From 624b62bda41b49d5eaa06dfdc80871634eb67f8d Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Sat, 4 Jul 2020 12:59:19 +0100 Subject: [PATCH] add spr input record --- src/soc/fu/spr/spr_input_record.py | 42 ++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 src/soc/fu/spr/spr_input_record.py diff --git a/src/soc/fu/spr/spr_input_record.py b/src/soc/fu/spr/spr_input_record.py new file mode 100644 index 00000000..67174376 --- /dev/null +++ b/src/soc/fu/spr/spr_input_record.py @@ -0,0 +1,42 @@ +from nmigen.hdl.rec import Record, Layout + +from soc.decoder.power_enums import (InternalOp, Function) + + +class CompSPROpSubset(Record): + """CompSPROpSubset + + a copy of the relevant subset information from Decode2Execute1Type + needed for TRAP operations. use with eq_from_execute1 (below) to + grab subsets. + """ + def __init__(self, name=None): + layout = (('insn_type', InternalOp), + ('fn_unit', Function), + ('insn', 32), + ('is_32bit', 1), + ) + + Record.__init__(self, Layout(layout), name=name) + + # grrr. Record does not have kwargs + self.insn_type.reset_less = True + self.insn.reset_less = True + self.fn_unit.reset_less = True + self.is_32bit.reset_less = True + + def eq_from_execute1(self, other): + """ use this to copy in from Decode2Execute1Type + """ + res = [] + for fname, sig in self.fields.items(): + eqfrom = other.fields[fname] + res.append(sig.eq(eqfrom)) + return res + + def ports(self): + return [self.insn_type, + self.insn, + self.fn_unit, + self.is_32bit, + ] -- 2.30.2