1951 lines
55 KiB
C
1951 lines
55 KiB
C
/* GDB CLI commands.
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Copyright (C) 2000-2018 Free Software Foundation, Inc.
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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 "readline/readline.h"
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#include "readline/tilde.h"
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#include "completer.h"
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#include "target.h" /* For baud_rate, remote_debug and remote_timeout. */
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#include "gdb_wait.h" /* For shell escape implementation. */
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#include "gdb_regex.h" /* Used by apropos_command. */
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#include "gdb_vfork.h"
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#include "linespec.h"
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#include "expression.h"
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#include "frame.h"
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#include "value.h"
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#include "language.h"
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#include "filenames.h" /* For DOSish file names. */
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#include "objfiles.h"
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#include "source.h"
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#include "disasm.h"
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#include "tracepoint.h"
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#include "filestuff.h"
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#include "location.h"
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#include "ui-out.h"
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#include "top.h"
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#include "cli/cli-decode.h"
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#include "cli/cli-script.h"
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#include "cli/cli-setshow.h"
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#include "cli/cli-cmds.h"
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#include "cli/cli-utils.h"
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#include "extension.h"
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#ifdef TUI
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#include "tui/tui.h" /* For tui_active et.al. */
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#endif
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#include <fcntl.h>
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#include <algorithm>
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#include <string>
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/* Prototypes for local utility functions */
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static void print_sal_location (const symtab_and_line &sal);
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static void ambiguous_line_spec (gdb::array_view<const symtab_and_line> sals,
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const char *format, ...)
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ATTRIBUTE_PRINTF (2, 3);
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static void filter_sals (std::vector<symtab_and_line> &);
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/* Limit the call depth of user-defined commands */
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unsigned int max_user_call_depth;
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/* Define all cmd_list_elements. */
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/* Chain containing all defined commands. */
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struct cmd_list_element *cmdlist;
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/* Chain containing all defined info subcommands. */
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struct cmd_list_element *infolist;
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/* Chain containing all defined enable subcommands. */
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struct cmd_list_element *enablelist;
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/* Chain containing all defined disable subcommands. */
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struct cmd_list_element *disablelist;
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/* Chain containing all defined stop subcommands. */
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struct cmd_list_element *stoplist;
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/* Chain containing all defined delete subcommands. */
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struct cmd_list_element *deletelist;
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/* Chain containing all defined detach subcommands. */
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struct cmd_list_element *detachlist;
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/* Chain containing all defined kill subcommands. */
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struct cmd_list_element *killlist;
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/* Chain containing all defined set subcommands */
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struct cmd_list_element *setlist;
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/* Chain containing all defined unset subcommands */
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struct cmd_list_element *unsetlist;
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/* Chain containing all defined show subcommands. */
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struct cmd_list_element *showlist;
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/* Chain containing all defined \"set history\". */
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struct cmd_list_element *sethistlist;
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/* Chain containing all defined \"show history\". */
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struct cmd_list_element *showhistlist;
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/* Chain containing all defined \"unset history\". */
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struct cmd_list_element *unsethistlist;
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/* Chain containing all defined maintenance subcommands. */
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struct cmd_list_element *maintenancelist;
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/* Chain containing all defined "maintenance info" subcommands. */
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struct cmd_list_element *maintenanceinfolist;
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/* Chain containing all defined "maintenance print" subcommands. */
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struct cmd_list_element *maintenanceprintlist;
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/* Chain containing all defined "maintenance check" subcommands. */
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struct cmd_list_element *maintenancechecklist;
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struct cmd_list_element *setprintlist;
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struct cmd_list_element *showprintlist;
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struct cmd_list_element *setdebuglist;
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struct cmd_list_element *showdebuglist;
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struct cmd_list_element *setchecklist;
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struct cmd_list_element *showchecklist;
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/* Command tracing state. */
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int source_verbose = 0;
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int trace_commands = 0;
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/* 'script-extension' option support. */
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static const char script_ext_off[] = "off";
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static const char script_ext_soft[] = "soft";
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static const char script_ext_strict[] = "strict";
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static const char *const script_ext_enums[] = {
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script_ext_off,
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script_ext_soft,
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script_ext_strict,
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NULL
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};
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static const char *script_ext_mode = script_ext_soft;
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/* Utility used everywhere when at least one argument is needed and
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none is supplied. */
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void
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error_no_arg (const char *why)
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{
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error (_("Argument required (%s)."), why);
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}
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/* The "info" command is defined as a prefix, with allow_unknown = 0.
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Therefore, its own definition is called only for "info" with no
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args. */
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static void
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info_command (const char *arg, int from_tty)
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{
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printf_unfiltered (_("\"info\" must be followed by "
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"the name of an info command.\n"));
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help_list (infolist, "info ", all_commands, gdb_stdout);
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}
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/* The "show" command with no arguments shows all the settings. */
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static void
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show_command (const char *arg, int from_tty)
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{
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cmd_show_list (showlist, from_tty, "");
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}
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/* Provide documentation on command or list given by COMMAND. FROM_TTY
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is ignored. */
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static void
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help_command (const char *command, int from_tty)
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{
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help_cmd (command, gdb_stdout);
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}
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/* Note: The "complete" command is used by Emacs to implement completion.
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[Is that why this function writes output with *_unfiltered?] */
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static void
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complete_command (const char *arg, int from_tty)
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{
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dont_repeat ();
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if (max_completions == 0)
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{
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/* Only print this for non-mi frontends. An MI frontend may not
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be able to handle this. */
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if (!current_uiout->is_mi_like_p ())
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{
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printf_unfiltered (_("max-completions is zero,"
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" completion is disabled.\n"));
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}
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return;
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}
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if (arg == NULL)
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arg = "";
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completion_tracker tracker_handle_brkchars;
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completion_tracker tracker_handle_completions;
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completion_tracker *tracker;
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int quote_char = '\0';
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const char *word;
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TRY
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{
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word = completion_find_completion_word (tracker_handle_brkchars,
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arg, "e_char);
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/* Completers that provide a custom word point in the
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handle_brkchars phase also compute their completions then.
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Completers that leave the completion word handling to readline
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must be called twice. */
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if (tracker_handle_brkchars.use_custom_word_point ())
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tracker = &tracker_handle_brkchars;
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else
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{
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complete_line (tracker_handle_completions, word, arg, strlen (arg));
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tracker = &tracker_handle_completions;
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}
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}
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CATCH (ex, RETURN_MASK_ALL)
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{
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return;
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}
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END_CATCH
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std::string arg_prefix (arg, word - arg);
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completion_result result
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= tracker->build_completion_result (word, word - arg, strlen (arg));
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if (result.number_matches != 0)
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{
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if (result.number_matches == 1)
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printf_unfiltered ("%s%s\n", arg_prefix.c_str (), result.match_list[0]);
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else
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{
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result.sort_match_list ();
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for (size_t i = 0; i < result.number_matches; i++)
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{
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printf_unfiltered ("%s%s",
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arg_prefix.c_str (),
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result.match_list[i + 1]);
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if (quote_char)
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printf_unfiltered ("%c", quote_char);
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printf_unfiltered ("\n");
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}
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}
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if (result.number_matches == max_completions)
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{
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/* ARG_PREFIX and WORD are included in the output so that emacs
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will include the message in the output. */
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printf_unfiltered (_("%s%s %s\n"),
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arg_prefix.c_str (), word,
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get_max_completions_reached_message ());
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}
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}
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}
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int
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is_complete_command (struct cmd_list_element *c)
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{
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return cmd_cfunc_eq (c, complete_command);
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}
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static void
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show_version (const char *args, int from_tty)
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{
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print_gdb_version (gdb_stdout, true);
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printf_filtered ("\n");
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}
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static void
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show_configuration (const char *args, int from_tty)
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{
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print_gdb_configuration (gdb_stdout);
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}
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/* Handle the quit command. */
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void
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quit_command (const char *args, int from_tty)
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{
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int exit_code = 0;
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/* An optional expression may be used to cause gdb to terminate with
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the value of that expression. */
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if (args)
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{
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struct value *val = parse_and_eval (args);
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exit_code = (int) value_as_long (val);
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}
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if (!quit_confirm ())
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error (_("Not confirmed."));
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query_if_trace_running (from_tty);
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quit_force (args ? &exit_code : NULL, from_tty);
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}
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static void
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pwd_command (const char *args, int from_tty)
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{
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if (args)
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error (_("The \"pwd\" command does not take an argument: %s"), args);
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gdb::unique_xmalloc_ptr<char> cwd (getcwd (NULL, 0));
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if (cwd == NULL)
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error (_("Error finding name of working directory: %s"),
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safe_strerror (errno));
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if (strcmp (cwd.get (), current_directory) != 0)
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printf_unfiltered (_("Working directory %s\n (canonically %s).\n"),
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current_directory, cwd.get ());
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else
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printf_unfiltered (_("Working directory %s.\n"), current_directory);
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}
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void
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cd_command (const char *dir, int from_tty)
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{
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int len;
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/* Found something other than leading repetitions of "/..". */
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int found_real_path;
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char *p;
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/* If the new directory is absolute, repeat is a no-op; if relative,
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repeat might be useful but is more likely to be a mistake. */
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dont_repeat ();
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gdb::unique_xmalloc_ptr<char> dir_holder
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(tilde_expand (dir != NULL ? dir : "~"));
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dir = dir_holder.get ();
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if (chdir (dir) < 0)
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perror_with_name (dir);
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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/* There's too much mess with DOSish names like "d:", "d:.",
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"d:./foo" etc. Instead of having lots of special #ifdef'ed code,
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simply get the canonicalized name of the current directory. */
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gdb::unique_xmalloc_ptr<char> cwd (getcwd (NULL, 0));
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dir = cwd.get ();
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#endif
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len = strlen (dir);
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if (IS_DIR_SEPARATOR (dir[len - 1]))
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{
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/* Remove the trailing slash unless this is a root directory
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(including a drive letter on non-Unix systems). */
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if (!(len == 1) /* "/" */
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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&& !(len == 3 && dir[1] == ':') /* "d:/" */
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#endif
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)
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len--;
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}
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dir_holder.reset (savestring (dir, len));
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if (IS_ABSOLUTE_PATH (dir_holder.get ()))
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{
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xfree (current_directory);
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current_directory = dir_holder.release ();
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}
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else
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{
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if (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]))
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current_directory = concat (current_directory, dir_holder.get (),
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(char *) NULL);
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else
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current_directory = concat (current_directory, SLASH_STRING,
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dir_holder.get (), (char *) NULL);
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}
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/* Now simplify any occurrences of `.' and `..' in the pathname. */
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found_real_path = 0;
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for (p = current_directory; *p;)
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{
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if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.'
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&& (p[2] == 0 || IS_DIR_SEPARATOR (p[2])))
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memmove (p, p + 2, strlen (p + 2) + 1);
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else if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' && p[2] == '.'
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&& (p[3] == 0 || IS_DIR_SEPARATOR (p[3])))
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{
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if (found_real_path)
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{
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/* Search backwards for the directory just before the "/.."
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and obliterate it and the "/..". */
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char *q = p;
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while (q != current_directory && !IS_DIR_SEPARATOR (q[-1]))
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--q;
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if (q == current_directory)
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/* current_directory is
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a relative pathname ("can't happen"--leave it alone). */
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++p;
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else
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{
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memmove (q - 1, p + 3, strlen (p + 3) + 1);
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p = q - 1;
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}
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}
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else
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/* We are dealing with leading repetitions of "/..", for
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example "/../..", which is the Mach super-root. */
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p += 3;
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}
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else
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{
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found_real_path = 1;
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++p;
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}
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}
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forget_cached_source_info ();
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if (from_tty)
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pwd_command ((char *) 0, 1);
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}
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/* Show the current value of the 'script-extension' option. */
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static void
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show_script_ext_mode (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file,
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_("Script filename extension recognition is \"%s\".\n"),
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value);
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}
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/* Try to open SCRIPT_FILE.
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If successful, the full path name is stored in *FULL_PATHP,
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and the stream is returned.
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If not successful, return NULL; errno is set for the last file
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we tried to open.
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If SEARCH_PATH is non-zero, and the file isn't found in cwd,
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search for it in the source search path. */
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gdb::optional<open_script>
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find_and_open_script (const char *script_file, int search_path)
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{
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int fd;
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openp_flags search_flags = OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH;
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gdb::optional<open_script> opened;
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gdb::unique_xmalloc_ptr<char> file (tilde_expand (script_file));
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if (search_path)
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search_flags |= OPF_SEARCH_IN_PATH;
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/* Search for and open 'file' on the search path used for source
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files. Put the full location in *FULL_PATHP. */
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gdb::unique_xmalloc_ptr<char> full_path;
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fd = openp (source_path, search_flags,
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file.get (), O_RDONLY, &full_path);
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if (fd == -1)
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return opened;
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FILE *result = fdopen (fd, FOPEN_RT);
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if (result == NULL)
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{
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int save_errno = errno;
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close (fd);
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errno = save_errno;
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}
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else
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opened.emplace (gdb_file_up (result), std::move (full_path));
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return opened;
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}
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/* Load script FILE, which has already been opened as STREAM.
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FILE_TO_OPEN is the form of FILE to use if one needs to open the file.
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This is provided as FILE may have been found via the source search path.
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An important thing to note here is that FILE may be a symlink to a file
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with a different or non-existing suffix, and thus one cannot infer the
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extension language from FILE_TO_OPEN. */
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static void
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source_script_from_stream (FILE *stream, const char *file,
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const char *file_to_open)
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{
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if (script_ext_mode != script_ext_off)
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{
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const struct extension_language_defn *extlang
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= get_ext_lang_of_file (file);
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if (extlang != NULL)
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{
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if (ext_lang_present_p (extlang))
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{
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script_sourcer_func *sourcer
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= ext_lang_script_sourcer (extlang);
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gdb_assert (sourcer != NULL);
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sourcer (extlang, stream, file_to_open);
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return;
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}
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else if (script_ext_mode == script_ext_soft)
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{
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/* Assume the file is a gdb script.
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This is handled below. */
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}
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else
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throw_ext_lang_unsupported (extlang);
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}
|
||
}
|
||
|
||
script_from_file (stream, file);
|
||
}
|
||
|
||
/* Worker to perform the "source" command.
|
||
Load script FILE.
|
||
If SEARCH_PATH is non-zero, and the file isn't found in cwd,
|
||
search for it in the source search path. */
|
||
|
||
static void
|
||
source_script_with_search (const char *file, int from_tty, int search_path)
|
||
{
|
||
|
||
if (file == NULL || *file == 0)
|
||
error (_("source command requires file name of file to source."));
|
||
|
||
gdb::optional<open_script> opened = find_and_open_script (file, search_path);
|
||
if (!opened)
|
||
{
|
||
/* The script wasn't found, or was otherwise inaccessible.
|
||
If the source command was invoked interactively, throw an
|
||
error. Otherwise (e.g. if it was invoked by a script),
|
||
just emit a warning, rather than cause an error. */
|
||
if (from_tty)
|
||
perror_with_name (file);
|
||
else
|
||
{
|
||
perror_warning_with_name (file);
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* The python support reopens the file, so we need to pass full_path here
|
||
in case the file was found on the search path. It's useful to do this
|
||
anyway so that error messages show the actual file used. But only do
|
||
this if we (may have) used search_path, as printing the full path in
|
||
errors for the non-search case can be more noise than signal. */
|
||
source_script_from_stream (opened->stream.get (), file,
|
||
search_path ? opened->full_path.get () : file);
|
||
}
|
||
|
||
/* Wrapper around source_script_with_search to export it to main.c
|
||
for use in loading .gdbinit scripts. */
|
||
|
||
void
|
||
source_script (const char *file, int from_tty)
|
||
{
|
||
source_script_with_search (file, from_tty, 0);
|
||
}
|
||
|
||
static void
|
||
source_command (const char *args, int from_tty)
|
||
{
|
||
const char *file = args;
|
||
int search_path = 0;
|
||
|
||
scoped_restore save_source_verbose = make_scoped_restore (&source_verbose);
|
||
|
||
/* -v causes the source command to run in verbose mode.
|
||
-s causes the file to be searched in the source search path,
|
||
even if the file name contains a '/'.
|
||
We still have to be able to handle filenames with spaces in a
|
||
backward compatible way, so buildargv is not appropriate. */
|
||
|
||
if (args)
|
||
{
|
||
while (args[0] != '\0')
|
||
{
|
||
/* Make sure leading white space does not break the
|
||
comparisons. */
|
||
args = skip_spaces (args);
|
||
|
||
if (args[0] != '-')
|
||
break;
|
||
|
||
if (args[1] == 'v' && isspace (args[2]))
|
||
{
|
||
source_verbose = 1;
|
||
|
||
/* Skip passed -v. */
|
||
args = &args[3];
|
||
}
|
||
else if (args[1] == 's' && isspace (args[2]))
|
||
{
|
||
search_path = 1;
|
||
|
||
/* Skip passed -s. */
|
||
args = &args[3];
|
||
}
|
||
else
|
||
break;
|
||
}
|
||
|
||
file = skip_spaces (args);
|
||
}
|
||
|
||
source_script_with_search (file, from_tty, search_path);
|
||
}
|
||
|
||
|
||
static void
|
||
echo_command (const char *text, int from_tty)
|
||
{
|
||
const char *p = text;
|
||
int c;
|
||
|
||
if (text)
|
||
while ((c = *p++) != '\0')
|
||
{
|
||
if (c == '\\')
|
||
{
|
||
/* \ at end of argument is used after spaces
|
||
so they won't be lost. */
|
||
if (*p == 0)
|
||
return;
|
||
|
||
c = parse_escape (get_current_arch (), &p);
|
||
if (c >= 0)
|
||
printf_filtered ("%c", c);
|
||
}
|
||
else
|
||
printf_filtered ("%c", c);
|
||
}
|
||
|
||
/* Force this output to appear now. */
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
static void
|
||
shell_escape (const char *arg, int from_tty)
|
||
{
|
||
#if defined(CANT_FORK) || \
|
||
(!defined(HAVE_WORKING_VFORK) && !defined(HAVE_WORKING_FORK))
|
||
/* If ARG is NULL, they want an inferior shell, but `system' just
|
||
reports if the shell is available when passed a NULL arg. */
|
||
int rc = system (arg ? arg : "");
|
||
|
||
if (!arg)
|
||
arg = "inferior shell";
|
||
|
||
if (rc == -1)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg,
|
||
safe_strerror (errno));
|
||
gdb_flush (gdb_stderr);
|
||
}
|
||
else if (rc)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc);
|
||
gdb_flush (gdb_stderr);
|
||
}
|
||
#ifdef GLOBAL_CURDIR
|
||
/* Make sure to return to the directory GDB thinks it is, in case
|
||
the shell command we just ran changed it. */
|
||
chdir (current_directory);
|
||
#endif
|
||
#else /* Can fork. */
|
||
int status, pid;
|
||
|
||
if ((pid = vfork ()) == 0)
|
||
{
|
||
const char *p, *user_shell;
|
||
|
||
close_most_fds ();
|
||
|
||
if ((user_shell = (char *) getenv ("SHELL")) == NULL)
|
||
user_shell = "/bin/sh";
|
||
|
||
/* Get the name of the shell for arg0. */
|
||
p = lbasename (user_shell);
|
||
|
||
if (!arg)
|
||
execl (user_shell, p, (char *) 0);
|
||
else
|
||
execl (user_shell, p, "-c", arg, (char *) 0);
|
||
|
||
fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell,
|
||
safe_strerror (errno));
|
||
gdb_flush (gdb_stderr);
|
||
_exit (0177);
|
||
}
|
||
|
||
if (pid != -1)
|
||
waitpid (pid, &status, 0);
|
||
else
|
||
error (_("Fork failed"));
|
||
#endif /* Can fork. */
|
||
}
|
||
|
||
/* Implementation of the "shell" command. */
|
||
|
||
static void
|
||
shell_command (const char *arg, int from_tty)
|
||
{
|
||
shell_escape (arg, from_tty);
|
||
}
|
||
|
||
static void
|
||
edit_command (const char *arg, int from_tty)
|
||
{
|
||
struct symtab_and_line sal;
|
||
struct symbol *sym;
|
||
const char *editor;
|
||
char *p;
|
||
const char *fn;
|
||
|
||
/* Pull in the current default source line if necessary. */
|
||
if (arg == 0)
|
||
{
|
||
set_default_source_symtab_and_line ();
|
||
sal = get_current_source_symtab_and_line ();
|
||
}
|
||
|
||
/* Bare "edit" edits file with present line. */
|
||
|
||
if (arg == 0)
|
||
{
|
||
if (sal.symtab == 0)
|
||
error (_("No default source file yet."));
|
||
sal.line += get_lines_to_list () / 2;
|
||
}
|
||
else
|
||
{
|
||
const char *arg1;
|
||
|
||
/* Now should only be one argument -- decode it in SAL. */
|
||
arg1 = arg;
|
||
event_location_up location = string_to_event_location (&arg1,
|
||
current_language);
|
||
std::vector<symtab_and_line> sals = decode_line_1 (location.get (),
|
||
DECODE_LINE_LIST_MODE,
|
||
NULL, NULL, 0);
|
||
|
||
filter_sals (sals);
|
||
if (sals.empty ())
|
||
{
|
||
/* C++ */
|
||
return;
|
||
}
|
||
if (sals.size () > 1)
|
||
{
|
||
ambiguous_line_spec (sals,
|
||
_("Specified line is ambiguous:\n"));
|
||
return;
|
||
}
|
||
|
||
sal = sals[0];
|
||
|
||
if (*arg1)
|
||
error (_("Junk at end of line specification."));
|
||
|
||
/* If line was specified by address, first print exactly which
|
||
line, and which file. In this case, sal.symtab == 0 means
|
||
address is outside of all known source files, not that user
|
||
failed to give a filename. */
|
||
if (*arg == '*')
|
||
{
|
||
struct gdbarch *gdbarch;
|
||
|
||
if (sal.symtab == 0)
|
||
error (_("No source file for address %s."),
|
||
paddress (get_current_arch (), sal.pc));
|
||
|
||
gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));
|
||
sym = find_pc_function (sal.pc);
|
||
if (sym)
|
||
printf_filtered ("%s is in %s (%s:%d).\n",
|
||
paddress (gdbarch, sal.pc),
|
||
SYMBOL_PRINT_NAME (sym),
|
||
symtab_to_filename_for_display (sal.symtab),
|
||
sal.line);
|
||
else
|
||
printf_filtered ("%s is at %s:%d.\n",
|
||
paddress (gdbarch, sal.pc),
|
||
symtab_to_filename_for_display (sal.symtab),
|
||
sal.line);
|
||
}
|
||
|
||
/* If what was given does not imply a symtab, it must be an
|
||
undebuggable symbol which means no source code. */
|
||
|
||
if (sal.symtab == 0)
|
||
error (_("No line number known for %s."), arg);
|
||
}
|
||
|
||
if ((editor = (char *) getenv ("EDITOR")) == NULL)
|
||
editor = "/bin/ex";
|
||
|
||
fn = symtab_to_fullname (sal.symtab);
|
||
|
||
/* Quote the file name, in case it has whitespace or other special
|
||
characters. */
|
||
p = xstrprintf ("%s +%d \"%s\"", editor, sal.line, fn);
|
||
shell_escape (p, from_tty);
|
||
xfree (p);
|
||
}
|
||
|
||
static void
|
||
list_command (const char *arg, int from_tty)
|
||
{
|
||
struct symbol *sym;
|
||
const char *arg1;
|
||
int no_end = 1;
|
||
int dummy_end = 0;
|
||
int dummy_beg = 0;
|
||
int linenum_beg = 0;
|
||
const char *p;
|
||
|
||
/* Pull in the current default source line if necessary. */
|
||
if (arg == NULL || ((arg[0] == '+' || arg[0] == '-') && arg[1] == '\0'))
|
||
{
|
||
set_default_source_symtab_and_line ();
|
||
symtab_and_line cursal = get_current_source_symtab_and_line ();
|
||
|
||
/* If this is the first "list" since we've set the current
|
||
source line, center the listing around that line. */
|
||
if (get_first_line_listed () == 0)
|
||
{
|
||
int first;
|
||
|
||
first = std::max (cursal.line - get_lines_to_list () / 2, 1);
|
||
|
||
/* A small special case --- if listing backwards, and we
|
||
should list only one line, list the preceding line,
|
||
instead of the exact line we've just shown after e.g.,
|
||
stopping for a breakpoint. */
|
||
if (arg != NULL && arg[0] == '-'
|
||
&& get_lines_to_list () == 1 && first > 1)
|
||
first -= 1;
|
||
|
||
print_source_lines (cursal.symtab, first,
|
||
first + get_lines_to_list (), 0);
|
||
}
|
||
|
||
/* "l" or "l +" lists next ten lines. */
|
||
else if (arg == NULL || arg[0] == '+')
|
||
print_source_lines (cursal.symtab, cursal.line,
|
||
cursal.line + get_lines_to_list (), 0);
|
||
|
||
/* "l -" lists previous ten lines, the ones before the ten just
|
||
listed. */
|
||
else if (arg[0] == '-')
|
||
{
|
||
if (get_first_line_listed () == 1)
|
||
error (_("Already at the start of %s."),
|
||
symtab_to_filename_for_display (cursal.symtab));
|
||
print_source_lines (cursal.symtab,
|
||
std::max (get_first_line_listed ()
|
||
- get_lines_to_list (), 1),
|
||
get_first_line_listed (), 0);
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
/* Now if there is only one argument, decode it in SAL
|
||
and set NO_END.
|
||
If there are two arguments, decode them in SAL and SAL_END
|
||
and clear NO_END; however, if one of the arguments is blank,
|
||
set DUMMY_BEG or DUMMY_END to record that fact. */
|
||
|
||
if (!have_full_symbols () && !have_partial_symbols ())
|
||
error (_("No symbol table is loaded. Use the \"file\" command."));
|
||
|
||
std::vector<symtab_and_line> sals;
|
||
symtab_and_line sal, sal_end;
|
||
|
||
arg1 = arg;
|
||
if (*arg1 == ',')
|
||
dummy_beg = 1;
|
||
else
|
||
{
|
||
event_location_up location = string_to_event_location (&arg1,
|
||
current_language);
|
||
sals = decode_line_1 (location.get (), DECODE_LINE_LIST_MODE,
|
||
NULL, NULL, 0);
|
||
filter_sals (sals);
|
||
if (sals.empty ())
|
||
{
|
||
/* C++ */
|
||
return;
|
||
}
|
||
|
||
sal = sals[0];
|
||
}
|
||
|
||
/* Record whether the BEG arg is all digits. */
|
||
|
||
for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
|
||
linenum_beg = (p == arg1);
|
||
|
||
/* Save the range of the first argument, in case we need to let the
|
||
user know it was ambiguous. */
|
||
const char *beg = arg;
|
||
size_t beg_len = arg1 - beg;
|
||
|
||
while (*arg1 == ' ' || *arg1 == '\t')
|
||
arg1++;
|
||
if (*arg1 == ',')
|
||
{
|
||
no_end = 0;
|
||
if (sals.size () > 1)
|
||
{
|
||
ambiguous_line_spec (sals,
|
||
_("Specified first line '%.*s' is ambiguous:\n"),
|
||
(int) beg_len, beg);
|
||
return;
|
||
}
|
||
arg1++;
|
||
while (*arg1 == ' ' || *arg1 == '\t')
|
||
arg1++;
|
||
if (*arg1 == 0)
|
||
dummy_end = 1;
|
||
else
|
||
{
|
||
/* Save the last argument, in case we need to let the user
|
||
know it was ambiguous. */
|
||
const char *end_arg = arg1;
|
||
|
||
event_location_up location
|
||
= string_to_event_location (&arg1, current_language);
|
||
|
||
std::vector<symtab_and_line> sals_end
|
||
= (dummy_beg
|
||
? decode_line_1 (location.get (), DECODE_LINE_LIST_MODE,
|
||
NULL, NULL, 0)
|
||
: decode_line_1 (location.get (), DECODE_LINE_LIST_MODE,
|
||
NULL, sal.symtab, sal.line));
|
||
|
||
filter_sals (sals_end);
|
||
if (sals_end.empty ())
|
||
return;
|
||
if (sals_end.size () > 1)
|
||
{
|
||
ambiguous_line_spec (sals_end,
|
||
_("Specified last line '%s' is ambiguous:\n"),
|
||
end_arg);
|
||
return;
|
||
}
|
||
sal_end = sals_end[0];
|
||
}
|
||
}
|
||
|
||
if (*arg1)
|
||
error (_("Junk at end of line specification."));
|
||
|
||
if (!no_end && !dummy_beg && !dummy_end
|
||
&& sal.symtab != sal_end.symtab)
|
||
error (_("Specified first and last lines are in different files."));
|
||
if (dummy_beg && dummy_end)
|
||
error (_("Two empty args do not say what lines to list."));
|
||
|
||
/* If line was specified by address,
|
||
first print exactly which line, and which file.
|
||
|
||
In this case, sal.symtab == 0 means address is outside of all
|
||
known source files, not that user failed to give a filename. */
|
||
if (*arg == '*')
|
||
{
|
||
struct gdbarch *gdbarch;
|
||
|
||
if (sal.symtab == 0)
|
||
error (_("No source file for address %s."),
|
||
paddress (get_current_arch (), sal.pc));
|
||
|
||
gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));
|
||
sym = find_pc_function (sal.pc);
|
||
if (sym)
|
||
printf_filtered ("%s is in %s (%s:%d).\n",
|
||
paddress (gdbarch, sal.pc),
|
||
SYMBOL_PRINT_NAME (sym),
|
||
symtab_to_filename_for_display (sal.symtab), sal.line);
|
||
else
|
||
printf_filtered ("%s is at %s:%d.\n",
|
||
paddress (gdbarch, sal.pc),
|
||
symtab_to_filename_for_display (sal.symtab), sal.line);
|
||
}
|
||
|
||
/* If line was not specified by just a line number, and it does not
|
||
imply a symtab, it must be an undebuggable symbol which means no
|
||
source code. */
|
||
|
||
if (!linenum_beg && sal.symtab == 0)
|
||
error (_("No line number known for %s."), arg);
|
||
|
||
/* If this command is repeated with RET,
|
||
turn it into the no-arg variant. */
|
||
|
||
if (from_tty)
|
||
set_repeat_arguments ("");
|
||
|
||
if (dummy_beg && sal_end.symtab == 0)
|
||
error (_("No default source file yet. Do \"help list\"."));
|
||
if (dummy_beg)
|
||
print_source_lines (sal_end.symtab,
|
||
std::max (sal_end.line - (get_lines_to_list () - 1), 1),
|
||
sal_end.line + 1, 0);
|
||
else if (sal.symtab == 0)
|
||
error (_("No default source file yet. Do \"help list\"."));
|
||
else if (no_end)
|
||
{
|
||
for (int i = 0; i < sals.size (); i++)
|
||
{
|
||
sal = sals[i];
|
||
int first_line = sal.line - get_lines_to_list () / 2;
|
||
if (first_line < 1)
|
||
first_line = 1;
|
||
if (sals.size () > 1)
|
||
print_sal_location (sal);
|
||
print_source_lines (sal.symtab,
|
||
first_line,
|
||
first_line + get_lines_to_list (),
|
||
0);
|
||
}
|
||
}
|
||
else
|
||
print_source_lines (sal.symtab, sal.line,
|
||
(dummy_end
|
||
? sal.line + get_lines_to_list ()
|
||
: sal_end.line + 1),
|
||
0);
|
||
}
|
||
|
||
/* Subroutine of disassemble_command to simplify it.
|
||
Perform the disassembly.
|
||
NAME is the name of the function if known, or NULL.
|
||
[LOW,HIGH) are the range of addresses to disassemble.
|
||
MIXED is non-zero to print source with the assembler. */
|
||
|
||
static void
|
||
print_disassembly (struct gdbarch *gdbarch, const char *name,
|
||
CORE_ADDR low, CORE_ADDR high,
|
||
gdb_disassembly_flags flags)
|
||
{
|
||
#if defined(TUI)
|
||
if (!tui_is_window_visible (DISASSEM_WIN))
|
||
#endif
|
||
{
|
||
printf_filtered ("Dump of assembler code ");
|
||
if (name != NULL)
|
||
printf_filtered ("for function %s:\n", name);
|
||
else
|
||
printf_filtered ("from %s to %s:\n",
|
||
paddress (gdbarch, low), paddress (gdbarch, high));
|
||
|
||
/* Dump the specified range. */
|
||
gdb_disassembly (gdbarch, current_uiout, flags, -1, low, high);
|
||
|
||
printf_filtered ("End of assembler dump.\n");
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
#if defined(TUI)
|
||
else
|
||
{
|
||
tui_show_assembly (gdbarch, low);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Subroutine of disassemble_command to simplify it.
|
||
Print a disassembly of the current function according to FLAGS. */
|
||
|
||
static void
|
||
disassemble_current_function (gdb_disassembly_flags flags)
|
||
{
|
||
struct frame_info *frame;
|
||
struct gdbarch *gdbarch;
|
||
CORE_ADDR low, high, pc;
|
||
const char *name;
|
||
|
||
frame = get_selected_frame (_("No frame selected."));
|
||
gdbarch = get_frame_arch (frame);
|
||
pc = get_frame_address_in_block (frame);
|
||
if (find_pc_partial_function (pc, &name, &low, &high) == 0)
|
||
error (_("No function contains program counter for selected frame."));
|
||
#if defined(TUI)
|
||
/* NOTE: cagney/2003-02-13 The `tui_active' was previously
|
||
`tui_version'. */
|
||
if (tui_active)
|
||
/* FIXME: cagney/2004-02-07: This should be an observer. */
|
||
low = tui_get_low_disassembly_address (gdbarch, low, pc);
|
||
#endif
|
||
low += gdbarch_deprecated_function_start_offset (gdbarch);
|
||
|
||
print_disassembly (gdbarch, name, low, high, flags);
|
||
}
|
||
|
||
/* Dump a specified section of assembly code.
|
||
|
||
Usage:
|
||
disassemble [/mrs]
|
||
- dump the assembly code for the function of the current pc
|
||
disassemble [/mrs] addr
|
||
- dump the assembly code for the function at ADDR
|
||
disassemble [/mrs] low,high
|
||
disassemble [/mrs] low,+length
|
||
- dump the assembly code in the range [LOW,HIGH), or [LOW,LOW+length)
|
||
|
||
A /m modifier will include source code with the assembly in a
|
||
"source centric" view. This view lists only the file of the first insn,
|
||
even if other source files are involved (e.g., inlined functions), and
|
||
the output is in source order, even with optimized code. This view is
|
||
considered deprecated as it hasn't been useful in practice.
|
||
|
||
A /r modifier will include raw instructions in hex with the assembly.
|
||
|
||
A /s modifier will include source code with the assembly, like /m, with
|
||
two important differences:
|
||
1) The output is still in pc address order.
|
||
2) File names and contents for all relevant source files are displayed. */
|
||
|
||
static void
|
||
disassemble_command (const char *arg, int from_tty)
|
||
{
|
||
struct gdbarch *gdbarch = get_current_arch ();
|
||
CORE_ADDR low, high;
|
||
const char *name;
|
||
CORE_ADDR pc;
|
||
gdb_disassembly_flags flags;
|
||
const char *p;
|
||
|
||
p = arg;
|
||
name = NULL;
|
||
flags = 0;
|
||
|
||
if (p && *p == '/')
|
||
{
|
||
++p;
|
||
|
||
if (*p == '\0')
|
||
error (_("Missing modifier."));
|
||
|
||
while (*p && ! isspace (*p))
|
||
{
|
||
switch (*p++)
|
||
{
|
||
case 'm':
|
||
flags |= DISASSEMBLY_SOURCE_DEPRECATED;
|
||
break;
|
||
case 'r':
|
||
flags |= DISASSEMBLY_RAW_INSN;
|
||
break;
|
||
case 's':
|
||
flags |= DISASSEMBLY_SOURCE;
|
||
break;
|
||
default:
|
||
error (_("Invalid disassembly modifier."));
|
||
}
|
||
}
|
||
|
||
p = skip_spaces (p);
|
||
}
|
||
|
||
if ((flags & (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE))
|
||
== (DISASSEMBLY_SOURCE_DEPRECATED | DISASSEMBLY_SOURCE))
|
||
error (_("Cannot specify both /m and /s."));
|
||
|
||
if (! p || ! *p)
|
||
{
|
||
flags |= DISASSEMBLY_OMIT_FNAME;
|
||
disassemble_current_function (flags);
|
||
return;
|
||
}
|
||
|
||
pc = value_as_address (parse_to_comma_and_eval (&p));
|
||
if (p[0] == ',')
|
||
++p;
|
||
if (p[0] == '\0')
|
||
{
|
||
/* One argument. */
|
||
if (find_pc_partial_function (pc, &name, &low, &high) == 0)
|
||
error (_("No function contains specified address."));
|
||
#if defined(TUI)
|
||
/* NOTE: cagney/2003-02-13 The `tui_active' was previously
|
||
`tui_version'. */
|
||
if (tui_active)
|
||
/* FIXME: cagney/2004-02-07: This should be an observer. */
|
||
low = tui_get_low_disassembly_address (gdbarch, low, pc);
|
||
#endif
|
||
low += gdbarch_deprecated_function_start_offset (gdbarch);
|
||
flags |= DISASSEMBLY_OMIT_FNAME;
|
||
}
|
||
else
|
||
{
|
||
/* Two arguments. */
|
||
int incl_flag = 0;
|
||
low = pc;
|
||
p = skip_spaces (p);
|
||
if (p[0] == '+')
|
||
{
|
||
++p;
|
||
incl_flag = 1;
|
||
}
|
||
high = parse_and_eval_address (p);
|
||
if (incl_flag)
|
||
high += low;
|
||
}
|
||
|
||
print_disassembly (gdbarch, name, low, high, flags);
|
||
}
|
||
|
||
static void
|
||
make_command (const char *arg, int from_tty)
|
||
{
|
||
if (arg == 0)
|
||
shell_escape ("make", from_tty);
|
||
else
|
||
{
|
||
std::string cmd = std::string ("make ") + arg;
|
||
|
||
shell_escape (cmd.c_str (), from_tty);
|
||
}
|
||
}
|
||
|
||
static void
|
||
show_user (const char *args, int from_tty)
|
||
{
|
||
struct cmd_list_element *c;
|
||
extern struct cmd_list_element *cmdlist;
|
||
|
||
if (args)
|
||
{
|
||
const char *comname = args;
|
||
|
||
c = lookup_cmd (&comname, cmdlist, "", 0, 1);
|
||
if (!cli_user_command_p (c))
|
||
error (_("Not a user command."));
|
||
show_user_1 (c, "", args, gdb_stdout);
|
||
}
|
||
else
|
||
{
|
||
for (c = cmdlist; c; c = c->next)
|
||
{
|
||
if (cli_user_command_p (c) || c->prefixlist != NULL)
|
||
show_user_1 (c, "", c->name, gdb_stdout);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Search through names of commands and documentations for a certain
|
||
regular expression. */
|
||
|
||
static void
|
||
apropos_command (const char *searchstr, int from_tty)
|
||
{
|
||
if (searchstr == NULL)
|
||
error (_("REGEXP string is empty"));
|
||
|
||
compiled_regex pattern (searchstr, REG_ICASE,
|
||
_("Error in regular expression"));
|
||
|
||
apropos_cmd (gdb_stdout, cmdlist, pattern, "");
|
||
}
|
||
|
||
/* Subroutine of alias_command to simplify it.
|
||
Return the first N elements of ARGV flattened back to a string
|
||
with a space separating each element.
|
||
ARGV may not be NULL.
|
||
This does not take care of quoting elements in case they contain spaces
|
||
on purpose. */
|
||
|
||
static std::string
|
||
argv_to_string (char **argv, int n)
|
||
{
|
||
int i;
|
||
std::string result;
|
||
|
||
gdb_assert (argv != NULL);
|
||
gdb_assert (n >= 0 && n <= countargv (argv));
|
||
|
||
for (i = 0; i < n; ++i)
|
||
{
|
||
if (i > 0)
|
||
result += " ";
|
||
result += argv[i];
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/* Subroutine of alias_command to simplify it.
|
||
Return TRUE if COMMAND exists, unambiguously. Otherwise FALSE. */
|
||
|
||
static int
|
||
valid_command_p (const char *command)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
c = lookup_cmd_1 (& command, cmdlist, NULL, 1);
|
||
|
||
if (c == NULL || c == (struct cmd_list_element *) -1)
|
||
return FALSE;
|
||
|
||
/* This is the slightly tricky part.
|
||
lookup_cmd_1 will return a pointer to the last part of COMMAND
|
||
to match, leaving COMMAND pointing at the remainder. */
|
||
while (*command == ' ' || *command == '\t')
|
||
++command;
|
||
return *command == '\0';
|
||
}
|
||
|
||
/* Called when "alias" was incorrectly used. */
|
||
|
||
static void
|
||
alias_usage_error (void)
|
||
{
|
||
error (_("Usage: alias [-a] [--] ALIAS = COMMAND"));
|
||
}
|
||
|
||
/* Make an alias of an existing command. */
|
||
|
||
static void
|
||
alias_command (const char *args, int from_tty)
|
||
{
|
||
int i, alias_argc, command_argc;
|
||
int abbrev_flag = 0;
|
||
const char *equals;
|
||
const char *alias, *command;
|
||
|
||
if (args == NULL || strchr (args, '=') == NULL)
|
||
alias_usage_error ();
|
||
|
||
equals = strchr (args, '=');
|
||
std::string args2 (args, equals - args);
|
||
|
||
gdb_argv built_alias_argv (args2.c_str ());
|
||
gdb_argv command_argv (equals + 1);
|
||
|
||
char **alias_argv = built_alias_argv.get ();
|
||
while (alias_argv[0] != NULL)
|
||
{
|
||
if (strcmp (alias_argv[0], "-a") == 0)
|
||
{
|
||
++alias_argv;
|
||
abbrev_flag = 1;
|
||
}
|
||
else if (strcmp (alias_argv[0], "--") == 0)
|
||
{
|
||
++alias_argv;
|
||
break;
|
||
}
|
||
else
|
||
break;
|
||
}
|
||
|
||
if (alias_argv[0] == NULL || command_argv[0] == NULL
|
||
|| *alias_argv[0] == '\0' || *command_argv[0] == '\0')
|
||
alias_usage_error ();
|
||
|
||
for (i = 0; alias_argv[i] != NULL; ++i)
|
||
{
|
||
if (! valid_user_defined_cmd_name_p (alias_argv[i]))
|
||
{
|
||
if (i == 0)
|
||
error (_("Invalid command name: %s"), alias_argv[i]);
|
||
else
|
||
error (_("Invalid command element name: %s"), alias_argv[i]);
|
||
}
|
||
}
|
||
|
||
alias_argc = countargv (alias_argv);
|
||
command_argc = command_argv.count ();
|
||
|
||
/* COMMAND must exist.
|
||
Reconstruct the command to remove any extraneous spaces,
|
||
for better error messages. */
|
||
std::string command_string (argv_to_string (command_argv.get (),
|
||
command_argc));
|
||
command = command_string.c_str ();
|
||
if (! valid_command_p (command))
|
||
error (_("Invalid command to alias to: %s"), command);
|
||
|
||
/* ALIAS must not exist. */
|
||
std::string alias_string (argv_to_string (alias_argv, alias_argc));
|
||
alias = alias_string.c_str ();
|
||
if (valid_command_p (alias))
|
||
error (_("Alias already exists: %s"), alias);
|
||
|
||
/* If ALIAS is one word, it is an alias for the entire COMMAND.
|
||
Example: alias spe = set print elements
|
||
|
||
Otherwise ALIAS and COMMAND must have the same number of words,
|
||
and every word except the last must match; and the last word of
|
||
ALIAS is made an alias of the last word of COMMAND.
|
||
Example: alias set print elms = set pr elem
|
||
Note that unambiguous abbreviations are allowed. */
|
||
|
||
if (alias_argc == 1)
|
||
{
|
||
/* add_cmd requires *we* allocate space for name, hence the xstrdup. */
|
||
add_com_alias (xstrdup (alias_argv[0]), command, class_alias,
|
||
abbrev_flag);
|
||
}
|
||
else
|
||
{
|
||
const char *alias_prefix, *command_prefix;
|
||
struct cmd_list_element *c_alias, *c_command;
|
||
|
||
if (alias_argc != command_argc)
|
||
error (_("Mismatched command length between ALIAS and COMMAND."));
|
||
|
||
/* Create copies of ALIAS and COMMAND without the last word,
|
||
and use that to verify the leading elements match. */
|
||
std::string alias_prefix_string (argv_to_string (alias_argv,
|
||
alias_argc - 1));
|
||
std::string command_prefix_string (argv_to_string (alias_argv,
|
||
command_argc - 1));
|
||
alias_prefix = alias_prefix_string.c_str ();
|
||
command_prefix = command_prefix_string.c_str ();
|
||
|
||
c_command = lookup_cmd_1 (& command_prefix, cmdlist, NULL, 1);
|
||
/* We've already tried to look up COMMAND. */
|
||
gdb_assert (c_command != NULL
|
||
&& c_command != (struct cmd_list_element *) -1);
|
||
gdb_assert (c_command->prefixlist != NULL);
|
||
c_alias = lookup_cmd_1 (& alias_prefix, cmdlist, NULL, 1);
|
||
if (c_alias != c_command)
|
||
error (_("ALIAS and COMMAND prefixes do not match."));
|
||
|
||
/* add_cmd requires *we* allocate space for name, hence the xstrdup. */
|
||
add_alias_cmd (xstrdup (alias_argv[alias_argc - 1]),
|
||
command_argv[command_argc - 1],
|
||
class_alias, abbrev_flag, c_command->prefixlist);
|
||
}
|
||
}
|
||
|
||
/* Print the file / line number / symbol name of the location
|
||
specified by SAL. */
|
||
|
||
static void
|
||
print_sal_location (const symtab_and_line &sal)
|
||
{
|
||
scoped_restore_current_program_space restore_pspace;
|
||
set_current_program_space (sal.pspace);
|
||
|
||
const char *sym_name = NULL;
|
||
if (sal.symbol != NULL)
|
||
sym_name = SYMBOL_PRINT_NAME (sal.symbol);
|
||
printf_filtered (_("file: \"%s\", line number: %d, symbol: \"%s\"\n"),
|
||
symtab_to_filename_for_display (sal.symtab),
|
||
sal.line, sym_name != NULL ? sym_name : "???");
|
||
}
|
||
|
||
/* Print a list of files and line numbers which a user may choose from
|
||
in order to list a function which was specified ambiguously (as
|
||
with `list classname::overloadedfuncname', for example). The SALS
|
||
array provides the filenames and line numbers. FORMAT is a
|
||
printf-style format string used to tell the user what was
|
||
ambiguous. */
|
||
|
||
static void
|
||
ambiguous_line_spec (gdb::array_view<const symtab_and_line> sals,
|
||
const char *format, ...)
|
||
{
|
||
va_list ap;
|
||
va_start (ap, format);
|
||
vprintf_filtered (format, ap);
|
||
va_end (ap);
|
||
|
||
for (const auto &sal : sals)
|
||
print_sal_location (sal);
|
||
}
|
||
|
||
/* Comparison function for filter_sals. Returns a qsort-style
|
||
result. */
|
||
|
||
static int
|
||
cmp_symtabs (const symtab_and_line &sala, const symtab_and_line &salb)
|
||
{
|
||
const char *dira = SYMTAB_DIRNAME (sala.symtab);
|
||
const char *dirb = SYMTAB_DIRNAME (salb.symtab);
|
||
int r;
|
||
|
||
if (dira == NULL)
|
||
{
|
||
if (dirb != NULL)
|
||
return -1;
|
||
}
|
||
else if (dirb == NULL)
|
||
{
|
||
if (dira != NULL)
|
||
return 1;
|
||
}
|
||
else
|
||
{
|
||
r = filename_cmp (dira, dirb);
|
||
if (r)
|
||
return r;
|
||
}
|
||
|
||
r = filename_cmp (sala.symtab->filename, salb.symtab->filename);
|
||
if (r)
|
||
return r;
|
||
|
||
if (sala.line < salb.line)
|
||
return -1;
|
||
return sala.line == salb.line ? 0 : 1;
|
||
}
|
||
|
||
/* Remove any SALs that do not match the current program space, or
|
||
which appear to be "file:line" duplicates. */
|
||
|
||
static void
|
||
filter_sals (std::vector<symtab_and_line> &sals)
|
||
{
|
||
/* Remove SALs that do not match. */
|
||
auto from = std::remove_if (sals.begin (), sals.end (),
|
||
[&] (const symtab_and_line &sal)
|
||
{ return (sal.pspace != current_program_space || sal.symtab == NULL); });
|
||
|
||
/* Remove dups. */
|
||
std::sort (sals.begin (), from,
|
||
[] (const symtab_and_line &sala, const symtab_and_line &salb)
|
||
{ return cmp_symtabs (sala, salb) < 0; });
|
||
|
||
from = std::unique (sals.begin (), from,
|
||
[&] (const symtab_and_line &sala,
|
||
const symtab_and_line &salb)
|
||
{ return cmp_symtabs (sala, salb) == 0; });
|
||
|
||
sals.erase (from, sals.end ());
|
||
}
|
||
|
||
static void
|
||
set_debug (const char *arg, int from_tty)
|
||
{
|
||
printf_unfiltered (_("\"set debug\" must be followed by "
|
||
"the name of a debug subcommand.\n"));
|
||
help_list (setdebuglist, "set debug ", all_commands, gdb_stdout);
|
||
}
|
||
|
||
static void
|
||
show_debug (const char *args, int from_tty)
|
||
{
|
||
cmd_show_list (showdebuglist, from_tty, "");
|
||
}
|
||
|
||
void
|
||
init_cmd_lists (void)
|
||
{
|
||
max_user_call_depth = 1024;
|
||
}
|
||
|
||
static void
|
||
show_info_verbose (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
if (info_verbose)
|
||
fprintf_filtered (file,
|
||
_("Verbose printing of informational messages is %s.\n"),
|
||
value);
|
||
else
|
||
fprintf_filtered (file, _("Verbosity is %s.\n"), value);
|
||
}
|
||
|
||
static void
|
||
show_history_expansion_p (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("History expansion on command input is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
static void
|
||
show_remote_debug (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
static void
|
||
show_remote_timeout (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("Timeout limit to wait for target to respond is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
static void
|
||
show_max_user_call_depth (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("The max call depth for user-defined commands is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
void
|
||
_initialize_cli_cmds (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
/* Define the classes of commands.
|
||
They will appear in the help list in alphabetical order. */
|
||
|
||
add_cmd ("internals", class_maintenance, _("\
|
||
Maintenance commands.\n\
|
||
Some gdb commands are provided just for use by gdb maintainers.\n\
|
||
These commands are subject to frequent change, and may not be as\n\
|
||
well documented as user commands."),
|
||
&cmdlist);
|
||
add_cmd ("obscure", class_obscure, _("Obscure features."), &cmdlist);
|
||
add_cmd ("aliases", class_alias,
|
||
_("Aliases of other commands."), &cmdlist);
|
||
add_cmd ("user-defined", class_user, _("\
|
||
User-defined commands.\n\
|
||
The commands in this class are those defined by the user.\n\
|
||
Use the \"define\" command to define a command."), &cmdlist);
|
||
add_cmd ("support", class_support, _("Support facilities."), &cmdlist);
|
||
if (!dbx_commands)
|
||
add_cmd ("status", class_info, _("Status inquiries."), &cmdlist);
|
||
add_cmd ("files", class_files, _("Specifying and examining files."),
|
||
&cmdlist);
|
||
add_cmd ("breakpoints", class_breakpoint,
|
||
_("Making program stop at certain points."), &cmdlist);
|
||
add_cmd ("data", class_vars, _("Examining data."), &cmdlist);
|
||
add_cmd ("stack", class_stack, _("\
|
||
Examining the stack.\n\
|
||
The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
|
||
counting from zero for the innermost (currently executing) frame.\n\n\
|
||
At any time gdb identifies one frame as the \"selected\" frame.\n\
|
||
Variable lookups are done with respect to the selected frame.\n\
|
||
When the program being debugged stops, gdb selects the innermost frame.\n\
|
||
The commands below can be used to select other frames by number or address."),
|
||
&cmdlist);
|
||
add_cmd ("running", class_run, _("Running the program."), &cmdlist);
|
||
|
||
/* Define general commands. */
|
||
|
||
add_com ("pwd", class_files, pwd_command, _("\
|
||
Print working directory. This is used for your program as well."));
|
||
|
||
c = add_cmd ("cd", class_files, cd_command, _("\
|
||
Set working directory to DIR for debugger.\n\
|
||
The debugger's current working directory specifies where scripts and other\n\
|
||
files that can be loaded by GDB are located.\n\
|
||
In order to change the inferior's current working directory, the recommended\n\
|
||
way is to use the \"set cwd\" command."), &cmdlist);
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
add_com ("echo", class_support, echo_command, _("\
|
||
Print a constant string. Give string as argument.\n\
|
||
C escape sequences may be used in the argument.\n\
|
||
No newline is added at the end of the argument;\n\
|
||
use \"\\n\" if you want a newline to be printed.\n\
|
||
Since leading and trailing whitespace are ignored in command arguments,\n\
|
||
if you want to print some you must use \"\\\" before leading whitespace\n\
|
||
to be printed or after trailing whitespace."));
|
||
|
||
add_setshow_enum_cmd ("script-extension", class_support,
|
||
script_ext_enums, &script_ext_mode, _("\
|
||
Set mode for script filename extension recognition."), _("\
|
||
Show mode for script filename extension recognition."), _("\
|
||
off == no filename extension recognition (all sourced files are GDB scripts)\n\
|
||
soft == evaluate script according to filename extension, fallback to GDB script"
|
||
"\n\
|
||
strict == evaluate script according to filename extension, error if not supported"
|
||
),
|
||
NULL,
|
||
show_script_ext_mode,
|
||
&setlist, &showlist);
|
||
|
||
add_com ("quit", class_support, quit_command, _("\
|
||
Exit gdb.\n\
|
||
Usage: quit [EXPR]\n\
|
||
The optional expression EXPR, if present, is evaluated and the result\n\
|
||
used as GDB's exit code. The default is zero."));
|
||
c = add_com ("help", class_support, help_command,
|
||
_("Print list of commands."));
|
||
set_cmd_completer (c, command_completer);
|
||
add_com_alias ("q", "quit", class_support, 1);
|
||
add_com_alias ("h", "help", class_support, 1);
|
||
|
||
add_setshow_boolean_cmd ("verbose", class_support, &info_verbose, _("\
|
||
Set verbosity."), _("\
|
||
Show verbosity."), NULL,
|
||
set_verbose,
|
||
show_info_verbose,
|
||
&setlist, &showlist);
|
||
|
||
add_prefix_cmd ("history", class_support, set_history,
|
||
_("Generic command for setting command history parameters."),
|
||
&sethistlist, "set history ", 0, &setlist);
|
||
add_prefix_cmd ("history", class_support, show_history,
|
||
_("Generic command for showing command history parameters."),
|
||
&showhistlist, "show history ", 0, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("expansion", no_class, &history_expansion_p, _("\
|
||
Set history expansion on command input."), _("\
|
||
Show history expansion on command input."), _("\
|
||
Without an argument, history expansion is enabled."),
|
||
NULL,
|
||
show_history_expansion_p,
|
||
&sethistlist, &showhistlist);
|
||
|
||
add_prefix_cmd ("info", class_info, info_command, _("\
|
||
Generic command for showing things about the program being debugged."),
|
||
&infolist, "info ", 0, &cmdlist);
|
||
add_com_alias ("i", "info", class_info, 1);
|
||
add_com_alias ("inf", "info", class_info, 1);
|
||
|
||
add_com ("complete", class_obscure, complete_command,
|
||
_("List the completions for the rest of the line as a command."));
|
||
|
||
add_prefix_cmd ("show", class_info, show_command, _("\
|
||
Generic command for showing things about the debugger."),
|
||
&showlist, "show ", 0, &cmdlist);
|
||
/* Another way to get at the same thing. */
|
||
add_info ("set", show_command, _("Show all GDB settings."));
|
||
|
||
add_cmd ("commands", no_set_class, show_commands, _("\
|
||
Show the history of commands you typed.\n\
|
||
You can supply a command number to start with, or a `+' to start after\n\
|
||
the previous command number shown."),
|
||
&showlist);
|
||
|
||
add_cmd ("version", no_set_class, show_version,
|
||
_("Show what version of GDB this is."), &showlist);
|
||
|
||
add_cmd ("configuration", no_set_class, show_configuration,
|
||
_("Show how GDB was configured at build time."), &showlist);
|
||
|
||
add_setshow_zinteger_cmd ("remote", no_class, &remote_debug, _("\
|
||
Set debugging of remote protocol."), _("\
|
||
Show debugging of remote protocol."), _("\
|
||
When enabled, each packet sent or received with the remote target\n\
|
||
is displayed."),
|
||
NULL,
|
||
show_remote_debug,
|
||
&setdebuglist, &showdebuglist);
|
||
|
||
add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class,
|
||
&remote_timeout, _("\
|
||
Set timeout limit to wait for target to respond."), _("\
|
||
Show timeout limit to wait for target to respond."), _("\
|
||
This value is used to set the time limit for gdb to wait for a response\n\
|
||
from the target."),
|
||
NULL,
|
||
show_remote_timeout,
|
||
&setlist, &showlist);
|
||
|
||
add_prefix_cmd ("debug", no_class, set_debug,
|
||
_("Generic command for setting gdb debugging flags"),
|
||
&setdebuglist, "set debug ", 0, &setlist);
|
||
|
||
add_prefix_cmd ("debug", no_class, show_debug,
|
||
_("Generic command for showing gdb debugging flags"),
|
||
&showdebuglist, "show debug ", 0, &showlist);
|
||
|
||
c = add_com ("shell", class_support, shell_command, _("\
|
||
Execute the rest of the line as a shell command.\n\
|
||
With no arguments, run an inferior shell."));
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
c = add_com ("edit", class_files, edit_command, _("\
|
||
Edit specified file or function.\n\
|
||
With no argument, edits file containing most recent line listed.\n\
|
||
Editing targets can be specified in these ways:\n\
|
||
FILE:LINENUM, to edit at that line in that file,\n\
|
||
FUNCTION, to edit at the beginning of that function,\n\
|
||
FILE:FUNCTION, to distinguish among like-named static functions.\n\
|
||
*ADDRESS, to edit at the line containing that address.\n\
|
||
Uses EDITOR environment variable contents as editor (or ex as default)."));
|
||
|
||
c->completer = location_completer;
|
||
|
||
add_com ("list", class_files, list_command, _("\
|
||
List specified function or line.\n\
|
||
With no argument, lists ten more lines after or around previous listing.\n\
|
||
\"list -\" lists the ten lines before a previous ten-line listing.\n\
|
||
One argument specifies a line, and ten lines are listed around that line.\n\
|
||
Two arguments with comma between specify starting and ending lines to list.\n\
|
||
Lines can be specified in these ways:\n\
|
||
LINENUM, to list around that line in current file,\n\
|
||
FILE:LINENUM, to list around that line in that file,\n\
|
||
FUNCTION, to list around beginning of that function,\n\
|
||
FILE:FUNCTION, to distinguish among like-named static functions.\n\
|
||
*ADDRESS, to list around the line containing that address.\n\
|
||
With two args, if one is empty, it stands for ten lines away from\n\
|
||
the other arg.\n\
|
||
\n\
|
||
By default, when a single location is given, display ten lines.\n\
|
||
This can be changed using \"set listsize\", and the current value\n\
|
||
can be shown using \"show listsize\"."));
|
||
|
||
add_com_alias ("l", "list", class_files, 1);
|
||
|
||
if (dbx_commands)
|
||
add_com_alias ("file", "list", class_files, 1);
|
||
|
||
c = add_com ("disassemble", class_vars, disassemble_command, _("\
|
||
Disassemble a specified section of memory.\n\
|
||
Default is the function surrounding the pc of the selected frame.\n\
|
||
\n\
|
||
With a /m modifier, source lines are included (if available).\n\
|
||
This view is \"source centric\": the output is in source line order,\n\
|
||
regardless of any optimization that is present. Only the main source file\n\
|
||
is displayed, not those of, e.g., any inlined functions.\n\
|
||
This modifier hasn't proved useful in practice and is deprecated\n\
|
||
in favor of /s.\n\
|
||
\n\
|
||
With a /s modifier, source lines are included (if available).\n\
|
||
This differs from /m in two important respects:\n\
|
||
- the output is still in pc address order, and\n\
|
||
- file names and contents for all relevant source files are displayed.\n\
|
||
\n\
|
||
With a /r modifier, raw instructions in hex are included.\n\
|
||
\n\
|
||
With a single argument, the function surrounding that address is dumped.\n\
|
||
Two arguments (separated by a comma) are taken as a range of memory to dump,\n\
|
||
in the form of \"start,end\", or \"start,+length\".\n\
|
||
\n\
|
||
Note that the address is interpreted as an expression, not as a location\n\
|
||
like in the \"break\" command.\n\
|
||
So, for example, if you want to disassemble function bar in file foo.c\n\
|
||
you must type \"disassemble 'foo.c'::bar\" and not \"disassemble foo.c:bar\"."));
|
||
set_cmd_completer (c, location_completer);
|
||
|
||
add_com_alias ("!", "shell", class_support, 0);
|
||
|
||
c = add_com ("make", class_support, make_command, _("\
|
||
Run the ``make'' program using the rest of the line as arguments."));
|
||
set_cmd_completer (c, filename_completer);
|
||
add_cmd ("user", no_class, show_user, _("\
|
||
Show definitions of non-python/scheme user defined commands.\n\
|
||
Argument is the name of the user defined command.\n\
|
||
With no argument, show definitions of all user defined commands."), &showlist);
|
||
add_com ("apropos", class_support, apropos_command,
|
||
_("Search for commands matching a REGEXP"));
|
||
|
||
add_setshow_uinteger_cmd ("max-user-call-depth", no_class,
|
||
&max_user_call_depth, _("\
|
||
Set the max call depth for non-python/scheme user-defined commands."), _("\
|
||
Show the max call depth for non-python/scheme user-defined commands."), NULL,
|
||
NULL,
|
||
show_max_user_call_depth,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("trace-commands", no_class, &trace_commands, _("\
|
||
Set tracing of GDB CLI commands."), _("\
|
||
Show state of GDB CLI command tracing."), _("\
|
||
When 'on', each command is displayed as it is executed."),
|
||
NULL,
|
||
NULL,
|
||
&setlist, &showlist);
|
||
|
||
c = add_com ("alias", class_support, alias_command, _("\
|
||
Define a new command that is an alias of an existing command.\n\
|
||
Usage: alias [-a] [--] ALIAS = COMMAND\n\
|
||
ALIAS is the name of the alias command to create.\n\
|
||
COMMAND is the command being aliased to.\n\
|
||
If \"-a\" is specified, the command is an abbreviation,\n\
|
||
and will not appear in help command list output.\n\
|
||
\n\
|
||
Examples:\n\
|
||
Make \"spe\" an alias of \"set print elements\":\n\
|
||
alias spe = set print elements\n\
|
||
Make \"elms\" an alias of \"elements\" in the \"set print\" command:\n\
|
||
alias -a set print elms = set print elements"));
|
||
}
|
||
|
||
void
|
||
init_cli_cmds (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
char *source_help_text;
|
||
|
||
source_help_text = xstrprintf (_("\
|
||
Read commands from a file named FILE.\n\
|
||
\n\
|
||
Usage: source [-s] [-v] FILE\n\
|
||
-s: search for the script in the source search path,\n\
|
||
even if FILE contains directories.\n\
|
||
-v: each command in FILE is echoed as it is executed.\n\
|
||
\n\
|
||
Note that the file \"%s\" is read automatically in this way\n\
|
||
when GDB is started."), gdbinit);
|
||
c = add_cmd ("source", class_support, source_command,
|
||
source_help_text, &cmdlist);
|
||
set_cmd_completer (c, filename_completer);
|
||
}
|