[thirdparty/glibc.git] / mach / mach_init.h

/* Declarations and macros for the basic Mach things set at startup.
   Copyright (C) 1993, 1994, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef	_MACH_INIT_H

#define	_MACH_INIT_H	1

#include <mach/mach_types.h>

/* Return the current task's task port.  */
extern mach_port_t __mach_task_self (void);
extern mach_port_t mach_task_self (void);

/* This cache is initialized at startup.  */
extern mach_port_t __mach_task_self_;
#define __mach_task_self()	(__mach_task_self_ + 0)	/* Not an lvalue.  */
#define mach_task_self()	(__mach_task_self ())

/* Kernel page size.  */
extern vm_size_t __vm_page_size;
extern vm_size_t vm_page_size;

/* Round the address X up to a page boundary.  */
#define round_page(x)	\
  ((((vm_offset_t) (x) + __vm_page_size - 1) / __vm_page_size) * \
   __vm_page_size)

/* Truncate the address X down to a page boundary.  */
#define trunc_page(x)	\
  ((((vm_offset_t) (x)) / __vm_page_size) * __vm_page_size)

#endif	/* mach_init.h */
Commit	Line	Data
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
41bdb6e2 AJ	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.
c84142e8 UD	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
41bdb6e2	13	Lesser General Public License for more details.
c84142e8	14
41bdb6e2 AJ	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. */
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 */