import CoreSyn
-import DsCCall ( dsCCall, mkCCall, boxResult, unboxArg )
+import DsCCall ( dsCCall, mkFCall, boxResult, unboxArg, resultWrapper )
import DsMonad
-import DsUtils
-import HsSyn ( ExtName(..), ForeignDecl(..), isDynamicExtName, ForKind(..) )
-import HsDecls ( extNameStatic )
-import CallConv
+import HsSyn ( ForeignDecl(..), ForeignExport(..),
+ ForeignImport(..), CImportSpec(..) )
import TcHsSyn ( TypecheckedForeignDecl )
import CoreUtils ( exprType, mkInlineMe )
-import DataCon ( DataCon, dataConWrapId )
-import Id ( Id, idType, idName, mkWildId, mkVanillaId )
-import MkId ( mkWorkerId )
+import Id ( Id, idType, idName, mkVanillaGlobal, mkSysLocal,
+ setInlinePragma )
+import IdInfo ( vanillaIdInfo )
import Literal ( Literal(..) )
import Module ( Module, moduleUserString )
import Name ( mkGlobalName, nameModule, nameOccName, getOccString,
mkForeignExportOcc, isLocalName,
- NamedThing(..), Provenance(..), ExportFlag(..)
+ NamedThing(..),
)
-import PrelInfo ( deRefStablePtr_NAME, returnIO_NAME, bindIO_NAME, makeStablePtr_NAME )
-import Type ( unUsgTy,
- splitTyConApp_maybe, splitFunTys, splitForAllTys,
- Type, mkFunTys, mkForAllTys, mkTyConApp,
- mkTyVarTy, mkFunTy, splitAppTy, applyTy, funResultTy
+import Type ( repType, eqType )
+import TcType ( Type, mkFunTys, mkForAllTys, mkTyConApp,
+ mkFunTy, applyTy,
+ tcSplitForAllTys, tcSplitFunTys, tcTyConAppArgs,
+ tcSplitTyConApp_maybe, tcSplitAppTy,
+ tcFunResultTy
)
-import PrimOp ( PrimOp(..), CCall(..), CCallTarget(..) )
-import Var ( TyVar )
-import TysPrim ( realWorldStatePrimTy, addrPrimTy )
-import TysWiredIn ( unitTy, addrTy, stablePtrTyCon,
- unboxedTupleCon, addrDataCon
+
+import ForeignCall ( ForeignCall(..), CCallSpec(..),
+ Safety(..), playSafe,
+ CExportSpec(..),
+ CCallConv(..), ccallConvToInt
+ )
+import CStrings ( CLabelString )
+import TysWiredIn ( addrTy, unitTy, stablePtrTyCon )
+import TysPrim ( addrPrimTy )
+import PrelNames ( hasKey, ioTyConKey, deRefStablePtrName, newStablePtrName,
+ bindIOName, returnIOName
)
-import Unique
-import Maybes ( maybeToBool )
+import BasicTypes ( Activation( NeverActive ) )
+import ErrUtils ( addShortWarnLocLine )
import Outputable
+import Maybe ( fromJust )
\end{code}
Desugaring of @foreign@ declarations is naturally split up into
so we reuse the desugaring code in @DsCCall@ to deal with these.
\begin{code}
+type Binding = (Id, CoreExpr) -- No rec/nonrec structure;
+ -- the occurrence analyser will sort it all out
+
dsForeigns :: Module
-> [TypecheckedForeignDecl]
- -> DsM ( [CoreBind] -- desugared foreign imports
- , [CoreBind] -- helper functions for foreign exports
+ -> DsM ( [Id] -- Foreign-exported binders;
+ -- we have to generate code to register these
+ , [Binding]
, SDoc -- Header file prototypes for
-- "foreign exported" functions.
, SDoc -- C stubs to use when calling
-- "foreign exported" functions.
+ , [FAST_STRING] -- headers that need to be included
+ -- into C code generated for this module
)
-dsForeigns mod_name fos = foldlDs combine ([],[],empty,empty) fos
+dsForeigns mod_name fos
+ = foldlDs combine ([], [], empty, empty, []) fos
where
- combine (acc_fi, acc_fe, acc_h, acc_c) fo@(ForeignDecl i imp_exp _ ext_nm cconv _)
- | isForeignImport = -- foreign import (dynamic)?
- dsFImport i (idType i) uns ext_nm cconv `thenDs` \ bs ->
- returnDs (bs ++ acc_fi, acc_fe, acc_h, acc_c)
- | isForeignLabel =
- dsFLabel i ext_nm `thenDs` \ b ->
- returnDs (b:acc_fi, acc_fe, acc_h, acc_c)
- | isDynamicExtName ext_nm =
- dsFExportDynamic i (idType i) mod_name ext_nm cconv `thenDs` \ (fi,fe,h,c) ->
- returnDs (fi:acc_fi, fe:acc_fe, h $$ acc_h, c $$ acc_c)
-
- | otherwise = -- foreign export
- dsFExport i (idType i) mod_name ext_nm cconv False `thenDs` \ (fe,h,c) ->
- returnDs (acc_fi, fe:acc_fe, h $$ acc_h, c $$ acc_c)
+ combine (acc_feb, acc_f, acc_h, acc_c, acc_header)
+ (ForeignImport id _ spec depr loc)
+ = dsFImport mod_name id spec `thenDs` \(bs, h, c, hd) ->
+ warnDepr depr loc `thenDs` \_ ->
+ returnDs (acc_feb, bs ++ acc_f, h $$ acc_h, c $$ acc_c, hd ++ acc_header)
+
+ combine (acc_feb, acc_f, acc_h, acc_c, acc_header)
+ (ForeignExport id _ (CExport (CExportStatic ext_nm cconv)) depr loc)
+ = dsFExport mod_name id (idType id)
+ ext_nm cconv False `thenDs` \(feb, b, h, c) ->
+ warnDepr depr loc `thenDs` \_ ->
+ returnDs (feb:acc_feb, b : acc_f, h $$ acc_h, c $$ acc_c, acc_header)
+
+ warnDepr False _ = returnDs ()
+ warnDepr True loc = dsWarn (addShortWarnLocLine loc msg)
where
- isForeignImport =
- case imp_exp of
- FoImport _ -> True
- _ -> False
-
- isForeignLabel =
- case imp_exp of
- FoLabel -> True
- _ -> False
+ msg = ptext SLIT("foreign declaration uses deprecated non-standard syntax")
+\end{code}
- (FoImport uns) = imp_exp
-\end{code}
+%************************************************************************
+%* *
+\subsection{Foreign import}
+%* *
+%************************************************************************
Desugaring foreign imports is just the matter of creating a binding
that on its RHS unboxes its arguments, performs the external call
The strictness/CPR analyser won't do this automatically because it doesn't look
inside returned tuples; but inlining this wrapper is a Really Good Idea
because it exposes the boxing to the call site.
-
\begin{code}
-dsFImport :: Id
- -> Type -- Type of foreign import.
- -> Bool -- True <=> might cause Haskell GC
- -> ExtName
- -> CallConv
- -> DsM [CoreBind]
-dsFImport fn_id ty may_not_gc ext_name cconv
+dsFImport :: Module
+ -> Id
+ -> ForeignImport
+ -> DsM ([Binding], SDoc, SDoc, [FAST_STRING])
+dsFImport modName id (CImport cconv safety header lib spec) =
+ dsCImport modName id spec cconv safety `thenDs` \(ids, h, c) ->
+ returnDs (ids, h, c, if _NULL_ header then [] else [header])
+ -- FIXME: the `lib' field is needed for .NET ILX generation when invoking
+ -- routines that are external to the .NET runtime, but GHC doesn't
+ -- support such calls yet; if `_NULL_ lib', the value was not given
+dsFImport modName id (DNImport spec) =
+ dsFCall modName id (DNCall spec) `thenDs` \(ids, h, c) ->
+ returnDs (ids, h, c, [])
+
+dsCImport :: Module
+ -> Id
+ -> CImportSpec
+ -> CCallConv
+ -> Safety
+ -> DsM ([Binding], SDoc, SDoc)
+dsCImport modName id (CLabel cid) _ _ =
+ ASSERT(fromJust res_ty `eqType` addrPrimTy) -- typechecker ensures this
+ returnDs ([(id, rhs)], empty, empty)
+ where
+ (resTy, foRhs) = resultWrapper (idType id)
+ rhs = foRhs (mkLit (MachLabel cid))
+dsCImport modName id (CFunction target) cconv safety =
+ dsFCall modName id (CCall (CCallSpec target cconv safety))
+dsCImport modName id CWrapper cconv _ =
+ dsFExportDynamic modName id cconv
+\end{code}
+
+
+%************************************************************************
+%* *
+\subsection{Foreign calls}
+%* *
+%************************************************************************
+
+\begin{code}
+dsFCall mod_Name fn_id fcall
= let
- (tvs, fun_ty) = splitForAllTys ty
- (arg_tys, io_res_ty) = splitFunTys fun_ty
+ ty = idType fn_id
+ (tvs, fun_ty) = tcSplitForAllTys ty
+ (arg_tys, io_res_ty) = tcSplitFunTys fun_ty
+ -- Must use tcSplit* functions because we want to
+ -- see that (IO t) in the corner
in
newSysLocalsDs arg_tys `thenDs` \ args ->
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 ->
+ let
+ work_arg_ids = [v | Var v <- val_args] -- All guaranteed to be vars
+
+ -- These are the ids we pass to boxResult, which are used to decide
+ -- whether to touch# an argument after the call (used to keep
+ -- ForeignObj#s live across a 'safe' foreign import).
+ maybe_arg_ids | unsafe_call fcall = work_arg_ids
+ | otherwise = []
+ in
+ boxResult maybe_arg_ids io_res_ty `thenDs` \ (ccall_result_ty, res_wrapper) ->
- getUniqueDs `thenDs` \ ccall_uniq ->
- getUniqueDs `thenDs` \ work_uniq ->
+ getUniqueDs `thenDs` \ ccall_uniq ->
+ getUniqueDs `thenDs` \ work_uniq ->
let
-- 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)
- the_ccall = CCall lbl False (not may_not_gc) cconv
- the_ccall_app = mkCCall ccall_uniq the_ccall val_args ccall_result_ty
+ the_ccall_app = mkFCall ccall_uniq fcall val_args ccall_result_ty
work_rhs = mkLams tvs (mkLams work_arg_ids the_ccall_app)
- work_id = mkWorkerId work_uniq fn_id worker_ty
+ work_id = mkSysLocal SLIT("$wccall") work_uniq worker_ty
-- Build the wrapper
work_app = mkApps (mkVarApps (Var work_id) tvs) val_args
wrapper_body = foldr ($) (res_wrapper work_app) arg_wrappers
wrap_rhs = mkInlineMe (mkLams (tvs ++ args) wrapper_body)
in
- returnDs [NonRec fn_id wrap_rhs, NonRec work_id work_rhs]
+ returnDs ([(work_id, work_rhs), (fn_id, wrap_rhs)], empty, empty)
+
+unsafe_call (CCall (CCallSpec _ _ safety)) = playSafe safety
+unsafe_call (DNCall _) = False
\end{code}
-Foreign labels
-\begin{code}
-dsFLabel :: Id -> ExtName -> DsM CoreBind
-dsFLabel nm ext_name = returnDs (NonRec nm fo_rhs)
- where
- fo_rhs = mkConApp addrDataCon [mkLit (MachLitLit enm addrPrimTy)]
- enm = extNameStatic ext_name
-\end{code}
+%************************************************************************
+%* *
+\subsection{Foreign export}
+%* *
+%************************************************************************
The function that does most of the work for `@foreign export@' declarations.
(see below for the boilerplate code a `@foreign export@' declaration expands
the user-written Haskell function `@M.foo@'.
\begin{code}
-dsFExport :: Id
- -> Type -- Type of foreign export.
- -> Module
- -> ExtName
- -> CallConv
- -> Bool -- True => invoke IO action that's hanging off
- -- the first argument's stable pointer
- -> DsM ( CoreBind
+dsFExport :: Module
+ -> Id -- Either the exported Id,
+ -- or the foreign-export-dynamic constructor
+ -> Type -- The type of the thing callable from C
+ -> CLabelString -- The name to export to C land
+ -> CCallConv
+ -> Bool -- True => foreign export dynamic
+ -- so invoke IO action that's hanging off
+ -- the first argument's stable pointer
+ -> DsM ( Id -- The foreign-exported Id
+ , Binding
, SDoc
, SDoc
)
-dsFExport i ty mod_name ext_name cconv isDyn
+dsFExport mod_name fn_id ty ext_name cconv isDyn
= -- BUILD THE returnIO WRAPPER, if necessary
-- Look at the result type of the exported function, orig_res_ty
-- If it's IO t, return (\x.x, IO t, t)
-- If it's plain t, return (\x.returnIO x, IO t, t)
- (case splitTyConApp_maybe orig_res_ty of
+ (case tcSplitTyConApp_maybe orig_res_ty of
+ -- We must use tcSplit here so that we see the (IO t) in
+ -- the type. [IO t is transparent to plain splitTyConApp.]
+
Just (ioTyCon, [res_ty])
- -> ASSERT( getUnique ioTyCon == ioTyConKey )
+ -> ASSERT( ioTyCon `hasKey` ioTyConKey )
-- The function already returns IO t
returnDs (\body -> body, orig_res_ty, res_ty)
other -> -- The function returns t, so wrap the call in returnIO
- dsLookupGlobalValue returnIO_NAME `thenDs` \ retIOId ->
+ dsLookupGlobalValue returnIOName `thenDs` \ retIOId ->
returnDs (\body -> mkApps (Var retIOId) [Type orig_res_ty, body],
- funResultTy (applyTy (idType retIOId) orig_res_ty),
+ tcFunResultTy (applyTy (idType retIOId) orig_res_ty),
-- We don't have ioTyCon conveniently to hand
orig_res_ty)
(if isDyn then
newSysLocalDs stbl_ptr_ty `thenDs` \ stbl_ptr ->
newSysLocalDs stbl_ptr_to_ty `thenDs` \ stbl_value ->
- dsLookupGlobalValue deRefStablePtr_NAME `thenDs` \ deRefStablePtrId ->
+ dsLookupGlobalValue deRefStablePtrName `thenDs` \ deRefStablePtrId ->
+ dsLookupGlobalValue bindIOName `thenDs` \ bindIOId ->
let
the_deref_app = mkApps (Var deRefStablePtrId)
[ Type stbl_ptr_to_ty, Var stbl_ptr ]
- in
- dsLookupGlobalValue bindIO_NAME `thenDs` \ bindIOId ->
- let
+
stbl_app cont = mkApps (Var bindIOId)
[ Type stbl_ptr_to_ty
, Type res_ty
in
returnDs (stbl_value, stbl_app, stbl_ptr)
else
- returnDs (i,
+ returnDs (fn_id,
\ body -> body,
panic "stbl_ptr" -- should never be touched.
)) `thenDs` \ (i, getFun_wrapper, stbl_ptr) ->
helper_ty = mkForAllTys tvs $
mkFunTys wrapper_arg_tys io_res_ty
- f_helper_glob = mkVanillaId helper_name helper_ty
+ f_helper_glob = mkVanillaGlobal helper_name helper_ty vanillaIdInfo
where
- name = idName i
+ name = idName fn_id
mod
| isLocalName name = mod_name
| otherwise = nameModule name
occ = mkForeignExportOcc (nameOccName name)
- prov = LocalDef src_loc Exported
- helper_name = mkGlobalName uniq mod occ prov
+ helper_name = mkGlobalName uniq mod occ src_loc
the_app = getFun_wrapper (return_io_wrapper (mkVarApps (Var i) (tvs ++ fe_args)))
the_body = mkLams (tvs ++ wrapper_args) the_app
- c_nm = extNameStatic ext_name
(h_stub, c_stub) = fexportEntry (moduleUserString mod)
- c_nm f_helper_glob
- wrapper_arg_tys res_ty cconv isDyn
+ ext_name f_helper_glob
+ wrapper_arg_tys res_ty cconv isDyn
in
- returnDs (NonRec f_helper_glob the_body, h_stub, c_stub)
+ returnDs (f_helper_glob, (f_helper_glob, the_body), h_stub, c_stub)
where
- (tvs,sans_foralls) = splitForAllTys ty
- (fe_arg_tys', orig_res_ty) = splitFunTys sans_foralls
-
- (_, stbl_ptr_ty') = splitForAllTys stbl_ptr_ty
- (_, stbl_ptr_to_ty) = splitAppTy stbl_ptr_ty'
+ (tvs,sans_foralls) = tcSplitForAllTys ty
+ (fe_arg_tys', orig_res_ty) = tcSplitFunTys sans_foralls
+ -- We must use tcSplits here, because we want to see
+ -- the (IO t) in the corner of the type!
fe_arg_tys | isDyn = tail fe_arg_tys'
| otherwise = fe_arg_tys'
stbl_ptr_ty | isDyn = head fe_arg_tys'
| otherwise = error "stbl_ptr_ty"
+
+ (_, stbl_ptr_ty') = tcSplitForAllTys stbl_ptr_ty
+ (_, stbl_ptr_to_ty) = tcSplitAppTy stbl_ptr_ty'
+ -- Again, stable pointers are just newtypes,
+ -- so we must see them! Hence tcSplit*
\end{code}
@foreign export dynamic@ lets you dress up Haskell IO actions
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 (newStablePtr 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
\end{verbatim}
\begin{code}
-dsFExportDynamic :: Id
- -> Type -- Type of foreign export.
- -> Module
- -> ExtName
- -> CallConv
- -> DsM (CoreBind, CoreBind, SDoc, SDoc)
-dsFExportDynamic i ty mod_name ext_name cconv =
- newSysLocalDs ty `thenDs` \ fe_id ->
+dsFExportDynamic :: Module
+ -> Id
+ -> CCallConv
+ -> DsM ([Binding], SDoc, SDoc)
+dsFExportDynamic mod_name id cconv
+ = newSysLocalDs ty `thenDs` \ fe_id ->
let
-- hack: need to get at the name of the C stub we're about to generate.
- fe_nm = toCName fe_id
- fe_ext_name = ExtName (_PK_ fe_nm) Nothing
+ fe_nm = _PK_ (moduleUserString mod_name ++ "_" ++ toCName fe_id)
in
- dsFExport i export_ty mod_name fe_ext_name cconv True
- `thenDs` \ (fe@(NonRec fe_helper fe_expr), h_code, c_code) ->
- newSysLocalDs arg_ty `thenDs` \ cback ->
- dsLookupGlobalValue makeStablePtr_NAME `thenDs` \ makeStablePtrId ->
+ dsFExport mod_name id export_ty fe_nm cconv True `thenDs` \ (feb, fe, h_code, c_code) ->
+ newSysLocalDs arg_ty `thenDs` \ cback ->
+ dsLookupGlobalValue newStablePtrName `thenDs` \ newStablePtrId ->
let
- mk_stbl_ptr_app = mkApps (Var makeStablePtrId) [ Type arg_ty, Var cback ]
+ mk_stbl_ptr_app = mkApps (Var newStablePtrId) [ Type arg_ty, Var cback ]
in
- dsLookupGlobalValue bindIO_NAME `thenDs` \ bindIOId ->
+ dsLookupGlobalValue bindIOName `thenDs` \ bindIOId ->
newSysLocalDs (mkTyConApp stablePtrTyCon [arg_ty]) `thenDs` \ stbl_value ->
let
stbl_app cont ret_ty
to be entered using an external calling convention
(stdcall, ccall).
-}
- adj_args = [ mkIntLitInt (callConvToInt cconv)
+ adj_args = [ mkIntLitInt (ccallConvToInt cconv)
, Var stbl_value
- , mkLit (MachLitLit (_PK_ fe_nm) addrPrimTy)
+ , mkLit (MachLabel fe_nm)
]
-- name of external entry point providing these services.
-- (probably in the RTS.)
adjustor = SLIT("createAdjustor")
in
- dsCCall adjustor adj_args False False ioAddrTy `thenDs` \ ccall_adj ->
+ dsCCall adjustor adj_args PlayRisky False io_res_ty `thenDs` \ ccall_adj ->
+ -- PlayRisky: the adjustor doesn't allocate in the Haskell heap or do a callback
let ccall_adj_ty = exprType ccall_adj
ccall_io_adj = mkLams [stbl_value] $
- Note (Coerce io_res_ty (unUsgTy ccall_adj_ty))
+ Note (Coerce io_res_ty ccall_adj_ty)
ccall_adj
- in
- let io_app = mkLams tvs $
+ io_app = mkLams tvs $
mkLams [cback] $
- stbl_app ccall_io_adj addrTy
+ stbl_app ccall_io_adj res_ty
+ fed = (id `setInlinePragma` NeverActive, io_app)
+ -- Never inline the f.e.d. function, because the litlit
+ -- might not be in scope in other modules.
in
- returnDs (NonRec i io_app, fe, h_code, c_code)
+ returnDs ([fed, fe], h_code, c_code)
where
- (tvs,sans_foralls) = splitForAllTys ty
- ([arg_ty], io_res_ty) = splitFunTys sans_foralls
-
- Just (ioTyCon, [res_ty]) = splitTyConApp_maybe io_res_ty
-
- export_ty = mkFunTy (mkTyConApp stablePtrTyCon [arg_ty]) arg_ty
-
- ioAddrTy :: Type -- IO Addr
- ioAddrTy = mkTyConApp ioTyCon [addrTy]
+ ty = idType id
+ (tvs,sans_foralls) = tcSplitForAllTys ty
+ ([arg_ty], io_res_ty) = tcSplitFunTys sans_foralls
+ [res_ty] = tcTyConAppArgs io_res_ty
+ -- Must use tcSplit* to see the (IO t), which is a newtype
+ export_ty = mkFunTy (mkTyConApp stablePtrTyCon [arg_ty]) arg_ty
toCName :: Id -> String
toCName i = showSDoc (pprCode CStyle (ppr (idName i)))
-> Id
-> [Type]
-> Type
- -> CallConv
+ -> CCallConv
-> Bool
-> (SDoc, SDoc)
fexportEntry mod_nm c_nm helper args res_ty cc isDyn = (header_bits, c_bits)
-- create the application + perform it.
, text "rc=rts_evalIO" <>
parens (foldl appArg (text "(StgClosure*)&" <> h_nm) (zip args c_args) <> comma <> text "&ret") <> semi
- , text "rts_checkSchedStatus" <> parens (doubleQuotes (text mod_nm <> char '.' <> ptext c_nm)
+ , text "rts_checkSchedStatus" <> parens (doubleQuotes (ptext c_nm)
<> comma <> text "rc") <> semi
, text "return" <> return_what <> semi
, rbrace
cParamTypes = map showStgType real_args
- res_ty_is_unit = res_ty == unitTy
+ res_ty_is_unit = res_ty `eqType` unitTy -- Look through any newtypes
cResType | res_ty_is_unit = text "void"
| otherwise = showStgType res_ty
- pprCconv
- | cc == cCallConv = empty
- | otherwise = pprCallConv cc
+ pprCconv = case cc of
+ CCallConv -> empty
+ StdCallConv -> ppr cc
declareResult = text "HaskellObj ret;"
needed by the Adjustor.c code to get the stack cleanup right.
-}
(proto_args, real_args)
- | cc == cCallConv && isDyn = ( text "a0" : text "a_" : mkCArgNames 1 (tail args)
- , head args : addrTy : tail args)
- | otherwise = (mkCArgNames 0 args, args)
+ = case cc of
+ CCallConv | isDyn -> ( text "a0" : text "a_" : mkCArgNames 1 (tail args)
+ , head args : addrTy : tail args)
+ other -> (mkCArgNames 0 args, args)
mkCArgNames :: Int -> [a] -> [SDoc]
mkCArgNames n as = zipWith (\ _ n -> text ('a':show n)) as [n..]
unpackHObj t = text "rts_get" <> text (showFFIType t)
showStgType :: Type -> SDoc
-showStgType t = text "Stg" <> text (showFFIType t)
+showStgType t = text "Hs" <> text (showFFIType t)
showFFIType :: Type -> String
showFFIType t = getOccString (getName tc)
where
- tc = case splitTyConApp_maybe t of
+ tc = case tcSplitTyConApp_maybe (repType t) of
Just (tc,_) -> tc
Nothing -> pprPanic "showFFIType" (ppr t)
\end{code}
projects / ghc-hetmet.git / blobdiff