erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 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 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 30 | #if defined(V8_TARGET_ARCH_IA32) |
| 31 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 32 | #include "codegen-inl.h" |
| 33 | #include "compiler.h" |
| 34 | #include "debug.h" |
| 35 | #include "full-codegen.h" |
| 36 | #include "parser.h" |
sgjesse@chromium.org | 833cdd7 | 2010-02-26 10:06:16 +0000 | [diff] [blame] | 37 | #include "scopes.h" |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 38 | |
| 39 | namespace v8 { |
| 40 | namespace internal { |
| 41 | |
| 42 | #define __ ACCESS_MASM(masm_) |
| 43 | |
| 44 | // Generate code for a JS function. On entry to the function the receiver |
| 45 | // and arguments have been pushed on the stack left to right, with the |
| 46 | // return address on top of them. The actual argument count matches the |
| 47 | // formal parameter count expected by the function. |
| 48 | // |
| 49 | // The live registers are: |
| 50 | // o edi: the JS function object being called (ie, ourselves) |
| 51 | // o esi: our context |
| 52 | // o ebp: our caller's frame pointer |
| 53 | // o esp: stack pointer (pointing to return address) |
| 54 | // |
| 55 | // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 56 | // frames-ia32.h for its layout. |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 57 | void FullCodeGenerator::Generate(CompilationInfo* info) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 58 | ASSERT(info_ == NULL); |
| 59 | info_ = info; |
| 60 | SetFunctionPosition(function()); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 61 | Comment cmnt(masm_, "[ function compiled by full code generator"); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 62 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 63 | __ push(ebp); // Caller's frame pointer. |
| 64 | __ mov(ebp, esp); |
| 65 | __ push(esi); // Callee's context. |
| 66 | __ push(edi); // Callee's JS Function. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 67 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 68 | { Comment cmnt(masm_, "[ Allocate locals"); |
| 69 | int locals_count = scope()->num_stack_slots(); |
| 70 | if (locals_count == 1) { |
| 71 | __ push(Immediate(Factory::undefined_value())); |
| 72 | } else if (locals_count > 1) { |
| 73 | __ mov(eax, Immediate(Factory::undefined_value())); |
| 74 | for (int i = 0; i < locals_count; i++) { |
| 75 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 76 | } |
| 77 | } |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 78 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 79 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 80 | bool function_in_register = true; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 81 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 82 | // Possibly allocate a local context. |
| 83 | int heap_slots = scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
| 84 | if (heap_slots > 0) { |
| 85 | Comment cmnt(masm_, "[ Allocate local context"); |
| 86 | // Argument to NewContext is the function, which is still in edi. |
| 87 | __ push(edi); |
| 88 | if (heap_slots <= FastNewContextStub::kMaximumSlots) { |
| 89 | FastNewContextStub stub(heap_slots); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 90 | __ CallStub(&stub); |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 91 | } else { |
| 92 | __ CallRuntime(Runtime::kNewContext, 1); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 93 | } |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 94 | function_in_register = false; |
| 95 | // Context is returned in both eax and esi. It replaces the context |
| 96 | // passed to us. It's saved in the stack and kept live in esi. |
| 97 | __ mov(Operand(ebp, StandardFrameConstants::kContextOffset), esi); |
| 98 | |
| 99 | // Copy parameters into context if necessary. |
| 100 | int num_parameters = scope()->num_parameters(); |
| 101 | for (int i = 0; i < num_parameters; i++) { |
| 102 | Slot* slot = scope()->parameter(i)->slot(); |
| 103 | if (slot != NULL && slot->type() == Slot::CONTEXT) { |
| 104 | int parameter_offset = StandardFrameConstants::kCallerSPOffset + |
| 105 | (num_parameters - 1 - i) * kPointerSize; |
| 106 | // Load parameter from stack. |
| 107 | __ mov(eax, Operand(ebp, parameter_offset)); |
| 108 | // Store it in the context. |
| 109 | int context_offset = Context::SlotOffset(slot->index()); |
| 110 | __ mov(Operand(esi, context_offset), eax); |
| 111 | // Update the write barrier. This clobbers all involved |
| 112 | // registers, so we have use a third register to avoid |
| 113 | // clobbering esi. |
| 114 | __ mov(ecx, esi); |
| 115 | __ RecordWrite(ecx, context_offset, eax, ebx); |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | Variable* arguments = scope()->arguments()->AsVariable(); |
| 121 | if (arguments != NULL) { |
| 122 | // Function uses arguments object. |
| 123 | Comment cmnt(masm_, "[ Allocate arguments object"); |
| 124 | if (function_in_register) { |
| 125 | __ push(edi); |
| 126 | } else { |
| 127 | __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 128 | } |
| 129 | // Receiver is just before the parameters on the caller's stack. |
| 130 | int offset = scope()->num_parameters() * kPointerSize; |
| 131 | __ lea(edx, |
| 132 | Operand(ebp, StandardFrameConstants::kCallerSPOffset + offset)); |
| 133 | __ push(edx); |
| 134 | __ push(Immediate(Smi::FromInt(scope()->num_parameters()))); |
| 135 | // Arguments to ArgumentsAccessStub: |
| 136 | // function, receiver address, parameter count. |
| 137 | // The stub will rewrite receiver and parameter count if the previous |
| 138 | // stack frame was an arguments adapter frame. |
| 139 | ArgumentsAccessStub stub(ArgumentsAccessStub::NEW_OBJECT); |
| 140 | __ CallStub(&stub); |
| 141 | __ mov(ecx, eax); // Duplicate result. |
| 142 | Move(arguments->slot(), eax, ebx, edx); |
| 143 | Slot* dot_arguments_slot = |
| 144 | scope()->arguments_shadow()->AsVariable()->slot(); |
| 145 | Move(dot_arguments_slot, ecx, ebx, edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | { Comment cmnt(masm_, "[ Declarations"); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 149 | // For named function expressions, declare the function name as a |
| 150 | // constant. |
| 151 | if (scope()->is_function_scope() && scope()->function() != NULL) { |
| 152 | EmitDeclaration(scope()->function(), Variable::CONST, NULL); |
| 153 | } |
| 154 | // Visit all the explicit declarations unless there is an illegal |
| 155 | // redeclaration. |
| 156 | if (scope()->HasIllegalRedeclaration()) { |
| 157 | scope()->VisitIllegalRedeclaration(this); |
| 158 | } else { |
| 159 | VisitDeclarations(scope()->declarations()); |
| 160 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | { Comment cmnt(masm_, "[ Stack check"); |
| 164 | Label ok; |
| 165 | ExternalReference stack_limit = |
| 166 | ExternalReference::address_of_stack_limit(); |
| 167 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
| 168 | __ j(above_equal, &ok, taken); |
| 169 | StackCheckStub stub; |
| 170 | __ CallStub(&stub); |
| 171 | __ bind(&ok); |
| 172 | } |
| 173 | |
| 174 | if (FLAG_trace) { |
| 175 | __ CallRuntime(Runtime::kTraceEnter, 0); |
| 176 | } |
| 177 | |
| 178 | { Comment cmnt(masm_, "[ Body"); |
| 179 | ASSERT(loop_depth() == 0); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 180 | VisitStatements(function()->body()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 181 | ASSERT(loop_depth() == 0); |
| 182 | } |
| 183 | |
| 184 | { Comment cmnt(masm_, "[ return <undefined>;"); |
| 185 | // Emit a 'return undefined' in case control fell off the end of the body. |
| 186 | __ mov(eax, Factory::undefined_value()); |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 187 | EmitReturnSequence(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 188 | } |
| 189 | } |
| 190 | |
| 191 | |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 192 | void FullCodeGenerator::EmitReturnSequence() { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 193 | Comment cmnt(masm_, "[ Return sequence"); |
| 194 | if (return_label_.is_bound()) { |
| 195 | __ jmp(&return_label_); |
| 196 | } else { |
| 197 | // Common return label |
| 198 | __ bind(&return_label_); |
| 199 | if (FLAG_trace) { |
| 200 | __ push(eax); |
| 201 | __ CallRuntime(Runtime::kTraceExit, 1); |
| 202 | } |
| 203 | #ifdef DEBUG |
| 204 | // Add a label for checking the size of the code used for returning. |
| 205 | Label check_exit_codesize; |
| 206 | masm_->bind(&check_exit_codesize); |
| 207 | #endif |
whesse@chromium.org | e90029b | 2010-08-02 11:52:17 +0000 | [diff] [blame] | 208 | CodeGenerator::RecordPositions(masm_, function()->end_position() - 1); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 209 | __ RecordJSReturn(); |
| 210 | // Do not use the leave instruction here because it is too short to |
| 211 | // patch with the code required by the debugger. |
| 212 | __ mov(esp, ebp); |
| 213 | __ pop(ebp); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 214 | __ ret((scope()->num_parameters() + 1) * kPointerSize); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 215 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 216 | // Check that the size of the code used for returning matches what is |
| 217 | // expected by the debugger. |
| 218 | ASSERT_EQ(Assembler::kJSReturnSequenceLength, |
| 219 | masm_->SizeOfCodeGeneratedSince(&check_exit_codesize)); |
| 220 | #endif |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | |
| 225 | void FullCodeGenerator::Apply(Expression::Context context, Register reg) { |
| 226 | switch (context) { |
| 227 | case Expression::kUninitialized: |
| 228 | UNREACHABLE(); |
| 229 | |
| 230 | case Expression::kEffect: |
| 231 | // Nothing to do. |
| 232 | break; |
| 233 | |
| 234 | case Expression::kValue: |
| 235 | // Move value into place. |
| 236 | switch (location_) { |
| 237 | case kAccumulator: |
| 238 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 239 | break; |
| 240 | case kStack: |
| 241 | __ push(reg); |
| 242 | break; |
| 243 | } |
| 244 | break; |
| 245 | |
| 246 | case Expression::kTest: |
| 247 | // For simplicity we always test the accumulator register. |
| 248 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 249 | DoTest(context); |
| 250 | break; |
| 251 | |
| 252 | case Expression::kValueTest: |
| 253 | case Expression::kTestValue: |
| 254 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 255 | switch (location_) { |
| 256 | case kAccumulator: |
| 257 | break; |
| 258 | case kStack: |
| 259 | __ push(result_register()); |
| 260 | break; |
| 261 | } |
| 262 | DoTest(context); |
| 263 | break; |
| 264 | } |
| 265 | } |
| 266 | |
| 267 | |
| 268 | void FullCodeGenerator::Apply(Expression::Context context, Slot* slot) { |
| 269 | switch (context) { |
| 270 | case Expression::kUninitialized: |
| 271 | UNREACHABLE(); |
| 272 | case Expression::kEffect: |
| 273 | // Nothing to do. |
| 274 | break; |
| 275 | case Expression::kValue: { |
| 276 | MemOperand slot_operand = EmitSlotSearch(slot, result_register()); |
| 277 | switch (location_) { |
| 278 | case kAccumulator: |
| 279 | __ mov(result_register(), slot_operand); |
| 280 | break; |
| 281 | case kStack: |
| 282 | // Memory operands can be pushed directly. |
| 283 | __ push(slot_operand); |
| 284 | break; |
| 285 | } |
| 286 | break; |
| 287 | } |
| 288 | |
| 289 | case Expression::kTest: |
| 290 | // For simplicity we always test the accumulator register. |
| 291 | Move(result_register(), slot); |
| 292 | DoTest(context); |
| 293 | break; |
| 294 | |
| 295 | case Expression::kValueTest: |
| 296 | case Expression::kTestValue: |
| 297 | Move(result_register(), slot); |
| 298 | switch (location_) { |
| 299 | case kAccumulator: |
| 300 | break; |
| 301 | case kStack: |
| 302 | __ push(result_register()); |
| 303 | break; |
| 304 | } |
| 305 | DoTest(context); |
| 306 | break; |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | |
| 311 | void FullCodeGenerator::Apply(Expression::Context context, Literal* lit) { |
| 312 | switch (context) { |
| 313 | case Expression::kUninitialized: |
| 314 | UNREACHABLE(); |
| 315 | case Expression::kEffect: |
| 316 | // Nothing to do. |
| 317 | break; |
| 318 | case Expression::kValue: |
| 319 | switch (location_) { |
| 320 | case kAccumulator: |
| 321 | __ mov(result_register(), lit->handle()); |
| 322 | break; |
| 323 | case kStack: |
| 324 | // Immediates can be pushed directly. |
| 325 | __ push(Immediate(lit->handle())); |
| 326 | break; |
| 327 | } |
| 328 | break; |
| 329 | |
| 330 | case Expression::kTest: |
| 331 | // For simplicity we always test the accumulator register. |
| 332 | __ mov(result_register(), lit->handle()); |
| 333 | DoTest(context); |
| 334 | break; |
| 335 | |
| 336 | case Expression::kValueTest: |
| 337 | case Expression::kTestValue: |
| 338 | __ mov(result_register(), lit->handle()); |
| 339 | switch (location_) { |
| 340 | case kAccumulator: |
| 341 | break; |
| 342 | case kStack: |
| 343 | __ push(result_register()); |
| 344 | break; |
| 345 | } |
| 346 | DoTest(context); |
| 347 | break; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | |
| 352 | void FullCodeGenerator::ApplyTOS(Expression::Context context) { |
| 353 | switch (context) { |
| 354 | case Expression::kUninitialized: |
| 355 | UNREACHABLE(); |
| 356 | |
| 357 | case Expression::kEffect: |
| 358 | __ Drop(1); |
| 359 | break; |
| 360 | |
| 361 | case Expression::kValue: |
| 362 | switch (location_) { |
| 363 | case kAccumulator: |
| 364 | __ pop(result_register()); |
| 365 | break; |
| 366 | case kStack: |
| 367 | break; |
| 368 | } |
| 369 | break; |
| 370 | |
| 371 | case Expression::kTest: |
| 372 | // For simplicity we always test the accumulator register. |
| 373 | __ pop(result_register()); |
| 374 | DoTest(context); |
| 375 | break; |
| 376 | |
| 377 | case Expression::kValueTest: |
| 378 | case Expression::kTestValue: |
| 379 | switch (location_) { |
| 380 | case kAccumulator: |
| 381 | __ pop(result_register()); |
| 382 | break; |
| 383 | case kStack: |
| 384 | __ mov(result_register(), Operand(esp, 0)); |
| 385 | break; |
| 386 | } |
| 387 | DoTest(context); |
| 388 | break; |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | |
| 393 | void FullCodeGenerator::DropAndApply(int count, |
| 394 | Expression::Context context, |
| 395 | Register reg) { |
| 396 | ASSERT(count > 0); |
| 397 | ASSERT(!reg.is(esp)); |
| 398 | switch (context) { |
| 399 | case Expression::kUninitialized: |
| 400 | UNREACHABLE(); |
| 401 | |
| 402 | case Expression::kEffect: |
| 403 | __ Drop(count); |
| 404 | break; |
| 405 | |
| 406 | case Expression::kValue: |
| 407 | switch (location_) { |
| 408 | case kAccumulator: |
| 409 | __ Drop(count); |
| 410 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 411 | break; |
| 412 | case kStack: |
| 413 | if (count > 1) __ Drop(count - 1); |
| 414 | __ mov(Operand(esp, 0), reg); |
| 415 | break; |
| 416 | } |
| 417 | break; |
| 418 | |
| 419 | case Expression::kTest: |
| 420 | // For simplicity we always test the accumulator register. |
| 421 | __ Drop(count); |
| 422 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 423 | DoTest(context); |
| 424 | break; |
| 425 | |
| 426 | case Expression::kValueTest: |
| 427 | case Expression::kTestValue: |
| 428 | switch (location_) { |
| 429 | case kAccumulator: |
| 430 | __ Drop(count); |
| 431 | if (!reg.is(result_register())) __ mov(result_register(), reg); |
| 432 | break; |
| 433 | case kStack: |
| 434 | if (count > 1) __ Drop(count - 1); |
| 435 | __ mov(result_register(), reg); |
| 436 | __ mov(Operand(esp, 0), result_register()); |
| 437 | break; |
| 438 | } |
| 439 | DoTest(context); |
| 440 | break; |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 445 | void FullCodeGenerator::PrepareTest(Label* materialize_true, |
| 446 | Label* materialize_false, |
| 447 | Label** if_true, |
| 448 | Label** if_false) { |
| 449 | switch (context_) { |
| 450 | case Expression::kUninitialized: |
| 451 | UNREACHABLE(); |
| 452 | break; |
| 453 | case Expression::kEffect: |
| 454 | // In an effect context, the true and the false case branch to the |
| 455 | // same label. |
| 456 | *if_true = *if_false = materialize_true; |
| 457 | break; |
| 458 | case Expression::kValue: |
| 459 | *if_true = materialize_true; |
| 460 | *if_false = materialize_false; |
| 461 | break; |
| 462 | case Expression::kTest: |
| 463 | *if_true = true_label_; |
| 464 | *if_false = false_label_; |
| 465 | break; |
| 466 | case Expression::kValueTest: |
| 467 | *if_true = materialize_true; |
| 468 | *if_false = false_label_; |
| 469 | break; |
| 470 | case Expression::kTestValue: |
| 471 | *if_true = true_label_; |
| 472 | *if_false = materialize_false; |
| 473 | break; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 478 | void FullCodeGenerator::Apply(Expression::Context context, |
| 479 | Label* materialize_true, |
| 480 | Label* materialize_false) { |
| 481 | switch (context) { |
| 482 | case Expression::kUninitialized: |
| 483 | |
| 484 | case Expression::kEffect: |
| 485 | ASSERT_EQ(materialize_true, materialize_false); |
| 486 | __ bind(materialize_true); |
| 487 | break; |
| 488 | |
| 489 | case Expression::kValue: { |
| 490 | Label done; |
| 491 | switch (location_) { |
| 492 | case kAccumulator: |
| 493 | __ bind(materialize_true); |
| 494 | __ mov(result_register(), Factory::true_value()); |
| 495 | __ jmp(&done); |
| 496 | __ bind(materialize_false); |
| 497 | __ mov(result_register(), Factory::false_value()); |
| 498 | break; |
| 499 | case kStack: |
| 500 | __ bind(materialize_true); |
| 501 | __ push(Immediate(Factory::true_value())); |
| 502 | __ jmp(&done); |
| 503 | __ bind(materialize_false); |
| 504 | __ push(Immediate(Factory::false_value())); |
| 505 | break; |
| 506 | } |
| 507 | __ bind(&done); |
| 508 | break; |
| 509 | } |
| 510 | |
| 511 | case Expression::kTest: |
| 512 | break; |
| 513 | |
| 514 | case Expression::kValueTest: |
| 515 | __ bind(materialize_true); |
| 516 | switch (location_) { |
| 517 | case kAccumulator: |
| 518 | __ mov(result_register(), Factory::true_value()); |
| 519 | break; |
| 520 | case kStack: |
| 521 | __ push(Immediate(Factory::true_value())); |
| 522 | break; |
| 523 | } |
| 524 | __ jmp(true_label_); |
| 525 | break; |
| 526 | |
| 527 | case Expression::kTestValue: |
| 528 | __ bind(materialize_false); |
| 529 | switch (location_) { |
| 530 | case kAccumulator: |
| 531 | __ mov(result_register(), Factory::false_value()); |
| 532 | break; |
| 533 | case kStack: |
| 534 | __ push(Immediate(Factory::false_value())); |
| 535 | break; |
| 536 | } |
| 537 | __ jmp(false_label_); |
| 538 | break; |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 543 | // Convert constant control flow (true or false) to the result expected for |
| 544 | // a given expression context. |
| 545 | void FullCodeGenerator::Apply(Expression::Context context, bool flag) { |
| 546 | switch (context) { |
| 547 | case Expression::kUninitialized: |
| 548 | UNREACHABLE(); |
| 549 | break; |
| 550 | case Expression::kEffect: |
| 551 | break; |
| 552 | case Expression::kValue: { |
| 553 | Handle<Object> value = |
| 554 | flag ? Factory::true_value() : Factory::false_value(); |
| 555 | switch (location_) { |
| 556 | case kAccumulator: |
| 557 | __ mov(result_register(), value); |
| 558 | break; |
| 559 | case kStack: |
| 560 | __ push(Immediate(value)); |
| 561 | break; |
| 562 | } |
| 563 | break; |
| 564 | } |
| 565 | case Expression::kTest: |
| 566 | __ jmp(flag ? true_label_ : false_label_); |
| 567 | break; |
| 568 | case Expression::kTestValue: |
| 569 | switch (location_) { |
| 570 | case kAccumulator: |
| 571 | // If value is false it's needed. |
| 572 | if (!flag) __ mov(result_register(), Factory::false_value()); |
| 573 | break; |
| 574 | case kStack: |
| 575 | // If value is false it's needed. |
| 576 | if (!flag) __ push(Immediate(Factory::false_value())); |
| 577 | break; |
| 578 | } |
| 579 | __ jmp(flag ? true_label_ : false_label_); |
| 580 | break; |
| 581 | case Expression::kValueTest: |
| 582 | switch (location_) { |
| 583 | case kAccumulator: |
| 584 | // If value is true it's needed. |
| 585 | if (flag) __ mov(result_register(), Factory::true_value()); |
| 586 | break; |
| 587 | case kStack: |
| 588 | // If value is true it's needed. |
| 589 | if (flag) __ push(Immediate(Factory::true_value())); |
| 590 | break; |
| 591 | } |
| 592 | __ jmp(flag ? true_label_ : false_label_); |
| 593 | break; |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 598 | void FullCodeGenerator::DoTest(Expression::Context context) { |
| 599 | // The value to test is in the accumulator. If the value might be needed |
| 600 | // on the stack (value/test and test/value contexts with a stack location |
| 601 | // desired), then the value is already duplicated on the stack. |
| 602 | ASSERT_NE(NULL, true_label_); |
| 603 | ASSERT_NE(NULL, false_label_); |
| 604 | |
| 605 | // In value/test and test/value expression contexts with stack as the |
| 606 | // desired location, there is already an extra value on the stack. Use a |
| 607 | // label to discard it if unneeded. |
| 608 | Label discard; |
| 609 | Label* if_true = true_label_; |
| 610 | Label* if_false = false_label_; |
| 611 | switch (context) { |
| 612 | case Expression::kUninitialized: |
| 613 | case Expression::kEffect: |
| 614 | case Expression::kValue: |
| 615 | UNREACHABLE(); |
| 616 | case Expression::kTest: |
| 617 | break; |
| 618 | case Expression::kValueTest: |
| 619 | switch (location_) { |
| 620 | case kAccumulator: |
| 621 | break; |
| 622 | case kStack: |
| 623 | if_false = &discard; |
| 624 | break; |
| 625 | } |
| 626 | break; |
| 627 | case Expression::kTestValue: |
| 628 | switch (location_) { |
| 629 | case kAccumulator: |
| 630 | break; |
| 631 | case kStack: |
| 632 | if_true = &discard; |
| 633 | break; |
| 634 | } |
| 635 | break; |
| 636 | } |
| 637 | |
| 638 | // Emit the inlined tests assumed by the stub. |
| 639 | __ cmp(result_register(), Factory::undefined_value()); |
| 640 | __ j(equal, if_false); |
| 641 | __ cmp(result_register(), Factory::true_value()); |
| 642 | __ j(equal, if_true); |
| 643 | __ cmp(result_register(), Factory::false_value()); |
| 644 | __ j(equal, if_false); |
| 645 | ASSERT_EQ(0, kSmiTag); |
| 646 | __ test(result_register(), Operand(result_register())); |
| 647 | __ j(zero, if_false); |
| 648 | __ test(result_register(), Immediate(kSmiTagMask)); |
| 649 | __ j(zero, if_true); |
| 650 | |
| 651 | // Save a copy of the value if it may be needed and isn't already saved. |
| 652 | switch (context) { |
| 653 | case Expression::kUninitialized: |
| 654 | case Expression::kEffect: |
| 655 | case Expression::kValue: |
| 656 | UNREACHABLE(); |
| 657 | case Expression::kTest: |
| 658 | break; |
| 659 | case Expression::kValueTest: |
| 660 | switch (location_) { |
| 661 | case kAccumulator: |
| 662 | __ push(result_register()); |
| 663 | break; |
| 664 | case kStack: |
| 665 | break; |
| 666 | } |
| 667 | break; |
| 668 | case Expression::kTestValue: |
| 669 | switch (location_) { |
| 670 | case kAccumulator: |
| 671 | __ push(result_register()); |
| 672 | break; |
| 673 | case kStack: |
| 674 | break; |
| 675 | } |
| 676 | break; |
| 677 | } |
| 678 | |
| 679 | // Call the ToBoolean stub for all other cases. |
| 680 | ToBooleanStub stub; |
| 681 | __ push(result_register()); |
| 682 | __ CallStub(&stub); |
| 683 | __ test(eax, Operand(eax)); |
| 684 | |
| 685 | // The stub returns nonzero for true. Complete based on the context. |
| 686 | switch (context) { |
| 687 | case Expression::kUninitialized: |
| 688 | case Expression::kEffect: |
| 689 | case Expression::kValue: |
| 690 | UNREACHABLE(); |
| 691 | |
| 692 | case Expression::kTest: |
| 693 | __ j(not_zero, true_label_); |
| 694 | __ jmp(false_label_); |
| 695 | break; |
| 696 | |
| 697 | case Expression::kValueTest: |
| 698 | switch (location_) { |
| 699 | case kAccumulator: |
| 700 | __ j(zero, &discard); |
| 701 | __ pop(result_register()); |
| 702 | __ jmp(true_label_); |
| 703 | break; |
| 704 | case kStack: |
| 705 | __ j(not_zero, true_label_); |
| 706 | break; |
| 707 | } |
| 708 | __ bind(&discard); |
| 709 | __ Drop(1); |
| 710 | __ jmp(false_label_); |
| 711 | break; |
| 712 | |
| 713 | case Expression::kTestValue: |
| 714 | switch (location_) { |
| 715 | case kAccumulator: |
| 716 | __ j(not_zero, &discard); |
| 717 | __ pop(result_register()); |
| 718 | __ jmp(false_label_); |
| 719 | break; |
| 720 | case kStack: |
| 721 | __ j(zero, false_label_); |
| 722 | break; |
| 723 | } |
| 724 | __ bind(&discard); |
| 725 | __ Drop(1); |
| 726 | __ jmp(true_label_); |
| 727 | break; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | |
| 732 | MemOperand FullCodeGenerator::EmitSlotSearch(Slot* slot, Register scratch) { |
| 733 | switch (slot->type()) { |
| 734 | case Slot::PARAMETER: |
| 735 | case Slot::LOCAL: |
| 736 | return Operand(ebp, SlotOffset(slot)); |
| 737 | case Slot::CONTEXT: { |
| 738 | int context_chain_length = |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 739 | scope()->ContextChainLength(slot->var()->scope()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 740 | __ LoadContext(scratch, context_chain_length); |
| 741 | return CodeGenerator::ContextOperand(scratch, slot->index()); |
| 742 | } |
| 743 | case Slot::LOOKUP: |
| 744 | UNREACHABLE(); |
| 745 | } |
| 746 | UNREACHABLE(); |
| 747 | return Operand(eax, 0); |
| 748 | } |
| 749 | |
| 750 | |
| 751 | void FullCodeGenerator::Move(Register destination, Slot* source) { |
| 752 | MemOperand location = EmitSlotSearch(source, destination); |
| 753 | __ mov(destination, location); |
| 754 | } |
| 755 | |
| 756 | |
| 757 | void FullCodeGenerator::Move(Slot* dst, |
| 758 | Register src, |
| 759 | Register scratch1, |
| 760 | Register scratch2) { |
| 761 | ASSERT(dst->type() != Slot::LOOKUP); // Not yet implemented. |
| 762 | ASSERT(!scratch1.is(src) && !scratch2.is(src)); |
| 763 | MemOperand location = EmitSlotSearch(dst, scratch1); |
| 764 | __ mov(location, src); |
| 765 | // Emit the write barrier code if the location is in the heap. |
| 766 | if (dst->type() == Slot::CONTEXT) { |
| 767 | int offset = FixedArray::kHeaderSize + dst->index() * kPointerSize; |
| 768 | __ RecordWrite(scratch1, offset, src, scratch2); |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 773 | void FullCodeGenerator::EmitDeclaration(Variable* variable, |
| 774 | Variable::Mode mode, |
| 775 | FunctionLiteral* function) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 776 | Comment cmnt(masm_, "[ Declaration"); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 777 | ASSERT(variable != NULL); // Must have been resolved. |
| 778 | Slot* slot = variable->slot(); |
| 779 | Property* prop = variable->AsProperty(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 780 | if (slot != NULL) { |
| 781 | switch (slot->type()) { |
| 782 | case Slot::PARAMETER: |
| 783 | case Slot::LOCAL: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 784 | if (mode == Variable::CONST) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 785 | __ mov(Operand(ebp, SlotOffset(slot)), |
| 786 | Immediate(Factory::the_hole_value())); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 787 | } else if (function != NULL) { |
| 788 | VisitForValue(function, kAccumulator); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 789 | __ mov(Operand(ebp, SlotOffset(slot)), result_register()); |
| 790 | } |
| 791 | break; |
| 792 | |
| 793 | case Slot::CONTEXT: |
| 794 | // We bypass the general EmitSlotSearch because we know more about |
| 795 | // this specific context. |
| 796 | |
| 797 | // The variable in the decl always resides in the current context. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 798 | ASSERT_EQ(0, scope()->ContextChainLength(variable->scope())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 799 | if (FLAG_debug_code) { |
| 800 | // Check if we have the correct context pointer. |
| 801 | __ mov(ebx, |
| 802 | CodeGenerator::ContextOperand(esi, Context::FCONTEXT_INDEX)); |
| 803 | __ cmp(ebx, Operand(esi)); |
| 804 | __ Check(equal, "Unexpected declaration in current context."); |
| 805 | } |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 806 | if (mode == Variable::CONST) { |
| 807 | __ mov(CodeGenerator::ContextOperand(esi, slot->index()), |
| 808 | Immediate(Factory::the_hole_value())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 809 | // No write barrier since the hole value is in old space. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 810 | } else if (function != NULL) { |
| 811 | VisitForValue(function, kAccumulator); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 812 | __ mov(CodeGenerator::ContextOperand(esi, slot->index()), |
| 813 | result_register()); |
| 814 | int offset = Context::SlotOffset(slot->index()); |
| 815 | __ mov(ebx, esi); |
| 816 | __ RecordWrite(ebx, offset, result_register(), ecx); |
| 817 | } |
| 818 | break; |
| 819 | |
| 820 | case Slot::LOOKUP: { |
| 821 | __ push(esi); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 822 | __ push(Immediate(variable->name())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 823 | // Declaration nodes are always introduced in one of two modes. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 824 | ASSERT(mode == Variable::VAR || mode == Variable::CONST); |
| 825 | PropertyAttributes attr = (mode == Variable::VAR) ? NONE : READ_ONLY; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 826 | __ push(Immediate(Smi::FromInt(attr))); |
| 827 | // Push initial value, if any. |
| 828 | // Note: For variables we must not push an initial value (such as |
| 829 | // 'undefined') because we may have a (legal) redeclaration and we |
| 830 | // must not destroy the current value. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 831 | if (mode == Variable::CONST) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 832 | __ push(Immediate(Factory::the_hole_value())); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 833 | } else if (function != NULL) { |
| 834 | VisitForValue(function, kStack); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 835 | } else { |
| 836 | __ push(Immediate(Smi::FromInt(0))); // No initial value! |
| 837 | } |
| 838 | __ CallRuntime(Runtime::kDeclareContextSlot, 4); |
| 839 | break; |
| 840 | } |
| 841 | } |
| 842 | |
| 843 | } else if (prop != NULL) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 844 | if (function != NULL || mode == Variable::CONST) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 845 | // We are declaring a function or constant that rewrites to a |
| 846 | // property. Use (keyed) IC to set the initial value. |
| 847 | VisitForValue(prop->obj(), kStack); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 848 | if (function != NULL) { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 849 | VisitForValue(prop->key(), kStack); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 850 | VisitForValue(function, kAccumulator); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 851 | __ pop(ecx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 852 | } else { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 853 | VisitForValue(prop->key(), kAccumulator); |
| 854 | __ mov(ecx, result_register()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 855 | __ mov(result_register(), Factory::the_hole_value()); |
| 856 | } |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 857 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 858 | |
| 859 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize)); |
| 860 | __ call(ic, RelocInfo::CODE_TARGET); |
| 861 | // Absence of a test eax instruction following the call |
| 862 | // indicates that none of the load was inlined. |
| 863 | __ nop(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 864 | } |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 869 | void FullCodeGenerator::VisitDeclaration(Declaration* decl) { |
| 870 | EmitDeclaration(decl->proxy()->var(), decl->mode(), decl->fun()); |
| 871 | } |
| 872 | |
| 873 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 874 | void FullCodeGenerator::DeclareGlobals(Handle<FixedArray> pairs) { |
| 875 | // Call the runtime to declare the globals. |
| 876 | __ push(esi); // The context is the first argument. |
| 877 | __ push(Immediate(pairs)); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 878 | __ push(Immediate(Smi::FromInt(is_eval() ? 1 : 0))); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 879 | __ CallRuntime(Runtime::kDeclareGlobals, 3); |
| 880 | // Return value is ignored. |
| 881 | } |
| 882 | |
| 883 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 884 | void FullCodeGenerator::VisitSwitchStatement(SwitchStatement* stmt) { |
| 885 | Comment cmnt(masm_, "[ SwitchStatement"); |
| 886 | Breakable nested_statement(this, stmt); |
| 887 | SetStatementPosition(stmt); |
| 888 | // Keep the switch value on the stack until a case matches. |
| 889 | VisitForValue(stmt->tag(), kStack); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 890 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 891 | ZoneList<CaseClause*>* clauses = stmt->cases(); |
| 892 | CaseClause* default_clause = NULL; // Can occur anywhere in the list. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 893 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 894 | Label next_test; // Recycled for each test. |
| 895 | // Compile all the tests with branches to their bodies. |
| 896 | for (int i = 0; i < clauses->length(); i++) { |
| 897 | CaseClause* clause = clauses->at(i); |
| 898 | // The default is not a test, but remember it as final fall through. |
| 899 | if (clause->is_default()) { |
| 900 | default_clause = clause; |
| 901 | continue; |
| 902 | } |
| 903 | |
| 904 | Comment cmnt(masm_, "[ Case comparison"); |
| 905 | __ bind(&next_test); |
| 906 | next_test.Unuse(); |
| 907 | |
| 908 | // Compile the label expression. |
| 909 | VisitForValue(clause->label(), kAccumulator); |
| 910 | |
| 911 | // Perform the comparison as if via '==='. The comparison stub expects |
| 912 | // the smi vs. smi case to be handled before it is called. |
| 913 | Label slow_case; |
| 914 | __ mov(edx, Operand(esp, 0)); // Switch value. |
| 915 | __ mov(ecx, edx); |
| 916 | __ or_(ecx, Operand(eax)); |
| 917 | __ test(ecx, Immediate(kSmiTagMask)); |
| 918 | __ j(not_zero, &slow_case, not_taken); |
| 919 | __ cmp(edx, Operand(eax)); |
| 920 | __ j(not_equal, &next_test); |
| 921 | __ Drop(1); // Switch value is no longer needed. |
| 922 | __ jmp(clause->body_target()->entry_label()); |
| 923 | |
| 924 | __ bind(&slow_case); |
| 925 | CompareStub stub(equal, true); |
| 926 | __ CallStub(&stub); |
| 927 | __ test(eax, Operand(eax)); |
| 928 | __ j(not_equal, &next_test); |
| 929 | __ Drop(1); // Switch value is no longer needed. |
| 930 | __ jmp(clause->body_target()->entry_label()); |
| 931 | } |
| 932 | |
| 933 | // Discard the test value and jump to the default if present, otherwise to |
| 934 | // the end of the statement. |
| 935 | __ bind(&next_test); |
| 936 | __ Drop(1); // Switch value is no longer needed. |
| 937 | if (default_clause == NULL) { |
| 938 | __ jmp(nested_statement.break_target()); |
| 939 | } else { |
| 940 | __ jmp(default_clause->body_target()->entry_label()); |
| 941 | } |
| 942 | |
| 943 | // Compile all the case bodies. |
| 944 | for (int i = 0; i < clauses->length(); i++) { |
| 945 | Comment cmnt(masm_, "[ Case body"); |
| 946 | CaseClause* clause = clauses->at(i); |
| 947 | __ bind(clause->body_target()->entry_label()); |
| 948 | VisitStatements(clause->statements()); |
| 949 | } |
| 950 | |
| 951 | __ bind(nested_statement.break_target()); |
| 952 | } |
| 953 | |
| 954 | |
| 955 | void FullCodeGenerator::VisitForInStatement(ForInStatement* stmt) { |
| 956 | Comment cmnt(masm_, "[ ForInStatement"); |
| 957 | SetStatementPosition(stmt); |
| 958 | |
| 959 | Label loop, exit; |
| 960 | ForIn loop_statement(this, stmt); |
| 961 | increment_loop_depth(); |
| 962 | |
| 963 | // Get the object to enumerate over. Both SpiderMonkey and JSC |
| 964 | // ignore null and undefined in contrast to the specification; see |
| 965 | // ECMA-262 section 12.6.4. |
| 966 | VisitForValue(stmt->enumerable(), kAccumulator); |
| 967 | __ cmp(eax, Factory::undefined_value()); |
| 968 | __ j(equal, &exit); |
| 969 | __ cmp(eax, Factory::null_value()); |
| 970 | __ j(equal, &exit); |
| 971 | |
| 972 | // Convert the object to a JS object. |
| 973 | Label convert, done_convert; |
| 974 | __ test(eax, Immediate(kSmiTagMask)); |
| 975 | __ j(zero, &convert); |
| 976 | __ CmpObjectType(eax, FIRST_JS_OBJECT_TYPE, ecx); |
| 977 | __ j(above_equal, &done_convert); |
| 978 | __ bind(&convert); |
| 979 | __ push(eax); |
| 980 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 981 | __ bind(&done_convert); |
| 982 | __ push(eax); |
| 983 | |
| 984 | // TODO(kasperl): Check cache validity in generated code. This is a |
| 985 | // fast case for the JSObject::IsSimpleEnum cache validity |
| 986 | // checks. If we cannot guarantee cache validity, call the runtime |
| 987 | // system to check cache validity or get the property names in a |
| 988 | // fixed array. |
| 989 | |
| 990 | // Get the set of properties to enumerate. |
| 991 | __ push(eax); // Duplicate the enumerable object on the stack. |
| 992 | __ CallRuntime(Runtime::kGetPropertyNamesFast, 1); |
| 993 | |
| 994 | // If we got a map from the runtime call, we can do a fast |
| 995 | // modification check. Otherwise, we got a fixed array, and we have |
| 996 | // to do a slow check. |
| 997 | Label fixed_array; |
| 998 | __ cmp(FieldOperand(eax, HeapObject::kMapOffset), Factory::meta_map()); |
| 999 | __ j(not_equal, &fixed_array); |
| 1000 | |
| 1001 | // We got a map in register eax. Get the enumeration cache from it. |
| 1002 | __ mov(ecx, FieldOperand(eax, Map::kInstanceDescriptorsOffset)); |
| 1003 | __ mov(ecx, FieldOperand(ecx, DescriptorArray::kEnumerationIndexOffset)); |
| 1004 | __ mov(edx, FieldOperand(ecx, DescriptorArray::kEnumCacheBridgeCacheOffset)); |
| 1005 | |
| 1006 | // Setup the four remaining stack slots. |
| 1007 | __ push(eax); // Map. |
| 1008 | __ push(edx); // Enumeration cache. |
| 1009 | __ mov(eax, FieldOperand(edx, FixedArray::kLengthOffset)); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1010 | __ push(eax); // Enumeration cache length (as smi). |
| 1011 | __ push(Immediate(Smi::FromInt(0))); // Initial index. |
| 1012 | __ jmp(&loop); |
| 1013 | |
| 1014 | // We got a fixed array in register eax. Iterate through that. |
| 1015 | __ bind(&fixed_array); |
| 1016 | __ push(Immediate(Smi::FromInt(0))); // Map (0) - force slow check. |
| 1017 | __ push(eax); |
| 1018 | __ mov(eax, FieldOperand(eax, FixedArray::kLengthOffset)); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1019 | __ push(eax); // Fixed array length (as smi). |
| 1020 | __ push(Immediate(Smi::FromInt(0))); // Initial index. |
| 1021 | |
| 1022 | // Generate code for doing the condition check. |
| 1023 | __ bind(&loop); |
| 1024 | __ mov(eax, Operand(esp, 0 * kPointerSize)); // Get the current index. |
| 1025 | __ cmp(eax, Operand(esp, 1 * kPointerSize)); // Compare to the array length. |
| 1026 | __ j(above_equal, loop_statement.break_target()); |
| 1027 | |
| 1028 | // Get the current entry of the array into register ebx. |
| 1029 | __ mov(ebx, Operand(esp, 2 * kPointerSize)); |
| 1030 | __ mov(ebx, FieldOperand(ebx, eax, times_2, FixedArray::kHeaderSize)); |
| 1031 | |
| 1032 | // Get the expected map from the stack or a zero map in the |
| 1033 | // permanent slow case into register edx. |
| 1034 | __ mov(edx, Operand(esp, 3 * kPointerSize)); |
| 1035 | |
| 1036 | // Check if the expected map still matches that of the enumerable. |
| 1037 | // If not, we have to filter the key. |
| 1038 | Label update_each; |
| 1039 | __ mov(ecx, Operand(esp, 4 * kPointerSize)); |
| 1040 | __ cmp(edx, FieldOperand(ecx, HeapObject::kMapOffset)); |
| 1041 | __ j(equal, &update_each); |
| 1042 | |
| 1043 | // Convert the entry to a string or null if it isn't a property |
| 1044 | // anymore. If the property has been removed while iterating, we |
| 1045 | // just skip it. |
| 1046 | __ push(ecx); // Enumerable. |
| 1047 | __ push(ebx); // Current entry. |
| 1048 | __ InvokeBuiltin(Builtins::FILTER_KEY, CALL_FUNCTION); |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 1049 | __ test(eax, Operand(eax)); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1050 | __ j(equal, loop_statement.continue_target()); |
| 1051 | __ mov(ebx, Operand(eax)); |
| 1052 | |
| 1053 | // Update the 'each' property or variable from the possibly filtered |
| 1054 | // entry in register ebx. |
| 1055 | __ bind(&update_each); |
| 1056 | __ mov(result_register(), ebx); |
| 1057 | // Perform the assignment as if via '='. |
| 1058 | EmitAssignment(stmt->each()); |
| 1059 | |
| 1060 | // Generate code for the body of the loop. |
| 1061 | Label stack_limit_hit, stack_check_done; |
| 1062 | Visit(stmt->body()); |
| 1063 | |
| 1064 | __ StackLimitCheck(&stack_limit_hit); |
| 1065 | __ bind(&stack_check_done); |
| 1066 | |
| 1067 | // Generate code for going to the next element by incrementing the |
| 1068 | // index (smi) stored on top of the stack. |
| 1069 | __ bind(loop_statement.continue_target()); |
| 1070 | __ add(Operand(esp, 0 * kPointerSize), Immediate(Smi::FromInt(1))); |
| 1071 | __ jmp(&loop); |
| 1072 | |
| 1073 | // Slow case for the stack limit check. |
| 1074 | StackCheckStub stack_check_stub; |
| 1075 | __ bind(&stack_limit_hit); |
| 1076 | __ CallStub(&stack_check_stub); |
| 1077 | __ jmp(&stack_check_done); |
| 1078 | |
| 1079 | // Remove the pointers stored on the stack. |
| 1080 | __ bind(loop_statement.break_target()); |
| 1081 | __ add(Operand(esp), Immediate(5 * kPointerSize)); |
| 1082 | |
| 1083 | // Exit and decrement the loop depth. |
| 1084 | __ bind(&exit); |
| 1085 | decrement_loop_depth(); |
| 1086 | } |
| 1087 | |
| 1088 | |
| 1089 | void FullCodeGenerator::EmitNewClosure(Handle<SharedFunctionInfo> info) { |
| 1090 | // Use the fast case closure allocation code that allocates in new |
| 1091 | // space for nested functions that don't need literals cloning. |
| 1092 | if (scope()->is_function_scope() && info->num_literals() == 0) { |
| 1093 | FastNewClosureStub stub; |
| 1094 | __ push(Immediate(info)); |
| 1095 | __ CallStub(&stub); |
| 1096 | } else { |
| 1097 | __ push(esi); |
| 1098 | __ push(Immediate(info)); |
| 1099 | __ CallRuntime(Runtime::kNewClosure, 2); |
| 1100 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1101 | Apply(context_, eax); |
| 1102 | } |
| 1103 | |
| 1104 | |
| 1105 | void FullCodeGenerator::VisitVariableProxy(VariableProxy* expr) { |
| 1106 | Comment cmnt(masm_, "[ VariableProxy"); |
| 1107 | EmitVariableLoad(expr->var(), context_); |
| 1108 | } |
| 1109 | |
| 1110 | |
| 1111 | void FullCodeGenerator::EmitVariableLoad(Variable* var, |
| 1112 | Expression::Context context) { |
| 1113 | // Four cases: non-this global variables, lookup slots, all other |
| 1114 | // types of slots, and parameters that rewrite to explicit property |
| 1115 | // accesses on the arguments object. |
| 1116 | Slot* slot = var->slot(); |
| 1117 | Property* property = var->AsProperty(); |
| 1118 | |
| 1119 | if (var->is_global() && !var->is_this()) { |
| 1120 | Comment cmnt(masm_, "Global variable"); |
| 1121 | // Use inline caching. Variable name is passed in ecx and the global |
| 1122 | // object on the stack. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1123 | __ mov(eax, CodeGenerator::GlobalObject()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1124 | __ mov(ecx, var->name()); |
| 1125 | Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize)); |
| 1126 | __ call(ic, RelocInfo::CODE_TARGET_CONTEXT); |
| 1127 | // By emitting a nop we make sure that we do not have a test eax |
| 1128 | // instruction after the call it is treated specially by the LoadIC code |
| 1129 | // Remember that the assembler may choose to do peephole optimization |
| 1130 | // (eg, push/pop elimination). |
| 1131 | __ nop(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1132 | Apply(context, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1133 | |
| 1134 | } else if (slot != NULL && slot->type() == Slot::LOOKUP) { |
| 1135 | Comment cmnt(masm_, "Lookup slot"); |
| 1136 | __ push(esi); // Context. |
| 1137 | __ push(Immediate(var->name())); |
| 1138 | __ CallRuntime(Runtime::kLoadContextSlot, 2); |
| 1139 | Apply(context, eax); |
| 1140 | |
| 1141 | } else if (slot != NULL) { |
| 1142 | Comment cmnt(masm_, (slot->type() == Slot::CONTEXT) |
| 1143 | ? "Context slot" |
| 1144 | : "Stack slot"); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1145 | if (var->mode() == Variable::CONST) { |
| 1146 | // Constants may be the hole value if they have not been initialized. |
| 1147 | // Unhole them. |
| 1148 | Label done; |
| 1149 | MemOperand slot_operand = EmitSlotSearch(slot, eax); |
| 1150 | __ mov(eax, slot_operand); |
| 1151 | __ cmp(eax, Factory::the_hole_value()); |
| 1152 | __ j(not_equal, &done); |
| 1153 | __ mov(eax, Factory::undefined_value()); |
| 1154 | __ bind(&done); |
| 1155 | Apply(context, eax); |
| 1156 | } else { |
| 1157 | Apply(context, slot); |
| 1158 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1159 | |
| 1160 | } else { |
| 1161 | Comment cmnt(masm_, "Rewritten parameter"); |
| 1162 | ASSERT_NOT_NULL(property); |
| 1163 | // Rewritten parameter accesses are of the form "slot[literal]". |
| 1164 | |
| 1165 | // Assert that the object is in a slot. |
| 1166 | Variable* object_var = property->obj()->AsVariableProxy()->AsVariable(); |
| 1167 | ASSERT_NOT_NULL(object_var); |
| 1168 | Slot* object_slot = object_var->slot(); |
| 1169 | ASSERT_NOT_NULL(object_slot); |
| 1170 | |
| 1171 | // Load the object. |
| 1172 | MemOperand object_loc = EmitSlotSearch(object_slot, eax); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1173 | __ mov(edx, object_loc); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1174 | |
| 1175 | // Assert that the key is a smi. |
| 1176 | Literal* key_literal = property->key()->AsLiteral(); |
| 1177 | ASSERT_NOT_NULL(key_literal); |
| 1178 | ASSERT(key_literal->handle()->IsSmi()); |
| 1179 | |
| 1180 | // Load the key. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1181 | __ mov(eax, Immediate(key_literal->handle())); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1182 | |
| 1183 | // Do a keyed property load. |
| 1184 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); |
| 1185 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1186 | // Notice: We must not have a "test eax, ..." instruction after the |
| 1187 | // call. It is treated specially by the LoadIC code. |
| 1188 | __ nop(); |
| 1189 | // Drop key and object left on the stack by IC. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1190 | Apply(context, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | |
| 1195 | void FullCodeGenerator::VisitRegExpLiteral(RegExpLiteral* expr) { |
| 1196 | Comment cmnt(masm_, "[ RegExpLiteral"); |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1197 | Label materialized; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1198 | // Registers will be used as follows: |
| 1199 | // edi = JS function. |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1200 | // ecx = literals array. |
| 1201 | // ebx = regexp literal. |
| 1202 | // eax = regexp literal clone. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1203 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1204 | __ mov(ecx, FieldOperand(edi, JSFunction::kLiteralsOffset)); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1205 | int literal_offset = |
| 1206 | FixedArray::kHeaderSize + expr->literal_index() * kPointerSize; |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1207 | __ mov(ebx, FieldOperand(ecx, literal_offset)); |
| 1208 | __ cmp(ebx, Factory::undefined_value()); |
| 1209 | __ j(not_equal, &materialized); |
| 1210 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1211 | // Create regexp literal using runtime function |
| 1212 | // Result will be in eax. |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1213 | __ push(ecx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1214 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 1215 | __ push(Immediate(expr->pattern())); |
| 1216 | __ push(Immediate(expr->flags())); |
| 1217 | __ CallRuntime(Runtime::kMaterializeRegExpLiteral, 4); |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 1218 | __ mov(ebx, eax); |
| 1219 | |
| 1220 | __ bind(&materialized); |
| 1221 | int size = JSRegExp::kSize + JSRegExp::kInObjectFieldCount * kPointerSize; |
| 1222 | Label allocated, runtime_allocate; |
| 1223 | __ AllocateInNewSpace(size, eax, ecx, edx, &runtime_allocate, TAG_OBJECT); |
| 1224 | __ jmp(&allocated); |
| 1225 | |
| 1226 | __ bind(&runtime_allocate); |
| 1227 | __ push(ebx); |
| 1228 | __ push(Immediate(Smi::FromInt(size))); |
| 1229 | __ CallRuntime(Runtime::kAllocateInNewSpace, 1); |
| 1230 | __ pop(ebx); |
| 1231 | |
| 1232 | __ bind(&allocated); |
| 1233 | // Copy the content into the newly allocated memory. |
| 1234 | // (Unroll copy loop once for better throughput). |
| 1235 | for (int i = 0; i < size - kPointerSize; i += 2 * kPointerSize) { |
| 1236 | __ mov(edx, FieldOperand(ebx, i)); |
| 1237 | __ mov(ecx, FieldOperand(ebx, i + kPointerSize)); |
| 1238 | __ mov(FieldOperand(eax, i), edx); |
| 1239 | __ mov(FieldOperand(eax, i + kPointerSize), ecx); |
| 1240 | } |
| 1241 | if ((size % (2 * kPointerSize)) != 0) { |
| 1242 | __ mov(edx, FieldOperand(ebx, size - kPointerSize)); |
| 1243 | __ mov(FieldOperand(eax, size - kPointerSize), edx); |
| 1244 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1245 | Apply(context_, eax); |
| 1246 | } |
| 1247 | |
| 1248 | |
| 1249 | void FullCodeGenerator::VisitObjectLiteral(ObjectLiteral* expr) { |
| 1250 | Comment cmnt(masm_, "[ ObjectLiteral"); |
| 1251 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1252 | __ push(FieldOperand(edi, JSFunction::kLiteralsOffset)); |
| 1253 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 1254 | __ push(Immediate(expr->constant_properties())); |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 1255 | __ push(Immediate(Smi::FromInt(expr->fast_elements() ? 1 : 0))); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1256 | if (expr->depth() > 1) { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 1257 | __ CallRuntime(Runtime::kCreateObjectLiteral, 4); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1258 | } else { |
vegorov@chromium.org | f837290 | 2010-03-15 10:26:20 +0000 | [diff] [blame] | 1259 | __ CallRuntime(Runtime::kCreateObjectLiteralShallow, 4); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | // If result_saved is true the result is on top of the stack. If |
| 1263 | // result_saved is false the result is in eax. |
| 1264 | bool result_saved = false; |
| 1265 | |
| 1266 | for (int i = 0; i < expr->properties()->length(); i++) { |
| 1267 | ObjectLiteral::Property* property = expr->properties()->at(i); |
| 1268 | if (property->IsCompileTimeValue()) continue; |
| 1269 | |
| 1270 | Literal* key = property->key(); |
| 1271 | Expression* value = property->value(); |
| 1272 | if (!result_saved) { |
| 1273 | __ push(eax); // Save result on the stack |
| 1274 | result_saved = true; |
| 1275 | } |
| 1276 | switch (property->kind()) { |
| 1277 | case ObjectLiteral::Property::MATERIALIZED_LITERAL: |
| 1278 | ASSERT(!CompileTimeValue::IsCompileTimeValue(value)); |
| 1279 | // Fall through. |
| 1280 | case ObjectLiteral::Property::COMPUTED: |
| 1281 | if (key->handle()->IsSymbol()) { |
| 1282 | VisitForValue(value, kAccumulator); |
| 1283 | __ mov(ecx, Immediate(key->handle())); |
| 1284 | __ mov(edx, Operand(esp, 0)); |
| 1285 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 1286 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1287 | __ nop(); |
| 1288 | break; |
| 1289 | } |
| 1290 | // Fall through. |
| 1291 | case ObjectLiteral::Property::PROTOTYPE: |
| 1292 | __ push(Operand(esp, 0)); // Duplicate receiver. |
| 1293 | VisitForValue(key, kStack); |
| 1294 | VisitForValue(value, kStack); |
| 1295 | __ CallRuntime(Runtime::kSetProperty, 3); |
| 1296 | break; |
| 1297 | case ObjectLiteral::Property::SETTER: |
| 1298 | case ObjectLiteral::Property::GETTER: |
| 1299 | __ push(Operand(esp, 0)); // Duplicate receiver. |
| 1300 | VisitForValue(key, kStack); |
| 1301 | __ push(Immediate(property->kind() == ObjectLiteral::Property::SETTER ? |
| 1302 | Smi::FromInt(1) : |
| 1303 | Smi::FromInt(0))); |
| 1304 | VisitForValue(value, kStack); |
| 1305 | __ CallRuntime(Runtime::kDefineAccessor, 4); |
| 1306 | break; |
| 1307 | default: UNREACHABLE(); |
| 1308 | } |
| 1309 | } |
| 1310 | |
| 1311 | if (result_saved) { |
| 1312 | ApplyTOS(context_); |
| 1313 | } else { |
| 1314 | Apply(context_, eax); |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | |
| 1319 | void FullCodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) { |
| 1320 | Comment cmnt(masm_, "[ ArrayLiteral"); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1321 | |
| 1322 | ZoneList<Expression*>* subexprs = expr->values(); |
| 1323 | int length = subexprs->length(); |
| 1324 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1325 | __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1326 | __ push(FieldOperand(ebx, JSFunction::kLiteralsOffset)); |
| 1327 | __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
| 1328 | __ push(Immediate(expr->constant_elements())); |
| 1329 | if (expr->depth() > 1) { |
| 1330 | __ CallRuntime(Runtime::kCreateArrayLiteral, 3); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1331 | } else if (length > FastCloneShallowArrayStub::kMaximumLength) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1332 | __ CallRuntime(Runtime::kCreateArrayLiteralShallow, 3); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1333 | } else { |
| 1334 | FastCloneShallowArrayStub stub(length); |
| 1335 | __ CallStub(&stub); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1336 | } |
| 1337 | |
| 1338 | bool result_saved = false; // Is the result saved to the stack? |
| 1339 | |
| 1340 | // Emit code to evaluate all the non-constant subexpressions and to store |
| 1341 | // them into the newly cloned array. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1342 | for (int i = 0; i < length; i++) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1343 | Expression* subexpr = subexprs->at(i); |
| 1344 | // If the subexpression is a literal or a simple materialized literal it |
| 1345 | // is already set in the cloned array. |
| 1346 | if (subexpr->AsLiteral() != NULL || |
| 1347 | CompileTimeValue::IsCompileTimeValue(subexpr)) { |
| 1348 | continue; |
| 1349 | } |
| 1350 | |
| 1351 | if (!result_saved) { |
| 1352 | __ push(eax); |
| 1353 | result_saved = true; |
| 1354 | } |
| 1355 | VisitForValue(subexpr, kAccumulator); |
| 1356 | |
| 1357 | // Store the subexpression value in the array's elements. |
| 1358 | __ mov(ebx, Operand(esp, 0)); // Copy of array literal. |
| 1359 | __ mov(ebx, FieldOperand(ebx, JSObject::kElementsOffset)); |
| 1360 | int offset = FixedArray::kHeaderSize + (i * kPointerSize); |
| 1361 | __ mov(FieldOperand(ebx, offset), result_register()); |
| 1362 | |
| 1363 | // Update the write barrier for the array store. |
| 1364 | __ RecordWrite(ebx, offset, result_register(), ecx); |
| 1365 | } |
| 1366 | |
| 1367 | if (result_saved) { |
| 1368 | ApplyTOS(context_); |
| 1369 | } else { |
| 1370 | Apply(context_, eax); |
| 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1375 | void FullCodeGenerator::VisitAssignment(Assignment* expr) { |
| 1376 | Comment cmnt(masm_, "[ Assignment"); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1377 | // Invalid left-hand sides are rewritten to have a 'throw ReferenceError' |
| 1378 | // on the left-hand side. |
| 1379 | if (!expr->target()->IsValidLeftHandSide()) { |
| 1380 | VisitForEffect(expr->target()); |
| 1381 | return; |
| 1382 | } |
| 1383 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1384 | // Left-hand side can only be a property, a global or a (parameter or local) |
| 1385 | // slot. Variables with rewrite to .arguments are treated as KEYED_PROPERTY. |
| 1386 | enum LhsKind { VARIABLE, NAMED_PROPERTY, KEYED_PROPERTY }; |
| 1387 | LhsKind assign_type = VARIABLE; |
| 1388 | Property* prop = expr->target()->AsProperty(); |
| 1389 | if (prop != NULL) { |
| 1390 | assign_type = |
| 1391 | (prop->key()->IsPropertyName()) ? NAMED_PROPERTY : KEYED_PROPERTY; |
| 1392 | } |
| 1393 | |
| 1394 | // Evaluate LHS expression. |
| 1395 | switch (assign_type) { |
| 1396 | case VARIABLE: |
| 1397 | // Nothing to do here. |
| 1398 | break; |
| 1399 | case NAMED_PROPERTY: |
| 1400 | if (expr->is_compound()) { |
| 1401 | // We need the receiver both on the stack and in the accumulator. |
| 1402 | VisitForValue(prop->obj(), kAccumulator); |
| 1403 | __ push(result_register()); |
| 1404 | } else { |
| 1405 | VisitForValue(prop->obj(), kStack); |
| 1406 | } |
| 1407 | break; |
| 1408 | case KEYED_PROPERTY: |
| 1409 | if (expr->is_compound()) { |
| 1410 | VisitForValue(prop->obj(), kStack); |
| 1411 | VisitForValue(prop->key(), kAccumulator); |
| 1412 | __ mov(edx, Operand(esp, 0)); |
| 1413 | __ push(eax); |
| 1414 | } else { |
| 1415 | VisitForValue(prop->obj(), kStack); |
| 1416 | VisitForValue(prop->key(), kStack); |
| 1417 | } |
| 1418 | break; |
| 1419 | } |
| 1420 | |
| 1421 | // If we have a compound assignment: Get value of LHS expression and |
| 1422 | // store in on top of the stack. |
| 1423 | if (expr->is_compound()) { |
| 1424 | Location saved_location = location_; |
| 1425 | location_ = kStack; |
| 1426 | switch (assign_type) { |
| 1427 | case VARIABLE: |
| 1428 | EmitVariableLoad(expr->target()->AsVariableProxy()->var(), |
| 1429 | Expression::kValue); |
| 1430 | break; |
| 1431 | case NAMED_PROPERTY: |
| 1432 | EmitNamedPropertyLoad(prop); |
| 1433 | __ push(result_register()); |
| 1434 | break; |
| 1435 | case KEYED_PROPERTY: |
| 1436 | EmitKeyedPropertyLoad(prop); |
| 1437 | __ push(result_register()); |
| 1438 | break; |
| 1439 | } |
| 1440 | location_ = saved_location; |
| 1441 | } |
| 1442 | |
| 1443 | // Evaluate RHS expression. |
| 1444 | Expression* rhs = expr->value(); |
| 1445 | VisitForValue(rhs, kAccumulator); |
| 1446 | |
| 1447 | // If we have a compound assignment: Apply operator. |
| 1448 | if (expr->is_compound()) { |
| 1449 | Location saved_location = location_; |
| 1450 | location_ = kAccumulator; |
| 1451 | EmitBinaryOp(expr->binary_op(), Expression::kValue); |
| 1452 | location_ = saved_location; |
| 1453 | } |
| 1454 | |
| 1455 | // Record source position before possible IC call. |
| 1456 | SetSourcePosition(expr->position()); |
| 1457 | |
| 1458 | // Store the value. |
| 1459 | switch (assign_type) { |
| 1460 | case VARIABLE: |
| 1461 | EmitVariableAssignment(expr->target()->AsVariableProxy()->var(), |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1462 | expr->op(), |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1463 | context_); |
| 1464 | break; |
| 1465 | case NAMED_PROPERTY: |
| 1466 | EmitNamedPropertyAssignment(expr); |
| 1467 | break; |
| 1468 | case KEYED_PROPERTY: |
| 1469 | EmitKeyedPropertyAssignment(expr); |
| 1470 | break; |
| 1471 | } |
| 1472 | } |
| 1473 | |
| 1474 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1475 | void FullCodeGenerator::EmitNamedPropertyLoad(Property* prop) { |
| 1476 | SetSourcePosition(prop->position()); |
| 1477 | Literal* key = prop->key()->AsLiteral(); |
| 1478 | __ mov(ecx, Immediate(key->handle())); |
| 1479 | Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize)); |
| 1480 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1481 | __ nop(); |
| 1482 | } |
| 1483 | |
| 1484 | |
| 1485 | void FullCodeGenerator::EmitKeyedPropertyLoad(Property* prop) { |
| 1486 | SetSourcePosition(prop->position()); |
| 1487 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); |
| 1488 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1489 | __ nop(); |
| 1490 | } |
| 1491 | |
| 1492 | |
| 1493 | void FullCodeGenerator::EmitBinaryOp(Token::Value op, |
| 1494 | Expression::Context context) { |
| 1495 | __ push(result_register()); |
| 1496 | GenericBinaryOpStub stub(op, |
| 1497 | NO_OVERWRITE, |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1498 | NO_GENERIC_BINARY_FLAGS, |
sgjesse@chromium.org | df7a284 | 2010-03-25 14:34:15 +0000 | [diff] [blame] | 1499 | TypeInfo::Unknown()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1500 | __ CallStub(&stub); |
| 1501 | Apply(context, eax); |
| 1502 | } |
| 1503 | |
| 1504 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1505 | void FullCodeGenerator::EmitAssignment(Expression* expr) { |
| 1506 | // Invalid left-hand sides are rewritten to have a 'throw |
| 1507 | // ReferenceError' on the left-hand side. |
| 1508 | if (!expr->IsValidLeftHandSide()) { |
| 1509 | VisitForEffect(expr); |
| 1510 | return; |
| 1511 | } |
| 1512 | |
| 1513 | // Left-hand side can only be a property, a global or a (parameter or local) |
| 1514 | // slot. Variables with rewrite to .arguments are treated as KEYED_PROPERTY. |
| 1515 | enum LhsKind { VARIABLE, NAMED_PROPERTY, KEYED_PROPERTY }; |
| 1516 | LhsKind assign_type = VARIABLE; |
| 1517 | Property* prop = expr->AsProperty(); |
| 1518 | if (prop != NULL) { |
| 1519 | assign_type = (prop->key()->IsPropertyName()) |
| 1520 | ? NAMED_PROPERTY |
| 1521 | : KEYED_PROPERTY; |
| 1522 | } |
| 1523 | |
| 1524 | switch (assign_type) { |
| 1525 | case VARIABLE: { |
| 1526 | Variable* var = expr->AsVariableProxy()->var(); |
| 1527 | EmitVariableAssignment(var, Token::ASSIGN, Expression::kEffect); |
| 1528 | break; |
| 1529 | } |
| 1530 | case NAMED_PROPERTY: { |
| 1531 | __ push(eax); // Preserve value. |
| 1532 | VisitForValue(prop->obj(), kAccumulator); |
| 1533 | __ mov(edx, eax); |
| 1534 | __ pop(eax); // Restore value. |
| 1535 | __ mov(ecx, prop->key()->AsLiteral()->handle()); |
| 1536 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 1537 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1538 | __ nop(); // Signal no inlined code. |
| 1539 | break; |
| 1540 | } |
| 1541 | case KEYED_PROPERTY: { |
| 1542 | __ push(eax); // Preserve value. |
| 1543 | VisitForValue(prop->obj(), kStack); |
| 1544 | VisitForValue(prop->key(), kAccumulator); |
| 1545 | __ mov(ecx, eax); |
| 1546 | __ pop(edx); |
| 1547 | __ pop(eax); // Restore value. |
| 1548 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize)); |
| 1549 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1550 | __ nop(); // Signal no inlined code. |
| 1551 | break; |
| 1552 | } |
| 1553 | } |
| 1554 | } |
| 1555 | |
| 1556 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1557 | void FullCodeGenerator::EmitVariableAssignment(Variable* var, |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1558 | Token::Value op, |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1559 | Expression::Context context) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1560 | // Left-hand sides that rewrite to explicit property accesses do not reach |
| 1561 | // here. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1562 | ASSERT(var != NULL); |
| 1563 | ASSERT(var->is_global() || var->slot() != NULL); |
| 1564 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1565 | if (var->is_global()) { |
| 1566 | ASSERT(!var->is_this()); |
| 1567 | // Assignment to a global variable. Use inline caching for the |
| 1568 | // assignment. Right-hand-side value is passed in eax, variable name in |
| 1569 | // ecx, and the global object on the stack. |
| 1570 | __ mov(ecx, var->name()); |
| 1571 | __ mov(edx, CodeGenerator::GlobalObject()); |
| 1572 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 1573 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1574 | __ nop(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1575 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1576 | } else if (var->mode() != Variable::CONST || op == Token::INIT_CONST) { |
| 1577 | // Perform the assignment for non-const variables and for initialization |
| 1578 | // of const variables. Const assignments are simply skipped. |
| 1579 | Label done; |
| 1580 | Slot* slot = var->slot(); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1581 | switch (slot->type()) { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1582 | case Slot::PARAMETER: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1583 | case Slot::LOCAL: |
| 1584 | if (op == Token::INIT_CONST) { |
| 1585 | // Detect const reinitialization by checking for the hole value. |
| 1586 | __ mov(edx, Operand(ebp, SlotOffset(slot))); |
| 1587 | __ cmp(edx, Factory::the_hole_value()); |
| 1588 | __ j(not_equal, &done); |
| 1589 | } |
| 1590 | // Perform the assignment. |
| 1591 | __ mov(Operand(ebp, SlotOffset(slot)), eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1592 | break; |
| 1593 | |
| 1594 | case Slot::CONTEXT: { |
| 1595 | MemOperand target = EmitSlotSearch(slot, ecx); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1596 | if (op == Token::INIT_CONST) { |
| 1597 | // Detect const reinitialization by checking for the hole value. |
| 1598 | __ mov(edx, target); |
| 1599 | __ cmp(edx, Factory::the_hole_value()); |
| 1600 | __ j(not_equal, &done); |
| 1601 | } |
| 1602 | // Perform the assignment and issue the write barrier. |
| 1603 | __ mov(target, eax); |
| 1604 | // The value of the assignment is in eax. RecordWrite clobbers its |
| 1605 | // register arguments. |
| 1606 | __ mov(edx, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1607 | int offset = FixedArray::kHeaderSize + slot->index() * kPointerSize; |
| 1608 | __ RecordWrite(ecx, offset, edx, ebx); |
| 1609 | break; |
| 1610 | } |
| 1611 | |
| 1612 | case Slot::LOOKUP: |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1613 | // Call the runtime for the assignment. The runtime will ignore |
| 1614 | // const reinitialization. |
| 1615 | __ push(eax); // Value. |
| 1616 | __ push(esi); // Context. |
| 1617 | __ push(Immediate(var->name())); |
| 1618 | if (op == Token::INIT_CONST) { |
| 1619 | // The runtime will ignore const redeclaration. |
| 1620 | __ CallRuntime(Runtime::kInitializeConstContextSlot, 3); |
| 1621 | } else { |
| 1622 | __ CallRuntime(Runtime::kStoreContextSlot, 3); |
| 1623 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1624 | break; |
| 1625 | } |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1626 | __ bind(&done); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1627 | } |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1628 | |
| 1629 | Apply(context, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1630 | } |
| 1631 | |
| 1632 | |
| 1633 | void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
| 1634 | // Assignment to a property, using a named store IC. |
| 1635 | Property* prop = expr->target()->AsProperty(); |
| 1636 | ASSERT(prop != NULL); |
| 1637 | ASSERT(prop->key()->AsLiteral() != NULL); |
| 1638 | |
| 1639 | // If the assignment starts a block of assignments to the same object, |
| 1640 | // change to slow case to avoid the quadratic behavior of repeatedly |
| 1641 | // adding fast properties. |
| 1642 | if (expr->starts_initialization_block()) { |
| 1643 | __ push(result_register()); |
| 1644 | __ push(Operand(esp, kPointerSize)); // Receiver is now under value. |
| 1645 | __ CallRuntime(Runtime::kToSlowProperties, 1); |
| 1646 | __ pop(result_register()); |
| 1647 | } |
| 1648 | |
| 1649 | // Record source code position before IC call. |
| 1650 | SetSourcePosition(expr->position()); |
| 1651 | __ mov(ecx, prop->key()->AsLiteral()->handle()); |
| 1652 | if (expr->ends_initialization_block()) { |
| 1653 | __ mov(edx, Operand(esp, 0)); |
| 1654 | } else { |
| 1655 | __ pop(edx); |
| 1656 | } |
| 1657 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 1658 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1659 | __ nop(); |
| 1660 | |
| 1661 | // If the assignment ends an initialization block, revert to fast case. |
| 1662 | if (expr->ends_initialization_block()) { |
| 1663 | __ push(eax); // Result of assignment, saved even if not needed. |
| 1664 | __ push(Operand(esp, kPointerSize)); // Receiver is under value. |
| 1665 | __ CallRuntime(Runtime::kToFastProperties, 1); |
| 1666 | __ pop(eax); |
| 1667 | DropAndApply(1, context_, eax); |
| 1668 | } else { |
| 1669 | Apply(context_, eax); |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | |
| 1674 | void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
| 1675 | // Assignment to a property, using a keyed store IC. |
| 1676 | |
| 1677 | // If the assignment starts a block of assignments to the same object, |
| 1678 | // change to slow case to avoid the quadratic behavior of repeatedly |
| 1679 | // adding fast properties. |
| 1680 | if (expr->starts_initialization_block()) { |
| 1681 | __ push(result_register()); |
| 1682 | // Receiver is now under the key and value. |
| 1683 | __ push(Operand(esp, 2 * kPointerSize)); |
| 1684 | __ CallRuntime(Runtime::kToSlowProperties, 1); |
| 1685 | __ pop(result_register()); |
| 1686 | } |
| 1687 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1688 | __ pop(ecx); |
| 1689 | if (expr->ends_initialization_block()) { |
| 1690 | __ mov(edx, Operand(esp, 0)); // Leave receiver on the stack for later. |
| 1691 | } else { |
| 1692 | __ pop(edx); |
| 1693 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1694 | // Record source code position before IC call. |
| 1695 | SetSourcePosition(expr->position()); |
| 1696 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize)); |
| 1697 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1698 | // This nop signals to the IC that there is no inlined code at the call |
| 1699 | // site for it to patch. |
| 1700 | __ nop(); |
| 1701 | |
| 1702 | // If the assignment ends an initialization block, revert to fast case. |
| 1703 | if (expr->ends_initialization_block()) { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1704 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1705 | __ push(eax); // Result of assignment, saved even if not needed. |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1706 | __ push(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1707 | __ CallRuntime(Runtime::kToFastProperties, 1); |
| 1708 | __ pop(eax); |
| 1709 | } |
| 1710 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1711 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1712 | } |
| 1713 | |
| 1714 | |
| 1715 | void FullCodeGenerator::VisitProperty(Property* expr) { |
| 1716 | Comment cmnt(masm_, "[ Property"); |
| 1717 | Expression* key = expr->key(); |
| 1718 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1719 | if (key->IsPropertyName()) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1720 | VisitForValue(expr->obj(), kAccumulator); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1721 | EmitNamedPropertyLoad(expr); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1722 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1723 | } else { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1724 | VisitForValue(expr->obj(), kStack); |
| 1725 | VisitForValue(expr->key(), kAccumulator); |
| 1726 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1727 | EmitKeyedPropertyLoad(expr); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1728 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1729 | } |
| 1730 | } |
| 1731 | |
| 1732 | |
| 1733 | void FullCodeGenerator::EmitCallWithIC(Call* expr, |
| 1734 | Handle<Object> name, |
| 1735 | RelocInfo::Mode mode) { |
| 1736 | // Code common for calls using the IC. |
| 1737 | ZoneList<Expression*>* args = expr->arguments(); |
| 1738 | int arg_count = args->length(); |
| 1739 | for (int i = 0; i < arg_count; i++) { |
| 1740 | VisitForValue(args->at(i), kStack); |
| 1741 | } |
| 1742 | __ Set(ecx, Immediate(name)); |
| 1743 | // Record source position of the IC call. |
| 1744 | SetSourcePosition(expr->position()); |
| 1745 | InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 1746 | Handle<Code> ic = CodeGenerator::ComputeCallInitialize(arg_count, in_loop); |
| 1747 | __ call(ic, mode); |
| 1748 | // Restore context register. |
| 1749 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 1750 | Apply(context_, eax); |
| 1751 | } |
| 1752 | |
| 1753 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1754 | void FullCodeGenerator::EmitKeyedCallWithIC(Call* expr, |
| 1755 | Expression* key, |
| 1756 | RelocInfo::Mode mode) { |
| 1757 | // Code common for calls using the IC. |
| 1758 | ZoneList<Expression*>* args = expr->arguments(); |
| 1759 | int arg_count = args->length(); |
| 1760 | for (int i = 0; i < arg_count; i++) { |
| 1761 | VisitForValue(args->at(i), kStack); |
| 1762 | } |
| 1763 | VisitForValue(key, kAccumulator); |
| 1764 | __ mov(ecx, eax); |
| 1765 | // Record source position of the IC call. |
| 1766 | SetSourcePosition(expr->position()); |
| 1767 | InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 1768 | Handle<Code> ic = CodeGenerator::ComputeKeyedCallInitialize( |
| 1769 | arg_count, in_loop); |
| 1770 | __ call(ic, mode); |
| 1771 | // Restore context register. |
| 1772 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 1773 | Apply(context_, eax); |
| 1774 | } |
| 1775 | |
| 1776 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1777 | void FullCodeGenerator::EmitCallWithStub(Call* expr) { |
| 1778 | // Code common for calls using the call stub. |
| 1779 | ZoneList<Expression*>* args = expr->arguments(); |
| 1780 | int arg_count = args->length(); |
| 1781 | for (int i = 0; i < arg_count; i++) { |
| 1782 | VisitForValue(args->at(i), kStack); |
| 1783 | } |
| 1784 | // Record source position for debugger. |
| 1785 | SetSourcePosition(expr->position()); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1786 | InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 1787 | CallFunctionStub stub(arg_count, in_loop, RECEIVER_MIGHT_BE_VALUE); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1788 | __ CallStub(&stub); |
| 1789 | // Restore context register. |
| 1790 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 1791 | DropAndApply(1, context_, eax); |
| 1792 | } |
| 1793 | |
| 1794 | |
| 1795 | void FullCodeGenerator::VisitCall(Call* expr) { |
| 1796 | Comment cmnt(masm_, "[ Call"); |
| 1797 | Expression* fun = expr->expression(); |
| 1798 | Variable* var = fun->AsVariableProxy()->AsVariable(); |
| 1799 | |
| 1800 | if (var != NULL && var->is_possibly_eval()) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1801 | // In a call to eval, we first call %ResolvePossiblyDirectEval to |
| 1802 | // resolve the function we need to call and the receiver of the |
| 1803 | // call. Then we call the resolved function using the given |
| 1804 | // arguments. |
| 1805 | VisitForValue(fun, kStack); |
| 1806 | __ push(Immediate(Factory::undefined_value())); // Reserved receiver slot. |
| 1807 | |
| 1808 | // Push the arguments. |
| 1809 | ZoneList<Expression*>* args = expr->arguments(); |
| 1810 | int arg_count = args->length(); |
| 1811 | for (int i = 0; i < arg_count; i++) { |
| 1812 | VisitForValue(args->at(i), kStack); |
| 1813 | } |
| 1814 | |
| 1815 | // Push copy of the function - found below the arguments. |
| 1816 | __ push(Operand(esp, (arg_count + 1) * kPointerSize)); |
| 1817 | |
| 1818 | // Push copy of the first argument or undefined if it doesn't exist. |
| 1819 | if (arg_count > 0) { |
| 1820 | __ push(Operand(esp, arg_count * kPointerSize)); |
| 1821 | } else { |
| 1822 | __ push(Immediate(Factory::undefined_value())); |
| 1823 | } |
| 1824 | |
| 1825 | // Push the receiver of the enclosing function and do runtime call. |
| 1826 | __ push(Operand(ebp, (2 + scope()->num_parameters()) * kPointerSize)); |
| 1827 | __ CallRuntime(Runtime::kResolvePossiblyDirectEval, 3); |
| 1828 | |
| 1829 | // The runtime call returns a pair of values in eax (function) and |
| 1830 | // edx (receiver). Touch up the stack with the right values. |
| 1831 | __ mov(Operand(esp, (arg_count + 0) * kPointerSize), edx); |
| 1832 | __ mov(Operand(esp, (arg_count + 1) * kPointerSize), eax); |
| 1833 | |
| 1834 | // Record source position for debugger. |
| 1835 | SetSourcePosition(expr->position()); |
| 1836 | InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 1837 | CallFunctionStub stub(arg_count, in_loop, RECEIVER_MIGHT_BE_VALUE); |
| 1838 | __ CallStub(&stub); |
| 1839 | // Restore context register. |
| 1840 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 1841 | DropAndApply(1, context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1842 | } else if (var != NULL && !var->is_this() && var->is_global()) { |
| 1843 | // Push global object as receiver for the call IC. |
| 1844 | __ push(CodeGenerator::GlobalObject()); |
| 1845 | EmitCallWithIC(expr, var->name(), RelocInfo::CODE_TARGET_CONTEXT); |
| 1846 | } else if (var != NULL && var->slot() != NULL && |
| 1847 | var->slot()->type() == Slot::LOOKUP) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1848 | // Call to a lookup slot (dynamically introduced variable). Call the |
| 1849 | // runtime to find the function to call (returned in eax) and the object |
| 1850 | // holding it (returned in edx). |
| 1851 | __ push(context_register()); |
| 1852 | __ push(Immediate(var->name())); |
| 1853 | __ CallRuntime(Runtime::kLoadContextSlot, 2); |
| 1854 | __ push(eax); // Function. |
| 1855 | __ push(edx); // Receiver. |
| 1856 | EmitCallWithStub(expr); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1857 | } else if (fun->AsProperty() != NULL) { |
| 1858 | // Call to an object property. |
| 1859 | Property* prop = fun->AsProperty(); |
| 1860 | Literal* key = prop->key()->AsLiteral(); |
| 1861 | if (key != NULL && key->handle()->IsSymbol()) { |
| 1862 | // Call to a named property, use call IC. |
| 1863 | VisitForValue(prop->obj(), kStack); |
| 1864 | EmitCallWithIC(expr, key->handle(), RelocInfo::CODE_TARGET); |
| 1865 | } else { |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1866 | // Call to a keyed property. |
| 1867 | // For a synthetic property use keyed load IC followed by function call, |
| 1868 | // for a regular property use keyed CallIC. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1869 | VisitForValue(prop->obj(), kStack); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1870 | if (prop->is_synthetic()) { |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1871 | VisitForValue(prop->key(), kAccumulator); |
| 1872 | // Record source code position for IC call. |
| 1873 | SetSourcePosition(prop->position()); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1874 | __ pop(edx); // We do not need to keep the receiver. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1875 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1876 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize)); |
| 1877 | __ call(ic, RelocInfo::CODE_TARGET); |
| 1878 | // By emitting a nop we make sure that we do not have a "test eax,..." |
| 1879 | // instruction after the call as it is treated specially |
| 1880 | // by the LoadIC code. |
| 1881 | __ nop(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1882 | // Push result (function). |
| 1883 | __ push(eax); |
| 1884 | // Push Global receiver. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1885 | __ mov(ecx, CodeGenerator::GlobalObject()); |
| 1886 | __ push(FieldOperand(ecx, GlobalObject::kGlobalReceiverOffset)); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1887 | EmitCallWithStub(expr); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1888 | } else { |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1889 | EmitKeyedCallWithIC(expr, prop->key(), RelocInfo::CODE_TARGET); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1890 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 1891 | } |
| 1892 | } else { |
| 1893 | // Call to some other expression. If the expression is an anonymous |
| 1894 | // function literal not called in a loop, mark it as one that should |
| 1895 | // also use the full code generator. |
| 1896 | FunctionLiteral* lit = fun->AsFunctionLiteral(); |
| 1897 | if (lit != NULL && |
| 1898 | lit->name()->Equals(Heap::empty_string()) && |
| 1899 | loop_depth() == 0) { |
| 1900 | lit->set_try_full_codegen(true); |
| 1901 | } |
| 1902 | VisitForValue(fun, kStack); |
| 1903 | // Load global receiver object. |
| 1904 | __ mov(ebx, CodeGenerator::GlobalObject()); |
| 1905 | __ push(FieldOperand(ebx, GlobalObject::kGlobalReceiverOffset)); |
| 1906 | // Emit function call. |
| 1907 | EmitCallWithStub(expr); |
| 1908 | } |
| 1909 | } |
| 1910 | |
| 1911 | |
| 1912 | void FullCodeGenerator::VisitCallNew(CallNew* expr) { |
| 1913 | Comment cmnt(masm_, "[ CallNew"); |
| 1914 | // According to ECMA-262, section 11.2.2, page 44, the function |
| 1915 | // expression in new calls must be evaluated before the |
| 1916 | // arguments. |
| 1917 | // Push function on the stack. |
| 1918 | VisitForValue(expr->expression(), kStack); |
| 1919 | |
| 1920 | // Push global object (receiver). |
| 1921 | __ push(CodeGenerator::GlobalObject()); |
| 1922 | |
| 1923 | // Push the arguments ("left-to-right") on the stack. |
| 1924 | ZoneList<Expression*>* args = expr->arguments(); |
| 1925 | int arg_count = args->length(); |
| 1926 | for (int i = 0; i < arg_count; i++) { |
| 1927 | VisitForValue(args->at(i), kStack); |
| 1928 | } |
| 1929 | |
| 1930 | // Call the construct call builtin that handles allocation and |
| 1931 | // constructor invocation. |
| 1932 | SetSourcePosition(expr->position()); |
| 1933 | |
| 1934 | // Load function, arg_count into edi and eax. |
| 1935 | __ Set(eax, Immediate(arg_count)); |
| 1936 | // Function is in esp[arg_count + 1]. |
| 1937 | __ mov(edi, Operand(esp, eax, times_pointer_size, kPointerSize)); |
| 1938 | |
| 1939 | Handle<Code> construct_builtin(Builtins::builtin(Builtins::JSConstructCall)); |
| 1940 | __ call(construct_builtin, RelocInfo::CONSTRUCT_CALL); |
| 1941 | |
| 1942 | // Replace function on TOS with result in eax, or pop it. |
| 1943 | DropAndApply(1, context_, eax); |
| 1944 | } |
| 1945 | |
| 1946 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 1947 | void FullCodeGenerator::EmitIsSmi(ZoneList<Expression*>* args) { |
| 1948 | ASSERT(args->length() == 1); |
| 1949 | |
| 1950 | VisitForValue(args->at(0), kAccumulator); |
| 1951 | |
| 1952 | Label materialize_true, materialize_false; |
| 1953 | Label* if_true = NULL; |
| 1954 | Label* if_false = NULL; |
| 1955 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 1956 | |
| 1957 | __ test(eax, Immediate(kSmiTagMask)); |
| 1958 | __ j(zero, if_true); |
| 1959 | __ jmp(if_false); |
| 1960 | |
| 1961 | Apply(context_, if_true, if_false); |
| 1962 | } |
| 1963 | |
| 1964 | |
| 1965 | void FullCodeGenerator::EmitIsNonNegativeSmi(ZoneList<Expression*>* args) { |
| 1966 | ASSERT(args->length() == 1); |
| 1967 | |
| 1968 | VisitForValue(args->at(0), kAccumulator); |
| 1969 | |
| 1970 | Label materialize_true, materialize_false; |
| 1971 | Label* if_true = NULL; |
| 1972 | Label* if_false = NULL; |
| 1973 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 1974 | |
| 1975 | __ test(eax, Immediate(kSmiTagMask | 0x80000000)); |
| 1976 | __ j(zero, if_true); |
| 1977 | __ jmp(if_false); |
| 1978 | |
| 1979 | Apply(context_, if_true, if_false); |
| 1980 | } |
| 1981 | |
| 1982 | |
| 1983 | void FullCodeGenerator::EmitIsObject(ZoneList<Expression*>* args) { |
| 1984 | ASSERT(args->length() == 1); |
| 1985 | |
| 1986 | VisitForValue(args->at(0), kAccumulator); |
| 1987 | |
| 1988 | Label materialize_true, materialize_false; |
| 1989 | Label* if_true = NULL; |
| 1990 | Label* if_false = NULL; |
| 1991 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 1992 | |
| 1993 | __ test(eax, Immediate(kSmiTagMask)); |
| 1994 | __ j(zero, if_false); |
| 1995 | __ cmp(eax, Factory::null_value()); |
| 1996 | __ j(equal, if_true); |
| 1997 | __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 1998 | // Undetectable objects behave like undefined when tested with typeof. |
| 1999 | __ movzx_b(ecx, FieldOperand(ebx, Map::kBitFieldOffset)); |
| 2000 | __ test(ecx, Immediate(1 << Map::kIsUndetectable)); |
| 2001 | __ j(not_zero, if_false); |
| 2002 | __ movzx_b(ecx, FieldOperand(ebx, Map::kInstanceTypeOffset)); |
| 2003 | __ cmp(ecx, FIRST_JS_OBJECT_TYPE); |
| 2004 | __ j(below, if_false); |
| 2005 | __ cmp(ecx, LAST_JS_OBJECT_TYPE); |
| 2006 | __ j(below_equal, if_true); |
| 2007 | __ jmp(if_false); |
| 2008 | |
| 2009 | Apply(context_, if_true, if_false); |
| 2010 | } |
| 2011 | |
| 2012 | |
ricow@chromium.org | 4980dff | 2010-07-19 08:33:45 +0000 | [diff] [blame] | 2013 | void FullCodeGenerator::EmitIsSpecObject(ZoneList<Expression*>* args) { |
| 2014 | ASSERT(args->length() == 1); |
| 2015 | |
| 2016 | VisitForValue(args->at(0), kAccumulator); |
| 2017 | |
| 2018 | Label materialize_true, materialize_false; |
| 2019 | Label* if_true = NULL; |
| 2020 | Label* if_false = NULL; |
| 2021 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2022 | |
| 2023 | __ test(eax, Immediate(kSmiTagMask)); |
| 2024 | __ j(equal, if_false); |
| 2025 | __ CmpObjectType(eax, FIRST_JS_OBJECT_TYPE, ebx); |
| 2026 | __ j(above_equal, if_true); |
| 2027 | __ jmp(if_false); |
| 2028 | |
| 2029 | Apply(context_, if_true, if_false); |
| 2030 | } |
| 2031 | |
| 2032 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2033 | void FullCodeGenerator::EmitIsUndetectableObject(ZoneList<Expression*>* args) { |
| 2034 | ASSERT(args->length() == 1); |
| 2035 | |
| 2036 | VisitForValue(args->at(0), kAccumulator); |
| 2037 | |
| 2038 | Label materialize_true, materialize_false; |
| 2039 | Label* if_true = NULL; |
| 2040 | Label* if_false = NULL; |
| 2041 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2042 | |
| 2043 | __ test(eax, Immediate(kSmiTagMask)); |
| 2044 | __ j(zero, if_false); |
| 2045 | __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset)); |
| 2046 | __ movzx_b(ebx, FieldOperand(ebx, Map::kBitFieldOffset)); |
| 2047 | __ test(ebx, Immediate(1 << Map::kIsUndetectable)); |
| 2048 | __ j(not_zero, if_true); |
| 2049 | __ jmp(if_false); |
| 2050 | |
| 2051 | Apply(context_, if_true, if_false); |
| 2052 | } |
| 2053 | |
| 2054 | |
ager@chromium.org | ea4f62e | 2010-08-16 16:28:43 +0000 | [diff] [blame^] | 2055 | void FullCodeGenerator::EmitIsStringWrapperSafeForDefaultValueOf( |
| 2056 | ZoneList<Expression*>* args) { |
| 2057 | ASSERT(args->length() == 1); |
| 2058 | |
| 2059 | VisitForValue(args->at(0), kAccumulator); |
| 2060 | |
| 2061 | Label materialize_true, materialize_false; |
| 2062 | Label* if_true = NULL; |
| 2063 | Label* if_false = NULL; |
| 2064 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2065 | |
| 2066 | // Just indicate false, as %_IsStringWrapperSafeForDefaultValueOf() is only |
| 2067 | // used in a few functions in runtime.js which should not normally be hit by |
| 2068 | // this compiler. |
| 2069 | __ jmp(if_false); |
| 2070 | Apply(context_, if_true, if_false); |
| 2071 | } |
| 2072 | |
| 2073 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2074 | void FullCodeGenerator::EmitIsFunction(ZoneList<Expression*>* args) { |
| 2075 | ASSERT(args->length() == 1); |
| 2076 | |
| 2077 | VisitForValue(args->at(0), kAccumulator); |
| 2078 | |
| 2079 | Label materialize_true, materialize_false; |
| 2080 | Label* if_true = NULL; |
| 2081 | Label* if_false = NULL; |
| 2082 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2083 | |
| 2084 | __ test(eax, Immediate(kSmiTagMask)); |
| 2085 | __ j(zero, if_false); |
| 2086 | __ CmpObjectType(eax, JS_FUNCTION_TYPE, ebx); |
| 2087 | __ j(equal, if_true); |
| 2088 | __ jmp(if_false); |
| 2089 | |
| 2090 | Apply(context_, if_true, if_false); |
| 2091 | } |
| 2092 | |
| 2093 | |
| 2094 | void FullCodeGenerator::EmitIsArray(ZoneList<Expression*>* args) { |
| 2095 | ASSERT(args->length() == 1); |
| 2096 | |
| 2097 | VisitForValue(args->at(0), kAccumulator); |
| 2098 | |
| 2099 | Label materialize_true, materialize_false; |
| 2100 | Label* if_true = NULL; |
| 2101 | Label* if_false = NULL; |
| 2102 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2103 | |
| 2104 | __ test(eax, Immediate(kSmiTagMask)); |
| 2105 | __ j(equal, if_false); |
| 2106 | __ CmpObjectType(eax, JS_ARRAY_TYPE, ebx); |
| 2107 | __ j(equal, if_true); |
| 2108 | __ jmp(if_false); |
| 2109 | |
| 2110 | Apply(context_, if_true, if_false); |
| 2111 | } |
| 2112 | |
| 2113 | |
| 2114 | void FullCodeGenerator::EmitIsRegExp(ZoneList<Expression*>* args) { |
| 2115 | ASSERT(args->length() == 1); |
| 2116 | |
| 2117 | VisitForValue(args->at(0), kAccumulator); |
| 2118 | |
| 2119 | Label materialize_true, materialize_false; |
| 2120 | Label* if_true = NULL; |
| 2121 | Label* if_false = NULL; |
| 2122 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2123 | |
| 2124 | __ test(eax, Immediate(kSmiTagMask)); |
| 2125 | __ j(equal, if_false); |
| 2126 | __ CmpObjectType(eax, JS_REGEXP_TYPE, ebx); |
| 2127 | __ j(equal, if_true); |
| 2128 | __ jmp(if_false); |
| 2129 | |
| 2130 | Apply(context_, if_true, if_false); |
| 2131 | } |
| 2132 | |
| 2133 | |
| 2134 | |
| 2135 | void FullCodeGenerator::EmitIsConstructCall(ZoneList<Expression*>* args) { |
| 2136 | ASSERT(args->length() == 0); |
| 2137 | |
| 2138 | Label materialize_true, materialize_false; |
| 2139 | Label* if_true = NULL; |
| 2140 | Label* if_false = NULL; |
| 2141 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2142 | |
| 2143 | // Get the frame pointer for the calling frame. |
| 2144 | __ mov(eax, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2145 | |
| 2146 | // Skip the arguments adaptor frame if it exists. |
| 2147 | Label check_frame_marker; |
| 2148 | __ cmp(Operand(eax, StandardFrameConstants::kContextOffset), |
| 2149 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2150 | __ j(not_equal, &check_frame_marker); |
| 2151 | __ mov(eax, Operand(eax, StandardFrameConstants::kCallerFPOffset)); |
| 2152 | |
| 2153 | // Check the marker in the calling frame. |
| 2154 | __ bind(&check_frame_marker); |
| 2155 | __ cmp(Operand(eax, StandardFrameConstants::kMarkerOffset), |
| 2156 | Immediate(Smi::FromInt(StackFrame::CONSTRUCT))); |
| 2157 | __ j(equal, if_true); |
| 2158 | __ jmp(if_false); |
| 2159 | |
| 2160 | Apply(context_, if_true, if_false); |
| 2161 | } |
| 2162 | |
| 2163 | |
| 2164 | void FullCodeGenerator::EmitObjectEquals(ZoneList<Expression*>* args) { |
| 2165 | ASSERT(args->length() == 2); |
| 2166 | |
| 2167 | // Load the two objects into registers and perform the comparison. |
| 2168 | VisitForValue(args->at(0), kStack); |
| 2169 | VisitForValue(args->at(1), kAccumulator); |
| 2170 | |
| 2171 | Label materialize_true, materialize_false; |
| 2172 | Label* if_true = NULL; |
| 2173 | Label* if_false = NULL; |
| 2174 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
| 2175 | |
| 2176 | __ pop(ebx); |
| 2177 | __ cmp(eax, Operand(ebx)); |
| 2178 | __ j(equal, if_true); |
| 2179 | __ jmp(if_false); |
| 2180 | |
| 2181 | Apply(context_, if_true, if_false); |
| 2182 | } |
| 2183 | |
| 2184 | |
| 2185 | void FullCodeGenerator::EmitArguments(ZoneList<Expression*>* args) { |
| 2186 | ASSERT(args->length() == 1); |
| 2187 | |
| 2188 | // ArgumentsAccessStub expects the key in edx and the formal |
| 2189 | // parameter count in eax. |
| 2190 | VisitForValue(args->at(0), kAccumulator); |
| 2191 | __ mov(edx, eax); |
| 2192 | __ mov(eax, Immediate(Smi::FromInt(scope()->num_parameters()))); |
| 2193 | ArgumentsAccessStub stub(ArgumentsAccessStub::READ_ELEMENT); |
| 2194 | __ CallStub(&stub); |
| 2195 | Apply(context_, eax); |
| 2196 | } |
| 2197 | |
| 2198 | |
| 2199 | void FullCodeGenerator::EmitArgumentsLength(ZoneList<Expression*>* args) { |
| 2200 | ASSERT(args->length() == 0); |
| 2201 | |
| 2202 | Label exit; |
| 2203 | // Get the number of formal parameters. |
| 2204 | __ Set(eax, Immediate(Smi::FromInt(scope()->num_parameters()))); |
| 2205 | |
| 2206 | // Check if the calling frame is an arguments adaptor frame. |
| 2207 | __ mov(ebx, Operand(ebp, StandardFrameConstants::kCallerFPOffset)); |
| 2208 | __ cmp(Operand(ebx, StandardFrameConstants::kContextOffset), |
| 2209 | Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 2210 | __ j(not_equal, &exit); |
| 2211 | |
| 2212 | // Arguments adaptor case: Read the arguments length from the |
| 2213 | // adaptor frame. |
| 2214 | __ mov(eax, Operand(ebx, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 2215 | |
| 2216 | __ bind(&exit); |
| 2217 | if (FLAG_debug_code) __ AbortIfNotSmi(eax); |
| 2218 | Apply(context_, eax); |
| 2219 | } |
| 2220 | |
| 2221 | |
| 2222 | void FullCodeGenerator::EmitClassOf(ZoneList<Expression*>* args) { |
| 2223 | ASSERT(args->length() == 1); |
| 2224 | Label done, null, function, non_function_constructor; |
| 2225 | |
| 2226 | VisitForValue(args->at(0), kAccumulator); |
| 2227 | |
| 2228 | // If the object is a smi, we return null. |
| 2229 | __ test(eax, Immediate(kSmiTagMask)); |
| 2230 | __ j(zero, &null); |
| 2231 | |
| 2232 | // Check that the object is a JS object but take special care of JS |
| 2233 | // functions to make sure they have 'Function' as their class. |
kmillikin@chromium.org | 9155e25 | 2010-05-26 13:27:57 +0000 | [diff] [blame] | 2234 | __ CmpObjectType(eax, FIRST_JS_OBJECT_TYPE, eax); // Map is now in eax. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2235 | __ j(below, &null); |
| 2236 | |
| 2237 | // As long as JS_FUNCTION_TYPE is the last instance type and it is |
| 2238 | // right after LAST_JS_OBJECT_TYPE, we can avoid checking for |
| 2239 | // LAST_JS_OBJECT_TYPE. |
| 2240 | ASSERT(LAST_TYPE == JS_FUNCTION_TYPE); |
| 2241 | ASSERT(JS_FUNCTION_TYPE == LAST_JS_OBJECT_TYPE + 1); |
fschneider@chromium.org | 40b9da3 | 2010-06-28 11:29:21 +0000 | [diff] [blame] | 2242 | __ CmpInstanceType(eax, JS_FUNCTION_TYPE); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2243 | __ j(equal, &function); |
| 2244 | |
| 2245 | // Check if the constructor in the map is a function. |
| 2246 | __ mov(eax, FieldOperand(eax, Map::kConstructorOffset)); |
| 2247 | __ CmpObjectType(eax, JS_FUNCTION_TYPE, ebx); |
| 2248 | __ j(not_equal, &non_function_constructor); |
| 2249 | |
| 2250 | // eax now contains the constructor function. Grab the |
| 2251 | // instance class name from there. |
| 2252 | __ mov(eax, FieldOperand(eax, JSFunction::kSharedFunctionInfoOffset)); |
| 2253 | __ mov(eax, FieldOperand(eax, SharedFunctionInfo::kInstanceClassNameOffset)); |
| 2254 | __ jmp(&done); |
| 2255 | |
| 2256 | // Functions have class 'Function'. |
| 2257 | __ bind(&function); |
| 2258 | __ mov(eax, Factory::function_class_symbol()); |
| 2259 | __ jmp(&done); |
| 2260 | |
| 2261 | // Objects with a non-function constructor have class 'Object'. |
| 2262 | __ bind(&non_function_constructor); |
| 2263 | __ mov(eax, Factory::Object_symbol()); |
| 2264 | __ jmp(&done); |
| 2265 | |
| 2266 | // Non-JS objects have class null. |
| 2267 | __ bind(&null); |
| 2268 | __ mov(eax, Factory::null_value()); |
| 2269 | |
| 2270 | // All done. |
| 2271 | __ bind(&done); |
| 2272 | |
| 2273 | Apply(context_, eax); |
| 2274 | } |
| 2275 | |
| 2276 | |
| 2277 | void FullCodeGenerator::EmitLog(ZoneList<Expression*>* args) { |
| 2278 | // Conditionally generate a log call. |
| 2279 | // Args: |
| 2280 | // 0 (literal string): The type of logging (corresponds to the flags). |
| 2281 | // This is used to determine whether or not to generate the log call. |
| 2282 | // 1 (string): Format string. Access the string at argument index 2 |
| 2283 | // with '%2s' (see Logger::LogRuntime for all the formats). |
| 2284 | // 2 (array): Arguments to the format string. |
| 2285 | ASSERT_EQ(args->length(), 3); |
| 2286 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 2287 | if (CodeGenerator::ShouldGenerateLog(args->at(0))) { |
| 2288 | VisitForValue(args->at(1), kStack); |
| 2289 | VisitForValue(args->at(2), kStack); |
| 2290 | __ CallRuntime(Runtime::kLog, 2); |
| 2291 | } |
| 2292 | #endif |
| 2293 | // Finally, we're expected to leave a value on the top of the stack. |
| 2294 | __ mov(eax, Factory::undefined_value()); |
| 2295 | Apply(context_, eax); |
| 2296 | } |
| 2297 | |
| 2298 | |
| 2299 | void FullCodeGenerator::EmitRandomHeapNumber(ZoneList<Expression*>* args) { |
| 2300 | ASSERT(args->length() == 0); |
| 2301 | |
| 2302 | Label slow_allocate_heapnumber; |
| 2303 | Label heapnumber_allocated; |
| 2304 | |
| 2305 | __ AllocateHeapNumber(edi, ebx, ecx, &slow_allocate_heapnumber); |
| 2306 | __ jmp(&heapnumber_allocated); |
| 2307 | |
| 2308 | __ bind(&slow_allocate_heapnumber); |
ager@chromium.org | 6a2b0aa | 2010-07-13 20:58:03 +0000 | [diff] [blame] | 2309 | // Allocate a heap number. |
| 2310 | __ CallRuntime(Runtime::kNumberAlloc, 0); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2311 | __ mov(edi, eax); |
| 2312 | |
| 2313 | __ bind(&heapnumber_allocated); |
| 2314 | |
| 2315 | __ PrepareCallCFunction(0, ebx); |
| 2316 | __ CallCFunction(ExternalReference::random_uint32_function(), 0); |
| 2317 | |
| 2318 | // Convert 32 random bits in eax to 0.(32 random bits) in a double |
| 2319 | // by computing: |
| 2320 | // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
| 2321 | // This is implemented on both SSE2 and FPU. |
| 2322 | if (CpuFeatures::IsSupported(SSE2)) { |
| 2323 | CpuFeatures::Scope fscope(SSE2); |
| 2324 | __ mov(ebx, Immediate(0x49800000)); // 1.0 x 2^20 as single. |
| 2325 | __ movd(xmm1, Operand(ebx)); |
| 2326 | __ movd(xmm0, Operand(eax)); |
| 2327 | __ cvtss2sd(xmm1, xmm1); |
| 2328 | __ pxor(xmm0, xmm1); |
| 2329 | __ subsd(xmm0, xmm1); |
| 2330 | __ movdbl(FieldOperand(edi, HeapNumber::kValueOffset), xmm0); |
| 2331 | } else { |
| 2332 | // 0x4130000000000000 is 1.0 x 2^20 as a double. |
| 2333 | __ mov(FieldOperand(edi, HeapNumber::kExponentOffset), |
| 2334 | Immediate(0x41300000)); |
| 2335 | __ mov(FieldOperand(edi, HeapNumber::kMantissaOffset), eax); |
| 2336 | __ fld_d(FieldOperand(edi, HeapNumber::kValueOffset)); |
| 2337 | __ mov(FieldOperand(edi, HeapNumber::kMantissaOffset), Immediate(0)); |
| 2338 | __ fld_d(FieldOperand(edi, HeapNumber::kValueOffset)); |
| 2339 | __ fsubp(1); |
| 2340 | __ fstp_d(FieldOperand(edi, HeapNumber::kValueOffset)); |
| 2341 | } |
| 2342 | __ mov(eax, edi); |
| 2343 | Apply(context_, eax); |
| 2344 | } |
| 2345 | |
| 2346 | |
| 2347 | void FullCodeGenerator::EmitSubString(ZoneList<Expression*>* args) { |
| 2348 | // Load the arguments on the stack and call the stub. |
| 2349 | SubStringStub stub; |
| 2350 | ASSERT(args->length() == 3); |
| 2351 | VisitForValue(args->at(0), kStack); |
| 2352 | VisitForValue(args->at(1), kStack); |
| 2353 | VisitForValue(args->at(2), kStack); |
| 2354 | __ CallStub(&stub); |
| 2355 | Apply(context_, eax); |
| 2356 | } |
| 2357 | |
| 2358 | |
| 2359 | void FullCodeGenerator::EmitRegExpExec(ZoneList<Expression*>* args) { |
| 2360 | // Load the arguments on the stack and call the stub. |
| 2361 | RegExpExecStub stub; |
| 2362 | ASSERT(args->length() == 4); |
| 2363 | VisitForValue(args->at(0), kStack); |
| 2364 | VisitForValue(args->at(1), kStack); |
| 2365 | VisitForValue(args->at(2), kStack); |
| 2366 | VisitForValue(args->at(3), kStack); |
| 2367 | __ CallStub(&stub); |
| 2368 | Apply(context_, eax); |
| 2369 | } |
| 2370 | |
| 2371 | |
| 2372 | void FullCodeGenerator::EmitValueOf(ZoneList<Expression*>* args) { |
| 2373 | ASSERT(args->length() == 1); |
| 2374 | |
| 2375 | VisitForValue(args->at(0), kAccumulator); // Load the object. |
| 2376 | |
| 2377 | Label done; |
| 2378 | // If the object is a smi return the object. |
| 2379 | __ test(eax, Immediate(kSmiTagMask)); |
| 2380 | __ j(zero, &done); |
| 2381 | // If the object is not a value type, return the object. |
| 2382 | __ CmpObjectType(eax, JS_VALUE_TYPE, ebx); |
| 2383 | __ j(not_equal, &done); |
| 2384 | __ mov(eax, FieldOperand(eax, JSValue::kValueOffset)); |
| 2385 | |
| 2386 | __ bind(&done); |
| 2387 | Apply(context_, eax); |
| 2388 | } |
| 2389 | |
| 2390 | |
| 2391 | void FullCodeGenerator::EmitMathPow(ZoneList<Expression*>* args) { |
| 2392 | // Load the arguments on the stack and call the runtime function. |
| 2393 | ASSERT(args->length() == 2); |
| 2394 | VisitForValue(args->at(0), kStack); |
| 2395 | VisitForValue(args->at(1), kStack); |
| 2396 | __ CallRuntime(Runtime::kMath_pow, 2); |
| 2397 | Apply(context_, eax); |
| 2398 | } |
| 2399 | |
| 2400 | |
| 2401 | void FullCodeGenerator::EmitSetValueOf(ZoneList<Expression*>* args) { |
| 2402 | ASSERT(args->length() == 2); |
| 2403 | |
| 2404 | VisitForValue(args->at(0), kStack); // Load the object. |
| 2405 | VisitForValue(args->at(1), kAccumulator); // Load the value. |
| 2406 | __ pop(ebx); // eax = value. ebx = object. |
| 2407 | |
| 2408 | Label done; |
| 2409 | // If the object is a smi, return the value. |
| 2410 | __ test(ebx, Immediate(kSmiTagMask)); |
| 2411 | __ j(zero, &done); |
| 2412 | |
| 2413 | // If the object is not a value type, return the value. |
| 2414 | __ CmpObjectType(ebx, JS_VALUE_TYPE, ecx); |
| 2415 | __ j(not_equal, &done); |
| 2416 | |
| 2417 | // Store the value. |
| 2418 | __ mov(FieldOperand(ebx, JSValue::kValueOffset), eax); |
| 2419 | // Update the write barrier. Save the value as it will be |
| 2420 | // overwritten by the write barrier code and is needed afterward. |
| 2421 | __ mov(edx, eax); |
| 2422 | __ RecordWrite(ebx, JSValue::kValueOffset, edx, ecx); |
| 2423 | |
| 2424 | __ bind(&done); |
| 2425 | Apply(context_, eax); |
| 2426 | } |
| 2427 | |
| 2428 | |
| 2429 | void FullCodeGenerator::EmitNumberToString(ZoneList<Expression*>* args) { |
| 2430 | ASSERT_EQ(args->length(), 1); |
| 2431 | |
| 2432 | // Load the argument on the stack and call the stub. |
| 2433 | VisitForValue(args->at(0), kStack); |
| 2434 | |
| 2435 | NumberToStringStub stub; |
| 2436 | __ CallStub(&stub); |
| 2437 | Apply(context_, eax); |
| 2438 | } |
| 2439 | |
| 2440 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2441 | void FullCodeGenerator::EmitStringCharFromCode(ZoneList<Expression*>* args) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2442 | ASSERT(args->length() == 1); |
| 2443 | |
| 2444 | VisitForValue(args->at(0), kAccumulator); |
| 2445 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2446 | Label done; |
| 2447 | StringCharFromCodeGenerator generator(eax, ebx); |
| 2448 | generator.GenerateFast(masm_); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2449 | __ jmp(&done); |
| 2450 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2451 | NopRuntimeCallHelper call_helper; |
| 2452 | generator.GenerateSlow(masm_, call_helper); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2453 | |
| 2454 | __ bind(&done); |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2455 | Apply(context_, ebx); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2456 | } |
| 2457 | |
| 2458 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2459 | void FullCodeGenerator::EmitStringCharCodeAt(ZoneList<Expression*>* args) { |
| 2460 | ASSERT(args->length() == 2); |
| 2461 | |
| 2462 | VisitForValue(args->at(0), kStack); |
| 2463 | VisitForValue(args->at(1), kAccumulator); |
| 2464 | |
| 2465 | Register object = ebx; |
| 2466 | Register index = eax; |
| 2467 | Register scratch = ecx; |
| 2468 | Register result = edx; |
| 2469 | |
| 2470 | __ pop(object); |
| 2471 | |
| 2472 | Label need_conversion; |
| 2473 | Label index_out_of_range; |
| 2474 | Label done; |
| 2475 | StringCharCodeAtGenerator generator(object, |
| 2476 | index, |
| 2477 | scratch, |
| 2478 | result, |
| 2479 | &need_conversion, |
| 2480 | &need_conversion, |
| 2481 | &index_out_of_range, |
| 2482 | STRING_INDEX_IS_NUMBER); |
| 2483 | generator.GenerateFast(masm_); |
| 2484 | __ jmp(&done); |
| 2485 | |
| 2486 | __ bind(&index_out_of_range); |
| 2487 | // When the index is out of range, the spec requires us to return |
| 2488 | // NaN. |
| 2489 | __ Set(result, Immediate(Factory::nan_value())); |
| 2490 | __ jmp(&done); |
| 2491 | |
| 2492 | __ bind(&need_conversion); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2493 | // Move the undefined value into the result register, which will |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2494 | // trigger conversion. |
| 2495 | __ Set(result, Immediate(Factory::undefined_value())); |
| 2496 | __ jmp(&done); |
| 2497 | |
| 2498 | NopRuntimeCallHelper call_helper; |
| 2499 | generator.GenerateSlow(masm_, call_helper); |
| 2500 | |
| 2501 | __ bind(&done); |
| 2502 | Apply(context_, result); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2503 | } |
| 2504 | |
ricow@chromium.org | 30ce411 | 2010-05-31 10:38:25 +0000 | [diff] [blame] | 2505 | |
| 2506 | void FullCodeGenerator::EmitStringCharAt(ZoneList<Expression*>* args) { |
| 2507 | ASSERT(args->length() == 2); |
| 2508 | |
| 2509 | VisitForValue(args->at(0), kStack); |
| 2510 | VisitForValue(args->at(1), kAccumulator); |
| 2511 | |
| 2512 | Register object = ebx; |
| 2513 | Register index = eax; |
| 2514 | Register scratch1 = ecx; |
| 2515 | Register scratch2 = edx; |
| 2516 | Register result = eax; |
| 2517 | |
| 2518 | __ pop(object); |
| 2519 | |
| 2520 | Label need_conversion; |
| 2521 | Label index_out_of_range; |
| 2522 | Label done; |
| 2523 | StringCharAtGenerator generator(object, |
| 2524 | index, |
| 2525 | scratch1, |
| 2526 | scratch2, |
| 2527 | result, |
| 2528 | &need_conversion, |
| 2529 | &need_conversion, |
| 2530 | &index_out_of_range, |
| 2531 | STRING_INDEX_IS_NUMBER); |
| 2532 | generator.GenerateFast(masm_); |
| 2533 | __ jmp(&done); |
| 2534 | |
| 2535 | __ bind(&index_out_of_range); |
| 2536 | // When the index is out of range, the spec requires us to return |
| 2537 | // the empty string. |
| 2538 | __ Set(result, Immediate(Factory::empty_string())); |
| 2539 | __ jmp(&done); |
| 2540 | |
| 2541 | __ bind(&need_conversion); |
| 2542 | // Move smi zero into the result register, which will trigger |
| 2543 | // conversion. |
| 2544 | __ Set(result, Immediate(Smi::FromInt(0))); |
| 2545 | __ jmp(&done); |
| 2546 | |
| 2547 | NopRuntimeCallHelper call_helper; |
| 2548 | generator.GenerateSlow(masm_, call_helper); |
| 2549 | |
| 2550 | __ bind(&done); |
| 2551 | Apply(context_, result); |
| 2552 | } |
| 2553 | |
| 2554 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2555 | void FullCodeGenerator::EmitStringAdd(ZoneList<Expression*>* args) { |
| 2556 | ASSERT_EQ(2, args->length()); |
| 2557 | |
| 2558 | VisitForValue(args->at(0), kStack); |
| 2559 | VisitForValue(args->at(1), kStack); |
| 2560 | |
| 2561 | StringAddStub stub(NO_STRING_ADD_FLAGS); |
| 2562 | __ CallStub(&stub); |
| 2563 | Apply(context_, eax); |
| 2564 | } |
| 2565 | |
| 2566 | |
| 2567 | void FullCodeGenerator::EmitStringCompare(ZoneList<Expression*>* args) { |
| 2568 | ASSERT_EQ(2, args->length()); |
| 2569 | |
| 2570 | VisitForValue(args->at(0), kStack); |
| 2571 | VisitForValue(args->at(1), kStack); |
| 2572 | |
| 2573 | StringCompareStub stub; |
| 2574 | __ CallStub(&stub); |
| 2575 | Apply(context_, eax); |
| 2576 | } |
| 2577 | |
| 2578 | |
| 2579 | void FullCodeGenerator::EmitMathSin(ZoneList<Expression*>* args) { |
| 2580 | // Load the argument on the stack and call the stub. |
| 2581 | TranscendentalCacheStub stub(TranscendentalCache::SIN); |
| 2582 | ASSERT(args->length() == 1); |
| 2583 | VisitForValue(args->at(0), kStack); |
| 2584 | __ CallStub(&stub); |
| 2585 | Apply(context_, eax); |
| 2586 | } |
| 2587 | |
| 2588 | |
| 2589 | void FullCodeGenerator::EmitMathCos(ZoneList<Expression*>* args) { |
| 2590 | // Load the argument on the stack and call the stub. |
| 2591 | TranscendentalCacheStub stub(TranscendentalCache::COS); |
| 2592 | ASSERT(args->length() == 1); |
| 2593 | VisitForValue(args->at(0), kStack); |
| 2594 | __ CallStub(&stub); |
| 2595 | Apply(context_, eax); |
| 2596 | } |
| 2597 | |
| 2598 | |
| 2599 | void FullCodeGenerator::EmitMathSqrt(ZoneList<Expression*>* args) { |
| 2600 | // Load the argument on the stack and call the runtime function. |
| 2601 | ASSERT(args->length() == 1); |
| 2602 | VisitForValue(args->at(0), kStack); |
| 2603 | __ CallRuntime(Runtime::kMath_sqrt, 1); |
| 2604 | Apply(context_, eax); |
| 2605 | } |
| 2606 | |
| 2607 | |
| 2608 | void FullCodeGenerator::EmitCallFunction(ZoneList<Expression*>* args) { |
| 2609 | ASSERT(args->length() >= 2); |
| 2610 | |
| 2611 | int arg_count = args->length() - 2; // For receiver and function. |
| 2612 | VisitForValue(args->at(0), kStack); // Receiver. |
| 2613 | for (int i = 0; i < arg_count; i++) { |
| 2614 | VisitForValue(args->at(i + 1), kStack); |
| 2615 | } |
| 2616 | VisitForValue(args->at(arg_count + 1), kAccumulator); // Function. |
| 2617 | |
| 2618 | // InvokeFunction requires function in edi. Move it in there. |
| 2619 | if (!result_register().is(edi)) __ mov(edi, result_register()); |
| 2620 | ParameterCount count(arg_count); |
| 2621 | __ InvokeFunction(edi, count, CALL_FUNCTION); |
| 2622 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 2623 | Apply(context_, eax); |
| 2624 | } |
| 2625 | |
| 2626 | |
| 2627 | void FullCodeGenerator::EmitRegExpConstructResult(ZoneList<Expression*>* args) { |
| 2628 | ASSERT(args->length() == 3); |
| 2629 | VisitForValue(args->at(0), kStack); |
| 2630 | VisitForValue(args->at(1), kStack); |
| 2631 | VisitForValue(args->at(2), kStack); |
| 2632 | __ CallRuntime(Runtime::kRegExpConstructResult, 3); |
| 2633 | Apply(context_, eax); |
| 2634 | } |
| 2635 | |
| 2636 | |
| 2637 | void FullCodeGenerator::EmitSwapElements(ZoneList<Expression*>* args) { |
| 2638 | ASSERT(args->length() == 3); |
| 2639 | VisitForValue(args->at(0), kStack); |
| 2640 | VisitForValue(args->at(1), kStack); |
| 2641 | VisitForValue(args->at(2), kStack); |
| 2642 | __ CallRuntime(Runtime::kSwapElements, 3); |
| 2643 | Apply(context_, eax); |
| 2644 | } |
| 2645 | |
| 2646 | |
| 2647 | void FullCodeGenerator::EmitGetFromCache(ZoneList<Expression*>* args) { |
| 2648 | ASSERT_EQ(2, args->length()); |
| 2649 | |
| 2650 | ASSERT_NE(NULL, args->at(0)->AsLiteral()); |
| 2651 | int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->handle()))->value(); |
| 2652 | |
| 2653 | Handle<FixedArray> jsfunction_result_caches( |
| 2654 | Top::global_context()->jsfunction_result_caches()); |
| 2655 | if (jsfunction_result_caches->length() <= cache_id) { |
| 2656 | __ Abort("Attempt to use undefined cache."); |
| 2657 | __ mov(eax, Factory::undefined_value()); |
| 2658 | Apply(context_, eax); |
| 2659 | return; |
| 2660 | } |
| 2661 | |
| 2662 | VisitForValue(args->at(1), kAccumulator); |
| 2663 | |
| 2664 | Register key = eax; |
| 2665 | Register cache = ebx; |
| 2666 | Register tmp = ecx; |
| 2667 | __ mov(cache, CodeGenerator::ContextOperand(esi, Context::GLOBAL_INDEX)); |
| 2668 | __ mov(cache, |
| 2669 | FieldOperand(cache, GlobalObject::kGlobalContextOffset)); |
| 2670 | __ mov(cache, |
| 2671 | CodeGenerator::ContextOperand( |
| 2672 | cache, Context::JSFUNCTION_RESULT_CACHES_INDEX)); |
| 2673 | __ mov(cache, |
| 2674 | FieldOperand(cache, FixedArray::OffsetOfElementAt(cache_id))); |
| 2675 | |
| 2676 | Label done, not_found; |
| 2677 | // tmp now holds finger offset as a smi. |
| 2678 | ASSERT(kSmiTag == 0 && kSmiTagSize == 1); |
| 2679 | __ mov(tmp, FieldOperand(cache, JSFunctionResultCache::kFingerOffset)); |
| 2680 | __ cmp(key, CodeGenerator::FixedArrayElementOperand(cache, tmp)); |
| 2681 | __ j(not_equal, ¬_found); |
| 2682 | |
| 2683 | __ mov(eax, CodeGenerator::FixedArrayElementOperand(cache, tmp, 1)); |
| 2684 | __ jmp(&done); |
| 2685 | |
| 2686 | __ bind(¬_found); |
| 2687 | // Call runtime to perform the lookup. |
| 2688 | __ push(cache); |
| 2689 | __ push(key); |
| 2690 | __ CallRuntime(Runtime::kGetFromCache, 2); |
| 2691 | |
| 2692 | __ bind(&done); |
| 2693 | Apply(context_, eax); |
| 2694 | } |
| 2695 | |
| 2696 | |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 2697 | void FullCodeGenerator::EmitIsRegExpEquivalent(ZoneList<Expression*>* args) { |
| 2698 | ASSERT_EQ(2, args->length()); |
| 2699 | |
| 2700 | Register right = eax; |
| 2701 | Register left = ebx; |
| 2702 | Register tmp = ecx; |
| 2703 | |
| 2704 | VisitForValue(args->at(0), kStack); |
| 2705 | VisitForValue(args->at(1), kAccumulator); |
| 2706 | __ pop(left); |
| 2707 | |
| 2708 | Label done, fail, ok; |
| 2709 | __ cmp(left, Operand(right)); |
| 2710 | __ j(equal, &ok); |
| 2711 | // Fail if either is a non-HeapObject. |
| 2712 | __ mov(tmp, left); |
| 2713 | __ and_(Operand(tmp), right); |
| 2714 | __ test(Operand(tmp), Immediate(kSmiTagMask)); |
| 2715 | __ j(zero, &fail); |
lrn@chromium.org | 1937588 | 2010-08-09 12:49:57 +0000 | [diff] [blame] | 2716 | __ CmpObjectType(left, JS_REGEXP_TYPE, tmp); |
lrn@chromium.org | c4e51ac | 2010-08-09 09:47:21 +0000 | [diff] [blame] | 2717 | __ j(not_equal, &fail); |
| 2718 | __ cmp(tmp, FieldOperand(right, HeapObject::kMapOffset)); |
| 2719 | __ j(not_equal, &fail); |
| 2720 | __ mov(tmp, FieldOperand(left, JSRegExp::kDataOffset)); |
| 2721 | __ cmp(tmp, FieldOperand(right, JSRegExp::kDataOffset)); |
| 2722 | __ j(equal, &ok); |
| 2723 | __ bind(&fail); |
| 2724 | __ mov(eax, Immediate(Factory::false_value())); |
| 2725 | __ jmp(&done); |
| 2726 | __ bind(&ok); |
| 2727 | __ mov(eax, Immediate(Factory::true_value())); |
| 2728 | __ bind(&done); |
| 2729 | |
| 2730 | Apply(context_, eax); |
| 2731 | } |
| 2732 | |
| 2733 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2734 | void FullCodeGenerator::VisitCallRuntime(CallRuntime* expr) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2735 | Handle<String> name = expr->name(); |
| 2736 | if (name->length() > 0 && name->Get(0) == '_') { |
| 2737 | Comment cmnt(masm_, "[ InlineRuntimeCall"); |
| 2738 | EmitInlineRuntimeCall(expr); |
| 2739 | return; |
| 2740 | } |
| 2741 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2742 | Comment cmnt(masm_, "[ CallRuntime"); |
| 2743 | ZoneList<Expression*>* args = expr->arguments(); |
| 2744 | |
| 2745 | if (expr->is_jsruntime()) { |
| 2746 | // Prepare for calling JS runtime function. |
| 2747 | __ mov(eax, CodeGenerator::GlobalObject()); |
| 2748 | __ push(FieldOperand(eax, GlobalObject::kBuiltinsOffset)); |
| 2749 | } |
| 2750 | |
| 2751 | // Push the arguments ("left-to-right"). |
| 2752 | int arg_count = args->length(); |
| 2753 | for (int i = 0; i < arg_count; i++) { |
| 2754 | VisitForValue(args->at(i), kStack); |
| 2755 | } |
| 2756 | |
| 2757 | if (expr->is_jsruntime()) { |
| 2758 | // Call the JS runtime function via a call IC. |
| 2759 | __ Set(ecx, Immediate(expr->name())); |
| 2760 | InLoopFlag in_loop = (loop_depth() > 0) ? IN_LOOP : NOT_IN_LOOP; |
| 2761 | Handle<Code> ic = CodeGenerator::ComputeCallInitialize(arg_count, in_loop); |
| 2762 | __ call(ic, RelocInfo::CODE_TARGET); |
| 2763 | // Restore context register. |
| 2764 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 2765 | } else { |
| 2766 | // Call the C runtime function. |
| 2767 | __ CallRuntime(expr->function(), arg_count); |
| 2768 | } |
| 2769 | Apply(context_, eax); |
| 2770 | } |
| 2771 | |
| 2772 | |
| 2773 | void FullCodeGenerator::VisitUnaryOperation(UnaryOperation* expr) { |
| 2774 | switch (expr->op()) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2775 | case Token::DELETE: { |
| 2776 | Comment cmnt(masm_, "[ UnaryOperation (DELETE)"); |
| 2777 | Property* prop = expr->expression()->AsProperty(); |
| 2778 | Variable* var = expr->expression()->AsVariableProxy()->AsVariable(); |
| 2779 | if (prop == NULL && var == NULL) { |
| 2780 | // Result of deleting non-property, non-variable reference is true. |
| 2781 | // The subexpression may have side effects. |
| 2782 | VisitForEffect(expr->expression()); |
| 2783 | Apply(context_, true); |
| 2784 | } else if (var != NULL && |
| 2785 | !var->is_global() && |
| 2786 | var->slot() != NULL && |
| 2787 | var->slot()->type() != Slot::LOOKUP) { |
| 2788 | // Result of deleting non-global, non-dynamic variables is false. |
| 2789 | // The subexpression does not have side effects. |
| 2790 | Apply(context_, false); |
| 2791 | } else { |
| 2792 | // Property or variable reference. Call the delete builtin with |
| 2793 | // object and property name as arguments. |
| 2794 | if (prop != NULL) { |
| 2795 | VisitForValue(prop->obj(), kStack); |
| 2796 | VisitForValue(prop->key(), kStack); |
| 2797 | } else if (var->is_global()) { |
| 2798 | __ push(CodeGenerator::GlobalObject()); |
| 2799 | __ push(Immediate(var->name())); |
| 2800 | } else { |
| 2801 | // Non-global variable. Call the runtime to look up the context |
| 2802 | // where the variable was introduced. |
| 2803 | __ push(context_register()); |
| 2804 | __ push(Immediate(var->name())); |
| 2805 | __ CallRuntime(Runtime::kLookupContext, 2); |
| 2806 | __ push(eax); |
| 2807 | __ push(Immediate(var->name())); |
| 2808 | } |
| 2809 | __ InvokeBuiltin(Builtins::DELETE, CALL_FUNCTION); |
| 2810 | Apply(context_, eax); |
| 2811 | } |
| 2812 | break; |
| 2813 | } |
| 2814 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2815 | case Token::VOID: { |
| 2816 | Comment cmnt(masm_, "[ UnaryOperation (VOID)"); |
| 2817 | VisitForEffect(expr->expression()); |
| 2818 | switch (context_) { |
| 2819 | case Expression::kUninitialized: |
| 2820 | UNREACHABLE(); |
| 2821 | break; |
| 2822 | case Expression::kEffect: |
| 2823 | break; |
| 2824 | case Expression::kValue: |
| 2825 | switch (location_) { |
| 2826 | case kAccumulator: |
| 2827 | __ mov(result_register(), Factory::undefined_value()); |
| 2828 | break; |
| 2829 | case kStack: |
| 2830 | __ push(Immediate(Factory::undefined_value())); |
| 2831 | break; |
| 2832 | } |
| 2833 | break; |
| 2834 | case Expression::kTestValue: |
| 2835 | // Value is false so it's needed. |
| 2836 | switch (location_) { |
| 2837 | case kAccumulator: |
| 2838 | __ mov(result_register(), Factory::undefined_value()); |
| 2839 | break; |
| 2840 | case kStack: |
| 2841 | __ push(Immediate(Factory::undefined_value())); |
| 2842 | break; |
| 2843 | } |
| 2844 | // Fall through. |
| 2845 | case Expression::kTest: |
| 2846 | case Expression::kValueTest: |
| 2847 | __ jmp(false_label_); |
| 2848 | break; |
| 2849 | } |
| 2850 | break; |
| 2851 | } |
| 2852 | |
| 2853 | case Token::NOT: { |
| 2854 | Comment cmnt(masm_, "[ UnaryOperation (NOT)"); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2855 | Label materialize_true, materialize_false; |
| 2856 | Label* if_true = NULL; |
| 2857 | Label* if_false = NULL; |
| 2858 | |
| 2859 | // Notice that the labels are swapped. |
| 2860 | PrepareTest(&materialize_true, &materialize_false, &if_false, &if_true); |
| 2861 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2862 | VisitForControl(expr->expression(), if_true, if_false); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2863 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2864 | Apply(context_, if_false, if_true); // Labels swapped. |
| 2865 | break; |
| 2866 | } |
| 2867 | |
| 2868 | case Token::TYPEOF: { |
| 2869 | Comment cmnt(masm_, "[ UnaryOperation (TYPEOF)"); |
| 2870 | VariableProxy* proxy = expr->expression()->AsVariableProxy(); |
| 2871 | if (proxy != NULL && |
| 2872 | !proxy->var()->is_this() && |
| 2873 | proxy->var()->is_global()) { |
| 2874 | Comment cmnt(masm_, "Global variable"); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2875 | __ mov(eax, CodeGenerator::GlobalObject()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2876 | __ mov(ecx, Immediate(proxy->name())); |
| 2877 | Handle<Code> ic(Builtins::builtin(Builtins::LoadIC_Initialize)); |
| 2878 | // Use a regular load, not a contextual load, to avoid a reference |
| 2879 | // error. |
| 2880 | __ call(ic, RelocInfo::CODE_TARGET); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2881 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2882 | } else if (proxy != NULL && |
| 2883 | proxy->var()->slot() != NULL && |
| 2884 | proxy->var()->slot()->type() == Slot::LOOKUP) { |
| 2885 | __ push(esi); |
| 2886 | __ push(Immediate(proxy->name())); |
| 2887 | __ CallRuntime(Runtime::kLoadContextSlotNoReferenceError, 2); |
| 2888 | __ push(eax); |
| 2889 | } else { |
| 2890 | // This expression cannot throw a reference error at the top level. |
| 2891 | VisitForValue(expr->expression(), kStack); |
| 2892 | } |
| 2893 | |
| 2894 | __ CallRuntime(Runtime::kTypeof, 1); |
| 2895 | Apply(context_, eax); |
| 2896 | break; |
| 2897 | } |
| 2898 | |
| 2899 | case Token::ADD: { |
| 2900 | Comment cmt(masm_, "[ UnaryOperation (ADD)"); |
| 2901 | VisitForValue(expr->expression(), kAccumulator); |
| 2902 | Label no_conversion; |
| 2903 | __ test(result_register(), Immediate(kSmiTagMask)); |
| 2904 | __ j(zero, &no_conversion); |
| 2905 | __ push(result_register()); |
| 2906 | __ InvokeBuiltin(Builtins::TO_NUMBER, CALL_FUNCTION); |
| 2907 | __ bind(&no_conversion); |
| 2908 | Apply(context_, result_register()); |
| 2909 | break; |
| 2910 | } |
| 2911 | |
| 2912 | case Token::SUB: { |
| 2913 | Comment cmt(masm_, "[ UnaryOperation (SUB)"); |
erik.corry@gmail.com | 4a2e25e | 2010-07-07 12:22:46 +0000 | [diff] [blame] | 2914 | bool can_overwrite = |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2915 | (expr->expression()->AsBinaryOperation() != NULL && |
| 2916 | expr->expression()->AsBinaryOperation()->ResultOverwriteAllowed()); |
erik.corry@gmail.com | 4a2e25e | 2010-07-07 12:22:46 +0000 | [diff] [blame] | 2917 | UnaryOverwriteMode overwrite = |
| 2918 | can_overwrite ? UNARY_OVERWRITE : UNARY_NO_OVERWRITE; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2919 | GenericUnaryOpStub stub(Token::SUB, overwrite); |
| 2920 | // GenericUnaryOpStub expects the argument to be in the |
| 2921 | // accumulator register eax. |
| 2922 | VisitForValue(expr->expression(), kAccumulator); |
| 2923 | __ CallStub(&stub); |
| 2924 | Apply(context_, eax); |
| 2925 | break; |
| 2926 | } |
| 2927 | |
| 2928 | case Token::BIT_NOT: { |
| 2929 | Comment cmt(masm_, "[ UnaryOperation (BIT_NOT)"); |
erik.corry@gmail.com | 4a2e25e | 2010-07-07 12:22:46 +0000 | [diff] [blame] | 2930 | bool can_overwrite = |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2931 | (expr->expression()->AsBinaryOperation() != NULL && |
| 2932 | expr->expression()->AsBinaryOperation()->ResultOverwriteAllowed()); |
erik.corry@gmail.com | 4a2e25e | 2010-07-07 12:22:46 +0000 | [diff] [blame] | 2933 | UnaryOverwriteMode overwrite = |
| 2934 | can_overwrite ? UNARY_OVERWRITE : UNARY_NO_OVERWRITE; |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2935 | GenericUnaryOpStub stub(Token::BIT_NOT, overwrite); |
| 2936 | // GenericUnaryOpStub expects the argument to be in the |
| 2937 | // accumulator register eax. |
| 2938 | VisitForValue(expr->expression(), kAccumulator); |
| 2939 | // Avoid calling the stub for Smis. |
| 2940 | Label smi, done; |
| 2941 | __ test(result_register(), Immediate(kSmiTagMask)); |
| 2942 | __ j(zero, &smi); |
| 2943 | // Non-smi: call stub leaving result in accumulator register. |
| 2944 | __ CallStub(&stub); |
| 2945 | __ jmp(&done); |
| 2946 | // Perform operation directly on Smis. |
| 2947 | __ bind(&smi); |
| 2948 | __ not_(result_register()); |
| 2949 | __ and_(result_register(), ~kSmiTagMask); // Remove inverted smi-tag. |
| 2950 | __ bind(&done); |
| 2951 | Apply(context_, result_register()); |
| 2952 | break; |
| 2953 | } |
| 2954 | |
| 2955 | default: |
| 2956 | UNREACHABLE(); |
| 2957 | } |
| 2958 | } |
| 2959 | |
| 2960 | |
| 2961 | void FullCodeGenerator::VisitCountOperation(CountOperation* expr) { |
| 2962 | Comment cmnt(masm_, "[ CountOperation"); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2963 | // Invalid left-hand sides are rewritten to have a 'throw ReferenceError' |
| 2964 | // as the left-hand side. |
| 2965 | if (!expr->expression()->IsValidLeftHandSide()) { |
| 2966 | VisitForEffect(expr->expression()); |
| 2967 | return; |
| 2968 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2969 | |
| 2970 | // Expression can only be a property, a global or a (parameter or local) |
| 2971 | // slot. Variables with rewrite to .arguments are treated as KEYED_PROPERTY. |
| 2972 | enum LhsKind { VARIABLE, NAMED_PROPERTY, KEYED_PROPERTY }; |
| 2973 | LhsKind assign_type = VARIABLE; |
| 2974 | Property* prop = expr->expression()->AsProperty(); |
| 2975 | // In case of a property we use the uninitialized expression context |
| 2976 | // of the key to detect a named property. |
| 2977 | if (prop != NULL) { |
| 2978 | assign_type = |
| 2979 | (prop->key()->IsPropertyName()) ? NAMED_PROPERTY : KEYED_PROPERTY; |
| 2980 | } |
| 2981 | |
| 2982 | // Evaluate expression and get value. |
| 2983 | if (assign_type == VARIABLE) { |
| 2984 | ASSERT(expr->expression()->AsVariableProxy()->var() != NULL); |
| 2985 | Location saved_location = location_; |
| 2986 | location_ = kAccumulator; |
| 2987 | EmitVariableLoad(expr->expression()->AsVariableProxy()->var(), |
| 2988 | Expression::kValue); |
| 2989 | location_ = saved_location; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 2990 | } else { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2991 | // Reserve space for result of postfix operation. |
| 2992 | if (expr->is_postfix() && context_ != Expression::kEffect) { |
| 2993 | __ push(Immediate(Smi::FromInt(0))); |
| 2994 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2995 | if (assign_type == NAMED_PROPERTY) { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2996 | // Put the object both on the stack and in the accumulator. |
| 2997 | VisitForValue(prop->obj(), kAccumulator); |
| 2998 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 2999 | EmitNamedPropertyLoad(prop); |
| 3000 | } else { |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 3001 | VisitForValue(prop->obj(), kStack); |
| 3002 | VisitForValue(prop->key(), kAccumulator); |
| 3003 | __ mov(edx, Operand(esp, 0)); |
| 3004 | __ push(eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3005 | EmitKeyedPropertyLoad(prop); |
| 3006 | } |
| 3007 | } |
| 3008 | |
| 3009 | // Call ToNumber only if operand is not a smi. |
| 3010 | Label no_conversion; |
| 3011 | __ test(eax, Immediate(kSmiTagMask)); |
| 3012 | __ j(zero, &no_conversion); |
| 3013 | __ push(eax); |
| 3014 | __ InvokeBuiltin(Builtins::TO_NUMBER, CALL_FUNCTION); |
| 3015 | __ bind(&no_conversion); |
| 3016 | |
| 3017 | // Save result for postfix expressions. |
| 3018 | if (expr->is_postfix()) { |
| 3019 | switch (context_) { |
| 3020 | case Expression::kUninitialized: |
| 3021 | UNREACHABLE(); |
| 3022 | case Expression::kEffect: |
| 3023 | // Do not save result. |
| 3024 | break; |
| 3025 | case Expression::kValue: |
| 3026 | case Expression::kTest: |
| 3027 | case Expression::kValueTest: |
| 3028 | case Expression::kTestValue: |
| 3029 | // Save the result on the stack. If we have a named or keyed property |
| 3030 | // we store the result under the receiver that is currently on top |
| 3031 | // of the stack. |
| 3032 | switch (assign_type) { |
| 3033 | case VARIABLE: |
| 3034 | __ push(eax); |
| 3035 | break; |
| 3036 | case NAMED_PROPERTY: |
| 3037 | __ mov(Operand(esp, kPointerSize), eax); |
| 3038 | break; |
| 3039 | case KEYED_PROPERTY: |
| 3040 | __ mov(Operand(esp, 2 * kPointerSize), eax); |
| 3041 | break; |
| 3042 | } |
| 3043 | break; |
| 3044 | } |
| 3045 | } |
| 3046 | |
| 3047 | // Inline smi case if we are in a loop. |
| 3048 | Label stub_call, done; |
| 3049 | if (loop_depth() > 0) { |
| 3050 | if (expr->op() == Token::INC) { |
| 3051 | __ add(Operand(eax), Immediate(Smi::FromInt(1))); |
| 3052 | } else { |
| 3053 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
| 3054 | } |
| 3055 | __ j(overflow, &stub_call); |
| 3056 | // We could eliminate this smi check if we split the code at |
| 3057 | // the first smi check before calling ToNumber. |
| 3058 | __ test(eax, Immediate(kSmiTagMask)); |
| 3059 | __ j(zero, &done); |
| 3060 | __ bind(&stub_call); |
| 3061 | // Call stub. Undo operation first. |
| 3062 | if (expr->op() == Token::INC) { |
| 3063 | __ sub(Operand(eax), Immediate(Smi::FromInt(1))); |
| 3064 | } else { |
| 3065 | __ add(Operand(eax), Immediate(Smi::FromInt(1))); |
| 3066 | } |
| 3067 | } |
| 3068 | // Call stub for +1/-1. |
| 3069 | GenericBinaryOpStub stub(expr->binary_op(), |
| 3070 | NO_OVERWRITE, |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 3071 | NO_GENERIC_BINARY_FLAGS, |
sgjesse@chromium.org | df7a284 | 2010-03-25 14:34:15 +0000 | [diff] [blame] | 3072 | TypeInfo::Unknown()); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3073 | stub.GenerateCall(masm(), eax, Smi::FromInt(1)); |
| 3074 | __ bind(&done); |
| 3075 | |
| 3076 | // Store the value returned in eax. |
| 3077 | switch (assign_type) { |
| 3078 | case VARIABLE: |
| 3079 | if (expr->is_postfix()) { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3080 | // Perform the assignment as if via '='. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3081 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3082 | Token::ASSIGN, |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3083 | Expression::kEffect); |
| 3084 | // For all contexts except kEffect: We have the result on |
| 3085 | // top of the stack. |
| 3086 | if (context_ != Expression::kEffect) { |
| 3087 | ApplyTOS(context_); |
| 3088 | } |
| 3089 | } else { |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3090 | // Perform the assignment as if via '='. |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3091 | EmitVariableAssignment(expr->expression()->AsVariableProxy()->var(), |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3092 | Token::ASSIGN, |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3093 | context_); |
| 3094 | } |
| 3095 | break; |
| 3096 | case NAMED_PROPERTY: { |
| 3097 | __ mov(ecx, prop->key()->AsLiteral()->handle()); |
| 3098 | __ pop(edx); |
| 3099 | Handle<Code> ic(Builtins::builtin(Builtins::StoreIC_Initialize)); |
| 3100 | __ call(ic, RelocInfo::CODE_TARGET); |
| 3101 | // This nop signals to the IC that there is no inlined code at the call |
| 3102 | // site for it to patch. |
| 3103 | __ nop(); |
| 3104 | if (expr->is_postfix()) { |
| 3105 | if (context_ != Expression::kEffect) { |
| 3106 | ApplyTOS(context_); |
| 3107 | } |
| 3108 | } else { |
| 3109 | Apply(context_, eax); |
| 3110 | } |
| 3111 | break; |
| 3112 | } |
| 3113 | case KEYED_PROPERTY: { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 3114 | __ pop(ecx); |
| 3115 | __ pop(edx); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3116 | Handle<Code> ic(Builtins::builtin(Builtins::KeyedStoreIC_Initialize)); |
| 3117 | __ call(ic, RelocInfo::CODE_TARGET); |
| 3118 | // This nop signals to the IC that there is no inlined code at the call |
| 3119 | // site for it to patch. |
| 3120 | __ nop(); |
| 3121 | if (expr->is_postfix()) { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 3122 | // Result is on the stack |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3123 | if (context_ != Expression::kEffect) { |
| 3124 | ApplyTOS(context_); |
| 3125 | } |
| 3126 | } else { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 3127 | Apply(context_, eax); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3128 | } |
| 3129 | break; |
| 3130 | } |
| 3131 | } |
| 3132 | } |
| 3133 | |
| 3134 | |
| 3135 | void FullCodeGenerator::VisitBinaryOperation(BinaryOperation* expr) { |
| 3136 | Comment cmnt(masm_, "[ BinaryOperation"); |
| 3137 | switch (expr->op()) { |
| 3138 | case Token::COMMA: |
| 3139 | VisitForEffect(expr->left()); |
| 3140 | Visit(expr->right()); |
| 3141 | break; |
| 3142 | |
| 3143 | case Token::OR: |
| 3144 | case Token::AND: |
| 3145 | EmitLogicalOperation(expr); |
| 3146 | break; |
| 3147 | |
| 3148 | case Token::ADD: |
| 3149 | case Token::SUB: |
| 3150 | case Token::DIV: |
| 3151 | case Token::MOD: |
| 3152 | case Token::MUL: |
| 3153 | case Token::BIT_OR: |
| 3154 | case Token::BIT_AND: |
| 3155 | case Token::BIT_XOR: |
| 3156 | case Token::SHL: |
| 3157 | case Token::SHR: |
| 3158 | case Token::SAR: |
| 3159 | VisitForValue(expr->left(), kStack); |
| 3160 | VisitForValue(expr->right(), kAccumulator); |
| 3161 | EmitBinaryOp(expr->op(), context_); |
| 3162 | break; |
| 3163 | |
| 3164 | default: |
| 3165 | UNREACHABLE(); |
| 3166 | } |
| 3167 | } |
| 3168 | |
| 3169 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3170 | void FullCodeGenerator::EmitNullCompare(bool strict, |
| 3171 | Register obj, |
| 3172 | Register null_const, |
| 3173 | Label* if_true, |
| 3174 | Label* if_false, |
| 3175 | Register scratch) { |
| 3176 | __ cmp(obj, Operand(null_const)); |
| 3177 | if (strict) { |
| 3178 | __ j(equal, if_true); |
| 3179 | } else { |
| 3180 | __ j(equal, if_true); |
| 3181 | __ cmp(obj, Factory::undefined_value()); |
| 3182 | __ j(equal, if_true); |
| 3183 | __ test(obj, Immediate(kSmiTagMask)); |
| 3184 | __ j(zero, if_false); |
| 3185 | // It can be an undetectable object. |
| 3186 | __ mov(scratch, FieldOperand(obj, HeapObject::kMapOffset)); |
| 3187 | __ movzx_b(scratch, FieldOperand(scratch, Map::kBitFieldOffset)); |
| 3188 | __ test(scratch, Immediate(1 << Map::kIsUndetectable)); |
| 3189 | __ j(not_zero, if_true); |
| 3190 | } |
| 3191 | __ jmp(if_false); |
| 3192 | } |
| 3193 | |
| 3194 | |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3195 | void FullCodeGenerator::VisitCompareOperation(CompareOperation* expr) { |
| 3196 | Comment cmnt(masm_, "[ CompareOperation"); |
| 3197 | |
| 3198 | // Always perform the comparison for its control flow. Pack the result |
| 3199 | // into the expression's context after the comparison is performed. |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3200 | |
| 3201 | Label materialize_true, materialize_false; |
| 3202 | Label* if_true = NULL; |
| 3203 | Label* if_false = NULL; |
| 3204 | PrepareTest(&materialize_true, &materialize_false, &if_true, &if_false); |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3205 | |
| 3206 | VisitForValue(expr->left(), kStack); |
| 3207 | switch (expr->op()) { |
| 3208 | case Token::IN: |
| 3209 | VisitForValue(expr->right(), kStack); |
| 3210 | __ InvokeBuiltin(Builtins::IN, CALL_FUNCTION); |
| 3211 | __ cmp(eax, Factory::true_value()); |
| 3212 | __ j(equal, if_true); |
| 3213 | __ jmp(if_false); |
| 3214 | break; |
| 3215 | |
| 3216 | case Token::INSTANCEOF: { |
| 3217 | VisitForValue(expr->right(), kStack); |
| 3218 | InstanceofStub stub; |
| 3219 | __ CallStub(&stub); |
| 3220 | __ test(eax, Operand(eax)); |
| 3221 | __ j(zero, if_true); // The stub returns 0 for true. |
| 3222 | __ jmp(if_false); |
| 3223 | break; |
| 3224 | } |
| 3225 | |
| 3226 | default: { |
| 3227 | VisitForValue(expr->right(), kAccumulator); |
| 3228 | Condition cc = no_condition; |
| 3229 | bool strict = false; |
| 3230 | switch (expr->op()) { |
| 3231 | case Token::EQ_STRICT: |
| 3232 | strict = true; |
| 3233 | // Fall through |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3234 | case Token::EQ: { |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3235 | cc = equal; |
| 3236 | __ pop(edx); |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3237 | // If either operand is constant null we do a fast compare |
| 3238 | // against null. |
| 3239 | Literal* right_literal = expr->right()->AsLiteral(); |
| 3240 | Literal* left_literal = expr->left()->AsLiteral(); |
| 3241 | if (right_literal != NULL && right_literal->handle()->IsNull()) { |
| 3242 | EmitNullCompare(strict, edx, eax, if_true, if_false, ecx); |
| 3243 | Apply(context_, if_true, if_false); |
| 3244 | return; |
| 3245 | } else if (left_literal != NULL && left_literal->handle()->IsNull()) { |
| 3246 | EmitNullCompare(strict, eax, edx, if_true, if_false, ecx); |
| 3247 | Apply(context_, if_true, if_false); |
| 3248 | return; |
| 3249 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3250 | break; |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3251 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 3252 | case Token::LT: |
| 3253 | cc = less; |
| 3254 | __ pop(edx); |
| 3255 | break; |
| 3256 | case Token::GT: |
| 3257 | // Reverse left and right sizes to obtain ECMA-262 conversion order. |
| 3258 | cc = less; |
| 3259 | __ mov(edx, result_register()); |
| 3260 | __ pop(eax); |
| 3261 | break; |
| 3262 | case Token::LTE: |
| 3263 | // Reverse left and right sizes to obtain ECMA-262 conversion order. |
| 3264 | cc = greater_equal; |
| 3265 | __ mov(edx, result_register()); |
| 3266 | __ pop(eax); |
| 3267 | break; |
| 3268 | case Token::GTE: |
| 3269 | cc = greater_equal; |
| 3270 | __ pop(edx); |
| 3271 | break; |
| 3272 | case Token::IN: |
| 3273 | case Token::INSTANCEOF: |
| 3274 | default: |
| 3275 | UNREACHABLE(); |
| 3276 | } |
| 3277 | |
| 3278 | // The comparison stub expects the smi vs. smi case to be handled |
| 3279 | // before it is called. |
| 3280 | Label slow_case; |
| 3281 | __ mov(ecx, Operand(edx)); |
| 3282 | __ or_(ecx, Operand(eax)); |
| 3283 | __ test(ecx, Immediate(kSmiTagMask)); |
| 3284 | __ j(not_zero, &slow_case, not_taken); |
| 3285 | __ cmp(edx, Operand(eax)); |
| 3286 | __ j(cc, if_true); |
| 3287 | __ jmp(if_false); |
| 3288 | |
| 3289 | __ bind(&slow_case); |
| 3290 | CompareStub stub(cc, strict); |
| 3291 | __ CallStub(&stub); |
| 3292 | __ test(eax, Operand(eax)); |
| 3293 | __ j(cc, if_true); |
| 3294 | __ jmp(if_false); |
| 3295 | } |
| 3296 | } |
| 3297 | |
| 3298 | // Convert the result of the comparison into one expected for this |
| 3299 | // expression's context. |
| 3300 | Apply(context_, if_true, if_false); |
| 3301 | } |
| 3302 | |
| 3303 | |
| 3304 | void FullCodeGenerator::VisitThisFunction(ThisFunction* expr) { |
| 3305 | __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 3306 | Apply(context_, eax); |
| 3307 | } |
| 3308 | |
| 3309 | |
| 3310 | Register FullCodeGenerator::result_register() { return eax; } |
| 3311 | |
| 3312 | |
| 3313 | Register FullCodeGenerator::context_register() { return esi; } |
| 3314 | |
| 3315 | |
| 3316 | void FullCodeGenerator::StoreToFrameField(int frame_offset, Register value) { |
| 3317 | ASSERT_EQ(POINTER_SIZE_ALIGN(frame_offset), frame_offset); |
| 3318 | __ mov(Operand(ebp, frame_offset), value); |
| 3319 | } |
| 3320 | |
| 3321 | |
| 3322 | void FullCodeGenerator::LoadContextField(Register dst, int context_index) { |
| 3323 | __ mov(dst, CodeGenerator::ContextOperand(esi, context_index)); |
| 3324 | } |
| 3325 | |
| 3326 | |
| 3327 | // ---------------------------------------------------------------------------- |
| 3328 | // Non-local control flow support. |
| 3329 | |
| 3330 | void FullCodeGenerator::EnterFinallyBlock() { |
| 3331 | // Cook return address on top of stack (smi encoded Code* delta) |
| 3332 | ASSERT(!result_register().is(edx)); |
| 3333 | __ mov(edx, Operand(esp, 0)); |
| 3334 | __ sub(Operand(edx), Immediate(masm_->CodeObject())); |
| 3335 | ASSERT_EQ(1, kSmiTagSize + kSmiShiftSize); |
| 3336 | ASSERT_EQ(0, kSmiTag); |
| 3337 | __ add(edx, Operand(edx)); // Convert to smi. |
| 3338 | __ mov(Operand(esp, 0), edx); |
| 3339 | // Store result register while executing finally block. |
| 3340 | __ push(result_register()); |
| 3341 | } |
| 3342 | |
| 3343 | |
| 3344 | void FullCodeGenerator::ExitFinallyBlock() { |
| 3345 | ASSERT(!result_register().is(edx)); |
| 3346 | // Restore result register from stack. |
| 3347 | __ pop(result_register()); |
| 3348 | // Uncook return address. |
| 3349 | __ mov(edx, Operand(esp, 0)); |
| 3350 | __ sar(edx, 1); // Convert smi to int. |
| 3351 | __ add(Operand(edx), Immediate(masm_->CodeObject())); |
| 3352 | __ mov(Operand(esp, 0), edx); |
| 3353 | // And return. |
| 3354 | __ ret(0); |
| 3355 | } |
| 3356 | |
| 3357 | |
| 3358 | #undef __ |
| 3359 | |
| 3360 | } } // namespace v8::internal |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 3361 | |
| 3362 | #endif // V8_TARGET_ARCH_IA32 |