| 1 | /*␊ |
| 2 | * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. The rights granted to you under the License␊ |
| 10 | * may not be used to create, or enable the creation or redistribution of,␊ |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to␊ |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any␊ |
| 13 | * terms of an Apple operating system software license agreement.␊ |
| 14 | * ␊ |
| 15 | * Please obtain a copy of the License at␊ |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file.␊ |
| 17 | * ␊ |
| 18 | * The Original Code and all software distributed under the License are␊ |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 23 | * Please see the License for the specific language governing rights and␊ |
| 24 | * limitations under the License.␊ |
| 25 | * ␊ |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
| 27 | */␊ |
| 28 | /*␊ |
| 29 | * @OSF_COPYRIGHT@␊ |
| 30 | */␊ |
| 31 | /* ␊ |
| 32 | * Mach Operating System␊ |
| 33 | * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University␊ |
| 34 | * All Rights Reserved.␊ |
| 35 | * ␊ |
| 36 | * Permission to use, copy, modify and distribute this software and its␊ |
| 37 | * documentation is hereby granted, provided that both the copyright␊ |
| 38 | * notice and this permission notice appear in all copies of the␊ |
| 39 | * software, derivative works or modified versions, and any portions␊ |
| 40 | * thereof, and that both notices appear in supporting documentation.␊ |
| 41 | * ␊ |
| 42 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"␊ |
| 43 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR␊ |
| 44 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.␊ |
| 45 | * ␊ |
| 46 | * Carnegie Mellon requests users of this software to return to␊ |
| 47 | * ␊ |
| 48 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU␊ |
| 49 | * School of Computer Science␊ |
| 50 | * Carnegie Mellon University␊ |
| 51 | * Pittsburgh PA 15213-3890␊ |
| 52 | * ␊ |
| 53 | * any improvements or extensions that they make and grant Carnegie Mellon␊ |
| 54 | * the rights to redistribute these changes.␊ |
| 55 | */␊ |
| 56 | ␊ |
| 57 | /* ␊ |
| 58 | * Copyright (c) 1994 The University of Utah and␊ |
| 59 | * the Computer Systems Laboratory at the University of Utah (CSL).␊ |
| 60 | * All rights reserved.␊ |
| 61 | *␊ |
| 62 | * Permission to use, copy, modify and distribute this software is hereby␊ |
| 63 | * granted provided that (1) source code retains these copyright, permission,␊ |
| 64 | * and disclaimer notices, and (2) redistributions including binaries␊ |
| 65 | * reproduce the notices in supporting documentation, and (3) all advertising␊ |
| 66 | * materials mentioning features or use of this software display the following␊ |
| 67 | * acknowledgement: ``This product includes software developed by the␊ |
| 68 | * Computer Systems Laboratory at the University of Utah.''␊ |
| 69 | *␊ |
| 70 | * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS␊ |
| 71 | * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF␊ |
| 72 | * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.␊ |
| 73 | *␊ |
| 74 | * CSL requests users of this software to return to csl-dist@cs.utah.edu any␊ |
| 75 | * improvements that they make and grant CSL redistribution rights.␊ |
| 76 | *␊ |
| 77 | */␊ |
| 78 | ␊ |
| 79 | /*␊ |
| 80 | *␉File:␉vm_param.h␊ |
| 81 | *␉Author:␉Avadis Tevanian, Jr.␊ |
| 82 | *␉Date:␉1985␊ |
| 83 | *␊ |
| 84 | *␉I386 machine dependent virtual memory parameters.␊ |
| 85 | *␉Most of the declarations are preceeded by I386_ (or i386_)␊ |
| 86 | *␉which is OK because only I386 specific code will be using␊ |
| 87 | *␉them.␊ |
| 88 | */␊ |
| 89 | ␊ |
| 90 | #ifndef␉_MACH_I386_VM_PARAM_H_␊ |
| 91 | #define _MACH_I386_VM_PARAM_H_␊ |
| 92 | ␊ |
| 93 | #define BYTE_SIZE␉␉8␉␉/* byte size in bits */␊ |
| 94 | ␊ |
| 95 | #define I386_PGBYTES␉␉4096␉␉/* bytes per 80386 page */␊ |
| 96 | #define I386_PGSHIFT␉␉12␉␉/* bitshift for pages */␊ |
| 97 | ␊ |
| 98 | #define␉PAGE_SIZE␉␉I386_PGBYTES␊ |
| 99 | #define␉PAGE_SHIFT␉␉I386_PGSHIFT␊ |
| 100 | #define␉PAGE_MASK␉␉(PAGE_SIZE - 1)␊ |
| 101 | ␊ |
| 102 | #define I386_LPGBYTES␉␉2*1024*1024␉/* bytes per large page */␊ |
| 103 | #define I386_LPGSHIFT␉␉21␉␉/* bitshift for large pages */␊ |
| 104 | #define I386_LPGMASK␉␉(I386_LPGBYTES-1)␊ |
| 105 | ␊ |
| 106 | /*␊ |
| 107 | *␉Convert bytes to pages and convert pages to bytes.␊ |
| 108 | *␉No rounding is used.␊ |
| 109 | */␊ |
| 110 | ␊ |
| 111 | #define i386_btop(x)␉␉((ppnum_t)((x) >> I386_PGSHIFT))␊ |
| 112 | #define machine_btop(x)␉␉i386_btop(x)␊ |
| 113 | #define i386_ptob(x)␉␉(((pmap_paddr_t)(x)) << I386_PGSHIFT)␊ |
| 114 | ␊ |
| 115 | /*␊ |
| 116 | *␉Round off or truncate to the nearest page. These will work␊ |
| 117 | *␉for either addresses or counts. (i.e. 1 byte rounds to 1 page␊ |
| 118 | *␉bytes.␊ |
| 119 | */␊ |
| 120 | ␊ |
| 121 | #define i386_round_page(x)␉((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \␊ |
| 122 | ␉␉␉␉␉~(I386_PGBYTES-1))␊ |
| 123 | #define i386_trunc_page(x)␉(((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1))␊ |
| 124 | ␊ |
| 125 | ␊ |
| 126 | ␊ |
| 127 | #define VM_MIN_ADDRESS64␉((user_addr_t) 0x0000000000000000ULL)␊ |
| 128 | /*␊ |
| 129 | * default top of user stack... it grows down from here␊ |
| 130 | */␊ |
| 131 | #define VM_USRSTACK64␉␉((user_addr_t) 0x00007FFF5FC00000ULL)␊ |
| 132 | #define VM_DYLD64␉␉((user_addr_t) 0x00007FFF5FC00000ULL)␊ |
| 133 | #define VM_LIB64_SHR_DATA␉((user_addr_t) 0x00007FFF60000000ULL)␊ |
| 134 | #define VM_LIB64_SHR_TEXT␉((user_addr_t) 0x00007FFF80000000ULL)␊ |
| 135 | /*␊ |
| 136 | * the end of the usable user address space , for now about 47 bits.␊ |
| 137 | * the 64 bit commpage is past the end of this␊ |
| 138 | */␊ |
| 139 | #define VM_MAX_PAGE_ADDRESS␉((user_addr_t) 0x00007FFFFFE00000ULL)␊ |
| 140 | /*␊ |
| 141 | * canonical end of user address space for limits checking␊ |
| 142 | */␊ |
| 143 | #define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL)␊ |
| 144 | ␊ |
| 145 | ␊ |
| 146 | /* system-wide values */␊ |
| 147 | #define MACH_VM_MIN_ADDRESS␉␉((mach_vm_offset_t) 0)␊ |
| 148 | #define MACH_VM_MAX_ADDRESS␉␉((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS)␊ |
| 149 | ␊ |
| 150 | /* process-relative values (all 32-bit legacy only for now) */␊ |
| 151 | #define VM_MIN_ADDRESS␉␉((vm_offset_t) 0)␊ |
| 152 | #define VM_USRSTACK32␉␉((vm_offset_t) 0xC0000000)␊ |
| 153 | #define VM_MAX_ADDRESS␉␉((vm_offset_t) 0xFFE00000)␊ |
| 154 | ␊ |
| 155 | ␊ |
| 156 | ␊ |
| 157 | #endif␉/* _MACH_I386_VM_PARAM_H_ */␊ |
| 158 | |
