[Libre-soc-dev] demo of 16/32/48/64-bit LE/BE backward-compatible encoding

Luke Kenneth Casson Leighton lkcl at lkcl.net
Thu Nov 26 02:09:51 GMT 2020

On 11/26/20, Luke Kenneth Casson Leighton <lkcl at lkcl.net> wrote:
> On 11/26/20, Jacob Lifshay <programmerjake at gmail.com> wrote:
>> I added colors to the demo encoding, hopefully making it easier to
>> follow:
>> https://libre-soc.org/openpower/sv/16_bit_compressed/demo/

oh, one other thing that would help is: in the last column, in front
of (or after, doesn't matter) would be to include the byte index of
the instruction.

padd [0]
padd [1]

this will definitely highlight the weirdness of SV-P48 and show that
its EXTNNN byte needs to be in different locations if the 48b
instruction is hword-aligned or dword-aligned.


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