1/* $NetBSD: swab.S,v 1.4 1995/11/17 20:21:28 thorpej Exp $ */ 2 3#include "DEFS.h" 4 5ENTRY(swab) 6 movl sp@(4),a0 | source 7 movl sp@(8),a1 | destination 8 movl sp@(12),d0 | count 9 lsrl #1,d0 | count is in bytes; we need words 10 beq swdone 11 12swloop: 13 movw a0@+,d1 14 rorw #8,d1 15 movw d1,a1@+ 16 subql #1,d0 17 bne swloop 18 19swdone: 20 rts 21