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Annotation of qemu/roms/ipxe/src/include/byteswap.h, revision 1.1.1.1

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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