[Libre-soc-bugs] [Bug 982] Support PowerPC ABI in ISACaller

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=982

--- Comment #132 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #131)

> i think you misunderstood, luke. dmitry added that to his test case, which
> tries to reproduce the SRR1 to see if the simulator is correct. 

ahh ok.

> he didn't change that part of the simulator

rright, i missed that (not able to look closely, just got back from
travelling today).

yes... it's complicated. sorting this for the HDL (copying microwatt
rather than Power ISA spec) LITERALLY tool over 2 years to EVENTUALLY
get right.

only by running microwatt's binary unit tests *and the linux kernel*
under verilator which took at least two months doing nothing else
was i able to finally get MSR interrupt and sc/rfid compatibility
with microwatt.

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