Add test to make sure GDB knows which "kind" of watchpoint the target has

This adds a test that makes sure GDB knows whether the target has
continuable, or non-continuable watchpoints.

That is, the test confirms that GDB presents a watchpoint value change
at the first instruction right after the instruction that changes
memory.

gdb/testsuite/ChangeLog:
2014-09-16  Pedro Alves  <palves@redhat.com>

	* gdb.base/watchpoint-stops-at-right-insn.c: New file.
	* gdb.base/watchpoint-stops-at-right-insn.exp: New file.

1 files changed, 33 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/watchpoint-stops-at-right-insn.c b/gdb/testsuite/gdb.base/watchpoint-stops-at-right-insn.c
new file mode 100644
index 0000000..005d63f
--- /dev/null
+++ b/gdb/testsuite/gdb.base/watchpoint-stops-at-right-insn.c
@@ -0,0 +1,33 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2014 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/>.  */
+
+volatile int global;
+
+void
+set_global (int val)
+{
+  global = val;
+}
+
+int
+main (void)
+{
+  set_global (1);
+  set_global (2);
+
+  return 0;
+}