aboutsummaryrefslogtreecommitdiff
path: root/linux-user/i386
AgeCommit message (Collapse)AuthorFilesLines
4 daysbsd-user, linux-user: introduce qemu_process_cpu_eventsPaolo Bonzini1-1/+1
Add a user-mode emulation version of the function. More will be added later, for now it is just process_queued_cpu_work. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-08-30linux-user: Rename elf_check_archRichard Henderson1-1/+1
Rename to elf_check_machine to match ELF_MACHINE. Remove the unnecessary definition for loongarch64. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-30linux-user: Standardize on ELF_MACHINE not ELF_ARCHRichard Henderson1-1/+1
PowerPC was the one outlier that defined both ELF_ARCH and ELF_MACHINE; ELF_ARCH was defined incorrectly, necessitating the definition of elf_check_arch. However, the elf file header field in question is called e_machine, so ELF_MACHINE is in fact the better name. Mechanically change most target/target_elf.h files, then adjust ppc/target_elf.h manually. Do not provide a default for ELF_MACHINE. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-30linux-user: Move elf parameters to {i386,x86_64}/target_elf.hRichard Henderson1-0/+22
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-30linux-user/i386: Expand target_elf_gregset_tRichard Henderson2-28/+22
The comment re ELF_NREG is incorrect or out-of-date. Make use of the fact that target_elf_gregset_t is a proper structure by using target_user_regs_struct. Drop target_elf_greg_t and tswapreg. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-30linux-user/i386: Create target_ptrace.hRichard Henderson2-18/+32
Remove the target_pt_regs structure from target_syscall.h. Add target_user_regs_struct to target_ptrace.h, which is what is actually used by ELF_CORE_COPY_REGS; the layout of the two structure definitions is identical. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-30linux-user: Move elf_core_copy_regs to {i386,x86_64}/elfload.cRichard Henderson2-0/+39
Move elf_core_copy_regs to elfload.c. Move HAVE_ELF_CORE_DUMP, ELF_NREGS, target_elf_gregset_t to target_elf.h. For now, duplicate the definitions of target_elf_greg_t and tswapreg. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-28linux-user/i386: Create init_main_threadRichard Henderson1-26/+22
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>
2025-08-28linux-user/i386: Return const data from get_elf_platformRichard Henderson1-8/+4
Rather than modify a static buffer, index into an array of const data. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-28linux-user: Move get_elf_platform to {i386,x86_64}/elfload.cRichard Henderson2-0/+14
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>
2025-08-28linux-user: Move get_elf_hwcap to {i386,x86_64}/elfload.cRichard Henderson2-0/+7
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>
2025-08-28linux-user: Move get_elf_cpu_model to target/elfload.cRichard Henderson2-4/+11
Rename from cpu_get_model to emphasize that this is an elf-specific function. Declare the function once in loader.h. This frees up target_elf.h for other uses. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-08-28linux-user: Create target/elfload.c filesRichard Henderson1-0/+1
Prepare to split the main linux-user/elfload.c. Create empty files for each target, and add the common build rule. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-02-18linux-user: Move TARGET_SA_RESTORER out of generic/signal.hAndreas Schwab1-0/+2
SA_RESTORER and the associated sa_restorer field of struct sigaction are an obsolete feature, not expected to be used by future architectures. They are also absent on RISC-V, LoongArch, Hexagon and OpenRISC, but defined due to their use of generic/signal.h. This leads to corrupted data and out-of-bounds accesses. Move the definition of TARGET_SA_RESTORER out of generic/signal.h into the target_signal.h files that need it. Note that m68k has the sa_restorer field, but does not use it and does not define SA_RESTORER. Reported-by: Thomas Weißschuh <thomas@t-8ch.de> Signed-off-by: Andreas Schwab <schwab@suse.de> Reviewed-by: Thomas Weißschuh <thomas@t-8ch.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <mvmed060xc9.fsf@suse.de>
2024-12-20user: Move 'linux-user/cpu_loop-common.h' -> 'user/cpu_loop.h'Philippe Mathieu-Daudé1-1/+1
"linux-user/cpu_loop-common.h" is generic enough to be used by bsd-user, so rename it as "user/cpu_loop.h". Mechanical change running: $ sed -i -e 's,cpu_loop-common.h,user/cpu_loop.h,' \ $(git grep -l cpu_loop-common.h) 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: <20241212185341.2857-17-philmd@linaro.org>
2024-12-20user: Forward declare target_cpu_copy_regs structurePhilippe Mathieu-Daudé1-1/+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: <20241212185341.2857-16-philmd@linaro.org>
2024-10-15linux-user/i386: Use explicit little-endian LD/ST APIPhilippe Mathieu-Daudé1-2/+2
The x86 architecture uses little endianness. Directly use the little-endian LD/ST API. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Message-Id: <20241003234211.53644-4-philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-10-13linux-user/i386: Emulate orig_axIlya Leoshkevich1-0/+3
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>
2024-09-27Merge tag 'pull-tcg-20240922' of https://gitlab.com/rth7680/qemu into stagingPeter Maydell1-9/+26
target/ppc: Fix lxvx/stxvx facility check linux-user: update syscall_nr.h to Linux v6.10 linux-user: update syscall.tbl to Linux v6.11 tcg: Fix iteration step in 32-bit gvec operation tcg: Propagate new TCGOp to add_as_label_use tcg/*: Do not expand cmp_vec, cmpsel_vec early tcg/optimize: Fold movcond with true and false values identical tcg/optimize: Optimize cmp_vec and cmpsel_vec tcg/optimize: Optimize bitsel_vec tcg/i386: Optimize cmpsel with constant 0 operand 3. tcg/i386: Implement cmp_vec with avx512 insns tcg/i386: Implement cmpsel_vec with avx512 insns tcg/i386: Implement vector TST{EQ,NE} for avx512 tcg/ppc: Implement cmpsel_vec and optimize with constant 0/-1 arguments tcg/s390x: Implement cmpsel_vec and optimize with constant 0/-1 arguments # -----BEGIN PGP SIGNATURE----- # # iQFQBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmbwBsIdHHJpY2hhcmQu # aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV/bzwf40V8fsRhfc8u/k2Xw # +bXyfyX7ydgB+82YoO71+Wy15ntmYmbL/6O9kGuJXWX8HRDrAR8Js9zDgveysw5m # m/EG+XAbVjYhjaoaaz2nfr+5auQoos9NoCji3s3UJln6sCuZ2Enl0DTFluoHZfgr # /YVAghJ4dwH0hfzO9kmsKmJ9I19HugMMN4dNvEcjQyDDUhgGGjkUaRtGNxwuiwuf # ArL2XhFauXgloryDmpUKQ0BJJ0t8rdPlaRJ8dHqJUnJwav0TW3QVXbrs8gOkmmbg # 9plYTC9DlTguQobvapCDVjiGy/6yuSF/AUpcdQbTRtTi3BrzhTydfLlOtI64GtaQ # OBKd # =ID/g # -----END PGP SIGNATURE----- # gpg: Signature made Sun 22 Sep 2024 13:00:02 BST # gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F # gpg: issuer "richard.henderson@linaro.org" # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full] # Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F * tag 'pull-tcg-20240922' of https://gitlab.com/rth7680/qemu: (31 commits) linux-user: update syscall.tbl to Linux v6.11 linux-user,loongarch: move to syscalltbl file linux-user,hexagon: move to syscalltbl file linux-user,riscv: move to syscalltbl file linux-user,openrisc: move to syscalltbl file linux-user,aarch64: move to syscalltbl file linux-user: update syscall.tbl to Linux v6.10 linux-user, mips: update syscall-args-o32.c.inc to Linux v6.10 linux-user: update syscall_nr.h to Linux v6.10 target/ppc: Fix lxvx/stxvx facility check tcg/s390x: Optimize cmpsel with constant 0/-1 arguments tcg/s390x: Implement cmpsel_vec tcg/ppc: Optimize cmpsel with constant 0/-1 arguments tcg/ppc: Implement cmpsel_vec tcg/i386: Implement vector TST{EQ,NE} for avx512 tcg/i386: Implement cmpsel_vec with avx512 insns tcg/i386: Add predicate parameters to tcg_out_evex_opc tcg/i386: Implement cmp_vec with avx512 insns tcg/i386: Optimize cmpsel with constant 0 operand 3. tcg/optimize: Optimize bitsel_vec ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-09-22linux-user: update syscall.tbl to Linux v6.11Laurent Vivier1-3/+4
Updated running scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-7-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-22linux-user: update syscall.tbl to Linux v6.10Laurent Vivier1-6/+22
Updated running scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240918074256.720617-4-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-09-20license: Update deprecated SPDX tag GPL-2.0 to GPL-2.0-onlyPhilippe Mathieu-Daudé1-1/+1
The 'GPL-2.0' license identifier has been deprecated since license list version 3.0 [1] and replaced by the 'GPL-2.0-only' tag [2]. [1] https://spdx.org/licenses/GPL-2.0.html [2] https://spdx.org/licenses/GPL-2.0-only.html Mechanical patch running: $ sed -i -e s/GPL-2.0/GPL-2.0-only/ \ $(git grep -l 'SPDX-License-Identifier: GPL-2.0[ $]' \ | egrep -v '^linux-headers|^include/standard-headers') Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-05-26target/i386: Pass host pointer and size to cpu_x86_{xsave,xrstor}Richard Henderson1-8/+12
We have already validated the memory region in the course of validating the signal frame. No need to do it again within the helper function. In addition, return failure when the header contains invalid xstate_bv. The kernel handles this via exception handling within XSTATE_OP within xrstor_from_user_sigframe. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26target/i386: Pass host pointer and size to cpu_x86_{fxsave,fxrstor}Richard Henderson1-8/+5
We have already validated the memory region in the course of validating the signal frame. No need to do it again within the helper function. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26target/i386: Pass host pointer and size to cpu_x86_{fsave,frstor}Richard Henderson1-2/+2
We have already validated the memory region in the course of validating the signal frame. No need to do it again within the helper function. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26target/i386: Convert do_xsave to X86AccessRichard Henderson1-1/+1
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Honor xfeatures in xrstor_sigcontextRichard Henderson1-1/+18
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Fix allocation and alignment of fp stateRichard Henderson1-214/+342
For modern cpus, the kernel uses xsave to store all extra cpu state across the signal handler. For xsave/xrstor to work, the pointer must be 64 byte aligned. Moreover, the regular part of the signal frame must be 16 byte aligned. Attempt to mirror the kernel code as much as possible. Use enum FPStateKind instead of use_xsave() and use_fxsr(). Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1648 Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Return boolean success from xrstor_sigcontextRichard Henderson1-8/+8
Invert the sense of the return value and use bool. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Return boolean success from restore_sigcontextRichard Henderson1-24/+23
Invert the sense of the return value and use bool. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Fix -mregparm=3 for signal deliveryRichard Henderson1-13/+11
Since v2.6.19, the kernel has supported -mregparm=3. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Split out struct target_fregs_stateRichard Henderson1-18/+25
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Replace target_fpstate_fxsave with X86LegacyXSaveAreaRichard Henderson1-45/+26
Use the structure definition from target/i386/cpu.h. The only minor quirk is re-casting the sw_reserved area to the OS specific struct target_fpx_sw_bytes. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Remove xfeatures from target_fpstate_fxsaveRichard Henderson1-2/+1
This is easily computed by advancing past the structure. At the same time, replace the magic number "64". Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26linux-user/i386: Drop xfeatures_size from sigcontext arithmeticRichard Henderson1-4/+3
This is subtracting sizeof(target_fpstate_fxsave) in TARGET_FXSAVE_SIZE, then adding it again via &fxsave->xfeatures. Perform the same computation using xstate_size alone. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-05-26target/i386: Add rbfm argument to cpu_x86_{xsave,xrstor}Richard Henderson1-2/+2
For now, continue to pass all 1's from signal.c. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-04-26exec: Move [b]tswapl() declarations to 'exec/user/tswap-target.h'Philippe Mathieu-Daudé1-0/+1
tswapl() and bswaptls() are target-dependent and only used by user emulation. Move their definitions to a new header: "exec/user/tswap-target.h". Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Anton Johansson <anjo@rev.ng> Message-Id: <20231212123401.37493-17-philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-03-13linux-user: Move tswap_siginfo out of target codeGustavo Romero1-3/+3
Move tswap_siginfo from target code to handle_pending_signal. This will allow some cleanups and having the siginfo ready to be used in gdbstub. Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org> Suggested-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240309030901.1726211-3-gustavo.romero@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2024-03-12bulk: Call in place single use cpu_env()Philippe Mathieu-Daudé1-2/+2
Avoid CPUArchState local variable when cpu_env() is used once. Mechanical patch using the following Coccinelle spatch script: @@ type CPUArchState; identifier env; expression cs; @@ { - CPUArchState *env = cpu_env(cs); ... when != env - env + cpu_env(cs) ... when != env } Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-ID: <20240129164514.73104-5-philmd@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
2023-10-30linux-user/i386: Add vdsoRichard Henderson7-0/+254
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1267 Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-10-04accel/tcg: Replace CPUState.env_ptr with cpu_env()Richard Henderson1-1/+1
Reviewed-by: Anton Johansson <anjo@rev.ng> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-09-01linux-user: Split out cpu/target_proc.hRichard Henderson1-0/+1
Move the various open_cpuinfo functions into new files. Move the m68k open_hardware function as well. All other guest architectures get a boilerplate empty file. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-08linux-user: Define ELF_ET_DYN_BASE in $guest/target_mman.hRichard Henderson1-0/+3
Copy each guest kernel's default value, then bound it against reserved_va or the host address space. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-08-08linux-user: Define TASK_UNMAPPED_BASE in $guest/target_mman.hRichard Henderson1-0/+13
Provide default values that are as close as possible to the values used by the guest's kernel. Tested-by: Helge Deller <deller@gmx.de> Reviewed-by: Helge Deller <deller@gmx.de> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2023-06-29target/i386: emulate 64-bit ring 0 for linux-user if LM feature is setPaolo Bonzini1-30/+27
32-bit binaries can run on a long mode processor even if the kernel is 64-bit, of course, and this can have slightly different behavior; for example, SYSCALL is allowed on Intel processors. Allow reporting LM to programs running under user mode emulation, so that "-cpu" can be used with named CPU models even for qemu-i386 and even without disabling LM by hand. Fortunately, most of the runtime code in QEMU has to depend on HF_LMA_MASK or on HF_CS64_MASK (which is anyway false for qemu-i386's 32-bit code segment) rather than TARGET_X86_64, therefore all that is needed is an update of linux-user's ring 0 setup. Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1534 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-06-26target/i386: implement SYSCALL/SYSRET in 32-bit emulatorsPaolo Bonzini1-4/+5
AMD supports both 32-bit and 64-bit SYSCALL/SYSRET, but the TCG only exposes it for 64-bit targets. For system emulation just reuse the helper; for user-mode emulation the ABI is the same as "int $80". The BSDs does not support any fast system call mechanism in 32-bit mode so add to bsd-user the same stub that FreeBSD has for 64-bit compatibility mode. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2023-03-10linux-user: fix bug about incorrect base addresss of gdt on i386 and x86_64fanwj@mail.ustc.edu.cn1-0/+9
On linux user mode, CPUX86State::gdt::base from Different CPUX86State Objects have same value, It is incorrect! Every CPUX86State::gdt::base Must points to independent memory space. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1405 Signed-off-by: fanwenjie <fanwj@mail.ustc.edu.cn> Message-Id: <4172b90.58b08.18631b77860.Coremail.fanwj@mail.ustc.edu.cn> [lv: remove unnecessary casts, split overlong line] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-10-25linux-user: Add guest memory layout to exception dumpHelge Deller1-4/+2
When the emulation stops with a hard exception it's very useful for debugging purposes to dump the current guest memory layout (for an example see /proc/self/maps) beside the CPU registers. The open_self_maps() function provides such a memory dump, but since it's located in the syscall.c file, various changes (add #includes, make this function externally visible, ...) are needed to be able to call it from the existing EXCP_DUMP() macro. This patch takes another approach by re-defining EXCP_DUMP() to call target_exception_dump(), which is in syscall.c, consolidates the log print functions and allows to add the call to dump the memory layout. Beside a reduced code footprint, this approach keeps the changes across the various callers minimal, and keeps EXCP_DUMP() highlighted as important macro/function. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <Y1bzAWbw07WBKPxw@p100> [lv: remove pc declaration and setting] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-10-11linux-user: i386/signal: support XSAVE/XRSTOR for signal frame fpstatePaolo Bonzini1-19/+100
Add support for saving/restoring extended save states when signals are delivered. This allows using AVX, MPX or PKRU registers in signal handlers. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-10-11linux-user: i386/signal: support FXSAVE fpstate on 32-bit emulationPaolo Bonzini1-51/+76
Linux can use FXSAVE to save/restore XMM registers even on 32-bit systems. This requires some care in order to keep the FXSAVE area aligned to 16 bytes; for this reason, get_sigframe is changed to pass the offset into the FXSAVE area rather than the full frame size. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
generated by cgit v1.1 at 2025-09-21 09:54:23 +0000