/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

#include <linux/module.h>
#include <linux/string.h>

void *memset(void *s, int c, size_t count)
{
        void *xs = s;
        size_t temp;

        if (!count)
                return xs;
        c &= 0xff;
        c |= c << 8;
        c |= c << 16;
        if ((long)s & 1) {
                char *cs = s;
                *cs++ = c;
                s = cs;
                count--;
        }
        if (count > 2 && (long)s & 2) {
                short *ss = s;
                *ss++ = c;
                s = ss;
                count -= 2;
        }
        temp = count >> 2;
        if (temp) {
                long *ls = s;
#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
                for (; temp; temp--)
                        *ls++ = c;
#else
                size_t temp1;
                asm volatile (
                        "       movel %1,%2\n"
                        "       andw  #7,%2\n"
                        "       lsrl  #3,%1\n"
                        "       negw  %2\n"
                        "       jmp   %%pc@(2f,%2:w:2)\n"
                        "1:     movel %3,%0@+\n"
                        "       movel %3,%0@+\n"
                        "       movel %3,%0@+\n"
                        "       movel %3,%0@+\n"
                        "       movel %3,%0@+\n"
                        "       movel %3,%0@+\n"
                        "       movel %3,%0@+\n"
                        "       movel %3,%0@+\n"
                        "2:     dbra  %1,1b\n"
                        "       clrw  %1\n"
                        "       subql #1,%1\n"
                        "       jpl   1b"
                        : "=a" (ls), "=d" (temp), "=&d" (temp1)
                        : "d" (c), "0" (ls), "1" (temp));
#endif
                s = ls;
        }
        if (count & 2) {
                short *ss = s;
                *ss++ = c;
                s = ss;
        }
        if (count & 1) {
                char *cs = s;
                *cs = c;
        }
        return xs;
}
EXPORT_SYMBOL(memset);