12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073107410751076107710781079108010811082108310841085108610871088108910901091109210931094109510961097109810991100110111021103110411051106110711081109111011111112111311141115111611171118111911201121112211231124112511261127112811291130113111321133113411351136113711381139114011411142114311441145114611471148114911501151115211531154115511561157115811591160116111621163116411651166116711681169117011711172117311741175117611771178117911801181118211831184118511861187118811891190119111921193119411951196119711981199120012011202120312041205120612071208120912101211121212131214121512161217121812191220122112221223122412251226122712281229123012311232123312341235123612371238123912401241124212431244124512461247124812491250125112521253125412551256125712581259126012611262126312641265126612671268126912701271127212731274127512761277127812791280128112821283128412851286128712881289129012911292129312941295129612971298129913001301130213031304130513061307130813091310131113121313131413151316131713181319132013211322132313241325132613271328132913301331133213331334133513361337133813391340134113421343134413451346134713481349135013511352135313541355135613571358135913601361136213631364136513661367136813691370137113721373137413751376137713781379138013811382138313841385138613871388138913901391139213931394139513961397139813991400140114021403140414051406140714081409141014111412141314141415141614171418 |
- /* i370-specific support for 32-bit ELF
- Copyright (C) 1994-2015 Free Software Foundation, Inc.
- Written by Ian Lance Taylor, Cygnus Support.
- Hacked by Linas Vepstas for i370 linas@linas.org
- This file is part of BFD, the Binary File Descriptor library.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
- MA 02110-1301, USA. */
- /* This file is based on a preliminary PowerPC ELF ABI.
- But its been hacked on for the IBM 360/370 architectures.
- Basically, the 31bit relocation works, and just about everything
- else is a wild card. In particular, don't expect shared libs or
- dynamic loading to work ... its never been tested. */
- #include "sysdep.h"
- #include "bfd.h"
- #include "bfdlink.h"
- #include "libbfd.h"
- #include "elf-bfd.h"
- #include "elf/i370.h"
- static reloc_howto_type *i370_elf_howto_table[ (int)R_I370_max ];
- static reloc_howto_type i370_elf_howto_raw[] =
- {
- /* This reloc does nothing. */
- HOWTO (R_I370_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_I370_NONE", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- FALSE), /* pcrel_offset */
- /* A standard 31 bit relocation. */
- HOWTO (R_I370_ADDR31, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 31, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_I370_ADDR31", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x7fffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
- /* A standard 32 bit relocation. */
- HOWTO (R_I370_ADDR32, /* 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_I370_ADDR32", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
- /* A standard 16 bit relocation. */
- HOWTO (R_I370_ADDR16, /* 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_I370_ADDR16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- FALSE), /* pcrel_offset */
- /* 31-bit PC relative. */
- HOWTO (R_I370_REL31, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 31, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_I370_REL31", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0x7fffffff, /* dst_mask */
- TRUE), /* pcrel_offset */
- /* 32-bit PC relative. */
- HOWTO (R_I370_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_I370_REL32", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- TRUE), /* pcrel_offset */
- /* A standard 12 bit relocation. */
- HOWTO (R_I370_ADDR12, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_I370_ADDR12", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfff, /* dst_mask */
- FALSE), /* pcrel_offset */
- /* 12-bit PC relative. */
- HOWTO (R_I370_REL12, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 12, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_I370_REL12", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xfff, /* dst_mask */
- TRUE), /* pcrel_offset */
- /* A standard 8 bit relocation. */
- HOWTO (R_I370_ADDR8, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_I370_ADDR8", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xff, /* dst_mask */
- FALSE), /* pcrel_offset */
- /* 8-bit PC relative. */
- HOWTO (R_I370_REL8, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_I370_REL8", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xff, /* 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_I370_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_I370_COPY", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0, /* 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_I370_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_I370_RELATIVE", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- FALSE), /* pcrel_offset */
- };
- /* Initialize the i370_elf_howto_table, so that linear accesses can be done. */
- static void
- i370_elf_howto_init (void)
- {
- unsigned int i, type;
- for (i = 0; i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); i++)
- {
- type = i370_elf_howto_raw[i].type;
- BFD_ASSERT (type < sizeof (i370_elf_howto_table) / sizeof (i370_elf_howto_table[0]));
- i370_elf_howto_table[type] = &i370_elf_howto_raw[i];
- }
- }
- static reloc_howto_type *
- i370_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
- {
- enum i370_reloc_type i370_reloc = R_I370_NONE;
- if (!i370_elf_howto_table[ R_I370_ADDR31 ])
- /* Initialize howto table if needed. */
- i370_elf_howto_init ();
- switch ((int) code)
- {
- default:
- return NULL;
- case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break;
- case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break;
- case BFD_RELOC_16: i370_reloc = R_I370_ADDR16; break;
- case BFD_RELOC_32_PCREL: i370_reloc = R_I370_REL31; break;
- case BFD_RELOC_CTOR: i370_reloc = R_I370_ADDR31; break;
- case BFD_RELOC_I370_D12: i370_reloc = R_I370_ADDR12; break;
- }
- return i370_elf_howto_table[ (int)i370_reloc ];
- };
- static reloc_howto_type *
- i370_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
- {
- unsigned int i;
- for (i = 0;
- i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]);
- i++)
- if (i370_elf_howto_raw[i].name != NULL
- && strcasecmp (i370_elf_howto_raw[i].name, r_name) == 0)
- return &i370_elf_howto_raw[i];
- return NULL;
- }
- /* The name of the dynamic interpreter. This is put in the .interp
- section. */
- #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so"
- /* Set the howto pointer for an i370 ELF reloc. */
- static void
- i370_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
- arelent *cache_ptr,
- Elf_Internal_Rela *dst)
- {
- unsigned int r_type;
- if (!i370_elf_howto_table[ R_I370_ADDR31 ])
- /* Initialize howto table. */
- i370_elf_howto_init ();
- r_type = ELF32_R_TYPE (dst->r_info);
- if (r_type >= R_I370_max)
- {
- (*_bfd_error_handler) (_("%B: unrecognised I370 reloc number: %d"),
- abfd, r_type);
- bfd_set_error (bfd_error_bad_value);
- r_type = R_I370_NONE;
- }
- cache_ptr->howto = i370_elf_howto_table[r_type];
- }
- /* Hack alert -- the following several routines look generic to me ...
- why are we bothering with them ? */
- /* Function to set whether a module needs the -mrelocatable bit set. */
- static bfd_boolean
- i370_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 bfd_boolean
- i370_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
- {
- flagword old_flags;
- flagword new_flags;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return TRUE;
- new_flags = elf_elfheader (ibfd)->e_flags;
- old_flags = elf_elfheader (obfd)->e_flags;
- if (!elf_flags_init (obfd)) /* First call, no flags set. */
- {
- elf_flags_init (obfd) = TRUE;
- elf_elfheader (obfd)->e_flags = new_flags;
- }
- else if (new_flags == old_flags) /* Compatible flags are ok. */
- ;
- else /* Incompatible flags. */
- {
- (*_bfd_error_handler)
- ("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
- ibfd, (long) new_flags, (long) old_flags);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- return TRUE;
- }
- /* Handle an i370 specific section when reading an object file. This
- is called when elfcode.h finds a section with an unknown type. */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_section_from_shdr (bfd *abfd,
- Elf_Internal_Shdr *hdr,
- const char *name,
- int shindex)
- {
- asection *newsect;
- flagword flags;
- if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
- return FALSE;
- newsect = hdr->bfd_section;
- flags = bfd_get_section_flags (abfd, newsect);
- if (hdr->sh_type == SHT_ORDERED)
- flags |= SEC_SORT_ENTRIES;
- bfd_set_section_flags (abfd, newsect, flags);
- return TRUE;
- }
- /* Set up any other section flags and such that may be necessary. */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
- Elf_Internal_Shdr *shdr,
- asection *asect)
- {
- if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
- shdr->sh_flags |= SHF_EXCLUDE;
- if ((asect->flags & SEC_SORT_ENTRIES) != 0)
- shdr->sh_type = SHT_ORDERED;
- return TRUE;
- }
- /* We have to create .dynsbss and .rela.sbss here so that they get mapped
- to output sections (just like _bfd_elf_create_dynamic_sections has
- to create .dynbss and .rela.bss). */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
- {
- asection *s;
- flagword flags;
- if (!_bfd_elf_create_dynamic_sections(abfd, info))
- return FALSE;
- flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_LINKER_CREATED);
- s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
- SEC_ALLOC | SEC_LINKER_CREATED);
- if (s == NULL)
- return FALSE;
- if (! bfd_link_pic (info))
- {
- s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss",
- flags | SEC_READONLY);
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s, 2))
- return FALSE;
- }
- /* XXX beats me, seem to need a rela.text ... */
- s = bfd_make_section_anyway_with_flags (abfd, ".rela.text",
- flags | SEC_READONLY);
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s, 2))
- 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. */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
- {
- bfd *dynobj = elf_hash_table (info)->dynobj;
- asection *s;
- #ifdef DEBUG
- fprintf (stderr, "i370_elf_adjust_dynamic_symbol called for %s\n",
- h->root.root.string);
- #endif
- /* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && (h->needs_plt
- || h->u.weakdef != NULL
- || (h->def_dynamic
- && h->ref_regular
- && !h->def_regular)));
- s = bfd_get_linker_section (dynobj, ".rela.text");
- BFD_ASSERT (s != NULL);
- s->size += sizeof (Elf32_External_Rela);
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->u.weakdef != NULL)
- {
- BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
- || h->u.weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->u.weakdef->root.u.def.section;
- h->root.u.def.value = h->u.weakdef->root.u.def.value;
- 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;
- /* 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.
- Of course, if the symbol is sufficiently small, we must instead
- allocate it in .sbss. FIXME: It would be better to do this if and
- only if there were actually SDAREL relocs for that symbol. */
- if (h->size <= elf_gp_size (dynobj))
- s = bfd_get_linker_section (dynobj, ".dynsbss");
- else
- s = bfd_get_linker_section (dynobj, ".dynbss");
- BFD_ASSERT (s != NULL);
- /* We must generate a R_I370_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;
- if (h->size <= elf_gp_size (dynobj))
- srel = bfd_get_linker_section (dynobj, ".rela.sbss");
- else
- srel = bfd_get_linker_section (dynobj, ".rela.bss");
- BFD_ASSERT (srel != NULL);
- srel->size += sizeof (Elf32_External_Rela);
- h->needs_copy = 1;
- }
- return _bfd_elf_adjust_dynamic_copy (info, h, s);
- }
- /* Increment the index of a dynamic symbol by a given amount. Called
- via elf_link_hash_traverse. */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_adjust_dynindx (struct elf_link_hash_entry *h, void * cparg)
- {
- int *cp = (int *) cparg;
- #ifdef DEBUG
- fprintf (stderr,
- "i370_elf_adjust_dynindx called, h->dynindx = %ld, *cp = %d\n",
- h->dynindx, *cp);
- #endif
- if (h->dynindx != -1)
- h->dynindx += *cp;
- return TRUE;
- }
- /* Set the sizes of the dynamic sections. */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_size_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- bfd *dynobj;
- asection *s;
- bfd_boolean plt;
- bfd_boolean relocs;
- bfd_boolean reltext;
- #ifdef DEBUG
- fprintf (stderr, "i370_elf_size_dynamic_sections called\n");
- #endif
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
- if (elf_hash_table (info)->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;
- }
- }
- else
- {
- /* We may have created entries in the .rela.got, .rela.sdata, and
- .rela.sdata2 sections. However, if we are not creating the
- dynamic sections, we will not actually use these entries. Reset
- the size of .rela.got, et al, which will cause it to get
- stripped from the output file below. */
- static char *rela_sections[] = { ".rela.got", ".rela.sdata",
- ".rela.sdata2", ".rela.sbss",
- NULL };
- char **p;
- for (p = rela_sections; *p != NULL; p++)
- {
- s = bfd_get_linker_section (dynobj, *p);
- if (s != NULL)
- s->size = 0;
- }
- }
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- plt = FALSE;
- relocs = FALSE;
- reltext = FALSE;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- const char *name;
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
- /* It's OK to base decisions on the section name, because none
- of the dynobj section names depend upon the input files. */
- name = bfd_get_section_name (dynobj, s);
- if (strcmp (name, ".plt") == 0)
- {
- /* Remember whether there is a PLT. */
- plt = s->size != 0;
- }
- else if (CONST_STRNEQ (name, ".rela"))
- {
- if (s->size != 0)
- {
- asection *target;
- const char *outname;
- /* Remember whether there are any relocation sections. */
- relocs = TRUE;
- /* If this relocation section applies to a read only
- section, then we probably need a DT_TEXTREL entry. */
- outname = bfd_get_section_name (output_bfd,
- s->output_section);
- target = bfd_get_section_by_name (output_bfd, outname + 5);
- if (target != NULL
- && (target->flags & SEC_READONLY) != 0
- && (target->flags & SEC_ALLOC) != 0)
- reltext = 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 if (strcmp (name, ".got") != 0
- && strcmp (name, ".sdata") != 0
- && strcmp (name, ".sdata2") != 0
- && strcmp (name, ".dynbss") != 0
- && strcmp (name, ".dynsbss") != 0)
- {
- /* 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. */
- s->contents = bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL)
- return FALSE;
- }
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Add some entries to the .dynamic section. We fill in the
- values later, in i370_elf_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
- #define add_dynamic_entry(TAG, VAL) \
- _bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (!bfd_link_pic (info))
- {
- if (!add_dynamic_entry (DT_DEBUG, 0))
- return FALSE;
- }
- if (plt)
- {
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_RELA)
- || !add_dynamic_entry (DT_JMPREL, 0))
- return FALSE;
- }
- if (relocs)
- {
- if (!add_dynamic_entry (DT_RELA, 0)
- || !add_dynamic_entry (DT_RELASZ, 0)
- || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
- return FALSE;
- }
- if (reltext)
- {
- if (!add_dynamic_entry (DT_TEXTREL, 0))
- return FALSE;
- info->flags |= DF_TEXTREL;
- }
- }
- #undef add_dynamic_entry
- /* If we are generating a shared library, we generate a section
- symbol for each output section. These are local symbols, which
- means that they must come first in the dynamic symbol table.
- That means we must increment the dynamic symbol index of every
- other dynamic symbol.
- FIXME: We assume that there will never be relocations to
- locations in linker-created sections that do not have
- externally-visible names. Instead, we should work out precisely
- which sections relocations are targeted at. */
- if (bfd_link_pic (info))
- {
- int c;
- for (c = 0, s = output_bfd->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LINKER_CREATED) != 0
- || (s->flags & SEC_ALLOC) == 0)
- {
- elf_section_data (s)->dynindx = -1;
- continue;
- }
- /* These symbols will have no names, so we don't need to
- fiddle with dynstr_index. */
- elf_section_data (s)->dynindx = c + 1;
- c++;
- }
- elf_link_hash_traverse (elf_hash_table (info),
- i370_elf_adjust_dynindx, & c);
- elf_hash_table (info)->dynsymcount += c;
- }
- return TRUE;
- }
- /* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table or procedure linkage
- table. */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_check_relocs (bfd *abfd,
- struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
- {
- bfd *dynobj;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- asection *sreloc;
- if (bfd_link_relocatable (info))
- return TRUE;
- #ifdef DEBUG
- _bfd_error_handler ("i370_elf_check_relocs called for section %A in %B",
- sec, abfd);
- #endif
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- sreloc = NULL;
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- r_symndx = ELF32_R_SYM (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;
- /* PR15323, ref flags aren't set for references in the same
- object. */
- h->root.non_ir_ref = 1;
- }
- if (bfd_link_pic (info))
- {
- #ifdef DEBUG
- fprintf (stderr,
- "i370_elf_check_relocs needs to create relocation for %s\n",
- (h && h->root.root.string)
- ? h->root.root.string : "<unknown>");
- #endif
- if (sreloc == NULL)
- {
- sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
- if (sreloc == NULL)
- return FALSE;
- }
- sreloc->size += sizeof (Elf32_External_Rela);
- /* FIXME: We should here do what the m68k and i386
- backends do: if the reloc is pc-relative, record it
- in case it turns out that the reloc is unnecessary
- because the symbol is forced local by versioning or
- we are linking with -Bdynamic. Fortunately this
- case is not frequent. */
- }
- }
- return TRUE;
- }
- /* Finish up the dynamic sections. */
- /* XXX hack alert bogus This routine is mostly all junk and almost
- certainly does the wrong thing. Its here simply because it does
- just enough to allow glibc-2.1 ld.so to compile & link. */
- static bfd_boolean
- i370_elf_finish_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- asection *sdyn;
- bfd *dynobj = elf_hash_table (info)->dynobj;
- asection *sgot = bfd_get_linker_section (dynobj, ".got");
- #ifdef DEBUG
- fprintf (stderr, "i370_elf_finish_dynamic_sections called\n");
- #endif
- sdyn = bfd_get_linker_section (dynobj, ".dynamic");
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- asection *splt;
- Elf32_External_Dyn *dyncon, *dynconend;
- splt = bfd_get_linker_section (dynobj, ".plt");
- BFD_ASSERT (splt != 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;
- const char *name;
- bfd_boolean size;
- bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
- switch (dyn.d_tag)
- {
- case DT_PLTGOT: name = ".plt"; size = FALSE; break;
- case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
- case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
- default: name = NULL; size = FALSE; break;
- }
- if (name != NULL)
- {
- asection *s;
- s = bfd_get_section_by_name (output_bfd, name);
- if (s == NULL)
- dyn.d_un.d_val = 0;
- else
- {
- if (! size)
- dyn.d_un.d_ptr = s->vma;
- else
- dyn.d_un.d_val = s->size;
- }
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- }
- }
- if (sgot && sgot->size != 0)
- {
- unsigned char *contents = sgot->contents;
- if (sdyn == NULL)
- bfd_put_32 (output_bfd, (bfd_vma) 0, contents);
- else
- bfd_put_32 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- contents);
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
- }
- if (bfd_link_pic (info))
- {
- asection *sdynsym;
- asection *s;
- Elf_Internal_Sym sym;
- int maxdindx = 0;
- /* Set up the section symbols for the output sections. */
- sdynsym = bfd_get_linker_section (dynobj, ".dynsym");
- BFD_ASSERT (sdynsym != NULL);
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- sym.st_other = 0;
- sym.st_target_internal = 0;
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- int indx, dindx;
- Elf32_External_Sym *esym;
- sym.st_value = s->vma;
- indx = elf_section_data (s)->this_idx;
- dindx = elf_section_data (s)->dynindx;
- if (dindx != -1)
- {
- BFD_ASSERT(indx > 0);
- BFD_ASSERT(dindx > 0);
- if (dindx > maxdindx)
- maxdindx = dindx;
- sym.st_shndx = indx;
- esym = (Elf32_External_Sym *) sdynsym->contents + dindx;
- bfd_elf32_swap_symbol_out (output_bfd, &sym, esym, NULL);
- }
- }
- /* Set the sh_info field of the output .dynsym section to the
- index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
- maxdindx + 1;
- }
- return TRUE;
- }
- /* The RELOCATE_SECTION function is called by the 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 bfd_boolean
- i370_elf_relocate_section (bfd *output_bfd,
- struct bfd_link_info *info,
- bfd *input_bfd,
- asection *input_section,
- bfd_byte *contents,
- Elf_Internal_Rela *relocs,
- Elf_Internal_Sym *local_syms,
- asection **local_sections)
- {
- 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 = relocs;
- Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
- asection *sreloc = NULL;
- bfd_boolean ret = TRUE;
- #ifdef DEBUG
- _bfd_error_handler ("i370_elf_relocate_section called for %B section %A, %ld relocations%s",
- input_bfd, input_section,
- (long) input_section->reloc_count,
- (bfd_link_relocatable (info)) ? " (relocatable)" : "");
- #endif
- if (!i370_elf_howto_table[ R_I370_ADDR31 ])
- /* Initialize howto table if needed. */
- i370_elf_howto_init ();
- for (; rel < relend; rel++)
- {
- enum i370_reloc_type r_type = (enum i370_reloc_type) ELF32_R_TYPE (rel->r_info);
- bfd_vma offset = rel->r_offset;
- bfd_vma addend = rel->r_addend;
- bfd_reloc_status_type r = bfd_reloc_other;
- Elf_Internal_Sym *sym = NULL;
- asection *sec = NULL;
- struct elf_link_hash_entry * h = NULL;
- const char *sym_name = NULL;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- bfd_vma relocation;
- /* Unknown relocation handling. */
- if ((unsigned) r_type >= (unsigned) R_I370_max
- || !i370_elf_howto_table[(int)r_type])
- {
- (*_bfd_error_handler) ("%B: unknown relocation type %d",
- input_bfd,
- (int) r_type);
- bfd_set_error (bfd_error_bad_value);
- ret = FALSE;
- continue;
- }
- howto = i370_elf_howto_table[(int) r_type];
- r_symndx = ELF32_R_SYM (rel->r_info);
- relocation = 0;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- sym_name = "<local symbol>";
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, & sec, rel);
- addend = rel->r_addend;
- }
- else
- {
- 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)
- {
- sec = h->root.u.def.section;
- if (bfd_link_pic (info)
- && ((! info->symbolic && h->dynindx != -1)
- || !h->def_regular)
- && (input_section->flags & SEC_ALLOC) != 0
- && (r_type == R_I370_ADDR31
- || r_type == R_I370_COPY
- || r_type == R_I370_ADDR16
- || r_type == R_I370_RELATIVE))
- /* 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
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- 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))
- {
- if ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset,
- (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
- || ELF_ST_VISIBILITY (h->other))))
- {
- ret = FALSE;
- continue;
- }
- }
- }
- if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend, howto, 0, contents);
- if (bfd_link_relocatable (info))
- continue;
- switch ((int) r_type)
- {
- default:
- (*_bfd_error_handler)
- ("%B: unknown relocation type %d for symbol %s",
- input_bfd, (int) r_type, sym_name);
- bfd_set_error (bfd_error_bad_value);
- ret = FALSE;
- continue;
- case (int) R_I370_NONE:
- continue;
- /* Relocations that may need to be propagated if this is a shared
- object. */
- case (int) R_I370_REL31:
- /* If these relocations are not to a named symbol, they can be
- handled right here, no need to bother the dynamic linker. */
- if (h == NULL
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
- break;
- /* Fall through. */
- /* Relocations that always need to be propagated if this is a shared
- object. */
- case (int) R_I370_ADDR31:
- case (int) R_I370_ADDR16:
- if (bfd_link_pic (info)
- && r_symndx != STN_UNDEF)
- {
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- int skip;
- #ifdef DEBUG
- fprintf (stderr,
- "i370_elf_relocate_section needs to create relocation for %s\n",
- (h && h->root.root.string) ? h->root.root.string : "<unknown>");
- #endif
- /* 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 = 0;
- outrel.r_offset =
- _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset);
- if (outrel.r_offset == (bfd_vma) -1
- || outrel.r_offset == (bfd_vma) -2)
- skip = (int) outrel.r_offset;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- /* h->dynindx may be -1 if this symbol was marked to
- become local. */
- else if (h != NULL
- && ((! info->symbolic && h->dynindx != -1)
- || !h->def_regular))
- {
- BFD_ASSERT (h->dynindx != -1);
- outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
- outrel.r_addend = rel->r_addend;
- }
- else
- {
- if (r_type == R_I370_ADDR31)
- {
- outrel.r_info = ELF32_R_INFO (0, R_I370_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
- }
- else
- {
- long indx;
- if (bfd_is_abs_section (sec))
- indx = 0;
- else if (sec == NULL || sec->owner == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- else
- {
- asection *osec;
- /* We are turning this relocation into one
- against a section symbol. It would be
- proper to subtract the symbol's value,
- osec->vma, from the emitted reloc addend,
- but ld.so expects buggy relocs. */
- osec = sec->output_section;
- indx = elf_section_data (osec)->dynindx;
- if (indx == 0)
- {
- struct elf_link_hash_table *htab;
- htab = elf_hash_table (info);
- osec = htab->text_index_section;
- indx = elf_section_data (osec)->dynindx;
- }
- BFD_ASSERT (indx != 0);
- #ifdef DEBUG
- if (indx <= 0)
- {
- printf ("indx=%ld section=%s flags=%08x name=%s\n",
- indx, osec->name, osec->flags,
- h->root.root.string);
- }
- #endif
- }
- outrel.r_info = ELF32_R_INFO (indx, 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);
- /* This reloc will be computed at runtime, so there's no
- need to do anything now, unless this is a RELATIVE
- reloc in an unallocated section. */
- if (skip == -1
- || (input_section->flags & SEC_ALLOC) != 0
- || ELF32_R_TYPE (outrel.r_info) != R_I370_RELATIVE)
- continue;
- }
- break;
- case (int) R_I370_COPY:
- case (int) R_I370_RELATIVE:
- (*_bfd_error_handler)
- ("%B: Relocation %s is not yet supported for symbol %s.",
- input_bfd,
- i370_elf_howto_table[(int) r_type]->name,
- sym_name);
- bfd_set_error (bfd_error_invalid_operation);
- ret = FALSE;
- continue;
- }
- #ifdef DEBUG
- fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
- howto->name,
- (int)r_type,
- sym_name,
- r_symndx,
- (long) offset,
- (long) addend);
- #endif
- r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents,
- offset, relocation, addend);
- if (r != bfd_reloc_ok)
- {
- ret = FALSE;
- switch (r)
- {
- default:
- break;
- case bfd_reloc_overflow:
- {
- const char *name;
- if (h != NULL)
- name = NULL;
- else
- {
- name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (name == NULL)
- break;
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
- (*info->callbacks->reloc_overflow) (info,
- (h ? &h->root : NULL),
- name,
- howto->name,
- (bfd_vma) 0,
- input_bfd,
- input_section,
- offset);
- }
- break;
- }
- }
- }
- #ifdef DEBUG
- fprintf (stderr, "\n");
- #endif
- return ret;
- }
- #define TARGET_BIG_SYM i370_elf32_vec
- #define TARGET_BIG_NAME "elf32-i370"
- #define ELF_ARCH bfd_arch_i370
- #define ELF_MACHINE_CODE EM_S370
- #ifdef EM_I370_OLD
- #define ELF_MACHINE_ALT1 EM_I370_OLD
- #endif
- #define ELF_MAXPAGESIZE 0x1000
- #define ELF_OSABI ELFOSABI_GNU
- #define elf_info_to_howto i370_elf_info_to_howto
- #define elf_backend_plt_not_loaded 1
- #define elf_backend_rela_normal 1
- #define bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_lookup
- #define bfd_elf32_bfd_reloc_name_lookup i370_elf_reloc_name_lookup
- #define bfd_elf32_bfd_set_private_flags i370_elf_set_private_flags
- #define bfd_elf32_bfd_merge_private_bfd_data i370_elf_merge_private_bfd_data
- #define elf_backend_relocate_section i370_elf_relocate_section
- /* Dynamic loader support is mostly broken; just enough here to be able to
- link glibc's ld.so without errors. */
- #define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections
- #define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections
- #define elf_backend_init_index_section _bfd_elf_init_1_index_section
- #define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections
- #define elf_backend_fake_sections i370_elf_fake_sections
- #define elf_backend_section_from_shdr i370_elf_section_from_shdr
- #define elf_backend_adjust_dynamic_symbol i370_elf_adjust_dynamic_symbol
- #define elf_backend_check_relocs i370_elf_check_relocs
- static int
- i370_noop (void)
- {
- return 1;
- }
- #define elf_backend_finish_dynamic_symbol \
- (bfd_boolean (*) \
- (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \
- Elf_Internal_Sym *)) i370_noop
- #include "elf32-target.h"
|