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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
|
/* vi: set sw=4 ts=4: */
/*
Copyright 2006, Bernhard Fischer
Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
#ifndef __PLATFORM_H
#define __PLATFORM_H 1
/* Convenience macros to test the version of gcc. */
#undef __GNUC_PREREQ
#if defined __GNUC__ && defined __GNUC_MINOR__
# define __GNUC_PREREQ(maj, min) \
((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
#else
# define __GNUC_PREREQ(maj, min) 0
#endif
/* __restrict is known in EGCS 1.2 and above. */
#if !__GNUC_PREREQ (2,92)
# ifndef __restrict
# define __restrict /* Ignore */
# endif
#endif
/* Define macros for some gcc attributes. This permits us to use the
macros freely, and know that they will come into play for the
version of gcc in which they are supported. */
#if !__GNUC_PREREQ (2,7)
# ifndef __attribute__
# define __attribute__(x)
# endif
#endif
#undef inline
#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
/* it's a keyword */
#else
# if __GNUC_PREREQ (2,7)
# define inline __inline__
# else
# define inline
# endif
#endif
#ifndef __const
# define __const const
#endif
# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
# define ATTRIBUTE_PACKED __attribute__ ((__packed__))
# define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))
# if __GNUC_PREREQ (3,0)
# define ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) inline
# else
# define ATTRIBUTE_ALWAYS_INLINE inline
# endif
/* -fwhole-program makes all symbols local. The attribute externally_visible
forces a symbol global. */
# if __GNUC_PREREQ (4,1)
# define ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((__externally_visible__))
# else
# define ATTRIBUTE_EXTERNALLY_VISIBLE
# endif /* GNUC >= 4.1 */
/* We use __extension__ in some places to suppress -pedantic warnings
about GCC extensions. This feature didn't work properly before
gcc 2.8. */
#if !__GNUC_PREREQ (2,8)
# ifndef __extension__
# define __extension__
# endif
#endif
/* gcc-2.95 had no va_copy but only __va_copy. */
#if !__GNUC_PREREQ (3,0)
# include <stdarg.h>
# if !defined va_copy && defined __va_copy
# define va_copy(d,s) __va_copy((d),(s))
# endif
#endif
/* ---- Endian Detection ------------------------------------ */
#if (defined __digital__ && defined __unix__)
# include <sex.h>
# define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN)
# define __BYTE_ORDER BYTE_ORDER
#elif !defined __APPLE__
# include <byteswap.h>
# include <endian.h>
#endif
#ifdef __BIG_ENDIAN__
# define BB_BIG_ENDIAN 1
# define BB_LITTLE_ENDIAN 0
#elif __BYTE_ORDER == __BIG_ENDIAN
# define BB_BIG_ENDIAN 1
# define BB_LITTLE_ENDIAN 0
#else
# define BB_BIG_ENDIAN 0
# define BB_LITTLE_ENDIAN 1
#endif
#if BB_BIG_ENDIAN
#define SWAP_BE16(x) (x)
#define SWAP_BE32(x) (x)
#define SWAP_BE64(x) (x)
#define SWAP_LE16(x) bswap_16(x)
#define SWAP_LE32(x) bswap_32(x)
#define SWAP_LE64(x) bswap_64(x)
#else
#define SWAP_BE16(x) bswap_16(x)
#define SWAP_BE32(x) bswap_32(x)
#define SWAP_BE64(x) bswap_64(x)
#define SWAP_LE16(x) (x)
#define SWAP_LE32(x) (x)
#define SWAP_LE64(x) (x)
#endif
/* ---- Networking ------------------------------------------ */
#ifndef __APPLE__
# include <arpa/inet.h>
#else
# include <netinet/in.h>
#endif
#ifndef __socklen_t_defined
typedef int socklen_t;
#endif
/* ---- Compiler dependent settings ------------------------- */
#ifndef __GNUC__
#if defined __INTEL_COMPILER
__extension__ typedef __signed__ long long __s64;
__extension__ typedef unsigned long long __u64;
#endif /* __INTEL_COMPILER */
#endif /* ifndef __GNUC__ */
#if (defined __digital__ && defined __unix__)
# undef HAVE_MNTENT_H
#else
# define HAVE_MNTENT_H 1
#endif /* ___digital__ && __unix__ */
/*----- Kernel versioning ------------------------------------*/
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
/* ---- miscellaneous --------------------------------------- */
#if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \
!defined(__dietlibc__) && \
!defined(_NEWLIB_VERSION) && \
!(defined __digital__ && defined __unix__)
# error "Sorry, this libc version is not supported :("
#endif
// Don't perpetuate e2fsck crap into the headers. Clean up e2fsck instead.
#if defined __GLIBC__ || defined __UCLIBC__ \
|| defined __dietlibc__ || defined _NEWLIB_VERSION
#include <features.h>
#define HAVE_FEATURES_H
#include <stdint.h>
#define HAVE_STDINT_H
#else
/* Largest integral types. */
#if __BIG_ENDIAN__
typedef long int intmax_t;
typedef unsigned long int uintmax_t;
#else
__extension__
typedef long long int intmax_t;
__extension__
typedef unsigned long long int uintmax_t;
#endif
#endif
/* uclibc does not implement daemon() for no-mmu systems.
* For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
* For earlier versions there is no reliable way to check if we are building
* for a mmu-less system; the user should pass EXTRA_CFLAGS="-DBB_NOMMU"
* on his own.
*/
#if defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
__UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__
#define BB_NOMMU
#endif
/* Platforms that haven't got dprintf need to implement fdprintf() in
* libbb. This would require a platform.c. It's not going to be cleaned
* out of the tree, so stop saying it should be. */
#if !defined(__dietlibc__)
/* Needed for: glibc */
/* Not needed for: dietlibc */
/* Others: ?? (add as needed) */
#define fdprintf dprintf
#endif
#if defined(__dietlibc__)
static ATTRIBUTE_ALWAYS_INLINE char* strchrnul(const char *s, char c) {
while (*s && *s != c) ++s;
return (char*)s;
}
#endif
/* Don't use lchown with glibc older than 2.1.x ... uC-libc lacks it */
#if (defined __GLIBC__ && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1) || \
defined __UC_LIBC__
# define lchown chown
#endif
/* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */
/* FIXME: fix tar.c! */
#ifndef FNM_LEADING_DIR
#define FNM_LEADING_DIR 0
#endif
#if (defined __digital__ && defined __unix__)
#include <standards.h>
#define HAVE_STANDARDS_H
#include <inttypes.h>
#define HAVE_INTTYPES_H
#define PRIu32 "u"
/* use legacy setpgrp(pidt_,pid_t) for now. move to platform.c */
#define bb_setpgrp do { pid_t __me = getpid(); setpgrp(__me,__me); } while (0)
#if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
#define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
#endif
#if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
#define ADJ_FREQUENCY MOD_FREQUENCY
#endif
#if !defined ADJ_TIMECONST && defined MOD_TIMECONST
#define ADJ_TIMECONST MOD_TIMECONST
#endif
#if !defined ADJ_TICK && defined MOD_CLKB
#define ADJ_TICK MOD_CLKB
#endif
#else
#define bb_setpgrp setpgrp()
#endif
#if defined(__linux__)
#include <sys/mount.h>
// Make sure we have all the new mount flags we actually try to use.
#ifndef MS_BIND
#define MS_BIND (1<<12)
#endif
#ifndef MS_MOVE
#define MS_MOVE (1<<13)
#endif
#ifndef MS_RECURSIVE
#define MS_RECURSIVE (1<<14)
#endif
#ifndef MS_SILENT
#define MS_SILENT (1<<15)
#endif
// The shared subtree stuff, which went in around 2.6.15
#ifndef MS_UNBINDABLE
#define MS_UNBINDABLE (1<<17)
#endif
#ifndef MS_PRIVATE
#define MS_PRIVATE (1<<18)
#endif
#ifndef MS_SLAVE
#define MS_SLAVE (1<<19)
#endif
#ifndef MS_SHARED
#define MS_SHARED (1<<20)
#endif
#if !defined(BLKSSZGET)
#define BLKSSZGET _IO(0x12, 104)
#endif
#if !defined(BLKGETSIZE64)
#define BLKGETSIZE64 _IOR(0x12,114,size_t)
#endif
#endif
#endif /* platform.h */
|
