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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 #if V8_TARGET_ARCH_IA32 | 5 #if V8_TARGET_ARCH_IA32 |
6 | 6 |
7 #include "src/code-factory.h" | 7 #include "src/code-factory.h" |
8 #include "src/codegen.h" | 8 #include "src/codegen.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
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511 // The live registers are: | 511 // The live registers are: |
512 // o edi: the JS function object being called | 512 // o edi: the JS function object being called |
513 // o edx: the new target | 513 // o edx: the new target |
514 // o esi: our context | 514 // o esi: our context |
515 // o ebp: the caller's frame pointer | 515 // o ebp: the caller's frame pointer |
516 // o esp: stack pointer (pointing to return address) | 516 // o esp: stack pointer (pointing to return address) |
517 // | 517 // |
518 // The function builds an interpreter frame. See InterpreterFrameConstants in | 518 // The function builds an interpreter frame. See InterpreterFrameConstants in |
519 // frames.h for its layout. | 519 // frames.h for its layout. |
520 void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { | 520 void Builtins::Generate_InterpreterEntryTrampoline(MacroAssembler* masm) { |
| 521 ProfileEntryHookStub::MaybeCallEntryHook(masm); |
| 522 |
521 // Open a frame scope to indicate that there is a frame on the stack. The | 523 // Open a frame scope to indicate that there is a frame on the stack. The |
522 // MANUAL indicates that the scope shouldn't actually generate code to set up | 524 // MANUAL indicates that the scope shouldn't actually generate code to set up |
523 // the frame (that is done below). | 525 // the frame (that is done below). |
524 FrameScope frame_scope(masm, StackFrame::MANUAL); | 526 FrameScope frame_scope(masm, StackFrame::MANUAL); |
525 __ push(ebp); // Caller's frame pointer. | 527 __ push(ebp); // Caller's frame pointer. |
526 __ mov(ebp, esp); | 528 __ mov(ebp, esp); |
527 __ push(esi); // Callee's context. | 529 __ push(esi); // Callee's context. |
528 __ push(edi); // Callee's JS function. | 530 __ push(edi); // Callee's JS function. |
529 __ push(edx); // Callee's new target. | 531 __ push(edx); // Callee's new target. |
530 | 532 |
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577 __ jmp(&loop_check); | 579 __ jmp(&loop_check); |
578 __ bind(&loop_header); | 580 __ bind(&loop_header); |
579 // TODO(rmcilroy): Consider doing more than one push per loop iteration. | 581 // TODO(rmcilroy): Consider doing more than one push per loop iteration. |
580 __ push(eax); | 582 __ push(eax); |
581 // Continue loop if not done. | 583 // Continue loop if not done. |
582 __ bind(&loop_check); | 584 __ bind(&loop_check); |
583 __ sub(ebx, Immediate(kPointerSize)); | 585 __ sub(ebx, Immediate(kPointerSize)); |
584 __ j(greater_equal, &loop_header); | 586 __ j(greater_equal, &loop_header); |
585 } | 587 } |
586 | 588 |
587 // TODO(rmcilroy): List of things not currently dealt with here but done in | |
588 // fullcodegen's prologue: | |
589 // - Call ProfileEntryHookStub when isolate has a function_entry_hook. | |
590 // - Code aging of the BytecodeArray object. | |
591 | |
592 // Load accumulator, register file, bytecode offset, dispatch table into | 589 // Load accumulator, register file, bytecode offset, dispatch table into |
593 // registers. | 590 // registers. |
594 __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); | 591 __ LoadRoot(kInterpreterAccumulatorRegister, Heap::kUndefinedValueRootIndex); |
595 __ mov(kInterpreterRegisterFileRegister, ebp); | 592 __ mov(kInterpreterRegisterFileRegister, ebp); |
596 __ add(kInterpreterRegisterFileRegister, | 593 __ add(kInterpreterRegisterFileRegister, |
597 Immediate(InterpreterFrameConstants::kRegisterFilePointerFromFp)); | 594 Immediate(InterpreterFrameConstants::kRegisterFilePointerFromFp)); |
598 __ mov(kInterpreterBytecodeOffsetRegister, | 595 __ mov(kInterpreterBytecodeOffsetRegister, |
599 Immediate(BytecodeArray::kHeaderSize - kHeapObjectTag)); | 596 Immediate(BytecodeArray::kHeaderSize - kHeapObjectTag)); |
600 __ mov(ebx, Immediate(ExternalReference::interpreter_dispatch_table_address( | 597 __ mov(ebx, Immediate(ExternalReference::interpreter_dispatch_table_address( |
601 masm->isolate()))); | 598 masm->isolate()))); |
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2870 // And "return" to the OSR entry point of the function. | 2867 // And "return" to the OSR entry point of the function. |
2871 __ ret(0); | 2868 __ ret(0); |
2872 } | 2869 } |
2873 | 2870 |
2874 | 2871 |
2875 #undef __ | 2872 #undef __ |
2876 } // namespace internal | 2873 } // namespace internal |
2877 } // namespace v8 | 2874 } // namespace v8 |
2878 | 2875 |
2879 #endif // V8_TARGET_ARCH_IA32 | 2876 #endif // V8_TARGET_ARCH_IA32 |
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