sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1 | // Copyright 2009 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "codegen-inl.h" |
| 31 | #include "compiler.h" |
| 32 | #include "debug.h" |
| 33 | #include "full-codegen.h" |
| 34 | #include "parser.h" |
sgjesse@chromium.org | 833cdd7 | 2010-02-26 10:06:16 +0000 | [diff] [blame] | 35 | #include "scopes.h" |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 36 | |
| 37 | namespace v8 { |
| 38 | namespace internal { |
| 39 | |
| 40 | #define __ ACCESS_MASM(masm_) |
| 41 | |
| 42 | // Generate code for a JS function. On entry to the function the receiver |
| 43 | // and arguments have been pushed on the stack left to right, with the |
| 44 | // return address on top of them. The actual argument count matches the |
| 45 | // formal parameter count expected by the function. |
| 46 | // |
| 47 | // The live registers are: |
| 48 | // o edi: the JS function object being called (ie, ourselves) |
| 49 | // o esi: our context |
| 50 | // o ebp: our caller's frame pointer |
| 51 | // o esp: stack pointer (pointing to return address) |
| 52 | // |
| 53 | // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 54 | // frames-ia32.h for its layout. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 55 | void FullCodeGenerator::Generate(CompilationInfo* info, Mode mode) { |
| 56 | ASSERT(info_ == NULL); |
| 57 | info_ = info; |
| 58 | SetFunctionPosition(function()); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 59 | Comment cmnt(masm_, "[ function compiled by full code generator"); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 60 | |
| 61 | if (mode == PRIMARY) { |
| 62 | __ push(ebp); // Caller's frame pointer. |
| 63 | __ mov(ebp, esp); |
| 64 | __ push(esi); // Callee's context. |
| 65 | __ push(edi); // Callee's JS Function. |
| 66 | |
| 67 | { Comment cmnt(masm_, "[ Allocate locals"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 68 | int locals_count = scope()->num_stack_slots(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 69 | if (locals_count == 1) { |
| 70 | __ push(Immediate(Factory::undefined_value())); |
| 71 | } else if (locals_count > 1) { |
| 72 | __ mov(eax, Immediate(Factory::undefined_value())); |
| 73 | for (int i = 0; i < locals_count; i++) { |
| 74 | __ push(eax); |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | bool function_in_register = true; |
| 80 | |
| 81 | // Possibly allocate a local context. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 82 | if (scope()->num_heap_slots() > 0) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 83 | Comment cmnt(masm_, "[ Allocate local context"); |
| 84 | // Argument to NewContext is the function, which is still in edi. |
| 85 | __ push(edi); |
| 86 | __ CallRuntime(Runtime::kNewContext, 1); |
| 87 | function_in_register = false; |
| 88 | // Context is returned in both eax and esi. It replaces the context |
| 89 | // passed to us. It's saved in the stack and kept live in esi. |
| 90 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), esi); |
| 91 | |
| 92 | // Copy parameters into context if necessary. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 93 | int num_parameters = scope()->num_parameters(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 94 | for (int i = 0; i < num_parameters; i++) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 95 | Slot* slot = scope()->parameter(i)->slot(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 96 | if (slot != NULL && slot->type() == Slot::CONTEXT) { |
| 97 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 98 | (num_parameters - 1 - i) * kPointerSize; |
| 99 | // Load parameter from stack. |
| 100 | __ mov(eax, Operand(ebp, parameter_offset)); |
| 101 | // Store it in the context. |
| 102 | int context_offset = Context::SlotOffset(slot->index()); |
| 103 | __ mov(Operand(esi, context_offset), eax); |
| 104 | // Update the write barrier. This clobbers all involved |
| 105 | // registers, so we have use a third register to avoid |
| 106 | // clobbering esi. |
| 107 | __ mov(ecx, esi); |
| 108 | __ RecordWrite(ecx, context_offset, eax, ebx); |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 113 | Variable* arguments = scope()->arguments()->AsVariable(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 114 | if (arguments != NULL) { |
| 115 | // Function uses arguments object. |
| 116 | Comment cmnt(masm_, "[ Allocate arguments object"); |
| 117 | if (function_in_register) { |
| 118 | __ push(edi); |
| 119 | } else { |
| 120 | __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 121 | } |
| 122 | // Receiver is just before the parameters on the caller's stack. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 123 | int offset = scope()->num_parameters() * kPointerSize; |
| 124 | __ lea(edx, |
| 125 | Operand(ebp, StandardFrameConstants::kCallerSPOffset + offset)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 126 | __ push(edx); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 127 | __ push(Immediate(Smi::FromInt(scope()->num_parameters()))); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 128 | // Arguments to ArgumentsAccessStub: |
| 129 | // function, receiver address, parameter count. |
| 130 | // The stub will rewrite receiver and parameter count if the previous |
| 131 | // stack frame was an arguments adapter frame. |
| 132 | ArgumentsAccessStub stub(ArgumentsAccessStub::NEW_OBJECT); |
| 133 | __ CallStub(&stub); |
| 134 | __ mov(ecx, eax); // Duplicate result. |
| 135 | Move(arguments->slot(), eax, ebx, edx); |
| 136 | Slot* dot_arguments_slot = |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 137 | scope()->arguments_shadow()->AsVariable()->slot(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 138 | Move(dot_arguments_slot, ecx, ebx, edx); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | { Comment cmnt(masm_, "[ Declarations"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 143 | VisitDeclarations(scope()->declarations()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | { Comment cmnt(masm_, "[ Stack check"); |
| 147 | Label ok; |
| 148 | ExternalReference stack_limit = |
| 149 | ExternalReference::address_of_stack_limit(); |
| 150 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 151 | __ j(above_equal, &ok, taken); |
| 152 | StackCheckStub stub; |
| 153 | __ CallStub(&stub); |
| 154 | __ bind(&ok); |
| 155 | } |
| 156 | |
| 157 | if (FLAG_trace) { |
| 158 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 159 | } |
| 160 | |
| 161 | { Comment cmnt(masm_, "[ Body"); |
| 162 | ASSERT(loop_depth() == 0); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 163 | VisitStatements(function()->body()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 164 | ASSERT(loop_depth() == 0); |
| 165 | } |
| 166 | |
| 167 | { Comment cmnt(masm_, "[ return <undefined>;"); |
| 168 | // Emit a 'return undefined' in case control fell off the end of the body. |
| 169 | __ mov(eax, Factory::undefined_value()); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 170 | EmitReturnSequence(function()->end_position()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 171 | } |
| 172 | } |
| 173 | |
| 174 | |
| 175 | void FullCodeGenerator::EmitReturnSequence(int position) { |
| 176 | Comment cmnt(masm_, "[ Return sequence"); |
| 177 | if (return_label_.is_bound()) { |
| 178 | __ jmp(&return_label_); |
| 179 | } else { |
| 180 | // Common return label |
| 181 | __ bind(&return_label_); |
| 182 | if (FLAG_trace) { |
| 183 | __ push(eax); |
| 184 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 185 | } |
| 186 | #ifdef DEBUG |
| 187 | // Add a label for checking the size of the code used for returning. |
| 188 | Label check_exit_codesize; |
| 189 | masm_->bind(&check_exit_codesize); |
| 190 | #endif |
| 191 | CodeGenerator::RecordPositions(masm_, position); |
| 192 | __ RecordJSReturn(); |
| 193 | // Do not use the leave instruction here because it is too short to |
| 194 | // patch with the code required by the debugger. |
| 195 | __ mov(esp, ebp); |
| 196 | __ pop(ebp); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 197 | __ ret((scope()->num_parameters() + 1) * kPointerSize); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 198 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 199 | // Check that the size of the code used for returning matches what is |
| 200 | // expected by the debugger. |
| 201 | ASSERT_EQ(Assembler::kJSReturnSequenceLength, |
| 202 | masm_->SizeOfCodeGeneratedSince(&check_exit_codesize)); |
| 203 | #endif |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | |
| 208 | void FullCodeGenerator::Apply(Expression::Context context, Register reg) { |
| 209 | switch (context) { |
| 210 | case Expression::kUninitialized: |
| 211 | UNREACHABLE(); |
| 212 | |
| 213 | case Expression::kEffect: |
| 214 | // Nothing to do. |
| 215 | break; |
| 216 | |
| 217 | case Expression::kValue: |
| 218 | // Move value into place. |
| 219 | switch (location_) { |
| 220 | case kAccumulator: |
| 221 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 222 | break; |
| 223 | case kStack: |
| 224 | __ push(reg); |
| 225 | break; |
| 226 | } |
| 227 | break; |
| 228 | |
| 229 | case Expression::kTest: |
| 230 | // For simplicity we always test the accumulator register. |
| 231 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 232 | DoTest(context); |
| 233 | break; |
| 234 | |
| 235 | case Expression::kValueTest: |
| 236 | case Expression::kTestValue: |
| 237 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 238 | switch (location_) { |
| 239 | case kAccumulator: |
| 240 | break; |
| 241 | case kStack: |
| 242 | __ push(result_register()); |
| 243 | break; |
| 244 | } |
| 245 | DoTest(context); |
| 246 | break; |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | |
| 251 | void FullCodeGenerator::Apply(Expression::Context context, Slot* slot) { |
| 252 | switch (context) { |
| 253 | case Expression::kUninitialized: |
| 254 | UNREACHABLE(); |
| 255 | case Expression::kEffect: |
| 256 | // Nothing to do. |
| 257 | break; |
| 258 | case Expression::kValue: { |
| 259 | MemOperand slot_operand = EmitSlotSearch(slot, result_register()); |
| 260 | switch (location_) { |
| 261 | case kAccumulator: |
| 262 | __ mov(result_register(), slot_operand); |
| 263 | break; |
| 264 | case kStack: |
| 265 | // Memory operands can be pushed directly. |
| 266 | __ push(slot_operand); |
| 267 | break; |
| 268 | } |
| 269 | break; |
| 270 | } |
| 271 | |
| 272 | case Expression::kTest: |
| 273 | // For simplicity we always test the accumulator register. |
| 274 | Move(result_register(), slot); |
| 275 | DoTest(context); |
| 276 | break; |
| 277 | |
| 278 | case Expression::kValueTest: |
| 279 | case Expression::kTestValue: |
| 280 | Move(result_register(), slot); |
| 281 | switch (location_) { |
| 282 | case kAccumulator: |
| 283 | break; |
| 284 | case kStack: |
| 285 | __ push(result_register()); |
| 286 | break; |
| 287 | } |
| 288 | DoTest(context); |
| 289 | break; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | |
| 294 | void FullCodeGenerator::Apply(Expression::Context context, Literal* lit) { |
| 295 | switch (context) { |
| 296 | case Expression::kUninitialized: |
| 297 | UNREACHABLE(); |
| 298 | case Expression::kEffect: |
| 299 | // Nothing to do. |
| 300 | break; |
| 301 | case Expression::kValue: |
| 302 | switch (location_) { |
| 303 | case kAccumulator: |
| 304 | __ mov(result_register(), lit->handle()); |
| 305 | break; |
| 306 | case kStack: |
| 307 | // Immediates can be pushed directly. |
| 308 | __ push(Immediate(lit->handle())); |
| 309 | break; |
| 310 | } |
| 311 | break; |
| 312 | |
| 313 | case Expression::kTest: |
| 314 | // For simplicity we always test the accumulator register. |
| 315 | __ mov(result_register(), lit->handle()); |
| 316 | DoTest(context); |
| 317 | break; |
| 318 | |
| 319 | case Expression::kValueTest: |
| 320 | case Expression::kTestValue: |
| 321 | __ mov(result_register(), lit->handle()); |
| 322 | switch (location_) { |
| 323 | case kAccumulator: |
| 324 | break; |
| 325 | case kStack: |
| 326 | __ push(result_register()); |
| 327 | break; |
| 328 | } |
| 329 | DoTest(context); |
| 330 | break; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | |
| 335 | void FullCodeGenerator::ApplyTOS(Expression::Context context) { |
| 336 | switch (context) { |
| 337 | case Expression::kUninitialized: |
| 338 | UNREACHABLE(); |
| 339 | |
| 340 | case Expression::kEffect: |
| 341 | __ Drop(1); |
| 342 | break; |
| 343 | |
| 344 | case Expression::kValue: |
| 345 | switch (location_) { |
| 346 | case kAccumulator: |
| 347 | __ pop(result_register()); |
| 348 | break; |
| 349 | case kStack: |
| 350 | break; |
| 351 | } |
| 352 | break; |
| 353 | |
| 354 | case Expression::kTest: |
| 355 | // For simplicity we always test the accumulator register. |
| 356 | __ pop(result_register()); |
| 357 | DoTest(context); |
| 358 | break; |
| 359 | |
| 360 | case Expression::kValueTest: |
| 361 | case Expression::kTestValue: |
| 362 | switch (location_) { |
| 363 | case kAccumulator: |
| 364 | __ pop(result_register()); |
| 365 | break; |
| 366 | case kStack: |
| 367 | __ mov(result_register(), Operand(esp, 0)); |
| 368 | break; |
| 369 | } |
| 370 | DoTest(context); |
| 371 | break; |
| 372 | } |
| 373 | } |
| 374 | |
| 375 | |
| 376 | void FullCodeGenerator::DropAndApply(int count, |
| 377 | Expression::Context context, |
| 378 | Register reg) { |
| 379 | ASSERT(count > 0); |
| 380 | ASSERT(!reg.is(esp)); |
| 381 | switch (context) { |
| 382 | case Expression::kUninitialized: |
| 383 | UNREACHABLE(); |
| 384 | |
| 385 | case Expression::kEffect: |
| 386 | __ Drop(count); |
| 387 | break; |
| 388 | |
| 389 | case Expression::kValue: |
| 390 | switch (location_) { |
| 391 | case kAccumulator: |
| 392 | __ Drop(count); |
| 393 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 394 | break; |
| 395 | case kStack: |
| 396 | if (count > 1) __ Drop(count - 1); |
| 397 | __ mov(Operand(esp, 0), reg); |
| 398 | break; |
| 399 | } |
| 400 | break; |
| 401 | |
| 402 | case Expression::kTest: |
| 403 | // For simplicity we always test the accumulator register. |
| 404 | __ Drop(count); |
| 405 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 406 | DoTest(context); |
| 407 | break; |
| 408 | |
| 409 | case Expression::kValueTest: |
| 410 | case Expression::kTestValue: |
| 411 | switch (location_) { |
| 412 | case kAccumulator: |
| 413 | __ Drop(count); |
| 414 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 415 | break; |
| 416 | case kStack: |
| 417 | if (count > 1) __ Drop(count - 1); |
| 418 | __ mov(result_register(), reg); |
| 419 | __ mov(Operand(esp, 0), result_register()); |
| 420 | break; |
| 421 | } |
| 422 | DoTest(context); |
| 423 | break; |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | |
| 428 | void FullCodeGenerator::Apply(Expression::Context context, |
| 429 | Label* materialize_true, |
| 430 | Label* materialize_false) { |
| 431 | switch (context) { |
| 432 | case Expression::kUninitialized: |
| 433 | |
| 434 | case Expression::kEffect: |
| 435 | ASSERT_EQ(materialize_true, materialize_false); |
| 436 | __ bind(materialize_true); |
| 437 | break; |
| 438 | |
| 439 | case Expression::kValue: { |
| 440 | Label done; |
| 441 | switch (location_) { |
| 442 | case kAccumulator: |
| 443 | __ bind(materialize_true); |
| 444 | __ mov(result_register(), Factory::true_value()); |
| 445 | __ jmp(&done); |
| 446 | __ bind(materialize_false); |
| 447 | __ mov(result_register(), Factory::false_value()); |
| 448 | break; |
| 449 | case kStack: |
| 450 | __ bind(materialize_true); |
| 451 | __ push(Immediate(Factory::true_value())); |
| 452 | __ jmp(&done); |
| 453 | __ bind(materialize_false); |
| 454 | __ push(Immediate(Factory::false_value())); |
| 455 | break; |
| 456 | } |
| 457 | __ bind(&done); |
| 458 | break; |
| 459 | } |
| 460 | |
| 461 | case Expression::kTest: |
| 462 | break; |
| 463 | |
| 464 | case Expression::kValueTest: |
| 465 | __ bind(materialize_true); |
| 466 | switch (location_) { |
| 467 | case kAccumulator: |
| 468 | __ mov(result_register(), Factory::true_value()); |
| 469 | break; |
| 470 | case kStack: |
| 471 | __ push(Immediate(Factory::true_value())); |
| 472 | break; |
| 473 | } |
| 474 | __ jmp(true_label_); |
| 475 | break; |
| 476 | |
| 477 | case Expression::kTestValue: |
| 478 | __ bind(materialize_false); |
| 479 | switch (location_) { |
| 480 | case kAccumulator: |
| 481 | __ mov(result_register(), Factory::false_value()); |
| 482 | break; |
| 483 | case kStack: |
| 484 | __ push(Immediate(Factory::false_value())); |
| 485 | break; |
| 486 | } |
| 487 | __ jmp(false_label_); |
| 488 | break; |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | |
| 493 | void FullCodeGenerator::DoTest(Expression::Context context) { |
| 494 | // The value to test is in the accumulator. If the value might be needed |
| 495 | // on the stack (value/test and test/value contexts with a stack location |
| 496 | // desired), then the value is already duplicated on the stack. |
| 497 | ASSERT_NE(NULL, true_label_); |
| 498 | ASSERT_NE(NULL, false_label_); |
| 499 | |
| 500 | // In value/test and test/value expression contexts with stack as the |
| 501 | // desired location, there is already an extra value on the stack. Use a |
| 502 | // label to discard it if unneeded. |
| 503 | Label discard; |
| 504 | Label* if_true = true_label_; |
| 505 | Label* if_false = false_label_; |
| 506 | switch (context) { |
| 507 | case Expression::kUninitialized: |
| 508 | case Expression::kEffect: |
| 509 | case Expression::kValue: |
| 510 | UNREACHABLE(); |
| 511 | case Expression::kTest: |
| 512 | break; |
| 513 | case Expression::kValueTest: |
| 514 | switch (location_) { |
| 515 | case kAccumulator: |
| 516 | break; |
| 517 | case kStack: |
| 518 | if_false = &discard; |
| 519 | break; |
| 520 | } |
| 521 | break; |
| 522 | case Expression::kTestValue: |
| 523 | switch (location_) { |
| 524 | case kAccumulator: |
| 525 | break; |
| 526 | case kStack: |
| 527 | if_true = &discard; |
| 528 | break; |
| 529 | } |
| 530 | break; |
| 531 | } |
| 532 | |
| 533 | // Emit the inlined tests assumed by the stub. |
| 534 | __ cmp(result_register(), Factory::undefined_value()); |
| 535 | __ j(equal, if_false); |
| 536 | __ cmp(result_register(), Factory::true_value()); |
| 537 | __ j(equal, if_true); |
| 538 | __ cmp(result_register(), Factory::false_value()); |
| 539 | __ j(equal, if_false); |
| 540 | ASSERT_EQ(0, kSmiTag); |
| 541 | __ test(result_register(), Operand(result_register())); |
| 542 | __ j(zero, if_false); |
| 543 | __ test(result_register(), Immediate(kSmiTagMask)); |
| 544 | __ j(zero, if_true); |
| 545 | |
| 546 | // Save a copy of the value if it may be needed and isn't already saved. |
| 547 | switch (context) { |
| 548 | case Expression::kUninitialized: |
| 549 | case Expression::kEffect: |
| 550 | case Expression::kValue: |
| 551 | UNREACHABLE(); |
| 552 | case Expression::kTest: |
| 553 | break; |
| 554 | case Expression::kValueTest: |
| 555 | switch (location_) { |
| 556 | case kAccumulator: |
| 557 | __ push(result_register()); |
| 558 | break; |
| 559 | case kStack: |
| 560 | break; |
| 561 | } |
| 562 | break; |
| 563 | case Expression::kTestValue: |
| 564 | switch (location_) { |
| 565 | case kAccumulator: |
| 566 | __ push(result_register()); |
| 567 | break; |
| 568 | case kStack: |
| 569 | break; |
| 570 | } |
| 571 | break; |
| 572 | } |
| 573 | |
| 574 | // Call the ToBoolean stub for all other cases. |
| 575 | ToBooleanStub stub; |
| 576 | __ push(result_register()); |
| 577 | __ CallStub(&stub); |
| 578 | __ test(eax, Operand(eax)); |
| 579 | |
| 580 | // The stub returns nonzero for true. Complete based on the context. |
| 581 | switch (context) { |
| 582 | case Expression::kUninitialized: |
| 583 | case Expression::kEffect: |
| 584 | case Expression::kValue: |
| 585 | UNREACHABLE(); |
| 586 | |
| 587 | case Expression::kTest: |
| 588 | __ j(not_zero, true_label_); |
| 589 | __ jmp(false_label_); |
| 590 | break; |
| 591 | |
| 592 | case Expression::kValueTest: |
| 593 | switch (location_) { |
| 594 | case kAccumulator: |
| 595 | __ j(zero, &discard); |
| 596 | __ pop(result_register()); |
| 597 | __ jmp(true_label_); |
| 598 | break; |
| 599 | case kStack: |
| 600 | __ j(not_zero, true_label_); |
| 601 | break; |
| 602 | } |
| 603 | __ bind(&discard); |
| 604 | __ Drop(1); |
| 605 | __ jmp(false_label_); |
| 606 | break; |
| 607 | |
| 608 | case Expression::kTestValue: |
| 609 | switch (location_) { |
| 610 | case kAccumulator: |
| 611 | __ j(not_zero, &discard); |
| 612 | __ pop(result_register()); |
| 613 | __ jmp(false_label_); |
| 614 | break; |
| 615 | case kStack: |
| 616 | __ j(zero, false_label_); |
| 617 | break; |
| 618 | } |
| 619 | __ bind(&discard); |
| 620 | __ Drop(1); |
| 621 | __ jmp(true_label_); |
| 622 | break; |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | |
| 627 | MemOperand FullCodeGenerator::EmitSlotSearch(Slot* slot, Register scratch) { |
| 628 | switch (slot->type()) { |
| 629 | case Slot::PARAMETER: |
| 630 | case Slot::LOCAL: |
| 631 | return Operand(ebp, SlotOffset(slot)); |
| 632 | case Slot::CONTEXT: { |
| 633 | int context_chain_length = |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 634 | scope()->ContextChainLength(slot->var()->scope()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 635 | __ LoadContext(scratch, context_chain_length); |
| 636 | return CodeGenerator::ContextOperand(scratch, slot->index()); |
| 637 | } |
| 638 | case Slot::LOOKUP: |
| 639 | UNREACHABLE(); |
| 640 | } |
| 641 | UNREACHABLE(); |
| 642 | return Operand(eax, 0); |
| 643 | } |
| 644 | |
| 645 | |
| 646 | void FullCodeGenerator::Move(Register destination, Slot* source) { |
| 647 | MemOperand location = EmitSlotSearch(source, destination); |
| 648 | __ mov(destination, location); |
| 649 | } |
| 650 | |
| 651 | |
| 652 | void FullCodeGenerator::Move(Slot* dst, |
| 653 | Register src, |
| 654 | Register scratch1, |
| 655 | Register scratch2) { |
| 656 | ASSERT(dst->type() != Slot::LOOKUP); // Not yet implemented. |
| 657 | ASSERT(!scratch1.is(src) && !scratch2.is(src)); |
| 658 | MemOperand location = EmitSlotSearch(dst, scratch1); |
| 659 | __ mov(location, src); |
| 660 | // Emit the write barrier code if the location is in the heap. |
| 661 | if (dst->type() == Slot::CONTEXT) { |
| 662 | int offset = FixedArray::kHeaderSize + dst->index() * kPointerSize; |
| 663 | __ RecordWrite(scratch1, offset, src, scratch2); |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | |
| 668 | void FullCodeGenerator::VisitDeclaration(Declaration* decl) { |
| 669 | Comment cmnt(masm_, "[ Declaration"); |
| 670 | Variable* var = decl->proxy()->var(); |
| 671 | ASSERT(var != NULL); // Must have been resolved. |
| 672 | Slot* slot = var->slot(); |
| 673 | Property* prop = var->AsProperty(); |
| 674 | |
| 675 | if (slot != NULL) { |
| 676 | switch (slot->type()) { |
| 677 | case Slot::PARAMETER: |
| 678 | case Slot::LOCAL: |
| 679 | if (decl->mode() == Variable::CONST) { |
| 680 | __ mov(Operand(ebp, SlotOffset(slot)), |
| 681 | Immediate(Factory::the_hole_value())); |
| 682 | } else if (decl->fun() != NULL) { |
| 683 | VisitForValue(decl->fun(), kAccumulator); |
| 684 | __ mov(Operand(ebp, SlotOffset(slot)), result_register()); |
| 685 | } |
| 686 | break; |
| 687 | |
| 688 | case Slot::CONTEXT: |
| 689 | // We bypass the general EmitSlotSearch because we know more about |
| 690 | // this specific context. |
| 691 | |
| 692 | // The variable in the decl always resides in the current context. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 693 | ASSERT_EQ(0, scope()->ContextChainLength(var->scope())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 694 | if (FLAG_debug_code) { |
| 695 | // Check if we have the correct context pointer. |
| 696 | __ mov(ebx, |
| 697 | CodeGenerator::ContextOperand(esi, Context::FCONTEXT_INDEX)); |
| 698 | __ cmp(ebx, Operand(esi)); |
| 699 | __ Check(equal, "Unexpected declaration in current context."); |
| 700 | } |
| 701 | if (decl->mode() == Variable::CONST) { |
| 702 | __ mov(eax, Immediate(Factory::the_hole_value())); |
| 703 | __ mov(CodeGenerator::ContextOperand(esi, slot->index()), eax); |
| 704 | // No write barrier since the hole value is in old space. |
| 705 | } else if (decl->fun() != NULL) { |
| 706 | VisitForValue(decl->fun(), kAccumulator); |
| 707 | __ mov(CodeGenerator::ContextOperand(esi, slot->index()), |
| 708 | result_register()); |
| 709 | int offset = Context::SlotOffset(slot->index()); |
| 710 | __ mov(ebx, esi); |
| 711 | __ RecordWrite(ebx, offset, result_register(), ecx); |
| 712 | } |
| 713 | break; |
| 714 | |
| 715 | case Slot::LOOKUP: { |
| 716 | __ push(esi); |
| 717 | __ push(Immediate(var->name())); |
| 718 | // Declaration nodes are always introduced in one of two modes. |
| 719 | ASSERT(decl->mode() == Variable::VAR || |
| 720 | decl->mode() == Variable::CONST); |
| 721 | PropertyAttributes attr = |
| 722 | (decl->mode() == Variable::VAR) ? NONE : READ_ONLY; |
| 723 | __ push(Immediate(Smi::FromInt(attr))); |
| 724 | // Push initial value, if any. |
| 725 | // Note: For variables we must not push an initial value (such as |
| 726 | // 'undefined') because we may have a (legal) redeclaration and we |
| 727 | // must not destroy the current value. |
| 728 | if (decl->mode() == Variable::CONST) { |
| 729 | __ push(Immediate(Factory::the_hole_value())); |
| 730 | } else if (decl->fun() != NULL) { |
| 731 | VisitForValue(decl->fun(), kStack); |
| 732 | } else { |
| 733 | __ push(Immediate(Smi::FromInt(0))); // No initial value! |
| 734 | } |
| 735 | __ CallRuntime(Runtime::kDeclareContextSlot, 4); |
| 736 | break; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | } else if (prop != NULL) { |
| 741 | if (decl->fun() != NULL || decl->mode() == Variable::CONST) { |
| 742 | // We are declaring a function or constant that rewrites to a |
| 743 | // property. Use (keyed) IC to set the initial value. |
| 744 | VisitForValue(prop->obj(), kStack); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 745 | if (decl->fun() != NULL) { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 746 | VisitForValue(prop->key(), kStack); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 747 | VisitForValue(decl->fun(), kAccumulator); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 748 | __ pop(ecx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 749 | } else { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 750 | VisitForValue(prop->key(), kAccumulator); |
| 751 | __ mov(ecx, result_register()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 752 | __ mov(result_register(), Factory::the_hole_value()); |
| 753 | } |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 754 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 755 | |
| 756 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize)); |
| 757 | __ call(ic, RelocInfo::CODE_TARGET); |
| 758 | // Absence of a test eax instruction following the call |
| 759 | // indicates that none of the load was inlined. |
| 760 | __ nop(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 761 | } |
| 762 | } |
| 763 | } |
| 764 | |
| 765 | |
| 766 | void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { |
| 767 | // Call the runtime to declare the globals. |
| 768 | __ push(esi); // The context is the first argument. |
| 769 | __ push(Immediate(pairs)); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 770 | __ push(Immediate(Smi::FromInt(is_eval() ? 1 : 0))); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 771 | __ CallRuntime(Runtime::kDeclareGlobals, 3); |
| 772 | // Return value is ignored. |
| 773 | } |
| 774 | |
| 775 | |
| 776 | void FullCodeGenerator::VisitFunctionLiteral(FunctionLiteral* expr) { |
| 777 | Comment cmnt(masm_, "[ FunctionLiteral"); |
| 778 | |
| 779 | // Build the function boilerplate and instantiate it. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 780 | Handle<SharedFunctionInfo> function_info = |
| 781 | Compiler::BuildFunctionInfo(expr, script(), this); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 782 | if (HasStackOverflow()) return; |
| 783 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 784 | // Create a new closure. |
| 785 | __ push(esi); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 786 | __ push(Immediate(function_info)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 787 | __ CallRuntime(Runtime::kNewClosure, 2); |
| 788 | Apply(context_, eax); |
| 789 | } |
| 790 | |
| 791 | |
| 792 | void FullCodeGenerator::VisitVariableProxy(VariableProxy* expr) { |
| 793 | Comment cmnt(masm_, "[ VariableProxy"); |
| 794 | EmitVariableLoad(expr->var(), context_); |
| 795 | } |
| 796 | |
| 797 | |
| 798 | void FullCodeGenerator::EmitVariableLoad(Variable* var, |
| 799 | Expression::Context context) { |
| 800 | // Four cases: non-this global variables, lookup slots, all other |
| 801 | // types of slots, and parameters that rewrite to explicit property |
| 802 | // accesses on the arguments object. |
| 803 | Slot* slot = var->slot(); |
| 804 | Property* property = var->AsProperty(); |
| 805 | |
| 806 | if (var->is_global() && !var->is_this()) { |
| 807 | Comment cmnt(masm_, "Global variable"); |
| 808 | // Use inline caching. Variable name is passed in ecx and the global |
| 809 | // object on the stack. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 810 | __ mov(eax, CodeGenerator::GlobalObject()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 811 | __ mov(ecx, var->name()); |
| 812 | Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize)); |
| 813 | __ call(ic, RelocInfo::CODE_TARGET_CONTEXT); |
| 814 | // By emitting a nop we make sure that we do not have a test eax |
| 815 | // instruction after the call it is treated specially by the LoadIC code |
| 816 | // Remember that the assembler may choose to do peephole optimization |
| 817 | // (eg, push/pop elimination). |
| 818 | __ nop(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 819 | Apply(context, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 820 | |
| 821 | } else if (slot != NULL && slot->type() == Slot::LOOKUP) { |
| 822 | Comment cmnt(masm_, "Lookup slot"); |
| 823 | __ push(esi); // Context. |
| 824 | __ push(Immediate(var->name())); |
| 825 | __ CallRuntime(Runtime::kLoadContextSlot, 2); |
| 826 | Apply(context, eax); |
| 827 | |
| 828 | } else if (slot != NULL) { |
| 829 | Comment cmnt(masm_, (slot->type() == Slot::CONTEXT) |
| 830 | ? "Context slot" |
| 831 | : "Stack slot"); |
| 832 | Apply(context, slot); |
| 833 | |
| 834 | } else { |
| 835 | Comment cmnt(masm_, "Rewritten parameter"); |
| 836 | ASSERT_NOT_NULL(property); |
| 837 | // Rewritten parameter accesses are of the form "slot[literal]". |
| 838 | |
| 839 | // Assert that the object is in a slot. |
| 840 | Variable* object_var = property->obj()->AsVariableProxy()->AsVariable(); |
| 841 | ASSERT_NOT_NULL(object_var); |
| 842 | Slot* object_slot = object_var->slot(); |
| 843 | ASSERT_NOT_NULL(object_slot); |
| 844 | |
| 845 | // Load the object. |
| 846 | MemOperand object_loc = EmitSlotSearch(object_slot, eax); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 847 | __ mov(edx, object_loc); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 848 | |
| 849 | // Assert that the key is a smi. |
| 850 | Literal* key_literal = property->key()->AsLiteral(); |
| 851 | ASSERT_NOT_NULL(key_literal); |
| 852 | ASSERT(key_literal->handle()->IsSmi()); |
| 853 | |
| 854 | // Load the key. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 855 | __ mov(eax, Immediate(key_literal->handle())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 856 | |
| 857 | // Do a keyed property load. |
| 858 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); |
| 859 | __ call(ic, RelocInfo::CODE_TARGET); |
| 860 | // Notice: We must not have a "test eax, ..." instruction after the |
| 861 | // call. It is treated specially by the LoadIC code. |
| 862 | __ nop(); |
| 863 | // Drop key and object left on the stack by IC. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 864 | Apply(context, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 865 | } |
| 866 | } |
| 867 | |
| 868 | |
| 869 | void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) { |
| 870 | Comment cmnt(masm_, "[ RegExpLiteral"); |
| 871 | Label done; |
| 872 | // Registers will be used as follows: |
| 873 | // edi = JS function. |
| 874 | // ebx = literals array. |
| 875 | // eax = regexp literal. |
| 876 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 877 | __ mov(ebx, FieldOperand(edi, JSFunction::kLiteralsOffset)); |
| 878 | int literal_offset = |
| 879 | FixedArray::kHeaderSize + expr->literal_index() * kPointerSize; |
| 880 | __ mov(eax, FieldOperand(ebx, literal_offset)); |
| 881 | __ cmp(eax, Factory::undefined_value()); |
| 882 | __ j(not_equal, &done); |
| 883 | // Create regexp literal using runtime function |
| 884 | // Result will be in eax. |
| 885 | __ push(ebx); |
| 886 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 887 | __ push(Immediate(expr->pattern())); |
| 888 | __ push(Immediate(expr->flags())); |
| 889 | __ CallRuntime(Runtime::kMaterializeRegExpLiteral, 4); |
| 890 | // Label done: |
| 891 | __ bind(&done); |
| 892 | Apply(context_, eax); |
| 893 | } |
| 894 | |
| 895 | |
| 896 | void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) { |
| 897 | Comment cmnt(masm_, "[ ObjectLiteral"); |
| 898 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 899 | __ push(FieldOperand(edi, JSFunction::kLiteralsOffset)); |
| 900 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 901 | __ push(Immediate(expr->constant_properties())); |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 902 | __ push(Immediate(Smi::FromInt(expr->fast_elements() ? 1 : 0))); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 903 | if (expr->depth() > 1) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 904 | __ CallRuntime(Runtime::kCreateObjectLiteral, 4); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 905 | } else { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 906 | __ CallRuntime(Runtime::kCreateObjectLiteralShallow, 4); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 907 | } |
| 908 | |
| 909 | // If result_saved is true the result is on top of the stack. If |
| 910 | // result_saved is false the result is in eax. |
| 911 | bool result_saved = false; |
| 912 | |
| 913 | for (int i = 0; i < expr->properties()->length(); i++) { |
| 914 | ObjectLiteral::Property* property = expr->properties()->at(i); |
| 915 | if (property->IsCompileTimeValue()) continue; |
| 916 | |
| 917 | Literal* key = property->key(); |
| 918 | Expression* value = property->value(); |
| 919 | if (!result_saved) { |
| 920 | __ push(eax); // Save result on the stack |
| 921 | result_saved = true; |
| 922 | } |
| 923 | switch (property->kind()) { |
| 924 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 925 | ASSERT(!CompileTimeValue::IsCompileTimeValue(value)); |
| 926 | // Fall through. |
| 927 | case ObjectLiteral::Property::COMPUTED: |
| 928 | if (key->handle()->IsSymbol()) { |
| 929 | VisitForValue(value, kAccumulator); |
| 930 | __ mov(ecx, Immediate(key->handle())); |
| 931 | __ mov(edx, Operand(esp, 0)); |
| 932 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 933 | __ call(ic, RelocInfo::CODE_TARGET); |
| 934 | __ nop(); |
| 935 | break; |
| 936 | } |
| 937 | // Fall through. |
| 938 | case ObjectLiteral::Property::PROTOTYPE: |
| 939 | __ push(Operand(esp, 0)); // Duplicate receiver. |
| 940 | VisitForValue(key, kStack); |
| 941 | VisitForValue(value, kStack); |
| 942 | __ CallRuntime(Runtime::kSetProperty, 3); |
| 943 | break; |
| 944 | case ObjectLiteral::Property::SETTER: |
| 945 | case ObjectLiteral::Property::GETTER: |
| 946 | __ push(Operand(esp, 0)); // Duplicate receiver. |
| 947 | VisitForValue(key, kStack); |
| 948 | __ push(Immediate(property->kind() == ObjectLiteral::Property::SETTER ? |
| 949 | Smi::FromInt(1) : |
| 950 | Smi::FromInt(0))); |
| 951 | VisitForValue(value, kStack); |
| 952 | __ CallRuntime(Runtime::kDefineAccessor, 4); |
| 953 | break; |
| 954 | default: UNREACHABLE(); |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | if (result_saved) { |
| 959 | ApplyTOS(context_); |
| 960 | } else { |
| 961 | Apply(context_, eax); |
| 962 | } |
| 963 | } |
| 964 | |
| 965 | |
| 966 | void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) { |
| 967 | Comment cmnt(masm_, "[ ArrayLiteral"); |
| 968 | __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 969 | __ push(FieldOperand(ebx, JSFunction::kLiteralsOffset)); |
| 970 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 971 | __ push(Immediate(expr->constant_elements())); |
| 972 | if (expr->depth() > 1) { |
| 973 | __ CallRuntime(Runtime::kCreateArrayLiteral, 3); |
| 974 | } else { |
| 975 | __ CallRuntime(Runtime::kCreateArrayLiteralShallow, 3); |
| 976 | } |
| 977 | |
| 978 | bool result_saved = false; // Is the result saved to the stack? |
| 979 | |
| 980 | // Emit code to evaluate all the non-constant subexpressions and to store |
| 981 | // them into the newly cloned array. |
| 982 | ZoneList<Expression*>* subexprs = expr->values(); |
| 983 | for (int i = 0, len = subexprs->length(); i < len; i++) { |
| 984 | Expression* subexpr = subexprs->at(i); |
| 985 | // If the subexpression is a literal or a simple materialized literal it |
| 986 | // is already set in the cloned array. |
| 987 | if (subexpr->AsLiteral() != NULL || |
| 988 | CompileTimeValue::IsCompileTimeValue(subexpr)) { |
| 989 | continue; |
| 990 | } |
| 991 | |
| 992 | if (!result_saved) { |
| 993 | __ push(eax); |
| 994 | result_saved = true; |
| 995 | } |
| 996 | VisitForValue(subexpr, kAccumulator); |
| 997 | |
| 998 | // Store the subexpression value in the array's elements. |
| 999 | __ mov(ebx, Operand(esp, 0)); // Copy of array literal. |
| 1000 | __ mov(ebx, FieldOperand(ebx, JSObject::kElementsOffset)); |
| 1001 | int offset = FixedArray::kHeaderSize + (i * kPointerSize); |
| 1002 | __ mov(FieldOperand(ebx, offset), result_register()); |
| 1003 | |
| 1004 | // Update the write barrier for the array store. |
| 1005 | __ RecordWrite(ebx, offset, result_register(), ecx); |
| 1006 | } |
| 1007 | |
| 1008 | if (result_saved) { |
| 1009 | ApplyTOS(context_); |
| 1010 | } else { |
| 1011 | Apply(context_, eax); |
| 1012 | } |
| 1013 | } |
| 1014 | |
| 1015 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1016 | void FullCodeGenerator::VisitAssignment(Assignment* expr) { |
| 1017 | Comment cmnt(masm_, "[ Assignment"); |
| 1018 | ASSERT(expr->op() != Token::INIT_CONST); |
| 1019 | // Left-hand side can only be a property, a global or a (parameter or local) |
| 1020 | // slot. Variables with rewrite to .arguments are treated as KEYED_PROPERTY. |
| 1021 | enum LhsKind { VARIABLE, NAMED_PROPERTY, KEYED_PROPERTY }; |
| 1022 | LhsKind assign_type = VARIABLE; |
| 1023 | Property* prop = expr->target()->AsProperty(); |
| 1024 | if (prop != NULL) { |
| 1025 | assign_type = |
| 1026 | (prop->key()->IsPropertyName()) ? NAMED_PROPERTY : KEYED_PROPERTY; |
| 1027 | } |
| 1028 | |
| 1029 | // Evaluate LHS expression. |
| 1030 | switch (assign_type) { |
| 1031 | case VARIABLE: |
| 1032 | // Nothing to do here. |
| 1033 | break; |
| 1034 | case NAMED_PROPERTY: |
| 1035 | if (expr->is_compound()) { |
| 1036 | // We need the receiver both on the stack and in the accumulator. |
| 1037 | VisitForValue(prop->obj(), kAccumulator); |
| 1038 | __ push(result_register()); |
| 1039 | } else { |
| 1040 | VisitForValue(prop->obj(), kStack); |
| 1041 | } |
| 1042 | break; |
| 1043 | case KEYED_PROPERTY: |
| 1044 | if (expr->is_compound()) { |
| 1045 | VisitForValue(prop->obj(), kStack); |
| 1046 | VisitForValue(prop->key(), kAccumulator); |
| 1047 | __ mov(edx, Operand(esp, 0)); |
| 1048 | __ push(eax); |
| 1049 | } else { |
| 1050 | VisitForValue(prop->obj(), kStack); |
| 1051 | VisitForValue(prop->key(), kStack); |
| 1052 | } |
| 1053 | break; |
| 1054 | } |
| 1055 | |
| 1056 | // If we have a compound assignment: Get value of LHS expression and |
| 1057 | // store in on top of the stack. |
| 1058 | if (expr->is_compound()) { |
| 1059 | Location saved_location = location_; |
| 1060 | location_ = kStack; |
| 1061 | switch (assign_type) { |
| 1062 | case VARIABLE: |
| 1063 | EmitVariableLoad(expr->target()->AsVariableProxy()->var(), |
| 1064 | Expression::kValue); |
| 1065 | break; |
| 1066 | case NAMED_PROPERTY: |
| 1067 | EmitNamedPropertyLoad(prop); |
| 1068 | __ push(result_register()); |
| 1069 | break; |
| 1070 | case KEYED_PROPERTY: |
| 1071 | EmitKeyedPropertyLoad(prop); |
| 1072 | __ push(result_register()); |
| 1073 | break; |
| 1074 | } |
| 1075 | location_ = saved_location; |
| 1076 | } |
| 1077 | |
| 1078 | // Evaluate RHS expression. |
| 1079 | Expression* rhs = expr->value(); |
| 1080 | VisitForValue(rhs, kAccumulator); |
| 1081 | |
| 1082 | // If we have a compound assignment: Apply operator. |
| 1083 | if (expr->is_compound()) { |
| 1084 | Location saved_location = location_; |
| 1085 | location_ = kAccumulator; |
| 1086 | EmitBinaryOp(expr->binary_op(), Expression::kValue); |
| 1087 | location_ = saved_location; |
| 1088 | } |
| 1089 | |
| 1090 | // Record source position before possible IC call. |
| 1091 | SetSourcePosition(expr->position()); |
| 1092 | |
| 1093 | // Store the value. |
| 1094 | switch (assign_type) { |
| 1095 | case VARIABLE: |
| 1096 | EmitVariableAssignment(expr->target()->AsVariableProxy()->var(), |
| 1097 | context_); |
| 1098 | break; |
| 1099 | case NAMED_PROPERTY: |
| 1100 | EmitNamedPropertyAssignment(expr); |
| 1101 | break; |
| 1102 | case KEYED_PROPERTY: |
| 1103 | EmitKeyedPropertyAssignment(expr); |
| 1104 | break; |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1109 | void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) { |
| 1110 | SetSourcePosition(prop->position()); |
| 1111 | Literal* key = prop->key()->AsLiteral(); |
| 1112 | __ mov(ecx, Immediate(key->handle())); |
| 1113 | Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize)); |
| 1114 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1115 | __ nop(); |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) { |
| 1120 | SetSourcePosition(prop->position()); |
| 1121 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); |
| 1122 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1123 | __ nop(); |
| 1124 | } |
| 1125 | |
| 1126 | |
| 1127 | void FullCodeGenerator::EmitBinaryOp(Token::Value op, |
| 1128 | Expression::Context context) { |
| 1129 | __ push(result_register()); |
| 1130 | GenericBinaryOpStub stub(op, |
| 1131 | NO_OVERWRITE, |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1132 | NO_GENERIC_BINARY_FLAGS, |
sgjesse@chromium.org | df7a284 | 2010-03-25 14:34:15 +0000 | [diff] [blame^] | 1133 | TypeInfo::Unknown()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1134 | __ CallStub(&stub); |
| 1135 | Apply(context, eax); |
| 1136 | } |
| 1137 | |
| 1138 | |
| 1139 | void FullCodeGenerator::EmitVariableAssignment(Variable* var, |
| 1140 | Expression::Context context) { |
| 1141 | // Three main cases: global variables, lookup slots, and all other |
| 1142 | // types of slots. Left-hand-side parameters that rewrite to |
| 1143 | // explicit property accesses do not reach here. |
| 1144 | ASSERT(var != NULL); |
| 1145 | ASSERT(var->is_global() || var->slot() != NULL); |
| 1146 | |
| 1147 | Slot* slot = var->slot(); |
| 1148 | if (var->is_global()) { |
| 1149 | ASSERT(!var->is_this()); |
| 1150 | // Assignment to a global variable. Use inline caching for the |
| 1151 | // assignment. Right-hand-side value is passed in eax, variable name in |
| 1152 | // ecx, and the global object on the stack. |
| 1153 | __ mov(ecx, var->name()); |
| 1154 | __ mov(edx, CodeGenerator::GlobalObject()); |
| 1155 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 1156 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1157 | __ nop(); |
| 1158 | Apply(context, eax); |
| 1159 | |
| 1160 | } else if (slot != NULL && slot->type() == Slot::LOOKUP) { |
| 1161 | __ push(result_register()); // Value. |
| 1162 | __ push(esi); // Context. |
| 1163 | __ push(Immediate(var->name())); |
| 1164 | __ CallRuntime(Runtime::kStoreContextSlot, 3); |
| 1165 | Apply(context, eax); |
| 1166 | |
| 1167 | } else if (slot != NULL) { |
| 1168 | switch (slot->type()) { |
| 1169 | case Slot::LOCAL: |
| 1170 | case Slot::PARAMETER: |
| 1171 | __ mov(Operand(ebp, SlotOffset(slot)), result_register()); |
| 1172 | break; |
| 1173 | |
| 1174 | case Slot::CONTEXT: { |
| 1175 | MemOperand target = EmitSlotSearch(slot, ecx); |
| 1176 | __ mov(target, result_register()); |
| 1177 | |
| 1178 | // RecordWrite may destroy all its register arguments. |
| 1179 | __ mov(edx, result_register()); |
| 1180 | int offset = FixedArray::kHeaderSize + slot->index() * kPointerSize; |
| 1181 | __ RecordWrite(ecx, offset, edx, ebx); |
| 1182 | break; |
| 1183 | } |
| 1184 | |
| 1185 | case Slot::LOOKUP: |
| 1186 | UNREACHABLE(); |
| 1187 | break; |
| 1188 | } |
| 1189 | Apply(context, result_register()); |
| 1190 | |
| 1191 | } else { |
| 1192 | // Variables rewritten as properties are not treated as variables in |
| 1193 | // assignments. |
| 1194 | UNREACHABLE(); |
| 1195 | } |
| 1196 | } |
| 1197 | |
| 1198 | |
| 1199 | void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
| 1200 | // Assignment to a property, using a named store IC. |
| 1201 | Property* prop = expr->target()->AsProperty(); |
| 1202 | ASSERT(prop != NULL); |
| 1203 | ASSERT(prop->key()->AsLiteral() != NULL); |
| 1204 | |
| 1205 | // If the assignment starts a block of assignments to the same object, |
| 1206 | // change to slow case to avoid the quadratic behavior of repeatedly |
| 1207 | // adding fast properties. |
| 1208 | if (expr->starts_initialization_block()) { |
| 1209 | __ push(result_register()); |
| 1210 | __ push(Operand(esp, kPointerSize)); // Receiver is now under value. |
| 1211 | __ CallRuntime(Runtime::kToSlowProperties, 1); |
| 1212 | __ pop(result_register()); |
| 1213 | } |
| 1214 | |
| 1215 | // Record source code position before IC call. |
| 1216 | SetSourcePosition(expr->position()); |
| 1217 | __ mov(ecx, prop->key()->AsLiteral()->handle()); |
| 1218 | if (expr->ends_initialization_block()) { |
| 1219 | __ mov(edx, Operand(esp, 0)); |
| 1220 | } else { |
| 1221 | __ pop(edx); |
| 1222 | } |
| 1223 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 1224 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1225 | __ nop(); |
| 1226 | |
| 1227 | // If the assignment ends an initialization block, revert to fast case. |
| 1228 | if (expr->ends_initialization_block()) { |
| 1229 | __ push(eax); // Result of assignment, saved even if not needed. |
| 1230 | __ push(Operand(esp, kPointerSize)); // Receiver is under value. |
| 1231 | __ CallRuntime(Runtime::kToFastProperties, 1); |
| 1232 | __ pop(eax); |
| 1233 | DropAndApply(1, context_, eax); |
| 1234 | } else { |
| 1235 | Apply(context_, eax); |
| 1236 | } |
| 1237 | } |
| 1238 | |
| 1239 | |
| 1240 | void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
| 1241 | // Assignment to a property, using a keyed store IC. |
| 1242 | |
| 1243 | // If the assignment starts a block of assignments to the same object, |
| 1244 | // change to slow case to avoid the quadratic behavior of repeatedly |
| 1245 | // adding fast properties. |
| 1246 | if (expr->starts_initialization_block()) { |
| 1247 | __ push(result_register()); |
| 1248 | // Receiver is now under the key and value. |
| 1249 | __ push(Operand(esp, 2 * kPointerSize)); |
| 1250 | __ CallRuntime(Runtime::kToSlowProperties, 1); |
| 1251 | __ pop(result_register()); |
| 1252 | } |
| 1253 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1254 | __ pop(ecx); |
| 1255 | if (expr->ends_initialization_block()) { |
| 1256 | __ mov(edx, Operand(esp, 0)); // Leave receiver on the stack for later. |
| 1257 | } else { |
| 1258 | __ pop(edx); |
| 1259 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1260 | // Record source code position before IC call. |
| 1261 | SetSourcePosition(expr->position()); |
| 1262 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize)); |
| 1263 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1264 | // This nop signals to the IC that there is no inlined code at the call |
| 1265 | // site for it to patch. |
| 1266 | __ nop(); |
| 1267 | |
| 1268 | // If the assignment ends an initialization block, revert to fast case. |
| 1269 | if (expr->ends_initialization_block()) { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1270 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1271 | __ push(eax); // Result of assignment, saved even if not needed. |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1272 | __ push(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1273 | __ CallRuntime(Runtime::kToFastProperties, 1); |
| 1274 | __ pop(eax); |
| 1275 | } |
| 1276 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1277 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1278 | } |
| 1279 | |
| 1280 | |
| 1281 | void FullCodeGenerator::VisitProperty(Property* expr) { |
| 1282 | Comment cmnt(masm_, "[ Property"); |
| 1283 | Expression* key = expr->key(); |
| 1284 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1285 | if (key->IsPropertyName()) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1286 | VisitForValue(expr->obj(), kAccumulator); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1287 | EmitNamedPropertyLoad(expr); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1288 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1289 | } else { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1290 | VisitForValue(expr->obj(), kStack); |
| 1291 | VisitForValue(expr->key(), kAccumulator); |
| 1292 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1293 | EmitKeyedPropertyLoad(expr); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1294 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1295 | } |
| 1296 | } |
| 1297 | |
| 1298 | |
| 1299 | void FullCodeGenerator::EmitCallWithIC(Call* expr, |
| 1300 | Handle<Object> name, |
| 1301 | RelocInfo::Mode mode) { |
| 1302 | // Code common for calls using the IC. |
| 1303 | ZoneList<Expression*>* args = expr->arguments(); |
| 1304 | int arg_count = args->length(); |
| 1305 | for (int i = 0; i < arg_count; i++) { |
| 1306 | VisitForValue(args->at(i), kStack); |
| 1307 | } |
| 1308 | __ Set(ecx, Immediate(name)); |
| 1309 | // Record source position of the IC call. |
| 1310 | SetSourcePosition(expr->position()); |
| 1311 | InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 1312 | Handle<Code> ic = CodeGenerator::ComputeCallInitialize(arg_count, in_loop); |
| 1313 | __ call(ic, mode); |
| 1314 | // Restore context register. |
| 1315 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 1316 | Apply(context_, eax); |
| 1317 | } |
| 1318 | |
| 1319 | |
| 1320 | void FullCodeGenerator::EmitCallWithStub(Call* expr) { |
| 1321 | // Code common for calls using the call stub. |
| 1322 | ZoneList<Expression*>* args = expr->arguments(); |
| 1323 | int arg_count = args->length(); |
| 1324 | for (int i = 0; i < arg_count; i++) { |
| 1325 | VisitForValue(args->at(i), kStack); |
| 1326 | } |
| 1327 | // Record source position for debugger. |
| 1328 | SetSourcePosition(expr->position()); |
| 1329 | CallFunctionStub stub(arg_count, NOT_IN_LOOP, RECEIVER_MIGHT_BE_VALUE); |
| 1330 | __ CallStub(&stub); |
| 1331 | // Restore context register. |
| 1332 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 1333 | DropAndApply(1, context_, eax); |
| 1334 | } |
| 1335 | |
| 1336 | |
| 1337 | void FullCodeGenerator::VisitCall(Call* expr) { |
| 1338 | Comment cmnt(masm_, "[ Call"); |
| 1339 | Expression* fun = expr->expression(); |
| 1340 | Variable* var = fun->AsVariableProxy()->AsVariable(); |
| 1341 | |
| 1342 | if (var != NULL && var->is_possibly_eval()) { |
| 1343 | // Call to the identifier 'eval'. |
| 1344 | UNREACHABLE(); |
| 1345 | } else if (var != NULL && !var->is_this() && var->is_global()) { |
| 1346 | // Push global object as receiver for the call IC. |
| 1347 | __ push(CodeGenerator::GlobalObject()); |
| 1348 | EmitCallWithIC(expr, var->name(), RelocInfo::CODE_TARGET_CONTEXT); |
| 1349 | } else if (var != NULL && var->slot() != NULL && |
| 1350 | var->slot()->type() == Slot::LOOKUP) { |
| 1351 | // Call to a lookup slot. |
| 1352 | UNREACHABLE(); |
| 1353 | } else if (fun->AsProperty() != NULL) { |
| 1354 | // Call to an object property. |
| 1355 | Property* prop = fun->AsProperty(); |
| 1356 | Literal* key = prop->key()->AsLiteral(); |
| 1357 | if (key != NULL && key->handle()->IsSymbol()) { |
| 1358 | // Call to a named property, use call IC. |
| 1359 | VisitForValue(prop->obj(), kStack); |
| 1360 | EmitCallWithIC(expr, key->handle(), RelocInfo::CODE_TARGET); |
| 1361 | } else { |
| 1362 | // Call to a keyed property, use keyed load IC followed by function |
| 1363 | // call. |
| 1364 | VisitForValue(prop->obj(), kStack); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1365 | VisitForValue(prop->key(), kAccumulator); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1366 | // Record source code position for IC call. |
| 1367 | SetSourcePosition(prop->position()); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1368 | if (prop->is_synthetic()) { |
| 1369 | __ pop(edx); // We do not need to keep the receiver. |
| 1370 | } else { |
| 1371 | __ mov(edx, Operand(esp, 0)); // Keep receiver, to call function on. |
| 1372 | } |
| 1373 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1374 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); |
| 1375 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1376 | // By emitting a nop we make sure that we do not have a "test eax,..." |
| 1377 | // instruction after the call it is treated specially by the LoadIC code. |
| 1378 | __ nop(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1379 | if (prop->is_synthetic()) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1380 | // Push result (function). |
| 1381 | __ push(eax); |
| 1382 | // Push Global receiver. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1383 | __ mov(ecx, CodeGenerator::GlobalObject()); |
| 1384 | __ push(FieldOperand(ecx, GlobalObject::kGlobalReceiverOffset)); |
| 1385 | } else { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1386 | // Pop receiver. |
| 1387 | __ pop(ebx); |
| 1388 | // Push result (function). |
| 1389 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1390 | __ push(ebx); |
| 1391 | } |
| 1392 | EmitCallWithStub(expr); |
| 1393 | } |
| 1394 | } else { |
| 1395 | // Call to some other expression. If the expression is an anonymous |
| 1396 | // function literal not called in a loop, mark it as one that should |
| 1397 | // also use the full code generator. |
| 1398 | FunctionLiteral* lit = fun->AsFunctionLiteral(); |
| 1399 | if (lit != NULL && |
| 1400 | lit->name()->Equals(Heap::empty_string()) && |
| 1401 | loop_depth() == 0) { |
| 1402 | lit->set_try_full_codegen(true); |
| 1403 | } |
| 1404 | VisitForValue(fun, kStack); |
| 1405 | // Load global receiver object. |
| 1406 | __ mov(ebx, CodeGenerator::GlobalObject()); |
| 1407 | __ push(FieldOperand(ebx, GlobalObject::kGlobalReceiverOffset)); |
| 1408 | // Emit function call. |
| 1409 | EmitCallWithStub(expr); |
| 1410 | } |
| 1411 | } |
| 1412 | |
| 1413 | |
| 1414 | void FullCodeGenerator::VisitCallNew(CallNew* expr) { |
| 1415 | Comment cmnt(masm_, "[ CallNew"); |
| 1416 | // According to ECMA-262, section 11.2.2, page 44, the function |
| 1417 | // expression in new calls must be evaluated before the |
| 1418 | // arguments. |
| 1419 | // Push function on the stack. |
| 1420 | VisitForValue(expr->expression(), kStack); |
| 1421 | |
| 1422 | // Push global object (receiver). |
| 1423 | __ push(CodeGenerator::GlobalObject()); |
| 1424 | |
| 1425 | // Push the arguments ("left-to-right") on the stack. |
| 1426 | ZoneList<Expression*>* args = expr->arguments(); |
| 1427 | int arg_count = args->length(); |
| 1428 | for (int i = 0; i < arg_count; i++) { |
| 1429 | VisitForValue(args->at(i), kStack); |
| 1430 | } |
| 1431 | |
| 1432 | // Call the construct call builtin that handles allocation and |
| 1433 | // constructor invocation. |
| 1434 | SetSourcePosition(expr->position()); |
| 1435 | |
| 1436 | // Load function, arg_count into edi and eax. |
| 1437 | __ Set(eax, Immediate(arg_count)); |
| 1438 | // Function is in esp[arg_count + 1]. |
| 1439 | __ mov(edi, Operand(esp, eax, times_pointer_size, kPointerSize)); |
| 1440 | |
| 1441 | Handle<Code> construct_builtin(Builtins::builtin(Builtins::JSConstructCall)); |
| 1442 | __ call(construct_builtin, RelocInfo::CONSTRUCT_CALL); |
| 1443 | |
| 1444 | // Replace function on TOS with result in eax, or pop it. |
| 1445 | DropAndApply(1, context_, eax); |
| 1446 | } |
| 1447 | |
| 1448 | |
| 1449 | void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) { |
| 1450 | Comment cmnt(masm_, "[ CallRuntime"); |
| 1451 | ZoneList<Expression*>* args = expr->arguments(); |
| 1452 | |
| 1453 | if (expr->is_jsruntime()) { |
| 1454 | // Prepare for calling JS runtime function. |
| 1455 | __ mov(eax, CodeGenerator::GlobalObject()); |
| 1456 | __ push(FieldOperand(eax, GlobalObject::kBuiltinsOffset)); |
| 1457 | } |
| 1458 | |
| 1459 | // Push the arguments ("left-to-right"). |
| 1460 | int arg_count = args->length(); |
| 1461 | for (int i = 0; i < arg_count; i++) { |
| 1462 | VisitForValue(args->at(i), kStack); |
| 1463 | } |
| 1464 | |
| 1465 | if (expr->is_jsruntime()) { |
| 1466 | // Call the JS runtime function via a call IC. |
| 1467 | __ Set(ecx, Immediate(expr->name())); |
| 1468 | InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 1469 | Handle<Code> ic = CodeGenerator::ComputeCallInitialize(arg_count, in_loop); |
| 1470 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1471 | // Restore context register. |
| 1472 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 1473 | } else { |
| 1474 | // Call the C runtime function. |
| 1475 | __ CallRuntime(expr->function(), arg_count); |
| 1476 | } |
| 1477 | Apply(context_, eax); |
| 1478 | } |
| 1479 | |
| 1480 | |
| 1481 | void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { |
| 1482 | switch (expr->op()) { |
| 1483 | case Token::VOID: { |
| 1484 | Comment cmnt(masm_, "[ UnaryOperation (VOID)"); |
| 1485 | VisitForEffect(expr->expression()); |
| 1486 | switch (context_) { |
| 1487 | case Expression::kUninitialized: |
| 1488 | UNREACHABLE(); |
| 1489 | break; |
| 1490 | case Expression::kEffect: |
| 1491 | break; |
| 1492 | case Expression::kValue: |
| 1493 | switch (location_) { |
| 1494 | case kAccumulator: |
| 1495 | __ mov(result_register(), Factory::undefined_value()); |
| 1496 | break; |
| 1497 | case kStack: |
| 1498 | __ push(Immediate(Factory::undefined_value())); |
| 1499 | break; |
| 1500 | } |
| 1501 | break; |
| 1502 | case Expression::kTestValue: |
| 1503 | // Value is false so it's needed. |
| 1504 | switch (location_) { |
| 1505 | case kAccumulator: |
| 1506 | __ mov(result_register(), Factory::undefined_value()); |
| 1507 | break; |
| 1508 | case kStack: |
| 1509 | __ push(Immediate(Factory::undefined_value())); |
| 1510 | break; |
| 1511 | } |
| 1512 | // Fall through. |
| 1513 | case Expression::kTest: |
| 1514 | case Expression::kValueTest: |
| 1515 | __ jmp(false_label_); |
| 1516 | break; |
| 1517 | } |
| 1518 | break; |
| 1519 | } |
| 1520 | |
| 1521 | case Token::NOT: { |
| 1522 | Comment cmnt(masm_, "[ UnaryOperation (NOT)"); |
| 1523 | Label materialize_true, materialize_false, done; |
| 1524 | // Initially assume a pure test context. Notice that the labels are |
| 1525 | // swapped. |
| 1526 | Label* if_true = false_label_; |
| 1527 | Label* if_false = true_label_; |
| 1528 | switch (context_) { |
| 1529 | case Expression::kUninitialized: |
| 1530 | UNREACHABLE(); |
| 1531 | break; |
| 1532 | case Expression::kEffect: |
| 1533 | if_true = &done; |
| 1534 | if_false = &done; |
| 1535 | break; |
| 1536 | case Expression::kValue: |
| 1537 | if_true = &materialize_false; |
| 1538 | if_false = &materialize_true; |
| 1539 | break; |
| 1540 | case Expression::kTest: |
| 1541 | break; |
| 1542 | case Expression::kValueTest: |
| 1543 | if_false = &materialize_true; |
| 1544 | break; |
| 1545 | case Expression::kTestValue: |
| 1546 | if_true = &materialize_false; |
| 1547 | break; |
| 1548 | } |
| 1549 | VisitForControl(expr->expression(), if_true, if_false); |
| 1550 | Apply(context_, if_false, if_true); // Labels swapped. |
| 1551 | break; |
| 1552 | } |
| 1553 | |
| 1554 | case Token::TYPEOF: { |
| 1555 | Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)"); |
| 1556 | VariableProxy* proxy = expr->expression()->AsVariableProxy(); |
| 1557 | if (proxy != NULL && |
| 1558 | !proxy->var()->is_this() && |
| 1559 | proxy->var()->is_global()) { |
| 1560 | Comment cmnt(masm_, "Global variable"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1561 | __ mov(eax, CodeGenerator::GlobalObject()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1562 | __ mov(ecx, Immediate(proxy->name())); |
| 1563 | Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize)); |
| 1564 | // Use a regular load, not a contextual load, to avoid a reference |
| 1565 | // error. |
| 1566 | __ call(ic, RelocInfo::CODE_TARGET); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1567 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1568 | } else if (proxy != NULL && |
| 1569 | proxy->var()->slot() != NULL && |
| 1570 | proxy->var()->slot()->type() == Slot::LOOKUP) { |
| 1571 | __ push(esi); |
| 1572 | __ push(Immediate(proxy->name())); |
| 1573 | __ CallRuntime(Runtime::kLoadContextSlotNoReferenceError, 2); |
| 1574 | __ push(eax); |
| 1575 | } else { |
| 1576 | // This expression cannot throw a reference error at the top level. |
| 1577 | VisitForValue(expr->expression(), kStack); |
| 1578 | } |
| 1579 | |
| 1580 | __ CallRuntime(Runtime::kTypeof, 1); |
| 1581 | Apply(context_, eax); |
| 1582 | break; |
| 1583 | } |
| 1584 | |
| 1585 | case Token::ADD: { |
| 1586 | Comment cmt(masm_, "[ UnaryOperation (ADD)"); |
| 1587 | VisitForValue(expr->expression(), kAccumulator); |
| 1588 | Label no_conversion; |
| 1589 | __ test(result_register(), Immediate(kSmiTagMask)); |
| 1590 | __ j(zero, &no_conversion); |
| 1591 | __ push(result_register()); |
| 1592 | __ InvokeBuiltin(Builtins::TO_NUMBER, CALL_FUNCTION); |
| 1593 | __ bind(&no_conversion); |
| 1594 | Apply(context_, result_register()); |
| 1595 | break; |
| 1596 | } |
| 1597 | |
| 1598 | case Token::SUB: { |
| 1599 | Comment cmt(masm_, "[ UnaryOperation (SUB)"); |
| 1600 | bool overwrite = |
| 1601 | (expr->expression()->AsBinaryOperation() != NULL && |
| 1602 | expr->expression()->AsBinaryOperation()->ResultOverwriteAllowed()); |
| 1603 | GenericUnaryOpStub stub(Token::SUB, overwrite); |
| 1604 | // GenericUnaryOpStub expects the argument to be in the |
| 1605 | // accumulator register eax. |
| 1606 | VisitForValue(expr->expression(), kAccumulator); |
| 1607 | __ CallStub(&stub); |
| 1608 | Apply(context_, eax); |
| 1609 | break; |
| 1610 | } |
| 1611 | |
| 1612 | case Token::BIT_NOT: { |
| 1613 | Comment cmt(masm_, "[ UnaryOperation (BIT_NOT)"); |
| 1614 | bool overwrite = |
| 1615 | (expr->expression()->AsBinaryOperation() != NULL && |
| 1616 | expr->expression()->AsBinaryOperation()->ResultOverwriteAllowed()); |
| 1617 | GenericUnaryOpStub stub(Token::BIT_NOT, overwrite); |
| 1618 | // GenericUnaryOpStub expects the argument to be in the |
| 1619 | // accumulator register eax. |
| 1620 | VisitForValue(expr->expression(), kAccumulator); |
| 1621 | // Avoid calling the stub for Smis. |
| 1622 | Label smi, done; |
| 1623 | __ test(result_register(), Immediate(kSmiTagMask)); |
| 1624 | __ j(zero, &smi); |
| 1625 | // Non-smi: call stub leaving result in accumulator register. |
| 1626 | __ CallStub(&stub); |
| 1627 | __ jmp(&done); |
| 1628 | // Perform operation directly on Smis. |
| 1629 | __ bind(&smi); |
| 1630 | __ not_(result_register()); |
| 1631 | __ and_(result_register(), ~kSmiTagMask); // Remove inverted smi-tag. |
| 1632 | __ bind(&done); |
| 1633 | Apply(context_, result_register()); |
| 1634 | break; |
| 1635 | } |
| 1636 | |
| 1637 | default: |
| 1638 | UNREACHABLE(); |
| 1639 | } |
| 1640 | } |
| 1641 | |
| 1642 | |
| 1643 | void FullCodeGenerator::VisitCountOperation(CountOperation* expr) { |
| 1644 | Comment cmnt(masm_, "[ CountOperation"); |
| 1645 | |
| 1646 | // Expression can only be a property, a global or a (parameter or local) |
| 1647 | // slot. Variables with rewrite to .arguments are treated as KEYED_PROPERTY. |
| 1648 | enum LhsKind { VARIABLE, NAMED_PROPERTY, KEYED_PROPERTY }; |
| 1649 | LhsKind assign_type = VARIABLE; |
| 1650 | Property* prop = expr->expression()->AsProperty(); |
| 1651 | // In case of a property we use the uninitialized expression context |
| 1652 | // of the key to detect a named property. |
| 1653 | if (prop != NULL) { |
| 1654 | assign_type = |
| 1655 | (prop->key()->IsPropertyName()) ? NAMED_PROPERTY : KEYED_PROPERTY; |
| 1656 | } |
| 1657 | |
| 1658 | // Evaluate expression and get value. |
| 1659 | if (assign_type == VARIABLE) { |
| 1660 | ASSERT(expr->expression()->AsVariableProxy()->var() != NULL); |
| 1661 | Location saved_location = location_; |
| 1662 | location_ = kAccumulator; |
| 1663 | EmitVariableLoad(expr->expression()->AsVariableProxy()->var(), |
| 1664 | Expression::kValue); |
| 1665 | location_ = saved_location; |
| 1666 | } else { |
| 1667 | // Reserve space for result of postfix operation. |
| 1668 | if (expr->is_postfix() && context_ != Expression::kEffect) { |
| 1669 | __ push(Immediate(Smi::FromInt(0))); |
| 1670 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1671 | if (assign_type == NAMED_PROPERTY) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1672 | // Put the object both on the stack and in the accumulator. |
| 1673 | VisitForValue(prop->obj(), kAccumulator); |
| 1674 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1675 | EmitNamedPropertyLoad(prop); |
| 1676 | } else { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1677 | VisitForValue(prop->obj(), kStack); |
| 1678 | VisitForValue(prop->key(), kAccumulator); |
| 1679 | __ mov(edx, Operand(esp, 0)); |
| 1680 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1681 | EmitKeyedPropertyLoad(prop); |
| 1682 | } |
| 1683 | } |
| 1684 | |
| 1685 | // Call ToNumber only if operand is not a smi. |
| 1686 | Label no_conversion; |
| 1687 | __ test(eax, Immediate(kSmiTagMask)); |
| 1688 | __ j(zero, &no_conversion); |
| 1689 | __ push(eax); |
| 1690 | __ InvokeBuiltin(Builtins::TO_NUMBER, CALL_FUNCTION); |
| 1691 | __ bind(&no_conversion); |
| 1692 | |
| 1693 | // Save result for postfix expressions. |
| 1694 | if (expr->is_postfix()) { |
| 1695 | switch (context_) { |
| 1696 | case Expression::kUninitialized: |
| 1697 | UNREACHABLE(); |
| 1698 | case Expression::kEffect: |
| 1699 | // Do not save result. |
| 1700 | break; |
| 1701 | case Expression::kValue: |
| 1702 | case Expression::kTest: |
| 1703 | case Expression::kValueTest: |
| 1704 | case Expression::kTestValue: |
| 1705 | // Save the result on the stack. If we have a named or keyed property |
| 1706 | // we store the result under the receiver that is currently on top |
| 1707 | // of the stack. |
| 1708 | switch (assign_type) { |
| 1709 | case VARIABLE: |
| 1710 | __ push(eax); |
| 1711 | break; |
| 1712 | case NAMED_PROPERTY: |
| 1713 | __ mov(Operand(esp, kPointerSize), eax); |
| 1714 | break; |
| 1715 | case KEYED_PROPERTY: |
| 1716 | __ mov(Operand(esp, 2 * kPointerSize), eax); |
| 1717 | break; |
| 1718 | } |
| 1719 | break; |
| 1720 | } |
| 1721 | } |
| 1722 | |
| 1723 | // Inline smi case if we are in a loop. |
| 1724 | Label stub_call, done; |
| 1725 | if (loop_depth() > 0) { |
| 1726 | if (expr->op() == Token::INC) { |
| 1727 | __ add(Operand(eax), Immediate(Smi::FromInt(1))); |
| 1728 | } else { |
| 1729 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
| 1730 | } |
| 1731 | __ j(overflow, &stub_call); |
| 1732 | // We could eliminate this smi check if we split the code at |
| 1733 | // the first smi check before calling ToNumber. |
| 1734 | __ test(eax, Immediate(kSmiTagMask)); |
| 1735 | __ j(zero, &done); |
| 1736 | __ bind(&stub_call); |
| 1737 | // Call stub. Undo operation first. |
| 1738 | if (expr->op() == Token::INC) { |
| 1739 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
| 1740 | } else { |
| 1741 | __ add(Operand(eax), Immediate(Smi::FromInt(1))); |
| 1742 | } |
| 1743 | } |
| 1744 | // Call stub for +1/-1. |
| 1745 | GenericBinaryOpStub stub(expr->binary_op(), |
| 1746 | NO_OVERWRITE, |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1747 | NO_GENERIC_BINARY_FLAGS, |
sgjesse@chromium.org | df7a284 | 2010-03-25 14:34:15 +0000 | [diff] [blame^] | 1748 | TypeInfo::Unknown()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1749 | stub.GenerateCall(masm(), eax, Smi::FromInt(1)); |
| 1750 | __ bind(&done); |
| 1751 | |
| 1752 | // Store the value returned in eax. |
| 1753 | switch (assign_type) { |
| 1754 | case VARIABLE: |
| 1755 | if (expr->is_postfix()) { |
| 1756 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
| 1757 | Expression::kEffect); |
| 1758 | // For all contexts except kEffect: We have the result on |
| 1759 | // top of the stack. |
| 1760 | if (context_ != Expression::kEffect) { |
| 1761 | ApplyTOS(context_); |
| 1762 | } |
| 1763 | } else { |
| 1764 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
| 1765 | context_); |
| 1766 | } |
| 1767 | break; |
| 1768 | case NAMED_PROPERTY: { |
| 1769 | __ mov(ecx, prop->key()->AsLiteral()->handle()); |
| 1770 | __ pop(edx); |
| 1771 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 1772 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1773 | // This nop signals to the IC that there is no inlined code at the call |
| 1774 | // site for it to patch. |
| 1775 | __ nop(); |
| 1776 | if (expr->is_postfix()) { |
| 1777 | if (context_ != Expression::kEffect) { |
| 1778 | ApplyTOS(context_); |
| 1779 | } |
| 1780 | } else { |
| 1781 | Apply(context_, eax); |
| 1782 | } |
| 1783 | break; |
| 1784 | } |
| 1785 | case KEYED_PROPERTY: { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1786 | __ pop(ecx); |
| 1787 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1788 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize)); |
| 1789 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1790 | // This nop signals to the IC that there is no inlined code at the call |
| 1791 | // site for it to patch. |
| 1792 | __ nop(); |
| 1793 | if (expr->is_postfix()) { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1794 | // Result is on the stack |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1795 | if (context_ != Expression::kEffect) { |
| 1796 | ApplyTOS(context_); |
| 1797 | } |
| 1798 | } else { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1799 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1800 | } |
| 1801 | break; |
| 1802 | } |
| 1803 | } |
| 1804 | } |
| 1805 | |
| 1806 | |
| 1807 | void FullCodeGenerator::VisitBinaryOperation(BinaryOperation* expr) { |
| 1808 | Comment cmnt(masm_, "[ BinaryOperation"); |
| 1809 | switch (expr->op()) { |
| 1810 | case Token::COMMA: |
| 1811 | VisitForEffect(expr->left()); |
| 1812 | Visit(expr->right()); |
| 1813 | break; |
| 1814 | |
| 1815 | case Token::OR: |
| 1816 | case Token::AND: |
| 1817 | EmitLogicalOperation(expr); |
| 1818 | break; |
| 1819 | |
| 1820 | case Token::ADD: |
| 1821 | case Token::SUB: |
| 1822 | case Token::DIV: |
| 1823 | case Token::MOD: |
| 1824 | case Token::MUL: |
| 1825 | case Token::BIT_OR: |
| 1826 | case Token::BIT_AND: |
| 1827 | case Token::BIT_XOR: |
| 1828 | case Token::SHL: |
| 1829 | case Token::SHR: |
| 1830 | case Token::SAR: |
| 1831 | VisitForValue(expr->left(), kStack); |
| 1832 | VisitForValue(expr->right(), kAccumulator); |
| 1833 | EmitBinaryOp(expr->op(), context_); |
| 1834 | break; |
| 1835 | |
| 1836 | default: |
| 1837 | UNREACHABLE(); |
| 1838 | } |
| 1839 | } |
| 1840 | |
| 1841 | |
| 1842 | void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) { |
| 1843 | Comment cmnt(masm_, "[ CompareOperation"); |
| 1844 | |
| 1845 | // Always perform the comparison for its control flow. Pack the result |
| 1846 | // into the expression's context after the comparison is performed. |
| 1847 | Label materialize_true, materialize_false, done; |
| 1848 | // Initially assume we are in a test context. |
| 1849 | Label* if_true = true_label_; |
| 1850 | Label* if_false = false_label_; |
| 1851 | switch (context_) { |
| 1852 | case Expression::kUninitialized: |
| 1853 | UNREACHABLE(); |
| 1854 | break; |
| 1855 | case Expression::kEffect: |
| 1856 | if_true = &done; |
| 1857 | if_false = &done; |
| 1858 | break; |
| 1859 | case Expression::kValue: |
| 1860 | if_true = &materialize_true; |
| 1861 | if_false = &materialize_false; |
| 1862 | break; |
| 1863 | case Expression::kTest: |
| 1864 | break; |
| 1865 | case Expression::kValueTest: |
| 1866 | if_true = &materialize_true; |
| 1867 | break; |
| 1868 | case Expression::kTestValue: |
| 1869 | if_false = &materialize_false; |
| 1870 | break; |
| 1871 | } |
| 1872 | |
| 1873 | VisitForValue(expr->left(), kStack); |
| 1874 | switch (expr->op()) { |
| 1875 | case Token::IN: |
| 1876 | VisitForValue(expr->right(), kStack); |
| 1877 | __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION); |
| 1878 | __ cmp(eax, Factory::true_value()); |
| 1879 | __ j(equal, if_true); |
| 1880 | __ jmp(if_false); |
| 1881 | break; |
| 1882 | |
| 1883 | case Token::INSTANCEOF: { |
| 1884 | VisitForValue(expr->right(), kStack); |
| 1885 | InstanceofStub stub; |
| 1886 | __ CallStub(&stub); |
| 1887 | __ test(eax, Operand(eax)); |
| 1888 | __ j(zero, if_true); // The stub returns 0 for true. |
| 1889 | __ jmp(if_false); |
| 1890 | break; |
| 1891 | } |
| 1892 | |
| 1893 | default: { |
| 1894 | VisitForValue(expr->right(), kAccumulator); |
| 1895 | Condition cc = no_condition; |
| 1896 | bool strict = false; |
| 1897 | switch (expr->op()) { |
| 1898 | case Token::EQ_STRICT: |
| 1899 | strict = true; |
| 1900 | // Fall through |
| 1901 | case Token::EQ: |
| 1902 | cc = equal; |
| 1903 | __ pop(edx); |
| 1904 | break; |
| 1905 | case Token::LT: |
| 1906 | cc = less; |
| 1907 | __ pop(edx); |
| 1908 | break; |
| 1909 | case Token::GT: |
| 1910 | // Reverse left and right sizes to obtain ECMA-262 conversion order. |
| 1911 | cc = less; |
| 1912 | __ mov(edx, result_register()); |
| 1913 | __ pop(eax); |
| 1914 | break; |
| 1915 | case Token::LTE: |
| 1916 | // Reverse left and right sizes to obtain ECMA-262 conversion order. |
| 1917 | cc = greater_equal; |
| 1918 | __ mov(edx, result_register()); |
| 1919 | __ pop(eax); |
| 1920 | break; |
| 1921 | case Token::GTE: |
| 1922 | cc = greater_equal; |
| 1923 | __ pop(edx); |
| 1924 | break; |
| 1925 | case Token::IN: |
| 1926 | case Token::INSTANCEOF: |
| 1927 | default: |
| 1928 | UNREACHABLE(); |
| 1929 | } |
| 1930 | |
| 1931 | // The comparison stub expects the smi vs. smi case to be handled |
| 1932 | // before it is called. |
| 1933 | Label slow_case; |
| 1934 | __ mov(ecx, Operand(edx)); |
| 1935 | __ or_(ecx, Operand(eax)); |
| 1936 | __ test(ecx, Immediate(kSmiTagMask)); |
| 1937 | __ j(not_zero, &slow_case, not_taken); |
| 1938 | __ cmp(edx, Operand(eax)); |
| 1939 | __ j(cc, if_true); |
| 1940 | __ jmp(if_false); |
| 1941 | |
| 1942 | __ bind(&slow_case); |
| 1943 | CompareStub stub(cc, strict); |
| 1944 | __ CallStub(&stub); |
| 1945 | __ test(eax, Operand(eax)); |
| 1946 | __ j(cc, if_true); |
| 1947 | __ jmp(if_false); |
| 1948 | } |
| 1949 | } |
| 1950 | |
| 1951 | // Convert the result of the comparison into one expected for this |
| 1952 | // expression's context. |
| 1953 | Apply(context_, if_true, if_false); |
| 1954 | } |
| 1955 | |
| 1956 | |
| 1957 | void FullCodeGenerator::VisitThisFunction(ThisFunction* expr) { |
| 1958 | __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1959 | Apply(context_, eax); |
| 1960 | } |
| 1961 | |
| 1962 | |
| 1963 | Register FullCodeGenerator::result_register() { return eax; } |
| 1964 | |
| 1965 | |
| 1966 | Register FullCodeGenerator::context_register() { return esi; } |
| 1967 | |
| 1968 | |
| 1969 | void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) { |
| 1970 | ASSERT_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
| 1971 | __ mov(Operand(ebp, frame_offset), value); |
| 1972 | } |
| 1973 | |
| 1974 | |
| 1975 | void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
| 1976 | __ mov(dst, CodeGenerator::ContextOperand(esi, context_index)); |
| 1977 | } |
| 1978 | |
| 1979 | |
| 1980 | // ---------------------------------------------------------------------------- |
| 1981 | // Non-local control flow support. |
| 1982 | |
| 1983 | void FullCodeGenerator::EnterFinallyBlock() { |
| 1984 | // Cook return address on top of stack (smi encoded Code* delta) |
| 1985 | ASSERT(!result_register().is(edx)); |
| 1986 | __ mov(edx, Operand(esp, 0)); |
| 1987 | __ sub(Operand(edx), Immediate(masm_->CodeObject())); |
| 1988 | ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); |
| 1989 | ASSERT_EQ(0, kSmiTag); |
| 1990 | __ add(edx, Operand(edx)); // Convert to smi. |
| 1991 | __ mov(Operand(esp, 0), edx); |
| 1992 | // Store result register while executing finally block. |
| 1993 | __ push(result_register()); |
| 1994 | } |
| 1995 | |
| 1996 | |
| 1997 | void FullCodeGenerator::ExitFinallyBlock() { |
| 1998 | ASSERT(!result_register().is(edx)); |
| 1999 | // Restore result register from stack. |
| 2000 | __ pop(result_register()); |
| 2001 | // Uncook return address. |
| 2002 | __ mov(edx, Operand(esp, 0)); |
| 2003 | __ sar(edx, 1); // Convert smi to int. |
| 2004 | __ add(Operand(edx), Immediate(masm_->CodeObject())); |
| 2005 | __ mov(Operand(esp, 0), edx); |
| 2006 | // And return. |
| 2007 | __ ret(0); |
| 2008 | } |
| 2009 | |
| 2010 | |
| 2011 | #undef __ |
| 2012 | |
| 2013 | } } // namespace v8::internal |