[libre-riscv-dev] using a stage chain in a stage

Luke Kenneth Casson Leighton lkcl at lkcl.net
Thu Jun 4 02:32:09 BST 2020


https://git.libre-soc.org/?p=soc.git;a=blob;f=src/soc/fu/div/pipe_data.py;hb=HEAD

sorry, CompLogicalOpSubset.  unless carry-in, sticky overflow etc are
needed, which i don't think they are.

each subset grabs only the fields from the instruction decode
(Decode2Execute1Type) that the pipeline actually needs.

that subset is supposed to be dropped into ctx.op, see IntegerData class.
all ospec and ispec classes derive from IntegerData at the moment.

l.



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