path: root/gdb/testsuite/gdb.base/break.exp

#   Copyright (C) 1988, 1990, 1991, 1992, 1994 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
}


#
# test running programs
#
set prms_id 0
set bug_id 0

set testfile "break"
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug additional_flags=-w}] != "" } {
    perror "Couldn't compile ${srcfile}"
    return -1
}

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}

if [target_info exists gdb_stub] {
    gdb_test "step" "(main.* at .*|.*in .*start.*)" "step for stub"
}
#
# test simple breakpoint setting commands
#

# Test deleting all breakpoints when there are none installed.
# Between 4.15 and 4.16 a change made gdb stop prompting when
# there are no user breakpoints installed.
# Note that gdb-init.exp provides a "delete_breakpoints" proc
# for general use elsewhere.

send_gdb "delete breakpoints\n"
expect {
    -i $gdb_spawn_id -re "Delete all breakpoints.*$" {
	    send_gdb "y\n"
	    expect {
		-re "$prompt $" {
		    setup_xfail "i*86-*-sysv4*" "sparc-sun-sunos4*" "alpha-dec-osf*" "mips-dec-ultrix*"
		    fail "Delete all breakpoints when none (unexpected prompt)"
		}
		timeout	{ fail "Delete all breakpoints when none (timeout after unexpected prompt)" }
	    }
	}
    -i $gdb_spawn_id -re ".*$prompt $"       { pass "Delete all breakpoints when none" }
    timeout	            { fail "Delete all breakpoints when none (timeout)" }
}

#
# test break at function
#
gdb_test "break main" \
    "Breakpoint.*at.* file .*$srcfile, line.*" \
    "breakpoint function"

#
# test break at function in file
#
gdb_test "break $srcfile:factorial" \
    "Breakpoint.*at.* file .*$srcfile, line.*" \
    "breakpoint function in file"

#
# test break at line number
#
gdb_test "break 64" \
    "Breakpoint.*at.* file .*$srcfile, line 64\\." \
    "breakpoint line number"

#
# test duplicate breakpoint
#
gdb_test "break 64" \
    "Note: breakpoint \[0-9\]+ also set at pc.*Breakpoint \[0-9\]+ at.* file .*$srcfile, line 64\\." \
    "breakpoint duplicate"

#
# test break at line number in file
#
gdb_test "break $srcfile:70" \
    "Breakpoint.*at.* file .*$srcfile, line 70\\." \
    "breakpoint line number in file"


#
# check to see what breakpoints are set
#
if [target_info exists gdb_stub] {
    set main_line 57
} else {
    set main_line 60
}

gdb_test "info break" \
    "Num Type\[ \]+Disp Enb Address\[ \]+What.*
\[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:$main_line.*
\[0-9\]+\[\t \]+breakpoint     keep y.* in factorial at .*$srcfile:76.*
\[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:64.*
\[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:64.*
\[0-9\]+\[\t \]+breakpoint     keep y.* in main at .*$srcfile:70" \
    "breakpoint info"


# FIXME: The rest of this test doesn't work with anything that can't
# handle arguments.
# Huh? There doesn't *appear* to be anything that passes arguments
# below.
if [istarget "mips-idt-*"] then {
    return
}

#
# run until the breakpoint at main is hit. For non-stubs-using targets.
#
if ![target_info exists use_gdb_stub] {
  if [istarget "*-*-vxworks*"] then {
    send_gdb "run vxmain \"2\"\n"
    set timeout 120
    verbose "Timeout is now $timeout seconds" 2
  } else {
	send_gdb "run\n"
  }
  expect {
    -re "The program .* has been started already.*y or n. $" {
	send_gdb "y\n"
	exp_continue
    }
    -re "Starting program.*Breakpoint \[0-9\]+,.*main .*argc.*argv.* at .*$srcfile:60.*60\[\t \]+if .argc.* \{.*$prompt $"\
	                    { pass "run until function breakpoint" }
    -re ".*$prompt $"       { fail "run until function breakpoint" }
    timeout	            { fail "run until function breakpoint (timeout)" }
  }
} else {
    gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:60.*60\[\t \]+if .argc.*\{" \
	    "stubs continue"
}

#
# run until the breakpoint at a line number
#
gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:64.*64\[\t \]+printf.*factorial.*" \
			"run until breakpoint set at a line number"

#
# Run until the breakpoint set in a function in a file
#
for {set i 6} {$i >= 1} {incr i -1} {
	gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, factorial \\(value=$i\\) at .*$srcfile:76.*76\[\t \]+if .value > 1. \{" \
			"run until file:function($i) breakpoint"
}

#
# run until the file:function breakpoint at a line number in a file
#
gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, main \\(argc=.*, argv=.*, envp=.*\\) at .*$srcfile:70.*70\[\t \]+return 0;" \
		"run until file:linenum breakpoint"

#
# delete all breakpoints so we can start over, course this can be a test too
#
delete_breakpoints

#
# test temporary breakpoint at function
#

gdb_test "tbreak main" "Breakpoint.*at.* file .*$srcfile, line.*" "Temporary breakpoint function"

#
# test break at function in file
#

gdb_test "tbreak $srcfile:factorial" "Breakpoint.*at.* file .*$srcfile, line.*" \
	"Temporary breakpoint function in file"

#
# test break at line number
#
send_gdb "tbreak 64\n"
expect {
    -re "Breakpoint.*at.* file .*$srcfile, line 64.*$prompt $" { pass "Temporary breakpoint line number" }
	-re ".*$prompt $"   { pass "Temporary breakpoint line number" }
	timeout	    { fail "breakpoint line number (timeout)" }
}

gdb_test "tbreak 60" "Breakpoint.*at.* file .*$srcfile, line 60.*" "Temporary breakpoint line number"

#
# test break at line number in file
#
send_gdb "tbreak $srcfile:70\n"
expect {
    -re "Breakpoint.*at.* file .*$srcfile, line 70.*$prompt $" { pass "Temporary breakpoint line number in file" }
	-re ".*$prompt $"   { pass "Temporary breakpoint line number in file" }
	timeout	    { fail "Temporary breakpoint line number in file (timeout)" }
}

gdb_test  "tbreak $srcfile:66" "Breakpoint.*at.* file .*$srcfile, line 66.*" "Temporary breakpoint line number in file"

#
# check to see what breakpoints are set (temporary this time)
#
gdb_test "info break" "Num Type.*Disp Enb Address.*What.*\[\r\n\]\[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:$main_line.*\[\r\n\]\[0-9\]+\[\t \]+breakpoint     del.*y.*in factorial at .*$srcfile:76.*\[\r\n\]\[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:64.*\[\r\n\]\[0-9\]+\[\t \]+breakpoint     del.*y.*in main at .*$srcfile:70.*" "Temporary breakpoint info"

proc test_clear_command {} {
    gdb_test "break main" "Breakpoint.*at.*"
    gdb_test "break main" "Breakpoint.*at.*"

    # We don't test that it deletes the correct breakpoints.  We do at
    # least test that it deletes more than one breakpoint.
    gdb_test "clear main" {Deleted breakpoints [0-9]+ [0-9]+.*}
}

#
# Test "next" over recursive function call.
#

proc test_next_with_recursion {} { 
    global prompt
    global decimal
    global noresults
    global binfile

    if [istarget "d10v-*-*"] {
	# Doesn't work right now.
	return;
    }
    if [target_info exists use_gdb_stub] {
	# Reload the program.
	delete_breakpoints
	gdb_load ${binfile};
    } else {
	# FIXME: should be using runto
	gdb_test "kill" "" "kill program" "Kill the program being debugged.*y or n. $" "y"

	delete_breakpoints
    }

    gdb_test "break factorial" "Breakpoint $decimal at .*" "break at factorial"

    # Run until we call factorial with 6

    if [istarget "*-*-vxworks*"] then {
	send_gdb "run vxmain \"6\"\n"
    } else {
	gdb_run_cmd
    }
    expect {
	-re "Break.* factorial .value=6. .*$prompt $" {}
	timeout { fail "run to factorial(6) (timeout)" ; return }
    }

    # Continue until we call factorial recursively with 5.

    send_gdb "continue\n"
    expect {
	-re "Continuing.*Break.* factorial .value=5. .*$prompt $" {}
	timeout { fail "continue to factorial(5) (timeout)" ; return }
    }

    # Do a backtrace just to confirm how many levels deep we are.

    set result [gdb_test "backtrace" \
	    "#0\[ \t\]+ factorial .value=5..*" \
	    "backtrace from factorial(5)"]
    if $result!=0 then { return }

    # Now a "next" should position us at the recursive call, which
    # we will be performing with 4.

    send_gdb "next\n"
    expect {
	-re ".* factorial .value - 1.;.*$prompt $" {}
	timeout { fail "next to recursive call (timeout)" ; return }
    }

    # Disable the breakpoint at the entry to factorial by deleting them all.
    # The "next" should run until we return to the next line from this
    # recursive call to factorial with 4.
    # Buggy versions of gdb will stop instead at the innermost frame on
    # the line where we are trying to "next" to.

    delete_breakpoints

    gdb_test next "\[0-9\]*\[\t \]+return \\(value\\);.*" \
	    "next over recursive call"

    # OK, we should be back in the same stack frame we started from.
    # Do a backtrace just to confirm.

    set result [gdb_test "backtrace" \
	    "#0\[ \t\]+ factorial .value=120.*\r\n#1\[ \t\]+ \[0-9a-fx\]+ in factorial .value=6..*" \
	    "backtrace from factorial(5.1)"]
    if { $result != 0 } { return }

    if { $noresults == 1 } { return }
    if [target_info exists use_gdb_stub] {
	gdb_breakpoint "exit"
	gdb_test "continue" "Continuing..*Breakpoint .*exit .code=0.*" "continue until exit in recursive next test"
    } else {
    # Continue until we exit.  Should not stop again.
    # Don't bother to check the output of the program, that may be
    # extremely tough for some remote systems.
	gdb_test "continue"\
		"Continuing.\[\r\n0-9\]+Program exited normally\\..*"\
		"continue until exit in recursive next test"
    }
}

test_clear_command
test_next_with_recursion

# Reset the default arguments for VxWorks
if [istarget "*-*-vxworks*"] {
    set timeout 10
    verbose "Timeout is now $timeout seconds" 2
    send_gdb "set args main\n"
    expect -re ".*$prompt $" {}
}