%
-% (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}
mkClosureLabel,
mkSRTLabel,
+ mkSRTDescLabel,
mkInfoTableLabel,
- mkStdEntryLabel,
- mkFastEntryLabel,
+ mkEntryLabel,
+ mkSlowEntryLabel,
mkConEntryLabel,
mkStaticConEntryLabel,
mkRednCountsLabel,
mkSelectorInfoLabel,
mkSelectorEntryLabel,
+ mkRtsApplyInfoLabel,
+ mkRtsApplyEntryLabel,
+
mkForeignLabel,
mkCC_Label, mkCCS_Label,
import Unique ( pprUnique, Unique )
import PrimOp ( PrimOp )
import CostCentre ( CostCentre, CostCentreStack )
-import BasicTypes ( Version )
import Outputable
import FastString
\end{code}
| 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
\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)
+ | SRTDesc -- Static reference table descriptor
+ | 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
| 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
| RtsModuleRegd
+ | RtsApplyInfoLabel LitString
+ | RtsApplyEntryLabel LitString
+
deriving (Eq, Ord)
-- Label Type: for generating C declarations.
data CLabelType
- = InfoTblType
+ = RetInfoTblType
+ | InfoTblType
| ClosureType
| VecTblType
| ClosureTblType
\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)
-
+mkSRTDescLabel id = IdLabel id SRTDesc
+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
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
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)
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}
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 _ SRTDesc) = 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
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
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
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}
info Info table
srt Static reference table
+ srtd Static reference table descriptor
entry Entry code
+ slow Slow entry code (if any)
ret Direct return address
vtbl Vector table
<n>_alt Case alternative (tag n)
= 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
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),
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")
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))
(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)
+ SRTDesc -> ptext SLIT("srtd")
+ InfoTbl -> ptext SLIT("info")
+ Entry -> ptext SLIT("entry")
+ Slow -> ptext SLIT("slow")
RednCounts -> ptext SLIT("ct")
+ Bitmap -> ptext SLIT("btm")
)
ppConFlavor x = pp_cSEP <>
StaticInfoTbl -> ptext SLIT("static_info")
)
\end{code}
-
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