2 {-# LANGUAGE OverloadedStrings #-}
3 {-# LANGUAGE ForeignFunctionInterface #-}
4 module Mate.MethodPool where
7 import Data.String.Utils
8 import qualified Data.Map as M
9 import qualified Data.Set as S
10 import qualified Data.ByteString.Lazy as B
14 import Foreign.C.Types
15 import Foreign.C.String
21 import Harpy.X86Disassembler
26 import Mate.BasicBlocks
28 import Mate.X86CodeGen
33 foreign import ccall "dynamic"
34 code_void :: FunPtr (IO ()) -> (IO ())
36 foreign export ccall getTrapType :: CUInt -> CUInt -> IO CUInt
37 getTrapType :: CUInt -> CUInt -> IO CUInt
38 getTrapType signal_from from2 = do
39 tmap <- get_trapmap >>= ptr2trapmap
40 case M.lookup (fromIntegral signal_from) tmap of
41 (Just (MI _)) -> return 0
42 (Just (VI _)) -> return 1
43 (Just (SFI _)) -> return 2
44 (Just (II _)) -> return 4
45 -- maybe we've a hit on the second `from' value
46 Nothing -> case M.lookup (fromIntegral from2) tmap of
47 (Just (VI _)) -> return 1
48 (Just (II _)) -> return 4
49 (Just _) -> error $ "getTrapType: abort #1 :-("
50 Nothing -> error $ "getTrapType: abort #2 :-("
52 foreign export ccall getMethodEntry :: CUInt -> CUInt -> IO CUInt
53 getMethodEntry :: CUInt -> CUInt -> IO CUInt
54 getMethodEntry signal_from methodtable = do
55 mmap <- get_methodmap >>= ptr2methodmap
56 tmap <- get_trapmap >>= ptr2trapmap
57 vmap <- get_virtualmap >>= ptr2virtualmap
59 let w32_from = fromIntegral signal_from
60 let mi = tmap M.! w32_from
61 let mi'@(MethodInfo method cm sig) =
64 (VI (MethodInfo methname _ msig)) ->
65 (MethodInfo methname (vmap M.! (fromIntegral methodtable)) msig)
66 (II (MethodInfo methname _ msig)) ->
67 (MethodInfo methname (vmap M.! (fromIntegral methodtable)) msig)
68 _ -> error $ "getMethodEntry: no trapInfo. abort."
69 case M.lookup mi' mmap of
71 cls <- getClassFile cm
73 printf "getMethodEntry(from 0x%08x): no method \"%s\" found. compile it\n" w32_from (show mi')
75 mm <- lookupMethodRecursive method [] cls
77 Just (mm', clsnames, cls') -> do
78 let flags = methodAccessFlags mm'
79 case S.member ACC_NATIVE flags of
81 hmap <- parseMethod cls' method
84 entry <- compileBB hmap' (MethodInfo method (thisClass cls') sig)
85 addMethodRef entry mi' clsnames
86 return $ fromIntegral entry
87 Nothing -> error $ (show method) ++ " not found. abort"
89 -- TODO(bernhard): cleaner please... *do'h*
90 let symbol = (replace "/" "_" $ toString cm) ++ "__" ++ (toString method) ++ "__" ++ (replace ";" "_" $ replace "/" "_" $ replace "(" "_" (replace ")" "_" $ toString $ encode sig))
92 printf "native-call: symbol: %s\n" symbol
94 nf <- loadNativeFunction symbol
95 let w32_nf = fromIntegral nf
96 let mmap' = M.insert mi' w32_nf mmap
97 methodmap2ptr mmap' >>= set_methodmap
99 Nothing -> error $ (show method) ++ " not found. abort"
100 Just w32 -> return (fromIntegral w32)
102 lookupMethodRecursive :: B.ByteString -> [B.ByteString] -> Class Resolved
103 -> IO (Maybe ((Method Resolved, [B.ByteString], Class Resolved)))
104 lookupMethodRecursive name clsnames cls = do
106 Just x -> return $ Just (x, nextclsn, cls)
107 Nothing -> if thisname == "java/lang/Object"
108 then return $ Nothing
110 supercl <- getClassFile (superClass cls)
111 lookupMethodRecursive name nextclsn supercl
113 res = lookupMethod name cls
114 thisname = thisClass cls
115 nextclsn :: [B.ByteString]
116 nextclsn = thisname:clsnames
118 -- TODO(bernhard): UBERHAX. ghc patch?
119 foreign import ccall safe "lookupSymbol"
120 c_lookupSymbol :: CString -> IO (Ptr a)
122 loadNativeFunction :: String -> IO (CUInt)
123 loadNativeFunction sym = do
124 _ <- loadRawObject "ffi/native.o"
125 -- TODO(bernhard): WTF
126 resolveObjs (return ())
127 ptr <- withCString sym c_lookupSymbol
129 then error $ "dyn. loading of \"" ++ sym ++ "\" failed."
130 else return $ fromIntegral $ ptrToIntPtr ptr
134 -- (entry, _) <- testCase "./tests/Fib.class" "fib"
135 -- let int_entry = ((fromIntegral $ ptrToIntPtr entry) :: Word32)
136 -- let mmap = M.insert ("fib" :: String) int_entry M.empty
137 -- mapM_ (\(x,y) -> printf "%s at 0x%08x\n" x y) $ M.toList mmap
138 -- mmap2ptr mmap >>= set_mmap
139 -- demo_mmap -- access Data.Map from C
141 initMethodPool :: IO ()
143 methodmap2ptr M.empty >>= set_methodmap
144 trapmap2ptr M.empty >>= set_trapmap
145 classmap2ptr M.empty >>= set_classmap
146 virtualmap2ptr M.empty >>= set_virtualmap
147 stringsmap2ptr M.empty >>= set_stringsmap
148 interfacesmap2ptr M.empty >>= set_interfacesmap
149 interfacemethodmap2ptr M.empty >>= set_interfacemethodmap
152 addMethodRef :: Word32 -> MethodInfo -> [B.ByteString] -> IO ()
153 addMethodRef entry (MethodInfo mmname _ msig) clsnames = do
154 mmap <- get_methodmap >>= ptr2methodmap
155 let newmap = M.fromList $ map (\x -> ((MethodInfo mmname x msig), entry)) clsnames
156 methodmap2ptr (mmap `M.union` newmap) >>= set_methodmap
159 compileBB :: MapBB -> MethodInfo -> IO Word32
160 compileBB hmap methodinfo = do
161 tmap <- get_trapmap >>= ptr2trapmap
163 cls <- getClassFile (methClassName methodinfo)
164 let ebb = emitFromBB (methName methodinfo) cls hmap
165 (_, Right right) <- runCodeGen ebb () ()
167 let ((entry, _, _, new_tmap), _) = right
168 let tmap' = M.union tmap new_tmap -- prefers elements in cmap
169 trapmap2ptr tmap' >>= set_trapmap
173 mapM_ (putStrLn . showAtt) (snd right)
175 -- UNCOMMENT NEXT LINE FOR GDB FUN
177 -- (1) start it with `gdb ./mate' and then `run <classfile>'
178 -- (2) on getLine, press ctrl+c
179 -- (3) `br *0x<addr>'; obtain the address from the disasm above
180 -- (4) `cont' and press enter
181 return $ fromIntegral $ ptrToIntPtr entry
184 executeFuncPtr :: Word32 -> IO ()
185 executeFuncPtr entry =
186 code_void $ ((castPtrToFunPtr $ intPtrToPtr $ fromIntegral entry) :: FunPtr (IO ()))