llvm-project

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//===-- int_util.c - Implement internal utilities -------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "int_lib.h"
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// NOTE: The definitions in this file are declared weak because we clients to be
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// able to arbitrarily package individual functions into separate .a files. If
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// we did not declare these weak, some link situations might end up seeing
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// duplicate strong definitions of the same symbol.
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//
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// We can't use this solution for kernel use (which may not support weak), but
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// currently expect that when built for kernel use all the functionality is
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// packaged into a single library.
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#ifdef KERNEL_USE
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NORETURN extern void panic(const char *, ...);
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#ifndef _WIN32
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__attribute__((visibility("hidden")))
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#endif
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void __compilerrt_abort_impl(const char *file, int line, const char *function) {
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  panic("%s:%d: abort in %s", file, line, function);
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}
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#elif __APPLE__
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// from libSystem.dylib
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NORETURN extern void __assert_rtn(const char *func, const char *file, int line,
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                                  const char *message);
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__attribute__((weak))
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__attribute__((visibility("hidden")))
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void __compilerrt_abort_impl(const char *file, int line, const char *function) {
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  __assert_rtn(function, file, line, "libcompiler_rt abort");
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}
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#else
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#ifdef _WIN32
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#include <stdlib.h>
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#endif
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#ifndef _WIN32
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__attribute__((weak))
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__attribute__((visibility("hidden")))
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#endif
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void __compilerrt_abort_impl(const char *file, int line, const char *function) {
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#if !__STDC_HOSTED__
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  // Avoid depending on libc when compiling with -ffreestanding.
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  __builtin_trap();
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#elif defined(_WIN32)
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  abort();
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#else
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  __builtin_abort();
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#endif
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}
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#endif
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