import Data.Int
import Data.Maybe
import qualified Data.Map as M
+import qualified Data.Set as S
import qualified Data.ByteString.Lazy as B
import Control.Monad
foreign import ccall "getaddr"
getaddr :: CUInt
+foreign import ccall "getMallocAddr"
+ getMallocAddr :: CUInt
+
foreign import ccall "callertrap"
callertrap :: IO ()
return $ w32_ep + (fromIntegral offset)
emit' :: J.Instruction -> CodeGen e s (Maybe (Word32, TrapInfo))
+ emit' (INVOKESPECIAL cpidx) = emit' (INVOKESTATIC cpidx)
emit' (INVOKESTATIC cpidx) = do
let l = buildMethodID cls cpidx
calladdr <- getCurrentOffset
let trapaddr = (fromIntegral getaddr :: Word32)
call (trapaddr - w32_calladdr)
add esp (4 :: Word32)
+ emit DUP = pop (Disp 0, esp)
+ emit (NEW objidx) = do
+ -- TODO(bernhard): determine right amount...
+ let amount = 0x20
+ push (amount :: Word32)
+ calladdr <- getCurrentOffset
+ let w32_calladdr = 5 + calladdr
+ let malloaddr = (fromIntegral getMallocAddr :: Word32)
+ call (malloaddr - w32_calladdr)
+ add esp (4 :: Word32)
+ push eax
+ -- TODO(bernhard): save reference somewhere for GC
emit (BIPUSH val) = push ((fromIntegral val) :: Word32)
emit (SIPUSH val) = push ((fromIntegral $ ((fromIntegral val) :: Int16)) :: Word32)
emit (ICONST_0) = push (0 :: Word32)
emit (ICONST_2) = push (2 :: Word32)
emit (ICONST_4) = push (4 :: Word32)
emit (ICONST_5) = push (5 :: Word32)
+ emit (ALOAD_ x) = emit (ILOAD_ x)
emit (ILOAD_ x) = do
push (Disp (cArgs_ x), ebp)
+ emit (ALOAD x) = emit (ILOAD x)
emit (ILOAD x) = do
push (Disp (cArgs x), ebp)
+ emit (ASTORE_ x) = emit (ISTORE_ x)
emit (ISTORE_ x) = do
pop eax
mov (Disp (cArgs_ x), ebp) eax
+ emit (ASTORE x) = emit (ISTORE x)
emit (ISTORE x) = do
pop eax
mov (Disp (cArgs x), ebp) eax
+
+ emit (GETFIELD x) = do
+ pop eax -- this pointer
+ push (Disp (fromIntegral x * 4), eax) -- get field
+ emit (PUTFIELD x) = do
+ pop ebx -- value to write
+ pop eax -- this pointer
+ mov (Disp (fromIntegral x * 4), eax) ebx -- set field
+
emit IADD = do pop ebx; pop eax; add eax ebx; push eax
emit ISUB = do pop ebx; pop eax; sub eax ebx; push eax
emit IMUL = do pop ebx; pop eax; mul ebx; push eax
cArgs_ x = cArgs $ case x of I0 -> 0; I1 -> 1; I2 -> 2; I3 -> 3
thisMethodArgCnt :: Word32
- thisMethodArgCnt = fromIntegral $ length args
+ thisMethodArgCnt = isNonStatic + (fromIntegral $ length args)
where
(Just m) = lookupMethod method cls
(MethodSignature args _) = methodSignature m
+ isNonStatic = if S.member ACC_STATIC (methodAccessFlags m)
+ then 0
+ else 1 -- one argument for the this pointer
+
-- sign extension from w8 to w32 (over s8)
-- unfortunately, hs-java is using Word8 everywhere (while