1 /*
2  * Copyright (c) 2000-2018 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
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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,
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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
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20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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27  */
28 /*
29  * @OSF_COPYRIGHT@
30  *
31  */
32 #ifndef _MACH_VM_TYPES_H_
33 #define _MACH_VM_TYPES_H_
34 
35 #include <mach/port.h>
36 #include <mach/machine/vm_types.h>
37 
38 #include <stdint.h>
39 
40 typedef vm_offset_t             pointer_t;
41 typedef vm_offset_t             vm_address_t;
42 
43 /*
44  * We use addr64_t for 64-bit addresses that are used on both
45  * 32 and 64-bit machines.  On PPC, they are passed and returned as
46  * two adjacent 32-bit GPRs.  We use addr64_t in places where
47  * common code must be useable both on 32 and 64-bit machines.
48  */
49 typedef uint64_t addr64_t;              /* Basic effective address */
50 
51 /*
52  * We use reg64_t for addresses that are 32 bits on a 32-bit
53  * machine, and 64 bits on a 64-bit machine, but are always
54  * passed and returned in a single GPR on PPC.  This type
55  * cannot be used in generic 32-bit c, since on a 64-bit
56  * machine the upper half of the register will be ignored
57  * by the c compiler in 32-bit mode.  In c, we can only use the
58  * type in prototypes of functions that are written in and called
59  * from assembly language.  This type is basically a comment.
60  */
61 typedef uint32_t        reg64_t;
62 
63 /*
64  * To minimize the use of 64-bit fields, we keep some physical
65  * addresses (that are page aligned) as 32-bit page numbers.
66  * This limits the physical address space to 16TB of RAM.
67  */
68 typedef uint32_t ppnum_t;               /* Physical page number */
69 #define PPNUM_MAX UINT32_MAX
70 
71 
72 
73 typedef mach_port_t             vm_map_t;
74 
75 
76 #define VM_MAP_NULL             ((vm_map_t) 0)
77 
78 /*
79  * Evolving definitions, likely to change.
80  */
81 
82 typedef uint64_t                vm_object_offset_t;
83 typedef uint64_t                vm_object_size_t;
84 
85 
86 
87 
88 typedef mach_port_t             upl_t;
89 typedef mach_port_t             vm_named_entry_t;
90 
91 
92 #define UPL_NULL                ((upl_t) 0)
93 #define VM_NAMED_ENTRY_NULL     ((vm_named_entry_t) 0)
94 
95 #endif  /* _MACH_VM_TYPES_H_ */