1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960196119621963196419651966196719681969197019711972197319741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050205120522053205420552056205720582059206020612062206320642065206620672068206920702071207220732074207520762077207820792080208120822083208420852086208720882089209020912092209320942095209620972098209921002101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170217121722173217421752176217721782179218021812182218321842185218621872188218921902191219221932194219521962197219821992200220122022203220422052206220722082209221022112212221322142215221622172218221922202221222222232224222522262227222822292230223122322233223422352236223722382239224022412242224322442245224622472248224922502251225222532254225522562257225822592260226122622263226422652266226722682269227022712272227322742275227622772278227922802281228222832284228522862287228822892290229122922293229422952296229722982299230023012302230323042305230623072308230923102311231223132314231523162317231823192320232123222323232423252326232723282329233023312332233323342335233623372338233923402341234223432344234523462347234823492350235123522353235423552356235723582359236023612362236323642365236623672368236923702371237223732374237523762377237823792380238123822383238423852386238723882389239023912392239323942395239623972398239924002401240224032404240524062407240824092410241124122413241424152416241724182419242024212422242324242425242624272428242924302431243224332434243524362437243824392440244124422443244424452446244724482449245024512452245324542455245624572458245924602461246224632464246524662467246824692470247124722473247424752476247724782479248024812482248324842485248624872488248924902491249224932494249524962497249824992500250125022503250425052506250725082509251025112512251325142515251625172518251925202521252225232524252525262527252825292530253125322533253425352536253725382539254025412542254325442545254625472548254925502551255225532554255525562557255825592560256125622563256425652566256725682569257025712572257325742575257625772578257925802581258225832584258525862587258825892590259125922593259425952596259725982599260026012602260326042605260626072608260926102611261226132614261526162617261826192620262126222623262426252626262726282629263026312632263326342635263626372638263926402641264226432644264526462647264826492650265126522653265426552656265726582659266026612662266326642665266626672668266926702671267226732674267526762677267826792680268126822683268426852686268726882689269026912692269326942695269626972698269927002701270227032704270527062707270827092710271127122713271427152716271727182719272027212722272327242725272627272728272927302731273227332734273527362737273827392740274127422743274427452746274727482749275027512752275327542755275627572758275927602761276227632764276527662767276827692770277127722773277427752776277727782779278027812782278327842785278627872788278927902791279227932794279527962797279827992800280128022803280428052806280728082809281028112812281328142815281628172818281928202821282228232824282528262827282828292830283128322833283428352836283728382839284028412842284328442845284628472848284928502851285228532854285528562857285828592860286128622863286428652866286728682869287028712872287328742875287628772878287928802881288228832884288528862887288828892890289128922893289428952896289728982899290029012902290329042905290629072908290929102911291229132914291529162917291829192920292129222923292429252926292729282929293029312932293329342935293629372938293929402941294229432944294529462947294829492950295129522953295429552956295729582959296029612962296329642965296629672968296929702971297229732974297529762977297829792980298129822983298429852986298729882989299029912992299329942995299629972998299930003001300230033004300530063007300830093010301130123013301430153016301730183019302030213022302330243025302630273028302930303031303230333034303530363037303830393040304130423043304430453046304730483049305030513052305330543055305630573058305930603061306230633064306530663067306830693070307130723073307430753076307730783079308030813082308330843085308630873088308930903091309230933094309530963097309830993100310131023103310431053106310731083109311031113112311331143115311631173118311931203121312231233124312531263127312831293130313131323133313431353136313731383139314031413142314331443145314631473148314931503151315231533154315531563157315831593160316131623163316431653166316731683169317031713172317331743175317631773178317931803181318231833184318531863187318831893190319131923193319431953196319731983199320032013202320332043205320632073208320932103211321232133214321532163217321832193220322132223223322432253226322732283229323032313232323332343235323632373238323932403241324232433244324532463247324832493250325132523253325432553256325732583259326032613262326332643265326632673268326932703271327232733274327532763277327832793280328132823283328432853286328732883289329032913292329332943295329632973298329933003301330233033304330533063307330833093310331133123313331433153316331733183319332033213322332333243325332633273328332933303331333233333334333533363337333833393340334133423343334433453346334733483349335033513352335333543355335633573358335933603361336233633364336533663367336833693370337133723373337433753376337733783379338033813382338333843385338633873388338933903391339233933394339533963397339833993400340134023403340434053406340734083409341034113412341334143415341634173418341934203421342234233424342534263427342834293430343134323433343434353436343734383439344034413442344334443445344634473448344934503451345234533454345534563457345834593460346134623463346434653466346734683469347034713472347334743475347634773478347934803481348234833484348534863487348834893490349134923493349434953496349734983499350035013502350335043505350635073508350935103511351235133514351535163517351835193520352135223523352435253526352735283529353035313532353335343535353635373538353935403541354235433544354535463547354835493550355135523553355435553556355735583559356035613562356335643565356635673568356935703571357235733574357535763577357835793580358135823583358435853586358735883589359035913592359335943595359635973598359936003601360236033604360536063607360836093610361136123613361436153616361736183619362036213622362336243625362636273628362936303631363236333634363536363637363836393640364136423643364436453646364736483649365036513652365336543655365636573658365936603661366236633664366536663667366836693670367136723673367436753676367736783679368036813682368336843685368636873688368936903691369236933694369536963697369836993700370137023703370437053706370737083709371037113712371337143715371637173718371937203721372237233724372537263727372837293730373137323733373437353736373737383739374037413742374337443745374637473748374937503751375237533754375537563757375837593760376137623763376437653766376737683769377037713772377337743775377637773778377937803781378237833784378537863787378837893790379137923793379437953796379737983799380038013802380338043805380638073808380938103811381238133814381538163817381838193820382138223823382438253826382738283829383038313832383338343835383638373838383938403841384238433844384538463847384838493850385138523853385438553856385738583859386038613862386338643865386638673868386938703871387238733874387538763877387838793880388138823883 |
- /* IBM S/390-specific support for 64-bit ELF
- Copyright (C) 2000-2015 Free Software Foundation, Inc.
- Contributed Martin Schwidefsky (schwidefsky@de.ibm.com).
- This file is part of BFD, the Binary File Descriptor library.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
- #include "sysdep.h"
- #include "bfd.h"
- #include "bfdlink.h"
- #include "libbfd.h"
- #include "elf-bfd.h"
- #include "elf/s390.h"
- /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
- from smaller values. Start with zero, widen, *then* decrement. */
- #define MINUS_ONE (((bfd_vma)0) - 1)
- static bfd_reloc_status_type
- s390_tls_reloc (bfd *, arelent *, asymbol *, void *,
- asection *, bfd *, char **);
- static bfd_reloc_status_type
- s390_elf_ldisp_reloc (bfd *, arelent *, asymbol *, void *,
- asection *, bfd *, char **);
- /* The relocation "howto" table. */
- static reloc_howto_type elf_howto_table[] =
- {
- HOWTO (R_390_NONE, /* type */
- 0, /* rightshift */
- 3, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */
- 0, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_390_NONE", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
- HOWTO(R_390_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_8", FALSE, 0,0x000000ff, FALSE),
- HOWTO(R_390_12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
- bfd_elf_generic_reloc, "R_390_12", FALSE, 0,0x00000fff, FALSE),
- HOWTO(R_390_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PC32", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOT12, 0, 1, 12, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOT12", FALSE, 0,0x00000fff, FALSE),
- HOWTO(R_390_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOT32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLT32", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_COPY, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_COPY", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GLOB_DAT", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_JMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_JMP_SLOT", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_RELATIVE, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_RELATIVE", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GOTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTOFF32", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GOTPC, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTPC", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_GOT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOT16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PC16", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PC16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PC16DBL", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PLT16DBL, 1, 1, 16, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLT16DBL", FALSE, 0,0x0000ffff, TRUE),
- HOWTO(R_390_PC32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PC32DBL", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_PLT32DBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLT32DBL", FALSE, 0,0xffffffff, TRUE),
- HOWTO(R_390_GOTPCDBL, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTPCDBL", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_64", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PC64", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOT64", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_PLT64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLT64", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_GOTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTENT", FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_GOTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTOFF16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTOFF64", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GOTPLT12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
- bfd_elf_generic_reloc, "R_390_GOTPLT12", FALSE, 0,0x00000fff, FALSE),
- HOWTO(R_390_GOTPLT16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTPLT16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_GOTPLT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTPLT32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTPLT64", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_GOTPLTENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_GOTPLTENT",FALSE, 0,MINUS_ONE, TRUE),
- HOWTO(R_390_PLTOFF16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLTOFF16", FALSE, 0,0x0000ffff, FALSE),
- HOWTO(R_390_PLTOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLTOFF32", FALSE, 0,0xffffffff, FALSE),
- HOWTO(R_390_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLTOFF64", FALSE, 0,MINUS_ONE, FALSE),
- HOWTO(R_390_TLS_LOAD, 0, 0, 0, FALSE, 0, complain_overflow_dont,
- s390_tls_reloc, "R_390_TLS_LOAD", FALSE, 0, 0, FALSE),
- HOWTO(R_390_TLS_GDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
- s390_tls_reloc, "R_390_TLS_GDCALL", FALSE, 0, 0, FALSE),
- HOWTO(R_390_TLS_LDCALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
- s390_tls_reloc, "R_390_TLS_LDCALL", FALSE, 0, 0, FALSE),
- EMPTY_HOWTO (R_390_TLS_GD32), /* Empty entry for R_390_TLS_GD32. */
- HOWTO(R_390_TLS_GD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_GD64", FALSE, 0, MINUS_ONE, FALSE),
- HOWTO(R_390_TLS_GOTIE12, 0, 1, 12, FALSE, 0, complain_overflow_dont,
- bfd_elf_generic_reloc, "R_390_TLS_GOTIE12", FALSE, 0, 0x00000fff, FALSE),
- EMPTY_HOWTO (R_390_TLS_GOTIE32), /* Empty entry for R_390_TLS_GOTIE32. */
- HOWTO(R_390_TLS_GOTIE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_GOTIE64", FALSE, 0, MINUS_ONE, FALSE),
- EMPTY_HOWTO (R_390_TLS_LDM32), /* Empty entry for R_390_TLS_LDM32. */
- HOWTO(R_390_TLS_LDM64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_LDM64", FALSE, 0, MINUS_ONE, FALSE),
- EMPTY_HOWTO (R_390_TLS_IE32), /* Empty entry for R_390_TLS_IE32. */
- HOWTO(R_390_TLS_IE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_IE64", FALSE, 0, MINUS_ONE, FALSE),
- HOWTO(R_390_TLS_IEENT, 1, 2, 32, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_IEENT", FALSE, 0, MINUS_ONE, TRUE),
- EMPTY_HOWTO (R_390_TLS_LE32), /* Empty entry for R_390_TLS_LE32. */
- HOWTO(R_390_TLS_LE64, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_LE64", FALSE, 0, MINUS_ONE, FALSE),
- EMPTY_HOWTO (R_390_TLS_LDO32), /* Empty entry for R_390_TLS_LDO32. */
- HOWTO(R_390_TLS_LDO64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_LDO64", FALSE, 0, MINUS_ONE, FALSE),
- HOWTO(R_390_TLS_DTPMOD, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_DTPMOD", FALSE, 0, MINUS_ONE, FALSE),
- HOWTO(R_390_TLS_DTPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_DTPOFF", FALSE, 0, MINUS_ONE, FALSE),
- HOWTO(R_390_TLS_TPOFF, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_TLS_TPOFF", FALSE, 0, MINUS_ONE, FALSE),
- HOWTO(R_390_20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
- s390_elf_ldisp_reloc, "R_390_20", FALSE, 0,0x0fffff00, FALSE),
- HOWTO(R_390_GOT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
- s390_elf_ldisp_reloc, "R_390_GOT20", FALSE, 0,0x0fffff00, FALSE),
- HOWTO(R_390_GOTPLT20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
- s390_elf_ldisp_reloc, "R_390_GOTPLT20", FALSE, 0,0x0fffff00, FALSE),
- HOWTO(R_390_TLS_GOTIE20, 0, 2, 20, FALSE, 8, complain_overflow_dont,
- s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE),
- HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE),
- HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE),
- HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE),
- HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE),
- HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE),
- };
- /* GNU extension to record C++ vtable hierarchy. */
- static reloc_howto_type elf64_s390_vtinherit_howto =
- HOWTO (R_390_GNU_VTINHERIT, 0,4,0,FALSE,0,complain_overflow_dont, NULL, "R_390_GNU_VTINHERIT", FALSE,0, 0, FALSE);
- static reloc_howto_type elf64_s390_vtentry_howto =
- HOWTO (R_390_GNU_VTENTRY, 0,4,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_390_GNU_VTENTRY", FALSE,0,0, FALSE);
- static reloc_howto_type *
- elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
- {
- switch (code)
- {
- case BFD_RELOC_NONE:
- return &elf_howto_table[(int) R_390_NONE];
- case BFD_RELOC_8:
- return &elf_howto_table[(int) R_390_8];
- case BFD_RELOC_390_12:
- return &elf_howto_table[(int) R_390_12];
- case BFD_RELOC_16:
- return &elf_howto_table[(int) R_390_16];
- case BFD_RELOC_32:
- return &elf_howto_table[(int) R_390_32];
- case BFD_RELOC_CTOR:
- return &elf_howto_table[(int) R_390_32];
- case BFD_RELOC_32_PCREL:
- return &elf_howto_table[(int) R_390_PC32];
- case BFD_RELOC_390_GOT12:
- return &elf_howto_table[(int) R_390_GOT12];
- case BFD_RELOC_32_GOT_PCREL:
- return &elf_howto_table[(int) R_390_GOT32];
- case BFD_RELOC_390_PLT32:
- return &elf_howto_table[(int) R_390_PLT32];
- case BFD_RELOC_390_COPY:
- return &elf_howto_table[(int) R_390_COPY];
- case BFD_RELOC_390_GLOB_DAT:
- return &elf_howto_table[(int) R_390_GLOB_DAT];
- case BFD_RELOC_390_JMP_SLOT:
- return &elf_howto_table[(int) R_390_JMP_SLOT];
- case BFD_RELOC_390_RELATIVE:
- return &elf_howto_table[(int) R_390_RELATIVE];
- case BFD_RELOC_32_GOTOFF:
- return &elf_howto_table[(int) R_390_GOTOFF32];
- case BFD_RELOC_390_GOTPC:
- return &elf_howto_table[(int) R_390_GOTPC];
- case BFD_RELOC_390_GOT16:
- return &elf_howto_table[(int) R_390_GOT16];
- case BFD_RELOC_16_PCREL:
- return &elf_howto_table[(int) R_390_PC16];
- case BFD_RELOC_390_PC12DBL:
- return &elf_howto_table[(int) R_390_PC12DBL];
- case BFD_RELOC_390_PLT12DBL:
- return &elf_howto_table[(int) R_390_PLT12DBL];
- case BFD_RELOC_390_PC16DBL:
- return &elf_howto_table[(int) R_390_PC16DBL];
- case BFD_RELOC_390_PLT16DBL:
- return &elf_howto_table[(int) R_390_PLT16DBL];
- case BFD_RELOC_390_PC24DBL:
- return &elf_howto_table[(int) R_390_PC24DBL];
- case BFD_RELOC_390_PLT24DBL:
- return &elf_howto_table[(int) R_390_PLT24DBL];
- case BFD_RELOC_390_PC32DBL:
- return &elf_howto_table[(int) R_390_PC32DBL];
- case BFD_RELOC_390_PLT32DBL:
- return &elf_howto_table[(int) R_390_PLT32DBL];
- case BFD_RELOC_390_GOTPCDBL:
- return &elf_howto_table[(int) R_390_GOTPCDBL];
- case BFD_RELOC_64:
- return &elf_howto_table[(int) R_390_64];
- case BFD_RELOC_64_PCREL:
- return &elf_howto_table[(int) R_390_PC64];
- case BFD_RELOC_390_GOT64:
- return &elf_howto_table[(int) R_390_GOT64];
- case BFD_RELOC_390_PLT64:
- return &elf_howto_table[(int) R_390_PLT64];
- case BFD_RELOC_390_GOTENT:
- return &elf_howto_table[(int) R_390_GOTENT];
- case BFD_RELOC_16_GOTOFF:
- return &elf_howto_table[(int) R_390_GOTOFF16];
- case BFD_RELOC_390_GOTOFF64:
- return &elf_howto_table[(int) R_390_GOTOFF64];
- case BFD_RELOC_390_GOTPLT12:
- return &elf_howto_table[(int) R_390_GOTPLT12];
- case BFD_RELOC_390_GOTPLT16:
- return &elf_howto_table[(int) R_390_GOTPLT16];
- case BFD_RELOC_390_GOTPLT32:
- return &elf_howto_table[(int) R_390_GOTPLT32];
- case BFD_RELOC_390_GOTPLT64:
- return &elf_howto_table[(int) R_390_GOTPLT64];
- case BFD_RELOC_390_GOTPLTENT:
- return &elf_howto_table[(int) R_390_GOTPLTENT];
- case BFD_RELOC_390_PLTOFF16:
- return &elf_howto_table[(int) R_390_PLTOFF16];
- case BFD_RELOC_390_PLTOFF32:
- return &elf_howto_table[(int) R_390_PLTOFF32];
- case BFD_RELOC_390_PLTOFF64:
- return &elf_howto_table[(int) R_390_PLTOFF64];
- case BFD_RELOC_390_TLS_LOAD:
- return &elf_howto_table[(int) R_390_TLS_LOAD];
- case BFD_RELOC_390_TLS_GDCALL:
- return &elf_howto_table[(int) R_390_TLS_GDCALL];
- case BFD_RELOC_390_TLS_LDCALL:
- return &elf_howto_table[(int) R_390_TLS_LDCALL];
- case BFD_RELOC_390_TLS_GD64:
- return &elf_howto_table[(int) R_390_TLS_GD64];
- case BFD_RELOC_390_TLS_GOTIE12:
- return &elf_howto_table[(int) R_390_TLS_GOTIE12];
- case BFD_RELOC_390_TLS_GOTIE64:
- return &elf_howto_table[(int) R_390_TLS_GOTIE64];
- case BFD_RELOC_390_TLS_LDM64:
- return &elf_howto_table[(int) R_390_TLS_LDM64];
- case BFD_RELOC_390_TLS_IE64:
- return &elf_howto_table[(int) R_390_TLS_IE64];
- case BFD_RELOC_390_TLS_IEENT:
- return &elf_howto_table[(int) R_390_TLS_IEENT];
- case BFD_RELOC_390_TLS_LE64:
- return &elf_howto_table[(int) R_390_TLS_LE64];
- case BFD_RELOC_390_TLS_LDO64:
- return &elf_howto_table[(int) R_390_TLS_LDO64];
- case BFD_RELOC_390_TLS_DTPMOD:
- return &elf_howto_table[(int) R_390_TLS_DTPMOD];
- case BFD_RELOC_390_TLS_DTPOFF:
- return &elf_howto_table[(int) R_390_TLS_DTPOFF];
- case BFD_RELOC_390_TLS_TPOFF:
- return &elf_howto_table[(int) R_390_TLS_TPOFF];
- case BFD_RELOC_390_20:
- return &elf_howto_table[(int) R_390_20];
- case BFD_RELOC_390_GOT20:
- return &elf_howto_table[(int) R_390_GOT20];
- case BFD_RELOC_390_GOTPLT20:
- return &elf_howto_table[(int) R_390_GOTPLT20];
- case BFD_RELOC_390_TLS_GOTIE20:
- return &elf_howto_table[(int) R_390_TLS_GOTIE20];
- case BFD_RELOC_390_IRELATIVE:
- return &elf_howto_table[(int) R_390_IRELATIVE];
- case BFD_RELOC_VTABLE_INHERIT:
- return &elf64_s390_vtinherit_howto;
- case BFD_RELOC_VTABLE_ENTRY:
- return &elf64_s390_vtentry_howto;
- default:
- break;
- }
- return 0;
- }
- static reloc_howto_type *
- elf_s390_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
- {
- unsigned int i;
- for (i = 0;
- i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]);
- i++)
- if (elf_howto_table[i].name != NULL
- && strcasecmp (elf_howto_table[i].name, r_name) == 0)
- return &elf_howto_table[i];
- if (strcasecmp (elf64_s390_vtinherit_howto.name, r_name) == 0)
- return &elf64_s390_vtinherit_howto;
- if (strcasecmp (elf64_s390_vtentry_howto.name, r_name) == 0)
- return &elf64_s390_vtentry_howto;
- return NULL;
- }
- /* We need to use ELF64_R_TYPE so we have our own copy of this function,
- and elf64-s390.c has its own copy. */
- static void
- elf_s390_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *cache_ptr,
- Elf_Internal_Rela *dst)
- {
- unsigned int r_type = ELF64_R_TYPE(dst->r_info);
- switch (r_type)
- {
- case R_390_GNU_VTINHERIT:
- cache_ptr->howto = &elf64_s390_vtinherit_howto;
- break;
- case R_390_GNU_VTENTRY:
- cache_ptr->howto = &elf64_s390_vtentry_howto;
- break;
- default:
- if (r_type >= sizeof (elf_howto_table) / sizeof (elf_howto_table[0]))
- {
- (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
- abfd, (int) r_type);
- r_type = R_390_NONE;
- }
- cache_ptr->howto = &elf_howto_table[r_type];
- }
- }
- /* A relocation function which doesn't do anything. */
- static bfd_reloc_status_type
- s390_tls_reloc (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *reloc_entry,
- asymbol *symbol ATTRIBUTE_UNUSED,
- void * data ATTRIBUTE_UNUSED,
- asection *input_section,
- bfd *output_bfd,
- char **error_message ATTRIBUTE_UNUSED)
- {
- if (output_bfd)
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- /* Handle the large displacement relocs. */
- static bfd_reloc_status_type
- s390_elf_ldisp_reloc (bfd *abfd,
- arelent *reloc_entry,
- asymbol *symbol,
- void * data,
- asection *input_section,
- bfd *output_bfd,
- char **error_message ATTRIBUTE_UNUSED)
- {
- reloc_howto_type *howto = reloc_entry->howto;
- bfd_vma relocation;
- bfd_vma insn;
- if (output_bfd != (bfd *) NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && (! howto->partial_inplace
- || reloc_entry->addend == 0))
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- if (output_bfd != NULL)
- return bfd_reloc_continue;
- if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
- return bfd_reloc_outofrange;
- relocation = (symbol->value
- + symbol->section->output_section->vma
- + symbol->section->output_offset);
- relocation += reloc_entry->addend;
- if (howto->pc_relative)
- {
- relocation -= (input_section->output_section->vma
- + input_section->output_offset);
- relocation -= reloc_entry->address;
- }
- insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
- insn |= (relocation & 0xfff) << 16 | (relocation & 0xff000) >> 4;
- bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
- if ((bfd_signed_vma) relocation < - 0x80000
- || (bfd_signed_vma) relocation > 0x7ffff)
- return bfd_reloc_overflow;
- else
- return bfd_reloc_ok;
- }
- static bfd_boolean
- elf_s390_is_local_label_name (bfd *abfd, const char *name)
- {
- if (name[0] == '.' && (name[1] == 'X' || name[1] == 'L'))
- return TRUE;
- return _bfd_elf_is_local_label_name (abfd, name);
- }
- /* Functions for the 390 ELF linker. */
- /* The name of the dynamic interpreter. This is put in the .interp
- section. */
- #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1"
- /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
- copying dynamic variables from a shared lib into an app's dynbss
- section, and instead use a dynamic relocation to point into the
- shared lib. */
- #define ELIMINATE_COPY_RELOCS 1
- /* The size in bytes of the first entry in the procedure linkage table. */
- #define PLT_FIRST_ENTRY_SIZE 32
- /* The size in bytes of an entry in the procedure linkage table. */
- #define PLT_ENTRY_SIZE 32
- #define GOT_ENTRY_SIZE 8
- #define RELA_ENTRY_SIZE sizeof (Elf64_External_Rela)
- /* The first three entries in a procedure linkage table are reserved,
- and the initial contents are unimportant (we zero them out).
- Subsequent entries look like this. See the SVR4 ABI 386
- supplement to see how this works. */
- /* For the s390, simple addr offset can only be 0 - 4096.
- To use the full 16777216 TB address space, several instructions
- are needed to load an address in a register and execute
- a branch( or just saving the address)
- Furthermore, only r 0 and 1 are free to use!!! */
- /* The first 3 words in the GOT are then reserved.
- Word 0 is the address of the dynamic table.
- Word 1 is a pointer to a structure describing the object
- Word 2 is used to point to the loader entry address.
- The code for PLT entries looks like this:
- The GOT holds the address in the PLT to be executed.
- The loader then gets:
- 24(15) = Pointer to the structure describing the object.
- 28(15) = Offset in symbol table
- The loader must then find the module where the function is
- and insert the address in the GOT.
- PLT1: LARL 1,<fn>@GOTENT # 6 bytes Load address of GOT entry in r1
- LG 1,0(1) # 6 bytes Load address from GOT in r1
- BCR 15,1 # 2 bytes Jump to address
- RET1: BASR 1,0 # 2 bytes Return from GOT 1st time
- LGF 1,12(1) # 6 bytes Load offset in symbl table in r1
- BRCL 15,-x # 6 bytes Jump to start of PLT
- .long ? # 4 bytes offset into .rela.plt
- Total = 32 bytes per PLT entry
- Fixup at offset 2: relative address to GOT entry
- Fixup at offset 22: relative branch to PLT0
- Fixup at offset 28: 32 bit offset into .rela.plt
- A 32 bit offset into the symbol table is enough. It allows for
- .rela.plt sections up to a size of 2 gigabyte. A single dynamic
- object (the main program, any shared library) is limited to 4GB in
- size. Having a .rela.plt of 2GB would already make the .plt
- section bigger than 8GB. */
- static const bfd_byte elf_s390x_plt_entry[PLT_ENTRY_SIZE] =
- {
- 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
- 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1,0(%r1) */
- 0x07, 0xf1, /* br %r1 */
- 0x0d, 0x10, /* basr %r1,%r0 */
- 0xe3, 0x10, 0x10, 0x0c, 0x00, 0x14, /* lgf %r1,12(%r1) */
- 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg first plt */
- 0x00, 0x00, 0x00, 0x00 /* .long 0x00000000 */
- };
- /* The first PLT entry pushes the offset into the symbol table
- from R1 onto the stack at 56(15) and the loader object info
- at 48(15), loads the loader address in R1 and jumps to it. */
- /* The first entry in the PLT:
- PLT0:
- STG 1,56(15) # r1 contains the offset into the symbol table
- LARL 1,_GLOBAL_OFFSET_TABLE # load address of global offset table
- MVC 48(8,15),8(1) # move loader ino (object struct address) to stack
- LG 1,16(1) # get entry address of loader
- BCR 15,1 # jump to loader
- Fixup at offset 8: relative address to start of GOT. */
- static const bfd_byte elf_s390x_first_plt_entry[PLT_FIRST_ENTRY_SIZE] =
- {
- 0xe3, 0x10, 0xf0, 0x38, 0x00, 0x24, /* stg %r1,56(%r15) */
- 0xc0, 0x10, 0x00, 0x00, 0x00, 0x00, /* larl %r1,. */
- 0xd2, 0x07, 0xf0, 0x30, 0x10, 0x08, /* mvc 48(8,%r15),8(%r1) */
- 0xe3, 0x10, 0x10, 0x10, 0x00, 0x04, /* lg %r1,16(%r1) */
- 0x07, 0xf1, /* br %r1 */
- 0x07, 0x00, /* nopr %r0 */
- 0x07, 0x00, /* nopr %r0 */
- 0x07, 0x00 /* nopr %r0 */
- };
- /* s390 ELF linker hash entry. */
- struct elf_s390_link_hash_entry
- {
- struct elf_link_hash_entry elf;
- /* Track dynamic relocs copied for this symbol. */
- struct elf_dyn_relocs *dyn_relocs;
- /* Number of GOTPLT references for a function. */
- bfd_signed_vma gotplt_refcount;
- #define GOT_UNKNOWN 0
- #define GOT_NORMAL 1
- #define GOT_TLS_GD 2
- #define GOT_TLS_IE 3
- #define GOT_TLS_IE_NLT 3
- unsigned char tls_type;
- /* For pointer equality reasons we might need to change the symbol
- type from STT_GNU_IFUNC to STT_FUNC together with its value and
- section entry. So after alloc_dynrelocs only these values should
- be used. In order to check whether a symbol is IFUNC use
- s390_is_ifunc_symbol_p. */
- bfd_vma ifunc_resolver_address;
- asection *ifunc_resolver_section;
- };
- #define elf_s390_hash_entry(ent) \
- ((struct elf_s390_link_hash_entry *)(ent))
- /* This structure represents an entry in the local PLT list needed for
- local IFUNC symbols. */
- struct plt_entry
- {
- /* The section of the local symbol.
- Set in relocate_section and used in finish_dynamic_sections. */
- asection *sec;
- union
- {
- bfd_signed_vma refcount;
- bfd_vma offset;
- } plt;
- };
- /* NOTE: Keep this structure in sync with
- the one declared in elf32-s390.c. */
- struct elf_s390_obj_tdata
- {
- struct elf_obj_tdata root;
- /* A local PLT is needed for ifunc symbols. */
- struct plt_entry *local_plt;
- /* TLS type for each local got entry. */
- char *local_got_tls_type;
- };
- #define elf_s390_tdata(abfd) \
- ((struct elf_s390_obj_tdata *) (abfd)->tdata.any)
- #define elf_s390_local_plt(abfd) \
- (elf_s390_tdata (abfd)->local_plt)
- #define elf_s390_local_got_tls_type(abfd) \
- (elf_s390_tdata (abfd)->local_got_tls_type)
- #define is_s390_elf(bfd) \
- (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
- && elf_tdata (bfd) != NULL \
- && elf_object_id (bfd) == S390_ELF_DATA)
- static bfd_boolean
- elf_s390_mkobject (bfd *abfd)
- {
- return bfd_elf_allocate_object (abfd, sizeof (struct elf_s390_obj_tdata),
- S390_ELF_DATA);
- }
- static bfd_boolean
- elf_s390_object_p (bfd *abfd)
- {
- /* Set the right machine number for an s390 elf32 file. */
- return bfd_default_set_arch_mach (abfd, bfd_arch_s390, bfd_mach_s390_64);
- }
- /* s390 ELF linker hash table. */
- struct elf_s390_link_hash_table
- {
- struct elf_link_hash_table elf;
- /* Short-cuts to get to dynamic linker sections. */
- asection *sdynbss;
- asection *srelbss;
- asection *irelifunc;
- union {
- bfd_signed_vma refcount;
- bfd_vma offset;
- } tls_ldm_got;
- /* Small local sym cache. */
- struct sym_cache sym_cache;
- };
- /* Get the s390 ELF linker hash table from a link_info structure. */
- #define elf_s390_hash_table(p) \
- (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
- == S390_ELF_DATA ? ((struct elf_s390_link_hash_table *) ((p)->hash)) : NULL)
- #define ELF64 1
- #include "elf-s390-common.c"
- /* Create an entry in an s390 ELF linker hash table. */
- static struct bfd_hash_entry *
- link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
- {
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (entry == NULL)
- {
- entry = bfd_hash_allocate (table,
- sizeof (struct elf_s390_link_hash_entry));
- if (entry == NULL)
- return entry;
- }
- /* Call the allocation method of the superclass. */
- entry = _bfd_elf_link_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct elf_s390_link_hash_entry *eh;
- eh = (struct elf_s390_link_hash_entry *) entry;
- eh->dyn_relocs = NULL;
- eh->gotplt_refcount = 0;
- eh->tls_type = GOT_UNKNOWN;
- eh->ifunc_resolver_address = 0;
- eh->ifunc_resolver_section = NULL;
- }
- return entry;
- }
- /* Create an s390 ELF linker hash table. */
- static struct bfd_link_hash_table *
- elf_s390_link_hash_table_create (bfd *abfd)
- {
- struct elf_s390_link_hash_table *ret;
- bfd_size_type amt = sizeof (struct elf_s390_link_hash_table);
- ret = (struct elf_s390_link_hash_table *) bfd_zmalloc (amt);
- if (ret == NULL)
- return NULL;
- if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
- sizeof (struct elf_s390_link_hash_entry),
- S390_ELF_DATA))
- {
- free (ret);
- return NULL;
- }
- return &ret->elf.root;
- }
- /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
- shortcuts to them in our hash table. */
- static bfd_boolean
- create_got_section (bfd *dynobj,
- struct bfd_link_info *info)
- {
- struct elf_s390_link_hash_table *htab;
- if (! _bfd_elf_create_got_section (dynobj, info))
- return FALSE;
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- htab->elf.sgot = bfd_get_linker_section (dynobj, ".got");
- htab->elf.sgotplt = bfd_get_linker_section (dynobj, ".got.plt");
- htab->elf.srelgot = bfd_get_linker_section (dynobj, ".rela.got");
- if (!htab->elf.sgot || !htab->elf.sgotplt || !htab->elf.srelgot)
- abort ();
- return TRUE;
- }
- /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
- .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
- hash table. */
- static bfd_boolean
- elf_s390_create_dynamic_sections (bfd *dynobj,
- struct bfd_link_info *info)
- {
- struct elf_s390_link_hash_table *htab;
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- if (!htab->elf.sgot && !create_got_section (dynobj, info))
- return FALSE;
- if (!_bfd_elf_create_dynamic_sections (dynobj, info))
- return FALSE;
- htab->elf.splt = bfd_get_linker_section (dynobj, ".plt");
- htab->elf.srelplt = bfd_get_linker_section (dynobj, ".rela.plt");
- htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
- if (!bfd_link_pic (info))
- htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
- if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
- || (!bfd_link_pic (info) && !htab->srelbss))
- abort ();
- return TRUE;
- }
- /* Copy the extra info we tack onto an elf_link_hash_entry. */
- static void
- elf_s390_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
- {
- struct elf_s390_link_hash_entry *edir, *eind;
- edir = (struct elf_s390_link_hash_entry *) dir;
- eind = (struct elf_s390_link_hash_entry *) ind;
- if (eind->dyn_relocs != NULL)
- {
- if (edir->dyn_relocs != NULL)
- {
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
- /* Add reloc counts against the indirect sym to the direct sym
- list. Merge any entries against the same section. */
- for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
- {
- struct elf_dyn_relocs *q;
- for (q = edir->dyn_relocs; q != NULL; q = q->next)
- if (q->sec == p->sec)
- {
- q->pc_count += p->pc_count;
- q->count += p->count;
- *pp = p->next;
- break;
- }
- if (q == NULL)
- pp = &p->next;
- }
- *pp = edir->dyn_relocs;
- }
- edir->dyn_relocs = eind->dyn_relocs;
- eind->dyn_relocs = NULL;
- }
- if (ind->root.type == bfd_link_hash_indirect
- && dir->got.refcount <= 0)
- {
- edir->tls_type = eind->tls_type;
- eind->tls_type = GOT_UNKNOWN;
- }
- if (ELIMINATE_COPY_RELOCS
- && ind->root.type != bfd_link_hash_indirect
- && dir->dynamic_adjusted)
- {
- /* If called to transfer flags for a weakdef during processing
- of elf_adjust_dynamic_symbol, don't copy non_got_ref.
- We clear it ourselves for ELIMINATE_COPY_RELOCS. */
- dir->ref_dynamic |= ind->ref_dynamic;
- dir->ref_regular |= ind->ref_regular;
- dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
- dir->needs_plt |= ind->needs_plt;
- }
- else
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
- }
- static int
- elf_s390_tls_transition (struct bfd_link_info *info,
- int r_type,
- int is_local)
- {
- if (bfd_link_pic (info))
- return r_type;
- switch (r_type)
- {
- case R_390_TLS_GD64:
- case R_390_TLS_IE64:
- if (is_local)
- return R_390_TLS_LE64;
- return R_390_TLS_IE64;
- case R_390_TLS_GOTIE64:
- if (is_local)
- return R_390_TLS_LE64;
- return R_390_TLS_GOTIE64;
- case R_390_TLS_LDM64:
- return R_390_TLS_LE64;
- }
- return r_type;
- }
- /* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table or procedure linkage
- table. */
- static bfd_boolean
- elf_s390_check_relocs (bfd *abfd,
- struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
- {
- struct elf_s390_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- asection *sreloc;
- bfd_signed_vma *local_got_refcounts;
- int tls_type, old_tls_type;
- if (bfd_link_relocatable (info))
- return TRUE;
- BFD_ASSERT (is_s390_elf (abfd));
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- symtab_hdr = &elf_symtab_hdr (abfd);
- sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
- sreloc = NULL;
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned int r_type;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *isym;
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
- {
- (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
- abfd,
- r_symndx);
- return FALSE;
- }
- if (r_symndx < symtab_hdr->sh_info)
- {
- /* A local symbol. */
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
- if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
- {
- struct plt_entry *plt;
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
- if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
- return FALSE;
- if (local_got_refcounts == NULL)
- {
- if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
- return FALSE;
- local_got_refcounts = elf_local_got_refcounts (abfd);
- }
- plt = elf_s390_local_plt (abfd);
- plt[r_symndx].plt.refcount++;
- }
- h = NULL;
- }
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- /* PR15323, ref flags aren't set for references in the same
- object. */
- h->root.non_ir_ref = 1;
- }
- /* Create got section and local_got_refcounts array if they
- are needed. */
- r_type = elf_s390_tls_transition (info,
- ELF64_R_TYPE (rel->r_info),
- h == NULL);
- switch (r_type)
- {
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT20:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTENT:
- case R_390_GOTPLT12:
- case R_390_GOTPLT16:
- case R_390_GOTPLT20:
- case R_390_GOTPLT32:
- case R_390_GOTPLT64:
- case R_390_GOTPLTENT:
- case R_390_TLS_GD64:
- case R_390_TLS_GOTIE12:
- case R_390_TLS_GOTIE20:
- case R_390_TLS_GOTIE64:
- case R_390_TLS_IEENT:
- case R_390_TLS_IE64:
- case R_390_TLS_LDM64:
- if (h == NULL
- && local_got_refcounts == NULL)
- {
- if (!elf_s390_allocate_local_syminfo (abfd, symtab_hdr))
- return FALSE;
- local_got_refcounts = elf_local_got_refcounts (abfd);
- }
- /* Fall through. */
- case R_390_GOTOFF16:
- case R_390_GOTOFF32:
- case R_390_GOTOFF64:
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- if (htab->elf.sgot == NULL)
- {
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
- if (!create_got_section (htab->elf.dynobj, info))
- return FALSE;
- }
- }
- if (h != NULL)
- {
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
- if (!s390_elf_create_ifunc_sections (htab->elf.dynobj, info))
- return FALSE;
- /* Make sure an IFUNC symbol defined in a non-shared object
- always gets a PLT slot. */
- if (s390_is_ifunc_symbol_p (h) && h->def_regular)
- {
- /* The symbol is called by the dynamic loader in order
- to resolve the relocation. So it is in fact also
- referenced. */
- h->ref_regular = 1;
- h->needs_plt = 1;
- }
- }
- switch (r_type)
- {
- case R_390_GOTOFF16:
- case R_390_GOTOFF32:
- case R_390_GOTOFF64:
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- /* These relocs do not need a GOT slot. They just load the
- GOT pointer itself or address something else relative to
- the GOT. Since the GOT pointer has been set up above we
- are done. */
- break;
- case R_390_PLT12DBL:
- case R_390_PLT16DBL:
- case R_390_PLT24DBL:
- case R_390_PLT32:
- case R_390_PLT32DBL:
- case R_390_PLT64:
- case R_390_PLTOFF16:
- case R_390_PLTOFF32:
- case R_390_PLTOFF64:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code which is
- never referenced by a dynamic object, in which case we
- don't need to generate a procedure linkage table entry
- after all. */
- /* If this is a local symbol, we resolve it directly without
- creating a procedure linkage table entry. */
- if (h != NULL)
- {
- h->needs_plt = 1;
- h->plt.refcount += 1;
- }
- break;
- case R_390_GOTPLT12:
- case R_390_GOTPLT16:
- case R_390_GOTPLT20:
- case R_390_GOTPLT32:
- case R_390_GOTPLT64:
- case R_390_GOTPLTENT:
- /* This symbol requires either a procedure linkage table entry
- or an entry in the local got. We actually build the entry
- in adjust_dynamic_symbol because whether this is really a
- global reference can change and with it the fact if we have
- to create a plt entry or a local got entry. To be able to
- make a once global symbol a local one we have to keep track
- of the number of gotplt references that exist for this
- symbol. */
- if (h != NULL)
- {
- ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount++;
- h->needs_plt = 1;
- h->plt.refcount += 1;
- }
- else
- local_got_refcounts[r_symndx] += 1;
- break;
- case R_390_TLS_LDM64:
- htab->tls_ldm_got.refcount += 1;
- break;
- case R_390_TLS_IE64:
- case R_390_TLS_GOTIE12:
- case R_390_TLS_GOTIE20:
- case R_390_TLS_GOTIE64:
- case R_390_TLS_IEENT:
- if (bfd_link_pic (info))
- info->flags |= DF_STATIC_TLS;
- /* Fall through */
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT20:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTENT:
- case R_390_TLS_GD64:
- /* This symbol requires a global offset table entry. */
- switch (r_type)
- {
- default:
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT20:
- case R_390_GOT32:
- case R_390_GOTENT:
- tls_type = GOT_NORMAL;
- break;
- case R_390_TLS_GD64:
- tls_type = GOT_TLS_GD;
- break;
- case R_390_TLS_IE64:
- case R_390_TLS_GOTIE64:
- tls_type = GOT_TLS_IE;
- break;
- case R_390_TLS_GOTIE12:
- case R_390_TLS_GOTIE20:
- case R_390_TLS_IEENT:
- tls_type = GOT_TLS_IE_NLT;
- break;
- }
- if (h != NULL)
- {
- h->got.refcount += 1;
- old_tls_type = elf_s390_hash_entry(h)->tls_type;
- }
- else
- {
- local_got_refcounts[r_symndx] += 1;
- old_tls_type = elf_s390_local_got_tls_type (abfd) [r_symndx];
- }
- /* If a TLS symbol is accessed using IE at least once,
- there is no point to use dynamic model for it. */
- if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN)
- {
- if (old_tls_type == GOT_NORMAL || tls_type == GOT_NORMAL)
- {
- (*_bfd_error_handler)
- (_("%B: `%s' accessed both as normal and thread local symbol"),
- abfd, h->root.root.string);
- return FALSE;
- }
- if (old_tls_type > tls_type)
- tls_type = old_tls_type;
- }
- if (old_tls_type != tls_type)
- {
- if (h != NULL)
- elf_s390_hash_entry (h)->tls_type = tls_type;
- else
- elf_s390_local_got_tls_type (abfd) [r_symndx] = tls_type;
- }
- if (r_type != R_390_TLS_IE64)
- break;
- /* Fall through */
- case R_390_TLS_LE64:
- /* For static linking and executables this reloc will be
- calculated at linktime otherwise a TLS_TPOFF runtime
- reloc will be generated. */
- if (r_type == R_390_TLS_LE64 && bfd_link_pie (info))
- break;
- if (!bfd_link_pic (info))
- break;
- info->flags |= DF_STATIC_TLS;
- /* Fall through */
- case R_390_8:
- case R_390_16:
- case R_390_32:
- case R_390_64:
- case R_390_PC12DBL:
- case R_390_PC16:
- case R_390_PC16DBL:
- case R_390_PC24DBL:
- case R_390_PC32:
- case R_390_PC32DBL:
- case R_390_PC64:
- if (h != NULL)
- {
- /* If this reloc is in a read-only section, we might
- need a copy reloc. We can't check reliably at this
- stage whether the section is read-only, as input
- sections have not yet been mapped to output sections.
- Tentatively set the flag for now, and correct in
- adjust_dynamic_symbol. */
- h->non_got_ref = 1;
- if (!bfd_link_pic (info))
- {
- /* We may need a .plt entry if the function this reloc
- refers to is in a shared lib. */
- h->plt.refcount += 1;
- }
- }
- /* If we are creating a shared library, and this is a reloc
- against a global symbol, or a non PC relative reloc
- against a local symbol, then we need to copy the reloc
- into the shared library. However, if we are linking with
- -Bsymbolic, we do not need to copy a reloc against a
- global symbol which is defined in an object we are
- including in the link (i.e., DEF_REGULAR is set). At
- this point we have not seen all the input files, so it is
- possible that DEF_REGULAR is not set now but will be set
- later (it is never cleared). In case of a weak definition,
- DEF_REGULAR may be cleared later by a strong definition in
- a shared library. We account for that possibility below by
- storing information in the relocs_copied field of the hash
- table entry. A similar situation occurs when creating
- shared libraries and symbol visibility changes render the
- symbol local.
- If on the other hand, we are creating an executable, we
- may need to keep relocations for symbols satisfied by a
- dynamic library if we manage to avoid copy relocs for the
- symbol. */
- if ((bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16
- && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL
- && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL
- && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL
- && ELF64_R_TYPE (rel->r_info) != R_390_PC32
- && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL
- && ELF64_R_TYPE (rel->r_info) != R_390_PC64)
- || (h != NULL
- && (! SYMBOLIC_BIND (info, h)
- || h->root.type == bfd_link_hash_defweak
- || !h->def_regular))))
- || (ELIMINATE_COPY_RELOCS
- && !bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && h != NULL
- && (h->root.type == bfd_link_hash_defweak
- || !h->def_regular)))
- {
- struct elf_dyn_relocs *p;
- struct elf_dyn_relocs **head;
- /* We must copy these reloc types into the output file.
- Create a reloc section in dynobj and make room for
- this reloc. */
- if (sreloc == NULL)
- {
- if (htab->elf.dynobj == NULL)
- htab->elf.dynobj = abfd;
- sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
- if (sreloc == NULL)
- return FALSE;
- }
- /* If this is a global symbol, we count the number of
- relocations we need for this symbol. */
- if (h != NULL)
- {
- head = &((struct elf_s390_link_hash_entry *) h)->dyn_relocs;
- }
- else
- {
- /* Track dynamic relocs needed for local syms too.
- We really need local syms available to do this
- easily. Oh well. */
- asection *s;
- void *vpp;
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
- s = bfd_section_from_elf_index (abfd, isym->st_shndx);
- if (s == NULL)
- s = sec;
- vpp = &elf_section_data (s)->local_dynrel;
- head = (struct elf_dyn_relocs **) vpp;
- }
- p = *head;
- if (p == NULL || p->sec != sec)
- {
- bfd_size_type amt = sizeof *p;
- p = ((struct elf_dyn_relocs *)
- bfd_alloc (htab->elf.dynobj, amt));
- if (p == NULL)
- return FALSE;
- p->next = *head;
- *head = p;
- p->sec = sec;
- p->count = 0;
- p->pc_count = 0;
- }
- p->count += 1;
- if (ELF64_R_TYPE (rel->r_info) == R_390_PC16
- || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL
- || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
- || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL
- || ELF64_R_TYPE (rel->r_info) == R_390_PC32
- || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL
- || ELF64_R_TYPE (rel->r_info) == R_390_PC64)
- p->pc_count += 1;
- }
- break;
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- case R_390_GNU_VTINHERIT:
- if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return FALSE;
- break;
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- case R_390_GNU_VTENTRY:
- BFD_ASSERT (h != NULL);
- if (h != NULL
- && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return FALSE;
- break;
- default:
- break;
- }
- }
- return TRUE;
- }
- /* Return the section that should be marked against GC for a given
- relocation. */
- static asection *
- elf_s390_gc_mark_hook (asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- if (h != NULL)
- switch (ELF64_R_TYPE (rel->r_info))
- {
- case R_390_GNU_VTINHERIT:
- case R_390_GNU_VTENTRY:
- return NULL;
- }
- return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
- }
- /* Update the got entry reference counts for the section being removed. */
- static bfd_boolean
- elf_s390_gc_sweep_hook (bfd *abfd,
- struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
- {
- struct elf_s390_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_signed_vma *local_got_refcounts;
- const Elf_Internal_Rela *rel, *relend;
- if (bfd_link_relocatable (info))
- return TRUE;
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- elf_section_data (sec)->local_dynrel = NULL;
- symtab_hdr = &elf_symtab_hdr (abfd);
- sym_hashes = elf_sym_hashes (abfd);
- local_got_refcounts = elf_local_got_refcounts (abfd);
- relend = relocs + sec->reloc_count;
- for (rel = relocs; rel < relend; rel++)
- {
- unsigned long r_symndx;
- unsigned int r_type;
- struct elf_link_hash_entry *h = NULL;
- r_symndx = ELF64_R_SYM (rel->r_info);
- if (r_symndx >= symtab_hdr->sh_info)
- {
- struct elf_s390_link_hash_entry *eh;
- struct elf_dyn_relocs **pp;
- struct elf_dyn_relocs *p;
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- eh = (struct elf_s390_link_hash_entry *) h;
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
- if (p->sec == sec)
- {
- /* Everything must go for SEC. */
- *pp = p->next;
- break;
- }
- }
- else
- {
- Elf_Internal_Sym *isym;
- /* A local symbol. */
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return FALSE;
- if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
- {
- struct plt_entry *plt = elf_s390_local_plt (abfd);
- if (plt[r_symndx].plt.refcount > 0)
- plt[r_symndx].plt.refcount--;
- }
- }
- r_type = ELF64_R_TYPE (rel->r_info);
- r_type = elf_s390_tls_transition (info, r_type, h != NULL);
- switch (r_type)
- {
- case R_390_TLS_LDM64:
- if (htab->tls_ldm_got.refcount > 0)
- htab->tls_ldm_got.refcount -= 1;
- break;
- case R_390_GOTOFF16:
- case R_390_GOTOFF32:
- case R_390_GOTOFF64:
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- break;
- case R_390_TLS_GD64:
- case R_390_TLS_IE64:
- case R_390_TLS_GOTIE12:
- case R_390_TLS_GOTIE20:
- case R_390_TLS_GOTIE64:
- case R_390_TLS_IEENT:
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT20:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTENT:
- if (h != NULL)
- {
- if (h->got.refcount > 0)
- h->got.refcount -= 1;
- }
- else if (local_got_refcounts != NULL)
- {
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx] -= 1;
- }
- break;
- case R_390_8:
- case R_390_12:
- case R_390_16:
- case R_390_20:
- case R_390_32:
- case R_390_64:
- case R_390_PC16:
- case R_390_PC12DBL:
- case R_390_PC16DBL:
- case R_390_PC24DBL:
- case R_390_PC32:
- case R_390_PC32DBL:
- case R_390_PC64:
- if (bfd_link_pic (info))
- break;
- /* Fall through */
- case R_390_PLT12DBL:
- case R_390_PLT16DBL:
- case R_390_PLT24DBL:
- case R_390_PLT32:
- case R_390_PLT32DBL:
- case R_390_PLT64:
- case R_390_PLTOFF16:
- case R_390_PLTOFF32:
- case R_390_PLTOFF64:
- if (h != NULL)
- {
- if (h->plt.refcount > 0)
- h->plt.refcount -= 1;
- }
- break;
- case R_390_GOTPLT12:
- case R_390_GOTPLT16:
- case R_390_GOTPLT20:
- case R_390_GOTPLT32:
- case R_390_GOTPLT64:
- case R_390_GOTPLTENT:
- if (h != NULL)
- {
- if (h->plt.refcount > 0)
- {
- ((struct elf_s390_link_hash_entry *) h)->gotplt_refcount--;
- h->plt.refcount -= 1;
- }
- }
- else if (local_got_refcounts != NULL)
- {
- if (local_got_refcounts[r_symndx] > 0)
- local_got_refcounts[r_symndx] -= 1;
- }
- break;
- default:
- break;
- }
- }
- return TRUE;
- }
- /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
- entry but we found we will not create any. Called when we find we will
- not have any PLT for this symbol, by for example
- elf_s390_adjust_dynamic_symbol when we're doing a proper dynamic link,
- or elf_s390_size_dynamic_sections if no dynamic sections will be
- created (we're only linking static objects). */
- static void
- elf_s390_adjust_gotplt (struct elf_s390_link_hash_entry *h)
- {
- if (h->elf.root.type == bfd_link_hash_warning)
- h = (struct elf_s390_link_hash_entry *) h->elf.root.u.i.link;
- if (h->gotplt_refcount <= 0)
- return;
- /* We simply add the number of gotplt references to the number
- * of got references for this symbol. */
- h->elf.got.refcount += h->gotplt_refcount;
- h->gotplt_refcount = -1;
- }
- /* Adjust a symbol defined by a dynamic object and referenced by a
- regular object. The current definition is in some section of the
- dynamic object, but we're not including those sections. We have to
- change the definition to something the rest of the link can
- understand. */
- static bfd_boolean
- elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
- {
- struct elf_s390_link_hash_table *htab;
- asection *s;
- /* STT_GNU_IFUNC symbol must go through PLT. */
- if (s390_is_ifunc_symbol_p (h))
- return TRUE;
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later
- (although we could actually do it here). */
- if (h->type == STT_FUNC
- || h->needs_plt)
- {
- if (h->plt.refcount <= 0
- || SYMBOL_CALLS_LOCAL (info, h)
- || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- && h->root.type == bfd_link_hash_undefweak))
- {
- /* This case can occur if we saw a PLT32 reloc in an input
- file, but the symbol was never referred to by a dynamic
- object, or if all references were garbage collected. In
- such a case, we don't actually need to build a procedure
- linkage table, and we can just do a PC32 reloc instead. */
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
- }
- return TRUE;
- }
- else
- /* It's possible that we incorrectly decided a .plt reloc was
- needed for an R_390_PC32 reloc to a non-function sym in
- check_relocs. We can't decide accurately between function and
- non-function syms in check-relocs; Objects loaded later in
- the link may change h->type. So fix it now. */
- h->plt.offset = (bfd_vma) -1;
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->u.weakdef != NULL)
- {
- BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
- || h->u.weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->u.weakdef->root.u.def.section;
- h->root.u.def.value = h->u.weakdef->root.u.def.value;
- if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
- h->non_got_ref = h->u.weakdef->non_got_ref;
- return TRUE;
- }
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. */
- /* If we are creating a shared library, we must presume that the
- only references to the symbol are via the global offset table.
- For such cases we need not do anything here; the relocations will
- be handled correctly by relocate_section. */
- if (bfd_link_pic (info))
- return TRUE;
- /* If there are no references to this symbol that do not use the
- GOT, we don't need to generate a copy reloc. */
- if (!h->non_got_ref)
- return TRUE;
- /* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
- {
- h->non_got_ref = 0;
- return TRUE;
- }
- if (ELIMINATE_COPY_RELOCS)
- {
- struct elf_s390_link_hash_entry * eh;
- struct elf_dyn_relocs *p;
- eh = (struct elf_s390_link_hash_entry *) h;
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- s = p->sec->output_section;
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- break;
- }
- /* If we didn't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (p == NULL)
- {
- h->non_got_ref = 0;
- return TRUE;
- }
- }
- /* We must allocate the symbol in our .dynbss section, which will
- become part of the .bss section of the executable. There will be
- an entry for this symbol in the .dynsym section. The dynamic
- object will contain position independent code, so all references
- from the dynamic object to this symbol will go through the global
- offset table. The dynamic linker will use the .dynsym entry to
- determine the address it must put in the global offset table, so
- both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- /* We must generate a R_390_COPY reloc to tell the dynamic linker to
- copy the initial value out of the dynamic object and into the
- runtime process image. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
- {
- htab->srelbss->size += sizeof (Elf64_External_Rela);
- h->needs_copy = 1;
- }
- s = htab->sdynbss;
- return _bfd_elf_adjust_dynamic_copy (info, h, s);
- }
- /* Allocate space in .plt, .got and associated reloc sections for
- dynamic relocs. */
- static bfd_boolean
- allocate_dynrelocs (struct elf_link_hash_entry *h,
- void * inf)
- {
- struct bfd_link_info *info;
- struct elf_s390_link_hash_table *htab;
- struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry *)h;
- struct elf_dyn_relocs *p;
- if (h->root.type == bfd_link_hash_indirect)
- return TRUE;
- info = (struct bfd_link_info *) inf;
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
- here if it is defined and referenced in a non-shared object. */
- if (s390_is_ifunc_symbol_p (h) && h->def_regular)
- return s390_elf_allocate_ifunc_dyn_relocs (info, h,
- &eh->dyn_relocs);
- else if (htab->elf.dynamic_sections_created
- && h->plt.refcount > 0)
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
- if (bfd_link_pic (info)
- || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
- {
- asection *s = htab->elf.splt;
- /* If this is the first .plt entry, make room for the special
- first entry. */
- if (s->size == 0)
- s->size += PLT_FIRST_ENTRY_SIZE;
- h->plt.offset = s->size;
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! bfd_link_pic (info)
- && !h->def_regular)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = h->plt.offset;
- }
- /* Make room for this entry. */
- s->size += PLT_ENTRY_SIZE;
- /* We also need to make an entry in the .got.plt section, which
- will be placed in the .got section by the linker script. */
- htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
- /* We also need to make an entry in the .rela.plt section. */
- htab->elf.srelplt->size += sizeof (Elf64_External_Rela);
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
- }
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- elf_s390_adjust_gotplt((struct elf_s390_link_hash_entry *) h);
- }
- /* If R_390_TLS_{IE64,GOTIE64,GOTIE12,IEENT} symbol is now local to
- the binary, we can optimize a bit. IE64 and GOTIE64 get converted
- to R_390_TLS_LE64 requiring no TLS entry. For GOTIE12 and IEENT
- we can save the dynamic TLS relocation. */
- if (h->got.refcount > 0
- && !bfd_link_pic (info)
- && h->dynindx == -1
- && elf_s390_hash_entry(h)->tls_type >= GOT_TLS_IE)
- {
- if (elf_s390_hash_entry(h)->tls_type == GOT_TLS_IE_NLT)
- /* For the GOTIE access without a literal pool entry the offset has
- to be stored somewhere. The immediate value in the instruction
- is not bit enough so the value is stored in the got. */
- {
- h->got.offset = htab->elf.sgot->size;
- htab->elf.sgot->size += GOT_ENTRY_SIZE;
- }
- else
- h->got.offset = (bfd_vma) -1;
- }
- else if (h->got.refcount > 0)
- {
- asection *s;
- bfd_boolean dyn;
- int tls_type = elf_s390_hash_entry(h)->tls_type;
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
- s = htab->elf.sgot;
- h->got.offset = s->size;
- s->size += GOT_ENTRY_SIZE;
- /* R_390_TLS_GD64 needs 2 consecutive GOT slots. */
- if (tls_type == GOT_TLS_GD)
- s->size += GOT_ENTRY_SIZE;
- dyn = htab->elf.dynamic_sections_created;
- /* R_390_TLS_IE64 needs one dynamic relocation,
- R_390_TLS_GD64 needs one if local symbol and two if global. */
- if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
- || tls_type >= GOT_TLS_IE)
- htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
- else if (tls_type == GOT_TLS_GD)
- htab->elf.srelgot->size += 2 * sizeof (Elf64_External_Rela);
- else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak)
- && (bfd_link_pic (info)
- || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
- htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
- }
- else
- h->got.offset = (bfd_vma) -1;
- if (eh->dyn_relocs == NULL)
- return TRUE;
- /* In the shared -Bsymbolic case, discard space allocated for
- dynamic pc-relative relocs against symbols which turn out to be
- defined in regular objects. For the normal shared case, discard
- space for pc-relative relocs that have become local due to symbol
- visibility changes. */
- if (bfd_link_pic (info))
- {
- if (SYMBOL_CALLS_LOCAL (info, h))
- {
- struct elf_dyn_relocs **pp;
- for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
- {
- p->count -= p->pc_count;
- p->pc_count = 0;
- if (p->count == 0)
- *pp = p->next;
- else
- pp = &p->next;
- }
- }
- /* Also discard relocs on undefined weak syms with non-default
- visibility. */
- if (eh->dyn_relocs != NULL
- && h->root.type == bfd_link_hash_undefweak)
- {
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- eh->dyn_relocs = NULL;
- /* Make sure undefined weak symbols are output as a dynamic
- symbol in PIEs. */
- else if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
- }
- }
- else if (ELIMINATE_COPY_RELOCS)
- {
- /* For the non-shared case, discard space for relocs against
- symbols which turn out to need copy relocs or are not
- dynamic. */
- if (!h->non_got_ref
- && ((h->def_dynamic
- && !h->def_regular)
- || (htab->elf.dynamic_sections_created
- && (h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_undefined))))
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return FALSE;
- }
- /* If that succeeded, we know we'll be keeping all the
- relocs. */
- if (h->dynindx != -1)
- goto keep;
- }
- eh->dyn_relocs = NULL;
- keep: ;
- }
- /* Finally, allocate space. */
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- asection *sreloc = elf_section_data (p->sec)->sreloc;
- sreloc->size += p->count * sizeof (Elf64_External_Rela);
- }
- return TRUE;
- }
- /* Find any dynamic relocs that apply to read-only sections. */
- static bfd_boolean
- readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
- {
- struct elf_s390_link_hash_entry *eh;
- struct elf_dyn_relocs *p;
- eh = (struct elf_s390_link_hash_entry *) h;
- for (p = eh->dyn_relocs; p != NULL; p = p->next)
- {
- asection *s = p->sec->output_section;
- if (s != NULL && (s->flags & SEC_READONLY) != 0)
- {
- struct bfd_link_info *info = (struct bfd_link_info *) inf;
- info->flags |= DF_TEXTREL;
- /* Not an error, just cut short the traversal. */
- return FALSE;
- }
- }
- return TRUE;
- }
- /* Set the sizes of the dynamic sections. */
- static bfd_boolean
- elf_s390_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
- {
- struct elf_s390_link_hash_table *htab;
- bfd *dynobj;
- asection *s;
- bfd_boolean relocs;
- bfd *ibfd;
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- dynobj = htab->elf.dynobj;
- if (dynobj == NULL)
- abort ();
- if (htab->elf.dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (bfd_link_executable (info) && !info->nointerp)
- {
- s = bfd_get_linker_section (dynobj, ".interp");
- if (s == NULL)
- abort ();
- s->size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- }
- /* Set up .got offsets for local syms, and space for local dynamic
- relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
- {
- bfd_signed_vma *local_got;
- bfd_signed_vma *end_local_got;
- char *local_tls_type;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
- asection *srela;
- struct plt_entry *local_plt;
- unsigned int i;
- if (! is_s390_elf (ibfd))
- continue;
- for (s = ibfd->sections; s != NULL; s = s->next)
- {
- struct elf_dyn_relocs *p;
- for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
- {
- if (!bfd_is_abs_section (p->sec)
- && bfd_is_abs_section (p->sec->output_section))
- {
- /* Input section has been discarded, either because
- it is a copy of a linkonce section or due to
- linker script /DISCARD/, so we'll be discarding
- the relocs too. */
- }
- else if (p->count != 0)
- {
- srela = elf_section_data (p->sec)->sreloc;
- srela->size += p->count * sizeof (Elf64_External_Rela);
- if ((p->sec->output_section->flags & SEC_READONLY) != 0)
- info->flags |= DF_TEXTREL;
- }
- }
- }
- local_got = elf_local_got_refcounts (ibfd);
- if (!local_got)
- continue;
- symtab_hdr = &elf_symtab_hdr (ibfd);
- locsymcount = symtab_hdr->sh_info;
- end_local_got = local_got + locsymcount;
- local_tls_type = elf_s390_local_got_tls_type (ibfd);
- s = htab->elf.sgot;
- srela = htab->elf.srelgot;
- for (; local_got < end_local_got; ++local_got, ++local_tls_type)
- {
- if (*local_got > 0)
- {
- *local_got = s->size;
- s->size += GOT_ENTRY_SIZE;
- if (*local_tls_type == GOT_TLS_GD)
- s->size += GOT_ENTRY_SIZE;
- if (bfd_link_pic (info))
- srela->size += sizeof (Elf64_External_Rela);
- }
- else
- *local_got = (bfd_vma) -1;
- }
- local_plt = elf_s390_local_plt (ibfd);
- for (i = 0; i < symtab_hdr->sh_info; i++)
- {
- if (local_plt[i].plt.refcount > 0)
- {
- local_plt[i].plt.offset = htab->elf.iplt->size;
- htab->elf.iplt->size += PLT_ENTRY_SIZE;
- htab->elf.igotplt->size += GOT_ENTRY_SIZE;
- htab->elf.irelplt->size += sizeof (Elf64_External_Rela);
- }
- else
- local_plt[i].plt.offset = (bfd_vma) -1;
- }
- }
- if (htab->tls_ldm_got.refcount > 0)
- {
- /* Allocate 2 got entries and 1 dynamic reloc for R_390_TLS_LDM64
- relocs. */
- htab->tls_ldm_got.offset = htab->elf.sgot->size;
- htab->elf.sgot->size += 2 * GOT_ENTRY_SIZE;
- htab->elf.srelgot->size += sizeof (Elf64_External_Rela);
- }
- else
- htab->tls_ldm_got.offset = -1;
- /* Allocate global sym .plt and .got entries, and space for global
- sym dynamic relocs. */
- elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
- /* We now have determined the sizes of the various dynamic sections.
- Allocate memory for them. */
- relocs = FALSE;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
- if (s == htab->elf.splt
- || s == htab->elf.sgot
- || s == htab->elf.sgotplt
- || s == htab->sdynbss
- || s == htab->elf.iplt
- || s == htab->elf.igotplt
- || s == htab->irelifunc)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- }
- else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
- {
- if (s->size != 0 && s != htab->elf.srelplt)
- relocs = TRUE;
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- else
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
- if (s->size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is to handle .rela.bss and
- .rela.plt. We must create it in
- create_dynamic_sections, because it must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- s->flags |= SEC_EXCLUDE;
- continue;
- }
- if ((s->flags & SEC_HAS_CONTENTS) == 0)
- continue;
- /* Allocate memory for the section contents. We use bfd_zalloc
- here in case unused entries are not reclaimed before the
- section's contents are written out. This should not happen,
- but this way if it does, we get a R_390_NONE reloc instead
- of garbage. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL)
- return FALSE;
- }
- if (htab->elf.dynamic_sections_created)
- {
- /* Add some entries to the .dynamic section. We fill in the
- values later, in elf_s390_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
- #define add_dynamic_entry(TAG, VAL) \
- _bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (bfd_link_executable (info))
- {
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return FALSE;
- }
- if (htab->elf.splt->size != 0)
- {
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_RELA)
- || !add_dynamic_entry (DT_JMPREL, 0))
- return FALSE;
- }
- if (relocs)
- {
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
- return FALSE;
- /* If any dynamic relocs apply to a read-only section,
- then we need a DT_TEXTREL entry. */
- if ((info->flags & DF_TEXTREL) == 0)
- elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
- info);
- if ((info->flags & DF_TEXTREL) != 0)
- {
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return FALSE;
- }
- }
- }
- #undef add_dynamic_entry
- return TRUE;
- }
- /* Return the base VMA address which should be subtracted from real addresses
- when resolving @dtpoff relocation.
- This is PT_TLS segment p_vaddr. */
- static bfd_vma
- dtpoff_base (struct bfd_link_info *info)
- {
- /* If tls_sec is NULL, we should have signalled an error already. */
- if (elf_hash_table (info)->tls_sec == NULL)
- return 0;
- return elf_hash_table (info)->tls_sec->vma;
- }
- /* Return the relocation value for @tpoff relocation
- if STT_TLS virtual address is ADDRESS. */
- static bfd_vma
- tpoff (struct bfd_link_info *info, bfd_vma address)
- {
- struct elf_link_hash_table *htab = elf_hash_table (info);
- /* If tls_sec is NULL, we should have signalled an error already. */
- if (htab->tls_sec == NULL)
- return 0;
- return htab->tls_size + htab->tls_sec->vma - address;
- }
- /* Complain if TLS instruction relocation is against an invalid
- instruction. */
- static void
- invalid_tls_insn (bfd *input_bfd,
- asection *input_section,
- Elf_Internal_Rela *rel)
- {
- reloc_howto_type *howto;
- howto = elf_howto_table + ELF64_R_TYPE (rel->r_info);
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): invalid instruction for TLS relocation %s"),
- input_bfd,
- input_section,
- (long) rel->r_offset,
- howto->name);
- bfd_set_error (bfd_error_bad_value);
- }
- /* Relocate a 390 ELF section. */
- static bfd_boolean
- elf_s390_relocate_section (bfd *output_bfd,
- struct bfd_link_info *info,
- bfd *input_bfd,
- asection *input_section,
- bfd_byte *contents,
- Elf_Internal_Rela *relocs,
- Elf_Internal_Sym *local_syms,
- asection **local_sections)
- {
- struct elf_s390_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_vma *local_got_offsets;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
- BFD_ASSERT (is_s390_elf (input_bfd));
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- symtab_hdr = &elf_symtab_hdr (input_bfd);
- sym_hashes = elf_sym_hashes (input_bfd);
- local_got_offsets = elf_local_got_offsets (input_bfd);
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- unsigned int r_type;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- asection *sec;
- bfd_vma off;
- bfd_vma relocation;
- bfd_boolean unresolved_reloc;
- bfd_reloc_status_type r;
- int tls_type;
- asection *base_got = htab->elf.sgot;
- r_type = ELF64_R_TYPE (rel->r_info);
- if (r_type == (int) R_390_GNU_VTINHERIT
- || r_type == (int) R_390_GNU_VTENTRY)
- continue;
- if (r_type >= (int) R_390_max)
- {
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- howto = elf_howto_table + r_type;
- r_symndx = ELF64_R_SYM (rel->r_info);
- h = NULL;
- sym = NULL;
- sec = NULL;
- unresolved_reloc = FALSE;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
- {
- struct plt_entry *local_plt = elf_s390_local_plt (input_bfd);
- if (local_plt == NULL)
- return FALSE;
- /* Address of the PLT slot. */
- relocation = (htab->elf.iplt->output_section->vma
- + htab->elf.iplt->output_offset
- + local_plt[r_symndx].plt.offset);
- switch (r_type)
- {
- case R_390_PLTOFF16:
- case R_390_PLTOFF32:
- case R_390_PLTOFF64:
- relocation -= htab->elf.sgot->output_section->vma;
- break;
- case R_390_GOTPLT12:
- case R_390_GOTPLT16:
- case R_390_GOTPLT20:
- case R_390_GOTPLT32:
- case R_390_GOTPLT64:
- case R_390_GOTPLTENT:
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT20:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTENT:
- {
- /* Write the PLT slot address into the GOT slot. */
- bfd_put_64 (output_bfd, relocation,
- htab->elf.sgot->contents +
- local_got_offsets[r_symndx]);
- relocation = (local_got_offsets[r_symndx] +
- htab->elf.sgot->output_offset);
- if (r_type == R_390_GOTENT || r_type == R_390_GOTPLTENT)
- relocation += htab->elf.sgot->output_section->vma;
- break;
- }
- default:
- break;
- }
- /* The output section is needed later in
- finish_dynamic_section when creating the dynamic
- relocation. */
- local_plt[r_symndx].sec = sec;
- goto do_relocation;
- }
- else
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
- }
- else
- {
- bfd_boolean warned ATTRIBUTE_UNUSED;
- bfd_boolean ignored ATTRIBUTE_UNUSED;
- RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
- r_symndx, symtab_hdr, sym_hashes,
- h, sec, relocation,
- unresolved_reloc, warned, ignored);
- }
- if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend, howto, 0, contents);
- if (bfd_link_relocatable (info))
- continue;
- switch (r_type)
- {
- case R_390_GOTPLT12:
- case R_390_GOTPLT16:
- case R_390_GOTPLT20:
- case R_390_GOTPLT32:
- case R_390_GOTPLT64:
- case R_390_GOTPLTENT:
- /* There are three cases for a GOTPLT relocation. 1) The
- relocation is against the jump slot entry of a plt that
- will get emitted to the output file. 2) The relocation
- is against the jump slot of a plt entry that has been
- removed. elf_s390_adjust_gotplt has created a GOT entry
- as replacement. 3) The relocation is against a local symbol.
- Cases 2) and 3) are the same as the GOT relocation code
- so we just have to test for case 1 and fall through for
- the other two. */
- if (h != NULL && h->plt.offset != (bfd_vma) -1)
- {
- bfd_vma plt_index;
- if (s390_is_ifunc_symbol_p (h))
- {
- plt_index = h->plt.offset / PLT_ENTRY_SIZE;
- relocation = (plt_index * GOT_ENTRY_SIZE +
- htab->elf.igotplt->output_offset);
- if (r_type == R_390_GOTPLTENT)
- relocation += htab->elf.igotplt->output_section->vma;
- }
- else
- {
- /* Calc. index no.
- Current offset - size first entry / entry size. */
- plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) /
- PLT_ENTRY_SIZE;
- /* Offset in GOT is PLT index plus GOT headers(3)
- times 4, addr & GOT addr. */
- relocation = (plt_index + 3) * GOT_ENTRY_SIZE;
- if (r_type == R_390_GOTPLTENT)
- relocation += htab->elf.sgot->output_section->vma;
- }
- unresolved_reloc = FALSE;
- break;
- }
- /* Fall through. */
- case R_390_GOT12:
- case R_390_GOT16:
- case R_390_GOT20:
- case R_390_GOT32:
- case R_390_GOT64:
- case R_390_GOTENT:
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- if (base_got == NULL)
- abort ();
- if (h != NULL)
- {
- bfd_boolean dyn;
- off = h->got.offset;
- dyn = htab->elf.dynamic_sections_created;
- if (s390_is_ifunc_symbol_p (h))
- {
- BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
- if (off == (bfd_vma)-1)
- {
- /* No explicit GOT usage so redirect to the
- got.iplt slot. */
- base_got = htab->elf.igotplt;
- off = h->plt.offset / PLT_ENTRY_SIZE * GOT_ENTRY_SIZE;
- }
- else
- {
- /* Explicit GOT slots must contain the address
- of the PLT slot. This will be handled in
- finish_dynamic_symbol. */
- }
- }
- else if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h)
- || (bfd_link_pic (info)
- && SYMBOL_REFERENCES_LOCAL (info, h))
- || (ELF_ST_VISIBILITY (h->other)
- && h->root.type == bfd_link_hash_undefweak))
- {
- /* This is actually a static link, or it is a
- -Bsymbolic link and the symbol is defined
- locally, or the symbol was forced to be local
- because of a version file. We must initialize
- this entry in the global offset table. Since the
- offset must always be a multiple of 2, we use the
- least significant bit to record whether we have
- initialized it already.
- When doing a dynamic link, we create a .rel.got
- relocation entry to initialize the value. This
- is done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation,
- base_got->contents + off);
- h->got.offset |= 1;
- }
- if ((h->def_regular
- && bfd_link_pic (info)
- && SYMBOL_REFERENCES_LOCAL (info, h))
- /* lgrl rx,sym@GOTENT -> larl rx, sym */
- && ((r_type == R_390_GOTENT
- && (bfd_get_16 (input_bfd,
- contents + rel->r_offset - 2)
- & 0xff0f) == 0xc408)
- /* lg rx, sym@GOT(r12) -> larl rx, sym */
- || (r_type == R_390_GOT20
- && (bfd_get_32 (input_bfd,
- contents + rel->r_offset - 2)
- & 0xff00f000) == 0xe300c000
- && bfd_get_8 (input_bfd,
- contents + rel->r_offset + 3) == 0x04)))
- {
- unsigned short new_insn =
- (0xc000 | (bfd_get_8 (input_bfd,
- contents + rel->r_offset - 1) & 0xf0));
- bfd_put_16 (output_bfd, new_insn,
- contents + rel->r_offset - 2);
- r_type = R_390_PC32DBL;
- rel->r_addend = 2;
- howto = elf_howto_table + r_type;
- relocation = h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset;
- goto do_relocation;
- }
- }
- else
- unresolved_reloc = FALSE;
- }
- else
- {
- if (local_got_offsets == NULL)
- abort ();
- off = local_got_offsets[r_symndx];
- /* The offset must always be a multiple of 8. We use
- the least significant bit to record whether we have
- already generated the necessary reloc. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_64 (output_bfd, relocation,
- htab->elf.sgot->contents + off);
- if (bfd_link_pic (info))
- {
- asection *s;
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- s = htab->elf.srelgot;
- if (s == NULL)
- abort ();
- outrel.r_offset = (htab->elf.sgot->output_section->vma
- + htab->elf.sgot->output_offset
- + off);
- outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
- outrel.r_addend = relocation;
- loc = s->contents;
- loc += s->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- }
- local_got_offsets[r_symndx] |= 1;
- }
- }
- if (off >= (bfd_vma) -2)
- abort ();
- relocation = base_got->output_offset + off;
- /* For @GOTENT the relocation is against the offset between
- the instruction and the symbols entry in the GOT and not
- between the start of the GOT and the symbols entry. We
- add the vma of the GOT to get the correct value. */
- if ( r_type == R_390_GOTENT
- || r_type == R_390_GOTPLTENT)
- relocation += base_got->output_section->vma;
- break;
- case R_390_GOTOFF16:
- case R_390_GOTOFF32:
- case R_390_GOTOFF64:
- /* Relocation is relative to the start of the global offset
- table. */
- /* Note that sgot->output_offset is not involved in this
- calculation. We always want the start of .got. If we
- defined _GLOBAL_OFFSET_TABLE in a different way, as is
- permitted by the ABI, we might have to change this
- calculation. */
- relocation -= htab->elf.sgot->output_section->vma;
- break;
- case R_390_GOTPC:
- case R_390_GOTPCDBL:
- /* Use global offset table as symbol value. */
- relocation = htab->elf.sgot->output_section->vma;
- unresolved_reloc = FALSE;
- break;
- case R_390_PLT12DBL:
- case R_390_PLT16DBL:
- case R_390_PLT24DBL:
- case R_390_PLT32:
- case R_390_PLT32DBL:
- case R_390_PLT64:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table. */
- /* Resolve a PLT32 reloc against a local symbol directly,
- without using the procedure linkage table. */
- if (h == NULL)
- break;
- if (h->plt.offset == (bfd_vma) -1
- || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
- {
- /* We didn't make a PLT entry for this symbol. This
- happens when statically linking PIC code, or when
- using -Bsymbolic. */
- break;
- }
- if (s390_is_ifunc_symbol_p (h))
- relocation = (htab->elf.iplt->output_section->vma
- + htab->elf.iplt->output_offset
- + h->plt.offset);
- else
- relocation = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + h->plt.offset);
- unresolved_reloc = FALSE;
- break;
- case R_390_PLTOFF16:
- case R_390_PLTOFF32:
- case R_390_PLTOFF64:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table relative to the start of the GOT. */
- /* For local symbols or if we didn't make a PLT entry for
- this symbol resolve the symbol directly. */
- if (h == NULL
- || h->plt.offset == (bfd_vma) -1
- || (htab->elf.splt == NULL && !s390_is_ifunc_symbol_p (h)))
- {
- relocation -= htab->elf.sgot->output_section->vma;
- break;
- }
- if (s390_is_ifunc_symbol_p (h))
- relocation = (htab->elf.iplt->output_section->vma
- + htab->elf.iplt->output_offset
- + h->plt.offset
- - htab->elf.sgot->output_section->vma);
- else
- relocation = (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + h->plt.offset
- - htab->elf.sgot->output_section->vma);
- unresolved_reloc = FALSE;
- break;
- case R_390_8:
- case R_390_16:
- case R_390_32:
- case R_390_64:
- case R_390_PC16:
- case R_390_PC12DBL:
- case R_390_PC16DBL:
- case R_390_PC24DBL:
- case R_390_PC32:
- case R_390_PC32DBL:
- case R_390_PC64:
- if (h != NULL
- && s390_is_ifunc_symbol_p (h)
- && h->def_regular)
- {
- if (!bfd_link_pic (info) || !h->non_got_ref)
- {
- /* For a non-shared object STT_GNU_IFUNC symbol must
- go through PLT. */
- relocation = (htab->elf.iplt->output_section->vma
- + htab->elf.iplt->output_offset
- + h ->plt.offset);
- goto do_relocation;
- }
- else
- {
- /* For shared objects a runtime relocation is needed. */
- Elf_Internal_Rela outrel;
- asection *sreloc;
- /* Need a dynamic relocation to get the real function
- address. */
- outrel.r_offset = _bfd_elf_section_offset (output_bfd,
- info,
- input_section,
- rel->r_offset);
- if (outrel.r_offset == (bfd_vma) -1
- || outrel.r_offset == (bfd_vma) -2)
- abort ();
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- if (h->dynindx == -1
- || h->forced_local
- || bfd_link_executable (info))
- {
- /* This symbol is resolved locally. */
- outrel.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
- outrel.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- }
- else
- {
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
- outrel.r_addend = 0;
- }
- sreloc = htab->elf.irelifunc;
- elf_append_rela (output_bfd, sreloc, &outrel);
- /* If this reloc is against an external symbol, we
- do not want to fiddle with the addend. Otherwise,
- we need to include the symbol value so that it
- becomes an addend for the dynamic reloc. For an
- internal symbol, we have updated addend. */
- continue;
- }
- }
- if ((input_section->flags & SEC_ALLOC) == 0)
- break;
- if ((bfd_link_pic (info)
- && (h == NULL
- || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak)
- && ((r_type != R_390_PC16
- && r_type != R_390_PC12DBL
- && r_type != R_390_PC16DBL
- && r_type != R_390_PC24DBL
- && r_type != R_390_PC32
- && r_type != R_390_PC32DBL
- && r_type != R_390_PC64)
- || !SYMBOL_CALLS_LOCAL (info, h)))
- || (ELIMINATE_COPY_RELOCS
- && !bfd_link_pic (info)
- && h != NULL
- && h->dynindx != -1
- && !h->non_got_ref
- && ((h->def_dynamic
- && !h->def_regular)
- || h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_undefined)))
- {
- Elf_Internal_Rela outrel;
- bfd_boolean skip, relocate;
- asection *sreloc;
- bfd_byte *loc;
- /* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
- skip = FALSE;
- relocate = FALSE;
- outrel.r_offset =
- _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset);
- if (outrel.r_offset == (bfd_vma) -1)
- skip = TRUE;
- else if (outrel.r_offset == (bfd_vma) -2)
- skip = TRUE, relocate = TRUE;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- else if (h != NULL
- && h->dynindx != -1
- && (r_type == R_390_PC16
- || r_type == R_390_PC12DBL
- || r_type == R_390_PC16DBL
- || r_type == R_390_PC24DBL
- || r_type == R_390_PC32
- || r_type == R_390_PC32DBL
- || r_type == R_390_PC64
- || !bfd_link_pic (info)
- || !SYMBOLIC_BIND (info, h)
- || !h->def_regular))
- {
- outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
- outrel.r_addend = rel->r_addend;
- }
- else
- {
- /* This symbol is local, or marked to become local. */
- outrel.r_addend = relocation + rel->r_addend;
- if (r_type == R_390_64)
- {
- relocate = TRUE;
- outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
- }
- else
- {
- long sindx;
- if (bfd_is_abs_section (sec))
- sindx = 0;
- else if (sec == NULL || sec->owner == NULL)
- {
- bfd_set_error(bfd_error_bad_value);
- return FALSE;
- }
- else
- {
- asection *osec;
- osec = sec->output_section;
- sindx = elf_section_data (osec)->dynindx;
- if (sindx == 0)
- {
- osec = htab->elf.text_index_section;
- sindx = elf_section_data (osec)->dynindx;
- }
- BFD_ASSERT (sindx != 0);
- /* We are turning this relocation into one
- against a section symbol, so subtract out
- the output section's address but not the
- offset of the input section in the output
- section. */
- outrel.r_addend -= osec->vma;
- }
- outrel.r_info = ELF64_R_INFO (sindx, r_type);
- }
- }
- sreloc = elf_section_data (input_section)->sreloc;
- if (sreloc == NULL)
- abort ();
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- /* If this reloc is against an external symbol, we do
- not want to fiddle with the addend. Otherwise, we
- need to include the symbol value so that it becomes
- an addend for the dynamic reloc. */
- if (! relocate)
- continue;
- }
- break;
- /* Relocations for tls literal pool entries. */
- case R_390_TLS_IE64:
- if (bfd_link_pic (info))
- {
- Elf_Internal_Rela outrel;
- asection *sreloc;
- bfd_byte *loc;
- outrel.r_offset = rel->r_offset
- + input_section->output_section->vma
- + input_section->output_offset;
- outrel.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
- sreloc = elf_section_data (input_section)->sreloc;
- if (sreloc == NULL)
- abort ();
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloc_out (output_bfd, &outrel, loc);
- }
- /* Fall through. */
- case R_390_TLS_GD64:
- case R_390_TLS_GOTIE64:
- r_type = elf_s390_tls_transition (info, r_type, h == NULL);
- tls_type = GOT_UNKNOWN;
- if (h == NULL && local_got_offsets)
- tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
- else if (h != NULL)
- {
- tls_type = elf_s390_hash_entry(h)->tls_type;
- if (!bfd_link_pic (info) && h->dynindx == -1 && tls_type >= GOT_TLS_IE)
- r_type = R_390_TLS_LE64;
- }
- if (r_type == R_390_TLS_GD64 && tls_type >= GOT_TLS_IE)
- r_type = R_390_TLS_IE64;
- if (r_type == R_390_TLS_LE64)
- {
- /* This relocation gets optimized away by the local exec
- access optimization. */
- BFD_ASSERT (! unresolved_reloc);
- bfd_put_64 (output_bfd, -tpoff (info, relocation),
- contents + rel->r_offset);
- continue;
- }
- if (htab->elf.sgot == NULL)
- abort ();
- if (h != NULL)
- off = h->got.offset;
- else
- {
- if (local_got_offsets == NULL)
- abort ();
- off = local_got_offsets[r_symndx];
- }
- emit_tls_relocs:
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- int dr_type, indx;
- if (htab->elf.srelgot == NULL)
- abort ();
- outrel.r_offset = (htab->elf.sgot->output_section->vma
- + htab->elf.sgot->output_offset + off);
- indx = h && h->dynindx != -1 ? h->dynindx : 0;
- if (r_type == R_390_TLS_GD64)
- dr_type = R_390_TLS_DTPMOD;
- else
- dr_type = R_390_TLS_TPOFF;
- if (dr_type == R_390_TLS_TPOFF && indx == 0)
- outrel.r_addend = relocation - dtpoff_base (info);
- else
- outrel.r_addend = 0;
- outrel.r_info = ELF64_R_INFO (indx, dr_type);
- loc = htab->elf.srelgot->contents;
- loc += htab->elf.srelgot->reloc_count++
- * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- if (r_type == R_390_TLS_GD64)
- {
- if (indx == 0)
- {
- BFD_ASSERT (! unresolved_reloc);
- bfd_put_64 (output_bfd,
- relocation - dtpoff_base (info),
- htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
- }
- else
- {
- outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_DTPOFF);
- outrel.r_offset += GOT_ENTRY_SIZE;
- outrel.r_addend = 0;
- htab->elf.srelgot->reloc_count++;
- loc += sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- }
- }
- if (h != NULL)
- h->got.offset |= 1;
- else
- local_got_offsets[r_symndx] |= 1;
- }
- if (off >= (bfd_vma) -2)
- abort ();
- if (r_type == ELF64_R_TYPE (rel->r_info))
- {
- relocation = htab->elf.sgot->output_offset + off;
- if (r_type == R_390_TLS_IE64 || r_type == R_390_TLS_IEENT)
- relocation += htab->elf.sgot->output_section->vma;
- unresolved_reloc = FALSE;
- }
- else
- {
- bfd_put_64 (output_bfd, htab->elf.sgot->output_offset + off,
- contents + rel->r_offset);
- continue;
- }
- break;
- case R_390_TLS_GOTIE12:
- case R_390_TLS_GOTIE20:
- case R_390_TLS_IEENT:
- if (h == NULL)
- {
- if (local_got_offsets == NULL)
- abort();
- off = local_got_offsets[r_symndx];
- if (bfd_link_pic (info))
- goto emit_tls_relocs;
- }
- else
- {
- off = h->got.offset;
- tls_type = elf_s390_hash_entry(h)->tls_type;
- if (bfd_link_pic (info) || h->dynindx != -1 || tls_type < GOT_TLS_IE)
- goto emit_tls_relocs;
- }
- if (htab->elf.sgot == NULL)
- abort ();
- BFD_ASSERT (! unresolved_reloc);
- bfd_put_64 (output_bfd, -tpoff (info, relocation),
- htab->elf.sgot->contents + off);
- relocation = htab->elf.sgot->output_offset + off;
- if (r_type == R_390_TLS_IEENT)
- relocation += htab->elf.sgot->output_section->vma;
- unresolved_reloc = FALSE;
- break;
- case R_390_TLS_LDM64:
- if (! bfd_link_pic (info))
- /* The literal pool entry this relocation refers to gets ignored
- by the optimized code of the local exec model. Do nothing
- and the value will turn out zero. */
- continue;
- if (htab->elf.sgot == NULL)
- abort ();
- off = htab->tls_ldm_got.offset;
- if (off & 1)
- off &= ~1;
- else
- {
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- if (htab->elf.srelgot == NULL)
- abort ();
- outrel.r_offset = (htab->elf.sgot->output_section->vma
- + htab->elf.sgot->output_offset + off);
- bfd_put_64 (output_bfd, 0,
- htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
- outrel.r_info = ELF64_R_INFO (0, R_390_TLS_DTPMOD);
- outrel.r_addend = 0;
- loc = htab->elf.srelgot->contents;
- loc += htab->elf.srelgot->reloc_count++
- * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- htab->tls_ldm_got.offset |= 1;
- }
- relocation = htab->elf.sgot->output_offset + off;
- unresolved_reloc = FALSE;
- break;
- case R_390_TLS_LE64:
- if (bfd_link_dll (info))
- {
- /* Linking a shared library with non-fpic code requires
- a R_390_TLS_TPOFF relocation. */
- Elf_Internal_Rela outrel;
- asection *sreloc;
- bfd_byte *loc;
- int indx;
- outrel.r_offset = rel->r_offset
- + input_section->output_section->vma
- + input_section->output_offset;
- if (h != NULL && h->dynindx != -1)
- indx = h->dynindx;
- else
- indx = 0;
- outrel.r_info = ELF64_R_INFO (indx, R_390_TLS_TPOFF);
- if (indx == 0)
- outrel.r_addend = relocation - dtpoff_base (info);
- else
- outrel.r_addend = 0;
- sreloc = elf_section_data (input_section)->sreloc;
- if (sreloc == NULL)
- abort ();
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
- }
- else
- {
- BFD_ASSERT (! unresolved_reloc);
- bfd_put_64 (output_bfd, -tpoff (info, relocation),
- contents + rel->r_offset);
- }
- continue;
- case R_390_TLS_LDO64:
- if (bfd_link_pic (info) || (input_section->flags & SEC_DEBUGGING))
- relocation -= dtpoff_base (info);
- else
- /* When converting LDO to LE, we must negate. */
- relocation = -tpoff (info, relocation);
- break;
- /* Relocations for tls instructions. */
- case R_390_TLS_LOAD:
- case R_390_TLS_GDCALL:
- case R_390_TLS_LDCALL:
- tls_type = GOT_UNKNOWN;
- if (h == NULL && local_got_offsets)
- tls_type = elf_s390_local_got_tls_type (input_bfd) [r_symndx];
- else if (h != NULL)
- tls_type = elf_s390_hash_entry(h)->tls_type;
- if (tls_type == GOT_TLS_GD)
- continue;
- if (r_type == R_390_TLS_LOAD)
- {
- if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
- {
- /* IE->LE transition. Four valid cases:
- lg %rx,(0,%ry) -> sllg %rx,%ry,0
- lg %rx,(%ry,0) -> sllg %rx,%ry,0
- lg %rx,(%ry,%r12) -> sllg %rx,%ry,0
- lg %rx,(%r12,%ry) -> sllg %rx,%ry,0 */
- unsigned int insn0, insn1, ry;
- insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
- insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
- if (insn1 != 0x0004)
- invalid_tls_insn (input_bfd, input_section, rel);
- ry = 0;
- if ((insn0 & 0xff00f000) == 0xe3000000)
- /* lg %rx,0(%ry,0) -> sllg %rx,%ry,0 */
- ry = (insn0 & 0x000f0000);
- else if ((insn0 & 0xff0f0000) == 0xe3000000)
- /* lg %rx,0(0,%ry) -> sllg %rx,%ry,0 */
- ry = (insn0 & 0x0000f000) << 4;
- else if ((insn0 & 0xff00f000) == 0xe300c000)
- /* lg %rx,0(%ry,%r12) -> sllg %rx,%ry,0 */
- ry = (insn0 & 0x000f0000);
- else if ((insn0 & 0xff0f0000) == 0xe30c0000)
- /* lg %rx,0(%r12,%ry) -> sllg %rx,%ry,0 */
- ry = (insn0 & 0x0000f000) << 4;
- else
- invalid_tls_insn (input_bfd, input_section, rel);
- insn0 = 0xeb000000 | (insn0 & 0x00f00000) | ry;
- insn1 = 0x000d;
- bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
- bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
- }
- }
- else if (r_type == R_390_TLS_GDCALL)
- {
- unsigned int insn0, insn1;
- insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
- insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
- if ((insn0 & 0xffff0000) != 0xc0e50000)
- invalid_tls_insn (input_bfd, input_section, rel);
- if (!bfd_link_pic (info) && (h == NULL || h->dynindx == -1))
- {
- /* GD->LE transition.
- brasl %r14,__tls_get_addr@plt -> brcl 0,. */
- insn0 = 0xc0040000;
- insn1 = 0x0000;
- }
- else
- {
- /* GD->IE transition.
- brasl %r14,__tls_get_addr@plt -> lg %r2,0(%r2,%r12) */
- insn0 = 0xe322c000;
- insn1 = 0x0004;
- }
- bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
- bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
- }
- else if (r_type == R_390_TLS_LDCALL)
- {
- if (!bfd_link_pic (info))
- {
- unsigned int insn0, insn1;
- insn0 = bfd_get_32 (input_bfd, contents + rel->r_offset);
- insn1 = bfd_get_16 (input_bfd, contents + rel->r_offset + 4);
- if ((insn0 & 0xffff0000) != 0xc0e50000)
- invalid_tls_insn (input_bfd, input_section, rel);
- /* LD->LE transition.
- brasl %r14,__tls_get_addr@plt -> brcl 0,. */
- insn0 = 0xc0040000;
- insn1 = 0x0000;
- bfd_put_32 (output_bfd, insn0, contents + rel->r_offset);
- bfd_put_16 (output_bfd, insn1, contents + rel->r_offset + 4);
- }
- }
- continue;
- default:
- break;
- }
- /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
- because such sections are not SEC_ALLOC and thus ld.so will
- not process them. */
- if (unresolved_reloc
- && !((input_section->flags & SEC_DEBUGGING) != 0
- && h->def_dynamic)
- && _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset) != (bfd_vma) -1)
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
- input_bfd,
- input_section,
- (long) rel->r_offset,
- howto->name,
- h->root.root.string);
- do_relocation:
- /* When applying a 24 bit reloc we need to start one byte
- earlier. Otherwise the 32 bit get/put bfd operations might
- access a byte after the actual section. */
- if (r_type == R_390_PC24DBL
- || r_type == R_390_PLT24DBL)
- rel->r_offset--;
- if (r_type == R_390_20
- || r_type == R_390_GOT20
- || r_type == R_390_GOTPLT20
- || r_type == R_390_TLS_GOTIE20)
- {
- relocation += rel->r_addend;
- relocation = (relocation&0xfff) << 8 | (relocation&0xff000) >> 12;
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, 0);
- }
- else
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend);
- if (r != bfd_reloc_ok)
- {
- const char *name;
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- return FALSE;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
- if (r == bfd_reloc_overflow)
- {
- if (! ((*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section,
- rel->r_offset)))
- return FALSE;
- }
- else
- {
- (*_bfd_error_handler)
- (_("%B(%A+0x%lx): reloc against `%s': error %d"),
- input_bfd, input_section,
- (long) rel->r_offset, name, (int) r);
- return FALSE;
- }
- }
- }
- return TRUE;
- }
- /* Generate the PLT slots together with the dynamic relocations needed
- for IFUNC symbols. */
- static void
- elf_s390_finish_ifunc_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- struct elf_s390_link_hash_table *htab,
- bfd_vma plt_offset,
- bfd_vma resolver_address)
- {
- bfd_vma plt_index;
- bfd_vma got_offset;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
- asection *plt, *gotplt, *relplt;
- if (htab->elf.iplt == NULL
- || htab->elf.igotplt == NULL
- || htab->elf.irelplt == NULL)
- abort ();
- /* Index of the PLT slot within iplt section. */
- plt_index = plt_offset / PLT_ENTRY_SIZE;
- plt = htab->elf.iplt;
- /* Offset into the igot.plt section. */
- got_offset = plt_index * GOT_ENTRY_SIZE;
- gotplt = htab->elf.igotplt;
- relplt = htab->elf.irelplt;
- /* Fill in the blueprint of a PLT. */
- memcpy (plt->contents + plt_offset, elf_s390x_plt_entry,
- PLT_ENTRY_SIZE);
- /* Fixup the relative address to the GOT entry */
- bfd_put_32 (output_bfd,
- (gotplt->output_section->vma +
- gotplt->output_offset + got_offset
- - (plt->output_section->vma +
- plt->output_offset +
- plt_offset))/2,
- plt->contents + plt_offset + 2);
- /* Fixup the relative branch to PLT 0 */
- bfd_put_32 (output_bfd, - (plt->output_offset +
- (PLT_ENTRY_SIZE * plt_index) + 22)/2,
- plt->contents + plt_offset + 24);
- /* Fixup offset into .rela.plt section. */
- bfd_put_32 (output_bfd, relplt->output_offset +
- plt_index * sizeof (Elf64_External_Rela),
- plt->contents + plt_offset + 28);
- /* Fill in the entry in the global offset table.
- Points to instruction after GOT offset. */
- bfd_put_64 (output_bfd,
- (plt->output_section->vma
- + plt->output_offset
- + plt_offset
- + 14),
- gotplt->contents + got_offset);
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (gotplt->output_section->vma
- + gotplt->output_offset
- + got_offset);
- if (!h
- || h->dynindx == -1
- || ((bfd_link_executable (info)
- || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- && h->def_regular))
- {
- /* The symbol can be locally resolved. */
- rela.r_info = ELF64_R_INFO (0, R_390_IRELATIVE);
- rela.r_addend = resolver_address;
- }
- else
- {
- rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
- rela.r_addend = 0;
- }
- loc = relplt->contents + plt_index * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
- }
- /* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
- static bfd_boolean
- elf_s390_finish_dynamic_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- struct elf_s390_link_hash_table *htab;
- struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- if (h->plt.offset != (bfd_vma) -1)
- {
- bfd_vma plt_index;
- bfd_vma got_offset;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
- /* This symbol has an entry in the procedure linkage table. Set
- it up. */
- if (s390_is_ifunc_symbol_p (h))
- {
- /* If we can resolve the IFUNC symbol locally we generate an
- IRELATIVE reloc. */
- elf_s390_finish_ifunc_symbol (output_bfd, info, h, htab, h->plt.offset,
- eh->ifunc_resolver_address +
- eh->ifunc_resolver_section->output_offset +
- eh->ifunc_resolver_section->output_section->vma);
- ;
- /* Fallthrough. Handling of explicit GOT slots of IFUNC
- symbols is below. */
- }
- else
- {
- if (h->dynindx == -1
- || htab->elf.splt == NULL
- || htab->elf.sgotplt == NULL
- || htab->elf.srelplt == NULL)
- abort ();
- /* Calc. index no.
- Current offset - size first entry / entry size. */
- plt_index = (h->plt.offset - PLT_FIRST_ENTRY_SIZE) / PLT_ENTRY_SIZE;
- /* Offset in GOT is PLT index plus GOT headers(3) times 8,
- addr & GOT addr. */
- got_offset = (plt_index + 3) * GOT_ENTRY_SIZE;
- /* Fill in the blueprint of a PLT. */
- memcpy (htab->elf.splt->contents + h->plt.offset, elf_s390x_plt_entry,
- PLT_ENTRY_SIZE);
- /* Fixup the relative address to the GOT entry */
- bfd_put_32 (output_bfd,
- (htab->elf.sgotplt->output_section->vma +
- htab->elf.sgotplt->output_offset + got_offset
- - (htab->elf.splt->output_section->vma +
- htab->elf.splt->output_offset +
- h->plt.offset))/2,
- htab->elf.splt->contents + h->plt.offset + 2);
- /* Fixup the relative branch to PLT 0 */
- bfd_put_32 (output_bfd, - (PLT_FIRST_ENTRY_SIZE +
- (PLT_ENTRY_SIZE * plt_index) + 22)/2,
- htab->elf.splt->contents + h->plt.offset + 24);
- /* Fixup offset into .rela.plt section. */
- bfd_put_32 (output_bfd, plt_index * sizeof (Elf64_External_Rela),
- htab->elf.splt->contents + h->plt.offset + 28);
- /* Fill in the entry in the global offset table.
- Points to instruction after GOT offset. */
- bfd_put_64 (output_bfd,
- (htab->elf.splt->output_section->vma
- + htab->elf.splt->output_offset
- + h->plt.offset
- + 14),
- htab->elf.sgotplt->contents + got_offset);
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (htab->elf.sgotplt->output_section->vma
- + htab->elf.sgotplt->output_offset
- + got_offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_390_JMP_SLOT);
- rela.r_addend = 0;
- loc = htab->elf.srelplt->contents + plt_index *
- sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
- if (!h->def_regular)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. This is a clue
- for the dynamic linker, to make function pointer
- comparisons work between an application and shared
- library. */
- sym->st_shndx = SHN_UNDEF;
- }
- }
- }
- if (h->got.offset != (bfd_vma) -1
- && elf_s390_hash_entry(h)->tls_type != GOT_TLS_GD
- && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE
- && elf_s390_hash_entry(h)->tls_type != GOT_TLS_IE_NLT)
- {
- Elf_Internal_Rela rela;
- bfd_byte *loc;
- /* This symbol has an entry in the global offset table. Set it
- up. */
- if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
- abort ();
- rela.r_offset = (htab->elf.sgot->output_section->vma
- + htab->elf.sgot->output_offset
- + (h->got.offset &~ (bfd_vma) 1));
- if (h->def_regular && s390_is_ifunc_symbol_p (h))
- {
- if (bfd_link_pic (info))
- {
- /* An explicit GOT slot usage needs GLOB_DAT. If the
- symbol references local the implicit got.iplt slot
- will be used and the IRELATIVE reloc has been created
- above. */
- goto do_glob_dat;
- }
- else
- {
- /* For non-shared objects explicit GOT slots must be
- filled with the PLT slot address for pointer
- equality reasons. */
- bfd_put_64 (output_bfd, (htab->elf.iplt->output_section->vma
- + htab->elf.iplt->output_offset
- + h->plt.offset),
- htab->elf.sgot->contents + h->got.offset);
- return TRUE;
- }
- }
- else if (bfd_link_pic (info)
- && SYMBOL_REFERENCES_LOCAL (info, h))
- {
- /* If this is a static link, or it is a -Bsymbolic link and
- the symbol is defined locally or was forced to be local
- because of a version file, we just want to emit a
- RELATIVE reloc. The entry in the global offset table
- will already have been initialized in the
- relocate_section function. */
- if (!h->def_regular)
- return FALSE;
- BFD_ASSERT((h->got.offset & 1) != 0);
- rela.r_info = ELF64_R_INFO (0, R_390_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- }
- else
- {
- BFD_ASSERT((h->got.offset & 1) == 0);
- do_glob_dat:
- bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgot->contents + h->got.offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_390_GLOB_DAT);
- rela.r_addend = 0;
- }
- loc = htab->elf.srelgot->contents;
- loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
- }
- if (h->needs_copy)
- {
- Elf_Internal_Rela rela;
- bfd_byte *loc;
- /* This symbols needs a copy reloc. Set it up. */
- if (h->dynindx == -1
- || (h->root.type != bfd_link_hash_defined
- && h->root.type != bfd_link_hash_defweak)
- || htab->srelbss == NULL)
- abort ();
- rela.r_offset = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- rela.r_info = ELF64_R_INFO (h->dynindx, R_390_COPY);
- rela.r_addend = 0;
- loc = htab->srelbss->contents;
- loc += htab->srelbss->reloc_count++ * sizeof (Elf64_External_Rela);
- bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
- }
- /* Mark some specially defined symbols as absolute. */
- if (h == htab->elf.hdynamic
- || h == htab->elf.hgot
- || h == htab->elf.hplt)
- sym->st_shndx = SHN_ABS;
- return TRUE;
- }
- /* Used to decide how to sort relocs in an optimal manner for the
- dynamic linker, before writing them out. */
- static enum elf_reloc_type_class
- elf_s390_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
- const asection *rel_sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela *rela)
- {
- switch ((int) ELF64_R_TYPE (rela->r_info))
- {
- case R_390_RELATIVE:
- return reloc_class_relative;
- case R_390_JMP_SLOT:
- return reloc_class_plt;
- case R_390_COPY:
- return reloc_class_copy;
- default:
- return reloc_class_normal;
- }
- }
- /* Finish up the dynamic sections. */
- static bfd_boolean
- elf_s390_finish_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- struct elf_s390_link_hash_table *htab;
- bfd *dynobj;
- asection *sdyn;
- bfd *ibfd;
- unsigned int i;
- htab = elf_s390_hash_table (info);
- if (htab == NULL)
- return FALSE;
- dynobj = htab->elf.dynobj;
- sdyn = bfd_get_linker_section (dynobj, ".dynamic");
- if (htab->elf.dynamic_sections_created)
- {
- Elf64_External_Dyn *dyncon, *dynconend;
- if (sdyn == NULL || htab->elf.sgot == NULL)
- abort ();
- dyncon = (Elf64_External_Dyn *) sdyn->contents;
- dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
- for (; dyncon < dynconend; dyncon++)
- {
- Elf_Internal_Dyn dyn;
- asection *s;
- bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
- switch (dyn.d_tag)
- {
- default:
- continue;
- case DT_PLTGOT:
- dyn.d_un.d_ptr = htab->elf.sgot->output_section->vma;
- break;
- case DT_JMPREL:
- dyn.d_un.d_ptr = htab->elf.srelplt->output_section->vma;
- break;
- case DT_PLTRELSZ:
- s = htab->elf.srelplt->output_section;
- dyn.d_un.d_val = s->size;
- break;
- case DT_RELASZ:
- /* The procedure linkage table relocs (DT_JMPREL) should
- not be included in the overall relocs (DT_RELA).
- Therefore, we override the DT_RELASZ entry here to
- make it not include the JMPREL relocs. Since the
- linker script arranges for .rela.plt to follow all
- other relocation sections, we don't have to worry
- about changing the DT_RELA entry. */
- s = htab->elf.srelplt->output_section;
- dyn.d_un.d_val -= s->size;
- break;
- }
- bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- /* Fill in the special first entry in the procedure linkage table. */
- if (htab->elf.splt && htab->elf.splt->size > 0)
- {
- /* fill in blueprint for plt 0 entry */
- memcpy (htab->elf.splt->contents, elf_s390x_first_plt_entry,
- PLT_FIRST_ENTRY_SIZE);
- /* Fixup relative address to start of GOT */
- bfd_put_32 (output_bfd,
- (htab->elf.sgotplt->output_section->vma +
- htab->elf.sgotplt->output_offset
- - htab->elf.splt->output_section->vma - 6)/2,
- htab->elf.splt->contents + 8);
- }
- if (elf_section_data (htab->elf.splt->output_section) != NULL)
- elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize
- = PLT_ENTRY_SIZE;
- }
- if (htab->elf.sgotplt)
- {
- /* Fill in the first three entries in the global offset table. */
- if (htab->elf.sgotplt->size > 0)
- {
- bfd_put_64 (output_bfd,
- (sdyn == NULL ? (bfd_vma) 0
- : sdyn->output_section->vma + sdyn->output_offset),
- htab->elf.sgotplt->contents);
- /* One entry for shared object struct ptr. */
- bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 8);
- /* One entry for _dl_runtime_resolve. */
- bfd_put_64 (output_bfd, (bfd_vma) 0, htab->elf.sgotplt->contents + 12);
- }
- elf_section_data (htab->elf.sgot->output_section)
- ->this_hdr.sh_entsize = 8;
- }
- /* Finish dynamic symbol for local IFUNC symbols. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
- {
- struct plt_entry *local_plt;
- Elf_Internal_Sym *isym;
- Elf_Internal_Shdr *symtab_hdr;
- symtab_hdr = &elf_symtab_hdr (ibfd);
- local_plt = elf_s390_local_plt (ibfd);
- if (local_plt != NULL)
- for (i = 0; i < symtab_hdr->sh_info; i++)
- {
- if (local_plt[i].plt.offset != (bfd_vma) -1)
- {
- asection *sec = local_plt[i].sec;
- isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, i);
- if (isym == NULL)
- return FALSE;
- if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
- elf_s390_finish_ifunc_symbol (output_bfd, info, NULL, htab,
- local_plt[i].plt.offset,
- isym->st_value
- + sec->output_section->vma
- + sec->output_offset);
- }
- }
- }
- return TRUE;
- }
- /* Return address for Ith PLT stub in section PLT, for relocation REL
- or (bfd_vma) -1 if it should not be included. */
- static bfd_vma
- elf_s390_plt_sym_val (bfd_vma i, const asection *plt,
- const arelent *rel ATTRIBUTE_UNUSED)
- {
- return plt->vma + PLT_FIRST_ENTRY_SIZE + i * PLT_ENTRY_SIZE;
- }
- /* Merge backend specific data from an object file to the output
- object file when linking. */
- static bfd_boolean
- elf64_s390_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
- {
- if (!is_s390_elf (ibfd) || !is_s390_elf (obfd))
- return TRUE;
- if (!elf_s390_merge_obj_attributes (ibfd, obfd))
- return FALSE;
- return TRUE;
- }
- /* Why was the hash table entry size definition changed from
- ARCH_SIZE/8 to 4? This breaks the 64 bit dynamic linker and
- this is the only reason for the s390_elf64_size_info structure. */
- const struct elf_size_info s390_elf64_size_info =
- {
- sizeof (Elf64_External_Ehdr),
- sizeof (Elf64_External_Phdr),
- sizeof (Elf64_External_Shdr),
- sizeof (Elf64_External_Rel),
- sizeof (Elf64_External_Rela),
- sizeof (Elf64_External_Sym),
- sizeof (Elf64_External_Dyn),
- sizeof (Elf_External_Note),
- 8, /* hash-table entry size. */
- 1, /* internal relocations per external relocations. */
- 64, /* arch_size. */
- 3, /* log_file_align. */
- ELFCLASS64, EV_CURRENT,
- bfd_elf64_write_out_phdrs,
- bfd_elf64_write_shdrs_and_ehdr,
- bfd_elf64_checksum_contents,
- bfd_elf64_write_relocs,
- bfd_elf64_swap_symbol_in,
- bfd_elf64_swap_symbol_out,
- bfd_elf64_slurp_reloc_table,
- bfd_elf64_slurp_symbol_table,
- bfd_elf64_swap_dyn_in,
- bfd_elf64_swap_dyn_out,
- bfd_elf64_swap_reloc_in,
- bfd_elf64_swap_reloc_out,
- bfd_elf64_swap_reloca_in,
- bfd_elf64_swap_reloca_out
- };
- #define TARGET_BIG_SYM s390_elf64_vec
- #define TARGET_BIG_NAME "elf64-s390"
- #define ELF_ARCH bfd_arch_s390
- #define ELF_TARGET_ID S390_ELF_DATA
- #define ELF_MACHINE_CODE EM_S390
- #define ELF_MACHINE_ALT1 EM_S390_OLD
- #define ELF_MAXPAGESIZE 0x1000
- #define elf_backend_size_info s390_elf64_size_info
- #define elf_backend_can_gc_sections 1
- #define elf_backend_can_refcount 1
- #define elf_backend_want_got_plt 1
- #define elf_backend_plt_readonly 1
- #define elf_backend_want_plt_sym 0
- #define elf_backend_got_header_size 24
- #define elf_backend_rela_normal 1
- #define elf_info_to_howto elf_s390_info_to_howto
- #define bfd_elf64_bfd_is_local_label_name elf_s390_is_local_label_name
- #define bfd_elf64_bfd_link_hash_table_create elf_s390_link_hash_table_create
- #define bfd_elf64_bfd_reloc_type_lookup elf_s390_reloc_type_lookup
- #define bfd_elf64_bfd_reloc_name_lookup elf_s390_reloc_name_lookup
- #define bfd_elf64_bfd_merge_private_bfd_data elf64_s390_merge_private_bfd_data
- #define elf_backend_adjust_dynamic_symbol elf_s390_adjust_dynamic_symbol
- #define elf_backend_check_relocs elf_s390_check_relocs
- #define elf_backend_copy_indirect_symbol elf_s390_copy_indirect_symbol
- #define elf_backend_create_dynamic_sections elf_s390_create_dynamic_sections
- #define elf_backend_finish_dynamic_sections elf_s390_finish_dynamic_sections
- #define elf_backend_finish_dynamic_symbol elf_s390_finish_dynamic_symbol
- #define elf_backend_gc_mark_hook elf_s390_gc_mark_hook
- #define elf_backend_gc_sweep_hook elf_s390_gc_sweep_hook
- #define elf_backend_reloc_type_class elf_s390_reloc_type_class
- #define elf_backend_relocate_section elf_s390_relocate_section
- #define elf_backend_size_dynamic_sections elf_s390_size_dynamic_sections
- #define elf_backend_init_index_section _bfd_elf_init_1_index_section
- #define elf_backend_plt_sym_val elf_s390_plt_sym_val
- #define elf_backend_add_symbol_hook elf_s390_add_symbol_hook
- #define elf_backend_sort_relocs_p elf_s390_elf_sort_relocs_p
- #define bfd_elf64_mkobject elf_s390_mkobject
- #define elf_backend_object_p elf_s390_object_p
- /* Enable ELF64 archive functions. */
- #define bfd_elf64_archive_functions
- extern bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
- extern bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int);
- #define bfd_elf64_archive_slurp_extended_name_table _bfd_archive_coff_slurp_extended_name_table
- #define bfd_elf64_archive_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table
- #define bfd_elf64_archive_truncate_arname _bfd_archive_coff_truncate_arname
- #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
- #define bfd_elf64_archive_write_ar_hdr _bfd_archive_coff_write_ar_hdr
- #define bfd_elf64_archive_openr_next_archived_file _bfd_archive_coff_openr_next_archived_file
- #define bfd_elf64_archive_get_elt_at_index _bfd_archive_coff_get_elt_at_index
- #define bfd_elf64_archive_generic_stat_arch_elt _bfd_archive_coff_generic_stat_arch_elt
- #define bfd_elf64_archive_update_armap_timestamp _bfd_archive_coff_update_armap_timestamp
- #include "elf64-target.h"
|