X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=Mate%2FClassPool.hs;h=ae6ce4450def203be66630d80ec23e7aa3b07aff;hb=da245b03d80644c22b011acba31acacb880d8327;hp=fd5fc8ebb328bb897e9cf3f15202ef0000701969;hpb=54a2170d22bb853afa42d87eeeffd8b633efcd36;p=mate.git diff --git a/Mate/ClassPool.hs b/Mate/ClassPool.hs index fd5fc8e..ae6ce44 100644 --- a/Mate/ClassPool.hs +++ b/Mate/ClassPool.hs @@ -1,13 +1,17 @@ +{-# LANGUAGE CPP #-} {-# LANGUAGE OverloadedStrings #-} -{-# LANGUAGE ForeignFunctionInterface #-} +#include "debug.h" module Mate.ClassPool ( getClassInfo, getClassFile, getMethodTable, - getMethodSize, + getObjectSize, getMethodOffset, getFieldOffset, - getStaticFieldAddr + getStaticFieldAddr, + getInterfaceMethodOffset, + addClassPath, + addClassPathJAR ) where import Data.Int @@ -15,177 +19,295 @@ import Data.Word import Data.Binary import qualified Data.Map as M import qualified Data.Set as S +import Data.List import qualified Data.ByteString.Lazy as B +import Data.String.Utils import Control.Monad +#ifdef DEBUG import Text.Printf +#endif +#ifdef DBG_CLASS +import JVM.Dump +#endif import Foreign.Ptr import Foreign.C.Types -import Foreign.Marshal.Alloc +import Foreign.Storable + +import Data.IORef +import System.IO.Unsafe +import System.Directory import JVM.ClassFile import JVM.Converter +import Java.ClassPath hiding (Directory) +import Java.JAR import Mate.BasicBlocks import {-# SOURCE #-} Mate.MethodPool import Mate.Types -import Mate.Utilities +import Mate.Debug +import Mate.GarbageAlloc getClassInfo :: B.ByteString -> IO ClassInfo getClassInfo path = do - class_map <- get_classmap >>= ptr2classmap + class_map <- getClassMap case M.lookup path class_map of Nothing -> loadAndInitClass path Just ci -> return ci -getClassFile :: B.ByteString -> IO (Class Resolved) +getClassFile :: B.ByteString -> IO (Class Direct) getClassFile path = do ci <- getClassInfo path - return $ clFile ci + return $ ciFile ci -getStaticFieldOffset :: B.ByteString -> B.ByteString -> IO (CUInt) +getStaticFieldOffset :: B.ByteString -> B.ByteString -> IO CUInt getStaticFieldOffset path field = do ci <- getClassInfo path - return $ fromIntegral $ (clStaticMap ci) M.! field + return $ fromIntegral $ ciStaticMap ci M.! field -getFieldOffset :: B.ByteString -> B.ByteString -> IO (Int32) +getFieldOffset :: B.ByteString -> B.ByteString -> IO Int32 getFieldOffset path field = do ci <- getClassInfo path - return $ (clFieldMap ci) M.! field + return $ ciFieldMap ci M.! field -- method + signature plz! -getMethodOffset :: B.ByteString -> B.ByteString -> IO (Word32) +getMethodOffset :: B.ByteString -> B.ByteString -> IO Word32 getMethodOffset path method = do ci <- getClassInfo path - return $ fromIntegral $ (clMethodMap ci) M.! method + -- (4+) one slot for "interface-table-ptr" + return $ (+4) $ fromIntegral $ ciMethodMap ci M.! method -getMethodTable :: B.ByteString -> IO (Word32) +getMethodTable :: B.ByteString -> IO Word32 getMethodTable path = do ci <- getClassInfo path - return $ clMethodBase ci + return $ ciMethodBase ci -getMethodSize :: B.ByteString -> IO (Word32) -getMethodSize path = do +getObjectSize :: B.ByteString -> IO Word32 +getObjectSize path = do ci <- getClassInfo path -- TODO(bernhard): correct sizes for different types... - let msize = fromIntegral $ M.size $ clMethodMap ci - return $ (1 + msize) * 4 + let fsize = fromIntegral $ M.size $ ciFieldMap ci + -- one slot for "method-table-ptr" + return $ (1 + fsize) * 4 -foreign export ccall getStaticFieldAddr :: CUInt -> Ptr () -> IO CUInt -getStaticFieldAddr :: CUInt -> Ptr () -> IO CUInt -getStaticFieldAddr from ptr_trapmap = do - trapmap <- ptr2tmap ptr_trapmap +getStaticFieldAddr :: CUInt -> IO CUInt +getStaticFieldAddr from = do + trapmap <- getTrapMap let w32_from = fromIntegral from let sfi = trapmap M.! w32_from + setTrapMap $ M.delete w32_from trapmap case sfi of - (SFI (StaticFieldInfo cls field)) -> do - getStaticFieldOffset cls field - _ -> error $ "getFieldAddr: no trapInfo. abort" - -loadClass :: B.ByteString -> IO ClassInfo -loadClass path = do - printf "loadClass: \"%s\"\n" $ toString path - let rpath = toString $ path `B.append` ".class" - cfile <- parseClassFile rpath - superclass <- case (path /= "java/lang/Object") of - True -> do - sc <- loadClass $ superClass cfile - return $ Just $ sc - False -> return $ Nothing - - (staticmap, fieldmap) <- calculateFields cfile superclass - printf "staticmap: %s @ %s\n" (show staticmap) (toString path) - printf "fieldmap: %s @ %s\n" (show fieldmap) (toString path) - (methodmap, mbase) <- calculateMethodMap cfile superclass - printf "methodmap: %s @ %s\n" (show methodmap) (toString path) - printf "mbase: 0x%08x\n" mbase - - virtual_map <- get_virtualmap >>= ptr2virtualmap - let virtual_map' = M.insert mbase path virtual_map - virtualmap2ptr virtual_map' >>= set_virtualmap - - class_map <- get_classmap >>= ptr2classmap - let new_ci = ClassInfo path cfile staticmap fieldmap methodmap mbase False - let class_map' = M.insert path new_ci class_map - classmap2ptr class_map' >>= set_classmap - return new_ci + (StaticField (StaticFieldInfo cls field)) -> getStaticFieldOffset cls field + _ -> error "getFieldAddr: no TrapCause found. abort" + +-- interface + method + signature plz! +getInterfaceMethodOffset :: B.ByteString -> B.ByteString -> B.ByteString -> IO Word32 +getInterfaceMethodOffset ifname meth sig = do + loadInterface ifname + ifmmap <- getInterfaceMethodMap + let k = ifname `B.append` meth `B.append` sig + case M.lookup k ifmmap of + Just w32 -> return $ w32 + 4 + Nothing -> error "getInterfaceMethodOffset: no offset set" + + +readClass :: B.ByteString -> IO ClassInfo +readClass path = do + class_map' <- getClassMap + case M.lookup path class_map' of + Just cm -> return cm + Nothing -> do + cfile <- readClassFile $ toString path +#ifdef DBG_CLASS + dumpClass cfile +#endif + -- load all interfaces, which are implemented by this class + sequence_ [ loadInterface i | i <- interfaces cfile ] + superclass <- if path /= "java/lang/Object" + then do + sc <- readClass $ superClass cfile + return $ Just sc + else return Nothing + + (staticmap, fieldmap) <- calculateFields cfile superclass + (methodmap, mbase) <- calculateMethodMap cfile superclass + immap <- getInterfaceMethodMap + + -- allocate interface offset table for this class + -- TODO(bernhard): we have some duplicates in immap (i.e. some + -- entries have the same offset), so we could + -- save some memory here. + iftable <- mallocClassData ((4*) $ M.size immap) + let w32_iftable = fromIntegral $ ptrToIntPtr iftable :: Word32 + -- store interface-table at offset 0 in method-table + pokeElemOff (intPtrToPtr $ fromIntegral mbase) 0 w32_iftable + printfCp "staticmap: %s @ %s\n" (show staticmap) (toString path) + printfCp "fieldmap: %s @ %s\n" (show fieldmap) (toString path) + printfCp "methodmap: %s @ %s\n" (show methodmap) (toString path) + printfCp "mbase: 0x%08x\n" mbase + printfCp "interfacemethod: %s @ %s\n" (show immap) (toString path) + printfCp "iftable: 0x%08x\n" w32_iftable + virtual_map <- getVirtualMap + setVirtualMap $ M.insert mbase path virtual_map + + class_map <- getClassMap + let new_ci = ClassInfo path cfile staticmap fieldmap methodmap mbase False + setClassMap $ M.insert path new_ci class_map + return new_ci + + +loadInterface :: B.ByteString -> IO () +loadInterface path = do + imap <- getInterfaceMap + -- interface already loaded? + case M.lookup path imap of + Just _ -> return () + Nothing -> do + printfCp "interface: loading \"%s\"\n" $ toString path + cfile <- readClassFile $ toString path + -- load "superinterfaces" first + sequence_ [ loadInterface i | i <- interfaces cfile ] + immap <- getInterfaceMethodMap + + -- load map again, because there could be new entries now + -- due to loading superinterfaces + imap' <- getInterfaceMap + let max_off = fromIntegral $ M.size immap * 4 + -- create index of methods by this interface + let mm = zipbase max_off (classMethods cfile) + + -- create for each method from *every* superinterface a entry to, + -- but just put in the same offset as it is already in the map + let (ifnames, methodnames) = unzip $ concat + [ zip (repeat ifname) (classMethods $ imap' M.! ifname) + | ifname <- interfaces cfile ] + let sm = zipWith (\x y -> (entry y, immap M.! getname x y)) ifnames methodnames + + -- merge all offset tables + setInterfaceMethodMap $ M.fromList sm `M.union` M.fromList mm `M.union` immap + setInterfaceMap $ M.insert path cfile imap' + where + zipbase base = zipWith (\x y -> (entry y, x + base)) [0,4..] + entry = getname path + getname p y = p `B.append` methodName y `B.append` encode (methodSignature y) -calculateFields :: Class Resolved -> Maybe ClassInfo -> IO (FieldMap, FieldMap) +calculateFields :: Class Direct -> Maybe ClassInfo -> IO (FieldMap, FieldMap) calculateFields cf superclass = do -- TODO(bernhard): correct sizes. int only atm - let (sfields, ifields) = span (S.member ACC_STATIC . fieldAccessFlags) (classFields cf) + let (sfields, ifields) = partition (S.member ACC_STATIC . fieldAccessFlags) (classFields cf) - staticbase <- mallocBytes ((fromIntegral $ length sfields) * 4) - let i_sb = fromIntegral $ ptrToIntPtr $ staticbase - let sm = zipbase i_sb sfields - let sc_sm = getsupermap superclass clStaticMap + let sc_sm = getsupermap superclass ciStaticMap + staticbase <- mallocClassData $ fromIntegral (length sfields) * 4 + let sm = zipbase (fromIntegral $ ptrToIntPtr staticbase) sfields -- new fields "overwrite" old ones, if they have the same name - let staticmap = (M.fromList sm) `M.union` sc_sm + let staticmap = sm `M.union` sc_sm - let sc_im = getsupermap superclass clFieldMap + let sc_im = getsupermap superclass ciFieldMap -- "+ 4" for the method table pointer - let max_off = (fromIntegral $ (M.size sc_im) * 4) + 4 + let max_off = (4+) $ fromIntegral $ M.size sc_im * 4 let im = zipbase max_off ifields -- new fields "overwrite" old ones, if they have the same name - let fieldmap = (M.fromList im) `M.union` sc_im + let fieldmap = im `M.union` sc_im return (staticmap, fieldmap) where - zipbase base = zipWith (\x y -> (fieldName y, x + base)) [0,4..] + zipbase :: Int32 -> [Field Direct] -> FieldMap + zipbase base = foldr (\(x,y) -> M.insert (fieldName y) (x + base)) M.empty . zip [0,4..] -- helper getsupermap :: Maybe ClassInfo -> (ClassInfo -> FieldMap) -> FieldMap getsupermap superclass getter = case superclass of Just x -> getter x; Nothing -> M.empty -calculateMethodMap :: Class Resolved -> Maybe ClassInfo -> IO (FieldMap, Word32) +calculateMethodMap :: Class Direct -> Maybe ClassInfo -> IO (FieldMap, Word32) calculateMethodMap cf superclass = do let methods = filter (\x -> (not . S.member ACC_STATIC . methodAccessFlags) x && ((/=) "" . methodName) x) (classMethods cf) - let sc_mm = getsupermap superclass clMethodMap - let max_off = fromIntegral $ (M.size sc_mm) * 4 + let sc_mm = getsupermap superclass ciMethodMap + let max_off = fromIntegral $ M.size sc_mm * 4 let mm = zipbase max_off methods - let methodmap = (M.fromList mm) `M.union` sc_mm + let methodmap = M.fromList mm `M.union` sc_mm - methodbase <- mallocBytes ((fromIntegral $ M.size methodmap) * 4) - return (methodmap, fromIntegral $ ptrToIntPtr $ methodbase) + -- (+1): one slot for the interface-table-ptr + methodbase <- mallocClassData (((+1) $ fromIntegral $ M.size methodmap) * 4) + return (methodmap, fromIntegral $ ptrToIntPtr methodbase) where zipbase base = zipWith (\x y -> (entry y, x + base)) [0,4..] - where entry y = (methodName y) `B.append` (encode $ methodSignature y) + where entry y = methodName y `B.append` encode (methodSignature y) loadAndInitClass :: B.ByteString -> IO ClassInfo loadAndInitClass path = do - class_map <- get_classmap >>= ptr2classmap + class_map <- getClassMap ci <- case M.lookup path class_map of - Nothing -> loadClass path + Nothing -> readClass path Just x -> return x -- first try to execute class initializer of superclass - when (path /= "java/lang/Object") ((loadAndInitClass $ superClass $ clFile ci) >> return ()) + when (path /= "java/lang/Object") (void $ loadAndInitClass $ superClass $ ciFile ci) -- execute class initializer - case lookupMethod "" (clFile ci) of + case lookupMethod "" (ciFile ci) of Just m -> do - hmap <- parseMethod (clFile ci) "" - printMapBB hmap - case hmap of - Just hmap' -> do - let mi = (MethodInfo "" path (methodSignature m)) - entry <- compileBB hmap' mi + method <- parseMethod (ciFile ci) "" $ MethodSignature [] ReturnsVoid + case method of + Just rawmethod -> do + let mi = MethodInfo "" path (methodSignature m) + entry <- compileBB rawmethod mi addMethodRef entry mi [path] - printf "executing static initializer from %s now\n" (toString path) + printfCp "executing static initializer from %s now\n" (toString path) executeFuncPtr entry - printf "static initializer from %s done\n" (toString path) - Nothing -> error $ "loadClass: static initializer not found (WTF?). abort" + printfCp "static initializer from %s done\n" (toString path) + Nothing -> error "readClass: static initializer not found (WTF?). abort" Nothing -> return () - class_map' <- get_classmap >>= ptr2classmap - let new_ci = ci { clInitDone = True } - let class_map'' = M.insert path new_ci class_map' - classmap2ptr class_map'' >>= set_classmap + class_map' <- getClassMap + let new_ci = ci { ciInitDone = True } + setClassMap $ M.insert path new_ci class_map' return new_ci + + +readClassFile :: String -> IO (Class Direct) +readClassFile path' = readIORef classPaths >>= rcf + where + path = replace "." "/" path' + rcf :: [MClassPath] -> IO (Class Direct) + rcf [] = error $ "readClassFile: Class \"" ++ show path ++ "\" not found." + rcf (Directory pre:xs) = do + let cf = pre ++ path ++ ".class" + printfCp "rcf: searching @ %s for %s\n" (show pre) (show path) + b <- doesFileExist cf + if b + then parseClassFile cf + else rcf xs + rcf (JAR p:xs) = do + printfCp "rcf: searching %s in JAR\n" (show path) + entry <- getEntry p path + case entry of + Just (LoadedJAR _ cls) -> return cls + Nothing -> rcf xs + _ -> error $ "readClassFile: Class \"" ++ show path ++ "\" in JAR not found. #1" + +data MClassPath = + Directory String | + JAR [Tree CPEntry] + +classPaths :: IORef [MClassPath] +{-# NOINLINE classPaths #-} +classPaths = unsafePerformIO $ newIORef [] + +addClassPath :: String -> IO () +addClassPath x = do + cps <- readIORef classPaths + writeIORef classPaths (Directory x:cps) + +addClassPathJAR :: String -> IO () +addClassPathJAR x = do + cps <- readIORef classPaths + t <- execClassPath $ addJAR x + writeIORef classPaths (JAR t:cps)