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| 1 | //===-- Definition of macros from time.h ---------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #ifndef LLVM_LIBC_MACROS_BAREMETAL_TIME_MACROS_H |
| 10 | #define LLVM_LIBC_MACROS_BAREMETAL_TIME_MACROS_H |
| 11 | |
| 12 | #ifdef __CLK_TCK |
| 13 | #define CLOCKS_PER_SEC __CLK_TCK |
| 14 | #else |
| 15 | #if defined(__arm__) || defined(_M_ARM) || defined(__aarch64__) || \ |
| 16 | defined(__arm64__) || defined(_M_ARM64) |
| 17 | // This default implementation of this function shall use semihosting |
| 18 | // Semihosting measures time in centiseconds |
| 19 | // https://github.com/ARM-software/abi-aa/blob/main/semihosting/semihosting.rst#sys-clock-0x10 |
| 20 | #define CLOCKS_PER_SEC 100 |
| 21 | #else |
| 22 | #define CLOCKS_PER_SEC 1000000 |
| 23 | #endif |
| 24 | #endif |
| 25 | |
| 26 | #endif // LLVM_LIBC_MACROS_BAREMETAL_TIME_MACROS_H |
| 27 |
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