param.h revision 153168
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 153168 2005-12-06 13:27:21Z ru $ 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 60#ifndef _NO_NAMESPACE_POLLUTION 61 62#ifndef _MACHINE_PARAM_H_ 63#define _MACHINE_PARAM_H_ 64 65#ifndef MACHINE 66#define MACHINE "arm" 67#endif 68#ifndef MACHINE_ARCH 69#define MACHINE_ARCH "arm" 70#endif 71#define MID_MACHINE MID_ARM6 72 73#ifdef SMP 74#define MAXCPU 2 75#else 76#define MAXCPU 1 77#endif /* SMP */ 78 79#define ALIGNBYTES _ALIGNBYTES 80#define ALIGN(p) _ALIGN(p) 81 82#define PAGE_SHIFT 12 83#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ 84#define PAGE_MASK (PAGE_SIZE - 1) 85#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 86 87#define PDR_SHIFT 20 /* log2(NBPDR) */ 88#define NBPDR (1 << PDR_SHIFT) 89#define NPDEPG (1 << (32 - PDR_SHIFT)) 90 91#ifndef KSTACK_PAGES 92#define KSTACK_PAGES 2 93#endif /* !KSTACK_PAGES */ 94 95#ifndef FPCONTEXTSIZE 96#define FPCONTEXTSIZE (0x100) 97#endif 98 99#ifndef KSTACK_GUARD_PAGES 100#define KSTACK_GUARD_PAGES 1 101#endif /* !KSTACK_GUARD_PAGES */ 102 103#define USPACE_SVC_STACK_TOP KSTACK_PAGES * PAGE_SIZE 104#define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000) 105#define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10) 106#define USPACE_UNDEF_STACK_BOTTOM (FPCONTEXTSIZE + 10) 107/* 108 * Mach derived conversion macros 109 */ 110#define trunc_page(x) ((x) & ~PAGE_MASK) 111#define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 112#define trunc_4mpage(x) ((unsigned)(x) & ~PDRMASK) 113#define round_4mpage(x) ((((unsigned)(x)) + PDRMASK) & ~PDRMASK) 114 115#define atop(x) ((unsigned)(x) >> PAGE_SHIFT) 116#define ptoa(x) ((unsigned)(x) << PAGE_SHIFT) 117 118#define arm32_btop(x) ((unsigned)(x) >> PAGE_SHIFT) 119#define arm32_ptob(x) ((unsigned)(x) << PAGE_SHIFT) 120 121#define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 122 123#endif /* !_MACHINE_PARAM_H_ */ 124#endif /* !_NO_NAMESPACE_POLLUTION */ 125