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* linux-user: Populate sigreturn_region_{start,end} in all vdso.SRichard Henderson2025-09-232-0/+2
| | | | | | | Mark the regions which contain sigreturn syscalls within each vdso. Rebuild the shared objects. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user, linux-user: introduce qemu_process_cpu_eventsPaolo Bonzini2025-09-171-1/+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>
* linux-user: Rename elf_check_archRichard Henderson2025-08-301-1/+0
| | | | | | | | 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>
* linux-user: Standardize on ELF_MACHINE not ELF_ARCHRichard Henderson2025-08-301-1/+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>
* linux-user: Move elf parameters to loongarch64/target_elf.hRichard Henderson2025-08-301-0/+6
| | | | | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/loongarch64: Expand target_elf_gregset_tRichard Henderson2025-08-302-14/+7
| | | | | | | | | | | | Make use of the fact that target_elf_gregset_t is a proper structure. Note that the kernel's uses an array, and then it has a bunch of defines to create symbolic offsets. Modulo some reserved fields, which we do not implement here, this is the same layout as struct user_pt_regs. Drop ELF_NREG, target_elf_greg_t, and tswapreg. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/loongarch64: Create target_ptrace.hRichard Henderson2025-08-302-23/+15
| | | | | | | | | Remove the target_pt_regs structure from target_syscall.h. Add target_user_pt_regs to target_ptrace.h, which matches what is actually used on loongarch64. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move elf_core_copy_regs to loongarch64/elfload.cRichard Henderson2025-08-302-0/+30
| | | | | | | | | 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>
* linux-user/loongarch64: Create init_main_threadRichard Henderson2025-08-281-7/+4
| | | | | | | | | | | | 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/loongarch64: Create get_elf_platformRichard Henderson2025-08-282-0/+6
| | | | | | | 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_hwcap to loongarch64/elfload.cRichard Henderson2025-08-282-0/+49
| | | | | | | 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_cpu_model to target/elfload.cRichard Henderson2025-08-282-4/+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>
* linux-user: Create target/elfload.c filesRichard Henderson2025-08-281-0/+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>
* linux-user/loongarch64: Decode BRK break codes for FPE signalsWANG Rui2025-04-241-1/+24
| | | | | | | | | | | | | | | | Handle specific LoongArch BRK break codes in user-mode emulation to deliver accurate floating-point exception signals. Specifically, BRK_OVERFLOW (6) triggers TARGET_FPE_INTOVF, and BRK_DIVZERO (7) triggers TARGET_FPE_INTDIV. Other BRK codes fall back to a generic SIGTRAP. This improves correctness for programs that rely on BRK to signal overflow or divide-by-zero conditions. Signed-off-by: WANG Rui <wangrui@loongson.cn> Acked-by: Song Gao <gaosong@loongson.cn> Message-Id: <20250414074952.6253-1-wangrui@loongson.cn> Signed-off-by: Song Gao <gaosong@loongson.cn>
* user: Move 'linux-user/cpu_loop-common.h' -> 'user/cpu_loop.h'Philippe Mathieu-Daudé2024-12-201-1/+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>
* user: Forward declare target_cpu_copy_regs structurePhilippe 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: <20241212185341.2857-16-philmd@linaro.org>
* linux-user/loongarch64: Reduce vdso alignment to 4kRichard Henderson2024-11-162-1/+2
| | | | | | | Reduce vdso alignment to minimum page size. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user,loongarch: move to syscalltbl fileLaurent Vivier2024-09-224-324/+440
| | | | | | | | | | | | | | | | | Since kernel v6.11 loongarch has moved from syscall_nr.h file to syscall.tbl (26a3b85bac08 ("loongarch: convert to generic syscall table")) Update linux-user scripts to be able to retrieve syscall numbers from linux syscall.tbl instead of syscall_nr.h. New syscall.tbl is imported from linux v6.11 using updated scripts/update-syscalltbl.sh Remove scripts/gensyscalls.sh that is now useless. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-ID: <20240920151034.859533-6-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: update syscall_nr.h to Linux v6.10Laurent Vivier2024-09-221-1/+13
| | | | | | | | | Automatically generated using scripts/gensyscalls.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Brian Cain <bcain@quicinc.com> Message-ID: <20240918074256.720617-2-laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Move tswap_siginfo out of target codeGustavo Romero2024-03-131-1/+1
| | | | | | | | | | | 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>
* linux-user/loongarch64: Remove TARGET_FORCE_SHMLBARichard Henderson2024-02-291-7/+0
| | | | | | | | | | | | | | | The kernel abi was changed with commit d23b77953f5a4fbf94c05157b186aac2a247ae32 Author: Huacai Chen <chenhuacai@kernel.org> Date: Wed Jan 17 12:43:08 2024 +0800 LoongArch: Change SHMLBA from SZ_64K to PAGE_SIZE during the v6.8 cycle. Reviewed-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/loongarch64: Add LASX sigcontext save/restoreSong Gao2023-11-031-6/+62
| | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231101030816.2353416-7-gaosong@loongson.cn>
* linux-user/loongarch64: Add LSX sigcontext save/restoreSong Gao2023-11-031-20/+87
| | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231101030816.2353416-6-gaosong@loongson.cn>
* linux-user/loongarch64: Use abi_{ulong,uint} typesSong Gao2023-11-031-12/+12
| | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231101030816.2353416-5-gaosong@loongson.cn>
* linux-user/loongarch64: setup_sigframe() set 'end' context size 0Song Gao2023-11-031-1/+1
| | | | | | | | | | | See: https://github.com/torvalds/linux/blob/master/arch/loongarch/kernel/signal.c The kernel setup_sigcontext() set end context size 0. Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231101030816.2353416-4-gaosong@loongson.cn>
* linux-user/loongarch64: Fix setup_extcontext alloc wrong fpu_context sizeSong Gao2023-11-031-1/+1
| | | | | | | | | | | See: https://github.com/torvalds/linux/blob/master/arch/loongarch/kernel/signal.c The alloc size is sizeof(struct target_fpu_context). Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231101030816.2353416-3-gaosong@loongson.cn>
* linux-user/loongarch64: Use traps to track LSX/LASX usageRichard Henderson2023-11-031-0/+13
| | | | | | Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20231101030816.2353416-2-gaosong@loongson.cn> Signed-off-by: Song Gao <gaosong@loongson.cn>
* linux-user/loongarch64: Add vdsoRichard Henderson2023-10-307-1/+242
| | | | | | | | | | | Requires a relatively recent binutils version in order to avoid spurious R_LARCH_NONE relocations. The presence of these relocs are diagnosed by our gen-vdso tool. Tested-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* target/loongarch: Add LASX data supportSong Gao2023-09-201-0/+1
| | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20230914022645.1151356-12-gaosong@loongson.cn>
* linux-user: Split out cpu/target_proc.hRichard Henderson2023-09-011-0/+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>
* linux-user: Define ELF_ET_DYN_BASE in $guest/target_mman.hRichard Henderson2023-08-081-0/+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>
* linux-user: Define TASK_UNMAPPED_BASE in $guest/target_mman.hRichard Henderson2023-08-081-0/+8
| | | | | | | | | | | 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>
* target/loongarch: Add LSX data type VRegSong Gao2023-05-061-2/+2
| | | | | | Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Song Gao <gaosong@loongson.cn> Message-Id: <20230504122810.4094787-2-gaosong@loongson.cn>
* linux-user: Provide MADV_* definitionsIlya Leoshkevich2022-09-271-0/+1
| | | | | | | | | | | Provide MADV_* definitions using target_mman.h header, similar to what kernel does. Most architectures use the same values, with the exception of alpha and hppa. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220906000839.1672934-2-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* target/loongarch: Update gdb_set_fpu() and gdb_get_fpu()Song Gao2022-08-051-22/+2
| | | | | | | | | | GDB LoongArch fpu use fcc register, update gdb_set_fpu() and gdb_get_fpu() to match it. Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20220805033523.1416837-6-gaosong@loongson.cn>
* linux-user: Add LoongArch cpu_loop supportSong Gao2022-07-042-0/+130
| | | | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220624031049.1716097-6-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Add LoongArch syscall supportSong Gao2022-07-042-0/+360
| | | | | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220624031049.1716097-5-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Add LoongArch elf supportSong Gao2022-07-041-0/+12
| | | | | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220624031049.1716097-4-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Add LoongArch signal supportSong Gao2022-07-042-0/+348
| | | | | | | | | Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Message-Id: <20220624031049.1716097-3-gaosong@loongson.cn> [rth: Rework extctx frame allocation and locking; Properly read/write fcc from signal frame.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Add LoongArch generic header filesSong Gao2022-07-047-0/+68
This includes: - sockbits.h - target_errno_defs.h - target_fcntl.h - termbits.h - target_resource.h - target_structs.h Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: WANG Xuerui <git@xen0n.name> Message-Id: <20220624031049.1716097-2-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>