diff options
author | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2011-12-08 23:01:30 +0000 |
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committer | joseph <joseph@7b3dc134-2b1b-0410-93df-9e9f96275f8d> | 2011-12-08 23:01:30 +0000 |
commit | a179b968417641981213cfe422c741141d8394e4 (patch) | |
tree | 61da9cd0c4db98517be8ea11b886e01bf2f74ed8 | |
parent | 5730be7cb430e4cfaec073632bdfb6e52e64a944 (diff) |
libc:
* debug/tst-backtrace6.c: New test.
* debug/Makefile (LDFLAGS-tst-backtrace6): Define.
(tests-$(OPTION_EGLIBC_BACKTRACE)): Add new tst-backtrace6.
* sysdeps/sh/Makefile (CFLAGS-tst-backtrace6.c): Define.
ports:
* sysdeps/arm/eabi/Makefile (CFLAGS-tst-backtrace6.c): Define.
git-svn-id: svn://svn.eglibc.org/trunk@16143 7b3dc134-2b1b-0410-93df-9e9f96275f8d
-rw-r--r-- | libc/ChangeLog.eglibc | 7 | ||||
-rw-r--r-- | libc/debug/Makefile | 3 | ||||
-rw-r--r-- | libc/debug/tst-backtrace6.c | 152 | ||||
-rw-r--r-- | libc/sysdeps/sh/Makefile | 1 | ||||
-rw-r--r-- | ports/ChangeLog.eglibc | 4 | ||||
-rw-r--r-- | ports/sysdeps/arm/eabi/Makefile | 1 |
6 files changed, 167 insertions, 1 deletions
diff --git a/libc/ChangeLog.eglibc b/libc/ChangeLog.eglibc index 290517800..f20e2837d 100644 --- a/libc/ChangeLog.eglibc +++ b/libc/ChangeLog.eglibc @@ -1,3 +1,10 @@ +2011-12-07 Joseph Myers <joseph@codesourcery.com> + + * debug/tst-backtrace6.c: New test. + * debug/Makefile (LDFLAGS-tst-backtrace6): Define. + (tests-$(OPTION_EGLIBC_BACKTRACE)): Add new tst-backtrace6. + * sysdeps/sh/Makefile (CFLAGS-tst-backtrace6.c): Define. + 2011-12-02 Joseph Myers <joseph@codesourcery.com> * sysdeps/sh/Makefile (CFLAGS-backtrace.c) diff --git a/libc/debug/Makefile b/libc/debug/Makefile index 6938126fc..6778378f7 100644 --- a/libc/debug/Makefile +++ b/libc/debug/Makefile @@ -134,13 +134,14 @@ LDFLAGS-tst-backtrace2 = -rdynamic LDFLAGS-tst-backtrace3 = -rdynamic LDFLAGS-tst-backtrace4 = -rdynamic LDFLAGS-tst-backtrace5 = -rdynamic +LDFLAGS-tst-backtrace6 = -rdynamic tests = tst-longjmp_chk test-strcpy_chk test-stpcpy_chk tst-longjmp_chk2 tests-$(OPTION_EGLIBC_LOCALE_CODE) \ += tst-chk1 tst-chk2 tst-chk3 tst-lfschk1 tst-lfschk2 tst-lfschk3 tests-$(OPTION_EGLIBC_BACKTRACE) \ += backtrace-tst tst-backtrace2 tst-backtrace3 tst-backtrace4 \ - tst-backtrace5 + tst-backtrace5 tst-backtrace6 ifeq (yy,$(OPTION_EGLIBC_LOCALE_CODE)$(OPTION_EGLIBC_CXX_TESTS)) tests += tst-chk4 tst-chk5 tst-chk6 tst-lfschk4 tst-lfschk5 tst-lfschk6 endif diff --git a/libc/debug/tst-backtrace6.c b/libc/debug/tst-backtrace6.c new file mode 100644 index 000000000..b9d8bbdbe --- /dev/null +++ b/libc/debug/tst-backtrace6.c @@ -0,0 +1,152 @@ +/* Copyright (C) 2011 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by CodeSourcery. + + 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, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <execinfo.h> +#include <search.h> +#include <setjmp.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <signal.h> +#include <unistd.h> + +static int do_test (void); +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" + +/* Set to a non-zero value if the test fails. */ +volatile int ret; + +/* Accesses to X are used to prevent optimization. */ +volatile int x; + +/* Called if the test fails. */ +#define FAIL() \ + do { printf ("Failure on line %d\n", __LINE__); ret = 1; } while (0) + +/* The backtrace should include at least handle_signal, a signal + trampoline, noreturn_func, 3 * fn, and do_test. */ +#define NUM_FUNCTIONS 7 + +/* Use this attribute to prevent inlining, so that all expected frames + are present. */ +#define NO_INLINE __attribute__((noinline)) + +jmp_buf b; + +void +handle_signal (int signum) +{ + void *addresses[NUM_FUNCTIONS]; + char **symbols; + int n; + int i; + + /* Get the backtrace addresses. */ + n = backtrace (addresses, sizeof (addresses) / sizeof (addresses[0])); + printf ("Obtained backtrace with %d functions\n", n); + /* Check that there are at least seven functions. */ + if (n < NUM_FUNCTIONS) + { + FAIL (); + longjmp (b, 1); + } + /* Convert them to symbols. */ + symbols = backtrace_symbols (addresses, n); + /* Check that symbols were obtained. */ + if (symbols == NULL) + { + FAIL (); + longjmp (b, 1); + } + for (i = 0; i < n; ++i) + printf ("Function %d: %s\n", i, symbols[i]); + /* Check that the function names obtained are accurate. */ + if (strstr (symbols[0], "handle_signal") == NULL) + { + FAIL (); + longjmp (b, 1); + } + /* Do not check name for signal trampoline. */ + if (strstr (symbols[2], "noreturn_func") == NULL) + { + FAIL (); + longjmp (b, 1); + } + for (i = 3; i < n - 1; i++) + if (strstr (symbols[i], "fn") == NULL) + { + FAIL (); + longjmp (b, 1); + } + /* Symbol names are not available for static functions, so we do not + check do_test. */ + + longjmp (b, 1); +} + +NO_INLINE __attribute__((noreturn)) void +noreturn_func (void) +{ + while (1) + ; +} + +NO_INLINE int +fn (int c) +{ + pid_t parent_pid, child_pid; + struct sigaction act; + + if (c > 0) + { + fn (c - 1); + return x; + } + + memset (&act, 0, sizeof (act)); + act.sa_handler = handle_signal; + sigemptyset (&act.sa_mask); + sigaction (SIGUSR1, &act, NULL); + parent_pid = getpid (); + + child_pid = fork (); + if (child_pid == (pid_t) -1) + abort (); + else if (child_pid == 0) + { + sleep (1); + kill (parent_pid, SIGUSR1); + _exit (0); + } + + /* In the parent. */ + if (setjmp (b)) + return 0; + else + noreturn_func (); +} + +NO_INLINE static int +do_test (void) +{ + fn (2); + return ret; +} diff --git a/libc/sysdeps/sh/Makefile b/libc/sysdeps/sh/Makefile index c2215b4cb..34c636a99 100644 --- a/libc/sysdeps/sh/Makefile +++ b/libc/sysdeps/sh/Makefile @@ -8,4 +8,5 @@ CFLAGS-tst-backtrace2.c += -funwind-tables CFLAGS-tst-backtrace3.c += -funwind-tables CFLAGS-tst-backtrace4.c += -funwind-tables CFLAGS-tst-backtrace5.c += -funwind-tables +CFLAGS-tst-backtrace6.c += -funwind-tables endif diff --git a/ports/ChangeLog.eglibc b/ports/ChangeLog.eglibc index db2a99a86..fd9f161ee 100644 --- a/ports/ChangeLog.eglibc +++ b/ports/ChangeLog.eglibc @@ -1,3 +1,7 @@ +2011-12-07 Joseph Myers <joseph@codesourcery.com> + + * sysdeps/arm/eabi/Makefile (CFLAGS-tst-backtrace6.c): Define. + 2011-12-01 Joseph Myers <joseph@codesourcery.com> * sysdeps/arm/eabi/Makefile (CFLAGS-tst-backtrace3.c) diff --git a/ports/sysdeps/arm/eabi/Makefile b/ports/sysdeps/arm/eabi/Makefile index ef45599dd..c90d16160 100644 --- a/ports/sysdeps/arm/eabi/Makefile +++ b/ports/sysdeps/arm/eabi/Makefile @@ -25,6 +25,7 @@ CFLAGS-tst-backtrace2.c += -funwind-tables CFLAGS-tst-backtrace3.c += -funwind-tables CFLAGS-tst-backtrace4.c += -funwind-tables CFLAGS-tst-backtrace5.c += -funwind-tables +CFLAGS-tst-backtrace6.c += -funwind-tables endif ifeq ($(subdir),elf) |