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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #ifndef VM_GLOBALS_H_ | 5 #ifndef VM_GLOBALS_H_ |
6 #define VM_GLOBALS_H_ | 6 #define VM_GLOBALS_H_ |
7 | 7 |
8 // This file contains global definitions for the VM library only. Anything that | 8 // This file contains global definitions for the VM library only. Anything that |
9 // is more globally useful should be added to 'vm/globals.h'. | 9 // is more globally useful should be added to 'vm/globals.h'. |
10 | 10 |
11 #include "platform/globals.h" | 11 #include "platform/globals.h" |
12 | 12 |
13 #if defined(_WIN32) | 13 #if defined(_WIN32) |
14 // Undef conflicting defines. | 14 // Undef conflicting defines. |
15 #undef PARITY_EVEN | 15 #undef PARITY_EVEN |
16 #undef PARITY_ODD | 16 #undef PARITY_ODD |
17 #undef near | 17 #undef near |
18 #endif | 18 #endif |
19 | 19 |
20 // The following #defines are invalidated. | 20 // The following #defines are invalidated. |
21 #undef OVERFLOW // From math.h conflicts in constants_ia32.h | 21 #undef OVERFLOW // From math.h conflicts in constants_ia32.h |
22 | 22 |
23 namespace dart { | 23 namespace dart { |
24 // Smi value range is from -(2^N) to (2^N)-1. | 24 // Smi value range is from -(2^N) to (2^N)-1. |
25 // N=30 (32-bit build) or N=62 (64-bit build). | 25 // N=30 (32-bit build) or N=62 (64-bit build). |
26 const intptr_t kSmiBits = kBitsPerWord - 2; | 26 const intptr_t kSmiBits = kBitsPerWord - 2; |
27 const intptr_t kSmiMax = (static_cast<intptr_t>(1) << kSmiBits) - 1; | 27 const intptr_t kSmiMax = (static_cast<intptr_t>(1) << kSmiBits) - 1; |
28 const intptr_t kSmiMin = -(static_cast<intptr_t>(1) << kSmiBits); | 28 const intptr_t kSmiMin = -(static_cast<intptr_t>(1) << kSmiBits); |
29 | 29 |
| 30 // Hard coded from above but for 32-bit architectures. |
| 31 const intptr_t kSmiBits32 = kBitsPerInt32 - 2; |
| 32 const intptr_t kSmiMax32 = (static_cast<intptr_t>(1) << kSmiBits32) - 1; |
| 33 const intptr_t kSmiMin32 = -(static_cast<intptr_t>(1) << kSmiBits32); |
| 34 |
30 #define kPosInfinity bit_cast<double>(DART_UINT64_C(0x7ff0000000000000)) | 35 #define kPosInfinity bit_cast<double>(DART_UINT64_C(0x7ff0000000000000)) |
31 #define kNegInfinity bit_cast<double>(DART_UINT64_C(0xfff0000000000000)) | 36 #define kNegInfinity bit_cast<double>(DART_UINT64_C(0xfff0000000000000)) |
32 | 37 |
33 // The expression ARRAY_SIZE(array) is a compile-time constant of type | 38 // The expression ARRAY_SIZE(array) is a compile-time constant of type |
34 // size_t which represents the number of elements of the given | 39 // size_t which represents the number of elements of the given |
35 // array. You should only use ARRAY_SIZE on statically allocated | 40 // array. You should only use ARRAY_SIZE on statically allocated |
36 // arrays. | 41 // arrays. |
37 #define ARRAY_SIZE(array) \ | 42 #define ARRAY_SIZE(array) \ |
38 ((sizeof(array) / sizeof(*(array))) / \ | 43 ((sizeof(array) / sizeof(*(array))) / \ |
39 static_cast<intptr_t>(!(sizeof(array) % sizeof(*(array))))) | 44 static_cast<intptr_t>(!(sizeof(array) % sizeof(*(array))))) |
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121 #else | 126 #else |
122 #error Unknown host architecture. | 127 #error Unknown host architecture. |
123 #endif | 128 #endif |
124 | 129 |
125 | 130 |
126 #endif // !defined(TARGET_OS_WINDOWS)) | 131 #endif // !defined(TARGET_OS_WINDOWS)) |
127 | 132 |
128 } // namespace dart | 133 } // namespace dart |
129 | 134 |
130 #endif // VM_GLOBALS_H_ | 135 #endif // VM_GLOBALS_H_ |
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