-# Copyright 2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright 2000-2013 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 2 of the License, or
+# 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, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# 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).
#
# 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.
# 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.
#
#
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 $serialport\n"
gdb_expect 60 {
send_gdb "y\n"
exp_continue
}
- -re "Couldn't establish connection to remote.*$gdb_prompt" {
+ -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.*$gdb_prompt" {
+ -re "Remote debugging using .*$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" {
+ -re "Remote target $targetname connected to.*$gdb_prompt $" {
verbose "Set target to $targetname"
return 0
}
- -re "Connected to.*$gdb_prompt" {
+ -re "Connected to.*$gdb_prompt $" {
verbose "Set target to $targetname"
return 0
}
- -re "Ending remote.*$gdb_prompt" { }
- -re "Connection refused.*$gdb_prompt" {
+ -re "Ending remote.*$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" {
+ -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 "\ 3"
break
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]
return 0
}
-# Start a gdbserver process running SERVER_EXEC, and connect GDB
-# to it. CHILD_ARGS are passed to the inferior.
+# 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
+
+ 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]
+ if [is_remote target] {
+ set gdbserver_server_exec [gdb_download $host_exec]
+ } else {
+ set gdbserver_server_exec $host_exec
+ }
+ }
+
+ return $gdbserver_server_exec
+}
+
+# Default routine to compute the argument to "target remote".
+
+proc gdbserver_default_get_remote_address { host port } {
+ return "$host$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_spawn { server_exec child_args } {
+proc gdbserver_start { options arguments } {
global portnum
# Port id -- either specified in baseboard file, or managed here.
# Extract the local and remote host ids from the target board struct.
if [target_info exists sockethost] {
- set debughost [target_info 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
+ }
+
# Extract the protocol
if [target_info exists gdb_protocol] {
set protocol [target_info gdb_protocol]
set gdbserver [find_gdbserver]
- # Export the host:port pair.
- set gdbport $debughost$portnum
-
- # 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 gdbserver_command "$gdbserver :$portnum $server_exec"
- if { $child_args != "" } {
- append gdbserver_command " $child_args"
- }
+ # Loop till we find a free port.
+ while 1 {
+ # Fire off the debug agent.
+ set gdbserver_command "$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"
+ }
- set server_spawn_id [remote_spawn target $gdbserver_command]
+ if { $options != "" } {
+ append gdbserver_command " $options"
+ }
+ if { $portnum != "" } {
+ append gdbserver_command " :$portnum"
+ }
+ if { $arguments != "" } {
+ append gdbserver_command " $arguments"
+ }
- # Wait for the server to produce at least one line and an additional
- # character of output. This will wait until any TCP socket has been
- # created, so that GDB can connect.
- expect {
- -i $server_spawn_id
- -notransfer
- -re ".*\n." { }
+ set server_spawn_id [remote_spawn target $gdbserver_command]
+
+ # Wait for the server to open its TCP socket, so that GDB can connect.
+ expect {
+ -i $server_spawn_id
+ -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
+ }
+ }
+ }
+ break
}
# We can't just call close, because if gdbserver is local then that means
# don't need to redirect output.
expect_background {
-i $server_spawn_id
- -re "." { }
+ full_buffer { }
eof {
# The spawn ID is already closed now (but not yet waited for).
wait -i $expect_out(spawn_id)
}
}
- return [list $protocol $gdbport]
+ return [list $protocol [$get_remote_address $debughost $portnum]]
}
-proc infer_host_exec { } {
- set host_exec ""
+# 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]
- send_gdb "info files\n"
- gdb_expect 30 {
- -re "Symbols from \"(\[^\"\]+)\"" {
- set host_exec $expect_out(1,string)
+ # Fire off the debug agent. This flavour of gdbserver takes as
+ # arguments the port information, the name of the executable file to
+ # be debugged, and any arguments.
+ set arguments "$target_exec"
+ if { $child_args != "" } {
+ append arguments " $child_args"
+ }
+ return [gdbserver_start "" $arguments]
+}
+
+# Start a gdbserver process running HOST_EXEC and pass CHILD_ARGS
+# to it. Return 0 on success, or non-zero on failure.
+
+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 "Local exec file:\[\r\n\]+\[ \t\]*`(\[^'\]+)'," {
- set host_exec $expect_out(1,string)
- exp_continue
+ -re "$gdb_prompt $" {
+ # OK.
}
- -re "$gdb_prompt $" { }
}
- return $host_exec
-}
+ set res [gdbserver_spawn $child_args]
+ set gdbserver_protocol [lindex $res 0]
+ set gdbserver_gdbport [lindex $res 1]
-# Start a gdbserver process running HOST_EXEC and pass CHILD_ARGS
-# to it. Return 0 on success, or non-zero on failure.
+ return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
+}
-proc gdbserver_load { host_exec child_args } {
- global gdbserver_host_exec
- global gdbserver_server_exec
+# Reconnect to the previous gdbserver session.
- # If we weren't passed an explicit binary, try to reuse the current
- # one. If we were, be sure to redownload it.
+proc gdbserver_reconnect { } {
+ global gdbserver_protocol
+ global gdbserver_gdbport
- if { $host_exec == "" && $gdbserver_host_exec == "" } {
- set gdbserver_host_exec [infer_host_exec]
- } elseif { $host_exec != "" } {
- set gdbserver_host_exec $host_exec
- if [info exists gdbserver_server_exec] { unset gdbserver_server_exec }
+ global gdbserver_reconnect_p;
+ if {![info exists gdbserver_reconnect_p] || !$gdbserver_reconnect_p} {
+ error "gdbserver_reconnect_p is not set before gdbserver_reconnect"
+ return 0
}
- if { ! [info exists gdbserver_server_exec] } {
- if [is_remote target] {
- set gdbserver_server_exec [remote_download target $host_exec /tmp/[file tail $gdbserver_host_exec].[pid]]
- } else {
- set gdbserver_server_exec $gdbserver_host_exec
- }
+ return [gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
+}
+
+# Start and connect to a gdbserver in extended mode. Note this frobs
+# $gdbserver_protocol, so should be used only from a board that
+# usually connects in target remote mode.
+proc gdbserver_start_extended { } {
+ global gdbserver_protocol
+ global gdbserver_gdbport
+ global use_gdb_stub
+
+ set res [gdbserver_start "--multi" ""]
+ 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]
- set res [gdbserver_spawn $gdbserver_server_exec $child_args]
- set protocol [lindex $res 0]
- set 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
- if { $host_exec != "" } {
- if [gdb_file_cmd $host_exec] {
- return -1
- }
- }
- gdb_target_cmd $protocol $gdbport
+ 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
+
+ set res [gdbserver_start "--multi" ""]
+ 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
+
+ set res [gdbserver_start "--multi" ""]
+ set gdbserver_protocol [lindex $res 0]
+ set gdbserver_gdbport [lindex $res 1]
+
+ return [mi_gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport]
}
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