251 lines
6.8 KiB
Plaintext
251 lines
6.8 KiB
Plaintext
# Copyright 2000, 2002, 2003, 2004, 2005 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# This file is based on config/gdbserver.exp, which was written by
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# Michael Snyder (msnyder@redhat.com).
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#
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# To be addressed or set in your baseboard config file:
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#
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# set_board_info gdb_protocol "remote"
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# Unles you have a gdbserver that uses a different protocol...
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#
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# set_board_info gdb_server_prog
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# This will be the path to the gdbserver program you want to test.
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# Defaults to "gdbserver".
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#
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# set_board_info sockethost
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# The name of the host computer whose socket is being used.
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# Defaults to "localhost". Note: old gdbserver requires
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# that you define this, but libremote/gdbserver does not.
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#
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# set_board_info gdb,socketport
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# Port id to use for socket connection. If not set explicitly,
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# it will start at "2345" and increment for each use.
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#
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#
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# gdb_target_cmd
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# Send gdb the "target" command
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#
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proc gdb_target_cmd { targetname serialport } {
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global gdb_prompt
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for {set i 1} {$i <= 3} {incr i} {
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send_gdb "target $targetname $serialport\n"
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gdb_expect 60 {
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-re "A program is being debugged already.*ill it.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re "Couldn't establish connection to remote.*$gdb_prompt" {
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verbose "Connection failed"
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}
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-re "Remote MIPS debugging.*$gdb_prompt" {
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verbose "Set target to $targetname"
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return 0
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}
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-re "Remote debugging using .*$serialport.*$gdb_prompt" {
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verbose "Set target to $targetname"
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return 0
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}
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-re "Remote target $targetname connected to.*$gdb_prompt" {
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verbose "Set target to $targetname"
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return 0
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}
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-re "Connected to.*$gdb_prompt" {
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verbose "Set target to $targetname"
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return 0
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}
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-re "Ending remote.*$gdb_prompt" { }
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-re "Connection refused.*$gdb_prompt" {
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verbose "Connection refused by remote target. Pausing, and trying again."
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sleep 30
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continue
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}
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-re "Timeout reading from remote system.*$gdb_prompt" {
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verbose "Got timeout error from gdb."
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}
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timeout {
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send_gdb ""
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break
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}
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}
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}
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return 1
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}
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global portnum
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set portnum "2345"
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# Locate the gdbserver binary. Returns "" if gdbserver could not be found.
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proc find_gdbserver { } {
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global GDB
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if [target_info exists gdb_server_prog] {
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return [target_info gdb_server_prog]
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}
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set gdbserver "${GDB}server"
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if { [file isdirectory $gdbserver] } {
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append gdbserver "/gdbserver"
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}
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if { [file executable $gdbserver] } {
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return $gdbserver
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}
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return ""
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}
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# Return non-zero if we should skip gdbserver-specific tests.
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proc skip_gdbserver_tests { } {
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if { [find_gdbserver] == "" } {
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return 1
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}
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return 0
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}
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# Start a gdbserver process running SERVER_EXEC, and connect GDB
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# to it. CHILD_ARGS are passed to the inferior.
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#
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# Returns the target protocol and socket to connect to.
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proc gdbserver_spawn { server_exec child_args } {
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global portnum
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# Port id -- either specified in baseboard file, or managed here.
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if [target_info exists gdb,socketport] {
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set portnum [target_info gdb,socketport]
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} else {
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# Bump the port number to avoid conflicts with hung ports.
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incr portnum
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}
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# Extract the local and remote host ids from the target board struct.
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if [target_info exists sockethost] {
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set debughost [target_info sockethost]
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} else {
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set debughost "localhost:"
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}
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# Extract the protocol
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if [target_info exists gdb_protocol] {
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set protocol [target_info gdb_protocol]
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} else {
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set protocol "remote"
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}
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set gdbserver [find_gdbserver]
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# Export the host:port pair.
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set gdbport $debughost$portnum
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# Fire off the debug agent. This flavour of gdbserver takes as
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# arguments the port information, the name of the executable file to
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# be debugged, and any arguments.
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set gdbserver_command "$gdbserver :$portnum $server_exec"
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if { $child_args != "" } {
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append gdbserver_command " $child_args"
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}
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set server_spawn_id [remote_spawn target $gdbserver_command]
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# Wait for the server to produce at least one line and an additional
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# character of output. This will wait until any TCP socket has been
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# created, so that GDB can connect.
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expect {
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-i $server_spawn_id
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-notransfer
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-re ".*\n." { }
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}
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# We can't just call close, because if gdbserver is local then that means
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# that it will get a SIGHUP. Doing it this way could also allow us to
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# get at the inferior's input or output if necessary, and means that we
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# don't need to redirect output.
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expect_background {
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-i $server_spawn_id
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-re "." { }
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eof {
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# The spawn ID is already closed now (but not yet waited for).
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wait -i $expect_out(spawn_id)
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}
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}
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return [list $protocol $gdbport]
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}
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proc infer_host_exec { } {
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set host_exec ""
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send_gdb "info files\n"
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gdb_expect 30 {
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-re "Symbols from \"(\[^\"\]+)\"" {
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set host_exec $expect_out(1,string)
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exp_continue
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}
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-re "Local exec file:\[\r\n\]+\[ \t\]*`(\[^'\]+)'," {
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set host_exec $expect_out(1,string)
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exp_continue
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}
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-re "$gdb_prompt $" { }
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}
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return $host_exec
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}
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# Start a gdbserver process running HOST_EXEC and pass CHILD_ARGS
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# to it. Return 0 on success, or non-zero on failure.
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proc gdbserver_load { host_exec child_args } {
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global gdbserver_host_exec
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global gdbserver_server_exec
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# If we weren't passed an explicit binary, try to reuse the current
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# one. If we were, be sure to redownload it.
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if { $host_exec == "" && $gdbserver_host_exec == "" } {
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set gdbserver_host_exec [infer_host_exec]
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} elseif { $host_exec != "" } {
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set gdbserver_host_exec $host_exec
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if [info exists gdbserver_server_exec] { unset gdbserver_server_exec }
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}
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if { ! [info exists gdbserver_server_exec] } {
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if [is_remote target] {
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set gdbserver_server_exec [remote_download target $host_exec /tmp/[file tail $gdbserver_host_exec].[pid]]
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} else {
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set gdbserver_server_exec $gdbserver_host_exec
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}
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}
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set res [gdbserver_spawn $gdbserver_server_exec $child_args]
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set protocol [lindex $res 0]
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set gdbport [lindex $res 1]
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if { $host_exec != "" } {
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if [gdb_file_cmd $host_exec] {
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return -1
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}
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}
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gdb_target_cmd $protocol $gdbport
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}
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