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Side by Side Diff: src/ia32/virtual-frame-ia32.h

Issue 661171: Merge r3962 to trunk (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 10 years, 10 months ago
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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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574 int InvalidateFrameSlotAt(int index); 572 int InvalidateFrameSlotAt(int index);
575 573
576 // Call a code stub that has already been prepared for calling (via 574 // Call a code stub that has already been prepared for calling (via
577 // PrepareForCall). 575 // PrepareForCall).
578 Result RawCallStub(CodeStub* stub); 576 Result RawCallStub(CodeStub* stub);
579 577
580 // Calls a code object which has already been prepared for calling 578 // Calls a code object which has already been prepared for calling
581 // (via PrepareForCall). 579 // (via PrepareForCall).
582 Result RawCallCodeObject(Handle<Code> code, RelocInfo::Mode rmode); 580 Result RawCallCodeObject(Handle<Code> code, RelocInfo::Mode rmode);
583 581
584 bool Equals(VirtualFrame* other); 582 inline bool Equals(VirtualFrame* other);
585 583
586 // Classes that need raw access to the elements_ array. 584 // Classes that need raw access to the elements_ array.
587 friend class DeferredCode; 585 friend class DeferredCode;
588 friend class JumpTarget; 586 friend class JumpTarget;
589 }; 587 };
590 588
591 } } // namespace v8::internal 589 } } // namespace v8::internal
592 590
593 #endif // V8_IA32_VIRTUAL_FRAME_IA32_H_ 591 #endif // V8_IA32_VIRTUAL_FRAME_IA32_H_
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