Annotation of sys/lib/libkern/arch/i386/bcmp.S, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: bcmp.S,v 1.2 1996/09/27 06:47:44 mickey Exp $ */
2:
3: /*
4: * Written by J.T. Conklin <jtc@netbsd.org>.
5: * Public domain.
6: */
7:
8: #include <machine/asm.h>
9:
10: ENTRY(bcmp)
11: pushl %edi
12: pushl %esi
13: movl 12(%esp),%edi
14: movl 16(%esp),%esi
15: xorl %eax,%eax /* clear return value */
16: cld /* set compare direction forward */
17:
18: movl 20(%esp),%ecx /* compare by words */
19: shrl $2,%ecx
20: repe
21: cmpsl
22: jne L1
23:
24: movl 20(%esp),%ecx /* compare remainder by bytes */
25: andl $3,%ecx
26: repe
27: cmpsb
28: je L2
29:
30: L1: incl %eax
31: L2: popl %esi
32: popl %edi
33: ret
CVSweb