1 {-# LANGUAGE OverloadedStrings #-}
2 {-# LANGUAGE ForeignFunctionInterface #-}
3 module Mate.MethodPool where
6 import Data.String.Utils
7 import qualified Data.Map as M
8 import qualified Data.Set as S
9 import qualified Data.ByteString.Lazy as B
15 import Foreign.C.Types
16 import Foreign.C.String
21 import Harpy.X86Disassembler
23 import Mate.BasicBlocks
25 import Mate.X86CodeGen
30 foreign import ccall "dynamic"
31 code_void :: FunPtr (IO ()) -> (IO ())
34 foreign export ccall getMethodEntry :: CUInt -> CUInt -> IO CUInt
35 getMethodEntry :: CUInt -> CUInt -> IO CUInt
36 getMethodEntry signal_from methodtable = do
37 mmap <- get_methodmap >>= ptr2mmap
38 tmap <- get_trapmap >>= ptr2tmap
39 vmap <- get_virtualmap >>= ptr2virtualmap
41 let w32_from = fromIntegral signal_from
42 let mi = tmap M.! w32_from
43 let mi'@(MethodInfo method cm sig) =
46 (VI (MethodInfo methname _ msig)) ->
47 (MethodInfo methname (vmap M.! (fromIntegral methodtable)) msig)
48 _ -> error $ "getMethodEntry: no trapInfo. abort."
49 case M.lookup mi' mmap of
51 cls <- getClassFile cm
52 printf "getMethodEntry(from 0x%08x): no method \"%s\" found. compile it\n" w32_from (show mi')
53 mm <- lookupMethodRecursive method [] cls
55 Just (mm', clsnames, cls') -> do
56 let flags = methodAccessFlags mm'
57 case S.member ACC_NATIVE flags of
59 hmap <- parseMethod cls' method
63 entry <- compileBB hmap' (MethodInfo method (thisClass cls') sig)
64 addMethodRef entry mi' clsnames
65 return $ fromIntegral entry
66 Nothing -> error $ (show method) ++ " not found. abort"
68 let symbol = (replace "/" "_" $ toString cm) ++ "__" ++ (toString method) ++ "__" ++ (replace "(" "_" (replace ")" "_" $ toString $ encode sig))
69 printf "native-call: symbol: %s\n" symbol
70 nf <- loadNativeFunction symbol
71 let w32_nf = fromIntegral nf
72 let mmap' = M.insert mi' w32_nf mmap
73 mmap2ptr mmap' >>= set_methodmap
75 Nothing -> error $ (show method) ++ " not found. abort"
76 Just w32 -> return (fromIntegral w32)
78 lookupMethodRecursive :: B.ByteString -> [B.ByteString] -> Class Resolved
79 -> IO (Maybe ((Method Resolved, [B.ByteString], Class Resolved)))
80 lookupMethodRecursive name clsnames cls = do
82 Just x -> return $ Just (x, nextclsn, cls)
83 Nothing -> if thisname == "java/lang/Object"
86 supercl <- getClassFile (superClass cls)
87 lookupMethodRecursive name nextclsn supercl
89 res = lookupMethod name cls
90 thisname = thisClass cls
91 nextclsn :: [B.ByteString]
92 nextclsn = thisname:clsnames
94 -- TODO(bernhard): UBERHAX. ghc patch?
95 foreign import ccall safe "lookupSymbol"
96 c_lookupSymbol :: CString -> IO (Ptr a)
98 loadNativeFunction :: String -> IO (CUInt)
99 loadNativeFunction sym = do
100 _ <- loadRawObject "ffi/native.o"
101 -- TODO(bernhard): WTF
102 resolveObjs (return ())
103 ptr <- withCString sym c_lookupSymbol
105 then error $ "dyn. loading of \"" ++ sym ++ "\" failed."
106 else return $ fromIntegral $ ptrToIntPtr ptr
110 -- (entry, _) <- testCase "./tests/Fib.class" "fib"
111 -- let int_entry = ((fromIntegral $ ptrToIntPtr entry) :: Word32)
112 -- let mmap = M.insert ("fib" :: String) int_entry M.empty
113 -- mapM_ (\(x,y) -> printf "%s at 0x%08x\n" x y) $ M.toList mmap
114 -- mmap2ptr mmap >>= set_mmap
115 -- demo_mmap -- access Data.Map from C
117 initMethodPool :: IO ()
119 mmap2ptr M.empty >>= set_methodmap
120 tmap2ptr M.empty >>= set_trapmap
121 classmap2ptr M.empty >>= set_classmap
122 virtualmap2ptr M.empty >>= set_virtualmap
125 addMethodRef :: Word32 -> MethodInfo -> [B.ByteString] -> IO ()
126 addMethodRef entry (MethodInfo mmname _ msig) clsnames = do
127 mmap <- get_methodmap >>= ptr2mmap
128 let newmap = M.fromList $ map (\x -> ((MethodInfo mmname x msig), entry)) clsnames
129 mmap2ptr (mmap `M.union` newmap) >>= set_methodmap
132 compileBB :: MapBB -> MethodInfo -> IO Word32
133 compileBB hmap methodinfo = do
134 tmap <- get_trapmap >>= ptr2tmap
136 cls <- getClassFile (cName methodinfo)
137 let ebb = emitFromBB (methName methodinfo) cls hmap
138 (_, Right ((entry, _, _, new_tmap), disasm)) <- runCodeGen ebb () ()
140 let tmap' = M.union tmap new_tmap -- prefers elements in cmap
141 tmap2ptr tmap' >>= set_trapmap
144 mapM_ (putStrLn . showAtt) disasm
145 -- UNCOMMENT NEXT LINE FOR GDB FUN
147 -- (1) start it with `gdb ./mate' and then `run <classfile>'
148 -- (2) on getLine, press ctrl+c
149 -- (3) `br *0x<addr>'; obtain the address from the disasm above
150 -- (4) `cont' and press enter
151 return $ fromIntegral $ ptrToIntPtr entry
154 executeFuncPtr :: Word32 -> IO ()
155 executeFuncPtr entry =
156 code_void $ ((castPtrToFunPtr $ intPtrToPtr $ fromIntegral entry) :: FunPtr (IO ()))