arch/frv/lib/outsl_sw.S

   1 /* outsl_ns.S: output array of 4b words to device with byte swapping
   2  *
   3  * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12
  13         .text
  14         .p2align        4
  15
  16 ###############################################################################
  17 #
  18 # void __outsl_sw(unsigned int port, const void *buf, int n)
  19 #
  20 ###############################################################################
  21         .globl          __outsl_sw
  22         .type           __outsl_sw,@function
  23 __outsl_sw:
  24         subi.p          gr9,#1,gr9
  25         setlos          #1,gr4
  26 0:
  27         ldubu           @(gr9,gr4),gr5
  28         ldubu           @(gr9,gr4),gr6
  29         slli            gr6,#8,gr6
  30         ldubu.p         @(gr9,gr4),gr7
  31         or              gr5,gr6,gr5
  32         ldubu.p         @(gr9,gr4),gr6
  33         slli            gr7,#16,gr7
  34         slli.p          gr6,#24,gr6
  35         or              gr5,gr7,gr5
  36         subicc.p        gr10,#1,gr10,icc0
  37         or              gr5,gr6,gr5
  38
  39         sti.p           gr5,@(gr8,#0)
  40         bhi             icc0,#2,0b
  41
  42         membar
  43         bralr
  44
  45         .size           __outsl_sw, .-__outsl_sw