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elfxx-sparc.h revision 1.1.1.2.8.1
      1 /* SPARC ELF specific backend routines.
      2    Copyright 2005, 2006, 2007, 2009, 2010, 2011
      3    Free Software Foundation, Inc.
      4 
      5    This file is part of BFD, the Binary File Descriptor library.
      6 
      7    This program is free software; you can redistribute it and/or modify
      8    it under the terms of the GNU General Public License as published by
      9    the Free Software Foundation; either version 3 of the License, or
     10    (at your option) any later version.
     11 
     12    This program is distributed in the hope that it will be useful,
     13    but WITHOUT ANY WARRANTY; without even the implied warranty of
     14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     15    GNU General Public License for more details.
     16 
     17    You should have received a copy of the GNU General Public License
     18    along with this program; if not, write to the Free Software
     19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     20    MA 02110-1301, USA.  */
     21 
     22 #include "elf/common.h"
     23 #include "elf/internal.h"
     24 
     25 struct _bfd_sparc_elf_section_data
     26 {
     27   struct bfd_elf_section_data elf;
     28   unsigned int do_relax, reloc_count;
     29 };
     30 
     31 #define sec_do_relax(sec) \
     32   ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->do_relax
     33 #define canon_reloc_count(sec) \
     34   ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->reloc_count
     35 
     36 struct _bfd_sparc_elf_app_reg
     37 {
     38   unsigned char bind;
     39   unsigned short shndx;
     40   bfd *abfd;
     41   char *name;
     42 };
     43 
     44 /* Sparc ELF linker hash table.  */
     45 
     46 struct _bfd_sparc_elf_link_hash_table
     47 {
     48   struct elf_link_hash_table elf;
     49 
     50   /* Short-cuts to get to dynamic linker sections.  */
     51   asection *sdynbss;
     52   asection *srelbss;
     53 
     54   union
     55   {
     56     bfd_signed_vma refcount;
     57     bfd_vma offset;
     58   } tls_ldm_got;
     59 
     60   /* Small local sym cache.  */
     61   struct sym_cache sym_cache;
     62 
     63   /* Used by local STT_GNU_IFUNC symbols.  */
     64   htab_t loc_hash_table;
     65   void *loc_hash_memory;
     66 
     67   /* True if the target system is VxWorks.  */
     68   int is_vxworks;
     69 
     70   /* The (unloaded but important) .rela.plt.unloaded section, for VxWorks.  */
     71   asection *srelplt2;
     72 
     73   void (*put_word) (bfd *, bfd_vma, void *);
     74   bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
     75   bfd_vma (*r_symndx) (bfd_vma);
     76   int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *);
     77   const char *dynamic_interpreter;
     78   int dynamic_interpreter_size;
     79   unsigned int word_align_power;
     80   unsigned int align_power_max;
     81   unsigned int plt_header_size;
     82   unsigned int plt_entry_size;
     83   int bytes_per_word;
     84   int bytes_per_rela;
     85   int dtpoff_reloc;
     86   int dtpmod_reloc;
     87   int tpoff_reloc;
     88 
     89   struct _bfd_sparc_elf_app_reg app_regs [4];
     90 };
     91 
     92 /* Get the SPARC ELF linker hash table from a link_info structure.  */
     93 
     94 #define _bfd_sparc_elf_hash_table(p) \
     95   (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
     96   == SPARC_ELF_DATA ? ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash)) : NULL)
     97 
     98 extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
     99   (bfd *, bfd_reloc_code_real_type);
    100 extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup
    101   (bfd *, const char *);
    102 extern void _bfd_sparc_elf_info_to_howto
    103   (bfd *, arelent *, Elf_Internal_Rela *);
    104 extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr
    105   (unsigned int);
    106 extern bfd_boolean _bfd_sparc_elf_mkobject
    107   (bfd *);
    108 extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create
    109   (bfd *);
    110 extern void _bfd_sparc_elf_link_hash_table_free
    111   (struct bfd_link_hash_table *);
    112 extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections
    113   (bfd *, struct bfd_link_info *);
    114 extern void _bfd_sparc_elf_copy_indirect_symbol
    115   (struct bfd_link_info *,
    116    struct elf_link_hash_entry *,
    117    struct elf_link_hash_entry *);
    118 extern bfd_boolean _bfd_sparc_elf_check_relocs
    119   (bfd *, struct bfd_link_info *,
    120    asection *, const Elf_Internal_Rela *);
    121 extern asection *_bfd_sparc_elf_gc_mark_hook
    122   (asection *, struct bfd_link_info *,
    123    Elf_Internal_Rela *, struct elf_link_hash_entry *,
    124    Elf_Internal_Sym *);
    125 extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook
    126   (bfd *, struct bfd_link_info *,
    127    asection *, const Elf_Internal_Rela *);
    128 extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol
    129   (struct bfd_link_info *, struct elf_link_hash_entry *);
    130 extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym
    131   (bfd *, struct bfd_link_info *, asection *);
    132 extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections
    133   (bfd *, struct bfd_link_info *);
    134 extern bfd_boolean _bfd_sparc_elf_new_section_hook
    135   (bfd *, asection *);
    136 extern bfd_boolean _bfd_sparc_elf_relax_section
    137   (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
    138 extern bfd_boolean _bfd_sparc_elf_relocate_section
    139   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
    140    Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
    141 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol
    142   (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
    143    Elf_Internal_Sym *sym);
    144 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections
    145   (bfd *, struct bfd_link_info *);
    146 extern bfd_boolean _bfd_sparc_elf_object_p
    147   (bfd *);
    148 extern bfd_vma _bfd_sparc_elf_plt_sym_val
    149   (bfd_vma, const asection *, const arelent *);
    150 extern bfd_boolean _bfd_sparc_elf_merge_private_bfd_data
    151   (bfd *, bfd *);
    152