2004-11-23  Andrew Cagney  <cagney@redhat.com>

	* Makefile.in (uninstall-gstack, install-gstack): New rules, add
	to install and uninstall.
	* gstack.sh, gstack.1: New files.

diff -uN -r ../orig/gdb/Makefile.in ./gdb/Makefile.in
--- ../orig/gdb/Makefile.in	2004-11-23 13:31:03.000000000 -0500
+++ ./gdb/Makefile.in	2004-11-23 15:06:34.623389592 -0500
@@ -970,7 +970,7 @@
 # time it takes for make to check that all is up to date.
 # install-only is intended to address that need.
 install: all install-only
-install-only: $(CONFIG_INSTALL)
+install-only: install-gstack $(CONFIG_INSTALL)
 	transformed_name=`t='$(program_transform_name)'; \
 			  echo gdb | sed -e "$$t"` ; \
 		if test "x$$transformed_name" = x; then \
@@ -1002,9 +1002,26 @@
 			$(DESTDIR)$(man1dir) ; \
 		$(INSTALL_DATA) $(srcdir)/gdb.1 \
 			$(DESTDIR)$(man1dir)/$$transformed_name.1
+GSTACK=gstack
+.PHONY: install-gstack
+install-gstack:
+	transformed_name=`t='$(program_transform_name)'; \
+			  echo $(GSTACK) | sed -e "$$t"` ; \
+		if test "x$$transformed_name" = x; then \
+		  transformed_name=$(GSTACK) ; \
+		else \
+		  true ; \
+		fi ; \
+		$(SHELL) $(srcdir)/../mkinstalldirs $(DESTDIR)$(bindir) ; \
+		$(INSTALL_PROGRAM) $(srcdir)/$(GSTACK).sh \
+			$(DESTDIR)$(bindir)/$$transformed_name$(EXEEXT) ; \
+		: $(SHELL) $(srcdir)/../mkinstalldirs \
+			$(DESTDIR)$(man1dir) ; \
+		: $(INSTALL_DATA) $(srcdir)/gstack.1 \
+			$(DESTDIR)$(man1dir)/$$transformed_name.1
 
 
-uninstall: force $(CONFIG_UNINSTALL)
+uninstall: force uninstall-gstack $(CONFIG_UNINSTALL)
 	transformed_name=`t='$(program_transform_name)'; \
 			  echo gdb | sed -e $$t` ; \
 		if test "x$$transformed_name" = x; then \
@@ -1026,6 +1043,17 @@
 		fi ; \
 		rm -f $(DESTDIR)$(bindir)/$$transformed_name$(EXEEXT) \
 		      $(DESTDIR)$(man1dir)/$$transformed_name.1
+.PHONY: uninstall-gstack
+uninstall-gstack:
+	transformed_name=`t='$(program_transform_name)'; \
+			  echo $(GSTACK) | sed -e $$t` ; \
+		if test "x$$transformed_name" = x; then \
+		  transformed_name=$(GSTACK) ; \
+		else \
+		  true ; \
+		fi ; \
+		rm -f $(DESTDIR)$(bindir)/$$transformed_name$(EXEEXT) \
+		      $(DESTDIR)$(man1dir)/$$transformed_name.1
 
 # We do this by grepping through sources.  If that turns out to be too slow,
 # maybe we could just require every .o file to have an initialization routine
--- /dev/null	2005-04-09 23:51:05.027867440 -0400
+++ ./gdb/gstack.sh	2005-04-08 18:00:49.000000000 -0400
@@ -0,0 +1,45 @@
+#!/bin/sh
+
+if test $# -ne 1; then
+    echo "Usage: `basename $0 .sh` <process-id>" 1>&2
+    exit 1
+fi
+
+if test ! -r /proc/$1; then
+    echo "Process $1 not found." 1>&2
+    exit 1
+fi
+
+# GDB doesn't allow "thread apply all bt" when the process isn't
+# threaded; need to peek at the process to determine if that or the
+# simpler "bt" should be used.
+
+backtrace="bt"
+if test -d /proc/$1/task ; then
+    # Newer kernel; has a task/ directory.
+    if test `ls /proc/$1/task | wc -l` -gt 1 2>/dev/null ; then
+	backtrace="thread apply all bt"
+    fi
+elif test -f /proc/$1/maps ; then
+    # Older kernel; go by it loading libpthread.
+    if grep -e libpthread /proc/$1/maps > /dev/null 2>&1 ; then
+	backtrace="thread apply all bt"
+    fi
+fi
+
+GDB=${GDB:-gdb}
+
+if $GDB -nx --quiet --batch --readnever > /dev/null 2>&1; then
+    readnever=--readnever
+else
+    readnever=
+fi
+
+# Run GDB, strip out unwanted noise.
+$GDB --quiet $readnever -nx /proc/$1/exe $1 <<EOF 2>&1 | 
+$backtrace
+EOF
+sed -n \
+    -e 's/^(gdb) //' \
+    -e '/^#/p' \
+    -e '/^Thread/p'