1# Copyright (C) 2011 Apple Inc. All rights reserved. 2# 3# Redistribution and use in source and binary forms, with or without 4# modification, are permitted provided that the following conditions 5# are met: 6# 1. Redistributions of source code must retain the above copyright 7# notice, this list of conditions and the following disclaimer. 8# 2. Redistributions in binary form must reproduce the above copyright 9# notice, this list of conditions and the following disclaimer in the 10# documentation and/or other materials provided with the distribution. 11# 12# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 13# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 14# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 15# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 16# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 17# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 18# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 19# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 20# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 21# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 22# THE POSSIBILITY OF SUCH DAMAGE. 23 24require "config" 25 26# Interesting invariant, which we take advantage of: branching instructions 27# always begin with "b", and no non-branching instructions begin with "b". 28# Terminal instructions are "jmp" and "ret". 29 30MACRO_INSTRUCTIONS = 31 [ 32 "addi", 33 "andi", 34 "lshifti", 35 "lshiftp", 36 "lshiftq", 37 "muli", 38 "negi", 39 "negp", 40 "negq", 41 "noti", 42 "ori", 43 "rshifti", 44 "urshifti", 45 "rshiftp", 46 "urshiftp", 47 "rshiftq", 48 "urshiftq", 49 "subi", 50 "xori", 51 "loadi", 52 "loadis", 53 "loadb", 54 "loadbs", 55 "loadh", 56 "loadhs", 57 "storei", 58 "storeb", 59 "loadd", 60 "moved", 61 "stored", 62 "addd", 63 "divd", 64 "subd", 65 "muld", 66 "sqrtd", 67 "ci2d", 68 "fii2d", # usage: fii2d <gpr with least significant bits>, <gpr with most significant bits>, <fpr> 69 "fd2ii", # usage: fd2ii <fpr>, <gpr with least significant bits>, <gpr with most significant bits> 70 "fq2d", 71 "fd2q", 72 "bdeq", 73 "bdneq", 74 "bdgt", 75 "bdgteq", 76 "bdlt", 77 "bdlteq", 78 "bdequn", 79 "bdnequn", 80 "bdgtun", 81 "bdgtequn", 82 "bdltun", 83 "bdltequn", 84 "btd2i", 85 "td2i", 86 "bcd2i", 87 "movdz", 88 "pop", 89 "push", 90 "move", 91 "sxi2q", 92 "zxi2q", 93 "nop", 94 "bieq", 95 "bineq", 96 "bia", 97 "biaeq", 98 "bib", 99 "bibeq", 100 "bigt", 101 "bigteq", 102 "bilt", 103 "bilteq", 104 "bbeq", 105 "bbneq", 106 "bba", 107 "bbaeq", 108 "bbb", 109 "bbbeq", 110 "bbgt", 111 "bbgteq", 112 "bblt", 113 "bblteq", 114 "btis", 115 "btiz", 116 "btinz", 117 "btbs", 118 "btbz", 119 "btbnz", 120 "jmp", 121 "baddio", 122 "baddis", 123 "baddiz", 124 "baddinz", 125 "bsubio", 126 "bsubis", 127 "bsubiz", 128 "bsubinz", 129 "bmulio", 130 "bmulis", 131 "bmuliz", 132 "bmulinz", 133 "borio", 134 "boris", 135 "boriz", 136 "borinz", 137 "break", 138 "call", 139 "ret", 140 "cbeq", 141 "cbneq", 142 "cba", 143 "cbaeq", 144 "cbb", 145 "cbbeq", 146 "cbgt", 147 "cbgteq", 148 "cblt", 149 "cblteq", 150 "cieq", 151 "cineq", 152 "cia", 153 "ciaeq", 154 "cib", 155 "cibeq", 156 "cigt", 157 "cigteq", 158 "cilt", 159 "cilteq", 160 "tis", 161 "tiz", 162 "tinz", 163 "tbs", 164 "tbz", 165 "tbnz", 166 "tps", 167 "tpz", 168 "tpnz", 169 "peek", 170 "poke", 171 "bpeq", 172 "bpneq", 173 "bpa", 174 "bpaeq", 175 "bpb", 176 "bpbeq", 177 "bpgt", 178 "bpgteq", 179 "bplt", 180 "bplteq", 181 "addp", 182 "mulp", 183 "andp", 184 "orp", 185 "subp", 186 "xorp", 187 "loadp", 188 "cpeq", 189 "cpneq", 190 "cpa", 191 "cpaeq", 192 "cpb", 193 "cpbeq", 194 "cpgt", 195 "cpgteq", 196 "cplt", 197 "cplteq", 198 "storep", 199 "btps", 200 "btpz", 201 "btpnz", 202 "baddpo", 203 "baddps", 204 "baddpz", 205 "baddpnz", 206 "tqs", 207 "tqz", 208 "tqnz", 209 "peekq", 210 "pokeq", 211 "bqeq", 212 "bqneq", 213 "bqa", 214 "bqaeq", 215 "bqb", 216 "bqbeq", 217 "bqgt", 218 "bqgteq", 219 "bqlt", 220 "bqlteq", 221 "addq", 222 "mulq", 223 "andq", 224 "orq", 225 "subq", 226 "xorq", 227 "loadq", 228 "cqeq", 229 "cqneq", 230 "cqa", 231 "cqaeq", 232 "cqb", 233 "cqbeq", 234 "cqgt", 235 "cqgteq", 236 "cqlt", 237 "cqlteq", 238 "storeq", 239 "btqs", 240 "btqz", 241 "btqnz", 242 "baddqo", 243 "baddqs", 244 "baddqz", 245 "baddqnz", 246 "bo", 247 "bs", 248 "bz", 249 "bnz", 250 "leai", 251 "leap", 252 ] 253 254X86_INSTRUCTIONS = 255 [ 256 "cdqi", 257 "idivi", 258 "resetX87Stack" 259 ] 260 261ARM_INSTRUCTIONS = 262 [ 263 "smulli", 264 "addis", 265 "subis", 266 "oris" 267 ] 268 269MIPS_INSTRUCTIONS = 270 [ 271 "movz", 272 "movn", 273 "slt", 274 "sltu", 275 "pichdr", 276 "pichdrra" 277 ] 278 279SH4_INSTRUCTIONS = 280 [ 281 "shllx", 282 "shlrx", 283 "shld", 284 "shad", 285 "bdnan", 286 "loaddReversedAndIncrementAddress", 287 "storedReversedAndDecrementAddress", 288 "ldspr", 289 "stspr", 290 "callf", 291 "jmpf" 292 ] 293 294CXX_INSTRUCTIONS = 295 [ 296 "cloopCrash", # no operands 297 "cloopCallJSFunction", # operands: callee 298 "cloopCallNative", # operands: callee 299 "cloopCallSlowPath", # operands: callTarget, currentFrame, currentPC 300 301 # For debugging only: 302 # Takes no operands but simply emits whatever follows in // comments as 303 # a line of C++ code in the generated LLIntAssembly.h file. This can be 304 # used to insert instrumentation into the interpreter loop to inspect 305 # variables of interest. Do not leave these instructions in production 306 # code. 307 "cloopDo", # no operands 308 ] 309 310INSTRUCTIONS = MACRO_INSTRUCTIONS + X86_INSTRUCTIONS + ARM_INSTRUCTIONS + MIPS_INSTRUCTIONS + SH4_INSTRUCTIONS + CXX_INSTRUCTIONS 311 312INSTRUCTION_PATTERN = Regexp.new('\\A((' + INSTRUCTIONS.join(')|(') + '))\\Z') 313 314def isBranch(instruction) 315 instruction =~ /^b/ 316end 317 318def hasFallThrough(instruction) 319 instruction != "ret" and instruction != "jmp" 320end 321 322