/* $OpenBSD: vmparam.h,v 1.30 2004/11/28 01:36:38 mickey Exp $ */ /* $NetBSD: vmparam.h,v 1.15 1994/10/27 04:16:34 cgd 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. * * @(#)vmparam.h 5.9 (Berkeley) 5/12/91 */ #ifndef _MACHINE_VM_PARAM_H_ #define _MACHINE_VM_PARAM_H_ /* * Machine dependent constants for 386. */ /* * Virtual address space arrangement. On 386, both user and kernel * share the address space, not unlike the vax. * USRTEXT is the start of the user text/data space, while USRSTACK * is the top (end) of the user stack. Immediately above the user stack * resides the user structure, which is UPAGES long and contains the * kernel stack. * * Immediately after the user structure is the page table map, and then * kernal address space. */ #define USRTEXT PAGE_SIZE #define USRSTACK VM_MAXUSER_ADDRESS /* * Virtual memory related constants, all in bytes */ #define MAXTSIZ (64*1024*1024) /* max text size */ #ifndef DFLDSIZ #define DFLDSIZ (64*1024*1024) /* initial data size limit */ #endif #ifndef MAXDSIZ #define MAXDSIZ (1024*1024*1024) /* max data size */ #endif #ifndef DFLSSIZ #define DFLSSIZ (4*1024*1024) /* initial stack size limit */ #endif #ifndef MAXSSIZ #define MAXSSIZ (32*1024*1024) /* max stack size */ #endif /* I386 has a line where all code is executable: 0 - I386_MAX_EXE_ADDR */ #define I386_MAX_EXE_ADDR 0x20000000 /* exec line */ /* * Size of shared memory map */ #ifndef SHMMAXPGS #define SHMMAXPGS 8192 #endif /* * Size of User Raw I/O map */ #define USRIOSIZE 300 /* XXX Compatibility */ #define APTDPTDI PDSLOT_APTE #define PTDPTDI PDSLOT_PTE /* user/kernel map constants */ #define VM_MIN_ADDRESS ((vaddr_t)0) #define VM_MAXUSER_ADDRESS ((vaddr_t)((PTDPTDI<