1 /* 2 * Copyright (C) 2008, 2009 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 Computer, 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 <algorithm> 34 #include <string.h> 35 36 #include <wtf/Assertions.h> 37 38 namespace JSC { 39 40 #define FOR_EACH_OPCODE_ID(macro) \ 41 macro(op_enter, 1) \ 42 macro(op_enter_with_activation, 2) \ 43 macro(op_create_arguments, 1) \ 44 macro(op_convert_this, 2) \ 45 \ 46 macro(op_unexpected_load, 3) \ 47 macro(op_new_object, 2) \ 48 macro(op_new_array, 4) \ 49 macro(op_new_regexp, 3) \ 50 macro(op_mov, 3) \ 51 \ 52 macro(op_not, 3) \ 53 macro(op_eq, 4) \ 54 macro(op_eq_null, 3) \ 55 macro(op_neq, 4) \ 56 macro(op_neq_null, 3) \ 57 macro(op_stricteq, 4) \ 58 macro(op_nstricteq, 4) \ 59 macro(op_less, 4) \ 60 macro(op_lesseq, 4) \ 61 \ 62 macro(op_pre_inc, 2) \ 63 macro(op_pre_dec, 2) \ 64 macro(op_post_inc, 3) \ 65 macro(op_post_dec, 3) \ 66 macro(op_to_jsnumber, 3) \ 67 macro(op_negate, 3) \ 68 macro(op_add, 5) \ 69 macro(op_mul, 5) \ 70 macro(op_div, 4) \ 71 macro(op_mod, 4) \ 72 macro(op_sub, 5) \ 73 \ 74 macro(op_lshift, 4) \ 75 macro(op_rshift, 4) \ 76 macro(op_urshift, 4) \ 77 macro(op_bitand, 5) \ 78 macro(op_bitxor, 5) \ 79 macro(op_bitor, 5) \ 80 macro(op_bitnot, 3) \ 81 \ 82 macro(op_instanceof, 5) \ 83 macro(op_typeof, 3) \ 84 macro(op_is_undefined, 3) \ 85 macro(op_is_boolean, 3) \ 86 macro(op_is_number, 3) \ 87 macro(op_is_string, 3) \ 88 macro(op_is_object, 3) \ 89 macro(op_is_function, 3) \ 90 macro(op_in, 4) \ 91 \ 92 macro(op_resolve, 3) \ 93 macro(op_resolve_skip, 4) \ 94 macro(op_resolve_global, 6) \ 95 macro(op_get_scoped_var, 4) \ 96 macro(op_put_scoped_var, 4) \ 97 macro(op_get_global_var, 4) \ 98 macro(op_put_global_var, 4) \ 99 macro(op_resolve_base, 3) \ 100 macro(op_resolve_with_base, 4) \ 101 macro(op_resolve_func, 4) \ 102 macro(op_get_by_id, 8) \ 103 macro(op_get_by_id_self, 8) \ 104 macro(op_get_by_id_self_list, 8) \ 105 macro(op_get_by_id_proto, 8) \ 106 macro(op_get_by_id_proto_list, 8) \ 107 macro(op_get_by_id_chain, 8) \ 108 macro(op_get_by_id_generic, 8) \ 109 macro(op_get_array_length, 8) \ 110 macro(op_get_string_length, 8) \ 111 macro(op_put_by_id, 8) \ 112 macro(op_put_by_id_transition, 8) \ 113 macro(op_put_by_id_replace, 8) \ 114 macro(op_put_by_id_generic, 8) \ 115 macro(op_del_by_id, 4) \ 116 macro(op_get_by_val, 4) \ 117 macro(op_put_by_val, 4) \ 118 macro(op_del_by_val, 4) \ 119 macro(op_put_by_index, 4) \ 120 macro(op_put_getter, 4) \ 121 macro(op_put_setter, 4) \ 122 \ 123 macro(op_jmp, 2) \ 124 macro(op_jtrue, 3) \ 125 macro(op_jfalse, 3) \ 126 macro(op_jeq_null, 3) \ 127 macro(op_jneq_null, 3) \ 128 macro(op_jnless, 4) \ 129 macro(op_jmp_scopes, 3) \ 130 macro(op_loop, 2) \ 131 macro(op_loop_if_true, 3) \ 132 macro(op_loop_if_less, 4) \ 133 macro(op_loop_if_lesseq, 4) \ 134 macro(op_switch_imm, 4) \ 135 macro(op_switch_char, 4) \ 136 macro(op_switch_string, 4) \ 137 \ 138 macro(op_new_func, 3) \ 139 macro(op_new_func_exp, 3) \ 140 macro(op_call, 5) \ 141 macro(op_call_eval, 5) \ 142 macro(op_tear_off_activation, 2) \ 143 macro(op_tear_off_arguments, 1) \ 144 macro(op_ret, 2) \ 145 \ 146 macro(op_construct, 7) \ 147 macro(op_construct_verify, 3) \ 148 \ 149 macro(op_get_pnames, 3) \ 150 macro(op_next_pname, 4) \ 151 \ 152 macro(op_push_scope, 2) \ 153 macro(op_pop_scope, 1) \ 154 macro(op_push_new_scope, 4) \ 155 \ 156 macro(op_catch, 2) \ 157 macro(op_throw, 2) \ 158 macro(op_new_error, 4) \ 159 \ 160 macro(op_jsr, 3) \ 161 macro(op_sret, 2) \ 162 \ 163 macro(op_debug, 4) \ 164 macro(op_profile_will_call, 2) \ 165 macro(op_profile_did_call, 2) \ 166 \ 167 macro(op_end, 2) // end must be the last opcode in the list 168 169 #define OPCODE_ID_ENUM(opcode, length) opcode, 170 typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID; 171 #undef OPCODE_ID_ENUM 172 173 const int numOpcodeIDs = op_end + 1; 174 175 #define OPCODE_ID_LENGTHS(id, length) const int id##_length = length; 176 FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS); 177 #undef OPCODE_ID_SIZES 178 179 #define OPCODE_LENGTH(opcode) opcode##_length 180 181 #define OPCODE_ID_LENGTH_MAP(opcode, length) length, 182 const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) }; 183 #undef OPCODE_ID_LENGTH_MAP 184 185 #define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= op_end, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID); 186 FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID); 187 #undef VERIFY_OPCODE_ID 188 189 #if HAVE(COMPUTED_GOTO) 190 typedef void* Opcode; 191 #else 192 typedef OpcodeID Opcode; 193 #endif 194 195 #if ENABLE(OPCODE_SAMPLING) || ENABLE(CODEBLOCK_SAMPLING) || ENABLE(OPCODE_STATS) 196 197 #define PADDING_STRING " " 198 #define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING)) 199 200 extern const char* const opcodeNames[]; 201 padOpcodeName(OpcodeID op,unsigned width)202 inline const char* padOpcodeName(OpcodeID op, unsigned width) 203 { 204 unsigned pad = width - strlen(opcodeNames[op]); 205 pad = std::min(pad, PADDING_STRING_LENGTH); 206 return PADDING_STRING + PADDING_STRING_LENGTH - pad; 207 } 208 209 #undef PADDING_STRING_LENGTH 210 #undef PADDING_STRING 211 212 #endif 213 214 #if ENABLE(OPCODE_STATS) 215 216 struct OpcodeStats { 217 OpcodeStats(); 218 ~OpcodeStats(); 219 static long long opcodeCounts[numOpcodeIDs]; 220 static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs]; 221 static int lastOpcode; 222 223 static void recordInstruction(int opcode); 224 static void resetLastInstruction(); 225 }; 226 227 #endif 228 229 } // namespace JSC 230 231 #endif // Opcode_h 232