1/* 2 * Copyright (C) 2008, 2009, 2013, 2014 Apple Inc. All rights reserved. 3 * Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca> 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of Apple Inc. ("Apple") nor the names of 15 * its contributors may be used to endorse or promote products derived 16 * from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30#ifndef Opcode_h 31#define Opcode_h 32 33#include "Bytecodes.h" 34#include "LLIntOpcode.h" 35 36#include <algorithm> 37#include <string.h> 38 39#include <wtf/Assertions.h> 40 41namespace JSC { 42 43#define FOR_EACH_CORE_OPCODE_ID_WITH_EXTENSION(macro, extension__) \ 44 FOR_EACH_BYTECODE_ID(macro) \ 45 extension__ 46 47#define FOR_EACH_CORE_OPCODE_ID(macro) \ 48 FOR_EACH_CORE_OPCODE_ID_WITH_EXTENSION(macro, /* No extension */ ) 49 50#define FOR_EACH_OPCODE_ID(macro) \ 51 FOR_EACH_CORE_OPCODE_ID_WITH_EXTENSION( \ 52 macro, \ 53 FOR_EACH_LLINT_OPCODE_EXTENSION(macro) \ 54 ) 55 56 57#define OPCODE_ID_ENUM(opcode, length) opcode, 58 typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID; 59#undef OPCODE_ID_ENUM 60 61const int maxOpcodeLength = 9; 62#if !ENABLE(JIT) 63const int numOpcodeIDs = NUMBER_OF_BYTECODE_IDS + NUMBER_OF_CLOOP_BYTECODE_HELPER_IDS + NUMBER_OF_BYTECODE_HELPER_IDS; 64#else 65const int numOpcodeIDs = NUMBER_OF_BYTECODE_IDS + NUMBER_OF_BYTECODE_HELPER_IDS; 66#endif 67 68#define OPCODE_ID_LENGTHS(id, length) const int id##_length = length; 69 FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS); 70#undef OPCODE_ID_LENGTHS 71 72#define OPCODE_LENGTH(opcode) opcode##_length 73 74#define OPCODE_ID_LENGTH_MAP(opcode, length) length, 75 const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) }; 76#undef OPCODE_ID_LENGTH_MAP 77 78#define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= numOpcodeIDs, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID); 79 FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID); 80#undef VERIFY_OPCODE_ID 81 82#if ENABLE(COMPUTED_GOTO_OPCODES) 83typedef void* Opcode; 84#else 85typedef OpcodeID Opcode; 86#endif 87 88#define PADDING_STRING " " 89#define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING)) 90 91extern const char* const opcodeNames[]; 92 93inline const char* padOpcodeName(OpcodeID op, unsigned width) 94{ 95 unsigned pad = width - strlen(opcodeNames[op]); 96 pad = std::min(pad, PADDING_STRING_LENGTH); 97 return PADDING_STRING + PADDING_STRING_LENGTH - pad; 98} 99 100#undef PADDING_STRING_LENGTH 101#undef PADDING_STRING 102 103#if ENABLE(OPCODE_STATS) 104 105struct OpcodeStats { 106 OpcodeStats(); 107 ~OpcodeStats(); 108 static long long opcodeCounts[numOpcodeIDs]; 109 static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs]; 110 static int lastOpcode; 111 112 static void recordInstruction(int opcode); 113 static void resetLastInstruction(); 114}; 115 116#endif 117 118inline size_t opcodeLength(OpcodeID opcode) 119{ 120 switch (opcode) { 121#define OPCODE_ID_LENGTHS(id, length) case id: return OPCODE_LENGTH(id); 122 FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS) 123#undef OPCODE_ID_LENGTHS 124 } 125 RELEASE_ASSERT_NOT_REACHED(); 126 return 0; 127} 128 129} // namespace JSC 130 131#endif // Opcode_h 132