gdb/testsuite/gdb.base/selftest.exp - binutils-gdb - Git at Google

 #   Copyright 1988, 1990, 1991, 1992, 1994, 1997, 1999, 2000
 #   Free Software Foundation, Inc.

 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.
 #
 # This program 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 General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 # Please email any bugs, comments, and/or additions to this file to:
 # bug-gdb@prep.ai.mit.edu

 # This file was written by Rob Savoye. (rob@cygnus.com)

 if $tracelevel then {
     strace $tracelevel
 }

 set prms_id 0
 set bug_id 0

 # are we on a target board
 if [is_remote target] {
     return
 }

 if [istarget "m68k*-*-hpux*"] then {
     # The top-level makefile passes CFLAGS= (no -g) for hp300.  This probably
     # should be fixed (it is only needed for gcc bootstrapping, not gdb),
     # but until then.....
     setup_xfail "*-*-*"
     fail "cannot test self if compiled without debug info"
     return -1
 }

 # Not all of the lines of code near the start of main are executed for
 # every machine.  Also, optimization may reorder some of the lines.
 # So all we do is try to step or next over everything until we get
 # to a line that we know is always executed.

 proc do_steps_and_nexts {} {
     global gdb_prompt
     global srcdir

     gdb_reinitialize_dir $srcdir/..

     for {set count 0} {$count < 26} {incr count} {
 	send_gdb "list\n"
 	gdb_expect {
 	    -re ".*context = data.*$gdb_prompt $" {
 		set description "step over context initialization"
 		set command "step"
 	    }
 	    -re ".*argc = context->argc.*$gdb_prompt $" {
 		set description "step over argc initialization"
 		set command "step"
 	    }
 	    -re ".*argv = context->argv.*$gdb_prompt $" {
 		set description "step over argv initialization"
 		set command "step"
 	    }
 	    -re ".*quiet = 0.*$gdb_prompt $" {
 		set description "step over quiet initialization"
 		set command "step"
 	    }
 	    -re ".*batch = 0.*$gdb_prompt $" {
 		set description "step over batch initialization"
 		set command "step"
 	    }
 	    -re ".*symarg = NULL.*$gdb_prompt $" {
 		set description "step over symarg initialization"
 		set command "step"
 	    }
 	    -re ".*execarg = NULL.*$gdb_prompt $" {
 		set description "step over execarg initialization"
 		set command "step"
 	    }
 	    -re ".*corearg = NULL.*$gdb_prompt $" {
 		set description "step over corearg initialization"
 		set command "step"
 	    }
 	    -re ".*cdarg = NULL.*$gdb_prompt $" {
 		set description "step over cdarg initialization"
 		set command "step"
 	    }
 	    -re ".*ttyarg = NULL.*$gdb_prompt $" {
 		set description "step over ttyarg initialization"
 		set command "step"
 	    }
 	    -re ".*time_at_startup = get_run_time.*$gdb_prompt $" {
 		set description "next over get_run_time and everything it calls"
 		set command "next"
 	    }
 	    -re ".*START_PROGRESS.*$gdb_prompt $" {
 		set description "next over START_PROGRESS and everything it calls"
 		set command "next"
 	    }
 	    -re ".*mac_init.*$gdb_prompt $" {
 		set description "next over mac_init and everything it calls"
 		set command "next"
 	    }
 	    -re ".*init_malloc.*$gdb_prompt $" {
 		set description "next over init_malloc and everything it calls"
 		set command "next"
 	    }
 	    -re ".*count . 0x3.*$gdb_prompt $" {
 		set description "next over conditional stack alignment code 1"
 		set command "next"
 	    }
 	    -re ".*if .i != 0.*$gdb_prompt $" {
 		set description "next over conditional stack alignment code 2"
 		set command "next"
 	    }
 	    -re ".*alloca .i - 4.*$gdb_prompt $" {
 		set description "next over conditional stack alignment alloca"
 		set command "next"
 	    }
 	    -re ".*cmdsize = 1.*$gdb_prompt $" {
 		set description "step over cmdsize initialization"
 		set command "next"
 	    }
 	    -re ".*cmdarg = .* xmalloc.*$gdb_prompt $" {
 		set description "next over cmdarg initialization via xmalloc"
 		set command "next"
 	    }
 	    -re ".*ncmd = 0.*$gdb_prompt $" {
 		set description "next over ncmd initialization"
 		set command "next"
 	    }
 	    -re ".*dirsize = 1.*$gdb_prompt $" {
 		set description "next over dirsize initialization"
 		set command "next"
 	    }
 	    -re ".*dirarg = .* xmalloc.*$gdb_prompt $" {
 		return
 	    }
 	    -re ".*setlocale .LC_MESSAGES,.*$gdb_prompt $" {
 		set description "next over setlocale LC_MESSAGES"
 		set command "next"
 	    }
 	    -re ".*setlocale .LC_CTYPE,.*$gdb_prompt $" {
 		set description "next over setlocale LC_CTYPE"
 		set command "next"
 	    }
 	    -re ".*bindtextdomain .PACKAGE, LOCALEDIR.;.*$gdb_prompt $" {
 		set description "next over bindtextdomain"
 		set command "next"
 	    }
 	    -re ".*textdomain .PACKAGE.;.*$gdb_prompt $" {
 		set description "next over textdomain PACKAGE"
 		set command "next"
 	    }
 	    -re "\[ \t\]+\{\r\n$gdb_prompt $" {
 		setup_xfail "mips-*-irix5*"
 		fail "$description ended up at odd location"
 	    }
 	    -re ".*main.c.*No such file or directory.*$gdb_prompt $" {
 		setup_xfail "rs6000-*-aix3*"
 		fail "must be able to list source lines"
 		return
 	    }
 	    -re ".*$gdb_prompt $" {
 		fail "unknown source line after $description"
 		return
 	    }
 	    default {
 		fail "unknown source line near main"
 		return
 	    }
 	}
 	send_gdb "$command\n"
 	gdb_expect {
 	    -re ".*No such file or directory.\r\n$gdb_prompt $" {
 		fail "$description (no source available)"
 	    }
 	    -re ".*A file or directory .* does not exist..\r\n$gdb_prompt $" {
 		fail "$description (no source available)"
 	    }
 	    -re ".*$gdb_prompt $" {
 		pass "$description"
 	    }
 	    timeout {
 		fail "$description (timeout)"
 	    }
 	}
     }
 }

 proc test_with_self { executable } {
     global gdb_prompt
     global tool
     global det_file
     global decimal
     global timeout

     # load yourself into the debugger
     # This can take a relatively long time, particularly for testing where
     # the executable is being accessed over a network, or where gdb does not
     # support partial symbols for a particular target and has to load the
     # entire symbol table.  Set the timeout to 10 minutes, which should be
     # adequate for most environments (it *has* timed out with 5 min on a
     # SPARCstation SLC under moderate load, so this isn't unreasonable).
     # After gdb is started, set the timeout to 30 seconds for the duration
     # of this test, and then back to the original value.

     set oldtimeout $timeout
     set timeout 600
     verbose "Timeout is now $timeout seconds" 2
     if {[gdb_load $executable] <0} then {
 	set timeout $oldtimeout
 	verbose "Timeout is now $timeout seconds" 2
 	return -1
     }
     set timeout $oldtimeout
     verbose "Timeout is now $timeout seconds" 2

     # disassemble yourself
     gdb_test "x/10i main" \
 	    "x/10i.*main.*main.$decimal.*main.$decimal.*" \
 	    "Disassemble main"

     # Set a breakpoint at main
     gdb_test "break captured_main" \
 	    "Breakpoint.*at.* file.*, line.*" \
 	    "breakpoint in captured_main"

     # We'll need this when we send a ^C to GDB.  Need to do it before we
     # run the program and gdb starts saving and restoring tty states.
     # On Ultrix, we don't need it and it is really slow (because shell_escape
     # doesn't use vfork).
     if ![istarget "*-*-ultrix*"] then {
 	gdb_test "shell stty intr '^C'" "" \
 	    "set interrupt character in test_with_self"
     }

     # FIXME: If we put this after the run to main, the first list
     # command doesn't print the same line as the current line where
     # gdb is stopped.
     gdb_test "set listsize 1" "" "set listsize to 1"

     # run yourself
     # It may take a very long time for the inferior gdb to start (lynx),
     # so we bump it back up for the duration of this command.
     set timeout 600

     set description "run until breakpoint at captured_main"
     send_gdb "run -nw\n"
     gdb_expect {
 	-re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.* at .*main.c:.*$gdb_prompt $" {
 	    pass "$description"
 	}
 	-re "Starting program.*Breakpoint \[0-9\]+,.*captured_main .data.*$gdb_prompt $" {
 	    xfail "$description (line numbers scrambled?)"
 	}
 	-re "vfork: No more processes.*$gdb_prompt $" {
 	    fail "$description (out of virtual memory)"
 	    set timeout $oldtimeout
 	    verbose "Timeout is now $timeout seconds" 2
 	    return -1
 	}
 	-re ".*$gdb_prompt $" {
 	    fail "$description"
 	    set timeout $oldtimeout
 	    verbose "Timeout is now $timeout seconds" 2
 	    return -1
 	}
 	timeout {
 	    fail "$description (timeout)"
 	}
     }

     set timeout $oldtimeout
     verbose "Timeout is now $timeout seconds" 2

     # do we have a version number ?
     send_gdb "print version\n"
     gdb_expect {
 	-re ".\[0-9\]+ = .\[0-9.\]+.*$gdb_prompt $" {
 	    pass "printed version as string"
 	}
 	-re ".\[0-9\]+ = +0x.*\[0-9.\]+.*$gdb_prompt $" {
 	    pass "printed version as pointer"
 	}
 	-re ".\[0-9\]+ = +.+ +0x.*\[0-9.\]+.*$gdb_prompt $" {
 	    pass "printed version with cast"
 	}
 	-re ".*$gdb_prompt $"	{ fail "printed version" }
 	timeout		{ fail "(timeout) printed version" }
     }

     do_steps_and_nexts

     gdb_test "print \"foo\"" ".\[0-9\]+ = \"foo\"" "print a string"

     # do_steps_and_nexts left us ready to execute an xmalloc call,
     # so give that a try.
     # If we don't actually enter the xmalloc call when we give a
     # step command that seems like a genuine bug.  It seems to happen
     # on most RISC processors.
     setup_xfail "alpha-*-*" "mips-*-*"
     set description "step into xmalloc call"
     send_gdb "step\n"
     gdb_expect {
 	-re "xmalloc.*size=.*at.*utils.c.*$gdb_prompt $" {
 	    pass "$description"
 	}
 	-re ".*No such file or directory.\r\n$gdb_prompt $" {
 	    pass "$description (no source available)"
 	}
 	-re "A file or directory .* does not exist..\r\n$gdb_prompt $" {
 	    pass "$description (no source available)"
 	}
 	-re ".*$gdb_prompt $" {
 	    fail "$description"
 	}
 	timeout {
 	    fail "$description (timeout)"
 	}
     }

     # start the "xgdb" process
     send_gdb "continue\n"
     gdb_expect {
 	-re "GNU gdb \[0-9\.\]*.*
 Copyright \[0-9\]* Free Software Foundation, Inc.*
 GDB is free software, covered by the GNU General Public License, and you are.*
 welcome to change it and/or distribute copies of it under certain conditions.*
 Type \"show copying\" to see the conditions.*
 There is absolutely no warranty for GDB.  Type \"show warranty\" for details.*
 This GDB was configured as .*$gdb_prompt $"\
 	    { pass "xgdb is at prompt" }
 	-re "GDB is free software and you are welcome to distribute copies of it.*
  under certain conditions; type \"show copying\" to see the conditions..*
 There is absolutely no warranty for GDB; type \"show warranty\" for details..*
 GDB.*Copyright \[0-9\]+ Free Software Foundation, Inc..*$gdb_prompt $"\
 	    { pass "xgdb is at prompt (obsolescent gdb)" }
 	-re ".*$gdb_prompt $"       { fail "xgdb is at prompt" }
 	timeout	            { fail "(timeout) xgdb is at prompt" }
     }

     # set xgdb prompt so we can tell which is which
     send_gdb "set prompt (xgdb) \n"
     gdb_expect {
 	-re "\[(\]xgdb\[)\].*\[(\]xgdb\[)\] $"	{ pass "Set xgdb prompt" }
 	-re ".*$gdb_prompt $"		{ fail "Set xgdb prompt" }
 	default				{ fail "(timeout) Set xgdb prompt" }
     }

     # kill the xgdb process
     set description "send ^C to child process"
     send_gdb "\003"
     gdb_expect {
 	-re "Program received signal SIGINT.*$gdb_prompt $" {
 	    pass "$description"
 	}
 	-re ".*$gdb_prompt $" {
 	    fail "$description"
 	}
 	timeout {
 	    fail "$description (timeout)"
 	}
     }

     set description "send SIGINT signal to child process"
     send_gdb "signal SIGINT\n"
     gdb_expect {
 	-re "Continuing with signal SIGINT.*$gdb_prompt $" {
 	    pass "$description"
 	}
 	-re ".*$gdb_prompt $" {
 	    fail "$description"
 	}
 	timeout {
 	    fail "$description (timeout)"
 	}
     }

     # get a stack trace
     #
     # This fails on some linux systems for unknown reasons.  On the
     # systems where it fails, sometimes it works fine when run manually.
     # The testsuite failures may not be limited to just aout systems.
     setup_xfail "i*86-pc-linuxaout-gnu"
     set description "backtrace through signal handler"
     send_gdb "backtrace\n"
     gdb_expect {
 	-re "#0.*read.*in main \\(.*\\) at .*main\\.c.*$gdb_prompt $" {
 	    pass "$description"
 	}
 	-re ".*$gdb_prompt $" {
 	    # On the alpha, we hit the infamous problem about gdb
 	    # being unable to get the frame pointer (mentioned in
 	    # gdb/README).  As it is intermittent, there is no way to
 	    # XFAIL it which will give us an XPASS if the problem goes
 	    # away.
 	    setup_xfail "alpha*-*-osf*"
 	    fail "$description"
 	}
 	timeout {
 	    fail "$description (timeout)"
 	}
     }


     # Set the timeout back to the value it had when we were called.
     set timeout $oldtimeout
     verbose "Timeout is now $timeout seconds" 2

     # Restart gdb in case next test expects it to be started already.
     return 0
 }

 # Find a pathname to a file that we would execute if the shell was asked
 # to run $arg using the current PATH.

 proc find_gdb { arg } {

     # If the arg directly specifies an existing executable file, then
     # simply use it.

     if [file executable $arg] then {
 	return $arg
     }

     set result [which $arg]
     if [string match "/" [ string range $result 0 0 ]] then {
 	return $result
     }

     # If everything fails, just return the unqualified pathname as default
     # and hope for best.

     return $arg
 }

 # Run the test with self.
 # Copy the file executable file in case this OS doesn't like to edit its own
 # text space.

 set GDB_FULLPATH [find_gdb $GDB]

 # Remove any old copy lying around.
 remote_file host delete x$tool

 gdb_start
 set file [remote_download host $GDB_FULLPATH x$tool]
 set result [test_with_self $file];
 gdb_exit;
 catch "remote_file host delete $file";

 if {$result <0} then {
     warning "Couldn't test self"
     return -1
 }
	# Copyright 1988, 1990, 1991, 1992, 1994, 1997, 1999, 2000
	# Free Software Foundation, Inc.

	# This program is free software; you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation; either version 2 of the License, or
	# (at your option) any later version.
	#
	# This program 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 General Public License for more details.
	#
	# You should have received a copy of the GNU General Public License
	# along with this program; if not, write to the Free Software
	# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

	# Please email any bugs, comments, and/or additions to this file to:
	# bug-gdb@prep.ai.mit.edu

	# This file was written by Rob Savoye. (rob@cygnus.com)

	if $tracelevel then {
	strace $tracelevel
	}

	set prms_id 0
	set bug_id 0

	# are we on a target board
	if [is_remote target] {
	return
	}

	if [istarget "m68k--hpux*"] then {
	# The top-level makefile passes CFLAGS= (no -g) for hp300. This probably
	# should be fixed (it is only needed for gcc bootstrapping, not gdb),
	# but until then.....
	setup_xfail "--*"
	fail "cannot test self if compiled without debug info"
	return -1
	}

	# Not all of the lines of code near the start of main are executed for
	# every machine. Also, optimization may reorder some of the lines.
	# So all we do is try to step or next over everything until we get
	# to a line that we know is always executed.

	proc do_steps_and_nexts {} {
	global gdb_prompt
	global srcdir

	gdb_reinitialize_dir $srcdir/..

	for {set count 0} {$count < 26} {incr count} {
	send_gdb "list\n"
	gdb_expect {
	-re ".context = data.$gdb_prompt $" {
	set description "step over context initialization"
	set command "step"
	}
	-re ".argc = context->argc.$gdb_prompt $" {
	set description "step over argc initialization"
	set command "step"
	}
	-re ".argv = context->argv.$gdb_prompt $" {
	set description "step over argv initialization"
	set command "step"
	}
	-re ".quiet = 0.$gdb_prompt $" {
	set description "step over quiet initialization"
	set command "step"
	}
	-re ".batch = 0.$gdb_prompt $" {
	set description "step over batch initialization"
	set command "step"
	}
	-re ".symarg = NULL.$gdb_prompt $" {
	set description "step over symarg initialization"
	set command "step"
	}
	-re ".execarg = NULL.$gdb_prompt $" {
	set description "step over execarg initialization"
	set command "step"
	}
	-re ".corearg = NULL.$gdb_prompt $" {
	set description "step over corearg initialization"
	set command "step"
	}
	-re ".cdarg = NULL.$gdb_prompt $" {
	set description "step over cdarg initialization"
	set command "step"
	}
	-re ".ttyarg = NULL.$gdb_prompt $" {
	set description "step over ttyarg initialization"
	set command "step"
	}
	-re ".time_at_startup = get_run_time.$gdb_prompt $" {
	set description "next over get_run_time and everything it calls"
	set command "next"
	}
	-re ".START_PROGRESS.$gdb_prompt $" {
	set description "next over START_PROGRESS and everything it calls"
	set command "next"
	}
	-re ".mac_init.$gdb_prompt $" {
	set description "next over mac_init and everything it calls"
	set command "next"
	}
	-re ".init_malloc.$gdb_prompt $" {
	set description "next over init_malloc and everything it calls"
	set command "next"
	}
	-re ".count . 0x3.$gdb_prompt $" {
	set description "next over conditional stack alignment code 1"
	set command "next"
	}
	-re ".if .i != 0.$gdb_prompt $" {
	set description "next over conditional stack alignment code 2"
	set command "next"
	}
	-re ".alloca .i - 4.$gdb_prompt $" {
	set description "next over conditional stack alignment alloca"
	set command "next"
	}
	-re ".cmdsize = 1.$gdb_prompt $" {
	set description "step over cmdsize initialization"
	set command "next"
	}
	-re ".cmdarg = . xmalloc.*$gdb_prompt $" {
	set description "next over cmdarg initialization via xmalloc"
	set command "next"
	}
	-re ".ncmd = 0.$gdb_prompt $" {
	set description "next over ncmd initialization"
	set command "next"
	}
	-re ".dirsize = 1.$gdb_prompt $" {
	set description "next over dirsize initialization"
	set command "next"
	}
	-re ".dirarg = . xmalloc.*$gdb_prompt $" {
	return
	}
	-re ".setlocale .LC_MESSAGES,.$gdb_prompt $" {
	set description "next over setlocale LC_MESSAGES"
	set command "next"
	}
	-re ".setlocale .LC_CTYPE,.$gdb_prompt $" {
	set description "next over setlocale LC_CTYPE"
	set command "next"
	}
	-re ".bindtextdomain .PACKAGE, LOCALEDIR.;.$gdb_prompt $" {
	set description "next over bindtextdomain"
	set command "next"
	}
	-re ".textdomain .PACKAGE.;.$gdb_prompt $" {
	set description "next over textdomain PACKAGE"
	set command "next"
	}
	-re "\[ \t\]+\{\r\n$gdb_prompt $" {
	setup_xfail "mips--irix5"
	fail "$description ended up at odd location"
	}
	-re ".main.c.No such file or directory.*$gdb_prompt $" {
	setup_xfail "rs6000--aix3"
	fail "must be able to list source lines"
	return
	}
	-re ".*$gdb_prompt $" {
	fail "unknown source line after $description"
	return
	}
	default {
	fail "unknown source line near main"
	return
	}
	}
	send_gdb "$command\n"
	gdb_expect {
	-re ".*No such file or directory.\r\n$gdb_prompt $" {
	fail "$description (no source available)"
	}
	-re ".A file or directory . does not exist..\r\n$gdb_prompt $" {
	fail "$description (no source available)"
	}
	-re ".*$gdb_prompt $" {
	pass "$description"
	}
	timeout {
	fail "$description (timeout)"
	}
	}
	}
	}

	proc test_with_self { executable } {
	global gdb_prompt
	global tool
	global det_file
	global decimal
	global timeout

	# load yourself into the debugger
	# This can take a relatively long time, particularly for testing where
	# the executable is being accessed over a network, or where gdb does not
	# support partial symbols for a particular target and has to load the
	# entire symbol table. Set the timeout to 10 minutes, which should be
	# adequate for most environments (it has timed out with 5 min on a
	# SPARCstation SLC under moderate load, so this isn't unreasonable).
	# After gdb is started, set the timeout to 30 seconds for the duration
	# of this test, and then back to the original value.

	set oldtimeout $timeout
	set timeout 600
	verbose "Timeout is now $timeout seconds" 2
	if {[gdb_load $executable] <0} then {
	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2
	return -1
	}
	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2

	# disassemble yourself
	gdb_test "x/10i main" \
	"x/10i.main.main.$decimal.main.$decimal." \
	"Disassemble main"

	# Set a breakpoint at main
	gdb_test "break captured_main" \
	"Breakpoint.at. file., line." \
	"breakpoint in captured_main"

	# We'll need this when we send a ^C to GDB. Need to do it before we
	# run the program and gdb starts saving and restoring tty states.
	# On Ultrix, we don't need it and it is really slow (because shell_escape
	# doesn't use vfork).
	if ![istarget "--ultrix*"] then {
	gdb_test "shell stty intr '^C'" "" \
	"set interrupt character in test_with_self"
	}

	# FIXME: If we put this after the run to main, the first list
	# command doesn't print the same line as the current line where
	# gdb is stopped.
	gdb_test "set listsize 1" "" "set listsize to 1"

	# run yourself
	# It may take a very long time for the inferior gdb to start (lynx),
	# so we bump it back up for the duration of this command.
	set timeout 600

	set description "run until breakpoint at captured_main"
	send_gdb "run -nw\n"
	gdb_expect {
	-re "Starting program.Breakpoint \[0-9\]+,.captured_main .data.* at .main.c:.$gdb_prompt $" {
	pass "$description"
	}
	-re "Starting program.Breakpoint \[0-9\]+,.captured_main .data.*$gdb_prompt $" {
	xfail "$description (line numbers scrambled?)"
	}
	-re "vfork: No more processes.*$gdb_prompt $" {
	fail "$description (out of virtual memory)"
	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2
	return -1
	}
	-re ".*$gdb_prompt $" {
	fail "$description"
	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2
	return -1
	}
	timeout {
	fail "$description (timeout)"
	}
	}

	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2

	# do we have a version number ?
	send_gdb "print version\n"
	gdb_expect {
	-re ".\[0-9\]+ = .\[0-9.\]+.*$gdb_prompt $" {
	pass "printed version as string"
	}
	-re ".\[0-9\]+ = +0x.\[0-9.\]+.$gdb_prompt $" {
	pass "printed version as pointer"
	}
	-re ".\[0-9\]+ = +.+ +0x.\[0-9.\]+.$gdb_prompt $" {
	pass "printed version with cast"
	}
	-re ".*$gdb_prompt $" { fail "printed version" }
	timeout { fail "(timeout) printed version" }
	}

	do_steps_and_nexts

	gdb_test "print \"foo\"" ".\[0-9\]+ = \"foo\"" "print a string"

	# do_steps_and_nexts left us ready to execute an xmalloc call,
	# so give that a try.
	# If we don't actually enter the xmalloc call when we give a
	# step command that seems like a genuine bug. It seems to happen
	# on most RISC processors.
	setup_xfail "alpha--" "mips--"
	set description "step into xmalloc call"
	send_gdb "step\n"
	gdb_expect {
	-re "xmalloc.size=.at.utils.c.$gdb_prompt $" {
	pass "$description"
	}
	-re ".*No such file or directory.\r\n$gdb_prompt $" {
	pass "$description (no source available)"
	}
	-re "A file or directory .* does not exist..\r\n$gdb_prompt $" {
	pass "$description (no source available)"
	}
	-re ".*$gdb_prompt $" {
	fail "$description"
	}
	timeout {
	fail "$description (timeout)"
	}
	}

	# start the "xgdb" process
	send_gdb "continue\n"
	gdb_expect {
	-re "GNU gdb \[0-9\.\].
	Copyright \[0-9\]* Free Software Foundation, Inc.*
	GDB is free software, covered by the GNU General Public License, and you are.*
	welcome to change it and/or distribute copies of it under certain conditions.*
	Type \"show copying\" to see the conditions.*
	There is absolutely no warranty for GDB. Type \"show warranty\" for details.*
	This GDB was configured as .*$gdb_prompt $"\
	{ pass "xgdb is at prompt" }
	-re "GDB is free software and you are welcome to distribute copies of it.*
	under certain conditions; type \"show copying\" to see the conditions..*
	There is absolutely no warranty for GDB; type \"show warranty\" for details..*
	GDB.Copyright \[0-9\]+ Free Software Foundation, Inc..$gdb_prompt $"\
	{ pass "xgdb is at prompt (obsolescent gdb)" }
	-re ".*$gdb_prompt $" { fail "xgdb is at prompt" }
	timeout { fail "(timeout) xgdb is at prompt" }
	}

	# set xgdb prompt so we can tell which is which
	send_gdb "set prompt (xgdb) \n"
	gdb_expect {
	-re "\[(\]xgdb\[)\].*\[(\]xgdb\[)\] $" { pass "Set xgdb prompt" }
	-re ".*$gdb_prompt $" { fail "Set xgdb prompt" }
	default { fail "(timeout) Set xgdb prompt" }
	}

	# kill the xgdb process
	set description "send ^C to child process"
	send_gdb "\003"
	gdb_expect {
	-re "Program received signal SIGINT.*$gdb_prompt $" {
	pass "$description"
	}
	-re ".*$gdb_prompt $" {
	fail "$description"
	}
	timeout {
	fail "$description (timeout)"
	}
	}

	set description "send SIGINT signal to child process"
	send_gdb "signal SIGINT\n"
	gdb_expect {
	-re "Continuing with signal SIGINT.*$gdb_prompt $" {
	pass "$description"
	}
	-re ".*$gdb_prompt $" {
	fail "$description"
	}
	timeout {
	fail "$description (timeout)"
	}
	}

	# get a stack trace
	#
	# This fails on some linux systems for unknown reasons. On the
	# systems where it fails, sometimes it works fine when run manually.
	# The testsuite failures may not be limited to just aout systems.
	setup_xfail "i*86-pc-linuxaout-gnu"
	set description "backtrace through signal handler"
	send_gdb "backtrace\n"
	gdb_expect {
	-re "#0.read.in main \\(.\\) at .main\\.c.*$gdb_prompt $" {
	pass "$description"
	}
	-re ".*$gdb_prompt $" {
	# On the alpha, we hit the infamous problem about gdb
	# being unable to get the frame pointer (mentioned in
	# gdb/README). As it is intermittent, there is no way to
	# XFAIL it which will give us an XPASS if the problem goes
	# away.
	setup_xfail "alpha--osf*"
	fail "$description"
	}
	timeout {
	fail "$description (timeout)"
	}
	}


	# Set the timeout back to the value it had when we were called.
	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2

	# Restart gdb in case next test expects it to be started already.
	return 0
	}

	# Find a pathname to a file that we would execute if the shell was asked
	# to run $arg using the current PATH.

	proc find_gdb { arg } {

	# If the arg directly specifies an existing executable file, then
	# simply use it.

	if [file executable $arg] then {
	return $arg
	}

	set result [which $arg]
	if [string match "/" [ string range $result 0 0 ]] then {
	return $result
	}

	# If everything fails, just return the unqualified pathname as default
	# and hope for best.

	return $arg
	}

	# Run the test with self.
	# Copy the file executable file in case this OS doesn't like to edit its own
	# text space.

	set GDB_FULLPATH [find_gdb $GDB]

	# Remove any old copy lying around.
	remote_file host delete x$tool

	gdb_start
	set file [remote_download host $GDB_FULLPATH x$tool]
	set result [test_with_self $file];
	gdb_exit;
	catch "remote_file host delete $file";

	if {$result <0} then {
	warning "Couldn't test self"
	return -1
	}