Zachary Anderson
6cd8a79078
R=asiva@google.com Review-Url: https://codereview.chromium.org/2974233002 .
34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/code_patcher.h"
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#include "vm/cpu.h"
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#include "vm/instructions.h"
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#include "vm/object.h"
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#include "vm/virtual_memory.h"
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namespace dart {
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DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code");
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WritableInstructionsScope::WritableInstructionsScope(uword address,
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intptr_t size)
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: address_(address), size_(size) {
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if (FLAG_write_protect_code) {
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bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address), size,
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VirtualMemory::kReadWrite);
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ASSERT(status);
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}
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}
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WritableInstructionsScope::~WritableInstructionsScope() {
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if (FLAG_write_protect_code) {
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bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_),
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size_, VirtualMemory::kReadExecute);
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ASSERT(status);
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}
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}
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} // namespace dart
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