5c00743626
Based on work by Vivek Prakash and Gianluca Guida. See UPDATING about caveats on currently existing accounts. . restores netbsd libc pwcache functions
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
/* $NetBSD: param.h,v 1.72 2010/02/08 19:02:29 joerg Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* William Jolitz.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)param.h 5.8 (Berkeley) 6/28/91
|
|
*/
|
|
|
|
#ifndef _I386_PARAM_H_
|
|
#define _I386_PARAM_H_
|
|
|
|
/*
|
|
* Machine dependent constants for Intel 386.
|
|
*/
|
|
|
|
/*
|
|
* Round p (pointer or byte index) up to a correctly-aligned value
|
|
* for all data types (int, long, ...). The result is u_int and
|
|
* must be cast to any desired pointer type.
|
|
*
|
|
* ALIGNED_POINTER is a boolean macro that checks whether an address
|
|
* is valid to fetch data elements of type t from on this architecture.
|
|
* This does not reflect the optimal alignment, just the possibility
|
|
* (within reasonable limits).
|
|
*
|
|
*/
|
|
#define ALIGNBYTES (sizeof(int) - 1)
|
|
#define ALIGN(p) (((u_int)(u_long)(p) + ALIGNBYTES) &~ \
|
|
ALIGNBYTES)
|
|
#define ALIGNED_POINTER(p,t) 1
|
|
|
|
#define PGSHIFT 12 /* LOG2(NBPG) */
|
|
#define NBPG (1 << PGSHIFT) /* bytes/page */
|
|
#define PGOFSET (NBPG-1) /* byte offset into page */
|
|
#define NPTEPG (NBPG/(sizeof (pt_entry_t)))
|
|
|
|
#ifndef MAXPHYS
|
|
#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
|
|
#endif
|
|
|
|
/*
|
|
* Mach derived conversion macros
|
|
*/
|
|
#define x86_round_pdr(x) \
|
|
((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1))
|
|
#define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1))
|
|
#define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT)
|
|
#define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT)
|
|
#define x86_round_page(x) ((((paddr_t)(x)) + PGOFSET) & ~PGOFSET)
|
|
#define x86_trunc_page(x) ((paddr_t)(x) & ~PGOFSET)
|
|
#define x86_btop(x) ((paddr_t)(x) >> PGSHIFT)
|
|
#define x86_ptob(x) ((paddr_t)(x) << PGSHIFT)
|
|
|
|
#ifdef __minix
|
|
/* Minix expect to find in this file PAGE_* defines. */
|
|
#include <machine/vmparam.h>
|
|
|
|
#define trunc_page(x) x86_trunc_page(x)
|
|
#define round_page(x) x86_round_page(x)
|
|
|
|
#endif
|
|
|
|
#endif /* _I386_PARAM_H_ */
|