| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Copyright 2006, Bernhard Reutner-Fischer
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| 4 | *
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| 5 | * Licensed under GPLv2 or later, see file LICENSE in this source tree.
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| 6 | */
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| 7 | #ifndef BB_PLATFORM_H
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| 8 | #define BB_PLATFORM_H 1
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| 9 |
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| 10 |
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| 11 | /* Convenience macros to test the version of gcc. */
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| 12 | #undef __GNUC_PREREQ
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| 13 | #if defined __GNUC__ && defined __GNUC_MINOR__
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| 14 | # define __GNUC_PREREQ(maj, min) \
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| 15 | ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
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| 16 | #else
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| 17 | # define __GNUC_PREREQ(maj, min) 0
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| 18 | #endif
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| 19 |
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| 20 | /* __restrict is known in EGCS 1.2 and above. */
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| 21 | #if !__GNUC_PREREQ(2,92)
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| 22 | # ifndef __restrict
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| 23 | # define __restrict
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| 24 | # endif
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| 25 | #endif
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| 26 |
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| 27 | #if !__GNUC_PREREQ(2,7)
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| 28 | # ifndef __attribute__
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| 29 | # define __attribute__(x)
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| 30 | # endif
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| 31 | #endif
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| 32 |
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| 33 | #undef inline
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| 34 | #if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
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| 35 | /* it's a keyword */
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| 36 | #elif __GNUC_PREREQ(2,7)
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| 37 | # define inline __inline__
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| 38 | #else
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| 39 | # define inline
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| 40 | #endif
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| 41 |
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| 42 | #ifndef __const
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| 43 | # define __const const
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| 44 | #endif
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| 45 |
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| 46 | #define UNUSED_PARAM __attribute__ ((__unused__))
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| 47 | #define NORETURN __attribute__ ((__noreturn__))
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| 48 | /* "The malloc attribute is used to tell the compiler that a function
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| 49 | * may be treated as if any non-NULL pointer it returns cannot alias
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| 50 | * any other pointer valid when the function returns. This will often
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| 51 | * improve optimization. Standard functions with this property include
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| 52 | * malloc and calloc. realloc-like functions have this property as long
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| 53 | * as the old pointer is never referred to (including comparing it
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| 54 | * to the new pointer) after the function returns a non-NULL value."
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| 55 | */
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| 56 | #define RETURNS_MALLOC __attribute__ ((malloc))
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| 57 | #define PACKED __attribute__ ((__packed__))
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| 58 | #define ALIGNED(m) __attribute__ ((__aligned__(m)))
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| 59 |
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| 60 | /* __NO_INLINE__: some gcc's do not honor inlining! :( */
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| 61 | #if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
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| 62 | # define ALWAYS_INLINE __attribute__ ((always_inline)) inline
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| 63 | /* I've seen a toolchain where I needed __noinline__ instead of noinline */
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| 64 | # define NOINLINE __attribute__((__noinline__))
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| 65 | # if !ENABLE_WERROR
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| 66 | # define DEPRECATED __attribute__ ((__deprecated__))
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| 67 | # define UNUSED_PARAM_RESULT __attribute__ ((warn_unused_result))
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| 68 | # else
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| 69 | # define DEPRECATED
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| 70 | # define UNUSED_PARAM_RESULT
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| 71 | # endif
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| 72 | #else
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| 73 | # define ALWAYS_INLINE inline
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| 74 | # define NOINLINE
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| 75 | # define DEPRECATED
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| 76 | # define UNUSED_PARAM_RESULT
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| 77 | #endif
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| 78 |
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| 79 | /* used by unit test machinery to run registration functions before calling main() */
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| 80 | #define INIT_FUNC __attribute__ ((constructor))
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| 81 |
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| 82 | /* -fwhole-program makes all symbols local. The attribute externally_visible
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| 83 | * forces a symbol global. */
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| 84 | #if __GNUC_PREREQ(4,1)
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| 85 | # define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
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| 86 | //__attribute__ ((__externally_visible__))
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| 87 | #else
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| 88 | # define EXTERNALLY_VISIBLE
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| 89 | #endif
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| 90 |
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| 91 | /* At 4.4 gcc become much more anal about this, need to use "aliased" types */
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| 92 | #if __GNUC_PREREQ(4,4)
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| 93 | # define FIX_ALIASING __attribute__((__may_alias__))
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| 94 | #else
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| 95 | # define FIX_ALIASING
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| 96 | #endif
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| 97 |
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| 98 | /* We use __extension__ in some places to suppress -pedantic warnings
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| 99 | * about GCC extensions. This feature didn't work properly before
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| 100 | * gcc 2.8. */
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| 101 | #if !__GNUC_PREREQ(2,8)
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| 102 | # ifndef __extension__
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| 103 | # define __extension__
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| 104 | # endif
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| 105 | #endif
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| 106 |
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| 107 | /* FAST_FUNC is a qualifier which (possibly) makes function call faster
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| 108 | * and/or smaller by using modified ABI. It is usually only needed
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| 109 | * on non-static, busybox internal functions. Recent versions of gcc
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| 110 | * optimize statics automatically. FAST_FUNC on static is required
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| 111 | * only if you need to match a function pointer's type */
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| 112 | #if __GNUC_PREREQ(3,0) && defined(i386) /* || defined(__x86_64__)? */
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| 113 | /* stdcall makes callee to pop arguments from stack, not caller */
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| 114 | # define FAST_FUNC __attribute__((regparm(3),stdcall))
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| 115 | /* #elif ... - add your favorite arch today! */
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| 116 | #else
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| 117 | # define FAST_FUNC
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| 118 | #endif
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| 119 |
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| 120 | /* Make all declarations hidden (-fvisibility flag only affects definitions) */
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| 121 | /* (don't include system headers after this until corresponding pop!) */
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| 122 | #if __GNUC_PREREQ(4,1) && !defined(__CYGWIN__)
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| 123 | # define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
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| 124 | # define POP_SAVED_FUNCTION_VISIBILITY _Pragma("GCC visibility pop")
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| 125 | #else
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| 126 | # define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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| 127 | # define POP_SAVED_FUNCTION_VISIBILITY
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| 128 | #endif
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| 129 |
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| 130 | /* gcc-2.95 had no va_copy but only __va_copy. */
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| 131 | #if !__GNUC_PREREQ(3,0)
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| 132 | # include <stdarg.h>
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| 133 | # if !defined va_copy && defined __va_copy
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| 134 | # define va_copy(d,s) __va_copy((d),(s))
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| 135 | # endif
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| 136 | #endif
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| 137 |
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| 138 |
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| 139 | /* ---- Endian Detection ------------------------------------ */
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| 140 |
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| 141 | #include <limits.h>
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| 142 | #if defined(__digital__) && defined(__unix__)
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| 143 | # include <sex.h>
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| 144 | #elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
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| 145 | || defined(__APPLE__)
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| 146 | # include <sys/resource.h> /* rlimit */
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| 147 | # include <machine/endian.h>
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| 148 | # define bswap_64 __bswap64
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| 149 | # define bswap_32 __bswap32
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| 150 | # define bswap_16 __bswap16
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| 151 | #else
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| 152 | # include <byteswap.h>
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| 153 | # include <endian.h>
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| 154 | #endif
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| 155 |
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| 156 | #if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN
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| 157 | # define BB_BIG_ENDIAN 1
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| 158 | # define BB_LITTLE_ENDIAN 0
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| 159 | #elif defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN
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| 160 | # define BB_BIG_ENDIAN 0
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| 161 | # define BB_LITTLE_ENDIAN 1
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| 162 | #elif defined(_BYTE_ORDER) && _BYTE_ORDER == _BIG_ENDIAN
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| 163 | # define BB_BIG_ENDIAN 1
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| 164 | # define BB_LITTLE_ENDIAN 0
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| 165 | #elif defined(_BYTE_ORDER) && _BYTE_ORDER == _LITTLE_ENDIAN
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| 166 | # define BB_BIG_ENDIAN 0
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| 167 | # define BB_LITTLE_ENDIAN 1
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| 168 | #elif defined(BYTE_ORDER) && BYTE_ORDER == BIG_ENDIAN
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| 169 | # define BB_BIG_ENDIAN 1
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| 170 | # define BB_LITTLE_ENDIAN 0
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| 171 | #elif defined(BYTE_ORDER) && BYTE_ORDER == LITTLE_ENDIAN
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| 172 | # define BB_BIG_ENDIAN 0
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| 173 | # define BB_LITTLE_ENDIAN 1
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| 174 | #elif defined(__386__)
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| 175 | # define BB_BIG_ENDIAN 0
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| 176 | # define BB_LITTLE_ENDIAN 1
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| 177 | #else
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| 178 | # error "Can't determine endianness"
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| 179 | #endif
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| 180 |
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| 181 | #if ULONG_MAX > 0xffffffff
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| 182 | # define bb_bswap_64(x) bswap_64(x)
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| 183 | #endif
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| 184 |
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| 185 | /* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */
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| 186 | #if BB_BIG_ENDIAN
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| 187 | # define SWAP_BE16(x) (x)
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| 188 | # define SWAP_BE32(x) (x)
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| 189 | # define SWAP_BE64(x) (x)
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| 190 | # define SWAP_LE16(x) bswap_16(x)
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| 191 | # define SWAP_LE32(x) bswap_32(x)
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| 192 | # define SWAP_LE64(x) bb_bswap_64(x)
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| 193 | # define IF_BIG_ENDIAN(...) __VA_ARGS__
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| 194 | # define IF_LITTLE_ENDIAN(...)
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| 195 | #else
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| 196 | # define SWAP_BE16(x) bswap_16(x)
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| 197 | # define SWAP_BE32(x) bswap_32(x)
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| 198 | # define SWAP_BE64(x) bb_bswap_64(x)
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| 199 | # define SWAP_LE16(x) (x)
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| 200 | # define SWAP_LE32(x) (x)
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| 201 | # define SWAP_LE64(x) (x)
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| 202 | # define IF_BIG_ENDIAN(...)
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| 203 | # define IF_LITTLE_ENDIAN(...) __VA_ARGS__
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| 204 | #endif
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| 205 |
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| 206 |
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| 207 | /* ---- Unaligned access ------------------------------------ */
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| 208 |
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| 209 | #include <stdint.h>
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| 210 | typedef int bb__aliased_int FIX_ALIASING;
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| 211 | typedef long bb__aliased_long FIX_ALIASING;
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| 212 | typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
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| 213 | typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
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| 214 | typedef uint64_t bb__aliased_uint64_t FIX_ALIASING;
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| 215 |
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| 216 | /* NB: unaligned parameter should be a pointer, aligned one -
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| 217 | * a lvalue. This makes it more likely to not swap them by mistake
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| 218 | */
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| 219 | #if defined(i386) || defined(__x86_64__) || defined(__powerpc__)
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| 220 | # define BB_UNALIGNED_MEMACCESS_OK 1
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| 221 | # define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
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| 222 | # define move_from_unaligned_long(v, longp) ((v) = *(bb__aliased_long*)(longp))
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| 223 | # define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
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| 224 | # define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
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| 225 | # define move_to_unaligned16(u16p, v) (*(bb__aliased_uint16_t*)(u16p) = (v))
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| 226 | # define move_to_unaligned32(u32p, v) (*(bb__aliased_uint32_t*)(u32p) = (v))
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| 227 | /* #elif ... - add your favorite arch today! */
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| 228 | #else
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| 229 | # define BB_UNALIGNED_MEMACCESS_OK 0
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| 230 | /* performs reasonably well (gcc usually inlines memcpy here) */
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| 231 | # define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
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| 232 | # define move_from_unaligned_long(v, longp) (memcpy(&(v), (longp), sizeof(long)))
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| 233 | # define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
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| 234 | # define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
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| 235 | # define move_to_unaligned16(u16p, v) do { \
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| 236 | uint16_t __t = (v); \
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| 237 | memcpy((u16p), &__t, 2); \
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| 238 | } while (0)
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| 239 | # define move_to_unaligned32(u32p, v) do { \
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| 240 | uint32_t __t = (v); \
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| 241 | memcpy((u32p), &__t, 4); \
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| 242 | } while (0)
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| 243 | #endif
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| 244 |
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| 245 |
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| 246 | /* ---- Size-saving "small" ints (arch-dependent) ----------- */
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| 247 |
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| 248 | #if defined(i386) || defined(__x86_64__) || defined(__mips__) || defined(__cris__)
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| 249 | /* add other arches which benefit from this... */
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| 250 | typedef signed char smallint;
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| 251 | typedef unsigned char smalluint;
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| 252 | #else
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| 253 | /* for arches where byte accesses generate larger code: */
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| 254 | typedef int smallint;
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| 255 | typedef unsigned smalluint;
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| 256 | #endif
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| 257 |
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| 258 | /* ISO C Standard: 7.16 Boolean type and values <stdbool.h> */
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| 259 | #if (defined __digital__ && defined __unix__)
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| 260 | /* old system without (proper) C99 support */
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| 261 | # define bool smalluint
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| 262 | #else
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| 263 | /* modern system, so use it */
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| 264 | # include <stdbool.h>
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| 265 | #endif
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| 266 |
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| 267 |
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| 268 | /*----- Kernel versioning ------------------------------------*/
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| 269 |
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| 270 | #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
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| 271 |
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| 272 | #ifdef __UCLIBC__
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| 273 | # define UCLIBC_VERSION KERNEL_VERSION(__UCLIBC_MAJOR__, __UCLIBC_MINOR__, __UCLIBC_SUBLEVEL__)
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| 274 | #else
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| 275 | # define UCLIBC_VERSION 0
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| 276 | #endif
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| 277 |
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| 278 |
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| 279 | /* ---- Miscellaneous --------------------------------------- */
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| 280 |
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| 281 | #if defined __GLIBC__ \
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| 282 | || defined __UCLIBC__ \
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| 283 | || defined __dietlibc__ \
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| 284 | || defined __BIONIC__ \
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| 285 | || defined _NEWLIB_VERSION
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| 286 | # include <features.h>
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| 287 | #endif
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| 288 |
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| 289 | /* Define bb_setpgrp */
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| 290 | #if defined(__digital__) && defined(__unix__)
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| 291 | /* use legacy setpgrp(pid_t, pid_t) for now. move to platform.c */
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| 292 | # define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me, __me); } while (0)
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| 293 | #else
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| 294 | # define bb_setpgrp() setpgrp()
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| 295 | #endif
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| 296 |
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| 297 | /* fdprintf is more readable, we used it before dprintf was standardized */
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| 298 | #include <unistd.h>
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| 299 | #define fdprintf dprintf
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| 300 |
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| 301 | /* Useful for defeating gcc's alignment of "char message[]"-like data */
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| 302 | #if !defined(__s390__)
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| 303 | /* on s390[x], non-word-aligned data accesses require larger code */
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| 304 | # define ALIGN1 __attribute__((aligned(1)))
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| 305 | # define ALIGN2 __attribute__((aligned(2)))
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| 306 | # define ALIGN4 __attribute__((aligned(4)))
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| 307 | #else
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| 308 | /* Arches which MUST have 2 or 4 byte alignment for everything are here */
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| 309 | # define ALIGN1
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| 310 | # define ALIGN2
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| 311 | # define ALIGN4
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| 312 | #endif
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| 313 |
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| 314 | /*
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| 315 | * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
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| 316 | * For earlier versions there is no reliable way to check if we are building
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| 317 | * for a mmu-less system.
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| 318 | */
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| 319 | #if ENABLE_NOMMU || \
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| 320 | (defined __UCLIBC__ && \
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| 321 | UCLIBC_VERSION > KERNEL_VERSION(0, 9, 28) && \
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| 322 | !defined __ARCH_USE_MMU__)
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| 323 | # define BB_MMU 0
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| 324 | # define USE_FOR_NOMMU(...) __VA_ARGS__
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| 325 | # define USE_FOR_MMU(...)
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| 326 | #else
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| 327 | # define BB_MMU 1
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| 328 | # define USE_FOR_NOMMU(...)
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| 329 | # define USE_FOR_MMU(...) __VA_ARGS__
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| 330 | #endif
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| 331 |
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| 332 | #if defined(__digital__) && defined(__unix__)
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| 333 | # include <standards.h>
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| 334 | # include <inttypes.h>
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| 335 | # define PRIu32 "u"
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| 336 | # if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
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| 337 | # define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
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| 338 | # endif
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| 339 | # if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
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| 340 | # define ADJ_FREQUENCY MOD_FREQUENCY
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| 341 | # endif
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| 342 | # if !defined ADJ_TIMECONST && defined MOD_TIMECONST
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| 343 | # define ADJ_TIMECONST MOD_TIMECONST
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| 344 | # endif
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| 345 | # if !defined ADJ_TICK && defined MOD_CLKB
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| 346 | # define ADJ_TICK MOD_CLKB
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| 347 | # endif
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| 348 | #endif
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| 349 |
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| 350 | #if defined(__CYGWIN__)
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| 351 | # define MAXSYMLINKS SYMLOOP_MAX
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| 352 | #endif
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| 353 |
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| 354 | #if defined(ANDROID) || defined(__ANDROID__)
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| 355 | # define BB_ADDITIONAL_PATH ":/system/sbin:/system/bin:/system/xbin"
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| 356 | # define SYS_ioprio_set __NR_ioprio_set
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| 357 | # define SYS_ioprio_get __NR_ioprio_get
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| 358 | #endif
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| 359 |
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| 360 |
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| 361 | /* ---- Who misses what? ------------------------------------ */
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| 362 |
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| 363 | /* Assume all these functions and header files exist by default.
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| 364 | * Platforms where it is not true will #undef them below.
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| 365 | */
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| 366 | #define HAVE_CLEARENV 1
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| 367 | #define HAVE_FDATASYNC 1
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| 368 | #define HAVE_DPRINTF 1
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| 369 | #define HAVE_MEMRCHR 1
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| 370 | #define HAVE_MKDTEMP 1
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|---|
| 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 0
|
|---|
| 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
|
|---|
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