{-# LANGUAGE CPP #-}
{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE ForeignFunctionInterface #-}
#include "debug.h"
module Mate.ClassPool (
getClassInfo,
+ classLoaded,
getClassFile,
getMethodTable,
getObjectSize,
) where
import Data.Int
-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
import Mate.Types
import Mate.Debug
import Mate.GarbageAlloc
+import Mate.NativeSizes
getClassInfo :: B.ByteString -> IO ClassInfo
getClassInfo path = do
Nothing -> loadAndInitClass path
Just ci -> return ci
+classLoaded :: B.ByteString -> IO Bool
+classLoaded path = do
+ class_map <- getClassMap
+ return $ M.member path class_map
+
getClassFile :: B.ByteString -> IO (Class Direct)
getClassFile path = do
ci <- getClassInfo path
return $ ciFile ci
-getStaticFieldOffset :: B.ByteString -> B.ByteString -> IO CUInt
+getStaticFieldOffset :: B.ByteString -> B.ByteString -> IO CPtrdiff
getStaticFieldOffset path field = do
ci <- getClassInfo path
return $ fromIntegral $ ciStaticMap ci M.! field
return $ ciFieldMap ci M.! field
-- method + signature plz!
-getMethodOffset :: B.ByteString -> B.ByteString -> IO Word32
+getMethodOffset :: B.ByteString -> B.ByteString -> IO NativeWord
getMethodOffset path method = do
ci <- getClassInfo path
- -- (4+) one slot for "interface-table-ptr"
- return $ (+4) $ fromIntegral $ ciMethodMap ci M.! method
+ -- (+ ptrSize) one slot for "interface-table-ptr"
+ return $ (+ ptrSize) $ fromIntegral $ ciMethodMap ci M.! method
-getMethodTable :: B.ByteString -> IO Word32
+getMethodTable :: B.ByteString -> IO NativeWord
getMethodTable path = do
ci <- getClassInfo path
return $ ciMethodBase ci
-getObjectSize :: B.ByteString -> IO Word32
+getObjectSize :: B.ByteString -> IO NativeWord
getObjectSize path = do
ci <- getClassInfo path
-- TODO(bernhard): correct sizes for different types...
let fsize = fromIntegral $ M.size $ ciFieldMap ci
-- one slot for "method-table-ptr"
- return $ (1 + fsize) * 4
+ return $ (1 + fsize) * ptrSize
-getStaticFieldAddr :: CUInt -> IO CUInt
+getStaticFieldAddr :: CPtrdiff -> IO CPtrdiff
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)) -> 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
+getInterfaceMethodOffset :: B.ByteString -> B.ByteString -> B.ByteString -> IO NativeWord
getInterfaceMethodOffset ifname meth sig = do
loadInterface ifname
ifmmap <- getInterfaceMethodMap
-- 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
+ let wn_iftable = fromIntegral $ ptrToIntPtr iftable :: NativeWord
-- 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
+ pokeElemOff (intPtrToPtr $ fromIntegral mbase) 0 wn_iftable
+#ifdef DBG_CLASS
+ let strpath = toString path
+ hexDumpMap ("staticmap @ " ++ strpath) staticmap
+ hexDumpMap ("fieldmap @ " ++ strpath) fieldmap
+ hexDumpMap ("methodmap @ " ++ strpath) methodmap
+ hexDumpMap ("interfacemap @ " ++ strpath) immap
+#endif
+ printfCp "mbase: 0x%08x\n" mbase
+ printfCp "iftable: 0x%08x\n" wn_iftable
virtual_map <- getVirtualMap
setVirtualMap $ M.insert mbase path virtual_map
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)
+ 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 Direct -> Maybe ClassInfo -> IO (FieldMap, FieldMap)
calculateFields cf superclass = do
-- TODO(bernhard): correct sizes. int only atm
- -- 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
+ let (sfields, ifields) = partition (S.member ACC_STATIC . fieldAccessFlags) (classFields cf)
- staticbase <- mallocClassData $ fromIntegral (length sfields) * 4
- let i_sb = fromIntegral $ ptrToIntPtr staticbase
- let sm = zipbase i_sb sfields
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 ciFieldMap
-- "+ 4" for the method table pointer
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 Direct -> Maybe ClassInfo -> IO (FieldMap, Word32)
+calculateMethodMap :: Class Direct -> Maybe ClassInfo -> IO (FieldMap, NativeWord)
calculateMethodMap cf superclass = do
let methods = filter
(\x -> (not . S.member ACC_STATIC . methodAccessFlags) x &&
-- execute class initializer
case lookupMethod "<clinit>" (ciFile ci) of
Just m -> do
- hmap <- parseMethod (ciFile ci) "<clinit>"
- case hmap of
- Just hmap' -> do
- let mi = MethodInfo "<clinit>" path (methodSignature m)
- entry <- compileBB hmap' mi
- addMethodRef entry mi [path]
- printfCp "executing static initializer from %s now\n" (toString path)
- executeFuncPtr entry
- printfCp "static initializer from %s done\n" (toString path)
- Nothing -> error "readClass: static initializer not found (WTF?). abort"
+ rawmethod <- parseMethod (ciFile ci) "<clinit>" $ MethodSignature [] ReturnsVoid
+ let mi = MethodInfo "<clinit>" path (methodSignature m)
+ entry <- compileBB rawmethod mi
+ addMethodRef entry mi [path]
+ printfCp "executing static initializer from %s now\n" (toString path)
+ executeFuncPtr entry
+ printfCp "static initializer from %s done\n" (toString path)
Nothing -> return ()
class_map' <- getClassMap
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"
+ 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 |
projects / mate.git / blobdiff