1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960196119621963196419651966196719681969197019711972197319741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050205120522053205420552056205720582059206020612062206320642065206620672068206920702071207220732074207520762077207820792080208120822083208420852086208720882089209020912092209320942095209620972098209921002101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170217121722173217421752176217721782179218021812182218321842185218621872188218921902191219221932194219521962197219821992200220122022203220422052206220722082209221022112212221322142215221622172218221922202221222222232224222522262227222822292230223122322233223422352236223722382239224022412242224322442245224622472248224922502251225222532254225522562257225822592260226122622263226422652266226722682269227022712272227322742275227622772278227922802281228222832284228522862287228822892290229122922293229422952296229722982299230023012302230323042305230623072308230923102311231223132314231523162317231823192320232123222323232423252326232723282329233023312332233323342335233623372338233923402341234223432344234523462347234823492350235123522353235423552356235723582359236023612362236323642365236623672368236923702371237223732374237523762377237823792380238123822383238423852386238723882389239023912392239323942395239623972398239924002401240224032404240524062407240824092410241124122413241424152416241724182419242024212422242324242425242624272428242924302431243224332434243524362437243824392440244124422443244424452446244724482449245024512452245324542455245624572458245924602461246224632464246524662467246824692470247124722473247424752476247724782479248024812482248324842485248624872488248924902491249224932494249524962497249824992500250125022503250425052506250725082509251025112512251325142515251625172518251925202521252225232524252525262527252825292530253125322533253425352536253725382539254025412542254325442545254625472548254925502551255225532554255525562557255825592560256125622563256425652566256725682569257025712572257325742575257625772578257925802581258225832584258525862587258825892590259125922593259425952596259725982599260026012602260326042605260626072608260926102611261226132614261526162617261826192620262126222623262426252626262726282629263026312632263326342635263626372638263926402641264226432644264526462647264826492650265126522653265426552656265726582659266026612662266326642665266626672668266926702671267226732674267526762677267826792680268126822683268426852686268726882689269026912692269326942695269626972698269927002701270227032704270527062707270827092710271127122713271427152716271727182719272027212722272327242725272627272728272927302731273227332734273527362737273827392740274127422743274427452746274727482749275027512752275327542755275627572758275927602761276227632764276527662767276827692770277127722773277427752776277727782779278027812782278327842785278627872788278927902791279227932794279527962797279827992800280128022803280428052806280728082809281028112812281328142815281628172818281928202821282228232824282528262827282828292830283128322833283428352836283728382839284028412842284328442845284628472848284928502851285228532854285528562857285828592860286128622863286428652866286728682869287028712872287328742875287628772878287928802881288228832884288528862887288828892890289128922893289428952896289728982899290029012902290329042905290629072908290929102911291229132914291529162917291829192920292129222923292429252926292729282929293029312932293329342935293629372938293929402941294229432944294529462947294829492950295129522953295429552956295729582959296029612962296329642965296629672968296929702971297229732974297529762977297829792980298129822983298429852986298729882989299029912992299329942995299629972998299930003001300230033004300530063007300830093010301130123013301430153016301730183019302030213022302330243025302630273028302930303031303230333034303530363037303830393040304130423043304430453046304730483049305030513052305330543055305630573058305930603061306230633064306530663067306830693070307130723073307430753076307730783079308030813082308330843085308630873088308930903091309230933094309530963097309830993100310131023103310431053106310731083109311031113112311331143115311631173118311931203121312231233124312531263127312831293130313131323133313431353136313731383139314031413142314331443145314631473148314931503151315231533154315531563157315831593160316131623163316431653166316731683169317031713172317331743175317631773178317931803181318231833184318531863187318831893190319131923193319431953196319731983199320032013202320332043205320632073208320932103211321232133214321532163217321832193220322132223223322432253226322732283229323032313232323332343235323632373238323932403241324232433244324532463247324832493250325132523253325432553256325732583259326032613262326332643265326632673268326932703271327232733274327532763277327832793280328132823283328432853286328732883289329032913292329332943295329632973298329933003301330233033304330533063307330833093310331133123313331433153316331733183319332033213322332333243325332633273328332933303331333233333334333533363337333833393340334133423343334433453346334733483349335033513352335333543355335633573358335933603361336233633364336533663367336833693370337133723373337433753376337733783379338033813382338333843385338633873388338933903391339233933394339533963397339833993400340134023403340434053406340734083409341034113412341334143415341634173418341934203421342234233424342534263427342834293430343134323433343434353436343734383439344034413442344334443445344634473448344934503451345234533454345534563457345834593460346134623463346434653466346734683469347034713472347334743475347634773478347934803481348234833484348534863487348834893490349134923493349434953496349734983499350035013502350335043505350635073508350935103511351235133514351535163517351835193520352135223523352435253526352735283529353035313532353335343535353635373538353935403541354235433544354535463547354835493550355135523553355435553556355735583559356035613562356335643565356635673568356935703571357235733574357535763577357835793580358135823583358435853586358735883589359035913592359335943595359635973598359936003601360236033604360536063607360836093610361136123613361436153616361736183619362036213622362336243625362636273628362936303631363236333634363536363637363836393640364136423643364436453646364736483649365036513652365336543655365636573658365936603661366236633664366536663667366836693670367136723673367436753676367736783679368036813682368336843685368636873688368936903691369236933694369536963697369836993700370137023703370437053706370737083709371037113712371337143715371637173718371937203721372237233724372537263727372837293730373137323733373437353736373737383739374037413742374337443745374637473748374937503751375237533754375537563757375837593760376137623763376437653766376737683769377037713772377337743775377637773778377937803781378237833784378537863787378837893790379137923793379437953796379737983799380038013802380338043805380638073808380938103811381238133814381538163817381838193820382138223823382438253826382738283829383038313832383338343835383638373838383938403841384238433844384538463847384838493850385138523853385438553856385738583859386038613862386338643865386638673868386938703871387238733874387538763877387838793880388138823883388438853886388738883889389038913892389338943895389638973898389939003901390239033904390539063907390839093910391139123913391439153916391739183919392039213922392339243925392639273928392939303931393239333934393539363937393839393940394139423943394439453946394739483949395039513952395339543955395639573958395939603961396239633964396539663967396839693970397139723973397439753976397739783979398039813982398339843985398639873988398939903991399239933994399539963997399839994000400140024003400440054006400740084009401040114012401340144015401640174018401940204021402240234024402540264027402840294030403140324033403440354036403740384039404040414042404340444045404640474048404940504051405240534054405540564057405840594060406140624063406440654066406740684069407040714072407340744075407640774078407940804081408240834084408540864087408840894090409140924093409440954096409740984099410041014102410341044105410641074108410941104111411241134114411541164117411841194120412141224123412441254126412741284129413041314132413341344135413641374138413941404141414241434144414541464147414841494150415141524153415441554156415741584159416041614162416341644165416641674168416941704171417241734174417541764177417841794180418141824183418441854186418741884189419041914192419341944195419641974198419942004201420242034204420542064207420842094210421142124213421442154216421742184219422042214222422342244225422642274228422942304231423242334234423542364237423842394240424142424243424442454246424742484249425042514252425342544255425642574258425942604261426242634264426542664267426842694270427142724273427442754276427742784279428042814282428342844285428642874288428942904291429242934294429542964297429842994300430143024303430443054306430743084309431043114312431343144315431643174318431943204321432243234324432543264327432843294330433143324333433443354336433743384339434043414342434343444345434643474348434943504351435243534354435543564357435843594360436143624363436443654366436743684369437043714372437343744375437643774378437943804381438243834384438543864387438843894390439143924393439443954396439743984399440044014402440344044405440644074408440944104411441244134414441544164417441844194420442144224423442444254426442744284429443044314432443344344435443644374438443944404441444244434444444544464447444844494450445144524453445444554456445744584459446044614462446344644465446644674468446944704471447244734474447544764477447844794480448144824483448444854486448744884489449044914492449344944495449644974498449945004501450245034504450545064507 |
- /* BFD back-end for HP PA-RISC ELF files.
- Copyright (C) 1990-2022 Free Software Foundation, Inc.
- Original code by
- Center for Software Science
- Department of Computer Science
- University of Utah
- Largely rewritten by Alan Modra <alan@linuxcare.com.au>
- Naming cleanup by Carlos O'Donell <carlos@systemhalted.org>
- TLS support written by Randolph Chung <tausq@debian.org>
- 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 "libbfd.h"
- #include "elf-bfd.h"
- #include "elf/hppa.h"
- #include "libhppa.h"
- #include "elf32-hppa.h"
- #define ARCH_SIZE 32
- #include "elf32-hppa.h"
- #include "elf-hppa.h"
- /* In order to gain some understanding of code in this file without
- knowing all the intricate details of the linker, note the
- following:
- Functions named elf32_hppa_* are called by external routines, other
- functions are only called locally. elf32_hppa_* functions appear
- in this file more or less in the order in which they are called
- from external routines. eg. elf32_hppa_check_relocs is called
- early in the link process, elf32_hppa_finish_dynamic_sections is
- one of the last functions. */
- /* We use two hash tables to hold information for linking PA ELF objects.
- The first is the elf32_hppa_link_hash_table which is derived
- from the standard ELF linker hash table. We use this as a place to
- attach other hash tables and static information.
- The second is the stub hash table which is derived from the
- base BFD hash table. The stub hash table holds the information
- necessary to build the linker stubs during a link.
- There are a number of different stubs generated by the linker.
- Long branch stub:
- : ldil LR'X,%r1
- : be,n RR'X(%sr4,%r1)
- PIC long branch stub:
- : b,l .+8,%r1
- : addil LR'X - ($PIC_pcrel$0 - 4),%r1
- : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
- Import stub to call shared library routine from normal object file
- (single sub-space version)
- : addil LR'lt_ptr+ltoff,%dp ; get PLT address
- : ldo RR'lt_ptr+ltoff(%r1),%r22 ;
- : ldw 0(%r22),%r21 ; get procedure entry point
- : bv %r0(%r21)
- : ldw 4(%r22),%r19 ; get new dlt value.
- Import stub to call shared library routine from shared library
- (single sub-space version)
- : addil LR'ltoff,%r19 ; get PLT address
- : ldo RR'ltoff(%r1),%r22
- : ldw 0(%r22),%r21 ; get procedure entry point
- : bv %r0(%r21)
- : ldw 4(%r22),%r19 ; get new dlt value.
- Import stub to call shared library routine from normal object file
- (multiple sub-space support)
- : addil LR'lt_ptr+ltoff,%dp ; get PLT address
- : ldo RR'lt_ptr+ltoff(%r1),%r22 ;
- : ldw 0(%r22),%r21 ; get procedure entry point
- : ldsid (%r21),%r1 ; get target sid
- : ldw 4(%r22),%r19 ; get new dlt value.
- : mtsp %r1,%sr0
- : be 0(%sr0,%r21) ; branch to target
- : stw %rp,-24(%sp) ; save rp
- Import stub to call shared library routine from shared library
- (multiple sub-space support)
- : addil LR'ltoff,%r19 ; get PLT address
- : ldo RR'ltoff(%r1),%r22
- : ldw 0(%r22),%r21 ; get procedure entry point
- : ldsid (%r21),%r1 ; get target sid
- : ldw 4(%r22),%r19 ; get new dlt value.
- : mtsp %r1,%sr0
- : be 0(%sr0,%r21) ; branch to target
- : stw %rp,-24(%sp) ; save rp
- Export stub to return from shared lib routine (multiple sub-space support)
- One of these is created for each exported procedure in a shared
- library (and stored in the shared lib). Shared lib routines are
- called via the first instruction in the export stub so that we can
- do an inter-space return. Not required for single sub-space.
- : bl,n X,%rp ; trap the return
- : nop
- : ldw -24(%sp),%rp ; restore the original rp
- : ldsid (%rp),%r1
- : mtsp %r1,%sr0
- : be,n 0(%sr0,%rp) ; inter-space return. */
- /* Variable names follow a coding style.
- Please follow this (Apps Hungarian) style:
- Structure/Variable Prefix
- elf_link_hash_table "etab"
- elf_link_hash_entry "eh"
- elf32_hppa_link_hash_table "htab"
- elf32_hppa_link_hash_entry "hh"
- bfd_hash_table "btab"
- bfd_hash_entry "bh"
- bfd_hash_table containing stubs "bstab"
- elf32_hppa_stub_hash_entry "hsh"
- Always remember to use GNU Coding Style. */
- #define PLT_ENTRY_SIZE 8
- #define GOT_ENTRY_SIZE 4
- #define LONG_BRANCH_STUB_SIZE 8
- #define LONG_BRANCH_SHARED_STUB_SIZE 12
- #define IMPORT_STUB_SIZE 20
- #define IMPORT_SHARED_STUB_SIZE 32
- #define EXPORT_STUB_SIZE 24
- #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
- static const bfd_byte plt_stub[] =
- {
- 0x0e, 0x80, 0x10, 0x95, /* 1: ldw 0(%r20),%r21 */
- 0xea, 0xa0, 0xc0, 0x00, /* bv %r0(%r21) */
- 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
- #define PLT_STUB_ENTRY (3*4)
- 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
- 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
- 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
- 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
- };
- /* Section name for stubs is the associated section name plus this
- string. */
- #define STUB_SUFFIX ".stub"
- /* We don't need to copy certain PC- or GP-relative dynamic relocs
- into a shared object's dynamic section. All the relocs of the
- limited class we are interested in, are absolute. */
- #ifndef RELATIVE_DYNRELOCS
- #define RELATIVE_DYNRELOCS 0
- #define IS_ABSOLUTE_RELOC(r_type) 1
- #define pc_dynrelocs(hh) 0
- #endif
- /* 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
- enum elf32_hppa_stub_type
- {
- hppa_stub_long_branch,
- hppa_stub_long_branch_shared,
- hppa_stub_import,
- hppa_stub_import_shared,
- hppa_stub_export,
- hppa_stub_none
- };
- struct elf32_hppa_stub_hash_entry
- {
- /* Base hash table entry structure. */
- struct bfd_hash_entry bh_root;
- /* The stub section. */
- asection *stub_sec;
- /* Offset within stub_sec of the beginning of this stub. */
- bfd_vma stub_offset;
- /* Given the symbol's value and its section we can determine its final
- value when building the stubs (so the stub knows where to jump. */
- bfd_vma target_value;
- asection *target_section;
- enum elf32_hppa_stub_type stub_type;
- /* The symbol table entry, if any, that this was derived from. */
- struct elf32_hppa_link_hash_entry *hh;
- /* Where this stub is being called from, or, in the case of combined
- stub sections, the first input section in the group. */
- asection *id_sec;
- };
- enum _tls_type
- {
- GOT_UNKNOWN = 0,
- GOT_NORMAL = 1,
- GOT_TLS_GD = 2,
- GOT_TLS_LDM = 4,
- GOT_TLS_IE = 8
- };
- struct elf32_hppa_link_hash_entry
- {
- struct elf_link_hash_entry eh;
- /* A pointer to the most recently used stub hash entry against this
- symbol. */
- struct elf32_hppa_stub_hash_entry *hsh_cache;
- ENUM_BITFIELD (_tls_type) tls_type : 8;
- /* Set if this symbol is used by a plabel reloc. */
- unsigned int plabel:1;
- };
- struct elf32_hppa_link_hash_table
- {
- /* The main hash table. */
- struct elf_link_hash_table etab;
- /* The stub hash table. */
- struct bfd_hash_table bstab;
- /* Linker stub bfd. */
- bfd *stub_bfd;
- /* Linker call-backs. */
- asection * (*add_stub_section) (const char *, asection *);
- void (*layout_sections_again) (void);
- /* Array to keep track of which stub sections have been created, and
- information on stub grouping. */
- struct map_stub
- {
- /* This is the section to which stubs in the group will be
- attached. */
- asection *link_sec;
- /* The stub section. */
- asection *stub_sec;
- } *stub_group;
- /* Assorted information used by elf32_hppa_size_stubs. */
- unsigned int bfd_count;
- unsigned int top_index;
- asection **input_list;
- Elf_Internal_Sym **all_local_syms;
- /* Used during a final link to store the base of the text and data
- segments so that we can perform SEGREL relocations. */
- bfd_vma text_segment_base;
- bfd_vma data_segment_base;
- /* Whether we support multiple sub-spaces for shared libs. */
- unsigned int multi_subspace:1;
- /* Flags set when various size branches are detected. Used to
- select suitable defaults for the stub group size. */
- unsigned int has_12bit_branch:1;
- unsigned int has_17bit_branch:1;
- unsigned int has_22bit_branch:1;
- /* Set if we need a .plt stub to support lazy dynamic linking. */
- unsigned int need_plt_stub:1;
- /* Data for LDM relocations. */
- union
- {
- bfd_signed_vma refcount;
- bfd_vma offset;
- } tls_ldm_got;
- };
- /* Various hash macros and functions. */
- #define hppa_link_hash_table(p) \
- ((is_elf_hash_table ((p)->hash) \
- && elf_hash_table_id (elf_hash_table (p)) == HPPA32_ELF_DATA) \
- ? (struct elf32_hppa_link_hash_table *) (p)->hash : NULL)
- #define hppa_elf_hash_entry(ent) \
- ((struct elf32_hppa_link_hash_entry *)(ent))
- #define hppa_stub_hash_entry(ent) \
- ((struct elf32_hppa_stub_hash_entry *)(ent))
- #define hppa_stub_hash_lookup(table, string, create, copy) \
- ((struct elf32_hppa_stub_hash_entry *) \
- bfd_hash_lookup ((table), (string), (create), (copy)))
- #define hppa_elf_local_got_tls_type(abfd) \
- ((char *)(elf_local_got_offsets (abfd) + (elf_tdata (abfd)->symtab_hdr.sh_info * 2)))
- #define hh_name(hh) \
- (hh ? hh->eh.root.root.string : "<undef>")
- #define eh_name(eh) \
- (eh ? eh->root.root.string : "<undef>")
- /* Assorted hash table functions. */
- /* Initialize an entry in the stub hash table. */
- static struct bfd_hash_entry *
- stub_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 elf32_hppa_stub_hash_entry));
- if (entry == NULL)
- return entry;
- }
- /* Call the allocation method of the superclass. */
- entry = bfd_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct elf32_hppa_stub_hash_entry *hsh;
- /* Initialize the local fields. */
- hsh = hppa_stub_hash_entry (entry);
- hsh->stub_sec = NULL;
- hsh->stub_offset = 0;
- hsh->target_value = 0;
- hsh->target_section = NULL;
- hsh->stub_type = hppa_stub_long_branch;
- hsh->hh = NULL;
- hsh->id_sec = NULL;
- }
- return entry;
- }
- /* Initialize an entry in the link hash table. */
- static struct bfd_hash_entry *
- hppa_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 elf32_hppa_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 elf32_hppa_link_hash_entry *hh;
- /* Initialize the local fields. */
- hh = hppa_elf_hash_entry (entry);
- hh->hsh_cache = NULL;
- hh->plabel = 0;
- hh->tls_type = GOT_UNKNOWN;
- }
- return entry;
- }
- /* Free the derived linker hash table. */
- static void
- elf32_hppa_link_hash_table_free (bfd *obfd)
- {
- struct elf32_hppa_link_hash_table *htab
- = (struct elf32_hppa_link_hash_table *) obfd->link.hash;
- bfd_hash_table_free (&htab->bstab);
- _bfd_elf_link_hash_table_free (obfd);
- }
- /* Create the derived linker hash table. The PA ELF port uses the derived
- hash table to keep information specific to the PA ELF linker (without
- using static variables). */
- static struct bfd_link_hash_table *
- elf32_hppa_link_hash_table_create (bfd *abfd)
- {
- struct elf32_hppa_link_hash_table *htab;
- size_t amt = sizeof (*htab);
- htab = bfd_zmalloc (amt);
- if (htab == NULL)
- return NULL;
- if (!_bfd_elf_link_hash_table_init (&htab->etab, abfd, hppa_link_hash_newfunc,
- sizeof (struct elf32_hppa_link_hash_entry),
- HPPA32_ELF_DATA))
- {
- free (htab);
- return NULL;
- }
- /* Init the stub hash table too. */
- if (!bfd_hash_table_init (&htab->bstab, stub_hash_newfunc,
- sizeof (struct elf32_hppa_stub_hash_entry)))
- {
- _bfd_elf_link_hash_table_free (abfd);
- return NULL;
- }
- htab->etab.root.hash_table_free = elf32_hppa_link_hash_table_free;
- htab->etab.dt_pltgot_required = true;
- htab->text_segment_base = (bfd_vma) -1;
- htab->data_segment_base = (bfd_vma) -1;
- return &htab->etab.root;
- }
- /* Initialize the linker stubs BFD so that we can use it for linker
- created dynamic sections. */
- void
- elf32_hppa_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
- {
- struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
- elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS32;
- htab->etab.dynobj = abfd;
- }
- /* Build a name for an entry in the stub hash table. */
- static char *
- hppa_stub_name (const asection *input_section,
- const asection *sym_sec,
- const struct elf32_hppa_link_hash_entry *hh,
- const Elf_Internal_Rela *rela)
- {
- char *stub_name;
- bfd_size_type len;
- if (hh)
- {
- len = 8 + 1 + strlen (hh_name (hh)) + 1 + 8 + 1;
- stub_name = bfd_malloc (len);
- if (stub_name != NULL)
- sprintf (stub_name, "%08x_%s+%x",
- input_section->id & 0xffffffff,
- hh_name (hh),
- (int) rela->r_addend & 0xffffffff);
- }
- else
- {
- len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
- stub_name = bfd_malloc (len);
- if (stub_name != NULL)
- sprintf (stub_name, "%08x_%x:%x+%x",
- input_section->id & 0xffffffff,
- sym_sec->id & 0xffffffff,
- (int) ELF32_R_SYM (rela->r_info) & 0xffffffff,
- (int) rela->r_addend & 0xffffffff);
- }
- return stub_name;
- }
- /* Look up an entry in the stub hash. Stub entries are cached because
- creating the stub name takes a bit of time. */
- static struct elf32_hppa_stub_hash_entry *
- hppa_get_stub_entry (const asection *input_section,
- const asection *sym_sec,
- struct elf32_hppa_link_hash_entry *hh,
- const Elf_Internal_Rela *rela,
- struct elf32_hppa_link_hash_table *htab)
- {
- struct elf32_hppa_stub_hash_entry *hsh_entry;
- const asection *id_sec;
- /* If this input section is part of a group of sections sharing one
- stub section, then use the id of the first section in the group.
- Stub names need to include a section id, as there may well be
- more than one stub used to reach say, printf, and we need to
- distinguish between them. */
- id_sec = htab->stub_group[input_section->id].link_sec;
- if (id_sec == NULL)
- return NULL;
- if (hh != NULL && hh->hsh_cache != NULL
- && hh->hsh_cache->hh == hh
- && hh->hsh_cache->id_sec == id_sec)
- {
- hsh_entry = hh->hsh_cache;
- }
- else
- {
- char *stub_name;
- stub_name = hppa_stub_name (id_sec, sym_sec, hh, rela);
- if (stub_name == NULL)
- return NULL;
- hsh_entry = hppa_stub_hash_lookup (&htab->bstab,
- stub_name, false, false);
- if (hh != NULL)
- hh->hsh_cache = hsh_entry;
- free (stub_name);
- }
- return hsh_entry;
- }
- /* Add a new stub entry to the stub hash. Not all fields of the new
- stub entry are initialised. */
- static struct elf32_hppa_stub_hash_entry *
- hppa_add_stub (const char *stub_name,
- asection *section,
- struct elf32_hppa_link_hash_table *htab)
- {
- asection *link_sec;
- asection *stub_sec;
- struct elf32_hppa_stub_hash_entry *hsh;
- link_sec = htab->stub_group[section->id].link_sec;
- stub_sec = htab->stub_group[section->id].stub_sec;
- if (stub_sec == NULL)
- {
- stub_sec = htab->stub_group[link_sec->id].stub_sec;
- if (stub_sec == NULL)
- {
- size_t namelen;
- bfd_size_type len;
- char *s_name;
- namelen = strlen (link_sec->name);
- len = namelen + sizeof (STUB_SUFFIX);
- s_name = bfd_alloc (htab->stub_bfd, len);
- if (s_name == NULL)
- return NULL;
- memcpy (s_name, link_sec->name, namelen);
- memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
- stub_sec = (*htab->add_stub_section) (s_name, link_sec);
- if (stub_sec == NULL)
- return NULL;
- htab->stub_group[link_sec->id].stub_sec = stub_sec;
- }
- htab->stub_group[section->id].stub_sec = stub_sec;
- }
- /* Enter this entry into the linker stub hash table. */
- hsh = hppa_stub_hash_lookup (&htab->bstab, stub_name,
- true, false);
- if (hsh == NULL)
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: cannot create stub entry %s"),
- section->owner, stub_name);
- return NULL;
- }
- hsh->stub_sec = stub_sec;
- hsh->stub_offset = 0;
- hsh->id_sec = link_sec;
- return hsh;
- }
- /* Determine the type of stub needed, if any, for a call. */
- static enum elf32_hppa_stub_type
- hppa_type_of_stub (asection *input_sec,
- const Elf_Internal_Rela *rela,
- struct elf32_hppa_link_hash_entry *hh,
- bfd_vma destination,
- struct bfd_link_info *info)
- {
- bfd_vma location;
- bfd_vma branch_offset;
- bfd_vma max_branch_offset;
- unsigned int r_type;
- if (hh != NULL
- && hh->eh.plt.offset != (bfd_vma) -1
- && hh->eh.dynindx != -1
- && !hh->plabel
- && (bfd_link_pic (info)
- || !hh->eh.def_regular
- || hh->eh.root.type == bfd_link_hash_defweak))
- {
- /* We need an import stub. Decide between hppa_stub_import
- and hppa_stub_import_shared later. */
- return hppa_stub_import;
- }
- if (destination == (bfd_vma) -1)
- return hppa_stub_none;
- /* Determine where the call point is. */
- location = (input_sec->output_offset
- + input_sec->output_section->vma
- + rela->r_offset);
- branch_offset = destination - location - 8;
- r_type = ELF32_R_TYPE (rela->r_info);
- /* Determine if a long branch stub is needed. parisc branch offsets
- are relative to the second instruction past the branch, ie. +8
- bytes on from the branch instruction location. The offset is
- signed and counts in units of 4 bytes. */
- if (r_type == (unsigned int) R_PARISC_PCREL17F)
- max_branch_offset = (1 << (17 - 1)) << 2;
- else if (r_type == (unsigned int) R_PARISC_PCREL12F)
- max_branch_offset = (1 << (12 - 1)) << 2;
- else /* R_PARISC_PCREL22F. */
- max_branch_offset = (1 << (22 - 1)) << 2;
- if (branch_offset + max_branch_offset >= 2*max_branch_offset)
- return hppa_stub_long_branch;
- return hppa_stub_none;
- }
- /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
- IN_ARG contains the link info pointer. */
- #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
- #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
- #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
- #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
- #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
- #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
- #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
- #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
- #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
- #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
- #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
- #define LDO_R1_R22 0x34360000 /* ldo RR'XXX(%r1),%r22 */
- #define LDW_R22_R21 0x0ec01095 /* ldw 0(%r22),%r21 */
- #define LDW_R22_R19 0x0ec81093 /* ldw 4(%r22),%r19 */
- #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
- #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
- #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
- #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
- #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
- #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
- #define NOP 0x08000240 /* nop */
- #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
- #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
- #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
- #ifndef R19_STUBS
- #define R19_STUBS 1
- #endif
- #if R19_STUBS
- #define LDW_R1_DLT LDW_R1_R19
- #else
- #define LDW_R1_DLT LDW_R1_DP
- #endif
- static bool
- hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg)
- {
- struct elf32_hppa_stub_hash_entry *hsh;
- struct bfd_link_info *info;
- struct elf32_hppa_link_hash_table *htab;
- asection *stub_sec;
- bfd *stub_bfd;
- bfd_byte *loc;
- bfd_vma sym_value;
- bfd_vma insn;
- bfd_vma off;
- int val;
- int size;
- /* Massage our args to the form they really have. */
- hsh = hppa_stub_hash_entry (bh);
- info = (struct bfd_link_info *)in_arg;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- stub_sec = hsh->stub_sec;
- /* Make a note of the offset within the stubs for this entry. */
- hsh->stub_offset = stub_sec->size;
- loc = stub_sec->contents + hsh->stub_offset;
- stub_bfd = stub_sec->owner;
- switch (hsh->stub_type)
- {
- case hppa_stub_long_branch:
- /* Fail if the target section could not be assigned to an output
- section. The user should fix his linker script. */
- if (hsh->target_section->output_section == NULL
- && info->non_contiguous_regions)
- info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output "
- "section. Retry without "
- "--enable-non-contiguous-regions.\n"),
- hsh->target_section);
- /* Create the long branch. A long branch is formed with "ldil"
- loading the upper bits of the target address into a register,
- then branching with "be" which adds in the lower bits.
- The "be" has its delay slot nullified. */
- sym_value = (hsh->target_value
- + hsh->target_section->output_offset
- + hsh->target_section->output_section->vma);
- val = hppa_field_adjust (sym_value, 0, e_lrsel);
- insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
- bfd_put_32 (stub_bfd, insn, loc);
- val = hppa_field_adjust (sym_value, 0, e_rrsel) >> 2;
- insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
- bfd_put_32 (stub_bfd, insn, loc + 4);
- size = LONG_BRANCH_STUB_SIZE;
- break;
- case hppa_stub_long_branch_shared:
- /* Fail if the target section could not be assigned to an output
- section. The user should fix his linker script. */
- if (hsh->target_section->output_section == NULL
- && info->non_contiguous_regions)
- info->callbacks->einfo (_("%F%P: Could not assign %pA to an output "
- "section. Retry without "
- "--enable-non-contiguous-regions.\n"),
- hsh->target_section);
- /* Branches are relative. This is where we are going to. */
- sym_value = (hsh->target_value
- + hsh->target_section->output_offset
- + hsh->target_section->output_section->vma);
- /* And this is where we are coming from, more or less. */
- sym_value -= (hsh->stub_offset
- + stub_sec->output_offset
- + stub_sec->output_section->vma);
- bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
- val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
- insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
- bfd_put_32 (stub_bfd, insn, loc + 4);
- val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
- insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
- bfd_put_32 (stub_bfd, insn, loc + 8);
- size = LONG_BRANCH_SHARED_STUB_SIZE;
- break;
- case hppa_stub_import:
- case hppa_stub_import_shared:
- off = hsh->hh->eh.plt.offset;
- if (off >= (bfd_vma) -2)
- abort ();
- off &= ~ (bfd_vma) 1;
- sym_value = (off
- + htab->etab.splt->output_offset
- + htab->etab.splt->output_section->vma
- - elf_gp (htab->etab.splt->output_section->owner));
- insn = ADDIL_DP;
- #if R19_STUBS
- if (hsh->stub_type == hppa_stub_import_shared)
- insn = ADDIL_R19;
- #endif
- /* Load function descriptor address into register %r22. It is
- sometimes needed for lazy binding. */
- val = hppa_field_adjust (sym_value, 0, e_lrsel),
- insn = hppa_rebuild_insn ((int) insn, val, 21);
- bfd_put_32 (stub_bfd, insn, loc);
- val = hppa_field_adjust (sym_value, 0, e_rrsel);
- insn = hppa_rebuild_insn ((int) LDO_R1_R22, val, 14);
- bfd_put_32 (stub_bfd, insn, loc + 4);
- bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R21, loc + 8);
- if (htab->multi_subspace)
- {
- bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
- bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19, loc + 16);
- bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 20);
- bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 24);
- bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 28);
- size = IMPORT_SHARED_STUB_SIZE;
- }
- else
- {
- bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 12);
- bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19, loc + 16);
- size = IMPORT_STUB_SIZE;
- }
- break;
- case hppa_stub_export:
- /* Fail if the target section could not be assigned to an output
- section. The user should fix his linker script. */
- if (hsh->target_section->output_section == NULL
- && info->non_contiguous_regions)
- info->callbacks->einfo (_("%F%P: Could not assign %pA to an output "
- "section. Retry without "
- "--enable-non-contiguous-regions.\n"),
- hsh->target_section);
- /* Branches are relative. This is where we are going to. */
- sym_value = (hsh->target_value
- + hsh->target_section->output_offset
- + hsh->target_section->output_section->vma);
- /* And this is where we are coming from. */
- sym_value -= (hsh->stub_offset
- + stub_sec->output_offset
- + stub_sec->output_section->vma);
- if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
- && (!htab->has_22bit_branch
- || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB(%pA+%#" PRIx64 "): "
- "cannot reach %s, recompile with -ffunction-sections"),
- hsh->target_section->owner,
- stub_sec,
- (uint64_t) hsh->stub_offset,
- hsh->bh_root.string);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
- if (!htab->has_22bit_branch)
- insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
- else
- insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
- bfd_put_32 (stub_bfd, insn, loc);
- bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
- bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
- bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
- bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
- bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
- /* Point the function symbol at the stub. */
- hsh->hh->eh.root.u.def.section = stub_sec;
- hsh->hh->eh.root.u.def.value = stub_sec->size;
- size = EXPORT_STUB_SIZE;
- break;
- default:
- BFD_FAIL ();
- return false;
- }
- stub_sec->size += size;
- return true;
- }
- #undef LDIL_R1
- #undef BE_SR4_R1
- #undef BL_R1
- #undef ADDIL_R1
- #undef DEPI_R1
- #undef LDW_R1_R21
- #undef LDW_R1_DLT
- #undef LDW_R1_R19
- #undef ADDIL_R19
- #undef LDW_R1_DP
- #undef LDSID_R21_R1
- #undef MTSP_R1
- #undef BE_SR0_R21
- #undef STW_RP
- #undef BV_R0_R21
- #undef BL_RP
- #undef NOP
- #undef LDW_RP
- #undef LDSID_RP_R1
- #undef BE_SR0_RP
- /* As above, but don't actually build the stub. Just bump offset so
- we know stub section sizes. */
- static bool
- hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg)
- {
- struct elf32_hppa_stub_hash_entry *hsh;
- struct elf32_hppa_link_hash_table *htab;
- int size;
- /* Massage our args to the form they really have. */
- hsh = hppa_stub_hash_entry (bh);
- htab = in_arg;
- if (hsh->stub_type == hppa_stub_long_branch)
- size = LONG_BRANCH_STUB_SIZE;
- else if (hsh->stub_type == hppa_stub_long_branch_shared)
- size = LONG_BRANCH_SHARED_STUB_SIZE;
- else if (hsh->stub_type == hppa_stub_export)
- size = EXPORT_STUB_SIZE;
- else /* hppa_stub_import or hppa_stub_import_shared. */
- {
- if (htab->multi_subspace)
- size = IMPORT_SHARED_STUB_SIZE;
- else
- size = IMPORT_STUB_SIZE;
- }
- hsh->stub_sec->size += size;
- return true;
- }
- /* Return nonzero if ABFD represents an HPPA ELF32 file.
- Additionally we set the default architecture and machine. */
- static bool
- elf32_hppa_object_p (bfd *abfd)
- {
- Elf_Internal_Ehdr * i_ehdrp;
- unsigned int flags;
- i_ehdrp = elf_elfheader (abfd);
- if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
- {
- /* GCC on hppa-linux produces binaries with OSABI=GNU,
- but the kernel produces corefiles with OSABI=SysV. */
- if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU &&
- i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
- return false;
- }
- else if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0)
- {
- /* GCC on hppa-netbsd produces binaries with OSABI=NetBSD,
- but the kernel produces corefiles with OSABI=SysV. */
- if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NETBSD &&
- i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_NONE) /* aka SYSV */
- return false;
- }
- else
- {
- if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
- return false;
- }
- flags = i_ehdrp->e_flags;
- switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
- {
- case EFA_PARISC_1_0:
- return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
- case EFA_PARISC_1_1:
- return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
- case EFA_PARISC_2_0:
- return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
- case EFA_PARISC_2_0 | EF_PARISC_WIDE:
- return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
- }
- return true;
- }
- /* Create the .plt and .got sections, and set up our hash table
- short-cuts to various dynamic sections. */
- static bool
- elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
- {
- struct elf32_hppa_link_hash_table *htab;
- struct elf_link_hash_entry *eh;
- /* Don't try to create the .plt and .got twice. */
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- if (htab->etab.splt != NULL)
- return true;
- /* Call the generic code to do most of the work. */
- if (! _bfd_elf_create_dynamic_sections (abfd, info))
- return false;
- /* hppa-linux needs _GLOBAL_OFFSET_TABLE_ to be visible from the main
- application, because __canonicalize_funcptr_for_compare needs it. */
- eh = elf_hash_table (info)->hgot;
- eh->forced_local = 0;
- eh->other = STV_DEFAULT;
- return bfd_elf_link_record_dynamic_symbol (info, eh);
- }
- /* Copy the extra info we tack onto an elf_link_hash_entry. */
- static void
- elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *eh_dir,
- struct elf_link_hash_entry *eh_ind)
- {
- struct elf32_hppa_link_hash_entry *hh_dir, *hh_ind;
- hh_dir = hppa_elf_hash_entry (eh_dir);
- hh_ind = hppa_elf_hash_entry (eh_ind);
- if (eh_ind->root.type == bfd_link_hash_indirect)
- {
- hh_dir->plabel |= hh_ind->plabel;
- hh_dir->tls_type |= hh_ind->tls_type;
- hh_ind->tls_type = GOT_UNKNOWN;
- }
- _bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
- }
- static int
- elf32_hppa_optimized_tls_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED,
- int r_type, int is_local ATTRIBUTE_UNUSED)
- {
- /* For now we don't support linker optimizations. */
- return r_type;
- }
- /* Return a pointer to the local GOT, PLT and TLS reference counts
- for ABFD. Returns NULL if the storage allocation fails. */
- static bfd_signed_vma *
- hppa32_elf_local_refcounts (bfd *abfd)
- {
- Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- bfd_signed_vma *local_refcounts;
- local_refcounts = elf_local_got_refcounts (abfd);
- if (local_refcounts == NULL)
- {
- bfd_size_type size;
- /* Allocate space for local GOT and PLT reference
- counts. Done this way to save polluting elf_obj_tdata
- with another target specific pointer. */
- size = symtab_hdr->sh_info;
- size *= 2 * sizeof (bfd_signed_vma);
- /* Add in space to store the local GOT TLS types. */
- size += symtab_hdr->sh_info;
- local_refcounts = bfd_zalloc (abfd, size);
- if (local_refcounts == NULL)
- return NULL;
- elf_local_got_refcounts (abfd) = local_refcounts;
- memset (hppa_elf_local_got_tls_type (abfd), GOT_UNKNOWN,
- symtab_hdr->sh_info);
- }
- return local_refcounts;
- }
- /* Look through the relocs for a section during the first phase, and
- calculate needed space in the global offset table, procedure linkage
- table, and dynamic reloc sections. At this point we haven't
- necessarily read all the input files. */
- static bool
- elf32_hppa_check_relocs (bfd *abfd,
- struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
- {
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **eh_syms;
- const Elf_Internal_Rela *rela;
- const Elf_Internal_Rela *rela_end;
- struct elf32_hppa_link_hash_table *htab;
- asection *sreloc;
- if (bfd_link_relocatable (info))
- return true;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- eh_syms = elf_sym_hashes (abfd);
- sreloc = NULL;
- rela_end = relocs + sec->reloc_count;
- for (rela = relocs; rela < rela_end; rela++)
- {
- enum {
- NEED_GOT = 1,
- NEED_PLT = 2,
- NEED_DYNREL = 4,
- PLT_PLABEL = 8
- };
- unsigned int r_symndx, r_type;
- struct elf32_hppa_link_hash_entry *hh;
- int need_entry = 0;
- r_symndx = ELF32_R_SYM (rela->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- hh = NULL;
- else
- {
- hh = hppa_elf_hash_entry (eh_syms[r_symndx - symtab_hdr->sh_info]);
- while (hh->eh.root.type == bfd_link_hash_indirect
- || hh->eh.root.type == bfd_link_hash_warning)
- hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
- }
- r_type = ELF32_R_TYPE (rela->r_info);
- r_type = elf32_hppa_optimized_tls_reloc (info, r_type, hh == NULL);
- switch (r_type)
- {
- case R_PARISC_DLTIND14F:
- case R_PARISC_DLTIND14R:
- case R_PARISC_DLTIND21L:
- /* This symbol requires a global offset table entry. */
- need_entry = NEED_GOT;
- break;
- case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
- case R_PARISC_PLABEL21L:
- case R_PARISC_PLABEL32:
- /* If the addend is non-zero, we break badly. */
- if (rela->r_addend != 0)
- abort ();
- /* If we are creating a shared library, then we need to
- create a PLT entry for all PLABELs, because PLABELs with
- local symbols may be passed via a pointer to another
- object. Additionally, output a dynamic relocation
- pointing to the PLT entry.
- For executables, the original 32-bit ABI allowed two
- different styles of PLABELs (function pointers): For
- global functions, the PLABEL word points into the .plt
- two bytes past a (function address, gp) pair, and for
- local functions the PLABEL points directly at the
- function. The magic +2 for the first type allows us to
- differentiate between the two. As you can imagine, this
- is a real pain when it comes to generating code to call
- functions indirectly or to compare function pointers.
- We avoid the mess by always pointing a PLABEL into the
- .plt, even for local functions. */
- need_entry = PLT_PLABEL | NEED_PLT;
- if (bfd_link_pic (info))
- need_entry |= NEED_DYNREL;
- break;
- case R_PARISC_PCREL12F:
- htab->has_12bit_branch = 1;
- goto branch_common;
- case R_PARISC_PCREL17C:
- case R_PARISC_PCREL17F:
- htab->has_17bit_branch = 1;
- goto branch_common;
- case R_PARISC_PCREL22F:
- htab->has_22bit_branch = 1;
- branch_common:
- /* Function calls might need to go through the .plt, and
- might require long branch stubs. */
- if (hh == NULL)
- {
- /* We know local syms won't need a .plt entry, and if
- they need a long branch stub we can't guarantee that
- we can reach the stub. So just flag an error later
- if we're doing a shared link and find we need a long
- branch stub. */
- continue;
- }
- else
- {
- /* Global symbols will need a .plt entry if they remain
- global, and in most cases won't need a long branch
- stub. Unfortunately, we have to cater for the case
- where a symbol is forced local by versioning, or due
- to symbolic linking, and we lose the .plt entry. */
- need_entry = NEED_PLT;
- if (hh->eh.type == STT_PARISC_MILLI)
- need_entry = 0;
- }
- break;
- case R_PARISC_SEGBASE: /* Used to set segment base. */
- case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
- case R_PARISC_PCREL14F: /* PC relative load/store. */
- case R_PARISC_PCREL14R:
- case R_PARISC_PCREL17R: /* External branches. */
- case R_PARISC_PCREL21L: /* As above, and for load/store too. */
- case R_PARISC_PCREL32:
- /* We don't need to propagate the relocation if linking a
- shared object since these are section relative. */
- continue;
- case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
- case R_PARISC_DPREL14R:
- case R_PARISC_DPREL21L:
- if (bfd_link_pic (info))
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB: relocation %s can not be used when making a shared object; recompile with -fPIC"),
- abfd,
- elf_hppa_howto_table[r_type].name);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- /* Fall through. */
- case R_PARISC_DIR17F: /* Used for external branches. */
- case R_PARISC_DIR17R:
- case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
- case R_PARISC_DIR14R:
- case R_PARISC_DIR21L: /* As above, and for ext branches too. */
- case R_PARISC_DIR32: /* .word relocs. */
- /* We may want to output a dynamic relocation later. */
- need_entry = NEED_DYNREL;
- break;
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- case R_PARISC_GNU_VTINHERIT:
- if (!bfd_elf_gc_record_vtinherit (abfd, sec, &hh->eh, rela->r_offset))
- return false;
- continue;
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- case R_PARISC_GNU_VTENTRY:
- if (!bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend))
- return false;
- continue;
- case R_PARISC_TLS_GD21L:
- case R_PARISC_TLS_GD14R:
- case R_PARISC_TLS_LDM21L:
- case R_PARISC_TLS_LDM14R:
- need_entry = NEED_GOT;
- break;
- case R_PARISC_TLS_IE21L:
- case R_PARISC_TLS_IE14R:
- if (bfd_link_dll (info))
- info->flags |= DF_STATIC_TLS;
- need_entry = NEED_GOT;
- break;
- default:
- continue;
- }
- /* Now carry out our orders. */
- if (need_entry & NEED_GOT)
- {
- int tls_type = GOT_NORMAL;
- switch (r_type)
- {
- default:
- break;
- case R_PARISC_TLS_GD21L:
- case R_PARISC_TLS_GD14R:
- tls_type = GOT_TLS_GD;
- break;
- case R_PARISC_TLS_LDM21L:
- case R_PARISC_TLS_LDM14R:
- tls_type = GOT_TLS_LDM;
- break;
- case R_PARISC_TLS_IE21L:
- case R_PARISC_TLS_IE14R:
- tls_type = GOT_TLS_IE;
- break;
- }
- /* Allocate space for a GOT entry, as well as a dynamic
- relocation for this entry. */
- if (htab->etab.sgot == NULL)
- {
- if (!elf32_hppa_create_dynamic_sections (htab->etab.dynobj, info))
- return false;
- }
- if (hh != NULL)
- {
- if (tls_type == GOT_TLS_LDM)
- htab->tls_ldm_got.refcount += 1;
- else
- hh->eh.got.refcount += 1;
- hh->tls_type |= tls_type;
- }
- else
- {
- bfd_signed_vma *local_got_refcounts;
- /* This is a global offset table entry for a local symbol. */
- local_got_refcounts = hppa32_elf_local_refcounts (abfd);
- if (local_got_refcounts == NULL)
- return false;
- if (tls_type == GOT_TLS_LDM)
- htab->tls_ldm_got.refcount += 1;
- else
- local_got_refcounts[r_symndx] += 1;
- hppa_elf_local_got_tls_type (abfd) [r_symndx] |= tls_type;
- }
- }
- if (need_entry & NEED_PLT)
- {
- /* If we are creating a shared library, and this is a reloc
- against a weak symbol or a global symbol in a dynamic
- object, then we will be creating an import stub and a
- .plt entry for the symbol. Similarly, on a normal link
- to symbols defined in a dynamic object we'll need the
- import stub and a .plt entry. We don't know yet whether
- the symbol is defined or not, so make an entry anyway and
- clean up later in adjust_dynamic_symbol. */
- if ((sec->flags & SEC_ALLOC) != 0)
- {
- if (hh != NULL)
- {
- hh->eh.needs_plt = 1;
- hh->eh.plt.refcount += 1;
- /* If this .plt entry is for a plabel, mark it so
- that adjust_dynamic_symbol will keep the entry
- even if it appears to be local. */
- if (need_entry & PLT_PLABEL)
- hh->plabel = 1;
- }
- else if (need_entry & PLT_PLABEL)
- {
- bfd_signed_vma *local_got_refcounts;
- bfd_signed_vma *local_plt_refcounts;
- local_got_refcounts = hppa32_elf_local_refcounts (abfd);
- if (local_got_refcounts == NULL)
- return false;
- local_plt_refcounts = (local_got_refcounts
- + symtab_hdr->sh_info);
- local_plt_refcounts[r_symndx] += 1;
- }
- }
- }
- if ((need_entry & NEED_DYNREL) != 0
- && (sec->flags & SEC_ALLOC) != 0)
- {
- /* Flag this symbol as having a non-got, non-plt reference
- so that we generate copy relocs if it turns out to be
- dynamic. */
- if (hh != NULL)
- hh->eh.non_got_ref = 1;
- /* If we are creating a shared library then we need to copy
- the reloc into the shared library. However, if we are
- linking with -Bsymbolic, we need only copy absolute
- relocs or relocs against symbols that are not defined in
- an object we are including in the link. PC- or DP- or
- DLT-relative relocs against any local sym or global sym
- with DEF_REGULAR set, can be discarded. 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). We account for that possibility below by
- storing information in the dyn_relocs field of the
- hash table entry.
- A similar situation to the -Bsymbolic case occurs when
- creating shared libraries and symbol visibility changes
- render the symbol local.
- As it turns out, all the relocs we will be creating here
- are absolute, so we cannot remove them on -Bsymbolic
- links or visibility changes anyway. A STUB_REL reloc
- is absolute too, as in that case it is the reloc in the
- stub we will be creating, rather than copying the PCREL
- reloc in the branch.
- 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)
- && (IS_ABSOLUTE_RELOC (r_type)
- || (hh != NULL
- && (!SYMBOLIC_BIND (info, &hh->eh)
- || hh->eh.root.type == bfd_link_hash_defweak
- || !hh->eh.def_regular))))
- || (ELIMINATE_COPY_RELOCS
- && !bfd_link_pic (info)
- && hh != NULL
- && (hh->eh.root.type == bfd_link_hash_defweak
- || !hh->eh.def_regular)))
- {
- struct elf_dyn_relocs *hdh_p;
- struct elf_dyn_relocs **hdh_head;
- /* Create a reloc section in dynobj and make room for
- this reloc. */
- if (sreloc == NULL)
- {
- sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, htab->etab.dynobj, 2, abfd, /*rela?*/ true);
- if (sreloc == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- }
- /* If this is a global symbol, we count the number of
- relocations we need for this symbol. */
- if (hh != NULL)
- {
- hdh_head = &hh->eh.dyn_relocs;
- }
- else
- {
- /* Track dynamic relocs needed for local syms too.
- We really need local syms available to do this
- easily. Oh well. */
- asection *sr;
- void *vpp;
- Elf_Internal_Sym *isym;
- isym = bfd_sym_from_r_symndx (&htab->etab.sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return false;
- sr = bfd_section_from_elf_index (abfd, isym->st_shndx);
- if (sr == NULL)
- sr = sec;
- vpp = &elf_section_data (sr)->local_dynrel;
- hdh_head = (struct elf_dyn_relocs **) vpp;
- }
- hdh_p = *hdh_head;
- if (hdh_p == NULL || hdh_p->sec != sec)
- {
- hdh_p = bfd_alloc (htab->etab.dynobj, sizeof *hdh_p);
- if (hdh_p == NULL)
- return false;
- hdh_p->next = *hdh_head;
- *hdh_head = hdh_p;
- hdh_p->sec = sec;
- hdh_p->count = 0;
- #if RELATIVE_DYNRELOCS
- hdh_p->pc_count = 0;
- #endif
- }
- hdh_p->count += 1;
- #if RELATIVE_DYNRELOCS
- if (!IS_ABSOLUTE_RELOC (rtype))
- hdh_p->pc_count += 1;
- #endif
- }
- }
- }
- return true;
- }
- /* Return the section that should be marked against garbage collection
- for a given relocation. */
- static asection *
- elf32_hppa_gc_mark_hook (asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Rela *rela,
- struct elf_link_hash_entry *hh,
- Elf_Internal_Sym *sym)
- {
- if (hh != NULL)
- switch ((unsigned int) ELF32_R_TYPE (rela->r_info))
- {
- case R_PARISC_GNU_VTINHERIT:
- case R_PARISC_GNU_VTENTRY:
- return NULL;
- }
- return _bfd_elf_gc_mark_hook (sec, info, rela, hh, sym);
- }
- /* Support for core dump NOTE sections. */
- static bool
- elf32_hppa_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
- {
- int offset;
- size_t size;
- switch (note->descsz)
- {
- default:
- return false;
- case 396: /* Linux/hppa */
- /* pr_cursig */
- elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
- /* pr_pid */
- elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
- /* pr_reg */
- offset = 72;
- size = 320;
- break;
- }
- /* Make a ".reg/999" section. */
- return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- size, note->descpos + offset);
- }
- static bool
- elf32_hppa_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
- {
- switch (note->descsz)
- {
- default:
- return false;
- case 124: /* Linux/hppa elf_prpsinfo. */
- elf_tdata (abfd)->core->program
- = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
- elf_tdata (abfd)->core->command
- = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
- }
- /* Note that for some reason, a spurious space is tacked
- onto the end of the args in some (at least one anyway)
- implementations, so strip it off if it exists. */
- {
- char *command = elf_tdata (abfd)->core->command;
- int n = strlen (command);
- if (0 < n && command[n - 1] == ' ')
- command[n - 1] = '\0';
- }
- return true;
- }
- /* Our own version of hide_symbol, so that we can keep plt entries for
- plabels. */
- static void
- elf32_hppa_hide_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *eh,
- bool force_local)
- {
- if (force_local)
- {
- eh->forced_local = 1;
- if (eh->dynindx != -1)
- {
- eh->dynindx = -1;
- _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
- eh->dynstr_index);
- }
- /* PR 16082: Remove version information from hidden symbol. */
- eh->verinfo.verdef = NULL;
- eh->verinfo.vertree = NULL;
- }
- /* STT_GNU_IFUNC symbol must go through PLT. */
- if (! hppa_elf_hash_entry (eh)->plabel
- && eh->type != STT_GNU_IFUNC)
- {
- eh->needs_plt = 0;
- eh->plt = elf_hash_table (info)->init_plt_offset;
- }
- }
- /* Return true if we have dynamic relocs against H or any of its weak
- aliases, that apply to read-only sections. Cannot be used after
- size_dynamic_sections. */
- static bool
- alias_readonly_dynrelocs (struct elf_link_hash_entry *eh)
- {
- struct elf32_hppa_link_hash_entry *hh = hppa_elf_hash_entry (eh);
- do
- {
- if (_bfd_elf_readonly_dynrelocs (&hh->eh))
- return true;
- hh = hppa_elf_hash_entry (hh->eh.u.alias);
- } while (hh != NULL && &hh->eh != eh);
- return false;
- }
- /* 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 bool
- elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *eh)
- {
- struct elf32_hppa_link_hash_table *htab;
- asection *sec, *srel;
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later. */
- if (eh->type == STT_FUNC
- || eh->needs_plt)
- {
- bool local = (SYMBOL_CALLS_LOCAL (info, eh)
- || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh));
- /* Discard dyn_relocs when non-pic if we've decided that a
- function symbol is local. */
- if (!bfd_link_pic (info) && local)
- eh->dyn_relocs = NULL;
- /* If the symbol is used by a plabel, we must allocate a PLT slot.
- The refcounts are not reliable when it has been hidden since
- hide_symbol can be called before the plabel flag is set. */
- if (hppa_elf_hash_entry (eh)->plabel)
- eh->plt.refcount = 1;
- /* Note that unlike some other backends, the refcount is not
- incremented for a non-call (and non-plabel) function reference. */
- else if (eh->plt.refcount <= 0
- || local)
- {
- /* The .plt entry is not needed when:
- a) Garbage collection has removed all references to the
- symbol, or
- b) We know for certain the symbol is defined in this
- object, and it's not a weak definition, nor is the symbol
- used by a plabel relocation. Either this object is the
- application or we are doing a shared symbolic link. */
- eh->plt.offset = (bfd_vma) -1;
- eh->needs_plt = 0;
- }
- /* Unlike other targets, elf32-hppa.c does not define a function
- symbol in a non-pic executable on PLT stub code, so we don't
- have a local definition in that case. ie. dyn_relocs can't
- be discarded. */
- /* Function symbols can't have copy relocs. */
- return true;
- }
- else
- eh->plt.offset = (bfd_vma) -1;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- /* 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 (eh->is_weakalias)
- {
- struct elf_link_hash_entry *def = weakdef (eh);
- BFD_ASSERT (def->root.type == bfd_link_hash_defined);
- eh->root.u.def.section = def->root.u.def.section;
- eh->root.u.def.value = def->root.u.def.value;
- if (def->root.u.def.section == htab->etab.sdynbss
- || def->root.u.def.section == htab->etab.sdynrelro)
- eh->dyn_relocs = NULL;
- 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 (!eh->non_got_ref)
- return true;
- /* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
- return true;
- /* If we don't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (ELIMINATE_COPY_RELOCS
- && !alias_readonly_dynrelocs (eh))
- 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. */
- if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
- {
- sec = htab->etab.sdynrelro;
- srel = htab->etab.sreldynrelro;
- }
- else
- {
- sec = htab->etab.sdynbss;
- srel = htab->etab.srelbss;
- }
- if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
- {
- /* We must generate a COPY reloc to tell the dynamic linker to
- copy the initial value out of the dynamic object and into the
- runtime process image. */
- srel->size += sizeof (Elf32_External_Rela);
- eh->needs_copy = 1;
- }
- /* We no longer want dyn_relocs. */
- eh->dyn_relocs = NULL;
- return _bfd_elf_adjust_dynamic_copy (info, eh, sec);
- }
- /* If EH is undefined, make it dynamic if that makes sense. */
- static bool
- ensure_undef_dynamic (struct bfd_link_info *info,
- struct elf_link_hash_entry *eh)
- {
- struct elf_link_hash_table *htab = elf_hash_table (info);
- if (htab->dynamic_sections_created
- && (eh->root.type == bfd_link_hash_undefweak
- || eh->root.type == bfd_link_hash_undefined)
- && eh->dynindx == -1
- && !eh->forced_local
- && eh->type != STT_PARISC_MILLI
- && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)
- && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT)
- return bfd_elf_link_record_dynamic_symbol (info, eh);
- return true;
- }
- /* Allocate space in the .plt for entries that won't have relocations.
- ie. plabel entries. */
- static bool
- allocate_plt_static (struct elf_link_hash_entry *eh, void *inf)
- {
- struct bfd_link_info *info;
- struct elf32_hppa_link_hash_table *htab;
- struct elf32_hppa_link_hash_entry *hh;
- asection *sec;
- if (eh->root.type == bfd_link_hash_indirect)
- return true;
- info = (struct bfd_link_info *) inf;
- hh = hppa_elf_hash_entry (eh);
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- if (htab->etab.dynamic_sections_created
- && eh->plt.refcount > 0)
- {
- if (!ensure_undef_dynamic (info, eh))
- return false;
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), eh))
- {
- /* Allocate these later. From this point on, h->plabel
- means that the plt entry is only used by a plabel.
- We'll be using a normal plt entry for this symbol, so
- clear the plabel indicator. */
- hh->plabel = 0;
- }
- else if (hh->plabel)
- {
- /* Make an entry in the .plt section for plabel references
- that won't have a .plt entry for other reasons. */
- sec = htab->etab.splt;
- eh->plt.offset = sec->size;
- sec->size += PLT_ENTRY_SIZE;
- if (bfd_link_pic (info))
- htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
- }
- else
- {
- /* No .plt entry needed. */
- eh->plt.offset = (bfd_vma) -1;
- eh->needs_plt = 0;
- }
- }
- else
- {
- eh->plt.offset = (bfd_vma) -1;
- eh->needs_plt = 0;
- }
- return true;
- }
- /* Calculate size of GOT entries for symbol given its TLS_TYPE. */
- static inline unsigned int
- got_entries_needed (int tls_type)
- {
- unsigned int need = 0;
- if ((tls_type & GOT_NORMAL) != 0)
- need += GOT_ENTRY_SIZE;
- if ((tls_type & GOT_TLS_GD) != 0)
- need += GOT_ENTRY_SIZE * 2;
- if ((tls_type & GOT_TLS_IE) != 0)
- need += GOT_ENTRY_SIZE;
- return need;
- }
- /* Calculate size of relocs needed for symbol given its TLS_TYPE and
- NEEDed GOT entries. TPREL_KNOWN says a TPREL offset can be
- calculated at link time. DTPREL_KNOWN says the same for a DTPREL
- offset. */
- static inline unsigned int
- got_relocs_needed (int tls_type, unsigned int need,
- bool dtprel_known, bool tprel_known)
- {
- /* All the entries we allocated need relocs.
- Except for GD and IE with local symbols. */
- if ((tls_type & GOT_TLS_GD) != 0 && dtprel_known)
- need -= GOT_ENTRY_SIZE;
- if ((tls_type & GOT_TLS_IE) != 0 && tprel_known)
- need -= GOT_ENTRY_SIZE;
- return need * sizeof (Elf32_External_Rela) / GOT_ENTRY_SIZE;
- }
- /* Allocate space in .plt, .got and associated reloc sections for
- global syms. */
- static bool
- allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf)
- {
- struct bfd_link_info *info;
- struct elf32_hppa_link_hash_table *htab;
- asection *sec;
- struct elf32_hppa_link_hash_entry *hh;
- struct elf_dyn_relocs *hdh_p;
- if (eh->root.type == bfd_link_hash_indirect)
- return true;
- info = inf;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- hh = hppa_elf_hash_entry (eh);
- if (htab->etab.dynamic_sections_created
- && eh->plt.offset != (bfd_vma) -1
- && !hh->plabel
- && eh->plt.refcount > 0)
- {
- /* Make an entry in the .plt section. */
- sec = htab->etab.splt;
- eh->plt.offset = sec->size;
- sec->size += PLT_ENTRY_SIZE;
- /* We also need to make an entry in the .rela.plt section. */
- htab->etab.srelplt->size += sizeof (Elf32_External_Rela);
- htab->need_plt_stub = 1;
- }
- if (eh->got.refcount > 0)
- {
- unsigned int need;
- if (!ensure_undef_dynamic (info, eh))
- return false;
- sec = htab->etab.sgot;
- eh->got.offset = sec->size;
- need = got_entries_needed (hh->tls_type);
- sec->size += need;
- if (htab->etab.dynamic_sections_created
- && (bfd_link_dll (info)
- || (bfd_link_pic (info) && (hh->tls_type & GOT_NORMAL) != 0)
- || (eh->dynindx != -1
- && !SYMBOL_REFERENCES_LOCAL (info, eh)))
- && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
- {
- bool local = SYMBOL_REFERENCES_LOCAL (info, eh);
- htab->etab.srelgot->size
- += got_relocs_needed (hh->tls_type, need, local,
- local && bfd_link_executable (info));
- }
- }
- else
- eh->got.offset = (bfd_vma) -1;
- /* If no dynamic sections we can't have dynamic relocs. */
- if (!htab->etab.dynamic_sections_created)
- eh->dyn_relocs = NULL;
- /* Discard relocs on undefined syms with non-default visibility. */
- else if ((eh->root.type == bfd_link_hash_undefined
- && ELF_ST_VISIBILITY (eh->other) != STV_DEFAULT)
- || UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
- eh->dyn_relocs = NULL;
- if (eh->dyn_relocs == NULL)
- return true;
- /* If this is a -Bsymbolic shared link, then we need to discard all
- space allocated for dynamic pc-relative relocs against symbols
- defined in a regular object. For the normal shared case, discard
- space for relocs that have become local due to symbol visibility
- changes. */
- if (bfd_link_pic (info))
- {
- #if RELATIVE_DYNRELOCS
- if (SYMBOL_CALLS_LOCAL (info, eh))
- {
- struct elf_dyn_relocs **hdh_pp;
- for (hdh_pp = &eh->dyn_relocs; (hdh_p = *hdh_pp) != NULL; )
- {
- hdh_p->count -= hdh_p->pc_count;
- hdh_p->pc_count = 0;
- if (hdh_p->count == 0)
- *hdh_pp = hdh_p->next;
- else
- hdh_pp = &hdh_p->next;
- }
- }
- #endif
- if (eh->dyn_relocs != NULL)
- {
- if (!ensure_undef_dynamic (info, eh))
- 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 (eh->dynamic_adjusted
- && !eh->def_regular
- && !ELF_COMMON_DEF_P (eh))
- {
- if (!ensure_undef_dynamic (info, eh))
- return false;
- if (eh->dynindx == -1)
- eh->dyn_relocs = NULL;
- }
- else
- eh->dyn_relocs = NULL;
- }
- /* Finally, allocate space. */
- for (hdh_p = eh->dyn_relocs; hdh_p != NULL; hdh_p = hdh_p->next)
- {
- asection *sreloc = elf_section_data (hdh_p->sec)->sreloc;
- sreloc->size += hdh_p->count * sizeof (Elf32_External_Rela);
- }
- return true;
- }
- /* This function is called via elf_link_hash_traverse to force
- millicode symbols local so they do not end up as globals in the
- dynamic symbol table. We ought to be able to do this in
- adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
- for all dynamic symbols. Arguably, this is a bug in
- elf_adjust_dynamic_symbol. */
- static bool
- clobber_millicode_symbols (struct elf_link_hash_entry *eh,
- void *info)
- {
- if (eh->type == STT_PARISC_MILLI
- && !eh->forced_local)
- elf32_hppa_hide_symbol ((struct bfd_link_info *) info, eh, true);
- return true;
- }
- /* Set the sizes of the dynamic sections. */
- static bool
- elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
- {
- struct elf32_hppa_link_hash_table *htab;
- bfd *dynobj;
- bfd *ibfd;
- asection *sec;
- bool relocs;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->etab.dynobj;
- if (dynobj == NULL)
- abort ();
- if (htab->etab.dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (bfd_link_executable (info) && !info->nointerp)
- {
- sec = bfd_get_linker_section (dynobj, ".interp");
- if (sec == NULL)
- abort ();
- sec->size = sizeof ELF_DYNAMIC_INTERPRETER;
- sec->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- /* Force millicode symbols local. */
- elf_link_hash_traverse (&htab->etab,
- clobber_millicode_symbols,
- info);
- }
- /* Set up .got and .plt 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;
- bfd_signed_vma *local_plt;
- bfd_signed_vma *end_local_plt;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
- asection *srel;
- char *local_tls_type;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
- continue;
- for (sec = ibfd->sections; sec != NULL; sec = sec->next)
- {
- struct elf_dyn_relocs *hdh_p;
- for (hdh_p = ((struct elf_dyn_relocs *)
- elf_section_data (sec)->local_dynrel);
- hdh_p != NULL;
- hdh_p = hdh_p->next)
- {
- if (!bfd_is_abs_section (hdh_p->sec)
- && bfd_is_abs_section (hdh_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 (hdh_p->count != 0)
- {
- srel = elf_section_data (hdh_p->sec)->sreloc;
- srel->size += hdh_p->count * sizeof (Elf32_External_Rela);
- if ((hdh_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_tdata (ibfd)->symtab_hdr;
- locsymcount = symtab_hdr->sh_info;
- end_local_got = local_got + locsymcount;
- local_tls_type = hppa_elf_local_got_tls_type (ibfd);
- sec = htab->etab.sgot;
- srel = htab->etab.srelgot;
- for (; local_got < end_local_got; ++local_got)
- {
- if (*local_got > 0)
- {
- unsigned int need;
- *local_got = sec->size;
- need = got_entries_needed (*local_tls_type);
- sec->size += need;
- if (bfd_link_dll (info)
- || (bfd_link_pic (info)
- && (*local_tls_type & GOT_NORMAL) != 0))
- htab->etab.srelgot->size
- += got_relocs_needed (*local_tls_type, need, true,
- bfd_link_executable (info));
- }
- else
- *local_got = (bfd_vma) -1;
- ++local_tls_type;
- }
- local_plt = end_local_got;
- end_local_plt = local_plt + locsymcount;
- if (! htab->etab.dynamic_sections_created)
- {
- /* Won't be used, but be safe. */
- for (; local_plt < end_local_plt; ++local_plt)
- *local_plt = (bfd_vma) -1;
- }
- else
- {
- sec = htab->etab.splt;
- srel = htab->etab.srelplt;
- for (; local_plt < end_local_plt; ++local_plt)
- {
- if (*local_plt > 0)
- {
- *local_plt = sec->size;
- sec->size += PLT_ENTRY_SIZE;
- if (bfd_link_pic (info))
- srel->size += sizeof (Elf32_External_Rela);
- }
- else
- *local_plt = (bfd_vma) -1;
- }
- }
- }
- if (htab->tls_ldm_got.refcount > 0)
- {
- /* Allocate 2 got entries and 1 dynamic reloc for
- R_PARISC_TLS_DTPMOD32 relocs. */
- htab->tls_ldm_got.offset = htab->etab.sgot->size;
- htab->etab.sgot->size += (GOT_ENTRY_SIZE * 2);
- htab->etab.srelgot->size += sizeof (Elf32_External_Rela);
- }
- else
- htab->tls_ldm_got.offset = -1;
- /* Do all the .plt entries without relocs first. The dynamic linker
- uses the last .plt reloc to find the end of the .plt (and hence
- the start of the .got) for lazy linking. */
- elf_link_hash_traverse (&htab->etab, allocate_plt_static, info);
- /* Allocate global sym .plt and .got entries, and space for global
- sym dynamic relocs. */
- elf_link_hash_traverse (&htab->etab, allocate_dynrelocs, info);
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- relocs = false;
- for (sec = dynobj->sections; sec != NULL; sec = sec->next)
- {
- if ((sec->flags & SEC_LINKER_CREATED) == 0)
- continue;
- if (sec == htab->etab.splt)
- {
- if (htab->need_plt_stub)
- {
- /* Make space for the plt stub at the end of the .plt
- section. We want this stub right at the end, up
- against the .got section. */
- int gotalign = bfd_section_alignment (htab->etab.sgot);
- int pltalign = bfd_section_alignment (sec);
- int align = gotalign > 3 ? gotalign : 3;
- bfd_size_type mask;
- if (align > pltalign)
- bfd_set_section_alignment (sec, align);
- mask = ((bfd_size_type) 1 << gotalign) - 1;
- sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask;
- }
- }
- else if (sec == htab->etab.sgot
- || sec == htab->etab.sdynbss
- || sec == htab->etab.sdynrelro)
- ;
- else if (startswith (bfd_section_name (sec), ".rela"))
- {
- if (sec->size != 0)
- {
- /* Remember whether there are any reloc sections other
- than .rela.plt. */
- if (sec != htab->etab.srelplt)
- relocs = true;
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- sec->reloc_count = 0;
- }
- }
- else
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
- if (sec->size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they 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. */
- sec->flags |= SEC_EXCLUDE;
- continue;
- }
- if ((sec->flags & SEC_HAS_CONTENTS) == 0)
- continue;
- /* Allocate memory for the section contents. Zero it, because
- we may not fill in all the reloc sections. */
- sec->contents = bfd_zalloc (dynobj, sec->size);
- if (sec->contents == NULL)
- return false;
- }
- return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
- }
- /* External entry points for sizing and building linker stubs. */
- /* Set up various things so that we can make a list of input sections
- for each output section included in the link. Returns -1 on error,
- 0 when no stubs will be needed, and 1 on success. */
- int
- elf32_hppa_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info)
- {
- bfd *input_bfd;
- unsigned int bfd_count;
- unsigned int top_id, top_index;
- asection *section;
- asection **input_list, **list;
- size_t amt;
- struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return -1;
- /* Count the number of input BFDs and find the top input section id. */
- for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
- input_bfd != NULL;
- input_bfd = input_bfd->link.next)
- {
- bfd_count += 1;
- for (section = input_bfd->sections;
- section != NULL;
- section = section->next)
- {
- if (top_id < section->id)
- top_id = section->id;
- }
- }
- htab->bfd_count = bfd_count;
- amt = sizeof (struct map_stub) * (top_id + 1);
- htab->stub_group = bfd_zmalloc (amt);
- if (htab->stub_group == NULL)
- return -1;
- /* We can't use output_bfd->section_count here to find the top output
- section index as some sections may have been removed, and
- strip_excluded_output_sections doesn't renumber the indices. */
- for (section = output_bfd->sections, top_index = 0;
- section != NULL;
- section = section->next)
- {
- if (top_index < section->index)
- top_index = section->index;
- }
- htab->top_index = top_index;
- amt = sizeof (asection *) * (top_index + 1);
- input_list = bfd_malloc (amt);
- htab->input_list = input_list;
- if (input_list == NULL)
- return -1;
- /* For sections we aren't interested in, mark their entries with a
- value we can check later. */
- list = input_list + top_index;
- do
- *list = bfd_abs_section_ptr;
- while (list-- != input_list);
- for (section = output_bfd->sections;
- section != NULL;
- section = section->next)
- {
- if ((section->flags & SEC_CODE) != 0)
- input_list[section->index] = NULL;
- }
- return 1;
- }
- /* The linker repeatedly calls this function for each input section,
- in the order that input sections are linked into output sections.
- Build lists of input sections to determine groupings between which
- we may insert linker stubs. */
- void
- elf32_hppa_next_input_section (struct bfd_link_info *info, asection *isec)
- {
- struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return;
- if (isec->output_section->index <= htab->top_index)
- {
- asection **list = htab->input_list + isec->output_section->index;
- if (*list != bfd_abs_section_ptr)
- {
- /* Steal the link_sec pointer for our list. */
- #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
- /* This happens to make the list in reverse order,
- which is what we want. */
- PREV_SEC (isec) = *list;
- *list = isec;
- }
- }
- }
- /* See whether we can group stub sections together. Grouping stub
- sections may result in fewer stubs. More importantly, we need to
- put all .init* and .fini* stubs at the beginning of the .init or
- .fini output sections respectively, because glibc splits the
- _init and _fini functions into multiple parts. Putting a stub in
- the middle of a function is not a good idea. */
- static void
- group_sections (struct elf32_hppa_link_hash_table *htab,
- bfd_size_type stub_group_size,
- bool stubs_always_before_branch)
- {
- asection **list = htab->input_list + htab->top_index;
- do
- {
- asection *tail = *list;
- if (tail == bfd_abs_section_ptr)
- continue;
- while (tail != NULL)
- {
- asection *curr;
- asection *prev;
- bfd_size_type total;
- bool big_sec;
- curr = tail;
- total = tail->size;
- big_sec = total >= stub_group_size;
- while ((prev = PREV_SEC (curr)) != NULL
- && ((total += curr->output_offset - prev->output_offset)
- < stub_group_size))
- curr = prev;
- /* OK, the size from the start of CURR to the end is less
- than 240000 bytes and thus can be handled by one stub
- section. (or the tail section is itself larger than
- 240000 bytes, in which case we may be toast.)
- We should really be keeping track of the total size of
- stubs added here, as stubs contribute to the final output
- section size. That's a little tricky, and this way will
- only break if stubs added total more than 22144 bytes, or
- 2768 long branch stubs. It seems unlikely for more than
- 2768 different functions to be called, especially from
- code only 240000 bytes long. This limit used to be
- 250000, but c++ code tends to generate lots of little
- functions, and sometimes violated the assumption. */
- do
- {
- prev = PREV_SEC (tail);
- /* Set up this stub group. */
- htab->stub_group[tail->id].link_sec = curr;
- }
- while (tail != curr && (tail = prev) != NULL);
- /* But wait, there's more! Input sections up to 240000
- bytes before the stub section can be handled by it too.
- Don't do this if we have a really large section after the
- stubs, as adding more stubs increases the chance that
- branches may not reach into the stub section. */
- if (!stubs_always_before_branch && !big_sec)
- {
- total = 0;
- while (prev != NULL
- && ((total += tail->output_offset - prev->output_offset)
- < stub_group_size))
- {
- tail = prev;
- prev = PREV_SEC (tail);
- htab->stub_group[tail->id].link_sec = curr;
- }
- }
- tail = prev;
- }
- }
- while (list-- != htab->input_list);
- free (htab->input_list);
- #undef PREV_SEC
- }
- /* Read in all local syms for all input bfds, and create hash entries
- for export stubs if we are building a multi-subspace shared lib.
- Returns -1 on error, 1 if export stubs created, 0 otherwise. */
- static int
- get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info)
- {
- unsigned int bfd_indx;
- Elf_Internal_Sym *local_syms, **all_local_syms;
- int stub_changed = 0;
- struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return -1;
- /* We want to read in symbol extension records only once. To do this
- we need to read in the local symbols in parallel and save them for
- later use; so hold pointers to the local symbols in an array. */
- size_t amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
- all_local_syms = bfd_zmalloc (amt);
- htab->all_local_syms = all_local_syms;
- if (all_local_syms == NULL)
- return -1;
- /* Walk over all the input BFDs, swapping in local symbols.
- If we are creating a shared library, create hash entries for the
- export stubs. */
- for (bfd_indx = 0;
- input_bfd != NULL;
- input_bfd = input_bfd->link.next, bfd_indx++)
- {
- Elf_Internal_Shdr *symtab_hdr;
- /* We'll need the symbol table in a second. */
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- if (symtab_hdr->sh_info == 0)
- continue;
- /* We need an array of the local symbols attached to the input bfd. */
- local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
- if (local_syms == NULL)
- {
- local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
- symtab_hdr->sh_info, 0,
- NULL, NULL, NULL);
- /* Cache them for elf_link_input_bfd. */
- symtab_hdr->contents = (unsigned char *) local_syms;
- }
- if (local_syms == NULL)
- return -1;
- all_local_syms[bfd_indx] = local_syms;
- if (bfd_link_pic (info) && htab->multi_subspace)
- {
- struct elf_link_hash_entry **eh_syms;
- struct elf_link_hash_entry **eh_symend;
- unsigned int symcount;
- symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- - symtab_hdr->sh_info);
- eh_syms = (struct elf_link_hash_entry **) elf_sym_hashes (input_bfd);
- eh_symend = (struct elf_link_hash_entry **) (eh_syms + symcount);
- /* Look through the global syms for functions; We need to
- build export stubs for all globally visible functions. */
- for (; eh_syms < eh_symend; eh_syms++)
- {
- struct elf32_hppa_link_hash_entry *hh;
- hh = hppa_elf_hash_entry (*eh_syms);
- while (hh->eh.root.type == bfd_link_hash_indirect
- || hh->eh.root.type == bfd_link_hash_warning)
- hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
- /* At this point in the link, undefined syms have been
- resolved, so we need to check that the symbol was
- defined in this BFD. */
- if ((hh->eh.root.type == bfd_link_hash_defined
- || hh->eh.root.type == bfd_link_hash_defweak)
- && hh->eh.type == STT_FUNC
- && hh->eh.root.u.def.section->output_section != NULL
- && (hh->eh.root.u.def.section->output_section->owner
- == output_bfd)
- && hh->eh.root.u.def.section->owner == input_bfd
- && hh->eh.def_regular
- && !hh->eh.forced_local
- && ELF_ST_VISIBILITY (hh->eh.other) == STV_DEFAULT)
- {
- asection *sec;
- const char *stub_name;
- struct elf32_hppa_stub_hash_entry *hsh;
- sec = hh->eh.root.u.def.section;
- stub_name = hh_name (hh);
- hsh = hppa_stub_hash_lookup (&htab->bstab,
- stub_name,
- false, false);
- if (hsh == NULL)
- {
- hsh = hppa_add_stub (stub_name, sec, htab);
- if (!hsh)
- return -1;
- hsh->target_value = hh->eh.root.u.def.value;
- hsh->target_section = hh->eh.root.u.def.section;
- hsh->stub_type = hppa_stub_export;
- hsh->hh = hh;
- stub_changed = 1;
- }
- else
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: duplicate export stub %s"),
- input_bfd, stub_name);
- }
- }
- }
- }
- }
- return stub_changed;
- }
- /* Determine and set the size of the stub section for a final link.
- The basic idea here is to examine all the relocations looking for
- PC-relative calls to a target that is unreachable with a "bl"
- instruction. */
- bool
- elf32_hppa_size_stubs
- (bfd *output_bfd, bfd *stub_bfd, struct bfd_link_info *info,
- bool multi_subspace, bfd_signed_vma group_size,
- asection * (*add_stub_section) (const char *, asection *),
- void (*layout_sections_again) (void))
- {
- bfd_size_type stub_group_size;
- bool stubs_always_before_branch;
- bool stub_changed;
- struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- /* Stash our params away. */
- htab->stub_bfd = stub_bfd;
- htab->multi_subspace = multi_subspace;
- htab->add_stub_section = add_stub_section;
- htab->layout_sections_again = layout_sections_again;
- stubs_always_before_branch = group_size < 0;
- if (group_size < 0)
- stub_group_size = -group_size;
- else
- stub_group_size = group_size;
- if (stub_group_size == 1)
- {
- /* Default values. */
- if (stubs_always_before_branch)
- {
- stub_group_size = 7680000;
- if (htab->has_17bit_branch || htab->multi_subspace)
- stub_group_size = 240000;
- if (htab->has_12bit_branch)
- stub_group_size = 7500;
- }
- else
- {
- stub_group_size = 6971392;
- if (htab->has_17bit_branch || htab->multi_subspace)
- stub_group_size = 217856;
- if (htab->has_12bit_branch)
- stub_group_size = 6808;
- }
- }
- group_sections (htab, stub_group_size, stubs_always_before_branch);
- switch (get_local_syms (output_bfd, info->input_bfds, info))
- {
- default:
- if (htab->all_local_syms)
- goto error_ret_free_local;
- return false;
- case 0:
- stub_changed = false;
- break;
- case 1:
- stub_changed = true;
- break;
- }
- while (1)
- {
- bfd *input_bfd;
- unsigned int bfd_indx;
- asection *stub_sec;
- for (input_bfd = info->input_bfds, bfd_indx = 0;
- input_bfd != NULL;
- input_bfd = input_bfd->link.next, bfd_indx++)
- {
- Elf_Internal_Shdr *symtab_hdr;
- asection *section;
- Elf_Internal_Sym *local_syms;
- /* We'll need the symbol table in a second. */
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- if (symtab_hdr->sh_info == 0)
- continue;
- local_syms = htab->all_local_syms[bfd_indx];
- /* Walk over each section attached to the input bfd. */
- for (section = input_bfd->sections;
- section != NULL;
- section = section->next)
- {
- Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
- /* If there aren't any relocs, then there's nothing more
- to do. */
- if ((section->flags & SEC_RELOC) == 0
- || (section->flags & SEC_ALLOC) == 0
- || (section->flags & SEC_LOAD) == 0
- || (section->flags & SEC_CODE) == 0
- || section->reloc_count == 0)
- continue;
- /* If this section is a link-once section that will be
- discarded, then don't create any stubs. */
- if (section->output_section == NULL
- || section->output_section->owner != output_bfd)
- continue;
- /* Get the relocs. */
- internal_relocs
- = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
- info->keep_memory);
- if (internal_relocs == NULL)
- goto error_ret_free_local;
- /* Now examine each relocation. */
- irela = internal_relocs;
- irelaend = irela + section->reloc_count;
- for (; irela < irelaend; irela++)
- {
- unsigned int r_type, r_indx;
- enum elf32_hppa_stub_type stub_type;
- struct elf32_hppa_stub_hash_entry *hsh;
- asection *sym_sec;
- bfd_vma sym_value;
- bfd_vma destination;
- struct elf32_hppa_link_hash_entry *hh;
- char *stub_name;
- const asection *id_sec;
- r_type = ELF32_R_TYPE (irela->r_info);
- r_indx = ELF32_R_SYM (irela->r_info);
- if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
- {
- bfd_set_error (bfd_error_bad_value);
- error_ret_free_internal:
- if (elf_section_data (section)->relocs == NULL)
- free (internal_relocs);
- goto error_ret_free_local;
- }
- /* Only look for stubs on call instructions. */
- if (r_type != (unsigned int) R_PARISC_PCREL12F
- && r_type != (unsigned int) R_PARISC_PCREL17F
- && r_type != (unsigned int) R_PARISC_PCREL22F)
- continue;
- /* Now determine the call target, its name, value,
- section. */
- sym_sec = NULL;
- sym_value = 0;
- destination = -1;
- hh = NULL;
- if (r_indx < symtab_hdr->sh_info)
- {
- /* It's a local symbol. */
- Elf_Internal_Sym *sym;
- Elf_Internal_Shdr *hdr;
- unsigned int shndx;
- sym = local_syms + r_indx;
- if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
- sym_value = sym->st_value;
- shndx = sym->st_shndx;
- if (shndx < elf_numsections (input_bfd))
- {
- hdr = elf_elfsections (input_bfd)[shndx];
- sym_sec = hdr->bfd_section;
- destination = (sym_value + irela->r_addend
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
- }
- }
- else
- {
- /* It's an external symbol. */
- int e_indx;
- e_indx = r_indx - symtab_hdr->sh_info;
- hh = hppa_elf_hash_entry (elf_sym_hashes (input_bfd)[e_indx]);
- while (hh->eh.root.type == bfd_link_hash_indirect
- || hh->eh.root.type == bfd_link_hash_warning)
- hh = hppa_elf_hash_entry (hh->eh.root.u.i.link);
- if (hh->eh.root.type == bfd_link_hash_defined
- || hh->eh.root.type == bfd_link_hash_defweak)
- {
- sym_sec = hh->eh.root.u.def.section;
- sym_value = hh->eh.root.u.def.value;
- if (sym_sec->output_section != NULL)
- destination = (sym_value + irela->r_addend
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
- }
- else if (hh->eh.root.type == bfd_link_hash_undefweak)
- {
- if (! bfd_link_pic (info))
- continue;
- }
- else if (hh->eh.root.type == bfd_link_hash_undefined)
- {
- if (! (info->unresolved_syms_in_objects == RM_IGNORE
- && (ELF_ST_VISIBILITY (hh->eh.other)
- == STV_DEFAULT)
- && hh->eh.type != STT_PARISC_MILLI))
- continue;
- }
- else
- {
- bfd_set_error (bfd_error_bad_value);
- goto error_ret_free_internal;
- }
- }
- /* Determine what (if any) linker stub is needed. */
- stub_type = hppa_type_of_stub (section, irela, hh,
- destination, info);
- if (stub_type == hppa_stub_none)
- continue;
- /* Support for grouping stub sections. */
- id_sec = htab->stub_group[section->id].link_sec;
- /* Get the name of this stub. */
- stub_name = hppa_stub_name (id_sec, sym_sec, hh, irela);
- if (!stub_name)
- goto error_ret_free_internal;
- hsh = hppa_stub_hash_lookup (&htab->bstab,
- stub_name,
- false, false);
- if (hsh != NULL)
- {
- /* The proper stub has already been created. */
- free (stub_name);
- continue;
- }
- hsh = hppa_add_stub (stub_name, section, htab);
- if (hsh == NULL)
- {
- free (stub_name);
- goto error_ret_free_internal;
- }
- hsh->target_value = sym_value;
- hsh->target_section = sym_sec;
- hsh->stub_type = stub_type;
- if (bfd_link_pic (info))
- {
- if (stub_type == hppa_stub_import)
- hsh->stub_type = hppa_stub_import_shared;
- else if (stub_type == hppa_stub_long_branch)
- hsh->stub_type = hppa_stub_long_branch_shared;
- }
- hsh->hh = hh;
- stub_changed = true;
- }
- /* We're done with the internal relocs, free them. */
- if (elf_section_data (section)->relocs == NULL)
- free (internal_relocs);
- }
- }
- if (!stub_changed)
- break;
- /* OK, we've added some stubs. Find out the new size of the
- stub sections. */
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
- stub_sec->size = 0;
- bfd_hash_traverse (&htab->bstab, hppa_size_one_stub, htab);
- /* Ask the linker to do its stuff. */
- (*htab->layout_sections_again) ();
- stub_changed = false;
- }
- free (htab->all_local_syms);
- return true;
- error_ret_free_local:
- free (htab->all_local_syms);
- return false;
- }
- /* For a final link, this function is called after we have sized the
- stubs to provide a value for __gp. */
- bool
- elf32_hppa_set_gp (bfd *abfd, struct bfd_link_info *info)
- {
- struct bfd_link_hash_entry *h;
- asection *sec = NULL;
- bfd_vma gp_val = 0;
- h = bfd_link_hash_lookup (info->hash, "$global$", false, false, false);
- if (h != NULL
- && (h->type == bfd_link_hash_defined
- || h->type == bfd_link_hash_defweak))
- {
- gp_val = h->u.def.value;
- sec = h->u.def.section;
- }
- else
- {
- asection *splt = bfd_get_section_by_name (abfd, ".plt");
- asection *sgot = bfd_get_section_by_name (abfd, ".got");
- /* Choose to point our LTP at, in this order, one of .plt, .got,
- or .data, if these sections exist. In the case of choosing
- .plt try to make the LTP ideal for addressing anywhere in the
- .plt or .got with a 14 bit signed offset. Typically, the end
- of the .plt is the start of the .got, so choose .plt + 0x2000
- if either the .plt or .got is larger than 0x2000. If both
- the .plt and .got are smaller than 0x2000, choose the end of
- the .plt section. */
- sec = strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") == 0
- ? NULL : splt;
- if (sec != NULL)
- {
- gp_val = sec->size;
- if (gp_val > 0x2000 || (sgot && sgot->size > 0x2000))
- {
- gp_val = 0x2000;
- }
- }
- else
- {
- sec = sgot;
- if (sec != NULL)
- {
- if (strcmp (bfd_get_target (abfd), "elf32-hppa-netbsd") != 0)
- {
- /* We know we don't have a .plt. If .got is large,
- offset our LTP. */
- if (sec->size > 0x2000)
- gp_val = 0x2000;
- }
- }
- else
- {
- /* No .plt or .got. Who cares what the LTP is? */
- sec = bfd_get_section_by_name (abfd, ".data");
- }
- }
- if (h != NULL)
- {
- h->type = bfd_link_hash_defined;
- h->u.def.value = gp_val;
- if (sec != NULL)
- h->u.def.section = sec;
- else
- h->u.def.section = bfd_abs_section_ptr;
- }
- }
- if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
- {
- if (sec != NULL && sec->output_section != NULL)
- gp_val += sec->output_section->vma + sec->output_offset;
- elf_gp (abfd) = gp_val;
- }
- return true;
- }
- /* Build all the stubs associated with the current output file. The
- stubs are kept in a hash table attached to the main linker hash
- table. We also set up the .plt entries for statically linked PIC
- functions here. This function is called via hppaelf_finish in the
- linker. */
- bool
- elf32_hppa_build_stubs (struct bfd_link_info *info)
- {
- asection *stub_sec;
- struct bfd_hash_table *table;
- struct elf32_hppa_link_hash_table *htab;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- for (stub_sec = htab->stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
- if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
- && stub_sec->size != 0)
- {
- /* Allocate memory to hold the linker stubs. */
- stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
- if (stub_sec->contents == NULL)
- return false;
- stub_sec->size = 0;
- }
- /* Build the stubs as directed by the stub hash table. */
- table = &htab->bstab;
- bfd_hash_traverse (table, hppa_build_one_stub, info);
- return true;
- }
- /* Return the base vma address which should be subtracted from the real
- address when resolving a 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 R_PARISC_TLS_TPOFF*.. */
- 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;
- /* hppa TLS ABI is variant I and static TLS block start just after
- tcbhead structure which has 2 pointer fields. */
- return (address - htab->tls_sec->vma
- + align_power ((bfd_vma) 8, htab->tls_sec->alignment_power));
- }
- /* Perform a final link. */
- static bool
- elf32_hppa_final_link (bfd *abfd, struct bfd_link_info *info)
- {
- struct stat buf;
- /* Invoke the regular ELF linker to do all the work. */
- if (!bfd_elf_final_link (abfd, info))
- return false;
- /* If we're producing a final executable, sort the contents of the
- unwind section. */
- if (bfd_link_relocatable (info))
- return true;
- /* Do not attempt to sort non-regular files. This is here
- especially for configure scripts and kernel builds which run
- tests with "ld [...] -o /dev/null". */
- if (stat (bfd_get_filename (abfd), &buf) != 0
- || !S_ISREG(buf.st_mode))
- return true;
- return elf_hppa_sort_unwind (abfd);
- }
- /* Record the lowest address for the data and text segments. */
- static void
- hppa_record_segment_addr (bfd *abfd, asection *section, void *data)
- {
- struct elf32_hppa_link_hash_table *htab;
- htab = (struct elf32_hppa_link_hash_table*) data;
- if (htab == NULL)
- return;
- if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
- {
- bfd_vma value;
- Elf_Internal_Phdr *p;
- p = _bfd_elf_find_segment_containing_section (abfd, section->output_section);
- BFD_ASSERT (p != NULL);
- value = p->p_vaddr;
- if ((section->flags & SEC_READONLY) != 0)
- {
- if (value < htab->text_segment_base)
- htab->text_segment_base = value;
- }
- else
- {
- if (value < htab->data_segment_base)
- htab->data_segment_base = value;
- }
- }
- }
- /* Perform a relocation as part of a final link. */
- static bfd_reloc_status_type
- final_link_relocate (asection *input_section,
- bfd_byte *contents,
- const Elf_Internal_Rela *rela,
- bfd_vma value,
- struct elf32_hppa_link_hash_table *htab,
- asection *sym_sec,
- struct elf32_hppa_link_hash_entry *hh,
- struct bfd_link_info *info)
- {
- unsigned int insn;
- unsigned int r_type = ELF32_R_TYPE (rela->r_info);
- unsigned int orig_r_type = r_type;
- reloc_howto_type *howto = elf_hppa_howto_table + r_type;
- int r_format = howto->bitsize;
- enum hppa_reloc_field_selector_type_alt r_field;
- bfd *input_bfd = input_section->owner;
- bfd_vma offset = rela->r_offset;
- bfd_vma max_branch_offset = 0;
- bfd_byte *hit_data = contents + offset;
- bfd_signed_vma addend = rela->r_addend;
- bfd_vma location;
- struct elf32_hppa_stub_hash_entry *hsh = NULL;
- int val;
- if (r_type == R_PARISC_NONE)
- return bfd_reloc_ok;
- insn = bfd_get_32 (input_bfd, hit_data);
- /* Find out where we are and where we're going. */
- location = (offset +
- input_section->output_offset +
- input_section->output_section->vma);
- /* If we are not building a shared library, convert DLTIND relocs to
- DPREL relocs. */
- if (!bfd_link_pic (info))
- {
- switch (r_type)
- {
- case R_PARISC_DLTIND21L:
- case R_PARISC_TLS_GD21L:
- case R_PARISC_TLS_LDM21L:
- case R_PARISC_TLS_IE21L:
- r_type = R_PARISC_DPREL21L;
- break;
- case R_PARISC_DLTIND14R:
- case R_PARISC_TLS_GD14R:
- case R_PARISC_TLS_LDM14R:
- case R_PARISC_TLS_IE14R:
- r_type = R_PARISC_DPREL14R;
- break;
- case R_PARISC_DLTIND14F:
- r_type = R_PARISC_DPREL14F;
- break;
- }
- }
- switch (r_type)
- {
- case R_PARISC_PCREL12F:
- case R_PARISC_PCREL17F:
- case R_PARISC_PCREL22F:
- /* If this call should go via the plt, find the import stub in
- the stub hash. */
- if (sym_sec == NULL
- || sym_sec->output_section == NULL
- || (hh != NULL
- && hh->eh.plt.offset != (bfd_vma) -1
- && hh->eh.dynindx != -1
- && !hh->plabel
- && (bfd_link_pic (info)
- || !hh->eh.def_regular
- || hh->eh.root.type == bfd_link_hash_defweak)))
- {
- hsh = hppa_get_stub_entry (input_section, sym_sec,
- hh, rela, htab);
- if (hsh != NULL)
- {
- value = (hsh->stub_offset
- + hsh->stub_sec->output_offset
- + hsh->stub_sec->output_section->vma);
- addend = 0;
- }
- else if (sym_sec == NULL && hh != NULL
- && hh->eh.root.type == bfd_link_hash_undefweak)
- {
- /* It's OK if undefined weak. Calls to undefined weak
- symbols behave as if the "called" function
- immediately returns. We can thus call to a weak
- function without first checking whether the function
- is defined. */
- value = location;
- addend = 8;
- }
- else
- return bfd_reloc_undefined;
- }
- /* Fall thru. */
- case R_PARISC_PCREL21L:
- case R_PARISC_PCREL17C:
- case R_PARISC_PCREL17R:
- case R_PARISC_PCREL14R:
- case R_PARISC_PCREL14F:
- case R_PARISC_PCREL32:
- /* Make it a pc relative offset. */
- value -= location;
- addend -= 8;
- break;
- case R_PARISC_DPREL21L:
- case R_PARISC_DPREL14R:
- case R_PARISC_DPREL14F:
- /* Convert instructions that use the linkage table pointer (r19) to
- instructions that use the global data pointer (dp). This is the
- most efficient way of using PIC code in an incomplete executable,
- but the user must follow the standard runtime conventions for
- accessing data for this to work. */
- if (orig_r_type != r_type)
- {
- if (r_type == R_PARISC_DPREL21L)
- {
- /* GCC sometimes uses a register other than r19 for the
- operation, so we must convert any addil instruction
- that uses this relocation. */
- if ((insn & 0xfc000000) == OP_ADDIL << 26)
- insn = ADDIL_DP;
- else
- /* We must have a ldil instruction. It's too hard to find
- and convert the associated add instruction, so issue an
- error. */
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB(%pA+%#" PRIx64 "): %s fixup for insn %#x "
- "is not supported in a non-shared link"),
- input_bfd,
- input_section,
- (uint64_t) offset,
- howto->name,
- insn);
- }
- else if (r_type == R_PARISC_DPREL14F)
- {
- /* This must be a format 1 load/store. Change the base
- register to dp. */
- insn = (insn & 0xfc1ffff) | (27 << 21);
- }
- }
- /* For all the DP relative relocations, we need to examine the symbol's
- section. If it has no section or if it's a code section, then
- "data pointer relative" makes no sense. In that case we don't
- adjust the "value", and for 21 bit addil instructions, we change the
- source addend register from %dp to %r0. This situation commonly
- arises for undefined weak symbols and when a variable's "constness"
- is declared differently from the way the variable is defined. For
- instance: "extern int foo" with foo defined as "const int foo". */
- if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
- {
- if ((insn & ((0x3fu << 26) | (0x1f << 21)))
- == ((OP_ADDIL << 26) | (27 << 21)))
- {
- insn &= ~ (0x1f << 21);
- }
- /* Now try to make things easy for the dynamic linker. */
- break;
- }
- /* Fall thru. */
- case R_PARISC_DLTIND21L:
- case R_PARISC_DLTIND14R:
- case R_PARISC_DLTIND14F:
- case R_PARISC_TLS_GD21L:
- case R_PARISC_TLS_LDM21L:
- case R_PARISC_TLS_IE21L:
- case R_PARISC_TLS_GD14R:
- case R_PARISC_TLS_LDM14R:
- case R_PARISC_TLS_IE14R:
- value -= elf_gp (input_section->output_section->owner);
- break;
- case R_PARISC_SEGREL32:
- if ((sym_sec->flags & SEC_CODE) != 0)
- value -= htab->text_segment_base;
- else
- value -= htab->data_segment_base;
- break;
- default:
- break;
- }
- switch (r_type)
- {
- case R_PARISC_DIR32:
- case R_PARISC_DIR14F:
- case R_PARISC_DIR17F:
- case R_PARISC_PCREL17C:
- case R_PARISC_PCREL14F:
- case R_PARISC_PCREL32:
- case R_PARISC_DPREL14F:
- case R_PARISC_PLABEL32:
- case R_PARISC_DLTIND14F:
- case R_PARISC_SEGBASE:
- case R_PARISC_SEGREL32:
- case R_PARISC_TLS_DTPMOD32:
- case R_PARISC_TLS_DTPOFF32:
- case R_PARISC_TLS_TPREL32:
- r_field = e_fsel;
- break;
- case R_PARISC_DLTIND21L:
- case R_PARISC_PCREL21L:
- case R_PARISC_PLABEL21L:
- r_field = e_lsel;
- break;
- case R_PARISC_DIR21L:
- case R_PARISC_DPREL21L:
- case R_PARISC_TLS_GD21L:
- case R_PARISC_TLS_LDM21L:
- case R_PARISC_TLS_LDO21L:
- case R_PARISC_TLS_IE21L:
- case R_PARISC_TLS_LE21L:
- r_field = e_lrsel;
- break;
- case R_PARISC_PCREL17R:
- case R_PARISC_PCREL14R:
- case R_PARISC_PLABEL14R:
- case R_PARISC_DLTIND14R:
- r_field = e_rsel;
- break;
- case R_PARISC_DIR17R:
- case R_PARISC_DIR14R:
- case R_PARISC_DPREL14R:
- case R_PARISC_TLS_GD14R:
- case R_PARISC_TLS_LDM14R:
- case R_PARISC_TLS_LDO14R:
- case R_PARISC_TLS_IE14R:
- case R_PARISC_TLS_LE14R:
- r_field = e_rrsel;
- break;
- case R_PARISC_PCREL12F:
- case R_PARISC_PCREL17F:
- case R_PARISC_PCREL22F:
- r_field = e_fsel;
- if (r_type == (unsigned int) R_PARISC_PCREL17F)
- {
- max_branch_offset = (1 << (17-1)) << 2;
- }
- else if (r_type == (unsigned int) R_PARISC_PCREL12F)
- {
- max_branch_offset = (1 << (12-1)) << 2;
- }
- else
- {
- max_branch_offset = (1 << (22-1)) << 2;
- }
- /* sym_sec is NULL on undefined weak syms or when shared on
- undefined syms. We've already checked for a stub for the
- shared undefined case. */
- if (sym_sec == NULL)
- break;
- /* If the branch is out of reach, then redirect the
- call to the local stub for this function. */
- if (value + addend + max_branch_offset >= 2*max_branch_offset)
- {
- hsh = hppa_get_stub_entry (input_section, sym_sec,
- hh, rela, htab);
- if (hsh == NULL)
- return bfd_reloc_undefined;
- /* Munge up the value and addend so that we call the stub
- rather than the procedure directly. */
- value = (hsh->stub_offset
- + hsh->stub_sec->output_offset
- + hsh->stub_sec->output_section->vma
- - location);
- addend = -8;
- }
- break;
- /* Something we don't know how to handle. */
- default:
- return bfd_reloc_notsupported;
- }
- /* Make sure we can reach the stub. */
- if (max_branch_offset != 0
- && value + addend + max_branch_offset >= 2*max_branch_offset)
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB(%pA+%#" PRIx64 "): cannot reach %s, "
- "recompile with -ffunction-sections"),
- input_bfd,
- input_section,
- (uint64_t) offset,
- hsh->bh_root.string);
- bfd_set_error (bfd_error_bad_value);
- return bfd_reloc_notsupported;
- }
- val = hppa_field_adjust (value, addend, r_field);
- switch (r_type)
- {
- case R_PARISC_PCREL12F:
- case R_PARISC_PCREL17C:
- case R_PARISC_PCREL17F:
- case R_PARISC_PCREL17R:
- case R_PARISC_PCREL22F:
- case R_PARISC_DIR17F:
- case R_PARISC_DIR17R:
- /* This is a branch. Divide the offset by four.
- Note that we need to decide whether it's a branch or
- otherwise by inspecting the reloc. Inspecting insn won't
- work as insn might be from a .word directive. */
- val >>= 2;
- break;
- default:
- break;
- }
- insn = hppa_rebuild_insn (insn, val, r_format);
- /* Update the instruction word. */
- bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
- return bfd_reloc_ok;
- }
- /* Relocate an HPPA ELF section. */
- static int
- elf32_hppa_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)
- {
- bfd_vma *local_got_offsets;
- struct elf32_hppa_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Rela *rela;
- Elf_Internal_Rela *relend;
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- local_got_offsets = elf_local_got_offsets (input_bfd);
- rela = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rela < relend; rela++)
- {
- unsigned int r_type;
- reloc_howto_type *howto;
- unsigned int r_symndx;
- struct elf32_hppa_link_hash_entry *hh;
- Elf_Internal_Sym *sym;
- asection *sym_sec;
- bfd_vma relocation;
- bfd_reloc_status_type rstatus;
- const char *sym_name;
- bool plabel;
- bool warned_undef;
- r_type = ELF32_R_TYPE (rela->r_info);
- if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
- || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
- continue;
- r_symndx = ELF32_R_SYM (rela->r_info);
- hh = NULL;
- sym = NULL;
- sym_sec = NULL;
- warned_undef = false;
- if (r_symndx < symtab_hdr->sh_info)
- {
- /* This is a local symbol, h defaults to NULL. */
- sym = local_syms + r_symndx;
- sym_sec = local_sections[r_symndx];
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sym_sec, rela);
- }
- else
- {
- struct elf_link_hash_entry *eh;
- bool unresolved_reloc, ignored;
- struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
- RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rela,
- r_symndx, symtab_hdr, sym_hashes,
- eh, sym_sec, relocation,
- unresolved_reloc, warned_undef,
- ignored);
- if (!bfd_link_relocatable (info)
- && relocation == 0
- && eh->root.type != bfd_link_hash_defined
- && eh->root.type != bfd_link_hash_defweak
- && eh->root.type != bfd_link_hash_undefweak)
- {
- if (info->unresolved_syms_in_objects == RM_IGNORE
- && ELF_ST_VISIBILITY (eh->other) == STV_DEFAULT
- && eh->type == STT_PARISC_MILLI)
- {
- (*info->callbacks->undefined_symbol)
- (info, eh_name (eh), input_bfd,
- input_section, rela->r_offset, false);
- warned_undef = true;
- }
- }
- hh = hppa_elf_hash_entry (eh);
- }
- if (sym_sec != NULL && discarded_section (sym_sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rela, 1, relend,
- elf_hppa_howto_table + r_type, 0,
- contents);
- if (bfd_link_relocatable (info))
- continue;
- /* Do any required modifications to the relocation value, and
- determine what types of dynamic info we need to output, if
- any. */
- plabel = 0;
- switch (r_type)
- {
- case R_PARISC_DLTIND14F:
- case R_PARISC_DLTIND14R:
- case R_PARISC_DLTIND21L:
- {
- bfd_vma off;
- bool do_got = false;
- bool reloc = bfd_link_pic (info);
- /* Relocation is to the entry for this symbol in the
- global offset table. */
- if (hh != NULL)
- {
- bool dyn;
- off = hh->eh.got.offset;
- dyn = htab->etab.dynamic_sections_created;
- reloc = (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh)
- && (reloc
- || (hh->eh.dynindx != -1
- && !SYMBOL_REFERENCES_LOCAL (info, &hh->eh))));
- if (!reloc
- || !WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- &hh->eh))
- {
- /* If we aren't going to call finish_dynamic_symbol,
- then we need to handle initialisation of the .got
- entry and create needed relocs here. Since the
- offset must always be a multiple of 4, we use the
- least significant bit to record whether we have
- initialised it already. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- hh->eh.got.offset |= 1;
- do_got = true;
- }
- }
- }
- else
- {
- /* Local symbol case. */
- if (local_got_offsets == NULL)
- abort ();
- off = local_got_offsets[r_symndx];
- /* The offset must always be a multiple of 4. We use
- the least significant bit to record whether we have
- already generated the necessary reloc. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- local_got_offsets[r_symndx] |= 1;
- do_got = true;
- }
- }
- if (do_got)
- {
- if (reloc)
- {
- /* Output a dynamic relocation for this GOT entry.
- In this case it is relative to the base of the
- object because the symbol index is zero. */
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- asection *sec = htab->etab.srelgot;
- outrel.r_offset = (off
- + htab->etab.sgot->output_offset
- + htab->etab.sgot->output_section->vma);
- outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
- outrel.r_addend = relocation;
- loc = sec->contents;
- loc += sec->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- }
- else
- bfd_put_32 (output_bfd, relocation,
- htab->etab.sgot->contents + off);
- }
- if (off >= (bfd_vma) -2)
- abort ();
- /* Add the base of the GOT to the relocation value. */
- relocation = (off
- + htab->etab.sgot->output_offset
- + htab->etab.sgot->output_section->vma);
- }
- break;
- case R_PARISC_SEGREL32:
- /* If this is the first SEGREL relocation, then initialize
- the segment base values. */
- if (htab->text_segment_base == (bfd_vma) -1)
- bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
- break;
- case R_PARISC_PLABEL14R:
- case R_PARISC_PLABEL21L:
- case R_PARISC_PLABEL32:
- if (htab->etab.dynamic_sections_created)
- {
- bfd_vma off;
- bool do_plt = 0;
- /* If we have a global symbol with a PLT slot, then
- redirect this relocation to it. */
- if (hh != NULL)
- {
- off = hh->eh.plt.offset;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1,
- bfd_link_pic (info),
- &hh->eh))
- {
- /* In a non-shared link, adjust_dynamic_symbol
- isn't called for symbols forced local. We
- need to write out the plt entry here. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- hh->eh.plt.offset |= 1;
- do_plt = 1;
- }
- }
- }
- else
- {
- bfd_vma *local_plt_offsets;
- if (local_got_offsets == NULL)
- abort ();
- local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
- off = local_plt_offsets[r_symndx];
- /* As for the local .got entry case, we use the last
- bit to record whether we've already initialised
- this local .plt entry. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- local_plt_offsets[r_symndx] |= 1;
- do_plt = 1;
- }
- }
- if (do_plt)
- {
- if (bfd_link_pic (info))
- {
- /* Output a dynamic IPLT relocation for this
- PLT entry. */
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- asection *s = htab->etab.srelplt;
- outrel.r_offset = (off
- + htab->etab.splt->output_offset
- + htab->etab.splt->output_section->vma);
- outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
- outrel.r_addend = relocation;
- loc = s->contents;
- loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- }
- else
- {
- bfd_put_32 (output_bfd,
- relocation,
- htab->etab.splt->contents + off);
- bfd_put_32 (output_bfd,
- elf_gp (htab->etab.splt->output_section->owner),
- htab->etab.splt->contents + off + 4);
- }
- }
- if (off >= (bfd_vma) -2)
- abort ();
- /* PLABELs contain function pointers. Relocation is to
- the entry for the function in the .plt. The magic +2
- offset signals to $$dyncall that the function pointer
- is in the .plt and thus has a gp pointer too.
- Exception: Undefined PLABELs should have a value of
- zero. */
- if (hh == NULL
- || (hh->eh.root.type != bfd_link_hash_undefweak
- && hh->eh.root.type != bfd_link_hash_undefined))
- {
- relocation = (off
- + htab->etab.splt->output_offset
- + htab->etab.splt->output_section->vma
- + 2);
- }
- plabel = 1;
- }
- /* Fall through. */
- case R_PARISC_DIR17F:
- case R_PARISC_DIR17R:
- case R_PARISC_DIR14F:
- case R_PARISC_DIR14R:
- case R_PARISC_DIR21L:
- case R_PARISC_DPREL14F:
- case R_PARISC_DPREL14R:
- case R_PARISC_DPREL21L:
- case R_PARISC_DIR32:
- if ((input_section->flags & SEC_ALLOC) == 0)
- break;
- if (bfd_link_pic (info)
- ? ((hh == NULL
- || hh->eh.dyn_relocs != NULL)
- && ((hh != NULL && pc_dynrelocs (hh))
- || IS_ABSOLUTE_RELOC (r_type)))
- : (hh != NULL
- && hh->eh.dyn_relocs != NULL))
- {
- Elf_Internal_Rela outrel;
- bool skip;
- asection *sreloc;
- bfd_byte *loc;
- /* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
- outrel.r_addend = rela->r_addend;
- outrel.r_offset =
- _bfd_elf_section_offset (output_bfd, info, input_section,
- rela->r_offset);
- skip = (outrel.r_offset == (bfd_vma) -1
- || outrel.r_offset == (bfd_vma) -2);
- outrel.r_offset += (input_section->output_offset
- + input_section->output_section->vma);
- if (skip)
- {
- memset (&outrel, 0, sizeof (outrel));
- }
- else if (hh != NULL
- && hh->eh.dynindx != -1
- && (plabel
- || !IS_ABSOLUTE_RELOC (r_type)
- || !bfd_link_pic (info)
- || !SYMBOLIC_BIND (info, &hh->eh)
- || !hh->eh.def_regular))
- {
- outrel.r_info = ELF32_R_INFO (hh->eh.dynindx, r_type);
- }
- else /* It's a local symbol, or one marked to become local. */
- {
- int indx = 0;
- /* Add the absolute offset of the symbol. */
- outrel.r_addend += relocation;
- /* Global plabels need to be processed by the
- dynamic linker so that functions have at most one
- fptr. For this reason, we need to differentiate
- between global and local plabels, which we do by
- providing the function symbol for a global plabel
- reloc, and no symbol for local plabels. */
- if (! plabel
- && sym_sec != NULL
- && sym_sec->output_section != NULL
- && ! bfd_is_abs_section (sym_sec))
- {
- asection *osec;
- osec = sym_sec->output_section;
- indx = elf_section_data (osec)->dynindx;
- if (indx == 0)
- {
- osec = htab->etab.text_index_section;
- indx = elf_section_data (osec)->dynindx;
- }
- BFD_ASSERT (indx != 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 = ELF32_R_INFO (indx, r_type);
- }
- sreloc = elf_section_data (input_section)->sreloc;
- if (sreloc == NULL)
- abort ();
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- }
- break;
- case R_PARISC_TLS_LDM21L:
- case R_PARISC_TLS_LDM14R:
- {
- bfd_vma off;
- off = htab->tls_ldm_got.offset;
- if (off & 1)
- off &= ~1;
- else
- {
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- outrel.r_offset = (off
- + htab->etab.sgot->output_section->vma
- + htab->etab.sgot->output_offset);
- outrel.r_addend = 0;
- outrel.r_info = ELF32_R_INFO (0, R_PARISC_TLS_DTPMOD32);
- loc = htab->etab.srelgot->contents;
- loc += htab->etab.srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- htab->tls_ldm_got.offset |= 1;
- }
- /* Add the base of the GOT to the relocation value. */
- relocation = (off
- + htab->etab.sgot->output_offset
- + htab->etab.sgot->output_section->vma);
- break;
- }
- case R_PARISC_TLS_LDO21L:
- case R_PARISC_TLS_LDO14R:
- relocation -= dtpoff_base (info);
- break;
- case R_PARISC_TLS_GD21L:
- case R_PARISC_TLS_GD14R:
- case R_PARISC_TLS_IE21L:
- case R_PARISC_TLS_IE14R:
- {
- bfd_vma off;
- int indx;
- char tls_type;
- indx = 0;
- if (hh != NULL)
- {
- if (!htab->etab.dynamic_sections_created
- || hh->eh.dynindx == -1
- || SYMBOL_REFERENCES_LOCAL (info, &hh->eh)
- || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))
- /* 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. */
- ;
- else
- indx = hh->eh.dynindx;
- off = hh->eh.got.offset;
- tls_type = hh->tls_type;
- }
- else
- {
- off = local_got_offsets[r_symndx];
- tls_type = hppa_elf_local_got_tls_type (input_bfd)[r_symndx];
- }
- if (tls_type == GOT_UNKNOWN)
- abort ();
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bool need_relocs = false;
- Elf_Internal_Rela outrel;
- bfd_byte *loc = NULL;
- int cur_off = off;
- /* The GOT entries have not been initialized yet. Do it
- now, and emit any relocations. If both an IE GOT and a
- GD GOT are necessary, we emit the GD first. */
- if (indx != 0
- || (bfd_link_dll (info)
- && (hh == NULL
- || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh))))
- {
- need_relocs = true;
- loc = htab->etab.srelgot->contents;
- loc += (htab->etab.srelgot->reloc_count
- * sizeof (Elf32_External_Rela));
- }
- if (tls_type & GOT_TLS_GD)
- {
- if (need_relocs)
- {
- outrel.r_offset
- = (cur_off
- + htab->etab.sgot->output_section->vma
- + htab->etab.sgot->output_offset);
- outrel.r_info
- = ELF32_R_INFO (indx, R_PARISC_TLS_DTPMOD32);
- outrel.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- htab->etab.srelgot->reloc_count++;
- loc += sizeof (Elf32_External_Rela);
- bfd_put_32 (output_bfd, 0,
- htab->etab.sgot->contents + cur_off);
- }
- else
- /* If we are not emitting relocations for a
- general dynamic reference, then we must be in a
- static link or an executable link with the
- symbol binding locally. Mark it as belonging
- to module 1, the executable. */
- bfd_put_32 (output_bfd, 1,
- htab->etab.sgot->contents + cur_off);
- if (indx != 0)
- {
- outrel.r_info
- = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32);
- outrel.r_offset += 4;
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- htab->etab.srelgot->reloc_count++;
- loc += sizeof (Elf32_External_Rela);
- bfd_put_32 (output_bfd, 0,
- htab->etab.sgot->contents + cur_off + 4);
- }
- else
- bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
- htab->etab.sgot->contents + cur_off + 4);
- cur_off += 8;
- }
- if (tls_type & GOT_TLS_IE)
- {
- if (need_relocs
- && !(bfd_link_executable (info)
- && SYMBOL_REFERENCES_LOCAL (info, &hh->eh)))
- {
- outrel.r_offset
- = (cur_off
- + htab->etab.sgot->output_section->vma
- + htab->etab.sgot->output_offset);
- outrel.r_info = ELF32_R_INFO (indx,
- R_PARISC_TLS_TPREL32);
- if (indx == 0)
- outrel.r_addend = relocation - dtpoff_base (info);
- else
- outrel.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- htab->etab.srelgot->reloc_count++;
- loc += sizeof (Elf32_External_Rela);
- }
- else
- bfd_put_32 (output_bfd, tpoff (info, relocation),
- htab->etab.sgot->contents + cur_off);
- cur_off += 4;
- }
- if (hh != NULL)
- hh->eh.got.offset |= 1;
- else
- local_got_offsets[r_symndx] |= 1;
- }
- if ((tls_type & GOT_NORMAL) != 0
- && (tls_type & (GOT_TLS_GD | GOT_TLS_LDM | GOT_TLS_IE)) != 0)
- {
- if (hh != NULL)
- _bfd_error_handler (_("%s has both normal and TLS relocs"),
- hh_name (hh));
- else
- {
- Elf_Internal_Sym *isym
- = bfd_sym_from_r_symndx (&htab->etab.sym_cache,
- input_bfd, r_symndx);
- if (isym == NULL)
- return false;
- sym_name
- = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- isym->st_name);
- if (sym_name == NULL)
- return false;
- if (*sym_name == '\0')
- sym_name = bfd_section_name (sym_sec);
- _bfd_error_handler
- (_("%pB:%s has both normal and TLS relocs"),
- input_bfd, sym_name);
- }
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- if ((tls_type & GOT_TLS_GD)
- && r_type != R_PARISC_TLS_GD21L
- && r_type != R_PARISC_TLS_GD14R)
- off += 2 * GOT_ENTRY_SIZE;
- /* Add the base of the GOT to the relocation value. */
- relocation = (off
- + htab->etab.sgot->output_offset
- + htab->etab.sgot->output_section->vma);
- break;
- }
- case R_PARISC_TLS_LE21L:
- case R_PARISC_TLS_LE14R:
- {
- relocation = tpoff (info, relocation);
- break;
- }
- break;
- default:
- break;
- }
- rstatus = final_link_relocate (input_section, contents, rela, relocation,
- htab, sym_sec, hh, info);
- if (rstatus == bfd_reloc_ok)
- continue;
- if (hh != NULL)
- sym_name = hh_name (hh);
- else
- {
- sym_name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (sym_name == NULL)
- return false;
- if (*sym_name == '\0')
- sym_name = bfd_section_name (sym_sec);
- }
- howto = elf_hppa_howto_table + r_type;
- if (rstatus == bfd_reloc_undefined || rstatus == bfd_reloc_notsupported)
- {
- if (rstatus == bfd_reloc_notsupported || !warned_undef)
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB(%pA+%#" PRIx64 "): cannot handle %s for %s"),
- input_bfd,
- input_section,
- (uint64_t) rela->r_offset,
- howto->name,
- sym_name);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- }
- else
- (*info->callbacks->reloc_overflow)
- (info, (hh ? &hh->eh.root : NULL), sym_name, howto->name,
- (bfd_vma) 0, input_bfd, input_section, rela->r_offset);
- }
- return true;
- }
- /* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
- static bool
- elf32_hppa_finish_dynamic_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *eh,
- Elf_Internal_Sym *sym)
- {
- struct elf32_hppa_link_hash_table *htab;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- if (eh->plt.offset != (bfd_vma) -1)
- {
- bfd_vma value;
- if (eh->plt.offset & 1)
- abort ();
- /* This symbol has an entry in the procedure linkage table. Set
- it up.
- The format of a plt entry is
- <funcaddr>
- <__gp>
- */
- value = 0;
- if (eh->root.type == bfd_link_hash_defined
- || eh->root.type == bfd_link_hash_defweak)
- {
- value = eh->root.u.def.value;
- if (eh->root.u.def.section->output_section != NULL)
- value += (eh->root.u.def.section->output_offset
- + eh->root.u.def.section->output_section->vma);
- }
- /* Create a dynamic IPLT relocation for this entry. */
- rela.r_offset = (eh->plt.offset
- + htab->etab.splt->output_offset
- + htab->etab.splt->output_section->vma);
- if (eh->dynindx != -1)
- {
- rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_IPLT);
- rela.r_addend = 0;
- }
- else
- {
- /* This symbol has been marked to become local, and is
- used by a plabel so must be kept in the .plt. */
- rela.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
- rela.r_addend = value;
- }
- loc = htab->etab.srelplt->contents;
- loc += htab->etab.srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (htab->etab.splt->output_section->owner, &rela, loc);
- if (!eh->def_regular)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
- }
- }
- if (eh->got.offset != (bfd_vma) -1
- && (hppa_elf_hash_entry (eh)->tls_type & GOT_NORMAL) != 0
- && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh))
- {
- bool is_dyn = (eh->dynindx != -1
- && !SYMBOL_REFERENCES_LOCAL (info, eh));
- if (is_dyn || bfd_link_pic (info))
- {
- /* This symbol has an entry in the global offset table. Set
- it up. */
- rela.r_offset = ((eh->got.offset &~ (bfd_vma) 1)
- + htab->etab.sgot->output_offset
- + htab->etab.sgot->output_section->vma);
- /* If this 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 (!is_dyn)
- {
- rela.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
- rela.r_addend = (eh->root.u.def.value
- + eh->root.u.def.section->output_offset
- + eh->root.u.def.section->output_section->vma);
- }
- else
- {
- if ((eh->got.offset & 1) != 0)
- abort ();
- bfd_put_32 (output_bfd, 0,
- htab->etab.sgot->contents + (eh->got.offset & ~1));
- rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_DIR32);
- rela.r_addend = 0;
- }
- loc = htab->etab.srelgot->contents;
- loc += (htab->etab.srelgot->reloc_count++
- * sizeof (Elf32_External_Rela));
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- }
- }
- if (eh->needs_copy)
- {
- asection *sec;
- /* This symbol needs a copy reloc. Set it up. */
- if (! (eh->dynindx != -1
- && (eh->root.type == bfd_link_hash_defined
- || eh->root.type == bfd_link_hash_defweak)))
- abort ();
- rela.r_offset = (eh->root.u.def.value
- + eh->root.u.def.section->output_offset
- + eh->root.u.def.section->output_section->vma);
- rela.r_addend = 0;
- rela.r_info = ELF32_R_INFO (eh->dynindx, R_PARISC_COPY);
- if (eh->root.u.def.section == htab->etab.sdynrelro)
- sec = htab->etab.sreldynrelro;
- else
- sec = htab->etab.srelbss;
- loc = sec->contents + sec->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- }
- /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
- if (eh == htab->etab.hdynamic || eh == htab->etab.hgot)
- {
- 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
- elf32_hppa_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
- const asection *rel_sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela *rela)
- {
- /* Handle TLS relocs first; we don't want them to be marked
- relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
- check below. */
- switch ((int) ELF32_R_TYPE (rela->r_info))
- {
- case R_PARISC_TLS_DTPMOD32:
- case R_PARISC_TLS_DTPOFF32:
- case R_PARISC_TLS_TPREL32:
- return reloc_class_normal;
- }
- if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
- return reloc_class_relative;
- switch ((int) ELF32_R_TYPE (rela->r_info))
- {
- case R_PARISC_IPLT:
- return reloc_class_plt;
- case R_PARISC_COPY:
- return reloc_class_copy;
- default:
- return reloc_class_normal;
- }
- }
- /* Finish up the dynamic sections. */
- static bool
- elf32_hppa_finish_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- bfd *dynobj;
- struct elf32_hppa_link_hash_table *htab;
- asection *sdyn;
- asection * sgot;
- htab = hppa_link_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->etab.dynobj;
- sgot = htab->etab.sgot;
- /* A broken linker script might have discarded the dynamic sections.
- Catch this here so that we do not seg-fault later on. */
- if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
- return false;
- sdyn = bfd_get_linker_section (dynobj, ".dynamic");
- if (htab->etab.dynamic_sections_created)
- {
- Elf32_External_Dyn *dyncon, *dynconend;
- if (sdyn == NULL)
- abort ();
- dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
- for (; dyncon < dynconend; dyncon++)
- {
- Elf_Internal_Dyn dyn;
- asection *s;
- bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
- switch (dyn.d_tag)
- {
- default:
- continue;
- case DT_PLTGOT:
- /* Use PLTGOT to set the GOT register. */
- dyn.d_un.d_ptr = elf_gp (output_bfd);
- break;
- case DT_JMPREL:
- s = htab->etab.srelplt;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- break;
- case DT_PLTRELSZ:
- s = htab->etab.srelplt;
- dyn.d_un.d_val = s->size;
- break;
- }
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- }
- if (sgot != NULL && sgot->size != 0)
- {
- /* Fill in the first entry in the global offset table.
- We use it to point to our dynamic section, if we have one. */
- bfd_put_32 (output_bfd,
- sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0,
- sgot->contents);
- /* The second entry is reserved for use by the dynamic linker. */
- memset (sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
- /* Set .got entry size. */
- elf_section_data (sgot->output_section)
- ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
- }
- if (htab->etab.splt != NULL && htab->etab.splt->size != 0)
- {
- /* Set plt entry size to 0 instead of PLT_ENTRY_SIZE, since we add the
- plt stubs and as such the section does not hold a table of fixed-size
- entries. */
- elf_section_data (htab->etab.splt->output_section)->this_hdr.sh_entsize = 0;
- if (htab->need_plt_stub)
- {
- /* Set up the .plt stub. */
- memcpy (htab->etab.splt->contents
- + htab->etab.splt->size - sizeof (plt_stub),
- plt_stub, sizeof (plt_stub));
- if ((htab->etab.splt->output_offset
- + htab->etab.splt->output_section->vma
- + htab->etab.splt->size)
- != (sgot->output_offset
- + sgot->output_section->vma))
- {
- _bfd_error_handler
- (_(".got section not immediately after .plt section"));
- return false;
- }
- }
- }
- return true;
- }
- /* Called when writing out an object file to decide the type of a
- symbol. */
- static int
- elf32_hppa_elf_get_symbol_type (Elf_Internal_Sym *elf_sym, int type)
- {
- if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
- return STT_PARISC_MILLI;
- else
- return type;
- }
- /* Misc BFD support code. */
- #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
- #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
- #define bfd_elf32_bfd_reloc_name_lookup elf_hppa_reloc_name_lookup
- #define elf_info_to_howto elf_hppa_info_to_howto
- #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
- /* Stuff for the BFD linker. */
- #define bfd_elf32_bfd_final_link elf32_hppa_final_link
- #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
- #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
- #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
- #define elf_backend_check_relocs elf32_hppa_check_relocs
- #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible
- #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
- #define elf_backend_fake_sections elf_hppa_fake_sections
- #define elf_backend_relocate_section elf32_hppa_relocate_section
- #define elf_backend_hide_symbol elf32_hppa_hide_symbol
- #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
- #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
- #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
- #define elf_backend_init_index_section _bfd_elf_init_1_index_section
- #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
- #define elf_backend_grok_prstatus elf32_hppa_grok_prstatus
- #define elf_backend_grok_psinfo elf32_hppa_grok_psinfo
- #define elf_backend_object_p elf32_hppa_object_p
- #define elf_backend_final_write_processing elf_hppa_final_write_processing
- #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
- #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
- #define elf_backend_action_discarded elf_hppa_action_discarded
- #define elf_backend_can_gc_sections 1
- #define elf_backend_can_refcount 1
- #define elf_backend_plt_alignment 2
- #define elf_backend_want_got_plt 0
- #define elf_backend_plt_readonly 0
- #define elf_backend_want_plt_sym 0
- #define elf_backend_got_header_size 8
- #define elf_backend_want_dynrelro 1
- #define elf_backend_rela_normal 1
- #define elf_backend_dtrel_excludes_plt 1
- #define elf_backend_no_page_alias 1
- #define TARGET_BIG_SYM hppa_elf32_vec
- #define TARGET_BIG_NAME "elf32-hppa"
- #define ELF_ARCH bfd_arch_hppa
- #define ELF_TARGET_ID HPPA32_ELF_DATA
- #define ELF_MACHINE_CODE EM_PARISC
- #define ELF_MAXPAGESIZE 0x1000
- #define ELF_OSABI ELFOSABI_HPUX
- #define elf32_bed elf32_hppa_hpux_bed
- #include "elf32-target.h"
- #undef TARGET_BIG_SYM
- #define TARGET_BIG_SYM hppa_elf32_linux_vec
- #undef TARGET_BIG_NAME
- #define TARGET_BIG_NAME "elf32-hppa-linux"
- #undef ELF_OSABI
- #define ELF_OSABI ELFOSABI_GNU
- #undef elf32_bed
- #define elf32_bed elf32_hppa_linux_bed
- #include "elf32-target.h"
- #undef TARGET_BIG_SYM
- #define TARGET_BIG_SYM hppa_elf32_nbsd_vec
- #undef TARGET_BIG_NAME
- #define TARGET_BIG_NAME "elf32-hppa-netbsd"
- #undef ELF_OSABI
- #define ELF_OSABI ELFOSABI_NETBSD
- #undef elf32_bed
- #define elf32_bed elf32_hppa_netbsd_bed
- #include "elf32-target.h"
|