1 {-# LANGUAGE OverloadedStrings #-}
2 {-# LANGUAGE ForeignFunctionInterface #-}
3 module Mate.Types where
8 import qualified Data.Map as M
9 import qualified Data.ByteString.Lazy as B
10 import Codec.Binary.UTF8.String hiding (encode,decode)
13 import System.IO.Unsafe
20 -- Represents a CFG node
21 data BasicBlock = BasicBlock {
22 code :: [Instruction],
25 -- describes (leaving) edges of a CFG node
26 data BBEnd = Return | FallThrough BlockID | OneTarget BlockID | TwoTarget BlockID BlockID deriving Show
28 type MapBB = M.Map BlockID BasicBlock
32 -- Word32 = point of method call in generated code
33 -- MethodInfo = relevant information about callee
34 type TrapMap = M.Map Word32 TrapInfo
37 MI MethodInfo | -- for static calls
38 VI MethodInfo | -- for virtual calls
39 II MethodInfo | -- for interface calls
40 SFI StaticFieldInfo deriving Show
42 data StaticFieldInfo = StaticFieldInfo {
43 sfiClassName :: B.ByteString,
44 sfiFieldName :: B.ByteString } deriving Show
48 -- B.ByteString = name of method
49 -- Word32 = entrypoint of method
50 type MethodMap = M.Map MethodInfo Word32
52 data MethodInfo = MethodInfo {
53 methName :: B.ByteString,
54 methClassName :: B.ByteString,
55 methSignature :: MethodSignature
58 -- TODO(bernhard): not really efficient. also, outsource that to hs-java
59 -- deriving should be enough?
60 instance Ord MethodSignature where
61 compare (MethodSignature args_a ret_a) (MethodSignature args_b ret_b)
62 | cmp_args /= EQ = cmp_args
63 | otherwise = show ret_a `compare` show ret_b
64 where cmp_args = show args_a `compare` show args_b
66 instance Show MethodInfo where
67 show (MethodInfo method c sig) =
68 toString c ++ "." ++ toString method ++ "." ++ show sig
72 -- store information of loaded classes
73 type ClassMap = M.Map B.ByteString ClassInfo
75 data ClassInfo = ClassInfo {
76 ciName :: B.ByteString,
77 ciFile :: Class Resolved,
78 ciStaticMap :: FieldMap,
79 ciFieldMap :: FieldMap,
80 ciMethodMap :: FieldMap,
81 ciMethodBase :: Word32,
85 -- store field offsets in a map
86 type FieldMap = M.Map B.ByteString Int32
89 -- java strings are allocated only once, therefore we
90 -- use a hashmap to store the address for a String
91 type StringMap = M.Map B.ByteString Word32
94 -- map "methodtable addr" to "classname"
95 -- we need that to identify the actual type
96 -- on the invokevirtual insn
97 type VirtualMap = M.Map Word32 B.ByteString
100 -- store each parsed Interface upon first loading
101 type InterfaceMap = M.Map B.ByteString (Class Resolved)
103 -- store offset for each <Interface><Method><Signature> pair
104 type InterfaceMethodMap = M.Map B.ByteString Word32
107 toString :: B.ByteString -> String
108 toString bstr = decodeString $ map (chr . fromIntegral) $ B.unpack bstr
111 data MateCtx = MateCtx {
112 ctxMethodMap :: MethodMap,
113 ctxTrapMap :: TrapMap,
114 ctxClassMap :: ClassMap,
115 ctxVirtualMap :: VirtualMap,
116 ctxStringMap :: StringMap,
117 ctxInterfaceMap :: InterfaceMap,
118 ctxInterfaceMethodMap :: InterfaceMethodMap }
120 emptyMateCtx :: MateCtx
121 emptyMateCtx = MateCtx M.empty M.empty M.empty M.empty M.empty M.empty M.empty
123 mateCtx :: IORef MateCtx
124 {-# NOINLINE mateCtx #-}
125 mateCtx = unsafePerformIO $ newIORef emptyMateCtx
128 setMethodMap :: MethodMap -> IO ()
130 ctx <- readIORef mateCtx
131 writeIORef mateCtx $ ctx { ctxMethodMap = m }
133 getMethodMap :: IO MethodMap
135 ctx <- readIORef mateCtx
136 return $ ctxMethodMap ctx
139 setTrapMap :: TrapMap -> IO ()
141 ctx <- readIORef mateCtx
142 writeIORef mateCtx $ ctx { ctxTrapMap = m }
144 getTrapMap :: IO TrapMap
146 ctx <- readIORef mateCtx
147 return $ ctxTrapMap ctx
150 setClassMap :: ClassMap -> IO ()
152 ctx <- readIORef mateCtx
153 writeIORef mateCtx $ ctx { ctxClassMap = m }
155 getClassMap :: IO ClassMap
157 ctx <- readIORef mateCtx
158 return $ ctxClassMap ctx
161 setVirtualMap :: VirtualMap -> IO ()
163 ctx <- readIORef mateCtx
164 writeIORef mateCtx $ ctx { ctxVirtualMap = m }
166 getVirtualMap :: IO VirtualMap
168 ctx <- readIORef mateCtx
169 return $ ctxVirtualMap ctx
172 setStringMap :: StringMap -> IO ()
174 ctx <- readIORef mateCtx
175 writeIORef mateCtx $ ctx { ctxStringMap = m }
177 getStringMap :: IO StringMap
179 ctx <- readIORef mateCtx
180 return $ ctxStringMap ctx
183 setInterfaceMap :: InterfaceMap -> IO ()
184 setInterfaceMap m = do
185 ctx <- readIORef mateCtx
186 writeIORef mateCtx $ ctx { ctxInterfaceMap = m }
188 getInterfaceMap :: IO InterfaceMap
190 ctx <- readIORef mateCtx
191 return $ ctxInterfaceMap ctx
194 setInterfaceMethodMap :: InterfaceMethodMap -> IO ()
195 setInterfaceMethodMap m = do
196 ctx <- readIORef mateCtx
197 writeIORef mateCtx $ ctx { ctxInterfaceMethodMap = m }
199 getInterfaceMethodMap :: IO InterfaceMethodMap
200 getInterfaceMethodMap = do
201 ctx <- readIORef mateCtx
202 return $ ctxInterfaceMethodMap ctx