libsyscall/mach/mach_init_libSystem.c

   1 /*
   2  * Copyright (c) 2007 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 #ifdef __DYNAMIC__
  29 struct ProgramVars; /* forward reference */
  30
  31 extern void pthread_init(void);                         // from libc.a
  32 extern void __libc_init(const struct ProgramVars* vars);        // from libc.a
  33 extern void __keymgr_initializer(void);         // from libkeymgr.a
  34 extern void _dyld_initializer(void);            // from libdyld.a
  35
  36 /*
  37  * libsyscall_initializer() initializes all of libSystem.dylib <rdar://problem/4892197>
  38  */
  39 static __attribute__((constructor))
  40 void libSystem_initializer(int argc, const char* argv[], const char* envp[], const char* apple[], const struct ProgramVars* vars)
  41 {
  42         mach_init();
  43         pthread_init();
  44         __libc_init(vars);
  45         __keymgr_initializer();
  46         _dyld_initializer();
  47 }
  48
  49 /*
  50  *  Old crt1.o glue used to call through mach_init_routine which was used to initialize libSystem.
  51  *  LibSystem now auto-initializes but mach_init_routine is left for binary compatibility.
  52  */
  53 static void mach_init_old() {}
  54 void (*mach_init_routine)(void) = &mach_init_old;
  55
  56 #endif /* __DYNAMIC__ */