from nmigen import Signal, Const
from ieee754.fpcommon.getop import FPPipeContext
-from soc.fu.alu.pipe_data import IntegerData
+from soc.fu.pipe_data import IntegerData
from soc.decoder.power_decoder2 import Data
+from nmutil.dynamicpipe import SimpleHandshakeRedir
+from soc.fu.alu.alu_input_record import CompALUOpSubset # TODO: replace
class TrapInputData(IntegerData):
+ regspec = [('INT', 'ra', '0:63'), # RA
+ ('INT', 'rb', '0:63'), # RB/immediate
+ ('FAST', 'spr1', '0:63'), # SRR0
+ ('FAST', 'cia', '0:63'), # Program counter (current)
+ ('FAST', 'msr', '0:63')] # MSR
def __init__(self, pspec):
- super().__init__(pspec)
- self.a = Signal(64, reset_less=True) # RA
- self.b = Signal(64, reset_less=True) # RB/immediate
- self.cia = Signal(64, reset_less=True) # Program counter
- self.msr = Signal(64, reset_less=True) # MSR
-
- def __iter__(self):
- yield from super().__iter__()
- yield self.a
- yield self.b
- yield self.cia
- yield self.msr
-
- def eq(self, i):
- lst = super().eq(i)
- return lst + [self.a.eq(i.a), self.b.eq(i.b),
- self.cia.eq(i.nia), self.msr.eq(i.msr)]
+ super().__init__(pspec, False)
+ # convenience
+ self.srr0, self.a, self.b = self.spr1, self.ra, self.rb
class TrapOutputData(IntegerData):
+ regspec = [('INT', 'o', '0:63'), # RA
+ ('FAST', 'spr1', '0:63'), # SRR0 SPR
+ ('FAST', 'spr2', '0:63'), # SRR1 SPR
+ ('FAST', 'nia', '0:63'), # NIA (Next PC)
+ ('FAST', 'msr', '0:63')] # MSR
def __init__(self, pspec):
- super().__init__(pspec)
- self.nia = Signal(64, reset_less=True) # NIA (Next PC)
- self.msr = Signal(64, reset_less=True) # MSR
- self.srr0 = Data(64, name="srr0") # SRR0 SPR
- self.srr1 = Data(64, name="srr1") # SRR1 SPR
- self.should_trap = Signal(reset_less=True)
-
- def __iter__(self):
- yield from super().__iter__()
- yield self.nia
- yield self.msr
- yield self.srr0
- yield self.srr1
- yield self.should_trap
-
- def eq(self, i):
- lst = super().eq(i)
- return lst + [
- self.nia.eq(i.nia), self.msr.eq(i.msr),
- self.srr0.eq(i.srr0), self.srr1.eq(i.srr1),
- self.should_trap.eq(i.should_trap)]
+ super().__init__(pspec, True)
+ # convenience
+ self.srr0, self.srr1 = self.spr1, self.spr2
+
+
+
+# TODO: replace CompALUOpSubset with CompTrapOpSubset
+class TrapPipeSpec:
+ regspec = (TrapInputData.regspec, TrapOutputData.regspec)
+ opsubsetkls = CompALUOpSubset
+ def __init__(self, id_wid, op_wid):
+ self.id_wid = id_wid
+ self.op_wid = op_wid
+ self.opkls = lambda _: self.opsubsetkls(name="op")
+ self.stage = None
+ self.pipekls = SimpleHandshakeRedir