binutils-gdb/gdb/gdb-stabs.h

/* Definitions for symbol-reading containing "stabs", for GDB.
   Copyright (C) 1992-2015 Free Software Foundation, Inc.
   Contributed by Cygnus Support.  Written by John Gilmore.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* This file exists to hold the common definitions required of most of
   the symbol-readers that end up using stabs.  The common use of
   these `symbol-type-specific' customizations of the generic data
   structures makes the stabs-oriented symbol readers able to call
   each others' functions as required.  */

#if !defined (GDBSTABS_H)
#define GDBSTABS_H

/* The tag used to find the DBX info attached to an objfile.  This is
   global because it is referenced by several modules.  */
extern const struct objfile_data *dbx_objfile_data_key;

/* The stab_section_info chain remembers info from the ELF symbol table,
   while psymtabs are being built for the other symbol tables in the 
   objfile.  It is destroyed at the complation of psymtab-reading.
   Any info that was used from it has been copied into psymtabs.  */

struct stab_section_info
  {
    char *filename;
    struct stab_section_info *next;
    int found;			/* Count of times it's found in searching.  */
    size_t num_sections;
    CORE_ADDR sections[1];
  };

/* Information is passed among various dbxread routines for accessing
   symbol files.  A pointer to this structure is kept in the objfile,
   using the dbx_objfile_data_key.  */

struct dbx_symfile_info
  {
    CORE_ADDR text_addr;	/* Start of text section */
    int text_size;		/* Size of text section */
    int symcount;		/* How many symbols are there in the file */
    char *stringtab;		/* The actual string table */
    int stringtab_size;		/* Its size */
    file_ptr symtab_offset;	/* Offset in file to symbol table */
    int symbol_size;		/* Bytes in a single symbol */
    struct stab_section_info *stab_section_info;    /* Section starting points
						       of the original .o files
						       before linking.  */

    /* See stabsread.h for the use of the following.  */
    struct header_file *header_files;
    int n_header_files;
    int n_allocated_header_files;

    /* Pointers to BFD sections.  These are used to speed up the building of
       minimal symbols.  */
    asection *text_section;
    asection *data_section;
    asection *bss_section;

    /* Pointer to the separate ".stab" section, if there is one.  */
    asection *stab_section;
  };

#define DBX_SYMFILE_INFO(o) \
  ((struct dbx_symfile_info *) objfile_data ((o), dbx_objfile_data_key))
#define DBX_TEXT_ADDR(o)	(DBX_SYMFILE_INFO(o)->text_addr)
#define DBX_TEXT_SIZE(o)	(DBX_SYMFILE_INFO(o)->text_size)
#define DBX_SYMCOUNT(o)		(DBX_SYMFILE_INFO(o)->symcount)
#define DBX_STRINGTAB(o)	(DBX_SYMFILE_INFO(o)->stringtab)
#define DBX_STRINGTAB_SIZE(o)	(DBX_SYMFILE_INFO(o)->stringtab_size)
#define DBX_SYMTAB_OFFSET(o)	(DBX_SYMFILE_INFO(o)->symtab_offset)
#define DBX_SYMBOL_SIZE(o)	(DBX_SYMFILE_INFO(o)->symbol_size)
#define DBX_TEXT_SECTION(o)	(DBX_SYMFILE_INFO(o)->text_section)
#define DBX_DATA_SECTION(o)	(DBX_SYMFILE_INFO(o)->data_section)
#define DBX_BSS_SECTION(o)	(DBX_SYMFILE_INFO(o)->bss_section)
#define DBX_STAB_SECTION(o)	(DBX_SYMFILE_INFO(o)->stab_section)

#endif /* GDBSTABS_H */