Add test case for tracepoints with conditions

This patch adds a test case for tracepoints with a condition expression.
Each case will test a condition against the number of frames that should
have been traced.  Some of these tests fail on x86_64 and others on
i386, which have been marked as known failures for now, see PR/18955.

gdb/testsuite/ChangeLog:

2015-09-17  Pierre Langlois  <pierre.langlois@arm.com>
	    Yao Qi  <yao.qi@linaro.org>

	* gdb.trace/trace-condition.c: New file.
	* gdb.trace/trace-condition.exp: New file.

1 files changed, 66 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.trace/trace-condition.c b/gdb/testsuite/gdb.trace/trace-condition.c
new file mode 100644
index 0000000..2e965c9
--- /dev/null
+++ b/gdb/testsuite/gdb.trace/trace-condition.c
@@ -0,0 +1,66 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2011-2015 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/>.  */
+
+#ifdef SYMBOL_PREFIX
+#define SYMBOL(str)     SYMBOL_PREFIX #str
+#else
+#define SYMBOL(str)     #str
+#endif
+
+int globvar;
+
+static void
+begin (void)
+{
+}
+
+/* Called from asm.  */
+static void __attribute__((used))
+func (void)
+{
+}
+
+static void
+marker (int anarg)
+{
+  /* `set_point' is the label at which to set a fast tracepoint.  The
+     insn at the label must be large enough to fit a fast tracepoint
+     jump.  */
+  asm ("    .global " SYMBOL (set_point) "\n"
+       SYMBOL (set_point) ":\n"
+#if (defined __x86_64__ || defined __i386__)
+       "    call " SYMBOL (func) "\n"
+#endif
+       );
+}
+
+static void
+end (void)
+{
+}
+
+int
+main ()
+{
+  begin ();
+
+  for (globvar = 1; globvar < 11; ++globvar)
+    marker (globvar * 100);
+
+  end ();
+  return 0;
+}