diff options
Diffstat (limited to 'debug')
| -rw-r--r-- | debug/Makefile | 13 | ||||
| -rwxr-xr-x | debug/catchsegv.sh | 84 |
2 files changed, 96 insertions, 1 deletions
diff --git a/debug/Makefile b/debug/Makefile index 3ee7a9f..0826b99 100644 --- a/debug/Makefile +++ b/debug/Makefile @@ -22,6 +22,7 @@ subdir := debug headers := execinfo.h +distribute = sigcontextinfo.h routines := backtrace backtracesyms backtracesymsfd @@ -29,14 +30,24 @@ CFLAGS-backtrace.c = -fno-omit-frame-pointer tests = backtrace-tst -extra-libs = libSegFault +extra-libs = libSegFault extra-libs-others = $(extra-libs) libSegFault-routines = segfault libSegFault-inhibit-o = $(filter-out .os,$(object-suffixes)) +distribute += catchsegv.sh +install-bin = catchsegv +generated = catchsegv + include ../Rules +$(objpfx)catchsegv: catchsegv.sh $(common-objpfx)soversions.mk \ + $(common-objpfx)config.make + sed 's/@VERSION@/$(version)/;s/@SLIB@/$(slibdir)/' $< > $@.new + chmod 555 $@.new + mv -f $@.new $@ + # Depend on libc.so so a DT_NEEDED is generated in the shared objects. # This ensures they will load libc.so for needed symbols if loaded by # a statically-linked program that hasn't already loaded it. diff --git a/debug/catchsegv.sh b/debug/catchsegv.sh new file mode 100755 index 0000000..765242e --- /dev/null +++ b/debug/catchsegv.sh @@ -0,0 +1,84 @@ +#! /bin/sh + +# Copyright (C) 1998 Free Software Foundation, Inc. +# This file is part of the GNU C Library. +# Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + +# 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. + +prog="$1" +shift +args="$*" + +if test $# -eq 0; then + case "$args" in + --h | --he | --hel | --help) + echo 'Usage: catchsegv PROGRAM ARGS...' + echo ' --help print this help, then exit' + echo ' --version print version number, then exit' + echo "Report bugs using the \`glibcbug' script to <bugs@gnu.org>." + exit 0 + ;; + --v | --ve | --ver | --vers | --versi | --versio | --version) + echo 'catchsegv (GNU libc) @VERSION@' + echo 'Copyright (C) 1998 Free Software Foundation, Inc. +This is free software; see the source for copying conditions. There is NO +warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +Written by Ulrich Drepper.' + exit 0 + ;; + *) + ;; + esac +fi + +LD_PRELOAD="${LD_PRELOAD:+${LD_PRELOAD}:}@SLIB@/libSegFault.so" +export LD_PRELOAD +SEGFAULT_USE_ALTSTACK=1 +export SEGFAULT_USE_ALTSTACK +SEGFAULT_OUTPUT_NAME="$prog.segv.$$" +export SEGFAULT_OUTPUT_NAME + +$prog $args +exval=$? + +unset LD_PRELOAD +# Check for an segmentation fault. +if test $exval -eq 139; then + # We caught a segmentation error. The output is in the file with the + # name we have in SEGFAULT_OUTPUT_NAME. In the output the names of + # functions in shared objects are available, but names in the static + # part of the program are not. We use addr2line to get this information. + (read line; echo "$line" + read line; echo "$line" + while read line; do + case "$line" in + [*) addr="`echo $line | sed 's/^[\(.*\)]$/\1/'`" + complete="`addr2line -f -e $prog $addr 2>/dev/null|`" + if $? -eq 0; then + echo "`echo $complete|sed 'N;s/\(.*\)\n\(.*\)/\2(\1)/;'`$line" + else + echo "$line" + fi + ;; + *) echo "$line" + ;; + esac + done) < $SEGFAULT_OUTPUT_NAME + rm $SEGFAULT_OUTPUT_NAME +fi + +exit $exval |