libsyscall/wrappers/_libkernel_init.c

   1 /*
   2  * Copyright (c) 2010 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include "_libkernel_init.h"
  30
  31 extern int mach_init(void);
  32
  33 /* dlsym() funcptr is for legacy support in exc_catcher */
  34 void* (*_dlsym)(void*, const char*) __attribute__((visibility("hidden")));
  35
  36 __attribute__((visibility("hidden")))
  37 _libkernel_functions_t _libkernel_functions;
  38
  39 void
  40 __libkernel_init(_libkernel_functions_t fns,
  41                 const char *envp[] __attribute__((unused)),
  42                 const char *apple[] __attribute__((unused)),
  43                 const struct ProgramVars *vars __attribute__((unused)))
  44 {
  45         _libkernel_functions = fns;
  46         if (fns->dlsym) {
  47                 _dlsym = fns->dlsym;
  48         }
  49         mach_init();
  50 }