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// Copyright 2011 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_V8MEMORY_H_
#define V8_V8MEMORY_H_
namespace v8 {
namespace internal {
// Memory provides an interface to 'raw' memory. It encapsulates the casts
// that typically are needed when incompatible pointer types are used.
class Memory {
public:
static uint8_t& uint8_at(Address addr) {
return *reinterpret_cast<uint8_t*>(addr);
}
static uint16_t& uint16_at(Address addr) {
return *reinterpret_cast<uint16_t*>(addr);
}
static uint32_t& uint32_at(Address addr) {
return *reinterpret_cast<uint32_t*>(addr);
}
static int32_t& int32_at(Address addr) {
return *reinterpret_cast<int32_t*>(addr);
}
static uint64_t& uint64_at(Address addr) {
return *reinterpret_cast<uint64_t*>(addr);
}
static int& int_at(Address addr) {
return *reinterpret_cast<int*>(addr);
}
static unsigned& unsigned_at(Address addr) {
return *reinterpret_cast<unsigned*>(addr);
}
static intptr_t& intptr_at(Address addr) {
return *reinterpret_cast<intptr_t*>(addr);
}
static uintptr_t& uintptr_at(Address addr) {
return *reinterpret_cast<uintptr_t*>(addr);
}
static double& double_at(Address addr) {
return *reinterpret_cast<double*>(addr);
}
static Address& Address_at(Address addr) {
return *reinterpret_cast<Address*>(addr);
}
static Object*& Object_at(Address addr) {
return *reinterpret_cast<Object**>(addr);
}
static Handle<Object>& Object_Handle_at(Address addr) {
return *reinterpret_cast<Handle<Object>*>(addr);
}
static bool IsAddressInRange(Address base, Address address, uint32_t size) {
uintptr_t numeric_base = reinterpret_cast<uintptr_t>(base);
uintptr_t numeric_address = reinterpret_cast<uintptr_t>(address);
return numeric_base <= numeric_address &&
numeric_address < numeric_base + size;
}
};
} // namespace internal
} // namespace v8
#endif // V8_V8MEMORY_H_
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