gdb/doc/ChangeLog:

2012-04-27  Sergio Durigan Junior  <sergiodj@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* gdb.texinfo (Static Probe Points): New entry, explaining SystemTap
	and generic static probe support on GDB.

gdb/testsuite/ChangeLog:
2012-04-27  Sergio Durigan Junior  <sergiodj@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* gdb.base/default.exp: Add `$_probe_arg*' convenience
	variables.
	* gdb.base/stap-probe.c: New file.
	* gdb.base/stap-probe.exp: New file.
	* gdb.trace/stap-trace.c: New file.
	* gdb.trace/stap-trace.exp: New file.
	* gdb.cp/nextoverthrow.exp: Add check for SystemTap probe in
	libgcc's unwinder.

1 files changed, 108 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.base/stap-probe.c b/gdb/testsuite/gdb.base/stap-probe.c
new file mode 100644
index 0000000..1c7b05f
--- /dev/null
+++ b/gdb/testsuite/gdb.base/stap-probe.c
@@ -0,0 +1,108 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2012 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/>.  */
+
+#if USE_PROBES
+
+#define _SDT_HAS_SEMAPHORES
+__extension__ unsigned short test_user_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
+#define TEST test_user_semaphore
+
+__extension__ unsigned short test_two_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
+#define TEST2 test_two_semaphore
+
+__extension__ unsigned short test_m4_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
+
+__extension__ unsigned short test_pstr_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
+
+__extension__ unsigned short test_ps_semaphore __attribute__ ((unused)) __attribute__ ((section (".probes")));
+#else
+
+#define TEST 1
+#define TEST2 1
+
+#endif
+
+#include <sys/sdt.h>
+
+/* We only support SystemTap and only the v3 form.  */
+#if _SDT_NOTE_TYPE != 3
+#error "not using SystemTap v3 probes"
+#endif
+
+struct funcs
+{
+  int val;
+
+  const char *(*ps) (int);
+};
+
+static void
+m1 (void)
+{
+  if (TEST2)
+    STAP_PROBE (test, two);
+}
+
+static void
+m2 (void)
+{
+  if (TEST2)
+    STAP_PROBE (test, two);
+}
+
+static int
+f (int x)
+{
+  if (TEST)
+    STAP_PROBE1 (test, user, x);
+  return x+5;
+}
+
+static const char *
+pstr (int val)
+{
+  const char *a = "This is a test message.";
+  const char *b = "This is another test message.";
+
+  STAP_PROBE3 (test, ps, a, b, val);
+
+  return val == 0 ? a : b;
+}
+
+static void
+m4 (const struct funcs *fs, int v)
+{
+  STAP_PROBE3 (test, m4, fs->val, fs->ps (v), v);
+}
+
+int
+main()
+{
+  struct funcs fs;
+
+  fs.val = 42;
+  fs.ps = pstr;
+
+  f (f (23));
+  m1 ();
+  m2 ();
+
+  m4 (&fs, 0);
+  m4 (&fs, 1);
+
+  return 0; /* last break here */
+}