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 Packages ( HomeModules )
103 import StaticFlags ( opt_Static, opt_DoTickyProfiling )
104 import Packages ( isHomeModule, isDllName )
105 import DataCon ( ConTag )
106 import Module ( moduleFS, Module )
107 import Name ( Name, isExternalName )
108 import Unique ( pprUnique, Unique )
109 import PrimOp ( PrimOp )
110 import Config ( cLeadingUnderscore )
111 import CostCentre ( CostCentre, CostCentreStack )
115 -- -----------------------------------------------------------------------------
119 CLabel is an abstract type that supports the following operations:
123 - In a C file, does it need to be declared before use? (i.e. is it
124 guaranteed to be already in scope in the places we need to refer to it?)
126 - If it needs to be declared, what type (code or data) should it be
129 - Is it visible outside this object file or not?
131 - Is it "dynamic" (see details below)
133 - Eq and Ord, so that we can make sets of CLabels (currently only
134 used in outputting C as far as I can tell, to avoid generating
135 more than one declaration for any given label).
137 - Converting an info table label into an entry label.
141 = IdLabel -- A family of labels related to the
142 Name -- definition of a particular Id or Con
145 | DynIdLabel -- like IdLabel, but in a separate package,
146 Name -- and might therefore need a dynamic
147 IdLabelInfo -- reference.
149 | CaseLabel -- A family of labels related to a particular
151 {-# UNPACK #-} !Unique -- Unique says which case expression
155 {-# UNPACK #-} !Unique
158 {-# UNPACK #-} !Unique
161 Module -- the module name
163 Bool -- True <=> is in a different package
164 -- at some point we might want some kind of version number in
165 -- the module init label, to guard against compiling modules in
166 -- the wrong order. We can't use the interface file version however,
167 -- because we don't always recompile modules which depend on a module
168 -- whose version has changed.
170 | PlainModuleInitLabel -- without the vesrion & way info
172 Bool -- True <=> is in a different package
176 | RtsLabel RtsLabelInfo
178 | ForeignLabel FastString -- a 'C' (or otherwise foreign) label
179 (Maybe Int) -- possible '@n' suffix for stdcall functions
180 -- When generating C, the '@n' suffix is omitted, but when
181 -- generating assembler we must add it to the label.
182 Bool -- True <=> is dynamic
184 | CC_Label CostCentre
185 | CCS_Label CostCentreStack
187 -- Dynamic Linking in the NCG:
188 -- generated and used inside the NCG only,
189 -- see module PositionIndependentCode for details.
191 | DynamicLinkerLabel DynamicLinkerLabelInfo CLabel
192 -- special variants of a label used for dynamic linking
194 | PicBaseLabel -- a label used as a base for PIC calculations
195 -- on some platforms.
196 -- It takes the form of a local numeric
197 -- assembler label '1'; it is pretty-printed
198 -- as 1b, referring to the previous definition
199 -- of 1: in the assembler source file.
201 | DeadStripPreventer CLabel
202 -- label before an info table to prevent excessive dead-stripping on darwin
207 = Closure -- Label for closure
208 | SRT -- Static reference table
209 | SRTDesc -- Static reference table descriptor
210 | InfoTable -- Info tables for closures; always read-only
211 | Entry -- entry point
212 | Slow -- slow entry point
214 | RednCounts -- Label of place to keep Ticky-ticky info for
217 | Bitmap -- A bitmap (function or case return)
219 | ConEntry -- constructor entry point
220 | ConInfoTable -- corresponding info table
221 | StaticConEntry -- static constructor entry point
222 | StaticInfoTable -- corresponding info table
224 | ClosureTable -- table of closures for Enum tycons
238 = RtsSelectorInfoTable Bool{-updatable-} Int{-offset-} -- Selector thunks
239 | RtsSelectorEntry Bool{-updatable-} Int{-offset-}
241 | RtsApInfoTable Bool{-updatable-} Int{-arity-} -- AP thunks
242 | RtsApEntry Bool{-updatable-} Int{-arity-}
246 | RtsInfo LitString -- misc rts info tables
247 | RtsEntry LitString -- misc rts entry points
248 | RtsRetInfo LitString -- misc rts ret info tables
249 | RtsRet LitString -- misc rts return points
250 | RtsData LitString -- misc rts data bits, eg CHARLIKE_closure
251 | RtsCode LitString -- misc rts code
253 | RtsInfoFS FastString -- misc rts info tables
254 | RtsEntryFS FastString -- misc rts entry points
255 | RtsRetInfoFS FastString -- misc rts ret info tables
256 | RtsRetFS FastString -- misc rts return points
257 | RtsDataFS FastString -- misc rts data bits, eg CHARLIKE_closure
258 | RtsCodeFS FastString -- misc rts code
260 | RtsSlowTickyCtr String
263 -- NOTE: Eq on LitString compares the pointer only, so this isn't
266 data DynamicLinkerLabelInfo
267 = CodeStub -- MachO: Lfoo$stub, ELF: foo@plt
268 | SymbolPtr -- MachO: Lfoo$non_lazy_ptr, Windows: __imp_foo
269 | GotSymbolPtr -- ELF: foo@got
270 | GotSymbolOffset -- ELF: foo@gotoff
274 -- -----------------------------------------------------------------------------
275 -- Constructing CLabels
277 -- These are always local:
278 mkSRTLabel name = IdLabel name SRT
279 mkSRTDescLabel name = IdLabel name SRTDesc
280 mkSlowEntryLabel name = IdLabel name Slow
281 mkBitmapLabel name = IdLabel name Bitmap
282 mkRednCountsLabel name = IdLabel name RednCounts
284 -- These have local & (possibly) external variants:
285 mkLocalClosureLabel name = IdLabel name Closure
286 mkLocalInfoTableLabel name = IdLabel name InfoTable
287 mkLocalEntryLabel name = IdLabel name Entry
288 mkLocalClosureTableLabel name = IdLabel name ClosureTable
290 mkClosureLabel hmods name
291 | isDllName hmods name = DynIdLabel name Closure
292 | otherwise = IdLabel name Closure
294 mkInfoTableLabel hmods name
295 | isDllName hmods name = DynIdLabel name InfoTable
296 | otherwise = IdLabel name InfoTable
298 mkEntryLabel hmods name
299 | isDllName hmods name = DynIdLabel name Entry
300 | otherwise = IdLabel name Entry
302 mkClosureTableLabel hmods name
303 | isDllName hmods name = DynIdLabel name ClosureTable
304 | otherwise = IdLabel name ClosureTable
306 mkLocalConInfoTableLabel con = IdLabel con ConInfoTable
307 mkLocalConEntryLabel con = IdLabel con ConEntry
308 mkLocalStaticInfoTableLabel con = IdLabel con StaticInfoTable
309 mkLocalStaticConEntryLabel con = IdLabel con StaticConEntry
311 mkConInfoTableLabel name False = IdLabel name ConInfoTable
312 mkConInfoTableLabel name True = DynIdLabel name ConInfoTable
314 mkStaticInfoTableLabel name False = IdLabel name StaticInfoTable
315 mkStaticInfoTableLabel name True = DynIdLabel name StaticInfoTable
317 mkConEntryLabel hmods name
318 | isDllName hmods name = DynIdLabel name ConEntry
319 | otherwise = IdLabel name ConEntry
321 mkStaticConEntryLabel hmods name
322 | isDllName hmods name = DynIdLabel name StaticConEntry
323 | otherwise = IdLabel name StaticConEntry
326 mkReturnPtLabel uniq = CaseLabel uniq CaseReturnPt
327 mkReturnInfoLabel uniq = CaseLabel uniq CaseReturnInfo
328 mkAltLabel uniq tag = CaseLabel uniq (CaseAlt tag)
329 mkDefaultLabel uniq = CaseLabel uniq CaseDefault
331 mkStringLitLabel = StringLitLabel
332 mkAsmTempLabel = AsmTempLabel
334 mkModuleInitLabel :: HomeModules -> Module -> String -> CLabel
335 mkModuleInitLabel hmods mod way
336 = ModuleInitLabel mod way $! (not (isHomeModule hmods mod))
338 mkPlainModuleInitLabel :: HomeModules -> Module -> CLabel
339 mkPlainModuleInitLabel hmods mod
340 = PlainModuleInitLabel mod $! (not (isHomeModule hmods mod))
342 -- Some fixed runtime system labels
344 mkSplitMarkerLabel = RtsLabel (RtsCode SLIT("__stg_split_marker"))
345 mkUpdInfoLabel = RtsLabel (RtsInfo SLIT("stg_upd_frame"))
346 mkSeqInfoLabel = RtsLabel (RtsInfo SLIT("stg_seq_frame"))
347 mkIndStaticInfoLabel = RtsLabel (RtsInfo SLIT("stg_IND_STATIC"))
348 mkMainCapabilityLabel = RtsLabel (RtsData SLIT("MainCapability"))
349 mkMAP_FROZEN_infoLabel = RtsLabel (RtsInfo SLIT("stg_MUT_ARR_PTRS_FROZEN0"))
350 mkEMPTY_MVAR_infoLabel = RtsLabel (RtsInfo SLIT("stg_EMPTY_MVAR"))
352 mkTopTickyCtrLabel = RtsLabel (RtsData SLIT("top_ct"))
353 mkCAFBlackHoleInfoTableLabel = RtsLabel (RtsInfo SLIT("stg_CAF_BLACKHOLE"))
354 mkSECAFBlackHoleInfoTableLabel = if opt_DoTickyProfiling then
355 RtsLabel (RtsInfo SLIT("stg_SE_CAF_BLACKHOLE"))
356 else -- RTS won't have info table unless -ticky is on
357 panic "mkSECAFBlackHoleInfoTableLabel requires -ticky"
358 mkRtsPrimOpLabel primop = RtsLabel (RtsPrimOp primop)
360 moduleRegdLabel = ModuleRegdLabel
362 mkSelectorInfoLabel upd off = RtsLabel (RtsSelectorInfoTable upd off)
363 mkSelectorEntryLabel upd off = RtsLabel (RtsSelectorEntry upd off)
365 mkApInfoTableLabel upd off = RtsLabel (RtsApInfoTable upd off)
366 mkApEntryLabel upd off = RtsLabel (RtsApEntry upd off)
370 mkForeignLabel :: FastString -> Maybe Int -> Bool -> CLabel
371 mkForeignLabel str mb_sz is_dynamic = ForeignLabel str mb_sz is_dynamic
375 mkCCLabel cc = CC_Label cc
376 mkCCSLabel ccs = CCS_Label ccs
378 mkRtsInfoLabel str = RtsLabel (RtsInfo str)
379 mkRtsEntryLabel str = RtsLabel (RtsEntry str)
380 mkRtsRetInfoLabel str = RtsLabel (RtsRetInfo str)
381 mkRtsRetLabel str = RtsLabel (RtsRet str)
382 mkRtsCodeLabel str = RtsLabel (RtsCode str)
383 mkRtsDataLabel str = RtsLabel (RtsData str)
385 mkRtsInfoLabelFS str = RtsLabel (RtsInfoFS str)
386 mkRtsEntryLabelFS str = RtsLabel (RtsEntryFS str)
387 mkRtsRetInfoLabelFS str = RtsLabel (RtsRetInfoFS str)
388 mkRtsRetLabelFS str = RtsLabel (RtsRetFS str)
389 mkRtsCodeLabelFS str = RtsLabel (RtsCodeFS str)
390 mkRtsDataLabelFS str = RtsLabel (RtsDataFS str)
392 mkRtsSlowTickyCtrLabel :: String -> CLabel
393 mkRtsSlowTickyCtrLabel pat = RtsLabel (RtsSlowTickyCtr pat)
397 mkDynamicLinkerLabel :: DynamicLinkerLabelInfo -> CLabel -> CLabel
398 mkDynamicLinkerLabel = DynamicLinkerLabel
400 dynamicLinkerLabelInfo :: CLabel -> Maybe (DynamicLinkerLabelInfo, CLabel)
401 dynamicLinkerLabelInfo (DynamicLinkerLabel info lbl) = Just (info, lbl)
402 dynamicLinkerLabelInfo _ = Nothing
404 -- Position independent code
406 mkPicBaseLabel :: CLabel
407 mkPicBaseLabel = PicBaseLabel
409 mkDeadStripPreventer :: CLabel -> CLabel
410 mkDeadStripPreventer lbl = DeadStripPreventer lbl
412 -- -----------------------------------------------------------------------------
413 -- Converting info labels to entry labels.
415 infoLblToEntryLbl :: CLabel -> CLabel
416 infoLblToEntryLbl (IdLabel n InfoTable) = IdLabel n Entry
417 infoLblToEntryLbl (IdLabel n ConInfoTable) = IdLabel n ConEntry
418 infoLblToEntryLbl (IdLabel n StaticInfoTable) = IdLabel n StaticConEntry
419 infoLblToEntryLbl (DynIdLabel n InfoTable) = DynIdLabel n Entry
420 infoLblToEntryLbl (DynIdLabel n ConInfoTable) = DynIdLabel n ConEntry
421 infoLblToEntryLbl (DynIdLabel n StaticInfoTable) = DynIdLabel n StaticConEntry
422 infoLblToEntryLbl (CaseLabel n CaseReturnInfo) = CaseLabel n CaseReturnPt
423 infoLblToEntryLbl (RtsLabel (RtsInfo s)) = RtsLabel (RtsEntry s)
424 infoLblToEntryLbl (RtsLabel (RtsRetInfo s)) = RtsLabel (RtsRet s)
425 infoLblToEntryLbl (RtsLabel (RtsInfoFS s)) = RtsLabel (RtsEntryFS s)
426 infoLblToEntryLbl (RtsLabel (RtsRetInfoFS s)) = RtsLabel (RtsRetFS s)
427 infoLblToEntryLbl _ = panic "CLabel.infoLblToEntryLbl"
429 entryLblToInfoLbl :: CLabel -> CLabel
430 entryLblToInfoLbl (IdLabel n Entry) = IdLabel n InfoTable
431 entryLblToInfoLbl (IdLabel n ConEntry) = IdLabel n ConInfoTable
432 entryLblToInfoLbl (IdLabel n StaticConEntry) = IdLabel n StaticInfoTable
433 entryLblToInfoLbl (DynIdLabel n Entry) = DynIdLabel n InfoTable
434 entryLblToInfoLbl (DynIdLabel n ConEntry) = DynIdLabel n ConInfoTable
435 entryLblToInfoLbl (DynIdLabel n StaticConEntry) = DynIdLabel n StaticInfoTable
436 entryLblToInfoLbl (CaseLabel n CaseReturnPt) = CaseLabel n CaseReturnInfo
437 entryLblToInfoLbl (RtsLabel (RtsEntry s)) = RtsLabel (RtsInfo s)
438 entryLblToInfoLbl (RtsLabel (RtsRet s)) = RtsLabel (RtsRetInfo s)
439 entryLblToInfoLbl (RtsLabel (RtsEntryFS s)) = RtsLabel (RtsInfoFS s)
440 entryLblToInfoLbl (RtsLabel (RtsRetFS s)) = RtsLabel (RtsRetInfoFS s)
441 entryLblToInfoLbl l = pprPanic "CLabel.entryLblToInfoLbl" (pprCLabel l)
443 -- -----------------------------------------------------------------------------
444 -- Does a CLabel need declaring before use or not?
446 needsCDecl :: CLabel -> Bool
447 -- False <=> it's pre-declared; don't bother
448 -- don't bother declaring SRT & Bitmap labels, we always make sure
449 -- they are defined before use.
450 needsCDecl (IdLabel _ SRT) = False
451 needsCDecl (IdLabel _ SRTDesc) = False
452 needsCDecl (IdLabel _ Bitmap) = False
453 needsCDecl (IdLabel _ _) = True
454 needsCDecl (DynIdLabel _ _) = True
455 needsCDecl (CaseLabel _ _) = True
456 needsCDecl (ModuleInitLabel _ _ _) = True
457 needsCDecl (PlainModuleInitLabel _ _) = True
458 needsCDecl ModuleRegdLabel = 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"