1 /* BFD COFF interfaces used outside of BFD. 2 Copyright (C) 1990-2024 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 /* The section contents. This may be NULL. */ 47 bfd_byte *contents; 48 /* Information cached by coff_find_nearest_line. */ 49 bool saved_bias; 50 bfd_signed_vma bias; 51 bfd_vma offset; 52 unsigned int i; 53 const char *function; 54 /* Optional information about a COMDAT entry; NULL if not COMDAT. */ 55 struct coff_comdat_info *comdat; 56 int line_base; 57 /* A pointer used for .stab linking optimizations. */ 58 void * stab_info; 59 /* Available for individual backends. */ 60 void * tdata; 61 }; 62 63 /* An accessor macro for the coff_section_tdata structure. */ 64 #define coff_section_data(abfd, sec) \ 65 ((struct coff_section_tdata *) (sec)->used_by_bfd) 66 67 #define bfd_coff_get_comdat_section(abfd, sec) \ 68 ((bfd_get_flavour (abfd) == bfd_target_coff_flavour \ 69 && coff_section_data (abfd, sec) != NULL) \ 70 ? coff_section_data (abfd, sec)->comdat : NULL) 71 72 #define coff_symbol_from(symbol) \ 73 ((bfd_family_coff (bfd_asymbol_bfd (symbol)) \ 74 && bfd_asymbol_bfd (symbol)->tdata.coff_obj_data) \ 75 ? (coff_symbol_type *) (symbol) : NULL) 76 77 struct internal_syment; 78 union internal_auxent; 79 80 extern bool bfd_coff_get_syment 81 (bfd *, struct bfd_symbol *, struct internal_syment *); 82 83 extern bool bfd_coff_get_auxent 84 (bfd *, struct bfd_symbol *, int, union internal_auxent *); 85 86 extern bool bfd_coff_set_symbol_class 87 (bfd *, struct bfd_symbol *, unsigned int); 88