3a_asm: .ascii directive

[calu.git] / 3a_asm / DTFormat.hs

diff --git a/3a_asm/DTFormat.hs b/3a_asm/DTFormat.hs
index 819e083afe3a8e6e493c6c2ffdd9c616cc43dd26..17b2f014c8bc737dab587f75dc2bfbcabff301ce 100644 (file)
--- a/3a_asm/DTFormat.hs
+++ b/3a_asm/DTFormat.hs
@@ -1,21 +1,41 @@
 module DTFormat where
 
+import Numeric
 import Data.Word
+import Data.Char
 import Text.Printf
+import Text.Parsec
+import Text.Parsec.String
+import Text.Parsec.Combinator
+import Text.Parsec.Expr
+import Text.ParserCombinators.Parsec.Token
+import Text.ParserCombinators.Parsec.Expr
+import Control.Monad
+
+data DT_State = NoState | InData | InText deriving (Show,Eq)
 
 type Address = Word32
 type Value = Word32
+type Repeat = Word32
 type ValueToParse = String
 type Code = String
 type Label = String
 type Comment = String
+type Ascii = String
 
 data DTF =
-       DTF_Data Address Value Code Label Comment |
-       DTF_Instr Address Value Code Label Comment |
-       DTF_Comment Comment |
-       DTF_Label Label |
-       DTF_ToParse Address ValueToParse Code Label Comment
+       DTF_Data Address Value Code Label Comment | -- 0;...
+       DTF_Instr Address Value Code Label Comment | -- 1;...
+       DTF_Comment Comment | -- 2;...
+       DTF_Label Label Comment Address | -- 3;...
+       -- types for intern processing
+       DTF_InstrToParse Address ValueToParse Code Label Comment |
+       DTF_SectionToDet Address Value Code Label Comment |
+       DTF_Org Address |
+       DTF_Define Label Value Comment |
+       DTF_Fill Repeat Value Label Code Comment |
+       DTF_Ascii String Label Code Comment |
+       DTF_State DT_State
 
 instance Show (DTF) where
        showsPrec n = showsDTF
@@ -24,10 +44,50 @@ showsDTF :: DTF -> ShowS
 showsDTF (DTF_Data a v c l s) = (++) (datins "0" a v c l s)
 showsDTF (DTF_Instr a v c l s) = (++) (datins "1" a v c l s)
 showsDTF (DTF_Comment c) = (++) (printf "2;%s\n" c)
-showsDTF (DTF_Label l) = (++) (printf "3;%s\n" l)
-showsDTF (DTF_ToParse a v c l s) = (++) (printf "lulz\n")
-
+showsDTF (DTF_Label l c _) = (++) (printf "3;%s;%s\n" l c)
+showsDTF (DTF_InstrToParse a v c l s) = (++) (printf "itp;%08x;%s;%s;%s;%s\n" a v c l s)
+showsDTF (DTF_SectionToDet a v c l s) = (++) (datins "std" a v c l s)
+showsDTF (DTF_Org a) = (++) (printf "org;%08x\n" a)
+showsDTF (DTF_Define l a c) = (++) (printf "def;%s;%08x;%s\n" l a c)
+showsDTF (DTF_Fill r v code l c) = (++) (printf "fill;%08x;%08x;%s;%s;%s\n" r v code l c)
+showsDTF (DTF_Ascii str l code c) = (++) (printf "ascii;%s;%s;%s;%s" str code l c)
+showsDTF (DTF_State s) = (++) (printf "sta;%s\n" (show s))
 
 datins :: String -> Address -> Value -> Code -> Label -> Comment -> String
 datins = printf "%s;%08x;%08x;%s;%s;%s\n"
 
+tobin :: Value -> String
+tobin v = reverse $ take 32 $ reverse $ (['0' | _<-[0..32]]) ++ (showIntAtBase 2 (chr. ((+)0x30)) v "")
+
+showsDTFBase :: DTF -> Int -> ShowS
+showsDTFBase (DTF_Data a v c l s) 2 = (++) (datinsBin "0" a (tobin v) c l s)
+showsDTFBase (DTF_Instr a v c l s) 2 = (++) (datinsBin "1" a (tobin v) c l s)
+showsDTFBase d _ = showsDTF d
+
+datinsBin :: String -> Address -> String -> Code -> Label -> Comment -> String
+datinsBin = printf "%s;%08x;%s;%s;%s;%s\n"
+
+-- datastructure for managing labels and defines
+type Dict = (Address,[DictElem])
+type DictElem = (String,Word32)
+
+get_elem :: String -> [DictElem] -> Word32
+get_elem s dict = case (lookup s dict) of
+               Nothing -> error ("unknown label or define: \"" ++ s ++ "\"")
+               Just z -> z
+
+add_elem :: [DictElem] -> (String,Word32) -> [DictElem]
+add_elem dic (s,w)
+       | s == "" = dic -- ignore empty string
+       | already_in =  error ("Label or define \"" ++ s ++ "\" already exists")
+       | otherwise = (s,w):dic
+       where
+       already_in = case (lookup s dic) of
+               Just _ -> True
+               Nothing -> False
+
+-- some common functions
+parseMySpaces :: Parser String
+parseMySpaces = do
+       ret <- many $ oneOf "\t "
+       return $ ret