Bernhard Reutner-Fischer | b1629b1 | 2006-05-19 19:29:19 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 2 | /* |
| 3 | Copyright 2006, Bernhard Fischer |
| 4 | |
| 5 | Licensed under the GPL v2 or later, see the file LICENSE in this tarball. |
| 6 | */ |
| 7 | #ifndef __PLATFORM_H |
| 8 | #define __PLATFORM_H 1 |
| 9 | |
| 10 | /* Convenience macros to test the version of gcc. */ |
| 11 | #undef __GNUC_PREREQ |
| 12 | #if defined __GNUC__ && defined __GNUC_MINOR__ |
| 13 | # define __GNUC_PREREQ(maj, min) \ |
Denis Vlasenko | 9213a9e | 2006-09-17 16:28:10 +0000 | [diff] [blame] | 14 | ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 15 | #else |
| 16 | # define __GNUC_PREREQ(maj, min) 0 |
| 17 | #endif |
| 18 | |
| 19 | /* __restrict is known in EGCS 1.2 and above. */ |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 20 | #if !__GNUC_PREREQ(2,92) |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 21 | # ifndef __restrict |
| 22 | # define __restrict /* Ignore */ |
| 23 | # endif |
| 24 | #endif |
| 25 | |
| 26 | /* Define macros for some gcc attributes. This permits us to use the |
| 27 | macros freely, and know that they will come into play for the |
| 28 | version of gcc in which they are supported. */ |
| 29 | |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 30 | #if !__GNUC_PREREQ(2,7) |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 31 | # ifndef __attribute__ |
| 32 | # define __attribute__(x) |
| 33 | # endif |
| 34 | #endif |
| 35 | |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 36 | #undef inline |
Denis Vlasenko | a7189f0 | 2006-11-17 20:29:00 +0000 | [diff] [blame] | 37 | #if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 38 | /* it's a keyword */ |
| 39 | #else |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 40 | # if __GNUC_PREREQ(2,7) |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 41 | # define inline __inline__ |
| 42 | # else |
| 43 | # define inline |
| 44 | # endif |
| 45 | #endif |
| 46 | |
| 47 | #ifndef __const |
| 48 | # define __const const |
| 49 | #endif |
| 50 | |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 51 | #define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) |
| 52 | #define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) |
| 53 | #define ATTRIBUTE_PACKED __attribute__ ((__packed__)) |
| 54 | #define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m))) |
Denis Vlasenko | 0f3a580 | 2008-03-20 13:13:09 +0000 | [diff] [blame] | 55 | /* __NO_INLINE__: some gcc's do not honor inlining! :( */ |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 56 | #if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__) |
| 57 | # define ALWAYS_INLINE __attribute__ ((always_inline)) inline |
Denis Vlasenko | 77f1ec1 | 2007-10-13 03:36:03 +0000 | [diff] [blame] | 58 | /* I've seen a toolchain where I needed __noinline__ instead of noinline */ |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 59 | # define NOINLINE __attribute__((__noinline__)) |
| 60 | # if !ENABLE_WERROR |
| 61 | # define ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__)) |
| 62 | # define ATTRIBUTE_UNUSED_RESULT __attribute__ ((warn_unused_result)) |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 63 | # else |
Bernhard Reutner-Fischer | 51f7ab6 | 2007-04-10 18:40:05 +0000 | [diff] [blame] | 64 | # define ATTRIBUTE_DEPRECATED /* n/a */ |
Bernhard Reutner-Fischer | 9a33780 | 2007-06-21 10:39:20 +0000 | [diff] [blame] | 65 | # define ATTRIBUTE_UNUSED_RESULT /* n/a */ |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 66 | # endif |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 67 | #else |
| 68 | # define ALWAYS_INLINE inline /* n/a */ |
| 69 | # define NOINLINE /* n/a */ |
| 70 | # define ATTRIBUTE_DEPRECATED /* n/a */ |
| 71 | # define ATTRIBUTE_UNUSED_RESULT /* n/a */ |
| 72 | #endif |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 73 | |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 74 | /* -fwhole-program makes all symbols local. The attribute externally_visible |
| 75 | forces a symbol global. */ |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 76 | #if __GNUC_PREREQ(4,1) |
| 77 | # define EXTERNALLY_VISIBLE __attribute__(( visibility("default") )) |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 78 | //__attribute__ ((__externally_visible__)) |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 79 | #else |
| 80 | # define EXTERNALLY_VISIBLE |
| 81 | #endif /* GNUC >= 4.1 */ |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 82 | |
| 83 | /* We use __extension__ in some places to suppress -pedantic warnings |
| 84 | about GCC extensions. This feature didn't work properly before |
| 85 | gcc 2.8. */ |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 86 | #if !__GNUC_PREREQ(2,8) |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 87 | # ifndef __extension__ |
| 88 | # define __extension__ |
| 89 | # endif |
| 90 | #endif |
| 91 | |
Bernhard Reutner-Fischer | b5f50ea | 2006-09-12 13:27:55 +0000 | [diff] [blame] | 92 | /* gcc-2.95 had no va_copy but only __va_copy. */ |
Denis Vlasenko | 98636eb | 2008-05-09 17:59:34 +0000 | [diff] [blame] | 93 | #if !__GNUC_PREREQ(3,0) |
Bernhard Reutner-Fischer | b5f50ea | 2006-09-12 13:27:55 +0000 | [diff] [blame] | 94 | # include <stdarg.h> |
| 95 | # if !defined va_copy && defined __va_copy |
| 96 | # define va_copy(d,s) __va_copy((d),(s)) |
| 97 | # endif |
| 98 | #endif |
| 99 | |
Denis Vlasenko | 42b8daf | 2008-06-27 03:55:18 +0000 | [diff] [blame] | 100 | /* FAST_FUNC is a qualifier which (possibly) makes function call faster |
| 101 | * and/or smaller by using modified ABI. It is usually only needed |
| 102 | * on non-static, busybox internal functions. Recent versions of gcc |
| 103 | * optimize statics automatically. FAST_FUNC on static is required |
| 104 | * only if you need to match a function pointer's type */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 105 | #if __GNUC_PREREQ(3,0) && defined(i386) |
| 106 | /* || defined(__x86_64__)? */ |
| 107 | # define FAST_FUNC __attribute__((regparm(3))) |
Denis Vlasenko | 42b8daf | 2008-06-27 03:55:18 +0000 | [diff] [blame] | 108 | /* #elif ... - add your favorite arch today! */ |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 109 | #else |
| 110 | # define FAST_FUNC |
| 111 | #endif |
| 112 | |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 113 | /* ---- Endian Detection ------------------------------------ */ |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 114 | |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 115 | #if (defined __digital__ && defined __unix__) |
| 116 | # include <sex.h> |
| 117 | # define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN) |
| 118 | # define __BYTE_ORDER BYTE_ORDER |
Rob Landley | 15d20a0 | 2006-05-29 05:00:44 +0000 | [diff] [blame] | 119 | #elif !defined __APPLE__ |
| 120 | # include <byteswap.h> |
| 121 | # include <endian.h> |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 122 | #endif |
| 123 | |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 124 | #ifdef __BIG_ENDIAN__ |
Mike Frysinger | f885513 | 2006-03-28 02:35:56 +0000 | [diff] [blame] | 125 | # define BB_BIG_ENDIAN 1 |
| 126 | # define BB_LITTLE_ENDIAN 0 |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 127 | #elif __BYTE_ORDER == __BIG_ENDIAN |
Mike Frysinger | f885513 | 2006-03-28 02:35:56 +0000 | [diff] [blame] | 128 | # define BB_BIG_ENDIAN 1 |
| 129 | # define BB_LITTLE_ENDIAN 0 |
Bernhard Reutner-Fischer | ed7bb62 | 2006-02-23 14:25:15 +0000 | [diff] [blame] | 130 | #else |
Mike Frysinger | f885513 | 2006-03-28 02:35:56 +0000 | [diff] [blame] | 131 | # define BB_BIG_ENDIAN 0 |
| 132 | # define BB_LITTLE_ENDIAN 1 |
Rob Landley | 5cf7c2d | 2006-02-21 06:44:43 +0000 | [diff] [blame] | 133 | #endif |
| 134 | |
Rob Landley | bba7f08 | 2006-05-29 05:51:12 +0000 | [diff] [blame] | 135 | #if BB_BIG_ENDIAN |
Rob Landley | 752f0a6 | 2006-05-30 06:28:03 +0000 | [diff] [blame] | 136 | #define SWAP_BE16(x) (x) |
| 137 | #define SWAP_BE32(x) (x) |
| 138 | #define SWAP_BE64(x) (x) |
Rob Landley | bba7f08 | 2006-05-29 05:51:12 +0000 | [diff] [blame] | 139 | #define SWAP_LE16(x) bswap_16(x) |
| 140 | #define SWAP_LE32(x) bswap_32(x) |
| 141 | #define SWAP_LE64(x) bswap_64(x) |
| 142 | #else |
| 143 | #define SWAP_BE16(x) bswap_16(x) |
| 144 | #define SWAP_BE32(x) bswap_32(x) |
| 145 | #define SWAP_BE64(x) bswap_64(x) |
Rob Landley | 752f0a6 | 2006-05-30 06:28:03 +0000 | [diff] [blame] | 146 | #define SWAP_LE16(x) (x) |
| 147 | #define SWAP_LE32(x) (x) |
| 148 | #define SWAP_LE64(x) (x) |
Rob Landley | bba7f08 | 2006-05-29 05:51:12 +0000 | [diff] [blame] | 149 | #endif |
| 150 | |
Denis Vlasenko | fc9e108 | 2008-05-26 17:32:35 +0000 | [diff] [blame] | 151 | /* ---- Unaligned access ------------------------------------ */ |
| 152 | |
| 153 | /* parameter is supposed to be an uint32_t* ptr */ |
Denis Vlasenko | 42b8daf | 2008-06-27 03:55:18 +0000 | [diff] [blame] | 154 | #if defined(i386) || defined(__x86_64__) |
Denis Vlasenko | fc9e108 | 2008-05-26 17:32:35 +0000 | [diff] [blame] | 155 | #define get_unaligned_u32p(u32p) (*(u32p)) |
Denis Vlasenko | 42b8daf | 2008-06-27 03:55:18 +0000 | [diff] [blame] | 156 | /* #elif ... - add your favorite arch today! */ |
Denis Vlasenko | fc9e108 | 2008-05-26 17:32:35 +0000 | [diff] [blame] | 157 | #else |
| 158 | /* performs reasonably well (gcc usually inlines memcpy here) */ |
| 159 | #define get_unaligned_u32p(u32p) ({ uint32_t __t; memcpy(&__t, (u32p), 4); __t; }) |
| 160 | #endif |
| 161 | |
Rob Landley | dae6aa2 | 2006-03-09 22:39:08 +0000 | [diff] [blame] | 162 | /* ---- Networking ------------------------------------------ */ |
Denis Vlasenko | fc9e108 | 2008-05-26 17:32:35 +0000 | [diff] [blame] | 163 | |
Rob Landley | dae6aa2 | 2006-03-09 22:39:08 +0000 | [diff] [blame] | 164 | #ifndef __APPLE__ |
Mike Frysinger | f885513 | 2006-03-28 02:35:56 +0000 | [diff] [blame] | 165 | # include <arpa/inet.h> |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 166 | # ifndef __socklen_t_defined |
| 167 | typedef int socklen_t; |
| 168 | # endif |
Rob Landley | dae6aa2 | 2006-03-09 22:39:08 +0000 | [diff] [blame] | 169 | #else |
Mike Frysinger | f885513 | 2006-03-28 02:35:56 +0000 | [diff] [blame] | 170 | # include <netinet/in.h> |
Rob Landley | dae6aa2 | 2006-03-09 22:39:08 +0000 | [diff] [blame] | 171 | #endif |
| 172 | |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 173 | /* ---- Compiler dependent settings ------------------------- */ |
Denis Vlasenko | fc9e108 | 2008-05-26 17:32:35 +0000 | [diff] [blame] | 174 | |
Mike Frysinger | 22876c7 | 2008-02-07 22:10:07 +0000 | [diff] [blame] | 175 | #if (defined __digital__ && defined __unix__) || defined __APPLE__ |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 176 | # undef HAVE_MNTENT_H |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 177 | # undef HAVE_SYS_STATFS_H |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 178 | #else |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 179 | # define HAVE_MNTENT_H 1 |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 180 | # define HAVE_SYS_STATFS_H 1 |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 181 | #endif /* ___digital__ && __unix__ */ |
| 182 | |
Bernhard Reutner-Fischer | be86209 | 2007-03-19 15:15:06 +0000 | [diff] [blame] | 183 | /* linux/loop.h relies on __u64. Make sure we have that as a proper type |
| 184 | * until userspace is widely fixed. */ |
Bernhard Reutner-Fischer | 8c69afd | 2008-01-29 10:33:34 +0000 | [diff] [blame] | 185 | #if (defined __INTEL_COMPILER && !defined __GNUC__) || \ |
| 186 | (defined __GNUC__ && defined __STRICT_ANSI__) |
Bernhard Reutner-Fischer | be86209 | 2007-03-19 15:15:06 +0000 | [diff] [blame] | 187 | __extension__ typedef __signed__ long long __s64; |
| 188 | __extension__ typedef unsigned long long __u64; |
Bernhard Reutner-Fischer | 8c69afd | 2008-01-29 10:33:34 +0000 | [diff] [blame] | 189 | #endif |
Bernhard Reutner-Fischer | be86209 | 2007-03-19 15:15:06 +0000 | [diff] [blame] | 190 | |
Bernhard Reutner-Fischer | e2e56c7 | 2006-05-19 11:54:02 +0000 | [diff] [blame] | 191 | /*----- Kernel versioning ------------------------------------*/ |
Denis Vlasenko | fc9e108 | 2008-05-26 17:32:35 +0000 | [diff] [blame] | 192 | |
Bernhard Reutner-Fischer | e2e56c7 | 2006-05-19 11:54:02 +0000 | [diff] [blame] | 193 | #define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c)) |
Bernhard Reutner-Fischer | e2e56c7 | 2006-05-19 11:54:02 +0000 | [diff] [blame] | 194 | |
Denis Vlasenko | fc9e108 | 2008-05-26 17:32:35 +0000 | [diff] [blame] | 195 | /* ---- Miscellaneous --------------------------------------- */ |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 196 | |
Mike Frysinger | b16b5bb | 2006-06-06 06:00:20 +0000 | [diff] [blame] | 197 | #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \ |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 198 | !defined(__dietlibc__) && \ |
| 199 | !defined(_NEWLIB_VERSION) && \ |
| 200 | !(defined __digital__ && defined __unix__) |
Mike Frysinger | b16b5bb | 2006-06-06 06:00:20 +0000 | [diff] [blame] | 201 | # error "Sorry, this libc version is not supported :(" |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 202 | #endif |
| 203 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 204 | /* Don't perpetuate e2fsck crap into the headers. Clean up e2fsck instead. */ |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 205 | |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 206 | #if defined __GLIBC__ || defined __UCLIBC__ \ |
| 207 | || defined __dietlibc__ || defined _NEWLIB_VERSION |
| 208 | #include <features.h> |
| 209 | #define HAVE_FEATURES_H |
| 210 | #include <stdint.h> |
| 211 | #define HAVE_STDINT_H |
Mike Frysinger | 9412ec7 | 2008-02-07 22:41:33 +0000 | [diff] [blame] | 212 | #elif !defined __APPLE__ |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 213 | /* Largest integral types. */ |
| 214 | #if __BIG_ENDIAN__ |
Denis Vlasenko | 8746885 | 2007-04-13 23:22:00 +0000 | [diff] [blame] | 215 | typedef long intmax_t; |
| 216 | typedef unsigned long uintmax_t; |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 217 | #else |
| 218 | __extension__ |
Denis Vlasenko | 8746885 | 2007-04-13 23:22:00 +0000 | [diff] [blame] | 219 | typedef long long intmax_t; |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 220 | __extension__ |
Denis Vlasenko | 8746885 | 2007-04-13 23:22:00 +0000 | [diff] [blame] | 221 | typedef unsigned long long uintmax_t; |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 222 | #endif |
| 223 | #endif |
| 224 | |
Bernhard Reutner-Fischer | c966ba4 | 2007-01-18 10:32:09 +0000 | [diff] [blame] | 225 | /* Size-saving "small" ints (arch-dependent) */ |
| 226 | #if defined(i386) || defined(__x86_64__) || defined(__mips__) || defined(__cris__) |
| 227 | /* add other arches which benefit from this... */ |
| 228 | typedef signed char smallint; |
| 229 | typedef unsigned char smalluint; |
| 230 | #else |
| 231 | /* for arches where byte accesses generate larger code: */ |
| 232 | typedef int smallint; |
| 233 | typedef unsigned smalluint; |
| 234 | #endif |
| 235 | |
Bernhard Reutner-Fischer | a8e2e18 | 2007-01-20 21:27:18 +0000 | [diff] [blame] | 236 | /* ISO C Standard: 7.16 Boolean type and values <stdbool.h> */ |
| 237 | #if (defined __digital__ && defined __unix__) |
| 238 | /* old system without (proper) C99 support */ |
| 239 | #define bool smalluint |
| 240 | #else |
| 241 | /* modern system, so use it */ |
| 242 | #include <stdbool.h> |
| 243 | #endif |
| 244 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 245 | /* Try to defeat gcc's alignment of "char message[]"-like data */ |
| 246 | #if 1 /* if needed: !defined(arch1) && !defined(arch2) */ |
| 247 | #define ALIGN1 __attribute__((aligned(1))) |
| 248 | #define ALIGN2 __attribute__((aligned(2))) |
| 249 | #else |
| 250 | /* Arches which MUST have 2 or 4 byte alignment for everything are here */ |
| 251 | #define ALIGN1 |
| 252 | #define ALIGN2 |
| 253 | #endif |
| 254 | |
Bernhard Reutner-Fischer | a8e2e18 | 2007-01-20 21:27:18 +0000 | [diff] [blame] | 255 | |
Mike Frysinger | 8840759 | 2006-07-20 19:31:07 +0000 | [diff] [blame] | 256 | /* uclibc does not implement daemon() for no-mmu systems. |
Bernhard Reutner-Fischer | 507cd75 | 2006-05-31 10:04:03 +0000 | [diff] [blame] | 257 | * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably. |
| 258 | * For earlier versions there is no reliable way to check if we are building |
Denis Vlasenko | 9e58921 | 2008-01-24 01:33:42 +0000 | [diff] [blame] | 259 | * for a mmu-less system. |
Bernhard Reutner-Fischer | 507cd75 | 2006-05-31 10:04:03 +0000 | [diff] [blame] | 260 | */ |
Denis Vlasenko | d2c450c | 2008-01-08 20:32:12 +0000 | [diff] [blame] | 261 | #if ENABLE_NOMMU || \ |
| 262 | (defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \ |
| 263 | __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__) |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 264 | #define BB_MMU 0 |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 265 | #define USE_FOR_NOMMU(...) __VA_ARGS__ |
| 266 | #define USE_FOR_MMU(...) |
| 267 | #else |
| 268 | #define BB_MMU 1 |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 269 | #define USE_FOR_NOMMU(...) |
| 270 | #define USE_FOR_MMU(...) __VA_ARGS__ |
Bernhard Reutner-Fischer | 507cd75 | 2006-05-31 10:04:03 +0000 | [diff] [blame] | 271 | #endif |
| 272 | |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 273 | /* Platforms that haven't got dprintf need to implement fdprintf() in |
| 274 | * libbb. This would require a platform.c. It's not going to be cleaned |
| 275 | * out of the tree, so stop saying it should be. */ |
Denis Vlasenko | 7cfecc4 | 2006-12-18 22:32:45 +0000 | [diff] [blame] | 276 | #if !defined(__dietlibc__) |
| 277 | /* Needed for: glibc */ |
| 278 | /* Not needed for: dietlibc */ |
| 279 | /* Others: ?? (add as needed) */ |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 280 | #define fdprintf dprintf |
Denis Vlasenko | 7cfecc4 | 2006-12-18 22:32:45 +0000 | [diff] [blame] | 281 | #endif |
| 282 | |
| 283 | #if defined(__dietlibc__) |
Denis Vlasenko | 3ad5d0c | 2007-06-12 20:54:54 +0000 | [diff] [blame] | 284 | static ALWAYS_INLINE char* strchrnul(const char *s, char c) |
Denis Vlasenko | ac678ec | 2007-04-16 22:32:04 +0000 | [diff] [blame] | 285 | { |
Denis Vlasenko | 7cfecc4 | 2006-12-18 22:32:45 +0000 | [diff] [blame] | 286 | while (*s && *s != c) ++s; |
| 287 | return (char*)s; |
| 288 | } |
Denis Vlasenko | c8e6e35 | 2006-12-18 22:10:24 +0000 | [diff] [blame] | 289 | #endif |
Rob Landley | c020f5f | 2006-05-21 18:28:13 +0000 | [diff] [blame] | 290 | |
Denis Vlasenko | 473dae0 | 2007-04-11 07:04:23 +0000 | [diff] [blame] | 291 | /* Don't use lchown with glibc older than 2.1.x ... uClibc lacks it */ |
Mike Frysinger | 8840759 | 2006-07-20 19:31:07 +0000 | [diff] [blame] | 292 | #if (defined __GLIBC__ && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1) || \ |
| 293 | defined __UC_LIBC__ |
| 294 | # define lchown chown |
| 295 | #endif |
| 296 | |
Bernhard Reutner-Fischer | e00fc16 | 2006-05-26 13:10:10 +0000 | [diff] [blame] | 297 | #if (defined __digital__ && defined __unix__) |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 298 | #include <standards.h> |
| 299 | #define HAVE_STANDARDS_H |
| 300 | #include <inttypes.h> |
| 301 | #define HAVE_INTTYPES_H |
| 302 | #define PRIu32 "u" |
Rob Landley | 8fba99f | 2006-05-27 22:08:01 +0000 | [diff] [blame] | 303 | |
Denis Vlasenko | 0de3c55 | 2007-04-12 12:31:02 +0000 | [diff] [blame] | 304 | /* use legacy setpgrp(pid_t,pid_t) for now. move to platform.c */ |
| 305 | #define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me,__me); } while (0) |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 306 | |
Rob Landley | 8fba99f | 2006-05-27 22:08:01 +0000 | [diff] [blame] | 307 | #if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET |
| 308 | #define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET) |
| 309 | #endif |
| 310 | #if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY |
| 311 | #define ADJ_FREQUENCY MOD_FREQUENCY |
| 312 | #endif |
| 313 | #if !defined ADJ_TIMECONST && defined MOD_TIMECONST |
| 314 | #define ADJ_TIMECONST MOD_TIMECONST |
| 315 | #endif |
| 316 | #if !defined ADJ_TICK && defined MOD_CLKB |
| 317 | #define ADJ_TICK MOD_CLKB |
| 318 | #endif |
| 319 | |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 320 | #else |
Denis Vlasenko | 0de3c55 | 2007-04-12 12:31:02 +0000 | [diff] [blame] | 321 | #define bb_setpgrp() setpgrp() |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 322 | #endif |
| 323 | |
Rob Landley | 22d26fc | 2006-06-15 15:49:36 +0000 | [diff] [blame] | 324 | #if defined(__linux__) |
| 325 | #include <sys/mount.h> |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 326 | /* Make sure we have all the new mount flags we actually try to use. */ |
Rob Landley | e3781b7 | 2006-08-08 01:39:49 +0000 | [diff] [blame] | 327 | #ifndef MS_BIND |
| 328 | #define MS_BIND (1<<12) |
| 329 | #endif |
| 330 | #ifndef MS_MOVE |
| 331 | #define MS_MOVE (1<<13) |
| 332 | #endif |
| 333 | #ifndef MS_RECURSIVE |
| 334 | #define MS_RECURSIVE (1<<14) |
| 335 | #endif |
| 336 | #ifndef MS_SILENT |
| 337 | #define MS_SILENT (1<<15) |
| 338 | #endif |
| 339 | |
Denis Vlasenko | 6ca409e | 2007-08-12 20:58:27 +0000 | [diff] [blame] | 340 | /* The shared subtree stuff, which went in around 2.6.15. */ |
Rob Landley | e3781b7 | 2006-08-08 01:39:49 +0000 | [diff] [blame] | 341 | #ifndef MS_UNBINDABLE |
| 342 | #define MS_UNBINDABLE (1<<17) |
| 343 | #endif |
| 344 | #ifndef MS_PRIVATE |
| 345 | #define MS_PRIVATE (1<<18) |
| 346 | #endif |
| 347 | #ifndef MS_SLAVE |
| 348 | #define MS_SLAVE (1<<19) |
| 349 | #endif |
| 350 | #ifndef MS_SHARED |
| 351 | #define MS_SHARED (1<<20) |
| 352 | #endif |
| 353 | |
Denis Vlasenko | 9213a9e | 2006-09-17 16:28:10 +0000 | [diff] [blame] | 354 | |
Rob Landley | 7077ea3 | 2006-06-29 19:00:12 +0000 | [diff] [blame] | 355 | #if !defined(BLKSSZGET) |
| 356 | #define BLKSSZGET _IO(0x12, 104) |
| 357 | #endif |
Rob Landley | 22d26fc | 2006-06-15 15:49:36 +0000 | [diff] [blame] | 358 | #if !defined(BLKGETSIZE64) |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 359 | #define BLKGETSIZE64 _IOR(0x12,114,size_t) |
| 360 | #endif |
Rob Landley | 22d26fc | 2006-06-15 15:49:36 +0000 | [diff] [blame] | 361 | #endif |
Rob Landley | 18958e9 | 2006-06-13 18:28:33 +0000 | [diff] [blame] | 362 | |
Bernhard Reutner-Fischer | 86f5c99 | 2006-01-22 22:55:11 +0000 | [diff] [blame] | 363 | #endif /* platform.h */ |