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# Copyright (C) 1993 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:
# DejaGnu@cygnus.com
# This file was written by Ian Lance Taylor <ian@cygnus.com>.
# GDB support routines for a board using the MIPS remote debugging
# protocol. These are actually pretty generic.
# DejaGnu currently assumes that debugging is being done over the main
# console port. It would probably be more convenient for people using
# IDT boards to permit the debugging port and the connected port to be
# different, since an IDT board has two ports. This would require
# extending some of the tests in a fashion similar to that done for
# VxWorks, because the test output would appear on the other port,
# rather than being displayed by gdb.
load_lib remote.exp
load_lib gdb.exp
#
# gdb_version -- extract and print the version number of gdb
#
proc gdb_version {} {
global GDB
global GDBFLAGS
global prompt
set tmp [exec echo "q" | $GDB]
set version [lindex $tmp [lsearch $tmp "\[0-9\]*"]]
set version [string range $version 0 [expr [string length $version]-2]]
clone_output "[which $GDB] version $version $GDBFLAGS\n"
}
#
# gdb_load -- load a file into the GDB.
# Returns a 0 if there was an error,
# 1 if it load successfully.
#
proc gdb_load { arg } {
global verbose
global loadpath
global loadfile
global prompt
global spawn_id
global GDB
global expect_out
global targetname
set loadfile [file tail $arg]
set loadpath [file dirname $arg]
send "file $arg\n"
expect {
-re "A program is being debugged already..*Kill it.*y or n. $" {
send "y\n"
exp_continue
}
-re "Reading symbols from.*done..*$prompt $" {}
-re "$prompt $" { perror "GDB couldn't read file" }
timeout { perror "(timeout) read symbol file" ; return -1 }
}
send "target mips $targetname\n"
set timeout 60
verbose "Timeout is now $timeout seconds" 2
expect {
-re "Remote MIPS debugging.*$prompt $" {
if $verbose>1 then {
send_user "Set target to $targetname\n"
}
}
timeout {
perror "Couldn't set MIPS target."
set timeout 10
verbose "Timeout is now $timeout seconds" 2
return -1
}
}
send "load $arg\n"
if $verbose>1 then {
send_user "Loading $arg into $GDB\n"
}
set timeout 2400
verbose "Timeout is now $timeout seconds" 2
expect {
-re "Loading.*$prompt $" {
if $verbose>1 then {
send_user "Loaded $arg into $GDB\n"
}
set timeout 30
verbose "Timeout is now $timeout seconds" 2
}
-re "$prompt $" {
if $verbose>1 then {
perror "GDB couldn't load."
}
}
timeout {
if $verbose>1 then {
perror "Timed out trying to load $arg."
}
}
}
set timeout 10
verbose "Timeout is now $timeout seconds" 2
if [info exists expect_out(buffer)] then {
send_log $expect_out(buffer)
}
return 0
}
#
# gdb_start -- start GDB running.
#
proc gdb_start { } {
global GDB
global GDBFLAGS
global spawn_id
global shell_id
global prompt
global verbose
global targetname
global connectmode
global reboot
global baud
# reboot the board to get a clean start
if $reboot then {
if ![info exists connectmode] then {
set connectmode "kermit"
}
if ![info exists baud] then {
set baud 9600
}
set shell_id [ eval $connectmode "$targetname" ]
send -i $shell_id "\n"
expect {
-i $shell_id -re "<IDT>$" { }
timeout {
send -i $shell_id "\CC"
expect {
-i $shell_id -re "<IDT>$" { }
timeout {
perror "(timeout) board did not come up."; return -1
}
}
}
}
send -i $shell_id "go 0xbfc00000\n"
expect {
-i $shell_id -re "<IDT>$" { }
timeout { perror "(timeout) board did not come up."; return -1 }
}
verbose "about to exit kermit"
exit_remote_shell $shell_id
}
set GDB [which $GDB]
# start GDB
if [ llength $GDBFLAGS ] then {
spawn $GDB $GDBFLAGS
} else {
spawn $GDB
}
expect {
-re ".*\r\n$prompt $" {
verbose "GDB initialized."
}
-re "$prompt $" {
perror "GDB never initialized."
return -1
}
timeout {
perror "(timeout) GDB never initialized."
return -1
}
}
# force the height to "unlimited", so no pagers get used
send "set height 0\n"
expect -re ".*$prompt $" {}
# force the width to "unlimited", so no wraparound occurs
send "set width 0\n"
expect -re ".*$prompt $" {}
# Don't use floating point instructions, in case the board doesn't
# support them.
send "set mipsfpu off\n"
expect -re ".*$prompt $" {}
# if $verbose>1 then {
# send_user "Setting up target, please wait...\n"
# }
# send "target mips $targetname\n"
# set timeout 60
# verbose "Timeout is now $timeout seconds" 2
# expect {
# -re "Remote MIPS debugging.*$prompt $" {
# if $verbose>1 then {
# send_user "Set target to $targetname\n"
# }
# }
# timeout {
# perror "Couldn't set MIPS target."
# set timeout 10
# verbose "Timeout is now $timeout seconds" 2
# return -1
# }
# }
set timeout 10
verbose "Timeout is now $timeout seconds" 2
}
expect_after {
"<return>" { send "\n"; perror "Window too small." }
-re "\(y or n\) " { send "n\n"; perror "Got interactive prompt." }
full_buffer { perror "internal buffer is full." }
eof { perror "eof -- pty is hosed." }
timeout { perror "timeout." }
"virtual memory exhausted" { perror "virtual memory exhausted." }
"Undefined command" { perror "send string probably wrong." }
}
proc gdb_exit { } {
catch default_gdb_exit
}
gdb_start
# make sure gdb has actually started, otherwise if the first test
# timesout, DejaGnu crashes
send "\n"
expect {
-re "$prompt"
}
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