-main =
- do
- defaultErrorHandler defaultDynFlags $ do
- runGhc (Just libdir) $ do
- dflags <- getSessionDynFlags
- setSessionDynFlags dflags
- --target <- guessTarget "adder.hs" Nothing
- --liftIO (print (showSDoc (ppr (target))))
- --liftIO $ printTarget target
- --setTargets [target]
- --load LoadAllTargets
- --core <- GHC.compileToCoreSimplified "Adders.hs"
- core <- GHC.compileToCoreSimplified "Adders.hs"
- liftIO $ printBinds (cm_binds core)
- let bind = findBind "no_carry_adder" (cm_binds core)
- let NonRec var expr = bind
- liftIO $ putStr $ showSDoc $ ppr expr
- liftIO $ putStr "\n\n"
- liftIO $ putStr $ getEntity bind
- liftIO $ putStr $ getArchitecture bind
- return expr
-
-printTarget (Target (TargetFile file (Just x)) obj Nothing) =
- print $ show file
-
-printBinds [] = putStr "done\n\n"
-printBinds (b:bs) = do
- printBind b
- putStr "\n"
- printBinds bs
-
-printBind (NonRec b expr) = do
- putStr "NonRec: "
- printBind' (b, expr)
-
-printBind (Rec binds) = do
- putStr "Rec: \n"
- foldl1 (>>) (map printBind' binds)
-
-printBind' (b, expr) = do
- putStr $ getOccString b
- --putStr $ showSDoc $ ppr expr
- putStr "\n"
-
-findBind :: String -> [CoreBind] -> CoreBind
-findBind lookfor =
- -- This ignores Recs and compares the name of the bind with lookfor,
- -- disregarding any namespaces in OccName and extra attributes in Name and
- -- Var.
- Maybe.fromJust . find (\b -> case b of
- Rec l -> False
- NonRec var _ -> lookfor == (occNameString $ nameOccName $ getName var)
- )
-
--- Generate a port (or multiple for tuple types) in the given direction for
--- each type given.
-getPortsForTys :: String -> String -> Int -> [Type] -> String
-getPortsForTys dir prefix num [] = ""
-getPortsForTys dir prefix num (t:ts) =
- (getPortsForTy dir (prefix ++ show num) t) ++ getPortsForTys dir prefix (num + 1) ts
-
-getPortsForFunTy ty =
- -- All of a function's arguments become IN ports, the result becomes on
- -- (or more) OUT ports.
- -- Drop the first ;\n
- drop 2 (getPortsForTys "in" "portin" 0 args) ++ (getPortsForTy "out" "portout" res) ++ "\n"
- where
- (args, res) = Type.splitFunTys ty
-
-getPortsForTy :: String -> String -> Type -> String
-getPortsForTy dir name ty =
- if (TyCon.isTupleTyCon tycon) then
- -- Expand tuples we find
- getPortsForTys dir name 0 args
- else -- Assume it's a type constructor application, ie simple data type
- let
- vhdlTy = showSDoc $ ppr $ TyCon.tyConName tycon;
- in
- ";\n\t" ++ name ++ " : " ++ dir ++ " " ++ vhdlTy
- where
- (tycon, args) = Type.splitTyConApp ty
-
-getEntity (NonRec var expr) =
- "entity " ++ name ++ " is\n"
- ++ "port (\n"
- ++ getPortsForFunTy ty
- ++ ");\n"
- ++ "end " ++ name ++ ";\n\n"
- where
- name = (getOccString var)
- ty = CoreUtils.exprType expr
-
--- Accepts a port name and an argument to map to it.
--- Returns the appropriate line for in the port map
-getPortMapEntry binds portname (Var id) =
- "\t" ++ portname ++ " => " ++ signalname ++ "\n"
- where
- Port signalname = Maybe.fromMaybe
- (error $ "Argument " ++ getOccString id ++ "is unknown")
- (lookup id binds)
-
-getPortMapEntry binds _ a = error $ "Unsupported argument: " ++ (showSDoc $ ppr a)
-
-getInstantiations ::
- PortNameMap -- The arguments that need to be applied to the
- -- expression. Should always be the Args
- -- constructor.
- -> [(CoreBndr, PortNameMap)] -- A list of bindings in effect
- -> CoreSyn.CoreExpr -- The expression to generate an architecture for
- -> String -- The resulting VHDL code
-
--- A lambda expression binds the first argument (a) to the binder b.
-getInstantiations (Args (a:as)) binds (Lam b expr) =
- getInstantiations (Args as) ((b, a):binds) expr
-
--- A case expression that checks a single variable and has a single
--- alternative, can be used to take tuples apart
-getInstantiations args binds (Case (Var v) b _ [res]) =
- case altcon of
- DataAlt datacon ->
- if (DataCon.isTupleCon datacon) then
- getInstantiations args binds' expr
- else
- error "Data constructors other than tuples not supported"
- otherwise ->
- error "Case binders other than tuples not supported"
- where
- binds' = (zip bind_vars tuple_ports) ++ binds
- (altcon, bind_vars, expr) = res
- -- Find the portnamemaps for each of the tuple's elements
- Tuple tuple_ports = Maybe.fromMaybe
- (error $ "Case expression uses unknown scrutinee " ++ getOccString v)
- (lookup v binds)
-
--- An application is an instantiation of a component
-getInstantiations args binds app@(App expr arg) =
- --indent ++ "F:\n" ++ (getInstantiations (' ':indent) expr) ++ "\n" ++ indent ++ "A:\n" ++ (getInstantiations (' ':indent) arg) ++ "\n"
- "app : " ++ (getOccString f) ++ "\n"
- ++ "port map (\n"
- ++ concat (zipWith (getPortMapEntry binds) ["portin0", "portin1"] args)
- ++ ");\n"
- where
- ((Var f), args) = collectArgs app
-
-getInstantiations args binds expr = showSDoc $ ppr $ expr
-
-getArchitecture (NonRec var expr) =
- "architecture structural of " ++ name ++ " is\n"
- ++ "begin\n"
- ++ getInstantiations (Args inportnames) [] expr
- ++ "end structural\n"
- where
- name = (getOccString var)
- ty = CoreUtils.exprType expr
- (fargs, res) = Type.splitFunTys ty
- --state = if length fargs == 1 then () else (last fargs)
- ports = if length fargs == 1 then fargs else (init fargs)
- inportnames = case ports of
- [port] -> [getPortNameMapForTy "portin" port]
- ps -> getPortNameMapForTys "portin" 0 ps
-
-data PortNameMap =
- Args [PortNameMap] -- Each of the submaps represent an argument to the
- -- function. Should only occur at top level.
- | Tuple [PortNameMap]
- | Port String
-
--- Generate a port name map (or multiple for tuple types) in the given direction for
--- each type given.
-getPortNameMapForTys :: String -> Int -> [Type] -> [PortNameMap]
-getPortNameMapForTys prefix num [] = []
-getPortNameMapForTys prefix num (t:ts) =
- (getPortNameMapForTy (prefix ++ show num) t) : getPortNameMapForTys prefix (num + 1) ts
-
-getPortNameMapForTy :: String -> Type -> PortNameMap
-getPortNameMapForTy name ty =
- if (TyCon.isTupleTyCon tycon) then
- -- Expand tuples we find
- Tuple (getPortNameMapForTys name 0 args)
- else -- Assume it's a type constructor application, ie simple data type
- -- TODO: Add type?
- Port name
- where
- (tycon, args) = Type.splitTyConApp ty
+-- The following modules come from the ForSyDe project. They are really
+-- internal modules, so ForSyDe.cabal has to be modified prior to installing
+-- ForSyDe to get access to these modules.
+import qualified ForSyDe.Backend.VHDL.AST as AST
+import qualified ForSyDe.Backend.VHDL.Ppr
+import qualified ForSyDe.Backend.VHDL.FileIO
+import qualified ForSyDe.Backend.Ppr
+-- This is needed for rendering the pretty printed VHDL
+import Text.PrettyPrint.HughesPJ (render)
+
+import TranslatorTypes
+import HsValueMap
+import Pretty
+import Normalize
+import Flatten
+import FlattenTypes
+import VHDLTypes
+import qualified VHDL
+
+main = do
+ makeVHDL "Adders.hs" "highordtest2" True
+
+makeVHDL :: String -> String -> Bool -> IO ()
+makeVHDL filename name stateful = do
+ -- Load the module
+ core <- loadModule filename
+ -- Translate to VHDL
+ vhdl <- moduleToVHDL core [(name, stateful)]
+ -- Write VHDL to file
+ let dir = "./vhdl/" ++ name ++ "/"
+ mapM (writeVHDL dir) vhdl
+ return ()
+
+-- | Show the core structure of the given binds in the given file.
+listBind :: String -> String -> IO ()
+listBind filename name = do
+ core <- loadModule filename
+ let [(b, expr)] = findBinds core [name]
+ putStr "\n"
+ putStr $ prettyShow expr
+ putStr "\n\n"
+ putStr $ showSDoc $ ppr expr
+ putStr "\n\n"
+ putStr $ showSDoc $ ppr $ CoreUtils.exprType expr
+ putStr "\n\n"
+
+-- | Translate the binds with the given names from the given core module to
+-- VHDL. The Bool in the tuple makes the function stateful (True) or
+-- stateless (False).
+moduleToVHDL :: HscTypes.CoreModule -> [(String, Bool)] -> IO [(AST.VHDLId, AST.DesignFile)]
+moduleToVHDL core list = do
+ let (names, statefuls) = unzip list
+ let binds = findBinds core names
+ -- Generate a UniqSupply
+ -- Running
+ -- egrep -r "(initTcRnIf|mkSplitUniqSupply)" .
+ -- on the compiler dir of ghc suggests that 'z' is not used to generate a
+ -- unique supply anywhere.
+ uniqSupply <- UniqSupply.mkSplitUniqSupply 'z'
+ -- Turn bind into VHDL
+ let (vhdl, sess) = State.runState (mkVHDL uniqSupply binds statefuls) (TranslatorSession core 0 Map.empty)
+ mapM (putStr . render . ForSyDe.Backend.Ppr.ppr . snd) vhdl
+ putStr $ "\n\nFinal session:\n" ++ prettyShow sess ++ "\n\n"
+ return vhdl
+ where
+ -- Turns the given bind into VHDL
+ mkVHDL :: UniqSupply.UniqSupply -> [(CoreBndr, CoreExpr)] -> [Bool] -> TranslatorState [(AST.VHDLId, AST.DesignFile)]
+ mkVHDL uniqSupply binds statefuls = do
+ let binds'' = map (Arrow.second $ normalize uniqSupply) binds
+ let binds' = trace ("Before:\n\n" ++ showSDoc ( ppr binds ) ++ "\n\nAfter:\n\n" ++ showSDoc ( ppr binds'')) binds''
+ -- Add the builtin functions
+ --mapM addBuiltIn builtin_funcs
+ -- Create entities and architectures for them
+ --Monad.zipWithM processBind statefuls binds
+ --modA tsFlatFuncs (Map.map nameFlatFunction)
+ --flatfuncs <- getA tsFlatFuncs
+ return $ VHDL.createDesignFiles binds'
+
+-- | Write the given design file to a file with the given name inside the
+-- given dir
+writeVHDL :: String -> (AST.VHDLId, AST.DesignFile) -> IO ()
+writeVHDL dir (name, vhdl) = do
+ -- Create the dir if needed
+ exists <- Directory.doesDirectoryExist dir
+ Monad.unless exists $ Directory.createDirectory dir
+ -- Find the filename
+ let fname = dir ++ (AST.fromVHDLId name) ++ ".vhdl"
+ -- Write the file
+ ForSyDe.Backend.VHDL.FileIO.writeDesignFile vhdl fname
+
+-- | Loads the given file and turns it into a core module.
+loadModule :: String -> IO HscTypes.CoreModule
+loadModule filename =
+ defaultErrorHandler defaultDynFlags $ do
+ runGhc (Just libdir) $ do
+ dflags <- getSessionDynFlags
+ setSessionDynFlags dflags
+ --target <- guessTarget "adder.hs" Nothing
+ --liftIO (print (showSDoc (ppr (target))))
+ --liftIO $ printTarget target
+ --setTargets [target]
+ --load LoadAllTargets
+ --core <- GHC.compileToCoreSimplified "Adders.hs"
+ core <- GHC.compileToCoreModule filename
+ return core
+
+-- | Extracts the named binds from the given module.
+findBinds :: HscTypes.CoreModule -> [String] -> [(CoreBndr, CoreExpr)]
+findBinds core names = Maybe.mapMaybe (findBind (CoreSyn.flattenBinds $ cm_binds core)) names
+
+-- | Extract a named bind from the given list of binds
+findBind :: [(CoreBndr, CoreExpr)] -> String -> Maybe (CoreBndr, CoreExpr)
+findBind binds lookfor =
+ -- This ignores Recs and compares the name of the bind with lookfor,
+ -- disregarding any namespaces in OccName and extra attributes in Name and
+ -- Var.
+ find (\(var, _) -> lookfor == (occNameString $ nameOccName $ getName var)) binds
+
+-- | Processes the given bind as a top level bind.
+processBind ::
+ Bool -- ^ Should this be stateful function?
+ -> (CoreBndr, CoreExpr) -- ^ The bind to process
+ -> TranslatorState ()
+
+processBind stateful bind@(var, expr) = do
+ -- Create the function signature
+ let ty = CoreUtils.exprType expr
+ let hsfunc = mkHsFunction var ty stateful
+ flattenBind hsfunc bind
+
+-- | Flattens the given bind into the given signature and adds it to the
+-- session. Then (recursively) finds any functions it uses and does the same
+-- with them.
+flattenBind ::
+ HsFunction -- The signature to flatten into
+ -> (CoreBndr, CoreExpr) -- The bind to flatten
+ -> TranslatorState ()
+
+flattenBind hsfunc bind@(var, expr) = do
+ -- Flatten the function
+ let flatfunc = flattenFunction hsfunc bind
+ -- Propagate state variables
+ let flatfunc' = propagateState hsfunc flatfunc
+ -- Store the flat function in the session
+ modA tsFlatFuncs (Map.insert hsfunc flatfunc')
+ -- Flatten any functions used
+ let used_hsfuncs = Maybe.mapMaybe usedHsFunc (flat_defs flatfunc')
+ mapM_ resolvFunc used_hsfuncs
+
+-- | Decide which incoming state variables will become state in the
+-- given function, and which will be propagate to other applied
+-- functions.
+propagateState ::
+ HsFunction
+ -> FlatFunction
+ -> FlatFunction
+
+propagateState hsfunc flatfunc =
+ flatfunc {flat_defs = apps', flat_sigs = sigs'}
+ where
+ (olds, news) = unzip $ getStateSignals hsfunc flatfunc
+ states' = zip olds news
+ -- Find all signals used by all sigdefs
+ uses = concatMap sigDefUses (flat_defs flatfunc)
+ -- Find all signals that are used more than once (is there a
+ -- prettier way to do this?)
+ multiple_uses = uses List.\\ (List.nub uses)
+ -- Find the states whose "old state" signal is used only once
+ single_use_states = filter ((`notElem` multiple_uses) . fst) states'
+ -- See if these single use states can be propagated
+ (substate_sigss, apps') = unzip $ map (propagateState' single_use_states) (flat_defs flatfunc)
+ substate_sigs = concat substate_sigss
+ -- Mark any propagated state signals as SigSubState
+ sigs' = map
+ (\(id, info) -> (id, if id `elem` substate_sigs then info {sigUse = SigSubState} else info))
+ (flat_sigs flatfunc)
+
+-- | Propagate the state into a single function application.
+propagateState' ::
+ [(SignalId, SignalId)]
+ -- ^ TODO
+ -> SigDef -- ^ The SigDef to process.
+ -> ([SignalId], SigDef)
+ -- ^ Any signal ids that should become substates,
+ -- and the resulting application.
+
+propagateState' states def =
+ if (is_FApp def) then
+ (our_old ++ our_new, def {appFunc = hsfunc'})
+ else
+ ([], def)
+ where
+ hsfunc = appFunc def
+ args = appArgs def
+ res = appRes def
+ our_states = filter our_state states
+ -- A state signal belongs in this function if the old state is
+ -- passed in, and the new state returned
+ our_state (old, new) =
+ any (old `Foldable.elem`) args
+ && new `Foldable.elem` res
+ (our_old, our_new) = unzip our_states
+ -- Mark the result
+ zipped_res = zipValueMaps res (hsFuncRes hsfunc)
+ res' = fmap (mark_state (zip our_new [0..])) zipped_res
+ -- Mark the args
+ zipped_args = zipWith zipValueMaps args (hsFuncArgs hsfunc)
+ args' = map (fmap (mark_state (zip our_old [0..]))) zipped_args
+ hsfunc' = hsfunc {hsFuncArgs = args', hsFuncRes = res'}
+
+ mark_state :: [(SignalId, StateId)] -> (SignalId, HsValueUse) -> HsValueUse
+ mark_state states (id, use) =
+ case lookup id states of
+ Nothing -> use
+ Just state_id -> State state_id
+
+-- | Returns pairs of signals that should be mapped to state in this function.
+getStateSignals ::
+ HsFunction -- | The function to look at
+ -> FlatFunction -- | The function to look at
+ -> [(SignalId, SignalId)]
+ -- | TODO The state signals. The first is the state number, the second the
+ -- signal to assign the current state to, the last is the signal
+ -- that holds the new state.
+
+getStateSignals hsfunc flatfunc =
+ [(old_id, new_id)
+ | (old_num, old_id) <- args
+ , (new_num, new_id) <- res
+ , old_num == new_num]
+ where
+ sigs = flat_sigs flatfunc
+ -- Translate args and res to lists of (statenum, sigid)
+ args = concat $ zipWith stateList (hsFuncArgs hsfunc) (flat_args flatfunc)
+ res = stateList (hsFuncRes hsfunc) (flat_res flatfunc)
+
+-- | Find the given function, flatten it and add it to the session. Then
+-- (recursively) do the same for any functions used.
+resolvFunc ::
+ HsFunction -- | The function to look for
+ -> TranslatorState ()
+
+resolvFunc hsfunc = do
+ flatfuncmap <- getA tsFlatFuncs
+ -- Don't do anything if there is already a flat function for this hsfunc or
+ -- when it is a builtin function.
+ Monad.unless (Map.member hsfunc flatfuncmap) $ do
+ -- Not working with new builtins -- Monad.unless (elem hsfunc VHDL.builtin_hsfuncs) $ do
+ -- New function, resolve it
+ core <- getA tsCoreModule
+ -- Find the named function
+ let name = (hsFuncName hsfunc)
+ let bind = findBind (CoreSyn.flattenBinds $ cm_binds core) name
+ case bind of
+ Nothing -> error $ "Couldn't find function " ++ name ++ " in current module."
+ Just b -> flattenBind hsfunc b
+
+-- | Translate a top level function declaration to a HsFunction. i.e., which
+-- interface will be provided by this function. This function essentially
+-- defines the "calling convention" for hardware models.
+mkHsFunction ::
+ Var.Var -- ^ The function defined
+ -> Type -- ^ The function type (including arguments!)
+ -> Bool -- ^ Is this a stateful function?
+ -> HsFunction -- ^ The resulting HsFunction
+
+mkHsFunction f ty stateful=
+ HsFunction hsname hsargs hsres
+ where
+ hsname = getOccString f
+ (arg_tys, res_ty) = Type.splitFunTys ty
+ (hsargs, hsres) =
+ if stateful
+ then
+ let
+ -- The last argument must be state
+ state_ty = last arg_tys
+ state = useAsState (mkHsValueMap state_ty)
+ -- All but the last argument are inports
+ inports = map (useAsPort . mkHsValueMap)(init arg_tys)
+ hsargs = inports ++ [state]
+ hsres = case splitTupleType res_ty of
+ -- Result type must be a two tuple (state, ports)
+ Just [outstate_ty, outport_ty] -> if Type.coreEqType state_ty outstate_ty
+ then
+ Tuple [state, useAsPort (mkHsValueMap outport_ty)]
+ else
+ error $ "Input state type of function " ++ hsname ++ ": " ++ (showSDoc $ ppr state_ty) ++ " does not match output state type: " ++ (showSDoc $ ppr outstate_ty)
+ otherwise -> error $ "Return type of top-level function " ++ hsname ++ " must be a two-tuple containing a state and output ports."
+ in
+ (hsargs, hsres)
+ else
+ -- Just use everything as a port
+ (map (useAsPort . mkHsValueMap) arg_tys, useAsPort $ mkHsValueMap res_ty)
+
+-- | Adds signal names to the given FlatFunction
+nameFlatFunction ::
+ FlatFunction
+ -> FlatFunction
+
+nameFlatFunction flatfunc =
+ -- Name the signals
+ let
+ s = flat_sigs flatfunc
+ s' = map nameSignal s in
+ flatfunc { flat_sigs = s' }
+ where
+ nameSignal :: (SignalId, SignalInfo) -> (SignalId, SignalInfo)
+ nameSignal (id, info) =
+ let hints = nameHints info in
+ let parts = ("sig" : hints) ++ [show id] in
+ let name = concat $ List.intersperse "_" parts in
+ (id, info {sigName = Just name})
+
+-- | Splits a tuple type into a list of element types, or Nothing if the type
+-- is not a tuple type.
+splitTupleType ::
+ Type -- ^ The type to split
+ -> Maybe [Type] -- ^ The tuples element types
+
+splitTupleType ty =
+ case Type.splitTyConApp_maybe ty of
+ Just (tycon, args) -> if TyCon.isTupleTyCon tycon
+ then
+ Just args
+ else
+ Nothing
+ Nothing -> Nothing
+
+-- vim: set ts=8 sw=2 sts=2 expandtab:
projects / matthijs / master-project / cλash.git / blobdiff