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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "src/v8.h" | 5 #include "src/v8.h" |
| 6 | 6 |
| 7 #if V8_TARGET_ARCH_X87 | 7 #if V8_TARGET_ARCH_X87 |
| 8 | 8 |
| 9 #include "src/code-factory.h" | 9 #include "src/code-factory.h" |
| 10 #include "src/code-stubs.h" | 10 #include "src/code-stubs.h" |
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| 373 if (return_label_.is_bound()) { | 373 if (return_label_.is_bound()) { |
| 374 __ jmp(&return_label_); | 374 __ jmp(&return_label_); |
| 375 } else { | 375 } else { |
| 376 // Common return label | 376 // Common return label |
| 377 __ bind(&return_label_); | 377 __ bind(&return_label_); |
| 378 if (FLAG_trace) { | 378 if (FLAG_trace) { |
| 379 __ push(eax); | 379 __ push(eax); |
| 380 __ CallRuntime(Runtime::kTraceExit, 1); | 380 __ CallRuntime(Runtime::kTraceExit, 1); |
| 381 } | 381 } |
| 382 // Pretend that the exit is a backwards jump to the entry. | 382 // Pretend that the exit is a backwards jump to the entry. |
| 383 int weight = 1; | 383 int distance = masm_->pc_offset(); |
| 384 if (info_->ShouldSelfOptimize()) { | 384 int weight = |
| 385 weight = FLAG_interrupt_budget / FLAG_self_opt_count; | 385 Min(kMaxBackEdgeWeight, Max(1, distance / kCodeSizeMultiplier)); |
| 386 } else { | |
| 387 int distance = masm_->pc_offset(); | |
| 388 weight = Min(kMaxBackEdgeWeight, | |
| 389 Max(1, distance / kCodeSizeMultiplier)); | |
| 390 } | |
| 391 EmitProfilingCounterDecrement(weight); | 386 EmitProfilingCounterDecrement(weight); |
| 392 Label ok; | 387 Label ok; |
| 393 __ j(positive, &ok, Label::kNear); | 388 __ j(positive, &ok, Label::kNear); |
| 394 __ push(eax); | 389 __ push(eax); |
| 395 __ call(isolate()->builtins()->InterruptCheck(), | 390 __ call(isolate()->builtins()->InterruptCheck(), |
| 396 RelocInfo::CODE_TARGET); | 391 RelocInfo::CODE_TARGET); |
| 397 __ pop(eax); | 392 __ pop(eax); |
| 398 EmitProfilingCounterReset(); | 393 EmitProfilingCounterReset(); |
| 399 __ bind(&ok); | 394 __ bind(&ok); |
| 400 #ifdef DEBUG | 395 #ifdef DEBUG |
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| 5162 DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), | 5157 DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
| 5163 Assembler::target_address_at(call_target_address, | 5158 Assembler::target_address_at(call_target_address, |
| 5164 unoptimized_code)); | 5159 unoptimized_code)); |
| 5165 return OSR_AFTER_STACK_CHECK; | 5160 return OSR_AFTER_STACK_CHECK; |
| 5166 } | 5161 } |
| 5167 | 5162 |
| 5168 | 5163 |
| 5169 } } // namespace v8::internal | 5164 } } // namespace v8::internal |
| 5170 | 5165 |
| 5171 #endif // V8_TARGET_ARCH_X87 | 5166 #endif // V8_TARGET_ARCH_X87 |
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