mach/mach_init.c

   1 /* Copyright (C) 1992-2023 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 <mach/vm_param.h>
  21 #include <unistd.h>
  22
  23 mach_port_t __mach_task_self_;
  24 mach_port_t __mach_host_self_;
  25 vm_size_t __vm_page_size = 0;   /* Must be data not bss for weak alias.  */
  26 weak_alias (__vm_page_size, vm_page_size)
  27
  28 #ifdef NDR_DEF_HEADER
  29 /* This defines NDR_record, which the MiG-generated stubs use. XXX namespace */
  30 # include NDR_DEF_HEADER
  31 #endif
  32
  33 void
  34 __mach_init (void)
  35 {
  36   kern_return_t err;
  37
  38   __mach_task_self_ = (__mach_task_self) ();
  39   __mach_host_self_ = (__mach_host_self) ();
  40   __mig_init (0);
  41
  42 #ifdef PAGE_SIZE
  43   __vm_page_size = PAGE_SIZE;
  44   (void) err;
  45 #elif defined (HAVE_HOST_PAGE_SIZE)
  46   if (err = __host_page_size (__mach_host_self (), &__vm_page_size))
  47     _exit (err);
  48 #else
  49   {
  50     vm_statistics_data_t stats;
  51     if (err = __vm_statistics (__mach_task_self (), &stats))
  52       _exit (err);
  53     __vm_page_size = stats.pagesize;
  54   }
  55 #endif
  56 }
  57 weak_alias (__mach_init, mach_init)