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l.xori uses signed immediate
Information:
Type :: BUG
Status :: CLOSED
Assigned to ::
nobody
Description:
Unlike the other logical instructions (l.andi, l.ori), l.xori sign extends its immediate operand.
There appears to be no justification for this. It is probably a transcription error in the architecture manual.
The architecture manual needs to be corrected, and the implementations in Or1ksim and Verilog checked to ensure they match.
Jeremy
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Comments:
| Herveille, Richard | Jun 16, 2010 |
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Currently Binutils uses signed-extend as well. So this means a change to binutils too.
Richard |
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| Bennett, Jeremy | Jun 16, 2010 |
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Fixed in supplementary architecture manual. Marking closed. Jeremy |
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