/* Definitions for symbol file management in GDB.
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
+ 2002, 2003, 2004, 2007, 2008, 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (OBJFILES_H)
#define OBJFILES_H
};
-/* Sections in an objfile.
-
- It is strange that we have both this notion of "sections"
- and the one used by section_offsets. Section as used
- here, (currently at least) means a BFD section, and the sections
- are set up from the BFD sections in allocate_objfile.
-
- The sections in section_offsets have their meaning determined by
- the symbol format, and they are set up by the sym_offsets function
- for that symbol file format.
-
- I'm not sure this could or should be changed, however. */
+/* Sections in an objfile. The section offsets are stored in the
+ OBJFILE. */
struct obj_section
{
- CORE_ADDR addr; /* lowest address in section */
- CORE_ADDR endaddr; /* 1+highest address in section */
-
- /* This field is being used for nefarious purposes by syms_from_objfile.
- It is said to be redundant with section_offsets; it's not really being
- used that way, however, it's some sort of hack I don't understand
- and am not going to try to eliminate (yet, anyway). FIXME.
-
- It was documented as "offset between (end)addr and actual memory
- addresses", but that's not true; addr & endaddr are actual memory
- addresses. */
- CORE_ADDR offset;
-
struct bfd_section *the_bfd_section; /* BFD section pointer */
/* Objfile this section is part of. */
int ovly_mapped;
};
+/* Relocation offset applied to S. */
+#define obj_section_offset(s) \
+ (((s)->objfile->section_offsets)->offsets[(s)->the_bfd_section->index])
+
+/* The memory address of section S (vma + offset). */
+#define obj_section_addr(s) \
+ (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \
+ + obj_section_offset (s))
+
+/* The one-passed-the-end memory address of section S
+ (vma + size + offset). */
+#define obj_section_endaddr(s) \
+ (bfd_get_section_vma ((s)->objfile->abfd, s->the_bfd_section) \
+ + bfd_get_section_size ((s)->the_bfd_section) \
+ + obj_section_offset (s))
/* The "objstats" structure provides a place for gdb to record some
interesting information about its internal state at runtime, on a
struct partial_symtab *psymtabs;
+ /* Map addresses to the entries of PSYMTABS. It would be more efficient to
+ have a map per the whole process but ADDRMAP cannot selectively remove
+ its items during FREE_OBJFILE. This mapping is already present even for
+ PARTIAL_SYMTABs which still have no corresponding full SYMTABs read. */
+
+ struct addrmap *psymtabs_addrmap;
+
/* List of freed partial symtabs, available for re-use */
struct partial_symtab *free_psymtabs;
bfd *obfd;
+ /* The gdbarch associated with the BFD. Note that this gdbarch is
+ determined solely from BFD information, without looking at target
+ information. The gdbarch determined from a running target may
+ differ from this e.g. with respect to register types and names. */
+
+ struct gdbarch *gdbarch;
+
/* The modification timestamp of the object file, as of the last time
we read its symbols. */
struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE];
- /* For object file formats which don't specify fundamental types, gdb
- can create such types. For now, it maintains a vector of pointers
- to these internally created fundamental types on a per objfile basis,
- however it really should ultimately keep them on a per-compilation-unit
- basis, to account for linkage-units that consist of a number of
- compilation units that may have different fundamental types, such as
- linking C modules with ADA modules, or linking C modules that are
- compiled with 32-bit ints with C modules that are compiled with 64-bit
- ints (not inherently evil with a smarter linker). */
-
- struct type **fundamental_types;
-
- /* The mmalloc() malloc-descriptor for this objfile if we are using
- the memory mapped malloc() package to manage storage for this objfile's
- data. NULL if we are not. */
-
- void *md;
-
- /* The file descriptor that was used to obtain the mmalloc descriptor
- for this objfile. If we call mmalloc_detach with the malloc descriptor
- we should then close this file descriptor. */
-
- int mmfd;
-
/* Structure which keeps track of functions that manipulate objfile's
of the same type as this objfile. I.E. the function to read partial
symbols for example. Note that this structure is in statically
void *deprecated_sym_private;
- /* Hook for target-architecture-specific information. This must
- point to memory allocated on one of the obstacks in this objfile,
- so that it gets freed automatically when reading a new object
- file. */
-
- void *deprecated_obj_private;
-
/* Per objfile data-pointers required by other GDB modules. */
/* FIXME: kettenis/20030711: This mechanism could replace
- deprecated_sym_stab_info, deprecated_sym_private and
- deprecated_obj_private entirely. */
+ deprecated_sym_stab_info and deprecated_sym_private
+ entirely. */
void **data;
unsigned num_data;
/* 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 */
+#define OBJF_USERLOADED (1 << 3) /* User loaded */
+
+/* The bfd of this objfile is used outside of the objfile (e.g. by solib).
+ Do not try to free it. */
+
+#define OBJF_KEEPBFD (1 << 4) /* Do not delete bfd */
+
/* 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 *allocate_objfile (bfd *, int);
+extern struct gdbarch *get_objfile_arch (struct objfile *);
+
extern void init_entry_point_info (struct objfile *);
extern CORE_ADDR entry_point_address (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. */
extern const struct objfile_data *register_objfile_data (void);
+extern const struct objfile_data *register_objfile_data_with_cleanup
+ (void (*cleanup) (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);
/* 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. */
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) */
projects / deliverable / binutils-gdb.git / blobdiff