arch/alpha/lib/clear_page.S

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