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-rw-r--r--debug/Makefile13
-rw-r--r--debug/pcprofile.c21
-rw-r--r--debug/pcprofiledump.c187
-rwxr-xr-xdebug/xtrace.sh168
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:
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