61baf725ec
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
540 lines
15 KiB
Plaintext
540 lines
15 KiB
Plaintext
# Copyright 2000-2017 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/>.
|
||
|
||
# This file is based on config/gdbserver.exp, which was written by
|
||
# Michael Snyder (msnyder@redhat.com).
|
||
|
||
#
|
||
# To be addressed or set in your baseboard config file:
|
||
#
|
||
# set_board_info gdb_protocol "remote"
|
||
# Unles you have a gdbserver that uses a different protocol...
|
||
# After GDB starts you should check global $gdbserver_protocol instead as
|
||
# the testfile may force a specific different target protocol itself.
|
||
#
|
||
# set_board_info gdb_server_prog
|
||
# This will be the path to the gdbserver program you want to test.
|
||
# Defaults to "gdbserver".
|
||
#
|
||
# set_board_info sockethost
|
||
# The name of the host computer whose socket is being used.
|
||
# Defaults to "localhost". Note: old gdbserver requires
|
||
# that you define this, but libremote/gdbserver does not.
|
||
#
|
||
# set_board_info gdb,socketport
|
||
# Port id to use for socket connection. If not set explicitly,
|
||
# it will start at "2345" and increment for each use.
|
||
# After GDB starts you should check global $gdbserver_gdbport for the
|
||
# real port used. It is not useful if $gdbserver_reconnect_p was not set.
|
||
#
|
||
|
||
#
|
||
# gdb_target_cmd
|
||
# Send gdb the "target" command
|
||
#
|
||
proc gdb_target_cmd { targetname serialport } {
|
||
global gdb_prompt
|
||
|
||
set serialport_re [string_to_regexp $serialport]
|
||
for {set i 1} {$i <= 3} {incr i} {
|
||
send_gdb "target $targetname $serialport\n"
|
||
gdb_expect 60 {
|
||
-re "A program is being debugged already.*ill it.*y or n. $" {
|
||
send_gdb "y\n"
|
||
exp_continue
|
||
}
|
||
-re "unknown host.*$gdb_prompt" {
|
||
verbose "Couldn't look up $serialport"
|
||
}
|
||
-re "Couldn't establish connection to remote.*$gdb_prompt $" {
|
||
verbose "Connection failed"
|
||
}
|
||
-re "Remote MIPS debugging.*$gdb_prompt" {
|
||
verbose "Set target to $targetname"
|
||
return 0
|
||
}
|
||
-re "Remote debugging using .*$serialport_re.*$gdb_prompt $" {
|
||
verbose "Set target to $targetname"
|
||
return 0
|
||
}
|
||
-re "Remote debugging using stdio.*$gdb_prompt $" {
|
||
verbose "Set target to $targetname"
|
||
return 0
|
||
}
|
||
-re "Remote target $targetname connected to.*$gdb_prompt $" {
|
||
verbose "Set target to $targetname"
|
||
return 0
|
||
}
|
||
-re "Connected to.*$gdb_prompt $" {
|
||
verbose "Set target to $targetname"
|
||
return 0
|
||
}
|
||
-re "Ending remote.*$gdb_prompt $" { }
|
||
-re "Connection refused.*$gdb_prompt $" {
|
||
verbose "Connection refused by remote target. Pausing, and trying again."
|
||
sleep 30
|
||
continue
|
||
}
|
||
-re "Timeout reading from remote system.*$gdb_prompt $" {
|
||
verbose "Got timeout error from gdb."
|
||
}
|
||
-notransfer -re "Remote debugging using .*\r\n> $" {
|
||
# We got an unexpected prompt while creating the target.
|
||
# Leave it there for the test to diagnose.
|
||
return 1
|
||
}
|
||
timeout {
|
||
send_gdb ""
|
||
break
|
||
}
|
||
}
|
||
}
|
||
return 1
|
||
}
|
||
|
||
|
||
global portnum
|
||
set portnum "2345"
|
||
|
||
# Locate the gdbserver binary. Returns "" if gdbserver could not be found.
|
||
|
||
proc find_gdbserver { } {
|
||
global GDB
|
||
global GDBSERVER
|
||
|
||
if [info exists GDBSERVER] {
|
||
return ${GDBSERVER}
|
||
}
|
||
|
||
if [target_info exists gdb_server_prog] {
|
||
return [target_info gdb_server_prog]
|
||
}
|
||
|
||
set gdbserver "${GDB}server"
|
||
if { [file isdirectory $gdbserver] } {
|
||
append gdbserver "/gdbserver"
|
||
}
|
||
|
||
if { [file executable $gdbserver] } {
|
||
return $gdbserver
|
||
}
|
||
|
||
return ""
|
||
}
|
||
|
||
# Return non-zero if we should skip gdbserver-specific tests.
|
||
|
||
proc skip_gdbserver_tests { } {
|
||
if { [find_gdbserver] == "" } {
|
||
return 1
|
||
}
|
||
|
||
# If GDB is lack of XML support, and targets, like arm, have
|
||
# multiple target descriptions, GDB doesn't know which target
|
||
# description GDBserver uses, and may fail to parse 'g' packet
|
||
# after connection.
|
||
if { [gdb_skip_xml_test]
|
||
&& ([istarget "arm*-*-linux*"]
|
||
|| [istarget "mips*-*-linux*"]
|
||
|| [istarget "powerpc*-*-linux*"]
|
||
|| [istarget "s390*-*-linux*"]
|
||
|| [istarget "x86_64-*-linux*"]
|
||
|| [istarget "i\[34567\]86-*-linux*"]) } {
|
||
return 1
|
||
}
|
||
|
||
return 0
|
||
}
|
||
|
||
# Download the currently loaded program to the target if necessary.
|
||
# Return the target system filename.
|
||
# NOTE: This was named "gdbserver_download", but that collides with the
|
||
# dejagnu "download" API function when using load_generic_config "gdbserver".
|
||
|
||
proc gdbserver_download_current_prog { } {
|
||
global gdbserver_host_exec
|
||
global gdbserver_host_mtime
|
||
global gdbserver_server_exec
|
||
global last_loaded_file
|
||
|
||
if { ![info exists last_loaded_file] } {
|
||
return ""
|
||
}
|
||
|
||
set host_exec $last_loaded_file
|
||
|
||
# If we already downloaded a file to the target, see if we can reuse it.
|
||
set reuse 0
|
||
if { [info exists gdbserver_server_exec] } {
|
||
set reuse 1
|
||
|
||
# If the file has changed, we can not.
|
||
if { $host_exec != $gdbserver_host_exec } {
|
||
set reuse 0
|
||
}
|
||
|
||
# If the mtime has changed, we can not.
|
||
if { [file mtime $host_exec] != $gdbserver_host_mtime } {
|
||
set reuse 0
|
||
}
|
||
}
|
||
|
||
if { $reuse == 0 } {
|
||
set gdbserver_host_exec $host_exec
|
||
set gdbserver_host_mtime [file mtime $host_exec]
|
||
set gdbserver_server_exec [gdb_remote_download target $host_exec]
|
||
}
|
||
|
||
return $gdbserver_server_exec
|
||
}
|
||
|
||
# Default routine to compute the argument to "target remote".
|
||
|
||
proc gdbserver_default_get_remote_address { host port } {
|
||
# Historically HOST included the trailing ":".
|
||
# To avoid breaking any board files out there we leave things alone.
|
||
return "$host$port"
|
||
}
|
||
|
||
# Default routine to compute the "comm" argument for gdbserver.
|
||
|
||
proc gdbserver_default_get_comm_port { port } {
|
||
return ":$port"
|
||
}
|
||
|
||
# Start a gdbserver process with initial OPTIONS and trailing ARGUMENTS.
|
||
# The port will be filled in between them automatically.
|
||
#
|
||
# Returns the target protocol and socket to connect to.
|
||
|
||
proc gdbserver_start { options arguments } {
|
||
global portnum
|
||
|
||
# Port id -- either specified in baseboard file, or managed here.
|
||
if [target_info exists gdb,socketport] {
|
||
set portnum [target_info gdb,socketport]
|
||
} else {
|
||
# Bump the port number to avoid conflicts with hung ports.
|
||
incr portnum
|
||
}
|
||
|
||
# Extract the local and remote host ids from the target board struct.
|
||
if [target_info exists sockethost] {
|
||
set debughost [target_info sockethost]
|
||
} else {
|
||
set debughost "localhost:"
|
||
}
|
||
|
||
# Some boards use a different value for the port that is passed to
|
||
# gdbserver and the port that is passed to the "target remote" command.
|
||
# One example is the stdio gdbserver support.
|
||
if [target_info exists gdb,get_remote_address] {
|
||
set get_remote_address [target_info gdb,get_remote_address]
|
||
} else {
|
||
set get_remote_address gdbserver_default_get_remote_address
|
||
}
|
||
if [target_info exists gdbserver,get_comm_port] {
|
||
set get_comm_port [target_info gdbserver,get_comm_port]
|
||
} else {
|
||
set get_comm_port gdbserver_default_get_comm_port
|
||
}
|
||
|
||
# Extract the protocol
|
||
if [target_info exists gdb_protocol] {
|
||
set protocol [target_info gdb_protocol]
|
||
} else {
|
||
set protocol "remote"
|
||
}
|
||
|
||
set gdbserver [find_gdbserver]
|
||
|
||
# Loop till we find a free port.
|
||
while 1 {
|
||
# Fire off the debug agent.
|
||
set gdbserver_command "$gdbserver"
|
||
|
||
# If gdbserver_reconnect will be called $gdbserver_reconnect_p must be
|
||
# set to true already during gdbserver_start.
|
||
global gdbserver_reconnect_p
|
||
if {![info exists gdbserver_reconnect_p] || !$gdbserver_reconnect_p} {
|
||
# GDB client could accidentally connect to a stale server.
|
||
# append gdbserver_command " --debug --once"
|
||
append gdbserver_command " --once"
|
||
}
|
||
|
||
if { $options != "" } {
|
||
append gdbserver_command " $options"
|
||
}
|
||
if { $portnum != "" } {
|
||
append gdbserver_command " [$get_comm_port $portnum]"
|
||
}
|
||
if { $arguments != "" } {
|
||
append gdbserver_command " $arguments"
|
||
}
|
||
|
||
global server_spawn_id
|
||
set server_spawn_id [remote_spawn target $gdbserver_command]
|
||
|
||
# GDBserver doesn't do inferior I/O through GDB. But we can
|
||
# talk to the program using GDBserver's tty instead.
|
||
global inferior_spawn_id
|
||
set inferior_spawn_id $server_spawn_id
|
||
|
||
# Wait for the server to open its TCP socket, so that GDB can connect.
|
||
expect {
|
||
-i $server_spawn_id
|
||
-timeout 120
|
||
-notransfer
|
||
-re "Listening on" { }
|
||
-re "Can't bind address: Address already in use\\.\r\n" {
|
||
verbose -log "Port $portnum is already in use."
|
||
if ![target_info exists gdb,socketport] {
|
||
# Bump the port number to avoid the conflict.
|
||
wait -i $expect_out(spawn_id)
|
||
incr portnum
|
||
continue
|
||
}
|
||
}
|
||
timeout {
|
||
error "Timeout waiting for gdbserver response."
|
||
}
|
||
}
|
||
break
|
||
}
|
||
|
||
return [list $protocol [$get_remote_address $debughost $portnum]]
|
||
}
|
||
|
||
# Start a gdbserver process running SERVER_EXEC, and connect GDB
|
||
# to it. CHILD_ARGS are passed to the inferior.
|
||
#
|
||
# Returns the target protocol and socket to connect to.
|
||
|
||
proc gdbserver_spawn { child_args } {
|
||
set target_exec [gdbserver_download_current_prog]
|
||
|
||
# Fire off the debug agent. This flavour of gdbserver takes as
|
||
# arguments the port information, the name of the executable file to
|
||
# be debugged, and any arguments.
|
||
set arguments "$target_exec"
|
||
if { $child_args != "" } {
|
||
append arguments " $child_args"
|
||
}
|
||
return [gdbserver_start "" $arguments]
|
||
}
|
||
|
||
# Close the GDBserver connection.
|
||
|
||
proc close_gdbserver {} {
|
||
global server_spawn_id
|
||
|
||
# We can't just call close, because if gdbserver is local then that means
|
||
# that it will get a SIGHUP. Doing it this way could also allow us to
|
||
# get at the inferior's input or output if necessary, and means that we
|
||
# don't need to redirect output.
|
||
|
||
if {![info exists server_spawn_id]} {
|
||
return
|
||
}
|
||
|
||
verbose "Quitting GDBserver"
|
||
|
||
catch "close -i $server_spawn_id"
|
||
catch "wait -i $server_spawn_id"
|
||
unset server_spawn_id
|
||
}
|
||
|
||
# Hook into GDB exit, and close GDBserver. We must load this
|
||
# explicitly here, and rename the procedures we want to override.
|
||
load_lib mi-support.exp
|
||
|
||
if { [info procs gdbserver_orig_gdb_exit] == "" } {
|
||
rename gdb_exit gdbserver_orig_gdb_exit
|
||
rename mi_gdb_exit gdbserver_orig_mi_gdb_exit
|
||
}
|
||
|
||
proc gdbserver_gdb_exit { is_mi } {
|
||
global gdb_spawn_id server_spawn_id
|
||
global gdb_prompt
|
||
global gdbserver_reconnect_p
|
||
|
||
# Leave GDBserver running if we're exiting GDB in order to
|
||
# reconnect to the same instance of GDBserver again.
|
||
if {[info exists gdbserver_reconnect_p] && $gdbserver_reconnect_p} {
|
||
if { $is_mi } {
|
||
gdbserver_orig_mi_gdb_exit
|
||
} else {
|
||
gdbserver_orig_gdb_exit
|
||
}
|
||
return
|
||
}
|
||
|
||
if {[info exists gdb_spawn_id] && [info exists server_spawn_id]} {
|
||
# GDB may be terminated in an expected way or an unexpected way,
|
||
# but DejaGNU doesn't know that, so gdb_spawn_id isn't unset.
|
||
# Catch the exceptions.
|
||
catch {
|
||
if { $is_mi } {
|
||
set monitor_exit "-interpreter-exec console \"monitor exit\""
|
||
} else {
|
||
set monitor_exit "monitor exit"
|
||
}
|
||
send_gdb "$monitor_exit\n";
|
||
# We use expect rather than gdb_expect because
|
||
# we want to suppress printing exception messages, otherwise,
|
||
# remote_expect, invoked by gdb_expect, prints the exceptions.
|
||
expect {
|
||
-i "$gdb_spawn_id" -re "$gdb_prompt $" {
|
||
exp_continue
|
||
}
|
||
-i "$server_spawn_id" eof {
|
||
wait -i $expect_out(spawn_id)
|
||
unset server_spawn_id
|
||
}
|
||
}
|
||
}
|
||
}
|
||
close_gdbserver
|
||
|
||
if { $is_mi } {
|
||
gdbserver_orig_mi_gdb_exit
|
||
} else {
|
||
gdbserver_orig_gdb_exit
|
||
}
|
||
}
|
||
|
||
proc gdb_exit {} {
|
||
gdbserver_gdb_exit 0
|
||
}
|
||
|
||
proc mi_gdb_exit {} {
|
||
gdbserver_gdb_exit 1
|
||
}
|
||
|
||
# Start a gdbserver process running HOST_EXEC and pass CHILD_ARGS
|
||
# to it. Return 0 on success, or non-zero on failure: 2 if gdbserver
|
||
# failed to start or 1 if we couldn't connect to it.
|
||
|
||
proc gdbserver_run { child_args } {
|
||
global gdbserver_protocol
|
||
global gdbserver_gdbport
|
||
|
||
# Kill anything running before we try to start gdbserver, in case
|
||
# we are sharing a serial connection.
|
||
global gdb_prompt
|
||
send_gdb "kill\n"
|
||
gdb_expect 120 {
|
||
-re "Kill the program being debugged. .y or n. $" {
|
||
send_gdb "y\n"
|
||
verbose "\t\tKilling previous program being debugged"
|
||
exp_continue
|
||
}
|
||
-re "$gdb_prompt $" {
|
||
# OK.
|
||
}
|
||
}
|
||
|
||
if { [catch { gdbserver_spawn $child_args } res] == 1 } {
|
||
perror $res
|
||
return 2
|
||
}
|
||
set gdbserver_protocol [lindex $res 0]
|
||
set gdbserver_gdbport [lindex $res 1]
|
||
|
||
return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
|
||
}
|
||
|
||
# Reconnect to the previous gdbserver session.
|
||
|
||
proc gdbserver_reconnect { } {
|
||
global gdbserver_protocol
|
||
global gdbserver_gdbport
|
||
|
||
global gdbserver_reconnect_p
|
||
if {![info exists gdbserver_reconnect_p] || !$gdbserver_reconnect_p} {
|
||
error "gdbserver_reconnect_p is not set before gdbserver_reconnect"
|
||
return 0
|
||
}
|
||
|
||
return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
|
||
}
|
||
|
||
# Start gdbserver in extended mode with OPTIONS and connect to it. Note
|
||
# this frobs $gdbserver_protocol, so should be used only from a board
|
||
# that usually connects in target remote mode.
|
||
proc gdbserver_start_extended { {options ""} } {
|
||
global gdbserver_protocol
|
||
global gdbserver_gdbport
|
||
global use_gdb_stub
|
||
|
||
set gdbserver_options "--multi"
|
||
|
||
if { $options != "" } {
|
||
append gdbserver_options " $options"
|
||
}
|
||
|
||
if { [catch { gdbserver_start $gdbserver_options "" } res] == 1 } {
|
||
perror $res
|
||
return 2
|
||
}
|
||
set gdbserver_protocol [lindex $res 0]
|
||
if { [string first "extended-" $gdbserver_protocol] != 0} {
|
||
set gdbserver_protocol "extended-$gdbserver_protocol"
|
||
}
|
||
set gdbserver_gdbport [lindex $res 1]
|
||
|
||
# Even if the board file is testing with target remote, our caller
|
||
# wants to test against gdbserver in extended-remote mode. Make sure to
|
||
# disable stub-like techniques.
|
||
set use_gdb_stub 0
|
||
|
||
return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
|
||
}
|
||
|
||
# Start and connect to a gdbserver in extended/multi mode. Unlike
|
||
# gdbserver_start_extended, this does not frob $gdbserver_protocol.
|
||
|
||
proc gdbserver_start_multi { } {
|
||
global gdbserver_protocol
|
||
global gdbserver_gdbport
|
||
|
||
if { [catch { gdbserver_start "--multi" "" } res] == 1 } {
|
||
perror $res
|
||
return 2
|
||
}
|
||
set gdbserver_protocol [lindex $res 0]
|
||
set gdbserver_gdbport [lindex $res 1]
|
||
|
||
return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
|
||
}
|
||
|
||
# Start a gdbserver process in multi/extended mode, and have GDB
|
||
# connect to it (MI version). Return 0 on success, or non-zero on
|
||
# failure.
|
||
|
||
proc mi_gdbserver_start_multi { } {
|
||
global gdbserver_protocol
|
||
global gdbserver_gdbport
|
||
|
||
if { [catch { gdbserver_start "--multi" "" } res] == 1 } {
|
||
perror $res
|
||
return 2
|
||
}
|
||
set gdbserver_protocol [lindex $res 0]
|
||
set gdbserver_gdbport [lindex $res 1]
|
||
|
||
return [mi_gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
|
||
}
|