swab.S revision 1.2 
1#include "DEFS.h"
2
3ENTRY(swab)
4	movl	sp@(4),a0	/* source */
5	movl	sp@(8),a1	/* destination */
6	movl	sp@(12),d0	/* count */
7	lsrl	#1,d0		/* count is in bytes; we need words */
8	jeq	swdone
9
10swloop:
11	movw	a0@+,d1
12	rorw	#8,d1
13	movw	d1,a1@+
14	subql	#1,d0
15	jne	swloop
16
17swdone:
18	rts
19