{-# LANGUAGE CPP #-}
{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE ForeignFunctionInterface #-}
#include "debug.h"
module Mate.ClassPool (
getClassInfo,
import qualified Data.Map as M
import qualified Data.Set as S
import qualified Data.ByteString.Lazy as B
+import Data.String.Utils
import Control.Monad
#ifdef DEBUG
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)) -> getStaticFieldOffset cls field
- _ -> error "getFieldAddr: no trapInfo. abort"
+ (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
readClass :: B.ByteString -> IO ClassInfo
readClass path = do
- cfile <- readClassFile $ toString path
+ 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
+ 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
+ -- 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
- 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
+ -- 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 ()
calculateFields cf superclass = do
-- TODO(bernhard): correct sizes. int only atm
- let (sfields, ifields) = span (S.member ACC_STATIC . fieldAccessFlags) (classFields cf)
+ -- TODO(bernhard): nicer replacement for `myspan'
+ let (sfields, ifields) = myspan (S.member ACC_STATIC . fieldAccessFlags) (classFields cf)
+ myspan :: (a -> Bool) -> [a] -> ([a], [a])
+ myspan _ [] = ([],[])
+ myspan p (x:xs)
+ | p x = (x:ns, ni)
+ | otherwise = (ns, x:ni)
+ where (ns,ni) = myspan p xs
staticbase <- mallocClassData $ fromIntegral (length sfields) * 4
let i_sb = fromIntegral $ ptrToIntPtr staticbase
-- execute class initializer
case lookupMethod "<clinit>" (ciFile ci) of
Just m -> do
- hmap <- parseMethod (ciFile ci) "<clinit>"
+ hmap <- parseMethod (ciFile ci) "<clinit>" $ MethodSignature [] ReturnsVoid
case hmap of
Just hmap' -> do
let mi = MethodInfo "<clinit>" path (methodSignature m)
readClassFile :: String -> IO (Class Direct)
-readClassFile path = readIORef classPaths >>= rcf
+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
+ 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
+ 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
projects / mate.git / blobdiff