import qualified Control.Monad as Monad
import qualified Data.Map as Map
import qualified Maybe
+import qualified Data.Either as Either
import Data.Accessor
+import Debug.Trace
-- ForSyDe
import qualified ForSyDe.Backend.VHDL.AST as AST
import CoreSyn
import Type
import qualified Var
+import qualified IdInfo
-- Local imports
import Constants
import VHDLTypes
import VHDLTools
import CoreTools
+import Pretty
+
+-----------------------------------------------------------------------------
+-- Functions to generate VHDL for builtin functions
+-----------------------------------------------------------------------------
+
+-- | A function to wrap a builder-like function that expects its arguments to
+-- be expressions.
+genExprArgs ::
+ (dst -> func -> [AST.Expr] -> res)
+ -> (dst -> func -> [Either CoreSyn.CoreExpr AST.Expr] -> res)
+genExprArgs wrap dst func args = wrap dst func args'
+ where args' = map (either (varToVHDLExpr.exprToVar) id) args
+
+-- | A function to wrap a builder-like function that expects its arguments to
+-- be variables.
+genVarArgs ::
+ (dst -> func -> [Var.Var] -> res)
+ -> (dst -> func -> [Either CoreSyn.CoreExpr AST.Expr] -> res)
+genVarArgs wrap dst func args = wrap dst func args'
+ where
+ args' = map exprToVar exprargs
+ -- Check (rather crudely) that all arguments are CoreExprs
+ (exprargs, []) = Either.partitionEithers args
+
+-- | A function to wrap a builder-like function that produces an expression
+-- and expects it to be assigned to the destination.
+genExprRes ::
+ ((Either CoreSyn.CoreBndr AST.VHDLName) -> func -> [arg] -> VHDLSession AST.Expr)
+ -> ((Either CoreSyn.CoreBndr AST.VHDLName) -> func -> [arg] -> VHDLSession [AST.ConcSm])
+genExprRes wrap dst func args = do
+ expr <- wrap dst func args
+ return $ [mkUncondAssign dst expr]
-- | Generate a binary operator application. The first argument should be a
-- constructor from the AST.Expr type, e.g. AST.And.
-genExprOp2 :: (AST.Expr -> AST.Expr -> AST.Expr) -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
-genExprOp2 op res [arg1, arg2] = return $ op arg1 arg2
+genOperator2 :: (AST.Expr -> AST.Expr -> AST.Expr) -> BuiltinBuilder
+genOperator2 op = genExprArgs $ genExprRes (genOperator2' op)
+genOperator2' :: (AST.Expr -> AST.Expr -> AST.Expr) -> dst -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
+genOperator2' op _ f [arg1, arg2] = return $ op arg1 arg2
-- | Generate a unary operator application
-genExprOp1 :: (AST.Expr -> AST.Expr) -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
-genExprOp1 op res [arg] = return $ op arg
+genOperator1 :: (AST.Expr -> AST.Expr) -> BuiltinBuilder
+genOperator1 op = genExprArgs $ genExprRes (genOperator1' op)
+genOperator1' :: (AST.Expr -> AST.Expr) -> dst -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
+genOperator1' op _ f [arg] = return $ op arg
-- | Generate a function call from the destination binder, function name and a
-- list of expressions (its arguments)
-genExprFCall :: String -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
-genExprFCall fname res args = do
+genFCall :: BuiltinBuilder
+genFCall = genExprArgs $ genExprRes genFCall'
+genFCall' :: Either CoreSyn.CoreBndr AST.VHDLName -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
+genFCall' (Left res) f args = do
+ let fname = varToString f
let el_ty = (tfvec_elem . Var.varType) res
id <- vectorFunId el_ty fname
return $ AST.PrimFCall $ AST.FCall (AST.NSimple id) $
map (\exp -> Nothing AST.:=>: AST.ADExpr exp) args
+genFCall' (Right name) _ _ = error $ "Cannot generate builtin function call assigned to a VHDLName: " ++ show name
-- | Generate a generate statement for the builtin function "map"
-genMapCall ::
- Entity -- | The entity to map
- -> [CoreSyn.CoreBndr] -- | The vectors
- -> VHDLSession AST.ConcSm -- | The resulting generate statement
-genMapCall entity [arg, res] = return $ genSm
- where
+genMap :: BuiltinBuilder
+genMap = genVarArgs genMap'
+genMap' (Left res) f [mapped_f, arg] = do
+ signatures <- getA vsSignatures
+ let entity = Maybe.fromMaybe
+ (error $ "Using function '" ++ (varToString mapped_f) ++ "' without signature? This should not happen!")
+ (Map.lookup mapped_f signatures)
+ let
-- Setup the generate scheme
len = (tfvec_len . Var.varType) res
+ -- TODO: Use something better than varToString
label = mkVHDLExtId ("mapVector" ++ (varToString res))
nPar = AST.unsafeVHDLBasicId "n"
range = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
genScheme = AST.ForGn nPar range
-- Get the entity name and port names
entity_id = ent_id entity
- argports = map (Monad.liftM fst) (ent_args entity)
- resport = (Monad.liftM fst) (ent_res entity)
+ argports = map fst (ent_args entity)
+ resport = fst (ent_res entity)
-- Assign the ports
inport = mkAssocElemIndexed (argports!!0) (varToVHDLId arg) nPar
outport = mkAssocElemIndexed resport (varToVHDLId res) nPar
- portassigns = Maybe.catMaybes [inport,outport]
+ portassigns = [inport,outport]
-- Generate the portmap
mapLabel = "map" ++ (AST.fromVHDLId entity_id)
compins = mkComponentInst mapLabel entity_id portassigns
-- Return the generate functions
genSm = AST.CSGSm $ AST.GenerateSm label genScheme [] [compins]
+ in
+ return $ [genSm]
+genMap' (Right name) _ _ = error $ "Cannot generate map function call assigned to a VHDLName: " ++ show name
-genZipWithCall ::
- Entity
- -> [CoreSyn.CoreBndr]
- -> VHDLSession AST.ConcSm
-genZipWithCall entity [arg1, arg2, res] = return $ genSm
- where
+genZipWith :: BuiltinBuilder
+genZipWith = genVarArgs genZipWith'
+genZipWith' :: (Either CoreSyn.CoreBndr AST.VHDLName) -> CoreSyn.CoreBndr -> [Var.Var] -> VHDLSession [AST.ConcSm]
+genZipWith' (Left res) f args@[zipped_f, arg1, arg2] = do
+ signatures <- getA vsSignatures
+ let entity = Maybe.fromMaybe
+ (error $ "Using function '" ++ (varToString zipped_f) ++ "' without signature? This should not happen!")
+ (Map.lookup zipped_f signatures)
+ let
-- Setup the generate scheme
len = (tfvec_len . Var.varType) res
+ -- TODO: Use something better than varToString
label = mkVHDLExtId ("zipWithVector" ++ (varToString res))
nPar = AST.unsafeVHDLBasicId "n"
range = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
genScheme = AST.ForGn nPar range
-- Get the entity name and port names
entity_id = ent_id entity
- argports = map (Monad.liftM fst) (ent_args entity)
- resport = (Monad.liftM fst) (ent_res entity)
+ argports = map fst (ent_args entity)
+ resport = fst (ent_res entity)
-- Assign the ports
inport1 = mkAssocElemIndexed (argports!!0) (varToVHDLId arg1) nPar
inport2 = mkAssocElemIndexed (argports!!1) (varToVHDLId arg2) nPar
outport = mkAssocElemIndexed resport (varToVHDLId res) nPar
- portassigns = Maybe.catMaybes [inport1,inport2,outport]
+ portassigns = [inport1,inport2,outport]
-- Generate the portmap
mapLabel = "zipWith" ++ (AST.fromVHDLId entity_id)
compins = mkComponentInst mapLabel entity_id portassigns
-- Return the generate functions
genSm = AST.CSGSm $ AST.GenerateSm label genScheme [] [compins]
-
-genFoldlCall ::
- Entity
- -> [CoreSyn.CoreBndr]
- -> VHDLSession AST.ConcSm
-genFoldlCall entity [startVal, inVec, resVal] = do
+ in
+ return $ [genSm]
+{-
+genFoldl :: BuiltinBuilder
+genFoldl = genVarArgs genFoldl'
+genFoldl' resVal f [folded_f, startVal, inVec] = do
+ signatures <- getA vsSignatures
+ let entity = Maybe.fromMaybe
+ (error $ "Using function '" ++ (varToString folded_f) ++ "' without signature? This should not happen!")
+ (Map.lookup folded_f signatures)
let (vec, _) = splitAppTy (Var.varType inVec)
let vecty = Type.mkAppTy vec (Var.varType startVal)
vecType <- vhdl_ty vecty
let entity_id = ent_id entity
let argports = map (Monad.liftM fst) (ent_args entity)
let resport = (Monad.liftM fst) (ent_res entity)
- -- Return the generate functions
+ -- Return the generate functions
let genSm = AST.GenerateSm genlabel genScheme []
[ AST.CSGSm (genFirstCell (entity_id, argports, resport)
[startVal, inVec, resVal])
, AST.CSGSm (genLastCell (entity_id, argports, resport)
[startVal, inVec, resVal])
]
- return $ AST.CSBSm $ AST.BlockSm blockLabel [] (AST.PMapAspect []) [tmpVec] [AST.CSGSm genSm]
+ return $ [AST.CSBSm $ AST.BlockSm blockLabel [] (AST.PMapAspect []) [tmpVec] [AST.CSGSm genSm]]
where
genFirstCell (entity_id, argports, resport) [startVal, inVec, resVal] = cellGn
where
(AST.NSimple tmpId) [AST.PrimLit $ show (len-1)])))
-- Return the generate functions
cellGn = AST.GenerateSm cellLabel cellGenScheme [] [compins,assign]
+-}
+-----------------------------------------------------------------------------
+-- Function to generate VHDL for applications
+-----------------------------------------------------------------------------
+genApplication ::
+ (Either CoreSyn.CoreBndr AST.VHDLName) -- ^ Where to store the result?
+ -> CoreSyn.CoreBndr -- ^ The function to apply
+ -> [Either CoreSyn.CoreExpr AST.Expr] -- ^ The arguments to apply
+ -> VHDLSession [AST.ConcSm] -- ^ The resulting concurrent statements
+genApplication dst f args =
+ case Var.globalIdVarDetails f of
+ IdInfo.DataConWorkId dc -> case dst of
+ -- It's a datacon. Create a record from its arguments.
+ Left bndr -> do
+ -- We have the bndr, so we can get at the type
+ labels <- getFieldLabels (Var.varType bndr)
+ return $ zipWith mkassign labels $ map (either exprToVHDLExpr id) args
+ where
+ mkassign :: AST.VHDLId -> AST.Expr -> AST.ConcSm
+ mkassign label arg =
+ let sel_name = mkSelectedName ((either varToVHDLName id) dst) label in
+ mkUncondAssign (Right sel_name) arg
+ Right _ -> error $ "Generate.genApplication Can't generate dataconstructor application without an original binder"
+ IdInfo.VanillaGlobal -> do
+ -- It's a global value imported from elsewhere. These can be builtin
+ -- functions. Look up the function name in the name table and execute
+ -- the associated builder if there is any and the argument count matches
+ -- (this should always be the case if it typechecks, but just to be
+ -- sure...).
+ case (Map.lookup (varToString f) globalNameTable) of
+ Just (arg_count, builder) ->
+ if length args == arg_count then
+ builder dst f args
+ else
+ error $ "Generate.genApplication Incorrect number of arguments to builtin function: " ++ pprString f ++ " Args: " ++ show args
+ Nothing -> error $ "Using function from another module that is not a known builtin: " ++ pprString f
+ IdInfo.NotGlobalId -> do
+ signatures <- getA vsSignatures
+ -- This is a local id, so it should be a function whose definition we
+ -- have and which can be turned into a component instantiation.
+ let
+ signature = Maybe.fromMaybe
+ (error $ "Using function '" ++ (varToString f) ++ "' without signature? This should not happen!")
+ (Map.lookup f signatures)
+ entity_id = ent_id signature
+ -- TODO: Using show here isn't really pretty, but we'll need some
+ -- unique-ish value...
+ label = "comp_ins_" ++ (either show show) dst
+ portmaps = mkAssocElems (map (either exprToVHDLExpr id) args) ((either varToVHDLName id) dst) signature
+ in
+ return [mkComponentInst label entity_id portmaps]
+ details -> error $ "Calling unsupported function " ++ pprString f ++ " with GlobalIdDetails " ++ pprString details
+-----------------------------------------------------------------------------
+-- Functions to generate functions dealing with vectors.
+-----------------------------------------------------------------------------
-- Returns the VHDLId of the vector function with the given name for the given
-- element type. Generates -- this function if needed.
(AST.PrimName $ AST.NSimple aPar)])
-- return res
copyExpr = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
+
+-----------------------------------------------------------------------------
+-- A table of builtin functions
+-----------------------------------------------------------------------------
+
+-- | The builtin functions we support. Maps a name to an argument count and a
+-- builder function.
+globalNameTable :: NameTable
+globalNameTable = Map.fromList
+ [ (exId , (2, genFCall ) )
+ , (replaceId , (3, genFCall ) )
+ , (headId , (1, genFCall ) )
+ , (lastId , (1, genFCall ) )
+ , (tailId , (1, genFCall ) )
+ , (initId , (1, genFCall ) )
+ , (takeId , (2, genFCall ) )
+ , (dropId , (2, genFCall ) )
+ , (plusgtId , (2, genFCall ) )
+ , (mapId , (2, genMap ) )
+ , (zipWithId , (3, genZipWith ) )
+ --, (foldlId , (3, genFoldl ) )
+ , (emptyId , (0, genFCall ) )
+ , (singletonId , (1, genFCall ) )
+ , (copyId , (2, genFCall ) )
+ , (hwxorId , (2, genOperator2 AST.Xor ) )
+ , (hwandId , (2, genOperator2 AST.And ) )
+ , (hworId , (2, genOperator2 AST.Or ) )
+ , (hwnotId , (1, genOperator1 AST.Not ) )
+ ]
projects / matthijs / master-project / cλash.git / blobdiff