libsyscall/wrappers/_libc_funcptr.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 <mach/mach.h>
  30 #include <mach/mach_init.h>
  31
  32 extern void (*_libc_set_errno)(int);
  33
  34 static mach_port_t (*_libc_get_reply_port)(void);
  35 static void (*_libc_set_reply_port)(mach_port_t);
  36
  37 /*
  38  * Called at Libsystem initialise time, sets up callbacks we
  39  * need to get at thread variables inside of Libc
  40  */
  41 void
  42 _mig_reply_port_callbacks(mach_port_t (*get)(void), void (*set)(mach_port_t))
  43 {
  44         _libc_get_reply_port = get;
  45         _libc_set_reply_port = set;
  46 }
  47
  48 mach_port_t _mig_get_reply_port(void) __attribute__((visibility("hidden")));
  49 mach_port_t
  50 _mig_get_reply_port()
  51 {
  52         return _libc_get_reply_port();
  53 }
  54
  55 void _mig_set_reply_port(mach_port_t port) __attribute__((visibility("hidden")));
  56 void
  57 _mig_set_reply_port(mach_port_t port)
  58 {
  59         _libc_set_reply_port(port);
  60 }
  61
  62 void cthread_set_errno_self(int errno) __attribute__((visibility("hidden")));
  63 void
  64 cthread_set_errno_self(int errno)
  65 {
  66         _libc_set_errno(errno);
  67 }
  68
  69
  70 void _pthread_set_self(void* ptr) __attribute__((visibility("hidden")));
  71 void
  72 _pthread_set_self(void* ptr) {}