mirror of
https://sourceware.org/git/binutils-gdb.git
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bf3386f0c1
The 'maintenance info sections' command currently takes a list of filters on the command line. It can also accept the magic string 'ALLOBJ' which acts more like a command line flag, telling the command to print information about all objfiles. The manual has this to say about the options and filters: ... In addition, 'maint info sections' provides the following command options (which may be arbitrarily combined): ... Implying (to me at least) that I can do this: (gdb) maint info sections ALLOBJ READONLY to list all the read-only sections from all currently loaded object files. Unfortunately, this doesn't work. The READONLY filter will work, but ALLOBJ will not be detected correctly. It would be fairly simple to fix the ALLOBJ detection. However, I dislike this mixing of command options (ALLOBJ) with command data (the filters, e.g. READONLY, etc). As this is a maintenance command, so not really intended for end users, I think we can be a little more aggressive in "fixing" the option parsing. So that's what I do in this commit. The ALLOBJ mechanism is replaced with a real command option (-all-objects). The rest of the command operates just as before. The example above would now become: (gdb) maint info sections -all-objects READONLY The manual has been updated, and I added a NEWS entry to document the change. gdb/ChangeLog: * NEWS: Mention changes to 'maint info sections'. * maint.c (match_substring): Return a bool, fix whitespace issue. (struct single_bfd_flag_info): New struct. (bfd_flag_info): New static global. (match_bfd_flags): Return a bool, use bfd_flag_info. (print_bfd_flags): Use bfd_flag_info. (maint_print_section_info): Delete trailing whitespace. (struct maint_info_sections_opts): New struct. (maint_info_sections_option_defs): New static global. (maint_info_sections_completer): New function. (maintenance_info_sections): Use option parsing mechanism. (_initialize_maint_cmds): Register command completer. gdb/doc/ChangeLog: * gdb.texinfo (Files): Update documentation for 'maint info sections'. gdb/testsuite/ChangeLog: * gdb.base/maint-info-sections.exp: Update expected output, and add additional tests. Again.
1319 lines
38 KiB
C
1319 lines
38 KiB
C
/* Support for GDB maintenance commands.
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Copyright (C) 1992-2021 Free Software Foundation, Inc.
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Written by Fred Fish at Cygnus Support.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "arch-utils.h"
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#include <ctype.h>
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#include <cmath>
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#include <signal.h>
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#include "command.h"
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#include "gdbcmd.h"
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#include "symtab.h"
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#include "block.h"
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#include "gdbtypes.h"
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#include "demangle.h"
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#include "gdbcore.h"
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#include "expression.h" /* For language.h */
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#include "language.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "value.h"
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#include "top.h"
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#include "maint.h"
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#include "gdbsupport/selftest.h"
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#include "cli/cli-decode.h"
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#include "cli/cli-utils.h"
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#include "cli/cli-setshow.h"
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#include "cli/cli-cmds.h"
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#if CXX_STD_THREAD
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#include "gdbsupport/thread-pool.h"
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#endif
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static void maintenance_do_deprecate (const char *, int);
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#ifndef _WIN32
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static void
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maintenance_dump_me (const char *args, int from_tty)
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{
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if (query (_("Should GDB dump core? ")))
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{
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#ifdef __DJGPP__
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/* SIGQUIT by default is ignored, so use SIGABRT instead. */
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signal (SIGABRT, SIG_DFL);
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kill (getpid (), SIGABRT);
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#else
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signal (SIGQUIT, SIG_DFL);
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kill (getpid (), SIGQUIT);
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#endif
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}
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}
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#endif
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/* Stimulate the internal error mechanism that GDB uses when an
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internal problem is detected. Allows testing of the mechanism.
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Also useful when the user wants to drop a core file but not exit
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GDB. */
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static void
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maintenance_internal_error (const char *args, int from_tty)
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{
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internal_error (__FILE__, __LINE__, "%s", (args == NULL ? "" : args));
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}
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/* Stimulate the internal error mechanism that GDB uses when an
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internal problem is detected. Allows testing of the mechanism.
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Also useful when the user wants to drop a core file but not exit
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GDB. */
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static void
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maintenance_internal_warning (const char *args, int from_tty)
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{
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internal_warning (__FILE__, __LINE__, "%s", (args == NULL ? "" : args));
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}
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/* Stimulate the internal error mechanism that GDB uses when an
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demangler problem is detected. Allows testing of the mechanism. */
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static void
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maintenance_demangler_warning (const char *args, int from_tty)
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{
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demangler_warning (__FILE__, __LINE__, "%s", (args == NULL ? "" : args));
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}
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/* Old command to demangle a string. The command has been moved to "demangle".
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It is kept for now because otherwise "mt demangle" gets interpreted as
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"mt demangler-warning" which artificially creates an internal gdb error. */
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static void
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maintenance_demangle (const char *args, int from_tty)
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{
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printf_filtered (_("This command has been moved to \"demangle\".\n"));
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}
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static void
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maintenance_time_display (const char *args, int from_tty)
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{
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if (args == NULL || *args == '\0')
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printf_unfiltered (_("\"maintenance time\" takes a numeric argument.\n"));
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else
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set_per_command_time (strtol (args, NULL, 10));
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}
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static void
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maintenance_space_display (const char *args, int from_tty)
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{
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if (args == NULL || *args == '\0')
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printf_unfiltered ("\"maintenance space\" takes a numeric argument.\n");
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else
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set_per_command_space (strtol (args, NULL, 10));
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}
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/* Mini tokenizing lexer for 'maint info sections' command. */
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static bool
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match_substring (const char *string, const char *substr)
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{
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int substr_len = strlen (substr);
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const char *tok;
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while ((tok = strstr (string, substr)) != NULL)
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{
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/* Got a partial match. Is it a whole word? */
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if (tok == string
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|| tok[-1] == ' '
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|| tok[-1] == '\t')
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{
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/* Token is delimited at the front... */
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if (tok[substr_len] == ' '
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|| tok[substr_len] == '\t'
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|| tok[substr_len] == '\0')
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{
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/* Token is delimited at the rear. Got a whole-word match. */
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return true;
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}
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}
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/* Token didn't match as a whole word. Advance and try again. */
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string = tok + 1;
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}
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return false;
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}
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/* Structure holding information about a single bfd section flag. This is
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used by the "maintenance info sections" command to print the sections,
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and for filtering which sections are printed. */
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struct single_bfd_flag_info
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{
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/* The name of the section. This is what is printed for the flag, and
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what the user enter in order to filter by flag. */
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const char *name;
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/* The bfd defined SEC_* flagword value for this flag. */
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flagword value;
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};
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/* Vector of all the known bfd flags. */
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static const single_bfd_flag_info bfd_flag_info[] =
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{
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{ "ALLOC", SEC_ALLOC },
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{ "LOAD", SEC_LOAD },
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{ "RELOC", SEC_RELOC },
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{ "READONLY", SEC_READONLY },
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{ "CODE", SEC_CODE },
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{ "DATA", SEC_DATA },
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{ "ROM", SEC_ROM },
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{ "CONSTRUCTOR", SEC_CONSTRUCTOR },
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{ "HAS_CONTENTS", SEC_HAS_CONTENTS },
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{ "NEVER_LOAD", SEC_NEVER_LOAD },
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{ "COFF_SHARED_LIBRARY", SEC_COFF_SHARED_LIBRARY },
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{ "IS_COMMON", SEC_IS_COMMON }
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};
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/* For each flag in the global BFD_FLAG_INFO list, if FLAGS has a flag's
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flagword value set, and STRING contains the flag's name then return
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true, otherwise return false. STRING is never nullptr. */
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static bool
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match_bfd_flags (const char *string, flagword flags)
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{
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gdb_assert (string != nullptr);
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for (const auto &f : bfd_flag_info)
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{
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if (flags & f.value
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&& match_substring (string, f.name))
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return true;
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}
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return false;
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}
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/* Print the names of all flags set in FLAGS. The names are taken from the
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BFD_FLAG_INFO global. */
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static void
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print_bfd_flags (flagword flags)
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{
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for (const auto &f : bfd_flag_info)
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{
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if (flags & f.value)
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printf_filtered (" %s", f.name);
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}
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}
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static void
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maint_print_section_info (const char *name, flagword flags,
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CORE_ADDR addr, CORE_ADDR endaddr,
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unsigned long filepos, int addr_size)
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{
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printf_filtered (" %s", hex_string_custom (addr, addr_size));
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printf_filtered ("->%s", hex_string_custom (endaddr, addr_size));
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printf_filtered (" at %s",
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hex_string_custom ((unsigned long) filepos, 8));
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printf_filtered (": %s", name);
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print_bfd_flags (flags);
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printf_filtered ("\n");
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}
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/* Return the number of digits required to display COUNT in decimal.
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Used when pretty printing index numbers to ensure all of the indexes line
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up.*/
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static int
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index_digits (int count)
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{
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return ((int) log10 ((float) count)) + 1;
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}
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/* Helper function to pretty-print the section index of ASECT from ABFD.
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The INDEX_DIGITS is the number of digits in the largest index that will
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be printed, and is used to pretty-print the resulting string. */
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static void
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print_section_index (bfd *abfd,
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asection *asect,
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int index_digits)
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{
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std::string result
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= string_printf (" [%d] ", gdb_bfd_section_index (abfd, asect));
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/* The '+ 4' for the leading and trailing characters. */
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printf_filtered ("%-*s", (index_digits + 4), result.c_str ());
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}
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/* Print information about ASECT from ABFD. The section will be printed using
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the VMA's from the bfd, which will not be the relocated addresses for bfds
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that should be relocated. The information must be printed with the same
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layout as PRINT_OBJFILE_SECTION_INFO below.
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ARG is the argument string passed by the user to the top level maintenance
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info sections command. Used for filtering which sections are printed. */
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static void
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print_bfd_section_info (bfd *abfd, asection *asect, const char *arg,
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int index_digits)
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{
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flagword flags = bfd_section_flags (asect);
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const char *name = bfd_section_name (asect);
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if (arg == NULL || *arg == '\0'
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|| match_substring (arg, name)
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|| match_bfd_flags (arg, flags))
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{
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struct gdbarch *gdbarch = gdbarch_from_bfd (abfd);
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int addr_size = gdbarch_addr_bit (gdbarch) / 8;
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CORE_ADDR addr, endaddr;
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addr = bfd_section_vma (asect);
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endaddr = addr + bfd_section_size (asect);
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print_section_index (abfd, asect, index_digits);
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maint_print_section_info (name, flags, addr, endaddr,
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asect->filepos, addr_size);
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}
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}
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/* Print information about ASECT which is GDB's wrapper around a section
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from ABFD. The information must be printed with the same layout as
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PRINT_BFD_SECTION_INFO above. PRINT_DATA holds information used to
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filter which sections are printed, and for formatting the output.
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ARG is the argument string passed by the user to the top level maintenance
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info sections command. Used for filtering which sections are printed. */
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static void
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print_objfile_section_info (bfd *abfd, struct obj_section *asect,
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const char *arg, int index_digits)
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{
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flagword flags = bfd_section_flags (asect->the_bfd_section);
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const char *name = bfd_section_name (asect->the_bfd_section);
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if (arg == NULL || *arg == '\0'
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|| match_substring (arg, name)
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|| match_bfd_flags (arg, flags))
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{
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struct gdbarch *gdbarch = gdbarch_from_bfd (abfd);
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int addr_size = gdbarch_addr_bit (gdbarch) / 8;
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print_section_index (abfd, asect->the_bfd_section, index_digits);
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maint_print_section_info (name, flags,
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obj_section_addr (asect),
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obj_section_endaddr (asect),
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asect->the_bfd_section->filepos,
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addr_size);
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}
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}
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/* Find an obj_section, GDB's wrapper around a bfd section for ASECTION
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from ABFD. It might be that no such wrapper exists (for example debug
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sections don't have such wrappers) in which case nullptr is returned. */
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static obj_section *
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maint_obj_section_from_bfd_section (bfd *abfd,
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asection *asection,
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objfile *ofile)
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{
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if (ofile->sections == nullptr)
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return nullptr;
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obj_section *osect
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= &ofile->sections[gdb_bfd_section_index (abfd, asection)];
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if (osect >= ofile->sections_end)
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return nullptr;
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return osect;
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}
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/* Print information about all sections from ABFD, which is the bfd
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corresponding to OBJFILE. It is fine for OBJFILE to be nullptr, but
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ABFD must never be nullptr. If OBJFILE is provided then the sections of
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ABFD will (potentially) be displayed relocated (i.e. the object file was
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loaded with add-symbol-file and custom offsets were provided).
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HEADER is a string that describes this file, e.g. 'Exec file: ', or
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'Core file: '.
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ARG is a string used for filtering which sections are printed, this can
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be nullptr for no filtering. See the top level 'maint info sections'
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for a fuller description of the possible filtering strings. */
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static void
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maint_print_all_sections (const char *header, bfd *abfd, objfile *objfile,
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const char *arg)
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{
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puts_filtered (header);
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wrap_here (" ");
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printf_filtered ("`%s', ", bfd_get_filename (abfd));
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wrap_here (" ");
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printf_filtered (_("file type %s.\n"), bfd_get_target (abfd));
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int section_count = gdb_bfd_count_sections (abfd);
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int digits = index_digits (section_count);
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for (asection *sect : gdb_bfd_sections (abfd))
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{
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obj_section *osect = nullptr;
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if (objfile != nullptr)
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{
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gdb_assert (objfile->sections != nullptr);
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osect
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= maint_obj_section_from_bfd_section (abfd, sect, objfile);
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if (osect->the_bfd_section == nullptr)
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osect = nullptr;
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}
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if (osect == nullptr)
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print_bfd_section_info (abfd, sect, arg, digits);
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else
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print_objfile_section_info (abfd, osect, arg, digits);
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}
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}
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/* The options for the "maintenance info sections" command. */
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struct maint_info_sections_opts
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{
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/* For "-all-objects". */
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bool all_objects = false;
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};
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static const gdb::option::option_def maint_info_sections_option_defs[] = {
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gdb::option::flag_option_def<maint_info_sections_opts> {
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"all-objects",
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[] (maint_info_sections_opts *opts) { return &opts->all_objects; },
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N_("Display information from all loaded object files."),
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},
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};
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/* Create an option_def_group for the "maintenance info sections" options,
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with CC_OPTS as context. */
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static inline gdb::option::option_def_group
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make_maint_info_sections_options_def_group (maint_info_sections_opts *cc_opts)
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{
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return {{maint_info_sections_option_defs}, cc_opts};
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}
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/* Completion for the "maintenance info sections" command. */
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static void
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maint_info_sections_completer (struct cmd_list_element *cmd,
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completion_tracker &tracker,
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const char *text, const char * /* word */)
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{
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/* Complete command options. */
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const auto group = make_maint_info_sections_options_def_group (nullptr);
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if (gdb::option::complete_options
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(tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group))
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return;
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const char *word = advance_to_expression_complete_word_point (tracker, text);
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/* Offer completion for section flags, but not section names. This is
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only a maintenance command after all, no point going over the top. */
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std::vector<const char *> flags;
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for (const auto &f : bfd_flag_info)
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flags.push_back (f.name);
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flags.push_back (nullptr);
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complete_on_enum (tracker, flags.data (), text, word);
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}
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|
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/* Implement the "maintenance info sections" command. */
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static void
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maintenance_info_sections (const char *arg, int from_tty)
|
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{
|
||
/* Check if the "-all-objects" flag was passed. */
|
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maint_info_sections_opts opts;
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const auto group = make_maint_info_sections_options_def_group (&opts);
|
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gdb::option::process_options
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(&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group);
|
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||
for (objfile *ofile : current_program_space->objfiles ())
|
||
{
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if (ofile->obfd == current_program_space->exec_bfd ())
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maint_print_all_sections (_("Exec file: "), ofile->obfd, ofile, arg);
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else if (opts.all_objects)
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maint_print_all_sections (_("Object file: "), ofile->obfd, ofile, arg);
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}
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if (core_bfd)
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maint_print_all_sections (_("Core file: "), core_bfd, nullptr, arg);
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}
|
||
|
||
static void
|
||
maintenance_print_statistics (const char *args, int from_tty)
|
||
{
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||
print_objfile_statistics ();
|
||
print_symbol_bcache_statistics ();
|
||
}
|
||
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||
static void
|
||
maintenance_print_architecture (const char *args, int from_tty)
|
||
{
|
||
struct gdbarch *gdbarch = get_current_arch ();
|
||
|
||
if (args == NULL)
|
||
gdbarch_dump (gdbarch, gdb_stdout);
|
||
else
|
||
{
|
||
stdio_file file;
|
||
|
||
if (!file.open (args, "w"))
|
||
perror_with_name (_("maintenance print architecture"));
|
||
gdbarch_dump (gdbarch, &file);
|
||
}
|
||
}
|
||
|
||
/* The "maintenance translate-address" command converts a section and address
|
||
to a symbol. This can be called in two ways:
|
||
maintenance translate-address <secname> <addr>
|
||
or maintenance translate-address <addr>. */
|
||
|
||
static void
|
||
maintenance_translate_address (const char *arg, int from_tty)
|
||
{
|
||
CORE_ADDR address;
|
||
struct obj_section *sect;
|
||
const char *p;
|
||
struct bound_minimal_symbol sym;
|
||
|
||
if (arg == NULL || *arg == 0)
|
||
error (_("requires argument (address or section + address)"));
|
||
|
||
sect = NULL;
|
||
p = arg;
|
||
|
||
if (!isdigit (*p))
|
||
{ /* See if we have a valid section name. */
|
||
while (*p && !isspace (*p)) /* Find end of section name. */
|
||
p++;
|
||
if (*p == '\000') /* End of command? */
|
||
error (_("Need to specify section name and address"));
|
||
|
||
int arg_len = p - arg;
|
||
p = skip_spaces (p + 1);
|
||
|
||
for (objfile *objfile : current_program_space->objfiles ())
|
||
ALL_OBJFILE_OSECTIONS (objfile, sect)
|
||
{
|
||
if (strncmp (sect->the_bfd_section->name, arg, arg_len) == 0)
|
||
goto found;
|
||
}
|
||
|
||
error (_("Unknown section %s."), arg);
|
||
found: ;
|
||
}
|
||
|
||
address = parse_and_eval_address (p);
|
||
|
||
if (sect)
|
||
sym = lookup_minimal_symbol_by_pc_section (address, sect);
|
||
else
|
||
sym = lookup_minimal_symbol_by_pc (address);
|
||
|
||
if (sym.minsym)
|
||
{
|
||
const char *symbol_name = sym.minsym->print_name ();
|
||
const char *symbol_offset
|
||
= pulongest (address - BMSYMBOL_VALUE_ADDRESS (sym));
|
||
|
||
sect = sym.obj_section ();
|
||
if (sect != NULL)
|
||
{
|
||
const char *section_name;
|
||
const char *obj_name;
|
||
|
||
gdb_assert (sect->the_bfd_section && sect->the_bfd_section->name);
|
||
section_name = sect->the_bfd_section->name;
|
||
|
||
gdb_assert (sect->objfile && objfile_name (sect->objfile));
|
||
obj_name = objfile_name (sect->objfile);
|
||
|
||
if (current_program_space->multi_objfile_p ())
|
||
printf_filtered (_("%s + %s in section %s of %s\n"),
|
||
symbol_name, symbol_offset,
|
||
section_name, obj_name);
|
||
else
|
||
printf_filtered (_("%s + %s in section %s\n"),
|
||
symbol_name, symbol_offset, section_name);
|
||
}
|
||
else
|
||
printf_filtered (_("%s + %s\n"), symbol_name, symbol_offset);
|
||
}
|
||
else if (sect)
|
||
printf_filtered (_("no symbol at %s:%s\n"),
|
||
sect->the_bfd_section->name, hex_string (address));
|
||
else
|
||
printf_filtered (_("no symbol at %s\n"), hex_string (address));
|
||
|
||
return;
|
||
}
|
||
|
||
|
||
/* When a command is deprecated the user will be warned the first time
|
||
the command is used. If possible, a replacement will be
|
||
offered. */
|
||
|
||
static void
|
||
maintenance_deprecate (const char *args, int from_tty)
|
||
{
|
||
if (args == NULL || *args == '\0')
|
||
{
|
||
printf_unfiltered (_("\"maintenance deprecate\" takes an argument,\n\
|
||
the command you want to deprecate, and optionally the replacement command\n\
|
||
enclosed in quotes.\n"));
|
||
}
|
||
|
||
maintenance_do_deprecate (args, 1);
|
||
}
|
||
|
||
|
||
static void
|
||
maintenance_undeprecate (const char *args, int from_tty)
|
||
{
|
||
if (args == NULL || *args == '\0')
|
||
{
|
||
printf_unfiltered (_("\"maintenance undeprecate\" takes an argument, \n\
|
||
the command you want to undeprecate.\n"));
|
||
}
|
||
|
||
maintenance_do_deprecate (args, 0);
|
||
}
|
||
|
||
/* You really shouldn't be using this. It is just for the testsuite.
|
||
Rather, you should use deprecate_cmd() when the command is created
|
||
in _initialize_blah().
|
||
|
||
This function deprecates a command and optionally assigns it a
|
||
replacement. */
|
||
|
||
static void
|
||
maintenance_do_deprecate (const char *text, int deprecate)
|
||
{
|
||
struct cmd_list_element *alias = NULL;
|
||
struct cmd_list_element *prefix_cmd = NULL;
|
||
struct cmd_list_element *cmd = NULL;
|
||
|
||
const char *start_ptr = NULL;
|
||
const char *end_ptr = NULL;
|
||
int len;
|
||
char *replacement = NULL;
|
||
|
||
if (text == NULL)
|
||
return;
|
||
|
||
if (!lookup_cmd_composition (text, &alias, &prefix_cmd, &cmd))
|
||
{
|
||
printf_filtered (_("Can't find command '%s' to deprecate.\n"), text);
|
||
return;
|
||
}
|
||
|
||
if (deprecate)
|
||
{
|
||
/* Look for a replacement command. */
|
||
start_ptr = strchr (text, '\"');
|
||
if (start_ptr != NULL)
|
||
{
|
||
start_ptr++;
|
||
end_ptr = strrchr (start_ptr, '\"');
|
||
if (end_ptr != NULL)
|
||
{
|
||
len = end_ptr - start_ptr;
|
||
replacement = savestring (start_ptr, len);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!start_ptr || !end_ptr)
|
||
replacement = NULL;
|
||
|
||
|
||
/* If they used an alias, we only want to deprecate the alias.
|
||
|
||
Note the MALLOCED_REPLACEMENT test. If the command's replacement
|
||
string was allocated at compile time we don't want to free the
|
||
memory. */
|
||
if (alias)
|
||
{
|
||
if (alias->malloced_replacement)
|
||
xfree ((char *) alias->replacement);
|
||
|
||
if (deprecate)
|
||
{
|
||
alias->deprecated_warn_user = 1;
|
||
alias->cmd_deprecated = 1;
|
||
}
|
||
else
|
||
{
|
||
alias->deprecated_warn_user = 0;
|
||
alias->cmd_deprecated = 0;
|
||
}
|
||
alias->replacement = replacement;
|
||
alias->malloced_replacement = 1;
|
||
return;
|
||
}
|
||
else if (cmd)
|
||
{
|
||
if (cmd->malloced_replacement)
|
||
xfree ((char *) cmd->replacement);
|
||
|
||
if (deprecate)
|
||
{
|
||
cmd->deprecated_warn_user = 1;
|
||
cmd->cmd_deprecated = 1;
|
||
}
|
||
else
|
||
{
|
||
cmd->deprecated_warn_user = 0;
|
||
cmd->cmd_deprecated = 0;
|
||
}
|
||
cmd->replacement = replacement;
|
||
cmd->malloced_replacement = 1;
|
||
return;
|
||
}
|
||
xfree (replacement);
|
||
}
|
||
|
||
/* Maintenance set/show framework. */
|
||
|
||
struct cmd_list_element *maintenance_set_cmdlist;
|
||
struct cmd_list_element *maintenance_show_cmdlist;
|
||
|
||
/* "maintenance with" command. */
|
||
|
||
static void
|
||
maintenance_with_cmd (const char *args, int from_tty)
|
||
{
|
||
with_command_1 ("maintenance set ", maintenance_set_cmdlist, args, from_tty);
|
||
}
|
||
|
||
/* "maintenance with" command completer. */
|
||
|
||
static void
|
||
maintenance_with_cmd_completer (struct cmd_list_element *ignore,
|
||
completion_tracker &tracker,
|
||
const char *text, const char * /*word*/)
|
||
{
|
||
with_command_completer_1 ("maintenance set ", tracker, text);
|
||
}
|
||
|
||
/* Profiling support. */
|
||
|
||
static bool maintenance_profile_p;
|
||
static void
|
||
show_maintenance_profile_p (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Internal profiling is %s.\n"), value);
|
||
}
|
||
|
||
#ifdef HAVE__ETEXT
|
||
extern char _etext;
|
||
#define TEXTEND &_etext
|
||
#elif defined (HAVE_ETEXT)
|
||
extern char etext;
|
||
#define TEXTEND &etext
|
||
#endif
|
||
|
||
#if defined (HAVE_MONSTARTUP) && defined (HAVE__MCLEANUP) && defined (TEXTEND)
|
||
|
||
static int profiling_state;
|
||
|
||
EXTERN_C void _mcleanup (void);
|
||
|
||
static void
|
||
mcleanup_wrapper (void)
|
||
{
|
||
if (profiling_state)
|
||
_mcleanup ();
|
||
}
|
||
|
||
EXTERN_C void monstartup (unsigned long, unsigned long);
|
||
extern int main ();
|
||
|
||
static void
|
||
maintenance_set_profile_cmd (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
if (maintenance_profile_p == profiling_state)
|
||
return;
|
||
|
||
profiling_state = maintenance_profile_p;
|
||
|
||
if (maintenance_profile_p)
|
||
{
|
||
static int profiling_initialized;
|
||
|
||
if (!profiling_initialized)
|
||
{
|
||
atexit (mcleanup_wrapper);
|
||
profiling_initialized = 1;
|
||
}
|
||
|
||
/* "main" is now always the first function in the text segment, so use
|
||
its address for monstartup. */
|
||
monstartup ((unsigned long) &main, (unsigned long) TEXTEND);
|
||
}
|
||
else
|
||
{
|
||
extern void _mcleanup (void);
|
||
|
||
_mcleanup ();
|
||
}
|
||
}
|
||
#else
|
||
static void
|
||
maintenance_set_profile_cmd (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
error (_("Profiling support is not available on this system."));
|
||
}
|
||
#endif
|
||
|
||
static int n_worker_threads = -1;
|
||
|
||
/* Update the thread pool for the desired number of threads. */
|
||
static void
|
||
update_thread_pool_size ()
|
||
{
|
||
#if CXX_STD_THREAD
|
||
int n_threads = n_worker_threads;
|
||
|
||
if (n_threads < 0)
|
||
n_threads = std::thread::hardware_concurrency ();
|
||
|
||
gdb::thread_pool::g_thread_pool->set_thread_count (n_threads);
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
maintenance_set_worker_threads (const char *args, int from_tty,
|
||
struct cmd_list_element *c)
|
||
{
|
||
update_thread_pool_size ();
|
||
}
|
||
|
||
|
||
/* If true, display time usage both at startup and for each command. */
|
||
|
||
static bool per_command_time;
|
||
|
||
/* If true, display space usage both at startup and for each command. */
|
||
|
||
static bool per_command_space;
|
||
|
||
/* If true, display basic symtab stats for each command. */
|
||
|
||
static bool per_command_symtab;
|
||
|
||
/* mt per-command commands. */
|
||
|
||
static struct cmd_list_element *per_command_setlist;
|
||
static struct cmd_list_element *per_command_showlist;
|
||
|
||
/* Set whether to display time statistics to NEW_VALUE
|
||
(non-zero means true). */
|
||
|
||
void
|
||
set_per_command_time (int new_value)
|
||
{
|
||
per_command_time = new_value;
|
||
}
|
||
|
||
/* Set whether to display space statistics to NEW_VALUE
|
||
(non-zero means true). */
|
||
|
||
void
|
||
set_per_command_space (int new_value)
|
||
{
|
||
per_command_space = new_value;
|
||
}
|
||
|
||
/* Count the number of symtabs and blocks. */
|
||
|
||
static void
|
||
count_symtabs_and_blocks (int *nr_symtabs_ptr, int *nr_compunit_symtabs_ptr,
|
||
int *nr_blocks_ptr)
|
||
{
|
||
int nr_symtabs = 0;
|
||
int nr_compunit_symtabs = 0;
|
||
int nr_blocks = 0;
|
||
|
||
/* When collecting statistics during startup, this is called before
|
||
pretty much anything in gdb has been initialized, and thus
|
||
current_program_space may be NULL. */
|
||
if (current_program_space != NULL)
|
||
{
|
||
for (objfile *o : current_program_space->objfiles ())
|
||
{
|
||
for (compunit_symtab *cu : o->compunits ())
|
||
{
|
||
++nr_compunit_symtabs;
|
||
nr_blocks += BLOCKVECTOR_NBLOCKS (COMPUNIT_BLOCKVECTOR (cu));
|
||
nr_symtabs += std::distance (compunit_filetabs (cu).begin (),
|
||
compunit_filetabs (cu).end ());
|
||
}
|
||
}
|
||
}
|
||
|
||
*nr_symtabs_ptr = nr_symtabs;
|
||
*nr_compunit_symtabs_ptr = nr_compunit_symtabs;
|
||
*nr_blocks_ptr = nr_blocks;
|
||
}
|
||
|
||
/* As indicated by display_time and display_space, report GDB's
|
||
elapsed time and space usage from the base time and space recorded
|
||
in this object. */
|
||
|
||
scoped_command_stats::~scoped_command_stats ()
|
||
{
|
||
/* Early exit if we're not reporting any stats. It can be expensive to
|
||
compute the pre-command values so don't collect them at all if we're
|
||
not reporting stats. Alas this doesn't work in the startup case because
|
||
we don't know yet whether we will be reporting the stats. For the
|
||
startup case collect the data anyway (it should be cheap at this point),
|
||
and leave it to the reporter to decide whether to print them. */
|
||
if (m_msg_type
|
||
&& !per_command_time
|
||
&& !per_command_space
|
||
&& !per_command_symtab)
|
||
return;
|
||
|
||
if (m_time_enabled && per_command_time)
|
||
{
|
||
print_time (_("command finished"));
|
||
|
||
using namespace std::chrono;
|
||
|
||
run_time_clock::duration cmd_time
|
||
= run_time_clock::now () - m_start_cpu_time;
|
||
|
||
steady_clock::duration wall_time
|
||
= steady_clock::now () - m_start_wall_time;
|
||
/* Subtract time spend in prompt_for_continue from walltime. */
|
||
wall_time -= get_prompt_for_continue_wait_time ();
|
||
|
||
printf_unfiltered (!m_msg_type
|
||
? _("Startup time: %.6f (cpu), %.6f (wall)\n")
|
||
: _("Command execution time: %.6f (cpu), %.6f (wall)\n"),
|
||
duration<double> (cmd_time).count (),
|
||
duration<double> (wall_time).count ());
|
||
}
|
||
|
||
if (m_space_enabled && per_command_space)
|
||
{
|
||
#ifdef HAVE_USEFUL_SBRK
|
||
char *lim = (char *) sbrk (0);
|
||
|
||
long space_now = lim - lim_at_start;
|
||
long space_diff = space_now - m_start_space;
|
||
|
||
printf_unfiltered (!m_msg_type
|
||
? _("Space used: %ld (%s%ld during startup)\n")
|
||
: _("Space used: %ld (%s%ld for this command)\n"),
|
||
space_now,
|
||
(space_diff >= 0 ? "+" : ""),
|
||
space_diff);
|
||
#endif
|
||
}
|
||
|
||
if (m_symtab_enabled && per_command_symtab)
|
||
{
|
||
int nr_symtabs, nr_compunit_symtabs, nr_blocks;
|
||
|
||
count_symtabs_and_blocks (&nr_symtabs, &nr_compunit_symtabs, &nr_blocks);
|
||
printf_unfiltered (_("#symtabs: %d (+%d),"
|
||
" #compunits: %d (+%d),"
|
||
" #blocks: %d (+%d)\n"),
|
||
nr_symtabs,
|
||
nr_symtabs - m_start_nr_symtabs,
|
||
nr_compunit_symtabs,
|
||
(nr_compunit_symtabs
|
||
- m_start_nr_compunit_symtabs),
|
||
nr_blocks,
|
||
nr_blocks - m_start_nr_blocks);
|
||
}
|
||
}
|
||
|
||
scoped_command_stats::scoped_command_stats (bool msg_type)
|
||
: m_msg_type (msg_type)
|
||
{
|
||
if (!m_msg_type || per_command_space)
|
||
{
|
||
#ifdef HAVE_USEFUL_SBRK
|
||
char *lim = (char *) sbrk (0);
|
||
m_start_space = lim - lim_at_start;
|
||
m_space_enabled = 1;
|
||
#endif
|
||
}
|
||
else
|
||
m_space_enabled = 0;
|
||
|
||
if (msg_type == 0 || per_command_time)
|
||
{
|
||
using namespace std::chrono;
|
||
|
||
m_start_cpu_time = run_time_clock::now ();
|
||
m_start_wall_time = steady_clock::now ();
|
||
m_time_enabled = 1;
|
||
|
||
if (per_command_time)
|
||
print_time (_("command started"));
|
||
}
|
||
else
|
||
m_time_enabled = 0;
|
||
|
||
if (msg_type == 0 || per_command_symtab)
|
||
{
|
||
int nr_symtabs, nr_compunit_symtabs, nr_blocks;
|
||
|
||
count_symtabs_and_blocks (&nr_symtabs, &nr_compunit_symtabs, &nr_blocks);
|
||
m_start_nr_symtabs = nr_symtabs;
|
||
m_start_nr_compunit_symtabs = nr_compunit_symtabs;
|
||
m_start_nr_blocks = nr_blocks;
|
||
m_symtab_enabled = 1;
|
||
}
|
||
else
|
||
m_symtab_enabled = 0;
|
||
|
||
/* Initialize timer to keep track of how long we waited for the user. */
|
||
reset_prompt_for_continue_wait_time ();
|
||
}
|
||
|
||
/* See maint.h. */
|
||
|
||
void
|
||
scoped_command_stats::print_time (const char *msg)
|
||
{
|
||
using namespace std::chrono;
|
||
|
||
auto now = system_clock::now ();
|
||
auto ticks = now.time_since_epoch ().count () / (1000 * 1000);
|
||
auto millis = ticks % 1000;
|
||
|
||
std::time_t as_time = system_clock::to_time_t (now);
|
||
struct tm tm;
|
||
localtime_r (&as_time, &tm);
|
||
|
||
char out[100];
|
||
strftime (out, sizeof (out), "%F %H:%M:%S", &tm);
|
||
|
||
printf_unfiltered ("%s.%03d - %s\n", out, (int) millis, msg);
|
||
}
|
||
|
||
/* Handle unknown "mt set per-command" arguments.
|
||
In this case have "mt set per-command on|off" affect every setting. */
|
||
|
||
static void
|
||
set_per_command_cmd (const char *args, int from_tty)
|
||
{
|
||
struct cmd_list_element *list;
|
||
int val;
|
||
|
||
val = parse_cli_boolean_value (args);
|
||
if (val < 0)
|
||
error (_("Bad value for 'mt set per-command no'."));
|
||
|
||
for (list = per_command_setlist; list != NULL; list = list->next)
|
||
if (list->var_type == var_boolean)
|
||
{
|
||
gdb_assert (list->type == set_cmd);
|
||
do_set_command (args, from_tty, list);
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* The "maintenance selftest" command. */
|
||
|
||
static void
|
||
maintenance_selftest (const char *args, int from_tty)
|
||
{
|
||
#if GDB_SELF_TEST
|
||
gdb_argv argv (args);
|
||
selftests::run_tests (argv.as_array_view ());
|
||
#else
|
||
printf_filtered (_("\
|
||
Selftests have been disabled for this build.\n"));
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
maintenance_info_selftests (const char *arg, int from_tty)
|
||
{
|
||
#if GDB_SELF_TEST
|
||
printf_filtered ("Registered selftests:\n");
|
||
selftests::for_each_selftest ([] (const std::string &name) {
|
||
printf_filtered (" - %s\n", name.c_str ());
|
||
});
|
||
#else
|
||
printf_filtered (_("\
|
||
Selftests have been disabled for this build.\n"));
|
||
#endif
|
||
}
|
||
|
||
|
||
void _initialize_maint_cmds ();
|
||
void
|
||
_initialize_maint_cmds ()
|
||
{
|
||
struct cmd_list_element *cmd;
|
||
|
||
add_basic_prefix_cmd ("maintenance", class_maintenance, _("\
|
||
Commands for use by GDB maintainers.\n\
|
||
Includes commands to dump specific internal GDB structures in\n\
|
||
a human readable form, to cause GDB to deliberately dump core, etc."),
|
||
&maintenancelist, "maintenance ", 0,
|
||
&cmdlist);
|
||
|
||
add_com_alias ("mt", "maintenance", class_maintenance, 1);
|
||
|
||
add_basic_prefix_cmd ("info", class_maintenance, _("\
|
||
Commands for showing internal info about the program being debugged."),
|
||
&maintenanceinfolist, "maintenance info ", 0,
|
||
&maintenancelist);
|
||
add_alias_cmd ("i", "info", class_maintenance, 1, &maintenancelist);
|
||
|
||
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\
|
||
\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_basic_prefix_cmd ("print", class_maintenance,
|
||
_("Maintenance command for printing GDB internal state."),
|
||
&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"),
|
||
&maintenance_set_cmdlist, "maintenance set ",
|
||
0/*allow-unknown*/,
|
||
&maintenancelist);
|
||
|
||
add_show_prefix_cmd ("show", class_maintenance, _("\
|
||
Show GDB internal variables used by the GDB maintainer.\n\
|
||
Configure variables internal to GDB that aid in GDB's maintenance"),
|
||
&maintenance_show_cmdlist, "maintenance show ",
|
||
0/*allow-unknown*/,
|
||
&maintenancelist);
|
||
|
||
cmd = add_cmd ("with", class_maintenance, maintenance_with_cmd, _("\
|
||
Like \"with\", but works with \"maintenance set\" variables.\n\
|
||
Usage: maintenance with SETTING [VALUE] [-- COMMAND]\n\
|
||
With no COMMAND, repeats the last executed command.\n\
|
||
SETTING is any setting you can change with the \"maintenance set\"\n\
|
||
subcommands."),
|
||
&maintenancelist);
|
||
set_cmd_completer_handle_brkchars (cmd, maintenance_with_cmd_completer);
|
||
|
||
#ifndef _WIN32
|
||
add_cmd ("dump-me", class_maintenance, maintenance_dump_me, _("\
|
||
Get fatal error; make debugger dump its core.\n\
|
||
GDB sets its handling of SIGQUIT back to SIG_DFL and then sends\n\
|
||
itself a SIGQUIT signal."),
|
||
&maintenancelist);
|
||
#endif
|
||
|
||
add_cmd ("internal-error", class_maintenance,
|
||
maintenance_internal_error, _("\
|
||
Give GDB an internal error.\n\
|
||
Cause GDB to behave as if an internal error was detected."),
|
||
&maintenancelist);
|
||
|
||
add_cmd ("internal-warning", class_maintenance,
|
||
maintenance_internal_warning, _("\
|
||
Give GDB an internal warning.\n\
|
||
Cause GDB to behave as if an internal warning was reported."),
|
||
&maintenancelist);
|
||
|
||
add_cmd ("demangler-warning", class_maintenance,
|
||
maintenance_demangler_warning, _("\
|
||
Give GDB a demangler warning.\n\
|
||
Cause GDB to behave as if a demangler warning was reported."),
|
||
&maintenancelist);
|
||
|
||
cmd = add_cmd ("demangle", class_maintenance, maintenance_demangle, _("\
|
||
This command has been moved to \"demangle\"."),
|
||
&maintenancelist);
|
||
deprecate_cmd (cmd, "demangle");
|
||
|
||
add_prefix_cmd ("per-command", class_maintenance, set_per_command_cmd, _("\
|
||
Per-command statistics settings."),
|
||
&per_command_setlist, "maintenance set per-command ",
|
||
1/*allow-unknown*/, &maintenance_set_cmdlist);
|
||
|
||
add_show_prefix_cmd ("per-command", class_maintenance, _("\
|
||
Show per-command statistics settings."),
|
||
&per_command_showlist, "maintenance show per-command ",
|
||
0/*allow-unknown*/, &maintenance_show_cmdlist);
|
||
|
||
add_setshow_boolean_cmd ("time", class_maintenance,
|
||
&per_command_time, _("\
|
||
Set whether to display per-command execution time."), _("\
|
||
Show whether to display per-command execution time."),
|
||
_("\
|
||
If enabled, the execution time for each command will be\n\
|
||
displayed following the command's output."),
|
||
NULL, NULL,
|
||
&per_command_setlist, &per_command_showlist);
|
||
|
||
add_setshow_boolean_cmd ("space", class_maintenance,
|
||
&per_command_space, _("\
|
||
Set whether to display per-command space usage."), _("\
|
||
Show whether to display per-command space usage."),
|
||
_("\
|
||
If enabled, the space usage for each command will be\n\
|
||
displayed following the command's output."),
|
||
NULL, NULL,
|
||
&per_command_setlist, &per_command_showlist);
|
||
|
||
add_setshow_boolean_cmd ("symtab", class_maintenance,
|
||
&per_command_symtab, _("\
|
||
Set whether to display per-command symtab statistics."), _("\
|
||
Show whether to display per-command symtab statistics."),
|
||
_("\
|
||
If enabled, the basic symtab statistics for each command will be\n\
|
||
displayed following the command's output."),
|
||
NULL, NULL,
|
||
&per_command_setlist, &per_command_showlist);
|
||
|
||
/* This is equivalent to "mt set per-command time on".
|
||
Kept because some people are used to typing "mt time 1". */
|
||
add_cmd ("time", class_maintenance, maintenance_time_display, _("\
|
||
Set the display of time usage.\n\
|
||
If nonzero, will cause the execution time for each command to be\n\
|
||
displayed, following the command's output."),
|
||
&maintenancelist);
|
||
|
||
/* This is equivalent to "mt set per-command space on".
|
||
Kept because some people are used to typing "mt space 1". */
|
||
add_cmd ("space", class_maintenance, maintenance_space_display, _("\
|
||
Set the display of space usage.\n\
|
||
If nonzero, will cause the execution space for each command to be\n\
|
||
displayed, following the command's output."),
|
||
&maintenancelist);
|
||
|
||
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."),
|
||
&maintenanceprintlist);
|
||
|
||
add_cmd ("architecture", class_maintenance,
|
||
maintenance_print_architecture, _("\
|
||
Print the internal architecture configuration.\n\
|
||
Takes an optional file parameter."),
|
||
&maintenanceprintlist);
|
||
|
||
add_basic_prefix_cmd ("check", class_maintenance, _("\
|
||
Commands for checking internal gdb state."),
|
||
&maintenancechecklist, "maintenance check ", 0,
|
||
&maintenancelist);
|
||
|
||
add_cmd ("translate-address", class_maintenance,
|
||
maintenance_translate_address,
|
||
_("Translate a section name and address to a symbol."),
|
||
&maintenancelist);
|
||
|
||
add_cmd ("deprecate", class_maintenance, maintenance_deprecate, _("\
|
||
Deprecate a command (for testing purposes).\n\
|
||
Usage: maintenance deprecate COMMANDNAME [\"REPLACEMENT\"]\n\
|
||
This is used by the testsuite to check the command deprecator.\n\
|
||
You probably shouldn't use this,\n\
|
||
rather you should use the C function deprecate_cmd()."), &maintenancelist);
|
||
|
||
add_cmd ("undeprecate", class_maintenance, maintenance_undeprecate, _("\
|
||
Undeprecate a command (for testing purposes).\n\
|
||
Usage: maintenance undeprecate COMMANDNAME\n\
|
||
This is used by the testsuite to check the command deprecator.\n\
|
||
You probably shouldn't use this."),
|
||
&maintenancelist);
|
||
|
||
add_cmd ("selftest", class_maintenance, maintenance_selftest, _("\
|
||
Run gdb's unit tests.\n\
|
||
Usage: maintenance selftest [FILTER]\n\
|
||
This will run any unit tests that were built in to gdb.\n\
|
||
If a filter is given, only the tests with that value in their name will ran."),
|
||
&maintenancelist);
|
||
|
||
add_cmd ("selftests", class_maintenance, maintenance_info_selftests,
|
||
_("List the registered selftests."), &maintenanceinfolist);
|
||
|
||
add_setshow_boolean_cmd ("profile", class_maintenance,
|
||
&maintenance_profile_p, _("\
|
||
Set internal profiling."), _("\
|
||
Show internal profiling."), _("\
|
||
When enabled GDB is profiled."),
|
||
maintenance_set_profile_cmd,
|
||
show_maintenance_profile_p,
|
||
&maintenance_set_cmdlist,
|
||
&maintenance_show_cmdlist);
|
||
|
||
add_setshow_zuinteger_unlimited_cmd ("worker-threads",
|
||
class_maintenance,
|
||
&n_worker_threads, _("\
|
||
Set the number of worker threads GDB can use."), _("\
|
||
Show the number of worker threads GDB can use."), _("\
|
||
GDB may use multiple threads to speed up certain CPU-intensive operations,\n\
|
||
such as demangling symbol names."),
|
||
maintenance_set_worker_threads, NULL,
|
||
&maintenance_set_cmdlist,
|
||
&maintenance_show_cmdlist);
|
||
|
||
update_thread_pool_size ();
|
||
}
|