arch/metag/lib/copy_page.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2         ! Copyright 2007,2008 Imagination Technologies Ltd.
   3
   4 #include <asm/page.h>
   5
   6         .text
   7         .global _copy_page
   8         .type   _copy_page,function
   9         !! D1Ar1 - to
  10         !! D0Ar2 - from
  11 _copy_page:
  12         MOV  D0FrT,#PAGE_SIZE
  13 $Lcopy_page_loop:
  14         GETL D0Re0,D1Re0,[D0Ar2++]
  15         GETL D0Ar6,D1Ar5,[D0Ar2++]
  16         SETL [D1Ar1++],D0Re0,D1Re0
  17         SETL [D1Ar1++],D0Ar6,D1Ar5
  18         SUBS D0FrT,D0FrT,#16
  19         BNZ  $Lcopy_page_loop
  20         MOV  PC,D1RtP
  21         .size   _copy_page,.-_copy_page