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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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| 975 PositionsRecorder* positions_recorder_; | 975 PositionsRecorder* positions_recorder_; |
| 976 const PositionState saved_state_; | 976 const PositionState saved_state_; |
| 977 | 977 |
| 978 DISALLOW_COPY_AND_ASSIGN(PreservePositionScope); | 978 DISALLOW_COPY_AND_ASSIGN(PreservePositionScope); |
| 979 }; | 979 }; |
| 980 | 980 |
| 981 | 981 |
| 982 // ----------------------------------------------------------------------------- | 982 // ----------------------------------------------------------------------------- |
| 983 // Utility functions | 983 // Utility functions |
| 984 | 984 |
| 985 inline bool is_intn(int x, int n) { | |
| 986 return -(1 << (n-1)) <= x && x < (1 << (n-1)); | |
| 987 } | |
| 988 | |
| 989 inline bool is_int8(int x) { return is_intn(x, 8); } | |
| 990 inline bool is_int16(int x) { return is_intn(x, 16); } | |
| 991 inline bool is_int18(int x) { return is_intn(x, 18); } | |
| 992 inline bool is_int24(int x) { return is_intn(x, 24); } | |
| 993 | |
| 994 inline bool is_uintn(int x, int n) { | |
| 995 return (x & -(1 << n)) == 0; | |
| 996 } | |
| 997 | |
| 998 inline bool is_uint2(int x) { return is_uintn(x, 2); } | |
| 999 inline bool is_uint3(int x) { return is_uintn(x, 3); } | |
| 1000 inline bool is_uint4(int x) { return is_uintn(x, 4); } | |
| 1001 inline bool is_uint5(int x) { return is_uintn(x, 5); } | |
| 1002 inline bool is_uint6(int x) { return is_uintn(x, 6); } | |
| 1003 inline bool is_uint8(int x) { return is_uintn(x, 8); } | |
| 1004 inline bool is_uint10(int x) { return is_uintn(x, 10); } | |
| 1005 inline bool is_uint12(int x) { return is_uintn(x, 12); } | |
| 1006 inline bool is_uint16(int x) { return is_uintn(x, 16); } | |
| 1007 inline bool is_uint24(int x) { return is_uintn(x, 24); } | |
| 1008 inline bool is_uint26(int x) { return is_uintn(x, 26); } | |
| 1009 inline bool is_uint28(int x) { return is_uintn(x, 28); } | |
| 1010 | |
| 1011 inline int NumberOfBitsSet(uint32_t x) { | 985 inline int NumberOfBitsSet(uint32_t x) { |
| 1012 unsigned int num_bits_set; | 986 unsigned int num_bits_set; |
| 1013 for (num_bits_set = 0; x; x >>= 1) { | 987 for (num_bits_set = 0; x; x >>= 1) { |
| 1014 num_bits_set += x & 1; | 988 num_bits_set += x & 1; |
| 1015 } | 989 } |
| 1016 return num_bits_set; | 990 return num_bits_set; |
| 1017 } | 991 } |
| 1018 | 992 |
| 1019 bool EvalComparison(Token::Value op, double op1, double op2); | 993 bool EvalComparison(Token::Value op, double op1, double op2); |
| 1020 | 994 |
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| 1041 public: | 1015 public: |
| 1042 NullCallWrapper() { } | 1016 NullCallWrapper() { } |
| 1043 virtual ~NullCallWrapper() { } | 1017 virtual ~NullCallWrapper() { } |
| 1044 virtual void BeforeCall(int call_size) const { } | 1018 virtual void BeforeCall(int call_size) const { } |
| 1045 virtual void AfterCall() const { } | 1019 virtual void AfterCall() const { } |
| 1046 }; | 1020 }; |
| 1047 | 1021 |
| 1048 } } // namespace v8::internal | 1022 } } // namespace v8::internal |
| 1049 | 1023 |
| 1050 #endif // V8_ASSEMBLER_H_ | 1024 #endif // V8_ASSEMBLER_H_ |
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