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297 lines
6.0 KiB
C
297 lines
6.0 KiB
C
#ifndef __endian_h
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#define __endian_h
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#ifndef CONFIG
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#define CONFIG "config.h"
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#endif // CONFIG
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#include CONFIG
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//
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// Unaligned access
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//
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#define UAA16(p, i) (((PACKED16*)p)->val[i])
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#define UAA32(p, i) (((PACKED32*)p)->val[i])
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#define UAA64(p, i) (((PACKED64*)p)->val[i])
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#define UA64(p) UAA64(p, 0)
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#define UA32(p) UAA32(p, 0)
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#define UA16(p) UAA16(p, 0)
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//
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//Byteswap: Use compiler support if available
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//
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#ifdef __has_builtin // Clang supports this
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#if __has_builtin(__builtin_bswap16)
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#define BS16(x) __builtin_bswap16(x)
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#endif
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#if __has_builtin(__builtin_bswap32)
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#define BS32(x) __builtin_bswap32(x)
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#endif
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#if __has_builtin(__builtin_bswap64)
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#define BS64(x) __builtin_bswap64(x)
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#endif
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#endif // has_builtin
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#ifdef __GNUC__ // GNU C >= 4.3 has bswap32 and bswap64. GNU C >= 4.8 also has bswap16
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#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ > 2)
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#ifndef BS32
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#define BS32(x) __builtin_bswap32(x)
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#endif
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#ifndef BS64
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#define BS64(x) __builtin_bswap64(x)
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#endif
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#if (__GNUC__ > 4) || (__GNUC_MINOR__ > 7)
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#ifndef BS16
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#define BS16(x) __builtin_bswap16(x)
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#endif
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#endif // GNU C > 4.7
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#endif // __GNUC__ > 4
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#endif // __GNUC__
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//
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// Byteorder
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//
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#if defined(__linux__) || defined(__GLIBC__) || defined(__CYGWIN__)
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#include <endian.h>
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#include <byteswap.h>
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#ifndef BS16
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#define BS16(x) bswap_16(x)
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#endif
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#ifndef BS32
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#define BS32(x) bswap_32(x)
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#endif
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#ifndef BS64
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#define BS64(x) bswap_64(x)
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#endif
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#elif defined(__sun__)
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#include <sys/byteorder.h>
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#ifndef BS16
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#define BS16(x) BSWAP_16(x)
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#endif
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#ifndef BS32
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#define BS32(x) BSWAP_32(x)
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#endif
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#ifndef BS64
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#define BS64(x) BSWAP_64(x)
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#endif
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#define __LITTLE_ENDIAN 1234
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#define __BIG_ENDIAN 4321
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#ifdef _LITTLE_ENDIAN
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#define __BYTE_ORDER __LITTLE_ENDIAN
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#else
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#define __BYTE_ORDER __BIG_ENDIAN
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#endif
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#elif __minix__ || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || defined(__OpenBSD__)
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#include <sys/types.h>
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#include <sys/endian.h>
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#define __BYTE_ORDER _BYTE_ORDER
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#define __LITTLE_ENDIAN _LITTLE_ENDIAN
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#define __BIG_ENDIAN _BIG_ENDIAN
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#ifdef __OpenBSD__
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#ifndef BS16
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#define BS16 swap16
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#endif
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#ifndef BS32
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#define BS32 swap32
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#endif
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#ifndef BS64
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#define BS64 swap64
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#endif
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#else // !__OpenBSD__
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#ifndef BS16
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#define BS16 bswap16
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#endif
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#ifndef BS32
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#define BS32 bswap32
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#endif
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#ifndef BS64
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#define BS64 bswap64
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#endif
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#endif // !__OpenBSD__
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#elif defined(__APPLE__)
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#include <sys/types.h>
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#include <machine/endian.h>
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#include <libkern/OSByteOrder.h>
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#define __BYTE_ORDER _BYTE_ORDER
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#define __LITTLE_ENDIAN _LITTLE_ENDIAN
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#define __BIG_ENDIAN _BIG_ENDIAN
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#ifndef BS16
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#define BS16 OSSwapInt16
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#endif
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#ifndef BS32
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#define BS32 OSSwapInt32
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#endif
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#ifndef BS64
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#define BS64 OSSwapInt64
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#endif
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#elif defined(_WIN32)
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#define __LITTLE_ENDIAN 1234
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#define __BIG_ENDIAN 4321
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#define __BYTE_ORDER __LITTLE_ENDIAN
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#include <stdlib.h>
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#ifndef BS16
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#define BS16 _byteswap_ushort
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#endif
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#ifndef BS32
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#define BS32 _byteswap_ulong
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#endif
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#ifndef BS64
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#define BS64 _byteswap_uint64
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#endif
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#endif // Byteorder in different OS
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#if defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN) \
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&& defined(BS16) && defined(BS32) && defined(BS64)
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define __BE16(x) BS16(x)
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#define __LE16(x) (x)
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#define __BE32(x) BS32(x)
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#define __LE32(x) (x)
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#define __BE64(x) BS64(x)
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#define __LE64(x) (x)
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#else // __BYTE_ORDER == __BIG_ENDIAN
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#define __BE16(x) (x)
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#define __LE16(x) BS16(x)
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#define __BE32(x) (x)
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#define __LE32(x) BS32(x)
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#define __BE64(x) (x)
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#define __LE64(x) BS64(x)
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#endif // __BYTE_ORDER
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#define PUT_UAA64BE(p, v, i) ( UAA64(p, i) = __BE64(v) )
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#define PUT_UAA32BE(p, v, i) ( UAA32(p, i) = __BE32(v) )
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#define PUT_UAA16BE(p, v, i) ( UAA16(p, i) = __BE16(v) )
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#define PUT_UAA64LE(p, v, i) ( UAA64(p, i) = __LE64(v) )
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#define PUT_UAA32LE(p, v, i) ( UAA32(p, i) = __LE32(v) )
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#define PUT_UAA16LE(p, v, i) ( UAA16(p, i) = __LE16(v) )
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#define GET_UAA64BE(p, i) __BE64(UAA64(p, i))
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#define GET_UAA32BE(p, i) __BE32(UAA32(p, i))
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#define GET_UAA16BE(p, i) __BE16(UAA16(p, i))
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#define GET_UAA64LE(p, i) __LE64(UAA64(p, i))
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#define GET_UAA32LE(p, i) __LE32(UAA32(p, i))
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#define GET_UAA16LE(p, i) __LE16(UAA16(p, i))
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#define BE16(x) __BE16(x)
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#define LE16(x) __LE16(x)
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#define BE32(x) __BE32(x)
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#define LE32(x) __LE32(x)
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#define BE64(x) __BE64(x)
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#define LE64(x) __LE64(x)
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#else // ! defined(__BYTE_ORDER)
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extern void PUT_UAA64BE(void *p, unsigned long long v, unsigned int i);
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extern void PUT_UAA32BE(void *p, unsigned int v, unsigned int i);
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extern void PUT_UAA16BE(void *p, unsigned short v, unsigned int i);
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extern void PUT_UAA64LE(void *p, unsigned long long v, unsigned int i);
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extern void PUT_UAA32LE(void *p, unsigned int v, unsigned int i);
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extern void PUT_UAA16LE(void *p, unsigned short v, unsigned int i);
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extern unsigned long long GET_UAA64BE(void *p, unsigned int i);
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extern unsigned int GET_UAA32BE(void *p, unsigned int i);
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extern unsigned short GET_UAA16BE(void *p, unsigned int i);
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extern unsigned long long GET_UAA64LE(void *p, unsigned int i);
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extern unsigned int GET_UAA32LE(void *p, unsigned int i);
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extern unsigned short GET_UAA16LE(void *p, unsigned int i);
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extern unsigned short BE16(unsigned short x);
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extern unsigned short LE16(unsigned short x);
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extern unsigned int BE32(unsigned int x);
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extern unsigned int LE32(unsigned int x);
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extern unsigned long long BE64(unsigned long long x);
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extern unsigned long long LE64(unsigned long long x);
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#endif // defined(__BYTE_ORDER)
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#define PUT_UA64BE(p, v) PUT_UAA64BE(p, v, 0)
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#define PUT_UA32BE(p, v) PUT_UAA32BE(p, v, 0)
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#define PUT_UA16BE(p, v) PUT_UAA16BE(p, v, 0)
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#define PUT_UA64LE(p, v) PUT_UAA64LE(p, v, 0)
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#define PUT_UA32LE(p, v) PUT_UAA32LE(p, v, 0)
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#define PUT_UA16LE(p, v) PUT_UAA16LE(p, v, 0)
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#define GET_UA64BE(p) GET_UAA64BE(p, 0)
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#define GET_UA32BE(p) GET_UAA32BE(p, 0)
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#define GET_UA16BE(p) GET_UAA16BE(p, 0)
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#define GET_UA64LE(p) GET_UAA64LE(p, 0)
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#define GET_UA32LE(p) GET_UAA32LE(p, 0)
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#define GET_UA16LE(p) GET_UAA16LE(p, 0)
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#endif // __endian_h
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