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1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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140 const int kIntptrSize = sizeof(intptr_t); // NOLINT | 140 const int kIntptrSize = sizeof(intptr_t); // NOLINT |
141 | 141 |
142 #if V8_HOST_ARCH_64_BIT | 142 #if V8_HOST_ARCH_64_BIT |
143 const int kPointerSizeLog2 = 3; | 143 const int kPointerSizeLog2 = 3; |
144 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000); | 144 const intptr_t kIntptrSignBit = V8_INT64_C(0x8000000000000000); |
145 #else | 145 #else |
146 const int kPointerSizeLog2 = 2; | 146 const int kPointerSizeLog2 = 2; |
147 const intptr_t kIntptrSignBit = 0x80000000; | 147 const intptr_t kIntptrSignBit = 0x80000000; |
148 #endif | 148 #endif |
149 | 149 |
150 // Mask for the sign bit in a smi. | |
151 const intptr_t kSmiSignMask = kIntptrSignBit; | |
152 | |
153 const int kObjectAlignmentBits = kPointerSizeLog2; | 150 const int kObjectAlignmentBits = kPointerSizeLog2; |
154 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; | 151 const intptr_t kObjectAlignment = 1 << kObjectAlignmentBits; |
155 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; | 152 const intptr_t kObjectAlignmentMask = kObjectAlignment - 1; |
156 | 153 |
157 // Desired alignment for pointers. | 154 // Desired alignment for pointers. |
158 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); | 155 const intptr_t kPointerAlignment = (1 << kPointerSizeLog2); |
159 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; | 156 const intptr_t kPointerAlignmentMask = kPointerAlignment - 1; |
160 | 157 |
161 // Desired alignment for maps. | 158 // Desired alignment for maps. |
162 #if V8_HOST_ARCH_64_BIT | 159 #if V8_HOST_ARCH_64_BIT |
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606 CMOV = 15, // x86 | 603 CMOV = 15, // x86 |
607 RDTSC = 4, // x86 | 604 RDTSC = 4, // x86 |
608 CPUID = 10, // x86 | 605 CPUID = 10, // x86 |
609 VFP3 = 1, // ARM | 606 VFP3 = 1, // ARM |
610 ARMv7 = 2, // ARM | 607 ARMv7 = 2, // ARM |
611 SAHF = 0}; // x86 | 608 SAHF = 0}; // x86 |
612 | 609 |
613 } } // namespace v8::internal | 610 } } // namespace v8::internal |
614 | 611 |
615 #endif // V8_GLOBALS_H_ | 612 #endif // V8_GLOBALS_H_ |
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