blob: c62be00cb979c8cae6404dcaf90acce78d17251d [file] [log] [blame]
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/code_patcher.h"
#include "vm/cpu.h"
#include "vm/instructions.h"
#include "vm/object.h"
#include "vm/virtual_memory.h"
namespace dart {
DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code");
WritableInstructionsScope::WritableInstructionsScope(uword address,
intptr_t size)
: address_(address), size_(size) {
if (FLAG_write_protect_code) {
bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address),
size,
VirtualMemory::kReadWrite);
ASSERT(status);
}
}
WritableInstructionsScope::~WritableInstructionsScope() {
if (FLAG_write_protect_code) {
bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_),
size_,
VirtualMemory::kReadExecute);
ASSERT(status);
}
}
} // namespace dart