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42 lines
1.4 KiB
42 lines
1.4 KiB
#ifndef INTREADWRITE_H |
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#define INTREADWRITE_H |
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#ifdef __GNUC__ |
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struct unaligned_64 { uint64_t l; } __attribute__((packed)); |
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struct unaligned_32 { uint32_t l; } __attribute__((packed)); |
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struct unaligned_16 { uint16_t l; } __attribute__((packed)); |
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#define LD16(a) (((const struct unaligned_16 *) (a))->l) |
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#define LD32(a) (((const struct unaligned_32 *) (a))->l) |
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#define LD64(a) (((const struct unaligned_64 *) (a))->l) |
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#define ST16(a, b) (((struct unaligned_16 *) (a))->l) = (b) |
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#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b) |
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#else /* __GNUC__ */ |
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#define LD16(a) (*((uint16_t*)(a))) |
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#define LD32(a) (*((uint32_t*)(a))) |
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#define LD64(a) (*((uint64_t*)(a))) |
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#define ST16(a, b) *((uint16_t*)(a)) = (b) |
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#define ST32(a, b) *((uint32_t*)(a)) = (b) |
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#endif /* !__GNUC__ */ |
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/* endian macros */ |
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#if !defined(BE_16) || !defined(BE_32) || !defined(LE_16) || !defined(LE_32) |
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#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1]) |
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#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \ |
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(((uint8_t*)(x))[1] << 16) | \ |
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(((uint8_t*)(x))[2] << 8) | \ |
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((uint8_t*)(x))[3]) |
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#define LE_16(x) ((((uint8_t*)(x))[1] << 8) | ((uint8_t*)(x))[0]) |
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#define LE_32(x) ((((uint8_t*)(x))[3] << 24) | \ |
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(((uint8_t*)(x))[2] << 16) | \ |
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(((uint8_t*)(x))[1] << 8) | \ |
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((uint8_t*)(x))[0]) |
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#endif |
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#endif /* INTREADWRITE_H */
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