+{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE ForeignFunctionInterface #-}
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 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
+
-- Word32 = point of method call in generated code
-- MethodInfo = relevant information about callee
-type CMap = M.Map Word32 MethodInfo
+type TrapMap = M.Map Word32 TrapInfo
--- B.ByteString = name of method
--- Word32 = entrypoint of method
-type MMap = M.Map MethodInfo Word32
+data TrapInfo =
+ MI MethodInfo | -- for static calls
+ VI MethodInfo | -- for virtual calls
+ II MethodInfo | -- for interface calls
+ SFI 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}
-
-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)
+ methClassName :: B.ByteString,
+ methSignature :: MethodSignature
+ } deriving (Eq, Ord)
-- TODO(bernhard): not really efficient. also, outsource that to hs-java
+-- deriving should be enough?
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
+ | otherwise = show ret_a `compare` show ret_b
+ where cmp_args = show args_a `compare` show args_b
instance Show MethodInfo where
show (MethodInfo method c sig) =
- (toString c) ++ "." ++ (toString method) ++ "." ++ (show 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 Resolved,
+ 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 Resolved)
+
+-- 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
+
+
+-- those functions are for the "global map hax"
+-- TODO(bernhard): other solution please
+foreign import ccall "set_mate_context"
+ set_mate_context :: Ptr () -> IO ()
+
+foreign import ccall "get_mate_context"
+ get_mate_context :: IO (Ptr ())
+
+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
+
+ctx2ptr :: MateCtx -> IO (Ptr ())
+ctx2ptr ctx = do
+ ptr <- newStablePtr ctx
+ return $ castStablePtrToPtr ptr
+
+ptr2ctx :: Ptr () -> IO MateCtx
+ptr2ctx ptr = deRefStablePtr (castPtrToStablePtr ptr :: StablePtr MateCtx)
+
+
+setMethodMap :: MethodMap -> IO ()
+setMethodMap m = do
+ ctx <- get_mate_context >>= ptr2ctx
+ ctx2ptr ctx { ctxMethodMap = m } >>= set_mate_context
+
+getMethodMap :: IO MethodMap
+getMethodMap = do
+ ctx <- get_mate_context >>= ptr2ctx
+ return $ ctxMethodMap ctx
+
+
+setTrapMap :: TrapMap -> IO ()
+setTrapMap m = do
+ ctx <- get_mate_context >>= ptr2ctx
+ ctx2ptr ctx { ctxTrapMap = m } >>= set_mate_context
+
+getTrapMap :: IO TrapMap
+getTrapMap = do
+ ctx <- get_mate_context >>= ptr2ctx
+ return $ ctxTrapMap ctx
+
+
+setClassMap :: ClassMap -> IO ()
+setClassMap m = do
+ ctx <- get_mate_context >>= ptr2ctx
+ ctx2ptr ctx { ctxClassMap = m } >>= set_mate_context
+
+getClassMap :: IO ClassMap
+getClassMap = do
+ ctx <- get_mate_context >>= ptr2ctx
+ return $ ctxClassMap ctx
+
+
+setVirtualMap :: VirtualMap -> IO ()
+setVirtualMap m = do
+ ctx <- get_mate_context >>= ptr2ctx
+ ctx2ptr ctx { ctxVirtualMap = m } >>= set_mate_context
+
+getVirtualMap :: IO VirtualMap
+getVirtualMap = do
+ ctx <- get_mate_context >>= ptr2ctx
+ return $ ctxVirtualMap ctx
+
+
+setStringMap :: StringMap -> IO ()
+setStringMap m = do
+ ctx <- get_mate_context >>= ptr2ctx
+ ctx2ptr ctx { ctxStringMap = m } >>= set_mate_context
+
+getStringMap :: IO StringMap
+getStringMap = do
+ ctx <- get_mate_context >>= ptr2ctx
+ return $ ctxStringMap ctx
+
+
+setInterfaceMap :: InterfaceMap -> IO ()
+setInterfaceMap m = do
+ ctx <- get_mate_context >>= ptr2ctx
+ ctx2ptr ctx { ctxInterfaceMap = m } >>= set_mate_context
+
+getInterfaceMap :: IO InterfaceMap
+getInterfaceMap = do
+ ctx <- get_mate_context >>= ptr2ctx
+ return $ ctxInterfaceMap ctx
+
+
+setInterfaceMethodMap :: InterfaceMethodMap -> IO ()
+setInterfaceMethodMap m = do
+ ctx <- get_mate_context >>= ptr2ctx
+ ctx2ptr ctx { ctxInterfaceMethodMap = m } >>= set_mate_context
+
+getInterfaceMethodMap :: IO InterfaceMethodMap
+getInterfaceMethodMap = do
+ ctx <- get_mate_context >>= ptr2ctx
+ return $ ctxInterfaceMethodMap ctx
projects / mate.git / blobdiff