NetBSD/lib/libc/arch/ns32k/string/memcmp.S

40 lines
567 B
ArmAsm

/* $NetBSD: memcmp.S,v 1.2 1997/05/08 13:38:52 matthias Exp $ */
/*
* Written by Matthias Pfaller, 1996
* Public domain.
*/
#include <machine/asm.h>
#if defined(LIBC_SCCS)
RCSID("$NetBSD: memcmp.S,v 1.2 1997/05/08 13:38:52 matthias Exp $")
#endif
/*
* int
* memcmp (const void *b1, const void *b2, size_t len)
*/
ENTRY(memcmp)
enter [],0
movd B_ARG2,r0
movd B_ARG0,r1
movd B_ARG1,r2
lshd -2,r0
cmpsd
movqd 4,r0
bne 1f
movqd 3,r0
andd B_ARG2,r0
1: cmpsb
bne 3f
2: exit []
ret 0
3: movzbd 0(r1),r0
movzbd 0(r2),r1
subd r1,r0
exit []
ret 0