[libre-riscv-dev] [Bug 325] create POWER9 TRAP pipeline

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=325

--- Comment #54 from Cole Poirier <colepoirier at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #47)
> this is going to be a mess.
> 
> mtmsr pseudocode:
> 
> if L = 0 then
>     MSR48 <- (RS)48 | (RS)49
>     MSR58 <- ((RS)58 | (RS)49)
>         & ¬(MSR41 & MSR3 & (¬(RS)49))
>     MSR59 <- ((RS)59 | (RS)49)
>         & ¬(MSR41 & MSR3 & (¬(RS)49))
>     MSR32:40 42:47 49:50 52:57 60:62
>        (RS)32:40 42:47 49:50 52:57 60:62
> else:
>     MSR48 62 <- (RS)48 62
> 
> i forgot to add the pseudocode from mtmsr and mfmsr to the isa markdown
> files.  the above is note-form from the 3.0B PDF
> 
> mfmsr:
> 
> RT <- MSR

Luke, in order to complete task 2 of your last comment, should this be added
with the note 'Note-Form from the 3.0B PDF' instead of 'X-Form' or 'XFX-Form'?

Additionally should the pseudo code for OP_SC from comment 38 be added to
sprset.mdwn as well?

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