blob: 2d3821c0220b36f1b06f951ee9041bb581cc7927 [file] [log] [blame]
Bernhard Reutner-Fischerb1629b12006-05-19 19:29:19 +00001/* vi: set sw=4 ts=4: */
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +00002/*
Bernhard Reutner-Fischer6c4dade2008-09-25 12:13:34 +00003 Copyright 2006, Bernhard Reutner-Fischer
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +00004
5 Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
6*/
Denis Vlasenkof81e8db2009-04-09 12:35:13 +00007#ifndef BB_PLATFORM_H
8#define BB_PLATFORM_H 1
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +00009
Dan Fandrich21a542d2009-10-27 11:05:00 +010010/* Assume all these functions exist by default. Platforms where it is not
11 * true will #undef them below.
12 */
13#define HAVE_FDPRINTF 1
Dan Fandrichfe4e23f2009-11-01 04:01:30 +010014#define HAVE_MEMRCHR 1
15#define HAVE_MKDTEMP 1
16#define HAVE_SETBIT 1
17#define HAVE_STRCASESTR 1
Dan Fandrich21a542d2009-10-27 11:05:00 +010018#define HAVE_STRCHRNUL 1
Dan Fandrichfe4e23f2009-11-01 04:01:30 +010019#define HAVE_STRSIGNAL 1
Dan Fandrich21a542d2009-10-27 11:05:00 +010020#define HAVE_VASPRINTF 1
21
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000022/* Convenience macros to test the version of gcc. */
23#undef __GNUC_PREREQ
24#if defined __GNUC__ && defined __GNUC_MINOR__
25# define __GNUC_PREREQ(maj, min) \
Denis Vlasenko9213a9e2006-09-17 16:28:10 +000026 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000027#else
28# define __GNUC_PREREQ(maj, min) 0
29#endif
30
31/* __restrict is known in EGCS 1.2 and above. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000032#if !__GNUC_PREREQ(2,92)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000033# ifndef __restrict
Denys Vlasenko5a49d282009-05-19 13:18:45 +020034# define __restrict
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000035# endif
36#endif
37
38/* Define macros for some gcc attributes. This permits us to use the
39 macros freely, and know that they will come into play for the
40 version of gcc in which they are supported. */
41
Denis Vlasenko98636eb2008-05-09 17:59:34 +000042#if !__GNUC_PREREQ(2,7)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000043# ifndef __attribute__
44# define __attribute__(x)
45# endif
46#endif
47
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000048#undef inline
Denis Vlasenkoa7189f02006-11-17 20:29:00 +000049#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000050/* it's a keyword */
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020051#elif __GNUC_PREREQ(2,7)
52# define inline __inline__
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000053#else
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020054# define inline
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000055#endif
56
57#ifndef __const
58# define __const const
59#endif
60
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000061#define UNUSED_PARAM __attribute__ ((__unused__))
62#define NORETURN __attribute__ ((__noreturn__))
Denys Vlasenko53283ad2009-11-02 14:20:34 +010063/* "The malloc attribute is used to tell the compiler that a function
64 * may be treated as if any non-NULL pointer it returns cannot alias
65 * any other pointer valid when the function returns. This will often
66 * improve optimization. Standard functions with this property include
67 * malloc and calloc. realloc-like functions have this property as long
68 * as the old pointer is never referred to (including comparing it
69 * to the new pointer) after the function returns a non-NULL value."
70 */
71#define RETURNS_MALLOC __attribute__ ((malloc))
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000072#define PACKED __attribute__ ((__packed__))
73#define ALIGNED(m) __attribute__ ((__aligned__(m)))
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +020074
Denis Vlasenko0f3a5802008-03-20 13:13:09 +000075/* __NO_INLINE__: some gcc's do not honor inlining! :( */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000076#if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
77# define ALWAYS_INLINE __attribute__ ((always_inline)) inline
Denis Vlasenko77f1ec12007-10-13 03:36:03 +000078/* I've seen a toolchain where I needed __noinline__ instead of noinline */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000079# define NOINLINE __attribute__((__noinline__))
80# if !ENABLE_WERROR
Denis Vlasenkoa60f84e2008-07-05 09:18:54 +000081# define DEPRECATED __attribute__ ((__deprecated__))
82# define UNUSED_PARAM_RESULT __attribute__ ((warn_unused_result))
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000083# else
Denys Vlasenko5a49d282009-05-19 13:18:45 +020084# define DEPRECATED
85# define UNUSED_PARAM_RESULT
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000086# endif
Denis Vlasenko98636eb2008-05-09 17:59:34 +000087#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +020088# define ALWAYS_INLINE inline
89# define NOINLINE
90# define DEPRECATED
91# define UNUSED_PARAM_RESULT
Denis Vlasenko98636eb2008-05-09 17:59:34 +000092#endif
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +000093
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +000094/* -fwhole-program makes all symbols local. The attribute externally_visible
95 forces a symbol global. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +000096#if __GNUC_PREREQ(4,1)
97# define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
Denis Vlasenko9b49a5e2007-10-11 10:05:36 +000098//__attribute__ ((__externally_visible__))
Denis Vlasenko98636eb2008-05-09 17:59:34 +000099#else
100# define EXTERNALLY_VISIBLE
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000101#endif
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +0000102
Denys Vlasenko98a4c7c2010-02-04 15:00:15 +0100103/* At 4.4 gcc become much more anal about this, need to use "aliased" types */
104#if __GNUC_PREREQ(4,4)
105# define FIX_ALIASING __attribute__((__may_alias__))
106#else
107# define FIX_ALIASING
108#endif
109
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +0000110/* We use __extension__ in some places to suppress -pedantic warnings
111 about GCC extensions. This feature didn't work properly before
112 gcc 2.8. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +0000113#if !__GNUC_PREREQ(2,8)
Bernhard Reutner-Fischer86f5c992006-01-22 22:55:11 +0000114# ifndef __extension__
115# define __extension__
116# endif
117#endif
118
Bernhard Reutner-Fischerb5f50ea2006-09-12 13:27:55 +0000119/* gcc-2.95 had no va_copy but only __va_copy. */
Denis Vlasenko98636eb2008-05-09 17:59:34 +0000120#if !__GNUC_PREREQ(3,0)
Bernhard Reutner-Fischerb5f50ea2006-09-12 13:27:55 +0000121# include <stdarg.h>
122# if !defined va_copy && defined __va_copy
123# define va_copy(d,s) __va_copy((d),(s))
124# endif
125#endif
126
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000127/* FAST_FUNC is a qualifier which (possibly) makes function call faster
128 * and/or smaller by using modified ABI. It is usually only needed
129 * on non-static, busybox internal functions. Recent versions of gcc
130 * optimize statics automatically. FAST_FUNC on static is required
131 * only if you need to match a function pointer's type */
Denis Vlasenkoac2b50e2008-06-27 04:30:48 +0000132#if __GNUC_PREREQ(3,0) && defined(i386) /* || defined(__x86_64__)? */
133/* stdcall makes callee to pop arguments from stack, not caller */
134# define FAST_FUNC __attribute__((regparm(3),stdcall))
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000135/* #elif ... - add your favorite arch today! */
Denis Vlasenkodefc1ea2008-06-27 02:52:20 +0000136#else
137# define FAST_FUNC
138#endif
139
Denis Vlasenkof81e8db2009-04-09 12:35:13 +0000140/* Make all declarations hidden (-fvisibility flag only affects definitions) */
141/* (don't include system headers after this until corresponding pop!) */
142#if __GNUC_PREREQ(4,1)
143# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
144# define POP_SAVED_FUNCTION_VISIBILITY _Pragma("GCC visibility pop")
145#else
146# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
147# define POP_SAVED_FUNCTION_VISIBILITY
148#endif
149
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000150/* ---- Endian Detection ------------------------------------ */
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000151
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200152#if defined(__digital__) && defined(__unix__)
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000153# include <sex.h>
154# define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN)
155# define __BYTE_ORDER BYTE_ORDER
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200156#elif defined __FreeBSD__
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200157# include <sys/resource.h> /* rlimit */
158# include <machine/endian.h>
159# define bswap_64 __bswap64
160# define bswap_32 __bswap32
161# define bswap_16 __bswap16
162# define __BIG_ENDIAN__ (_BYTE_ORDER == _BIG_ENDIAN)
Rob Landley15d20a02006-05-29 05:00:44 +0000163#elif !defined __APPLE__
164# include <byteswap.h>
165# include <endian.h>
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000166#endif
167
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200168#if defined(__BIG_ENDIAN__) && __BIG_ENDIAN__
Mike Frysingerf8855132006-03-28 02:35:56 +0000169# define BB_BIG_ENDIAN 1
170# define BB_LITTLE_ENDIAN 0
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000171#elif __BYTE_ORDER == __BIG_ENDIAN
Mike Frysingerf8855132006-03-28 02:35:56 +0000172# define BB_BIG_ENDIAN 1
173# define BB_LITTLE_ENDIAN 0
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200174#elif __BYTE_ORDER == __LITTLE_ENDIAN
Mike Frysingerf8855132006-03-28 02:35:56 +0000175# define BB_BIG_ENDIAN 0
176# define BB_LITTLE_ENDIAN 1
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200177#else
Dan Fandrich21a542d2009-10-27 11:05:00 +0100178# error "Can't determine endianness"
Rob Landley5cf7c2d2006-02-21 06:44:43 +0000179#endif
180
Denis Vlasenko9b0f6e12008-11-01 13:40:32 +0000181/* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */
Rob Landleybba7f082006-05-29 05:51:12 +0000182#if BB_BIG_ENDIAN
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200183# define SWAP_BE16(x) (x)
184# define SWAP_BE32(x) (x)
185# define SWAP_BE64(x) (x)
186# define SWAP_LE16(x) bswap_16(x)
187# define SWAP_LE32(x) bswap_32(x)
188# define SWAP_LE64(x) bswap_64(x)
Rob Landleybba7f082006-05-29 05:51:12 +0000189#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200190# define SWAP_BE16(x) bswap_16(x)
191# define SWAP_BE32(x) bswap_32(x)
192# define SWAP_BE64(x) bswap_64(x)
193# define SWAP_LE16(x) (x)
194# define SWAP_LE32(x) (x)
195# define SWAP_LE64(x) (x)
Rob Landleybba7f082006-05-29 05:51:12 +0000196#endif
197
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000198/* ---- Unaligned access ------------------------------------ */
199
Denis Vlasenkoefb545b2008-12-08 22:56:18 +0000200/* NB: unaligned parameter should be a pointer, aligned one -
201 * a lvalue. This makes it more likely to not swap them by mistake
202 */
Joakim Tjernlund80f42752010-02-11 08:48:15 +0100203#if defined(i386) || defined(__x86_64__) || defined(__powerpc__)
Denys Vlasenko12ca0802010-02-04 18:41:18 +0100204# include <stdint.h>
205typedef int bb__aliased_int FIX_ALIASING;
206typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
207typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
208# define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
209# define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
210# define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
Denys Vlasenko5fb38492010-02-06 22:48:10 +0100211# define move_to_unaligned16(u16p, v) (*(bb__aliased_uint16_t*)(u16p) = (v))
Denys Vlasenko12ca0802010-02-04 18:41:18 +0100212# define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
Denis Vlasenko42b8daf2008-06-27 03:55:18 +0000213/* #elif ... - add your favorite arch today! */
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000214#else
215/* performs reasonably well (gcc usually inlines memcpy here) */
Denys Vlasenko57be1ee2009-11-26 15:26:31 +0100216# define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200217# define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
218# define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
Denys Vlasenko5fb38492010-02-06 22:48:10 +0100219# define move_to_unaligned16(u16p, v) do { \
220 uint16_t __t = (v); \
221 memcpy((u16p), &__t, 4); \
222} while (0)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200223# define move_to_unaligned32(u32p, v) do { \
Denis Vlasenko3be23082009-04-17 22:20:44 +0000224 uint32_t __t = (v); \
225 memcpy((u32p), &__t, 4); \
226} while (0)
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000227#endif
228
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000229/* ---- Compiler dependent settings ------------------------- */
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000230
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200231#if (defined __digital__ && defined __unix__) \
232 || defined __APPLE__ || defined __FreeBSD__
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000233# undef HAVE_MNTENT_H
Mike Frysinger9412ec72008-02-07 22:41:33 +0000234# undef HAVE_SYS_STATFS_H
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000235#else
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000236# define HAVE_MNTENT_H 1
Mike Frysinger9412ec72008-02-07 22:41:33 +0000237# define HAVE_SYS_STATFS_H 1
Bernhard Reutner-Fischer8c69afd2008-01-29 10:33:34 +0000238#endif
Bernhard Reutner-Fischerbe862092007-03-19 15:15:06 +0000239
Bernhard Reutner-Fischere2e56c72006-05-19 11:54:02 +0000240/*----- Kernel versioning ------------------------------------*/
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000241
Bernhard Reutner-Fischere2e56c72006-05-19 11:54:02 +0000242#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
Bernhard Reutner-Fischere2e56c72006-05-19 11:54:02 +0000243
Denis Vlasenkofc9e1082008-05-26 17:32:35 +0000244/* ---- Miscellaneous --------------------------------------- */
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000245
Mike Frysingerb16b5bb2006-06-06 06:00:20 +0000246#if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000247 !defined(__dietlibc__) && \
248 !defined(_NEWLIB_VERSION) && \
249 !(defined __digital__ && defined __unix__)
Mike Frysingerb16b5bb2006-06-06 06:00:20 +0000250# error "Sorry, this libc version is not supported :("
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000251#endif
252
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000253/* Don't perpetuate e2fsck crap into the headers. Clean up e2fsck instead. */
Rob Landley18958e92006-06-13 18:28:33 +0000254
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000255#if defined __GLIBC__ || defined __UCLIBC__ \
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200256 || defined __dietlibc__ || defined _NEWLIB_VERSION
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200257# include <features.h>
Bernhard Reutner-Fischere00fc162006-05-26 13:10:10 +0000258#endif
259
Bernhard Reutner-Fischerc966ba42007-01-18 10:32:09 +0000260/* Size-saving "small" ints (arch-dependent) */
261#if defined(i386) || defined(__x86_64__) || defined(__mips__) || defined(__cris__)
262/* add other arches which benefit from this... */
263typedef signed char smallint;
264typedef unsigned char smalluint;
265#else
266/* for arches where byte accesses generate larger code: */
267typedef int smallint;
268typedef unsigned smalluint;
269#endif
270
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000271/* ISO C Standard: 7.16 Boolean type and values <stdbool.h> */
272#if (defined __digital__ && defined __unix__)
273/* old system without (proper) C99 support */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200274# define bool smalluint
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000275#else
276/* modern system, so use it */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200277# include <stdbool.h>
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000278#endif
279
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000280/* Try to defeat gcc's alignment of "char message[]"-like data */
281#if 1 /* if needed: !defined(arch1) && !defined(arch2) */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200282# define ALIGN1 __attribute__((aligned(1)))
283# define ALIGN2 __attribute__((aligned(2)))
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000284#else
285/* Arches which MUST have 2 or 4 byte alignment for everything are here */
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200286# define ALIGN1
287# define ALIGN2
Denis Vlasenko6ca409e2007-08-12 20:58:27 +0000288#endif
289
Bernhard Reutner-Fischera8e2e182007-01-20 21:27:18 +0000290
Mike Frysinger88407592006-07-20 19:31:07 +0000291/* uclibc does not implement daemon() for no-mmu systems.
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000292 * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
293 * For earlier versions there is no reliable way to check if we are building
Denis Vlasenko9e589212008-01-24 01:33:42 +0000294 * for a mmu-less system.
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000295 */
Denis Vlasenkod2c450c2008-01-08 20:32:12 +0000296#if ENABLE_NOMMU || \
297 (defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
298 __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__)
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200299# define BB_MMU 0
300# define USE_FOR_NOMMU(...) __VA_ARGS__
301# define USE_FOR_MMU(...)
Denis Vlasenko473dae02007-04-11 07:04:23 +0000302#else
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200303# define BB_MMU 1
304# define USE_FOR_NOMMU(...)
305# define USE_FOR_MMU(...) __VA_ARGS__
Bernhard Reutner-Fischer507cd752006-05-31 10:04:03 +0000306#endif
307
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200308/* Don't use lchown with glibc older than 2.1.x */
309#if defined(__GLIBC__) && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1
Mike Frysinger88407592006-07-20 19:31:07 +0000310# define lchown chown
311#endif
312
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200313#if defined(__digital__) && defined(__unix__)
Rob Landley8fba99f2006-05-27 22:08:01 +0000314
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000315# include <standards.h>
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000316# include <inttypes.h>
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000317# define PRIu32 "u"
Denis Vlasenko0de3c552007-04-12 12:31:02 +0000318/* use legacy setpgrp(pid_t,pid_t) for now. move to platform.c */
Denys Vlasenko245a4f82009-11-07 01:31:14 +0100319# define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me, __me); } while (0)
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000320# if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
321# define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
322# endif
323# if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
324# define ADJ_FREQUENCY MOD_FREQUENCY
325# endif
326# if !defined ADJ_TIMECONST && defined MOD_TIMECONST
327# define ADJ_TIMECONST MOD_TIMECONST
328# endif
329# if !defined ADJ_TICK && defined MOD_CLKB
330# define ADJ_TICK MOD_CLKB
331# endif
Rob Landley8fba99f2006-05-27 22:08:01 +0000332
Denys Vlasenko9b1b62a2009-07-05 03:34:12 +0200333#else
Denis Vlasenko6ebb2f52008-12-03 10:46:12 +0000334
335# define bb_setpgrp() setpgrp()
336
Rob Landley18958e92006-06-13 18:28:33 +0000337#endif
338
Dan Fandrich21a542d2009-10-27 11:05:00 +0100339#if defined(__GLIBC__)
340# define fdprintf dprintf
341#endif
342
343#if defined(__dietlibc__)
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100344# undef HAVE_STRCHRNUL
Dan Fandrich21a542d2009-10-27 11:05:00 +0100345#endif
346
347#if defined(__WATCOMC__)
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100348# undef HAVE_FDPRINTF
349# undef HAVE_MEMRCHR
350# undef HAVE_MKDTEMP
351# undef HAVE_SETBIT
352# undef HAVE_STRCASESTR
353# undef HAVE_STRCHRNUL
354# undef HAVE_STRSIGNAL
355# undef HAVE_VASPRINTF
Dan Fandrich21a542d2009-10-27 11:05:00 +0100356#endif
357
358#if defined(__FreeBSD__)
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100359# undef HAVE_STRCHRNUL
Dan Fandrich21a542d2009-10-27 11:05:00 +0100360#endif
361
362/*
363 * Now, define prototypes for all the functions defined in platform.c
364 * These must come after all the HAVE_* macros are defined (or not)
365 */
366
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100367#ifndef HAVE_FDPRINTF
368extern int fdprintf(int fd, const char *format, ...);
369#endif
370
371#ifndef HAVE_MEMRCHR
372extern void *memrchr(const void *s, int c, size_t n) FAST_FUNC;
373#endif
374
375#ifndef HAVE_MKDTEMP
376extern char *mkdtemp(char *template) FAST_FUNC;
377#endif
378
379#ifndef HAVE_SETBIT
380# define setbit(a, b) ((a)[(b) >> 3] |= 1 << ((b) & 7))
381# define clrbit(a, b) ((a)[(b) >> 3] &= ~(1 << ((b) & 7)))
382#endif
383
384#ifndef HAVE_STRCASESTR
385extern char *strcasestr(const char *s, const char *pattern) FAST_FUNC;
386#endif
387
Dan Fandrich21a542d2009-10-27 11:05:00 +0100388#ifndef HAVE_STRCHRNUL
389extern char *strchrnul(const char *s, int c) FAST_FUNC;
390#endif
391
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100392#ifndef HAVE_STRSIGNAL
393/* Not exactly the same: instead of "Stopped" it shows "STOP" etc */
394# define strsignal(sig) get_signame(sig)
Dan Fandrich21a542d2009-10-27 11:05:00 +0100395#endif
396
Dan Fandrichfe4e23f2009-11-01 04:01:30 +0100397#ifndef HAVE_VASPRINTF
398extern int vasprintf(char **string_ptr, const char *format, va_list p) FAST_FUNC;
Dan Fandrich21a542d2009-10-27 11:05:00 +0100399#endif
Denys Vlasenko5a49d282009-05-19 13:18:45 +0200400
Denis Vlasenkof81e8db2009-04-09 12:35:13 +0000401#endif