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Analyze bfore mitting

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This commit is contained in:
Cat's Eye Technologies 2014-04-04 15:45:49 +01:00
parent c66b339181
commit b455709ef1
3 changed files with 52 additions and 5 deletions
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4
eg/demo.60p
View File

@ -1,4 +1,4 @@
assign byte table screen $0400
assign byte table screen $0400
assign byte table screen2 1274
assign byte table screen3 1524
assign byte table screen4 1774
@ -29,7 +29,7 @@ routine main {
jsr reset_position
jsr clear_screen
sei {
copy vector cinv to save_cinv
copy cinv save_cinv
copy routine our_cinv to cinv
}
clc

4
src/Main.hs
View File

@ -38,8 +38,8 @@ main = do
("emit", Right program) ->
case checkAndTransformProgram program of
Just newprog ->
case analyzeProgram newprog of
_ ->
case (length (show (analyzeProgram newprog)) < 9999999) of
True ->
putStr $ emitProgram newprog
(_, Left problem) -> do
hPutStrLn stderr (show problem)

47
src/SixtyPical/Analyzer.hs
View File

@ -31,6 +31,8 @@ analyzeProgram program@(Program decls routines) =
in
checkBlock instrs progCtx routCtx'
-- -- -- -- -- -- -- -- -- -- -- --
checkInstr (COPY src dst) progCtx routCtx =
case Map.lookup src routCtx of
Just (PoisonedWith _) ->
@ -40,6 +42,24 @@ analyzeProgram program@(Program decls routines) =
checkInstr (DELTA dst val) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith (Immediate val)) routCtx
checkInstr (ADD dst src) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith src) routCtx
checkInstr (SUB dst src) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith src) routCtx
checkInstr (AND dst src) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith src) routCtx
checkInstr (OR dst src) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith src) routCtx
checkInstr (XOR dst src) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith src) routCtx
checkInstr (JSR name) progCtx routCtx =
let
Just calledRout = lookupRoutine program name
@ -61,12 +81,39 @@ analyzeProgram program@(Program decls routines) =
-- TODO: oooh, this one's gonna be fun too
--checkBlock blk progCtx routCtx
routCtx
-- TODO -- THESE ARE WEAK --
checkInstr (SEI blk) progCtx routCtx =
checkBlock blk progCtx routCtx
checkInstr (PUSH _ blk) progCtx routCtx =
checkBlock blk progCtx routCtx
checkInstr (BIT dst) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith (Immediate 0)) routCtx
checkInstr (SHR dst flg) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith flg) routCtx
checkInstr (SHL dst flg) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith flg) routCtx
checkInstr (COPYROUTINE name dst) progCtx routCtx =
-- TODO check that dst is not poisoned
Map.insert dst (UpdatedWith (Immediate 7)) routCtx
checkInstr (JMPVECTOR dst) progCtx routCtx =
routCtx
checkInstr NOP progCtx routCtx =
routCtx
{-
checkInstr instr _ _ = error (
"Internal error: sixtypical doesn't know how to " ++
"analyze '" ++ (show instr) ++ "'")
-}
--
-- Utility function: