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* bsd-user/sycall.c: Now obsolete, removeWarner Losh2022-02-261-516/+0Star
| | | | | | Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user: Move system call building to os-syscall.cWarner Losh2022-02-262-1/+1
| | | | | Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/freebsd/os-syscall.c: Move syscall processing hereWarner Losh2022-02-261-0/+69
| | | | | | | | | | | | | | | | While there is some commonality between *BSD syscall processing, there's a number of differences and the system call numbers and ABIs have been independent since the late 90s. Move FreeBSD's proessing here and delete it. The upstream implementation is somewhat different than the current implementation. It will be much easier to upstream these from scratch, justifying the final result, rather than working out the diffs and justifying the changes. Also tweak a comment to qemu standard form. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user: Remove bsd_typeWarner Losh2022-02-262-9/+0Star
| | | | | | | | | | | | | Remove keeping track of which type of bsd we're running on. It's no longer referenced in the code. Building bsd-user on NetBSD or OpenBSD isn't possible, let alone running that code. Stop pretending that we can do the cross BSD thing since there's been a large divergence since 2000 that makes this nearly impossible between FreeBSD and {Net,Open}BSD and at least quite difficult between NetBSD and OpenBSD. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/x86_64/target_arch_thread.h: Assume a FreeBSD targetWarner Losh2022-02-261-3/+1Star
| | | | | | | | | | | | Since we can't run on anything else, assume for the moment that this is a FreeBSD target. In the future, we'll need to handle this properly via some include file in bsd-user/*bsd/x86_64/mumble.h. There's a number of other diffs that would be needed to make things work on OtherBSD, so it doesn't make sense to preseve this one detail today. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/target_arch_thread.h: Assume a FreeBSD targetWarner Losh2022-02-261-3/+1Star
| | | | | | | | | | | | Since we can't run on anything else, assume for the moment that this is a FreeBSD target. In the future, we'll need to handle this properly via some include file in bsd-user/*bsd/arm/mumble.h. There's a number of other diffs that would be needed to make things work on OtherBSD, so it doesn't make sense to preseve this one detail today. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/target_arch_cpu.h: Only support FreeBSD sys callsWarner Losh2022-02-261-73/+66Star
| | | | | | | | | | | Since we don't build on OpenBSD, only do FreeBSD system calls here. In the future, we'll need to move this to some place like bsd-user/freebsd/arm/mumble.h, but until then just leave this inline. This reflects changes to the upstream. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/i386/target_arch_cpu.h: Remove openbsd syscallWarner Losh2022-02-261-47/+37Star
| | | | | | | | | | This doesn't build on openbsd at the moment, and this could should arguably be in bsd-user/*bsd/i386 somewhere. Until we refactor to support OpenBSD/NetBSD again, drop it here. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/x86_64/target_arch_cpu.h: Remove openbsd syscallWarner Losh2022-02-261-19/+8Star
| | | | | | | | | | This doesn't build on openbsd at the moment, and this could should arguably be in bsd-user/*bsd/x86_64 somewhere. Until we refactor to support OpenBSD/NetBSD again, drop it here. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
* bsd-user/x86_64/target_arch_cpu.h: int $80 never was a BSD system call on amd64Warner Losh2022-02-261-58/+0Star
| | | | | | | | | Although initial versions of NetBSD did use int $80, it was replaced by syscall before any releases. OpenBSD and FreeBSD always did syscall. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/main.c: Drop syscall flavor arg -bsdWarner Losh2022-02-261-12/+0Star
| | | | | | | | | | We've not realistically been able to actually run any bsd program on any other bsd program. They are too diverged to do this easily. The current code is setup to do it, but implementing it is hard. Stop pretending that we can do this. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* exec/exec-all: Move 'qemu/log.h' include in units requiring itPhilippe Mathieu-Daudé2022-02-211-0/+1
| | | | | | | | | | | | | Many files use "qemu/log.h" declarations but neglect to include it (they inherit it via "exec/exec-all.h"). "exec/exec-all.h" is a core component and shouldn't be used that way. Move the "qemu/log.h" inclusion locally to each unit requiring it. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Thomas Huth <thuth@redhat.com> Message-Id: <20220207082756.82600-10-f4bug@amsat.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
* bsd-user/signal.c: Only copy the _capsicum for FreeBSD_version > 1400026Warner Losh2022-02-012-0/+10
| | | | | | | | | | The capsicum signal stuff is new with FreeBSD 14, rev 1400026, so only define QEMU_SI_CAPSICUM there. Only copy _capsicum when QEMU_SI_CAPSICUM is defined. Default to no info being passed for signals we make no guess about. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/freebsd/target_os_ucontext.h: Prefer env as arg name for ↵Warner Losh2022-01-311-3/+3
| | | | | | | CPUArchState args Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user: Rename arg name for target_cpu_reset to envWarner Losh2022-01-313-5/+5
| | | | | | | | Rename the parameter name for target_cpu_reset's CPUArchState * arg from cpu to env. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: do_sigaltstackWarner Losh2022-01-311-5/+67
| | | | | | | | | | | | Implement the meat of the sigaltstack(2) system call with do_sigaltstack. With that, all the stubbed out routines are complete, so remove now-incorrect comment. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: implement do_sigactionWarner Losh2022-01-312-0/+104
| | | | | | | | | | | Implement the meat of the sigaction(2) system call with do_sigaction and helper routiner block_signals (which is also used to implemement signal masking so it's global). Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: implement do_sigreturnWarner Losh2022-01-312-1/+57
| | | | | | | | | | | Implements the meat of a sigreturn(2) system call via do_sigreturn, and helper reset_signal_mask. Fix the prototype of do_sigreturn in qemu.h and remove do_rt_sigreturn since it's linux only. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: process_pending_signalsWarner Losh2022-01-281-1/+55
| | | | | | | | | Process the currently queued signals. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: tswap_siginfoWarner Losh2022-01-281-0/+53
| | | | | | | | | Convert siginfo from targer to host. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: handle_pending_signalWarner Losh2022-01-282-0/+94
| | | | | | | | | Handle a queued signal. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: setup_frameWarner Losh2022-01-283-1/+90
| | | | | | | | | | setup_frame sets up a signalled stack frame. Associated routines to extract the pointer to the stack frame and to support alternate stacks. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: sigset manipulation routines.Warner Losh2022-01-282-0/+76
| | | | | | | | | | | | | | | target_sigemptyset: resets a set to having no bits set target_sigaddset: adds a signal to a set target_sigismember: returns true when signal is a member host_to_target_sigset_internal: convert host sigset to target host_to_target_sigset: convert host sigset to target target_to_host_sigset_internal: convert target sigset to host target_to_host_sigset: convert target sigset to host Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: Fill in queue_signalWarner Losh2022-01-282-1/+17
| | | | | | | | | | Fill in queue signal implementation, as well as routines allocate and delete elements of the signal queue. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: Implement dump_core_and_abortWarner Losh2022-01-282-0/+77
| | | | | | | | | | Force delivering a signal and generating a core file. It's a global function for the moment... Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/strace.c: print_taken_signalWarner Losh2022-01-282-0/+107
| | | | | | | | | | print_taken_signal() prints signals when we're tracing signals. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: Implement host_signal_handlerWarner Losh2022-01-281-0/+105
| | | | | | | | | | Implement host_signal_handler to handle signals generated by the host and to do safe system calls. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: Implement rewind_if_in_safe_syscallWarner Losh2022-01-282-1/+14
| | | | | | | Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: host_to_target_siginfo_noswapWarner Losh2022-01-281-0/+113
| | | | | | | | | Implement conversion of host to target siginfo. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user: Add trace events for bsd-userWarner Losh2022-01-283-0/+13
| | | | | | | | | | | Add the bsd-user specific events and infrastructure. Only include the linux-user trace events for linux-user, not bsd-user. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user: Add host signals to the buildWarner Losh2022-01-281-0/+1
| | | | | | | | Start to add the host signal functionality to the build. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/host/x86_64/host-signal.h: Implement host_signal_*Warner Losh2022-01-281-0/+37
| | | | | | | | | | Implement host_signal_pc, host_signal_set_pc and host_signal_write for x86_64. Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/host/i386/host-signal.h: Implement host_signal_*Warner Losh2022-01-281-0/+37
| | | | | | | | | | Implement host_signal_pc, host_signal_set_pc and host_signal_write for i386. Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/host/arm/host-signal.h: Implement host_signal_*Warner Losh2022-01-281-0/+35
| | | | | | | | | Implement host_signal_pc, host_signal_set_pc and host_signal_write for arm. Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: Add si_type argument to queue_signalWarner Losh2022-01-282-3/+28
| | | | | | | | | | | | | | | | Mirror the linux-user practice and add a si_type argument to queue signal. This will be transported as the upper 8 bits in the si_type element of siginfo so that we know what bits of the structure are valid and so we can properly implement host_to_target_siginfo_noswap and tswap_siginfo. Adapt the one caller of queue_signal to the new interface. Use all the same names as Linux (except _RT which we don't treat differently, unlike Linux), though some are unused. Place this into signal-common.h since that's a better place given bsd-user's structure. Move prototype of queue_signal to signal-common.h to mirror linux-user's location. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: Implement signal_init()Warner Losh2022-01-282-0/+74
| | | | | | | | | | | | | Initialize the signal state for the emulator. Setup a set of sane default signal handlers, mirroring the host's signals. For fatal signals (those that exit by default), establish our own set of signal handlers. Stub out the actual signal handler we use for the moment. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> XXX SIGPROF PENDING
* bsd-user/signal.c: implement abstract target / host signal translationWarner Losh2022-01-282-0/+18
| | | | | | | | | | Implement host_to_target_signal and target_to_host_signal. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/target_arch_cpu.h: Implement data faultsWarner Losh2022-01-281-10/+35
| | | | | | | | | Update for the richer set of data faults that are now possible. Copied largely from linux-user/arm/cpu_loop.c, with minor typo fixes. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/target_arch_cpu.h: Use force_sig_fault for EXCP_UDEFWarner Losh2022-01-281-12/+13
| | | | | | | | | | | | Use force_sig_fault to implement unknown opcode. This just uninlines that function, so simplify things by using it. Fold in EXCP_NOCP and EXCP_INVSTATE, as is done in linux-user. Make a note about slight differences with FreeBSD in case any of them turn out to be important later. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/target_arch_cpu.h: Correct code pointerWarner Losh2022-01-281-1/+1
| | | | | | | | | The code has moved in FreeBSD since the emulator was started, update the comment to reflect that change. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/arget_arch_cpu.h: Move EXCP_DEBUG and EXCP_BKPT togetherWarner Losh2022-01-281-20/+2Star
| | | | | | | | | | | | Implement EXCP_DEBUG and EXCP_BKPT the same, as is done in linux-user. The prior adjustment of register 15 isn't needed, so remove that. Remove a redunant comment (that code in FreeBSD never handled break points). It's unclear why BKPT was an alias for system calls, but FreeBSD doesn't do that today. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: implement cpu_loop_exit_sigbusWarner Losh2022-01-281-3/+9
| | | | | | | | | | | First attempt at implementing cpu_loop_exit_sigbus, mostly copied from linux-user version of this function. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: Implement cpu_loop_exit_sigsegvWarner Losh2022-01-281-3/+12
| | | | | | | | | | | First attempt at implementing cpu_loop_exit_sigsegv, mostly copied from linux-user version of this function. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal-common.h: Move signal functions prototypes to hereWarner Losh2022-01-285-8/+9
| | | | | Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/signal.c: implement force_sig_faultWarner Losh2022-01-282-0/+32
| | | | | | | | | | | | | Start to implement the force_sig_fault code. This currently just calls queue_signal(). The bsd-user fork version of that will handle this the synchronous nature of this call. Add signal-common.h to hold signal helper functions like force_sig_fault. Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@freebsd.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/target_arch_cpu.h: Move EXCP_ATOMIC to match linux-userWarner Losh2022-01-281-3/+3
| | | | | | | | | Move the EXCP_ATOMIC case to match linux-user/arm/cpu_loop.c:cpu_loop ordering. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user: Bring in docs from linux-user for signal_pendingWarner Losh2022-01-281-1/+8
| | | | | | | This is currently unused, so no code adjustments are needed. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user: Remove vestiges of signal queueing codeWarner Losh2022-01-282-20/+2Star
| | | | | | | | | | bsd-user was copied from linux-user at a time when it queued signals. Remove those vestiges of thse code. Retain the init function, even though it's now empty since other stuff will likely be added there. Make it static since it's not called from outside of main.c Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/signal.c: get_mcontext should zero vfp dataWarner Losh2022-01-281-0/+9
| | | | | | | | | | FreeBSD's get_mcontext doesn't return any vfp data. Instead, it zeros out the vfp feilds (and all the spare fields). Impelement this behavior. We're still missing the sysarch(ARM_GET_VFPCONTEXT) syscall, though. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* bsd-user/arm/signal.c: Implement setup_sigframe_arch for armWarner Losh2022-01-281-17/+33
| | | | | | | | | | | Fix the broken context setting for arm. FreeBSD's get_mcontext does not fill in the vfp info. It's filled in in sigframe(). This corresponds to the new setup_sigframe_arch which fills in mcontext, then adjusts it to point to the vfp context in the sigframe and fills in that context as well. Add pointer to where this code is done. Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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