AuroraMiddleware/v8
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Partially annotate V8 for MemorySanitizer.

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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.

R=danno@chromium.org

Review URL: https://codereview.chromium.org/27471003

Patch from Evgeniy Stepanov <eugenis@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17331 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
danno@chromium.org 2013-10-23 08:39:15 +00:00
parent a26805d746
commit c91fa18de9
2 changed files with 51 additions and 0 deletions
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49
src/msan.h Normal file
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@ -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_

2
src/spaces.cc
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@ -29,6 +29,7 @@
#include "macro-assembler.h"
#include "mark-compact.h"
#include "msan.h"
#include "platform.h"
namespace v8 {
@ -717,6 +718,7 @@ MemoryChunk* MemoryAllocator::AllocateChunk(intptr_t reserve_area_size,
executable,
owner);
result->set_reserved_memory(&reservation);
MSAN_MEMORY_IS_INITIALIZED(base, chunk_size);
return result;
}