the return type to abi_ulong, and pass in the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move hwcap functions to ppc/elfload.cRichard Henderson2025-08-281-114/+2
| | | | | | | Change the return type to abi_ulong, and pass in the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_hwcap to sparc/elfload.cRichard Henderson2025-08-281-29/+1
| | | | | | | Change the return type to abi_ulong, and pass in the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move hwcap functions to {arm,aarch64}/elfload.cRichard Henderson2025-08-281-501/+4
| | | | | | | | | | For get_elf_hwcap and get_elf_hwcap2, change the return type to abi_ulong, and pass in the cpu. We must do these targets at the same time because of the ifdef dependency between TARGET_AARCH64 and TARGET_ARM. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move get_elf_hwcap to {i386,x86_64}/elfload.cRichard Henderson2025-08-281-8/+1
| | | | | | | | | Change the return type to abi_ulong, and pass in the cpu. Duplicate the one line function between i386 and x86_64, as most other additions to elfload.c won't be common. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move ppc uabi/asm/elf.h workaround to osdep.hRichard Henderson2025-08-281-10/+0
| | | | | | | | | | | | | Move the workaround out of linux-user/elfload.c, so that we don't have to replicate it in many places. Place it immediately after the include of <signal.h>, which draws in the relevant symbols. Note that ARCH_DLINFO is not defined by the kernel header, and so there's no need to undef it either. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/aarch64: Set hwcap bits for SME2p1/SVE2p1Richard Henderson2025-07-041-0/+8
| | | | | | | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20250704142112.1018902-108-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user/aarch64: Update hwcap bits from 6.14Richard Henderson2025-06-231-3/+72
| | | | | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* accel/tcg: Use vaddr for walk_memory_regions callbackRichard Henderson2025-04-301-10/+9
| | | | | | | | | | | Use vaddr instead of target_ulong. At the same time, use int instead of unsigned long for flags, to match page_set_flags(). Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* accel/tcg: Add CPUState argument to page_unprotectRichard Henderson2025-04-301-1/+1
| | | | | | | | | In the next patch, page_unprotect will need to pass the CPUState to tb_invalidate_phys_page_unwind. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/elfload: Use target_needs_bswap()Philippe Mathieu-Daudé2025-04-251-24/+39
| | | | | | | | | Check whether we need to swap at runtime using target_needs_bswap(). Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20250417131004.47205-2-philmd@linaro.org>
* include/exec: Split out mmap-lock.hRichard Henderson2025-04-231-0/+1
| | | | | | | | | Split out mmap_lock, et al from page-protection.h to a new header. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* exec/cpu-all: remove BSWAP_NEEDEDPierrick Bouvier2025-03-211-4/+4
| | | | | | | | | This identifier is poisoned, so it can't be used from common code anyway. We replace all occurrences with its definition directly. Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Link: https://lore.kernel.org/r/20250320223002.2915728-2-pierrick.bouvier@linaro.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* elfload: Fix alignment when unmapping excess reservationFabiano Rosas2025-02-181-2/+2
| | | | | | | | | | | | | | | | When complying with the alignment requested in the ELF and unmapping the excess reservation, having align_end not aligned to the guest page causes the unmap to be rejected by the alignment check at target_munmap and later brk adjustments hit an EEXIST. Fix by aligning the start of region to be unmapped. Fixes: c81d1fafa6 ("linux-user: Honor elf alignment when placing images") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1913 Signed-off-by: Fabiano Rosas <farosas@suse.de> [rth: Align load_end as well.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20250213143558.10504-1-farosas@suse.de>
* accel/tcg: Include missing 'exec/translation-block.h' headerPhilippe Mathieu-Daudé2024-12-201-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TB compile flags, tb_page_addr_t type, tb_cflags() and few other methods are defined in "exec/translation-block.h". All these files don't include "exec/translation-block.h" but include "exec/exec-all.h" which include it. Explicitly include "exec/translation-block.h" to be able to remove it from "exec/exec-all.h" later when it won't be necessary. Otherwise we'd get errors such: accel/tcg/internal-target.h:59:20: error: a parameter list without types is only allowed in a function definition 59 | void tb_lock_page0(tb_page_addr_t); | ^ accel/tcg/tb-hash.h:64:23: error: unknown type name 'tb_page_addr_t' 64 | uint32_t tb_hash_func(tb_page_addr_t phys_pc, vaddr pc, | ^ accel/tcg/tcg-accel-ops.c:62:36: error: use of undeclared identifier 'CF_CLUSTER_SHIFT' 62 | cflags = cpu->cluster_index << CF_CLUSTER_SHIFT; | ^ accel/tcg/watchpoint.c:102:47: error: use of undeclared identifier 'CF_NOIRQ' 102 | cpu->cflags_next_tb = 1 | CF_NOIRQ | curr_cflags(cpu); | ^ target/i386/helper.c:536:28: error: use of undeclared identifier 'CF_PCREL' 536 | if (tcg_cflags_has(cs, CF_PCREL)) { | ^ target/rx/cpu.c:51:21: error: incomplete definition of type 'struct TranslationBlock' 51 | cpu->env.pc = tb->pc; | ~~^ system/physmem.c:2977:9: error: call to undeclared function 'tb_invalidate_phys_range'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 2977 | tb_invalidate_phys_range(addr, addr + length - 1); | ^ plugins/api.c:96:12: error: call to undeclared function 'tb_cflags'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 96 | return tb_cflags(tcg_ctx->gen_tb) & CF_MEMI_ONLY; | ^ Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20241114011310.3615-5-philmd@linaro.org>
* accel/tcg: Move page_[un]protect() to 'user/page-protection.h'Philippe Mathieu-Daudé2024-12-201-1/+1
| | | | | | | Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20241212185341.2857-7-philmd@linaro.org>
* linux-user/arm: Select vdso for be8 and be32 modesRichard Henderson2024-11-161-6/+25
| | | | | | | | | In be8 mode, instructions are little-endian. In be32 mode, instructions are big-endian. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2333 Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Drop image_info.alignmentRichard Henderson2024-11-161-4/+3
| | | | | | | | This field is write-only. Use only the function-local variable within load_elf_image. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Honor elf alignment when placing imagesRichard Henderson2024-11-161-7/+28
| | | | | | | | | | | | | | Most binaries don't actually depend on more than page alignment, but any binary can request it. Not honoring this was a bug. This became obvious when gdb reported Failed to read a valid object file image from memory when examining some vdso which are marked as needing more than page alignment. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Tolerate CONFIG_LSM_MMAP_MIN_ADDRIlya Leoshkevich2024-11-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | Running qemu-i386 on a system running with SELinux in enforcing mode (more precisely: s390x trixie container on Fedora 40) fails with: qemu-i386: tests/tcg/i386-linux-user/sigreturn-sigmask: Unable to find a guest_base to satisfy all guest address mapping requirements 00000000-ffffffff The reason is that main() determines mmap_min_addr from /proc/sys/vm/mmap_min_addr, but SELinux additionally defines CONFIG_LSM_MMAP_MIN_ADDR, which is normally larger: 32K or 64K, but, in general, can be anything. There is no portable way to query its value: /boot/config, /proc/config and /proc/config.gz are distro- and environment-specific. Once the identity map fails, the magnitude of guest_base does not matter, so fix by starting the search from 1M or 1G. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2598 Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20241023002558.34589-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/i386: Emulate orig_axIlya Leoshkevich2024-10-131-2/+2
| | | | | | | | | | The kernel uses orig_rax/orig_eax to store the syscall number before a syscall. One can see this value in core dumps and ptrace. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240912093012.402366-3-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* include/exec: Introduce env_cpu_const()Ilya Leoshkevich2024-10-131-1/+1
| | | | | | | | | It's the same as env_cpu(), but for const objects. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240912093012.402366-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Fix parse_elf_properties GNU0_MAGIC checkRichard Henderson2024-10-081-6/+6
| | | | | | | | | | | | | | Comparing a string of 4 bytes only works in little-endian. Adjust bulk bswap to only apply to the note payload. Perform swapping of the note header manually; the magic is defined so that it does not need a runtime swap. Fixes: 83f990eb5adb ("linux-user/elfload: Parse NT_GNU_PROPERTY_TYPE_0 notes") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2596 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
* linux-user: Remove support for CRIS targetPhilippe Mathieu-Daudé2024-09-131-15/+0
| | | | | | | | | | | | | | | | As per the deprecation notice in commit c7bbef4023: The CRIS architecture was pulled from Linux in 4.17 and the compiler is no longer packaged in any distro making it harder to run the `check-tcg` tests. Unless we can improve the testing situation there is a chance the code will bitrot without anyone noticing. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Edgar E. Iglesias <edgar.iglesias@amd.com> Message-ID: <20240904143603.52934-5-philmd@linaro.org>
* linux-user/elfload: Fix pr_pid values in core filesIlya Leoshkevich2024-08-051-5/+3
| | | | | | | | | | | | | | | | | | | | | Analyzing qemu-produced core dumps of multi-threaded apps runs into: (gdb) info threads [...] 21 Thread 0x3ff83cc0740 (LWP 9295) warning: Couldn't find general-purpose registers in core file. <unavailable> in ?? () The reason is that all pr_pid values are the same, because the same TaskState is used for all CPUs when generating NT_PRSTATUS notes. Fix by using TaskStates associated with individual CPUs. Cc: qemu-stable@nongnu.org Fixes: 243c47066253 ("linux-user/elfload: Write corefile elf header in one block") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20240801202340.21845-1-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* target/sparc: Implement IMA extensionRichard Henderson2024-06-051-0/+1
| | | | | Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* target/sparc: Enable VIS3 feature bitRichard Henderson2024-06-051-0/+1
| | | | | Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* target/sparc: Implement FMAf extensionRichard Henderson2024-06-051-0/+1
| | | | | | | Rearrange PDIST so that do_dddd is general purpose and may be re-used for FMADDd etc. Add pickNaN and pickNaNMulAdd. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/hppa: Force all code addresses to PRIV_USERRichard Henderson2024-05-151-2/+2
| | | | | | | The kernel does this along the return path to user mode. Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>