mirror of https://github.com/F-Stack/f-stack.git
48 lines
998 B
C
48 lines
998 B
C
/*-
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* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
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* code or tables extracted from it, as desired without restriction.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_GSB_CRC32_H_
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#define _SYS_GSB_CRC32_H_
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#include <sys/types.h>
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#ifdef _KERNEL
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extern const uint32_t crc32_tab[];
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static __inline uint32_t
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crc32_raw(const void *buf, size_t size, uint32_t crc)
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{
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const uint8_t *p = (const uint8_t *)buf;
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while (size--)
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crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
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return (crc);
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}
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static __inline uint32_t
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crc32(const void *buf, size_t size)
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{
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uint32_t crc;
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crc = crc32_raw(buf, size, ~0U);
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return (crc ^ ~0U);
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}
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uint32_t calculate_crc32c(uint32_t crc32c, const unsigned char *buffer,
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unsigned int length);
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#endif
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#if defined(__amd64__) || defined(__i386__)
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uint32_t sse42_crc32c(uint32_t, const unsigned char *, unsigned);
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#endif
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#if defined(__aarch64__)
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uint32_t armv8_crc32c(uint32_t, const unsigned char *, unsigned int);
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#endif
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#endif /* !_SYS_GSB_CRC32_H_ */
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