From a87cd2894cbd79b05972e168d0bdb51967dd9574 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 24 Dec 2009 13:34:05 -0800 Subject: Remove tst-sigcontext test. It's bogus in many places. --- stdlib/Makefile | 2 +- stdlib/tst-sigcontext.c | 312 ------------------------------------------------ 2 files changed, 1 insertion(+), 313 deletions(-) delete mode 100644 stdlib/tst-sigcontext.c (limited to 'stdlib') diff --git a/stdlib/Makefile b/stdlib/Makefile index 882302f..bb0661a 100644 --- a/stdlib/Makefile +++ b/stdlib/Makefile @@ -71,7 +71,7 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \ tst-atof1 tst-atof2 tst-strtod2 tst-strtod3 tst-rand48-2 \ tst-makecontext tst-strtod4 tst-strtod5 tst-qsort2 \ tst-makecontext2 tst-strtod6 tst-unsetenv1 \ - tst-makecontext3 tst-sigcontext + tst-makecontext3 include ../Makeconfig diff --git a/stdlib/tst-sigcontext.c b/stdlib/tst-sigcontext.c deleted file mode 100644 index 45b1a06..0000000 --- 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 . - - 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 -#include -#include -#include -#include -#include -#include -#include - -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; -} -- cgit v1.1