[cvs] / xvidcore / src / bitstream / ppc_asm / cbp_ppc.s Repository:
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revision 1.3, Fri Mar 22 11:32:47 2002 UTC revision 1.4, Fri Mar 22 12:24:07 2002 UTC
# Line 20  Line 20 
20  #    $Date$  #    $Date$
21  #    $Author$  #    $Author$
22  #  #
23  #    This is my first PPC ASM program. So I might do nasty things.  #    This is the PPC ASM code I write. So I might do nasty things.
24  #    Please send any comments to guillaume@morinfr.org  #    Please send any comments to guillaume@morinfr.org
25    
26    
# Line 55  Line 55 
55  calc_cbp_ppc:  calc_cbp_ppc:
56          # r9 will contain coeffs addr          # r9 will contain coeffs addr
57          mr 9,3          mr 9,3
58          # r8 is the loop counter          # r8 is the loop counter (rows)
59          li 8,5          li 8,5
60          # r3 contains the result, therefore we set it to 0          # r3 contains the result, therefore we set it to 0
61          xor 3,3,3          xor 3,3,3
62  .loop:  .loop:
63          # r7 is the loop2 counter, FIXME: use CTR          # r7 is the loop2 counter (columns), FIXME: use CTR
64          li 7,14          li 7,14
65          # r6 is coeff pointer for this line          # r6 is coeff pointer for this line
66          mr 6,9          mr 6,9
# Line 95  Line 95 
95          li 4,1          li 4,1
96          slw 4,4,8          slw 4,4,8
97          or 3,3,4          or 3,3,4
         b .newline  
98  .newline:  .newline:
99          addi 9,9,128          addi 9,9,128
100          # updates CR0, blabla          # updates CR0, blabla
101          subic. 8,8,1          subic. 8,8,1
102          bf 0,.loop          bf 0,.loop
 .end:  
103          blr          blr
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