4 import qualified Control.Monad as Monad
5 import qualified Data.Map as Map
10 import qualified ForSyDe.Backend.VHDL.AST as AST
23 -- | Generate a binary operator application. The first argument should be a
24 -- constructor from the AST.Expr type, e.g. AST.And.
25 genExprOp2 :: (AST.Expr -> AST.Expr -> AST.Expr) -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
26 genExprOp2 op res [arg1, arg2] = return $ op arg1 arg2
28 -- | Generate a unary operator application
29 genExprOp1 :: (AST.Expr -> AST.Expr) -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
30 genExprOp1 op res [arg] = return $ op arg
32 -- | Generate a function call from the destination binder, function name and a
33 -- list of expressions (its arguments)
34 genExprFCall :: String -> CoreSyn.CoreBndr -> [AST.Expr] -> VHDLSession AST.Expr
35 genExprFCall fname res args = do
36 let el_ty = (tfvec_elem . Var.varType) res
37 id <- vectorFunId el_ty fname
38 return $ AST.PrimFCall $ AST.FCall (AST.NSimple id) $
39 map (\exp -> Nothing AST.:=>: AST.ADExpr exp) args
41 -- | Generate a generate statement for the builtin function "map"
43 Entity -- | The entity to map
44 -> [CoreSyn.CoreBndr] -- | The vectors
45 -> VHDLSession AST.GenerateSm -- | The resulting generate statement
46 genMapCall entity [arg, res] = return $ genSm
48 -- Setup the generate scheme
49 len = (tfvec_len . Var.varType) res
50 label = mkVHDLExtId ("mapVector" ++ (varToString res))
51 nPar = AST.unsafeVHDLBasicId "n"
52 range = AST.ToRange (AST.PrimLit "0") (AST.PrimLit $ show (len-1))
53 genScheme = AST.ForGn nPar range
54 -- Get the entity name and port names
55 entity_id = ent_id entity
56 argport = map (Monad.liftM fst) (ent_args entity)
57 resport = (Monad.liftM fst) (ent_res entity)
59 inport = mkAssocElemIndexed (head argport) (varToString arg) nPar
60 outport = mkAssocElemIndexed resport (varToString res) nPar
61 clk_port = mkAssocElem (Just $ mkVHDLExtId "clk") "clk"
62 portassigns = Maybe.catMaybes [inport,outport,clk_port]
63 -- Generate the portmap
64 mapLabel = "map" ++ (AST.fromVHDLId entity_id)
65 compins = mkComponentInst mapLabel entity_id portassigns
66 -- Return the generate functions
67 genSm = AST.GenerateSm label genScheme [] [compins]
69 -- Returns the VHDLId of the vector function with the given name for the given
70 -- element type. Generates -- this function if needed.
71 vectorFunId :: Type.Type -> String -> VHDLSession AST.VHDLId
72 vectorFunId el_ty fname = do
73 elemTM <- vhdl_ty el_ty
74 -- TODO: This should not be duplicated from mk_vector_ty. Probably but it in
75 -- the VHDLState or something.
76 let vectorTM = mkVHDLExtId $ "vector_" ++ (AST.fromVHDLId elemTM)
77 typefuns <- getA vsTypeFuns
78 case Map.lookup (OrdType el_ty, fname) typefuns of
79 -- Function already generated, just return it
80 Just (id, _) -> return id
81 -- Function not generated yet, generate it
83 let functions = genUnconsVectorFuns elemTM vectorTM
84 case lookup fname functions of
86 modA vsTypeFuns $ Map.insert (OrdType el_ty, fname) (function_id, body)
88 Nothing -> error $ "I don't know how to generate vector function " ++ fname
90 function_id = mkVHDLExtId fname
92 genUnconsVectorFuns :: AST.TypeMark -- ^ type of the vector elements
93 -> AST.TypeMark -- ^ type of the vector
94 -> [(String, AST.SubProgBody)]
95 genUnconsVectorFuns elemTM vectorTM =
96 [ (exId, AST.SubProgBody exSpec [] [exExpr])
97 , (replaceId, AST.SubProgBody replaceSpec [AST.SPVD replaceVar] [replaceExpr,replaceRet])
98 , (headId, AST.SubProgBody headSpec [] [headExpr])
99 , (lastId, AST.SubProgBody lastSpec [] [lastExpr])
100 , (initId, AST.SubProgBody initSpec [AST.SPVD initVar] [initExpr, initRet])
101 , (tailId, AST.SubProgBody tailSpec [AST.SPVD tailVar] [tailExpr, tailRet])
102 , (takeId, AST.SubProgBody takeSpec [AST.SPVD takeVar] [takeExpr, takeRet])
103 , (dropId, AST.SubProgBody dropSpec [AST.SPVD dropVar] [dropExpr, dropRet])
104 , (plusgtId, AST.SubProgBody plusgtSpec [AST.SPVD plusgtVar] [plusgtExpr, plusgtRet])
105 , (emptyId, AST.SubProgBody emptySpec [AST.SPVD emptyVar] [emptyExpr])
106 , (singletonId, AST.SubProgBody singletonSpec [AST.SPVD singletonVar] [singletonRet])
107 , (copyId, AST.SubProgBody copySpec [AST.SPVD copyVar] [copyExpr])
110 ixPar = AST.unsafeVHDLBasicId "ix"
111 vecPar = AST.unsafeVHDLBasicId "vec"
112 nPar = AST.unsafeVHDLBasicId "n"
113 iId = AST.unsafeVHDLBasicId "i"
115 aPar = AST.unsafeVHDLBasicId "a"
116 resId = AST.unsafeVHDLBasicId "res"
117 exSpec = AST.Function (mkVHDLExtId exId) [AST.IfaceVarDec vecPar vectorTM,
118 AST.IfaceVarDec ixPar naturalTM] elemTM
119 exExpr = AST.ReturnSm (Just $ AST.PrimName $ AST.NIndexed
120 (AST.IndexedName (AST.NSimple vecPar) [AST.PrimName $
122 replaceSpec = AST.Function (mkVHDLExtId replaceId) [ AST.IfaceVarDec vecPar vectorTM
123 , AST.IfaceVarDec iPar naturalTM
124 , AST.IfaceVarDec aPar elemTM
126 -- variable res : fsvec_x (0 to vec'length-1);
129 (AST.SubtypeIn vectorTM
130 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
131 [AST.ToRange (AST.PrimLit "0")
132 (AST.PrimName (AST.NAttribute $
133 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing) AST.:-:
134 (AST.PrimLit "1")) ]))
136 -- res AST.:= vec(0 to i-1) & a & vec(i+1 to length'vec-1)
137 replaceExpr = AST.NSimple resId AST.:=
138 (vecSlice (AST.PrimLit "0") (AST.PrimName (AST.NSimple iPar) AST.:-: AST.PrimLit "1") AST.:&:
139 AST.PrimName (AST.NSimple aPar) AST.:&:
140 vecSlice (AST.PrimName (AST.NSimple iPar) AST.:+: AST.PrimLit "1")
141 ((AST.PrimName (AST.NAttribute $
142 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing))
143 AST.:-: AST.PrimLit "1"))
144 replaceRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
145 vecSlice init last = AST.PrimName (AST.NSlice
148 (AST.ToRange init last)))
149 headSpec = AST.Function (mkVHDLExtId headId) [AST.IfaceVarDec vecPar vectorTM] elemTM
151 headExpr = AST.ReturnSm (Just $ (AST.PrimName $ AST.NIndexed (AST.IndexedName
152 (AST.NSimple vecPar) [AST.PrimLit "0"])))
153 lastSpec = AST.Function (mkVHDLExtId lastId) [AST.IfaceVarDec vecPar vectorTM] elemTM
154 -- return vec(vec'length-1);
155 lastExpr = AST.ReturnSm (Just $ (AST.PrimName $ AST.NIndexed (AST.IndexedName
157 [AST.PrimName (AST.NAttribute $
158 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing)
159 AST.:-: AST.PrimLit "1"])))
160 initSpec = AST.Function (mkVHDLExtId initId) [AST.IfaceVarDec vecPar vectorTM] vectorTM
161 -- variable res : fsvec_x (0 to vec'length-2);
164 (AST.SubtypeIn vectorTM
165 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
166 [AST.ToRange (AST.PrimLit "0")
167 (AST.PrimName (AST.NAttribute $
168 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing) AST.:-:
169 (AST.PrimLit "2")) ]))
171 -- resAST.:= vec(0 to vec'length-2)
172 initExpr = AST.NSimple resId AST.:= (vecSlice
174 (AST.PrimName (AST.NAttribute $
175 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing)
176 AST.:-: AST.PrimLit "2"))
177 initRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
178 tailSpec = AST.Function (mkVHDLExtId tailId) [AST.IfaceVarDec vecPar vectorTM] vectorTM
179 -- variable res : fsvec_x (0 to vec'length-2);
182 (AST.SubtypeIn vectorTM
183 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
184 [AST.ToRange (AST.PrimLit "0")
185 (AST.PrimName (AST.NAttribute $
186 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing) AST.:-:
187 (AST.PrimLit "2")) ]))
189 -- res AST.:= vec(1 to vec'length-1)
190 tailExpr = AST.NSimple resId AST.:= (vecSlice
192 (AST.PrimName (AST.NAttribute $
193 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing)
194 AST.:-: AST.PrimLit "1"))
195 tailRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
196 takeSpec = AST.Function (mkVHDLExtId takeId) [AST.IfaceVarDec nPar naturalTM,
197 AST.IfaceVarDec vecPar vectorTM ] vectorTM
198 -- variable res : fsvec_x (0 to n-1);
201 (AST.SubtypeIn vectorTM
202 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
203 [AST.ToRange (AST.PrimLit "0")
204 ((AST.PrimName (AST.NSimple nPar)) AST.:-:
205 (AST.PrimLit "1")) ]))
207 -- res AST.:= vec(0 to n-1)
208 takeExpr = AST.NSimple resId AST.:=
209 (vecSlice (AST.PrimLit "1")
210 (AST.PrimName (AST.NSimple $ nPar) AST.:-: AST.PrimLit "1"))
211 takeRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
212 dropSpec = AST.Function (mkVHDLExtId dropId) [AST.IfaceVarDec nPar naturalTM,
213 AST.IfaceVarDec vecPar vectorTM ] vectorTM
214 -- variable res : fsvec_x (0 to vec'length-n-1);
217 (AST.SubtypeIn vectorTM
218 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
219 [AST.ToRange (AST.PrimLit "0")
220 (AST.PrimName (AST.NAttribute $
221 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing) AST.:-:
222 (AST.PrimName $ AST.NSimple nPar)AST.:-: (AST.PrimLit "1")) ]))
224 -- res AST.:= vec(n to vec'length-1)
225 dropExpr = AST.NSimple resId AST.:= (vecSlice
226 (AST.PrimName $ AST.NSimple nPar)
227 (AST.PrimName (AST.NAttribute $
228 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing)
229 AST.:-: AST.PrimLit "1"))
230 dropRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
231 plusgtSpec = AST.Function (mkVHDLExtId plusgtId) [AST.IfaceVarDec aPar elemTM,
232 AST.IfaceVarDec vecPar vectorTM] vectorTM
233 -- variable res : fsvec_x (0 to vec'length);
236 (AST.SubtypeIn vectorTM
237 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
238 [AST.ToRange (AST.PrimLit "0")
239 (AST.PrimName (AST.NAttribute $
240 AST.AttribName (AST.NSimple vecPar) (mkVHDLExtId lengthId) Nothing))]))
242 plusgtExpr = AST.NSimple resId AST.:=
243 ((AST.PrimName $ AST.NSimple aPar) AST.:&:
244 (AST.PrimName $ AST.NSimple vecPar))
245 plusgtRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
246 emptySpec = AST.Function (mkVHDLExtId emptyId) [] vectorTM
249 (AST.SubtypeIn vectorTM
250 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
251 [AST.ToRange (AST.PrimLit "0")
252 (AST.PrimLit "-1")]))
254 emptyExpr = AST.ReturnSm (Just $ AST.PrimName (AST.NSimple resId))
255 singletonSpec = AST.Function (mkVHDLExtId singletonId) [AST.IfaceVarDec aPar elemTM ]
257 -- variable res : fsvec_x (0 to 0) := (others => a);
260 (AST.SubtypeIn vectorTM
261 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
262 [AST.ToRange (AST.PrimLit "0") (AST.PrimLit "0")]))
263 (Just $ AST.Aggregate [AST.ElemAssoc (Just AST.Others)
264 (AST.PrimName $ AST.NSimple aPar)])
265 singletonRet = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)
266 copySpec = AST.Function (mkVHDLExtId copyId) [AST.IfaceVarDec nPar naturalTM,
267 AST.IfaceVarDec aPar elemTM ] vectorTM
268 -- variable res : fsvec_x (0 to n-1) := (others => a);
271 (AST.SubtypeIn vectorTM
272 (Just $ AST.ConstraintIndex $ AST.IndexConstraint
273 [AST.ToRange (AST.PrimLit "0")
274 ((AST.PrimName (AST.NSimple nPar)) AST.:-:
275 (AST.PrimLit "1")) ]))
276 (Just $ AST.Aggregate [AST.ElemAssoc (Just AST.Others)
277 (AST.PrimName $ AST.NSimple aPar)])
279 copyExpr = AST.ReturnSm (Just $ AST.PrimName $ AST.NSimple resId)