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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 PLATFORM_UTILS_LINUX_H_ | 5 #ifndef PLATFORM_UTILS_ANDROID_H_ |
| 6 #define PLATFORM_UTILS_LINUX_H_ | 6 #define PLATFORM_UTILS_ANDROID_H_ |
| 7 | 7 |
| 8 namespace dart { | 8 namespace dart { |
| 9 | 9 |
| 10 inline int Utils::CountTrailingZeros(uword x) { | 10 inline int Utils::CountTrailingZeros(uword x) { |
| 11 #if defined(ARCH_IS_32_BIT) | 11 #if defined(ARCH_IS_32_BIT) |
| 12 return __builtin_ctzl(x); | 12 return __builtin_ctzl(x); |
| 13 #elif defined(ARCH_IS_64_BIT) | 13 #elif defined(ARCH_IS_64_BIT) |
| 14 return __builtin_ctzll(x); | 14 return __builtin_ctzll(x); |
| 15 #else | 15 #else |
| 16 #error Architecture is not 32-bit or 64-bit. | 16 #error Architecture is not 32-bit or 64-bit. |
| 17 #endif | 17 #endif |
| 18 }; | 18 }; |
| 19 | 19 |
| 20 } // namespace dart | 20 } // namespace dart |
| 21 | 21 |
| 22 #endif // PLATFORM_UTILS_LINUX_H_ | 22 #endif // PLATFORM_UTILS_ANDROID_H_ |
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