[patch] Add native-gdbserver.exp board file to gdb source tree

[dje at google dot com (Doug Evans)]

Hi.

Per suggestion to add my stdio gdbserver board file to the gdb source tree,
http://sourceware.org/ml/gdb-patches/2011-12/msg00042.html
this patch adds the native gdbserver board file from the wiki.

I couldn't find a place I was comfortable with putting this file
so I created a new directory: testsuite/boards.
I didn't want to use testsuite/config because it doesn't really contain
"board files".  See, e.g., /usr/share/dejagnu/baseboards for a collection
of board files.

I will check this in in a few days (say Wednesday next week)
if there are no objections.

2011-12-02  Doug Evans  <dje@google.com>

	testsuite/
	* boards/native-gdbserver.exp: New file.

--- /dev/null	2011-11-17 12:50:30.979948001 -0800
+++ boards/native-gdbserver.exp	2011-12-02 10:12:15.000000000 -0800
@@ -0,0 +1,79 @@
+# Copyright 2011 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 a dejagnu "board file" and is used to run the testsuite
+# natively with gdbserver.
+#
+# To use this file:
+# bash$ touch ${my_dejagnu_dir}/my-dejagnu.exp
+# bash$ export DEJAGNU=${my_dejagnu_dir}/my-dejagnu.exp
+# bash$ mkdir ${my_dejagnu_dir}/boards
+# bash$ cp ${src_dir}/gdb/testsuite/boards/native-gdbserver.exp \
+#   ${my_dejagnu_dir}/boards
+# bash$ cd ${build_dir}/gdb
+# bash$ make check RUNTESTFLAGS="--target_board=native-gdbserver.exp"
+
+load_generic_config "gdbserver"
+process_multilib_options ""
+
+# The default compiler for this target.
+set_board_info compiler "[find_gcc]"
+
+# This gdbserver can only run a process once per session.
+set_board_info gdb,do_reload_on_run 1
+
+# There's no support for argument-passing (yet).
+set_board_info noargs 1
+
+# Can't do input (or output) in the current gdbserver.
+set_board_info gdb,noinferiorio 1
+
+# gdbserver does not intercept target file operations and perform them
+# on the host.
+set_board_info gdb,nofileio 1
+
+# Can't do hardware watchpoints, in general.
+set_board_info gdb,no_hardware_watchpoints 1
+
+set_board_info sockethost "localhost:"
+set_board_info use_gdb_stub 1
+
+# We will be using the standard GDB remote protocol.
+set_board_info gdb_protocol "remote"
+# Test the copy of gdbserver in the build directory.
+set_board_info gdb_server_prog "../gdbserver/gdbserver"
+
+proc ${board}_spawn { board cmd } {
+    global board_info
+
+    set baseboard [lindex [split $board "/"] 0]
+
+    set board_info($baseboard,isremote) 0
+    set result [remote_spawn $board $cmd]
+    set board_info($baseboard,isremote) 1
+
+    return $result
+}
+
+proc ${board}_download { board host dest } {
+    return $host
+}
+
+proc ${board}_file { dest op args } {
+    if { $op == "delete" } {
+	return 0
+    }
+    return [eval [list standard_file $dest $op] $args]
+}