src/cpu/FuncUnit.py

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from m5.SimObject import SimObject
from m5.params import *


class OpClass(Enum):
    vals = [
        "No_OpClass",
        "IntAlu",
        "IntMult",
        "IntDiv",
        "FloatAdd",
        "FloatCmp",
        "FloatCvt",
        "FloatMult",
        "FloatMultAcc",
        "FloatDiv",
        "FloatMisc",
        "FloatSqrt",
        "SimdAdd",
        "SimdAddAcc",
        "SimdAlu",
        "SimdCmp",
        "SimdCvt",
        "SimdMisc",
        "SimdMult",
        "SimdMultAcc",
        "SimdShift",
        "SimdShiftAcc",
        "SimdDiv",
        "SimdSqrt",
        "SimdFloatAdd",
        "SimdFloatAlu",
        "SimdFloatCmp",
        "SimdFloatCvt",
        "SimdFloatDiv",
        "SimdFloatMisc",
        "SimdFloatMult",
        "SimdFloatMultAcc",
        "SimdFloatSqrt",
        "SimdReduceAdd",
        "SimdReduceAlu",
        "SimdReduceCmp",
        "SimdFloatReduceAdd",
        "SimdFloatReduceCmp",
        "SimdAes",
        "SimdAesMix",
        "SimdSha1Hash",
        "SimdSha1Hash2",
        "SimdSha256Hash",
        "SimdSha256Hash2",
        "SimdShaSigma2",
        "SimdShaSigma3",
        "SimdPredAlu",
        "MemRead",
        "MemWrite",
        "FloatMemRead",
        "FloatMemWrite",
        "IprAccess",
        "InstPrefetch",
    ]


class OpDesc(SimObject):
    type = "OpDesc"
    cxx_header = "cpu/func_unit.hh"
    cxx_class = "gem5::OpDesc"

    opClass = Param.OpClass("type of operation")
    opLat = Param.Cycles(1, "cycles until result is available")
    pipelined = Param.Bool(
        True,
        "set to true when the functional unit for"
        "this op is fully pipelined. False means not pipelined at all.",
    )


class FUDesc(SimObject):
    type = "FUDesc"
    cxx_header = "cpu/func_unit.hh"
    cxx_class = "gem5::FUDesc"

    count = Param.Int("number of these FU's available")
    opList = VectorParam.OpDesc("operation classes for this FU type")