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-rw-r--r--stdlib/tst-sigcontext.c312
1 files changed, 0 insertions, 312 deletions
diff --git a/stdlib/tst-sigcontext.c b/stdlib/tst-sigcontext.c
deleted file mode 100644
index 45b1a06a28..0000000000
--- a/stdlib/tst-sigcontext.c
+++ /dev/null
@@ -1,312 +0,0 @@
-/* Copyright (C) 2009 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
-
- 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, write to the Free
- Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
-
-#include <errno.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <ucontext.h>
-#include <unistd.h>
-
-static volatile ucontext_t ctx[3];
-static volatile int flags[3];
-static volatile int oflag;
-static volatile int flag;
-
-static volatile int sig_errno_set;
-static volatile int sig_errno;
-static volatile int sig_ready;
-
-static int was_in_f1;
-static int was_in_f2;
-
-static char st2[32768];
-
-static long long int max;
-static volatile long long int count;
-
-/* These have to be run with the caller's frame. */
-static inline int sig_getcontext (int) __attribute__ ((always_inline));
-static inline int sig_swapcontext (int, int) __attribute__ ((always_inline));
-
-static void
-sig_gethandler (int signo, siginfo_t *info, void *context)
-{
- ucontext_t *ucp = context;
-
- if (! sig_ready)
- {
- alarm (1);
- return;
- }
-
- ctx[flag] = *ucp;
- flags[flag] = 1;
-
- sig_errno_set = 1;
- sig_errno = 0;
-}
-
-static void
-sig_swaphandler (int signo, siginfo_t *info, void *context)
-{
- ucontext_t *oucp = context;
- ucontext_t *ucp = (ucontext_t *) (ctx + flag);
-
- if (! sig_ready)
- {
- alarm (1);
- return;
- }
-
- ctx[oflag] = *oucp;
- flags[oflag] = 1;
-
- sig_errno_set = 1;
- sig_errno = setcontext (ucp);
-}
-
-static int
-sig_getcontext (int uci)
-{
- struct sigaction sa;
-
- sigemptyset (&sa.sa_mask);
- sa.sa_flags = SA_SIGINFO;
- sa.sa_sigaction = sig_gethandler;
- if (sigaction (SIGALRM, &sa, NULL) < 0)
- {
- printf ("%s: sigaction ALRM failed: %m\n", __FUNCTION__);
- exit (1);
- }
-
- flag = uci;
- sig_errno_set = 0;
- sig_ready = 0;
- alarm (1);
-
- /* Need to get the signal in this frame. */
- sig_ready = 1;
- for (count = max; count > 0; count--)
- if (sig_errno_set)
- break;
-
- if (! sig_errno_set)
- {
- printf ("%s: ALRM signal not received\n", __FUNCTION__);
- exit (1);
- }
-
- return 0;
-}
-
-static int
-sig_swapcontext (int ouci, int uci)
-{
- struct sigaction sa;
-
- sigemptyset (&sa.sa_mask);
- sa.sa_flags = SA_SIGINFO;
- sa.sa_sigaction = sig_swaphandler;
- if (sigaction (SIGALRM, &sa, NULL) < 0)
- {
- printf ("%s: sigaction ALRM failed: %m\n", __FUNCTION__);
- exit (1);
- }
-
- flag = uci;
- oflag = ouci;
- sig_errno_set = 0;
- sig_ready = 0;
- alarm (1);
-
- /* Need to get the signal in this frame. */
- sig_ready = 1;
- for (count = max; count > 0; count--)
- if (sig_errno_set)
- break;
-
- if (! sig_errno_set)
- {
- printf ("%s: ALRM signal not received\n", __FUNCTION__);
- exit (1);
- }
-
- return sig_errno;
-}
-
-
-static void
-f1 (int a0, int a1, int a2, int a3)
-{
- int status;
-
- printf ("start f1(a0=%x,a1=%x,a2=%x,a3=%x)\n", a0, a1, a2, a3);
-
- if (a0 != 1 || a1 != 2 || a2 != 3 || a3 != -4)
- {
- puts ("arg mismatch");
- exit (-1);
- }
-
- status = sig_swapcontext (1, 2);
- if (status != 0)
- {
- printf ("%s: swapping contexts failed: %s\n",
- __FUNCTION__, strerror (status));
- exit (1);
- }
- puts ("finish f1");
- was_in_f1 = 1;
-}
-
-static void
-f2 (void)
-{
- int status;
-
- puts ("start f2");
-
- status = sig_swapcontext (2, 1);
- if (status != 0)
- {
- printf ("%s: swapping contexts failed: %s\n",
- __FUNCTION__, strerror (status));
- exit (1);
- }
- puts ("finish f2");
- was_in_f2 = 1;
-}
-
-
-static int back_in_main;
-
-static void
-check_called (void)
-{
- if (back_in_main == 0)
- {
- printf ("%s: program did not reach main again", __FUNCTION__);
- _exit (1);
- }
-}
-
-
-volatile int global;
-
-int
-main (void)
-{
- char st1[32768];
- time_t t0, t1;
- int status;
-
- atexit (check_called);
-
- puts ("calibrating delay loop");
- for (max = 0x10000; max < LLONG_MAX / 2; max *= 2)
- {
- t0 = time (NULL);
- for (count = max; count > 0; count--);
- t1 = time (NULL);
- if (difftime (t1, t0) > 10.0)
- break;
- }
-
- puts ("making contexts");
-
- sig_getcontext (1);
- if (! flags[1])
- {
- printf ("%s: context not retrieved\n", __FUNCTION__);
- exit (1);
- }
-
- /* Play some tricks with this context. */
- if (++global == 1)
- if (setcontext ((ucontext_t *) &ctx[1]) != 0)
- {
- if (errno == ENOSYS)
- {
- back_in_main = 1;
- exit (0);
- }
- printf ("%s: setcontext: %m\n", __FUNCTION__);
- exit (1);
- }
- if (global != 2)
- {
- printf ("%s: 'global' not incremented twice\n", __FUNCTION__);
- exit (1);
- }
-
- ctx[1].uc_stack.ss_sp = st1;
- ctx[1].uc_stack.ss_size = sizeof st1;
- ctx[1].uc_link = (ucontext_t *) &ctx[0];
- {
- ucontext_t tempctx = ctx[1];
- makecontext ((ucontext_t *) &ctx[1], (void (*) (void)) f1, 4, 1, 2, 3, -4);
-
- /* Without this check, a stub makecontext can make us spin forever. */
- if (memcmp (&tempctx, (void *) &ctx[1], sizeof ctx[1]) == 0)
- {
- puts ("makecontext was a no-op, presuming not implemented");
- return 0;
- }
- }
-
- sig_getcontext (2);
- if (! flags[2])
- {
- printf ("%s: second context not retrieved\n", __FUNCTION__);
- exit (1);
- }
-
- ctx[2].uc_stack.ss_sp = st2;
- ctx[2].uc_stack.ss_size = sizeof st2;
- ctx[2].uc_link = (ucontext_t *) &ctx[1];
- makecontext ((ucontext_t *) &ctx[2], f2, 0);
-
- puts ("swapping contexts");
- status = sig_swapcontext (0, 2);
- if (status != 0)
- {
- printf ("%s: swapping contexts failed: %s\n",
- __FUNCTION__, strerror (status));
- exit (1);
- }
- puts ("back at main program");
- back_in_main = 1;
-
- if (was_in_f1 == 0)
- {
- puts ("didn't reach f1");
- exit (1);
- }
- if (was_in_f2 == 0)
- {
- puts ("didn't reach f2");
- exit (1);
- }
-
- puts ("test succeeded");
- return 0;
-}
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