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[glibc/history.git] / mach / mach_init.h
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1 /* Declarations and macros for the basic Mach things set at startup.
2 Copyright (C) 1993, 1994, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #ifndef _MACH_INIT_H
22 #define _MACH_INIT_H 1
24 #include <mach/mach_types.h>
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);
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 ())
35 /* Kernel page size. */
36 extern vm_size_t __vm_page_size;
37 extern vm_size_t vm_page_size;
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)
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)
48 #endif /* mach_init.h */