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/* Test the state save/restore procedures during signal handling.
Copyright (C) 2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <assert.h>
#include <pthread.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <mach/message.h>
#include <mach/gnumach.h>
#include <mach/mach_traps.h>
#include <mach-shortcuts.h>
#include <mach_init.h>
#include <hurd/io.h>
#include <hurd/io_reply.h>
#include <support/check.h>
#include <support/xthread.h>
#include "test-xstate.h"
static volatile bool loopflag = true;
void handler (int signum, siginfo_t *info, void *context)
{
char buf3[XSTATE_BUFFER_SIZE];
memset (buf3, 0x77, XSTATE_BUFFER_SIZE);
SET_XSTATE (buf3);
printf ("signal %d setting a different CPU state\n", signum);
loopflag = false;
}
/* Helper thread to send a signal to the main thread */
void* signal_sender (void *arg)
{
sigset_t ss;
assert (! sigemptyset (&ss));
assert (! sigaddset (&ss, SIGUSR1));
assert (! sigprocmask (SIG_BLOCK, &ss, NULL));
TEST_COMPARE (kill (getpid (), SIGUSR1), 0);
return NULL;
}
static int do_test (void)
{
#if ! XSTATE_HELPERS_SUPPORTED
FAIL_UNSUPPORTED ("Test not supported on this arch.");
#endif
struct sigaction act = { 0 };
act.sa_sigaction = &handler;
TEST_COMPARE (sigaction (SIGUSR1, &act, NULL), 0);
pthread_t thsender = xpthread_create (NULL, signal_sender, NULL);
char buf1[XSTATE_BUFFER_SIZE], buf2[XSTATE_BUFFER_SIZE];
memset (buf1, 0x33, XSTATE_BUFFER_SIZE);
SET_XSTATE (buf1);
while (loopflag)
;
GET_XSTATE (buf2);
TEST_COMPARE_BLOB (buf1, sizeof (buf1), buf2, sizeof (buf2));
xpthread_join (thsender);
return EXIT_SUCCESS;
}
#include <support/test-driver.c>
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