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