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/*-
* Copyright (c) 2021 Warner Losh <imp@bsdimp.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <atf-c.h>
#include <errno.h>
#include <signal.h>
#include <stdbool.h>
#include <stdlib.h>
static volatile sig_atomic_t signal_fired = 0;
static void
sig_handler(int signo, siginfo_t *info __unused, void *ucp __unused)
{
signal_fired++;
}
ATF_TC(signal_test);
ATF_TC_HEAD(signal_test, tc)
{
atf_tc_set_md_var(tc, "descr", "Testing delivery of a signal");
}
ATF_TC_BODY(signal_test, tc)
{
/*
* Setup the signal handlers
*/
struct sigaction sa = {
.sa_sigaction = sig_handler,
.sa_flags = SA_SIGINFO,
};
ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
ATF_REQUIRE(sigaction(SIGUSR1, &sa, NULL) == 0);
ATF_REQUIRE(sigaction(SIGUSR2, &sa, NULL) == 0);
ATF_REQUIRE(sigaction(SIGALRM, &sa, NULL) == 0);
/*
* Fire SIGUSR1
*/
ATF_CHECK(signal_fired == 0);
ATF_REQUIRE(raise(SIGUSR1) == 0);
ATF_CHECK(signal_fired == 1);
/*
* Fire SIGUSR2
*/
ATF_REQUIRE(raise(SIGUSR2) == 0);
ATF_CHECK(signal_fired == 2);
/*
* Fire SIGALRM after a timeout
*/
ATF_REQUIRE(alarm(1) == 0);
ATF_REQUIRE(pause() == -1);
ATF_REQUIRE(errno == EINTR);
ATF_CHECK(signal_fired == 3);
}
/*
* Special tests for 32-bit arm. We can call thumb code (really just t32) from
* normal (a32) mode and vice versa. Likewise, signals can interrupt a T32
* context with A32 code and vice versa. Make sure these all work with a simple
* test that raises the signal and ensures that it executed. No other platform
* has these requirements. Also note: we only support thumb2, so there's no T16
* vs T32 issues we have to test for.
*/
#ifdef __arm__
#define a32_isa __attribute__((target("arm")))
#define t32_isa __attribute__((target("thumb")))
static volatile sig_atomic_t t32_fired = 0;
static volatile sig_atomic_t a32_fired = 0;
a32_isa static void
sig_a32(int signo, siginfo_t *info __unused, void *ucp __unused)
{
a32_fired++;
}
t32_isa static void
sig_t32(int signo, siginfo_t *info __unused, void *ucp __unused)
{
t32_fired++;
}
ATF_TC(signal_test_T32_to_A32);
ATF_TC_HEAD(signal_test_T32_to_A32, tc)
{
atf_tc_set_md_var(tc, "descr", "Testing delivery of a signal from T32 to A32");
}
t32_isa ATF_TC_BODY(signal_test_T32_to_A32, tc)
{
/*
* Setup the signal handlers
*/
struct sigaction sa = {
.sa_sigaction = sig_a32,
.sa_flags = SA_SIGINFO,
};
ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
ATF_REQUIRE(sigaction(SIGUSR1, &sa, NULL) == 0);
ATF_REQUIRE((((uintptr_t)sig_a32) & 1) == 0); /* Make sure compiled as not thumb */
ATF_CHECK(a32_fired == 0);
ATF_REQUIRE(raise(SIGUSR1) == 0);
ATF_CHECK(a32_fired == 1);
}
ATF_TC(signal_test_A32_to_T32);
ATF_TC_HEAD(signal_test_A32_to_T32, tc)
{
atf_tc_set_md_var(tc, "descr", "Testing delivery of a signal from A32 to T32");
}
a32_isa ATF_TC_BODY(signal_test_A32_to_T32, tc)
{
/*
* Setup the signal handlers
*/
struct sigaction sa = {
.sa_sigaction = sig_t32,
.sa_flags = SA_SIGINFO,
};
ATF_REQUIRE(sigemptyset(&sa.sa_mask) == 0);
ATF_REQUIRE(sigaction(SIGUSR1, &sa, NULL) == 0);
ATF_REQUIRE((((uintptr_t)sig_t32) & 1) == 1); /* Make sure compiled as thumb */
ATF_CHECK(t32_fired == 0);
ATF_REQUIRE(raise(SIGUSR1) == 0);
ATF_CHECK(t32_fired == 1);
}
#endif
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, signal_test);
#ifdef __arm__
ATF_TP_ADD_TC(tp, signal_test_T32_to_A32);
ATF_TP_ADD_TC(tp, signal_test_A32_to_T32);
#endif
return (atf_no_error());
}
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