c44a193d0d
Add FILE_LICENCE declarations to almost all files that make up the various standard builds of gPXE.
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
#ifndef ETHERBOOT_BYTESWAP_H
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#define ETHERBOOT_BYTESWAP_H
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FILE_LICENCE ( GPL2_OR_LATER );
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#include "endian.h"
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#include "bits/byteswap.h"
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#define __bswap_constant_16(x) \
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((uint16_t)((((uint16_t)(x) & 0x00ff) << 8) | \
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(((uint16_t)(x) & 0xff00) >> 8)))
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#define __bswap_constant_32(x) \
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((uint32_t)((((uint32_t)(x) & 0x000000ffU) << 24) | \
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(((uint32_t)(x) & 0x0000ff00U) << 8) | \
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(((uint32_t)(x) & 0x00ff0000U) >> 8) | \
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(((uint32_t)(x) & 0xff000000U) >> 24)))
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#define __bswap_constant_64(x) \
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((uint64_t)((((uint64_t)(x) & 0x00000000000000ffULL) << 56) | \
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(((uint64_t)(x) & 0x000000000000ff00ULL) << 40) | \
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(((uint64_t)(x) & 0x0000000000ff0000ULL) << 24) | \
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(((uint64_t)(x) & 0x00000000ff000000ULL) << 8) | \
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(((uint64_t)(x) & 0x000000ff00000000ULL) >> 8) | \
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(((uint64_t)(x) & 0x0000ff0000000000ULL) >> 24) | \
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(((uint64_t)(x) & 0x00ff000000000000ULL) >> 40) | \
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(((uint64_t)(x) & 0xff00000000000000ULL) >> 56)))
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#define __bswap_16(x) \
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((uint16_t)(__builtin_constant_p(x) ? \
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__bswap_constant_16(x) : \
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__bswap_variable_16(x)))
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#define __bswap_32(x) \
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((uint32_t)(__builtin_constant_p(x) ? \
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__bswap_constant_32(x) : \
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__bswap_variable_32(x)))
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#define __bswap_64(x) \
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((uint64_t)(__builtin_constant_p(x) ? \
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__bswap_constant_64(x) : \
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__bswap_variable_64(x)))
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#include "little_bswap.h"
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#endif
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#if __BYTE_ORDER == __BIG_ENDIAN
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#include "big_bswap.h"
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#endif
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/* Make routines available to all */
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#define swap64(x) __bswap_64(x)
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#define swap32(x) __bswap_32(x)
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#define swap16(x) __bswap_16(x)
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#define bswap_64(x) __bswap_64(x)
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#define bswap_32(x) __bswap_32(x)
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#define bswap_16(x) __bswap_16(x)
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#endif /* ETHERBOOT_BYTESWAP_H */
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