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2022-01-07bsd-user/arm/target_arch_cpu.h: Dummy target_cpu_loop implementationWarner Losh
Add a boiler plate CPU loop that does nothing except return an error for all traps. Signed-off-by: Sean Bruno <sbruno@FreeBSD.org> Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/arm/target_arch_cpu.h: Implement target_cpu_clone_regsWarner Losh
Implement target_cpu_clone_regs to clone the resister state on a fork. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/arm/target_arch_cpu.h: CPU Loop definitionsWarner Losh
target_arch_cpu.h is for CPU loop definitions. Create the file and define target_cpu_init and target_cpu_reset for arm. Signed-off-by: Olivier Houchard <cognet@ci0.org> Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/arm/target_arch_cpu.c: Target specific TLS routinesWarner Losh
Target specific TLS routines to get and set the TLS values. Signed-off-by: Kyle Evans <kevans@FreeBSD.org> Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/arm/target_syscall.h: Add copyright and update nameWarner Losh
The preferred name for the 32-bit arm is now armv7. Update the name to reflect that. In addition, add Stacey's copyright to this file and update the include guards to the new convention. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/arm/target_arch_sysarch.h: Use consistent include guardsWarner Losh
As part of upstreaming, the include guards have been made more consistent. Update this file to use the new guards. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/target_os_signal.h: Move signal prototypes to target_os_ucontext.hWarner Losh
Switch to the CPUArchState typedef and move target-provided prototypes to target_os_ucontext.h. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/x86_64: Move functions into signal.cWarner Losh
Move the current inline functions into sigal.c. This will increate the flexibility of implementation in the future. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/x86_64/target_arch_signal.h: Fill in mcontext_tWarner Losh
Fill in target_mcontext match the FreeBSD mcontext_t structure. Also define the size correctly. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/x86_64/target_arch_signal.h: use new target_os_ucontext.hWarner Losh
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/x86_64/target_arch_signal.h: Remove target_sigcontextWarner Losh
In FreeBSD, sigcontext was retired in favor of ucontext/mcontext. Remove vestigial target_sigcontext. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/i386: Move the inlines into signal.cWarner Losh
Move the (now stubbed out) inlines into bsd-user/i386/signal.c. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/i386/target_arch_signal.h: Update mcontext_t to match FreeBSDWarner Losh
Fill in target_mcontext_t to match the FreeBSD mcontex_t. Also tag the current size of mcontext and ucontext to enable size checking for i386. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/i386/target_arch_signal.h: use new target_os_ucontext.hWarner Losh
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/i386/target_arch_signal.h: Remove target_sigcontextWarner Losh
In FreeBSD, sigcontext was retired in favor of ucontext/mcontext. Remove vestigial target_sigcontext. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user: create a per-arch signal.c fileWarner Losh
Create a place-holder signal.c file for each of the architectures that are currently built. In the future, some code that's currently inlined in target_arch_signal.h will live here. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/freebsd: Create common target_os_ucontext.h fileWarner Losh
FreeBSD has a MI ucontext structure that contains the MD mcontext machine state and other things that are machine independent. Create an include file for all the ucontext stuff. It needs to be included in the arch specific files after target_mcontext is defined. This is largely copied from sys/_ucontext.h with the comments about layout removed because we don't support ancient FreeBSD binaries. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2022-01-07bsd-user/mips*: Remove mips supportWarner Losh
FreeBSD is dropping support for mips starting with FreeBSD 14. mips support has been removed from the bsd-user fork because updating it for new signal requirements will take too much time. Remove it here since it is a distraction. Signed-off-by: Warner Losh <imp@bsdimp.com> Acked-by: Richard Henderson <richard.henderson@linaro.org>
2021-12-20meson: Move bsd_user_ss to bsd-user/Richard Henderson
We have no need to reference bsd_user_ss outside of bsd-user. Go ahead and merge it directly into specific_ss. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-12-20common-user: Move safe-syscall.* from linux-userRichard Henderson
Move linux-user safe-syscall.S and safe-syscall-error.c to common-user so that bsd-user can also use it. Also move safe-syscall.h to include/user/. Since there is nothing here that is related to the guest, as opposed to the host, build it once. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-12-19bsd-user: Create special-errno.hRichard Henderson
Pull the internal errno used by qemu internally its own header file, for use by safe-syscall.S. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-12-19bsd-user: Rename TARGET_ERESTARTSYS to QEMU_ERESTARTSYSRichard Henderson
This value is fully internal to qemu, and so is not a TARGET define. We use this as an extra marker for both host and target errno. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-11-02bsd-user: Add stubs for new signal routinesWarner Losh
Until the signal support is merged from the bsd-user fork, we need stubs for cpu_loop_exit_sigsegv and cpu_loop_exit_sigbus to link. These call abort after logging a message. Since singals aren't supported here yet, this is sufficient. Signed-off-by: Warner Losh <imp@bsdimp.com> Message-Id: <20211102225248.52999-2-imp@bsdimp.com> Tested-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-18bsd-user/signal: Create a dummy signal queueing functionWarner Losh
Create dummy signal queueing function so we can start to integrate other architectures (at the cost of signals remaining broken) to tame the dependency graph a bit and to bring in signals in a more controlled fashion. Log unimplemented events to it in the mean time. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user: Rename sigqueue to qemu_sigqueueWarner Losh
To avoid a name clash with FreeBSD's sigqueue data structure in signalvar.h, rename sigqueue to qemu_sigqueue. This structure is currently defined, but unused. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/sysarch: Move to using do_freebsd_arch_sysarch interfaceWarner Losh
do_freebsd_arch_sysarch() exists in $ARCH/target_arch_sysarch.h for x86. Call it from do_freebsd_sysarch() and remove the mostly duplicate version in syscall.c. Future changes will move it to os-sys.c and support other architectures. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user: Add stop_all_tasksWarner Losh
Similar to the same function in linux-user: this stops all the current tasks. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user: Remove used from TaskStateWarner Losh
The 'used' field in TaskState is write only. Remove it from TaskState. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/target_os_elf: If ELF_HWCAP2 is defined, publish itWarner Losh
Some architectures publish AT_HWCAP2 as well as AT_HWCAP. Those architectures will define ELF_HWCAP2 in their target_arch_elf.h files for the value for this process. If it is defined, then publish it. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/target_os_elf.h: Remove fallback ELF_HWCAP and reorderWarner Losh
All architectures have a ELF_HWCAP, so remove the fallback ifdef. Place ELF_HWCAP in the same order as on native FreeBSD. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user: move TARGET_MC_GET_CLEAR_RET to target_os_signal.hWarner Losh
Move TARGET_MC_GET_CLEAR_RET to freebsd/target_os_signal.h since it's architecture agnostic on FreeBSD. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/errno_defs.h: Add internal error numbersStacey Son
To emulate signals and interrupted system calls, we need to have the same mechanisms we have in the kernel, including these errno values. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user: export get_errno and is_error from syscall.cWarner Losh
Make get_errno and is_error global so files other than syscall.c can use them. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user: TARGET_RESET define is unused, remove itWarner Losh
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/strace.list: Remove support for FreeBSD versions older than 12.0Warner Losh
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/target_os-user.h: Remove support for FreeBSD older than 12.0Warner Losh
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18meson: *-user: only descend into *-user when configuredWarner Losh
To increase flexibility, only descend into *-user when that is configured. This allows *-user to selectively include directories based on the host OS which may not exist on all hosts. Adopt Paolo's suggestion of checking the configuration in the directories that know about the configuration. Message-Id: <20210926220103.1721355-2-f4bug@amsat.org> Message-Id: <20210926220103.1721355-3-f4bug@amsat.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Warner Losh <wlosh@bsdimp.com> Acked-by: Paolo Bonzini <pbonzinni@redhat.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/mmap.c: assert that target_mprotect cannot failWarner Losh
Similar to the equivalent linux-user change 86abac06c14. All error conditions that target_mprotect checks are also checked by target_mmap. EACCESS cannot happen because we are just removing PROT_WRITE. ENOMEM should not happen because we are modifying a whole VMA (and we have bigger problems anyway if it happens). Fixes a Coverity false positive, where Coverity complains about target_mprotect's return value being passed to tb_invalidate_phys_range. Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/mmap.c: Implement MAP_EXCL, required by jemalloc in headKyle Evans
jemalloc requires a working MAP_EXCL. Ensure that no page is double mapped when specified. In addition, use guest_range_valid_untagged to test for valid ranges of pages rather than an incomplete inlined version of the test that might be wrong. Signed-off-by: Kyle Evans <kevans@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-10-18bsd-user/mmap.c: Don't mmap fd == -1 independently from MAP_ANON flagWarner Losh
Switch checks for !(flags & MAP_ANONYMOUS) with checks for fd != -1. MAP_STACK and MAP_GUARD both require fd == -1 and don't require mapping the fd either. Add analysis from Guy Yur detailing the different cases for MAP_GUARD and MAP_STACK. Signed-off-by: Guy Yur <guyyur@gmail.com> [ partially merged before, finishing the job and documenting origin] Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-18bsd-user/mmap.c: Convert to qemu_log logging for mmap debuggingWarner Losh
Convert DEBUG_MMAP to qemu_log CPU_LOG_PAGE. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-17bsd-user/mmap.c: mmap prefer MAP_ANON for BSDWarner Losh
MAP_ANON and MAP_ANONYMOUS are identical. Prefer MAP_ANON for BSD since the file is now a confusing mix of the two. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-17bsd-user/mmap.c: mmap return ENOMEM on overflowWarner Losh
mmap should return ENOMEM on len overflow rather than EINVAL. Return EINVAL when len == 0 and ENOMEM when the rounded to a page length is 0. Found by make check-tcg. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-17bsd-user/mmap.c: MAP_ symbols are defined, so no need for ifdefsWarner Losh
All these MAP_ symbols are always defined on supported FreeBSD versions (12.2 and newer), so remove the #ifdefs since they aren't needed. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-17bsd-user/mmap.c: check pread's return value to fix warnings with _FORTIFY_SOURCEMikaël Urankar
Simmilar to the equivalent linux-user: commit fb7e378cf9c, which added checking to pread's return value. Update to current qemu standards with {} around the if statement. Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-10-17bsd-user/mmap.c: Always zero MAP_ANONYMOUS memory in mmap_frag()Mikaël Urankar
Similar to the equivalent linux-user commit e6deac9cf99 When mapping MAP_ANONYMOUS memory fragments, still need notice about to set it zero, or it will cause issues. Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-09-14user: Remove cpu_get_pic_interrupt() stubsPhilippe Mathieu-Daudé
cpu_get_pic_interrupt() is now unreachable from user-mode, delete the unnecessary stubs. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210911165434.531552-25-f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-10bsd-user: Update mapping to handle reserved and starting conditionsWarner Losh
Update the reserved base based on what platform we're on, as well as the start of the mmap range. Update routines that find va ranges to interact with the reserved ranges as well as properly align the mapping (this is especially important for targets whose page size does not match the host's). Loop where appropriate when the initial address space offered by mmap does not meet the contraints. This has 18e80c55bb6 from linux-user folded in to the upstream bsd-user code as well. Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com> Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
2021-09-10bsd-user: Add '-0 argv0' option to bsd-user/main.cColin Percival
Previously it was impossible to emulate a program with a file name different from its argv[0]. With this change, you can run qemu -0 fakename realname args which runs the program "realname" with an argv of "fakename args". Signed-off-by: Colin Percival <cperciva@tarsnap.com> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2021-09-10bsd-user: Implement interlock for atomic operationsWarner Losh
Implement the internlock in fork_start() and fork_end() to properly cope with atomic operations and to safely keep state for parent and child processes. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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