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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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174 static CodeGenerator* Current() { | 174 static CodeGenerator* Current() { |
175 ASSERT(top_ != NULL); | 175 ASSERT(top_ != NULL); |
176 return top_; | 176 return top_; |
177 } | 177 } |
178 | 178 |
179 private: | 179 private: |
180 static CodeGenerator* top_; | 180 static CodeGenerator* top_; |
181 CodeGenerator* previous_; | 181 CodeGenerator* previous_; |
182 }; | 182 }; |
183 | 183 |
| 184 |
184 #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X64 | 185 #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X64 |
185 | 186 |
186 // State of used registers in a virtual frame. | 187 // State of used registers in a virtual frame. |
187 class FrameRegisterState { | 188 class FrameRegisterState { |
188 public: | 189 public: |
189 // Captures the current state of the given frame. | 190 // Captures the current state of the given frame. |
190 explicit FrameRegisterState(VirtualFrame* frame); | 191 explicit FrameRegisterState(VirtualFrame* frame); |
191 | 192 |
192 // Saves the state in the stack. | 193 // Saves the state in the stack. |
193 void Save(MacroAssembler* masm) const; | 194 void Save(MacroAssembler* masm) const; |
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388 int slots_; | 389 int slots_; |
389 | 390 |
390 const char* GetName() { return "FastNewContextStub"; } | 391 const char* GetName() { return "FastNewContextStub"; } |
391 Major MajorKey() { return FastNewContext; } | 392 Major MajorKey() { return FastNewContext; } |
392 int MinorKey() { return slots_; } | 393 int MinorKey() { return slots_; } |
393 }; | 394 }; |
394 | 395 |
395 | 396 |
396 class FastCloneShallowArrayStub : public CodeStub { | 397 class FastCloneShallowArrayStub : public CodeStub { |
397 public: | 398 public: |
398 static const int kMaximumLength = 8; | 399 // Maximum length of copied elements array. |
| 400 static const int kMaximumClonedLength = 8; |
399 | 401 |
400 explicit FastCloneShallowArrayStub(int length) : length_(length) { | 402 enum Mode { |
401 ASSERT(length >= 0 && length <= kMaximumLength); | 403 CLONE_ELEMENTS, |
| 404 COPY_ON_WRITE_ELEMENTS |
| 405 }; |
| 406 |
| 407 FastCloneShallowArrayStub(Mode mode, int length) |
| 408 : mode_(mode), |
| 409 length_((mode == COPY_ON_WRITE_ELEMENTS) ? 0 : length) { |
| 410 ASSERT(length_ >= 0); |
| 411 ASSERT(length_ <= kMaximumClonedLength); |
402 } | 412 } |
403 | 413 |
404 void Generate(MacroAssembler* masm); | 414 void Generate(MacroAssembler* masm); |
405 | 415 |
406 private: | 416 private: |
| 417 Mode mode_; |
407 int length_; | 418 int length_; |
408 | 419 |
409 const char* GetName() { return "FastCloneShallowArrayStub"; } | 420 const char* GetName() { return "FastCloneShallowArrayStub"; } |
410 Major MajorKey() { return FastCloneShallowArray; } | 421 Major MajorKey() { return FastCloneShallowArray; } |
411 int MinorKey() { return length_; } | 422 int MinorKey() { |
| 423 ASSERT(mode_ == 0 || mode_ == 1); |
| 424 return (length_ << 1) | mode_; |
| 425 } |
412 }; | 426 }; |
413 | 427 |
414 | 428 |
415 class InstanceofStub: public CodeStub { | 429 class InstanceofStub: public CodeStub { |
416 public: | 430 public: |
417 InstanceofStub() { } | 431 InstanceofStub() { } |
418 | 432 |
419 void Generate(MacroAssembler* masm); | 433 void Generate(MacroAssembler* masm); |
420 | 434 |
421 private: | 435 private: |
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897 StringCharFromCodeGenerator char_from_code_generator_; | 911 StringCharFromCodeGenerator char_from_code_generator_; |
898 | 912 |
899 DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator); | 913 DISALLOW_COPY_AND_ASSIGN(StringCharAtGenerator); |
900 }; | 914 }; |
901 | 915 |
902 | 916 |
903 } // namespace internal | 917 } // namespace internal |
904 } // namespace v8 | 918 } // namespace v8 |
905 | 919 |
906 #endif // V8_CODEGEN_H_ | 920 #endif // V8_CODEGEN_H_ |
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