00001 // Copyright 2006-2008 the V8 project authors. All rights reserved. 00002 // Redistribution and use in source and binary forms, with or without 00003 // modification, are permitted provided that the following conditions are 00004 // met: 00005 // 00006 // * Redistributions of source code must retain the above copyright 00007 // notice, this list of conditions and the following disclaimer. 00008 // * Redistributions in binary form must reproduce the above 00009 // copyright notice, this list of conditions and the following 00010 // disclaimer in the documentation and/or other materials provided 00011 // with the distribution. 00012 // * Neither the name of Google Inc. nor the names of its 00013 // contributors may be used to endorse or promote products derived 00014 // from this software without specific prior written permission. 00015 // 00016 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00017 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00018 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00019 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00020 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00021 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00022 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00026 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 00028 #ifndef V8_MEMORY_H_ 00029 #define V8_MEMORY_H_ 00030 00031 namespace v8 { namespace internal { 00032 00033 // Memory provides an interface to 'raw' memory. It encapsulates the casts 00034 // that typically are needed when incompatible pointer types are used. 00035 00036 class Memory { 00037 public: 00038 static uint32_t& uint32_at(Address addr) { 00039 return *reinterpret_cast<uint32_t*>(addr); 00040 } 00041 00042 static int32_t& int32_at(Address addr) { 00043 return *reinterpret_cast<int32_t*>(addr); 00044 } 00045 00046 static int& int_at(Address addr) { 00047 return *reinterpret_cast<int*>(addr); 00048 } 00049 00050 static Address& Address_at(Address addr) { 00051 return *reinterpret_cast<Address*>(addr); 00052 } 00053 00054 static Object*& Object_at(Address addr) { 00055 return *reinterpret_cast<Object**>(addr); 00056 } 00057 }; 00058 00059 } } // namespace v8::internal 00060 00061 #endif // V8_MEMORY_H_