1 // Copyright 2012 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "src/v8.h" 6 7 #include "src/ast.h" 8 #include "src/regexp-macro-assembler.h" 9 #include "src/regexp-macro-assembler-tracer.h" 10 11 namespace v8 { 12 namespace internal { 13 14 RegExpMacroAssemblerTracer::RegExpMacroAssemblerTracer( 15 RegExpMacroAssembler* assembler) : 16 RegExpMacroAssembler(assembler->zone()), 17 assembler_(assembler) { 18 unsigned int type = assembler->Implementation(); 19 DCHECK(type < 6); 20 const char* impl_names[] = {"IA32", "ARM", "ARM64", 21 "MIPS", "X64", "X87", "Bytecode"}; 22 PrintF("RegExpMacroAssembler%s();\n", impl_names[type]); 23 } 24 25 26 RegExpMacroAssemblerTracer::~RegExpMacroAssemblerTracer() { 27 } 28 29 30 // This is used for printing out debugging information. It makes an integer 31 // that is closely related to the address of an object. 32 static int LabelToInt(Label* label) { 33 return static_cast<int>(reinterpret_cast<intptr_t>(label)); 34 } 35 36 37 void RegExpMacroAssemblerTracer::Bind(Label* label) { 38 PrintF("label[%08x]: (Bind)\n", LabelToInt(label)); 39 assembler_->Bind(label); 40 } 41 42 43 void RegExpMacroAssemblerTracer::AdvanceCurrentPosition(int by) { 44 PrintF(" AdvanceCurrentPosition(by=%d);\n", by); 45 assembler_->AdvanceCurrentPosition(by); 46 } 47 48 49 void RegExpMacroAssemblerTracer::CheckGreedyLoop(Label* label) { 50 PrintF(" CheckGreedyLoop(label[%08x]);\n\n", LabelToInt(label)); 51 assembler_->CheckGreedyLoop(label); 52 } 53 54 55 void RegExpMacroAssemblerTracer::PopCurrentPosition() { 56 PrintF(" PopCurrentPosition();\n"); 57 assembler_->PopCurrentPosition(); 58 } 59 60 61 void RegExpMacroAssemblerTracer::PushCurrentPosition() { 62 PrintF(" PushCurrentPosition();\n"); 63 assembler_->PushCurrentPosition(); 64 } 65 66 67 void RegExpMacroAssemblerTracer::Backtrack() { 68 PrintF(" Backtrack();\n"); 69 assembler_->Backtrack(); 70 } 71 72 73 void RegExpMacroAssemblerTracer::GoTo(Label* label) { 74 PrintF(" GoTo(label[%08x]);\n\n", LabelToInt(label)); 75 assembler_->GoTo(label); 76 } 77 78 79 void RegExpMacroAssemblerTracer::PushBacktrack(Label* label) { 80 PrintF(" PushBacktrack(label[%08x]);\n", LabelToInt(label)); 81 assembler_->PushBacktrack(label); 82 } 83 84 85 bool RegExpMacroAssemblerTracer::Succeed() { 86 bool restart = assembler_->Succeed(); 87 PrintF(" Succeed();%s\n", restart ? " [restart for global match]" : ""); 88 return restart; 89 } 90 91 92 void RegExpMacroAssemblerTracer::Fail() { 93 PrintF(" Fail();"); 94 assembler_->Fail(); 95 } 96 97 98 void RegExpMacroAssemblerTracer::PopRegister(int register_index) { 99 PrintF(" PopRegister(register=%d);\n", register_index); 100 assembler_->PopRegister(register_index); 101 } 102 103 104 void RegExpMacroAssemblerTracer::PushRegister( 105 int register_index, 106 StackCheckFlag check_stack_limit) { 107 PrintF(" PushRegister(register=%d, %s);\n", 108 register_index, 109 check_stack_limit ? "check stack limit" : ""); 110 assembler_->PushRegister(register_index, check_stack_limit); 111 } 112 113 114 void RegExpMacroAssemblerTracer::AdvanceRegister(int reg, int by) { 115 PrintF(" AdvanceRegister(register=%d, by=%d);\n", reg, by); 116 assembler_->AdvanceRegister(reg, by); 117 } 118 119 120 void RegExpMacroAssemblerTracer::SetCurrentPositionFromEnd(int by) { 121 PrintF(" SetCurrentPositionFromEnd(by=%d);\n", by); 122 assembler_->SetCurrentPositionFromEnd(by); 123 } 124 125 126 void RegExpMacroAssemblerTracer::SetRegister(int register_index, int to) { 127 PrintF(" SetRegister(register=%d, to=%d);\n", register_index, to); 128 assembler_->SetRegister(register_index, to); 129 } 130 131 132 void RegExpMacroAssemblerTracer::WriteCurrentPositionToRegister(int reg, 133 int cp_offset) { 134 PrintF(" WriteCurrentPositionToRegister(register=%d,cp_offset=%d);\n", 135 reg, 136 cp_offset); 137 assembler_->WriteCurrentPositionToRegister(reg, cp_offset); 138 } 139 140 141 void RegExpMacroAssemblerTracer::ClearRegisters(int reg_from, int reg_to) { 142 PrintF(" ClearRegister(from=%d, to=%d);\n", reg_from, reg_to); 143 assembler_->ClearRegisters(reg_from, reg_to); 144 } 145 146 147 void RegExpMacroAssemblerTracer::ReadCurrentPositionFromRegister(int reg) { 148 PrintF(" ReadCurrentPositionFromRegister(register=%d);\n", reg); 149 assembler_->ReadCurrentPositionFromRegister(reg); 150 } 151 152 153 void RegExpMacroAssemblerTracer::WriteStackPointerToRegister(int reg) { 154 PrintF(" WriteStackPointerToRegister(register=%d);\n", reg); 155 assembler_->WriteStackPointerToRegister(reg); 156 } 157 158 159 void RegExpMacroAssemblerTracer::ReadStackPointerFromRegister(int reg) { 160 PrintF(" ReadStackPointerFromRegister(register=%d);\n", reg); 161 assembler_->ReadStackPointerFromRegister(reg); 162 } 163 164 165 void RegExpMacroAssemblerTracer::LoadCurrentCharacter(int cp_offset, 166 Label* on_end_of_input, 167 bool check_bounds, 168 int characters) { 169 const char* check_msg = check_bounds ? "" : " (unchecked)"; 170 PrintF(" LoadCurrentCharacter(cp_offset=%d, label[%08x]%s (%d chars));\n", 171 cp_offset, 172 LabelToInt(on_end_of_input), 173 check_msg, 174 characters); 175 assembler_->LoadCurrentCharacter(cp_offset, 176 on_end_of_input, 177 check_bounds, 178 characters); 179 } 180 181 182 class PrintablePrinter { 183 public: 184 explicit PrintablePrinter(uc16 character) : character_(character) { } 185 186 const char* operator*() { 187 if (character_ >= ' ' && character_ <= '~') { 188 buffer_[0] = '('; 189 buffer_[1] = static_cast<char>(character_); 190 buffer_[2] = ')'; 191 buffer_[3] = '\0'; 192 } else { 193 buffer_[0] = '\0'; 194 } 195 return &buffer_[0]; 196 } 197 198 private: 199 uc16 character_; 200 char buffer_[4]; 201 }; 202 203 204 void RegExpMacroAssemblerTracer::CheckCharacterLT(uc16 limit, Label* on_less) { 205 PrintablePrinter printable(limit); 206 PrintF(" CheckCharacterLT(c=0x%04x%s, label[%08x]);\n", 207 limit, 208 *printable, 209 LabelToInt(on_less)); 210 assembler_->CheckCharacterLT(limit, on_less); 211 } 212 213 214 void RegExpMacroAssemblerTracer::CheckCharacterGT(uc16 limit, 215 Label* on_greater) { 216 PrintablePrinter printable(limit); 217 PrintF(" CheckCharacterGT(c=0x%04x%s, label[%08x]);\n", 218 limit, 219 *printable, 220 LabelToInt(on_greater)); 221 assembler_->CheckCharacterGT(limit, on_greater); 222 } 223 224 225 void RegExpMacroAssemblerTracer::CheckCharacter(unsigned c, Label* on_equal) { 226 PrintablePrinter printable(c); 227 PrintF(" CheckCharacter(c=0x%04x%s, label[%08x]);\n", 228 c, 229 *printable, 230 LabelToInt(on_equal)); 231 assembler_->CheckCharacter(c, on_equal); 232 } 233 234 235 void RegExpMacroAssemblerTracer::CheckAtStart(Label* on_at_start) { 236 PrintF(" CheckAtStart(label[%08x]);\n", LabelToInt(on_at_start)); 237 assembler_->CheckAtStart(on_at_start); 238 } 239 240 241 void RegExpMacroAssemblerTracer::CheckNotAtStart(Label* on_not_at_start) { 242 PrintF(" CheckNotAtStart(label[%08x]);\n", LabelToInt(on_not_at_start)); 243 assembler_->CheckNotAtStart(on_not_at_start); 244 } 245 246 247 void RegExpMacroAssemblerTracer::CheckNotCharacter(unsigned c, 248 Label* on_not_equal) { 249 PrintablePrinter printable(c); 250 PrintF(" CheckNotCharacter(c=0x%04x%s, label[%08x]);\n", 251 c, 252 *printable, 253 LabelToInt(on_not_equal)); 254 assembler_->CheckNotCharacter(c, on_not_equal); 255 } 256 257 258 void RegExpMacroAssemblerTracer::CheckCharacterAfterAnd( 259 unsigned c, 260 unsigned mask, 261 Label* on_equal) { 262 PrintablePrinter printable(c); 263 PrintF(" CheckCharacterAfterAnd(c=0x%04x%s, mask=0x%04x, label[%08x]);\n", 264 c, 265 *printable, 266 mask, 267 LabelToInt(on_equal)); 268 assembler_->CheckCharacterAfterAnd(c, mask, on_equal); 269 } 270 271 272 void RegExpMacroAssemblerTracer::CheckNotCharacterAfterAnd( 273 unsigned c, 274 unsigned mask, 275 Label* on_not_equal) { 276 PrintablePrinter printable(c); 277 PrintF(" CheckNotCharacterAfterAnd(c=0x%04x%s, mask=0x%04x, label[%08x]);\n", 278 c, 279 *printable, 280 mask, 281 LabelToInt(on_not_equal)); 282 assembler_->CheckNotCharacterAfterAnd(c, mask, on_not_equal); 283 } 284 285 286 void RegExpMacroAssemblerTracer::CheckNotCharacterAfterMinusAnd( 287 uc16 c, 288 uc16 minus, 289 uc16 mask, 290 Label* on_not_equal) { 291 PrintF(" CheckNotCharacterAfterMinusAnd(c=0x%04x, minus=%04x, mask=0x%04x, " 292 "label[%08x]);\n", 293 c, 294 minus, 295 mask, 296 LabelToInt(on_not_equal)); 297 assembler_->CheckNotCharacterAfterMinusAnd(c, minus, mask, on_not_equal); 298 } 299 300 301 void RegExpMacroAssemblerTracer::CheckCharacterInRange( 302 uc16 from, 303 uc16 to, 304 Label* on_not_in_range) { 305 PrintablePrinter printable_from(from); 306 PrintablePrinter printable_to(to); 307 PrintF(" CheckCharacterInRange(from=0x%04x%s, to=0x%04x%s, label[%08x]);\n", 308 from, 309 *printable_from, 310 to, 311 *printable_to, 312 LabelToInt(on_not_in_range)); 313 assembler_->CheckCharacterInRange(from, to, on_not_in_range); 314 } 315 316 317 void RegExpMacroAssemblerTracer::CheckCharacterNotInRange( 318 uc16 from, 319 uc16 to, 320 Label* on_in_range) { 321 PrintablePrinter printable_from(from); 322 PrintablePrinter printable_to(to); 323 PrintF( 324 " CheckCharacterNotInRange(from=0x%04x%s," " to=%04x%s, label[%08x]);\n", 325 from, 326 *printable_from, 327 to, 328 *printable_to, 329 LabelToInt(on_in_range)); 330 assembler_->CheckCharacterNotInRange(from, to, on_in_range); 331 } 332 333 334 void RegExpMacroAssemblerTracer::CheckBitInTable( 335 Handle<ByteArray> table, Label* on_bit_set) { 336 PrintF(" CheckBitInTable(label[%08x] ", LabelToInt(on_bit_set)); 337 for (int i = 0; i < kTableSize; i++) { 338 PrintF("%c", table->get(i) != 0 ? 'X' : '.'); 339 if (i % 32 == 31 && i != kTableMask) { 340 PrintF("\n "); 341 } 342 } 343 PrintF(");\n"); 344 assembler_->CheckBitInTable(table, on_bit_set); 345 } 346 347 348 void RegExpMacroAssemblerTracer::CheckNotBackReference(int start_reg, 349 Label* on_no_match) { 350 PrintF(" CheckNotBackReference(register=%d, label[%08x]);\n", start_reg, 351 LabelToInt(on_no_match)); 352 assembler_->CheckNotBackReference(start_reg, on_no_match); 353 } 354 355 356 void RegExpMacroAssemblerTracer::CheckNotBackReferenceIgnoreCase( 357 int start_reg, 358 Label* on_no_match) { 359 PrintF(" CheckNotBackReferenceIgnoreCase(register=%d, label[%08x]);\n", 360 start_reg, LabelToInt(on_no_match)); 361 assembler_->CheckNotBackReferenceIgnoreCase(start_reg, on_no_match); 362 } 363 364 365 bool RegExpMacroAssemblerTracer::CheckSpecialCharacterClass( 366 uc16 type, 367 Label* on_no_match) { 368 bool supported = assembler_->CheckSpecialCharacterClass(type, 369 on_no_match); 370 PrintF(" CheckSpecialCharacterClass(type='%c', label[%08x]): %s;\n", 371 type, 372 LabelToInt(on_no_match), 373 supported ? "true" : "false"); 374 return supported; 375 } 376 377 378 void RegExpMacroAssemblerTracer::IfRegisterLT(int register_index, 379 int comparand, Label* if_lt) { 380 PrintF(" IfRegisterLT(register=%d, number=%d, label[%08x]);\n", 381 register_index, comparand, LabelToInt(if_lt)); 382 assembler_->IfRegisterLT(register_index, comparand, if_lt); 383 } 384 385 386 void RegExpMacroAssemblerTracer::IfRegisterEqPos(int register_index, 387 Label* if_eq) { 388 PrintF(" IfRegisterEqPos(register=%d, label[%08x]);\n", 389 register_index, LabelToInt(if_eq)); 390 assembler_->IfRegisterEqPos(register_index, if_eq); 391 } 392 393 394 void RegExpMacroAssemblerTracer::IfRegisterGE(int register_index, 395 int comparand, Label* if_ge) { 396 PrintF(" IfRegisterGE(register=%d, number=%d, label[%08x]);\n", 397 register_index, comparand, LabelToInt(if_ge)); 398 assembler_->IfRegisterGE(register_index, comparand, if_ge); 399 } 400 401 402 RegExpMacroAssembler::IrregexpImplementation 403 RegExpMacroAssemblerTracer::Implementation() { 404 return assembler_->Implementation(); 405 } 406 407 408 Handle<HeapObject> RegExpMacroAssemblerTracer::GetCode(Handle<String> source) { 409 PrintF(" GetCode(%s);\n", source->ToCString().get()); 410 return assembler_->GetCode(source); 411 } 412 413 }} // namespace v8::internal 414