src/afs/LINUX/osi_flush.s

   1 /* Taken from linux-2.6/arch/ppc64/boot/string.S
   2  *
   3  * Copyright (C) Paul Mackerras 1997.
   4  *
   5  * Copyright 2000, International Business Machines Corporation and others.
   6  * All Rights Reserved.
   7  *
   8  * This software has been released under the terms of the IBM Public
   9  * License.  For details, see the LICENSE file in the top-level source
  10  * directory or online at http://www.openafs.org/dl/license10.html
  11  *
  12  * Flush the dcache and invalidate the icache for a range of addresses.
  13  *
  14  * flush_cache(addr, len)
  15  */
  16         .section        ".text"
  17         .align          2
  18         .globl          flush_cache
  19         .section        ".opd","aw"
  20         .align          3
  21 flush_cache:
  22         .quad           .flush_cache,.TOC.@tocbase,0
  23         .previous
  24         .size           flush_cache,24
  25         .globl          .flush_cache
  26 .flush_cache:
  27         addi    4,4,0x1f        /* len = (len + 0x1f) / 0x20 */
  28         rlwinm. 4,4,27,5,31
  29         mtctr   4
  30         beqlr
  31 1:      dcbf    0,3
  32         icbi    0,3
  33         addi    3,3,0x20
  34         bdnz    1b
  35         sync
  36         isync
  37         blr
  38         .long           0
  39         .byte           0,12,0,0,0,0,0,0
  40         .type           .flush_cache,@function
  41         .size           .flush_cache,.-.flush_cache