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#!/bin/sh
# Test scenario from:
# Bug 265889 - sys.kern.basic_signal.trap_signal_test crashes bhyve in i386 VM
# Test scenario by: Li-Wen Hsu <lwhsu@FreeBSD.org>
cat > /tmp/signal2.c <<EOF
#include <stdio.h>
#include <signal.h>
#include <machine/psl.h>
#define SET_TRACE_FLAG(ucp) (ucp)->uc_mcontext.mc_eflags |= PSL_T
#define CLR_TRACE_FLAG(ucp) (ucp)->uc_mcontext.mc_eflags &= ~PSL_T
static volatile sig_atomic_t trap_signal_fired = 0;
static void
trap_sig_handler(int signo __unused, siginfo_t *info __unused, void *_ucp)
{
ucontext_t *ucp = _ucp;
if (trap_signal_fired < 9) {
SET_TRACE_FLAG(ucp);
} else {
CLR_TRACE_FLAG(ucp);
}
trap_signal_fired++;
}
int main() {
struct sigaction sa = {
.sa_sigaction = trap_sig_handler,
.sa_flags = SA_SIGINFO,
};
sigemptyset(&sa.sa_mask);
sigaction(SIGTRAP, &sa, NULL);
raise(SIGTRAP);
printf("test\n");
}
EOF
cc -o /tmp/signal2 -Wall -Wextra -O0 -m32 /tmp/signal2.c || exit 1
/tmp/signal2; s=$?
for i in `jot 30`; do
/tmp/signal2 &
done > /dev/null
wait
rm -f /tmp/signal2 /tmp/signal2.c
exit $s
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