-# Copyright 2000-2016 Free Software Foundation, Inc.
+# Copyright 2000-2020 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
#
#
-# gdb_target_cmd
-# Send gdb the "target" command
+# gdb_target_cmd_ext
+# Send gdb the "target" command. Returns 0 on success, 1 on failure, 2 on
+# unsupported.
+# If specified, then ADDITIONAL_TEXT must match the text that comes after
+# the connection message in order for the procedure to succeed.
#
-proc gdb_target_cmd { targetname serialport } {
+proc gdb_target_cmd_ext { targetname serialport {additional_text ""} } {
global gdb_prompt
set serialport_re [string_to_regexp $serialport]
-re "Couldn't establish connection to remote.*$gdb_prompt $" {
verbose "Connection failed"
}
- -re "Remote MIPS debugging.*$gdb_prompt" {
+ -re "Remote MIPS debugging.*$additional_text.*$gdb_prompt" {
verbose "Set target to $targetname"
return 0
}
- -re "Remote debugging using .*$serialport_re.*$gdb_prompt $" {
+ -re "Remote debugging using .*$serialport_re.*$additional_text.*$gdb_prompt $" {
verbose "Set target to $targetname"
return 0
}
- -re "Remote debugging using stdio.*$gdb_prompt $" {
+ -re "Remote debugging using stdio.*$additional_text.*$gdb_prompt $" {
verbose "Set target to $targetname"
return 0
}
- -re "Remote target $targetname connected to.*$gdb_prompt $" {
+ -re "Remote target $targetname connected to.*$additional_text.*$gdb_prompt $" {
verbose "Set target to $targetname"
return 0
}
- -re "Connected to.*$gdb_prompt $" {
+ -re "Connected to.*$additional_text.*$gdb_prompt $" {
verbose "Set target to $targetname"
return 0
}
# Leave it there for the test to diagnose.
return 1
}
+ -re ": Network is unreachable.\r\n.*$gdb_prompt $" {
+ return 2
+ }
timeout {
send_gdb "\ 3"
break
return 1
}
+# Like gdb_target_cmd_ext, but returns 0 on success, 1 on failure.
+
+proc gdb_target_cmd { args } {
+ set res [eval gdb_target_cmd_ext $args]
+ return [expr $res == 0 ? 0 : 1]
+}
global portnum
set portnum "2345"
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
}
# Default routine to compute the "comm" argument for gdbserver.
proc gdbserver_default_get_comm_port { port } {
- return ":$port"
+ return "$port"
}
# Start a gdbserver process with initial OPTIONS and trailing ARGUMENTS.
proc gdbserver_start { options arguments } {
global portnum
+ global GDB_TEST_SOCKETHOST
# Port id -- either specified in baseboard file, or managed here.
if [target_info exists gdb,socketport] {
}
# Extract the local and remote host ids from the target board struct.
- if [target_info exists sockethost] {
+ if { [info exists GDB_TEST_SOCKETHOST] } {
+ # The user is not supposed to provide a port number, just a
+ # hostname/address, therefore we add the trailing ":" here.
+ set debughost "${GDB_TEST_SOCKETHOST}:"
+ # Escape open and close square brackets.
+ set debughost_tmp [string map { [ \\[ ] \\] } $debughost]
+ # We need a "gdbserver" version of the debughost, which will
+ # have the possible connection prefix stripped. This is
+ # because gdbserver currently doesn't recognize the prefixes.
+ regsub -all "^\(tcp:|udp:|tcp4:|udp4:|tcp6:|udp6:\)" $debughost_tmp "" debughost_gdbserver
+ } elseif [target_info exists sockethost] {
set debughost [target_info sockethost]
+ set debughost_gdbserver $debughost
} else {
set debughost "localhost:"
+ set debughost_gdbserver $debughost
}
# Some boards use a different value for the port that is passed to
# If gdbserver_reconnect will be called $gdbserver_reconnect_p must be
# set to true already during gdbserver_start.
global gdbserver_reconnect_p
+ global srcdir
+ global subdir
if {![info exists gdbserver_reconnect_p] || !$gdbserver_reconnect_p} {
# GDB client could accidentally connect to a stale server.
- # append gdbserver_command " --debug --once"
append gdbserver_command " --once"
}
+ # Enable debug if set.
+ if [gdbserver_debug_enabled] {
+ global gdbserverdebug
+ set enabled 0
+ foreach entry [split $gdbserverdebug ,] {
+ switch -- $entry {
+ "debug" {
+ append gdbserver_command " --debug"
+ set enabled 1
+ }
+ "remote" {
+ append gdbserver_command " --remote-debug"
+ set enabled 1
+ }
+ }
+ }
+ # Ensure debugfile is only added if something has been enabled
+ if { $enabled } {
+ set debugfile [standard_output_file gdbserver.debug]
+ append gdbserver_command " --debug-file=$debugfile"
+ }
+ }
+
if { $options != "" } {
append gdbserver_command " $options"
}
+ if { $debughost_gdbserver != "" } {
+ append gdbserver_command " $debughost_gdbserver"
+ }
if { $portnum != "" } {
- append gdbserver_command " [$get_comm_port $portnum]"
+ if { $debughost_gdbserver == "" } {
+ append gdbserver_command " "
+ }
+ append gdbserver_command "[$get_comm_port $portnum]"
}
if { $arguments != "" } {
append gdbserver_command " $arguments"
}
+ gdbserver_write_cmd_file $gdbserver_command
+
global server_spawn_id
set server_spawn_id [remote_spawn target $gdbserver_command]
-timeout 120
-notransfer
-re "Listening on" { }
- -re "Can't bind address: Address already in use\\.\r\n" {
+ -re "Can't (bind address|listen on socket): 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.
continue
}
}
+ -re ".*: cannot resolve name: .*\r\n" {
+ error "gdbserver cannot resolve name."
+ }
timeout {
error "Timeout waiting for gdbserver response."
}
unset server_spawn_id
}
-# Hook into GDB exit, and close GDBserver.
+# 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_gdb_exit] == "" } {
+if { [info procs gdbserver_orig_gdb_exit] == "" } {
rename gdb_exit gdbserver_orig_gdb_exit
+ rename mi_gdb_exit gdbserver_orig_mi_gdb_exit
}
-proc 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} {
- gdbserver_orig_gdb_exit
+ if { $is_mi } {
+ gdbserver_orig_mi_gdb_exit
+ } else {
+ gdbserver_orig_gdb_exit
+ }
return
}
# but DejaGNU doesn't know that, so gdb_spawn_id isn't unset.
# Catch the exceptions.
catch {
- send_gdb "monitor exit\n";
+ 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.
}
close_gdbserver
- gdbserver_orig_gdb_exit
+ 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
# Kill anything running before we try to start gdbserver, in case
# we are sharing a serial connection.
global gdb_prompt
- send_gdb "kill\n"
+ send_gdb "kill\n" optional
gdb_expect 120 {
-re "Kill the program being debugged. .y or n. $" {
send_gdb "y\n"
return [mi_gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
}
+
+# Check if debugging is enabled for gdbserver.
+
+proc gdbserver_debug_enabled { } {
+ global gdbserverdebug
+
+ # If not already read, get the debug setting from environment or board setting.
+ if ![info exists gdbserverdebug] {
+ global env
+ if [info exists env(GDBSERVER_DEBUG)] {
+ set gdbserverdebug $env(GDBSERVER_DEBUG)
+ } elseif [target_info exists gdbserver,debug] {
+ set gdbserverdebug [target_info gdbserver,debug]
+ } else {
+ return 0
+ }
+ }
+
+ # Expand the all option
+ if { $gdbserverdebug == "all" } {
+ set gdbserverdebug "debug,remote,replay"
+ }
+
+ # Ensure it is not empty.
+ return [expr { $gdbserverdebug != "" }]
+}
+
+# Write the command line used to invocate gdbserver to the cmd file.
+
+proc gdbserver_write_cmd_file { cmdline } {
+ set logfile [standard_output_file_with_gdb_instance gdbserver.cmd]
+ set cmd_file [open $logfile w]
+ puts $cmd_file $cmdline
+ catch "close $cmd_file"
+}
+
+# Override gdb_debug_init so that we can set replay logging in GDB if required.
+# Backup the original function so we can call it afterwards
+
+rename gdb_debug_init _gdb_debug_init
+
+proc gdb_debug_init { } {
+ global gdbserverdebug
+ global gdb_prompt
+
+ if [gdbserver_debug_enabled] {
+ foreach entry [split $gdbserverdebug ,] {
+ if { $entry == "replay" } {
+ set replayfile [standard_output_file_with_gdb_instance gdbserver.replay]
+ send_gdb "set remotelogfile $replayfile\n" optional
+ gdb_expect 10 {
+ -re "$gdb_prompt $" {}
+ }
+ }
+ }
+ }
+
+ # Now call the standard debug init function
+ _gdb_debug_init
+}