diff options
Diffstat (limited to 'debug')
| -rw-r--r-- | debug/Makefile | 13 | ||||
| -rw-r--r-- | debug/pcprofile.c | 21 | ||||
| -rw-r--r-- | debug/pcprofiledump.c | 187 | ||||
| -rwxr-xr-x | debug/xtrace.sh | 168 |
4 files changed, 386 insertions, 3 deletions
diff --git a/debug/Makefile b/debug/Makefile index d13be3d684..0f465ffecf 100644 --- a/debug/Makefile +++ b/debug/Makefile @@ -39,12 +39,14 @@ libSegFault-inhibit-o = $(filter-out .os,$(object-suffixes)) libpcprofile-routines = pcprofile libpcprofile-inhibit-o = $(filter-out .os,$(object-suffixes)) +install-bin = pcprofiledump xtrace + include ../Makeconfig distribute += catchsegv.sh ifeq ($(elf),yes) ifeq ($(build-shared),yes) -install-bin = catchsegv +install-bin += catchsegv endif endif generated = catchsegv @@ -57,6 +59,15 @@ $(objpfx)catchsegv: catchsegv.sh $(common-objpfx)soversions.mk \ chmod 555 $@.new mv -f $@.new $@ +$(objpfx)pcprofiledump: $(objpfx)pcprofiledump.o + $(LINK.o) -o $@ $^ + +$(objpfx)xtrace: xtrace.sh + rm -f $@.new + sed -e 's|@BASH@|$(BASH)|' -e 's|@VERSION@|$(version)|' \ + -e 's|@LIBDIR@|$(libdir)|' -e 's|@BINDIR@|$(bindir)|' $^ > $@.new \ + && rm -f $@ && mv $@.new $@ && chmod +x $@ + # 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/pcprofile.c b/debug/pcprofile.c index b5dc4e709c..11447deb7d 100644 --- a/debug/pcprofile.c +++ b/debug/pcprofile.c @@ -18,7 +18,9 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <errno.h> #include <fcntl.h> +#include <stdint.h> #include <stdlib.h> #include <unistd.h> @@ -39,10 +41,25 @@ install (void) if (outfile != NULL && *outfile != '\0') { - fd = open (outfile, O_RDWR); + fd = open (outfile, O_RDWR | O_CREAT, 0666); if (fd != -1) - active = 1; + { + uint32_t word; + + active = 1; + + /* Write a magic word which tells the reader about the byte + order and the size of the following entries. */ + word = 0xdeb00000 | sizeof (void *); + if (TEMP_FAILURE_RETRY (write (fd, &word, 4)) != 4) + { + /* If even this fails we shouldn't try further. */ + close (fd); + fd = -1; + active = 0; + } + } } } diff --git a/debug/pcprofiledump.c b/debug/pcprofiledump.c new file mode 100644 index 0000000000..2d20a88b9f --- /dev/null +++ b/debug/pcprofiledump.c @@ -0,0 +1,187 @@ +/* Dump information generating by PC profiling. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999. + + 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. */ + +/* This is mainly and example. It shows how programs which want to use + the information should read the file. */ +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <argp.h> +#include <byteswap.h> +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <inttypes.h> +#include <libintl.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "../version.h" + + +#ifndef _ +# define _(Str) gettext (Str) +#endif + +#ifndef N_ +# define N_(Str) Str +#endif + +/* Definitions of arguments for argp functions. */ +static const struct argp_option options[] = +{ + { NULL, 0, NULL, 0, NULL } +}; + +/* Short description of program. */ +static const char doc[] = N_("Dump information generating by PC profiling."); + +/* Strings for arguments in help texts. */ +static const char args_doc[] = N_("[FILE]"); + +/* Function to print some extra text in the help message. */ +static char *more_help (int key, const char *text, void *input); + +/* Data structure to communicate with argp functions. */ +static struct argp argp = +{ + options, NULL, args_doc, doc, NULL, more_help +}; + + +int +main (int argc, char *argv[]) +{ + int fd; + int remaining; + int must_swap; + uint32_t word; + + /* Parse and process arguments. */ + argp_parse (&argp, argc, argv, 0, &remaining, NULL); + + if (remaining == argc) + fd = STDIN_FILENO; + else if (remaining + 1 != argc) + { + argp_help (&argp, stdout, ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR, + program_invocation_short_name); + exit (1); + } + else + { + /* Open the given file. */ + fd = open (argv[remaining], O_RDONLY); + + if (fd == -1) + error (EXIT_FAILURE, errno, _("cannot open input file")); + } + + /* Read the first 4-byte word. It contains the information about + the word size and the endianess. */ + if (TEMP_FAILURE_RETRY (read (fd, &word, 4)) != 4) + error (EXIT_FAILURE, errno, _("cannot read header")); + + /* Check whether we have to swap the byte order. */ + must_swap = (word & 0xfffffff0) == bswap_32 (0xdeb00000); + if (must_swap) + word = bswap_32 (word); + + /* We have two loops, one for 32 bit pointers, one for 64 bit pointers. */ + if (word == 0xdeb00004) + { + union + { + uint32_t ptrs[2]; + char bytes[8]; + } pair; + + while (1) + { + size_t len = sizeof (pair); + size_t n; + + while (len > 0 + && (n = TEMP_FAILURE_RETRY (read (fd, &pair.bytes[8 - len], + len))) != 0) + len -= n; + + if (len != 0) + /* Nothing to read. */ + break; + + printf ("this = %#010" PRIx32 ", caller = %#010" PRIx32 "\n", + must_swap ? bswap_32 (pair.ptrs[0]) : pair.ptrs[0], + must_swap ? bswap_32 (pair.ptrs[1]) : pair.ptrs[1]); + } + } + else if (word == 0xdeb00008) + { + union + { + uint64_t ptrs[2]; + char bytes[16]; + } pair; + + while (1) + { + size_t len = sizeof (pair); + size_t n; + + while (len > 0 + && (n = TEMP_FAILURE_RETRY (read (fd, &pair.bytes[8 - len], + len))) != 0) + len -= n; + + if (len != 0) + /* Nothing to read. */ + break; + + printf ("this = %#018" PRIx64 ", caller = %#018" PRIx64 "\n", + must_swap ? bswap_64 (pair.ptrs[0]) : pair.ptrs[0], + must_swap ? bswap_64 (pair.ptrs[1]) : pair.ptrs[1]); + } + } + else + /* This should not happen. */ + error (EXIT_FAILURE, 0, _("invalid pointer size")); + + /* Clean up. */ + close (fd); + + return 0; +} + +static char * +more_help (int key, const char *text, void *input) +{ + switch (key) + { + case ARGP_KEY_HELP_EXTRA: + /* We print some extra information. */ + return strdup (gettext ("\ +Report bugs using the `glibcbug' script to <bugs@gnu.org>.\n")); + default: + break; + } + return (char *) text; +} diff --git a/debug/xtrace.sh b/debug/xtrace.sh new file mode 100755 index 0000000000..c688391ff1 --- /dev/null +++ b/debug/xtrace.sh @@ -0,0 +1,168 @@ +#! @BASH@ +# Copyright (C) 1999 Free Software Foundation, Inc. +# This file is part of the GNU C Library. +# Contributed by Ulrich Drepper <drepper@gnu.org>, 1999. + +# 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. + +pcprofileso=@LIBDIR@/libpcprofile.so +pcprofiledump=@BINDIR@/pcprofiledump + +# Print usage message. +do_usage() { + echo >&2 $"Try \`xtrace --help' for more information." + exit 1 +} + +# Message for missing argument. +do_missing_arg() { + echo >&2 $"xtrace: option \`$1' requires an argument" + do_usage +} + +# Print help message +do_help() { + echo $"Usage: xtrace [OPTION]... PROGRAM [PROGRAMOPTION]... +Trace execution of program by printing currently executed function. + + --data=FILE Don't run the program, just print the data from FILE. + + -?,--help Print this help and exit + --usage Give a short usage message + -V,--version Print version information and exit + +Mandatory arguments to long options are also mandatory for any corresponding +short options. + +Report bugs using the \`glibcbug' script to <bugs@gnu.org>." + exit 0 +} + +do_version() { + echo 'xtrace (GNU libc) @VERSION@' + echo $"Copyright (C) 1999 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 +} + +# Print out function name, file, and line number is a nice formatted way. +format_line() { + fct=$1 + file=${2%%:*} + line=${2##*:} + width=$(expr $COLUMNS - 30) + filelen=$(expr length $file) + if test "$filelen" -gt "$width"; then + rwidth=$(expr $width - 3) + file="...$(expr substr $file $(expr 1 + $filelen - $rwidth) $rwidth)" + fi + printf '%-20s %-*s %6s\n' $fct $width $file $line +} + + +# If the variable COLUMNS is not set do this now. +COLUMNS=${COLUMNS:-80} + +# If `TERM' is not set, set it to `xterm'. +TERM=${TERM:-xterm} + +# Process arguments. But stop as soon as the program name is found. +while test $# -gt 0; do + case "$1" in + --d | --da | --dat | --data) + if test $# -eq 1; then + do_missing_arg $1 + fi + shift + data="$1" + ;; + --d=* | --da=* | --dat=* | --data=*) + data=${1##*=} + ;; + --) + # Stop processing arguments. + shift + break + ;; + --*) + echo >&2 $"memprof: unrecognized option \`$1'" + do_usage + ;; + *) + # Unknown option. This means the rest is the program name and parameters. + break + ;; + esac + shift +done + +# See whether any arguments are left. +if test $# -eq 0; then + echo >&2 $"No program name given" + do_usage +fi + +# Determine the program name and check whether it exists. +program=$1 +shift +if test ! -f "$program"; then + echo >2& $"\executable \`$program' not found" + do_usage +fi +if test ! -x "$program"; then + echo >&2 $"\`$program' is no executable" + do_usage +fi + +# We have two modes. If a data file is given simply print the included data. +printf "%-20s %-*s %6s\n" Function $(expr $COLUMNS - 30) File Line +for i in $(seq 1 $COLUMNS); do echo -n -; done; echo +if test -n "$data"; then + eval $pcprofiledump $data | + sed 's/this = \([^,]*\).*/\1/' | + addr2line -fC -e $program | + while read fct; do + read file + if test "$fct" != '??' -a "$file" != '??:0'; then + format_line $fct $file + fi + done +else + fifo=$(mktemp -u ${TMPDIR:-/tmp}/xprof.XXXXXX) + mkfifo -m 0600 $fifo || exit 1 + # Now start the program and let it write to the FIFO. + eval $TERM -T "'xtrace - $program $*'" -e /bin/sh -c "'LD_PRELOAD=$pcprofileso PCPROFILE_OUTPUT=$fifo $program $*; read $fifo'" & + termpid=$! + eval $pcprofiledump $fifo | + sed 's/this = \([^,]*\).*/\1/' | + addr2line -fC -e $program | + while read fct; do + read file + if test "$fct" != '??' -a "$file" != '??:0'; then + format_line $fct $file + fi + done + read -p "Press return to end the program." + echo > $fifo + rm $fifo +fi + +exit 0 +# Local Variables: +# mode:ksh +# End: |