/* Support for GDB maintenance commands.
- Copyright (C) 1992-2020 Free Software Foundation, Inc.
+ Copyright (C) 1992-2021 Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support.
/* Mini tokenizing lexer for 'maint info sections' command. */
-static int
+static bool
match_substring (const char *string, const char *substr)
{
- int substr_len = strlen(substr);
+ int substr_len = strlen (substr);
const char *tok;
while ((tok = strstr (string, substr)) != NULL)
|| tok[substr_len] == '\0')
{
/* Token is delimited at the rear. Got a whole-word match. */
- return 1;
+ return true;
}
}
/* Token didn't match as a whole word. Advance and try again. */
string = tok + 1;
}
- return 0;
+ return false;
}
-static int
+/* Structure holding information about a single bfd section flag. This is
+ used by the "maintenance info sections" command to print the sections,
+ and for filtering which sections are printed. */
+
+struct single_bfd_flag_info
+{
+ /* The name of the section. This is what is printed for the flag, and
+ what the user enter in order to filter by flag. */
+ const char *name;
+
+ /* The bfd defined SEC_* flagword value for this flag. */
+ flagword value;
+};
+
+/* Vector of all the known bfd flags. */
+
+static const single_bfd_flag_info bfd_flag_info[] =
+ {
+ { "ALLOC", SEC_ALLOC },
+ { "LOAD", SEC_LOAD },
+ { "RELOC", SEC_RELOC },
+ { "READONLY", SEC_READONLY },
+ { "CODE", SEC_CODE },
+ { "DATA", SEC_DATA },
+ { "ROM", SEC_ROM },
+ { "CONSTRUCTOR", SEC_CONSTRUCTOR },
+ { "HAS_CONTENTS", SEC_HAS_CONTENTS },
+ { "NEVER_LOAD", SEC_NEVER_LOAD },
+ { "COFF_SHARED_LIBRARY", SEC_COFF_SHARED_LIBRARY },
+ { "IS_COMMON", SEC_IS_COMMON }
+ };
+
+/* For each flag in the global BFD_FLAG_INFO list, if FLAGS has a flag's
+ flagword value set, and STRING contains the flag's name then return
+ true, otherwise return false. STRING is never nullptr. */
+
+static bool
match_bfd_flags (const char *string, flagword flags)
{
- if (flags & SEC_ALLOC)
- if (match_substring (string, "ALLOC"))
- return 1;
- if (flags & SEC_LOAD)
- if (match_substring (string, "LOAD"))
- return 1;
- if (flags & SEC_RELOC)
- if (match_substring (string, "RELOC"))
- return 1;
- if (flags & SEC_READONLY)
- if (match_substring (string, "READONLY"))
- return 1;
- if (flags & SEC_CODE)
- if (match_substring (string, "CODE"))
- return 1;
- if (flags & SEC_DATA)
- if (match_substring (string, "DATA"))
- return 1;
- if (flags & SEC_ROM)
- if (match_substring (string, "ROM"))
- return 1;
- if (flags & SEC_CONSTRUCTOR)
- if (match_substring (string, "CONSTRUCTOR"))
- return 1;
- if (flags & SEC_HAS_CONTENTS)
- if (match_substring (string, "HAS_CONTENTS"))
- return 1;
- if (flags & SEC_NEVER_LOAD)
- if (match_substring (string, "NEVER_LOAD"))
- return 1;
- if (flags & SEC_COFF_SHARED_LIBRARY)
- if (match_substring (string, "COFF_SHARED_LIBRARY"))
- return 1;
- if (flags & SEC_IS_COMMON)
- if (match_substring (string, "IS_COMMON"))
- return 1;
-
- return 0;
+ gdb_assert (string != nullptr);
+
+ for (const auto &f : bfd_flag_info)
+ {
+ if (flags & f.value
+ && match_substring (string, f.name))
+ return true;
+ }
+
+ return false;
}
+/* Print the names of all flags set in FLAGS. The names are taken from the
+ BFD_FLAG_INFO global. */
+
static void
print_bfd_flags (flagword flags)
{
- if (flags & SEC_ALLOC)
- printf_filtered (" ALLOC");
- if (flags & SEC_LOAD)
- printf_filtered (" LOAD");
- if (flags & SEC_RELOC)
- printf_filtered (" RELOC");
- if (flags & SEC_READONLY)
- printf_filtered (" READONLY");
- if (flags & SEC_CODE)
- printf_filtered (" CODE");
- if (flags & SEC_DATA)
- printf_filtered (" DATA");
- if (flags & SEC_ROM)
- printf_filtered (" ROM");
- if (flags & SEC_CONSTRUCTOR)
- printf_filtered (" CONSTRUCTOR");
- if (flags & SEC_HAS_CONTENTS)
- printf_filtered (" HAS_CONTENTS");
- if (flags & SEC_NEVER_LOAD)
- printf_filtered (" NEVER_LOAD");
- if (flags & SEC_COFF_SHARED_LIBRARY)
- printf_filtered (" COFF_SHARED_LIBRARY");
- if (flags & SEC_IS_COMMON)
- printf_filtered (" IS_COMMON");
+ for (const auto &f : bfd_flag_info)
+ {
+ if (flags & f.value)
+ printf_filtered (" %s", f.name);
+ }
}
static void
-maint_print_section_info (const char *name, flagword flags,
- CORE_ADDR addr, CORE_ADDR endaddr,
+maint_print_section_info (const char *name, flagword flags,
+ CORE_ADDR addr, CORE_ADDR endaddr,
unsigned long filepos, int addr_size)
{
printf_filtered (" %s", hex_string_custom (addr, addr_size));
return osect;
}
-/* Print information about ASECT from ABFD. Where possible the information for
- ASECT will print the relocated addresses of the section.
+/* Print information about all sections from ABFD, which is the bfd
+ corresponding to OBJFILE. It is fine for OBJFILE to be nullptr, but
+ ABFD must never be nullptr. If OBJFILE is provided then the sections of
+ ABFD will (potentially) be displayed relocated (i.e. the object file was
+ loaded with add-symbol-file and custom offsets were provided).
- ARG is the argument string passed by the user to the top level maintenance
- info sections command. Used for filtering which sections are printed. */
+ HEADER is a string that describes this file, e.g. 'Exec file: ', or
+ 'Core file: '.
+
+ ARG is a string used for filtering which sections are printed, this can
+ be nullptr for no filtering. See the top level 'maint info sections'
+ for a fuller description of the possible filtering strings. */
static void
-print_bfd_section_info_maybe_relocated (bfd *abfd, asection *asect,
- objfile *objfile, const char *arg,
- int index_digits)
+maint_print_all_sections (const char *header, bfd *abfd, objfile *objfile,
+ const char *arg)
{
- gdb_assert (objfile->sections != NULL);
- obj_section *osect
- = maint_obj_section_from_bfd_section (abfd, asect, objfile);
+ puts_filtered (header);
+ wrap_here (" ");
+ printf_filtered ("`%s', ", bfd_get_filename (abfd));
+ wrap_here (" ");
+ printf_filtered (_("file type %s.\n"), bfd_get_target (abfd));
- if (osect->the_bfd_section == NULL)
- print_bfd_section_info (abfd, asect, arg, index_digits);
- else
- print_objfile_section_info (abfd, osect, arg, index_digits);
+ int section_count = gdb_bfd_count_sections (abfd);
+ int digits = index_digits (section_count);
+
+ for (asection *sect : gdb_bfd_sections (abfd))
+ {
+ obj_section *osect = nullptr;
+
+ if (objfile != nullptr)
+ {
+ gdb_assert (objfile->sections != nullptr);
+ osect
+ = maint_obj_section_from_bfd_section (abfd, sect, objfile);
+ if (osect->the_bfd_section == nullptr)
+ osect = nullptr;
+ }
+
+ if (osect == nullptr)
+ print_bfd_section_info (abfd, sect, arg, digits);
+ else
+ print_objfile_section_info (abfd, osect, arg, digits);
+ }
+}
+
+/* The options for the "maintenance info sections" command. */
+
+struct maint_info_sections_opts
+{
+ /* For "-all-objects". */
+ bool all_objects = false;
+};
+
+static const gdb::option::option_def maint_info_sections_option_defs[] = {
+
+ gdb::option::flag_option_def<maint_info_sections_opts> {
+ "all-objects",
+ [] (maint_info_sections_opts *opts) { return &opts->all_objects; },
+ N_("Display information from all loaded object files."),
+ },
+};
+
+/* Create an option_def_group for the "maintenance info sections" options,
+ with CC_OPTS as context. */
+
+static inline gdb::option::option_def_group
+make_maint_info_sections_options_def_group (maint_info_sections_opts *cc_opts)
+{
+ return {{maint_info_sections_option_defs}, cc_opts};
+}
+
+/* Completion for the "maintenance info sections" command. */
+
+static void
+maint_info_sections_completer (struct cmd_list_element *cmd,
+ completion_tracker &tracker,
+ const char *text, const char * /* word */)
+{
+ /* Complete command options. */
+ const auto group = make_maint_info_sections_options_def_group (nullptr);
+ if (gdb::option::complete_options
+ (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group))
+ return;
+ const char *word = advance_to_expression_complete_word_point (tracker, text);
+
+ /* Offer completion for section flags, but not section names. This is
+ only a maintenance command after all, no point going over the top. */
+ std::vector<const char *> flags;
+ for (const auto &f : bfd_flag_info)
+ flags.push_back (f.name);
+ flags.push_back (nullptr);
+ complete_on_enum (tracker, flags.data (), text, word);
}
/* Implement the "maintenance info sections" command. */
static void
maintenance_info_sections (const char *arg, int from_tty)
{
- if (current_program_space->exec_bfd ())
+ /* Check if the "-all-objects" flag was passed. */
+ maint_info_sections_opts opts;
+ const auto group = make_maint_info_sections_options_def_group (&opts);
+ gdb::option::process_options
+ (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group);
+
+ for (objfile *ofile : current_program_space->objfiles ())
{
- bool allobj = false;
-
- printf_filtered (_("Exec file:\n"));
- printf_filtered (" `%s', ",
- bfd_get_filename (current_program_space->exec_bfd ()));
- wrap_here (" ");
- printf_filtered (_("file type %s.\n"),
- bfd_get_target (current_program_space->exec_bfd ()));
-
- /* Only this function cares about the 'ALLOBJ' argument;
- if 'ALLOBJ' is the only argument, discard it rather than
- passing it down to print_objfile_section_info (which
- wouldn't know how to handle it). */
- if (arg && strcmp (arg, "ALLOBJ") == 0)
- {
- arg = NULL;
- allobj = true;
- }
+ if (ofile->obfd == current_program_space->exec_bfd ())
+ maint_print_all_sections (_("Exec file: "), ofile->obfd, ofile, arg);
+ else if (opts.all_objects)
+ maint_print_all_sections (_("Object file: "), ofile->obfd, ofile, arg);
+ }
- for (objfile *ofile : current_program_space->objfiles ())
- {
- if (allobj)
- printf_filtered (_(" Object file: %s\n"),
- bfd_get_filename (ofile->obfd));
- else if (ofile->obfd != current_program_space->exec_bfd ())
- continue;
+ if (core_bfd)
+ maint_print_all_sections (_("Core file: "), core_bfd, nullptr, arg);
+}
- int section_count = gdb_bfd_count_sections (ofile->obfd);
+/* Implement the "maintenance info target-sections" command. */
- for (asection *sect : gdb_bfd_sections (ofile->obfd))
- print_bfd_section_info_maybe_relocated
- (ofile->obfd, sect, ofile, arg, index_digits (section_count));
- }
- }
+static void
+maintenance_info_target_sections (const char *arg, int from_tty)
+{
+ bfd *abfd = nullptr;
+ int digits = 0;
+ const target_section_table *table
+ = target_get_section_table (current_top_target ());
+ if (table == nullptr)
+ return;
- if (core_bfd)
+ for (const target_section &sec : *table)
{
- printf_filtered (_("Core file:\n"));
- printf_filtered (" `%s', ", bfd_get_filename (core_bfd));
- wrap_here (" ");
- printf_filtered (_("file type %s.\n"), bfd_get_target (core_bfd));
+ if (abfd == nullptr || sec.the_bfd_section->owner != abfd)
+ {
+ abfd = sec.the_bfd_section->owner;
+ digits = std::max (index_digits (gdb_bfd_count_sections (abfd)),
+ digits);
+ }
+ }
- int section_count = gdb_bfd_count_sections (core_bfd);
+ struct gdbarch *gdbarch = nullptr;
+ int addr_size = 0;
+ abfd = nullptr;
+ for (const target_section &sec : *table)
+ {
+ if (sec.the_bfd_section->owner != abfd)
+ {
+ abfd = sec.the_bfd_section->owner;
+ gdbarch = gdbarch_from_bfd (abfd);
+ addr_size = gdbarch_addr_bit (gdbarch) / 8;
- for (asection *sect : gdb_bfd_sections (core_bfd))
- print_bfd_section_info (core_bfd, sect, arg,
- index_digits (section_count));
+ printf_filtered (_("From '%s', file type %s:\n"),
+ bfd_get_filename (abfd), bfd_get_target (abfd));
+ }
+ print_bfd_section_info (abfd,
+ sec.the_bfd_section,
+ nullptr,
+ digits);
+ /* The magic '8 + digits' here ensures that the 'Start' is aligned
+ with the output of print_bfd_section_info. */
+ printf_filtered ("%*sStart: %s, End: %s, Owner token: %p\n",
+ (8 + digits), "",
+ hex_string_custom (sec.addr, addr_size),
+ hex_string_custom (sec.endaddr, addr_size),
+ sec.owner);
}
}
maintenance_print_statistics (const char *args, int from_tty)
{
print_objfile_statistics ();
- print_symbol_bcache_statistics ();
}
static void
const char *symbol_offset
= pulongest (address - BMSYMBOL_VALUE_ADDRESS (sym));
- sect = MSYMBOL_OBJ_SECTION(sym.objfile, sym.minsym);
+ sect = sym.obj_section ();
if (sect != NULL)
{
const char *section_name;
&maintenancelist);
add_alias_cmd ("i", "info", class_maintenance, 1, &maintenancelist);
- add_cmd ("sections", class_maintenance, maintenance_info_sections, _("\
+ const auto opts = make_maint_info_sections_options_def_group (nullptr);
+ static std::string maint_info_sections_command_help
+ = gdb::option::build_help (_("\
List the BFD sections of the exec and core files.\n\
-Arguments may be any combination of:\n\
- [one or more section names]\n\
- ALLOC LOAD RELOC READONLY CODE DATA ROM CONSTRUCTOR\n\
- HAS_CONTENTS NEVER_LOAD COFF_SHARED_LIBRARY IS_COMMON\n\
-Sections matching any argument will be listed (no argument\n\
-implies all sections). In addition, the special argument\n\
- ALLOBJ\n\
-lists all sections from all object files, including shared libraries."),
+\n\
+Usage: maintenance info sections [-all-objects] [FILTERS]\n\
+\n\
+FILTERS is a list of words, each word is either:\n\
+ + A section name - any section with this name will be printed, or\n\
+ + A section flag - any section with this flag will be printed. The\n\
+ known flags are:\n\
+ ALLOC LOAD RELOC READONLY CODE DATA ROM CONSTRUCTOR\n\
+ HAS_CONTENTS NEVER_LOAD COFF_SHARED_LIBRARY IS_COMMON\n\
+\n\
+Sections matching any of the FILTERS will be listed (no FILTERS implies\n\
+all sections should be printed).\n\
+\n\
+Options:\n\
+%OPTIONS%"), opts);
+ cmd = add_cmd ("sections", class_maintenance, maintenance_info_sections,
+ maint_info_sections_command_help.c_str (),
+ &maintenanceinfolist);
+ set_cmd_completer_handle_brkchars (cmd, maint_info_sections_completer);
+
+ add_cmd ("target-sections", class_maintenance,
+ maintenance_info_target_sections, _("\
+List GDB's internal section table.\n\
+\n\
+Print the current targets section list. This is a sub-set of all\n\
+sections, from all objects currently loaded. Usually the ALLOC\n\
+sectoins."),
&maintenanceinfolist);
add_basic_prefix_cmd ("print", class_maintenance,
&maintenanceprintlist, "maintenance print ", 0,
&maintenancelist);
+ add_basic_prefix_cmd ("flush", class_maintenance,
+ _("Maintenance command for flushing GDB internal caches."),
+ &maintenanceflushlist, "maintenance flush ", 0,
+ &maintenancelist);
+
add_basic_prefix_cmd ("set", class_maintenance, _("\
Set GDB internal variables used by the GDB maintainer.\n\
Configure variables internal to GDB that aid in GDB's maintenance"),
displayed, following the command's output."),
&maintenancelist);
- add_cmd ("type", class_maintenance, maintenance_print_type, _("\
+ cmd = add_cmd ("type", class_maintenance, maintenance_print_type, _("\
Print a type chain for a given symbol.\n\
For each node in a type chain, print the raw data for each member of\n\
the type structure, and the interpretation of the data."),
&maintenanceprintlist);
+ set_cmd_completer (cmd, expression_completer);
add_cmd ("statistics", class_maintenance, maintenance_print_statistics,
_("Print statistics about internal gdb state."),
projects / deliverable / binutils-gdb.git / blobdiff