1 | /* Declarations and macros for the basic Mach things set at startup. |
2 | Copyright (C) 1993-2022 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 | <https://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. */ |
26 | extern mach_port_t __mach_task_self (void); |
27 | extern mach_port_t mach_task_self (void); |
28 | |
29 | /* This cache is initialized at startup. */ |
30 | extern 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. */ |
35 | extern 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. */ |
40 | extern vm_size_t __vm_page_size; |
41 | extern 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 | |