| 1 | //===-- int_util.h - internal utility functions ---------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file is not part of the interface of this library. |
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| 10 | // |
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| 11 | // This file defines non-inline utilities which are available for use in the |
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| 12 | // library. The function definitions themselves are all contained in int_util.c |
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| 13 | // which will always be compiled into any compiler-rt library. |
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| 14 | // |
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| 15 | //===----------------------------------------------------------------------===// |
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| 16 | |
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| 17 | #ifndef INT_UTIL_H |
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| 18 | #define INT_UTIL_H |
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| 19 | |
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| 20 | /// \brief Trigger a program abort (or panic for kernel code). |
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| 21 | #define compilerrt_abort() __compilerrt_abort_impl(__FILE__, __LINE__, __func__) |
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| 22 | |
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| 23 | NORETURN void __compilerrt_abort_impl(const char *file, int line, |
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| 24 | const char *function); |
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| 25 | |
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| 26 | #define COMPILE_TIME_ASSERT(expr) COMPILE_TIME_ASSERT1(expr, __COUNTER__) |
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| 27 | #define COMPILE_TIME_ASSERT1(expr, cnt) COMPILE_TIME_ASSERT2(expr, cnt) |
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| 28 | #define COMPILE_TIME_ASSERT2(expr, cnt) \ |
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| 29 | typedef char ct_assert_##cnt[(expr) ? 1 : -1] UNUSED |
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| 30 | |
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| 31 | // Force unrolling the code specified to be repeated N times. |
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| 32 | #define REPEAT_0_TIMES(code_to_repeat) /* do nothing */ |
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| 33 | #define REPEAT_1_TIMES(code_to_repeat) code_to_repeat |
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| 34 | #define REPEAT_2_TIMES(code_to_repeat) \ |
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| 35 | REPEAT_1_TIMES(code_to_repeat) \ |
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| 36 | code_to_repeat |
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| 37 | #define REPEAT_3_TIMES(code_to_repeat) \ |
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| 38 | REPEAT_2_TIMES(code_to_repeat) \ |
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| 39 | code_to_repeat |
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| 40 | #define REPEAT_4_TIMES(code_to_repeat) \ |
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| 41 | REPEAT_3_TIMES(code_to_repeat) \ |
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| 42 | code_to_repeat |
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| 43 | |
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| 44 | #define REPEAT_N_TIMES_(N, code_to_repeat) REPEAT_##N##_TIMES(code_to_repeat) |
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| 45 | #define REPEAT_N_TIMES(N, code_to_repeat) REPEAT_N_TIMES_(N, code_to_repeat) |
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| 46 | |
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| 47 | #endif // INT_UTIL_H |
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| 48 | |
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