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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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41 const intptr_t kSmiSignMask = kIntptrSignBit; | 41 const intptr_t kSmiSignMask = kIntptrSignBit; |
42 | 42 |
43 const int kObjectAlignmentBits = kPointerSizeLog2; | 43 const int kObjectAlignmentBits = kPointerSizeLog2; |
44 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; | 44 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; |
45 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; | 45 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; |
46 | 46 |
47 // Desired alignment for pointers. | 47 // Desired alignment for pointers. |
48 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); | 48 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); |
49 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; | 49 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; |
50 | 50 |
51 #if V8_HOST_ARCH_64_BIT | |
Erik Corry
2012/04/16 14:35:19
Instead of the ifdef you could just set kDoubleAli
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52 const intptr_t kDoubleAlignment = kPointerAlignment; | |
53 #else | |
54 const intptr_t kDoubleAlignment = 2 * kPointerAlignment; | |
55 #endif | |
56 const intptr_t kDoubleAlignmentMask = kDoubleAlignment - 1; | |
57 | |
51 // Desired alignment for maps. | 58 // Desired alignment for maps. |
52 #if V8_HOST_ARCH_64_BIT | 59 #if V8_HOST_ARCH_64_BIT |
53 const intptr_t kMapAlignmentBits = kObjectAlignmentBits; | 60 const intptr_t kMapAlignmentBits = kObjectAlignmentBits; |
54 #else | 61 #else |
55 const intptr_t kMapAlignmentBits = kObjectAlignmentBits + 3; | 62 const intptr_t kMapAlignmentBits = kObjectAlignmentBits + 3; |
56 #endif | 63 #endif |
57 const intptr_t kMapAlignment = (1 << kMapAlignmentBits); | 64 const intptr_t kMapAlignment = (1 << kMapAlignmentBits); |
58 const intptr_t kMapAlignmentMask = kMapAlignment - 1; | 65 const intptr_t kMapAlignmentMask = kMapAlignment - 1; |
59 | 66 |
60 // Desired alignment for generated code is 32 bytes (to improve cache line | 67 // Desired alignment for generated code is 32 bytes (to improve cache line |
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549 | 556 |
550 enum ClearExceptionFlag { | 557 enum ClearExceptionFlag { |
551 KEEP_EXCEPTION, | 558 KEEP_EXCEPTION, |
552 CLEAR_EXCEPTION | 559 CLEAR_EXCEPTION |
553 }; | 560 }; |
554 | 561 |
555 | 562 |
556 } } // namespace v8::internal | 563 } } // namespace v8::internal |
557 | 564 |
558 #endif // V8_V8GLOBALS_H_ | 565 #endif // V8_V8GLOBALS_H_ |
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