/* Generic symbol file reading for the GNU debugger, GDB.
- Copyright (C) 1990-2013 Free Software Foundation, Inc.
+ Copyright (C) 1990-2014 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
#include <sys/types.h>
#include <fcntl.h>
-#include "gdb_string.h"
-#include "gdb_stat.h"
+#include <string.h>
+#include <sys/stat.h>
#include <ctype.h>
#include <time.h>
#include <sys/time.h>
static VEC (registered_sym_fns) *symtab_fns = NULL;
+/* Values for "set print symbol-loading". */
+
+const char print_symbol_loading_off[] = "off";
+const char print_symbol_loading_brief[] = "brief";
+const char print_symbol_loading_full[] = "full";
+static const char *print_symbol_loading_enums[] =
+{
+ print_symbol_loading_off,
+ print_symbol_loading_brief,
+ print_symbol_loading_full,
+ NULL
+};
+static const char *print_symbol_loading = print_symbol_loading_full;
+
/* If non-zero, shared library symbols will be added automatically
when the inferior is created, new libraries are loaded, or when
attaching to the inferior. This is almost always what users will
int auto_solib_add = 1;
\f
+/* Return non-zero if symbol-loading messages should be printed.
+ FROM_TTY is the standard from_tty argument to gdb commands.
+ If EXEC is non-zero the messages are for the executable.
+ Otherwise, messages are for shared libraries.
+ If FULL is non-zero then the caller is printing a detailed message.
+ E.g., the message includes the shared library name.
+ Otherwise, the caller is printing a brief "summary" message. */
+
+int
+print_symbol_loading_p (int from_tty, int exec, int full)
+{
+ if (!from_tty && !info_verbose)
+ return 0;
+
+ if (exec)
+ {
+ /* We don't check FULL for executables, there are few such
+ messages, therefore brief == full. */
+ return print_symbol_loading != print_symbol_loading_off;
+ }
+ if (full)
+ return print_symbol_loading == print_symbol_loading_full;
+ return print_symbol_loading == print_symbol_loading_brief;
+}
+
/* True if we are reading a symbol table. */
int currently_reading_symtab = 0;
low = bfd_get_section_vma (abfd, sect);
high = low + bfd_get_section_size (sect);
- data = XZALLOC (struct symfile_segment_data);
+ data = XCNEW (struct symfile_segment_data);
data->num_segments = 1;
- data->segment_bases = XCALLOC (1, CORE_ADDR);
- data->segment_sizes = XCALLOC (1, CORE_ADDR);
+ data->segment_bases = XCNEW (CORE_ADDR);
+ data->segment_sizes = XCNEW (CORE_ADDR);
num_sections = bfd_count_sections (abfd);
- data->segment_info = XCALLOC (num_sections, int);
+ data->segment_info = XCNEWVEC (int, num_sections);
for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next)
{
read_symbols (struct objfile *objfile, int add_flags)
{
(*objfile->sf->sym_read) (objfile, add_flags);
+ objfile->per_bfd->minsyms_read = 1;
/* find_separate_debug_file_in_section should be called only if there is
single binary with no existing separate debug info file. */
static void
init_entry_point_info (struct objfile *objfile)
{
+ struct entry_info *ei = &objfile->per_bfd->ei;
+
+ if (ei->initialized)
+ return;
+ ei->initialized = 1;
+
/* Save startup file's range of PC addresses to help blockframe.c
decide where the bottom of the stack is. */
{
/* Executable file -- record its entry point so we'll recognize
the startup file because it contains the entry point. */
- objfile->ei.entry_point = bfd_get_start_address (objfile->obfd);
- objfile->ei.entry_point_p = 1;
+ ei->entry_point = bfd_get_start_address (objfile->obfd);
+ ei->entry_point_p = 1;
}
else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC
&& bfd_get_start_address (objfile->obfd) != 0)
/* Some shared libraries may have entry points set and be
runnable. There's no clear way to indicate this, so just check
for values other than zero. */
- objfile->ei.entry_point = bfd_get_start_address (objfile->obfd);
- objfile->ei.entry_point_p = 1;
+ ei->entry_point = bfd_get_start_address (objfile->obfd);
+ ei->entry_point_p = 1;
}
else
{
/* Examination of non-executable.o files. Short-circuit this stuff. */
- objfile->ei.entry_point_p = 0;
+ ei->entry_point_p = 0;
}
- if (objfile->ei.entry_point_p)
+ if (ei->entry_point_p)
{
- CORE_ADDR entry_point = objfile->ei.entry_point;
+ struct obj_section *osect;
+ CORE_ADDR entry_point = ei->entry_point;
+ int found;
/* Make certain that the address points at real code, and not a
function descriptor. */
/* Remove any ISA markers, so that this matches entries in the
symbol table. */
- objfile->ei.entry_point
+ ei->entry_point
= gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point);
+
+ found = 0;
+ ALL_OBJFILE_OSECTIONS (objfile, osect)
+ {
+ struct bfd_section *sect = osect->the_bfd_section;
+
+ if (entry_point >= bfd_get_section_vma (objfile->obfd, sect)
+ && entry_point < (bfd_get_section_vma (objfile->obfd, sect)
+ + bfd_get_section_size (sect)))
+ {
+ ei->the_bfd_section_index
+ = gdb_bfd_section_index (objfile->obfd, sect);
+ found = 1;
+ break;
+ }
+ }
+
+ if (!found)
+ ei->the_bfd_section_index = SECT_OFF_TEXT (objfile);
}
}
struct objfile *objfile;
const int from_tty = add_flags & SYMFILE_VERBOSE;
const int mainline = add_flags & SYMFILE_MAINLINE;
- const int should_print = ((from_tty || info_verbose)
+ const int should_print = (print_symbol_loading_p (from_tty, mainline, 1)
&& (readnow_symbol_files
|| (add_flags & SYMFILE_NO_READ) == 0));
void
set_initial_language (void)
{
- enum language lang = language_unknown;
+ enum language lang = main_language ();
- if (language_of_main != language_unknown)
- lang = language_of_main;
- else
+ if (lang == language_unknown)
{
char *name = main_name ();
struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL);
int expecting_sec_name = 0;
int expecting_sec_addr = 0;
char **argv;
+ struct objfile *objf;
struct sect_opt
{
if (from_tty && (!query ("%s", "")))
error (_("Not confirmed."));
- symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0,
- section_addrs, flags);
+ objf = symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0,
+ section_addrs, flags);
+
+ add_target_sections_of_objfile (objf);
/* Getting new symbols may change our opinion about what is
frameless. */
}
\f
+/* This function removes a symbol file that was added via add-symbol-file. */
+
+static void
+remove_symbol_file_command (char *args, int from_tty)
+{
+ char **argv;
+ struct objfile *objf = NULL;
+ struct cleanup *my_cleanups;
+ struct program_space *pspace = current_program_space;
+ struct gdbarch *gdbarch = get_current_arch ();
+
+ dont_repeat ();
+
+ if (args == NULL)
+ error (_("remove-symbol-file: no symbol file provided"));
+
+ my_cleanups = make_cleanup (null_cleanup, NULL);
+
+ argv = gdb_buildargv (args);
+
+ if (strcmp (argv[0], "-a") == 0)
+ {
+ /* Interpret the next argument as an address. */
+ CORE_ADDR addr;
+
+ if (argv[1] == NULL)
+ error (_("Missing address argument"));
+
+ if (argv[2] != NULL)
+ error (_("Junk after %s"), argv[1]);
+
+ addr = parse_and_eval_address (argv[1]);
+
+ ALL_OBJFILES (objf)
+ {
+ if (objf != 0
+ && objf->flags & OBJF_USERLOADED
+ && objf->pspace == pspace && is_addr_in_objfile (addr, objf))
+ break;
+ }
+ }
+ else if (argv[0] != NULL)
+ {
+ /* Interpret the current argument as a file name. */
+ char *filename;
+
+ if (argv[1] != NULL)
+ error (_("Junk after %s"), argv[0]);
+
+ filename = tilde_expand (argv[0]);
+ make_cleanup (xfree, filename);
+
+ ALL_OBJFILES (objf)
+ {
+ if (objf != 0
+ && objf->flags & OBJF_USERLOADED
+ && objf->pspace == pspace
+ && filename_cmp (filename, objfile_name (objf)) == 0)
+ break;
+ }
+ }
+
+ if (objf == NULL)
+ error (_("No symbol file found"));
+
+ if (from_tty
+ && !query (_("Remove symbol table from file \"%s\"? "),
+ objfile_name (objf)))
+ error (_("Not confirmed."));
+
+ free_objfile (objf);
+ clear_symtab_users (0);
+
+ do_cleanups (my_cleanups);
+}
+
typedef struct objfile *objfilep;
DEF_VEC_P (objfilep);
/* Free the obstacks for non-reusable objfiles. */
psymbol_bcache_free (objfile->psymbol_cache);
objfile->psymbol_cache = psymbol_bcache_init ();
- if (objfile->demangled_names_hash != NULL)
- {
- htab_delete (objfile->demangled_names_hash);
- objfile->demangled_names_hash = NULL;
- }
obstack_free (&objfile->objfile_obstack, 0);
objfile->sections = NULL;
objfile->symtabs = NULL;
objfile->psymtabs_addrmap = NULL;
objfile->free_psymtabs = NULL;
objfile->template_symbols = NULL;
- objfile->msymbols = NULL;
- objfile->minimal_symbol_count = 0;
- memset (&objfile->msymbol_hash, 0,
- sizeof (objfile->msymbol_hash));
- memset (&objfile->msymbol_demangled_hash, 0,
- sizeof (objfile->msymbol_demangled_hash));
-
- set_objfile_per_bfd (objfile);
/* obstack_init also initializes the obstack so it is
empty. We could use obstack_specify_allocation but
gdb_obstack.h specifies the alloc/dealloc functions. */
obstack_init (&objfile->objfile_obstack);
+ /* set_objfile_per_bfd potentially allocates the per-bfd
+ data on the objfile's obstack (if sharing data across
+ multiple users is not possible), so it's important to
+ do it *after* the obstack has been initialized. */
+ set_objfile_per_bfd (objfile);
+
objfile->original_name = obstack_copy0 (&objfile->objfile_obstack,
original_name,
strlen (original_name));
symtab = (struct symtab *)
obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab));
memset (symtab, 0, sizeof (*symtab));
- symtab->filename = (char *) bcache (filename, strlen (filename) + 1,
- objfile->per_bfd->filename_cache);
+ symtab->filename = bcache (filename, strlen (filename) + 1,
+ objfile->per_bfd->filename_cache);
symtab->fullname = NULL;
symtab->language = deduce_language_from_filename (filename);
symtab->debugformat = "unknown";
symtab->next = objfile->symtabs;
objfile->symtabs = symtab;
- if (symtab_create_debug)
+ /* This can be very verbose with lots of headers.
+ Only print at higher debug levels. */
+ if (symtab_create_debug >= 2)
{
/* Be a bit clever with debugging messages, and don't print objfile
every time, only when it changes. */
{
printf_unfiltered
("\"overlay\" must be followed by the name of an overlay command.\n");
- help_list (overlaylist, "overlay ", -1, gdb_stdout);
+ help_list (overlaylist, "overlay ", all_commands, gdb_stdout);
}
/* Target Overlays for the "Simplest" overlay manager:
static int
simple_read_overlay_table (void)
{
- struct minimal_symbol *novlys_msym;
+ struct bound_minimal_symbol novlys_msym;
struct bound_minimal_symbol ovly_table_msym;
struct gdbarch *gdbarch;
int word_size;
simple_free_overlay_table ();
novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL);
- if (! novlys_msym)
+ if (! novlys_msym.minsym)
{
error (_("Error reading inferior's overlay table: "
"couldn't find `_novlys' variable\n"
word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT;
byte_order = gdbarch_byte_order (gdbarch);
- cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym),
+ cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym),
4, byte_order);
cache_ovly_table
= (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table));
- cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym.minsym);
+ cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym);
read_target_long_array (cache_ovly_table_base,
(unsigned int *) cache_ovly_table,
cache_novlys * 4, word_size, byte_order);
{
/* Does its cached location match what's currently in the
symtab? */
- struct minimal_symbol *minsym
+ struct bound_minimal_symbol minsym
= lookup_minimal_symbol ("_ovly_table", NULL, NULL);
- if (minsym == NULL)
+ if (minsym.minsym == NULL)
error (_("Error reading inferior's overlay table: couldn't "
"find `_ovly_table' array\n"
"in inferior. Use `overlay manual' mode."));
- if (cache_ovly_table_base == SYMBOL_VALUE_ADDRESS (minsym))
+ if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym))
/* Then go ahead and try to look up this single section in
the cache. */
if (simple_overlay_update_1 (osect))
free_symfile_segment_data (data);
}
+/* Listen for free_objfile events. */
+
+static void
+symfile_free_objfile (struct objfile *objfile)
+{
+ /* Remove the target sections owned by this objfile. */
+ if (objfile != NULL)
+ remove_target_sections ((void *) objfile);
+}
+
+/* Wrapper around the quick_symbol_functions expand_symtabs_matching "method".
+ Expand all symtabs that match the specified criteria.
+ See quick_symbol_functions.expand_symtabs_matching for details. */
+
+void
+expand_symtabs_matching (expand_symtabs_file_matcher_ftype *file_matcher,
+ expand_symtabs_symbol_matcher_ftype *symbol_matcher,
+ enum search_domain kind,
+ void *data)
+{
+ struct objfile *objfile;
+
+ ALL_OBJFILES (objfile)
+ {
+ if (objfile->sf)
+ objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher,
+ symbol_matcher, kind,
+ data);
+ }
+}
+
+/* Wrapper around the quick_symbol_functions map_symbol_filenames "method".
+ Map function FUN over every file.
+ See quick_symbol_functions.map_symbol_filenames for details. */
+
+void
+map_symbol_filenames (symbol_filename_ftype *fun, void *data,
+ int need_fullname)
+{
+ struct objfile *objfile;
+
+ ALL_OBJFILES (objfile)
+ {
+ if (objfile->sf)
+ objfile->sf->qf->map_symbol_filenames (objfile, fun, data,
+ need_fullname);
+ }
+}
+
void
_initialize_symfile (void)
{
struct cmd_list_element *c;
+ observer_attach_free_objfile (symfile_free_objfile);
+
c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\
Load symbol table from executable file FILE.\n\
The `file' command can also load symbol tables, as well as setting the file\n\
&cmdlist);
set_cmd_completer (c, filename_completer);
+ c = add_cmd ("remove-symbol-file", class_files,
+ remove_symbol_file_command, _("\
+Remove a symbol file added via the add-symbol-file command.\n\
+Usage: remove-symbol-file FILENAME\n\
+ remove-symbol-file -a ADDRESS\n\
+The file to remove can be identified by its filename or by an address\n\
+that lies within the boundaries of this symbol file in memory."),
+ &cmdlist);
+
c = add_cmd ("load", class_files, load_command, _("\
Dynamically load FILE into the running program, and record its symbols\n\
for access from GDB.\n\
NULL,
show_debug_file_directory,
&setlist, &showlist);
+
+ add_setshow_enum_cmd ("symbol-loading", no_class,
+ print_symbol_loading_enums, &print_symbol_loading,
+ _("\
+Set printing of symbol loading messages."), _("\
+Show printing of symbol loading messages."), _("\
+off == turn all messages off\n\
+brief == print messages for the executable,\n\
+ and brief messages for shared libraries\n\
+full == print messages for the executable,\n\
+ and messages for each shared library."),
+ NULL,
+ NULL,
+ &setprintlist, &showprintlist);
}
projects / deliverable / binutils-gdb.git / blobdiff