Home | History | Annotate | Download | only in bfd
      1 /* SPARC ELF specific backend routines.
      2    Copyright (C) 2005-2014 Free Software Foundation, Inc.
      3 
      4    This file is part of BFD, the Binary File Descriptor library.
      5 
      6    This program is free software; you can redistribute it and/or modify
      7    it under the terms of the GNU General Public License as published by
      8    the Free Software Foundation; either version 3 of the License, or
      9    (at your option) any later version.
     10 
     11    This program is distributed in the hope that it will be useful,
     12    but WITHOUT ANY WARRANTY; without even the implied warranty of
     13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     14    GNU General Public License for more details.
     15 
     16    You should have received a copy of the GNU General Public License
     17    along with this program; if not, write to the Free Software
     18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     19    MA 02110-1301, USA.  */
     20 
     21 #include "elf/common.h"
     22 #include "elf/internal.h"
     23 
     24 struct _bfd_sparc_elf_section_data
     25 {
     26   struct bfd_elf_section_data elf;
     27   unsigned int do_relax, reloc_count;
     28 };
     29 
     30 #define sec_do_relax(sec) \
     31   ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->do_relax
     32 #define canon_reloc_count(sec) \
     33   ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->reloc_count
     34 
     35 struct _bfd_sparc_elf_app_reg
     36 {
     37   unsigned char bind;
     38   unsigned short shndx;
     39   bfd *abfd;
     40   char *name;
     41 };
     42 
     43 /* Sparc ELF linker hash table.  */
     44 
     45 struct _bfd_sparc_elf_link_hash_table
     46 {
     47   struct elf_link_hash_table elf;
     48 
     49   /* Short-cuts to get to dynamic linker sections.  */
     50   asection *sdynbss;
     51   asection *srelbss;
     52 
     53   union
     54   {
     55     bfd_signed_vma refcount;
     56     bfd_vma offset;
     57   } tls_ldm_got;
     58 
     59   /* Small local sym cache.  */
     60   struct sym_cache sym_cache;
     61 
     62   /* Used by local STT_GNU_IFUNC symbols.  */
     63   htab_t loc_hash_table;
     64   void *loc_hash_memory;
     65 
     66   /* True if the target system is VxWorks.  */
     67   int is_vxworks;
     68 
     69   /* The (unloaded but important) .rela.plt.unloaded section, for VxWorks.  */
     70   asection *srelplt2;
     71 
     72   void (*put_word) (bfd *, bfd_vma, void *);
     73   bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
     74   bfd_vma (*r_symndx) (bfd_vma);
     75   int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *);
     76   const char *dynamic_interpreter;
     77   int dynamic_interpreter_size;
     78   unsigned int word_align_power;
     79   unsigned int align_power_max;
     80   unsigned int plt_header_size;
     81   unsigned int plt_entry_size;
     82   int bytes_per_word;
     83   int bytes_per_rela;
     84   int dtpoff_reloc;
     85   int dtpmod_reloc;
     86   int tpoff_reloc;
     87 
     88   struct _bfd_sparc_elf_app_reg app_regs [4];
     89 };
     90 
     91 /* Get the SPARC ELF linker hash table from a link_info structure.  */
     92 
     93 #define _bfd_sparc_elf_hash_table(p) \
     94   (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
     95   == SPARC_ELF_DATA ? ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash)) : NULL)
     96 
     97 extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
     98   (bfd *, bfd_reloc_code_real_type);
     99 extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup
    100   (bfd *, const char *);
    101 extern void _bfd_sparc_elf_info_to_howto
    102   (bfd *, arelent *, Elf_Internal_Rela *);
    103 extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr
    104   (unsigned int);
    105 extern bfd_boolean _bfd_sparc_elf_mkobject
    106   (bfd *);
    107 extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create
    108   (bfd *);
    109 extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections
    110   (bfd *, struct bfd_link_info *);
    111 extern void _bfd_sparc_elf_copy_indirect_symbol
    112   (struct bfd_link_info *,
    113    struct elf_link_hash_entry *,
    114    struct elf_link_hash_entry *);
    115 extern bfd_boolean _bfd_sparc_elf_check_relocs
    116   (bfd *, struct bfd_link_info *,
    117    asection *, const Elf_Internal_Rela *);
    118 extern asection *_bfd_sparc_elf_gc_mark_hook
    119   (asection *, struct bfd_link_info *,
    120    Elf_Internal_Rela *, struct elf_link_hash_entry *,
    121    Elf_Internal_Sym *);
    122 extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook
    123   (bfd *, struct bfd_link_info *,
    124    asection *, const Elf_Internal_Rela *);
    125 extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol
    126   (struct bfd_link_info *, struct elf_link_hash_entry *);
    127 extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym
    128   (bfd *, struct bfd_link_info *, asection *);
    129 extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections
    130   (bfd *, struct bfd_link_info *);
    131 extern bfd_boolean _bfd_sparc_elf_new_section_hook
    132   (bfd *, asection *);
    133 extern bfd_boolean _bfd_sparc_elf_relax_section
    134   (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
    135 extern bfd_boolean _bfd_sparc_elf_relocate_section
    136   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
    137    Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
    138 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol
    139   (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
    140    Elf_Internal_Sym *sym);
    141 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections
    142   (bfd *, struct bfd_link_info *);
    143 extern bfd_boolean _bfd_sparc_elf_object_p
    144   (bfd *);
    145 extern bfd_vma _bfd_sparc_elf_plt_sym_val
    146   (bfd_vma, const asection *, const arelent *);
    147 extern bfd_boolean _bfd_sparc_elf_merge_private_bfd_data
    148   (bfd *, bfd *);
    149