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Bernhard Reutner-Fischerb1629b12006-05-19 19:29:19 +00001/* vi: set sw=4 ts=4: */
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +00002/*
Denys Vlasenko0ef64bd2010-08-16 20:14:46 +02003 * Copyright 2006, Bernhard Reutner-Fischer
Denys Vlasenko867ffb92010-08-16 03:24:40 +02004 *
Denys Vlasenko0ef64bd2010-08-16 20:14:46 +02005 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
Denys Vlasenko867ffb92010-08-16 03:24:40 +02006 */
Denys Vlasenkoe4dcba12010-10-28 18:57:19 +02007#ifndef BB_PLATFORM_H
Denis Vlasenkof81e8db2009-04-09 12:35:13 +00008#define BB_PLATFORM_H 1
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +00009
Dan Fandrich21a542d2009-10-27 11:05:00 +010010
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000011/* 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) \
Denis Vlasenko9213a9e2006-09-17 16:28:10 +000015 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000016#else
17# define __GNUC_PREREQ(maj, min) 0
18#endif
19
20/* __restrict is known in EGCS 1.2 and above. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000021#if !__GNUC_PREREQ(2,92)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000022# ifndef __restrict
Denys Vlasenko5a49d282009-05-19 13:18:45 +020023# define __restrict
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000024# endif
25#endif
26
Denis Vlasenko98636eb2008-05-09 17:59:34 +000027#if !__GNUC_PREREQ(2,7)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000028# ifndef __attribute__
29# define __attribute__(x)
30# endif
31#endif
32
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000033#undef inline
Denis Vlasenkoa7189f02006-11-17 20:29:00 +000034#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000035/* it's a keyword */
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020036#elif __GNUC_PREREQ(2,7)
37# define inline __inline__
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000038#else
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020039# define inline
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000040#endif
41
42#ifndef __const
43# define __const const
44#endif
45
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000046#define UNUSED_PARAM __attribute__ ((__unused__))
47#define NORETURN __attribute__ ((__noreturn__))
Denys Vlasenko53283ad2009-11-02 14:20:34 +010048/* "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))
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000057#define PACKED __attribute__ ((__packed__))
58#define ALIGNED(m) __attribute__ ((__aligned__(m)))
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020059
Denis Vlasenko0f3a5802008-03-20 13:13:09 +000060/* __NO_INLINE__: some gcc's do not honor inlining! :( */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000061#if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
62# define ALWAYS_INLINE __attribute__ ((always_inline)) inline
Denis Vlasenko77f1ec12007-10-13 03:36:03 +000063/* I've seen a toolchain where I needed __noinline__ instead of noinline */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000064# define NOINLINE __attribute__((__noinline__))
65# if !ENABLE_WERROR
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000066# define DEPRECATED __attribute__ ((__deprecated__))
67# define UNUSED_PARAM_RESULT __attribute__ ((warn_unused_result))
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000068# else
Denys Vlasenko5a49d282009-05-19 13:18:45 +020069# define DEPRECATED
70# define UNUSED_PARAM_RESULT
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000071# endif
Denis Vlasenko98636eb2008-05-09 17:59:34 +000072#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +020073# define ALWAYS_INLINE inline
74# define NOINLINE
75# define DEPRECATED
76# define UNUSED_PARAM_RESULT
Denis Vlasenko98636eb2008-05-09 17:59:34 +000077#endif
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000078
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000079/* -fwhole-program makes all symbols local. The attribute externally_visible
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +020080 * forces a symbol global. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000081#if __GNUC_PREREQ(4,1)
82# define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
Denis Vlasenko9b49a5e2007-10-11 10:05:36 +000083//__attribute__ ((__externally_visible__))
Denis Vlasenko98636eb2008-05-09 17:59:34 +000084#else
85# define EXTERNALLY_VISIBLE
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +000086#endif
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000087
Denys Vlasenko98a4c7c2010-02-04 15:00:15 +010088/* At 4.4 gcc become much more anal about this, need to use "aliased" types */
89#if __GNUC_PREREQ(4,4)
90# define FIX_ALIASING __attribute__((__may_alias__))
91#else
92# define FIX_ALIASING
93#endif
94
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000095/* We use __extension__ in some places to suppress -pedantic warnings
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +020096 * about GCC extensions. This feature didn't work properly before
97 * gcc 2.8. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000098#if !__GNUC_PREREQ(2,8)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000099# ifndef __extension__
100# define __extension__
101# endif
102#endif
103
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000104/* FAST_FUNC is a qualifier which (possibly) makes function call faster
105 * and/or smaller by using modified ABI. It is usually only needed
106 * on non-static, busybox internal functions. Recent versions of gcc
107 * optimize statics automatically. FAST_FUNC on static is required
108 * only if you need to match a function pointer's type */
Denis Vlasenkoac2b50e2008-06-27 04:30:48 +0000109#if __GNUC_PREREQ(3,0) && defined(i386) /* || defined(__x86_64__)? */
110/* stdcall makes callee to pop arguments from stack, not caller */
111# define FAST_FUNC __attribute__((regparm(3),stdcall))
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000112/* #elif ... - add your favorite arch today! */
Denis Vlasenkodefc1ea2008-06-27 02:52:20 +0000113#else
114# define FAST_FUNC
115#endif
116
Denis Vlasenkof81e8db2009-04-09 12:35:13 +0000117/* Make all declarations hidden (-fvisibility flag only affects definitions) */
118/* (don't include system headers after this until corresponding pop!) */
Denys Vlasenko4dc35fb2011-07-08 04:41:38 +0200119#if __GNUC_PREREQ(4,1) && !defined(__CYGWIN__)
Denis Vlasenkof81e8db2009-04-09 12:35:13 +0000120# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
121# define POP_SAVED_FUNCTION_VISIBILITY _Pragma("GCC visibility pop")
122#else
123# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
124# define POP_SAVED_FUNCTION_VISIBILITY
125#endif
126
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200127/* gcc-2.95 had no va_copy but only __va_copy. */
128#if !__GNUC_PREREQ(3,0)
129# include <stdarg.h>
130# if !defined va_copy && defined __va_copy
131# define va_copy(d,s) __va_copy((d),(s))
132# endif
133#endif
134
135
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000136/* ---- Endian Detection ------------------------------------ */
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000137
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200138#include <limits.h>
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200139#if defined(__digital__) && defined(__unix__)
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000140# include <sex.h>
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200141#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
142 || defined(__APPLE__)
Denys Vlasenkofb132e42010-10-29 11:46:52 +0200143# include <sys/resource.h> /* rlimit */
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200144# include <machine/endian.h>
145# define bswap_64 __bswap64
146# define bswap_32 __bswap32
147# define bswap_16 __bswap16
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200148#else
Rob Landley15d20a02006-05-29 05:00:44 +0000149# include <byteswap.h>
150# include <endian.h>
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000151#endif
152
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200153#if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN
Mike Frysingerf8855132006-03-28 02:35:56 +0000154# define BB_BIG_ENDIAN 1
155# define BB_LITTLE_ENDIAN 0
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200156#elif defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN
157# define BB_BIG_ENDIAN 0
158# define BB_LITTLE_ENDIAN 1
Waldemar Brodkorb95b83ba2010-08-06 09:17:26 +0200159#elif defined(_BYTE_ORDER) && _BYTE_ORDER == _BIG_ENDIAN
160# define BB_BIG_ENDIAN 1
161# define BB_LITTLE_ENDIAN 0
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200162#elif defined(_BYTE_ORDER) && _BYTE_ORDER == _LITTLE_ENDIAN
Mike Frysingerf8855132006-03-28 02:35:56 +0000163# define BB_BIG_ENDIAN 0
164# define BB_LITTLE_ENDIAN 1
Denys Vlasenko867ffb92010-08-16 03:24:40 +0200165#elif defined(BYTE_ORDER) && BYTE_ORDER == BIG_ENDIAN
166# define BB_BIG_ENDIAN 1
167# define BB_LITTLE_ENDIAN 0
168#elif defined(BYTE_ORDER) && BYTE_ORDER == LITTLE_ENDIAN
169# define BB_BIG_ENDIAN 0
170# define BB_LITTLE_ENDIAN 1
171#elif defined(__386__)
Waldemar Brodkorb95b83ba2010-08-06 09:17:26 +0200172# define BB_BIG_ENDIAN 0
173# define BB_LITTLE_ENDIAN 1
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200174#else
Dan Fandrich21a542d2009-10-27 11:05:00 +0100175# error "Can't determine endianness"
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000176#endif
177
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200178#if ULONG_MAX > 0xffffffff
179# define bb_bswap_64(x) bswap_64(x)
180#endif
181
Denis Vlasenko9b0f6e12008-11-01 13:40:32 +0000182/* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */
Rob Landleybba7f082006-05-29 05:51:12 +0000183#if BB_BIG_ENDIAN
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200184# define SWAP_BE16(x) (x)
185# define SWAP_BE32(x) (x)
186# define SWAP_BE64(x) (x)
187# define SWAP_LE16(x) bswap_16(x)
188# define SWAP_LE32(x) bswap_32(x)
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200189# define SWAP_LE64(x) bb_bswap_64(x)
Denys Vlasenkobcccad32010-10-16 20:46:35 +0200190# define IF_BIG_ENDIAN(...) __VA_ARGS__
191# define IF_LITTLE_ENDIAN(...)
Rob Landleybba7f082006-05-29 05:51:12 +0000192#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200193# define SWAP_BE16(x) bswap_16(x)
194# define SWAP_BE32(x) bswap_32(x)
Denys Vlasenko9ff50b82010-10-18 11:40:26 +0200195# define SWAP_BE64(x) bb_bswap_64(x)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200196# define SWAP_LE16(x) (x)
197# define SWAP_LE32(x) (x)
198# define SWAP_LE64(x) (x)
Denys Vlasenkobcccad32010-10-16 20:46:35 +0200199# define IF_BIG_ENDIAN(...)
200# define IF_LITTLE_ENDIAN(...) __VA_ARGS__
Rob Landleybba7f082006-05-29 05:51:12 +0000201#endif
202
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200203
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000204/* ---- Unaligned access ------------------------------------ */
205
Denys Vlasenko1f4a9872011-01-22 17:31:35 +0100206#include <stdint.h>
Denys Vlasenkob40da222011-01-21 01:16:09 +0100207typedef int bb__aliased_int FIX_ALIASING;
208typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
209typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
210
Denis Vlasenkoefb545b2008-12-08 22:56:18 +0000211/* NB: unaligned parameter should be a pointer, aligned one -
212 * a lvalue. This makes it more likely to not swap them by mistake
213 */
Joakim Tjernlund80f42752010-02-11 08:48:15 +0100214#if defined(i386) || defined(__x86_64__) || defined(__powerpc__)
Denys Vlasenko12ca0802010-02-04 18:41:18 +0100215# define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
216# define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
217# define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
Denys Vlasenko5fb38492010-02-06 22:48:10 +0100218# define move_to_unaligned16(u16p, v) (*(bb__aliased_uint16_t*)(u16p) = (v))
Denys Vlasenko12ca0802010-02-04 18:41:18 +0100219# define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000220/* #elif ... - add your favorite arch today! */
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000221#else
222/* performs reasonably well (gcc usually inlines memcpy here) */
Denys Vlasenko57be1ee2009-11-26 15:26:31 +0100223# define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200224# define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
225# define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
Denys Vlasenko5fb38492010-02-06 22:48:10 +0100226# define move_to_unaligned16(u16p, v) do { \
227 uint16_t __t = (v); \
228 memcpy((u16p), &__t, 4); \
229} while (0)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200230# define move_to_unaligned32(u32p, v) do { \
Denis Vlasenko3be23082009-04-17 22:20:44 +0000231 uint32_t __t = (v); \
232 memcpy((u32p), &__t, 4); \
233} while (0)
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000234#endif
235
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000236
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200237/* ---- Size-saving "small" ints (arch-dependent) ----------- */
Bernhard Reutner-Fischerbe862092007-03-19 15:15:06 +0000238
Bernhard Reutner-Fischerc966ba42007-01-18 10:32:09 +0000239#if defined(i386) || defined(__x86_64__) || defined(__mips__) || defined(__cris__)
240/* add other arches which benefit from this... */
241typedef signed char smallint;
242typedef unsigned char smalluint;
243#else
244/* for arches where byte accesses generate larger code: */
245typedef int smallint;
246typedef unsigned smalluint;
247#endif
248
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000249/* ISO C Standard: 7.16 Boolean type and values <stdbool.h> */
250#if (defined __digital__ && defined __unix__)
251/* old system without (proper) C99 support */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200252# define bool smalluint
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000253#else
254/* modern system, so use it */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200255# include <stdbool.h>
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000256#endif
257
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200258
259/*----- Kernel versioning ------------------------------------*/
260
261#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
262
263
264/* ---- Miscellaneous --------------------------------------- */
265
266#if defined __GLIBC__ \
267 || defined __UCLIBC__ \
268 || defined __dietlibc__ \
Denys Vlasenko14bd16a2011-07-08 08:49:40 +0200269 || defined __BIONIC__ \
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200270 || defined _NEWLIB_VERSION
271# include <features.h>
272#endif
273
274/* Define bb_setpgrp */
275#if defined(__digital__) && defined(__unix__)
276/* use legacy setpgrp(pid_t, pid_t) for now. move to platform.c */
277# define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me, __me); } while (0)
278#else
279# define bb_setpgrp() setpgrp()
280#endif
281
282/* fdprintf is more readable, we used it before dprintf was standardized */
283#include <unistd.h>
284#define fdprintf dprintf
285
286/* Useful for defeating gcc's alignment of "char message[]"-like data */
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000287#if 1 /* if needed: !defined(arch1) && !defined(arch2) */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200288# define ALIGN1 __attribute__((aligned(1)))
289# define ALIGN2 __attribute__((aligned(2)))
Denys Vlasenko0ecc1162010-04-14 10:14:25 -0700290# define ALIGN4 __attribute__((aligned(4)))
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000291#else
292/* Arches which MUST have 2 or 4 byte alignment for everything are here */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200293# define ALIGN1
294# define ALIGN2
Denys Vlasenko0ecc1162010-04-14 10:14:25 -0700295# define ALIGN4
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000296#endif
297
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200298/*
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000299 * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
300 * For earlier versions there is no reliable way to check if we are building
Denis Vlasenko9e589212008-01-24 01:33:42 +0000301 * for a mmu-less system.
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000302 */
Denis Vlasenkod2c450c2008-01-08 20:32:12 +0000303#if ENABLE_NOMMU || \
304 (defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
305 __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200306# define BB_MMU 0
307# define USE_FOR_NOMMU(...) __VA_ARGS__
308# define USE_FOR_MMU(...)
Denis Vlasenko473dae02007-04-11 07:04:23 +0000309#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200310# define BB_MMU 1
311# define USE_FOR_NOMMU(...)
312# define USE_FOR_MMU(...) __VA_ARGS__
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000313#endif
314
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200315#if defined(__digital__) && defined(__unix__)
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000316# include <standards.h>
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000317# include <inttypes.h>
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000318# define PRIu32 "u"
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000319# if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
320# define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
321# endif
322# if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
323# define ADJ_FREQUENCY MOD_FREQUENCY
324# endif
325# if !defined ADJ_TIMECONST && defined MOD_TIMECONST
326# define ADJ_TIMECONST MOD_TIMECONST
327# endif
328# if !defined ADJ_TICK && defined MOD_CLKB
329# define ADJ_TICK MOD_CLKB
330# endif
Rob Landley18958e92006-06-13 18:28:33 +0000331#endif
332
Denys Vlasenko4dc35fb2011-07-08 04:41:38 +0200333#if defined(__CYGWIN__)
334# define MAXSYMLINKS SYMLOOP_MAX
335#endif
336
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200337
338/* ---- Who misses what? ------------------------------------ */
339
Dan Fandrichf533ec82011-06-10 05:17:59 +0200340/* Assume all these functions and header files exist by default.
341 * Platforms where it is not true will #undef them below.
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200342 */
343#define HAVE_CLEARENV 1
344#define HAVE_FDATASYNC 1
345#define HAVE_DPRINTF 1
346#define HAVE_MEMRCHR 1
347#define HAVE_MKDTEMP 1
348#define HAVE_PTSNAME_R 1
349#define HAVE_SETBIT 1
350#define HAVE_SIGHANDLER_T 1
351#define HAVE_STPCPY 1
352#define HAVE_STRCASESTR 1
353#define HAVE_STRCHRNUL 1
354#define HAVE_STRSEP 1
355#define HAVE_STRSIGNAL 1
Denys Vlasenko561f9c82011-06-21 16:38:29 +0200356#define HAVE_STRVERSCMP 1
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200357#define HAVE_VASPRINTF 1
Dan Fandrich75214cf2011-06-30 02:59:17 +0200358#define HAVE_UNLOCKED_STDIO 1
359#define HAVE_UNLOCKED_LINE_OPS 1
Timo Teras0a5b3102011-06-29 02:19:58 +0200360#define HAVE_GETLINE 1
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200361#define HAVE_XTABS 1
Dan Fandrichf533ec82011-06-10 05:17:59 +0200362#define HAVE_MNTENT_H 1
363#define HAVE_NET_ETHERNET_H 1
364#define HAVE_SYS_STATFS_H 1
365
Denys Vlasenko1e18a012011-06-21 17:12:52 +0200366#if defined(__UCLIBC_MAJOR__)
367# if __UCLIBC_MAJOR__ == 0 \
368 && ( __UCLIBC_MINOR__ < 9 \
369 || (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ < 31) \
370 )
371# undef HAVE_STRVERSCMP
372# endif
373#endif
374
Dan Fandrich21a542d2009-10-27 11:05:00 +0100375#if defined(__dietlibc__)
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100376# undef HAVE_STRCHRNUL
Dan Fandrich21a542d2009-10-27 11:05:00 +0100377#endif
378
379#if defined(__WATCOMC__)
Denys Vlasenko47061b42011-04-17 23:14:19 +0200380# undef HAVE_DPRINTF
Dan Fandrich0e79e7b2011-06-28 23:03:27 -0700381# undef HAVE_GETLINE
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100382# undef HAVE_MEMRCHR
383# undef HAVE_MKDTEMP
384# undef HAVE_SETBIT
Dan Fandrichdc506762011-02-12 22:26:57 -0800385# undef HAVE_STPCPY
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100386# undef HAVE_STRCASESTR
387# undef HAVE_STRCHRNUL
Dan Fandrich0635ddd2010-06-18 22:36:45 -0700388# undef HAVE_STRSEP
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100389# undef HAVE_STRSIGNAL
Denys Vlasenko561f9c82011-06-21 16:38:29 +0200390# undef HAVE_STRVERSCMP
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100391# undef HAVE_VASPRINTF
Dan Fandrich75214cf2011-06-30 02:59:17 +0200392# undef HAVE_UNLOCKED_STDIO
393# undef HAVE_UNLOCKED_LINE_OPS
Dan Fandrichf533ec82011-06-10 05:17:59 +0200394# undef HAVE_NET_ETHERNET_H
Dan Fandrich21a542d2009-10-27 11:05:00 +0100395#endif
396
Denys Vlasenko4dc35fb2011-07-08 04:41:38 +0200397#if defined(__CYGWIN__)
398# undef HAVE_CLEARENV
399# undef HAVE_FDPRINTF
400# undef HAVE_MEMRCHR
401# undef HAVE_PTSNAME_R
402# undef HAVE_STRVERSCMP
403# undef HAVE_UNLOCKED_LINE_OPS
404#endif
405
Dan Fandrich0e79e7b2011-06-28 23:03:27 -0700406/* These BSD-derived OSes share many similarities */
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200407#if (defined __digital__ && defined __unix__) \
408 || defined __APPLE__ \
409 || defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__
410# undef HAVE_CLEARENV
411# undef HAVE_FDATASYNC
Dan Fandrich0e79e7b2011-06-28 23:03:27 -0700412# undef HAVE_GETLINE
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200413# undef HAVE_MNTENT_H
414# undef HAVE_PTSNAME_R
415# undef HAVE_SYS_STATFS_H
416# undef HAVE_SIGHANDLER_T
Denys Vlasenko561f9c82011-06-21 16:38:29 +0200417# undef HAVE_STRVERSCMP
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200418# undef HAVE_XTABS
419# undef HAVE_DPRINTF
Matthias Andree12854372011-08-28 05:04:07 +0200420# undef HAVE_UNLOCKED_STDIO
421# undef HAVE_UNLOCKED_LINE_OPS
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200422#endif
423
Dan Fandrich0e79e7b2011-06-28 23:03:27 -0700424#if defined(__FreeBSD__)
425# undef HAVE_STRCHRNUL
426#endif
427
428#if defined(__NetBSD__)
429# define HAVE_GETLINE 1 /* Recent NetBSD versions have getline() */
430#endif
431
Denys Vlasenko89f5bfd2011-05-12 23:03:18 +0200432#if defined(__digital__) && defined(__unix__)
433# undef HAVE_STPCPY
434#endif
435
Dan Fandrich71d73132011-06-03 20:51:58 +0200436#if defined(ANDROID)
437# undef HAVE_DPRINTF
Dan Fandrich0e79e7b2011-06-28 23:03:27 -0700438# undef HAVE_GETLINE
Dan Fandrich71d73132011-06-03 20:51:58 +0200439# undef HAVE_STPCPY
440# undef HAVE_STRCHRNUL
Denys Vlasenko561f9c82011-06-21 16:38:29 +0200441# undef HAVE_STRVERSCMP
Dan Fandrich75214cf2011-06-30 02:59:17 +0200442# undef HAVE_UNLOCKED_LINE_OPS
Dan Fandrichf533ec82011-06-10 05:17:59 +0200443# undef HAVE_NET_ETHERNET_H
Dan Fandrich71d73132011-06-03 20:51:58 +0200444#endif
445
Dan Fandrich21a542d2009-10-27 11:05:00 +0100446/*
447 * Now, define prototypes for all the functions defined in platform.c
448 * These must come after all the HAVE_* macros are defined (or not)
449 */
450
Denys Vlasenko47061b42011-04-17 23:14:19 +0200451#ifndef HAVE_DPRINTF
452extern int dprintf(int fd, const char *format, ...);
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100453#endif
454
455#ifndef HAVE_MEMRCHR
456extern void *memrchr(const void *s, int c, size_t n) FAST_FUNC;
457#endif
458
459#ifndef HAVE_MKDTEMP
460extern char *mkdtemp(char *template) FAST_FUNC;
461#endif
462
463#ifndef HAVE_SETBIT
464# define setbit(a, b) ((a)[(b) >> 3] |= 1 << ((b) & 7))
465# define clrbit(a, b) ((a)[(b) >> 3] &= ~(1 << ((b) & 7)))
466#endif
467
Chris Rees9ad97d52011-01-20 00:51:52 +0100468#ifndef HAVE_SIGHANDLER_T
469typedef void (*sighandler_t)(int);
470#endif
471
Dan Fandrichdc506762011-02-12 22:26:57 -0800472#ifndef HAVE_STPCPY
473extern char *stpcpy(char *p, const char *to_add) FAST_FUNC;
474#endif
475
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100476#ifndef HAVE_STRCASESTR
477extern char *strcasestr(const char *s, const char *pattern) FAST_FUNC;
478#endif
479
Dan Fandrich21a542d2009-10-27 11:05:00 +0100480#ifndef HAVE_STRCHRNUL
481extern char *strchrnul(const char *s, int c) FAST_FUNC;
482#endif
483
Dan Fandrich0635ddd2010-06-18 22:36:45 -0700484#ifndef HAVE_STRSEP
485extern char *strsep(char **stringp, const char *delim) FAST_FUNC;
486#endif
487
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100488#ifndef HAVE_STRSIGNAL
489/* Not exactly the same: instead of "Stopped" it shows "STOP" etc */
490# define strsignal(sig) get_signame(sig)
Dan Fandrich21a542d2009-10-27 11:05:00 +0100491#endif
492
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100493#ifndef HAVE_VASPRINTF
494extern int vasprintf(char **string_ptr, const char *format, va_list p) FAST_FUNC;
Dan Fandrich21a542d2009-10-27 11:05:00 +0100495#endif
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200496
Timo Teras0a5b3102011-06-29 02:19:58 +0200497#ifndef HAVE_GETLINE
Denys Vlasenko14bd16a2011-07-08 08:49:40 +0200498# include <stdio.h> /* for FILE */
499# include <sys/types.h> /* size_t */
Timo Teras0a5b3102011-06-29 02:19:58 +0200500extern ssize_t getline(char **lineptr, size_t *n, FILE *stream) FAST_FUNC;
501#endif
502
Denis Vlasenkof81e8db2009-04-09 12:35:13 +0000503#endif