mirror of
https://github.com/tobast/libunwind-eh_elf.git
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285 lines
7.4 KiB
C
285 lines
7.4 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/* The setjmp()/longjmp(), sigsetjmp()/siglongjmp(). */
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#include "compiler.h"
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#include <setjmp.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int nerrors;
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int verbose;
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static jmp_buf jbuf;
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static sigjmp_buf sigjbuf;
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static sigset_t sigset4;
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void
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raise_longjmp (jmp_buf jbuf, int i, int n)
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{
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while (i < n)
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raise_longjmp (jbuf, i + 1, n);
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longjmp (jbuf, n);
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}
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void
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test_setjmp (void)
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{
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volatile int i;
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jmp_buf jbuf;
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int ret;
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for (i = 0; i < 10; ++i)
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{
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if ((ret = setjmp (jbuf)))
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{
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if (verbose)
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printf ("%s: secondary setjmp () return, ret=%d\n",
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__FUNCTION__, ret);
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if (ret != i + 1)
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{
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fprintf (stderr, "%s: setjmp() returned %d, expected %d\n",
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__FUNCTION__, ret, i + 1);
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++nerrors;
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}
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continue;
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}
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if (verbose)
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printf ("%s.%d: done with setjmp(); calling children\n",
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__FUNCTION__, i + 1);
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raise_longjmp (jbuf, 0, i + 1);
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fprintf (stderr, "%s: raise_longjmp() returned unexpectedly\n",
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__FUNCTION__);
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++nerrors;
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}
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}
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void
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raise_siglongjmp (sigjmp_buf jbuf, int i, int n)
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{
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while (i < n)
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raise_siglongjmp (jbuf, i + 1, n);
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siglongjmp (jbuf, n);
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}
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void
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test_sigsetjmp (void)
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{
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sigjmp_buf jbuf;
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volatile int i;
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int ret;
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for (i = 0; i < 10; ++i)
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{
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if ((ret = sigsetjmp (jbuf, 1)))
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{
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if (verbose)
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printf ("%s: secondary sigsetjmp () return, ret=%d\n",
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__FUNCTION__, ret);
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if (ret != i + 1)
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{
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fprintf (stderr, "%s: sigsetjmp() returned %d, expected %d\n",
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__FUNCTION__, ret, i + 1);
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++nerrors;
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}
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continue;
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}
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if (verbose)
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printf ("%s.%d: done with sigsetjmp(); calling children\n",
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__FUNCTION__, i + 1);
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raise_siglongjmp (jbuf, 0, i + 1);
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fprintf (stderr, "%s: raise_siglongjmp() returned unexpectedly\n",
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__FUNCTION__);
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++nerrors;
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}
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}
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void
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sighandler (int signal)
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{
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if (verbose)
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printf ("%s: got signal %d\n", __FUNCTION__, signal);
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sigprocmask (SIG_BLOCK, NULL, (sigset_t *) &sigset4);
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if (verbose)
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printf ("%s: back from sigprocmask\n", __FUNCTION__);
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siglongjmp (sigjbuf, 1);
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printf ("%s: siglongjmp() returned unexpectedly!\n", __FUNCTION__);
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}
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int
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main (int argc, char **argv UNUSED)
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{
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volatile sigset_t sigset1, sigset2, sigset3;
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volatile struct sigaction act;
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if (argc > 1)
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verbose = 1;
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sigemptyset ((sigset_t *) &sigset1);
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sigaddset ((sigset_t *) &sigset1, SIGUSR1);
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sigemptyset ((sigset_t *) &sigset2);
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sigaddset ((sigset_t *) &sigset2, SIGUSR2);
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memset ((void *) &act, 0, sizeof (act));
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act.sa_handler = sighandler;
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sigaction (SIGTERM, (struct sigaction *) &act, NULL);
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test_setjmp ();
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test_sigsetjmp ();
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/* _setjmp() MUST NOT change signal mask: */
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset1, NULL);
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if (_setjmp (jbuf))
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{
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sigemptyset ((sigset_t *) &sigset3);
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sigprocmask (SIG_BLOCK, NULL, (sigset_t *) &sigset3);
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if (memcmp ((sigset_t *) &sigset3, (sigset_t *) &sigset2,
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sizeof (sigset_t)) != 0)
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{
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fprintf (stderr, "FAILURE: _longjmp() manipulated signal mask!\n");
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++nerrors;
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}
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else if (verbose)
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printf ("OK: _longjmp() seems not to change signal mask\n");
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}
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else
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{
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset2, NULL);
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_longjmp (jbuf, 1);
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}
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/* sigsetjmp(jbuf, 1) MUST preserve signal mask: */
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset1, NULL);
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if (sigsetjmp (sigjbuf, 1))
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{
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sigemptyset ((sigset_t *) &sigset3);
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sigprocmask (SIG_BLOCK, NULL, (sigset_t *) &sigset3);
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if (memcmp ((sigset_t *) &sigset3, (sigset_t *) &sigset1,
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sizeof (sigset_t)) != 0)
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{
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fprintf (stderr,
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"FAILURE: siglongjmp() didn't restore signal mask!\n");
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++nerrors;
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}
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else if (verbose)
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printf ("OK: siglongjmp() restores signal mask when asked to\n");
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}
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else
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{
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset2, NULL);
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siglongjmp (sigjbuf, 1);
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}
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/* sigsetjmp(jbuf, 0) MUST NOT preserve signal mask: */
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset1, NULL);
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if (sigsetjmp (sigjbuf, 0))
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{
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sigemptyset ((sigset_t *) &sigset3);
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sigprocmask (SIG_BLOCK, NULL, (sigset_t *) &sigset3);
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if (memcmp ((sigset_t *) &sigset3, (sigset_t *) &sigset2,
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sizeof (sigset_t)) != 0)
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{
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fprintf (stderr,
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"FAILURE: siglongjmp() changed signal mask!\n");
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++nerrors;
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}
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else if (verbose)
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printf ("OK: siglongjmp() leaves signal mask alone when asked to\n");
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}
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else
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{
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset2, NULL);
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siglongjmp (sigjbuf, 1);
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}
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/* sigsetjmp(jbuf, 1) MUST preserve signal mask: */
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset1, NULL);
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if (sigsetjmp (sigjbuf, 1))
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{
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sigemptyset ((sigset_t *) &sigset3);
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sigprocmask (SIG_BLOCK, NULL, (sigset_t *) &sigset3);
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if (memcmp ((sigset_t *) &sigset3, (sigset_t *) &sigset1,
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sizeof (sigset_t)) != 0)
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{
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fprintf (stderr,
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"FAILURE: siglongjmp() didn't restore signal mask!\n");
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++nerrors;
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}
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else if (verbose)
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printf ("OK: siglongjmp() restores signal mask when asked to\n");
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}
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else
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{
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset2, NULL);
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kill (getpid (), SIGTERM);
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fprintf (stderr, "FAILURE: unexpected return from kill()\n");
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++nerrors;
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}
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/* sigsetjmp(jbuf, 0) MUST NOT preserve signal mask: */
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset1, NULL);
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if (sigsetjmp (sigjbuf, 0))
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{
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sigemptyset ((sigset_t *) &sigset3);
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sigprocmask (SIG_BLOCK, NULL, (sigset_t *) &sigset3);
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if (memcmp ((sigset_t *) &sigset3, (sigset_t *) &sigset4,
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sizeof (sigset_t)) != 0)
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{
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fprintf (stderr,
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"FAILURE: siglongjmp() changed signal mask!\n");
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++nerrors;
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}
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else if (verbose)
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printf ("OK: siglongjmp() leaves signal mask alone when asked to\n");
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}
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else
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{
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sigprocmask (SIG_SETMASK, (sigset_t *) &sigset2, NULL);
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kill (getpid (), SIGTERM);
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fprintf (stderr, "FAILURE: unexpected return from kill()\n");
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++nerrors;
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}
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if (nerrors > 0)
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{
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fprintf (stderr, "FAILURE: detected %d failures\n", nerrors);
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exit (-1);
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}
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if (verbose)
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printf ("SUCCESS\n");
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return 0;
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}
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