import Data.BinaryState
import Data.Int
import Data.Maybe
-import Data.List (genericLength)
+import Data.List (genericLength, find)
import qualified Data.Map as M
+import qualified Data.Bimap as BI
import qualified Data.ByteString.Lazy as B
import Control.Monad
import Control.Applicative
import JVM.Assembler hiding (Instruction)
import JVM.ClassFile
-import Harpy
+import Harpy hiding (fst)
import Harpy.X86Disassembler
import Mate.BasicBlocks
import Mate.ClassHierarchy
import {-# SOURCE #-} Mate.MethodPool
import Mate.Strings
+import Mate.Debug
foreign import ccall "&mallocObjectGC"
type BBStarts = M.Map BlockID Int
-type CompileInfo = (EntryPoint, BBStarts, Int, TrapMap)
+type CompileInfo = (EntryPoint, Int, TrapMap)
-emitFromBB :: Class Direct -> RawMethod -> CodeGen e s (CompileInfo, [Instruction])
-emitFromBB cls method = do
+emitFromBB :: Class Direct -> MethodInfo -> RawMethod -> CodeGen e JpcNpcMap (CompileInfo, [Instruction])
+emitFromBB cls miThis method = do
let keys = M.keys hmap
llmap <- mapM (newNamedLabel . (++) "bb_" . show) keys
let lmap = zip keys llmap
push ebp
mov ebp esp
sub esp (fromIntegral (rawLocals method) * ptrSize :: Word32)
-
- (calls, bbstarts) <- efBB (0, hmap M.! 0) M.empty M.empty lmap
+ calls <- M.fromList . catMaybes . concat <$> mapM (efBB lmap) keys
d <- disassemble
end <- getCodeOffset
- return ((ep, bbstarts, end, calls), d)
+ return ((ep, end, calls), d)
where
hmap = rawMapBB method
getLabel :: BlockID -> [(BlockID, Label)] -> Label
- getLabel _ [] = error "label not found!"
+ getLabel bid [] = error $ "label " ++ show bid ++ " not found"
getLabel i ((x,l):xs) = if i==x then l else getLabel i xs
- efBB :: (BlockID, BasicBlock) -> TrapMap -> BBStarts -> [(BlockID, Label)] -> CodeGen e s (TrapMap, BBStarts)
- efBB (bid, bb) calls bbstarts lmap =
- if M.member bid bbstarts then
- return (calls, bbstarts)
- else do
- bb_offset <- getCodeOffset
- let bbstarts' = M.insert bid bb_offset bbstarts
- defineLabel $ getLabel bid lmap
- cs <- mapM emit'' $ code bb
- let calls' = calls `M.union` M.fromList (catMaybes cs)
- case successor bb of
- Return -> return (calls', bbstarts')
+ efBB :: [(BlockID, Label)] -> BlockID -> CodeGen e JpcNpcMap [(Maybe (Word32, TrapCause))]
+ efBB lmap bid = do
+ defineLabel $ getLabel bid lmap
+ retval <- mapM emit'' $ code bb
+ case successor bb of
FallThrough t -> do
-- TODO(bernhard): le dirty hax. see java/lang/Integer.toString(int, int)
jmp (getLabel t lmap)
- efBB (t, hmap M.! t) calls' bbstarts' lmap
- OneTarget t -> efBB (t, hmap M.! t) calls' bbstarts' lmap
- TwoTarget t1 t2 -> do
- (calls'', bbstarts'') <- efBB (t1, hmap M.! t1) calls' bbstarts' lmap
- efBB (t2, hmap M.! t2) calls'' bbstarts'' lmap
- -- TODO(bernhard): also use metainformation
- -- TODO(bernhard): implement `emit' as function which accepts a list of
- -- instructions, so we can use patterns for optimizations
+ _ -> return ()
+ return retval
where
+ bb = hmap M.! bid
+
forceRegDump :: CodeGen e s ()
forceRegDump = do
push esi
getCurrentOffset :: CodeGen e s Word32
getCurrentOffset = do
- ep <- (fromIntegral . ptrToIntPtr) `liftM` getEntryPoint
- offset <- fromIntegral `liftM` getCodeOffset
+ ep <- (fromIntegral . ptrToIntPtr) <$> getEntryPoint
+ offset <- fromIntegral <$> getCodeOffset
return $ ep + offset
emitInvoke :: Word16 -> Bool -> CodeGen e s (Maybe (Word32, TrapCause))
-- like: call $0x01234567
calladdr <- emitSigIllTrap 5
let patcher reip = do
- entryAddr <- liftIO $ getMethodEntry l
+ (entryAddr, _) <- liftIO $ getMethodEntry l
call (fromIntegral (entryAddr - (reip + 5)) :: NativeWord)
return reip
-- discard arguments on stack
-- depending on the method-table-ptr
return $ Just (calladdr, VirtualCall isInterface mi offset)
- emit'' :: J.Instruction -> CodeGen e s (Maybe (Word32, TrapCause))
- emit'' insn = newNamedLabel ("jvm_insn: " ++ show insn) >>= defineLabel >> emit' insn
+ emit'' :: (Int, J.Instruction) -> CodeGen e JpcNpcMap (Maybe (Word32, TrapCause))
+ emit'' (jpc, insn) = do
+ npc <- getCurrentOffset
+ jpcrpc <- getState
+ setState (BI.insert jpc npc jpcrpc)
+ newNamedLabel ("jvm_insn: " ++ show insn) >>= defineLabel >> emit' insn
emit' :: J.Instruction -> CodeGen e s (Maybe (Word32, TrapCause))
emit' (INVOKESPECIAL cpidx) = emitInvoke cpidx True
return $ Just (trapaddr, NewObject patcher)
emit' ATHROW = do
+ pop eax
+ push eax
+ mov eax (Disp 0, eax)
trapaddr <- emitSigIllTrap 2
- let patcher resp reip = do
+ let patcher :: TrapPatcherEaxEsp
+ patcher reax resp reip = do
+ liftIO $ printfJit $ printf "reip: %d\n" (fromIntegral reip :: Word32)
+ liftIO $ printfJit $ printf "reax: %d\n" (fromIntegral reax :: Word32)
+ (_, jnmap) <- liftIO $ getMethodEntry miThis
+ liftIO $ printfJit $ printf "size: %d\n" (BI.size jnmap)
+ liftIO $ printfJit $ printf "jnmap: %s\n" (show $ BI.toList jnmap)
+ -- TODO: (-4) is a hack (due to the insns above)
+ let jpc = fromIntegral (jnmap BI.!> (fromIntegral reip - 4))
+ let exceptionmap = rawExcpMap method
+ liftIO $ printfJit $ printf "exmap: %s\n" (show $ M.toList exceptionmap)
+ let key =
+ case find f $ M.keys exceptionmap of
+ Just x -> x
+ Nothing -> error "exception: no handler found. (TODO1)"
+ where
+ f (x, y) = jpc >= x && jpc <= y
+ liftIO $ printfJit $ printf "exception: key is: %s\n" (show key)
+ let handlerJPCs = exceptionmap M.! key
+ let f (x, y) = do x' <- getMethodTable x; return (fromIntegral x', y)
+ handlers <- liftIO $ mapM f handlerJPCs
+ liftIO $ printfJit $ printf "exception: handlers: %s\n" (show handlers)
+ let handlerJPC =
+ case find ((==) reax . fst) handlers of
+ Just x -> x
+ Nothing -> error "exception: no handler found (TODO2)"
+ let handlerNPC = jnmap BI.! (fromIntegral $ snd handlerJPC)
+ liftIO $ printfJit $ printf "exception: handler at: 0x%08x\n" handlerNPC
emitSigIllTrap 2
- return reip
+ return $ fromIntegral handlerNPC
return $ Just (trapaddr, ThrowException patcher)
emit' insn = emit insn >> return Nothing
projects / mate.git / blobdiff