1 /* SPARC ELF specific backend routines. 2 Copyright (C) 2005-2017 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-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 /* Small local sym cache. */ 59 struct sym_cache sym_cache; 60 61 /* Used by local STT_GNU_IFUNC symbols. */ 62 htab_t loc_hash_table; 63 void *loc_hash_memory; 64 65 /* True if the target system is VxWorks. */ 66 int is_vxworks; 67 68 /* The (unloaded but important) .rela.plt.unloaded section, for VxWorks. */ 69 asection *srelplt2; 70 71 void (*put_word) (bfd *, bfd_vma, void *); 72 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); 73 bfd_vma (*r_symndx) (bfd_vma); 74 int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *); 75 const char *dynamic_interpreter; 76 int dynamic_interpreter_size; 77 unsigned int word_align_power; 78 unsigned int align_power_max; 79 unsigned int plt_header_size; 80 unsigned int plt_entry_size; 81 int bytes_per_word; 82 int bytes_per_rela; 83 int dtpoff_reloc; 84 int dtpmod_reloc; 85 int tpoff_reloc; 86 87 struct _bfd_sparc_elf_app_reg app_regs [4]; 88 }; 89 90 /* Get the SPARC ELF linker hash table from a link_info structure. */ 91 92 #define _bfd_sparc_elf_hash_table(p) \ 93 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ 94 == SPARC_ELF_DATA ? ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash)) : NULL) 95 96 extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup 97 (bfd *, bfd_reloc_code_real_type); 98 extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup 99 (bfd *, const char *); 100 extern void _bfd_sparc_elf_info_to_howto 101 (bfd *, arelent *, Elf_Internal_Rela *); 102 extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr 103 (unsigned int); 104 extern bfd_boolean _bfd_sparc_elf_mkobject 105 (bfd *); 106 extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create 107 (bfd *); 108 extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections 109 (bfd *, struct bfd_link_info *); 110 extern void _bfd_sparc_elf_copy_indirect_symbol 111 (struct bfd_link_info *, 112 struct elf_link_hash_entry *, 113 struct elf_link_hash_entry *); 114 extern bfd_boolean _bfd_sparc_elf_check_relocs 115 (bfd *, struct bfd_link_info *, 116 asection *, const Elf_Internal_Rela *); 117 extern asection *_bfd_sparc_elf_gc_mark_hook 118 (asection *, struct bfd_link_info *, 119 Elf_Internal_Rela *, struct elf_link_hash_entry *, 120 Elf_Internal_Sym *); 121 extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook 122 (bfd *, struct bfd_link_info *, 123 asection *, const Elf_Internal_Rela *); 124 extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol 125 (struct bfd_link_info *, struct elf_link_hash_entry *); 126 extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym 127 (bfd *, struct bfd_link_info *, asection *); 128 extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections 129 (bfd *, struct bfd_link_info *); 130 extern bfd_boolean _bfd_sparc_elf_new_section_hook 131 (bfd *, asection *); 132 extern bfd_boolean _bfd_sparc_elf_relax_section 133 (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *); 134 extern bfd_boolean _bfd_sparc_elf_relocate_section 135 (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 136 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); 137 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol 138 (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 139 Elf_Internal_Sym *sym); 140 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections 141 (bfd *, struct bfd_link_info *); 142 extern bfd_boolean _bfd_sparc_elf_fixup_symbol 143 (struct bfd_link_info *, struct elf_link_hash_entry *); 144 extern bfd_boolean _bfd_sparc_elf_object_p 145 (bfd *); 146 extern bfd_vma _bfd_sparc_elf_plt_sym_val 147 (bfd_vma, const asection *, const arelent *); 148 extern bfd_boolean _bfd_sparc_elf_merge_private_bfd_data 149 (bfd *, struct bfd_link_info *); 150