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0bb2aa6cf521b546d971de5a558da4e25fbd7a62
[calu.git]
/
2_isa
/
src
/
sum.s
1
sum:
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;r1 = len
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;r2 = arr
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;r3 = i
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;r0 = sum
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;r4 arr data
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ldis r0, 0
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addi r3, r1, 0
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retzs- ; check len != 0
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loop:
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;load arr data
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ldw r4, 0(r2)
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;sum += arr[i];
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add r0, r0, r4
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addi r2, r2, 4
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subi r3, r3, 1
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branchnz+ loop
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ret