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
37 foreign import ccall "dynamic"
38 code_void :: FunPtr (IO ()) -> IO ()
40 foreign import ccall "&demoInterfaceCall"
41 demoInterfaceCallAddr :: FunPtr (CUInt -> IO ())
43 foreign import ccall "&printMemoryUsage"
44 printMemoryUsageAddr :: FunPtr (IO ())
46 foreign import ccall "&loadLibrary"
47 loadLibraryAddr :: FunPtr (IO ())
49 getMethodEntry :: CPtrdiff -> CPtrdiff -> IO CPtrdiff
50 getMethodEntry signal_from methodtable = do
55 let w32_from = fromIntegral signal_from
56 let mi = tmap M.! w32_from
57 let mi'@(MethodInfo method cm sig) =
60 (VirtualCall _ (MethodInfo methname _ msig) _) -> newMi methname msig
61 _ -> error "getMethodEntry: no TrapCause found. abort."
62 where newMi mn = MethodInfo mn (vmap M.! fromIntegral methodtable)
63 -- bernhard (TODO): doesn't work with gnu classpath at some point. didn't
64 -- figured out the problem yet :/ therefore, I have no
65 -- testcase for replaying the situation.
66 -- setTrapMap $ M.delete w32_from tmap
67 entryaddr <- case M.lookup mi' mmap of
69 cls <- getClassFile cm
70 printfMp "getMethodEntry(from 0x%08x): no method \"%s\" found. compile it\n" w32_from (show mi')
71 mm <- lookupMethodRecursive method sig [] cls
73 Just (mm', clsnames, cls') -> do
74 let flags = methodAccessFlags mm'
75 if S.member ACC_NATIVE flags
77 let scm = toString cm; smethod = toString method
78 if scm == "jmate/lang/MateRuntime" then do
81 return . funPtrToAddr $ loadLibraryAddr
82 "demoInterfaceCall" ->
83 return . funPtrToAddr $ demoInterfaceCallAddr
85 return . funPtrToAddr $ printMemoryUsageAddr
87 error $ "native-call: " ++ smethod ++ " not found."
89 -- TODO(bernhard): cleaner please... *do'h*
90 let sym1 = replace "/" "_" scm
91 parenth = replace "(" "_" $ replace ")" "_" $ toString $ encode sig
92 sym2 = replace ";" "_" $ replace "/" "_" parenth
93 symbol = sym1 ++ "__" ++ smethod ++ "__" ++ sym2
94 printfMp "native-call: symbol: %s\n" symbol
95 nf <- loadNativeFunction symbol
96 setMethodMap $ M.insert mi' nf mmap
99 rawmethod <- parseMethod cls' method sig
100 entry <- compileBB rawmethod (MethodInfo method (thisClass cls') sig)
101 addMethodRef entry mi' clsnames
102 return $ fromIntegral entry
103 Nothing -> error $ show method ++ " not found. abort"
104 Just w32 -> return w32
105 return $ fromIntegral entryaddr
107 funPtrToAddr :: Num b => FunPtr a -> b
108 funPtrToAddr = fromIntegral . ptrToIntPtr . castFunPtrToPtr
110 lookupMethodRecursive :: B.ByteString -> MethodSignature -> [B.ByteString] -> Class Direct
111 -> IO (Maybe (Method Direct, [B.ByteString], Class Direct))
112 lookupMethodRecursive name sig clsnames cls =
114 Just x -> return $ Just (x, nextclsn, cls)
115 Nothing -> if thisname == "java/lang/Object"
118 supercl <- getClassFile (superClass cls)
119 lookupMethodRecursive name sig nextclsn supercl
121 res = lookupMethodSig name sig cls
122 thisname = thisClass cls
123 nextclsn :: [B.ByteString]
124 nextclsn = thisname:clsnames
126 -- TODO(bernhard): UBERHAX. ghc patch?
127 foreign import ccall safe "lookupSymbol"
128 c_lookupSymbol :: CString -> IO (Ptr a)
130 loadNativeFunction :: String -> IO NativeWord
131 loadNativeFunction sym = do
132 _ <- loadRawObject "ffi/native.o"
133 -- TODO(bernhard): WTF
134 resolveObjs (return ())
135 ptr <- withCString sym c_lookupSymbol
137 then error $ "dyn. loading of \"" ++ sym ++ "\" failed."
138 else return $ fromIntegral $ ptrToIntPtr ptr
142 -- (entry, _) <- testCase "./tests/Fib.class" "fib"
143 -- let int_entry = ((fromIntegral $ ptrToIntPtr entry) :: NativeWord)
144 -- let mmap = M.insert ("fib" :: String) int_entry M.empty
145 -- mapM_ (\(x,y) -> printf "%s at 0x%08x\n" x y) $ M.toList mmap
146 -- mmap2ptr mmap >>= set_mmap
147 -- demo_mmap -- access Data.Map from C
149 addMethodRef :: NativeWord -> MethodInfo -> [B.ByteString] -> IO ()
150 addMethodRef entry (MethodInfo mmname _ msig) clsnames = do
152 let newmap = foldr (\i -> M.insert (MethodInfo mmname i msig) entry) M.empty clsnames
153 setMethodMap $ mmap `M.union` newmap
156 compileBB :: RawMethod -> MethodInfo -> IO NativeWord
157 compileBB rawmethod methodinfo = do
160 cls <- getClassFile (methClassName methodinfo)
161 let ebb = emitFromBB cls rawmethod
162 let cgconfig = defaultCodeGenConfig { codeBufferSize = fromIntegral $ (rawCodeLength rawmethod) * 32 }
163 (_, Right right) <- runCodeGenWithConfig ebb () () cgconfig
165 let ((entry, _, _, new_tmap), _) = right
166 setTrapMap $ tmap `M.union` new_tmap -- prefers elements in tmap
168 printfJit "generated code of \"%s\" from \"%s\":\n" (toString $ methName methodinfo) (toString $ methClassName methodinfo)
169 printfJit "\tstacksize: 0x%04x, locals: 0x%04x\n" (rawStackSize rawmethod) (rawLocals rawmethod)
171 mapM_ (printfJit "%s\n" . showAtt) (snd right)
174 -- UNCOMMENT NEXT LINES FOR GDB FUN
175 -- if (toString $ methName methodinfo) == "thejavamethodIwant2debug"
176 -- then putStrLn "press CTRL+C now for setting a breakpoint. then `c' and ENTER for continue" >> getLine
178 -- (1) build a debug build (see HACKING) and execute `make tests/Fib.gdb'
179 -- for example, where the suffix is important
180 -- (2) on getLine, press CTRL+C
181 -- (3) `br *0x<addr>'; obtain the address from the disasm above
182 -- (4) `cont' and press enter
183 return $ fromIntegral $ ptrToIntPtr entry
186 executeFuncPtr :: NativeWord -> IO ()
187 executeFuncPtr entry =
188 code_void ((castPtrToFunPtr $ intPtrToPtr $ fromIntegral entry) :: FunPtr (IO ()))