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