/* $FreeBSD$ */ /* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department and Ralph Campbell. * * 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. * 4. 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. * * from: Utah $Hdr: machparam.h 1.11 89/08/14$ * * @(#)param.h 8.1 (Berkeley) 6/10/93 */ /* * Machine dependent constants for the Alpha. */ /* * Round p (pointer or byte index) up to a correctly-aligned value for all * data types (int, long, ...). The result is u_long 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). * */ #ifndef _ALIGNBYTES #define _ALIGNBYTES 7 #endif #ifndef _ALIGN #define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES) #endif #ifndef _ALIGNED_POINTER #define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) #endif #ifndef _MACHINE #define _MACHINE alpha #endif #ifndef _MACHINE_ARCH #define _MACHINE_ARCH alpha #endif #ifndef _NO_NAMESPACE_POLLUTION #ifndef _MACHINE_PARAM_H_ #define _MACHINE_PARAM_H_ #ifndef MACHINE #define MACHINE "alpha" #endif #ifndef MACHINE_ARCH #define MACHINE_ARCH "alpha" #endif #define MID_MACHINE MID_ALPHA #include #include #define MAXSMPCPU 8 #ifdef SMP #define MAXCPU MAXSMPCPU #else #define MAXCPU 1 #endif #define ALIGNBYTES _ALIGNBYTES #define ALIGN(p) _ALIGN(p) #define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) #define PAGE_SIZE (1 << ALPHA_PGSHIFT) /* bytes/page */ #define PAGE_SHIFT ALPHA_PGSHIFT #define PAGE_MASK (PAGE_SIZE-1) #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) #define KERNBASE 0xfffffc0000300000LL /* start of kernel virtual */ #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) #define CLSIZE 1 #define CLSIZELOG2 0 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ #define SSIZE 1 /* initial stack size/NBPG */ #define SINCR 1 /* increment of stack/NBPG */ #ifndef KSTACK_PAGES #define KSTACK_PAGES 2 /* pages of kstack (with pcb) */ #endif #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ #define UAREA_PAGES 1 /* pages of u-area */ /* * Mach derived conversion macros */ #define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) #define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) #define alpha_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) #define alpha_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) #define pgtok(x) ((x) * (PAGE_SIZE / 1024)) #endif /* !_MACHINE_PARAM_H_ */ #endif /* !_NO_NAMESPACE_POLLUTION */