X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2FdeSugar%2FDsForeign.lhs;h=269274ce5a3c62fea9fb0c315f827ad7b8f21d74;hb=423d477bfecd490de1449c59325c8776f91d7aac;hp=9cefb058204d29f008bd495718cfe9eccfeb47b9;hpb=6da624257303de84702e5e1e17adcafb0b82731c;p=ghc-hetmet.git diff --git a/ghc/compiler/deSugar/DsForeign.lhs b/ghc/compiler/deSugar/DsForeign.lhs index 9cefb05..269274c 100644 --- a/ghc/compiler/deSugar/DsForeign.lhs +++ b/ghc/compiler/deSugar/DsForeign.lhs @@ -9,15 +9,17 @@ Expanding out @foreign import@ and @foreign export@ declarations. module DsForeign ( dsForeigns ) where #include "HsVersions.h" +import TcRnMonad -- temp import CoreSyn import DsCCall ( dsCCall, mkFCall, boxResult, unboxArg, resultWrapper ) import DsMonad -import HsSyn ( ForeignDecl(..), ForeignExport(..), +import HsSyn ( ForeignDecl(..), ForeignExport(..), LForeignDecl, ForeignImport(..), CImportSpec(..) ) -import TcHsSyn ( TypecheckedForeignDecl ) +import MachOp ( machRepByteWidth ) +import SMRep ( argMachRep, primRepToCgRep ) import CoreUtils ( exprType, mkInlineMe ) import Id ( Id, idType, idName, mkSysLocal, setInlinePragma ) import Literal ( Literal(..) ) @@ -30,19 +32,20 @@ import TcType ( Type, mkFunTys, mkForAllTys, mkTyConApp, tcSplitForAllTys, tcSplitFunTys, tcTyConAppArgs, ) +import BasicTypes ( Boxity(..) ) import HscTypes ( ForeignStubs(..) ) import ForeignCall ( ForeignCall(..), CCallSpec(..), Safety(..), playSafe, - CExportSpec(..), + CExportSpec(..), CLabelString, CCallConv(..), ccallConvToInt, ccallConvAttribute ) -import CStrings ( CLabelString ) -import TysWiredIn ( unitTy, stablePtrTyCon ) +import TysWiredIn ( unitTy, tupleTyCon ) import TysPrim ( addrPrimTy, mkStablePtrPrimTy, alphaTy ) -import PrimRep ( getPrimRepSizeInBytes ) -import PrelNames ( hasKey, ioTyConKey, newStablePtrName, bindIOName ) +import PrelNames ( hasKey, ioTyConKey, stablePtrTyConName, newStablePtrName, bindIOName, + checkDotnetResName ) import BasicTypes ( Activation( NeverActive ) ) +import SrcLoc ( Located(..), unLoc ) import Outputable import Maybe ( fromJust ) import FastString @@ -65,7 +68,7 @@ so we reuse the desugaring code in @DsCCall@ to deal with these. type Binding = (Id, CoreExpr) -- No rec/nonrec structure; -- the occurrence analyser will sort it all out -dsForeigns :: [TypecheckedForeignDecl] +dsForeigns :: [LForeignDecl Id] -> DsM (ForeignStubs, [Binding]) dsForeigns [] = returnDs (NoStubs, []) @@ -73,9 +76,11 @@ dsForeigns fos = foldlDs combine (ForeignStubs empty empty [] [], []) fos where combine (ForeignStubs acc_h acc_c acc_hdrs acc_feb, acc_f) - (ForeignImport id _ spec depr loc) - = dsFImport id spec `thenDs` \ (bs, h, c, mbhd) -> + (L loc (ForeignImport id _ spec depr)) + = traceIf (text "fi start" <+> ppr id) `thenDs` \ _ -> + dsFImport (unLoc id) spec `thenDs` \ (bs, h, c, mbhd) -> warnDepr depr loc `thenDs` \ _ -> + traceIf (text "fi end" <+> ppr id) `thenDs` \ _ -> returnDs (ForeignStubs (h $$ acc_h) (c $$ acc_c) (addH mbhd acc_hdrs) @@ -83,7 +88,7 @@ dsForeigns fos bs ++ acc_f) combine (ForeignStubs acc_h acc_c acc_hdrs acc_feb, acc_f) - (ForeignExport id _ (CExport (CExportStatic ext_nm cconv)) depr loc) + (L loc (ForeignExport (L _ id) _ (CExport (CExportStatic ext_nm cconv)) depr)) = dsFExport id (idType id) ext_nm cconv False `thenDs` \(h, c, _) -> warnDepr depr loc `thenDs` \_ -> @@ -97,8 +102,8 @@ dsForeigns fos warnDepr False _ = returnDs () warnDepr True loc = dsWarn (loc, msg) - where - msg = ptext SLIT("foreign declaration uses deprecated non-standard syntax") + where + msg = ptext SLIT("foreign declaration uses deprecated non-standard syntax") \end{code} @@ -150,11 +155,10 @@ dsCImport :: Id -> Bool -- True <=> no headers in the f.i decl -> DsM ([Binding], SDoc, SDoc) dsCImport id (CLabel cid) _ _ no_hdrs - = ASSERT(fromJust resTy `eqType` addrPrimTy) -- typechecker ensures this - returnDs ([(setImpInline no_hdrs id, rhs)], empty, empty) - where - (resTy, foRhs) = resultWrapper (idType id) - rhs = foRhs (mkLit (MachLabel cid Nothing)) + = resultWrapper (idType id) `thenDs` \ (resTy, foRhs) -> + ASSERT(fromJust resTy `eqType` addrPrimTy) -- typechecker ensures this + let rhs = foRhs (mkLit (MachLabel cid Nothing)) in + returnDs ([(setImpInline no_hdrs id, rhs)], empty, empty) dsCImport id (CFunction target) cconv safety no_hdrs = dsFCall id (CCall (CCallSpec target cconv safety)) no_hdrs dsCImport id CWrapper cconv _ _ @@ -204,11 +208,37 @@ dsFCall fn_id fcall no_hdrs -- ForeignObj#s live across a 'safe' foreign import). maybe_arg_ids | unsafe_call fcall = work_arg_ids | otherwise = [] + + forDotnet = + case fcall of + DNCall{} -> True + _ -> False + + topConDs + | forDotnet = + dsLookupGlobalId checkDotnetResName `thenDs` \ check_id -> + return (Just check_id) + | otherwise = return Nothing + + augmentResultDs + | forDotnet = + newSysLocalDs addrPrimTy `thenDs` \ err_res -> + returnDs (\ (mb_res_ty, resWrap) -> + case mb_res_ty of + Nothing -> (Just (mkTyConApp (tupleTyCon Unboxed 1) + [ addrPrimTy ]), + resWrap) + Just x -> (Just (mkTyConApp (tupleTyCon Unboxed 2) + [ x, addrPrimTy ]), + resWrap)) + | otherwise = returnDs id in - boxResult maybe_arg_ids io_res_ty `thenDs` \ (ccall_result_ty, res_wrapper) -> + augmentResultDs `thenDs` \ augment -> + topConDs `thenDs` \ topCon -> + boxResult maybe_arg_ids augment topCon io_res_ty `thenDs` \ (ccall_result_ty, res_wrapper) -> - getUniqueDs `thenDs` \ ccall_uniq -> - getUniqueDs `thenDs` \ work_uniq -> + newUnique `thenDs` \ ccall_uniq -> + newUnique `thenDs` \ work_uniq -> let -- Build the worker worker_ty = mkForAllTys tvs (mkFunTys (map idType work_arg_ids) ccall_result_ty) @@ -263,7 +293,7 @@ dsFExport :: Id -- Either the exported Id, dsFExport fn_id ty ext_name cconv isDyn = let - (tvs,sans_foralls) = tcSplitForAllTys 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! @@ -326,23 +356,24 @@ dsFExportDynamic id cconv -- hack: need to get at the name of the C stub we're about to generate. fe_nm = mkFastString (moduleString mod_name ++ "_" ++ toCName fe_id) in - dsFExport id export_ty fe_nm cconv True `thenDs` \ (h_code, c_code, stub_args) -> newSysLocalDs arg_ty `thenDs` \ cback -> - dsLookupGlobalId newStablePtrName `thenDs` \ newStablePtrId -> + dsLookupGlobalId newStablePtrName `thenDs` \ newStablePtrId -> + dsLookupTyCon stablePtrTyConName `thenDs` \ stable_ptr_tycon -> let - mk_stbl_ptr_app = mkApps (Var newStablePtrId) [ Type arg_ty, Var cback ] + mk_stbl_ptr_app = mkApps (Var newStablePtrId) [ Type arg_ty, Var cback ] + stable_ptr_ty = mkTyConApp stable_ptr_tycon [arg_ty] + export_ty = mkFunTy stable_ptr_ty arg_ty in - dsLookupGlobalId bindIOName `thenDs` \ bindIOId -> - newSysLocalDs (mkTyConApp stablePtrTyCon [arg_ty]) `thenDs` \ stbl_value -> + dsLookupGlobalId bindIOName `thenDs` \ bindIOId -> + newSysLocalDs stable_ptr_ty `thenDs` \ stbl_value -> + dsFExport id export_ty fe_nm cconv True `thenDs` \ (h_code, c_code, stub_args) -> let - stbl_app cont ret_ty - = mkApps (Var bindIOId) - [ Type (mkTyConApp stablePtrTyCon [arg_ty]) - , Type ret_ty - , mk_stbl_ptr_app - , cont - ] - + stbl_app cont ret_ty = mkApps (Var bindIOId) + [ Type stable_ptr_ty + , Type ret_ty + , mk_stbl_ptr_app + , cont + ] {- The arguments to the external function which will create a little bit of (template) code on the fly @@ -356,14 +387,14 @@ dsFExportDynamic id cconv ] -- name of external entry point providing these services. -- (probably in the RTS.) - adjustor = FSLIT("createAdjustor") + adjustor = FSLIT("createAdjustor") - mb_sz_args = - case cconv of - StdCallConv -> Just (sum (map (getPrimRepSizeInBytes . typePrimRep) stub_args)) - _ -> Nothing + sz_args = sum (map (machRepByteWidth.argMachRep.primRepToCgRep.typePrimRep) stub_args) + mb_sz_args = case cconv of + StdCallConv -> Just sz_args + _ -> Nothing in - dsCCall adjustor adj_args PlayRisky False io_res_ty `thenDs` \ ccall_adj -> + dsCCall adjustor adj_args PlayRisky 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] $ @@ -384,7 +415,6 @@ dsFExportDynamic id cconv ([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)))