[Libre-soc-isa] [Bug 1018] New: byte swaps needed for fprs (fgrevi?) and fpr/gpr transfers

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=1018

            Bug ID: 1018
           Summary: byte swaps needed for fprs (fgrevi?) and fpr/gpr
                    transfers
           Product: Libre-SOC's first SoC
           Version: unspecified
          Hardware: Other
                OS: Linux
            Status: CONFIRMED
          Severity: enhancement
          Priority: ---
         Component: Specification
          Assignee: programmerjake at gmail.com
          Reporter: programmerjake at gmail.com
                CC: libre-soc-isa at lists.libre-soc.org,
                    programmerjake at gmail.com
            Blocks: 1015
   NLnet milestone: ---

needed for memcpy f32x2 <-> f64x1 and u32x2 <-> f64x1 and similar.

* add fgrevi for fpr -> fpr byte swaps
* maybe replace fmv[f/t]g[s][.] with fgrev[f/t]g[s]i[.] for fpr <-> gpr byte
swaps
* don't need grevlut functionality so grevi is sufficient


Referenced Bugs:

https://bugs.libre-soc.org/show_bug.cgi?id=1015
[Bug 1015] rfc for rest of int/fp move/convert ls006
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