2005-04-19 23:26:30 +02:00
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/* SPARC ELF specific backend routines.
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2007-03-26 14:23:03 +02:00
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Copyright 2005, 2007 Free Software Foundation, Inc.
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2005-04-19 23:26:30 +02:00
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2007-07-03 16:26:43 +02:00
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This file is part of BFD, the Binary File Descriptor library.
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2005-04-19 23:26:30 +02:00
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2007-07-03 16:26:43 +02:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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2005-04-19 23:26:30 +02:00
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2007-07-03 16:26:43 +02:00
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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2005-04-19 23:26:30 +02:00
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2007-07-03 16:26:43 +02:00
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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2005-04-19 23:26:30 +02:00
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#include "elf/common.h"
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#include "elf/internal.h"
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struct _bfd_sparc_elf_section_data
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{
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struct bfd_elf_section_data elf;
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unsigned int do_relax, reloc_count;
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};
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#define sec_do_relax(sec) \
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((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->do_relax
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#define canon_reloc_count(sec) \
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((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->reloc_count
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struct _bfd_sparc_elf_app_reg
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{
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unsigned char bind;
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unsigned short shndx;
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bfd *abfd;
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char *name;
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};
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/* Sparc ELF linker hash table. */
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struct _bfd_sparc_elf_link_hash_table
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{
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struct elf_link_hash_table elf;
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/* Short-cuts to get to dynamic linker sections. */
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asection *sgot;
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asection *srelgot;
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asection *splt;
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asection *srelplt;
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asection *sdynbss;
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asection *srelbss;
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union {
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bfd_signed_vma refcount;
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bfd_vma offset;
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} tls_ldm_got;
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/* Small local sym to section mapping cache. */
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struct sym_sec_cache sym_sec;
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bfd/
* config.bfd (sparc-*-vxworks*): New stanza.
* configure.in (bfd_elf32_sparc_vxworks_vec): New stanza.
(bfd_elf32_sparc_vec, bfd_elf64_sparc_vec): Add elf-vxworks.lo.
* configure: Regenerate.
* elf32-sparc.c: Include elf-vxworks.h.
(elf32_sparc_vxworks_link_hash_table_create: New.
(elf32_sparc_vxworks_final_write_processing): New.
(TARGET_BIG_SYM): Override for VxWorks.
(TARGET_BIG_NAME, ELF_MINPAGESIZE): Likewise.
(bfd_elf32_bfd_link_hash_table_create): Likewise.
(elf_backend_want_got_plt, elf_backend_plt_readonly): Likewise.
(elf_backend_got_header_size, elf_backend_add_symbol_hook): Likewise.
(elf_backend_link_output_symbol_hook): Likewise.
(elf_backend_emit_relocs): Likewise.
(elf_backend_final_write_processing, elf32_bed): Likewise.
* elfxx-sparc.c: Include libiberty.h and elf-vxworks.h.
(sparc_vxworks_exec_plt0_entry, sparc_vxworks_exec_plt_entry): New.
(sparc_vxworks_shared_plt0_entry, sparc_vxworks_shared_plt_entry): New.
(_bfd_sparc_elf_link_hash_table_create): Don't initialize
build_plt_entry here.
(create_got_section): Initialize sgotplt for VxWorks.
(_bfd_sparc_elf_create_dynamic_sections): Initialize build_plt_entry,
plt_header_size and plt_entry_size, with new VxWorks-specific settings.
Call elf_vxworks_create_dynamic_sections for VxWorks.
(allocate_dynrelocs): Use plt_header_size and plt_entry_size.
Allocate room for .got.plt and .rela.plt.unloaded entries on VxWorks.
(_bfd_sparc_elf_size_dynamic_sections): Don't allocate a nop in .plt
for VxWorks. Check for the .got.plt section.
(sparc_vxworks_build_plt_entry): New function.
(_bfd_sparc_elf_finish_dynamic_symbol): Add handling of VxWorks PLTs.
Don't make _GLOBAL_OFFSET_TABLE_ and _PROCEDURE_LINKAGE_TABLE_
absolute on VxWorks.
(sparc32_finish_dyn): Add special handling for DT_RELASZ
and DT_PLTGOT on VxWorks.
(sparc_vxworks_finish_exec_plt): New.
(sparc_vxworks_finish_shared_plt): New.
(_bfd_sparc_elf_finish_dynamic_sections): Call them.
Use plt_header_size and plt_entry_size.
* elfxx-sparc.h (_bfd_sparc_elf_link_hash_table): Add is_vxworks,
srelplt2, sgotplt, plt_header_size and plt_entry_size fields.
* Makefile.am (elfxx-sparc.lo): Depend on elf-vxworks.h.
(elf32-sparc.lo): Likewise.
* Makefile.in: Regenerate.
* targets.c (bfd_elf32_sparc_vxworks_vec): Declare.
(_bfd_target_vector): Add a pointer to it.
gas/
* config/tc-sparc.c (sparc_target_format): Handle TE_VXWORKS.
(GOTT_BASE, GOTT_INDEX): New.
(tc_gen_reloc): Don't alter relocations against GOTT_BASE and
GOTT_INDEX when generating VxWorks PIC.
* configure.tgt (sparc*-*-vxworks*): Remove this special case;
use the generic *-*-vxworks* stanza instead.
gas/testsuite/
* gas/sparc/vxworks-pic.s, gas/sparc/vxworks-pic.d: New test.
* gas/sparc/sparc.exp: Run it. Remove sparc*-*-vxworks* XFAILs.
ld/
* configure.tgt (sparc*-*-vxworks*): New stanza.
* emulparams/elf32_sparc_vxworks.sh: New file.
* Makefile.am (ALL_EMULATIONS): Add eelf32_sparc_vxworks.o.
(eelf32_sparc_vxworks.c): New rule.
* Makefile.in: Regenerate.
ld/testsuite/
* ld-sparc/vxworks1.dd, ld-sparc/vxworks1.ld, ld-sparc/vxworks1-lib.dd,
* ld-sparc/vxworks1-lib.nd, ld-sparc/vxworks1-lib.rd,
* ld-sparc/vxworks1-lib.s, ld-sparc/vxworks1.rd, ld-sparc/vxworks1.s,
* ld-sparc/vxworks1-static.d, ld-sparc/vxworks2.s,
* ld-sparc/vxworks2.sd, ld-sparc/vxworks2-static.sd: New tests.
* ld-sparc/sparc.exp: Run them.
2006-04-05 14:41:59 +02:00
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/* True if the target system is VxWorks. */
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int is_vxworks;
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/* The (unloaded but important) .rela.plt.unloaded section, for VxWorks. */
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asection *srelplt2;
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/* .got.plt is only used on VxWorks. */
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asection *sgotplt;
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2005-04-19 23:26:30 +02:00
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void (*put_word) (bfd *, bfd_vma, void *);
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bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
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bfd_vma (*r_symndx) (bfd_vma);
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int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *);
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2005-04-21 14:19:55 +02:00
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const char *dynamic_interpreter;
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2005-04-19 23:26:30 +02:00
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int dynamic_interpreter_size;
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unsigned int word_align_power;
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unsigned int align_power_max;
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bfd/
* config.bfd (sparc-*-vxworks*): New stanza.
* configure.in (bfd_elf32_sparc_vxworks_vec): New stanza.
(bfd_elf32_sparc_vec, bfd_elf64_sparc_vec): Add elf-vxworks.lo.
* configure: Regenerate.
* elf32-sparc.c: Include elf-vxworks.h.
(elf32_sparc_vxworks_link_hash_table_create: New.
(elf32_sparc_vxworks_final_write_processing): New.
(TARGET_BIG_SYM): Override for VxWorks.
(TARGET_BIG_NAME, ELF_MINPAGESIZE): Likewise.
(bfd_elf32_bfd_link_hash_table_create): Likewise.
(elf_backend_want_got_plt, elf_backend_plt_readonly): Likewise.
(elf_backend_got_header_size, elf_backend_add_symbol_hook): Likewise.
(elf_backend_link_output_symbol_hook): Likewise.
(elf_backend_emit_relocs): Likewise.
(elf_backend_final_write_processing, elf32_bed): Likewise.
* elfxx-sparc.c: Include libiberty.h and elf-vxworks.h.
(sparc_vxworks_exec_plt0_entry, sparc_vxworks_exec_plt_entry): New.
(sparc_vxworks_shared_plt0_entry, sparc_vxworks_shared_plt_entry): New.
(_bfd_sparc_elf_link_hash_table_create): Don't initialize
build_plt_entry here.
(create_got_section): Initialize sgotplt for VxWorks.
(_bfd_sparc_elf_create_dynamic_sections): Initialize build_plt_entry,
plt_header_size and plt_entry_size, with new VxWorks-specific settings.
Call elf_vxworks_create_dynamic_sections for VxWorks.
(allocate_dynrelocs): Use plt_header_size and plt_entry_size.
Allocate room for .got.plt and .rela.plt.unloaded entries on VxWorks.
(_bfd_sparc_elf_size_dynamic_sections): Don't allocate a nop in .plt
for VxWorks. Check for the .got.plt section.
(sparc_vxworks_build_plt_entry): New function.
(_bfd_sparc_elf_finish_dynamic_symbol): Add handling of VxWorks PLTs.
Don't make _GLOBAL_OFFSET_TABLE_ and _PROCEDURE_LINKAGE_TABLE_
absolute on VxWorks.
(sparc32_finish_dyn): Add special handling for DT_RELASZ
and DT_PLTGOT on VxWorks.
(sparc_vxworks_finish_exec_plt): New.
(sparc_vxworks_finish_shared_plt): New.
(_bfd_sparc_elf_finish_dynamic_sections): Call them.
Use plt_header_size and plt_entry_size.
* elfxx-sparc.h (_bfd_sparc_elf_link_hash_table): Add is_vxworks,
srelplt2, sgotplt, plt_header_size and plt_entry_size fields.
* Makefile.am (elfxx-sparc.lo): Depend on elf-vxworks.h.
(elf32-sparc.lo): Likewise.
* Makefile.in: Regenerate.
* targets.c (bfd_elf32_sparc_vxworks_vec): Declare.
(_bfd_target_vector): Add a pointer to it.
gas/
* config/tc-sparc.c (sparc_target_format): Handle TE_VXWORKS.
(GOTT_BASE, GOTT_INDEX): New.
(tc_gen_reloc): Don't alter relocations against GOTT_BASE and
GOTT_INDEX when generating VxWorks PIC.
* configure.tgt (sparc*-*-vxworks*): Remove this special case;
use the generic *-*-vxworks* stanza instead.
gas/testsuite/
* gas/sparc/vxworks-pic.s, gas/sparc/vxworks-pic.d: New test.
* gas/sparc/sparc.exp: Run it. Remove sparc*-*-vxworks* XFAILs.
ld/
* configure.tgt (sparc*-*-vxworks*): New stanza.
* emulparams/elf32_sparc_vxworks.sh: New file.
* Makefile.am (ALL_EMULATIONS): Add eelf32_sparc_vxworks.o.
(eelf32_sparc_vxworks.c): New rule.
* Makefile.in: Regenerate.
ld/testsuite/
* ld-sparc/vxworks1.dd, ld-sparc/vxworks1.ld, ld-sparc/vxworks1-lib.dd,
* ld-sparc/vxworks1-lib.nd, ld-sparc/vxworks1-lib.rd,
* ld-sparc/vxworks1-lib.s, ld-sparc/vxworks1.rd, ld-sparc/vxworks1.s,
* ld-sparc/vxworks1-static.d, ld-sparc/vxworks2.s,
* ld-sparc/vxworks2.sd, ld-sparc/vxworks2-static.sd: New tests.
* ld-sparc/sparc.exp: Run them.
2006-04-05 14:41:59 +02:00
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unsigned int plt_header_size;
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unsigned int plt_entry_size;
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2005-04-19 23:26:30 +02:00
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int bytes_per_word;
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int bytes_per_rela;
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int dtpoff_reloc;
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int dtpmod_reloc;
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int tpoff_reloc;
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struct _bfd_sparc_elf_app_reg app_regs [4];
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};
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/* Get the SPARC ELF linker hash table from a link_info structure. */
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#define _bfd_sparc_elf_hash_table(p) \
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((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash))
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extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
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(bfd *, bfd_reloc_code_real_type);
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2007-03-26 14:23:03 +02:00
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extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup
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(bfd *, const char *);
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2005-04-19 23:26:30 +02:00
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extern void _bfd_sparc_elf_info_to_howto
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(bfd *, arelent *, Elf_Internal_Rela *);
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extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr
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(unsigned int);
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extern bfd_boolean _bfd_sparc_elf_mkobject
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(bfd *);
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extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create
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(bfd *);
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extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern void _bfd_sparc_elf_copy_indirect_symbol
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2005-10-25 18:19:08 +02:00
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(struct bfd_link_info *,
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2005-04-19 23:26:30 +02:00
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struct elf_link_hash_entry *,
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struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_sparc_elf_check_relocs
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(bfd *, struct bfd_link_info *,
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asection *, const Elf_Internal_Rela *);
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extern asection *_bfd_sparc_elf_gc_mark_hook
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(asection *, struct bfd_link_info *,
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Elf_Internal_Rela *, struct elf_link_hash_entry *,
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Elf_Internal_Sym *);
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extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook
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(bfd *, struct bfd_link_info *,
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asection *, const Elf_Internal_Rela *);
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extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol
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(struct bfd_link_info *, struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym
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(bfd *, struct bfd_link_info *, asection *);
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extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_sparc_elf_new_section_hook
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(bfd *, asection *);
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extern bfd_boolean _bfd_sparc_elf_relax_section
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(bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
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extern bfd_boolean _bfd_sparc_elf_relocate_section
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(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
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extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol
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(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
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Elf_Internal_Sym *sym);
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extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_sparc_elf_object_p
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(bfd *);
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extern bfd_vma _bfd_sparc_elf_plt_sym_val
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(bfd_vma, const asection *, const arelent *);
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