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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 RUNTIME_VM_GLOBALS_H_ | 5 #ifndef RUNTIME_VM_GLOBALS_H_ |
6 #define RUNTIME_VM_GLOBALS_H_ | 6 #define RUNTIME_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 |
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72 return reinterpret_cast<type*>(result); \ | 72 return reinterpret_cast<type*>(result); \ |
73 } while (0) | 73 } while (0) |
74 | 74 |
75 | 75 |
76 // A type large enough to contain the value of the C++ vtable. This is needed | 76 // A type large enough to contain the value of the C++ vtable. This is needed |
77 // to support the handle operations. | 77 // to support the handle operations. |
78 typedef uword cpp_vtable; | 78 typedef uword cpp_vtable; |
79 | 79 |
80 | 80 |
81 // When using GCC we can use GCC attributes to ensure that certain | 81 // When using GCC we can use GCC attributes to ensure that certain |
82 // contants are 8 or 16 byte aligned. | 82 // constants are 8 or 16 byte aligned. |
83 #if defined(HOST_OS_WINDOWS) | 83 #if defined(HOST_OS_WINDOWS) |
84 #define ALIGN8 __declspec(align(8)) | 84 #define ALIGN8 __declspec(align(8)) |
85 #define ALIGN16 __declspec(align(16)) | 85 #define ALIGN16 __declspec(align(16)) |
86 #else | 86 #else |
87 #define ALIGN8 __attribute__((aligned(8))) | 87 #define ALIGN8 __attribute__((aligned(8))) |
88 #define ALIGN16 __attribute__((aligned(16))) | 88 #define ALIGN16 __attribute__((aligned(16))) |
89 #endif | 89 #endif |
90 | 90 |
91 | 91 |
92 // Zap value used to indicate uninitialized handle area (debug purposes). | 92 // Zap value used to indicate uninitialized handle area (debug purposes). |
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118 | 118 |
119 // Assume GCC-compatible builtins. | 119 // Assume GCC-compatible builtins. |
120 #define COPY_FP_REGISTER(fp) \ | 120 #define COPY_FP_REGISTER(fp) \ |
121 fp = reinterpret_cast<uintptr_t>(__builtin_frame_address(0)); | 121 fp = reinterpret_cast<uintptr_t>(__builtin_frame_address(0)); |
122 | 122 |
123 #endif // !defined(HOST_OS_WINDOWS)) | 123 #endif // !defined(HOST_OS_WINDOWS)) |
124 | 124 |
125 } // namespace dart | 125 } // namespace dart |
126 | 126 |
127 #endif // RUNTIME_VM_GLOBALS_H_ | 127 #endif // RUNTIME_VM_GLOBALS_H_ |
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