b1c4ba4ab6
Due to the ABI we are using we have to use the earm architecture moniker for the build system to behave correctly. This involves then some headers to move around. There is also a few related Makefile updates as well as minor source code corrections.
261 lines
8.8 KiB
C
261 lines
8.8 KiB
C
/* $NetBSD: param.h,v 1.421 2012/10/13 17:54:40 dholland Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)param.h 8.3 (Berkeley) 4/4/95
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*/
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#ifndef _SYS_PARAM_H_
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#define _SYS_PARAM_H_
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/*
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* Historic BSD #defines -- probably will remain untouched for all time.
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*/
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#define BSD 199506 /* System version (year & month). */
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#define BSD4_3 1
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#ifndef __minix
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#define BSD4_4 1
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#endif
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/*
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* #define __NetBSD_Version__ MMmmrrpp00
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*
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* M = major version
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* m = minor version; a minor number of 99 indicates current.
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* r = 0 (*)
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* p = patchlevel
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*
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* When new releases are made, src/gnu/usr.bin/groff/tmac/mdoc.local
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* needs to be updated and the changes sent back to the groff maintainers.
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*
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* (*) Up to 2.0I "release" used to be "",A-Z,Z[A-Z] but numeric
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* e.g. NetBSD-1.2D = 102040000 ('D' == 4)
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* NetBSD-2.0H (200080000) was changed on 20041001 to:
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* 2.99.9 (299000900)
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*/
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#define __NetBSD_Version__ 699001300 /* NetBSD 6.99.13 */
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#define __NetBSD_Prereq__(M,m,p) (((((M) * 100000000) + \
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(m) * 1000000) + (p) * 100) <= __NetBSD_Version__)
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/*
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* Historical NetBSD #define
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*
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* NetBSD 1.4 was the last release for which this value was incremented.
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* The value is now permanently fixed at 199905. It will never be
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* changed again.
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*
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* New code must use __NetBSD_Version__ instead, and should not even
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* count on NetBSD being defined.
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*
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*/
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#define NetBSD 199905 /* NetBSD version (year & month). */
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/*
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* There macros determine if we are running in protected mode or not.
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* _HARDKERNEL: code uses kernel namespace and runs in hw priviledged mode
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* _SOFTKERNEL: code uses kernel namespace but runs without hw priviledges
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*/
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#if defined(_KERNEL) && !defined(_RUMPKERNEL)
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#define _HARDKERNEL
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#endif
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#if defined(_KERNEL) && defined(_RUMPKERNEL)
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#define _SOFTKERNEL
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#endif
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#include <sys/null.h>
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#ifndef __ASSEMBLER__
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#include <sys/inttypes.h>
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#include <sys/types.h>
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/*
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* Machine-independent constants (some used in following include files).
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* Redefined constants are from POSIX 1003.1 limits file.
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*
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* MAXCOMLEN should be >= sizeof(ac_comm) (see <acct.h>)
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* MAXHOSTNAMELEN should be >= (_POSIX_HOST_NAME_MAX + 1) (see <limits.h>)
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* MAXLOGNAME should be >= UT_NAMESIZE (see <utmp.h>)
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*/
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#include <sys/syslimits.h>
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#define MAXCOMLEN 16 /* max command name remembered */
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#define MAXINTERP PATH_MAX /* max interpreter file name length */
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/* DEPRECATED: use LOGIN_NAME_MAX instead. */
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#define MAXLOGNAME (LOGIN_NAME_MAX - 1) /* max login name length */
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#ifndef __minix
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#define NCARGS ARG_MAX /* max bytes for an exec function */
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#endif
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#define NGROUPS NGROUPS_MAX /* max number groups */
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#define NOGROUP 65535 /* marker for empty group set member */
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#define MAXHOSTNAMELEN 256 /* max hostname size */
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#ifndef NOFILE
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#define NOFILE OPEN_MAX /* max open files per process */
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#endif
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#ifndef MAXUPRC /* max simultaneous processes */
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#define MAXUPRC CHILD_MAX /* POSIX 1003.1-compliant default */
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#else
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#if (MAXUPRC - 0) < CHILD_MAX
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#error MAXUPRC less than CHILD_MAX. See options(4) for details.
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#endif /* (MAXUPRC - 0) < CHILD_MAX */
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#endif /* !defined(MAXUPRC) */
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/* Signals. */
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#include <sys/signal.h>
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/* Machine type dependent parameters. */
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#include <machine/param.h>
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#include <machine/limits.h>
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/* pages ("clicks") to disk blocks */
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#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
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#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
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/* bytes to pages */
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#define ctob(x) ((x) << PGSHIFT)
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#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
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/* bytes to disk blocks */
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#define dbtob(x) ((x) << DEV_BSHIFT)
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#define btodb(x) ((x) >> DEV_BSHIFT)
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#ifndef COHERENCY_UNIT
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#define COHERENCY_UNIT 64
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#endif
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#ifndef CACHE_LINE_SIZE
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#define CACHE_LINE_SIZE 64
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#endif
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#ifndef MAXCPUS
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#define MAXCPUS 32
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#endif
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#ifndef MAX_LWP_PER_PROC
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#define MAX_LWP_PER_PROC 8000
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#endif
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_int and must be cast to
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* any desired pointer type.
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*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*
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*/
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#define ALIGNBYTES __ALIGNBYTES
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#ifndef ALIGN
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#define ALIGN(p) (((uintptr_t)(p) + ALIGNBYTES) & ~ALIGNBYTES)
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#endif
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#ifndef ALIGNED_POINTER
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#define ALIGNED_POINTER(p,t) ((((uintptr_t)(p)) & (sizeof(t) - 1)) == 0)
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#endif
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/*
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* Miscellaneous.
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*/
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#define NBPW sizeof(int) /* number of bytes per word (integer) */
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#define CMASK 022 /* default file mask: S_IWGRP|S_IWOTH */
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#define NODEV (dev_t)(-1) /* non-existent device */
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#define CBLOCK 64 /* Clist block size, must be a power of 2. */
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#define CBQSIZE (CBLOCK/NBBY) /* Quote bytes/cblock - can do better. */
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/* Data chars/clist. */
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#define CBSIZE (CBLOCK - (int)sizeof(struct cblock *) - CBQSIZE)
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#define CROUND (CBLOCK - 1) /* Clist rounding. */
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/*
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* File system parameters and macros.
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*
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* The file system is made out of blocks of at most MAXBSIZE units, with
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* smaller units (fragments) only in the last direct block. MAXBSIZE
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* primarily determines the size of buffers in the buffer pool. It may be
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* made larger without any effect on existing file systems; however making
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* it smaller may make some file systems unmountable.
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*/
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#ifndef MAXBSIZE /* XXX */
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#define MAXBSIZE MAXPHYS
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#endif
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#define MAXFRAG 8
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/*
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* MAXPATHLEN defines the longest permissible path length after expanding
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* symbolic links. It is used to allocate a temporary buffer from the buffer
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* pool in which to do the name expansion, hence should be a power of two,
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* and must be less than or equal to MAXBSIZE. MAXSYMLINKS defines the
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* maximum number of symbolic links that may be expanded in a path name.
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* It should be set high enough to allow all legitimate uses, but halt
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* infinite loops reasonably quickly.
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*
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* MAXSYMLINKS should be >= _POSIX_SYMLOOP_MAX (see <limits.h>)
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*/
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#define MAXPATHLEN PATH_MAX
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#define MAXSYMLINKS 32
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/*
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* This is the maximum individual filename component length enforced by
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* namei. Filesystems cannot exceed this limit. The upper bound for that
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* limit is NAME_MAX. We don't bump it for now, for compatibility with
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* old binaries during the time where MAXPATHLEN was 511 and NAME_MAX was
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* 255
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*/
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#define KERNEL_NAME_MAX 255
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/* Bit map related macros. */
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#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
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#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
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#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
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#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
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/* Macros for counting and rounding. */
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#endif
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#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
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#define rounddown(x,y) (((x)/(y))*(y))
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#define roundup2(x, m) (((x) + (m) - 1) & ~((m) - 1))
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#define powerof2(x) ((((x)-1)&(x))==0)
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/* Macros for min/max. */
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#define MIN(a,b) ((/*CONSTCOND*/(a)<(b))?(a):(b))
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#define MAX(a,b) ((/*CONSTCOND*/(a)>(b))?(a):(b))
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#endif /* !__ASSEMBLER__ */
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#endif /* !_SYS_PARAM_H_ */
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