+{-# LANGUAGE OverloadedStrings #-}
+{-# 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 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 CMap = M.Map Word32 MethodInfo
+type TrapMap = M.Map Word32 TrapCause
--- B.ByteString = name of method
--- Word32 = entrypoint of method
-type MMap = M.Map MethodInfo Word32
+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 } deriving Show
+-- B.ByteString = name of method
+-- Word32 = entrypoint of method
+type MethodMap = M.Map MethodInfo Word32
+
data MethodInfo = MethodInfo {
methName :: B.ByteString,
- cName :: B.ByteString,
- mSignature :: MethodSignature,
- cpIndex :: Word16 }
-
-instance Eq MethodInfo where
- (MethodInfo m_a c_a s_a i_a) == (MethodInfo m_b c_b s_b i_b) =
- (m_a == m_b) && (c_a == c_b) && (s_a == s_b) && (i_a == i_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 i_a) (MethodInfo m_b c_b s_b i_b)
- | cmp_m /= EQ = cmp_m
- | cmp_c /= EQ = cmp_c
- | cmp_s /= EQ = cmp_s
- | otherwise = i_a `compare` i_b
- where
- cmp_m = m_a `compare` m_b
- cmp_c = c_a `compare` c_b
- cmp_s = s_a `compare` s_b
+ methClassName :: B.ByteString,
+ methSignature :: MethodSignature
+ } deriving (Eq, Ord)
instance Show MethodInfo where
- show (MethodInfo method c sig idx) =
- (toString c) ++ "." ++ (toString method) ++ "." ++ (show sig) ++ "@" ++ (show idx)
+ 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
+
+
+-- 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
+
+-- 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, ...?)
+
+data MateCtx = MateCtx {
+ ctxMethodMap :: MethodMap,
+ ctxTrapMap :: TrapMap,
+ ctxClassMap :: ClassMap,
+ ctxVirtualMap :: VirtualMap,
+ ctxStringMap :: StringMap,
+ ctxInterfaceMap :: InterfaceMap,
+ ctxInterfaceMethodMap :: InterfaceMethodMap }
+
+emptyMateCtx :: MateCtx
+emptyMateCtx = MateCtx M.empty M.empty M.empty M.empty M.empty M.empty M.empty
+
+mateCtx :: IORef MateCtx
+{-# NOINLINE mateCtx #-}
+mateCtx = unsafePerformIO $ newIORef emptyMateCtx
+
+-- 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 };
+
+#define GETMAP(name) get##name :: IO name ; \
+ get##name = do ctx <- readIORef mateCtx; \
+ return $ ctx##name ctx;
+
+SETMAP(MethodMap);
+GETMAP(MethodMap)
+
+SETMAP(TrapMap)
+GETMAP(TrapMap)
+
+SETMAP(ClassMap)
+GETMAP(ClassMap)
+
+SETMAP(VirtualMap)
+GETMAP(VirtualMap)
+
+SETMAP(StringMap)
+GETMAP(StringMap)
+
+SETMAP(InterfaceMap)
+GETMAP(InterfaceMap)
+
+SETMAP(InterfaceMethodMap)
+GETMAP(InterfaceMethodMap)
projects / mate.git / blobdiff