vp8/common/ppc/platform_altivec.asm

   1 ;
   2 ;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
   3 ;
   4 ;  Use of this source code is governed by a BSD-style license
   5 ;  that can be found in the LICENSE file in the root of the source
   6 ;  tree. An additional intellectual property rights grant can be found
   7 ;  in the file PATENTS.  All contributing project authors may
   8 ;  be found in the AUTHORS file in the root of the source tree.
   9 ;
  10
  11
  12     .globl save_platform_context
  13     .globl restore_platform_context
  14
  15 .macro W V P
  16     stvx    \V,  0, \P
  17     addi    \P, \P, 16
  18 .endm
  19
  20 .macro R V P
  21     lvx     \V,  0, \P
  22     addi    \P, \P, 16
  23 .endm
  24
  25 ;# r3 context_ptr
  26     .align 2
  27 save_platform_contex:
  28     W v20, r3
  29     W v21, r3
  30     W v22, r3
  31     W v23, r3
  32     W v24, r3
  33     W v25, r3
  34     W v26, r3
  35     W v27, r3
  36     W v28, r3
  37     W v29, r3
  38     W v30, r3
  39     W v31, r3
  40
  41     blr
  42
  43 ;# r3 context_ptr
  44     .align 2
  45 restore_platform_context:
  46     R v20, r3
  47     R v21, r3
  48     R v22, r3
  49     R v23, r3
  50     R v24, r3
  51     R v25, r3
  52     R v26, r3
  53     R v27, r3
  54     R v28, r3
  55     R v29, r3
  56     R v30, r3
  57     R v31, r3
  58
  59     blr