lib/int_util.c

   1 /* ===-- int_util.c - Implement internal utilities --------------------------===
   2  *
   3  *                     The LLVM Compiler Infrastructure
   4  *
   5  * This file is dual licensed under the MIT and the University of Illinois Open
   6  * Source Licenses. See LICENSE.TXT for details.
   7  *
   8  * ===----------------------------------------------------------------------===
   9  */
  10
  11 #include "int_util.h"
  12 #include "int_lib.h"
  13
  14 /* NOTE: The definitions in this file are declared weak because we clients to be
  15  * able to arbitrarily package individual functions into separate .a files. If
  16  * we did not declare these weak, some link situations might end up seeing
  17  * duplicate strong definitions of the same symbol.
  18  *
  19  * We can't use this solution for kernel use (which may not support weak), but
  20  * currently expect that when built for kernel use all the functionality is
  21  * packaged into a single library.
  22  */
  23
  24 #ifdef KERNEL_USE
  25
  26 extern void panic(const char *, ...) __attribute__((noreturn));
  27 #ifndef _WIN32
  28 __attribute__((visibility("hidden")))
  29 #endif
  30 void compilerrt_abort_impl(const char *file, int line, const char *function) {
  31   panic("%s:%d: abort in %s", file, line, function);
  32 }
  33
  34 #elif __APPLE__
  35
  36 /* from libSystem.dylib */
  37 extern void __assert_rtn(const char *func, const char *file,
  38                      int line, const char * message) __attribute__((noreturn));
  39
  40 #ifndef _WIN32
  41 __attribute__((weak))
  42 __attribute__((visibility("hidden")))
  43 #endif
  44 void compilerrt_abort_impl(const char *file, int line, const char *function) {
  45   __assert_rtn(function, file, line, "libcompiler_rt abort");
  46 }
  47
  48 #else
  49
  50 /* Get the system definition of abort() */
  51 #include <stdlib.h>
  52
  53 #ifndef _WIN32
  54 __attribute__((weak))
  55 __attribute__((visibility("hidden")))
  56 #endif
  57 void compilerrt_abort_impl(const char *file, int line, const char *function) {
  58   abort();
  59 }
  60
  61 #endif