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# $Date$ |
# $Date$ |
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# $Author$ |
# $Author$ |
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# |
# |
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# 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. |
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# Please send any comments to guillaume@morinfr.org |
# Please send any comments to guillaume@morinfr.org |
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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 |
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# r3 contains the result, therefore we set it to 0 |
# r3 contains the result, therefore we set it to 0 |
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xor 3,3,3 |
xor 3,3,3 |
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.loop: |
.loop: |
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# r7 is the loop2 counter, FIXME: use CTR |
# r7 is the loop2 counter (columns), FIXME: use CTR |
64 |
li 7,14 |
li 7,14 |
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# r6 is coeff pointer for this line |
# r6 is coeff pointer for this line |
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mr 6,9 |
mr 6,9 |
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 |
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b .newline |
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98 |
.newline: |
.newline: |
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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 |
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.end: |
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103 |
blr |
blr |