arch/alpha/lib/copy_page.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * arch/alpha/lib/copy_page.S
   4  *
   5  * Copy an entire page.
   6  */
   7 #include <asm/export.h>
   8         .text
   9         .align 4
  10         .global copy_page
  11         .ent copy_page
  12 copy_page:
  13         .prologue 0
  14
  15         lda     $18,128
  16         nop
  17         unop
  18         nop
  19
  20 1:      ldq     $0,0($17)
  21         ldq     $1,8($17)
  22         ldq     $2,16($17)
  23         ldq     $3,24($17)
  24
  25         ldq     $4,32($17)
  26         ldq     $5,40($17)
  27         ldq     $6,48($17)
  28         ldq     $7,56($17)
  29
  30         stq     $0,0($16)
  31         subq    $18,1,$18
  32         stq     $1,8($16)
  33         addq    $17,64,$17
  34
  35         stq     $2,16($16)
  36         stq     $3,24($16)
  37         stq     $4,32($16)
  38         stq     $5,40($16)
  39
  40         stq     $6,48($16)
  41         stq     $7,56($16)
  42         addq    $16,64,$16
  43         bne     $18, 1b
  44
  45         ret
  46         nop
  47         unop
  48         nop
  49
  50         .end copy_page
  51         EXPORT_SYMBOL(copy_page)