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unit Utils

em.coremark/Utils.em
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package em.coremark

module Utils

    const NUM_SEEDS: uint8 = 5

    type Kind: enum
        FINAL, LIST, MATRIX, STATE, ZZZ_
    end

    type seed_t: uint16 volatile
    type sum_t: uint16

    function bindCrc(kind: Kind, crc: sum_t)
    function getCrc(kind: Kind): sum_t
    function setCrc(kind: Kind, crc: sum_t)

    host function bindSeedH(idx: uint8, val: seed_t)
    function getSeed(idx: uint8): seed_t

private:

    var crcTab: sum_t[]
    var seedTab: seed_t[NUM_SEEDS]

end

def em$construct()
    crcTab.length = <uint16>Kind.ZZZ_
end

def bindCrc(kind, crc)
    auto p = &crcTab[<uint16>kind]
    *p = crc if *p == 0
end

def bindSeedH(idx, val)
    seedTab[idx - 1] = val
end

def getCrc(kind)
    return crcTab[<uint16>kind]
end

def getSeed(idx)
    return seedTab[idx - 1]
end

def setCrc(kind, crc)
    crcTab[<uint16>kind] = crc
end