#include "HsVersions.h"
import Name ( Name, getName )
-import FiniteMap ( FiniteMap, listToFM, emptyFM, plusFM )
-import Type ( typePrimRep )
+import NameEnv
+import SMRep ( typeCgRep )
import DataCon ( DataCon, dataConRepArgTys )
import TyCon ( TyCon, tyConFamilySize, isDataTyCon, tyConDataCons )
-import Constants ( mIN_SIZE_NonUpdHeapObject )
-import ClosureInfo ( mkVirtHeapOffsets )
+import Constants ( mIN_SIZE_NonUpdHeapObject, wORD_SIZE )
+import CgHeapery ( mkVirtHeapOffsets )
import FastString ( FastString(..) )
+import Util ( lengthIs, listLengthCmp )
-import Foreign ( Storable(..), Word8, Word16, Word32, Word64, Ptr(..),
- malloc, castPtr, plusPtr, Addr )
-import Addr ( addrToInt )
-import Bits ( Bits(..), shiftR )
-
-import PrelBase ( Int(..) )
-import PrelIOBase ( IO(..) )
-
-import Monad ( liftM )
+import Foreign
+import Foreign.C
+import DATA_BITS ( Bits(..), shiftR )
+import GHC.Exts ( Int(I#), addr2Int# )
+#if __GLASGOW_HASKELL__ < 503
+import Ptr ( Ptr(..) )
+#else
+import GHC.Ptr ( Ptr(..) )
+#endif
\end{code}
%************************************************************************
%************************************************************************
\begin{code}
-
type ItblPtr = Ptr StgInfoTable
-type ItblEnv = FiniteMap Name ItblPtr
+type ItblEnv = NameEnv (Name, ItblPtr)
+ -- We need the Name in the range so we know which
+ -- elements to filter out when unloading a module
+
+mkItblEnv :: [(Name,ItblPtr)] -> ItblEnv
+mkItblEnv pairs = mkNameEnv [(n, (n,p)) | (n,p) <- pairs]
-- Make info tables for the data decls in this module
mkITbls :: [TyCon] -> IO ItblEnv
-mkITbls [] = return emptyFM
+mkITbls [] = return emptyNameEnv
mkITbls (tc:tcs) = do itbls <- mkITbl tc
itbls2 <- mkITbls tcs
- return (itbls `plusFM` itbls2)
+ return (itbls `plusNameEnv` itbls2)
mkITbl :: TyCon -> IO ItblEnv
mkITbl tc
| not (isDataTyCon tc)
- = return emptyFM
- | n == length dcs -- paranoia; this is an assertion.
+ = return emptyNameEnv
+ | dcs `lengthIs` n -- paranoia; this is an assertion.
= make_constr_itbls dcs
where
dcs = tyConDataCons tc
n = tyConFamilySize tc
-cONSTR :: Int
-cONSTR = 1 -- as defined in ghc/includes/ClosureTypes.h
+#include "../includes/ClosureTypes.h"
+cONSTR :: Int -- Defined in ClosureTypes.h
+cONSTR = CONSTR
-- Assumes constructors are numbered from zero, not one
make_constr_itbls :: [DataCon] -> IO ItblEnv
make_constr_itbls cons
- | length cons <= 8
+ | listLengthCmp cons 8 /= GT -- <= 8 elements in the list
= do is <- mapM mk_vecret_itbl (zip cons [0..])
- return (listToFM is)
+ return (mkItblEnv is)
| otherwise
= do is <- mapM mk_dirret_itbl (zip cons [0..])
- return (listToFM is)
+ return (mkItblEnv is)
where
mk_vecret_itbl (dcon, conNo)
= mk_itbl dcon conNo (vecret_entry conNo)
mk_dirret_itbl (dcon, conNo)
= mk_itbl dcon conNo stg_interp_constr_entry
- mk_itbl :: DataCon -> Int -> Addr -> IO (Name,ItblPtr)
+ mk_itbl :: DataCon -> Int -> Ptr () -> IO (Name,ItblPtr)
mk_itbl dcon conNo entry_addr
- = let (tot_wds, ptr_wds, _)
- = mkVirtHeapOffsets typePrimRep (dataConRepArgTys dcon)
+ = let rep_args = [ (typeCgRep arg,arg)
+ | arg <- dataConRepArgTys dcon ]
+ (tot_wds, ptr_wds, _) = mkVirtHeapOffsets False{-not a THUNK-} rep_args
+
ptrs = ptr_wds
nptrs = tot_wds - ptr_wds
nptrs_really
-- This is the only arch-dependent bit.
code = mkJumpToAddr entry_addr
in
- do addr <- malloc
+ do addr <- malloc_exec (sizeOf itbl)
--putStrLn ("SIZE of itbl is " ++ show (sizeOf itbl))
--putStrLn ("# ptrs of itbl is " ++ show ptrs)
--putStrLn ("# nptrs of itbl is " ++ show nptrs_really)
poke addr itbl
- return (getName dcon, addr `plusPtr` 8)
+ return (getName dcon, addr `plusPtr` (2 * wORD_SIZE))
-- Make code which causes a jump to the given address. This is the
itblCodeLength :: Int
itblCodeLength = length (mkJumpToAddr undefined)
-mkJumpToAddr :: Addr -> [ItblCode]
+mkJumpToAddr :: Ptr () -> [ItblCode]
+
+ptrToInt (Ptr a#) = I# (addr2Int# a#)
#if sparc_TARGET_ARCH
-- After some consideration, we'll try this, where
type ItblCode = Word32
mkJumpToAddr a
- = let w32 = fromIntegral (addrToInt a)
+ = let w32 = fromIntegral (ptrToInt a)
hi22, lo10 :: Word32 -> Word32
lo10 x = x .&. 0x3FF
0x8610E000 .|. (lo10 w32),
0x81C0C000,
0x01000000 ]
-#endif
-#if i386_TARGET_ARCH
+#elif powerpc_TARGET_ARCH
+-- We'll use r12, for no particular reason.
+-- 0xDEADBEEF stands for the adress:
+-- 3D80DEAD lis r12,0xDEAD
+-- 618CBEEF ori r12,r12,0xBEEF
+-- 7D8903A6 mtctr r12
+-- 4E800420 bctr
+
+type ItblCode = Word32
+mkJumpToAddr a =
+ let w32 = fromIntegral (ptrToInt a)
+ hi16 x = (x `shiftR` 16) .&. 0xFFFF
+ lo16 x = x .&. 0xFFFF
+ in [
+ 0x3D800000 .|. hi16 w32,
+ 0x618C0000 .|. lo16 w32,
+ 0x7D8903A6, 0x4E800420
+ ]
+
+#elif i386_TARGET_ARCH
-- Let the address to jump to be 0xWWXXYYZZ.
-- Generate movl $0xWWXXYYZZ,%eax ; jmp *%eax
-- which is
type ItblCode = Word8
mkJumpToAddr a
- = let w32 = fromIntegral (addrToInt a)
+ = let w32 = fromIntegral (ptrToInt a) :: Word32
insnBytes :: [Word8]
insnBytes
- = [0xB8, byte 0 w32, byte 1 w32,
- byte 2 w32, byte 3 w32,
+ = [0xB8, byte0 w32, byte1 w32,
+ byte2 w32, byte3 w32,
0xFF, 0xE0]
in
insnBytes
-#endif
-#if alpha_TARGET_ARCH
+#elif x86_64_TARGET_ARCH
+-- Generates:
+-- jmpq *.L1(%rip)
+-- .align 8
+-- .L1:
+-- .quad <addr>
+--
+-- We need a full 64-bit pointer (we can't assume the info table is
+-- allocated in low memory). Assuming the info pointer is aligned to
+-- an 8-byte boundary, the addr will also be aligned.
+
+type ItblCode = Word8
+mkJumpToAddr a
+ = let w64 = fromIntegral (ptrToInt a) :: Word64
+ insnBytes :: [Word8]
+ insnBytes
+ = [0xff, 0x25, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
+ byte0 w64, byte1 w64, byte2 w64, byte3 w64,
+ byte4 w64, byte5 w64, byte6 w64, byte7 w64]
+ in
+ insnBytes
+
+#elif alpha_TARGET_ARCH
type ItblCode = Word32
mkJumpToAddr a
= [ 0xc3800000 -- br at, .+4
, 0x47ff041f -- nop
, fromIntegral (w64 .&. 0x0000FFFF)
, fromIntegral ((w64 `shiftR` 32) .&. 0x0000FFFF) ]
- where w64 = fromIntegral (addrToInt a) :: Word64
+ where w64 = fromIntegral (ptrToInt a) :: Word64
+
+#else
+type ItblCode = Word32
+mkJumpToAddr a
+ = undefined
#endif
-byte :: Int -> Word32 -> Word8
-byte 0 w = fromIntegral (w .&. 0xFF)
-byte 1 w = fromIntegral ((w `shiftR` 8) .&. 0xFF)
-byte 2 w = fromIntegral ((w `shiftR` 16) .&. 0xFF)
-byte 3 w = fromIntegral ((w `shiftR` 24) .&. 0xFF)
+byte0, byte1, byte2, byte3, byte4, byte5, byte6, byte7
+ :: (Integral w, Bits w) => w -> Word8
+byte0 w = fromIntegral w
+byte1 w = fromIntegral (w `shiftR` 8)
+byte2 w = fromIntegral (w `shiftR` 16)
+byte3 w = fromIntegral (w `shiftR` 24)
+byte4 w = fromIntegral (w `shiftR` 32)
+byte5 w = fromIntegral (w `shiftR` 40)
+byte6 w = fromIntegral (w `shiftR` 48)
+byte7 w = fromIntegral (w `shiftR` 56)
vecret_entry 0 = stg_interp_constr1_entry
vecret_entry 6 = stg_interp_constr7_entry
vecret_entry 7 = stg_interp_constr8_entry
+#ifndef __HADDOCK__
-- entry point for direct returns for created constr itbls
-foreign label "stg_interp_constr_entry" stg_interp_constr_entry :: Addr
+foreign import ccall "&stg_interp_constr_entry" stg_interp_constr_entry :: Ptr ()
-- and the 8 vectored ones
-foreign label "stg_interp_constr1_entry" stg_interp_constr1_entry :: Addr
-foreign label "stg_interp_constr2_entry" stg_interp_constr2_entry :: Addr
-foreign label "stg_interp_constr3_entry" stg_interp_constr3_entry :: Addr
-foreign label "stg_interp_constr4_entry" stg_interp_constr4_entry :: Addr
-foreign label "stg_interp_constr5_entry" stg_interp_constr5_entry :: Addr
-foreign label "stg_interp_constr6_entry" stg_interp_constr6_entry :: Addr
-foreign label "stg_interp_constr7_entry" stg_interp_constr7_entry :: Addr
-foreign label "stg_interp_constr8_entry" stg_interp_constr8_entry :: Addr
-
+foreign import ccall "&stg_interp_constr1_entry" stg_interp_constr1_entry :: Ptr ()
+foreign import ccall "&stg_interp_constr2_entry" stg_interp_constr2_entry :: Ptr ()
+foreign import ccall "&stg_interp_constr3_entry" stg_interp_constr3_entry :: Ptr ()
+foreign import ccall "&stg_interp_constr4_entry" stg_interp_constr4_entry :: Ptr ()
+foreign import ccall "&stg_interp_constr5_entry" stg_interp_constr5_entry :: Ptr ()
+foreign import ccall "&stg_interp_constr6_entry" stg_interp_constr6_entry :: Ptr ()
+foreign import ccall "&stg_interp_constr7_entry" stg_interp_constr7_entry :: Ptr ()
+foreign import ccall "&stg_interp_constr8_entry" stg_interp_constr8_entry :: Ptr ()
+#endif
load = do addr <- advance
lift (peek addr)
+foreign import ccall unsafe "stgMallocBytesRWX"
+ _stgMallocBytesRWX :: CInt -> IO (Ptr a)
+
+malloc_exec :: Int -> IO (Ptr a)
+malloc_exec bytes = _stgMallocBytesRWX (fromIntegral bytes)
+
\end{code}
projects / ghc-hetmet.git / blobdiff