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
22 import Harpy.X86Disassembler
29 import Mate.BasicBlocks
31 import Mate.NativeMachine
36 foreign import ccall "dynamic"
37 code_void :: FunPtr (IO ()) -> IO ()
40 getMethodEntry :: CPtrdiff -> CPtrdiff -> IO CPtrdiff
41 getMethodEntry signal_from methodtable = do
46 let w32_from = fromIntegral signal_from
47 let mi = tmap M.! w32_from
48 let mi'@(MethodInfo method cm sig) =
51 (VirtualMethod _ (MethodInfo methname _ msig)) -> newMi methname msig
52 (InterfaceMethod _ (MethodInfo methname _ msig)) -> newMi methname msig
53 _ -> error "getMethodEntry: no TrapCause found. abort."
54 where newMi mn = MethodInfo mn (vmap M.! fromIntegral methodtable)
55 -- bernhard (TODO): doesn't work with gnu classpath at some point. didn't
56 -- figured out the problem yet :/ therefore, I have no
57 -- testcase for replaying the situation.
58 -- setTrapMap $ M.delete w32_from tmap
59 entryaddr <- case M.lookup mi' mmap of
61 cls <- getClassFile cm
62 printfMp "getMethodEntry(from 0x%08x): no method \"%s\" found. compile it\n" w32_from (show mi')
63 mm <- lookupMethodRecursive method sig [] cls
65 Just (mm', clsnames, cls') -> do
66 let flags = methodAccessFlags mm'
67 if S.member ACC_NATIVE flags
69 -- TODO(bernhard): cleaner please... *do'h*
70 let sym1 = replace "/" "_" $ toString cm
71 parenth = replace "(" "_" $ replace ")" "_" $ toString $ encode sig
72 sym2 = replace ";" "_" $ replace "/" "_" parenth
73 symbol = sym1 ++ "__" ++ toString method ++ "__" ++ sym2
74 printfMp "native-call: symbol: %s\n" symbol
75 nf <- loadNativeFunction symbol
76 setMethodMap $ M.insert mi' nf mmap
79 rawmethod <- parseMethod cls' method sig
80 entry <- compileBB rawmethod (MethodInfo method (thisClass cls') sig)
81 addMethodRef entry mi' clsnames
82 return $ fromIntegral entry
83 Nothing -> error $ show method ++ " not found. abort"
84 Just w32 -> return w32
85 return $ fromIntegral entryaddr
87 lookupMethodRecursive :: B.ByteString -> MethodSignature -> [B.ByteString] -> Class Direct
88 -> IO (Maybe (Method Direct, [B.ByteString], Class Direct))
89 lookupMethodRecursive name sig clsnames cls =
91 Just x -> return $ Just (x, nextclsn, cls)
92 Nothing -> if thisname == "java/lang/Object"
95 supercl <- getClassFile (superClass cls)
96 lookupMethodRecursive name sig nextclsn supercl
98 res = lookupMethodSig name sig cls
99 thisname = thisClass cls
100 nextclsn :: [B.ByteString]
101 nextclsn = thisname:clsnames
103 -- TODO(bernhard): UBERHAX. ghc patch?
104 foreign import ccall safe "lookupSymbol"
105 c_lookupSymbol :: CString -> IO (Ptr a)
107 loadNativeFunction :: String -> IO NativeWord
108 loadNativeFunction sym = do
109 _ <- loadRawObject "ffi/native.o"
110 -- TODO(bernhard): WTF
111 resolveObjs (return ())
112 ptr <- withCString sym c_lookupSymbol
114 then error $ "dyn. loading of \"" ++ sym ++ "\" failed."
115 else return $ fromIntegral $ ptrToIntPtr ptr
119 -- (entry, _) <- testCase "./tests/Fib.class" "fib"
120 -- let int_entry = ((fromIntegral $ ptrToIntPtr entry) :: NativeWord)
121 -- let mmap = M.insert ("fib" :: String) int_entry M.empty
122 -- mapM_ (\(x,y) -> printf "%s at 0x%08x\n" x y) $ M.toList mmap
123 -- mmap2ptr mmap >>= set_mmap
124 -- demo_mmap -- access Data.Map from C
126 addMethodRef :: NativeWord -> MethodInfo -> [B.ByteString] -> IO ()
127 addMethodRef entry (MethodInfo mmname _ msig) clsnames = do
129 let newmap = foldr (\i -> M.insert (MethodInfo mmname i msig) entry) M.empty clsnames
130 setMethodMap $ mmap `M.union` newmap
133 compileBB :: RawMethod -> MethodInfo -> IO NativeWord
134 compileBB rawmethod methodinfo = do
137 cls <- getClassFile (methClassName methodinfo)
138 let ebb = emitFromBB cls rawmethod
139 (_, Right right) <- runCodeGen ebb () ()
141 let ((entry, _, _, new_tmap), _) = right
142 setTrapMap $ tmap `M.union` new_tmap -- prefers elements in tmap
144 printfJit "generated code of \"%s\" from \"%s\":\n" (toString $ methName methodinfo) (toString $ methClassName methodinfo)
145 printfJit "\tstacksize: 0x%04x, locals: 0x%04x\n" (rawStackSize rawmethod) (rawLocals rawmethod)
147 mapM_ (printfJit "%s\n" . showAtt) (snd right)
150 -- UNCOMMENT NEXT LINES FOR GDB FUN
151 -- if (toString $ methName methodinfo) == "thejavamethodIwant2debug"
152 -- then putStrLn "press CTRL+C now for setting a breakpoint. then `c' and ENTER for continue" >> getLine
154 -- (1) build a debug build (see HACKING) and execute `make tests/Fib.gdb'
155 -- for example, where the suffix is important
156 -- (2) on getLine, press CTRL+C
157 -- (3) `br *0x<addr>'; obtain the address from the disasm above
158 -- (4) `cont' and press enter
159 return $ fromIntegral $ ptrToIntPtr entry
162 executeFuncPtr :: NativeWord -> IO ()
163 executeFuncPtr entry =
164 code_void ((castPtrToFunPtr $ intPtrToPtr $ fromIntegral entry) :: FunPtr (IO ()))