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79 lines
2.0 KiB
79 lines
2.0 KiB
// Copyright 2011 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_MEMORY_H_
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#define V8_MEMORY_H_
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namespace v8 {
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namespace internal {
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// Memory provides an interface to 'raw' memory. It encapsulates the casts
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// that typically are needed when incompatible pointer types are used.
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class Memory {
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public:
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static uint8_t& uint8_at(Address addr) {
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return *reinterpret_cast<uint8_t*>(addr);
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}
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static uint16_t& uint16_at(Address addr) {
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return *reinterpret_cast<uint16_t*>(addr);
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}
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static uint32_t& uint32_at(Address addr) {
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return *reinterpret_cast<uint32_t*>(addr);
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}
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static int32_t& int32_at(Address addr) {
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return *reinterpret_cast<int32_t*>(addr);
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}
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static uint64_t& uint64_at(Address addr) {
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return *reinterpret_cast<uint64_t*>(addr);
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}
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static int& int_at(Address addr) {
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return *reinterpret_cast<int*>(addr);
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}
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static unsigned& unsigned_at(Address addr) {
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return *reinterpret_cast<unsigned*>(addr);
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}
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static intptr_t& intptr_at(Address addr) {
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return *reinterpret_cast<intptr_t*>(addr);
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}
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static uintptr_t& uintptr_at(Address addr) {
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return *reinterpret_cast<uintptr_t*>(addr);
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}
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static double& double_at(Address addr) {
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return *reinterpret_cast<double*>(addr);
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}
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static Address& Address_at(Address addr) {
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return *reinterpret_cast<Address*>(addr);
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}
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static Object*& Object_at(Address addr) {
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return *reinterpret_cast<Object**>(addr);
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}
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static Handle<Object>& Object_Handle_at(Address addr) {
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return *reinterpret_cast<Handle<Object>*>(addr);
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}
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static bool IsAddressInRange(Address base, Address address, uint32_t size) {
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uintptr_t numeric_base = reinterpret_cast<uintptr_t>(base);
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uintptr_t numeric_address = reinterpret_cast<uintptr_t>(address);
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return numeric_base <= numeric_address &&
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numeric_address < numeric_base + size;
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}
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_MEMORY_H_
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