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/* Definitions for reading symbol files into GDB.
Copyright (C) 1990 Free Software Foundation, Inc.
This file is part of GDB.
GDB 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 1, or (at your option)
any later version.
GDB 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 GDB; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This file requires that you first include "bfd.h". */
/* Data structures and function definitions for dealing with
symbol table reading from files. */
/* Structure to keep track of symbol reading functions for various
object file types. */
struct sym_fns {
/* sym_name
is the name, or name prefix, of the BFD "target type" that this
set of functions handles. E.g. "a.out" or "sunOs" or "coff". */
char *sym_name;
/* sym_namelen
counts how many bytes of sym_name should be checked against the
BFD target type of the file being read. If an exact match is
desired, specify the number of characters in sym_name plus 1 for the
NUL. If a prefix match is desired, specify the number of characters in
sym_name. */
int sym_namelen;
/* sym_new_init
initializes anything that is global to the entire
symbol table. It is called e.g. during symbol_file_command, when
we begin debugging an entirely new program. */
void (*sym_new_init) ();
/* sym_init (sf)
reads any initial information from a symbol file, and
initializes the struct sym_fns SF in preparation for sym_read().
It is called every time we read a symbol file for any reason. */
void (*sym_init) ();
/* sym_read (sf, addr, mainline)
reads a symbol file into a psymtab (or possibly a symtab).
SF is the struct sym_fns that sym_init initialized. ADDR
is the offset between the file's specified start address and
its true address in memory. MAINLINE is 1 if this is the
main symbol table being read, and 0 if a secondary
symbol file (e.g. shared library or dynamically loaded file)
is being read. */
void (*sym_read) ();
/* sym_discard (sf)
discards any cached information from SF or elsewhere, that
was saved as part of reading a single symbol file. */
void (*sym_discard) ();
/* sym_bfd
is the accessor for the symbol file being read. */
bfd *sym_bfd;
/* sym_private
is where information can be shared among sym_init, sym_read and
sym_discard. It is typically a pointer to malloc'd memory. */
char *sym_private; /* Should be void * */
/* next
finds the next struct sym_fns. They are allocated and initialized
in whatever module implements the functions pointed to; an
initializer calls add_symtab_fns to add them to the global chain. */
struct sym_fns *next;
};
/* Functions */
extern int free_named_symtabs ();
extern int fill_in_vptr_fieldno ();
extern void add_symtab_fns ();
/* Functions for dealing with the misc "function" vector, really a misc
address<->symbol mapping vector for things we don't have debug symbols
for. */
extern void init_misc_bunches ();
extern void prim_record_misc_function ();
extern void discard_misc_bunches ();
extern void condense_misc_bunches ();
/* Sorting your symbols for fast lookup or alphabetical printing. */
extern void sort_block_syms ();
extern void sort_symtab_syms ();
extern void sort_all_symtab_syms ();
extern void sort_block_syms ();
/* Make a copy of the string at PTR with SIZE characters in the symbol obstack
(and add a null character at the end in the copy).
Returns the address of the copy. */
extern char *obsavestring ();
/* Concatenate strings S1, S2 and S3; return the new string.
Space is found in the symbol_obstack. */
extern char *obconcat ();
/* Variables */
/* File name symbols were loaded from. */
extern char *symfile;
/* The modification date of the file when they were loaded. */
extern int symfile_mtime;
/* The BFD for this file -- only good while we're actively reading
symbols into a psymtab or a symtab. */
static bfd *symfile_bfd;
/* Vectors of all partial symbols read in from file. */
extern struct psymbol_allocation_list {
struct partial_symbol *list, *next;
int size;
} global_psymbols, static_psymbols;
/* Support for complaining about things in the symbol file that aren't
catastrophic.
Each such thing gets a counter. The first time we have the problem,
during a symbol read, we report it. At the end of symbol reading,
if verbose, we report how many of each problem we had. */
struct complaint {
char *message;
unsigned counter;
struct complaint *next;
};
/* Root of the chain of complaints that have at some point been issued.
This is used to reset the counters, and/or report the total counts. */
extern struct complaint complaint_root[1];
/* Functions that handle complaints. (in symfile.c) */
int complain();
void clear_complaints();
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