:: SSMProgram :== [Instr]
:: GenError = Error String
:: Addressbook :== 'Map'.Map String Address
-:: Address = LAB String Int Int | ADDR Int
+:: Address = LAB String Int Int | ADDR Int Int
:: Gen a :== RWST () SSMProgram (Addressbook, [Label]) (Either GenError) a
labelStream :: [Label]
fS :: [String] Int -> SSMProgram
fS [] _ = []
fS [k:xs] n = [
- Instr "lds" [Lit 0] ""
+ Lab $ "1next" +++ toString n
+ ,Instr "ldr" [Raw "R5"] ""
,Instr "ldc" [Lit n] $ "branch to: " +++ k
,Instr "eq" [] ""
- ,Instr "ajs" [Lit -1] ""
- ,Instr "bsr" [L k] ""
+ ,Instr "brf" [L $ "1next" +++ (toString $ n + 1)] ""
+ ,Instr "bra" [L k] ""
:fS xs $ n+1]
context :: SSMProgram
context = [Lab "1printint"
>>| g e2
>>| tell [Instr "stmh" [Lit 2] ""]
g (VarExpr _ (VarDef k fs)) = getAdressbook >>= \ab->case 'Map'.get k ab of
- Just (ADDR t) = tell [Instr "ldl" [Lit t] ""] >>| mapM_ g fs >>| pure ()
+ Just (ADDR t arity) = tell [Instr "ldl" [Lit t] ""] >>| mapM_ g fs >>| pure ()
Just (LAB l _ fn) = tell
[Instr "ldc" [Lit fn] ""
- ,Instr "sth" [] ""
,Instr "ldc" [Lit 0] ""
- ,Instr "sth" [] ""]
+ ,Instr "stmh" [Lit 2] ""]
g (FunExpr _ k es fs) = getAdressbook >>= \ab->case 'Map'.get k ab of
//Identifier points to function
Just (LAB l arity fn) = if (arity <> (length es))
+ //Function is not complete
( tell
[Instr "ldc" [Lit fn] "Store function number"
,Instr "sth" [] ""
>>| if (isEmpty es) (pure ()) (tell
[Instr "stmh" [Lit $ length es] "Store arguments"
,Instr "ajs" [Lit -1] ""]))
+ //Function is complete
( mapM_ g es
>>| jump "bsr" k
>>| tell
[Instr "ajs" [Lit $ ~(length es)] "Clean arguments"
,Instr "ldr" [Raw "RR"] ""])
//Identifier points to variable, thus higher order function
- Just (ADDR t) = liftT (Left $ Error "FunExpr to addr")
+ Just (ADDR t arity) = if (arity <> (length es))
+ //Function is still not complete
+ ( fresh >>= \finish->fresh >>= \start->tell [
+ //Store function number
+ Instr "ldl" [Lit t] "STARTING HIGHER ORDER UPDATE"
+ ,Instr "ldh" [Lit 0] "get function number"
+ ,Instr "sth" [] "Store"
+ //Store function arity
+ ,Instr "ldl" [Lit t] "get pointer again"
+ ,Instr "ldh" [Lit 1] "get function arity"
+ ,Instr "ldc" [Lit $ length es] "add argument number"
+ ,Instr "add" [] "add"
+ ,Instr "sth" [] "Store"
+ ,Instr "ajs" [Lit -1] "Adjust pointer"
+ //load the arguments
+ ,Instr "ldl" [Lit t] ""
+ ,Instr "ldh" [Lit 1] "Load available arguments"
+ ,Instr "str" [Raw "R5"] "Store available args in register"
+ ,Instr "ldc" [Lit 0] "Store offset"
+ ,Instr "str" [Raw "R6"] "Store offset in register"
+ ,Lab start
+ ,Instr "ldr" [Raw "R5"] ""
+ ,Instr "ldc" [Lit 0] ""
+ ,Instr "eq" [] ""
+ ,Instr "brt" [L finish] "Done pushing arg, bye"
+ //Load heapadress
+ ,Instr "ldl" [Lit t] ""
+ ,Instr "ldr" [Raw "R6"] ""
+ ,Instr "add" [] "Corrected heapaddress"
+ ,Instr "ldh" [Lit 2] "Load argument"
+ ,Instr "sth" [] "And store it immediatly after"
+ //Decrease available arguments
+ ,Instr "ldr" [Raw "R5"] ""
+ ,Instr "ldc" [Lit 1] ""
+ ,Instr "sub" [] ""
+ ,Instr "str" [Raw "R5"] ""
+ //Increase available arguments
+ ,Instr "ldr" [Raw "R6"] ""
+ ,Instr "ldc" [Lit 1] ""
+ ,Instr "add" [] ""
+ ,Instr "str" [Raw "R6"] ""
+ ,Instr "bra" [L start] ""
+ ,Lab finish
+ ]
+ >>| mapM_ g es
+ >>| tell
+ [Instr "stmh" [Lit $ length es] "Store extra args"
+ ,Instr "ajs" [Lit -1] ""]
+ )
+ //Function is complete
+ ( fresh >>= \finish->fresh >>= \start->tell [
+ Instr "ldl" [Lit t] "STARTING HIGHER ORDER CALL"
+ ,Instr "ldh" [Lit 1] "Load available arguments"
+ ,Instr "str" [Raw "R5"] "Store available args in register"
+ ,Instr "ldc" [Lit 0] "Store offset"
+ ,Instr "str" [Raw "R6"] "Store offset in register"
+
+ ,Lab start
+ ,Instr "ldr" [Raw "R5"] ""
+ ,Instr "ldc" [Lit 0] ""
+ ,Instr "eq" [] ""
+ ,Instr "brt" [L finish] "Done pushing arg, bye"
+ //Load heapadress
+ ,Instr "ldl" [Lit t] ""
+ ,Instr "ldr" [Raw "R6"] ""
+ ,Instr "add" [] "Corrected heapaddress"
+ ,Instr "ldh" [Lit 2] "Load argument"
+ //Decrease available arguments
+ ,Instr "ldr" [Raw "R5"] ""
+ ,Instr "ldc" [Lit 1] ""
+ ,Instr "sub" [] ""
+ ,Instr "str" [Raw "R5"] ""
+ //Increase available arguments
+ ,Instr "ldr" [Raw "R6"] ""
+ ,Instr "ldc" [Lit 1] ""
+ ,Instr "add" [] ""
+ ,Instr "str" [Raw "R6"] ""
+ ,Instr "bra" [L start] ""
+ ,Lab finish
+ ]
+ >>| mapM_ g es
+ >>| tell
+ [Instr "ldl" [Lit t] ""
+ ,Instr "ldh" [Lit 0] "Get function number"
+ ,Instr "str" [Raw "R5"] ""
+ ,Instr "bsr" [L "1func"] ""
+ ,Instr "ldr" [Raw "MP"] ""
+ ,Instr "ldc" [Lit t] ""
+ ,Instr "add" [] ""
+ ,Instr "str" [Raw "SP"] ""
+ ,Instr "ldr" [Raw "RR"] ""
+ ]
+ )
Nothing = liftT (Left $ Error "Undefined function!!!")
jump :: String String -> Gen ()
jump instr k = getAdressbook >>= \ab->case 'Map'.get k ab of
Nothing = liftT (Left $ Error $ concat ["PANIC: ", k, " not found as function"])
Just (LAB t _ _) = tell [Instr instr [L t] (k +++"()")]
- Just (ADDR t) = liftT (Left $ Error "Address as jump???")
+ Just (ADDR t arity) = abort "NO ADDRESS JUMPING FFS"
instance g Stmt where
g (IfStmt cond th el) =
g e >>| getAdressbook >>= \ab->case 'Map'.get k ab of
Nothing = liftT (Left $ Error $ concat ["PANIC: ", k, " not found as var"])
Just (LAB t _ _) = liftT (Left $ Error $ "PANIC: cannot assign to function")
- Just (ADDR t) = tell [Instr "stl" [Lit t] ""]
+ Just (ADDR t ar) = tell [Instr "stl" [Lit t] ""]
g (FunStmt k es fs) = mapM_ g es
>>| jump "bsr" k
>>| tell [Instr "ajs" [Lit (~(length es))] ""] //clean up args
foldVarDecl :: Int VarDecl -> Gen Int
foldVarDecl x (VarDecl _ mt k e) = g e
>>| annote x k
- >>| updateAdressbook (extend k (ADDR x))
+ >>| updateAdressbook (extend k (ADDR x $ arity $ fromJust mt))
>>| pure (x + 1)
-addVars :: [String] -> (Addressbook -> Addressbook)
-addVars [] = id
-addVars [x:xs] = \ab->extend x (ADDR (-2 - (length xs))) (addVars xs ab)
+arity :: Type -> Int
+arity (_ ->> x) = 1 + arity x
+arity _ = 0
+
+addVars :: Type [String] -> (Addressbook -> Addressbook)
+addVars _ [] = id
+addVars (t ->> ts) [x:xs] = \ab->
+ extend x (ADDR (-2 - (length xs)) (arity t)) (addVars ts xs ab)
+addVars t [x] = \ab->
+ extend x (ADDR -2 0) ab
instance g FunDecl where
- g (FunDecl _ k args _ vds stms) =
+ g (FunDecl _ k args mt vds stms) =
//varDecls can call the enclosing function, so first reserve a label for it
getAdressbook >>= \oldMap ->
- updateAdressbook (addVars args) >>|
+ updateAdressbook (addVars (fromJust mt) args) >>|
tell [Lab k] >>|
tell [Instr "link" [Lit 0] ""] >>|
//add the vars
repositories / cc1516.git / blobdiff