[pushed] Fix is_remote check in gdb.base/remote.exp

[Pedro Alves <palves at redhat dot com>]

1. Otherwise, when the native-gdbserver board stops setting is_remote,
   this test would stop running there.

2. Makes the test run with --target_board=native-extended-gdbserver
   too.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>

	* gdb.base/remote.exp: Check gdb_protocol instead of is_remote.
	(top level): Add comment.
---
 gdb/testsuite/ChangeLog           |  5 +++++
 gdb/testsuite/gdb.base/remote.exp | 11 +++++++----
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 51d788b..117ab9b 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,5 +1,10 @@
 2017-10-13  Pedro Alves  <palves@redhat.com>
 
+	* gdb.base/remote.exp: Check gdb_protocol instead of is_remote.
+	(top level): Add comment.
+
+2017-10-13  Pedro Alves  <palves@redhat.com>
+
 	* gdb.base/remote.exp (top level): Fix comment typo and add
 	missing return.
 
diff --git a/gdb/testsuite/gdb.base/remote.exp b/gdb/testsuite/gdb.base/remote.exp
index db6fc00..2f3ede1 100644
--- a/gdb/testsuite/gdb.base/remote.exp
+++ b/gdb/testsuite/gdb.base/remote.exp
@@ -13,10 +13,9 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-
-
-# test only on a remote target board
-if {! [is_remote target]} {
+# Test only on boards that actually use the remote protocol.
+if {[target_info gdb_protocol] != "remote"
+    && [target_info gdb_protocol] != "extended-remote"} {
     return
 }
 
@@ -103,6 +102,10 @@ proc gdb_load_timed {executable class writesize} {
     pass $test
 }
 
+# These download tests won't actually download anything on !is_remote
+# target boards, but we run them anyway because it's simpler, and
+# harmless.
+
 # Typically about 400-1 bytes can be downloaded
 gdb_load_timed $binfile "limit" 398
 gdb_load_timed $binfile "limit" 400
-- 
2.5.5