[Libre-soc-isa] [Bug 933] prefix-code (like huffman code) decode/encode instructions

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=933

--- Comment #13 from Jacob Lifshay <programmerjake at gmail.com> ---
I added pcdec to openpower-isa.git, I'm running into the issue that ISACaller
doesn't know how to handle instructions that write to both RT/RS, so I marked
the test I added as unittest.expectedFailure. Luke, can you fix that? (I'll
open a bug)

https://git.libre-soc.org/?p=openpower-isa.git;a=commit;h=5b122788a7f96555bbf5ae8ed3d18703f175588f

I also added minor_4 to the decoder:

https://git.libre-soc.org/?p=openpower-isa.git;a=commitdiff;h=4b00a4c153cd64efd9e3b7b2e4a2cdf9bb9faba9

and fixed a bug in maddld's pseudo-code:

https://git.libre-soc.org/?p=openpower-isa.git;a=commitdiff;h=d835e6024d47027d71b8f924f9d90be2f7261065

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