From 2de7874e55b344d5270abc8832950cf09c6d7dd7 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Mon, 8 Jun 1998 19:06:31 +0000 Subject: Update. 1998-06-08 18:57 Ulrich Drepper * Makeconfig (subdirs): Add debug. * configure.in: Use sysdeps/generic/elf subdir if ELF platform. * libc.map: Add __backtrace, __backtrace_symbols, backtrace and backtrace_symbols. * sysdeps/generic/backtrace.c: New file. * sysdeps/generic/backtracesyms.c: New file. * sysdeps/generic/elf/backtracesyms.c: New file. * sysdeps/i386/backtrace.c: New file. * debug/Makefile: New file. * debug/backtrace-tst.c: New file. * debug/execinfo.h: New file. --- debug/Makefile | 32 ++++++++++++++++++++++++++++++++ debug/backtrace-tst.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ debug/execinfo.h | 39 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 115 insertions(+) create mode 100644 debug/Makefile create mode 100644 debug/backtrace-tst.c create mode 100644 debug/execinfo.h (limited to 'debug') diff --git a/debug/Makefile b/debug/Makefile new file mode 100644 index 0000000000..5286cc15fd --- /dev/null +++ b/debug/Makefile @@ -0,0 +1,32 @@ +# Copyright (C) 1998 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 Library General Public License as +# published by the Free Software Foundation; either version 2 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 +# Library General Public License for more details. + +# You should have received a copy of the GNU Library General Public +# License along with the GNU C Library; see the file COPYING.LIB. If not, +# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. + +# +# Sub-makefile for debug portion of the library. +# +subdir := debug + +headers := execinfo.h + +routines := backtrace backtracesyms + +CFLAGS-backtrace.c = -fno-omit-frame-pointer + +tests = backtrace-tst + +include ../Rules diff --git a/debug/backtrace-tst.c b/debug/backtrace-tst.c new file mode 100644 index 0000000000..d899fb009f --- /dev/null +++ b/debug/backtrace-tst.c @@ -0,0 +1,44 @@ +#include +#include +#include +#include + + +static int +compare (const void *p1, const void *p2) +{ + void *ba[20]; + int n = backtrace (ba, sizeof (ba) / sizeof (ba[0])); + if (n != 0) + { + char **names = backtrace_symbols (ba, n); + if (names != NULL) + { + int i; + printf ("called from %s\n", names[0]); + for (i = 1; i < n; ++i) + printf (" %s\n", names[i]); + free (names); + } + } + + return *(uint32_t *) p1 - *(uint32_t *) p2; +} + + +int +main (int argc, char *argv[]) +{ + uint32_t arr[20]; + size_t cnt; + + for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt) + arr[cnt] = random (); + + qsort (arr, sizeof (arr) / sizeof (arr[0]), sizeof (arr[0]), compare); + + for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt) + printf ("%" PRIx32 "\n", arr[cnt]); + + return 0; +} diff --git a/debug/execinfo.h b/debug/execinfo.h new file mode 100644 index 0000000000..07bed92446 --- /dev/null +++ b/debug/execinfo.h @@ -0,0 +1,39 @@ +/* Copyright (C) 1998 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _EXECINFO_H +#define _EXECINFO_H 1 + +#include + +__BEGIN_DECLS + +/* Store up to SIZE return address of the current program state in + ARRAY and return the exact number of values stored. */ +extern int __backtrace __P ((void **__array, int __size)); +extern int backtrace __P ((void **__array, int __size)); + + +/* Return names of functions from the backtrace list in ARRAY in a newly + malloc()ed memory block. */ +extern char **__backtrace_symbols __P ((__const void **__array, int __size)); +extern char **backtrace_symbols __P ((__const void **__array, int __size)); + +__END_DECLS + +#endif /* execinfo.h */ -- cgit 1.4.1