blob: cb29fc3333a3d9fb51b0da5ef183a98ffb3411ee (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/**
** @file defs.h
**
** @author Warren R. Carithers
**
** @brief Common definitions.
**
** This header file defines things which are neede by all
** parts of the system (OS and user levels).
**
** Things which are kernel-specific go in the kdefs.h file;
** things which are user-specific go in the udefs.h file.
** The correct one of these will be automatically included
** at the end of this file.
*/
#ifndef DEFS_H_
#define DEFS_H_
/*
** General (C and/or assembly) definitions
**
** This section of the header file contains definitions that can be
** used in either C or assembly-language source code.
*/
// NULL pointer value
//
// we define this the traditional way so that
// it's usable from both C and assembly
#define NULL 0
// predefined i/o channels
#define CHAN_CIO 0
#define CHAN_SIO 1
// maximum allowable number of command-line arguments
#define MAX_ARGS 10
// sizes of various things
#define NUM_1KB 0x00000400 // 2^10
#define NUM_4KB 0x00001000 // 2^12
#define NUM_1MB 0x00100000 // 2^20
#define NUM_4MB 0x00400000 // 2^22
#define NUM_1GB 0x40000000 // 2^30
#define NUM_2GB 0x80000000 // 2^31
#define NUM_3GB 0xc0000000
#ifndef ASM_SRC
/*
** Start of C-only definitions
**
** Anything that should not be visible to something other than
** the C compiler should be put here.
*/
/*
** System error codes
**
** These can be returned to both system functions
** and to user system calls.
*/
// success!
#define SUCCESS (0)
#define E_SUCCESS SUCCESS
// generic "something went wrong"
#define E_FAILURE (-1)
// specific failure reasons
#define E_BAD_PARAM (-2)
#define E_BAD_CHAN (-3)
#define E_NO_CHILDREN (-4)
#define E_NO_MEMORY (-5)
#define E_NOT_FOUND (-6)
#define E_NO_PROCS (-7)
/*
** These error codes are internal to the OS.
*/
#define E_EMPTY_QUEUE (-100)
#define E_NO_PCBS (-101)
#define E_NO_PTE (-102)
#define E_LOAD_LIMIT (-103)
// exit status values
#define EXIT_SUCCESS (0)
#define EXIT_FAILURE (-1)
#define EXIT_KILLED (-101)
#define EXIT_BAD_SYSCALL (-102)
/*
** Process priority values
*/
enum priority_e {
PRIO_HIGH,
PRIO_STD,
PRIO_LOW,
PRIO_DEFERRED
// sentinel
,
N_PRIOS
};
// halves of various data sizes
#define UI16_UPPER 0xff00
#define UI16_LOWER 0x00ff
#define UI32_UPPER 0xffff0000
#define UI32_LOWER 0x0000ffff
#define UI64_UPPER 0xffffffff00000000LL
#define UI64_LOWER 0x00000000ffffffffLL
// Simple conversion pseudo-functions usable by everyone
// convert seconds to ms
#define SEC_TO_MS(n) ((n) * 1000)
#endif /* !ASM_SRC */
/*
** Level-specific definitions
*/
#ifdef KERNEL_SRC
#include <kdefs.h>
#else
#include <udefs.h>
#endif /* KERNEL_SRC */
#endif
|
