gdb/testsuite/gdb.gdb/selftest.exp - native_client/nacl-gdb - Git at Google

 # Copyright 1988, 1990-1992, 1994, 1997, 1999-2000, 2002-2012 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 3 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, see <http://www.gnu.org/licenses/>.

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


 # are we on a target board
 if { [is_remote target] || ![isnative] } then {
     return
 }

 # 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/..

     set unlikely_line 0
     for {set count 0} {$count < 32} {incr count} {
 	# NOTE: carlton/2002-12-11: The "initial brace" and
 	# "current_directory initialization" possibilities happen to
 	# me with GCC 3.1 on i686-pc-linux-gnu when I compile with
 	# optimization.
 	gdb_test_multiple "list" "list" {
 	    -re ".*context = data.*$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 $" {
 		set description "step over execarg initialization"
 		set command "step"
 	    }
 	    -re ".*pidarg = NULL.*$gdb_prompt $" {
 		set description "step over pidarg initialization"
 		set command "step"
 	    }
 	    -re ".*corearg = NULL.*$gdb_prompt $" {
 		set description "step over corearg initialization"
 		set command "step"
 	    }
 	    -re ".*pid_or_core_arg = NULL.*$gdb_prompt $" {
 		set description "step over pid_or_core_arg initialization"
 		set command "step"
 	    }
 	    -re ".*cdarg = NULL.*$gdb_prompt $" {
 		set description "step over cdarg initialization"
 		set command "step"
 	    }
 	    -re ".*ttyarg = NULL.*$gdb_prompt $" {
 		set description "step over ttyarg initialization"
 		set command "step"
 	    }
 	    -re ".*cmdarg_vec = NULL.*$gdb_prompt $" {
 		set description "step over cmdarg_vec initialization"
 		set command "step"
 	    }
 	    -re ".*pre_stat_chain = make_command_stats_cleanup.*$gdb_prompt $" {
 		set description "next over make_command_stats_cleanup and everything it calls"
 		set command "next"
 	    }
 	    -re ".*START_PROGRESS.*$gdb_prompt $" {
 		# Note: ezannoni/2004/02/17: This check should be
 		# removed, since as of today that source line is not
 		# in gdb anymore.
 		set description "next over START_PROGRESS and everything it calls"
 		set command "next"
 	    }
 	    -re ".*mac_init.*$gdb_prompt $" {
 		set description "next over mac_init and everything it calls"
 		set command "next"
 	    }
 	    -re ".*init_malloc.*$gdb_prompt $" {
 		# gdb 6.2.X is the last gdb which called init_malloc
 		set description "next over init_malloc and everything it calls"
 		set command "next"
 	    }
 	    -re ".*lim_at_start.*$gdb_prompt $" {
 		set description "next over lim_at_start initialization"
 		set command "next"
 	    }
 	    -re ".*count . 0x3.*$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 $" {
 		set description "next over conditional stack alignment alloca"
 		set command "next"
 	    }
 	    -re ".*dirsize = 1.*$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 $" {
 		set description "next over textdomain PACKAGE"
 		set command "next"
 	    }
 	    -re ".*VEC_cleanup .cmdarg_s.*$gdb_prompt $" {
 		set description "next over cmdarg_s VEC_cleanup"
 		set command "next"
 	    }
 	    -re "\[0-9\]+\[\t \]+\{\r\n$gdb_prompt $" {
 		set description "step over initial brace"
 		set command "step"
 	    }
 	    -re ".*current_directory = gdb_dirbuf.*$gdb_prompt $" {
 		set description "step over current_directory initialization"
 		set command "step"
 	    }
 	    -re ".*gdb_sysroot = .*$gdb_prompt $" {
 		# NOTE: carlton/2003-01-15: More optimization reordering,
 		# observed on GCC 3.1.
 		set description "step over gdb_sysroot initialization"
 		set command "step"
 	    }
 	    -re ".*ndir = 0.*$gdb_prompt $" {
 		set description "step over ndir initialization"
 		set command "step"
 	    }
 	    -re ".*instream = stdin.*$gdb_prompt $" {
 		set description "step over instream initialization"
 		set command "step"
 	    }
 	    -re ".*getcwd .gdb_dirbuf, sizeof .gdb_dirbuf.*$gdb_prompt $" {
 		set description "next over getcwd"
 		set command "next"
 	    }
 	    -re ".*gdb_program_name = xstrdup.*$gdb_prompt $" {
                 set description "next over xstrdup"
                 set command "next"
             }
             -re ".*quit_flag = 0.*$gdb_prompt $" {
 		set description "step over quit_flag initialization"
 		set command "step"
 	    }
 	    -re ".*gdb_stdout = stdio_fileopen .stdout.;.*$gdb_prompt $" {
 		set description "step over gdb_stdout initialization"
 		set command "step"
 	    }
 	    -re ".*gdb_stderr = stdio_fileopen .stderr.;.*$gdb_prompt $" {
 		set description "step over gdb_stderr initialization"
 		set command "step"
 	    }
 	    -re ".*main.c.*No such file or directory.*$gdb_prompt $" {
 		setup_xfail "rs6000-*-aix3*"
 		fail "must be able to list source lines"
 		return
 	    }
 	    -re ".*interpreter_p = xstrdup.*$gdb_prompt $" {
 		if { $unlikely_line == 0 } {
 		    # This is a GCC optimization bug; a constant has been
 		    # associated with the wrong line number.
 		    setup_xfail "*-*-*" gcc/26475
 		    fail "$description (unlikely line from gcc)"
 		    set unlikely_line 1
 		}
 		set description "next over xstrdup"
 		set command "next"
 	    }
 	    -re ".*$gdb_prompt $" {
 		fail "unknown source line after $description"
 		return
 	    }
 	    default {
 		fail "unknown source line near main"
 		return
 	    }
 	}
 	gdb_test_multiple "$command" "$description" {
 	    -re ".*No such file or directory.\r\n$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"
 	    }
 	}
     }
 }

 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

     global gdb_file_cmd_debug_info
     set gdb_file_cmd_debug_info "unset"

     set result [gdb_load $executable]
     set timeout $oldtimeout
     verbose "Timeout is now $timeout seconds" 2

     if { $result != 0 } then {
 	return -1
     }

     if { $gdb_file_cmd_debug_info != "debug" } then {
 	untested "No debug information, skipping testcase."
 	return -1
     }

     # 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_no_output "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"
     gdb_test_multiple "run -nw" "$description" {
 	-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
 	}
     }

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

     # do we have a version number ?
     gdb_test_multiple "print version" "printed version" {
 	-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"
 	}
     }

     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.
     # NOTE drow/2003-06-22: However, if we step back to the preceding two
     # lines, just keep stepping until we enter.
     set stepped_back 0
     setup_xfail "alpha-*-*" "mips-*-*"
     set description "step into xmalloc call"
     gdb_test_multiple "step" "$description" {
 	-re "ncmd = 0;.*$gdb_prompt $" {
 	    set stepped_back 1
 	    send_gdb "step\n"
 	    exp_continue
 	}
         -re ".*cmdarg = .* xmalloc.*$gdb_prompt $" {
 	    set stepped_back 1
 	    send_gdb "step\n"
 	    exp_continue
         }
 	-re "dirsize = 1;.*$gdb_prompt $" {
 	    set stepped_back 1
 	    send_gdb "step\n"
 	    exp_continue
 	}
 	-re ".*dirarg = .* xmalloc.*$gdb_prompt $" {
 	    if { $stepped_back == 1 } {
 		send_gdb "step\n"
 		exp_continue
 	    } else {
 		fail "$description"
 	    }
 	}
 	-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)"
 	}
     }

     # start the "xgdb" process
     if [target_info exists gdb,noinferiorio] {
 	# Maybe testing with a local extended-remote gdbserver.  With
 	# no way to interact with inferior GDB, all we can do is let
 	# it run.
 	send_gdb "continue\n"
 	# Wait a bit while the inferior gdb gets to its prompt.
 	sleep 1
     } else {
 	set test "xgdb is at prompt"
 	gdb_test_multiple "continue" $test {
 	    -re "GNU gdb \[0-9\.\]*.*Copyright \\(C\\) \[0-9\]* Free Software Foundation, Inc.*License GPLv3\\+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.*This is free software: you are free to change and redistribute it.*There is NO WARRANTY, to the extent permitted by law.  Type \"show copying\".*and \"show warranty\" for details.*This GDB was configured as .*$gdb_prompt $" {
 		pass $test
 	    }
 	}

 	# set xgdb prompt so we can tell which is which
 	gdb_test_multiple "set prompt (xgdb) " "Set xgdb_prompt" {
 	    -re "\[(\]xgdb\[)\].*\[(\]xgdb\[)\] $" {
 		pass "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"
     gdb_test "signal SIGINT" \
 	"Continuing with signal SIGINT.*" \
 	"$description"

     # 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"
     gdb_test_multiple "backtrace" "$description" {
 	-re "#0.*(read|poll).*in main \\(.*\\) at .*gdb\\.c.*$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"
 	}
     }


     # 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, 1990-1992, 1994, 1997, 1999-2000, 2002-2012 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 3 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, see <http://www.gnu.org/licenses/>.

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


	# are we on a target board
	if { [is_remote target] \|\| ![isnative] } then {
	return
	}

	# 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/..

	set unlikely_line 0
	for {set count 0} {$count < 32} {incr count} {
	# NOTE: carlton/2002-12-11: The "initial brace" and
	# "current_directory initialization" possibilities happen to
	# me with GCC 3.1 on i686-pc-linux-gnu when I compile with
	# optimization.
	gdb_test_multiple "list" "list" {
	-re ".context = data.$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 $" {
	set description "step over execarg initialization"
	set command "step"
	}
	-re ".pidarg = NULL.$gdb_prompt $" {
	set description "step over pidarg initialization"
	set command "step"
	}
	-re ".corearg = NULL.$gdb_prompt $" {
	set description "step over corearg initialization"
	set command "step"
	}
	-re ".pid_or_core_arg = NULL.$gdb_prompt $" {
	set description "step over pid_or_core_arg initialization"
	set command "step"
	}
	-re ".cdarg = NULL.$gdb_prompt $" {
	set description "step over cdarg initialization"
	set command "step"
	}
	-re ".ttyarg = NULL.$gdb_prompt $" {
	set description "step over ttyarg initialization"
	set command "step"
	}
	-re ".cmdarg_vec = NULL.$gdb_prompt $" {
	set description "step over cmdarg_vec initialization"
	set command "step"
	}
	-re ".pre_stat_chain = make_command_stats_cleanup.$gdb_prompt $" {
	set description "next over make_command_stats_cleanup and everything it calls"
	set command "next"
	}
	-re ".START_PROGRESS.$gdb_prompt $" {
	# Note: ezannoni/2004/02/17: This check should be
	# removed, since as of today that source line is not
	# in gdb anymore.
	set description "next over START_PROGRESS and everything it calls"
	set command "next"
	}
	-re ".mac_init.$gdb_prompt $" {
	set description "next over mac_init and everything it calls"
	set command "next"
	}
	-re ".init_malloc.$gdb_prompt $" {
	# gdb 6.2.X is the last gdb which called init_malloc
	set description "next over init_malloc and everything it calls"
	set command "next"
	}
	-re ".lim_at_start.$gdb_prompt $" {
	set description "next over lim_at_start initialization"
	set command "next"
	}
	-re ".count . 0x3.$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 $" {
	set description "next over conditional stack alignment alloca"
	set command "next"
	}
	-re ".dirsize = 1.$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 $" {
	set description "next over textdomain PACKAGE"
	set command "next"
	}
	-re ".VEC_cleanup .cmdarg_s.$gdb_prompt $" {
	set description "next over cmdarg_s VEC_cleanup"
	set command "next"
	}
	-re "\[0-9\]+\[\t \]+\{\r\n$gdb_prompt $" {
	set description "step over initial brace"
	set command "step"
	}
	-re ".current_directory = gdb_dirbuf.$gdb_prompt $" {
	set description "step over current_directory initialization"
	set command "step"
	}
	-re ".gdb_sysroot = .$gdb_prompt $" {
	# NOTE: carlton/2003-01-15: More optimization reordering,
	# observed on GCC 3.1.
	set description "step over gdb_sysroot initialization"
	set command "step"
	}
	-re ".ndir = 0.$gdb_prompt $" {
	set description "step over ndir initialization"
	set command "step"
	}
	-re ".instream = stdin.$gdb_prompt $" {
	set description "step over instream initialization"
	set command "step"
	}
	-re ".getcwd .gdb_dirbuf, sizeof .gdb_dirbuf.$gdb_prompt $" {
	set description "next over getcwd"
	set command "next"
	}
	-re ".gdb_program_name = xstrdup.$gdb_prompt $" {
	set description "next over xstrdup"
	set command "next"
	}
	-re ".quit_flag = 0.$gdb_prompt $" {
	set description "step over quit_flag initialization"
	set command "step"
	}
	-re ".gdb_stdout = stdio_fileopen .stdout.;.$gdb_prompt $" {
	set description "step over gdb_stdout initialization"
	set command "step"
	}
	-re ".gdb_stderr = stdio_fileopen .stderr.;.$gdb_prompt $" {
	set description "step over gdb_stderr initialization"
	set command "step"
	}
	-re ".main.c.No such file or directory.*$gdb_prompt $" {
	setup_xfail "rs6000--aix3"
	fail "must be able to list source lines"
	return
	}
	-re ".interpreter_p = xstrdup.$gdb_prompt $" {
	if { $unlikely_line == 0 } {
	# This is a GCC optimization bug; a constant has been
	# associated with the wrong line number.
	setup_xfail "--*" gcc/26475
	fail "$description (unlikely line from gcc)"
	set unlikely_line 1
	}
	set description "next over xstrdup"
	set command "next"
	}
	-re ".*$gdb_prompt $" {
	fail "unknown source line after $description"
	return
	}
	default {
	fail "unknown source line near main"
	return
	}
	}
	gdb_test_multiple "$command" "$description" {
	-re ".*No such file or directory.\r\n$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"
	}
	}
	}
	}

	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

	global gdb_file_cmd_debug_info
	set gdb_file_cmd_debug_info "unset"

	set result [gdb_load $executable]
	set timeout $oldtimeout
	verbose "Timeout is now $timeout seconds" 2

	if { $result != 0 } then {
	return -1
	}

	if { $gdb_file_cmd_debug_info != "debug" } then {
	untested "No debug information, skipping testcase."
	return -1
	}

	# 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_no_output "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"
	gdb_test_multiple "run -nw" "$description" {
	-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
	}
	}

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

	# do we have a version number ?
	gdb_test_multiple "print version" "printed version" {
	-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"
	}
	}

	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.
	# NOTE drow/2003-06-22: However, if we step back to the preceding two
	# lines, just keep stepping until we enter.
	set stepped_back 0
	setup_xfail "alpha--" "mips--"
	set description "step into xmalloc call"
	gdb_test_multiple "step" "$description" {
	-re "ncmd = 0;.*$gdb_prompt $" {
	set stepped_back 1
	send_gdb "step\n"
	exp_continue
	}
	-re ".cmdarg = . xmalloc.*$gdb_prompt $" {
	set stepped_back 1
	send_gdb "step\n"
	exp_continue
	}
	-re "dirsize = 1;.*$gdb_prompt $" {
	set stepped_back 1
	send_gdb "step\n"
	exp_continue
	}
	-re ".dirarg = . xmalloc.*$gdb_prompt $" {
	if { $stepped_back == 1 } {
	send_gdb "step\n"
	exp_continue
	} else {
	fail "$description"
	}
	}
	-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)"
	}
	}

	# start the "xgdb" process
	if [target_info exists gdb,noinferiorio] {
	# Maybe testing with a local extended-remote gdbserver. With
	# no way to interact with inferior GDB, all we can do is let
	# it run.
	send_gdb "continue\n"
	# Wait a bit while the inferior gdb gets to its prompt.
	sleep 1
	} else {
	set test "xgdb is at prompt"
	gdb_test_multiple "continue" $test {
	-re "GNU gdb \[0-9\.\].Copyright \\(C\\) \[0-9\]* Free Software Foundation, Inc.License GPLv3\\+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.This is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law. Type \"show copying\".and \"show warranty\" for details.This GDB was configured as .$gdb_prompt $" {
	pass $test
	}
	}

	# set xgdb prompt so we can tell which is which
	gdb_test_multiple "set prompt (xgdb) " "Set xgdb_prompt" {
	-re "\[(\]xgdb\[)\].*\[(\]xgdb\[)\] $" {
	pass "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"
	gdb_test "signal SIGINT" \
	"Continuing with signal SIGINT.*" \
	"$description"

	# 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"
	gdb_test_multiple "backtrace" "$description" {
	-re "#0.(read\|poll).in main \\(.\\) at .gdb\\.c.*$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"
	}
	}


	# 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
	}