[pushed] Make gdb.base/solib-nodir.exp work with --target_board=native-extended-gdbserver

[Pedro Alves <palves at redhat dot com>]

Fixes:
 Running .../src/gdb/testsuite/gdb.base/solib-nodir.exp ...
 FAIL: gdb.base/solib-nodir.exp: library loaded

... by using the new "set cwd" command.

gdb/testsuite/ChangeLog:
2017-10-13  Pedro Alves  <palves@redhat.com>
	    Simon Marchi <simon.marchi@polymtl.ca>

	* gdb.base/solib-nodir.exp: Split is_remote and skip_shlib_tests
	calls and add comments.  Skip test if use_gdb_stub is set.
	(top level): Use "set cwd" command instead of "cd" command.
---
 gdb/testsuite/ChangeLog                |  7 +++++++
 gdb/testsuite/gdb.base/solib-nodir.exp | 18 +++++++++++++++---
 2 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 9aac613..b37da2a 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,4 +1,11 @@
 2017-10-13  Pedro Alves  <palves@redhat.com>
+	    Simon Marchi  <simon.marchi@polymtl.ca>
+
+	* gdb.base/solib-nodir.exp: Split is_remote and skip_shlib_tests
+	calls and add comments.  Skip test if use_gdb_stub is set.
+	(top level): Use "set cwd" command instead of "cd" command.
+
+2017-10-13  Pedro Alves  <palves@redhat.com>
 
 	* gdb.base/shlib-call.exp (top level): Use gdb_run_cmd and remove
 	is_remote target check.
diff --git a/gdb/testsuite/gdb.base/solib-nodir.exp b/gdb/testsuite/gdb.base/solib-nodir.exp
index 9cb682e..15673d1 100644
--- a/gdb/testsuite/gdb.base/solib-nodir.exp
+++ b/gdb/testsuite/gdb.base/solib-nodir.exp
@@ -13,8 +13,19 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-# are we on a target board
-if {[is_remote target] || [skip_shlib_tests]} {
+if [skip_shlib_tests] {
+    return
+}
+
+# The testcase assumes the target can access the OBJDIR.
+if [is_remote target] {
+    return
+}
+
+# We need to be able to influence the target's environment and working
+# directory.  Can't do that if when we connect the inferior is already
+# running.
+if [target_info exists use_gdb_stub] {
     return
 }
 
@@ -44,7 +55,8 @@ clean_restart $executable
 gdb_load_shlib ${binlibfile}
 
 gdb_test_no_output "set env LD_LIBRARY_PATH=:"
-gdb_test "cd ${binlibfiledir}" "Working directory [string_to_regexp ${binlibfiledir}]\\." "cd OBJDIR/${subdir}"
+gdb_test_no_output "set cwd ${binlibfiledir}" \
+    "set cwd OBJDIR/${subdir}"
 
 set test "library loaded"
 if [runto_main] {
-- 
2.5.5