1 /* SPARC ELF specific backend routines. 2 Copyright 2005, 2007 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-cuts to get to dynamic linker sections. */ 50 asection *sgot; 51 asection *srelgot; 52 asection *splt; 53 asection *srelplt; 54 asection *sdynbss; 55 asection *srelbss; 56 57 union { 58 bfd_signed_vma refcount; 59 bfd_vma offset; 60 } tls_ldm_got; 61 62 /* Small local sym to section mapping cache. */ 63 struct sym_sec_cache sym_sec; 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 /* .got.plt is only used on VxWorks. */ 72 asection *sgotplt; 73 74 void (*put_word) (bfd *, bfd_vma, void *); 75 bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma); 76 bfd_vma (*r_symndx) (bfd_vma); 77 int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *); 78 const char *dynamic_interpreter; 79 int dynamic_interpreter_size; 80 unsigned int word_align_power; 81 unsigned int align_power_max; 82 unsigned int plt_header_size; 83 unsigned int plt_entry_size; 84 int bytes_per_word; 85 int bytes_per_rela; 86 int dtpoff_reloc; 87 int dtpmod_reloc; 88 int tpoff_reloc; 89 90 struct _bfd_sparc_elf_app_reg app_regs [4]; 91 }; 92 93 /* Get the SPARC ELF linker hash table from a link_info structure. */ 94 95 #define _bfd_sparc_elf_hash_table(p) \ 96 ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash)) 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 bfd_boolean _bfd_sparc_elf_create_dynamic_sections 111 (bfd *, struct bfd_link_info *); 112 extern void _bfd_sparc_elf_copy_indirect_symbol 113 (struct bfd_link_info *, 114 struct elf_link_hash_entry *, 115 struct elf_link_hash_entry *); 116 extern bfd_boolean _bfd_sparc_elf_check_relocs 117 (bfd *, struct bfd_link_info *, 118 asection *, const Elf_Internal_Rela *); 119 extern asection *_bfd_sparc_elf_gc_mark_hook 120 (asection *, struct bfd_link_info *, 121 Elf_Internal_Rela *, struct elf_link_hash_entry *, 122 Elf_Internal_Sym *); 123 extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook 124 (bfd *, struct bfd_link_info *, 125 asection *, const Elf_Internal_Rela *); 126 extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol 127 (struct bfd_link_info *, struct elf_link_hash_entry *); 128 extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym 129 (bfd *, struct bfd_link_info *, asection *); 130 extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections 131 (bfd *, struct bfd_link_info *); 132 extern bfd_boolean _bfd_sparc_elf_new_section_hook 133 (bfd *, asection *); 134 extern bfd_boolean _bfd_sparc_elf_relax_section 135 (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *); 136 extern bfd_boolean _bfd_sparc_elf_relocate_section 137 (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 138 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); 139 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol 140 (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 141 Elf_Internal_Sym *sym); 142 extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections 143 (bfd *, struct bfd_link_info *); 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