Subversion Repositories openrisc_2011-10-31

/* Private partial symbol table definitions.

   Copyright (C) 2009 Free Software Foundation, Inc.

   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/>.  */

#ifndef PSYMPRIV_H

#define PSYMPRIV_H

#include "psymtab.h"

/* A partial_symbol records the name, domain, and address class of

   symbols whose types we have not parsed yet.  For functions, it also

   contains their memory address, so we can find them from a PC value.

   Each partial_symbol sits in a partial_symtab, all of which are chained

   on a  partial symtab list and which points to the corresponding

   normal symtab once the partial_symtab has been referenced.  */

/* This structure is space critical.  See space comments at the top of

   symtab.h. */

struct partial_symbol

{

  /* The general symbol info required for all types of symbols. */

  struct general_symbol_info ginfo;

  /* Name space code.  */

  ENUM_BITFIELD(domain_enum_tag) domain : 6;

  /* Address class (for info_symbols) */

  ENUM_BITFIELD(address_class) aclass : 6;

};

#define PSYMBOL_DOMAIN(psymbol) (psymbol)->domain

#define PSYMBOL_CLASS(psymbol)          (psymbol)->aclass

/* Each source file that has not been fully read in is represented by

   a partial_symtab.  This contains the information on where in the

   executable the debugging symbols for a specific file are, and a

   list of names of global symbols which are located in this file.

   They are all chained on partial symtab lists.

   Even after the source file has been read into a symtab, the

   partial_symtab remains around.  They are allocated on an obstack,

   objfile_obstack.  */

struct partial_symtab

{

  /* Chain of all existing partial symtabs.  */

  struct partial_symtab *next;

  /* Name of the source file which this partial_symtab defines */

  char *filename;

  /* Full path of the source file.  NULL if not known.  */

  char *fullname;

  /* Directory in which it was compiled, or NULL if we don't know.  */

  char *dirname;

  /* Information about the object file from which symbols should be read.  */

  struct objfile *objfile;

  /* Set of relocation offsets to apply to each section.  */

  struct section_offsets *section_offsets;

  /* Range of text addresses covered by this file; texthigh is the

     beginning of the next section. */

  CORE_ADDR textlow;

  CORE_ADDR texthigh;

  /* Array of pointers to all of the partial_symtab's which this one

     depends on.  Since this array can only be set to previous or

     the current (?) psymtab, this dependency tree is guaranteed not

     to have any loops.  "depends on" means that symbols must be read

     for the dependencies before being read for this psymtab; this is

     for type references in stabs, where if foo.c includes foo.h, declarations

     in foo.h may use type numbers defined in foo.c.  For other debugging

     formats there may be no need to use dependencies.  */

  struct partial_symtab **dependencies;

  int number_of_dependencies;

  /* Global symbol list.  This list will be sorted after readin to

     improve access.  Binary search will be the usual method of

     finding a symbol within it. globals_offset is an integer offset

     within global_psymbols[].  */

  int globals_offset;

  int n_global_syms;

  /* Static symbol list.  This list will *not* be sorted after readin;

     to find a symbol in it, exhaustive search must be used.  This is

     reasonable because searches through this list will eventually

     lead to either the read in of a files symbols for real (assumed

     to take a *lot* of time; check) or an error (and we don't care

     how long errors take).  This is an offset and size within

     static_psymbols[].  */

  int statics_offset;

  int n_static_syms;

  /* Pointer to symtab eventually allocated for this source file, 0 if

     !readin or if we haven't looked for the symtab after it was readin.  */

  struct symtab *symtab;

  /* Pointer to function which will read in the symtab corresponding to

     this psymtab.  */

  void (*read_symtab) (struct partial_symtab *);

  /* Information that lets read_symtab() locate the part of the symbol table

     that this psymtab corresponds to.  This information is private to the

     format-dependent symbol reading routines.  For further detail examine

     the various symbol reading modules.  */

  void *read_symtab_private;

  /* Non-zero if the symtab corresponding to this psymtab has been readin */

  unsigned char readin;

};

extern void sort_pst_symbols (struct partial_symtab *);

/* Traverse all psymtabs in one objfile.  */

#define ALL_OBJFILE_PSYMTABS(objfile, p) \

    for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next)

/* Traverse all psymtabs in all objfiles.  */

#define ALL_PSYMTABS(objfile, p) \

  ALL_OBJFILES (objfile)         \

    ALL_OBJFILE_PSYMTABS (objfile, p)

#endif /* PSYMPRIV_H */