[patch] Skip async-shell.exp if displaced stepping is not supported

[Yao Qi <yao@codesourcery.com>]

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non-stop mode needs displaced stepping.  Skip this test on the target
which displaced stepping is not supported.

-- 
Yao (齐尧)

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2011-07-13  Yao Qi  <yao@codesourcery.com>

	gdb/testsuite/
	* gdb.base/async-shell.exp: Skip test if displaced stepping is not
        supported.

---
 gdb/testsuite/gdb.base/async-shell.exp |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/gdb/testsuite/gdb.base/async-shell.exp b/gdb/testsuite/gdb.base/async-shell.exp
index b5ccd1f..a1eb314 100644
--- a/gdb/testsuite/gdb.base/async-shell.exp
+++ b/gdb/testsuite/gdb.base/async-shell.exp
@@ -14,6 +14,12 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 set testfile async-shell
+
+if { ![support_displaced_stepping] } { 
+    unsupported "displaced stepping"
+    return -1
+}
+
 if { [prepare_for_testing ${testfile}.exp ${testfile}] } {
     return -1
 }
-- 
1.7.0.4