389 lines
8.5 KiB
Plaintext
389 lines
8.5 KiB
Plaintext
# Copyright 1996, 1997 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 was written by Michael Snyder <msnyder@cygnus.com>.
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# GDB support routines for a board using the sparclet remote debugging
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# protocol.
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load_lib remote.exp
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load_lib gdb.exp
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#
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# Sparclet remote run command.
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#
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proc gdb_start { } {
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global gdb_prompt
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if ![file exists loader] {
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global libdir
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set loader loader;
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if [target_info exists gdb_stub_offset] {
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set result [target_compile "${libdir}/stub-loader.c" $loader executable "libs=-Wl,-Ttext,[target_info gdb_stub_offset]"];
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} else {
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set result [target_compile "${libdir}/stub-loader.c" $loader executable "ldscript=[target_info gdb_stub_ldscript]"];
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}
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}
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verbose -log "$gdb_prompt is gdb prompt"
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set result 0;
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for { set y 0; } { $y < 4 } { incr y } {
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if { [default_gdb_start] != 0 } {
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return -1;
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}
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if [target_info exists baud] {
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send_gdb "set remotebaud [target_info baud]\n"
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gdb_expect {
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-re "$gdb_prompt" { }
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default {
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perror "Error setting baud rate."
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return -1;
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}
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}
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}
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for {set x 1;} { $x < 4 } {incr x} {
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set result [gdb_sparclet_startup $result];
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if { $result > 0 } {
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return 1;
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}
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# mmmmm, magic numbers.
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if { $result == -42 || $result == -43 } {
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break;
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} else {
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reboot_target;
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}
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}
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if { $x == 4 } {
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return -1;
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}
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gdb_exit;
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sleep 5;
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}
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return -1;
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}
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proc gdb_sparclet_startup { arg } {
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global gdb_prompt
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global GDB
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global verbose
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set is_running_stub 0;
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if [target_info exists serial] {
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set serial [target_info serial];
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} else {
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set serial [target_info netport];
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}
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set protocol [target_info gdb_protocol];
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set check_stub 1;
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if { $arg != -42 } {
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send_gdb "target $protocol $serial\n";
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# 10 seconds may be a bit short.
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gdb_expect 10 {
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-re "already.*y or n." {
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gdb_send "y\n";
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exp_continue;
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}
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-re "Remote target.*connected to.*$gdb_prompt" { set check_stub 0; }
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-re "$gdb_prompt" { }
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timeout { }
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}
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if { $check_stub } {
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verbose "timed out, checking if stub is already running"
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send_gdb "\003";
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sleep 1;
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send_gdb "\003";
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gdb_expect 10 {
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-re "$gdb_prompt" { }
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default {
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remote_close host;
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return -42;
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}
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}
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}
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}
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if [target_info exists gdb_serial] {
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set gdb_serial [target_info gdb_serial];
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} else {
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set gdb_serial $serial;
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}
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if { $check_stub } {
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send_gdb "target remote $gdb_serial\n";
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gdb_expect 15 {
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-re "Remote debugging.*$gdb_prompt" {
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verbose "stub is already running"
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set is_running_stub 1;
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}
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default {
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warning "board isn't responding";
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remote_close host;
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remote_reboot target;
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return -43;
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}
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}
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}
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if { $is_running_stub == 0 } {
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global srcdir
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if [is_remote host] {
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set loader [remote_download host "loader"];
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} else {
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set loader "loader";
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}
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send_gdb "file $loader\n";
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gdb_expect {
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-re "A program is being debug.*Kill 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 "Load new symbol table.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re "Reading symbols from.*done..*$gdb_prompt $" {}
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-re "$gdb_prompt $" { perror "GDB couldn't find loader" }
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timeout {
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perror "(timeout) read symbol file" ;
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return -1
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}
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}
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send_gdb "target $protocol $serial\n";
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gdb_expect {
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-re "Remote target.*connected to.*$gdb_prompt" { }
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default {
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perror "Error reconnecting to board.";
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return -1;
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}
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}
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send_gdb "load $loader [target_info gdb_stub_offset]\n"
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verbose "Loading $loader into $GDB" 2
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set no_run_command 0;
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gdb_expect 1200 {
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-re "Loading.*$gdb_prompt $" {
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verbose "Loaded $loader into $GDB" 1
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}
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-re "Transfer rate:.*Switching to remote protocol.*Remote debugging" {
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set no_run_command 1;
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}
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-re "$gdb_prompt $" {
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if $verbose>1 then {
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perror "GDB couldn't load."
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}
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}
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timeout {
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if $verbose>1 then {
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perror "Timed out trying to load $arg."
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}
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}
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}
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if !$no_run_command {
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send_gdb "run\n";
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gdb_expect 60 {
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-re "A program is being debug.*Kill 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 "The program being debugged .*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re "Starting program:.*loader.*$" {
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verbose "Starting loader succeeded"
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}
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timeout {
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perror "(timeout) starting the loader" ;
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return -1
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}
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default {
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perror "error starting the loader";
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}
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}
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}
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sleep 2;
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send_gdb ""
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sleep 1;
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send_gdb ""
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verbose "Sent ^C^C"
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gdb_expect 10 {
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-re "Give up .and stop debugging it.*$" {
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send_gdb "y\n"
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exp_continue
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}
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-re "$gdb_prompt $" {
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verbose "Running loader succeeded"
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}
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timeout {
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warning "(timeout) interrupting the loader" ;
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remote_close host;
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}
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default {
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warning "error interrupting the loader";
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}
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}
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gdb_exit;
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return [gdb_start];
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}
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return 1;
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}
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proc gdb_run_cmd { args } {
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global gdb_prompt
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gdb_breakpoint exit;
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send_gdb "set \$fp=0\n";
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gdb_expect {
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-re "$gdb_prompt" { }
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}
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# This is needed for the SparcLite. Whee.
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if [target_info exists gdb,start_symbol] {
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set start_comm "jump *[target_info gdb,start_symbol]\n";
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} else {
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set start_comm "jump *start\n";
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}
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send_gdb "break copyloop\n";
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gdb_expect 10 {
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-re "Breakpoint.*$gdb_prompt $" {
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set start_comm "continue\n";
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}
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-re "$gdb_prompt $" { }
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timeout { warning "break copyloop failed badly"; }
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}
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send_gdb $start_comm;
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gdb_expect 10 {
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-re "y or n. $" {
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remote_send host "y\n"
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exp_continue;
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}
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-re "Breakpoint.*in copyloop.*$gdb_prompt $" {
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remote_send host "jump relocd\n";
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exp_continue;
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}
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-re "Continuing at.*\[\r\n\]" { }
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default {
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return -1;
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}
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}
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return "";
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}
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#
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# gdb_load -- load a file into the GDB.
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# Returns a 0 if there was an error,
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# 1 if it load successfully.
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#
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proc gdb_load { 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_prompt
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global GDB
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global expect_out
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set loadfile [file tail $arg]
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set loadpath [file dirname $arg]
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set protocol [target_info gdb_protocol];
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if [is_remote host] {
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set arg [remote_download host $arg];
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}
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send_gdb "file $arg\n"
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gdb_expect 30 {
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-re "A program is being debug.*Kill 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 "Load new symbol table.*y or n. $" {
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send_gdb "y\n"
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exp_continue
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}
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-re "Reading symbols from.*done..*$gdb_prompt $" {}
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-re "$gdb_prompt $" { perror "GDB couldn't read file" }
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timeout {
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perror "(timeout) read symbol file" ;
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return -1
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}
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}
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if [target_info exists gdb_serial] {
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set gdb_serial [target_info gdb_serial];
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} else {
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if [target_info exists serial] {
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set gdb_serial [target_info serial];
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} else {
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set gdb_serial [target_info netport];
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}
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}
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send_gdb "target remote $gdb_serial\n"
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gdb_expect 30 {
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-re "Kill it?.*y or n.*" {
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send_gdb "y\n";
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exp_continue
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}
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-re "$gdb_prompt $" {
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verbose "Set remote target to $gdb_serial" 2
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}
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timeout {
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perror "Couldn't set remote target."
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return -1
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}
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}
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if [target_info exists gdb_load_offset] {
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set offset "[target_info gdb_load_offset]";
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} else {
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set offset "";
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}
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send_gdb "load $arg $offset\n"
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verbose "Loading $arg into $GDB" 2
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gdb_expect 1200 {
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-re "Loading.*$gdb_prompt $" {
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verbose "Loaded $arg into $GDB" 1
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}
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-re "$gdb_prompt $" {
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if $verbose>1 then {
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perror "GDB couldn't load."
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}
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}
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timeout {
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if $verbose>1 then {
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perror "Timed out trying to load $arg."
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}
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}
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}
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send_gdb "list main\n";
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gdb_expect 60 {
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-re "$gdb_prompt" { }
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default {
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perror "command for list main never completed";
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return -1;
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}
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}
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return 0
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}
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