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Annotation of qemu/roms/ipxe/src/include/byteswap.h, revision 1.1

1.1     ! root        1: #ifndef ETHERBOOT_BYTESWAP_H
        !             2: #define ETHERBOOT_BYTESWAP_H
        !             3: 
        !             4: FILE_LICENCE ( GPL2_OR_LATER );
        !             5: 
        !             6: #include "endian.h"
        !             7: #include "bits/byteswap.h"
        !             8: 
        !             9: #define __bswap_constant_16(x) \
        !            10:        ((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \
        !            11:                    (((uint16_t)(x) & 0xff00) >> 8)))
        !            12: 
        !            13: #define __bswap_constant_32(x) \
        !            14:        ((uint32_t)((((uint32_t)(x) & 0x000000ffU) << 24) | \
        !            15:                    (((uint32_t)(x) & 0x0000ff00U) <<  8) | \
        !            16:                    (((uint32_t)(x) & 0x00ff0000U) >>  8) | \
        !            17:                    (((uint32_t)(x) & 0xff000000U) >> 24)))
        !            18: 
        !            19: #define __bswap_constant_64(x) \
        !            20:        ((uint64_t)((((uint64_t)(x) & 0x00000000000000ffULL) << 56) | \
        !            21:                    (((uint64_t)(x) & 0x000000000000ff00ULL) << 40) | \
        !            22:                    (((uint64_t)(x) & 0x0000000000ff0000ULL) << 24) | \
        !            23:                    (((uint64_t)(x) & 0x00000000ff000000ULL) <<  8) | \
        !            24:                    (((uint64_t)(x) & 0x000000ff00000000ULL) >>  8) | \
        !            25:                    (((uint64_t)(x) & 0x0000ff0000000000ULL) >> 24) | \
        !            26:                    (((uint64_t)(x) & 0x00ff000000000000ULL) >> 40) | \
        !            27:                    (((uint64_t)(x) & 0xff00000000000000ULL) >> 56)))
        !            28: 
        !            29: #define __bswap_16(x) \
        !            30:        ((uint16_t)(__builtin_constant_p(x) ? \
        !            31:        __bswap_constant_16(x) : \
        !            32:        __bswap_variable_16(x)))
        !            33: 
        !            34: #define __bswap_32(x) \
        !            35:        ((uint32_t)(__builtin_constant_p(x) ? \
        !            36:        __bswap_constant_32(x) : \
        !            37:        __bswap_variable_32(x)))
        !            38: 
        !            39: #define __bswap_64(x) \
        !            40:        ((uint64_t)(__builtin_constant_p(x) ? \
        !            41:        __bswap_constant_64(x) : \
        !            42:        __bswap_variable_64(x)))
        !            43: 
        !            44: #if __BYTE_ORDER == __LITTLE_ENDIAN
        !            45: #include "little_bswap.h"
        !            46: #endif
        !            47: #if __BYTE_ORDER == __BIG_ENDIAN
        !            48: #include "big_bswap.h"
        !            49: #endif
        !            50: 
        !            51: /* Make routines available to all */
        !            52: #define swap64(x)      __bswap_64(x)
        !            53: #define swap32(x)      __bswap_32(x)
        !            54: #define swap16(x)      __bswap_16(x)
        !            55: #define bswap_64(x)    __bswap_64(x)
        !            56: #define bswap_32(x)    __bswap_32(x)
        !            57: #define bswap_16(x)    __bswap_16(x)
        !            58:        
        !            59: #endif /* ETHERBOOT_BYTESWAP_H */

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