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bsd-user/signal.c: Fill in queue_signal

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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>
This commit is contained in:
Warner Losh 2022-01-08 21:15:11 -07:00
parent 3771454783
commit 38be620c95
2 changed files with 17 additions and 1 deletions
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5
bsd-user/qemu.h
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@ -85,6 +85,11 @@ typedef struct TaskState {
struct bsd_binprm *bprm;
struct image_info *info;
struct emulated_sigtable sync_signal;
/*
* TODO: Since we block all signals while returning to the main CPU
* loop, this needn't be an array
*/
struct emulated_sigtable sigtab[TARGET_NSIG];
/*
* Nonzero if process_pending_signals() needs to do something (either

13
bsd-user/signal.c
View File

@ -255,7 +255,18 @@ static void QEMU_NORETURN dump_core_and_abort(int target_sig)
void queue_signal(CPUArchState *env, int sig, int si_type,
target_siginfo_t *info)
{
qemu_log_mask(LOG_UNIMP, "No signal queueing, dropping signal %d\n", sig);
CPUState *cpu = env_cpu(env);
TaskState *ts = cpu->opaque;
trace_user_queue_signal(env, sig);
info->si_code = deposit32(info->si_code, 24, 8, si_type);
ts->sync_signal.info = *info;
ts->sync_signal.pending = sig;
/* Signal that a new signal is pending. */
qatomic_set(&ts->signal_pending, 1);
return;
}
static int fatal_signal(int sig)