X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fcompiler%2FabsCSyn%2FCLabel.lhs;h=437e5dff79cc1d3d2fd444d5cdd8bb6d3a7b3451;hb=428c025eaea3256b86f902640549c8e15414ac19;hp=92ead1718980d83da65bf4802e1a7426efa575ee;hpb=9a972425548b14c2267e4a82fa1525314ebd7b06;p=ghc-hetmet.git diff --git a/ghc/compiler/absCSyn/CLabel.lhs b/ghc/compiler/absCSyn/CLabel.lhs index 92ead17..437e5df 100644 --- a/ghc/compiler/absCSyn/CLabel.lhs +++ b/ghc/compiler/absCSyn/CLabel.lhs @@ -1,7 +1,5 @@ % -% (c) The GRASP/AQUA Project, Glasgow University, 1992-1998 -% -% $Id: CLabel.lhs,v 1.53 2002/07/16 14:56:09 simonmar Exp $ +% (c) The University of Glasgow, 1992-2002 % \section[CLabel]{@CLabel@: Information to make C Labels} @@ -12,8 +10,8 @@ module CLabel ( mkClosureLabel, mkSRTLabel, mkInfoTableLabel, - mkStdEntryLabel, - mkFastEntryLabel, + mkEntryLabel, + mkSlowEntryLabel, mkConEntryLabel, mkStaticConEntryLabel, mkRednCountsLabel, @@ -62,6 +60,9 @@ module CLabel ( mkSelectorInfoLabel, mkSelectorEntryLabel, + mkRtsApplyInfoLabel, + mkRtsApplyEntryLabel, + mkForeignLabel, mkCC_Label, mkCCS_Label, @@ -90,7 +91,6 @@ import TyCon ( TyCon ) import Unique ( pprUnique, Unique ) import PrimOp ( PrimOp ) import CostCentre ( CostCentre, CostCentreStack ) -import BasicTypes ( Version ) import Outputable import FastString \end{code} @@ -127,8 +127,12 @@ data CLabel | ModuleInitLabel Module -- the module name - Version -- its version (same as the interface file ver) String -- its "way" + -- at some point we might want some kind of version number in + -- the module init label, to guard against compiling modules in + -- the wrong order. We can't use the interface file version however, + -- because we don't always recompile modules which depend on a module + -- whose version has changed. | PlainModuleInitLabel Module -- without the vesrion & way info @@ -146,20 +150,17 @@ data CLabel \begin{code} data IdLabelInfo = Closure -- Label for (static???) closure - | SRT -- Static reference table - - | InfoTbl -- Info table for a closure; always read-only - - | EntryStd -- Thunk, or "slow", code entry point - - | EntryFast Int -- entry pt when no arg satisfaction chk needed; - -- Int is the arity of the function (to be - -- encoded into the name) + | InfoTbl -- Info tables for closures; always read-only + | Entry -- entry point + | Slow -- slow entry point -- Ticky-ticky counting | RednCounts -- Label of place to keep reduction-count info for -- this Id + + | Bitmap -- A bitmap (function or case return) + deriving (Eq, Ord) data DataConLabelInfo @@ -175,13 +176,12 @@ data CaseLabelInfo | CaseVecTbl | CaseAlt ConTag | CaseDefault - | CaseBitmap deriving (Eq, Ord) data RtsLabelInfo = RtsShouldNeverHappenCode - | RtsBlackHoleInfoTbl FastString -- black hole with info table name + | RtsBlackHoleInfoTbl LitString -- black hole with info table name | RtsUpdInfo -- upd_frame_info | RtsSeqInfo -- seq_frame_info @@ -203,12 +203,16 @@ data RtsLabelInfo | RtsModuleRegd + | RtsApplyInfoLabel LitString + | RtsApplyEntryLabel LitString + deriving (Eq, Ord) -- Label Type: for generating C declarations. data CLabelType - = InfoTblType + = RetInfoTblType + | InfoTblType | ClosureType | VecTblType | ClosureTblType @@ -219,11 +223,10 @@ data CLabelType \begin{code} mkClosureLabel id = IdLabel id Closure mkSRTLabel id = IdLabel id SRT -mkInfoTableLabel id = IdLabel id InfoTbl -mkStdEntryLabel id = IdLabel id EntryStd -mkFastEntryLabel id arity = ASSERT(arity > 0) - IdLabel id (EntryFast arity) - +mkInfoTableLabel id = IdLabel id InfoTbl +mkEntryLabel id = IdLabel id Entry +mkSlowEntryLabel id = IdLabel id Slow +mkBitmapLabel id = IdLabel id Bitmap mkRednCountsLabel id = IdLabel id RednCounts mkStaticInfoTableLabel con = DataConLabel con StaticInfoTbl @@ -237,7 +240,7 @@ mkReturnInfoLabel uniq = CaseLabel uniq CaseReturnInfo mkVecTblLabel uniq = CaseLabel uniq CaseVecTbl mkAltLabel uniq tag = CaseLabel uniq (CaseAlt tag) mkDefaultLabel uniq = CaseLabel uniq CaseDefault -mkBitmapLabel uniq = CaseLabel uniq CaseBitmap + mkClosureTblLabel tycon = TyConLabel tycon @@ -263,10 +266,10 @@ mkMAP_FROZEN_infoLabel = RtsLabel (Rts_Info "stg_MUT_ARR_PTRS_FROZEN_info") mkEMPTY_MVAR_infoLabel = RtsLabel (Rts_Info "stg_EMPTY_MVAR_info") mkTopTickyCtrLabel = RtsLabel RtsTopTickyCtr -mkBlackHoleInfoTableLabel = RtsLabel (RtsBlackHoleInfoTbl FSLIT("stg_BLACKHOLE_info")) -mkCAFBlackHoleInfoTableLabel = RtsLabel (RtsBlackHoleInfoTbl FSLIT("stg_CAF_BLACKHOLE_info")) +mkBlackHoleInfoTableLabel = RtsLabel (RtsBlackHoleInfoTbl SLIT("stg_BLACKHOLE_info")) +mkCAFBlackHoleInfoTableLabel = RtsLabel (RtsBlackHoleInfoTbl SLIT("stg_CAF_BLACKHOLE_info")) mkSECAFBlackHoleInfoTableLabel = if opt_DoTickyProfiling then - RtsLabel (RtsBlackHoleInfoTbl FSLIT("stg_SE_CAF_BLACKHOLE_info")) + RtsLabel (RtsBlackHoleInfoTbl SLIT("stg_SE_CAF_BLACKHOLE_info")) else -- RTS won't have info table unless -ticky is on panic "mkSECAFBlackHoleInfoTableLabel requires -ticky" mkRtsPrimOpLabel primop = RtsLabel (RtsPrimOp primop) @@ -288,6 +291,11 @@ mkForeignLabel str is_dynamic = ForeignLabel str is_dynamic mkCC_Label cc = CC_Label cc mkCCS_Label ccs = CCS_Label ccs + +-- Std RTS application routines + +mkRtsApplyInfoLabel = RtsLabel . RtsApplyInfoLabel +mkRtsApplyEntryLabel = RtsLabel . RtsApplyEntryLabel \end{code} \begin{code} @@ -309,11 +317,15 @@ Declarations for direct return points are needed, because they may be let-no-escapes, which can be recursive. \begin{code} + -- don't bother declaring SRT & Bitmap labels, we always make sure + -- they are defined before use. +needsCDecl (IdLabel _ SRT) = False +needsCDecl (IdLabel _ Bitmap) = False needsCDecl (IdLabel _ _) = True needsCDecl (CaseLabel _ CaseReturnPt) = True needsCDecl (DataConLabel _ _) = True needsCDecl (TyConLabel _) = True -needsCDecl (ModuleInitLabel _ _ _) = True +needsCDecl (ModuleInitLabel _ _) = True needsCDecl (PlainModuleInitLabel _) = True needsCDecl (CaseLabel _ _) = False @@ -341,7 +353,7 @@ externallyVisibleCLabel (DataConLabel _ _) = True externallyVisibleCLabel (TyConLabel tc) = True externallyVisibleCLabel (CaseLabel _ _) = False externallyVisibleCLabel (AsmTempLabel _) = False -externallyVisibleCLabel (ModuleInitLabel _ _ _)= True +externallyVisibleCLabel (ModuleInitLabel _ _)= True externallyVisibleCLabel (PlainModuleInitLabel _)= True externallyVisibleCLabel (RtsLabel RtsModuleRegd) = False --hack externallyVisibleCLabel (RtsLabel _) = True @@ -351,27 +363,36 @@ externallyVisibleCLabel (CC_Label _) = False -- not strictly true externallyVisibleCLabel (CCS_Label _) = False -- not strictly true \end{code} -For generating correct types in label declarations... +For generating correct types in label declarations, and also for +deciding whether the C compiler would like us to use '&' before the +label to get its address: \begin{code} labelType :: CLabel -> CLabelType labelType (RtsLabel (RtsBlackHoleInfoTbl _)) = InfoTblType labelType (RtsLabel (RtsSelectorInfoTbl _ _)) = InfoTblType labelType (RtsLabel (RtsApInfoTbl _ _)) = InfoTblType -labelType (RtsLabel RtsUpdInfo) = InfoTblType +labelType (RtsLabel RtsUpdInfo) = RetInfoTblType +labelType (RtsLabel RtsSeqInfo) = RetInfoTblType +labelType (RtsLabel RtsTopTickyCtr) = CodeType -- XXX labelType (RtsLabel (Rts_Info _)) = InfoTblType -labelType (CaseLabel _ CaseReturnInfo) = InfoTblType +labelType (RtsLabel (RtsApplyInfoLabel _)) = RetInfoTblType +labelType (RtsLabel (RtsApplyEntryLabel _)) = CodeType +labelType (CaseLabel _ CaseReturnInfo) = RetInfoTblType labelType (CaseLabel _ CaseReturnPt) = CodeType labelType (CaseLabel _ CaseVecTbl) = VecTblType labelType (TyConLabel _) = ClosureTblType -labelType (ModuleInitLabel _ _ _) = CodeType +labelType (ModuleInitLabel _ _) = CodeType labelType (PlainModuleInitLabel _) = CodeType +labelType (CC_Label _) = CodeType -- hack +labelType (CCS_Label _) = CodeType -- hack labelType (IdLabel _ info) = case info of - InfoTbl -> InfoTblType - Closure -> ClosureType - _ -> CodeType + InfoTbl -> InfoTblType + Closure -> ClosureType + Bitmap -> DataType + _ -> CodeType labelType (DataConLabel _ info) = case info of @@ -399,7 +420,7 @@ labelDynamic lbl = DataConLabel n k -> isDllName n TyConLabel tc -> isDllName (getName tc) ForeignLabel _ d -> d - ModuleInitLabel m _ _ -> (not opt_Static) && (not (isHomeModule m)) + ModuleInitLabel m _ -> (not opt_Static) && (not (isHomeModule m)) PlainModuleInitLabel m -> (not opt_Static) && (not (isHomeModule m)) _ -> False \end{code} @@ -426,6 +447,7 @@ internal names. is one of the following: info Info table srt Static reference table entry Entry code + slow Slow entry code (if any) ret Direct return address vtbl Vector table _alt Case alternative (tag n) @@ -468,8 +490,6 @@ pprCLbl (CaseLabel u (CaseAlt tag)) = hcat [pprUnique u, pp_cSEP, int tag, pp_cSEP, ptext SLIT("alt")] pprCLbl (CaseLabel u CaseDefault) = hcat [pprUnique u, pp_cSEP, ptext SLIT("dflt")] -pprCLbl (CaseLabel u CaseBitmap) - = hcat [pprUnique u, pp_cSEP, ptext SLIT("btm")] pprCLbl (RtsLabel RtsShouldNeverHappenCode) = ptext SLIT("NULL") -- used to be stg_error_entry but Windows can't have DLL entry points as static @@ -485,7 +505,7 @@ pprCLbl (RtsLabel (Rts_Code str)) = text str pprCLbl (RtsLabel RtsTopTickyCtr) = ptext SLIT("top_ct") -pprCLbl (RtsLabel (RtsBlackHoleInfoTbl info)) = ftext info +pprCLbl (RtsLabel (RtsBlackHoleInfoTbl info)) = ptext info pprCLbl (RtsLabel (RtsSelectorInfoTbl upd_reqd offset)) = hcat [ptext SLIT("stg_sel_"), text (show offset), @@ -515,6 +535,12 @@ pprCLbl (RtsLabel (RtsApEntry upd_reqd arity)) else SLIT("_noupd_entry")) ] +pprCLbl (RtsLabel (RtsApplyInfoLabel fs)) + = ptext SLIT("stg_ap_") <> ptext fs <> ptext SLIT("_info") + +pprCLbl (RtsLabel (RtsApplyEntryLabel fs)) + = ptext SLIT("stg_ap_") <> ptext fs <> ptext SLIT("_ret") + pprCLbl (RtsLabel (RtsPrimOp primop)) = ppr primop <> ptext SLIT("_fast") @@ -533,9 +559,9 @@ pprCLbl (DataConLabel con flavor) = ppr con <> ppConFlavor flavor pprCLbl (CC_Label cc) = ppr cc pprCLbl (CCS_Label ccs) = ppr ccs -pprCLbl (ModuleInitLabel mod ver way) +pprCLbl (ModuleInitLabel mod way) = ptext SLIT("__stginit_") <> ftext (moduleNameFS (moduleName mod)) - <> char '_' <> int ver <> char '_' <> text way + <> char '_' <> text way pprCLbl (PlainModuleInitLabel mod) = ptext SLIT("__stginit_") <> ftext (moduleNameFS (moduleName mod)) @@ -546,11 +572,11 @@ ppIdFlavor x = pp_cSEP <> (case x of Closure -> ptext SLIT("closure") SRT -> ptext SLIT("srt") - InfoTbl -> ptext SLIT("info") - EntryStd -> ptext SLIT("entry") - EntryFast arity -> --false:ASSERT (arity > 0) - (<>) (ptext SLIT("fast")) (int arity) + InfoTbl -> ptext SLIT("info") + Entry -> ptext SLIT("entry") + Slow -> ptext SLIT("slow") RednCounts -> ptext SLIT("ct") + Bitmap -> ptext SLIT("btm") ) ppConFlavor x = pp_cSEP <> @@ -561,4 +587,3 @@ ppConFlavor x = pp_cSEP <> StaticInfoTbl -> ptext SLIT("static_info") ) \end{code} -