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Issue 661171: Merge r3962 to trunk (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 10 years, 9 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 MacroAssembler* masm() { return cgen()->masm(); } 82 MacroAssembler* masm() { return cgen()->masm(); }
83 83
84 // Create a duplicate of an existing valid frame element. 84 // Create a duplicate of an existing valid frame element.
85 FrameElement CopyElementAt(int index, 85 FrameElement CopyElementAt(int index,
86 NumberInfo::Type info = NumberInfo::kUninitialized); 86 NumberInfo::Type info = NumberInfo::kUninitialized);
87 87
88 // The number of elements on the virtual frame. 88 // The number of elements on the virtual frame.
89 int element_count() { return elements_.length(); } 89 int element_count() { return elements_.length(); }
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388 NumberInfo::Type info = NumberInfo::kUnknown); 388 NumberInfo::Type info = NumberInfo::kUnknown);
389 void EmitPush(Heap::RootListIndex index, 389 void EmitPush(Heap::RootListIndex index,
390 NumberInfo::Type info = NumberInfo::kUnknown); 390 NumberInfo::Type info = NumberInfo::kUnknown);
391 void EmitPush(Immediate immediate, 391 void EmitPush(Immediate immediate,
392 NumberInfo::Type info = NumberInfo::kUnknown); 392 NumberInfo::Type info = NumberInfo::kUnknown);
393 void EmitPush(Smi* value); 393 void EmitPush(Smi* value);
394 // Uses kScratchRegister, emits appropriate relocation info. 394 // Uses kScratchRegister, emits appropriate relocation info.
395 void EmitPush(Handle<Object> value); 395 void EmitPush(Handle<Object> value);
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) { Push(Handle<Object>(value)); } 400 inline void Push(Smi* value);
401 401
402 // Pushing a result invalidates it (its contents become owned by the 402 // Pushing a result invalidates it (its contents become owned by the
403 // frame). 403 // frame).
404 void Push(Result* result) { 404 void Push(Result* result) {
405 if (result->is_register()) { 405 if (result->is_register()) {
406 Push(result->reg(), result->number_info()); 406 Push(result->reg(), result->number_info());
407 } else { 407 } else {
408 ASSERT(result->is_constant()); 408 ASSERT(result->is_constant());
409 Push(result->handle()); 409 Push(result->handle());
410 } 410 }
411 result->Unuse(); 411 result->Unuse();
412 } 412 }
413 413
414 // Nip removes zero or more elements from immediately below the top 414 // Nip removes zero or more elements from immediately below the top
415 // of the frame, leaving the previous top-of-frame value on top of 415 // of the frame, leaving the previous top-of-frame value on top of
416 // the frame. Nip(k) is equivalent to x = Pop(), Drop(k), Push(x). 416 // the frame. Nip(k) is equivalent to x = Pop(), Drop(k), Push(x).
417 void Nip(int num_dropped); 417 inline void Nip(int num_dropped);
418 418
419 private: 419 private:
420 static const int kLocal0Offset = JavaScriptFrameConstants::kLocal0Offset; 420 static const int kLocal0Offset = JavaScriptFrameConstants::kLocal0Offset;
421 static const int kFunctionOffset = JavaScriptFrameConstants::kFunctionOffset; 421 static const int kFunctionOffset = JavaScriptFrameConstants::kFunctionOffset;
422 static const int kContextOffset = StandardFrameConstants::kContextOffset; 422 static const int kContextOffset = StandardFrameConstants::kContextOffset;
423 423
424 static const int kHandlerSize = StackHandlerConstants::kSize / kPointerSize; 424 static const int kHandlerSize = StackHandlerConstants::kSize / kPointerSize;
425 static const int kPreallocatedElements = 5 + 8; // 8 expression stack slots. 425 static const int kPreallocatedElements = 5 + 8; // 8 expression stack slots.
426 426
427 ZoneList<FrameElement> elements_; 427 ZoneList<FrameElement> elements_;
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499 void SyncElementAt(int index); 499 void SyncElementAt(int index);
500 500
501 // Sync a single unsynced element that lies beneath or at the stack pointer. 501 // Sync a single unsynced element that lies beneath or at the stack pointer.
502 void SyncElementBelowStackPointer(int index); 502 void SyncElementBelowStackPointer(int index);
503 503
504 // Sync a single unsynced element that lies just above the stack pointer. 504 // Sync a single unsynced element that lies just above the stack pointer.
505 void SyncElementByPushing(int index); 505 void SyncElementByPushing(int index);
506 506
507 // Push a copy of a frame slot (typically a local or parameter) on top of 507 // Push a copy of a frame slot (typically a local or parameter) on top of
508 // the frame. 508 // the frame.
509 void PushFrameSlotAt(int index); 509 inline void PushFrameSlotAt(int index);
510 510
511 // Push a the value of a frame slot (typically a local or parameter) on 511 // Push a the value of a frame slot (typically a local or parameter) on
512 // top of the frame and invalidate the slot. 512 // top of the frame and invalidate the slot.
513 void TakeFrameSlotAt(int index); 513 void TakeFrameSlotAt(int index);
514 514
515 // Store the value on top of the frame to a frame slot (typically a local 515 // Store the value on top of the frame to a frame slot (typically a local
516 // or parameter). 516 // or parameter).
517 void StoreToFrameSlotAt(int index); 517 void StoreToFrameSlotAt(int index);
518 518
519 // Spill all elements in registers. Spill the top spilled_args elements 519 // Spill all elements in registers. Spill the top spilled_args elements
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550 int InvalidateFrameSlotAt(int index); 550 int InvalidateFrameSlotAt(int index);
551 551
552 // Call a code stub that has already been prepared for calling (via 552 // Call a code stub that has already been prepared for calling (via
553 // PrepareForCall). 553 // PrepareForCall).
554 Result RawCallStub(CodeStub* stub); 554 Result RawCallStub(CodeStub* stub);
555 555
556 // Calls a code object which has already been prepared for calling 556 // Calls a code object which has already been prepared for calling
557 // (via PrepareForCall). 557 // (via PrepareForCall).
558 Result RawCallCodeObject(Handle<Code> code, RelocInfo::Mode rmode); 558 Result RawCallCodeObject(Handle<Code> code, RelocInfo::Mode rmode);
559 559
560 bool Equals(VirtualFrame* other); 560 inline bool Equals(VirtualFrame* other);
561 561
562 // Classes that need raw access to the elements_ array. 562 // Classes that need raw access to the elements_ array.
563 friend class DeferredCode; 563 friend class DeferredCode;
564 friend class JumpTarget; 564 friend class JumpTarget;
565 }; 565 };
566 566
567 567
568 } } // namespace v8::internal 568 } } // namespace v8::internal
569 569
570 #endif // V8_X64_VIRTUAL_FRAME_X64_H_ 570 #endif // V8_X64_VIRTUAL_FRAME_X64_H_
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