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.Types
import Mate.Utilities
import Mate.ClassPool
+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 <- getEntryPoint
- let w32_ep = (fromIntegral $ ptrToIntPtr ep) :: Word32
- offset <- getCodeOffset
- return $ w32_ep + fromIntegral offset
+ ep <- (fromIntegral . ptrToIntPtr) <$> getEntryPoint
+ offset <- fromIntegral <$> getCodeOffset
+ return $ ep + offset
emitInvoke :: Word16 -> Bool -> CodeGen e s (Maybe (Word32, TrapCause))
emitInvoke cpidx hasThis = do
let l = buildMethodID cls cpidx
- calladdr <- getCurrentOffset
newNamedLabel (show l) >>= defineLabel
- -- causes SIGILL. in the signal handler we patch it to the acutal call.
- -- place two nop's at the end, therefore the disasm doesn't screw up
- emit32 (0x9090ffff :: Word32); nop
+ -- 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
let argsLen = genericLength args
-- objref lives somewhere on the argument stack
mov ebx (Disp (argsLen * ptrSize), esp)
- if isInterface
- then mov ebx (Disp 0, ebx) -- get method-table-ptr, keep it in ebx
- else return () -- invokevirtual
+ when isInterface $
+ mov ebx (Disp 0, ebx) -- get method-table-ptr, keep it in ebx
-- get method-table-ptr (or interface-table-ptr)
mov eax (Disp 0, ebx)
-- make actual (indirect) call
calladdr <- getCurrentOffset
-- will be patched to this: call (Disp 0xXXXXXXXX, eax)
- emit32 (0x9090ffff :: Word32); nop; nop
+ emitSigIllTrap 6
-- discard arguments on stack (`+1' for "this")
let argcnt = ptrSize * (1 + methodGetArgsCount (methodNameTypeByIdx cls cpidx))
when (argcnt > 0) (add esp argcnt)
-- 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
emit' (GETFIELD x) = do
pop eax -- this pointer
- trapaddr <- getCurrentOffset
-- like: 099db064 ff b0 e4 14 00 00 pushl 5348(%eax)
- emit32 (0x9090ffff :: Word32); nop; nop
+ trapaddr <- emitSigIllTrap 6
let patcher reip = do
let (cname, fname) = buildFieldOffset cls x
offset <- liftIO $ fromIntegral <$> getFieldOffset cname fname
- push32_rel_eax (Disp offset) -- get field
+ push32RelEax (Disp offset) -- get field
return reip
return $ Just (trapaddr, ObjectField patcher)
emit' (PUTFIELD x) = do
pop ebx -- value to write
pop eax -- this pointer
- trapaddr <- getCurrentOffset
-- like: 4581fc6b 89 98 30 7b 00 00 movl %ebx,31536(%eax)
- emit32 (0x9090ffff :: Word32); nop; nop
+ trapaddr <- emitSigIllTrap 6
let patcher reip = do
let (cname, fname) = buildFieldOffset cls x
offset <- liftIO $ fromIntegral <$> getFieldOffset cname fname
- mov32_rel_ebx_eax (Disp offset) -- set field
+ mov32RelEbxEax (Disp offset) -- set field
return reip
return $ Just (trapaddr, ObjectField patcher)
emit' (INSTANCEOF cpidx) = do
pop eax
- mov eax (Disp 0, eax) -- mtable of objectref
- trapaddr <- getCurrentOffset
-- place something like `mov edx $mtable_of_objref' instead
- emit32 (0x9090ffff :: Word32); nop
- cmp eax edx
- sete al
- movzxb eax al
- push eax
- forceRegDump
- return $ Just (trapaddr, InstanceOf $ buildClassID cls cpidx)
+ trapaddr <- emitSigIllTrap 4
+ push (0 :: Word32)
+ let patcher reax reip = do
+ emitSigIllTrap 4
+ let classname = buildClassID cls cpidx
+ check <- liftIO $ isInstanceOf (fromIntegral reax) classname
+ if check
+ then push (1 :: Word32)
+ else push (0 :: Word32)
+ return (reip + 4)
+ return $ Just (trapaddr, InstanceOf patcher)
emit' (NEW objidx) = do
let objname = buildClassID cls objidx
- trapaddr <- getCurrentOffset
-- place something like `push $objsize' instead
- emit32 (0x9090ffff :: Word32); nop
+ trapaddr <- emitSigIllTrap 5
callMalloc
-- 0x13371337 is just a placeholder; will be replaced with mtable ptr
mov (Disp 0, eax) (0x13371337 :: Word32)
return reip
return $ Just (trapaddr, NewObject patcher)
+ emit' ATHROW = do
+ pop eax
+ push eax
+ mov eax (Disp 0, eax)
+ trapaddr <- emitSigIllTrap 2
+ 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 $ fromIntegral handlerNPC
+ return $ Just (trapaddr, ThrowException patcher)
+
emit' insn = emit insn >> return Nothing
emit :: J.Instruction -> CodeGen e s ()
push eax -- push ref again
emit (CHECKCAST _) = nop -- TODO(bernhard): ...
- emit ATHROW = -- TODO(bernhard): ...
- emit32 (0xffffffff :: Word32)
emit I2C = do
pop eax
and eax (0x000000ff :: Word32)
-- (it didn't work for gnu/classpath/SystemProperties.java)
jmp l2
+ emitSigIllTrap :: Int -> CodeGen e s NativeWord
+ emitSigIllTrap traplen = do
+ when (traplen < 2) (error "emitSigIllTrap: trap len too short")
+ trapaddr <- getCurrentOffset
+ -- 0xffff causes SIGILL
+ emit8 (0xff :: Word8); emit8 (0xff :: Word8)
+ -- fill rest up with NOPs
+ sequence_ [nop | _ <- [1 .. (traplen - 2)]]
+ return trapaddr
+
-- for locals we use a different storage
cArgs :: Word8 -> Word32
push32 imm32 = emit8 0x68 >> emit32 imm32
-- call disp32(%eax)
-call32_eax :: Disp -> CodeGen e s ()
-call32_eax (Disp disp32) = emit8 0xff >> emit8 0x90 >> emit32 disp32
+call32Eax :: Disp -> CodeGen e s ()
+call32Eax (Disp disp32) = emit8 0xff >> emit8 0x90 >> emit32 disp32
-- push disp32(%eax)
-push32_rel_eax :: Disp -> CodeGen e s ()
-push32_rel_eax (Disp disp32) = emit8 0xff >> emit8 0xb0 >> emit32 disp32
+push32RelEax :: Disp -> CodeGen e s ()
+push32RelEax (Disp disp32) = emit8 0xff >> emit8 0xb0 >> emit32 disp32
-- mov %ebx, disp32(%eax)
-mov32_rel_ebx_eax :: Disp -> CodeGen e s ()
-mov32_rel_ebx_eax (Disp disp32) = emit8 0x89 >> emit8 0x98 >> emit32 disp32
+mov32RelEbxEax :: Disp -> CodeGen e s ()
+mov32RelEbxEax (Disp disp32) = emit8 0x89 >> emit8 0x98 >> emit32 disp32
projects / mate.git / blobdiff