1 /* BFD COFF interfaces used outside of BFD. 2 Copyright (C) 1990-2020 Free Software Foundation, Inc. 3 Written by Cygnus Support. 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 /* This structure is used for a comdat section, as in PE. A comdat 23 section is associated with a particular symbol. When the linker 24 sees a comdat section, it keeps only one of the sections with a 25 given name and associated with a given symbol. */ 26 27 struct coff_comdat_info 28 { 29 /* The name of the symbol associated with a comdat section. */ 30 const char *name; 31 32 /* The local symbol table index of the symbol associated with a 33 comdat section. This is only meaningful to the object file format 34 specific code; it is not an index into the list returned by 35 bfd_canonicalize_symtab. */ 36 long symbol; 37 }; 38 39 /* The used_by_bfd field of a section may be set to a pointer to this 40 structure. */ 41 42 struct coff_section_tdata 43 { 44 /* The relocs, swapped into COFF internal form. This may be NULL. */ 45 struct internal_reloc *relocs; 46 /* If this is TRUE, the relocs entry may not be freed. */ 47 bfd_boolean keep_relocs; 48 /* The section contents. This may be NULL. */ 49 bfd_byte *contents; 50 /* If this is TRUE, the contents entry may not be freed. */ 51 bfd_boolean keep_contents; 52 /* Information cached by coff_find_nearest_line. */ 53 bfd_boolean saved_bias; 54 bfd_signed_vma bias; 55 bfd_vma offset; 56 unsigned int i; 57 const char *function; 58 /* Optional information about a COMDAT entry; NULL if not COMDAT. */ 59 struct coff_comdat_info *comdat; 60 int line_base; 61 /* A pointer used for .stab linking optimizations. */ 62 void * stab_info; 63 /* Available for individual backends. */ 64 void * tdata; 65 }; 66 67 /* An accessor macro for the coff_section_tdata structure. */ 68 #define coff_section_data(abfd, sec) \ 69 ((struct coff_section_tdata *) (sec)->used_by_bfd) 70 71 #define bfd_coff_get_comdat_section(abfd, sec) \ 72 ((bfd_get_flavour (abfd) == bfd_target_coff_flavour \ 73 && coff_section_data (abfd, sec) != NULL) \ 74 ? coff_section_data (abfd, sec)->comdat : NULL) 75 76 #define coff_symbol_from(symbol) \ 77 ((bfd_family_coff (bfd_asymbol_bfd (symbol)) \ 78 && bfd_asymbol_bfd (symbol)->tdata.coff_obj_data) \ 79 ? (coff_symbol_type *) (symbol) : NULL) 80 81 struct internal_syment; 82 union internal_auxent; 83 84 extern bfd_boolean bfd_coff_get_syment 85 (bfd *, struct bfd_symbol *, struct internal_syment *); 86 87 extern bfd_boolean bfd_coff_get_auxent 88 (bfd *, struct bfd_symbol *, int, union internal_auxent *); 89 90 extern bfd_boolean bfd_coff_set_symbol_class 91 (bfd *, struct bfd_symbol *, unsigned int); 92