libsyscall/mach/headers/mach_init.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, 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  * Mach Operating System
  30  * Copyright (c) 1991,1990,1989,1988,1987,1986 Carnegie Mellon University
  31  * All Rights Reserved.
  32  *
  33  * Permission to use, copy, modify and distribute this software and its
  34  * documentation is hereby granted, provided that both the copyright
  35  * notice and this permission notice appear in all copies of the
  36  * software, derivative works or modified versions, and any portions
  37  * thereof, and that both notices appear in supporting documentation.
  38  *
  39  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  40  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  41  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  42  *
  43  * Carnegie Mellon requests users of this software to return to
  44  *
  45  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  46  *  School of Computer Science
  47  *  Carnegie Mellon University
  48  *  Pittsburgh PA 15213-3890
  49  *
  50  * any improvements or extensions that they make and grant Carnegie Mellon
  51  * the rights to redistribute these changes.
  52  */
  53
  54 /*
  55  *      Items provided by the Mach environment initialization.
  56  */
  57
  58 #ifndef _MACH_INIT_
  59 #define _MACH_INIT_     1
  60
  61 #include <mach/mach_types.h>
  62 #include <stdarg.h>
  63
  64 #include <sys/cdefs.h>
  65
  66 /*
  67  *      Kernel-related ports; how a task/thread controls itself
  68  */
  69
  70 __BEGIN_DECLS
  71 extern mach_port_t mach_task_self(void);
  72 extern mach_port_t mach_host_self(void);
  73 extern mach_port_t mach_thread_self(void);
  74 extern kern_return_t host_page_size(host_t, vm_size_t *);
  75
  76 extern  mach_port_t     mach_task_self_;
  77 #define mach_task_self() mach_task_self_
  78 #define current_task()  mach_task_self()
  79
  80 __END_DECLS
  81 #include <mach/mach_traps.h>
  82 __BEGIN_DECLS
  83
  84 /*
  85  *      Other important ports in the Mach user environment
  86  */
  87
  88 extern  mach_port_t     bootstrap_port;
  89 extern  mach_port_t     name_server_port;
  90 extern  mach_port_t     environment_port;
  91 extern  mach_port_t     service_port;
  92
  93 /*
  94  *      Where these ports occur in the "mach_ports_register"
  95  *      collection... only servers or the runtime library need know.
  96  */
  97
  98 #define NAME_SERVER_SLOT        0
  99 #define ENVIRONMENT_SLOT        1
 100 #define SERVICE_SLOT            2
 101
 102 #define MACH_PORTS_SLOTS_USED   3
 103
 104 /*
 105  *      Globally interesting numbers.
 106  *      These macros assume vm_page_size is a power-of-2.
 107  */
 108
 109 extern  vm_size_t       vm_page_size;
 110 extern  vm_size_t       vm_page_mask;
 111 extern  int             vm_page_shift;
 112
 113 #define trunc_page(x)   ((x) & (~(vm_page_size - 1)))
 114 #define round_page(x)   trunc_page((x) + (vm_page_size - 1))
 115
 116 /*
 117  *      Page-size rounding macros for the fixed-width VM types.
 118  */
 119 #define mach_vm_trunc_page(x) ((mach_vm_offset_t)(x) & ~((signed)PAGE_MASK))
 120 #define mach_vm_round_page(x) (((mach_vm_offset_t)(x) + PAGE_MASK) & ~((signed)PAGE_MASK))
 121
 122 /*
 123  *      fprintf_stderr uses vprintf_stderr_func to produce
 124  *      error messages, this can be overridden by a user
 125  *      application to point to a user-specified output function
 126  */
 127 extern int (*vprintf_stderr_func)(const char *format, va_list ap);
 128 __END_DECLS
 129
 130 #endif  /* _MACH_INIT_ */