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/*
* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* Copyright (c) 1994 The University of Utah and
* the Computer Systems Laboratory at the University of Utah (CSL).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software is hereby
* granted provided that (1) source code retains these copyright, permission,
* and disclaimer notices, and (2) redistributions including binaries
* reproduce the notices in supporting documentation, and (3) all advertising
* materials mentioning features or use of this software display the following
* acknowledgement: ``This product includes software developed by the
* Computer Systems Laboratory at the University of Utah.''
*
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
* improvements that they make and grant CSL redistribution rights.
*
*/
/*
* File: vm_param.h
* Author: Avadis Tevanian, Jr.
* Date: 1985
*
* I386 machine dependent virtual memory parameters.
* Most of the declarations are preceeded by I386_ (or i386_)
* which is OK because only I386 specific code will be using
* them.
*/
#ifndef _MACH_I386_VM_PARAM_H_
#define _MACH_I386_VM_PARAM_H_
#define BYTE_SIZE 8 /* byte size in bits */
#define I386_PGBYTES 4096 /* bytes per 80386 page */
#define I386_PGSHIFT 12 /* bitshift for pages */
#define PAGE_SIZE I386_PGBYTES
#define PAGE_SHIFT I386_PGSHIFT
#define PAGE_MASK (PAGE_SIZE - 1)
#define I386_LPGBYTES 2*1024*1024 /* bytes per large page */
#define I386_LPGSHIFT 21 /* bitshift for large pages */
#define I386_LPGMASK (I386_LPGBYTES-1)
/*
* Convert bytes to pages and convert pages to bytes.
* No rounding is used.
*/
#define i386_btop(x) ((ppnum_t)((x) >> I386_PGSHIFT))
#define machine_btop(x) i386_btop(x)
#define i386_ptob(x) (((pmap_paddr_t)(x)) << I386_PGSHIFT)
/*
* Round off or truncate to the nearest page. These will work
* for either addresses or counts. (i.e. 1 byte rounds to 1 page
* bytes.
*/
#define i386_round_page(x) ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \
~(I386_PGBYTES-1))
#define i386_trunc_page(x) (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1))
#define VM_MIN_ADDRESS64 ((user_addr_t) 0x0000000000000000ULL)
/*
* default top of user stack... it grows down from here
*/
#define VM_USRSTACK64 ((user_addr_t) 0x00007FFF5FC00000ULL)
#define VM_DYLD64 ((user_addr_t) 0x00007FFF5FC00000ULL)
#define VM_LIB64_SHR_DATA ((user_addr_t) 0x00007FFF60000000ULL)
#define VM_LIB64_SHR_TEXT ((user_addr_t) 0x00007FFF80000000ULL)
/*
* the end of the usable user address space , for now about 47 bits.
* the 64 bit commpage is past the end of this
*/
#define VM_MAX_PAGE_ADDRESS ((user_addr_t) 0x00007FFFFFE00000ULL)
/*
* canonical end of user address space for limits checking
*/
#define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL)
/* system-wide values */
#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0)
#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS)
/* process-relative values (all 32-bit legacy only for now) */
#define VM_MIN_ADDRESS ((vm_offset_t) 0)
#define VM_USRSTACK32 ((vm_offset_t) 0xC0000000)
#define VM_MAX_ADDRESS ((vm_offset_t) 0xFFE00000)
#endif /* _MACH_I386_VM_PARAM_H_ */
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