Bug 356 - fu POWER9 pipeline unit tests need to test RA=0
Summary: fu POWER9 pipeline unit tests need to test RA=0
Status: CONFIRMED
Alias: None
Product: Libre-SOC's first SoC
Classification: Unclassified
Component: Source Code (show other bugs)
Version: unspecified
Hardware: PC Mac OS
: --- enhancement
Assignee: Luke Kenneth Casson Leighton
URL:
Depends on:
Blocks: 310 313 314 315 323 324 325 330 339 348 383
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Reported: 2020-05-28 11:43 BST by Luke Kenneth Casson Leighton
Modified: 2020-07-22 15:49 BST (History)
1 user (show)

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Description Luke Kenneth Casson Leighton 2020-05-28 11:43:29 BST 
some of the instructions act differently when RA=0 (this means pass in a
zero-immediate to RA rather than the contents of register 0).  tests
for both zero-immediate-A and also for actually ensuring that RA=0 reads
register 0 are needed.

see https://git.libre-soc.org/?p=soc.git;a=blob;f=src/soc/fu/alu/test/test_pipe_caller.py;hb=HEAD

and others in soc/fu/*/test/test_pipe_caller.py
Comment 1 Luke Kenneth Casson Leighton 2020-07-22 15:49:16 BST