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3 | *␊ |
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28 | /*␊ |
29 | * @OSF_COPYRIGHT@␊ |
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31 | /* ␊ |
32 | * Mach Operating System␊ |
33 | * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University␊ |
34 | * All Rights Reserved.␊ |
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41 | * ␊ |
42 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"␊ |
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48 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU␊ |
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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␊ |
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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 | *␊ |
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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 | |