import TcHsSyn ( TypecheckedForeignDecl )
import CoreUtils ( exprType, mkInlineMe )
import DataCon ( DataCon, dataConWrapId )
-import Id ( Id, idType, idName, mkWildId, mkVanillaId, mkSysLocal )
+import Id ( Id, idType, idName, mkWildId, mkVanillaId, mkSysLocal,
+ setInlinePragma )
+import IdInfo ( neverInlinePrag )
import MkId ( mkWorkerId )
import Literal ( Literal(..) )
import Module ( Module, moduleUserString )
mkTyVarTy, mkFunTy, splitAppTy, applyTy, funResultTy
)
import PprType ( {- instance Outputable Type -} )
-import PrimOp ( PrimOp(..), CCall(..), CCallTarget(..) )
+import PrimOp ( PrimOp(..), CCall(..), CCallTarget(..), dynamicTarget )
import Var ( TyVar )
import TysPrim ( realWorldStatePrimTy, addrPrimTy )
import TysWiredIn ( unitTy, addrTy, stablePtrTyCon,
mapAndUnzipDs unboxArg (map Var args) `thenDs` \ (val_args, arg_wrappers) ->
boxResult io_res_ty `thenDs` \ (ccall_result_ty, res_wrapper) ->
- (case ext_name of
- Dynamic -> getUniqueDs `thenDs` \ u ->
- returnDs (DynamicTarget u)
- ExtName fs _ -> returnDs (StaticTarget fs)) `thenDs` \ lbl ->
-
getUniqueDs `thenDs` \ ccall_uniq ->
getUniqueDs `thenDs` \ work_uniq ->
let
+ lbl = case ext_name of
+ Dynamic -> dynamicTarget
+ ExtName fs _ -> StaticTarget fs
+
-- Build the worker
work_arg_ids = [v | Var v <- val_args] -- All guaranteed to be vars
worker_ty = mkForAllTys tvs (mkFunTys (map idType work_arg_ids) ccall_result_ty)
dsFLabel :: Id -> ExtName -> DsM CoreBind
dsFLabel nm ext_name = returnDs (NonRec nm fo_rhs)
where
- fo_rhs = mkConApp addrDataCon [mkLit (MachLitLit enm addrPrimTy)]
+ fo_rhs = mkConApp addrDataCon [mkLit (MachLitLit addr addrPrimTy)]
enm = extNameStatic ext_name
+ addr = SLIT("(&") _APPEND_ enm _APPEND_ SLIT(")")
\end{code}
The function that does most of the work for `@foreign export@' declarations.
as a C function pointer). Useful for callbacks and stuff.
\begin{verbatim}
-foreign export stdcall f :: (Addr -> Int -> IO Int) -> IO Addr
+foreign export dynamic f :: (Addr -> Int -> IO Int) -> IO Addr
--- Haskell-visible constructor, which is generated from the
--- above:
+-- Haskell-visible constructor, which is generated from the above:
+-- SUP: No check for NULL from createAdjustor anymore???
f :: (Addr -> Int -> IO Int) -> IO Addr
-f cback = IO ( \ s1# ->
- case makeStablePtr# cback s1# of { StateAndStablePtr# s2# sp# ->
- case _ccall_ "mkAdjustor" sp# ``f_helper'' s2# of
- StateAndAddr# s3# a# ->
- case addr2Int# a# of
- 0# -> IOfail s# err
- _ ->
- let
- a :: Addr
- a = A# a#
- in
- IOok s3# a)
+f cback =
+ bindIO (makeStablePtr cback)
+ (\StablePtr sp# -> IO (\s1# ->
+ case _ccall_ createAdjustor cconv sp# ``f_helper'' s1# of
+ (# s2#, a# #) -> (# s2#, A# a# #)))
foreign export "f_helper" f_helper :: StablePtr (Addr -> Int -> IO Int) -> Addr -> Int -> IO Int
-- `special' foreign export that invokes the closure pointed to by the
mkLams [cback] $
stbl_app ccall_io_adj addrTy
in
- returnDs (NonRec i io_app, fe, h_code, c_code)
+ -- Never inline the f.e.d. function, because the litlit might not be in scope
+ -- in other modules.
+ returnDs (NonRec (i `setInlinePragma` neverInlinePrag) io_app, fe, h_code, c_code)
where
(tvs,sans_foralls) = splitForAllTys ty