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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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43 namespace internal { | 43 namespace internal { |
44 | 44 |
45 | 45 |
46 // ----------------------------------------------------------------------------- | 46 // ----------------------------------------------------------------------------- |
47 // Common double constants. | 47 // Common double constants. |
48 | 48 |
49 class DoubleConstant: public AllStatic { | 49 class DoubleConstant: public AllStatic { |
50 public: | 50 public: |
51 static const double min_int; | 51 static const double min_int; |
52 static const double one_half; | 52 static const double one_half; |
53 static const double negative_infinity; | |
54 }; | 53 }; |
55 | 54 |
56 | 55 |
57 // ----------------------------------------------------------------------------- | 56 // ----------------------------------------------------------------------------- |
58 // Labels represent pc locations; they are typically jump or call targets. | 57 // Labels represent pc locations; they are typically jump or call targets. |
59 // After declaration, a label can be freely used to denote known or (yet) | 58 // After declaration, a label can be freely used to denote known or (yet) |
60 // unknown pc location. Assembler::bind() is used to bind a label to the | 59 // unknown pc location. Assembler::bind() is used to bind a label to the |
61 // current pc. A label can be bound only once. | 60 // current pc. A label can be bound only once. |
62 | 61 |
63 class Label BASE_EMBEDDED { | 62 class Label BASE_EMBEDDED { |
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533 static ExternalReference new_space_start(); | 532 static ExternalReference new_space_start(); |
534 static ExternalReference new_space_mask(); | 533 static ExternalReference new_space_mask(); |
535 static ExternalReference heap_always_allocate_scope_depth(); | 534 static ExternalReference heap_always_allocate_scope_depth(); |
536 | 535 |
537 // Used for fast allocation in generated code. | 536 // Used for fast allocation in generated code. |
538 static ExternalReference new_space_allocation_top_address(); | 537 static ExternalReference new_space_allocation_top_address(); |
539 static ExternalReference new_space_allocation_limit_address(); | 538 static ExternalReference new_space_allocation_limit_address(); |
540 | 539 |
541 static ExternalReference double_fp_operation(Token::Value operation); | 540 static ExternalReference double_fp_operation(Token::Value operation); |
542 static ExternalReference compare_doubles(); | 541 static ExternalReference compare_doubles(); |
543 static ExternalReference power_double_double_function(); | |
544 static ExternalReference power_double_int_function(); | |
545 | 542 |
546 static ExternalReference handle_scope_next_address(); | 543 static ExternalReference handle_scope_next_address(); |
547 static ExternalReference handle_scope_limit_address(); | 544 static ExternalReference handle_scope_limit_address(); |
548 static ExternalReference handle_scope_level_address(); | 545 static ExternalReference handle_scope_level_address(); |
549 | 546 |
550 static ExternalReference scheduled_exception_address(); | 547 static ExternalReference scheduled_exception_address(); |
551 | 548 |
552 // Static variables containing common double constants. | 549 // Static variables containing common double constants. |
553 static ExternalReference address_of_min_int(); | 550 static ExternalReference address_of_min_int(); |
554 static ExternalReference address_of_one_half(); | 551 static ExternalReference address_of_one_half(); |
555 static ExternalReference address_of_negative_infinity(); | |
556 | 552 |
557 Address address() const {return reinterpret_cast<Address>(address_);} | 553 Address address() const {return reinterpret_cast<Address>(address_);} |
558 | 554 |
559 #ifdef ENABLE_DEBUGGER_SUPPORT | 555 #ifdef ENABLE_DEBUGGER_SUPPORT |
560 // Function Debug::Break() | 556 // Function Debug::Break() |
561 static ExternalReference debug_break(); | 557 static ExternalReference debug_break(); |
562 | 558 |
563 // Used to check if single stepping is enabled in generated code. | 559 // Used to check if single stepping is enabled in generated code. |
564 static ExternalReference debug_step_in_fp_address(); | 560 static ExternalReference debug_step_in_fp_address(); |
565 #endif | 561 #endif |
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707 static inline bool is_uint28(int x) { return is_uintn(x, 28); } | 703 static inline bool is_uint28(int x) { return is_uintn(x, 28); } |
708 | 704 |
709 static inline int NumberOfBitsSet(uint32_t x) { | 705 static inline int NumberOfBitsSet(uint32_t x) { |
710 unsigned int num_bits_set; | 706 unsigned int num_bits_set; |
711 for (num_bits_set = 0; x; x >>= 1) { | 707 for (num_bits_set = 0; x; x >>= 1) { |
712 num_bits_set += x & 1; | 708 num_bits_set += x & 1; |
713 } | 709 } |
714 return num_bits_set; | 710 return num_bits_set; |
715 } | 711 } |
716 | 712 |
717 // Computes pow(x, y) with the special cases in the spec for Math.pow. | |
718 double power_double_int(double x, int y); | |
719 double power_double_double(double x, double y); | |
720 | |
721 } } // namespace v8::internal | 713 } } // namespace v8::internal |
722 | 714 |
723 #endif // V8_ASSEMBLER_H_ | 715 #endif // V8_ASSEMBLER_H_ |
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