1 | /* |
2 | * Copyright (c) 2000-2010 Apple Inc. |
3 | * All rights reserved. |
4 | */ |
5 | |
6 | #ifndef _KERNEL_STDINT_H_ |
7 | #define _KERNEL_STDINT_H_ |
8 | |
9 | #ifndef KERNEL |
10 | /* For user-space code that may include this header */ |
11 | #include_next <stdint.h> |
12 | #else /* KERNEL */ |
13 | |
14 | #include <machine/types.h> |
15 | |
16 | #if __LP64__ |
17 | #define __WORDSIZE 64 |
18 | #else |
19 | #define __WORDSIZE 32 |
20 | #endif |
21 | |
22 | /* from ISO/IEC 988:1999 spec */ |
23 | |
24 | /* 7.18.1.1 Exact-width integer types */ |
25 | /* int8_t is defined in <machine/types.h> */ |
26 | /* int16_t is defined in <machine/types.h> */ |
27 | /* int32_t is defined in <machine/types.h> */ |
28 | /* int64_t is defined in <machine/types.h> */ |
29 | typedef u_int8_t uint8_t; /* u_int8_t is defined in <machine/types.h> */ |
30 | typedef u_int16_t uint16_t; /* u_int16_t is defined in <machine/types.h> */ |
31 | typedef u_int32_t uint32_t; /* u_int32_t is defined in <machine/types.h> */ |
32 | typedef u_int64_t uint64_t; /* u_int64_t is defined in <machine/types.h> */ |
33 | |
34 | |
35 | /* 7.18.1.2 Minimum-width integer types */ |
36 | typedef int8_t int_least8_t; |
37 | typedef int16_t int_least16_t; |
38 | typedef int32_t int_least32_t; |
39 | typedef int64_t int_least64_t; |
40 | typedef uint8_t uint_least8_t; |
41 | typedef uint16_t uint_least16_t; |
42 | typedef uint32_t uint_least32_t; |
43 | typedef uint64_t uint_least64_t; |
44 | |
45 | |
46 | /* 7.18.1.3 Fastest-width integer types */ |
47 | typedef int8_t int_fast8_t; |
48 | typedef int16_t int_fast16_t; |
49 | typedef int32_t int_fast32_t; |
50 | typedef int64_t int_fast64_t; |
51 | typedef uint8_t uint_fast8_t; |
52 | typedef uint16_t uint_fast16_t; |
53 | typedef uint32_t uint_fast32_t; |
54 | typedef uint64_t uint_fast64_t; |
55 | |
56 | |
57 | /* 7.18.1.4 Integer types capable of holding object pointers */ |
58 | /* intptr_t is defined in <machine/types.h> */ |
59 | /* uintptr_t is defined in <machine/types.h> */ |
60 | |
61 | |
62 | /* 7.18.1.5 Greatest-width integer types */ |
63 | typedef long long intmax_t; |
64 | typedef unsigned long long uintmax_t; |
65 | |
66 | /* 7.18.2 Limits of specified-width integer types: |
67 | * These #defines specify the minimum and maximum limits |
68 | * of each of the types declared above. |
69 | */ |
70 | |
71 | |
72 | /* 7.18.2.1 Limits of exact-width integer types */ |
73 | #define INT8_MAX 127 |
74 | #define INT16_MAX 32767 |
75 | #define INT32_MAX 2147483647 |
76 | #define INT64_MAX 9223372036854775807LL |
77 | |
78 | #define INT8_MIN -128 |
79 | #define INT16_MIN -32768 |
80 | /* |
81 | Note: the literal "most negative int" cannot be written in C -- |
82 | the rules in the standard (section 6.4.4.1 in C99) will give it |
83 | an unsigned type, so INT32_MIN (and the most negative member of |
84 | any larger signed type) must be written via a constant expression. |
85 | */ |
86 | #define INT32_MIN (-INT32_MAX-1) |
87 | #define INT64_MIN (-INT64_MAX-1) |
88 | |
89 | #define UINT8_MAX 255 |
90 | #define UINT16_MAX 65535 |
91 | #define UINT32_MAX 4294967295U |
92 | #define UINT64_MAX 18446744073709551615ULL |
93 | |
94 | /* 7.18.2.2 Limits of minimum-width integer types */ |
95 | #define INT_LEAST8_MIN INT8_MIN |
96 | #define INT_LEAST16_MIN INT16_MIN |
97 | #define INT_LEAST32_MIN INT32_MIN |
98 | #define INT_LEAST64_MIN INT64_MIN |
99 | |
100 | #define INT_LEAST8_MAX INT8_MAX |
101 | #define INT_LEAST16_MAX INT16_MAX |
102 | #define INT_LEAST32_MAX INT32_MAX |
103 | #define INT_LEAST64_MAX INT64_MAX |
104 | |
105 | #define UINT_LEAST8_MAX UINT8_MAX |
106 | #define UINT_LEAST16_MAX UINT16_MAX |
107 | #define UINT_LEAST32_MAX UINT32_MAX |
108 | #define UINT_LEAST64_MAX UINT64_MAX |
109 | |
110 | /* 7.18.2.3 Limits of fastest minimum-width integer types */ |
111 | #define INT_FAST8_MIN INT8_MIN |
112 | #define INT_FAST16_MIN INT16_MIN |
113 | #define INT_FAST32_MIN INT32_MIN |
114 | #define INT_FAST64_MIN INT64_MIN |
115 | |
116 | #define INT_FAST8_MAX INT8_MAX |
117 | #define INT_FAST16_MAX INT16_MAX |
118 | #define INT_FAST32_MAX INT32_MAX |
119 | #define INT_FAST64_MAX INT64_MAX |
120 | |
121 | #define UINT_FAST8_MAX UINT8_MAX |
122 | #define UINT_FAST16_MAX UINT16_MAX |
123 | #define UINT_FAST32_MAX UINT32_MAX |
124 | #define UINT_FAST64_MAX UINT64_MAX |
125 | |
126 | /* 7.18.2.4 Limits of integer types capable of holding object pointers */ |
127 | |
128 | #if __WORDSIZE == 64 |
129 | #define INTPTR_MIN INT64_MIN |
130 | #define INTPTR_MAX INT64_MAX |
131 | #else |
132 | #define INTPTR_MIN INT32_MIN |
133 | #define INTPTR_MAX INT32_MAX |
134 | #endif |
135 | |
136 | #if __WORDSIZE == 64 |
137 | #define UINTPTR_MAX UINT64_MAX |
138 | #else |
139 | #define UINTPTR_MAX UINT32_MAX |
140 | #endif |
141 | |
142 | /* 7.18.2.5 Limits of greatest-width integer types */ |
143 | #define INTMAX_MIN INT64_MIN |
144 | #define INTMAX_MAX INT64_MAX |
145 | |
146 | #define UINTMAX_MAX UINT64_MAX |
147 | |
148 | /* 7.18.3 "Other" */ |
149 | #if __WORDSIZE == 64 |
150 | #define PTRDIFF_MIN INT64_MIN |
151 | #define PTRDIFF_MAX INT64_MAX |
152 | #else |
153 | #define PTRDIFF_MIN INT32_MIN |
154 | #define PTRDIFF_MAX INT32_MAX |
155 | #endif |
156 | |
157 | /* We have no sig_atomic_t yet, so no SIG_ATOMIC_{MIN,MAX}. |
158 | Should end up being {-127,127} or {0,255} ... or bigger. |
159 | My bet would be on one of {U}INT32_{MIN,MAX}. */ |
160 | |
161 | #if __WORDSIZE == 64 |
162 | #define SIZE_MAX UINT64_MAX |
163 | #else |
164 | #define SIZE_MAX UINT32_MAX |
165 | #endif |
166 | |
167 | #if defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1 |
168 | #define RSIZE_MAX (SIZE_MAX >> 1) |
169 | #endif |
170 | |
171 | #ifndef WCHAR_MAX |
172 | # ifdef __WCHAR_MAX__ |
173 | # define WCHAR_MAX __WCHAR_MAX__ |
174 | # else |
175 | # define WCHAR_MAX 0x7fffffff |
176 | # endif |
177 | #endif |
178 | |
179 | /* WCHAR_MIN should be 0 if wchar_t is an unsigned type and |
180 | (-WCHAR_MAX-1) if wchar_t is a signed type. Unfortunately, |
181 | it turns out that -fshort-wchar changes the signedness of |
182 | the type. */ |
183 | #ifndef WCHAR_MIN |
184 | # if WCHAR_MAX == 0xffff |
185 | # define WCHAR_MIN 0 |
186 | # else |
187 | # define WCHAR_MIN (-WCHAR_MAX-1) |
188 | # endif |
189 | #endif |
190 | |
191 | #define WINT_MIN INT32_MIN |
192 | #define WINT_MAX INT32_MAX |
193 | |
194 | #define SIG_ATOMIC_MIN INT32_MIN |
195 | #define SIG_ATOMIC_MAX INT32_MAX |
196 | |
197 | /* 7.18.4 Macros for integer constants */ |
198 | #define INT8_C(v) (v) |
199 | #define INT16_C(v) (v) |
200 | #define INT32_C(v) (v) |
201 | #define INT64_C(v) (v ## LL) |
202 | |
203 | #define UINT8_C(v) (v ## U) |
204 | #define UINT16_C(v) (v ## U) |
205 | #define UINT32_C(v) (v ## U) |
206 | #define UINT64_C(v) (v ## ULL) |
207 | |
208 | #define INTMAX_C(v) (v ## LL) |
209 | #define UINTMAX_C(v) (v ## ULL) |
210 | |
211 | #endif /* KERNEL */ |
212 | |
213 | #endif /* _KERNEL_STDINT_H_ */ |
214 | |