[Libre-soc-bugs] [Bug 1072] implement fcvt/fmv instructions in ISACaller (ls006)

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Wed May 17 17:55:16 BST 2023


--- Comment #31 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #30)
> this is turning out to be a lot of work so i am increasing the budget.
> we do have to be careful as there is supposed to be corresponding HDL
> for them.

yeah, I can implement hdl too, it shouldn't be all that complex, maybe 2-3 days
work, assuming soc.git already has basic support for fp ops (reading/writing
FPRs and FPSCR). if not, adding basic fp support should be easily justifiable
as a separate task under the integrate-ieee754fpu-into-soc task.

should fmvtg/fcvttg be a new FU since it reads fprs and writes gprs? same thing
with fmvfg/fcvtfg.

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