2 {-# LANGUAGE OverloadedStrings #-}
3 {-# LANGUAGE ForeignFunctionInterface #-}
5 module Mate.MethodPool where
8 import Data.String.Utils
9 import qualified Data.Map as M
10 import qualified Data.Set as S
11 import qualified Data.ByteString.Lazy as B
15 import Foreign.C.Types
16 import Foreign.C.String
21 import Harpy.X86Disassembler
27 import Mate.BasicBlocks
29 import Mate.X86CodeGen
34 foreign import ccall "dynamic"
35 code_void :: FunPtr (IO ()) -> IO ()
38 getMethodEntry :: CUInt -> CUInt -> IO CUInt
39 getMethodEntry signal_from methodtable = do
44 let w32_from = fromIntegral signal_from
45 let mi = tmap M.! w32_from
46 let mi'@(MethodInfo method cm sig) =
49 (VirtualMethod _ (MethodInfo methname _ msig)) -> newMi methname msig
50 (InterfaceMethod _ (MethodInfo methname _ msig)) -> newMi methname msig
51 _ -> error "getMethodEntry: no TrapCause found. abort."
52 where newMi mn = MethodInfo mn (vmap M.! fromIntegral methodtable)
53 -- bernhard (TODO): doesn't work with gnu classpath at some point. didn't
54 -- figured out the problem yet :/ therefore, I have no
55 -- testcase for replaying the situation.
56 -- setTrapMap $ M.delete w32_from tmap
57 case M.lookup mi' mmap of
59 cls <- getClassFile cm
60 printfMp "getMethodEntry(from 0x%08x): no method \"%s\" found. compile it\n" w32_from (show mi')
61 mm <- lookupMethodRecursive method sig [] cls
63 Just (mm', clsnames, cls') -> do
64 let flags = methodAccessFlags mm'
65 if S.member ACC_NATIVE flags
67 -- TODO(bernhard): cleaner please... *do'h*
68 let sym1 = replace "/" "_" $ toString cm
69 parenth = replace "(" "_" $ replace ")" "_" $ toString $ encode sig
70 sym2 = replace ";" "_" $ replace "/" "_" parenth
71 symbol = sym1 ++ "__" ++ toString method ++ "__" ++ sym2
72 printfMp "native-call: symbol: %s\n" symbol
73 nf <- loadNativeFunction symbol
74 let w32_nf = fromIntegral nf
75 setMethodMap $ M.insert mi' w32_nf mmap
78 hmap <- parseMethod cls' method sig
81 entry <- compileBB hmap' (MethodInfo method (thisClass cls') sig)
82 addMethodRef entry mi' clsnames
83 return $ fromIntegral entry
84 Nothing -> error $ show method ++ " not found. abort"
85 Nothing -> error $ show method ++ " not found. abort"
86 Just w32 -> return (fromIntegral w32)
88 lookupMethodRecursive :: B.ByteString -> MethodSignature -> [B.ByteString] -> Class Direct
89 -> IO (Maybe (Method Direct, [B.ByteString], Class Direct))
90 lookupMethodRecursive name sig clsnames cls =
92 Just x -> return $ Just (x, nextclsn, cls)
93 Nothing -> if thisname == "java/lang/Object"
96 supercl <- getClassFile (superClass cls)
97 lookupMethodRecursive name sig nextclsn supercl
99 res = lookupMethodSig name sig cls
100 thisname = thisClass cls
101 nextclsn :: [B.ByteString]
102 nextclsn = thisname:clsnames
104 -- TODO(bernhard): UBERHAX. ghc patch?
105 foreign import ccall safe "lookupSymbol"
106 c_lookupSymbol :: CString -> IO (Ptr a)
108 loadNativeFunction :: String -> IO CUInt
109 loadNativeFunction sym = do
110 _ <- loadRawObject "ffi/native.o"
111 -- TODO(bernhard): WTF
112 resolveObjs (return ())
113 ptr <- withCString sym c_lookupSymbol
115 then error $ "dyn. loading of \"" ++ sym ++ "\" failed."
116 else return $ fromIntegral $ ptrToIntPtr ptr
120 -- (entry, _) <- testCase "./tests/Fib.class" "fib"
121 -- let int_entry = ((fromIntegral $ ptrToIntPtr entry) :: Word32)
122 -- let mmap = M.insert ("fib" :: String) int_entry M.empty
123 -- mapM_ (\(x,y) -> printf "%s at 0x%08x\n" x y) $ M.toList mmap
124 -- mmap2ptr mmap >>= set_mmap
125 -- demo_mmap -- access Data.Map from C
127 addMethodRef :: Word32 -> MethodInfo -> [B.ByteString] -> IO ()
128 addMethodRef entry (MethodInfo mmname _ msig) clsnames = do
130 let newmap = M.fromList $ map (\x -> (MethodInfo mmname x msig, entry)) clsnames
131 setMethodMap $ mmap `M.union` newmap
134 compileBB :: MapBB -> MethodInfo -> IO Word32
135 compileBB hmap methodinfo = do
138 cls <- getClassFile (methClassName methodinfo)
139 let ebb = emitFromBB (methName methodinfo) (methSignature methodinfo) cls hmap
140 (_, Right right) <- runCodeGen ebb () ()
142 let ((entry, _, _, new_tmap), _) = right
143 setTrapMap $ tmap `M.union` new_tmap -- prefers elements in tmap
145 printfJit "generated code of \"%s\" from \"%s\":\n" (toString $ methName methodinfo) (toString $ methClassName methodinfo)
146 mapM_ (printfJit "%s\n" . showAtt) (snd right)
148 -- UNCOMMENT NEXT LINES FOR GDB FUN
149 --if (toString $ methName methodinfo) == "thejavamethodIwant2debug"
152 -- (1) start it with `gdb ./mate' and then `run <classfile>'
153 -- (2) on getLine, press ctrl+c
154 -- (3) `br *0x<addr>'; obtain the address from the disasm above
155 -- (4) `cont' and press enter
156 return $ fromIntegral $ ptrToIntPtr entry
159 executeFuncPtr :: Word32 -> IO ()
160 executeFuncPtr entry =
161 code_void ((castPtrToFunPtr $ intPtrToPtr $ fromIntegral entry) :: FunPtr (IO ()))