/* Definitions for symbol file management in GDB.
- Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#if !defined (OBJFILES_H)
#define OBJFILES_H
/* Objfile this section is part of. */
struct objfile *objfile;
+
+ /* True if this "overlay section" is mapped into an "overlay region". */
+ int ovly_mapped;
};
+/* An import entry contains information about a symbol that
+ is used in this objfile but not defined in it, and so needs
+ to be imported from some other objfile */
+/* Currently we just store the name; no attributes. 1997-08-05 */
+typedef char * ImportEntry;
+
+
+/* An export entry contains information about a symbol that
+ is defined in this objfile and available for use in other
+ objfiles */
+typedef struct {
+ char * name; /* name of exported symbol */
+ int address; /* offset subject to relocation */
+ /* Currently no other attributes 1997-08-05 */
+} ExportEntry;
+
+
+
+/* The "objstats" structure provides a place for gdb to record some
+ interesting information about its internal state at runtime, on a
+ per objfile basis, such as information about the number of symbols
+ read, size of string table (if any), etc. */
+
+#if MAINTENANCE_CMDS
+
+struct objstats {
+ int n_minsyms; /* Number of minimal symbols read */
+ int n_psyms; /* Number of partial symbols read */
+ int n_syms; /* Number of full symbols read */
+ int n_stabs; /* Number of ".stabs" read (if applicable) */
+ int n_types; /* Number of types */
+ int sz_strtab; /* Size of stringtable, (if applicable) */
+};
+
+#define OBJSTAT(objfile, expr) (objfile -> stats.expr)
+#define OBJSTATS struct objstats stats
+extern void print_objfile_statistics PARAMS ((void));
+extern void print_symbol_bcache_statistics PARAMS ((void));
+
+#else
+
+#define OBJSTAT(objfile, expr) /* Nothing */
+#define OBJSTATS /* Nothing */
+
+#endif /* MAINTENANCE_CMDS */
+
/* Master structure for keeping track of each file from which
gdb reads symbols. There are several ways these get allocated: 1.
The main symbol file, symfile_objfile, set by the symbol-file command,
char *name;
+ /* TRUE if this objfile was created because the user explicitly caused
+ it (e.g., used the add-symbol-file command).
+ */
+ int user_loaded;
+
+ /* TRUE if this objfile was explicitly created to represent a solib.
+
+ (If FALSE, the objfile may actually be a solib. This can happen if
+ the user created the objfile by using the add-symbol-file command.
+ GDB doesn't in that situation actually check whether the file is a
+ solib. Rather, the target's implementation of the solib interface
+ is responsible for setting this flag when noticing solibs used by
+ an inferior.)
+ */
+ int is_solib;
+
/* Some flag bits for this objfile. */
unsigned short flags;
struct partial_symtab *free_psymtabs;
- /* The object file's BFD. Can be null, in which case bfd_open (name) and
- put the result here. */
+ /* The object file's BFD. Can be null if the objfile contains only
+ minimal symbols, e.g. the run time common symbols for SunOS4. */
bfd *obfd;
struct obstack symbol_obstack; /* Full symbols */
struct obstack type_obstack; /* Types */
+ /* A byte cache where we can stash arbitrary "chunks" of bytes that
+ will not change. */
+
+ struct bcache psymbol_cache; /* Byte cache for partial syms */
+
/* Vectors of all partial symbols read in from file. The actual data
is stored in the psymbol_obstack. */
/* Information about stabs. Will be filled in with a dbx_symfile_info
struct by those readers that need it. */
- PTR sym_stab_info;
+ struct dbx_symfile_info *sym_stab_info;
/* Hook for information for use by the symbol reader (currently used
for information shared by sym_init and sym_read). It is
/* two auxiliary fields, used to hold the fp of separate symbol files */
FILE *auxf1, *auxf2;
+
+ /* Imported symbols */
+ ImportEntry * import_list;
+ int import_list_size;
+
+ /* Exported symbols */
+ ExportEntry * export_list;
+ int export_list_size;
+
+ /* Place to stash various statistics about this objfile */
+ OBJSTATS;
};
/* Defines for the objfile flag word. */
To avoid this penalty for normal object files, we use this flag,
whose setting is determined upon symbol table read in. */
-#define OBJF_REORDERED (2 << 1) /* Functions are reordered */
+#define OBJF_REORDERED (1 << 2) /* Functions are reordered */
+
+/* Distinguish between an objfile for a shared library and a
+ "vanilla" objfile. */
+
+#define OBJF_SHARED (1 << 3) /* From a shared library */
/* The object file that the main symbol table was loaded from (e.g. the
argument to the "symbol-file" or "file" command). */
extern struct objfile *symfile_objfile;
+/* The object file that contains the runtime common minimal symbols
+ for SunOS4. Note that this objfile has no associated BFD. */
+
+extern struct objfile *rt_common_objfile;
+
/* When we need to allocate a new type, we need to know which type_obstack
to allocate the type on, since there is one for each objfile. The places
where types are allocated are deeply buried in function call hierarchies
/* Declarations for functions defined in objfiles.c */
extern struct objfile *
-allocate_objfile PARAMS ((bfd *, int));
+allocate_objfile PARAMS ((bfd *, int, int, int));
extern int
build_objfile_section_table PARAMS ((struct objfile *));
+extern void objfile_to_front PARAMS ((struct objfile *));
+
extern void
unlink_objfile PARAMS ((struct objfile *));
extern int
have_full_symbols PARAMS ((void));
+/* This operation deletes all objfile entries that represent solibs that
+ weren't explicitly loaded by the user, via e.g., the add-symbol-file
+ command.
+ */
+extern void
+objfile_purge_solibs PARAMS ((void));
+
/* Functions for dealing with the minimal symbol table, really a misc
address<->symbol mapping for things we don't have debug symbols for. */
extern struct obj_section *
find_pc_section PARAMS((CORE_ADDR pc));
+extern struct obj_section *
+find_pc_sect_section PARAMS((CORE_ADDR pc, asection *section));
+
+extern int
+in_plt_section PARAMS ((CORE_ADDR, char *));
+
/* Traverse all object files. ALL_OBJFILES_SAFE works even if you delete
the objfile during the traversal. */
if ((objfile)->msymbols) \
ALL_OBJFILE_MSYMBOLS (objfile, m)
+#define ALL_OBJFILE_OSECTIONS(objfile, osect) \
+ for (osect = objfile->sections; osect < objfile->sections_end; osect++)
+
+#define ALL_OBJSECTIONS(objfile, osect) \
+ ALL_OBJFILES (objfile) \
+ ALL_OBJFILE_OSECTIONS (objfile, osect)
+
#endif /* !defined (OBJFILES_H) */