\section[ByteCodeLink]{Bytecode assembler and linker}
\begin{code}
+
+{-# OPTIONS -optc-DNON_POSIX_SOURCE #-}
+
module ByteCodeLink ( UnlinkedBCO, UnlinkedBCOExpr, assembleBCO,
ClosureEnv, HValue, filterNameMap,
linkIModules, linkIExpr,
import ByteCodeItbls ( ItblEnv, ItblPtr )
-import Monad ( foldM )
+import Monad ( when, foldM )
import ST ( runST )
import IArray ( array )
import MArray ( castSTUArray,
newIntArray, writeIntArray,
newAddrArray, writeAddrArray,
readWordArray )
-import Foreign ( Word16, Ptr(..) )
-import Addr ( Word, Addr, nullAddr )
+import Foreign ( Word16, Ptr(..), free )
+import Addr ( Word, Addr(..), nullAddr )
+import Weak ( addFinalizer )
import FiniteMap
import PrelBase ( Int(..) )
-> IO ([HValue], ItblEnv, ClosureEnv)
linkIModules gie gce mods
= do let (bcoss, ies) = unzip mods
- bcos = concat bcoss
- final_gie = foldr plusFM gie ies
+ bcos = concat bcoss
+ final_gie = foldr plusFM gie ies
(final_gce, linked_bcos) <- linkSomeBCOs True final_gie gce bcos
return (linked_bcos, final_gie, final_gce)
-- Top level assembler fn.
assembleBCO :: ProtoBCO Name -> IO UnlinkedBCO
-assembleBCO (ProtoBCO nm instrs origin)
+assembleBCO (ProtoBCO nm instrs origin malloced)
= let
-- pass 1: collect up the offsets of the local labels.
-- Remember that the first insn starts at offset 1 since offset 0
itbls <- return emptySS :: IO (SizedSeq Name)
let init_asm_state = (insns,lits,ptrs,itbls)
(final_insns, final_lits, final_ptrs, final_itbls)
- <- mkBits findLabel init_asm_state instrs
+ <- mkBits findLabel init_asm_state instrs
- return (UnlinkedBCO nm final_insns final_lits final_ptrs final_itbls)
+ let ul_bco = UnlinkedBCO nm final_insns final_lits final_ptrs final_itbls
+
+ -- 8 Aug 01: Finalisers aren't safe when attached to non-primitive
+ -- objects, since they might get run too early. Disable this until
+ -- we figure out what to do.
+ -- when (not (null malloced)) (addFinalizer ul_bco (mapM_ zonk malloced))
+
+ return ul_bco
+ where
+ zonk (A# a#) = do -- putStrLn ("freeing malloc'd block at " ++ show (A# a#))
+ free (Ptr a#)
-- instrs nonptrs ptrs itbls
type AsmState = (SizedSeq Word16, SizedSeq Word,
doInstr :: AsmState -> BCInstr -> IO AsmState
doInstr st i
= case i of
+ SWIZZLE stkoff n -> instr3 st i_SWIZZLE stkoff n
ARGCHECK n -> instr2 st i_ARGCHECK n
STKCHECK n -> instr2 st i_STKCHECK n
PUSH_L o1 -> instr2 st i_PUSH_L o1
PUSH_AS nm pk -> do (p, st2) <- ptr st (Left nm)
(np, st3) <- ctoi_itbl st2 pk
instr3 st3 i_PUSH_AS p np
- PUSH_UBX lit nws -> do (np, st2) <- literal st lit
+ PUSH_UBX (Left lit) nws
+ -> do (np, st2) <- literal st lit
+ instr3 st2 i_PUSH_UBX np nws
+ PUSH_UBX (Right aa) nws
+ -> do (np, st2) <- addr st aa
instr3 st2 i_PUSH_UBX np nws
+
PUSH_TAG tag -> instr2 st i_PUSH_TAG tag
SLIDE n by -> instr3 st i_SLIDE n by
ALLOC n -> instr2 st i_ALLOC n
TESTLT_P i l -> instr3 st i_TESTLT_P i (findLabel l)
TESTEQ_P i l -> instr3 st i_TESTEQ_P i (findLabel l)
CASEFAIL -> instr1 st i_CASEFAIL
- JMP l -> instr2 st i_JMP (findLabel l)
+ JMP l -> instr2 st i_JMP (findLabel l)
ENTER -> instr1 st i_ENTER
- RETURN rep -> do (itbl_no,st2) <- itoc_itbl st rep
+ RETURN rep -> do (itbl_no,st2) <- itoc_itbl st rep
instr2 st2 i_RETURN itbl_no
+ CCALL m_addr -> do (np, st2) <- addr st m_addr
+ instr2 st2 i_CCALL np
i2s :: Int -> Word16
i2s = fromIntegral
literal st (MachFloat r) = float st (fromRational r)
literal st (MachDouble r) = double st (fromRational r)
literal st (MachChar c) = int st c
+ literal st other = pprPanic "ByteCodeLink.literal" (ppr other)
ctoi_itbl st pk
= addr st ret_itbl_addr
where
- ret_itbl_addr = case pk of
- PtrRep -> stg_ctoi_ret_R1p_info
- WordRep -> stg_ctoi_ret_R1n_info
- IntRep -> stg_ctoi_ret_R1n_info
- AddrRep -> stg_ctoi_ret_R1n_info
- CharRep -> stg_ctoi_ret_R1n_info
- FloatRep -> stg_ctoi_ret_F1_info
- DoubleRep -> stg_ctoi_ret_D1_info
- VoidRep -> stg_ctoi_ret_V_info
- _ -> pprPanic "mkBits.ctoi_itbl" (ppr pk)
+ ret_itbl_addr
+ = case pk of
+ PtrRep -> stg_ctoi_ret_R1p_info
+ WordRep -> stg_ctoi_ret_R1n_info
+ IntRep -> stg_ctoi_ret_R1n_info
+ AddrRep -> stg_ctoi_ret_R1n_info
+ CharRep -> stg_ctoi_ret_R1n_info
+ FloatRep -> stg_ctoi_ret_F1_info
+ DoubleRep -> stg_ctoi_ret_D1_info
+ VoidRep -> stg_ctoi_ret_V_info
+ other -> pprPanic "ByteCodeLink.ctoi_itbl" (ppr pk)
itoc_itbl st pk
= addr st ret_itbl_addr
where
- ret_itbl_addr = case pk of
- CharRep -> stg_gc_unbx_r1_info
- IntRep -> stg_gc_unbx_r1_info
- FloatRep -> stg_gc_f1_info
- DoubleRep -> stg_gc_d1_info
- VoidRep -> nullAddr
- -- Interpreter.c spots this special case
+ ret_itbl_addr
+ = case pk of
+ CharRep -> stg_gc_unbx_r1_ret_info
+ IntRep -> stg_gc_unbx_r1_ret_info
+ AddrRep -> stg_gc_unbx_r1_ret_info
+ FloatRep -> stg_gc_f1_ret_info
+ DoubleRep -> stg_gc_d1_ret_info
+ VoidRep -> nullAddr
+ -- Interpreter.c spots this special case
+ other -> pprPanic "ByteCodeLink.itoc_itbl" (ppr pk)
foreign label "stg_ctoi_ret_R1p_info" stg_ctoi_ret_R1p_info :: Addr
foreign label "stg_ctoi_ret_R1n_info" stg_ctoi_ret_R1n_info :: Addr
foreign label "stg_ctoi_ret_D1_info" stg_ctoi_ret_D1_info :: Addr
foreign label "stg_ctoi_ret_V_info" stg_ctoi_ret_V_info :: Addr
-foreign label "stg_gc_unbx_r1_info" stg_gc_unbx_r1_info :: Addr
-foreign label "stg_gc_f1_info" stg_gc_f1_info :: Addr
-foreign label "stg_gc_d1_info" stg_gc_d1_info :: Addr
+foreign label "stg_gc_unbx_r1_ret_info" stg_gc_unbx_r1_ret_info :: Addr
+foreign label "stg_gc_f1_ret_info" stg_gc_f1_ret_info :: Addr
+foreign label "stg_gc_d1_ret_info" stg_gc_d1_ret_info :: Addr
-- The size in 16-bit entities of an instruction.
instrSize16s :: BCInstr -> Int
case m of
Just (Ptr addr) -> case addrToHValue# addr of
(# hval #) -> return hval
- Nothing -> pprPanic "ByteCodeGen.lookupCE(primop)" (ppr primop)
+ Nothing -> pprPanic "ByteCodeLink.lookupCE(primop)" (ppr primop)
lookupCE ce (Left nm)
= case lookupFM ce nm of
Just aa -> return aa
case m of
Just (Ptr addr) -> case addrToHValue# addr of
(# hval #) -> return hval
- Nothing -> pprPanic "ByteCodeGen.lookupCE" (ppr nm)
+ Nothing -> pprPanic "ByteCodeLink.lookupCE" (ppr nm)
lookupIE :: ItblEnv -> Name -> IO (Ptr a)
lookupIE ie con_nm
n <- lookupSymbol (nameToCLabel con_nm "static_info")
case n of
Just addr -> return addr
- Nothing -> pprPanic "ByteCodeGen.lookupIE" (ppr con_nm)
+ Nothing -> pprPanic "ByteCodeLink.lookupIE" (ppr con_nm)
-- HACKS!!! ToDo: cleaner
nameToCLabel :: Name -> String{-suffix-} -> String
i_RETURN = (bci_RETURN :: Int)
i_STKCHECK = (bci_STKCHECK :: Int)
i_JMP = (bci_JMP :: Int)
+#ifdef bci_CCALL
+i_CCALL = (bci_CCALL :: Int)
+i_SWIZZLE = (bci_SWIZZLE :: Int)
+#else
+i_CCALL = error "Sorry pal, you need to bootstrap to use i_CCALL."
+i_SWIZZLE = error "Sorry pal, you need to bootstrap to use i_SWIZZLE."
+#endif
iNTERP_STACK_CHECK_THRESH = (INTERP_STACK_CHECK_THRESH :: Int)
projects / ghc-hetmet.git / blobdiff