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28f540f4 | 1 | /* Declarations and macros for the basic Mach things set at startup. |
c84142e8 UD |
2 | Copyright (C) 1993, 1994, 1997 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 Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | 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 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
28f540f4 RM |
19 | |
20 | #ifndef _MACH_INIT_H | |
21 | ||
22 | #define _MACH_INIT_H 1 | |
23 | ||
24 | #include <mach/mach_types.h> | |
25 | ||
26 | /* Return the current task's task port. */ | |
27 | extern mach_port_t __mach_task_self (void); | |
28 | extern mach_port_t mach_task_self (void); | |
29 | ||
30 | /* This cache is initialized at startup. */ | |
31 | extern mach_port_t __mach_task_self_; | |
32 | #define __mach_task_self() (__mach_task_self_ + 0) /* Not an lvalue. */ | |
33 | #define mach_task_self() (__mach_task_self ()) | |
34 | ||
35 | /* Kernel page size. */ | |
36 | extern vm_size_t __vm_page_size; | |
37 | extern vm_size_t vm_page_size; | |
38 | ||
39 | /* Round the address X up to a page boundary. */ | |
40 | #define round_page(x) \ | |
41 | ((((vm_offset_t) (x) + __vm_page_size - 1) / __vm_page_size) * \ | |
42 | __vm_page_size) | |
43 | ||
44 | /* Truncate the address X down to a page boundary. */ | |
45 | #define trunc_page(x) \ | |
46 | ((((vm_offset_t) (x)) / __vm_page_size) * __vm_page_size) | |
47 | ||
48 | #endif /* mach_init.h */ |