1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * Copyright 2006, Bernhard Reutner-Fischer
|
---|
4 | *
|
---|
5 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
---|
6 | */
|
---|
7 | #ifndef BB_PLATFORM_H
|
---|
8 | #define BB_PLATFORM_H 1
|
---|
9 |
|
---|
10 |
|
---|
11 | /* Convenience macros to test the version of gcc. */
|
---|
12 | #undef __GNUC_PREREQ
|
---|
13 | #if defined __GNUC__ && defined __GNUC_MINOR__
|
---|
14 | # define __GNUC_PREREQ(maj, min) \
|
---|
15 | ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
|
---|
16 | #else
|
---|
17 | # define __GNUC_PREREQ(maj, min) 0
|
---|
18 | #endif
|
---|
19 |
|
---|
20 | /* __restrict is known in EGCS 1.2 and above. */
|
---|
21 | #if !__GNUC_PREREQ(2,92)
|
---|
22 | # ifndef __restrict
|
---|
23 | # define __restrict
|
---|
24 | # endif
|
---|
25 | #endif
|
---|
26 |
|
---|
27 | #if !__GNUC_PREREQ(2,7)
|
---|
28 | # ifndef __attribute__
|
---|
29 | # define __attribute__(x)
|
---|
30 | # endif
|
---|
31 | #endif
|
---|
32 |
|
---|
33 | #undef inline
|
---|
34 | #if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
|
---|
35 | /* it's a keyword */
|
---|
36 | #elif __GNUC_PREREQ(2,7)
|
---|
37 | # define inline __inline__
|
---|
38 | #else
|
---|
39 | # define inline
|
---|
40 | #endif
|
---|
41 |
|
---|
42 | #ifndef __const
|
---|
43 | # define __const const
|
---|
44 | #endif
|
---|
45 |
|
---|
46 | #define UNUSED_PARAM __attribute__ ((__unused__))
|
---|
47 | #define NORETURN __attribute__ ((__noreturn__))
|
---|
48 | /* "The malloc attribute is used to tell the compiler that a function
|
---|
49 | * may be treated as if any non-NULL pointer it returns cannot alias
|
---|
50 | * any other pointer valid when the function returns. This will often
|
---|
51 | * improve optimization. Standard functions with this property include
|
---|
52 | * malloc and calloc. realloc-like functions have this property as long
|
---|
53 | * as the old pointer is never referred to (including comparing it
|
---|
54 | * to the new pointer) after the function returns a non-NULL value."
|
---|
55 | */
|
---|
56 | #define RETURNS_MALLOC __attribute__ ((malloc))
|
---|
57 | #define PACKED __attribute__ ((__packed__))
|
---|
58 | #define ALIGNED(m) __attribute__ ((__aligned__(m)))
|
---|
59 |
|
---|
60 | /* __NO_INLINE__: some gcc's do not honor inlining! :( */
|
---|
61 | #if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
|
---|
62 | # define ALWAYS_INLINE __attribute__ ((always_inline)) inline
|
---|
63 | /* I've seen a toolchain where I needed __noinline__ instead of noinline */
|
---|
64 | # define NOINLINE __attribute__((__noinline__))
|
---|
65 | # if !ENABLE_WERROR
|
---|
66 | # define DEPRECATED __attribute__ ((__deprecated__))
|
---|
67 | # define UNUSED_PARAM_RESULT __attribute__ ((warn_unused_result))
|
---|
68 | # else
|
---|
69 | # define DEPRECATED
|
---|
70 | # define UNUSED_PARAM_RESULT
|
---|
71 | # endif
|
---|
72 | #else
|
---|
73 | # define ALWAYS_INLINE inline
|
---|
74 | # define NOINLINE
|
---|
75 | # define DEPRECATED
|
---|
76 | # define UNUSED_PARAM_RESULT
|
---|
77 | #endif
|
---|
78 |
|
---|
79 | /* used by unit test machinery to run registration functions before calling main() */
|
---|
80 | #define INIT_FUNC __attribute__ ((constructor))
|
---|
81 |
|
---|
82 | /* -fwhole-program makes all symbols local. The attribute externally_visible
|
---|
83 | * forces a symbol global. */
|
---|
84 | #if __GNUC_PREREQ(4,1)
|
---|
85 | # define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
|
---|
86 | //__attribute__ ((__externally_visible__))
|
---|
87 | #else
|
---|
88 | # define EXTERNALLY_VISIBLE
|
---|
89 | #endif
|
---|
90 |
|
---|
91 | /* At 4.4 gcc become much more anal about this, need to use "aliased" types */
|
---|
92 | #if __GNUC_PREREQ(4,4)
|
---|
93 | # define FIX_ALIASING __attribute__((__may_alias__))
|
---|
94 | #else
|
---|
95 | # define FIX_ALIASING
|
---|
96 | #endif
|
---|
97 |
|
---|
98 | /* We use __extension__ in some places to suppress -pedantic warnings
|
---|
99 | * about GCC extensions. This feature didn't work properly before
|
---|
100 | * gcc 2.8. */
|
---|
101 | #if !__GNUC_PREREQ(2,8)
|
---|
102 | # ifndef __extension__
|
---|
103 | # define __extension__
|
---|
104 | # endif
|
---|
105 | #endif
|
---|
106 |
|
---|
107 | /* FAST_FUNC is a qualifier which (possibly) makes function call faster
|
---|
108 | * and/or smaller by using modified ABI. It is usually only needed
|
---|
109 | * on non-static, busybox internal functions. Recent versions of gcc
|
---|
110 | * optimize statics automatically. FAST_FUNC on static is required
|
---|
111 | * only if you need to match a function pointer's type */
|
---|
112 | #if __GNUC_PREREQ(3,0) && defined(i386) /* || defined(__x86_64__)? */
|
---|
113 | /* stdcall makes callee to pop arguments from stack, not caller */
|
---|
114 | # define FAST_FUNC __attribute__((regparm(3),stdcall))
|
---|
115 | /* #elif ... - add your favorite arch today! */
|
---|
116 | #else
|
---|
117 | # define FAST_FUNC
|
---|
118 | #endif
|
---|
119 |
|
---|
120 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */
|
---|
121 | /* (don't include system headers after this until corresponding pop!) */
|
---|
122 | #if __GNUC_PREREQ(4,1) && !defined(__CYGWIN__)
|
---|
123 | # define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
|
---|
124 | # define POP_SAVED_FUNCTION_VISIBILITY _Pragma("GCC visibility pop")
|
---|
125 | #else
|
---|
126 | # define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
|
---|
127 | # define POP_SAVED_FUNCTION_VISIBILITY
|
---|
128 | #endif
|
---|
129 |
|
---|
130 | /* gcc-2.95 had no va_copy but only __va_copy. */
|
---|
131 | #if !__GNUC_PREREQ(3,0)
|
---|
132 | # include <stdarg.h>
|
---|
133 | # if !defined va_copy && defined __va_copy
|
---|
134 | # define va_copy(d,s) __va_copy((d),(s))
|
---|
135 | # endif
|
---|
136 | #endif
|
---|
137 |
|
---|
138 |
|
---|
139 | /* ---- Endian Detection ------------------------------------ */
|
---|
140 |
|
---|
141 | #include <limits.h>
|
---|
142 | #if defined(__digital__) && defined(__unix__)
|
---|
143 | # include <sex.h>
|
---|
144 | #elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
|
---|
145 | || defined(__APPLE__)
|
---|
146 | # include <sys/resource.h> /* rlimit */
|
---|
147 | # include <machine/endian.h>
|
---|
148 | # define bswap_64 __bswap64
|
---|
149 | # define bswap_32 __bswap32
|
---|
150 | # define bswap_16 __bswap16
|
---|
151 | #else
|
---|
152 | # include <byteswap.h>
|
---|
153 | # include <endian.h>
|
---|
154 | #endif
|
---|
155 |
|
---|
156 | #if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN
|
---|
157 | # define BB_BIG_ENDIAN 1
|
---|
158 | # define BB_LITTLE_ENDIAN 0
|
---|
159 | #elif defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN
|
---|
160 | # define BB_BIG_ENDIAN 0
|
---|
161 | # define BB_LITTLE_ENDIAN 1
|
---|
162 | #elif defined(_BYTE_ORDER) && _BYTE_ORDER == _BIG_ENDIAN
|
---|
163 | # define BB_BIG_ENDIAN 1
|
---|
164 | # define BB_LITTLE_ENDIAN 0
|
---|
165 | #elif defined(_BYTE_ORDER) && _BYTE_ORDER == _LITTLE_ENDIAN
|
---|
166 | # define BB_BIG_ENDIAN 0
|
---|
167 | # define BB_LITTLE_ENDIAN 1
|
---|
168 | #elif defined(BYTE_ORDER) && BYTE_ORDER == BIG_ENDIAN
|
---|
169 | # define BB_BIG_ENDIAN 1
|
---|
170 | # define BB_LITTLE_ENDIAN 0
|
---|
171 | #elif defined(BYTE_ORDER) && BYTE_ORDER == LITTLE_ENDIAN
|
---|
172 | # define BB_BIG_ENDIAN 0
|
---|
173 | # define BB_LITTLE_ENDIAN 1
|
---|
174 | #elif defined(__386__)
|
---|
175 | # define BB_BIG_ENDIAN 0
|
---|
176 | # define BB_LITTLE_ENDIAN 1
|
---|
177 | #else
|
---|
178 | # error "Can't determine endianness"
|
---|
179 | #endif
|
---|
180 |
|
---|
181 | #if ULONG_MAX > 0xffffffff
|
---|
182 | # define bb_bswap_64(x) bswap_64(x)
|
---|
183 | #endif
|
---|
184 |
|
---|
185 | /* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */
|
---|
186 | #if BB_BIG_ENDIAN
|
---|
187 | # define SWAP_BE16(x) (x)
|
---|
188 | # define SWAP_BE32(x) (x)
|
---|
189 | # define SWAP_BE64(x) (x)
|
---|
190 | # define SWAP_LE16(x) bswap_16(x)
|
---|
191 | # define SWAP_LE32(x) bswap_32(x)
|
---|
192 | # define SWAP_LE64(x) bb_bswap_64(x)
|
---|
193 | # define IF_BIG_ENDIAN(...) __VA_ARGS__
|
---|
194 | # define IF_LITTLE_ENDIAN(...)
|
---|
195 | #else
|
---|
196 | # define SWAP_BE16(x) bswap_16(x)
|
---|
197 | # define SWAP_BE32(x) bswap_32(x)
|
---|
198 | # define SWAP_BE64(x) bb_bswap_64(x)
|
---|
199 | # define SWAP_LE16(x) (x)
|
---|
200 | # define SWAP_LE32(x) (x)
|
---|
201 | # define SWAP_LE64(x) (x)
|
---|
202 | # define IF_BIG_ENDIAN(...)
|
---|
203 | # define IF_LITTLE_ENDIAN(...) __VA_ARGS__
|
---|
204 | #endif
|
---|
205 |
|
---|
206 |
|
---|
207 | /* ---- Unaligned access ------------------------------------ */
|
---|
208 |
|
---|
209 | #include <stdint.h>
|
---|
210 | typedef int bb__aliased_int FIX_ALIASING;
|
---|
211 | typedef long bb__aliased_long FIX_ALIASING;
|
---|
212 | typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
|
---|
213 | typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
|
---|
214 | typedef uint64_t bb__aliased_uint64_t FIX_ALIASING;
|
---|
215 |
|
---|
216 | /* NB: unaligned parameter should be a pointer, aligned one -
|
---|
217 | * a lvalue. This makes it more likely to not swap them by mistake
|
---|
218 | */
|
---|
219 | #if defined(i386) || defined(__x86_64__) || defined(__powerpc__)
|
---|
220 | # define BB_UNALIGNED_MEMACCESS_OK 1
|
---|
221 | # define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
|
---|
222 | # define move_from_unaligned_long(v, longp) ((v) = *(bb__aliased_long*)(longp))
|
---|
223 | # define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
|
---|
224 | # define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
|
---|
225 | # define move_to_unaligned16(u16p, v) (*(bb__aliased_uint16_t*)(u16p) = (v))
|
---|
226 | # define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
|
---|
227 | /* #elif ... - add your favorite arch today! */
|
---|
228 | #else
|
---|
229 | # define BB_UNALIGNED_MEMACCESS_OK 0
|
---|
230 | /* performs reasonably well (gcc usually inlines memcpy here) */
|
---|
231 | # define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
|
---|
232 | # define move_from_unaligned_long(v, longp) (memcpy(&(v), (longp), sizeof(long)))
|
---|
233 | # define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
|
---|
234 | # define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
|
---|
235 | # define move_to_unaligned16(u16p, v) do { \
|
---|
236 | uint16_t __t = (v); \
|
---|
237 | memcpy((u16p), &__t, 2); \
|
---|
238 | } while (0)
|
---|
239 | # define move_to_unaligned32(u32p, v) do { \
|
---|
240 | uint32_t __t = (v); \
|
---|
241 | memcpy((u32p), &__t, 4); \
|
---|
242 | } while (0)
|
---|
243 | #endif
|
---|
244 |
|
---|
245 |
|
---|
246 | /* ---- Size-saving "small" ints (arch-dependent) ----------- */
|
---|
247 |
|
---|
248 | #if defined(i386) || defined(__x86_64__) || defined(__mips__) || defined(__cris__)
|
---|
249 | /* add other arches which benefit from this... */
|
---|
250 | typedef signed char smallint;
|
---|
251 | typedef unsigned char smalluint;
|
---|
252 | #else
|
---|
253 | /* for arches where byte accesses generate larger code: */
|
---|
254 | typedef int smallint;
|
---|
255 | typedef unsigned smalluint;
|
---|
256 | #endif
|
---|
257 |
|
---|
258 | /* ISO C Standard: 7.16 Boolean type and values <stdbool.h> */
|
---|
259 | #if (defined __digital__ && defined __unix__)
|
---|
260 | /* old system without (proper) C99 support */
|
---|
261 | # define bool smalluint
|
---|
262 | #else
|
---|
263 | /* modern system, so use it */
|
---|
264 | # include <stdbool.h>
|
---|
265 | #endif
|
---|
266 |
|
---|
267 |
|
---|
268 | /*----- Kernel versioning ------------------------------------*/
|
---|
269 |
|
---|
270 | #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
|
---|
271 |
|
---|
272 | #ifdef __UCLIBC__
|
---|
273 | # define UCLIBC_VERSION KERNEL_VERSION(__UCLIBC_MAJOR__, __UCLIBC_MINOR__, __UCLIBC_SUBLEVEL__)
|
---|
274 | #else
|
---|
275 | # define UCLIBC_VERSION 0
|
---|
276 | #endif
|
---|
277 |
|
---|
278 |
|
---|
279 | /* ---- Miscellaneous --------------------------------------- */
|
---|
280 |
|
---|
281 | #if defined __GLIBC__ \
|
---|
282 | || defined __UCLIBC__ \
|
---|
283 | || defined __dietlibc__ \
|
---|
284 | || defined __BIONIC__ \
|
---|
285 | || defined _NEWLIB_VERSION
|
---|
286 | # include <features.h>
|
---|
287 | #endif
|
---|
288 |
|
---|
289 | /* Define bb_setpgrp */
|
---|
290 | #if defined(__digital__) && defined(__unix__)
|
---|
291 | /* use legacy setpgrp(pid_t, pid_t) for now. move to platform.c */
|
---|
292 | # define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me, __me); } while (0)
|
---|
293 | #else
|
---|
294 | # define bb_setpgrp() setpgrp()
|
---|
295 | #endif
|
---|
296 |
|
---|
297 | /* fdprintf is more readable, we used it before dprintf was standardized */
|
---|
298 | #include <unistd.h>
|
---|
299 | #define fdprintf dprintf
|
---|
300 |
|
---|
301 | /* Useful for defeating gcc's alignment of "char message[]"-like data */
|
---|
302 | #if !defined(__s390__)
|
---|
303 | /* on s390[x], non-word-aligned data accesses require larger code */
|
---|
304 | # define ALIGN1 __attribute__((aligned(1)))
|
---|
305 | # define ALIGN2 __attribute__((aligned(2)))
|
---|
306 | # define ALIGN4 __attribute__((aligned(4)))
|
---|
307 | #else
|
---|
308 | /* Arches which MUST have 2 or 4 byte alignment for everything are here */
|
---|
309 | # define ALIGN1
|
---|
310 | # define ALIGN2
|
---|
311 | # define ALIGN4
|
---|
312 | #endif
|
---|
313 |
|
---|
314 | /*
|
---|
315 | * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
|
---|
316 | * For earlier versions there is no reliable way to check if we are building
|
---|
317 | * for a mmu-less system.
|
---|
318 | */
|
---|
319 | #if ENABLE_NOMMU || \
|
---|
320 | (defined __UCLIBC__ && \
|
---|
321 | UCLIBC_VERSION > KERNEL_VERSION(0, 9, 28) && \
|
---|
322 | !defined __ARCH_USE_MMU__)
|
---|
323 | # define BB_MMU 0
|
---|
324 | # define USE_FOR_NOMMU(...) __VA_ARGS__
|
---|
325 | # define USE_FOR_MMU(...)
|
---|
326 | #else
|
---|
327 | # define BB_MMU 1
|
---|
328 | # define USE_FOR_NOMMU(...)
|
---|
329 | # define USE_FOR_MMU(...) __VA_ARGS__
|
---|
330 | #endif
|
---|
331 |
|
---|
332 | #if defined(__digital__) && defined(__unix__)
|
---|
333 | # include <standards.h>
|
---|
334 | # include <inttypes.h>
|
---|
335 | # define PRIu32 "u"
|
---|
336 | # if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
|
---|
337 | # define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
|
---|
338 | # endif
|
---|
339 | # if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
|
---|
340 | # define ADJ_FREQUENCY MOD_FREQUENCY
|
---|
341 | # endif
|
---|
342 | # if !defined ADJ_TIMECONST && defined MOD_TIMECONST
|
---|
343 | # define ADJ_TIMECONST MOD_TIMECONST
|
---|
344 | # endif
|
---|
345 | # if !defined ADJ_TICK && defined MOD_CLKB
|
---|
346 | # define ADJ_TICK MOD_CLKB
|
---|
347 | # endif
|
---|
348 | #endif
|
---|
349 |
|
---|
350 | #if defined(__CYGWIN__)
|
---|
351 | # define MAXSYMLINKS SYMLOOP_MAX
|
---|
352 | #endif
|
---|
353 |
|
---|
354 | #if defined(ANDROID) || defined(__ANDROID__)
|
---|
355 | # define BB_ADDITIONAL_PATH ":/system/sbin:/system/bin:/system/xbin"
|
---|
356 | # define SYS_ioprio_set __NR_ioprio_set
|
---|
357 | # define SYS_ioprio_get __NR_ioprio_get
|
---|
358 | #endif
|
---|
359 |
|
---|
360 |
|
---|
361 | /* ---- Who misses what? ------------------------------------ */
|
---|
362 |
|
---|
363 | /* Assume all these functions and header files exist by default.
|
---|
364 | * Platforms where it is not true will #undef them below.
|
---|
365 | */
|
---|
366 | #define HAVE_CLEARENV 1
|
---|
367 | #define HAVE_FDATASYNC 1
|
---|
368 | #define HAVE_DPRINTF 1
|
---|
369 | #define HAVE_MEMRCHR 1
|
---|
370 | #define HAVE_MKDTEMP 1
|
---|
371 | #define HAVE_TTYNAME_R 1
|
---|
372 | #define HAVE_PTSNAME_R 1
|
---|
373 | #define HAVE_SETBIT 1
|
---|
374 | #define HAVE_SIGHANDLER_T 1
|
---|
375 | #define HAVE_STPCPY 1
|
---|
376 | #define HAVE_MEMPCPY 1
|
---|
377 | #define HAVE_STRCASESTR 1
|
---|
378 | #define HAVE_STRCHRNUL 1
|
---|
379 | #define HAVE_STRSEP 1
|
---|
380 | #define HAVE_STRSIGNAL 1
|
---|
381 | #define HAVE_STRVERSCMP 1
|
---|
382 | #define HAVE_VASPRINTF 1
|
---|
383 | #define HAVE_USLEEP 1
|
---|
384 | #define HAVE_UNLOCKED_STDIO 1
|
---|
385 | #define HAVE_UNLOCKED_LINE_OPS 1
|
---|
386 | #define HAVE_GETLINE 1
|
---|
387 | #define HAVE_XTABS 1
|
---|
388 | #define HAVE_MNTENT_H 1
|
---|
389 | #define HAVE_NET_ETHERNET_H 1
|
---|
390 | #define HAVE_SYS_STATFS_H 1
|
---|
391 |
|
---|
392 | #if defined(__UCLIBC__)
|
---|
393 | # if UCLIBC_VERSION < KERNEL_VERSION(0, 9, 32)
|
---|
394 | # undef HAVE_STRVERSCMP
|
---|
395 | # endif
|
---|
396 | # if UCLIBC_VERSION >= KERNEL_VERSION(0, 9, 30)
|
---|
397 | # ifndef __UCLIBC_SUSV3_LEGACY__
|
---|
398 | # undef HAVE_USLEEP
|
---|
399 | # endif
|
---|
400 | # endif
|
---|
401 | #endif
|
---|
402 |
|
---|
403 | #if defined(__WATCOMC__)
|
---|
404 | # undef HAVE_DPRINTF
|
---|
405 | # undef HAVE_GETLINE
|
---|
406 | # undef HAVE_MEMRCHR
|
---|
407 | # undef HAVE_MKDTEMP
|
---|
408 | # undef HAVE_SETBIT
|
---|
409 | # undef HAVE_STPCPY
|
---|
410 | # undef HAVE_STRCASESTR
|
---|
411 | # undef HAVE_STRCHRNUL
|
---|
412 | # undef HAVE_STRSEP
|
---|
413 | # undef HAVE_STRSIGNAL
|
---|
414 | # undef HAVE_STRVERSCMP
|
---|
415 | # undef HAVE_VASPRINTF
|
---|
416 | # undef HAVE_UNLOCKED_STDIO
|
---|
417 | # undef HAVE_UNLOCKED_LINE_OPS
|
---|
418 | # undef HAVE_NET_ETHERNET_H
|
---|
419 | #endif
|
---|
420 |
|
---|
421 | #if defined(__CYGWIN__)
|
---|
422 | # undef HAVE_CLEARENV
|
---|
423 | # undef HAVE_FDPRINTF
|
---|
424 | # undef HAVE_MEMRCHR
|
---|
425 | # undef HAVE_PTSNAME_R
|
---|
426 | # undef HAVE_STRVERSCMP
|
---|
427 | # undef HAVE_UNLOCKED_LINE_OPS
|
---|
428 | #endif
|
---|
429 |
|
---|
430 | /* These BSD-derived OSes share many similarities */
|
---|
431 | #if (defined __digital__ && defined __unix__) \
|
---|
432 | || defined __APPLE__ \
|
---|
433 | || defined __OpenBSD__ || defined __NetBSD__
|
---|
434 | # undef HAVE_CLEARENV
|
---|
435 | # undef HAVE_FDATASYNC
|
---|
436 | # undef HAVE_GETLINE
|
---|
437 | # undef HAVE_MNTENT_H
|
---|
438 | # undef HAVE_PTSNAME_R
|
---|
439 | # undef HAVE_SYS_STATFS_H
|
---|
440 | # undef HAVE_SIGHANDLER_T
|
---|
441 | # undef HAVE_STRVERSCMP
|
---|
442 | # undef HAVE_XTABS
|
---|
443 | # undef HAVE_DPRINTF
|
---|
444 | # undef HAVE_UNLOCKED_STDIO
|
---|
445 | # undef HAVE_UNLOCKED_LINE_OPS
|
---|
446 | #endif
|
---|
447 |
|
---|
448 | #if defined(__dietlibc__)
|
---|
449 | # undef HAVE_STRCHRNUL
|
---|
450 | #endif
|
---|
451 |
|
---|
452 | #if defined(__APPLE__)
|
---|
453 | # undef HAVE_STRCHRNUL
|
---|
454 | #endif
|
---|
455 |
|
---|
456 | #if defined(__FreeBSD__)
|
---|
457 | /* users say mempcpy is not present in FreeBSD 9.x */
|
---|
458 | # undef HAVE_MEMPCPY
|
---|
459 | # undef HAVE_CLEARENV
|
---|
460 | # undef HAVE_FDATASYNC
|
---|
461 | # undef HAVE_MNTENT_H
|
---|
462 | # undef HAVE_PTSNAME_R
|
---|
463 | # undef HAVE_SYS_STATFS_H
|
---|
464 | # undef HAVE_SIGHANDLER_T
|
---|
465 | # undef HAVE_STRVERSCMP
|
---|
466 | # undef HAVE_XTABS
|
---|
467 | # undef HAVE_UNLOCKED_LINE_OPS
|
---|
468 | # include <osreldate.h>
|
---|
469 | # if __FreeBSD_version < 1000029
|
---|
470 | # undef HAVE_STRCHRNUL /* FreeBSD added strchrnul() between 1000028 and 1000029 */
|
---|
471 | # endif
|
---|
472 | #endif
|
---|
473 |
|
---|
474 | #if defined(__NetBSD__)
|
---|
475 | # define HAVE_GETLINE 1 /* Recent NetBSD versions have getline() */
|
---|
476 | #endif
|
---|
477 |
|
---|
478 | #if defined(__digital__) && defined(__unix__)
|
---|
479 | # undef HAVE_STPCPY
|
---|
480 | #endif
|
---|
481 |
|
---|
482 | #if defined(ANDROID) || defined(__ANDROID__)
|
---|
483 | # if __ANDROID_API__ < 8
|
---|
484 | /* ANDROID < 8 has no [f]dprintf at all */
|
---|
485 | # undef HAVE_DPRINTF
|
---|
486 | # elif __ANDROID_API__ < 21
|
---|
487 | /* ANDROID < 21 has fdprintf */
|
---|
488 | # define dprintf fdprintf
|
---|
489 | # else
|
---|
490 | /* ANDROID >= 21 has standard dprintf */
|
---|
491 | # endif
|
---|
492 | # if __ANDROID_API__ < 21
|
---|
493 | # undef HAVE_TTYNAME_R
|
---|
494 | # undef HAVE_GETLINE
|
---|
495 | # undef HAVE_STPCPY
|
---|
496 | # endif
|
---|
497 | # undef HAVE_MEMPCPY
|
---|
498 | # undef HAVE_STRCHRNUL
|
---|
499 | # undef HAVE_STRVERSCMP
|
---|
500 | # undef HAVE_UNLOCKED_LINE_OPS
|
---|
501 | # undef HAVE_NET_ETHERNET_H
|
---|
502 | #endif
|
---|
503 |
|
---|
504 | /*
|
---|
505 | * Now, define prototypes for all the functions defined in platform.c
|
---|
506 | * These must come after all the HAVE_* macros are defined (or not)
|
---|
507 | */
|
---|
508 |
|
---|
509 | #ifndef HAVE_DPRINTF
|
---|
510 | extern int dprintf(int fd, const char *format, ...);
|
---|
511 | #endif
|
---|
512 |
|
---|
513 | #ifndef HAVE_MEMRCHR
|
---|
514 | extern void *memrchr(const void *s, int c, size_t n) FAST_FUNC;
|
---|
515 | #endif
|
---|
516 |
|
---|
517 | #ifndef HAVE_MKDTEMP
|
---|
518 | extern char *mkdtemp(char *template) FAST_FUNC;
|
---|
519 | #endif
|
---|
520 |
|
---|
521 | #ifndef HAVE_TTYNAME_R
|
---|
522 | #define ttyname_r bb_ttyname_r
|
---|
523 | extern int ttyname_r(int fd, char *buf, size_t buflen);
|
---|
524 | #endif
|
---|
525 |
|
---|
526 | #ifndef HAVE_SETBIT
|
---|
527 | # define setbit(a, b) ((a)[(b) >> 3] |= 1 << ((b) & 7))
|
---|
528 | # define clrbit(a, b) ((a)[(b) >> 3] &= ~(1 << ((b) & 7)))
|
---|
529 | #endif
|
---|
530 |
|
---|
531 | #ifndef HAVE_SIGHANDLER_T
|
---|
532 | typedef void (*sighandler_t)(int);
|
---|
533 | #endif
|
---|
534 |
|
---|
535 | #ifndef HAVE_STPCPY
|
---|
536 | extern char *stpcpy(char *p, const char *to_add) FAST_FUNC;
|
---|
537 | #endif
|
---|
538 |
|
---|
539 | #ifndef HAVE_MEMPCPY
|
---|
540 | #include <string.h>
|
---|
541 | /* In case we are wrong about !HAVE_MEMPCPY, and toolchain _does_ have
|
---|
542 | * mempcpy(), avoid colliding with it:
|
---|
543 | */
|
---|
544 | #define mempcpy bb__mempcpy
|
---|
545 | static ALWAYS_INLINE void *mempcpy(void *dest, const void *src, size_t len)
|
---|
546 | {
|
---|
547 | return memcpy(dest, src, len) + len;
|
---|
548 | }
|
---|
549 | #endif
|
---|
550 |
|
---|
551 | #ifndef HAVE_STRCASESTR
|
---|
552 | extern char *strcasestr(const char *s, const char *pattern) FAST_FUNC;
|
---|
553 | #endif
|
---|
554 |
|
---|
555 | #ifndef HAVE_STRCHRNUL
|
---|
556 | extern char *strchrnul(const char *s, int c) FAST_FUNC;
|
---|
557 | #endif
|
---|
558 |
|
---|
559 | #ifndef HAVE_STRSEP
|
---|
560 | extern char *strsep(char **stringp, const char *delim) FAST_FUNC;
|
---|
561 | #endif
|
---|
562 |
|
---|
563 | #ifndef HAVE_STRSIGNAL
|
---|
564 | /* Not exactly the same: instead of "Stopped" it shows "STOP" etc */
|
---|
565 | # define strsignal(sig) get_signame(sig)
|
---|
566 | #endif
|
---|
567 |
|
---|
568 | #ifndef HAVE_USLEEP
|
---|
569 | extern int usleep(unsigned) FAST_FUNC;
|
---|
570 | #endif
|
---|
571 |
|
---|
572 | #ifndef HAVE_VASPRINTF
|
---|
573 | extern int vasprintf(char **string_ptr, const char *format, va_list p) FAST_FUNC;
|
---|
574 | #endif
|
---|
575 |
|
---|
576 | #ifndef HAVE_GETLINE
|
---|
577 | # include <stdio.h> /* for FILE */
|
---|
578 | # include <sys/types.h> /* size_t */
|
---|
579 | extern ssize_t getline(char **lineptr, size_t *n, FILE *stream) FAST_FUNC;
|
---|
580 | #endif
|
---|
581 |
|
---|
582 | #endif
|
---|