MultiMedia/cdxlplay/ppc/p2c/p2c_2.s

   1 #
   2 #  Planar 2 Chunky routine (C) 2009 Fredrik Wikstrom
   3 #
   4 p2c_2:
   5         add             r3,r4,r4
   6         add             r11,r10,r4
   7
   8         mr              r4,r6
   9 p2c_2_001:
  10         subi    r7,r7,1
  11 p2c_2_002:
  12         lhzu    r18,2(r10)
  13         lhzu    r19,2(r11)
  14
  15         subi    r4,r4,1
  16
  17         # pixels 0, 4, 8 and 12
  18         rlwinm  r26,r18,9,7,7
  19         rlwinm  r27,r18,13,7,7
  20         rlwinm  r28,r18,17,7,7
  21         rlwinm  r29,r18,21,7,7
  22         rlwimi  r26,r19,10,6,6
  23         rlwimi  r27,r19,14,6,6
  24         rlwimi  r28,r19,18,6,6
  25         rlwimi  r29,r19,22,6,6
  26
  27         # pixels 1, 5, 9 and 13
  28         rlwimi  r26,r18,2,15,15
  29         rlwimi  r27,r18,6,15,15
  30         rlwimi  r28,r18,10,15,15
  31         rlwimi  r29,r18,14,15,15
  32         rlwimi  r26,r19,3,14,14
  33         rlwimi  r27,r19,7,14,14
  34         rlwimi  r28,r19,11,14,14
  35         rlwimi  r29,r19,15,14,14
  36
  37         # pixels 2, 6, 10 and 14
  38         rlwimi  r26,r18,27,23,23
  39         rlwimi  r27,r18,31,23,23
  40         rlwimi  r28,r18,3,23,23
  41         rlwimi  r29,r18,7,23,23
  42         rlwimi  r26,r19,28,22,22
  43         rlwimi  r27,r19,0,22,22
  44         rlwimi  r28,r19,4,22,22
  45         rlwimi  r29,r19,8,22,22
  46
  47         # pixels 3, 7, 11 and 15
  48         rlwimi  r26,r18,20,31,31
  49         rlwimi  r27,r18,24,31,31
  50         rlwimi  r28,r18,28,31,31
  51         rlwimi  r29,r18,0,31,31
  52         rlwimi  r26,r19,21,30,30
  53         rlwimi  r27,r19,25,30,30
  54         rlwimi  r28,r19,29,30,30
  55         rlwimi  r29,r19,1,30,30
  56
  57         cmpwi   cr0,r4,0
  58
  59         stw             r26,4(r5)
  60         stw             r27,8(r5)
  61         stw             r28,12(r5)
  62         stwu    r29,16(r5)
  63
  64         bne+    p2c_2_002
  65
  66         cmpwi   cr0,r7,0
  67         mr              r4,r6
  68         bne+    p2c_2_001
  69
  70         lmw             r13,0(r1)
  71         addi    r1,r1,76
  72         blr