| 1 | //===-- int_util.c - Implement internal utilities -------------------------===// |
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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 | #include "int_lib.h" |
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| 10 | |
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| 11 | // NOTE: The definitions in this file are declared weak because we clients to be |
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| 12 | // able to arbitrarily package individual functions into separate .a files. If |
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| 13 | // we did not declare these weak, some link situations might end up seeing |
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| 14 | // duplicate strong definitions of the same symbol. |
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| 15 | // |
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| 16 | // We can't use this solution for kernel use (which may not support weak), but |
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| 17 | // currently expect that when built for kernel use all the functionality is |
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| 18 | // packaged into a single library. |
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| 19 | |
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| 20 | #ifdef KERNEL_USE |
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| 21 | |
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| 22 | NORETURN extern void panic(const char *, ...); |
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| 23 | #ifndef _WIN32 |
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| 24 | __attribute__((visibility("hidden" ))) |
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| 25 | #endif |
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| 26 | void __compilerrt_abort_impl(const char *file, int line, const char *function) { |
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| 27 | panic("%s:%d: abort in %s" , file, line, function); |
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| 28 | } |
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| 29 | |
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| 30 | #elif __APPLE__ |
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| 31 | |
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| 32 | // from libSystem.dylib |
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| 33 | NORETURN extern void __assert_rtn(const char *func, const char *file, int line, |
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| 34 | const char *message); |
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| 35 | |
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| 36 | __attribute__((weak)) |
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| 37 | __attribute__((visibility("hidden" ))) |
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| 38 | void __compilerrt_abort_impl(const char *file, int line, const char *function) { |
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| 39 | __assert_rtn(function, file, line, "libcompiler_rt abort" ); |
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| 40 | } |
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| 41 | |
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| 42 | #else |
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| 43 | |
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| 44 | #ifdef _WIN32 |
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| 45 | #include <stdlib.h> |
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| 46 | #endif |
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| 47 | |
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| 48 | #ifndef _WIN32 |
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| 49 | __attribute__((weak)) |
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| 50 | __attribute__((visibility("hidden" ))) |
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| 51 | #endif |
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| 52 | void __compilerrt_abort_impl(const char *file, int line, const char *function) { |
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| 53 | #if !__STDC_HOSTED__ |
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| 54 | // Avoid depending on libc when compiling with -ffreestanding. |
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| 55 | __builtin_trap(); |
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| 56 | #elif defined(_WIN32) |
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| 57 | abort(); |
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| 58 | #else |
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| 59 | __builtin_abort(); |
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| 60 | #endif |
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| 61 | } |
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| 62 | |
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| 63 | #endif |
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| 64 | |
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