| Daniel Boulby | 318e7a5 | 2022-10-21 20:20:52 +0100 | [diff] [blame] | 1 | //===-- int_util.h - internal utility functions ---------------------------===// |
| 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 | // This file is not part of the interface of this library. |
| 10 | // |
| 11 | // This file defines non-inline utilities which are available for use in the |
| 12 | // library. The function definitions themselves are all contained in int_util.c |
| 13 | // which will always be compiled into any compiler-rt library. |
| 14 | // |
| 15 | //===----------------------------------------------------------------------===// |
| 16 | |
| 17 | #ifndef INT_UTIL_H |
| 18 | #define INT_UTIL_H |
| 19 | |
| 20 | /// \brief Trigger a program abort (or panic for kernel code). |
| 21 | #define compilerrt_abort() __compilerrt_abort_impl(__FILE__, __LINE__, __func__) |
| 22 | |
| 23 | NORETURN void __compilerrt_abort_impl(const char *file, int line, |
| 24 | const char *function); |
| 25 | |
| 26 | #define COMPILE_TIME_ASSERT(expr) COMPILE_TIME_ASSERT1(expr, __COUNTER__) |
| 27 | #define COMPILE_TIME_ASSERT1(expr, cnt) COMPILE_TIME_ASSERT2(expr, cnt) |
| 28 | #define COMPILE_TIME_ASSERT2(expr, cnt) \ |
| 29 | typedef char ct_assert_##cnt[(expr) ? 1 : -1] UNUSED |
| 30 | |
| 31 | // Force unrolling the code specified to be repeated N times. |
| 32 | #define REPEAT_0_TIMES(code_to_repeat) /* do nothing */ |
| 33 | #define REPEAT_1_TIMES(code_to_repeat) code_to_repeat |
| 34 | #define REPEAT_2_TIMES(code_to_repeat) \ |
| 35 | REPEAT_1_TIMES(code_to_repeat) \ |
| 36 | code_to_repeat |
| 37 | #define REPEAT_3_TIMES(code_to_repeat) \ |
| 38 | REPEAT_2_TIMES(code_to_repeat) \ |
| 39 | code_to_repeat |
| 40 | #define REPEAT_4_TIMES(code_to_repeat) \ |
| 41 | REPEAT_3_TIMES(code_to_repeat) \ |
| 42 | code_to_repeat |
| 43 | |
| 44 | #define REPEAT_N_TIMES_(N, code_to_repeat) REPEAT_##N##_TIMES(code_to_repeat) |
| 45 | #define REPEAT_N_TIMES(N, code_to_repeat) REPEAT_N_TIMES_(N, code_to_repeat) |
| 46 | |
| 47 | #endif // INT_UTIL_H |