1/* SPARC ELF specific backend routines.
2   Copyright (C) 2005-2020 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
24struct _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
35struct _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
45struct _bfd_sparc_elf_link_hash_table
46{
47  struct elf_link_hash_table elf;
48
49  /* Short-cut to get to dynamic linker sections.  */
50  asection *interp;
51
52  union
53  {
54    bfd_signed_vma refcount;
55    bfd_vma offset;
56  } tls_ldm_got;
57
58  /* Used by local STT_GNU_IFUNC symbols.  */
59  htab_t loc_hash_table;
60  void *loc_hash_memory;
61
62  /* The (unloaded but important) .rela.plt.unloaded section, for VxWorks.  */
63  asection *srelplt2;
64
65  void (*put_word) (bfd *, bfd_vma, void *);
66  bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
67  bfd_vma (*r_symndx) (bfd_vma);
68  int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *);
69  const char *dynamic_interpreter;
70  int dynamic_interpreter_size;
71  unsigned int word_align_power;
72  unsigned int align_power_max;
73  unsigned int plt_header_size;
74  unsigned int plt_entry_size;
75  int bytes_per_word;
76  int bytes_per_rela;
77  int dtpoff_reloc;
78  int dtpmod_reloc;
79  int tpoff_reloc;
80
81  struct _bfd_sparc_elf_app_reg app_regs [4];
82};
83
84/* Get the SPARC ELF linker hash table from a link_info structure.  */
85
86#define _bfd_sparc_elf_hash_table(p) \
87  ((is_elf_hash_table ((p)->hash)					\
88    && elf_hash_table_id (elf_hash_table (p)) == SPARC_ELF_DATA)	\
89   ? (struct _bfd_sparc_elf_link_hash_table *) (p)->hash : NULL)
90
91extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
92  (bfd *, bfd_reloc_code_real_type);
93extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup
94  (bfd *, const char *);
95extern bfd_boolean _bfd_sparc_elf_info_to_howto
96  (bfd *, arelent *, Elf_Internal_Rela *);
97extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr
98  (bfd*, unsigned int);
99extern bfd_boolean _bfd_sparc_elf_mkobject
100  (bfd *);
101extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create
102  (bfd *);
103extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections
104  (bfd *, struct bfd_link_info *);
105extern void _bfd_sparc_elf_copy_indirect_symbol
106  (struct bfd_link_info *,
107   struct elf_link_hash_entry *,
108   struct elf_link_hash_entry *);
109extern bfd_boolean _bfd_sparc_elf_check_relocs
110  (bfd *, struct bfd_link_info *,
111   asection *, const Elf_Internal_Rela *);
112extern asection *_bfd_sparc_elf_gc_mark_hook
113  (asection *, struct bfd_link_info *,
114   Elf_Internal_Rela *, struct elf_link_hash_entry *,
115   Elf_Internal_Sym *);
116extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol
117  (struct bfd_link_info *, struct elf_link_hash_entry *);
118extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym
119  (bfd *, struct bfd_link_info *, asection *);
120extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections
121  (bfd *, struct bfd_link_info *);
122extern bfd_boolean _bfd_sparc_elf_new_section_hook
123  (bfd *, asection *);
124extern bfd_boolean _bfd_sparc_elf_relax_section
125  (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
126extern bfd_boolean _bfd_sparc_elf_relocate_section
127  (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
128   Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
129extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol
130  (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
131   Elf_Internal_Sym *sym);
132extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections
133  (bfd *, struct bfd_link_info *);
134extern bfd_boolean _bfd_sparc_elf_fixup_symbol
135  (struct bfd_link_info *, struct elf_link_hash_entry *);
136extern bfd_boolean _bfd_sparc_elf_object_p
137  (bfd *);
138extern bfd_vma _bfd_sparc_elf_plt_sym_val
139  (bfd_vma, const asection *, const arelent *);
140extern bfd_boolean _bfd_sparc_elf_merge_private_bfd_data
141  (bfd *, struct bfd_link_info *);
142