1 // Copyright 2007-2008 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #ifndef V8_DISASM_H_ 29 #define V8_DISASM_H_ 30 31 namespace disasm { 32 33 typedef unsigned char byte; 34 35 // Interface and default implementation for converting addresses and 36 // register-numbers to text. The default implementation is machine 37 // specific. 38 class NameConverter { 39 public: 40 virtual ~NameConverter() {} 41 virtual const char* NameOfCPURegister(int reg) const; 42 virtual const char* NameOfByteCPURegister(int reg) const; 43 virtual const char* NameOfXMMRegister(int reg) const; 44 virtual const char* NameOfAddress(byte* addr) const; 45 virtual const char* NameOfConstant(byte* addr) const; 46 virtual const char* NameInCode(byte* addr) const; 47 }; 48 49 50 // A generic Disassembler interface 51 class Disassembler { 52 public: 53 // Caller deallocates converter. 54 explicit Disassembler(const NameConverter& converter); 55 56 virtual ~Disassembler(); 57 58 // Writes one disassembled instruction into 'buffer' (0-terminated). 59 // Returns the length of the disassembled machine instruction in bytes. 60 int InstructionDecode(v8::internal::Vector<char> buffer, byte* instruction); 61 62 // Returns -1 if instruction does not mark the beginning of a constant pool, 63 // or the number of entries in the constant pool beginning here. 64 int ConstantPoolSizeAt(byte* instruction); 65 66 // Write disassembly into specified file 'f' using specified NameConverter 67 // (see constructor). 68 static void Disassemble(FILE* f, byte* begin, byte* end); 69 private: 70 const NameConverter& converter_; 71 72 DISALLOW_IMPLICIT_CONSTRUCTORS(Disassembler); 73 }; 74 75 } // namespace disasm 76 77 #endif // V8_DISASM_H_ 78
