499 lines
12 KiB
Text
499 lines
12 KiB
Text
# Copyright (C) 1992, 1994 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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# Please email any bugs, comments, and/or additions to this file to:
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# bug-gdb@prep.ai.mit.edu
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# This file was written by Fred Fish. (fnf@cygnus.com)
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# Generic gdb subroutines that should work for any target. If these
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# need to be modified for any target, it can be done with a variable
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# or by passing arguments.
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global GDB
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if ![info exists GDB] then {
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set GDB [findfile $base_dir/../gdb $base_dir/../gdb [transform gdb ]]
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}
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global GDBFLAGS
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if ![info exists GDBFLAGS] then {
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set GDBFLAGS ""
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}
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# set the prompt if it doesn't exist
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global prompt
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if ![info exists prompt] then {
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set prompt "\[(\]gdb\[)\]"
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}
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#
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# gdb_version -- extract and print the version number of gcc
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#
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proc default_gdb_version {} {
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global GDB
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global GDBFLAGS
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if {[which $GDB] != 0} then {
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set tmp [exec echo "q" | $GDB]
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regexp " \[0-9\.\]+" $tmp version
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clone_output "[which $GDB] version$version $GDBFLAGS\n"
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} else {
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warning "$GDB does not exist"
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}
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}
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#
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# gdb_unload -- unload a file if one is loaded
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#
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proc gdb_unload {} {
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global verbose
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global GDB
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global prompt
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send "file\n"
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expect {
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-re "No exec file now.*\r" { exp_continue }
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-re "No symbol file now.*\r" { exp_continue }
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-re "A program is being debugged already..*Kill it.*y or n. $"\
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{ send "y\n"
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verbose "\t\tKilling previous program being debugged"
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exp_continue
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}
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-re "Discard symbol table from .*y or n. $" {
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send "y\n"
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exp_continue
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}
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-re "$prompt $" {}
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timeout {
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perror "couldn't unload file in $GDB (timed out)."
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return -1
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}
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}
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}
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# Many of the tests depend on setting breakpoints at various places and
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# running until that breakpoint is reached. At times, we want to start
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# with a clean-slate with respect to breakpoints, so this utility proc
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# lets us do this without duplicating this code everywhere.
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#
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proc delete_breakpoints {} {
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global prompt
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send "delete breakpoints\n"
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expect {
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-re "Delete all breakpoints.*y or n. $" {
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send "y\n"
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exp_continue
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}
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-re "y\r\n$prompt $" {}
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-re ".*$prompt $" { # This happens if there were no breakpoints
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}
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timeout { perror "Delete all breakpoints (timeout)" ; return }
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}
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send "info breakpoints\n"
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expect {
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-re "No breakpoints or watchpoints..*$prompt $" {}
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-re ".*$prompt $" { perror "breakpoints not deleted" ; return }
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timeout { perror "info breakpoints (timeout)" ; return }
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}
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}
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#
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# Generic run command.
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#
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# The second pattern below matches up to the first newline *only*.
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# Using ``.*$'' could swallow up output that we attempt to match
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# elsewhere.
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#
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proc gdb_run_cmd {} {
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send "run\n"
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expect {
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-re "The program .* has been started already.*y or n. $" {
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send "y\n"
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exp_continue
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}
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-re "Starting program: \[^\n\]*" {}
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}
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}
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# Set breakpoint at function and run gdb until it breaks there.
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# Since this is the only breakpoint that will be set, if it stops
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# at a breakpoint, we will assume it is the one we want. We can't
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# just compare to "function" because it might be a fully qualified,
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# single quoted C++ function specifier.
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proc runto { function } {
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global prompt
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global decimal
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send "delete\n"
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expect {
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-re "delete.*Delete all breakpoints.*y or n. $" {
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send "y\n"
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expect {
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-re "$prompt $" {}
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timeout { fail "deleting breakpoints (timeout)" ; return 0 }
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}
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}
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-re ".*$prompt $" {}
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timeout { fail "deleting breakpoints (timeout)" ; return 0 }
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}
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send "break $function\n"
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# The first two regexps are what we get with -g, the third is without -g.
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expect {
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-re "Breakpoint \[0-9\]* at 0x\[0-9a-f\]*: file .*, line $decimal.\r\n$prompt $" {}
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-re "Breakpoint \[0-9\]*: file .*, line $decimal.\r\n$prompt $" {}
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-re "Breakpoint \[0-9\]* at 0x\[0-9a-f\]*.*$prompt $" {}
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-re "$prompt $" { fail "setting breakpoint at $function" ; return 0 }
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timeout { fail "setting breakpoint at $function (timeout)" ; return 0 }
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}
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gdb_run_cmd
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# the "at foo.c:36" output we get with -g.
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# the "in func" output we get without -g.
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expect {
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-re "Break.* at .*:$decimal.*$prompt $" {
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return 1
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}
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-re "Breakpoint \[0-9\]*, \[0-9xa-f\]* in $function.*$prompt $" {
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return 1
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}
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-re "$prompt $" {
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fail "running to $function"
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return 0
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}
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timeout {
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fail "running to $function (timeout)"
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return 0
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}
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}
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}
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#
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# gdb_test -- send a command to gdb and test the result.
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# Takes three parameters.
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# Parameters:
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# First one is the command to execute,
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# Second one is the pattern to match for a PASS,
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# Third one is an optional message to be printed. If this
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# a null string "", then the pass/fail messages are not printed.
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# Returns:
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# 1 if the test failed,
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# 0 if the test passes,
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# -1 if there was an internal error.
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#
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proc gdb_test { args } {
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global verbose
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global prompt
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global GDB
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global spawn_id
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if [llength $args]==3 then {
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set message [lindex $args 2]
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} else {
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set message [lindex $args 0]
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}
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set command [lindex $args 0]
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set pattern [lindex $args 1]
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if $verbose>2 then {
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send_user "Sending \"$command\" to gdb\n"
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send_user "Looking to match \"$pattern\"\n"
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send_user "Message is \"$message\"\n"
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}
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set result -1
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set errmess ""
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if ![string match $command ""] {
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# trap the send so any problems don't crash things
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catch "send \"$command\n\"" errmess
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if [string match "write.spawn_id=\[0-9\]+.:" $errmess] then {
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perror "sent \"$command\" got expect error \"$errmess\""
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catch "close"
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gdb_start
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return -1
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}
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}
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expect {
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-re ".*Ending remote debugging.*$prompt$" {
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if ![isnative] then {
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warning "Can`t communicate to remote target."
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}
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gdb_exit
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gdb_start
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set result -1
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}
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-re "$pattern.*$prompt $" {
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if ![string match "" $message] then {
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pass "$message"
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}
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set result 0
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}
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-re "Undefined command:.*$prompt" {
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perror "Undefined command \"$command\"."
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set result 1
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}
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-re "Ambiguous command.*$prompt $" {
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perror "\"$command\" is not a unique command name."
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set result 1
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}
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-re ".*$prompt $" {
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if ![string match "" $message] then {
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fail "$message"
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}
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set result 1
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}
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"<return>" {
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send "\n"
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perror "Window too small."
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}
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-re "\[(\]+y or n\[)\]+ " {
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send "n\n"
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perror "Got interactive prompt."
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}
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eof {
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perror "Process no longer exists"
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return -1
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}
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buffer_full {
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perror "internal buffer is full."
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}
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timeout {
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if ![string match "" $message] then {
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fail "(timeout) $message"
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}
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set result 1
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}
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}
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return $result
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}
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# Given an input string, adds backslashes as needed to create a
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# regexp that will match the string.
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proc string_to_regexp {str} {
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set result $str
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regsub -all {[]*+.|()^$\[]} $str {\\&} result
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return $result
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}
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# Same as gdb_test, but the second parameter is not a regexp,
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# but a string that must match exactly.
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proc gdb_test_exact { args } {
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set command [lindex $args 0]
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set pattern [string_to_regexp [lindex $args 1]]
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if [llength $args]==3 then {
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set message [lindex $args 2]
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} else {
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set message $command
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}
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return [gdb_test $command $pattern $message]
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}
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proc gdb_reinitialize_dir { subdir } {
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global prompt
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send "dir\n"
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expect {
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-re "Reinitialize source path to empty.*" {
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send "y\n"
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expect {
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-re "Source directories searched.*$prompt $" {
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send "dir $subdir\n"
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expect {
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-re "Source directories searched.*$prompt $" {
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verbose "Dir set to $subdir"
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}
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-re ".*$prompt $" {
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perror "Dir \"$subdir\" failed."
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}
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}
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}
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-re ".*$prompt $" {
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perror "Dir \"$subdir\" failed."
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}
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}
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}
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-re ".*$prompt $" {
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perror "Dir \"$subdir\" failed."
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}
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}
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}
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#
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# gdb_exit -- exit the GDB, killing the target program if necessary
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#
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proc default_gdb_exit {} {
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global GDB
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global GDBFLAGS
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global verbose
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verbose "Quitting $GDB $GDBFLAGS"
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# This used to be 1 for unix-gdb.exp
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set timeout 5
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# We used to try to send "quit" to GDB, and wait for it to die.
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# Dealing with all the cases and errors got pretty hairy. Just close it,
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# that is simpler.
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close
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# Omitting this probably would cause strange timing-dependent failures.
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wait
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}
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#
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# gdb_load -- load a file into the debugger.
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# return a -1 if anything goes wrong.
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#
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proc gdb_file_cmd { arg } {
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global verbose
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global loadpath
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global loadfile
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global GDB
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global prompt
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global spawn_id
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send "file $arg\n"
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expect {
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-re "Reading symbols from.*done.*$prompt $" {
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verbose "\t\tLoaded $arg into the $GDB"
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return 0
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}
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-re "has no symbol-table.*$prompt $" {
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perror "$arg wasn't compiled with \"-g\""
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return -1
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}
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-re "A program is being debugged already.*Kill it.*y or n. $" {
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send "y\n"
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verbose "\t\tKilling previous program being debugged"
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exp_continue
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}
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-re "Load new symbol table from \".*\".*y or n. $" {
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send "y\n"
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expect {
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-re "Reading symbols from.*done.*$prompt $" {
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verbose "\t\tLoaded $arg with new symbol table into $GDB"
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return 0
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}
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timeout {
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perror "(timeout) Couldn't load $arg, other program already l
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oaded."
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return -1
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}
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}
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}
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-re ".*No such file or directory.*$prompt $" {
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perror "($arg) No such file or directory\n"
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return -1
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}
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-re "$prompt $" {
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perror "couldn't load $arg into $GDB."
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return -1
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}
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timeout {
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perror "couldn't load $arg into $GDB (timed out)."
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return -1
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}
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eof {
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# This is an attempt to detect a core dump, but seems not to
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# work. Perhaps we need to match .* followed by eof, in which
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# expect does not seem to have a way to do that.
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perror "couldn't load $arg into $GDB (end of file)."
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return -1
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}
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}
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}
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#
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# start gdb -- start gdb running, default procedure
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#
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proc default_gdb_start { } {
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global verbose
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global GDB
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global GDBFLAGS
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global prompt
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global spawn_id
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global timeout
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verbose "Spawning $GDB $GDBFLAGS"
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if { [which $GDB] == 0 } then {
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perror "$GDB does not exist."
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exit 1
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}
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set oldtimeout $timeout
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set timeout [expr "$timeout + 60"]
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if [ llength $GDBFLAGS ] then {
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spawn $GDB $GDBFLAGS
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} else {
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spawn $GDB
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}
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expect {
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-re ".*\r\n$prompt $" {
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verbose "GDB initialized."
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}
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-re "$prompt $" {
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perror "GDB never initialized."
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return -1
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}
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timeout {
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perror "(timeout) GDB never initialized."
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return -1
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}
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}
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set timeout $oldtimeout
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# force the height to "unlimited", so no pagers get used
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send "set height 0\n"
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expect {
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-re ".*$prompt $" {
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verbose "Setting height to 0." 2
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}
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timeout {
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warning "Couldn't set the height to 0."
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}
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}
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# force the width to "unlimited", so no wraparound occurs
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send "set width 0\n"
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expect {
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-re ".*$prompt $" {
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verbose "Seting width to 0." 2
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}
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timeout {
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warning "Couldn't set the width to 0."
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}
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}
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}
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#
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# FIXME: this is a copy of the new library procedure, but it's here too
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# till the new dejagnu gets installed everywhere. I'd hate to break the
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# gdb tests suite.
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#
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global argv0
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if ![info exists argv0] then {
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proc exp_continue { } {
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continue -expect
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}
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}
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