1  /* BFD COFF interfaces used outside of BFD.
       2     Copyright (C) 1990-2023 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);