{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE ForeignFunctionInterface #-}
+{-# LANGUAGE CPP #-}
module Mate.Types where
-import Data.Char
import Data.Word
import Data.Int
import qualified Data.Map as M
import qualified Data.ByteString.Lazy as B
-import Codec.Binary.UTF8.String hiding (encode,decode)
-import Foreign.Ptr
-import Foreign.StablePtr
+import Data.IORef
+import System.IO.Unsafe
import JVM.ClassFile
import JVM.Assembler
type BlockID = Int
-- Represents a CFG node
data BasicBlock = BasicBlock {
- code :: [Instruction],
- successor :: BBEnd }
+ code :: [Instruction],
+ successor :: BBEnd }
-- describes (leaving) edges of a CFG node
data BBEnd = Return | FallThrough BlockID | OneTarget BlockID | TwoTarget BlockID BlockID deriving Show
type MapBB = M.Map BlockID BasicBlock
+data RawMethod = RawMethod {
+ rawMapBB :: MapBB,
+ rawLocals :: Int,
+ rawStackSize :: Int }
+
-- Word32 = point of method call in generated code
-- MethodInfo = relevant information about callee
-type TMap = M.Map Word32 TrapInfo
+type TrapMap = M.Map Word32 TrapCause
-data TrapInfo = MI MethodInfo | SFI StaticFieldInfo
+data TrapCause =
+ StaticMethod MethodInfo | -- for static calls
+ VirtualMethod Bool MethodInfo | -- for virtual calls
+ InterfaceMethod Bool MethodInfo | -- for interface calls
+ StaticField StaticFieldInfo deriving Show
data StaticFieldInfo = StaticFieldInfo {
sfiClassName :: B.ByteString,
- sfiFieldName :: B.ByteString }
+ sfiFieldName :: B.ByteString } deriving Show
+
+
-- B.ByteString = name of method
-- Word32 = entrypoint of method
-type MMap = M.Map MethodInfo Word32
+type MethodMap = M.Map MethodInfo Word32
+
+data MethodInfo = MethodInfo {
+ methName :: B.ByteString,
+ methClassName :: B.ByteString,
+ methSignature :: MethodSignature
+ } deriving (Eq, Ord)
+instance Show MethodInfo where
+ show (MethodInfo method c sig) =
+ toString c ++ "." ++ toString method ++ "." ++ show sig
+
+
+
+-- store information of loaded classes
type ClassMap = M.Map B.ByteString ClassInfo
+data ClassInfo = ClassInfo {
+ ciName :: B.ByteString,
+ ciFile :: Class Direct,
+ ciStaticMap :: FieldMap,
+ ciFieldMap :: FieldMap,
+ ciMethodMap :: FieldMap,
+ ciMethodBase :: Word32,
+ ciInitDone :: Bool }
+
+
+-- store field offsets in a map
type FieldMap = M.Map B.ByteString Int32
-data ClassInfo = ClassInfo {
- clName :: B.ByteString,
- clFile :: Class Resolved,
- clFieldBase :: Ptr Int32,
- clFieldMap :: FieldMap }
-data MethodInfo = MethodInfo {
- methName :: B.ByteString,
- cName :: B.ByteString,
- mSignature :: MethodSignature}
-
-instance Eq MethodInfo where
- (MethodInfo m_a c_a s_a) == (MethodInfo m_b c_b s_b) =
- (m_a == m_b) && (c_a == c_b) && (s_a == s_b)
-
--- TODO(bernhard): not really efficient. also, outsource that to hs-java
-instance Ord MethodSignature where
- compare (MethodSignature args_a ret_a) (MethodSignature args_b ret_b)
- | cmp_args /= EQ = cmp_args
- | otherwise = (show ret_a) `compare` (show ret_b)
- where
- cmp_args = (show args_a) `compare` (show args_b)
-
-instance Ord MethodInfo where
- compare (MethodInfo m_a c_a s_a) (MethodInfo m_b c_b s_b)
- | cmp_m /= EQ = cmp_m
- | cmp_c /= EQ = cmp_c
- | otherwise = s_a `compare` s_b
- where
- cmp_m = m_a `compare` m_b
- cmp_c = c_a `compare` c_b
+-- java strings are allocated only once, therefore we
+-- use a hashmap to store the address for a String
+type StringMap = M.Map B.ByteString Word32
-instance Show MethodInfo where
- show (MethodInfo method c sig) =
- (toString c) ++ "." ++ (toString method) ++ "." ++ (show sig)
+
+-- map "methodtable addr" to "classname"
+-- we need that to identify the actual type
+-- on the invokevirtual insn
+type VirtualMap = M.Map Word32 B.ByteString
+
+
+-- store each parsed Interface upon first loading
+type InterfaceMap = M.Map B.ByteString (Class Direct)
+
+-- store offset for each <Interface><Method><Signature> pair
+type InterfaceMethodMap = M.Map B.ByteString Word32
+{-
toString :: B.ByteString -> String
toString bstr = decodeString $ map (chr . fromIntegral) $ B.unpack bstr
+-}
+-- better solutions for a global map hack are welcome! (typeclasses, TH, ...?)
--- global map hax
-foreign import ccall "get_trapmap"
- get_trapmap :: IO (Ptr ())
+data MateCtx = MateCtx {
+ ctxMethodMap :: MethodMap,
+ ctxTrapMap :: TrapMap,
+ ctxClassMap :: ClassMap,
+ ctxVirtualMap :: VirtualMap,
+ ctxStringMap :: StringMap,
+ ctxInterfaceMap :: InterfaceMap,
+ ctxInterfaceMethodMap :: InterfaceMethodMap }
-foreign import ccall "set_trapmap"
- set_trapmap :: Ptr () -> IO ()
+emptyMateCtx :: MateCtx
+emptyMateCtx = MateCtx M.empty M.empty M.empty M.empty M.empty M.empty M.empty
-foreign import ccall "get_methodmap"
- get_methodmap :: IO (Ptr ())
+mateCtx :: IORef MateCtx
+{-# NOINLINE mateCtx #-}
+mateCtx = unsafePerformIO $ newIORef emptyMateCtx
-foreign import ccall "set_methodmap"
- set_methodmap :: Ptr () -> IO ()
+-- TODO(bernhard): if we ever have thread support, don't forget MVars
+#define SETMAP(name) set##name :: name -> IO (); \
+ set##name m = do ctx <- readIORef mateCtx; \
+ writeIORef mateCtx $ ctx { ctx##name = m };
-foreign import ccall "get_classmap"
- get_classmap :: IO (Ptr ())
+#define GETMAP(name) get##name :: IO name ; \
+ get##name = do ctx <- readIORef mateCtx; \
+ return $ ctx##name ctx;
-foreign import ccall "set_classmap"
- set_classmap :: Ptr () -> IO ()
+SETMAP(MethodMap);
+GETMAP(MethodMap)
--- TODO(bernhard): make some typeclass magic 'n stuff
-mmap2ptr :: MMap -> IO (Ptr ())
-mmap2ptr mmap = do
- ptr_mmap <- newStablePtr mmap
- return $ castStablePtrToPtr ptr_mmap
+SETMAP(TrapMap)
+GETMAP(TrapMap)
-ptr2mmap :: Ptr () -> IO MMap
-ptr2mmap vmap = deRefStablePtr $ ((castPtrToStablePtr vmap) :: StablePtr MMap)
+SETMAP(ClassMap)
+GETMAP(ClassMap)
-tmap2ptr :: TMap -> IO (Ptr ())
-tmap2ptr tmap = do
- ptr_tmap <- newStablePtr tmap
- return $ castStablePtrToPtr ptr_tmap
+SETMAP(VirtualMap)
+GETMAP(VirtualMap)
-ptr2tmap :: Ptr () -> IO TMap
-ptr2tmap vmap = deRefStablePtr $ ((castPtrToStablePtr vmap) :: StablePtr tmap)
+SETMAP(StringMap)
+GETMAP(StringMap)
-classmap2ptr :: ClassMap -> IO (Ptr ())
-classmap2ptr cmap = do
- ptr_cmap <- newStablePtr cmap
- return $ castStablePtrToPtr ptr_cmap
+SETMAP(InterfaceMap)
+GETMAP(InterfaceMap)
-ptr2classmap :: Ptr () -> IO ClassMap
-ptr2classmap vmap = deRefStablePtr $ ((castPtrToStablePtr vmap) :: StablePtr cmap)
+SETMAP(InterfaceMethodMap)
+GETMAP(InterfaceMethodMap)
projects / mate.git / blobdiff