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04eb9583e657cf53a3cdec0ffe4d54eabad39d94
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3 Commits

Author SHA1 Message Date
Anton Blanchard
04eb9583e6 Clean up register read debug output 
Right now we continually print all 3 possible GPRs an instruction
may be using. Add signals so we only print GPRs when they are
actually read. This should hopefully optimise away when synthesized.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
 2019-09-09 11:18:26 +10:00
Anton Blanchard
5e140298a5 Rework decode2 
The decode2 stage was spaghetti code and needed cleaning up.
Create a series of functions to pull fields from a ppc instruction
and also a series of helpers to extract values for the execution
units.

As suggested by Paul, we should pass all signals to the execution
units and only set the valid signal conditionally, which should
use less resources.

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
 2019-09-03 16:47:54 +10:00
Anton Blanchard
5a29cb4699 Initial import of microwatt 
Signed-off-by: Anton Blanchard <anton@linux.ibm.com>
 2019-08-22 16:46:13 +10:00