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# Copyright (C) 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
# Please email any bugs, comments, and/or additions to this file to:
# bug-gdb@prep.ai.mit.edu
# This file was written by Fred Fish. (fnf@cygnus.com)
# Generic gdb subroutines that should work for any target. If these
# need to be modified for any target, it can be done with a variable
# or by passing arguments.
global GDB
if ![info exists GDB] then {
set GDB [findfile $base_dir/../gdb $base_dir/../gdb [transform gdb ]]
}
global GDBFLAGS
if ![info exists GDBFLAGS] then {
set GDBFLAGS ""
}
# set the prompt if it doesn't exist
global prompt
if ![info exists prompt] then {
set prompt "\[(\]gdb\[)\]"
}
#
# gdb_version -- extract and print the version number of gcc
#
proc default_gdb_version {} {
global GDB
global GDBFLAGS
if {[which $GDB] != 0} then {
set tmp [exec echo "q" | $GDB]
regexp " \[0-9\.\]+" $tmp version
clone_output "[which $GDB] version$version $GDBFLAGS\n"
} else {
warning "$GDB does not exist"
}
}
#
# gdb_unload -- unload a file if one is loaded
#
proc gdb_unload {} {
global verbose
global GDB
global prompt
send "file\n"
expect {
-re "No exec file now.*\r" { exp_continue }
-re "No symbol file now.*\r" { exp_continue }
-re "A program is being debugged already..*Kill it.*y or n. $"\
{ send "y\n"
verbose "\t\tKilling previous program being debugged"
exp_continue
}
-re "Discard symbol table from .*y or n. $" {
send "y\n"
exp_continue
}
-re "$prompt $" {}
timeout {
perror "couldn't unload file in $GDB (timed out)."
return -1
}
}
}
# Many of the tests depend on setting breakpoints at various places and
# running until that breakpoint is reached. At times, we want to start
# with a clean-slate with respect to breakpoints, so this utility proc
# lets us do this without duplicating this code everywhere.
#
proc delete_breakpoints {} {
global prompt
send "delete breakpoints\n"
expect {
-re "Delete all breakpoints.*y or n. $" {
send "y\n"
exp_continue
}
-re "y\r\n$prompt $" {}
-re ".*$prompt $" { # This happens if there were no breakpoints
}
timeout { perror "Delete all breakpoints (timeout)" ; return }
}
send "info breakpoints\n"
expect {
-re "No breakpoints or watchpoints..*$prompt $" {}
-re ".*$prompt $" { perror "breakpoints not deleted" ; return }
timeout { perror "info breakpoints (timeout)" ; return }
}
}
#
#
#
proc gdb_run_cmd {} {
send "run\n"
expect {
-re "The program .* has been started already.*y or n. $" {
send "y\n"
exp_continue
}
# The following pattern matches up to to the first newline *only*.
# Using ``.*$'' could swallow up output that we attempt to match
# elsewhere.
-re "Starting program: \[^\n\]*" {}
}
}
# Set breakpoint at function and run gdb until it breaks there.
# Since this is the only breakpoint that will be set, if it stops
# at a breakpoint, we will assume it is the one we want. We can't
# just compare to "function" because it might be a fully qualified,
# single quoted C++ function specifier.
proc runto { function } {
global prompt
global decimal
send "delete\n"
expect {
-re "delete.*Delete all breakpoints.*y or n. $" {
send "y\n"
expect {
-re "$prompt $" {}
timeout { fail "deleting breakpoints (timeout)" ; return 0 }
}
}
-re ".*$prompt $" {}
timeout { fail "deleting breakpoints (timeout)" ; return 0 }
}
send "break $function\n"
# The first two regexps are what we get with -g, the third is without -g.
expect {
-re "Breakpoint \[0-9\]* at 0x\[0-9a-f\]*: file .*, line $decimal.\r\n$prompt $" {}
-re "Breakpoint \[0-9\]*: file .*, line $decimal.\r\n$prompt $" {}
-re "Breakpoint \[0-9\]* at 0x\[0-9a-f\]*.*$prompt $" {}
-re "$prompt $" { fail "setting breakpoint at $function" ; return 0 }
timeout { fail "setting breakpoint at $function (timeout)" ; return 0 }
}
gdb_run_cmd
# the "at foo.c:36" output we get with -g.
# the "in func" output we get without -g.
expect {
-re "Break.* at .*:$decimal.*$prompt $" {
return 1
}
-re "Breakpoint \[0-9\]*, \[0-9xa-f\]* in $function.*$prompt $" {
return 1
}
-re "$prompt $" {
fail "running to $function"
return 0
}
timeout {
fail "running to $function (timeout)"
return 0
}
}
}
#
# gdb_test -- send a command to gdb and test the result.
# Takes three parameters.
# Parameters:
# First one is the command to execute,
# Second one is the pattern to match for a PASS,
# Third one is an optional message to be printed. If this
# a null string "", then the pass/fail messages are not printed.
# Returns:
# 1 if the test failed,
# 0 if the test passes,
# -1 if there was an internal error.
#
proc gdb_test { args } {
global verbose
global prompt
global GDB
global spawn_id
if [llength $args]==3 then {
set message [lindex $args 2]
} else {
set message [lindex $args 0]
}
set command [lindex $args 0]
set pattern [lindex $args 1]
if $verbose>2 then {
send_user "Sending \"$command\" to gdb\n"
send_user "Looking to match \"$pattern\"\n"
send_user "Message is \"$message\"\n"
}
set result -1
set errmess ""
# trap the send so any problems don't crash things
catch "send \"$command\n\"" errmess
if [string match "write.spawn_id=\[0-9\]+.:" $errmess] then {
perror "sent \"$command\" got expect error \"$errmess\""
catch "close"
gdb_start
return -1
}
expect {
-re ".*Ending remote debugging.*$prompt$" {
if ![isnative] then {
warning "Can`t communicate to remote target."
}
gdb_exit
gdb_start
set result -1
}
-re "$pattern.*$prompt $" {
if ![string match "" $message] then {
pass "$message"
}
set result 0
}
-re "Undefined command:.*$prompt" {
perror "Undefined command \"$command\"."
set result 1
}
-re "Ambiguous command.*$prompt $" {
perror "\"$command\" is not a unique command name."
set result 1
}
-re ".*$prompt $" {
if ![string match "" $message] then {
fail "$message"
}
set result 1
}
"<return>" {
send "\n"
perror "Window too small."
}
-re "\[(\]+y or n\[)\]+ " {
send "n\n"
perror "Got interactive prompt."
}
eof {
perror "Process no longer exists"
return -1
}
buffer_full {
perror "internal buffer is full."
}
timeout {
if ![string match "" $message] then {
fail "(timeout) $message"
}
set result 1
}
}
return $result
}
# Given an input string, adds backslashes as needed to create a
# regexp that will match the string.
proc string_to_regexp {str} {
set result $str
regsub -all {[]*+.|()^$\[]} $str {\\&} result
return $result
}
# Same as gdb_test, but the second parameter is not a regexp,
# but a string that must match exactly.
proc gdb_test_exact { args } {
set command [lindex $args 0]
set pattern [string_to_regexp [lindex $args 1]]
if [llength $args]==3 then {
set message [lindex $args 2]
} else {
set message $command
}
return [gdb_test $command $pattern $message]
}
proc gdb_reinitialize_dir { subdir } {
global prompt
send "dir\n"
expect {
-re "Reinitialize source path to empty.*" {
send "y\n"
expect {
-re "Source directories searched.*$prompt $" {
send "dir $subdir\n"
expect {
-re "Source directories searched.*$prompt $" {
verbose "Dir set to $subdir"
}
-re ".*$prompt $" {
perror "Dir \"$subdir\" failed."
}
}
}
-re ".*$prompt $" {
perror "Dir \"$subdir\" failed."
}
}
}
-re ".*$prompt $" {
perror "Dir \"$subdir\" failed."
}
}
}
#
# gdb_exit -- exit the GDB, killing the target program if necessary
#
proc default_gdb_exit {} {
global GDB
global GDBFLAGS
global verbose
verbose "Quitting $GDB $GDBFLAGS"
# This used to be 1 for unix-gdb.exp
set timeout 5
# We used to try to send "quit" to GDB, and wait for it to die.
# Dealing with all the cases and errors got pretty hairy. Just close it,
# that is simpler.
close
# Omitting this probably would cause strange timing-dependent failures.
wait
}
#
# gdb_load -- load a file into the debugger.
# return a -1 if anything goes wrong.
#
proc gdb_file_cmd { arg } {
global verbose
global loadpath
global loadfile
global GDB
global prompt
global spawn_id
send "file $arg\n"
expect {
-re "Reading symbols from.*done.*$prompt $" {
verbose "\t\tLoaded $arg into the $GDB"
return 0
}
-re "has no symbol-table.*$prompt $" {
perror "$arg wasn't compiled with \"-g\""
return -1
}
-re "A program is being debugged already.*Kill it.*y or n. $" {
send "y\n"
verbose "\t\tKilling previous program being debugged"
exp_continue
}
-re "Load new symbol table from \".*\".*y or n. $" {
send "y\n"
expect {
-re "Reading symbols from.*done.*$prompt $" {
verbose "\t\tLoaded $arg with new symbol table into $GDB"
return 0
}
timeout {
perror "(timeout) Couldn't load $arg, other program already l
oaded."
return -1
}
}
}
-re ".*No such file or directory.*$prompt $" {
perror "($arg) No such file or directory\n"
return -1
}
-re "$prompt $" {
perror "couldn't load $arg into $GDB."
return -1
}
timeout {
perror "couldn't load $arg into $GDB (timed out)."
return -1
}
eof {
# This is an attempt to detect a core dump, but seems not to
# work. Perhaps we need to match .* followed by eof, in which
# expect does not seem to have a way to do that.
perror "couldn't load $arg into $GDB (end of file)."
return -1
}
}
}
#
# start gdb -- start gdb running, default procedure
#
proc default_gdb_start { } {
global verbose
global GDB
global GDBFLAGS
global prompt
global spawn_id
global timeout
verbose "Spawning $GDB $GDBFLAGS"
if { [which $GDB] == 0 } then {
perror "$GDB does not exist."
exit 1
}
set oldtimeout $timeout
set timeout [expr "$timeout + 60"]
if [ llength $GDBFLAGS ] then {
spawn $GDB $GDBFLAGS
} else {
spawn $GDB
}
expect {
-re ".*\r\n$prompt $" {
verbose "GDB initialized."
}
-re "$prompt $" {
perror "GDB never initialized."
return -1
}
timeout {
perror "(timeout) GDB never initialized."
return -1
}
}
set timeout $oldtimeout
# force the height to "unlimited", so no pagers get used
send "set height 0\n"
expect {
-re ".*$prompt $" {
verbose "Setting height to 0." 2
}
timeout {
warning "Couldn't set the height to 0."
}
}
# force the width to "unlimited", so no wraparound occurs
send "set width 0\n"
expect {
-re ".*$prompt $" {
verbose "Seting width to 0." 2
}
timeout {
warning "Couldn't set the width to 0."
}
}
}
#
# FIXME: this is a copy of the new library procedure, but it's here too
# till the new dejagnu gets installed everywhere. I'd hate to break the
# gdb tests suite.
#
global argv0
if ![info exists argv0] then {
proc exp_continue { } {
continue -expect
}
}
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