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1/*
2 * Copyright (c) 2000-2012 Apple 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#if defined (__i386__) || defined (__x86_64__)
94
95#if !defined(KERNEL) && !defined(__ASSEMBLER__)
96
97#include <mach/vm_page_size.h>
98#endif
99
100#define BYTE_SIZE 8 /* byte size in bits */
101
102#define I386_PGBYTES 4096 /* bytes per 80386 page */
103#define I386_PGSHIFT 12 /* bitshift for pages */
104
105
106#if !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || (__MAC_OS_X_VERSION_MIN_REQUIRED < 101600)
107#define PAGE_SHIFT I386_PGSHIFT
108#define PAGE_SIZE I386_PGBYTES
109#define PAGE_MASK (PAGE_SIZE-1)
110#else /* !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || (__MAC_OS_X_VERSION_MIN_REQUIRED < 101600) */
111#define PAGE_SHIFT vm_page_shift
112#define PAGE_SIZE vm_page_size
113#define PAGE_MASK vm_page_mask
114#endif /* !defined(__MAC_OS_X_VERSION_MIN_REQUIRED) || (__MAC_OS_X_VERSION_MIN_REQUIRED < 101600) */
115
116#define PAGE_MAX_SHIFT 14
117#define PAGE_MAX_SIZE (1 << PAGE_MAX_SHIFT)
118#define PAGE_MAX_MASK (PAGE_MAX_SIZE-1)
119
120#define PAGE_MIN_SHIFT 12
121#define PAGE_MIN_SIZE (1 << PAGE_MIN_SHIFT)
122#define PAGE_MIN_MASK (PAGE_MIN_SIZE-1)
123
124
125#define VM_MIN_ADDRESS64 ((user_addr_t) 0x0000000000000000ULL)
126/*
127 * Default top of user stack, grows down from here.
128 * Address chosen to be 1G (3rd level page table entry) below SHARED_REGION_BASE_X86_64
129 * minus additional 1Meg (1/2 1st level page table coverage) to allow a redzone after it.
130 */
131#define VM_USRSTACK64 ((user_addr_t) (0x00007FF7C0000000ull - (1024 * 1024)))
132
133/*
134 * XXX TODO: Obsolete?
135 */
136#define VM_DYLD64 ((user_addr_t) 0x00007FFF5FC00000ULL)
137#define VM_LIB64_SHR_DATA ((user_addr_t) 0x00007FFF60000000ULL)
138#define VM_LIB64_SHR_TEXT ((user_addr_t) 0x00007FFF80000000ULL)
139/*
140 * the end of the usable user address space , for now about 47 bits.
141 * the 64 bit commpage is past the end of this
142 */
143#define VM_MAX_PAGE_ADDRESS ((user_addr_t) 0x00007FFFFFE00000ULL)
144/*
145 * canonical end of user address space for limits checking
146 */
147#define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL)
148
149
150/* system-wide values */
151#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0)
152#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS)
153
154/* process-relative values (all 32-bit legacy only for now) */
155#define VM_MIN_ADDRESS ((vm_offset_t) 0)
156#define VM_USRSTACK32 ((vm_offset_t) 0xC0000000) /* ASLR slides stack down by up to 1 MB */
157#define VM_MAX_ADDRESS ((vm_offset_t) 0xFFE00000)
158
159
160
161#endif /* defined (__i386__) || defined (__x86_64__) */
162
163#endif /* _MACH_I386_VM_PARAM_H_ */