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1/* Declarations and macros for the basic Mach things set at startup.
2 Copyright (C) 1993-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19#ifndef _MACH_INIT_H
20
21#define _MACH_INIT_H 1
22
23#include <mach/mach_types.h>
24
25/* Return the current task's task port. */
26extern mach_port_t __mach_task_self (void);
27extern mach_port_t mach_task_self (void);
28
29/* This cache is initialized at startup. */
30extern mach_port_t __mach_task_self_;
31#define __mach_task_self() (__mach_task_self_ + 0) /* Not an lvalue. */
32#define mach_task_self() (__mach_task_self ())
33
34/* This cache is initialized at startup. */
35extern mach_port_t __mach_host_self_;
36#define __mach_host_self() (__mach_host_self_ + 0) /* Not an lvalue. */
37#define mach_host_self() (__mach_host_self ())
38
39/* Kernel page size. */
40extern vm_size_t __vm_page_size;
41extern vm_size_t vm_page_size;
42
43/* Round the address X up to a page boundary. */
44#define round_page(x) \
45 ((((vm_offset_t) (x) + __vm_page_size - 1) / __vm_page_size) * \
46 __vm_page_size)
47
48/* Truncate the address X down to a page boundary. */
49#define trunc_page(x) \
50 ((((vm_offset_t) (x)) / __vm_page_size) * __vm_page_size)
51
52#endif /* mach_init.h */
53

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