u16 hndcrc16(u8 *pdata, /* pointer to array of data to process */
uint nbytes, /* number of input data bytes to process */
u16 crc /* either CRC16_INIT_VALUE or previous return value */
) {
while (nbytes-- > 0)
CRC_INNER_LOOP(16, crc, *pdata++);
return crc;
}
uint32
hndcrc32(
uint8 *pdata, /* pointer to array of data to process */
uint nbytes, /* number of input data bytes to process */
uint32 crc /* either CRC32_INIT_VALUE or previous return value */
)
{
uint8 *pend;
#ifdef __mips__
uint8 tmp[4];
ulong *tptr = (ulong *)tmp;
/* in case the beginning of the buffer isn't aligned */
pend = (uint8 *)((uint)(pdata + 3) & 0xfffffffc);
nbytes -= (pend - pdata);
while (pdata < pend)
CRC_INNER_LOOP(32, crc, *pdata++);
/* handle bulk of data as 32-bit words */
pend = pdata + (nbytes & 0xfffffffc);
while (pdata < pend) {
*tptr = *(ulong *)pdata;
pdata += sizeof(ulong *);
CRC_INNER_LOOP(32, crc, tmp[0]);
CRC_INNER_LOOP(32, crc, tmp[1]);
CRC_INNER_LOOP(32, crc, tmp[2]);
CRC_INNER_LOOP(32, crc, tmp[3]);
}
/* 1-3 bytes at end of buffer */
pend = pdata + (nbytes & 0x03);
while (pdata < pend)
CRC_INNER_LOOP(32, crc, *pdata++);
#else
pend = pdata + nbytes;
while (pdata < pend)
CRC_INNER_LOOP(32, crc, *pdata++);
#endif /* __mips__ */
return crc;
}
