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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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69 CodeGenerator* cgen() {return CodeGeneratorScope::Current();} | 69 CodeGenerator* cgen() {return CodeGeneratorScope::Current();} |
70 }; | 70 }; |
71 | 71 |
72 // An illegal index into the virtual frame. | 72 // An illegal index into the virtual frame. |
73 static const int kIllegalIndex = -1; | 73 static const int kIllegalIndex = -1; |
74 | 74 |
75 // Construct an initial virtual frame on entry to a JS function. | 75 // Construct an initial virtual frame on entry to a JS function. |
76 VirtualFrame(); | 76 VirtualFrame(); |
77 | 77 |
78 // Construct a virtual frame as a clone of an existing one. | 78 // Construct a virtual frame as a clone of an existing one. |
79 explicit VirtualFrame(VirtualFrame* original); | 79 explicit inline VirtualFrame(VirtualFrame* original); |
80 | 80 |
81 CodeGenerator* cgen() { return CodeGeneratorScope::Current(); } | 81 CodeGenerator* cgen() { return CodeGeneratorScope::Current(); } |
82 | 82 |
83 MacroAssembler* masm() { return cgen()->masm(); } | 83 MacroAssembler* masm() { return cgen()->masm(); } |
84 | 84 |
85 // Create a duplicate of an existing valid frame element. | 85 // Create a duplicate of an existing valid frame element. |
86 FrameElement CopyElementAt(int index, | 86 FrameElement CopyElementAt(int index, |
87 NumberInfo::Type info = NumberInfo::kUninitialized); | 87 NumberInfo::Type info = NumberInfo::kUninitialized); |
88 | 88 |
89 // The number of elements on the virtual frame. | 89 // The number of elements on the virtual frame. |
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388 // Push an element on top of the expression stack and emit a | 388 // Push an element on top of the expression stack and emit a |
389 // corresponding push instruction. | 389 // corresponding push instruction. |
390 void EmitPush(Register reg, | 390 void EmitPush(Register reg, |
391 NumberInfo::Type info = NumberInfo::kUnknown); | 391 NumberInfo::Type info = NumberInfo::kUnknown); |
392 void EmitPush(Operand operand, | 392 void EmitPush(Operand operand, |
393 NumberInfo::Type info = NumberInfo::kUnknown); | 393 NumberInfo::Type info = NumberInfo::kUnknown); |
394 void EmitPush(Immediate immediate, | 394 void EmitPush(Immediate immediate, |
395 NumberInfo::Type info = NumberInfo::kUnknown); | 395 NumberInfo::Type info = NumberInfo::kUnknown); |
396 | 396 |
397 // Push an element on the virtual frame. | 397 // Push an element on the virtual frame. |
398 void Push(Register reg, NumberInfo::Type info = NumberInfo::kUnknown); | 398 inline void Push(Register reg, NumberInfo::Type info = NumberInfo::kUnknown); |
399 void Push(Handle<Object> value); | 399 inline void Push(Handle<Object> value); |
400 void Push(Smi* value) { | 400 inline void Push(Smi* value); |
401 Push(Handle<Object> (value)); | |
402 } | |
403 | 401 |
404 // Pushing a result invalidates it (its contents become owned by the | 402 // Pushing a result invalidates it (its contents become owned by the |
405 // frame). | 403 // frame). |
406 void Push(Result* result) { | 404 void Push(Result* result) { |
407 // This assert will trigger if you try to push the same value twice. | 405 // This assert will trigger if you try to push the same value twice. |
408 ASSERT(result->is_valid()); | 406 ASSERT(result->is_valid()); |
409 if (result->is_register()) { | 407 if (result->is_register()) { |
410 Push(result->reg(), result->number_info()); | 408 Push(result->reg(), result->number_info()); |
411 } else { | 409 } else { |
412 ASSERT(result->is_constant()); | 410 ASSERT(result->is_constant()); |
413 Push(result->handle()); | 411 Push(result->handle()); |
414 } | 412 } |
415 result->Unuse(); | 413 result->Unuse(); |
416 } | 414 } |
417 | 415 |
418 // Pushing an expression expects that the expression is trivial (according | 416 // Pushing an expression expects that the expression is trivial (according |
419 // to Expression::IsTrivial). | 417 // to Expression::IsTrivial). |
420 void Push(Expression* expr); | 418 void Push(Expression* expr); |
421 | 419 |
422 // Nip removes zero or more elements from immediately below the top | 420 // Nip removes zero or more elements from immediately below the top |
423 // of the frame, leaving the previous top-of-frame value on top of | 421 // of the frame, leaving the previous top-of-frame value on top of |
424 // the frame. Nip(k) is equivalent to x = Pop(), Drop(k), Push(x). | 422 // the frame. Nip(k) is equivalent to x = Pop(), Drop(k), Push(x). |
425 void Nip(int num_dropped); | 423 inline void Nip(int num_dropped); |
426 | 424 |
427 private: | 425 private: |
428 static const int kLocal0Offset = JavaScriptFrameConstants::kLocal0Offset; | 426 static const int kLocal0Offset = JavaScriptFrameConstants::kLocal0Offset; |
429 static const int kFunctionOffset = JavaScriptFrameConstants::kFunctionOffset; | 427 static const int kFunctionOffset = JavaScriptFrameConstants::kFunctionOffset; |
430 static const int kContextOffset = StandardFrameConstants::kContextOffset; | 428 static const int kContextOffset = StandardFrameConstants::kContextOffset; |
431 | 429 |
432 static const int kHandlerSize = StackHandlerConstants::kSize / kPointerSize; | 430 static const int kHandlerSize = StackHandlerConstants::kSize / kPointerSize; |
433 static const int kPreallocatedElements = 5 + 8; // 8 expression stack slots. | 431 static const int kPreallocatedElements = 5 + 8; // 8 expression stack slots. |
434 | 432 |
435 ZoneList<FrameElement> elements_; | 433 ZoneList<FrameElement> elements_; |
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523 void SyncElementAt(int index); | 521 void SyncElementAt(int index); |
524 | 522 |
525 // Sync a single unsynced element that lies beneath or at the stack pointer. | 523 // Sync a single unsynced element that lies beneath or at the stack pointer. |
526 void SyncElementBelowStackPointer(int index); | 524 void SyncElementBelowStackPointer(int index); |
527 | 525 |
528 // Sync a single unsynced element that lies just above the stack pointer. | 526 // Sync a single unsynced element that lies just above the stack pointer. |
529 void SyncElementByPushing(int index); | 527 void SyncElementByPushing(int index); |
530 | 528 |
531 // Push a copy of a frame slot (typically a local or parameter) on top of | 529 // Push a copy of a frame slot (typically a local or parameter) on top of |
532 // the frame. | 530 // the frame. |
533 void PushFrameSlotAt(int index); | 531 inline void PushFrameSlotAt(int index); |
534 | 532 |
535 // Push a the value of a frame slot (typically a local or parameter) on | 533 // Push a the value of a frame slot (typically a local or parameter) on |
536 // top of the frame and invalidate the slot. | 534 // top of the frame and invalidate the slot. |
537 void TakeFrameSlotAt(int index); | 535 void TakeFrameSlotAt(int index); |
538 | 536 |
539 // Store the value on top of the frame to a frame slot (typically a local | 537 // Store the value on top of the frame to a frame slot (typically a local |
540 // or parameter). | 538 // or parameter). |
541 void StoreToFrameSlotAt(int index); | 539 void StoreToFrameSlotAt(int index); |
542 | 540 |
543 // Spill all elements in registers. Spill the top spilled_args elements | 541 // Spill all elements in registers. Spill the top spilled_args elements |
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582 Register b_reg); | 580 Register b_reg); |
583 | 581 |
584 // Call a code stub that has already been prepared for calling (via | 582 // Call a code stub that has already been prepared for calling (via |
585 // PrepareForCall). | 583 // PrepareForCall). |
586 Result RawCallStub(CodeStub* stub); | 584 Result RawCallStub(CodeStub* stub); |
587 | 585 |
588 // Calls a code object which has already been prepared for calling | 586 // Calls a code object which has already been prepared for calling |
589 // (via PrepareForCall). | 587 // (via PrepareForCall). |
590 Result RawCallCodeObject(Handle<Code> code, RelocInfo::Mode rmode); | 588 Result RawCallCodeObject(Handle<Code> code, RelocInfo::Mode rmode); |
591 | 589 |
592 bool Equals(VirtualFrame* other); | 590 inline bool Equals(VirtualFrame* other); |
593 | 591 |
594 // Classes that need raw access to the elements_ array. | 592 // Classes that need raw access to the elements_ array. |
595 friend class DeferredCode; | 593 friend class DeferredCode; |
596 friend class JumpTarget; | 594 friend class JumpTarget; |
597 }; | 595 }; |
598 | 596 |
599 } } // namespace v8::internal | 597 } } // namespace v8::internal |
600 | 598 |
601 #endif // V8_IA32_VIRTUAL_FRAME_IA32_H_ | 599 #endif // V8_IA32_VIRTUAL_FRAME_IA32_H_ |
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