1/* SPARC ELF specific backend routines.
2   Copyright 2005, 2007 Free Software Foundation, Inc.
3
4This file is part of BFD, the Binary File Descriptor library.
5
6This program is free software; you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published by
8the Free Software Foundation; either version 2 of the License, or
9(at your option) any later version.
10
11This program is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14GNU General Public License for more details.
15
16You should have received a copy of the GNU General Public License
17along with this program; if not, write to the Free Software
18Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
19
20#include "elf/common.h"
21#include "elf/internal.h"
22
23struct _bfd_sparc_elf_section_data
24{
25  struct bfd_elf_section_data elf;
26  unsigned int do_relax, reloc_count;
27};
28
29#define sec_do_relax(sec) \
30  ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->do_relax
31#define canon_reloc_count(sec) \
32  ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->reloc_count
33
34struct _bfd_sparc_elf_app_reg
35{
36  unsigned char bind;
37  unsigned short shndx;
38  bfd *abfd;
39  char *name;
40};
41
42/* Sparc ELF linker hash table.  */
43
44struct _bfd_sparc_elf_link_hash_table
45{
46  struct elf_link_hash_table elf;
47
48  /* Short-cuts to get to dynamic linker sections.  */
49  asection *sgot;
50  asection *srelgot;
51  asection *splt;
52  asection *srelplt;
53  asection *sdynbss;
54  asection *srelbss;
55
56  union {
57    bfd_signed_vma refcount;
58    bfd_vma offset;
59  } tls_ldm_got;
60
61  /* Small local sym to section mapping cache.  */
62  struct sym_sec_cache sym_sec;
63
64  /* True if the target system is VxWorks.  */
65  int is_vxworks;
66
67  /* The (unloaded but important) .rela.plt.unloaded section, for VxWorks.  */
68  asection *srelplt2;
69
70  /* .got.plt is only used on VxWorks.  */
71  asection *sgotplt;
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  ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash))
96
97extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
98  (bfd *, bfd_reloc_code_real_type);
99extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup
100  (bfd *, const char *);
101extern void _bfd_sparc_elf_info_to_howto
102  (bfd *, arelent *, Elf_Internal_Rela *);
103extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr
104  (unsigned int);
105extern bfd_boolean _bfd_sparc_elf_mkobject
106  (bfd *);
107extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create
108  (bfd *);
109extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections
110  (bfd *, struct bfd_link_info *);
111extern void _bfd_sparc_elf_copy_indirect_symbol
112  (struct bfd_link_info *,
113   struct elf_link_hash_entry *,
114   struct elf_link_hash_entry *);
115extern bfd_boolean _bfd_sparc_elf_check_relocs
116  (bfd *, struct bfd_link_info *,
117   asection *, const Elf_Internal_Rela *);
118extern 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 *);
122extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook
123  (bfd *, struct bfd_link_info *,
124   asection *, const Elf_Internal_Rela *);
125extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol
126  (struct bfd_link_info *, struct elf_link_hash_entry *);
127extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym
128  (bfd *, struct bfd_link_info *, asection *);
129extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections
130  (bfd *, struct bfd_link_info *);
131extern bfd_boolean _bfd_sparc_elf_new_section_hook
132  (bfd *, asection *);
133extern bfd_boolean _bfd_sparc_elf_relax_section
134  (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
135extern 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 **);
138extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol
139  (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
140   Elf_Internal_Sym *sym);
141extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections
142  (bfd *, struct bfd_link_info *);
143extern bfd_boolean _bfd_sparc_elf_object_p
144  (bfd *);
145extern bfd_vma _bfd_sparc_elf_plt_sym_val
146  (bfd_vma, const asection *, const arelent *);
147