/* Definitions for symbol file management in GDB.
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdb_obstack.h" /* For obstack internals. */
#include "symfile.h" /* For struct psymbol_allocation_list */
+#include "progspace.h"
struct bcache;
struct htab;
struct entry_info
{
-
- /* The value we should use for this objects entry point.
- The illegal/unknown value needs to be something other than 0, ~0
- for instance, which is much less likely than 0. */
-
+ /* The relocated value we should use for this objfile entry point. */
CORE_ADDR entry_point;
-#define INVALID_ENTRY_POINT (~0) /* ~0 will not be in any file, we hope. */
-
+ /* Set to 1 iff ENTRY_POINT contains a valid value. */
+ unsigned entry_point_p : 1;
};
/* Sections in an objfile. The section offsets are stored in the
unsigned short flags;
+ /* The program space associated with this objfile. */
+
+ struct program_space *pspace;
+
/* Each objfile points to a linked list of symtabs derived from this file,
one symtab structure for each compilation unit (source file). Each link
in the symtab list contains a backpointer to this objfile. */
struct bcache *psymbol_cache; /* Byte cache for partial syms */
struct bcache *macro_cache; /* Byte cache for macros */
+ struct bcache *filename_cache; /* Byte cache for file names. */
/* Hash table for mapping symbol names to demangled names. Each
entry in the hash table is actually two consecutive strings,
struct obj_section
*sections, *sections_end;
- /* Link to objfile that contains the debug symbols for this one.
- One is loaded if this file has an debug link to an existing
- debug file with the right checksum */
+ /* GDB allows to have debug symbols in separate object files. This is
+ used by .gnu_debuglink, ELF build id note and Mach-O OSO.
+ Although this is a tree structure, GDB only support one level
+ (ie a separate debug for a separate debug is not supported). Note that
+ separate debug object are in the main chain and therefore will be
+ visited by ALL_OBJFILES & co iterators. Separate debug objfile always
+ has a non-nul separate_debug_objfile_backlink. */
+
+ /* Link to the first separate debug object, if any. */
struct objfile *separate_debug_objfile;
/* If this is a separate debug object, this is used as a link to the
actual executable objfile. */
struct objfile *separate_debug_objfile_backlink;
-
+
+ /* If this is a separate debug object, this is a link to the next one
+ for the same executable objfile. */
+ struct objfile *separate_debug_objfile_link;
+
/* Place to stash various statistics about this objfile */
OBJSTATS;
/* Defines for the objfile flag word. */
-/* When using mapped/remapped predigested gdb symbol information, we need
- a flag that indicates that we have previously done an initial symbol
- table read from this particular objfile. We can't just look for the
- absence of any of the three symbol tables (msymbols, psymtab, symtab)
- because if the file has no symbols for example, none of these will
- exist. */
-
-#define OBJF_SYMS (1 << 1) /* Have tried to read symbols */
-
/* When an object file has its functions reordered (currently Irix-5.2
shared libraries exhibit this behaviour), we will need an expensive
algorithm to locate a partial symtab or symtab via an address.
To avoid this penalty for normal object files, we use this flag,
whose setting is determined upon symbol table read in. */
-#define OBJF_REORDERED (1 << 2) /* Functions are reordered */
+#define OBJF_REORDERED (1 << 0) /* Functions are reordered */
/* Distinguish between an objfile for a shared library and a "vanilla"
objfile. (If not set, the objfile may still actually be a solib.
implementation of the solib interface is responsible for setting
this flag when noticing solibs used by an inferior.) */
-#define OBJF_SHARED (1 << 3) /* From a shared library */
+#define OBJF_SHARED (1 << 1) /* From a shared library */
/* User requested that this objfile be read in it's entirety. */
-#define OBJF_READNOW (1 << 4) /* Immediate full read */
+#define OBJF_READNOW (1 << 2) /* Immediate full read */
/* This objfile was created because the user explicitly caused it
(e.g., used the add-symbol-file command). This bit offers a way
ones that the user explicitly loaded via the add-symbol-file
command. */
-#define OBJF_USERLOADED (1 << 5) /* User loaded */
-
-/* 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;
+#define OBJF_USERLOADED (1 << 3) /* User loaded */
/* The object file that contains the runtime common minimal symbols
for SunOS4. Note that this objfile has no associated BFD. */
extern struct objfile *current_objfile;
-/* All known objfiles are kept in a linked list. This points to the
- root of this list. */
-
-extern struct objfile *object_files;
-
/* Declarations for functions defined in objfiles.c */
extern struct objfile *allocate_objfile (bfd *, int);
extern void init_entry_point_info (struct objfile *);
+extern int entry_point_address_query (CORE_ADDR *entry_p);
+
extern CORE_ADDR entry_point_address (void);
extern int build_objfile_section_table (struct objfile *);
extern void terminate_minimal_symbol_table (struct objfile *objfile);
+extern struct objfile *objfile_separate_debug_iterate (const struct objfile *,
+ const struct objfile *);
+
extern void put_objfile_before (struct objfile *, struct objfile *);
extern void objfile_to_front (struct objfile *);
+extern void add_separate_debug_objfile (struct objfile *, struct objfile *);
+
extern void unlink_objfile (struct objfile *);
extern void free_objfile (struct objfile *);
+extern void free_objfile_separate_debug (struct objfile *);
+
extern struct cleanup *make_cleanup_free_objfile (struct objfile *);
extern void free_all_objfiles (void);
extern void objfile_relocate (struct objfile *, struct section_offsets *);
+extern int objfile_has_partial_symbols (struct objfile *objfile);
+
+extern int objfile_has_full_symbols (struct objfile *objfile);
+
+extern int objfile_has_symbols (struct objfile *objfile);
+
extern int have_partial_symbols (void);
extern int have_full_symbols (void);
+extern void objfiles_changed (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 struct obj_section *find_pc_section (CORE_ADDR pc);
-extern struct obj_section *find_pc_sect_section (CORE_ADDR pc,
- asection * section);
-
extern int in_plt_section (CORE_ADDR, char *);
/* Keep a registry of per-objfile data-pointers required by other GDB
modules. */
+/* Allocate an entry in the per-objfile registry. */
extern const struct objfile_data *register_objfile_data (void);
+
+/* Allocate an entry in the per-objfile registry.
+ SAVE and FREE are called when clearing objfile data.
+ First all registered SAVE functions are called.
+ Then all registered FREE functions are called.
+ Either or both of SAVE, FREE may be NULL. */
extern const struct objfile_data *register_objfile_data_with_cleanup
- (void (*cleanup) (struct objfile *, void *));
+ (void (*save) (struct objfile *, void *),
+ void (*free) (struct objfile *, void *));
+
extern void clear_objfile_data (struct objfile *objfile);
extern void set_objfile_data (struct objfile *objfile,
const struct objfile_data *data, void *value);
extern void *objfile_data (struct objfile *objfile,
const struct objfile_data *data);
+
+extern struct bfd *gdb_bfd_ref (struct bfd *abfd);
+extern void gdb_bfd_unref (struct bfd *abfd);
\f
-/* Traverse all object files. ALL_OBJFILES_SAFE works even if you delete
- the objfile during the traversal. */
+/* Traverse all object files in the current program space.
+ ALL_OBJFILES_SAFE works even if you delete the objfile during the
+ traversal. */
+
+/* Traverse all object files in program space SS. */
+
+#define ALL_PSPACE_OBJFILES(ss, obj) \
+ for ((obj) = ss->objfiles; (obj) != NULL; (obj) = (obj)->next) \
+
+#define ALL_PSPACE_OBJFILES_SAFE(ss, obj, nxt) \
+ for ((obj) = ss->objfiles; \
+ (obj) != NULL? ((nxt)=(obj)->next,1) :0; \
+ (obj) = (nxt))
-#define ALL_OBJFILES(obj) \
- for ((obj) = object_files; (obj) != NULL; (obj) = (obj)->next)
+#define ALL_OBJFILES(obj) \
+ for ((obj) = current_program_space->objfiles; \
+ (obj) != NULL; \
+ (obj) = (obj)->next)
-#define ALL_OBJFILES_SAFE(obj,nxt) \
- for ((obj) = object_files; \
+#define ALL_OBJFILES_SAFE(obj,nxt) \
+ for ((obj) = current_program_space->objfiles; \
(obj) != NULL? ((nxt)=(obj)->next,1) :0; \
(obj) = (nxt))
#define ALL_OBJFILE_SYMTABS(objfile, s) \
for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next)
-/* Traverse all psymtabs in one objfile. */
-
-#define ALL_OBJFILE_PSYMTABS(objfile, p) \
- for ((p) = (objfile) -> psymtabs; (p) != NULL; (p) = (p) -> next)
-
/* Traverse all minimal symbols in one objfile. */
#define ALL_OBJFILE_MSYMBOLS(objfile, m) \
- for ((m) = (objfile) -> msymbols; DEPRECATED_SYMBOL_NAME(m) != NULL; (m)++)
+ for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++)
-/* Traverse all symtabs in all objfiles. */
+/* Traverse all symtabs in all objfiles in the current symbol
+ space. */
#define ALL_SYMTABS(objfile, s) \
ALL_OBJFILES (objfile) \
ALL_OBJFILE_SYMTABS (objfile, s)
-/* Traverse all symtabs in all objfiles, skipping included files
- (which share a blockvector with their primary symtab). */
+#define ALL_PSPACE_SYMTABS(ss, objfile, s) \
+ ALL_PSPACE_OBJFILES (ss, objfile) \
+ ALL_OBJFILE_SYMTABS (objfile, s)
+
+/* Traverse all symtabs in all objfiles in the current program space,
+ skipping included files (which share a blockvector with their
+ primary symtab). */
#define ALL_PRIMARY_SYMTABS(objfile, s) \
ALL_OBJFILES (objfile) \
ALL_OBJFILE_SYMTABS (objfile, s) \
if ((s)->primary)
-/* Traverse all psymtabs in all objfiles. */
-
-#define ALL_PSYMTABS(objfile, p) \
- ALL_OBJFILES (objfile) \
- ALL_OBJFILE_PSYMTABS (objfile, p)
+#define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \
+ ALL_PSPACE_OBJFILES (ss, objfile) \
+ ALL_OBJFILE_SYMTABS (objfile, s) \
+ if ((s)->primary)
-/* Traverse all minimal symbols in all objfiles. */
+/* Traverse all minimal symbols in all objfiles in the current symbol
+ space. */
#define ALL_MSYMBOLS(objfile, m) \
ALL_OBJFILES (objfile) \
uninitialized section index. */
#define SECT_OFF_BSS(objfile) (objfile)->sect_index_bss
+/* Answer whether there is more than one object file loaded. */
+
+#define MULTI_OBJFILE_P() (object_files && object_files->next)
+
#endif /* !defined (OBJFILES_H) */
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