1 -----------------------------------------------------------------------------
3 -- Object-file symbols (called CLabel for histerical raisins).
5 -- (c) The University of Glasgow 2004
7 -----------------------------------------------------------------------------
10 CLabel, -- abstract type
19 mkStaticConEntryLabel,
22 mkStaticInfoTableLabel,
28 mkLocalInfoTableLabel,
31 mkLocalStaticConEntryLabel,
32 mkLocalConInfoTableLabel,
33 mkLocalStaticInfoTableLabel,
34 mkLocalClosureTableLabel,
46 mkPlainModuleInitLabel,
52 mkMainCapabilityLabel,
53 mkMAP_FROZEN_infoLabel,
54 mkEMPTY_MVAR_infoLabel,
57 mkCAFBlackHoleInfoTableLabel,
58 mkSECAFBlackHoleInfoTableLabel,
60 mkRtsSlowTickyCtrLabel,
83 mkCCLabel, mkCCSLabel,
85 DynamicLinkerLabelInfo(..),
87 dynamicLinkerLabelInfo,
92 infoLblToEntryLbl, entryLblToInfoLbl,
93 needsCDecl, isAsmTemp, externallyVisibleCLabel,
94 CLabelType(..), labelType, labelDynamic,
100 #include "HsVersions.h"
102 import CmdLineOpts ( DynFlags, opt_Static, opt_DoTickyProfiling )
103 import Packages ( isHomeModule, isDllName )
104 import DataCon ( ConTag )
105 import Module ( moduleFS, Module )
106 import Name ( Name, isExternalName )
107 import Unique ( pprUnique, Unique )
108 import PrimOp ( PrimOp )
109 import Config ( cLeadingUnderscore )
110 import CostCentre ( CostCentre, CostCentreStack )
114 -- -----------------------------------------------------------------------------
118 CLabel is an abstract type that supports the following operations:
122 - In a C file, does it need to be declared before use? (i.e. is it
123 guaranteed to be already in scope in the places we need to refer to it?)
125 - If it needs to be declared, what type (code or data) should it be
128 - Is it visible outside this object file or not?
130 - Is it "dynamic" (see details below)
132 - Eq and Ord, so that we can make sets of CLabels (currently only
133 used in outputting C as far as I can tell, to avoid generating
134 more than one declaration for any given label).
136 - Converting an info table label into an entry label.
140 = IdLabel -- A family of labels related to the
141 Name -- definition of a particular Id or Con
144 | DynIdLabel -- like IdLabel, but in a separate package,
145 Name -- and might therefore need a dynamic
146 IdLabelInfo -- reference.
148 | CaseLabel -- A family of labels related to a particular
150 {-# UNPACK #-} !Unique -- Unique says which case expression
154 {-# UNPACK #-} !Unique
157 {-# UNPACK #-} !Unique
160 Module -- the module name
162 Bool -- True <=> is in a different package
163 -- at some point we might want some kind of version number in
164 -- the module init label, to guard against compiling modules in
165 -- the wrong order. We can't use the interface file version however,
166 -- because we don't always recompile modules which depend on a module
167 -- whose version has changed.
169 | PlainModuleInitLabel -- without the vesrion & way info
171 Bool -- True <=> is in a different package
175 | RtsLabel RtsLabelInfo
177 | ForeignLabel FastString -- a 'C' (or otherwise foreign) label
178 (Maybe Int) -- possible '@n' suffix for stdcall functions
179 -- When generating C, the '@n' suffix is omitted, but when
180 -- generating assembler we must add it to the label.
181 Bool -- True <=> is dynamic
183 | CC_Label CostCentre
184 | CCS_Label CostCentreStack
186 -- Dynamic Linking in the NCG:
187 -- generated and used inside the NCG only,
188 -- see module PositionIndependentCode for details.
190 | DynamicLinkerLabel DynamicLinkerLabelInfo CLabel
191 -- special variants of a label used for dynamic linking
193 | PicBaseLabel -- a label used as a base for PIC calculations
194 -- on some platforms.
195 -- It takes the form of a local numeric
196 -- assembler label '1'; it is pretty-printed
197 -- as 1b, referring to the previous definition
198 -- of 1: in the assembler source file.
200 | DeadStripPreventer CLabel
201 -- label before an info table to prevent excessive dead-stripping on darwin
206 = Closure -- Label for closure
207 | SRT -- Static reference table
208 | SRTDesc -- Static reference table descriptor
209 | InfoTable -- Info tables for closures; always read-only
210 | Entry -- entry point
211 | Slow -- slow entry point
213 | RednCounts -- Label of place to keep Ticky-ticky info for
216 | Bitmap -- A bitmap (function or case return)
218 | ConEntry -- constructor entry point
219 | ConInfoTable -- corresponding info table
220 | StaticConEntry -- static constructor entry point
221 | StaticInfoTable -- corresponding info table
223 | ClosureTable -- table of closures for Enum tycons
237 = RtsSelectorInfoTable Bool{-updatable-} Int{-offset-} -- Selector thunks
238 | RtsSelectorEntry Bool{-updatable-} Int{-offset-}
240 | RtsApInfoTable Bool{-updatable-} Int{-arity-} -- AP thunks
241 | RtsApEntry Bool{-updatable-} Int{-arity-}
245 | RtsInfo LitString -- misc rts info tables
246 | RtsEntry LitString -- misc rts entry points
247 | RtsRetInfo LitString -- misc rts ret info tables
248 | RtsRet LitString -- misc rts return points
249 | RtsData LitString -- misc rts data bits, eg CHARLIKE_closure
250 | RtsCode LitString -- misc rts code
252 | RtsInfoFS FastString -- misc rts info tables
253 | RtsEntryFS FastString -- misc rts entry points
254 | RtsRetInfoFS FastString -- misc rts ret info tables
255 | RtsRetFS FastString -- misc rts return points
256 | RtsDataFS FastString -- misc rts data bits, eg CHARLIKE_closure
257 | RtsCodeFS FastString -- misc rts code
259 | RtsSlowTickyCtr String
262 -- NOTE: Eq on LitString compares the pointer only, so this isn't
265 data DynamicLinkerLabelInfo
266 = CodeStub -- MachO: Lfoo$stub, ELF: foo@plt
267 | SymbolPtr -- MachO: Lfoo$non_lazy_ptr, Windows: __imp_foo
268 | GotSymbolPtr -- ELF: foo@got
269 | GotSymbolOffset -- ELF: foo@gotoff
273 -- -----------------------------------------------------------------------------
274 -- Constructing CLabels
276 -- These are always local:
277 mkSRTLabel name = IdLabel name SRT
278 mkSRTDescLabel name = IdLabel name SRTDesc
279 mkSlowEntryLabel name = IdLabel name Slow
280 mkBitmapLabel name = IdLabel name Bitmap
281 mkRednCountsLabel name = IdLabel name RednCounts
283 -- These have local & (possibly) external variants:
284 mkLocalClosureLabel name = IdLabel name Closure
285 mkLocalInfoTableLabel name = IdLabel name InfoTable
286 mkLocalEntryLabel name = IdLabel name Entry
287 mkLocalClosureTableLabel name = IdLabel name ClosureTable
289 mkClosureLabel dflags name
290 | isDllName dflags name = DynIdLabel name Closure
291 | otherwise = IdLabel name Closure
293 mkInfoTableLabel dflags name
294 | isDllName dflags name = DynIdLabel name InfoTable
295 | otherwise = IdLabel name InfoTable
297 mkEntryLabel dflags name
298 | isDllName dflags name = DynIdLabel name Entry
299 | otherwise = IdLabel name Entry
301 mkClosureTableLabel dflags name
302 | isDllName dflags name = DynIdLabel name ClosureTable
303 | otherwise = IdLabel name ClosureTable
305 mkLocalConInfoTableLabel con = IdLabel con ConInfoTable
306 mkLocalConEntryLabel con = IdLabel con ConEntry
307 mkLocalStaticInfoTableLabel con = IdLabel con StaticInfoTable
308 mkLocalStaticConEntryLabel con = IdLabel con StaticConEntry
310 mkConInfoTableLabel name False = IdLabel name ConInfoTable
311 mkConInfoTableLabel name True = DynIdLabel name ConInfoTable
313 mkStaticInfoTableLabel name False = IdLabel name StaticInfoTable
314 mkStaticInfoTableLabel name True = DynIdLabel name StaticInfoTable
316 mkConEntryLabel dflags name
317 | isDllName dflags name = DynIdLabel name ConEntry
318 | otherwise = IdLabel name ConEntry
320 mkStaticConEntryLabel dflags name
321 | isDllName dflags name = DynIdLabel name StaticConEntry
322 | otherwise = IdLabel name StaticConEntry
325 mkReturnPtLabel uniq = CaseLabel uniq CaseReturnPt
326 mkReturnInfoLabel uniq = CaseLabel uniq CaseReturnInfo
327 mkAltLabel uniq tag = CaseLabel uniq (CaseAlt tag)
328 mkDefaultLabel uniq = CaseLabel uniq CaseDefault
330 mkStringLitLabel = StringLitLabel
331 mkAsmTempLabel = AsmTempLabel
333 mkModuleInitLabel :: DynFlags -> Module -> String -> CLabel
334 mkModuleInitLabel dflags mod way
335 = ModuleInitLabel mod way $! (not (isHomeModule dflags mod))
337 mkPlainModuleInitLabel :: DynFlags -> Module -> CLabel
338 mkPlainModuleInitLabel dflags mod
339 = PlainModuleInitLabel mod $! (not (isHomeModule dflags mod))
341 -- Some fixed runtime system labels
343 mkSplitMarkerLabel = RtsLabel (RtsCode SLIT("__stg_split_marker"))
344 mkUpdInfoLabel = RtsLabel (RtsInfo SLIT("stg_upd_frame"))
345 mkSeqInfoLabel = RtsLabel (RtsInfo SLIT("stg_seq_frame"))
346 mkIndStaticInfoLabel = RtsLabel (RtsInfo SLIT("stg_IND_STATIC"))
347 mkMainCapabilityLabel = RtsLabel (RtsData SLIT("MainCapability"))
348 mkMAP_FROZEN_infoLabel = RtsLabel (RtsInfo SLIT("stg_MUT_ARR_PTRS_FROZEN0"))
349 mkEMPTY_MVAR_infoLabel = RtsLabel (RtsInfo SLIT("stg_EMPTY_MVAR"))
351 mkTopTickyCtrLabel = RtsLabel (RtsData SLIT("top_ct"))
352 mkCAFBlackHoleInfoTableLabel = RtsLabel (RtsInfo SLIT("stg_CAF_BLACKHOLE"))
353 mkSECAFBlackHoleInfoTableLabel = if opt_DoTickyProfiling then
354 RtsLabel (RtsInfo SLIT("stg_SE_CAF_BLACKHOLE"))
355 else -- RTS won't have info table unless -ticky is on
356 panic "mkSECAFBlackHoleInfoTableLabel requires -ticky"
357 mkRtsPrimOpLabel primop = RtsLabel (RtsPrimOp primop)
359 moduleRegdLabel = ModuleRegdLabel
361 mkSelectorInfoLabel upd off = RtsLabel (RtsSelectorInfoTable upd off)
362 mkSelectorEntryLabel upd off = RtsLabel (RtsSelectorEntry upd off)
364 mkApInfoTableLabel upd off = RtsLabel (RtsApInfoTable upd off)
365 mkApEntryLabel upd off = RtsLabel (RtsApEntry upd off)
369 mkForeignLabel :: FastString -> Maybe Int -> Bool -> CLabel
370 mkForeignLabel str mb_sz is_dynamic = ForeignLabel str mb_sz is_dynamic
374 mkCCLabel cc = CC_Label cc
375 mkCCSLabel ccs = CCS_Label ccs
377 mkRtsInfoLabel str = RtsLabel (RtsInfo str)
378 mkRtsEntryLabel str = RtsLabel (RtsEntry str)
379 mkRtsRetInfoLabel str = RtsLabel (RtsRetInfo str)
380 mkRtsRetLabel str = RtsLabel (RtsRet str)
381 mkRtsCodeLabel str = RtsLabel (RtsCode str)
382 mkRtsDataLabel str = RtsLabel (RtsData str)
384 mkRtsInfoLabelFS str = RtsLabel (RtsInfoFS str)
385 mkRtsEntryLabelFS str = RtsLabel (RtsEntryFS str)
386 mkRtsRetInfoLabelFS str = RtsLabel (RtsRetInfoFS str)
387 mkRtsRetLabelFS str = RtsLabel (RtsRetFS str)
388 mkRtsCodeLabelFS str = RtsLabel (RtsCodeFS str)
389 mkRtsDataLabelFS str = RtsLabel (RtsDataFS str)
391 mkRtsSlowTickyCtrLabel :: String -> CLabel
392 mkRtsSlowTickyCtrLabel pat = RtsLabel (RtsSlowTickyCtr pat)
396 mkDynamicLinkerLabel :: DynamicLinkerLabelInfo -> CLabel -> CLabel
397 mkDynamicLinkerLabel = DynamicLinkerLabel
399 dynamicLinkerLabelInfo :: CLabel -> Maybe (DynamicLinkerLabelInfo, CLabel)
400 dynamicLinkerLabelInfo (DynamicLinkerLabel info lbl) = Just (info, lbl)
401 dynamicLinkerLabelInfo _ = Nothing
403 -- Position independent code
405 mkPicBaseLabel :: CLabel
406 mkPicBaseLabel = PicBaseLabel
408 mkDeadStripPreventer :: CLabel -> CLabel
409 mkDeadStripPreventer lbl = DeadStripPreventer lbl
411 -- -----------------------------------------------------------------------------
412 -- Converting info labels to entry labels.
414 infoLblToEntryLbl :: CLabel -> CLabel
415 infoLblToEntryLbl (IdLabel n InfoTable) = IdLabel n Entry
416 infoLblToEntryLbl (IdLabel n ConInfoTable) = IdLabel n ConEntry
417 infoLblToEntryLbl (IdLabel n StaticInfoTable) = IdLabel n StaticConEntry
418 infoLblToEntryLbl (DynIdLabel n InfoTable) = DynIdLabel n Entry
419 infoLblToEntryLbl (DynIdLabel n ConInfoTable) = DynIdLabel n ConEntry
420 infoLblToEntryLbl (DynIdLabel n StaticInfoTable) = DynIdLabel n StaticConEntry
421 infoLblToEntryLbl (CaseLabel n CaseReturnInfo) = CaseLabel n CaseReturnPt
422 infoLblToEntryLbl (RtsLabel (RtsInfo s)) = RtsLabel (RtsEntry s)
423 infoLblToEntryLbl (RtsLabel (RtsRetInfo s)) = RtsLabel (RtsRet s)
424 infoLblToEntryLbl (RtsLabel (RtsInfoFS s)) = RtsLabel (RtsEntryFS s)
425 infoLblToEntryLbl (RtsLabel (RtsRetInfoFS s)) = RtsLabel (RtsRetFS s)
426 infoLblToEntryLbl _ = panic "CLabel.infoLblToEntryLbl"
428 entryLblToInfoLbl :: CLabel -> CLabel
429 entryLblToInfoLbl (IdLabel n Entry) = IdLabel n InfoTable
430 entryLblToInfoLbl (IdLabel n ConEntry) = IdLabel n ConInfoTable
431 entryLblToInfoLbl (IdLabel n StaticConEntry) = IdLabel n StaticInfoTable
432 entryLblToInfoLbl (DynIdLabel n Entry) = DynIdLabel n InfoTable
433 entryLblToInfoLbl (DynIdLabel n ConEntry) = DynIdLabel n ConInfoTable
434 entryLblToInfoLbl (DynIdLabel n StaticConEntry) = DynIdLabel n StaticInfoTable
435 entryLblToInfoLbl (CaseLabel n CaseReturnPt) = CaseLabel n CaseReturnInfo
436 entryLblToInfoLbl (RtsLabel (RtsEntry s)) = RtsLabel (RtsInfo s)
437 entryLblToInfoLbl (RtsLabel (RtsRet s)) = RtsLabel (RtsRetInfo s)
438 entryLblToInfoLbl (RtsLabel (RtsEntryFS s)) = RtsLabel (RtsInfoFS s)
439 entryLblToInfoLbl (RtsLabel (RtsRetFS s)) = RtsLabel (RtsRetInfoFS s)
440 entryLblToInfoLbl l = pprPanic "CLabel.entryLblToInfoLbl" (pprCLabel l)
442 -- -----------------------------------------------------------------------------
443 -- Does a CLabel need declaring before use or not?
445 needsCDecl :: CLabel -> Bool
446 -- False <=> it's pre-declared; don't bother
447 -- don't bother declaring SRT & Bitmap labels, we always make sure
448 -- they are defined before use.
449 needsCDecl (IdLabel _ SRT) = False
450 needsCDecl (IdLabel _ SRTDesc) = False
451 needsCDecl (IdLabel _ Bitmap) = False
452 needsCDecl (IdLabel _ _) = True
453 needsCDecl (DynIdLabel _ _) = True
454 needsCDecl (CaseLabel _ _) = True
455 needsCDecl (ModuleInitLabel _ _ _) = True
456 needsCDecl (PlainModuleInitLabel _ _) = True
457 needsCDecl ModuleRegdLabel = False
459 needsCDecl (CaseLabel _ _) = False
460 needsCDecl (StringLitLabel _) = False
461 needsCDecl (AsmTempLabel _) = False
462 needsCDecl (RtsLabel _) = False
463 needsCDecl (ForeignLabel _ _ _) = False
464 needsCDecl (CC_Label _) = True
465 needsCDecl (CCS_Label _) = True
467 -- Whether the label is an assembler temporary:
469 isAsmTemp :: CLabel -> Bool -- is a local temporary for native code generation
470 isAsmTemp (AsmTempLabel _) = True
473 -- -----------------------------------------------------------------------------
474 -- Is a CLabel visible outside this object file or not?
476 -- From the point of view of the code generator, a name is
477 -- externally visible if it has to be declared as exported
478 -- in the .o file's symbol table; that is, made non-static.
480 externallyVisibleCLabel :: CLabel -> Bool -- not C "static"
481 externallyVisibleCLabel (CaseLabel _ _) = False
482 externallyVisibleCLabel (StringLitLabel _) = False
483 externallyVisibleCLabel (AsmTempLabel _) = False
484 externallyVisibleCLabel (ModuleInitLabel _ _ _)= True
485 externallyVisibleCLabel (PlainModuleInitLabel _ _)= True
486 externallyVisibleCLabel ModuleRegdLabel = False
487 externallyVisibleCLabel (RtsLabel _) = True
488 externallyVisibleCLabel (ForeignLabel _ _ _) = True
489 externallyVisibleCLabel (IdLabel name _) = isExternalName name
490 externallyVisibleCLabel (DynIdLabel name _) = isExternalName name
491 externallyVisibleCLabel (CC_Label _) = True
492 externallyVisibleCLabel (CCS_Label _) = True
493 externallyVisibleCLabel (DynamicLinkerLabel _ _) = False
495 -- -----------------------------------------------------------------------------
496 -- Finding the "type" of a CLabel
498 -- For generating correct types in label declarations:
504 labelType :: CLabel -> CLabelType
505 labelType (RtsLabel (RtsSelectorInfoTable _ _)) = DataLabel
506 labelType (RtsLabel (RtsApInfoTable _ _)) = DataLabel
507 labelType (RtsLabel (RtsData _)) = DataLabel
508 labelType (RtsLabel (RtsCode _)) = CodeLabel
509 labelType (RtsLabel (RtsInfo _)) = DataLabel
510 labelType (RtsLabel (RtsEntry _)) = CodeLabel
511 labelType (RtsLabel (RtsRetInfo _)) = DataLabel
512 labelType (RtsLabel (RtsRet _)) = CodeLabel
513 labelType (RtsLabel (RtsDataFS _)) = DataLabel
514 labelType (RtsLabel (RtsCodeFS _)) = CodeLabel
515 labelType (RtsLabel (RtsInfoFS _)) = DataLabel
516 labelType (RtsLabel (RtsEntryFS _)) = CodeLabel
517 labelType (RtsLabel (RtsRetInfoFS _)) = DataLabel
518 labelType (RtsLabel (RtsRetFS _)) = CodeLabel
519 labelType (CaseLabel _ CaseReturnInfo) = DataLabel
520 labelType (CaseLabel _ _) = CodeLabel
521 labelType (ModuleInitLabel _ _ _) = CodeLabel
522 labelType (PlainModuleInitLabel _ _) = CodeLabel
524 labelType (IdLabel _ info) = idInfoLabelType info
525 labelType (DynIdLabel _ info) = idInfoLabelType info
526 labelType _ = DataLabel
528 idInfoLabelType info =
530 InfoTable -> DataLabel
533 ConInfoTable -> DataLabel
534 StaticInfoTable -> DataLabel
535 ClosureTable -> DataLabel
539 -- -----------------------------------------------------------------------------
540 -- Does a CLabel need dynamic linkage?
542 -- When referring to data in code, we need to know whether
543 -- that data resides in a DLL or not. [Win32 only.]
544 -- @labelDynamic@ returns @True@ if the label is located
545 -- in a DLL, be it a data reference or not.
547 labelDynamic :: CLabel -> Bool
550 RtsLabel _ -> not opt_Static -- i.e., is the RTS in a DLL or not?
552 DynIdLabel n k -> True
553 #if mingw32_TARGET_OS
554 ForeignLabel _ _ d -> d
556 -- On Mac OS X and on ELF platforms, false positives are OK,
557 -- so we claim that all foreign imports come from dynamic libraries
558 ForeignLabel _ _ _ -> True
560 ModuleInitLabel m _ dyn -> not opt_Static && dyn
561 PlainModuleInitLabel m dyn -> not opt_Static && dyn
563 -- Note that DynamicLinkerLabels do NOT require dynamic linking themselves.
567 OLD?: These GRAN functions are needed for spitting out GRAN_FETCH() at the
568 right places. It is used to detect when the abstractC statement of an
569 CCodeBlock actually contains the code for a slow entry point. -- HWL
571 We need at least @Eq@ for @CLabels@, because we want to avoid
572 duplicate declarations in generating C (see @labelSeenTE@ in
576 -----------------------------------------------------------------------------
577 -- Printing out CLabels.
584 where <name> is <Module>_<name> for external names and <unique> for
585 internal names. <type> is one of the following:
588 srt Static reference table
589 srtd Static reference table descriptor
590 entry Entry code (function, closure)
591 slow Slow entry code (if any)
592 ret Direct return address
594 <n>_alt Case alternative (tag n)
595 dflt Default case alternative
596 btm Large bitmap vector
597 closure Static closure
598 con_entry Dynamic Constructor entry code
599 con_info Dynamic Constructor info table
600 static_entry Static Constructor entry code
601 static_info Static Constructor info table
602 sel_info Selector info table
603 sel_entry Selector entry code
605 ccs Cost centre stack
607 Many of these distinctions are only for documentation reasons. For
608 example, _ret is only distinguished from _entry to make it easy to
609 tell whether a code fragment is a return point or a closure/function
613 pprCLabel :: CLabel -> SDoc
615 #if ! OMIT_NATIVE_CODEGEN
616 pprCLabel (AsmTempLabel u)
617 = getPprStyle $ \ sty ->
619 ptext asmTempLabelPrefix <> pprUnique u
621 char '_' <> pprUnique u
623 pprCLabel (DynamicLinkerLabel info lbl)
624 = pprDynamicLinkerAsmLabel info lbl
626 pprCLabel PicBaseLabel
629 pprCLabel (DeadStripPreventer lbl)
630 = pprCLabel lbl <> ptext SLIT("_dsp")
634 #if ! OMIT_NATIVE_CODEGEN
635 getPprStyle $ \ sty ->
637 maybe_underscore (pprAsmCLbl lbl)
643 | underscorePrefix = pp_cSEP <> doc
646 #ifdef mingw32_TARGET_OS
647 -- In asm mode, we need to put the suffix on a stdcall ForeignLabel.
648 -- (The C compiler does this itself).
649 pprAsmCLbl (ForeignLabel fs (Just sz) _)
650 = ftext fs <> char '@' <> int sz
655 pprCLbl (StringLitLabel u)
656 = pprUnique u <> ptext SLIT("_str")
658 pprCLbl (CaseLabel u CaseReturnPt)
659 = hcat [pprUnique u, ptext SLIT("_ret")]
660 pprCLbl (CaseLabel u CaseReturnInfo)
661 = hcat [pprUnique u, ptext SLIT("_info")]
662 pprCLbl (CaseLabel u (CaseAlt tag))
663 = hcat [pprUnique u, pp_cSEP, int tag, ptext SLIT("_alt")]
664 pprCLbl (CaseLabel u CaseDefault)
665 = hcat [pprUnique u, ptext SLIT("_dflt")]
667 pprCLbl (RtsLabel (RtsCode str)) = ptext str
668 pprCLbl (RtsLabel (RtsData str)) = ptext str
669 pprCLbl (RtsLabel (RtsCodeFS str)) = ftext str
670 pprCLbl (RtsLabel (RtsDataFS str)) = ftext str
672 pprCLbl (RtsLabel (RtsSelectorInfoTable upd_reqd offset))
673 = hcat [ptext SLIT("stg_sel_"), text (show offset),
675 then SLIT("_upd_info")
676 else SLIT("_noupd_info"))
679 pprCLbl (RtsLabel (RtsSelectorEntry upd_reqd offset))
680 = hcat [ptext SLIT("stg_sel_"), text (show offset),
682 then SLIT("_upd_entry")
683 else SLIT("_noupd_entry"))
686 pprCLbl (RtsLabel (RtsApInfoTable upd_reqd arity))
687 = hcat [ptext SLIT("stg_ap_"), text (show arity),
689 then SLIT("_upd_info")
690 else SLIT("_noupd_info"))
693 pprCLbl (RtsLabel (RtsApEntry upd_reqd arity))
694 = hcat [ptext SLIT("stg_ap_"), text (show arity),
696 then SLIT("_upd_entry")
697 else SLIT("_noupd_entry"))
700 pprCLbl (RtsLabel (RtsInfo fs))
701 = ptext fs <> ptext SLIT("_info")
703 pprCLbl (RtsLabel (RtsEntry fs))
704 = ptext fs <> ptext SLIT("_entry")
706 pprCLbl (RtsLabel (RtsRetInfo fs))
707 = ptext fs <> ptext SLIT("_info")
709 pprCLbl (RtsLabel (RtsRet fs))
710 = ptext fs <> ptext SLIT("_ret")
712 pprCLbl (RtsLabel (RtsInfoFS fs))
713 = ftext fs <> ptext SLIT("_info")
715 pprCLbl (RtsLabel (RtsEntryFS fs))
716 = ftext fs <> ptext SLIT("_entry")
718 pprCLbl (RtsLabel (RtsRetInfoFS fs))
719 = ftext fs <> ptext SLIT("_info")
721 pprCLbl (RtsLabel (RtsRetFS fs))
722 = ftext fs <> ptext SLIT("_ret")
724 pprCLbl (RtsLabel (RtsPrimOp primop))
725 = ppr primop <> ptext SLIT("_fast")
727 pprCLbl (RtsLabel (RtsSlowTickyCtr pat))
728 = ptext SLIT("SLOW_CALL_") <> text pat <> ptext SLIT("_ctr")
730 pprCLbl ModuleRegdLabel
731 = ptext SLIT("_module_registered")
733 pprCLbl (ForeignLabel str _ _)
736 pprCLbl (IdLabel name flavor) = ppr name <> ppIdFlavor flavor
737 pprCLbl (DynIdLabel name flavor) = ppr name <> ppIdFlavor flavor
739 pprCLbl (CC_Label cc) = ppr cc
740 pprCLbl (CCS_Label ccs) = ppr ccs
742 pprCLbl (ModuleInitLabel mod way _)
743 = ptext SLIT("__stginit_") <> ftext (moduleFS mod)
744 <> char '_' <> text way
745 pprCLbl (PlainModuleInitLabel mod _)
746 = ptext SLIT("__stginit_") <> ftext (moduleFS mod)
748 ppIdFlavor :: IdLabelInfo -> SDoc
749 ppIdFlavor x = pp_cSEP <>
751 Closure -> ptext SLIT("closure")
752 SRT -> ptext SLIT("srt")
753 SRTDesc -> ptext SLIT("srtd")
754 InfoTable -> ptext SLIT("info")
755 Entry -> ptext SLIT("entry")
756 Slow -> ptext SLIT("slow")
757 RednCounts -> ptext SLIT("ct")
758 Bitmap -> ptext SLIT("btm")
759 ConEntry -> ptext SLIT("con_entry")
760 ConInfoTable -> ptext SLIT("con_info")
761 StaticConEntry -> ptext SLIT("static_entry")
762 StaticInfoTable -> ptext SLIT("static_info")
763 ClosureTable -> ptext SLIT("closure_tbl")
769 -- -----------------------------------------------------------------------------
770 -- Machine-dependent knowledge about labels.
772 underscorePrefix :: Bool -- leading underscore on assembler labels?
773 underscorePrefix = (cLeadingUnderscore == "YES")
775 asmTempLabelPrefix :: LitString -- for formatting labels
778 {- The alpha assembler likes temporary labels to look like $L123
779 instead of L123. (Don't toss the L, because then Lf28
783 #elif darwin_TARGET_OS
789 pprDynamicLinkerAsmLabel :: DynamicLinkerLabelInfo -> CLabel -> SDoc
792 pprDynamicLinkerAsmLabel SymbolPtr lbl
793 = char 'L' <> pprCLabel lbl <> text "$non_lazy_ptr"
794 pprDynamicLinkerAsmLabel CodeStub lbl
795 = char 'L' <> pprCLabel lbl <> text "$stub"
796 #elif powerpc_TARGET_ARCH && linux_TARGET_OS
797 pprDynamicLinkerAsmLabel CodeStub lbl
798 = pprCLabel lbl <> text "@plt"
799 pprDynamicLinkerAsmLabel SymbolPtr lbl
800 = text ".LC_" <> pprCLabel lbl
801 #elif linux_TARGET_OS
802 pprDynamicLinkerAsmLabel CodeStub lbl
803 = pprCLabel lbl <> text "@plt"
804 pprDynamicLinkerAsmLabel GotSymbolPtr lbl
805 = pprCLabel lbl <> text "@got"
806 pprDynamicLinkerAsmLabel GotSymbolOffset lbl
807 = pprCLabel lbl <> text "@gotoff"
808 pprDynamicLinkerAsmLabel SymbolPtr lbl
809 = text ".LC_" <> pprCLabel lbl
810 #elif mingw32_TARGET_OS
811 pprDynamicLinkerAsmLabel SymbolPtr lbl
812 = text "__imp_" <> pprCLabel lbl
814 pprDynamicLinkerAsmLabel _ _
815 = panic "pprDynamicLinkerAsmLabel"