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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [sparc/] [lib/] [memset.c] - Rev 1624
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/* linux/arch/sparc/lib/memset.c * * This is from GNU libc. */ #include <linux/types.h> #define op_t unsigned long int #define OPSIZ (sizeof(op_t)) typedef unsigned char byte; void *memset(void *dstpp, char c, size_t len) { long int dstp = (long int) dstpp; if (len >= 8) { size_t xlen; op_t cccc; cccc = (unsigned char) c; cccc |= cccc << 8; cccc |= cccc << 16; /* There are at least some bytes to set. No need to test for LEN == 0 in this alignment loop. */ while (dstp % OPSIZ != 0) { ((byte *) dstp)[0] = c; dstp += 1; len -= 1; } /* Write 8 `op_t' per iteration until less * than 8 `op_t' remain. */ xlen = len / (OPSIZ * 8); while (xlen > 0) { ((op_t *) dstp)[0] = cccc; ((op_t *) dstp)[1] = cccc; ((op_t *) dstp)[2] = cccc; ((op_t *) dstp)[3] = cccc; ((op_t *) dstp)[4] = cccc; ((op_t *) dstp)[5] = cccc; ((op_t *) dstp)[6] = cccc; ((op_t *) dstp)[7] = cccc; dstp += 8 * OPSIZ; xlen -= 1; } len %= OPSIZ * 8; /* Write 1 `op_t' per iteration until less than * OPSIZ bytes remain. */ xlen = len / OPSIZ; while (xlen > 0) { ((op_t *) dstp)[0] = cccc; dstp += OPSIZ; xlen -= 1; } len %= OPSIZ; } /* Write the last few bytes. */ while (len > 0) { ((byte *) dstp)[0] = c; dstp += 1; len -= 1; } return dstpp; }
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