1 /* 2 * Copyright (C) 2008, 2009 Apple Inc. All rights reserved. 3 * Copyright (C) 2008 Cameron Zwarich <cwzwarich (at) 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_create_activation, 2) \ 43 macro(op_init_lazy_reg, 2) \ 44 macro(op_create_arguments, 2) \ 45 macro(op_create_this, 3) \ 46 macro(op_get_callee, 2) \ 47 macro(op_convert_this, 2) \ 48 macro(op_convert_this_strict, 2) \ 49 \ 50 macro(op_new_object, 2) \ 51 macro(op_new_array, 4) \ 52 macro(op_new_regexp, 3) \ 53 macro(op_mov, 3) \ 54 \ 55 macro(op_not, 3) \ 56 macro(op_eq, 4) \ 57 macro(op_eq_null, 3) \ 58 macro(op_neq, 4) \ 59 macro(op_neq_null, 3) \ 60 macro(op_stricteq, 4) \ 61 macro(op_nstricteq, 4) \ 62 macro(op_less, 4) \ 63 macro(op_lesseq, 4) \ 64 \ 65 macro(op_pre_inc, 2) \ 66 macro(op_pre_dec, 2) \ 67 macro(op_post_inc, 3) \ 68 macro(op_post_dec, 3) \ 69 macro(op_to_jsnumber, 3) \ 70 macro(op_negate, 3) \ 71 macro(op_add, 5) \ 72 macro(op_mul, 5) \ 73 macro(op_div, 5) \ 74 macro(op_mod, 4) \ 75 macro(op_sub, 5) \ 76 \ 77 macro(op_lshift, 4) \ 78 macro(op_rshift, 4) \ 79 macro(op_urshift, 4) \ 80 macro(op_bitand, 5) \ 81 macro(op_bitxor, 5) \ 82 macro(op_bitor, 5) \ 83 macro(op_bitnot, 3) \ 84 \ 85 macro(op_check_has_instance, 2) \ 86 macro(op_instanceof, 5) \ 87 macro(op_typeof, 3) \ 88 macro(op_is_undefined, 3) \ 89 macro(op_is_boolean, 3) \ 90 macro(op_is_number, 3) \ 91 macro(op_is_string, 3) \ 92 macro(op_is_object, 3) \ 93 macro(op_is_function, 3) \ 94 macro(op_in, 4) \ 95 \ 96 macro(op_resolve, 3) \ 97 macro(op_resolve_skip, 4) \ 98 macro(op_resolve_global, 5) \ 99 macro(op_resolve_global_dynamic, 6) \ 100 macro(op_get_scoped_var, 4) \ 101 macro(op_put_scoped_var, 4) \ 102 macro(op_get_global_var, 3) \ 103 macro(op_put_global_var, 3) \ 104 macro(op_resolve_base, 4) \ 105 macro(op_ensure_property_exists, 3) \ 106 macro(op_resolve_with_base, 4) \ 107 macro(op_get_by_id, 8) \ 108 macro(op_get_by_id_self, 8) \ 109 macro(op_get_by_id_self_list, 8) \ 110 macro(op_get_by_id_proto, 8) \ 111 macro(op_get_by_id_proto_list, 8) \ 112 macro(op_get_by_id_chain, 8) \ 113 macro(op_get_by_id_getter_self, 8) \ 114 macro(op_get_by_id_getter_self_list, 8) \ 115 macro(op_get_by_id_getter_proto, 8) \ 116 macro(op_get_by_id_getter_proto_list, 8) \ 117 macro(op_get_by_id_getter_chain, 8) \ 118 macro(op_get_by_id_custom_self, 8) \ 119 macro(op_get_by_id_custom_self_list, 8) \ 120 macro(op_get_by_id_custom_proto, 8) \ 121 macro(op_get_by_id_custom_proto_list, 8) \ 122 macro(op_get_by_id_custom_chain, 8) \ 123 macro(op_get_by_id_generic, 8) \ 124 macro(op_get_array_length, 8) \ 125 macro(op_get_string_length, 8) \ 126 macro(op_get_arguments_length, 4) \ 127 macro(op_put_by_id, 9) \ 128 macro(op_put_by_id_transition, 9) \ 129 macro(op_put_by_id_replace, 9) \ 130 macro(op_put_by_id_generic, 9) \ 131 macro(op_del_by_id, 4) \ 132 macro(op_get_by_val, 4) \ 133 macro(op_get_argument_by_val, 4) \ 134 macro(op_get_by_pname, 7) \ 135 macro(op_put_by_val, 4) \ 136 macro(op_del_by_val, 4) \ 137 macro(op_put_by_index, 4) \ 138 macro(op_put_getter, 4) \ 139 macro(op_put_setter, 4) \ 140 \ 141 macro(op_jmp, 2) \ 142 macro(op_jtrue, 3) \ 143 macro(op_jfalse, 3) \ 144 macro(op_jeq_null, 3) \ 145 macro(op_jneq_null, 3) \ 146 macro(op_jneq_ptr, 4) \ 147 macro(op_jnless, 4) \ 148 macro(op_jnlesseq, 4) \ 149 macro(op_jless, 4) \ 150 macro(op_jlesseq, 4) \ 151 macro(op_jmp_scopes, 3) \ 152 macro(op_loop, 2) \ 153 macro(op_loop_if_true, 3) \ 154 macro(op_loop_if_false, 3) \ 155 macro(op_loop_if_less, 4) \ 156 macro(op_loop_if_lesseq, 4) \ 157 macro(op_switch_imm, 4) \ 158 macro(op_switch_char, 4) \ 159 macro(op_switch_string, 4) \ 160 \ 161 macro(op_new_func, 4) \ 162 macro(op_new_func_exp, 3) \ 163 macro(op_call, 4) \ 164 macro(op_call_eval, 4) \ 165 macro(op_call_varargs, 4) \ 166 macro(op_load_varargs, 4) \ 167 macro(op_tear_off_activation, 3) \ 168 macro(op_tear_off_arguments, 2) \ 169 macro(op_ret, 2) \ 170 macro(op_call_put_result, 2) \ 171 macro(op_ret_object_or_this, 3) \ 172 macro(op_method_check, 1) \ 173 \ 174 macro(op_construct, 4) \ 175 macro(op_strcat, 4) \ 176 macro(op_to_primitive, 3) \ 177 \ 178 macro(op_get_pnames, 6) \ 179 macro(op_next_pname, 7) \ 180 \ 181 macro(op_push_scope, 2) \ 182 macro(op_pop_scope, 1) \ 183 macro(op_push_new_scope, 4) \ 184 \ 185 macro(op_catch, 2) \ 186 macro(op_throw, 2) \ 187 macro(op_throw_reference_error, 2) \ 188 \ 189 macro(op_jsr, 3) \ 190 macro(op_sret, 2) \ 191 \ 192 macro(op_debug, 4) \ 193 macro(op_profile_will_call, 2) \ 194 macro(op_profile_did_call, 2) \ 195 \ 196 macro(op_end, 2) // end must be the last opcode in the list 197 198 #define OPCODE_ID_ENUM(opcode, length) opcode, 199 typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID; 200 #undef OPCODE_ID_ENUM 201 202 const int numOpcodeIDs = op_end + 1; 203 204 #define OPCODE_ID_LENGTHS(id, length) const int id##_length = length; 205 FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS); 206 #undef OPCODE_ID_LENGTHS 207 208 #define OPCODE_LENGTH(opcode) opcode##_length 209 210 #define OPCODE_ID_LENGTH_MAP(opcode, length) length, 211 const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) }; 212 #undef OPCODE_ID_LENGTH_MAP 213 214 #define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= op_end, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID); 215 FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID); 216 #undef VERIFY_OPCODE_ID 217 218 #if ENABLE(COMPUTED_GOTO_INTERPRETER) 219 #if COMPILER(RVCT) || COMPILER(INTEL) 220 typedef void* Opcode; 221 #else 222 typedef const void* Opcode; 223 #endif 224 #else 225 typedef OpcodeID Opcode; 226 #endif 227 228 #if ENABLE(OPCODE_SAMPLING) || ENABLE(CODEBLOCK_SAMPLING) || ENABLE(OPCODE_STATS) 229 230 #define PADDING_STRING " " 231 #define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING)) 232 233 extern const char* const opcodeNames[]; 234 235 inline const char* padOpcodeName(OpcodeID op, unsigned width) 236 { 237 unsigned pad = width - strlen(opcodeNames[op]); 238 pad = std::min(pad, PADDING_STRING_LENGTH); 239 return PADDING_STRING + PADDING_STRING_LENGTH - pad; 240 } 241 242 #undef PADDING_STRING_LENGTH 243 #undef PADDING_STRING 244 245 #endif 246 247 #if ENABLE(OPCODE_STATS) 248 249 struct OpcodeStats { 250 OpcodeStats(); 251 ~OpcodeStats(); 252 static long long opcodeCounts[numOpcodeIDs]; 253 static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs]; 254 static int lastOpcode; 255 256 static void recordInstruction(int opcode); 257 static void resetLastInstruction(); 258 }; 259 260 #endif 261 262 inline size_t opcodeLength(OpcodeID opcode) 263 { 264 switch (opcode) { 265 #define OPCODE_ID_LENGTHS(id, length) case id: return OPCODE_LENGTH(id); 266 FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS) 267 #undef OPCODE_ID_LENGTHS 268 } 269 ASSERT_NOT_REACHED(); 270 return 0; 271 } 272 273 } // namespace JSC 274 275 #endif // Opcode_h 276
