param.h revision 137939
1/*- 2 * Copyright (c) 2001 David E. O'Brien 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * William Jolitz. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: @(#)param.h 5.8 (Berkeley) 6/28/91 38 * $FreeBSD: head/sys/arm/include/param.h 137939 2004-11-20 16:51:32Z cognet $ 39 */ 40 41/* 42 * Machine dependent constants for StrongARM 43 */ 44 45/* 46 * Round p (pointer or byte index) up to a correctly-aligned value 47 * for all data types (int, long, ...). The result is unsigned int 48 * and must be cast to any desired pointer type. 49 */ 50#ifndef _ALIGNBYTES 51#define _ALIGNBYTES (sizeof(int) - 1) 52#endif 53#ifndef _ALIGN 54#define _ALIGN(p) (((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES) 55#endif 56 57#define STACKALIGNBYTES (8 - 1) 58#define STACKALIGN(p) ((u_int)(p) & ~STACKALIGNBYTES) 59#ifndef _MACHINE 60#define _MACHINE "arm" 61#endif 62#ifndef _MACHINE_ARCH 63#define _MACHINE_ARCH "arm" 64#endif 65 66#ifndef _NO_NAMESPACE_POLLUTION 67 68#ifndef _MACHINE_PARAM_H_ 69#define _MACHINE_PARAM_H_ 70 71#ifndef MACHINE 72#define MACHINE "arm" 73#endif 74#ifndef MACHINE_ARCH 75#define MACHINE_ARCH "arm" 76#endif 77#define MID_MACHINE MID_ARM6 78 79#ifdef SMP 80#define MAXCPU 2 81#else 82#define MAXCPU 1 83#endif /* SMP */ 84 85#define ALIGNBYTES _ALIGNBYTES 86#define ALIGN(p) _ALIGN(p) 87 88#define PAGE_SHIFT 12 89#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 90#define PAGE_MASK (PAGE_SIZE - 1) 91#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 92 93#define PDR_SHIFT 20 /* log2(NBPDR) */ 94#define NBPDR (1 << PDR_SHIFT) 95#define NPDEPG (1 << (32 - PDR_SHIFT)) 96 97#ifndef KSTACK_PAGES 98#define KSTACK_PAGES 2 99#endif /* !KSTACK_PAGES */ 100 101#ifndef FPCONTEXTSIZE 102#define FPCONTEXTSIZE (0x100) 103#endif 104 105#ifndef KSTACK_GUARD_PAGES 106#define KSTACK_GUARD_PAGES 1 107#endif /* !KSTACK_GUARD_PAGES */ 108 109#define USPACE_SVC_STACK_TOP KSTACK_PAGES * PAGE_SIZE 110#define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000) 111#define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10) 112#define USPACE_UNDEF_STACK_BOTTOM (FPCONTEXTSIZE + 10) 113/* 114 * Mach derived conversion macros 115 */ 116#define trunc_page(x) ((x) & ~PAGE_MASK) 117#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 118#define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK) 119#define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 120 121#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 122#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 123 124#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 125#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 126 127#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 128 129#endif /* !_MACHINE_PARAM_H_ */ 130#endif /* !_NO_NAMESPACE_POLLUTION */ 131