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