Revision: 17331
Author: [email protected]
Date: Wed Oct 23 08:39:15 2013 UTC
Log: Partially annotate V8 for MemorySanitizer.
This is a part of https://codereview.chromium.org/26006004/.
These changes are enough to run most apps that embed V8 (by additionally
ignoring all memory accesses from V8), but don't help testing V8 itself in
any
way.
[email protected]
Review URL: https://codereview.chromium.org/27471003
Patch from Evgeniy Stepanov <[email protected]>.
http://code.google.com/p/v8/source/detail?r=17331
Added:
/branches/bleeding_edge/src/msan.h
Modified:
/branches/bleeding_edge/src/spaces.cc
=======================================
--- /dev/null
+++ /branches/bleeding_edge/src/msan.h Wed Oct 23 08:39:15 2013 UTC
@@ -0,0 +1,49 @@
+// Copyright 2013 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// MemorySanitizer support.
+
+#ifndef V8_MSAN_H_
+#define V8_MSAN_H_
+
+#ifndef __has_feature
+# define __has_feature(x) 0
+#endif
+
+#if __has_feature(memory_sanitizer)
+# define MEMORY_SANITIZER
+#endif
+
+#ifdef MEMORY_SANITIZER
+# include <sanitizer/msan_interface.h>
+// Marks a memory range as fully initialized.
+# define MSAN_MEMORY_IS_INITIALIZED(p, s) __msan_unpoison((p), (s))
+#else
+# define MSAN_MEMORY_IS_INITIALIZED(p, s)
+#endif
+
+#endif // V8_MSAN_H_
=======================================
--- /branches/bleeding_edge/src/spaces.cc Mon Oct 14 09:48:44 2013 UTC
+++ /branches/bleeding_edge/src/spaces.cc Wed Oct 23 08:39:15 2013 UTC
@@ -29,6 +29,7 @@
#include "macro-assembler.h"
#include "mark-compact.h"
+#include "msan.h"
#include "platform.h"
namespace v8 {
@@ -717,6 +718,7 @@
executable,
owner);
result->set_reserved_memory(&reservation);
+ MSAN_MEMORY_IS_INITIALIZED(base, chunk_size);
return result;
}
--
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