123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680168116821683168416851686168716881689169016911692169316941695169616971698169917001701170217031704170517061707170817091710171117121713171417151716171717181719172017211722172317241725172617271728172917301731173217331734173517361737173817391740174117421743174417451746174717481749175017511752175317541755175617571758175917601761176217631764176517661767176817691770177117721773177417751776177717781779178017811782178317841785178617871788178917901791179217931794179517961797179817991800180118021803180418051806180718081809181018111812181318141815181618171818181918201821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890189118921893189418951896189718981899190019011902190319041905190619071908190919101911191219131914191519161917191819191920192119221923192419251926192719281929193019311932193319341935193619371938193919401941194219431944194519461947194819491950195119521953195419551956195719581959196019611962196319641965196619671968196919701971197219731974197519761977197819791980198119821983198419851986198719881989199019911992199319941995199619971998199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025202620272028202920302031203220332034203520362037203820392040204120422043204420452046204720482049205020512052205320542055205620572058205920602061206220632064206520662067206820692070207120722073207420752076207720782079208020812082208320842085208620872088208920902091209220932094209520962097209820992100210121022103210421052106210721082109211021112112211321142115211621172118211921202121212221232124212521262127212821292130213121322133213421352136213721382139214021412142214321442145214621472148214921502151215221532154215521562157215821592160216121622163216421652166216721682169217021712172217321742175217621772178217921802181218221832184218521862187218821892190219121922193219421952196219721982199220022012202220322042205220622072208220922102211221222132214221522162217221822192220222122222223222422252226222722282229223022312232223322342235223622372238223922402241224222432244224522462247224822492250225122522253225422552256225722582259226022612262226322642265226622672268226922702271227222732274227522762277227822792280228122822283228422852286228722882289229022912292229322942295229622972298229923002301230223032304230523062307230823092310231123122313231423152316231723182319232023212322232323242325232623272328232923302331233223332334233523362337233823392340234123422343234423452346234723482349235023512352235323542355235623572358235923602361236223632364236523662367236823692370237123722373237423752376237723782379238023812382238323842385238623872388238923902391239223932394239523962397239823992400240124022403240424052406240724082409241024112412241324142415241624172418241924202421242224232424242524262427242824292430243124322433243424352436243724382439244024412442244324442445244624472448244924502451245224532454245524562457245824592460246124622463246424652466246724682469247024712472247324742475247624772478247924802481248224832484248524862487248824892490249124922493249424952496249724982499250025012502250325042505250625072508250925102511251225132514251525162517251825192520252125222523252425252526252725282529253025312532253325342535253625372538253925402541254225432544254525462547254825492550255125522553255425552556255725582559256025612562256325642565256625672568256925702571257225732574257525762577257825792580258125822583258425852586258725882589259025912592259325942595259625972598259926002601260226032604260526062607260826092610261126122613261426152616261726182619262026212622262326242625262626272628262926302631263226332634263526362637263826392640264126422643264426452646264726482649265026512652265326542655265626572658265926602661266226632664266526662667266826692670267126722673267426752676267726782679268026812682268326842685268626872688268926902691269226932694269526962697269826992700270127022703270427052706270727082709271027112712271327142715271627172718271927202721272227232724272527262727272827292730273127322733273427352736273727382739274027412742274327442745274627472748274927502751275227532754275527562757275827592760276127622763276427652766276727682769277027712772277327742775277627772778277927802781278227832784278527862787278827892790279127922793279427952796279727982799280028012802280328042805280628072808280928102811281228132814281528162817281828192820282128222823282428252826282728282829283028312832283328342835283628372838283928402841284228432844284528462847284828492850285128522853285428552856285728582859286028612862286328642865286628672868286928702871287228732874287528762877287828792880288128822883288428852886288728882889289028912892289328942895289628972898289929002901290229032904290529062907290829092910291129122913291429152916291729182919292029212922292329242925292629272928292929302931293229332934293529362937293829392940294129422943294429452946294729482949295029512952295329542955295629572958295929602961296229632964296529662967296829692970297129722973297429752976297729782979298029812982298329842985298629872988298929902991299229932994299529962997299829993000300130023003300430053006300730083009301030113012301330143015301630173018301930203021302230233024302530263027302830293030303130323033303430353036303730383039304030413042304330443045304630473048304930503051305230533054305530563057305830593060306130623063306430653066306730683069307030713072307330743075307630773078307930803081308230833084308530863087308830893090309130923093309430953096309730983099310031013102310331043105310631073108310931103111311231133114311531163117311831193120312131223123312431253126312731283129313031313132313331343135313631373138313931403141314231433144314531463147314831493150315131523153315431553156315731583159316031613162316331643165316631673168316931703171317231733174317531763177317831793180318131823183318431853186318731883189319031913192319331943195319631973198319932003201320232033204320532063207320832093210321132123213321432153216321732183219322032213222322332243225322632273228322932303231323232333234323532363237323832393240324132423243324432453246324732483249325032513252325332543255325632573258325932603261326232633264326532663267326832693270327132723273327432753276327732783279328032813282328332843285328632873288328932903291329232933294329532963297329832993300330133023303330433053306330733083309331033113312331333143315331633173318331933203321332233233324332533263327332833293330333133323333333433353336333733383339334033413342334333443345334633473348334933503351335233533354335533563357335833593360336133623363336433653366336733683369337033713372337333743375337633773378337933803381338233833384338533863387338833893390339133923393339433953396339733983399340034013402340334043405340634073408340934103411341234133414341534163417341834193420342134223423342434253426342734283429343034313432343334343435343634373438343934403441344234433444344534463447344834493450345134523453345434553456345734583459346034613462346334643465346634673468346934703471347234733474347534763477347834793480348134823483348434853486348734883489349034913492349334943495349634973498349935003501350235033504350535063507350835093510351135123513351435153516351735183519352035213522352335243525352635273528352935303531353235333534353535363537353835393540354135423543354435453546354735483549355035513552355335543555355635573558355935603561356235633564356535663567356835693570357135723573357435753576357735783579358035813582358335843585358635873588358935903591359235933594359535963597359835993600360136023603360436053606360736083609361036113612361336143615361636173618361936203621362236233624362536263627362836293630363136323633363436353636363736383639364036413642364336443645364636473648364936503651365236533654365536563657365836593660366136623663366436653666366736683669367036713672367336743675367636773678367936803681368236833684368536863687368836893690369136923693369436953696369736983699370037013702370337043705370637073708370937103711371237133714 |
- /* M32R-specific support for 32-bit ELF.
- Copyright (C) 1996-2022 Free Software Foundation, Inc.
- 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/m32r.h"
- #define NOP_INSN 0x7000
- #define MAKE_PARALLEL(insn) ((insn) | 0x8000)
- /* Use REL instead of RELA to save space.
- This only saves space in libraries and object files, but perhaps
- relocs will be put in ROM? All in all though, REL relocs are a pain
- to work with. */
- /* #define USE_REL 1
- #ifndef USE_REL
- #define USE_REL 0
- #endif */
- /* Use RELA. But use REL to link old objects for backwords compatibility. */
- /* Functions for the M32R ELF linker. */
- /* The name of the dynamic interpreter. This is put in the .interp
- section. */
- #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
- /* The nop opcode we use. */
- #define M32R_NOP 0x7000f000
- #define PLT_EMPTY 0x10101010 /* RIE -> RIE */
- /* The size in bytes of an entry in the procedure linkage table. */
- #define PLT_ENTRY_SIZE 20
- #define PLT_HEADER_SIZE 20
- /* The first one entries in a procedure linkage table are reserved,
- and the initial contents are unimportant (we zero them out).
- Subsequent entries look like this. */
- #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */
- #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */
- #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */
- #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */
- #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
- #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */
- #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */
- #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */
- #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */
- #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */
- #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */
- #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */
- #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */
- #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */
- #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */
- #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */
- #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */
- /* Utility to actually perform an R_M32R_10_PCREL reloc. */
- static bfd_reloc_status_type
- m32r_elf_do_10_pcrel_reloc (bfd *abfd,
- reloc_howto_type *howto,
- asection *input_section,
- bfd_byte *data,
- bfd_vma offset,
- asection *symbol_section ATTRIBUTE_UNUSED,
- bfd_vma symbol_value,
- bfd_vma addend)
- {
- bfd_signed_vma relocation;
- unsigned long x;
- bfd_reloc_status_type status;
- /* Sanity check the address (offset in section). */
- if (offset > bfd_get_section_limit (abfd, input_section))
- return bfd_reloc_outofrange;
- relocation = symbol_value + addend;
- /* Make it pc relative. */
- relocation -= (input_section->output_section->vma
- + input_section->output_offset);
- /* These jumps mask off the lower two bits of the current address
- before doing pcrel calculations. */
- relocation -= (offset & -(bfd_vma) 4);
- if (relocation < -0x200 || relocation > 0x1ff)
- status = bfd_reloc_overflow;
- else
- status = bfd_reloc_ok;
- x = bfd_get_16 (abfd, data + offset);
- relocation >>= howto->rightshift;
- relocation <<= howto->bitpos;
- x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
- bfd_put_16 (abfd, (bfd_vma) x, data + offset);
- return status;
- }
- /* Handle the R_M32R_10_PCREL reloc. */
- static bfd_reloc_status_type
- m32r_elf_10_pcrel_reloc (bfd * abfd,
- arelent * reloc_entry,
- asymbol * symbol,
- void * data,
- asection * input_section,
- bfd * output_bfd,
- char ** error_message ATTRIBUTE_UNUSED)
- {
- /* This part is from bfd_elf_generic_reloc. */
- if (output_bfd != NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && (! reloc_entry->howto->partial_inplace
- || reloc_entry->addend == 0))
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- if (output_bfd != NULL)
- /* FIXME: See bfd_perform_relocation. Is this right? */
- return bfd_reloc_continue;
- return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
- input_section,
- data, reloc_entry->address,
- symbol->section,
- (symbol->value
- + symbol->section->output_section->vma
- + symbol->section->output_offset),
- reloc_entry->addend);
- }
- /* Do generic partial_inplace relocation.
- This is a local replacement for bfd_elf_generic_reloc. */
- static bfd_reloc_status_type
- m32r_elf_generic_reloc (bfd *input_bfd,
- arelent *reloc_entry,
- asymbol *symbol,
- void * data,
- asection *input_section,
- bfd *output_bfd,
- char **error_message ATTRIBUTE_UNUSED)
- {
- bfd_reloc_status_type ret;
- bfd_vma relocation;
- bfd_byte *inplace_address;
- /* This part is from bfd_elf_generic_reloc.
- If we're relocating, and this an external symbol, we don't want
- to change anything. */
- if (output_bfd != NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- /* Now do the reloc in the usual way.
- ??? It would be nice to call bfd_elf_generic_reloc here,
- but we have partial_inplace set. bfd_elf_generic_reloc will
- pass the handling back to bfd_install_relocation which will install
- a section relative addend which is wrong. */
- /* Sanity check the address (offset in section). */
- if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
- return bfd_reloc_outofrange;
- ret = bfd_reloc_ok;
- if (bfd_is_und_section (symbol->section)
- && output_bfd == NULL)
- ret = bfd_reloc_undefined;
- if (bfd_is_com_section (symbol->section)
- || output_bfd != NULL)
- relocation = 0;
- else
- relocation = symbol->value;
- /* Only do this for a final link. */
- if (output_bfd == NULL)
- {
- relocation += symbol->section->output_section->vma;
- relocation += symbol->section->output_offset;
- }
- relocation += reloc_entry->addend;
- inplace_address = (bfd_byte *) data + reloc_entry->address;
- #define DOIT(x) \
- x = ( (x & ~reloc_entry->howto->dst_mask) | \
- (((x & reloc_entry->howto->src_mask) + relocation) & \
- reloc_entry->howto->dst_mask))
- switch (reloc_entry->howto->size)
- {
- case 1:
- {
- short x = bfd_get_16 (input_bfd, inplace_address);
- DOIT (x);
- bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
- }
- break;
- case 2:
- {
- unsigned long x = bfd_get_32 (input_bfd, inplace_address);
- DOIT (x);
- bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
- }
- break;
- default:
- BFD_ASSERT (0);
- }
- if (output_bfd != NULL)
- reloc_entry->address += input_section->output_offset;
- return ret;
- }
- /* Handle the R_M32R_SDA16 reloc.
- This reloc is used to compute the address of objects in the small data area
- and to perform loads and stores from that area.
- The lower 16 bits are sign extended and added to the register specified
- in the instruction, which is assumed to point to _SDA_BASE_. */
- static bfd_reloc_status_type
- m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *reloc_entry,
- asymbol *symbol,
- void * data ATTRIBUTE_UNUSED,
- asection *input_section,
- bfd *output_bfd,
- char **error_message ATTRIBUTE_UNUSED)
- {
- /* This part is from bfd_elf_generic_reloc. */
- if (output_bfd != NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && (! reloc_entry->howto->partial_inplace
- || reloc_entry->addend == 0))
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- if (output_bfd != NULL)
- /* FIXME: See bfd_perform_relocation. Is this right? */
- return bfd_reloc_continue;
- /* FIXME: not sure what to do here yet. But then again, the linker
- may never call us. */
- abort ();
- }
- /* Handle the R_M32R_HI16_[SU]LO relocs.
- HI16_SLO is for the add3 and load/store with displacement instructions.
- HI16_ULO is for the or3 instruction.
- For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
- the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
- we must add one to the high 16 bytes (which will get subtracted off when
- the low 16 bits are added).
- These relocs have to be done in combination with an R_M32R_LO16 reloc
- because there is a carry from the LO16 to the HI16. Here we just save
- the information we need; we do the actual relocation when we see the LO16.
- This code is copied from the elf32-mips.c. We also support an arbitrary
- number of HI16 relocs to be associated with a single LO16 reloc. The
- assembler sorts the relocs to ensure each HI16 immediately precedes its
- LO16. However if there are multiple copies, the assembler may not find
- the real LO16 so it picks the first one it finds. */
- struct m32r_hi16
- {
- struct m32r_hi16 *next;
- bfd_byte *addr;
- bfd_vma addend;
- };
- /* FIXME: This should not be a static variable. */
- static struct m32r_hi16 *m32r_hi16_list;
- static bfd_reloc_status_type
- m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *reloc_entry,
- asymbol *symbol,
- void * data,
- asection *input_section,
- bfd *output_bfd,
- char **error_message ATTRIBUTE_UNUSED)
- {
- bfd_reloc_status_type ret;
- bfd_vma relocation;
- struct m32r_hi16 *n;
- /* This part is from bfd_elf_generic_reloc.
- If we're relocating, and this an external symbol, we don't want
- to change anything. */
- if (output_bfd != NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- /* Sanity check the address (offset in section). */
- if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
- return bfd_reloc_outofrange;
- ret = bfd_reloc_ok;
- if (bfd_is_und_section (symbol->section)
- && output_bfd == NULL)
- ret = bfd_reloc_undefined;
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = symbol->value;
- relocation += symbol->section->output_section->vma;
- relocation += symbol->section->output_offset;
- relocation += reloc_entry->addend;
- /* Save the information, and let LO16 do the actual relocation. */
- n = bfd_malloc ((bfd_size_type) sizeof *n);
- if (n == NULL)
- return bfd_reloc_outofrange;
- n->addr = (bfd_byte *) data + reloc_entry->address;
- n->addend = relocation;
- n->next = m32r_hi16_list;
- m32r_hi16_list = n;
- if (output_bfd != NULL)
- reloc_entry->address += input_section->output_offset;
- return ret;
- }
- /* Handle an M32R ELF HI16 reloc. */
- static void
- m32r_elf_relocate_hi16 (bfd *input_bfd,
- int type,
- Elf_Internal_Rela *relhi,
- Elf_Internal_Rela *rello,
- bfd_byte *contents,
- bfd_vma addend)
- {
- unsigned long insn;
- bfd_vma addlo;
- insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
- addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
- if (type == R_M32R_HI16_SLO)
- addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
- else
- addlo &= 0xffff;
- addend += ((insn & 0xffff) << 16) + addlo;
- /* Reaccount for sign extension of low part. */
- if (type == R_M32R_HI16_SLO
- && (addend & 0x8000) != 0)
- addend += 0x10000;
- bfd_put_32 (input_bfd,
- (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
- contents + relhi->r_offset);
- }
- /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit
- inplace relocation; this function exists in order to do the
- R_M32R_HI16_[SU]LO relocation described above. */
- static bfd_reloc_status_type
- m32r_elf_lo16_reloc (bfd *input_bfd,
- arelent *reloc_entry,
- asymbol *symbol,
- void * data,
- asection *input_section,
- bfd *output_bfd,
- char **error_message)
- {
- /* This part is from bfd_elf_generic_reloc.
- If we're relocating, and this an external symbol, we don't want
- to change anything. */
- if (output_bfd != NULL
- && (symbol->flags & BSF_SECTION_SYM) == 0
- && reloc_entry->addend == 0)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
- if (m32r_hi16_list != NULL)
- {
- struct m32r_hi16 *l;
- l = m32r_hi16_list;
- while (l != NULL)
- {
- unsigned long insn;
- unsigned long val;
- unsigned long vallo;
- struct m32r_hi16 *next;
- /* Do the HI16 relocation. Note that we actually don't need
- to know anything about the LO16 itself, except where to
- find the low 16 bits of the addend needed by the LO16. */
- insn = bfd_get_32 (input_bfd, l->addr);
- vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
- & 0xffff) ^ 0x8000) - 0x8000;
- val = ((insn & 0xffff) << 16) + vallo;
- val += l->addend;
- /* Reaccount for sign extension of low part. */
- if ((val & 0x8000) != 0)
- val += 0x10000;
- insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
- bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
- next = l->next;
- free (l);
- l = next;
- }
- m32r_hi16_list = NULL;
- }
- /* Now do the LO16 reloc in the usual way.
- ??? It would be nice to call bfd_elf_generic_reloc here,
- but we have partial_inplace set. bfd_elf_generic_reloc will
- pass the handling back to bfd_install_relocation which will install
- a section relative addend which is wrong. */
- return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
- }
- static reloc_howto_type m32r_elf_howto_table[] =
- {
- /* This reloc does nothing. */
- HOWTO (R_M32R_NONE, /* type */
- 0, /* rightshift */
- 3, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_NONE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* A 16 bit absolute relocation. */
- HOWTO (R_M32R_16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- m32r_elf_generic_reloc,/* special_function */
- "R_M32R_16", /* name */
- true, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 32 bit absolute relocation. */
- HOWTO (R_M32R_32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- m32r_elf_generic_reloc,/* special_function */
- "R_M32R_32", /* name */
- true, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 24 bit address. */
- HOWTO (R_M32R_24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 24, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- m32r_elf_generic_reloc,/* special_function */
- "R_M32R_24", /* name */
- true, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* An PC Relative 10-bit relocation, shifted by 2.
- This reloc is complicated because relocations are relative to pc & -4.
- i.e. branches in the right insn slot use the address of the left insn
- slot for pc. */
- /* ??? It's not clear whether this should have partial_inplace set or not.
- Branch relaxing in the assembler can store the addend in the insn,
- and if bfd_install_relocation gets called the addend may get added
- again. */
- HOWTO (R_M32R_10_PCREL, /* type */
- 2, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 10, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- m32r_elf_10_pcrel_reloc, /* special_function */
- "R_M32R_10_PCREL", /* name */
- false, /* partial_inplace */
- 0xff, /* src_mask */
- 0xff, /* dst_mask */
- true), /* pcrel_offset */
- /* A relative 18 bit relocation, right shifted by 2. */
- HOWTO (R_M32R_18_PCREL, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_18_PCREL", /* name */
- false, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- true), /* pcrel_offset */
- /* A relative 26 bit relocation, right shifted by 2. */
- /* ??? It's not clear whether this should have partial_inplace set or not.
- Branch relaxing in the assembler can store the addend in the insn,
- and if bfd_install_relocation gets called the addend may get added
- again. */
- HOWTO (R_M32R_26_PCREL, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_26_PCREL", /* name */
- false, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- true), /* pcrel_offset */
- /* High 16 bits of address when lower 16 is or'd in. */
- HOWTO (R_M32R_HI16_ULO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- m32r_elf_hi16_reloc, /* special_function */
- "R_M32R_HI16_ULO", /* name */
- true, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* High 16 bits of address when lower 16 is added in. */
- HOWTO (R_M32R_HI16_SLO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- m32r_elf_hi16_reloc, /* special_function */
- "R_M32R_HI16_SLO", /* name */
- true, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Lower 16 bits of address. */
- HOWTO (R_M32R_LO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- m32r_elf_lo16_reloc, /* special_function */
- "R_M32R_LO16", /* name */
- true, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Small data area 16 bits offset. */
- HOWTO (R_M32R_SDA16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- m32r_elf_sda16_reloc, /* special_function */
- "R_M32R_SDA16", /* name */
- true, /* partial_inplace */ /* FIXME: correct? */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* GNU extension to record C++ vtable hierarchy. */
- HOWTO (R_M32R_GNU_VTINHERIT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_M32R_GNU_VTINHERIT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* GNU extension to record C++ vtable member usage. */
- HOWTO (R_M32R_GNU_VTENTRY, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- _bfd_elf_rel_vtable_reloc_fn, /* special_function */
- "R_M32R_GNU_VTENTRY", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- EMPTY_HOWTO (13),
- EMPTY_HOWTO (14),
- EMPTY_HOWTO (15),
- EMPTY_HOWTO (16),
- EMPTY_HOWTO (17),
- EMPTY_HOWTO (18),
- EMPTY_HOWTO (19),
- EMPTY_HOWTO (20),
- EMPTY_HOWTO (21),
- EMPTY_HOWTO (22),
- EMPTY_HOWTO (23),
- EMPTY_HOWTO (24),
- EMPTY_HOWTO (25),
- EMPTY_HOWTO (26),
- EMPTY_HOWTO (27),
- EMPTY_HOWTO (28),
- EMPTY_HOWTO (29),
- EMPTY_HOWTO (30),
- EMPTY_HOWTO (31),
- EMPTY_HOWTO (32),
- /* A 16 bit absolute relocation. */
- HOWTO (R_M32R_16_RELA, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_16_RELA", /* name */
- false, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 32 bit absolute relocation. */
- HOWTO (R_M32R_32_RELA, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc,/* special_function */
- "R_M32R_32_RELA", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 24 bit address. */
- HOWTO (R_M32R_24_RELA, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 24, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- bfd_elf_generic_reloc,/* special_function */
- "R_M32R_24_RELA", /* name */
- false, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_M32R_10_PCREL_RELA, /* type */
- 2, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 10, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- m32r_elf_10_pcrel_reloc, /* special_function */
- "R_M32R_10_PCREL_RELA",/* name */
- false, /* partial_inplace */
- 0xff, /* src_mask */
- 0xff, /* dst_mask */
- true), /* pcrel_offset */
- /* A relative 18 bit relocation, right shifted by 2. */
- HOWTO (R_M32R_18_PCREL_RELA, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_18_PCREL_RELA",/* name */
- false, /* partial_inplace */
- 0xffff, /* src_mask */
- 0xffff, /* dst_mask */
- true), /* pcrel_offset */
- /* A relative 26 bit relocation, right shifted by 2. */
- HOWTO (R_M32R_26_PCREL_RELA, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_26_PCREL_RELA",/* name */
- false, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- true), /* pcrel_offset */
- /* High 16 bits of address when lower 16 is or'd in. */
- HOWTO (R_M32R_HI16_ULO_RELA, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_HI16_ULO_RELA",/* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* High 16 bits of address when lower 16 is added in. */
- HOWTO (R_M32R_HI16_SLO_RELA, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_HI16_SLO_RELA",/* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Lower 16 bits of address. */
- HOWTO (R_M32R_LO16_RELA, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_LO16_RELA", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Small data area 16 bits offset. */
- HOWTO (R_M32R_SDA16_RELA, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_SDA16_RELA", /* name */
- true, /* partial_inplace */ /* FIXME: correct? */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* GNU extension to record C++ vtable hierarchy. */
- HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_M32R_RELA_GNU_VTINHERIT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* GNU extension to record C++ vtable member usage. */
- HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- _bfd_elf_rel_vtable_reloc_fn, /* special_function */
- "R_M32R_RELA_GNU_VTENTRY", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* A 32 bit PC relative relocation. */
- HOWTO (R_M32R_REL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc,/* special_function */
- "R_M32R_REL32", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
- EMPTY_HOWTO (46),
- EMPTY_HOWTO (47),
- /* Like R_M32R_24, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_M32R_GOT24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 24, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOT24", /* name */
- false, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Like R_M32R_PCREL, but referring to the procedure linkage table
- entry for the symbol. */
- HOWTO (R_M32R_26_PLTREL, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 24, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_26_PLTREL", /* name */
- false, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- true), /* pcrel_offset */
- /* This is used only by the dynamic linker. The symbol should exist
- both in the object being run and in some shared library. The
- dynamic linker copies the data addressed by the symbol from the
- shared library into the object, because the object being
- run has to have the data at some particular address. */
- HOWTO (R_M32R_COPY, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_COPY", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Like R_M32R_24, but used when setting global offset table
- entries. */
- HOWTO (R_M32R_GLOB_DAT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GLOB_DAT", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Marks a procedure linkage table entry for a symbol. */
- HOWTO (R_M32R_JMP_SLOT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_JMP_SLOT", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Used only by the dynamic linker. When the object is run, this
- longword is set to the load address of the object, plus the
- addend. */
- HOWTO (R_M32R_RELATIVE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_RELATIVE", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_M32R_GOTOFF, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 24, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTOFF", /* name */
- false, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* An PC Relative 24-bit relocation used when setting PIC offset
- table register. */
- HOWTO (R_M32R_GOTPC24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 24, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTPC24", /* name */
- false, /* partial_inplace */
- 0xffffff, /* src_mask */
- 0xffffff, /* dst_mask */
- true), /* pcrel_offset */
- /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_M32R_GOT16_HI_ULO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOT16_HI_ULO", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_M32R_GOT16_HI_SLO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOT16_HI_SLO", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* Like R_M32R_LO16, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_M32R_GOT16_LO, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOT16_LO", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* An PC Relative relocation used when setting PIC offset table register.
- Like R_M32R_HI16_ULO, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_M32R_GOTPC_HI_ULO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTPC_HI_ULO", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- true), /* pcrel_offset */
- /* An PC Relative relocation used when setting PIC offset table register.
- Like R_M32R_HI16_SLO, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_M32R_GOTPC_HI_SLO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTPC_HI_SLO", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- true), /* pcrel_offset */
- /* An PC Relative relocation used when setting PIC offset table register.
- Like R_M32R_LO16, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_M32R_GOTPC_LO, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTPC_LO", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTOFF_HI_ULO",/* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTOFF_HI_SLO",/* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_M32R_GOTOFF_LO, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_M32R_GOTOFF_LO", /* name */
- false, /* partial_inplace */
- 0x0000ffff, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- };
- /* Map BFD reloc types to M32R ELF reloc types. */
- struct m32r_reloc_map
- {
- bfd_reloc_code_real_type bfd_reloc_val;
- unsigned char elf_reloc_val;
- };
- #ifdef USE_M32R_OLD_RELOC
- static const struct m32r_reloc_map m32r_reloc_map_old[] =
- {
- { BFD_RELOC_NONE, R_M32R_NONE },
- { BFD_RELOC_16, R_M32R_16 },
- { BFD_RELOC_32, R_M32R_32 },
- { BFD_RELOC_M32R_24, R_M32R_24 },
- { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
- { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
- { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
- { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
- { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
- { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
- { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
- { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
- { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
- };
- #else
- static const struct m32r_reloc_map m32r_reloc_map[] =
- {
- { BFD_RELOC_NONE, R_M32R_NONE },
- { BFD_RELOC_16, R_M32R_16_RELA },
- { BFD_RELOC_32, R_M32R_32_RELA },
- { BFD_RELOC_M32R_24, R_M32R_24_RELA },
- { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
- { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
- { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
- { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
- { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
- { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
- { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
- { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
- { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
- { BFD_RELOC_32_PCREL, R_M32R_REL32 },
- { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
- { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
- { BFD_RELOC_M32R_COPY, R_M32R_COPY },
- { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
- { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
- { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
- { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
- { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
- { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
- { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
- { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
- { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
- { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
- { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
- { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
- { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
- { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
- };
- #endif
- static reloc_howto_type *
- bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
- {
- unsigned int i;
- #ifdef USE_M32R_OLD_RELOC
- for (i = 0;
- i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
- i++)
- if (m32r_reloc_map_old[i].bfd_reloc_val == code)
- return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
- #else /* ! USE_M32R_OLD_RELOC */
- for (i = 0;
- i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
- i++)
- if (m32r_reloc_map[i].bfd_reloc_val == code)
- return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
- #endif
- return NULL;
- }
- static reloc_howto_type *
- bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
- {
- unsigned int i;
- for (i = 0;
- i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]);
- i++)
- if (m32r_elf_howto_table[i].name != NULL
- && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0)
- return &m32r_elf_howto_table[i];
- return NULL;
- }
- /* Set the howto pointer for an M32R ELF reloc. */
- static bool
- m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *cache_ptr,
- Elf_Internal_Rela *dst)
- {
- unsigned int r_type;
- r_type = ELF32_R_TYPE (dst->r_info);
- if (r_type > (unsigned int) R_M32R_GNU_VTENTRY)
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- abfd, r_type);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- cache_ptr->howto = &m32r_elf_howto_table[r_type];
- return true;
- }
- static bool
- m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *cache_ptr,
- Elf_Internal_Rela *dst)
- {
- unsigned int r_type = ELF32_R_TYPE (dst->r_info);
- if (r_type == (unsigned int) R_M32R_NONE
- || ((r_type > (unsigned int) R_M32R_GNU_VTENTRY)
- && (r_type < (unsigned int) R_M32R_max)))
- {
- cache_ptr->howto = &m32r_elf_howto_table[r_type];
- return true;
- }
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- /* Given a BFD section, try to locate the corresponding ELF section
- index. */
- static bool
- _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
- asection *sec,
- int *retval)
- {
- if (strcmp (bfd_section_name (sec), ".scommon") == 0)
- {
- *retval = SHN_M32R_SCOMMON;
- return true;
- }
- return false;
- }
- /* M32R ELF uses two common sections. One is the usual one, and the other
- is for small objects. All the small objects are kept together, and then
- referenced via one register, which yields faster assembler code. It is
- up to the compiler to emit an instruction to load the register with
- _SDA_BASE. This is what we use for the small common section. This
- approach is copied from elf32-mips.c. */
- static asection m32r_elf_scom_section;
- static const asymbol m32r_elf_scom_symbol =
- GLOBAL_SYM_INIT (".scommon", &m32r_elf_scom_section);
- static asection m32r_elf_scom_section =
- BFD_FAKE_SECTION (m32r_elf_scom_section, &m32r_elf_scom_symbol,
- ".scommon", 0, SEC_IS_COMMON | SEC_SMALL_DATA);
- /* Handle the special M32R section numbers that a symbol may use. */
- static void
- _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
- {
- elf_symbol_type *elfsym = (elf_symbol_type *) asym;
- switch (elfsym->internal_elf_sym.st_shndx)
- {
- case SHN_M32R_SCOMMON:
- asym->section = &m32r_elf_scom_section;
- asym->value = elfsym->internal_elf_sym.st_size;
- break;
- }
- }
- /* Hook called by the linker routine which adds symbols from an object
- file. We must handle the special M32R section numbers here.
- We also keep watching for whether we need to create the sdata special
- linker sections. */
- static bool
- m32r_elf_add_symbol_hook (bfd *abfd,
- struct bfd_link_info *info,
- Elf_Internal_Sym *sym,
- const char **namep,
- flagword *flagsp ATTRIBUTE_UNUSED,
- asection **secp,
- bfd_vma *valp)
- {
- if (! bfd_link_relocatable (info)
- && (*namep)[0] == '_' && (*namep)[1] == 'S'
- && strcmp (*namep, "_SDA_BASE_") == 0
- && is_elf_hash_table (info->hash))
- {
- /* This is simpler than using _bfd_elf_create_linker_section
- (our needs are simpler than ppc's needs). Also
- _bfd_elf_create_linker_section currently has a bug where if a .sdata
- section already exists a new one is created that follows it which
- screws of _SDA_BASE_ address calcs because output_offset != 0. */
- struct elf_link_hash_entry *h;
- struct bfd_link_hash_entry *bh;
- asection *s = bfd_get_section_by_name (abfd, ".sdata");
- /* The following code was cobbled from elf32-ppc.c and elflink.c. */
- if (s == NULL)
- {
- flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY | SEC_LINKER_CREATED);
- s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
- flags);
- if (s == NULL)
- return false;
- if (!bfd_set_section_alignment (s, 2))
- return false;
- }
- bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
- false, false, false);
- if ((bh == NULL || bh->type == bfd_link_hash_undefined)
- && !(_bfd_generic_link_add_one_symbol (info,
- abfd,
- "_SDA_BASE_",
- BSF_GLOBAL,
- s,
- (bfd_vma) 32768,
- NULL,
- false,
- get_elf_backend_data (abfd)->collect,
- &bh)))
- return false;
- h = (struct elf_link_hash_entry *) bh;
- h->type = STT_OBJECT;
- }
- switch (sym->st_shndx)
- {
- case SHN_M32R_SCOMMON:
- *secp = bfd_make_section_old_way (abfd, ".scommon");
- (*secp)->flags |= SEC_IS_COMMON | SEC_SMALL_DATA;
- *valp = sym->st_size;
- break;
- }
- return true;
- }
- /* We have to figure out the SDA_BASE value, so that we can adjust the
- symbol value correctly. We look up the symbol _SDA_BASE_ in the output
- BFD. If we can't find it, we're stuck. We cache it in the ELF
- target data. We don't need to adjust the symbol value for an
- external symbol if we are producing relocatable output. */
- static bfd_reloc_status_type
- m32r_elf_final_sda_base (bfd *output_bfd,
- struct bfd_link_info *info,
- const char **error_message,
- bfd_vma *psb)
- {
- if (elf_gp (output_bfd) == 0)
- {
- struct bfd_link_hash_entry *h;
- h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", false, false, true);
- if (h != NULL && h->type == bfd_link_hash_defined)
- elf_gp (output_bfd) = (h->u.def.value
- + h->u.def.section->output_section->vma
- + h->u.def.section->output_offset);
- else
- {
- /* Only get the error once. */
- *psb = elf_gp (output_bfd) = 4;
- *error_message =
- (const char *) _("SDA relocation when _SDA_BASE_ not defined");
- return bfd_reloc_dangerous;
- }
- }
- *psb = elf_gp (output_bfd);
- return bfd_reloc_ok;
- }
- /* Return size of a PLT entry. */
- #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
- /* The m32r linker needs to keep track of the number of relocs that it
- decides to copy in check_relocs for each symbol. This is so that
- it can discard PC relative relocs if it doesn't need them when
- linking with -Bsymbolic. We store the information in a field
- extending the regular ELF linker hash table. */
- /* This structure keeps track of the number of PC relative relocs we
- have copied for a given symbol. */
- struct elf_m32r_pcrel_relocs_copied
- {
- /* Next section. */
- struct elf_m32r_pcrel_relocs_copied *next;
- /* A section in dynobj. */
- asection *section;
- /* Number of relocs copied in this section. */
- bfd_size_type count;
- };
- /* Traverse an m32r ELF linker hash table. */
- #define m32r_elf_link_hash_traverse(table, func, info) \
- (elf_link_hash_traverse \
- (&(table)->root, \
- (bool (*) (struct elf_link_hash_entry *, void *)) (func), \
- (info)))
- /* Get the m32r ELF linker hash table from a link_info structure. */
- #define m32r_elf_hash_table(p) \
- ((is_elf_hash_table ((p)->hash) \
- && elf_hash_table_id (elf_hash_table (p)) == M32R_ELF_DATA) \
- ? (struct elf_link_hash_table *) (p)->hash : NULL)
- /* Create an m32r ELF linker hash table. */
- static struct bfd_link_hash_table *
- m32r_elf_link_hash_table_create (bfd *abfd)
- {
- struct elf_link_hash_table *ret;
- size_t amt = sizeof (struct elf_link_hash_table);
- ret = bfd_zmalloc (amt);
- if (ret == NULL)
- return NULL;
- if (!_bfd_elf_link_hash_table_init (ret, abfd,
- _bfd_elf_link_hash_newfunc,
- sizeof (struct elf_link_hash_entry),
- M32R_ELF_DATA))
- {
- free (ret);
- return NULL;
- }
- return &ret->root;
- }
- /* Create dynamic sections when linking against a dynamic object. */
- static bool
- m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
- {
- struct elf_link_hash_table *htab;
- flagword flags, pltflags;
- asection *s;
- const struct elf_backend_data *bed = get_elf_backend_data (abfd);
- int ptralign = 2; /* 32bit */
- htab = m32r_elf_hash_table (info);
- if (htab == NULL)
- return false;
- /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
- .rel[a].bss sections. */
- flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
- pltflags = flags;
- pltflags |= SEC_CODE;
- if (bed->plt_not_loaded)
- pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
- if (bed->plt_readonly)
- pltflags |= SEC_READONLY;
- s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
- htab->splt = s;
- if (s == NULL
- || !bfd_set_section_alignment (s, bed->plt_alignment))
- return false;
- if (bed->want_plt_sym)
- {
- /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
- .plt section. */
- struct bfd_link_hash_entry *bh = NULL;
- struct elf_link_hash_entry *h;
- if (! (_bfd_generic_link_add_one_symbol
- (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
- (bfd_vma) 0, NULL, false,
- get_elf_backend_data (abfd)->collect, &bh)))
- return false;
- h = (struct elf_link_hash_entry *) bh;
- h->def_regular = 1;
- h->type = STT_OBJECT;
- htab->hplt = h;
- if (bfd_link_pic (info)
- && ! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- s = bfd_make_section_anyway_with_flags (abfd,
- bed->default_use_rela_p
- ? ".rela.plt" : ".rel.plt",
- flags | SEC_READONLY);
- htab->srelplt = s;
- if (s == NULL
- || !bfd_set_section_alignment (s, ptralign))
- return false;
- if (htab->sgot == NULL
- && !_bfd_elf_create_got_section (abfd, info))
- return false;
- if (bed->want_dynbss)
- {
- /* The .dynbss section is a place to put symbols which are defined
- by dynamic objects, are referenced by regular objects, and are
- not functions. We must allocate space for them in the process
- image and use a R_*_COPY reloc to tell the dynamic linker to
- initialize them at run time. The linker script puts the .dynbss
- section into the .bss section of the final image. */
- s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
- SEC_ALLOC | SEC_LINKER_CREATED);
- htab->sdynbss = s;
- if (s == NULL)
- return false;
- /* The .rel[a].bss section holds copy relocs. This section is not
- normally needed. We need to create it here, though, so that the
- linker will map it to an output section. We can't just create it
- only if we need it, because we will not know whether we need it
- until we have seen all the input files, and the first time the
- main linker code calls BFD after examining all the input files
- (size_dynamic_sections) the input sections have already been
- mapped to the output sections. If the section turns out not to
- be needed, we can discard it later. We will never need this
- section when generating a shared object, since they do not use
- copy relocs. */
- if (! bfd_link_pic (info))
- {
- s = bfd_make_section_anyway_with_flags (abfd,
- (bed->default_use_rela_p
- ? ".rela.bss" : ".rel.bss"),
- flags | SEC_READONLY);
- htab->srelbss = s;
- if (s == NULL
- || !bfd_set_section_alignment (s, ptralign))
- return false;
- }
- }
- return true;
- }
- /* 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
- m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
- {
- struct elf_link_hash_table *htab;
- bfd *dynobj;
- asection *s;
- #ifdef DEBUG_PIC
- printf ("m32r_elf_adjust_dynamic_symbol()\n");
- #endif
- dynobj = elf_hash_table (info)->dynobj;
- /* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && (h->needs_plt
- || h->is_weakalias
- || (h->def_dynamic
- && h->ref_regular
- && !h->def_regular)));
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later,
- when we know the address of the .got section. */
- if (h->type == STT_FUNC
- || h->needs_plt)
- {
- if (! bfd_link_pic (info)
- && !h->def_dynamic
- && !h->ref_dynamic
- && h->root.type != bfd_link_hash_undefweak
- && h->root.type != bfd_link_hash_undefined)
- {
- /* This case can occur if we saw a PLT reloc in an input
- file, but the symbol was never referred to by a dynamic
- object. In such a case, we don't actually need to build
- a procedure linkage table, and we can just do a PCREL
- reloc instead. */
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- return true;
- }
- else
- h->plt.offset = (bfd_vma) -1;
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->is_weakalias)
- {
- struct elf_link_hash_entry *def = weakdef (h);
- BFD_ASSERT (def->root.type == bfd_link_hash_defined);
- h->root.u.def.section = def->root.u.def.section;
- h->root.u.def.value = def->root.u.def.value;
- return true;
- }
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. */
- /* If we are creating a shared library, we must presume that the
- only references to the symbol are via the global offset table.
- For such cases we need not do anything here; the relocations will
- be handled correctly by relocate_section. */
- if (bfd_link_pic (info))
- return true;
- /* If there are no references to this symbol that do not use the
- GOT, we don't need to generate a copy reloc. */
- if (!h->non_got_ref)
- return true;
- /* If -z nocopyreloc was given, we won't generate them either. */
- if (0 && info->nocopyreloc)
- {
- h->non_got_ref = 0;
- 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 (0 && !_bfd_elf_readonly_dynrelocs (h))
- {
- h->non_got_ref = 0;
- return true;
- }
- /* We must allocate the symbol in our .dynbss section, which will
- become part of the .bss section of the executable. There will be
- an entry for this symbol in the .dynsym section. The dynamic
- object will contain position independent code, so all references
- from the dynamic object to this symbol will go through the global
- offset table. The dynamic linker will use the .dynsym entry to
- determine the address it must put in the global offset table, so
- both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
- htab = m32r_elf_hash_table (info);
- if (htab == NULL)
- return false;
- s = htab->sdynbss;
- BFD_ASSERT (s != NULL);
- /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
- to copy the initial value out of the dynamic object and into the
- runtime process image. We need to remember the offset into the
- .rela.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
- {
- asection *srel;
- srel = htab->srelbss;
- BFD_ASSERT (srel != NULL);
- srel->size += sizeof (Elf32_External_Rela);
- h->needs_copy = 1;
- }
- return _bfd_elf_adjust_dynamic_copy (info, h, s);
- }
- /* Allocate space in .plt, .got and associated reloc sections for
- dynamic relocs. */
- static bool
- allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
- {
- struct bfd_link_info *info;
- struct elf_link_hash_table *htab;
- struct elf_dyn_relocs *p;
- if (h->root.type == bfd_link_hash_indirect)
- return true;
- info = (struct bfd_link_info *) inf;
- htab = m32r_elf_hash_table (info);
- if (htab == NULL)
- return false;
- if (htab->dynamic_sections_created
- && h->plt.refcount > 0)
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
- {
- asection *s = htab->splt;
- /* If this is the first .plt entry, make room for the special
- first entry. */
- if (s->size == 0)
- s->size += PLT_ENTRY_SIZE;
- h->plt.offset = s->size;
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! bfd_link_pic (info)
- && !h->def_regular)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = h->plt.offset;
- }
- /* Make room for this entry. */
- s->size += PLT_ENTRY_SIZE;
- /* We also need to make an entry in the .got.plt section, which
- will be placed in the .got section by the linker script. */
- htab->sgotplt->size += 4;
- /* We also need to make an entry in the .rel.plt section. */
- htab->srelplt->size += sizeof (Elf32_External_Rela);
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- if (h->got.refcount > 0)
- {
- asection *s;
- bool dyn;
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- s = htab->sgot;
- h->got.offset = s->size;
- s->size += 4;
- dyn = htab->dynamic_sections_created;
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
- htab->srelgot->size += sizeof (Elf32_External_Rela);
- }
- else
- h->got.offset = (bfd_vma) -1;
- if (h->dyn_relocs == NULL)
- return true;
- /* In the shared -Bsymbolic case, discard space allocated for
- dynamic pc-relative relocs against symbols which turn out to be
- defined in regular objects. For the normal shared case, discard
- space for pc-relative relocs that have become local due to symbol
- visibility changes. */
- if (bfd_link_pic (info))
- {
- if (h->def_regular
- && (h->forced_local
- || info->symbolic))
- {
- struct elf_dyn_relocs **pp;
- for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
- {
- p->count -= p->pc_count;
- p->pc_count = 0;
- if (p->count == 0)
- *pp = p->next;
- else
- pp = &p->next;
- }
- }
- /* Also discard relocs on undefined weak syms with non-default
- visibility. */
- if (h->dyn_relocs != NULL
- && h->root.type == bfd_link_hash_undefweak)
- {
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- h->dyn_relocs = NULL;
- /* Make sure undefined weak symbols are output as a dynamic
- symbol in PIEs. */
- else if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- }
- }
- else
- {
- /* For the non-shared case, discard space for relocs against
- symbols which turn out to need copy relocs or are not
- dynamic. */
- if (!h->non_got_ref
- && ((h->def_dynamic
- && !h->def_regular)
- || (htab->dynamic_sections_created
- && (h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_undefined))))
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- /* If that succeeded, we know we'll be keeping all the
- relocs. */
- if (h->dynindx != -1)
- goto keep;
- }
- h->dyn_relocs = NULL;
- keep: ;
- }
- /* Finally, allocate space. */
- for (p = h->dyn_relocs; p != NULL; p = p->next)
- {
- asection *sreloc = elf_section_data (p->sec)->sreloc;
- sreloc->size += p->count * sizeof (Elf32_External_Rela);
- }
- return true;
- }
- /* Set the sizes of the dynamic sections. */
- static bool
- m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
- {
- struct elf_link_hash_table *htab;
- bfd *dynobj;
- asection *s;
- bool relocs;
- bfd *ibfd;
- #ifdef DEBUG_PIC
- printf ("m32r_elf_size_dynamic_sections()\n");
- #endif
- htab = m32r_elf_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->dynobj;
- BFD_ASSERT (dynobj != NULL);
- if (htab->dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (bfd_link_executable (info) && !info->nointerp)
- {
- s = bfd_get_linker_section (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- }
- /* Set up .got offsets for local syms, and space for local dynamic
- relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
- {
- bfd_signed_vma *local_got;
- bfd_signed_vma *end_local_got;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
- asection *srel;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
- continue;
- for (s = ibfd->sections; s != NULL; s = s->next)
- {
- struct elf_dyn_relocs *p;
- for (p = ((struct elf_dyn_relocs *)
- elf_section_data (s)->local_dynrel);
- p != NULL;
- p = p->next)
- {
- if (! bfd_is_abs_section (p->sec)
- && bfd_is_abs_section (p->sec->output_section))
- {
- /* Input section has been discarded, either because
- it is a copy of a linkonce section or due to
- linker script /DISCARD/, so we'll be discarding
- the relocs too. */
- }
- else if (p->count != 0)
- {
- srel = elf_section_data (p->sec)->sreloc;
- srel->size += p->count * sizeof (Elf32_External_Rela);
- if ((p->sec->output_section->flags & SEC_READONLY) != 0)
- info->flags |= DF_TEXTREL;
- }
- }
- }
- local_got = elf_local_got_refcounts (ibfd);
- if (!local_got)
- continue;
- symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
- locsymcount = symtab_hdr->sh_info;
- end_local_got = local_got + locsymcount;
- s = htab->sgot;
- srel = htab->srelgot;
- for (; local_got < end_local_got; ++local_got)
- {
- if (*local_got > 0)
- {
- *local_got = s->size;
- s->size += 4;
- if (bfd_link_pic (info))
- srel->size += sizeof (Elf32_External_Rela);
- }
- else
- *local_got = (bfd_vma) -1;
- }
- }
- /* Allocate global sym .plt and .got entries, and space for global
- sym dynamic relocs. */
- elf_link_hash_traverse (htab, allocate_dynrelocs, info);
- /* We now have determined the sizes of the various dynamic sections.
- Allocate memory for them. */
- relocs = false;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
- if (s == htab->splt
- || s == htab->sgot
- || s == htab->sgotplt
- || s == htab->sdynbss)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- }
- else if (startswith (bfd_section_name (s), ".rela"))
- {
- if (s->size != 0 && s != htab->srelplt)
- relocs = true;
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- else
- /* It's not one of our sections, so don't allocate space. */
- continue;
- if (s->size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is 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. */
- s->flags |= SEC_EXCLUDE;
- continue;
- }
- if ((s->flags & SEC_HAS_CONTENTS) == 0)
- continue;
- /* Allocate memory for the section contents. We use bfd_zalloc
- here in case unused entries are not reclaimed before the
- section's contents are written out. This should not happen,
- but this way if it does, we get a R_M32R_NONE reloc instead
- of garbage. */
- s->contents = bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL)
- return false;
- }
- return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
- }
- /* Relocate an M32R/D ELF section.
- There is some attempt to make this function usable for many architectures,
- both for RELA and REL type relocs, if only to serve as a learning tool.
- The RELOCATE_SECTION function is called by the new ELF backend linker
- to handle the relocations for a section.
- The relocs are always passed as Rela structures; if the section
- actually uses Rel structures, the r_addend field will always be
- zero.
- This function is responsible for adjust the section contents as
- necessary, and (if using Rela relocs and generating a
- relocatable output file) adjusting the reloc addend as
- necessary.
- This function does not have to worry about setting the reloc
- address or the reloc symbol index.
- LOCAL_SYMS is a pointer to the swapped in local symbols.
- LOCAL_SECTIONS is an array giving the section in the input file
- corresponding to the st_shndx field of each local symbol.
- The global hash table entry for the global symbols can be found
- via elf_sym_hashes (input_bfd).
- When generating relocatable output, this function must handle
- STB_LOCAL/STT_SECTION symbols specially. The output symbol is
- going to be the section symbol corresponding to the output
- section, which means that the addend must be adjusted
- accordingly. */
- static int
- m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
- 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)
- {
- Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
- Elf_Internal_Rela *rel, *relend;
- /* Assume success. */
- bool ret = true;
- struct elf_link_hash_table *htab = m32r_elf_hash_table (info);
- bfd_vma *local_got_offsets;
- asection *sgot, *splt, *sreloc;
- bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
- if (htab == NULL)
- return false;
- local_got_offsets = elf_local_got_offsets (input_bfd);
- sgot = htab->sgot;
- splt = htab->splt;
- sreloc = NULL;
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- int r_type;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- /* We can't modify r_addend here as elf_link_input_bfd has an assert to
- ensure it's zero (we use REL relocs, not RELA). Therefore this
- should be assigning zero to `addend', but for clarity we use
- `r_addend'. */
- bfd_vma addend = rel->r_addend;
- bfd_vma offset = rel->r_offset;
- bfd_vma relocation;
- Elf_Internal_Sym *sym;
- asection *sec;
- const char *sym_name;
- bfd_reloc_status_type r;
- const char *errmsg = NULL;
- bool use_rel = false;
- h = NULL;
- r_type = ELF32_R_TYPE (rel->r_info);
- if (r_type < 0 || r_type >= (int) R_M32R_max)
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- input_bfd, (int) r_type);
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
- }
- if ( r_type == R_M32R_GNU_VTENTRY
- || r_type == R_M32R_GNU_VTINHERIT
- || r_type == R_M32R_NONE
- || r_type == R_M32R_RELA_GNU_VTENTRY
- || r_type == R_M32R_RELA_GNU_VTINHERIT)
- continue;
- if (r_type <= R_M32R_GNU_VTENTRY)
- use_rel = true;
- howto = m32r_elf_howto_table + r_type;
- r_symndx = ELF32_R_SYM (rel->r_info);
- sym = NULL;
- sec = NULL;
- h = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- /* Local symbol. */
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- sym_name = "<local symbol>";
- if (!use_rel)
- {
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
- addend = rel->r_addend;
- }
- else
- {
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
- }
- else
- {
- /* External symbol. */
- relocation = 0;
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (info->wrap_hash != NULL
- && (input_section->flags & SEC_DEBUGGING) != 0)
- h = ((struct elf_link_hash_entry *)
- unwrap_hash_lookup (info, input_bfd, &h->root));
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- sym_name = h->root.root.string;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- bool dyn;
- sec = h->root.u.def.section;
- dyn = htab->dynamic_sections_created;
- sec = h->root.u.def.section;
- if (r_type == R_M32R_GOTPC24
- || (r_type == R_M32R_GOTPC_HI_ULO
- || r_type == R_M32R_GOTPC_HI_SLO
- || r_type == R_M32R_GOTPC_LO)
- || (r_type == R_M32R_26_PLTREL
- && h->plt.offset != (bfd_vma) -1)
- || ((r_type == R_M32R_GOT24
- || r_type == R_M32R_GOT16_HI_ULO
- || r_type == R_M32R_GOT16_HI_SLO
- || r_type == R_M32R_GOT16_LO)
- && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h)
- && (! bfd_link_pic (info)
- || (! info->symbolic && h->dynindx != -1)
- || !h->def_regular))
- || (bfd_link_pic (info)
- && ((! info->symbolic && h->dynindx != -1)
- || !h->def_regular)
- && (((r_type == R_M32R_16_RELA
- || r_type == R_M32R_32_RELA
- || r_type == R_M32R_24_RELA
- || r_type == R_M32R_HI16_ULO_RELA
- || r_type == R_M32R_HI16_SLO_RELA
- || r_type == R_M32R_LO16_RELA)
- && !h->forced_local)
- || r_type == R_M32R_REL32
- || r_type == R_M32R_10_PCREL_RELA
- || r_type == R_M32R_18_PCREL_RELA
- || r_type == R_M32R_26_PCREL_RELA)
- && ((input_section->flags & SEC_ALLOC) != 0
- /* DWARF will emit R_M32R_16(24,32) relocations
- in its sections against symbols defined
- externally in shared libraries. We can't do
- anything with them here. */
- || ((input_section->flags & SEC_DEBUGGING) != 0
- && h->def_dynamic))))
- {
- /* In these cases, we don't need the relocation
- value. We check specially because in some
- obscure cases sec->output_section will be NULL. */
- }
- else if (sec->output_section != NULL)
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- else if (!bfd_link_relocatable (info)
- && (_bfd_elf_section_offset (output_bfd, info,
- input_section,
- rel->r_offset)
- != (bfd_vma) -1))
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB(%pA+%#" PRIx64 "): unresolvable %s relocation "
- "against symbol `%s'"),
- input_bfd,
- input_section,
- (uint64_t) rel->r_offset,
- howto->name,
- h->root.root.string);
- }
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- ;
- else if (info->unresolved_syms_in_objects == RM_IGNORE
- && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- ;
- else if (!bfd_link_relocatable (info))
- info->callbacks->undefined_symbol
- (info, h->root.root.string, input_bfd, input_section, offset,
- (info->unresolved_syms_in_objects == RM_DIAGNOSE
- && !info->warn_unresolved_syms)
- || ELF_ST_VISIBILITY (h->other));
- }
- if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend, howto, 0, contents);
- if (bfd_link_relocatable (info) && !use_rel)
- {
- /* This is a relocatable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- rel->r_addend += sec->output_offset;
- continue;
- }
- if (bfd_link_relocatable (info) && use_rel)
- {
- /* This is a relocatable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION)
- continue;
- addend += sec->output_offset;
- /* If partial_inplace, we need to store any additional addend
- back in the section. */
- if (! howto->partial_inplace)
- continue;
- /* ??? Here is a nice place to call a special_function
- like handler. */
- if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
- r = _bfd_relocate_contents (howto, input_bfd,
- addend, contents + offset);
- else
- {
- Elf_Internal_Rela *lorel;
- /* We allow an arbitrary number of HI16 relocs before the
- LO16 reloc. This permits gcc to emit the HI and LO relocs
- itself. */
- for (lorel = rel + 1;
- (lorel < relend
- && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
- || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
- lorel++)
- continue;
- if (lorel < relend
- && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
- {
- m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
- contents, addend);
- r = bfd_reloc_ok;
- }
- else
- r = _bfd_relocate_contents (howto, input_bfd,
- addend, contents + offset);
- }
- }
- else
- {
- /* Sanity check the address. */
- if (offset > high_address)
- {
- r = bfd_reloc_outofrange;
- goto check_reloc;
- }
- switch ((int) r_type)
- {
- case R_M32R_GOTOFF:
- /* Relocation is relative to the start of the global offset
- table (for ld24 rx, #uimm24). eg access at label+addend
- ld24 rx. #label@GOTOFF + addend
- sub rx, r12. */
- BFD_ASSERT (sgot != NULL);
- relocation = -(relocation - sgot->output_section->vma);
- rel->r_addend = -rel->r_addend;
- break;
- case R_M32R_GOTOFF_HI_ULO:
- case R_M32R_GOTOFF_HI_SLO:
- case R_M32R_GOTOFF_LO:
- BFD_ASSERT (sgot != NULL);
- relocation -= sgot->output_section->vma;
- if ((r_type == R_M32R_GOTOFF_HI_SLO)
- && ((relocation + rel->r_addend) & 0x8000))
- rel->r_addend += 0x10000;
- break;
- case R_M32R_GOTPC24:
- /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
- ld24 rx,#_GLOBAL_OFFSET_TABLE_
- */
- relocation = sgot->output_section->vma;
- break;
- case R_M32R_GOTPC_HI_ULO:
- case R_M32R_GOTPC_HI_SLO:
- case R_M32R_GOTPC_LO:
- {
- /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
- bl .+4
- seth rx,#high(_GLOBAL_OFFSET_TABLE_)
- or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
- or
- bl .+4
- seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
- add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
- */
- relocation = sgot->output_section->vma;
- relocation -= (input_section->output_section->vma
- + input_section->output_offset
- + rel->r_offset);
- if ((r_type == R_M32R_GOTPC_HI_SLO)
- && ((relocation + rel->r_addend) & 0x8000))
- rel->r_addend += 0x10000;
- break;
- }
- case R_M32R_GOT16_HI_ULO:
- case R_M32R_GOT16_HI_SLO:
- case R_M32R_GOT16_LO:
- /* Fall through. */
- case R_M32R_GOT24:
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- BFD_ASSERT (sgot != NULL);
- if (h != NULL)
- {
- bool dyn;
- bfd_vma off;
- off = h->got.offset;
- BFD_ASSERT (off != (bfd_vma) -1);
- dyn = htab->dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h)
- || (bfd_link_pic (info)
- && (info->symbolic
- || h->dynindx == -1
- || h->forced_local)
- && h->def_regular))
- {
- /* This is actually a static link, or it is a
- -Bsymbolic link and the symbol is defined
- locally, or the symbol was forced to be local
- because of a version file. We must initialize
- this entry in the global offset table. Since the
- offset must always be a multiple of 4, we use the
- least significant bit to record whether we have
- initialized it already.
- When doing a dynamic link, we create a .rela.got
- relocation entry to initialize the value. This
- is done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_32 (output_bfd, relocation,
- sgot->contents + off);
- h->got.offset |= 1;
- }
- }
- relocation = sgot->output_offset + off;
- }
- else
- {
- bfd_vma off;
- bfd_byte *loc;
- BFD_ASSERT (local_got_offsets != NULL
- && local_got_offsets[r_symndx] != (bfd_vma) -1);
- 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 processed this entry. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_32 (output_bfd, relocation, sgot->contents + off);
- if (bfd_link_pic (info))
- {
- asection *srelgot;
- Elf_Internal_Rela outrel;
- /* We need to generate a R_M32R_RELATIVE reloc
- for the dynamic linker. */
- srelgot = htab->srelgot;
- BFD_ASSERT (srelgot != NULL);
- outrel.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + off);
- outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
- outrel.r_addend = relocation;
- loc = srelgot->contents;
- loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
- ++srelgot->reloc_count;
- }
- local_got_offsets[r_symndx] |= 1;
- }
- relocation = sgot->output_offset + off;
- }
- if ((r_type == R_M32R_GOT16_HI_SLO)
- && ((relocation + rel->r_addend) & 0x8000))
- rel->r_addend += 0x10000;
- break;
- case R_M32R_26_PLTREL:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table. */
- /* The native assembler will generate a 26_PLTREL reloc
- for a local symbol if you assemble a call from one
- section to another when using -K pic. */
- if (h == NULL)
- break;
- if (h->forced_local)
- break;
- if (h->plt.offset == (bfd_vma) -1)
- /* We didn't make a PLT entry for this symbol. This
- happens when statically linking PIC code, or when
- using -Bsymbolic. */
- break;
- relocation = (splt->output_section->vma
- + splt->output_offset
- + h->plt.offset);
- break;
- case R_M32R_HI16_SLO_RELA:
- if ((relocation + rel->r_addend) & 0x8000)
- rel->r_addend += 0x10000;
- /* Fall through. */
- case R_M32R_16_RELA:
- case R_M32R_24_RELA:
- case R_M32R_32_RELA:
- case R_M32R_REL32:
- case R_M32R_10_PCREL_RELA:
- case R_M32R_18_PCREL_RELA:
- case R_M32R_26_PCREL_RELA:
- case R_M32R_HI16_ULO_RELA:
- case R_M32R_LO16_RELA:
- if (bfd_link_pic (info)
- && r_symndx != STN_UNDEF
- && (input_section->flags & SEC_ALLOC) != 0
- && (( r_type != R_M32R_10_PCREL_RELA
- && r_type != R_M32R_18_PCREL_RELA
- && r_type != R_M32R_26_PCREL_RELA
- && r_type != R_M32R_REL32)
- || (h != NULL
- && h->dynindx != -1
- && (! info->symbolic
- || !h->def_regular))))
- {
- Elf_Internal_Rela outrel;
- bool skip, relocate;
- bfd_byte *loc;
- /* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
- if (sreloc == NULL)
- {
- sreloc = _bfd_elf_get_dynamic_reloc_section
- (input_bfd, input_section, /*rela?*/ true);
- if (sreloc == NULL)
- return false;
- }
- skip = false;
- relocate = false;
- outrel.r_offset = _bfd_elf_section_offset (output_bfd,
- info,
- input_section,
- rel->r_offset);
- if (outrel.r_offset == (bfd_vma) -1)
- skip = true;
- else if (outrel.r_offset == (bfd_vma) -2)
- skip = relocate = true;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- else if ( r_type == R_M32R_10_PCREL_RELA
- || r_type == R_M32R_18_PCREL_RELA
- || r_type == R_M32R_26_PCREL_RELA
- || r_type == R_M32R_REL32)
- {
- BFD_ASSERT (h != NULL && h->dynindx != -1);
- outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
- outrel.r_addend = rel->r_addend;
- }
- else
- {
- /* h->dynindx may be -1 if this symbol was marked to
- become local. */
- if (h == NULL
- || ((info->symbolic || h->dynindx == -1)
- && h->def_regular))
- {
- relocate = true;
- outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
- }
- else
- {
- BFD_ASSERT (h->dynindx != -1);
- outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
- outrel.r_addend = relocation + rel->r_addend;
- }
- }
- loc = sreloc->contents;
- loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
- ++sreloc->reloc_count;
- /* If this reloc is against an external symbol, we do
- not want to fiddle with the addend. Otherwise, we
- need to include the symbol value so that it becomes
- an addend for the dynamic reloc. */
- if (! relocate)
- continue;
- break;
- }
- else if (r_type != R_M32R_10_PCREL_RELA)
- break;
- /* Fall through. */
- case (int) R_M32R_10_PCREL :
- r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
- contents, offset,
- sec, relocation, addend);
- goto check_reloc;
- case (int) R_M32R_HI16_SLO :
- case (int) R_M32R_HI16_ULO :
- {
- Elf_Internal_Rela *lorel;
- /* We allow an arbitrary number of HI16 relocs before the
- LO16 reloc. This permits gcc to emit the HI and LO relocs
- itself. */
- for (lorel = rel + 1;
- (lorel < relend
- && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
- || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
- lorel++)
- continue;
- if (lorel < relend
- && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
- {
- m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
- contents, relocation + addend);
- r = bfd_reloc_ok;
- }
- else
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, offset,
- relocation, addend);
- }
- goto check_reloc;
- case (int) R_M32R_SDA16_RELA:
- case (int) R_M32R_SDA16 :
- {
- const char *name;
- BFD_ASSERT (sec != NULL);
- name = bfd_section_name (sec);
- if ( strcmp (name, ".sdata") == 0
- || strcmp (name, ".sbss") == 0
- || strcmp (name, ".scommon") == 0)
- {
- bfd_vma sda_base;
- bfd *out_bfd = sec->output_section->owner;
- r = m32r_elf_final_sda_base (out_bfd, info,
- &errmsg,
- &sda_base);
- if (r != bfd_reloc_ok)
- {
- ret = false;
- goto check_reloc;
- }
- /* At this point `relocation' contains the object's
- address. */
- relocation -= sda_base;
- /* Now it contains the offset from _SDA_BASE_. */
- }
- else
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB: the target (%s) of an %s relocation"
- " is in the wrong section (%pA)"),
- input_bfd,
- sym_name,
- m32r_elf_howto_table[(int) r_type].name,
- sec);
- /*bfd_set_error (bfd_error_bad_value); ??? why? */
- ret = false;
- continue;
- }
- }
- /* Fall through. */
- default : /* OLD_M32R_RELOC */
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, offset,
- relocation, addend);
- goto check_reloc;
- }
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend);
- }
- check_reloc:
- if (r != bfd_reloc_ok)
- {
- /* FIXME: This should be generic enough to go in a utility. */
- const char *name;
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = (bfd_elf_string_from_elf_section
- (input_bfd, symtab_hdr->sh_link, sym->st_name));
- if (name == NULL || *name == '\0')
- name = bfd_section_name (sec);
- }
- if (errmsg != NULL)
- goto common_error;
- switch (r)
- {
- case bfd_reloc_overflow:
- (*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section, offset);
- break;
- case bfd_reloc_undefined:
- (*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section, offset, true);
- break;
- case bfd_reloc_outofrange:
- errmsg = _("internal error: out of range error");
- goto common_error;
- case bfd_reloc_notsupported:
- errmsg = _("internal error: unsupported relocation error");
- goto common_error;
- case bfd_reloc_dangerous:
- errmsg = _("internal error: dangerous error");
- goto common_error;
- default:
- errmsg = _("internal error: unknown error");
- /* fall through */
- common_error:
- (*info->callbacks->warning) (info, errmsg, name, input_bfd,
- input_section, offset);
- break;
- }
- }
- }
- return ret;
- }
- /* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
- static bool
- m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- struct elf_link_hash_table *htab;
- bfd_byte *loc;
- #ifdef DEBUG_PIC
- printf ("m32r_elf_finish_dynamic_symbol()\n");
- #endif
- htab = m32r_elf_hash_table (info);
- if (htab == NULL)
- return false;
- if (h->plt.offset != (bfd_vma) -1)
- {
- asection *splt;
- asection *sgot;
- asection *srela;
- bfd_vma plt_index;
- bfd_vma got_offset;
- Elf_Internal_Rela rela;
- /* This symbol has an entry in the procedure linkage table. Set
- it up. */
- BFD_ASSERT (h->dynindx != -1);
- splt = htab->splt;
- sgot = htab->sgotplt;
- srela = htab->srelplt;
- BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
- /* Get the index in the procedure linkage table which
- corresponds to this symbol. This is the index of this symbol
- in all the symbols for which we are making plt entries. The
- first entry in the procedure linkage table is reserved. */
- plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
- /* Get the offset into the .got table of the entry that
- corresponds to this function. Each .got entry is 4 bytes.
- The first three are reserved. */
- got_offset = (plt_index + 3) * 4;
- /* Fill in the entry in the procedure linkage table. */
- if (! bfd_link_pic (info))
- {
- bfd_put_32 (output_bfd,
- (PLT_ENTRY_WORD0b
- + (((sgot->output_section->vma
- + sgot->output_offset
- + got_offset) >> 16) & 0xffff)),
- splt->contents + h->plt.offset);
- bfd_put_32 (output_bfd,
- (PLT_ENTRY_WORD1b
- + ((sgot->output_section->vma
- + sgot->output_offset
- + got_offset) & 0xffff)),
- splt->contents + h->plt.offset + 4);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
- splt->contents + h->plt.offset + 8);
- bfd_put_32 (output_bfd,
- (PLT_ENTRY_WORD3
- + plt_index * sizeof (Elf32_External_Rela)),
- splt->contents + h->plt.offset + 12);
- bfd_put_32 (output_bfd,
- (PLT_ENTRY_WORD4
- + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
- splt->contents + h->plt.offset + 16);
- }
- else
- {
- bfd_put_32 (output_bfd,
- PLT_ENTRY_WORD0 + got_offset,
- splt->contents + h->plt.offset);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
- splt->contents + h->plt.offset + 4);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
- splt->contents + h->plt.offset + 8);
- bfd_put_32 (output_bfd,
- (PLT_ENTRY_WORD3
- + plt_index * sizeof (Elf32_External_Rela)),
- splt->contents + h->plt.offset + 12);
- bfd_put_32 (output_bfd,
- (PLT_ENTRY_WORD4
- + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
- splt->contents + h->plt.offset + 16);
- }
- /* Fill in the entry in the global offset table. */
- bfd_put_32 (output_bfd,
- (splt->output_section->vma
- + splt->output_offset
- + h->plt.offset
- + 12), /* same offset */
- sgot->contents + got_offset);
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + got_offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
- rela.r_addend = 0;
- loc = srela->contents;
- loc += plt_index * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- if (!h->def_regular)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
- }
- }
- if (h->got.offset != (bfd_vma) -1)
- {
- asection *sgot;
- asection *srela;
- Elf_Internal_Rela rela;
- /* This symbol has an entry in the global offset table. Set it
- up. */
- sgot = htab->sgot;
- srela = htab->srelgot;
- BFD_ASSERT (sgot != NULL && srela != NULL);
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + (h->got.offset &~ 1));
- /* If this is a -Bsymbolic link, and the symbol is defined
- locally, we just want to emit a RELATIVE reloc. Likewise if
- the symbol was forced to be local because of a version file.
- The entry in the global offset table will already have been
- initialized in the relocate_section function. */
- if (bfd_link_pic (info)
- && (info->symbolic
- || h->dynindx == -1
- || h->forced_local)
- && h->def_regular)
- {
- rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- }
- else
- {
- BFD_ASSERT ((h->got.offset & 1) == 0);
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
- rela.r_addend = 0;
- }
- loc = srela->contents;
- loc += srela->reloc_count * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- ++srela->reloc_count;
- }
- if (h->needs_copy)
- {
- asection *s;
- Elf_Internal_Rela rela;
- /* This symbols needs a copy reloc. Set it up. */
- BFD_ASSERT (h->dynindx != -1
- && (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak));
- s = bfd_get_linker_section (htab->dynobj, ".rela.bss");
- BFD_ASSERT (s != NULL);
- rela.r_offset = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
- rela.r_addend = 0;
- loc = s->contents;
- loc += s->reloc_count * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- ++s->reloc_count;
- }
- /* Mark some specially defined symbols as absolute. */
- if (h == htab->hdynamic || h == htab->hgot)
- sym->st_shndx = SHN_ABS;
- return true;
- }
- /* Finish up the dynamic sections. */
- static bool
- m32r_elf_finish_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- struct elf_link_hash_table *htab;
- bfd *dynobj;
- asection *sdyn;
- asection *sgot;
- #ifdef DEBUG_PIC
- printf ("m32r_elf_finish_dynamic_sections()\n");
- #endif
- htab = m32r_elf_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->dynobj;
- sgot = htab->sgotplt;
- sdyn = bfd_get_linker_section (dynobj, ".dynamic");
- if (htab->dynamic_sections_created)
- {
- asection *splt;
- Elf32_External_Dyn *dyncon, *dynconend;
- BFD_ASSERT (sgot != NULL && sdyn != NULL);
- 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:
- break;
- case DT_PLTGOT:
- s = htab->sgotplt;
- goto get_vma;
- case DT_JMPREL:
- s = htab->srelplt;
- get_vma:
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- break;
- case DT_PLTRELSZ:
- s = htab->srelplt;
- dyn.d_un.d_val = s->size;
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- break;
- }
- }
- /* Fill in the first entry in the procedure linkage table. */
- splt = htab->splt;
- if (splt && splt->size > 0)
- {
- if (bfd_link_pic (info))
- {
- bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
- bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
- bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
- bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
- bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
- }
- else
- {
- unsigned long addr;
- /* addr = .got + 4 */
- addr = sgot->output_section->vma + sgot->output_offset + 4;
- bfd_put_32 (output_bfd,
- PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
- splt->contents);
- bfd_put_32 (output_bfd,
- PLT0_ENTRY_WORD1 | (addr & 0xffff),
- splt->contents + 4);
- bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
- bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
- bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
- }
- elf_section_data (splt->output_section)->this_hdr.sh_entsize =
- PLT_ENTRY_SIZE;
- }
- }
- /* Fill in the first three entries in the global offset table. */
- if (sgot && sgot->size > 0)
- {
- if (sdyn == NULL)
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
- else
- bfd_put_32 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- sgot->contents);
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
- }
- return true;
- }
- /* Set the right machine number. */
- static bool
- m32r_elf_object_p (bfd *abfd)
- {
- switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
- {
- default:
- case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break;
- case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
- case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
- }
- return true;
- }
- /* Store the machine number in the flags field. */
- static bool
- m32r_elf_final_write_processing (bfd *abfd)
- {
- unsigned long val;
- switch (bfd_get_mach (abfd))
- {
- default:
- case bfd_mach_m32r: val = E_M32R_ARCH; break;
- case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
- case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
- }
- elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
- elf_elfheader (abfd)->e_flags |= val;
- return _bfd_elf_final_write_processing (abfd);
- }
- /* Function to keep M32R specific file flags. */
- static bool
- m32r_elf_set_private_flags (bfd *abfd, flagword flags)
- {
- BFD_ASSERT (!elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = true;
- return true;
- }
- /* Merge backend specific data from an object file to the output
- object file when linking. */
- static bool
- m32r_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
- {
- bfd *obfd = info->output_bfd;
- flagword out_flags;
- flagword in_flags;
- if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
- in_flags = elf_elfheader (ibfd)->e_flags;
- out_flags = elf_elfheader (obfd)->e_flags;
- if (! elf_flags_init (obfd))
- {
- /* If the input is the default architecture then do not
- bother setting the flags for the output architecture,
- instead allow future merges to do this. If no future
- merges ever set these flags then they will retain their
- unitialised values, which surprise surprise, correspond
- to the default values. */
- if (bfd_get_arch_info (ibfd)->the_default)
- return true;
- elf_flags_init (obfd) = true;
- elf_elfheader (obfd)->e_flags = in_flags;
- if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
- && bfd_get_arch_info (obfd)->the_default)
- return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
- bfd_get_mach (ibfd));
- return true;
- }
- /* Check flag compatibility. */
- if (in_flags == out_flags)
- return true;
- if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
- {
- if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH)
- || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
- || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH))
- {
- _bfd_error_handler
- (_("%pB: instruction set mismatch with previous modules"), ibfd);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- }
- return true;
- }
- /* Display the flags field. */
- static bool
- m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
- {
- FILE * file = (FILE *) ptr;
- BFD_ASSERT (abfd != NULL && ptr != NULL);
- _bfd_elf_print_private_bfd_data (abfd, ptr);
- fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
- switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
- {
- default:
- case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break;
- case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
- case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
- }
- fputc ('\n', file);
- return true;
- }
- static asection *
- m32r_elf_gc_mark_hook (asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- if (h != NULL)
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_M32R_GNU_VTINHERIT:
- case R_M32R_GNU_VTENTRY:
- case R_M32R_RELA_GNU_VTINHERIT:
- case R_M32R_RELA_GNU_VTENTRY:
- return NULL;
- }
- return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
- }
- /* Look through the relocs for a section during the first phase.
- Since we don't do .gots or .plts, we just need to consider the
- virtual table relocs for gc. */
- static bool
- m32r_elf_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 **sym_hashes;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- struct elf_link_hash_table *htab;
- bfd *dynobj;
- asection *sreloc;
- if (bfd_link_relocatable (info))
- return true;
- sreloc = NULL;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- htab = m32r_elf_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->dynobj;
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- int r_type;
- struct elf_link_hash_entry *h;
- unsigned long r_symndx;
- r_symndx = ELF32_R_SYM (rel->r_info);
- r_type = ELF32_R_TYPE (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- }
- /* Some relocs require a global offset table. */
- if (htab->sgot == NULL)
- {
- switch (r_type)
- {
- case R_M32R_GOT16_HI_ULO:
- case R_M32R_GOT16_HI_SLO:
- case R_M32R_GOTOFF:
- case R_M32R_GOTOFF_HI_ULO:
- case R_M32R_GOTOFF_HI_SLO:
- case R_M32R_GOTOFF_LO:
- case R_M32R_GOT16_LO:
- case R_M32R_GOTPC24:
- case R_M32R_GOTPC_HI_ULO:
- case R_M32R_GOTPC_HI_SLO:
- case R_M32R_GOTPC_LO:
- case R_M32R_GOT24:
- if (dynobj == NULL)
- htab->dynobj = dynobj = abfd;
- if (!_bfd_elf_create_got_section (dynobj, info))
- return false;
- break;
- default:
- break;
- }
- }
- switch (r_type)
- {
- case R_M32R_GOT16_HI_ULO:
- case R_M32R_GOT16_HI_SLO:
- case R_M32R_GOT16_LO:
- case R_M32R_GOT24:
- if (h != NULL)
- h->got.refcount += 1;
- else
- {
- bfd_signed_vma *local_got_refcounts;
- /* This is a global offset table entry for a local
- symbol. */
- local_got_refcounts = elf_local_got_refcounts (abfd);
- if (local_got_refcounts == NULL)
- {
- bfd_size_type size;
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts = bfd_zalloc (abfd, size);
- if (local_got_refcounts == NULL)
- return false;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- }
- local_got_refcounts[r_symndx] += 1;
- }
- break;
- case R_M32R_26_PLTREL:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code without
- linking in any dynamic objects, in which case we don't
- need to generate a procedure linkage table after all. */
- /* If this is a local symbol, we resolve it directly without
- creating a procedure linkage table entry. */
- if (h == NULL)
- continue;
- if (h->forced_local)
- break;
- h->needs_plt = 1;
- h->plt.refcount += 1;
- break;
- case R_M32R_16_RELA:
- case R_M32R_24_RELA:
- case R_M32R_32_RELA:
- case R_M32R_REL32:
- case R_M32R_HI16_ULO_RELA:
- case R_M32R_HI16_SLO_RELA:
- case R_M32R_LO16_RELA:
- case R_M32R_SDA16_RELA:
- case R_M32R_10_PCREL_RELA:
- case R_M32R_18_PCREL_RELA:
- case R_M32R_26_PCREL_RELA:
- if (h != NULL && !bfd_link_pic (info))
- {
- h->non_got_ref = 1;
- h->plt.refcount += 1;
- }
- /* If we are creating a shared library, and this is a reloc
- against a global symbol, or a non PC relative reloc
- against a local symbol, then we need to copy the reloc
- into the shared library. However, if we are linking with
- -Bsymbolic, we do not need to copy a reloc against a
- global symbol which is defined in an object we are
- including in the link (i.e., DEF_REGULAR is set). At
- this point we have not seen all the input files, so it is
- possible that DEF_REGULAR is not set now but will be set
- later (it is never cleared). We account for that
- possibility below by storing information in the
- dyn_relocs field of the hash table entry. A similar
- situation occurs when creating shared libraries and symbol
- visibility changes render the symbol local.
- If on the other hand, we are creating an executable, we
- may need to keep relocations for symbols satisfied by a
- dynamic library if we manage to avoid copy relocs for the
- symbol. */
- if ((bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && (( r_type != R_M32R_26_PCREL_RELA
- && r_type != R_M32R_18_PCREL_RELA
- && r_type != R_M32R_10_PCREL_RELA
- && r_type != R_M32R_REL32)
- || (h != NULL
- && (! info->symbolic
- || h->root.type == bfd_link_hash_defweak
- || !h->def_regular))))
- || (!bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && h != NULL
- && (h->root.type == bfd_link_hash_defweak
- || !h->def_regular)))
- {
- struct elf_dyn_relocs *p;
- struct elf_dyn_relocs **head;
- if (dynobj == NULL)
- htab->dynobj = dynobj = abfd;
- /* When creating a shared object, we must copy these
- relocs into the output file. We create a reloc
- section in dynobj and make room for the reloc. */
- if (sreloc == NULL)
- {
- sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, dynobj, 2, abfd, /*rela?*/ true);
- if (sreloc == NULL)
- return false;
- }
- /* If this is a global symbol, we count the number of
- relocations we need for this symbol. */
- if (h != NULL)
- head = &h->dyn_relocs;
- else
- {
- /* Track dynamic relocs needed for local syms too. */
- asection *s;
- void *vpp;
- Elf_Internal_Sym *isym;
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return false;
- s = bfd_section_from_elf_index (abfd, isym->st_shndx);
- if (s == NULL)
- s = sec;
- vpp = &elf_section_data (s)->local_dynrel;
- head = (struct elf_dyn_relocs **) vpp;
- }
- p = *head;
- if (p == NULL || p->sec != sec)
- {
- size_t amt = sizeof (*p);
- p = bfd_alloc (dynobj, amt);
- if (p == NULL)
- return false;
- p->next = *head;
- *head = p;
- p->sec = sec;
- p->count = 0;
- p->pc_count = 0;
- }
- p->count += 1;
- if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
- || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
- || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
- || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
- p->pc_count += 1;
- }
- break;
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- case R_M32R_RELA_GNU_VTINHERIT:
- case R_M32R_GNU_VTINHERIT:
- if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return false;
- break;
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- case R_M32R_GNU_VTENTRY:
- if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
- return false;
- break;
- case R_M32R_RELA_GNU_VTENTRY:
- if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return false;
- break;
- }
- }
- return true;
- }
- static const struct bfd_elf_special_section m32r_elf_special_sections[] =
- {
- { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
- { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
- { NULL, 0, 0, 0, 0 }
- };
- static bool
- m32r_elf_section_flags (const Elf_Internal_Shdr *hdr)
- {
- const char *name = hdr->bfd_section->name;
- if (startswith (name, ".sbss")
- || startswith (name, ".sdata"))
- hdr->bfd_section->flags |= SEC_SMALL_DATA;
- return true;
- }
- static enum elf_reloc_type_class
- m32r_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
- const asection *rel_sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela *rela)
- {
- switch ((int) ELF32_R_TYPE (rela->r_info))
- {
- case R_M32R_RELATIVE: return reloc_class_relative;
- case R_M32R_JMP_SLOT: return reloc_class_plt;
- case R_M32R_COPY: return reloc_class_copy;
- default: return reloc_class_normal;
- }
- }
- #define ELF_ARCH bfd_arch_m32r
- #define ELF_TARGET_ID M32R_ELF_DATA
- #define ELF_MACHINE_CODE EM_M32R
- #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R
- #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */
- #define TARGET_BIG_SYM m32r_elf32_vec
- #define TARGET_BIG_NAME "elf32-m32r"
- #define TARGET_LITTLE_SYM m32r_elf32_le_vec
- #define TARGET_LITTLE_NAME "elf32-m32rle"
- #define elf_info_to_howto m32r_info_to_howto
- #define elf_info_to_howto_rel m32r_info_to_howto_rel
- #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section
- #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing
- #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook
- #define elf_backend_relocate_section m32r_elf_relocate_section
- #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook
- #define elf_backend_check_relocs m32r_elf_check_relocs
- #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections
- #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create
- #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections
- #define elf_backend_omit_section_dynsym _bfd_elf_omit_section_dynsym_all
- #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections
- #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol
- #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol
- #define elf_backend_reloc_type_class m32r_elf_reloc_type_class
- #define elf_backend_can_gc_sections 1
- /*#if !USE_REL
- #define elf_backend_rela_normal 1
- #endif*/
- #define elf_backend_can_refcount 1
- #define elf_backend_want_got_plt 1
- #define elf_backend_plt_readonly 1
- #define elf_backend_want_plt_sym 0
- #define elf_backend_got_header_size 12
- #define elf_backend_dtrel_excludes_plt 1
- #define elf_backend_may_use_rel_p 1
- #ifdef USE_M32R_OLD_RELOC
- #define elf_backend_default_use_rela_p 0
- #define elf_backend_may_use_rela_p 0
- #else
- #define elf_backend_default_use_rela_p 1
- #define elf_backend_may_use_rela_p 1
- #endif
- #define elf_backend_object_p m32r_elf_object_p
- #define elf_backend_final_write_processing m32r_elf_final_write_processing
- #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data
- #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags
- #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data
- #define elf_backend_special_sections m32r_elf_special_sections
- #define elf_backend_section_flags m32r_elf_section_flags
- #define elf_backend_linux_prpsinfo32_ugid16 true
- #include "elf32-target.h"
- #undef ELF_MAXPAGESIZE
- #define ELF_MAXPAGESIZE 0x1000
- #undef TARGET_BIG_SYM
- #define TARGET_BIG_SYM m32r_elf32_linux_vec
- #undef TARGET_BIG_NAME
- #define TARGET_BIG_NAME "elf32-m32r-linux"
- #undef TARGET_LITTLE_SYM
- #define TARGET_LITTLE_SYM m32r_elf32_linux_le_vec
- #undef TARGET_LITTLE_NAME
- #define TARGET_LITTLE_NAME "elf32-m32rle-linux"
- #undef elf32_bed
- #define elf32_bed elf32_m32r_lin_bed
- #include "elf32-target.h"
|