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_init_arguments, 1) \ 44 macro(op_create_arguments, 1) \ 45 macro(op_convert_this, 2) \ 46 \ 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, 5) \ 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_get_by_id, 8) \ 102 macro(op_get_by_id_self, 8) \ 103 macro(op_get_by_id_self_list, 8) \ 104 macro(op_get_by_id_proto, 8) \ 105 macro(op_get_by_id_proto_list, 8) \ 106 macro(op_get_by_id_chain, 8) \ 107 macro(op_get_by_id_generic, 8) \ 108 macro(op_get_array_length, 8) \ 109 macro(op_get_string_length, 8) \ 110 macro(op_put_by_id, 8) \ 111 macro(op_put_by_id_transition, 8) \ 112 macro(op_put_by_id_replace, 8) \ 113 macro(op_put_by_id_generic, 8) \ 114 macro(op_del_by_id, 4) \ 115 macro(op_get_by_val, 4) \ 116 macro(op_get_by_pname, 7) \ 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_jneq_ptr, 4) \ 129 macro(op_jnless, 4) \ 130 macro(op_jnlesseq, 4) \ 131 macro(op_jless, 4) \ 132 macro(op_jmp_scopes, 3) \ 133 macro(op_loop, 2) \ 134 macro(op_loop_if_true, 3) \ 135 macro(op_loop_if_false, 3) \ 136 macro(op_loop_if_less, 4) \ 137 macro(op_loop_if_lesseq, 4) \ 138 macro(op_switch_imm, 4) \ 139 macro(op_switch_char, 4) \ 140 macro(op_switch_string, 4) \ 141 \ 142 macro(op_new_func, 3) \ 143 macro(op_new_func_exp, 3) \ 144 macro(op_call, 5) \ 145 macro(op_call_eval, 5) \ 146 macro(op_call_varargs, 5) \ 147 macro(op_load_varargs, 3) \ 148 macro(op_tear_off_activation, 2) \ 149 macro(op_tear_off_arguments, 1) \ 150 macro(op_ret, 2) \ 151 macro(op_method_check, 1) \ 152 \ 153 macro(op_construct, 7) \ 154 macro(op_construct_verify, 3) \ 155 macro(op_strcat, 4) \ 156 macro(op_to_primitive, 3) \ 157 \ 158 macro(op_get_pnames, 6) \ 159 macro(op_next_pname, 7) \ 160 \ 161 macro(op_push_scope, 2) \ 162 macro(op_pop_scope, 1) \ 163 macro(op_push_new_scope, 4) \ 164 \ 165 macro(op_catch, 2) \ 166 macro(op_throw, 2) \ 167 macro(op_new_error, 4) \ 168 \ 169 macro(op_jsr, 3) \ 170 macro(op_sret, 2) \ 171 \ 172 macro(op_debug, 4) \ 173 macro(op_profile_will_call, 2) \ 174 macro(op_profile_did_call, 2) \ 175 \ 176 macro(op_end, 2) // end must be the last opcode in the list 177 178 #define OPCODE_ID_ENUM(opcode, length) opcode, 179 typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID; 180 #undef OPCODE_ID_ENUM 181 182 const int numOpcodeIDs = op_end + 1; 183 184 #define OPCODE_ID_LENGTHS(id, length) const int id##_length = length; 185 FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS); 186 #undef OPCODE_ID_LENGTHS 187 188 #define OPCODE_LENGTH(opcode) opcode##_length 189 190 #define OPCODE_ID_LENGTH_MAP(opcode, length) length, 191 const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) }; 192 #undef OPCODE_ID_LENGTH_MAP 193 194 #define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= op_end, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID); 195 FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID); 196 #undef VERIFY_OPCODE_ID 197 198 #if HAVE(COMPUTED_GOTO) 199 #if COMPILER(RVCT) || COMPILER(INTEL) 200 typedef void* Opcode; 201 #else 202 typedef const void* Opcode; 203 #endif 204 #else 205 typedef OpcodeID Opcode; 206 #endif 207 208 #if ENABLE(OPCODE_SAMPLING) || ENABLE(CODEBLOCK_SAMPLING) || ENABLE(OPCODE_STATS) 209 210 #define PADDING_STRING " " 211 #define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING)) 212 213 extern const char* const opcodeNames[]; 214 padOpcodeName(OpcodeID op,unsigned width)215 inline const char* padOpcodeName(OpcodeID op, unsigned width) 216 { 217 unsigned pad = width - strlen(opcodeNames[op]); 218 pad = std::min(pad, PADDING_STRING_LENGTH); 219 return PADDING_STRING + PADDING_STRING_LENGTH - pad; 220 } 221 222 #undef PADDING_STRING_LENGTH 223 #undef PADDING_STRING 224 225 #endif 226 227 #if ENABLE(OPCODE_STATS) 228 229 struct OpcodeStats { 230 OpcodeStats(); 231 ~OpcodeStats(); 232 static long long opcodeCounts[numOpcodeIDs]; 233 static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs]; 234 static int lastOpcode; 235 236 static void recordInstruction(int opcode); 237 static void resetLastInstruction(); 238 }; 239 240 #endif 241 242 } // namespace JSC 243 244 #endif // Opcode_h 245