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 -> Ptr () -> Ptr () -> IO CUInt
35 getMethodEntry :: CUInt -> Ptr () -> Ptr () -> IO CUInt
36 getMethodEntry signal_from ptr_mmap ptr_tmap = do
37 mmap <- ptr2mmap ptr_mmap
38 tmap <- ptr2tmap ptr_tmap
40 let w32_from = fromIntegral signal_from
41 let mi = tmap M.! w32_from
43 (MI mi'@(MethodInfo method cm sig)) -> do
44 case M.lookup mi' mmap of
46 cls <- getClassFile cm
47 printf "getMethodEntry(from 0x%08x): no method \"%s\" found. compile it\n" w32_from (show mi')
48 mm <- lookupMethodRecursive method [] cls
50 Just (mm', clsnames, cls') -> do
51 let flags = methodAccessFlags mm'
52 case S.member ACC_NATIVE flags of
54 hmap <- parseMethod cls' method
58 entry <- compileBB hmap' (MethodInfo method (thisClass cls') sig)
59 addMethodRef entry mi' clsnames
60 return $ fromIntegral entry
61 Nothing -> error $ (show method) ++ " not found. abort"
63 let symbol = (replace "/" "_" $ toString cm) ++ "__" ++ (toString method) ++ "__" ++ (replace "(" "_" (replace ")" "_" $ toString $ encode sig))
64 printf "native-call: symbol: %s\n" symbol
65 nf <- loadNativeFunction symbol
66 let w32_nf = fromIntegral nf
67 let mmap' = M.insert mi' w32_nf mmap
68 mmap2ptr mmap' >>= set_methodmap
70 Nothing -> error $ (show method) ++ " not found. abort"
71 Just w32 -> return (fromIntegral w32)
72 _ -> error $ "getMethodEntry: no trapInfo. abort"
74 lookupMethodRecursive :: B.ByteString -> [B.ByteString] -> Class Resolved
75 -> IO (Maybe ((Method Resolved, [B.ByteString], Class Resolved)))
76 lookupMethodRecursive name clsnames cls = do
78 Just x -> return $ Just (x, nextclsn, cls)
79 Nothing -> if thisname == "java/lang/Object"
82 supercl <- getClassFile (superClass cls)
83 lookupMethodRecursive name nextclsn supercl
85 res = lookupMethod name cls
86 thisname = thisClass cls
87 nextclsn :: [B.ByteString]
88 nextclsn = thisname:clsnames
90 -- TODO(bernhard): UBERHAX. ghc patch?
91 foreign import ccall safe "lookupSymbol"
92 c_lookupSymbol :: CString -> IO (Ptr a)
94 loadNativeFunction :: String -> IO (CUInt)
95 loadNativeFunction sym = do
96 _ <- loadRawObject "ffi/native.o"
97 -- TODO(bernhard): WTF
98 resolveObjs (return ())
99 ptr <- withCString sym c_lookupSymbol
101 then error $ "dyn. loading of \"" ++ sym ++ "\" failed."
102 else return $ fromIntegral $ ptrToIntPtr ptr
106 -- (entry, _) <- testCase "./tests/Fib.class" "fib"
107 -- let int_entry = ((fromIntegral $ ptrToIntPtr entry) :: Word32)
108 -- let mmap = M.insert ("fib" :: String) int_entry M.empty
109 -- mapM_ (\(x,y) -> printf "%s at 0x%08x\n" x y) $ M.toList mmap
110 -- mmap2ptr mmap >>= set_mmap
111 -- demo_mmap -- access Data.Map from C
113 initMethodPool :: IO ()
115 mmap2ptr M.empty >>= set_methodmap
116 tmap2ptr M.empty >>= set_trapmap
117 classmap2ptr M.empty >>= set_classmap
120 addMethodRef :: Word32 -> MethodInfo -> [B.ByteString] -> IO ()
121 addMethodRef entry (MethodInfo mmname _ msig) clsnames = do
122 mmap <- get_methodmap >>= ptr2mmap
123 let newmap = M.fromList $ map (\x -> ((MethodInfo mmname x msig), entry)) clsnames
124 mmap2ptr (mmap `M.union` newmap) >>= set_methodmap
127 compileBB :: MapBB -> MethodInfo -> IO Word32
128 compileBB hmap methodinfo = do
129 tmap <- get_trapmap >>= ptr2tmap
131 cls <- getClassFile (cName methodinfo)
132 let ebb = emitFromBB (methName methodinfo) cls hmap
133 (_, Right ((entry, _, _, new_tmap), disasm)) <- runCodeGen ebb () ()
135 let tmap' = M.union tmap new_tmap -- prefers elements in cmap
136 tmap2ptr tmap' >>= set_trapmap
139 mapM_ (putStrLn . showAtt) disasm
140 -- UNCOMMENT NEXT LINE FOR GDB FUN
142 -- (1) start it with `gdb ./mate' and then `run <classfile>'
143 -- (2) on getLine, press ctrl+c
144 -- (3) `br *0x<addr>'; obtain the address from the disasm above
145 -- (4) `cont' and press enter
146 return $ fromIntegral $ ptrToIntPtr entry
149 executeFuncPtr :: Word32 -> IO ()
150 executeFuncPtr entry =
151 code_void $ ((castPtrToFunPtr $ intPtrToPtr $ fromIntegral entry) :: FunPtr (IO ()))