mach/mach_init.c

   1 /* Copyright (C) 1992-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <mach.h>
  19 #include <mach/mig_support.h>
  20 #include <unistd.h>
  21
  22 mach_port_t __mach_task_self_;
  23 mach_port_t __mach_host_self_;
  24 vm_size_t __vm_page_size = 0;   /* Must be data not bss for weak alias.  */
  25 weak_alias (__vm_page_size, vm_page_size)
  26
  27 #ifdef NDR_DEF_HEADER
  28 /* This defines NDR_record, which the MiG-generated stubs use. XXX namespace */
  29 # include NDR_DEF_HEADER
  30 #endif
  31
  32 void
  33 __mach_init (void)
  34 {
  35   kern_return_t err;
  36
  37   __mach_task_self_ = (__mach_task_self) ();
  38   __mach_host_self_ = (__mach_host_self) ();
  39   __mig_init (0);
  40
  41 #ifdef HAVE_HOST_PAGE_SIZE
  42   if (err = __host_page_size (__mach_host_self (), &__vm_page_size))
  43     _exit (err);
  44 #else
  45   {
  46     vm_statistics_data_t stats;
  47     if (err = __vm_statistics (__mach_task_self (), &stats))
  48       _exit (err);
  49     __vm_page_size = stats.pagesize;
  50   }
  51 #endif
  52 }
  53 weak_alias (__mach_init, mach_init)