blob: 5cee3afe74b2c3a2b13080f425c485b0aa941a18 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
#include <machine/asm.h>
#if defined(LIBC_SCCS)
RCSID("$NetBSD: bcmp.S,v 1.1 2001/06/19 00:22:45 fvdl Exp $")
#endif
ENTRY(bcmp)
xorl %eax,%eax /* clear return value */
cld /* set compare direction forward */
movq %rdx,%rcx /* compare by words */
shrq $3,%rcx
repe
cmpsq
jne L1
movq %rdx,%rcx /* compare remainder by bytes */
andq $7,%rcx
repe
cmpsb
je L2
L1: incl %eax
L2: ret
|