original_kernel/arch/csky/abiv1/memset.c

38 lines
571 B
C

// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
#include <linux/types.h>
void *memset(void *dest, int c, size_t l)
{
char *d = dest;
int ch = c & 0xff;
int tmp = (ch | ch << 8 | ch << 16 | ch << 24);
while (((uintptr_t)d & 0x3) && l--)
*d++ = ch;
while (l >= 16) {
*(((u32 *)d)) = tmp;
*(((u32 *)d)+1) = tmp;
*(((u32 *)d)+2) = tmp;
*(((u32 *)d)+3) = tmp;
l -= 16;
d += 16;
}
while (l > 3) {
*(((u32 *)d)) = tmp;
l -= 4;
d += 4;
}
while (l) {
*d = ch;
l--;
d++;
}
return dest;
}