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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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64 const intptr_t kFailureTagMask = (1 << kFailureTagSize) - 1; | 64 const intptr_t kFailureTagMask = (1 << kFailureTagSize) - 1; |
65 | 65 |
66 | 66 |
67 // Zap-value: The value used for zapping dead objects. | 67 // Zap-value: The value used for zapping dead objects. |
68 // Should be a recognizable hex value tagged as a failure. | 68 // Should be a recognizable hex value tagged as a failure. |
69 #ifdef V8_HOST_ARCH_64_BIT | 69 #ifdef V8_HOST_ARCH_64_BIT |
70 const Address kZapValue = | 70 const Address kZapValue = |
71 reinterpret_cast<Address>(V8_UINT64_C(0xdeadbeedbeadbeef)); | 71 reinterpret_cast<Address>(V8_UINT64_C(0xdeadbeedbeadbeef)); |
72 const Address kHandleZapValue = | 72 const Address kHandleZapValue = |
73 reinterpret_cast<Address>(V8_UINT64_C(0x1baddead0baddeaf)); | 73 reinterpret_cast<Address>(V8_UINT64_C(0x1baddead0baddeaf)); |
| 74 const Address kGlobalHandleZapValue = |
| 75 reinterpret_cast<Address>(V8_UINT64_C(0x1baffed00baffedf)); |
74 const Address kFromSpaceZapValue = | 76 const Address kFromSpaceZapValue = |
75 reinterpret_cast<Address>(V8_UINT64_C(0x1beefdad0beefdaf)); | 77 reinterpret_cast<Address>(V8_UINT64_C(0x1beefdad0beefdaf)); |
76 const uint64_t kDebugZapValue = V8_UINT64_C(0xbadbaddbbadbaddb); | 78 const uint64_t kDebugZapValue = V8_UINT64_C(0xbadbaddbbadbaddb); |
77 const uint64_t kSlotsZapValue = V8_UINT64_C(0xbeefdeadbeefdeef); | 79 const uint64_t kSlotsZapValue = V8_UINT64_C(0xbeefdeadbeefdeef); |
78 const uint64_t kFreeListZapValue = 0xfeed1eaffeed1eaf; | 80 const uint64_t kFreeListZapValue = 0xfeed1eaffeed1eaf; |
79 #else | 81 #else |
80 const Address kZapValue = reinterpret_cast<Address>(0xdeadbeef); | 82 const Address kZapValue = reinterpret_cast<Address>(0xdeadbeef); |
81 const Address kHandleZapValue = reinterpret_cast<Address>(0xbaddeaf); | 83 const Address kHandleZapValue = reinterpret_cast<Address>(0xbaddeaf); |
| 84 const Address kGlobalHandleZapValue = reinterpret_cast<Address>(0xbaffedf); |
82 const Address kFromSpaceZapValue = reinterpret_cast<Address>(0xbeefdaf); | 85 const Address kFromSpaceZapValue = reinterpret_cast<Address>(0xbeefdaf); |
83 const uint32_t kSlotsZapValue = 0xbeefdeef; | 86 const uint32_t kSlotsZapValue = 0xbeefdeef; |
84 const uint32_t kDebugZapValue = 0xbadbaddb; | 87 const uint32_t kDebugZapValue = 0xbadbaddb; |
85 const uint32_t kFreeListZapValue = 0xfeed1eaf; | 88 const uint32_t kFreeListZapValue = 0xfeed1eaf; |
86 #endif | 89 #endif |
87 | 90 |
88 const int kCodeZapValue = 0xbadc0de; | 91 const int kCodeZapValue = 0xbadc0de; |
89 | 92 |
90 // Number of bits to represent the page size for paged spaces. The value of 20 | 93 // Number of bits to represent the page size for paged spaces. The value of 20 |
91 // gives 1Mb bytes per page. | 94 // gives 1Mb bytes per page. |
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566 | 569 |
567 enum ClearExceptionFlag { | 570 enum ClearExceptionFlag { |
568 KEEP_EXCEPTION, | 571 KEEP_EXCEPTION, |
569 CLEAR_EXCEPTION | 572 CLEAR_EXCEPTION |
570 }; | 573 }; |
571 | 574 |
572 | 575 |
573 } } // namespace v8::internal | 576 } } // namespace v8::internal |
574 | 577 |
575 #endif // V8_V8GLOBALS_H_ | 578 #endif // V8_V8GLOBALS_H_ |
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