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