2011-10-31 Pedro Alves <pedro@codesourcery.com>

	gdb/gdbserver/
	* mem-break.c (check_mem_write): Add `myaddr' parameter.  Don't
	clobber the breakpoints' shadows with fast tracepoint jumps.
	* mem-break.h (check_mem_write): Add `myaddr' parameter.
	* target.c (write_inferior_memory): Also pass MYADDR down to
	check_mem_write.

	gdb/testsuite/
        * gdb.trace/trace-break.c: New.
        * gdb.trace/trace-break.exp: New.

1 files changed, 58 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.trace/trace-break.c b/gdb/testsuite/gdb.trace/trace-break.c
new file mode 100644
index 00000000000..fd061424421
--- /dev/null
+++ b/gdb/testsuite/gdb.trace/trace-break.c
@@ -0,0 +1,58 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2011 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
+
+/* Called from asm.  */
+static void __attribute__((used))
+func (void)
+{}
+
+static void
+marker (void)
+{
+  /* Some code to make sure `b marker' and `b set_point' set
+     breakpoints at different addresses.  */
+  int a = 0;
+  int b = a;
+
+  /* `set_point' is the label where we'll set multiple tracepoints and
+     breakpoints at.  The insn at the label must the 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 ()
+{
+  marker ();
+  end ();
+  return 0;
+}