1 // Copyright 2007-2008 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_DISASM_H_ 6 #define V8_DISASM_H_ 7 8 #include "src/utils.h" 9 10 namespace disasm { 11 12 typedef unsigned char byte; 13 14 // Interface and default implementation for converting addresses and 15 // register-numbers to text. The default implementation is machine 16 // specific. 17 class NameConverter { 18 public: ~NameConverter()19 virtual ~NameConverter() {} 20 virtual const char* NameOfCPURegister(int reg) const; 21 virtual const char* NameOfByteCPURegister(int reg) const; 22 virtual const char* NameOfXMMRegister(int reg) const; 23 virtual const char* NameOfAddress(byte* addr) const; 24 virtual const char* NameOfConstant(byte* addr) const; 25 virtual const char* NameInCode(byte* addr) const; 26 27 protected: 28 v8::internal::EmbeddedVector<char, 128> tmp_buffer_; 29 }; 30 31 32 // A generic Disassembler interface 33 class Disassembler { 34 public: 35 // Caller deallocates converter. 36 explicit Disassembler(const NameConverter& converter); 37 38 virtual ~Disassembler(); 39 40 // Writes one disassembled instruction into 'buffer' (0-terminated). 41 // Returns the length of the disassembled machine instruction in bytes. 42 int InstructionDecode(v8::internal::Vector<char> buffer, byte* instruction); 43 44 // Returns -1 if instruction does not mark the beginning of a constant pool, 45 // or the number of entries in the constant pool beginning here. 46 int ConstantPoolSizeAt(byte* instruction); 47 48 // Write disassembly into specified file 'f' using specified NameConverter 49 // (see constructor). 50 static void Disassemble(FILE* f, byte* begin, byte* end); 51 private: 52 const NameConverter& converter_; 53 54 DISALLOW_IMPLICIT_CONSTRUCTORS(Disassembler); 55 }; 56 57 } // namespace disasm 58 59 #endif // V8_DISASM_H_ 60