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{-|
Module : VeriFuzz.Icarus
Description : Icarus verilog module.
Copyright : (c) 2018-2019, Yann Herklotz Grave
License : BSD-3
Maintainer : ymherklotz [at] gmail [dot] com
Stability : experimental
Portability : POSIX
Icarus verilog module.
-}
module VeriFuzz.Icarus where
import Control.Lens
import Crypto.Hash.SHA1 (hash)
import Data.Binary (encode)
import Data.ByteString (ByteString)
import qualified Data.ByteString as B
import Data.ByteString.Lazy (toStrict)
import qualified Data.ByteString.Lazy as L (ByteString)
import Data.Char (digitToInt)
import Data.Foldable (fold)
import Data.List (transpose)
import Data.Maybe (fromMaybe, listToMaybe)
import Data.Text (Text)
import qualified Data.Text as T
import Data.Text.Encoding (encodeUtf8)
import Numeric (readInt)
import Prelude hiding (FilePath)
import Shelly
import VeriFuzz.AST
import VeriFuzz.CodeGen
import VeriFuzz.General
import VeriFuzz.Internal.AST
import VeriFuzz.Mutate
data Icarus = Icarus { icarusPath :: FilePath
, vvpPath :: FilePath
}
instance Simulator Icarus where
toText _ = "iverilog"
instance Simulate Icarus where
runSim = runSimIcarus
defaultIcarus :: Icarus
defaultIcarus = Icarus "iverilog" "vvp"
addDisplay :: [Stmnt] -> [Stmnt]
addDisplay s = concat $ transpose
[s, replicate l $ TimeCtrl 1 Nothing, replicate l
. SysTaskEnable $ Task "display" ["%b", Id "y"]]
where l = length s
assignFunc :: [Port] -> ByteString -> Stmnt
assignFunc inp bs =
NonBlockAssign . Assign conc Nothing . Number (B.length bs * 8) $ bsToI bs
where
conc = RegConcat (portToExpr <$> inp)
convert :: Text -> ByteString
convert =
toStrict
. (encode :: Integer -> L.ByteString)
. fromMaybe 0
. fmap fst
. listToMaybe
. readInt 2 (`elem` ("01" :: String)) digitToInt
. T.unpack
mask :: Text -> Text
mask = T.replace "x" "0"
callback :: ByteString -> Text -> ByteString
callback b t =
b <> convert (mask t)
runSimIcarus :: Icarus -> ModDecl -> [ByteString] -> Sh ByteString
runSimIcarus sim m bss = do
let tb = ModDecl
"main"
[]
[]
[ Initial
$ fold (addDisplay $ assignFunc (m ^. modInPorts) <$> bss)
<> (SysTaskEnable $ Task "finish" [])
]
let newtb = instantiateMod m tb
let modWithTb = VerilogSrc $ Description <$> [newtb, m]
writefile "main.v" $ genSource modWithTb
echoP "Run icarus"
run_ (icarusPath sim) ["-o", "main", "main.v"]
hash <$> runFoldLines (mempty :: ByteString) callback (vvpPath sim) ["main"]
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