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# Test Framework Driver for GDB driving an external simulator
# Copyright 1999-2020 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 3 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, see <http://www.gnu.org/licenses/>.
proc sid_start {} {
set port [lindex [split [target_info netport] ":"] 1]
# Set a default endianness
case [target_info multilib_flags] in {
{ *big-endian* *-EB* *-meb* } { set sidendian "-EB" }
{ *little-endian* *-EL* *-mel* } { set sidendian "-EL" }
default {
if {[target_info exists sim,defaultendian]} then {
set sidendian [target_info sim,defaultendian]
} else {
# rely on endianness settings in sid configuration defaults
set sidendian ""
}
}
}
case $sidendian in {
{ -EB } { set sidendian2 {-e "set cpu endian big"} }
{ -EL } { set sidendian2 {-e "set cpu endian little"} }
default { set sidendian2 {} }
}
# test to see whether to use use sid in build or install tree
set use_build_tree [file exists ../../sid]
if {$use_build_tree} then {
set pre_spawn {
global env
set env(SID_LIBRARY_PATH) [join [glob "../../sid/component/*"] ":"]
set env(SID) "../../sid/main/dynamic/sid"
if {! [file exists $env(SID)]} then { error "Cannot find sid in build tree" }
}
if { [board_info target sim,protocol] == "sid" } {
set spawncmd "[target_info sim] [target_info sim,options] $sidendian2 -e \"set cpu-gdb-socket sockaddr-local 0.0.0.0:$port\""
} elseif { [board_info target sim,protocol] == "rawsid" } {
set spawncmd "[target_info sim] [target_info sim,options] -$sidendian --gdb=$port"
} else {
set spawncmd "../../sid/bsp/[target_info sim] $sidendian --gdb=$port [target_info sim,options]"
}
set post_spawn {
global env
unset env(SID_LIBRARY_PATH)
unset env(SID)
}
} else {
set pre_spawn {}
if { [board_info target sim,protocol] == "sid" } {
# FIXME: sim,options may be from the build tree, should find
# it in the install tree.
set spawncmd "sid [target_info sim,options] $sidendian2 -e \"set cpu-gdb-socket sockaddr-local 0.0.0.0:$port\""
} elseif { [board_info target sim,protocol] == "rawsid" } {
set spawncmd "[target_info sim] [target_info sim,options] -$sidendian --gdb=$port"
} else {
set spawncmd "[target_info sim] $sidendian --gdb=$port [target_info sim,options]"
}
set post_spawn {}
}
eval $pre_spawn
if {[catch [list remote_spawn host $spawncmd] msg]} {
perror $msg
exit 1
}
eval $post_spawn
# Don't do the following any more; it breaks with "runtest ... < /dev/null"
# expect_background {
# -re \[^\n\]*\n {
# regsub "\n" $expect_out(buffer) {} msg
# verbose "SID: $msg" 2
# }
# }
# There should be no need to sleep to give SID time to start;
# GDB would wait for a fair while for the stub to respond.
sleep 4
if ![target_info exists gdb,no_push_conn] {
remote_push_conn host
}
}
#
# Handle GDB talking to SID
#
proc gdb_start {} {
sid_start
return [default_gdb_start]
}
proc sid_exit {} {
if ![target_info exists gdb,no_push_conn] {
remote_close host
remote_pop_conn host
}
}
proc gdb_exit {} {
set result [default_gdb_exit]
sid_exit
return $result
}
#
# gdb_target_sid
# Set gdb to target the simulator
#
proc send_target_sid { } {
# wait a little while, giving sid time to shut down & restart its
# gdb socket
sleep 4
send_gdb "target [target_info gdb_protocol] [target_info netport]\n"
}
proc gdb_target_sid { } {
global gdb_prompt
global exit_status
send_target_sid
global timeout
set prev_timeout $timeout
set timeout 60
verbose "Timeout is now $timeout seconds" 2
gdb_expect {
-re ".*\[Ee\]rror.*$gdb_prompt $" {
perror "Couldn't set target for remote simulator."
gdb_exit
}
-re "Remote debugging using.*$gdb_prompt" {
verbose "Set target to sid"
}
timeout {
perror "Couldn't set target for remote simulator."
gdb_exit
}
}
set timeout $prev_timeout
verbose "Timeout is now $timeout seconds" 2
}
#
# gdb_load -- load a file into the debugger.
# return a -1 if anything goes wrong.
#
proc gdb_load { arg } {
global verbose
global loadpath
global loadfile
global GDB
global gdb_prompt
global retval
if { $arg != "" } {
if [gdb_file_cmd $arg] then { return -1 }
}
gdb_target_sid
send_gdb "load\n"
global timeout
set prev_timeout $timeout
set timeout 2400
verbose "Timeout is now $timeout seconds" 2
gdb_expect {
-re ".*\[Ee\]rror.*$gdb_prompt $" {
if $verbose>1 then {
perror "Error during download."
}
set retval -1
}
-re ".*$gdb_prompt $" {
if $verbose>1 then {
send_user "Loaded $arg into $GDB\n"
}
set retval 0
}
-re "$gdb_prompt $" {
if $verbose>1 then {
perror "GDB couldn't load."
}
set retval -1
}
timeout {
if $verbose>1 then {
perror "Timed out trying to load $arg."
}
set retval -1
}
}
set timeout $prev_timeout
verbose "Timeout is now $timeout seconds" 2
return $retval
}
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