mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
8fb8eb5ca4
* NEWS: Mention "set debug symfile". * Makefile.in (SFILES): Add symfile-debug.c. (COMMON_OBS): Add symfile-debug.o. * elfread.c (elf_symfile_read): Use objfile_set_sym_fns to set the objfile's symbol functions. * objfiles.h (objfile_set_sym_fns): Declare. * symfile-debug.c: New file. * symfile.c (syms_from_objfile_1): Use objfile_set_sym_fns to set the objfile's symbol functions. (reread_symbols): Ditto.
682 lines
26 KiB
C
682 lines
26 KiB
C
/* Definitions for symbol file management in GDB.
|
||
|
||
Copyright (C) 1992-2013 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/>. */
|
||
|
||
#if !defined (OBJFILES_H)
|
||
#define OBJFILES_H
|
||
|
||
#include "gdb_obstack.h" /* For obstack internals. */
|
||
#include "symfile.h" /* For struct psymbol_allocation_list. */
|
||
#include "progspace.h"
|
||
#include "registry.h"
|
||
#include "gdb_bfd.h"
|
||
|
||
struct bcache;
|
||
struct htab;
|
||
struct symtab;
|
||
struct objfile_data;
|
||
|
||
/* This structure maintains information on a per-objfile basis about the
|
||
"entry point" of the objfile, and the scope within which the entry point
|
||
exists. It is possible that gdb will see more than one objfile that is
|
||
executable, each with its own entry point.
|
||
|
||
For example, for dynamically linked executables in SVR4, the dynamic linker
|
||
code is contained within the shared C library, which is actually executable
|
||
and is run by the kernel first when an exec is done of a user executable
|
||
that is dynamically linked. The dynamic linker within the shared C library
|
||
then maps in the various program segments in the user executable and jumps
|
||
to the user executable's recorded entry point, as if the call had been made
|
||
directly by the kernel.
|
||
|
||
The traditional gdb method of using this info was to use the
|
||
recorded entry point to set the entry-file's lowpc and highpc from
|
||
the debugging information, where these values are the starting
|
||
address (inclusive) and ending address (exclusive) of the
|
||
instruction space in the executable which correspond to the
|
||
"startup file", i.e. crt0.o in most cases. This file is assumed to
|
||
be a startup file and frames with pc's inside it are treated as
|
||
nonexistent. Setting these variables is necessary so that
|
||
backtraces do not fly off the bottom of the stack.
|
||
|
||
NOTE: cagney/2003-09-09: It turns out that this "traditional"
|
||
method doesn't work. Corinna writes: ``It turns out that the call
|
||
to test for "inside entry file" destroys a meaningful backtrace
|
||
under some conditions. E.g. the backtrace tests in the asm-source
|
||
testcase are broken for some targets. In this test the functions
|
||
are all implemented as part of one file and the testcase is not
|
||
necessarily linked with a start file (depending on the target).
|
||
What happens is, that the first frame is printed normaly and
|
||
following frames are treated as being inside the enttry file then.
|
||
This way, only the #0 frame is printed in the backtrace output.''
|
||
Ref "frame.c" "NOTE: vinschen/2003-04-01".
|
||
|
||
Gdb also supports an alternate method to avoid running off the bottom
|
||
of the stack.
|
||
|
||
There are two frames that are "special", the frame for the function
|
||
containing the process entry point, since it has no predecessor frame,
|
||
and the frame for the function containing the user code entry point
|
||
(the main() function), since all the predecessor frames are for the
|
||
process startup code. Since we have no guarantee that the linked
|
||
in startup modules have any debugging information that gdb can use,
|
||
we need to avoid following frame pointers back into frames that might
|
||
have been built in the startup code, as we might get hopelessly
|
||
confused. However, we almost always have debugging information
|
||
available for main().
|
||
|
||
These variables are used to save the range of PC values which are
|
||
valid within the main() function and within the function containing
|
||
the process entry point. If we always consider the frame for
|
||
main() as the outermost frame when debugging user code, and the
|
||
frame for the process entry point function as the outermost frame
|
||
when debugging startup code, then all we have to do is have
|
||
DEPRECATED_FRAME_CHAIN_VALID return false whenever a frame's
|
||
current PC is within the range specified by these variables. In
|
||
essence, we set "ceilings" in the frame chain beyond which we will
|
||
not proceed when following the frame chain back up the stack.
|
||
|
||
A nice side effect is that we can still debug startup code without
|
||
running off the end of the frame chain, assuming that we have usable
|
||
debugging information in the startup modules, and if we choose to not
|
||
use the block at main, or can't find it for some reason, everything
|
||
still works as before. And if we have no startup code debugging
|
||
information but we do have usable information for main(), backtraces
|
||
from user code don't go wandering off into the startup code. */
|
||
|
||
struct entry_info
|
||
{
|
||
/* The relocated value we should use for this objfile entry point. */
|
||
CORE_ADDR entry_point;
|
||
|
||
/* 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
|
||
OBJFILE. */
|
||
|
||
struct obj_section
|
||
{
|
||
struct bfd_section *the_bfd_section; /* BFD section pointer */
|
||
|
||
/* Objfile this section is part of. */
|
||
struct objfile *objfile;
|
||
|
||
/* True if this "overlay section" is mapped into an "overlay region". */
|
||
int ovly_mapped;
|
||
};
|
||
|
||
/* Relocation offset applied to S. */
|
||
#define obj_section_offset(s) \
|
||
(((s)->objfile->section_offsets)->offsets[gdb_bfd_section_index ((s)->objfile->obfd, (s)->the_bfd_section)])
|
||
|
||
/* The memory address of section S (vma + offset). */
|
||
#define obj_section_addr(s) \
|
||
(bfd_get_section_vma ((s)->objfile->obfd, 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->obfd, 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
|
||
per objfile basis, such as information about the number of symbols
|
||
read, size of string table (if any), etc. */
|
||
|
||
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 (void);
|
||
extern void print_symbol_bcache_statistics (void);
|
||
|
||
/* Number of entries in the minimal symbol hash table. */
|
||
#define MINIMAL_SYMBOL_HASH_SIZE 2039
|
||
|
||
/* Some objfile data is hung off the BFD. This enables sharing of the
|
||
data across all objfiles using the BFD. The data is stored in an
|
||
instance of this structure, and associated with the BFD using the
|
||
registry system. */
|
||
|
||
struct objfile_per_bfd_storage
|
||
{
|
||
/* The storage has an obstack of its own. */
|
||
|
||
struct obstack storage_obstack;
|
||
|
||
/* Byte cache for file names. */
|
||
|
||
struct bcache *filename_cache;
|
||
|
||
/* Byte cache for macros. */
|
||
struct bcache *macro_cache;
|
||
|
||
/* 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;
|
||
};
|
||
|
||
/* 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,
|
||
2. Additional symbol files added by the add-symbol-file command,
|
||
3. Shared library objfiles, added by ADD_SOLIB, 4. symbol files
|
||
for modules that were loaded when GDB attached to a remote system
|
||
(see remote-vx.c). */
|
||
|
||
struct objfile
|
||
{
|
||
|
||
/* All struct objfile's are chained together by their next pointers.
|
||
The program space field "objfiles" (frequently referenced via
|
||
the macro "object_files") points to the first link in this
|
||
chain. */
|
||
|
||
struct objfile *next;
|
||
|
||
/* The object file's name, tilde-expanded and absolute. This
|
||
pointer is never NULL. This does not have to be freed; it is
|
||
guaranteed to have a lifetime at least as long as the objfile. */
|
||
|
||
char *original_name;
|
||
|
||
CORE_ADDR addr_low;
|
||
|
||
/* Some flag bits for this objfile.
|
||
The values are defined by OBJF_*. */
|
||
|
||
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 symtab *symtabs;
|
||
|
||
/* Each objfile points to a linked list of partial symtabs derived from
|
||
this file, one partial symtab structure for each compilation unit
|
||
(source file). */
|
||
|
||
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;
|
||
|
||
/* 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;
|
||
|
||
/* The per-BFD data. Note that this is treated specially if OBFD
|
||
is NULL. */
|
||
|
||
struct objfile_per_bfd_storage *per_bfd;
|
||
|
||
/* The modification timestamp of the object file, as of the last time
|
||
we read its symbols. */
|
||
|
||
long mtime;
|
||
|
||
/* Obstack to hold objects that should be freed when we load a new symbol
|
||
table from this object file. */
|
||
|
||
struct obstack objfile_obstack;
|
||
|
||
/* A byte cache where we can stash arbitrary "chunks" of bytes that
|
||
will not change. */
|
||
|
||
struct psymbol_bcache *psymbol_cache; /* Byte cache for partial syms. */
|
||
|
||
/* Hash table for mapping symbol names to demangled names. Each
|
||
entry in the hash table is actually two consecutive strings,
|
||
both null-terminated; the first one is a mangled or linkage
|
||
name, and the second is the demangled name or just a zero byte
|
||
if the name doesn't demangle. */
|
||
struct htab *demangled_names_hash;
|
||
|
||
/* Vectors of all partial symbols read in from file. The actual data
|
||
is stored in the objfile_obstack. */
|
||
|
||
struct psymbol_allocation_list global_psymbols;
|
||
struct psymbol_allocation_list static_psymbols;
|
||
|
||
/* Each file contains a pointer to an array of minimal symbols for all
|
||
global symbols that are defined within the file. The array is
|
||
terminated by a "null symbol", one that has a NULL pointer for the
|
||
name and a zero value for the address. This makes it easy to walk
|
||
through the array when passed a pointer to somewhere in the middle
|
||
of it. There is also a count of the number of symbols, which does
|
||
not include the terminating null symbol. The array itself, as well
|
||
as all the data that it points to, should be allocated on the
|
||
objfile_obstack for this file. */
|
||
|
||
struct minimal_symbol *msymbols;
|
||
int minimal_symbol_count;
|
||
|
||
/* This is a hash table used to index the minimal symbols by name. */
|
||
|
||
struct minimal_symbol *msymbol_hash[MINIMAL_SYMBOL_HASH_SIZE];
|
||
|
||
/* This hash table is used to index the minimal symbols by their
|
||
demangled names. */
|
||
|
||
struct minimal_symbol *msymbol_demangled_hash[MINIMAL_SYMBOL_HASH_SIZE];
|
||
|
||
/* 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
|
||
allocated memory, and is shared by all objfiles that use the
|
||
object module reader of this type. */
|
||
|
||
const struct sym_fns *sf;
|
||
|
||
/* The per-objfile information about the entry point, the scope (file/func)
|
||
containing the entry point, and the scope of the user's main() func. */
|
||
|
||
struct entry_info ei;
|
||
|
||
/* Per objfile data-pointers required by other GDB modules. */
|
||
|
||
REGISTRY_FIELDS;
|
||
|
||
/* Set of relocation offsets to apply to each section.
|
||
The table is indexed by the_bfd_section->index, thus it is generally
|
||
as large as the number of sections in the binary.
|
||
The table is stored on the objfile_obstack.
|
||
|
||
These offsets indicate that all symbols (including partial and
|
||
minimal symbols) which have been read have been relocated by this
|
||
much. Symbols which are yet to be read need to be relocated by it. */
|
||
|
||
struct section_offsets *section_offsets;
|
||
int num_sections;
|
||
|
||
/* Indexes in the section_offsets array. These are initialized by the
|
||
*_symfile_offsets() family of functions (som_symfile_offsets,
|
||
xcoff_symfile_offsets, default_symfile_offsets). In theory they
|
||
should correspond to the section indexes used by bfd for the
|
||
current objfile. The exception to this for the time being is the
|
||
SOM version. */
|
||
|
||
int sect_index_text;
|
||
int sect_index_data;
|
||
int sect_index_bss;
|
||
int sect_index_rodata;
|
||
|
||
/* These pointers are used to locate the section table, which
|
||
among other things, is used to map pc addresses into sections.
|
||
SECTIONS points to the first entry in the table, and
|
||
SECTIONS_END points to the first location past the last entry
|
||
in the table. The table is stored on the objfile_obstack. The
|
||
sections are indexed by the BFD section index; but the
|
||
structure data is only valid for certain sections
|
||
(e.g. non-empty, SEC_ALLOC). */
|
||
|
||
struct obj_section *sections, *sections_end;
|
||
|
||
/* 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;
|
||
|
||
/* A linked list of symbols created when reading template types or
|
||
function templates. These symbols are not stored in any symbol
|
||
table, so we have to keep them here to relocate them
|
||
properly. */
|
||
struct symbol *template_symbols;
|
||
};
|
||
|
||
/* Defines for the objfile flag word. */
|
||
|
||
/* 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 << 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.
|
||
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.) */
|
||
|
||
#define OBJF_SHARED (1 << 1) /* From a shared library */
|
||
|
||
/* User requested that this objfile be read in it's entirety. */
|
||
|
||
#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
|
||
for run_command to remove old objfile entries which are no longer
|
||
valid (i.e., are associated with an old inferior), but to preserve
|
||
ones that the user explicitly loaded via the add-symbol-file
|
||
command. */
|
||
|
||
#define OBJF_USERLOADED (1 << 3) /* User loaded */
|
||
|
||
/* Set if we have tried to read partial symtabs for this objfile.
|
||
This is used to allow lazy reading of partial symtabs. */
|
||
|
||
#define OBJF_PSYMTABS_READ (1 << 4)
|
||
|
||
/* Set if this is the main symbol file
|
||
(as opposed to symbol file for dynamically loaded code). */
|
||
|
||
#define OBJF_MAINLINE (1 << 5)
|
||
|
||
/* Declarations for functions defined in objfiles.c */
|
||
|
||
extern struct objfile *allocate_objfile (bfd *, const char *name, int);
|
||
|
||
extern struct gdbarch *get_objfile_arch (struct objfile *);
|
||
|
||
extern int entry_point_address_query (CORE_ADDR *entry_p);
|
||
|
||
extern CORE_ADDR entry_point_address (void);
|
||
|
||
extern void 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 *, const struct section_offsets *);
|
||
extern void objfile_rebase (struct objfile *, CORE_ADDR);
|
||
|
||
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 objfile_set_sym_fns (struct objfile *objfile,
|
||
const struct sym_fns *sf);
|
||
|
||
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 void objfile_purge_solibs (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 int have_minimal_symbols (void);
|
||
|
||
extern struct obj_section *find_pc_section (CORE_ADDR pc);
|
||
|
||
/* Return non-zero if PC is in a section called NAME. */
|
||
extern int pc_in_section (CORE_ADDR, char *);
|
||
|
||
/* Return non-zero if PC is in a SVR4-style procedure linkage table
|
||
section. */
|
||
|
||
static inline int
|
||
in_plt_section (CORE_ADDR pc)
|
||
{
|
||
return pc_in_section (pc, ".plt");
|
||
}
|
||
|
||
/* Keep a registry of per-objfile data-pointers required by other GDB
|
||
modules. */
|
||
DECLARE_REGISTRY(objfile);
|
||
|
||
/* In normal use, the section map will be rebuilt by find_pc_section
|
||
if objfiles have been added, removed or relocated since it was last
|
||
called. Calling inhibit_section_map_updates will inhibit this
|
||
behavior until resume_section_map_updates is called. If you call
|
||
inhibit_section_map_updates you must ensure that every call to
|
||
find_pc_section in the inhibited region relates to a section that
|
||
is already in the section map and has not since been removed or
|
||
relocated. */
|
||
extern void inhibit_section_map_updates (struct program_space *pspace);
|
||
|
||
/* Resume automatically rebuilding the section map as required. */
|
||
extern void resume_section_map_updates (struct program_space *pspace);
|
||
|
||
/* Version of the above suitable for use as a cleanup. */
|
||
extern void resume_section_map_updates_cleanup (void *arg);
|
||
|
||
extern void default_iterate_over_objfiles_in_search_order
|
||
(struct gdbarch *gdbarch,
|
||
iterate_over_objfiles_in_search_order_cb_ftype *cb,
|
||
void *cb_data, struct objfile *current_objfile);
|
||
|
||
|
||
/* 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) = current_program_space->objfiles; \
|
||
(obj) != NULL; \
|
||
(obj) = (obj)->next)
|
||
|
||
#define ALL_OBJFILES_SAFE(obj,nxt) \
|
||
for ((obj) = current_program_space->objfiles; \
|
||
(obj) != NULL? ((nxt)=(obj)->next,1) :0; \
|
||
(obj) = (nxt))
|
||
|
||
/* Traverse all symtabs in one objfile. */
|
||
|
||
#define ALL_OBJFILE_SYMTABS(objfile, s) \
|
||
for ((s) = (objfile) -> symtabs; (s) != NULL; (s) = (s) -> next)
|
||
|
||
/* Traverse all primary symtabs in one objfile. */
|
||
|
||
#define ALL_OBJFILE_PRIMARY_SYMTABS(objfile, s) \
|
||
ALL_OBJFILE_SYMTABS ((objfile), (s)) \
|
||
if ((s)->primary)
|
||
|
||
/* Traverse all minimal symbols in one objfile. */
|
||
|
||
#define ALL_OBJFILE_MSYMBOLS(objfile, m) \
|
||
for ((m) = (objfile) -> msymbols; SYMBOL_LINKAGE_NAME(m) != NULL; (m)++)
|
||
|
||
/* Traverse all symtabs in all objfiles in the current symbol
|
||
space. */
|
||
|
||
#define ALL_SYMTABS(objfile, s) \
|
||
ALL_OBJFILES (objfile) \
|
||
ALL_OBJFILE_SYMTABS (objfile, s)
|
||
|
||
#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_PRIMARY_SYMTABS (objfile, s)
|
||
|
||
#define ALL_PSPACE_PRIMARY_SYMTABS(pspace, objfile, s) \
|
||
ALL_PSPACE_OBJFILES (ss, objfile) \
|
||
ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s)
|
||
|
||
/* Traverse all minimal symbols in all objfiles in the current symbol
|
||
space. */
|
||
|
||
#define ALL_MSYMBOLS(objfile, m) \
|
||
ALL_OBJFILES (objfile) \
|
||
ALL_OBJFILE_MSYMBOLS (objfile, m)
|
||
|
||
#define ALL_OBJFILE_OSECTIONS(objfile, osect) \
|
||
for (osect = objfile->sections; osect < objfile->sections_end; osect++) \
|
||
if (osect->the_bfd_section == NULL) \
|
||
{ \
|
||
/* Nothing. */ \
|
||
} \
|
||
else
|
||
|
||
/* Traverse all obj_sections in all objfiles in the current program
|
||
space.
|
||
|
||
Note that this detects a "break" in the inner loop, and exits
|
||
immediately from the outer loop as well, thus, client code doesn't
|
||
need to know that this is implemented with a double for. The extra
|
||
hair is to make sure that a "break;" stops the outer loop iterating
|
||
as well, and both OBJFILE and OSECT are left unmodified:
|
||
|
||
- The outer loop learns about the inner loop's end condition, and
|
||
stops iterating if it detects the inner loop didn't reach its
|
||
end. In other words, the outer loop keeps going only if the
|
||
inner loop reached its end cleanly [(osect) ==
|
||
(objfile)->sections_end].
|
||
|
||
- OSECT is initialized in the outer loop initialization
|
||
expressions, such as if the inner loop has reached its end, so
|
||
the check mentioned above succeeds the first time.
|
||
|
||
- The trick to not clearing OBJFILE on a "break;" is, in the outer
|
||
loop's loop expression, advance OBJFILE, but iff the inner loop
|
||
reached its end. If not, there was a "break;", so leave OBJFILE
|
||
as is; the outer loop's conditional will break immediately as
|
||
well (as OSECT will be different from OBJFILE->sections_end). */
|
||
|
||
#define ALL_OBJSECTIONS(objfile, osect) \
|
||
for ((objfile) = current_program_space->objfiles, \
|
||
(objfile) != NULL ? ((osect) = (objfile)->sections_end) : 0; \
|
||
(objfile) != NULL \
|
||
&& (osect) == (objfile)->sections_end; \
|
||
((osect) == (objfile)->sections_end \
|
||
? ((objfile) = (objfile)->next, \
|
||
(objfile) != NULL ? (osect) = (objfile)->sections_end : 0) \
|
||
: 0)) \
|
||
ALL_OBJFILE_OSECTIONS (objfile, osect)
|
||
|
||
#define SECT_OFF_DATA(objfile) \
|
||
((objfile->sect_index_data == -1) \
|
||
? (internal_error (__FILE__, __LINE__, \
|
||
_("sect_index_data not initialized")), -1) \
|
||
: objfile->sect_index_data)
|
||
|
||
#define SECT_OFF_RODATA(objfile) \
|
||
((objfile->sect_index_rodata == -1) \
|
||
? (internal_error (__FILE__, __LINE__, \
|
||
_("sect_index_rodata not initialized")), -1) \
|
||
: objfile->sect_index_rodata)
|
||
|
||
#define SECT_OFF_TEXT(objfile) \
|
||
((objfile->sect_index_text == -1) \
|
||
? (internal_error (__FILE__, __LINE__, \
|
||
_("sect_index_text not initialized")), -1) \
|
||
: objfile->sect_index_text)
|
||
|
||
/* Sometimes the .bss section is missing from the objfile, so we don't
|
||
want to die here. Let the users of SECT_OFF_BSS deal with an
|
||
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)
|
||
|
||
/* Reset the per-BFD storage area on OBJ. */
|
||
|
||
void set_objfile_per_bfd (struct objfile *obj);
|
||
|
||
const char *objfile_name (const struct objfile *objfile);
|
||
|
||
#endif /* !defined (OBJFILES_H) */
|