| #include <linux/types.h> |
| |
| void * memset(void * s, int c, size_t count) |
| { |
| void *xs = s; |
| size_t temp, temp1; |
| |
| 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; |
| |
| __asm__ __volatile__("movel %1,%2\n\t" |
| "andw #7,%2\n\t" |
| "lsrl #3,%1\n\t" |
| "negw %2\n\t" |
| "jmp %%pc@(2f,%2:w:2)\n\t" |
| "1:\t" |
| "movel %3,%0@+\n\t" |
| "movel %3,%0@+\n\t" |
| "movel %3,%0@+\n\t" |
| "movel %3,%0@+\n\t" |
| "movel %3,%0@+\n\t" |
| "movel %3,%0@+\n\t" |
| "movel %3,%0@+\n\t" |
| "movel %3,%0@+\n\t" |
| "2:\t" |
| "dbra %1,1b\n\t" |
| "clrw %1\n\t" |
| "subql #1,%1\n\t" |
| "jpl 1b\n\t" |
| : "=a" (ls), "=d" (temp), "=&d" (temp1) |
| : "d" (c), "0" (ls), "1" (temp) |
| ); |
| s = ls; |
| } |
| if (count & 2) |
| { |
| short *ss = s; |
| *ss++ = c; |
| s = ss; |
| } |
| if (count & 1) |
| { |
| char *cs = s; |
| *cs = c; |
| } |
| return xs; |
| } |
