| /* GDB CLI commands. |
| |
| Copyright (C) 2000-2019 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "defs.h" |
| #include "arch-utils.h" |
| #include "readline/readline.h" |
| #include "readline/tilde.h" |
| #include "completer.h" |
| #include "target.h" /* For baud_rate, remote_debug and remote_timeout. */ |
| #include "gdb_wait.h" /* For shell escape implementation. */ |
| #include "gdb_regex.h" /* Used by apropos_command. */ |
| #include "gdb_vfork.h" |
| #include "linespec.h" |
| #include "expression.h" |
| #include "frame.h" |
| #include "value.h" |
| #include "language.h" |
| #include "filenames.h" /* For DOSish file names. */ |
| #include "objfiles.h" |
| #include "source.h" |
| #include "disasm.h" |
| #include "tracepoint.h" |
| #include "filestuff.h" |
| #include "location.h" |
| #include "block.h" |
| |
| #include "ui-out.h" |
| |
| #include "top.h" |
| #include "cli/cli-decode.h" |
| #include "cli/cli-script.h" |
| #include "cli/cli-setshow.h" |
| #include "cli/cli-cmds.h" |
| #include "cli/cli-utils.h" |
| |
| #include "extension.h" |
| #include "common/pathstuff.h" |
| |
| #ifdef TUI |
| #include "tui/tui.h" /* For tui_active et.al. */ |
| #endif |
| |
| #include <fcntl.h> |
| #include <algorithm> |
| #include <string> |
| |
| /* Prototypes for local utility functions */ |
| |
| static void print_sal_location (const symtab_and_line &sal); |
| |
| static void ambiguous_line_spec (gdb::array_view<const symtab_and_line> sals, |
| const char *format, ...) |
| ATTRIBUTE_PRINTF (2, 3); |
| |
| static void filter_sals (std::vector<symtab_and_line> &); |
| |
| |
| /* Limit the call depth of user-defined commands */ |
| unsigned int max_user_call_depth; |
| |
| /* Define all cmd_list_elements. */ |
| |
| /* Chain containing all defined commands. */ |
| |
| struct cmd_list_element *cmdlist; |
| |
| /* Chain containing all defined info subcommands. */ |
| |
| struct cmd_list_element *infolist; |
| |
| /* Chain containing all defined enable subcommands. */ |
| |
| struct cmd_list_element *enablelist; |
| |
| /* Chain containing all defined disable subcommands. */ |
| |
| struct cmd_list_element *disablelist; |
| |
| /* Chain containing all defined stop subcommands. */ |
| |
| struct cmd_list_element *stoplist; |
| |
| /* Chain containing all defined delete subcommands. */ |
| |
| struct cmd_list_element *deletelist; |
| |
| /* Chain containing all defined detach subcommands. */ |
| |
| struct cmd_list_element *detachlist; |
| |
| /* Chain containing all defined kill subcommands. */ |
| |
| struct cmd_list_element *killlist; |
| |
| /* Chain containing all defined set subcommands */ |
| |
| struct cmd_list_element *setlist; |
| |
| /* Chain containing all defined unset subcommands */ |
| |
| struct cmd_list_element *unsetlist; |
| |
| /* Chain containing all defined show subcommands. */ |
| |
| struct cmd_list_element *showlist; |
| |
| /* Chain containing all defined \"set history\". */ |
| |
| struct cmd_list_element *sethistlist; |
| |
| /* Chain containing all defined \"show history\". */ |
| |
| struct cmd_list_element *showhistlist; |
| |
| /* Chain containing all defined \"unset history\". */ |
| |
| struct cmd_list_element *unsethistlist; |
| |
| /* Chain containing all defined maintenance subcommands. */ |
| |
| struct cmd_list_element *maintenancelist; |
| |
| /* Chain containing all defined "maintenance info" subcommands. */ |
| |
| struct cmd_list_element *maintenanceinfolist; |
| |
| /* Chain containing all defined "maintenance print" subcommands. */ |
| |
| struct cmd_list_element *maintenanceprintlist; |
| |
| /* Chain containing all defined "maintenance check" subcommands. */ |
| |
| struct cmd_list_element *maintenancechecklist; |
| |
| struct cmd_list_element *setprintlist; |
| |
| struct cmd_list_element *showprintlist; |
| |
| struct cmd_list_element *setdebuglist; |
| |
| struct cmd_list_element *showdebuglist; |
| |
| struct cmd_list_element *setchecklist; |
| |
| struct cmd_list_element *showchecklist; |
| |
| /* Command tracing state. */ |
| |
| int source_verbose = 0; |
| int trace_commands = 0; |
| |
| /* 'script-extension' option support. */ |
| |
| static const char script_ext_off[] = "off"; |
| static const char script_ext_soft[] = "soft"; |
| static const char script_ext_strict[] = "strict"; |
| |
| static const char *const script_ext_enums[] = { |
| script_ext_off, |
| script_ext_soft, |
| script_ext_strict, |
| NULL |
| }; |
| |
| static const char *script_ext_mode = script_ext_soft; |
| |
| /* Utility used everywhere when at least one argument is needed and |
| none is supplied. */ |
| |
| void |
| error_no_arg (const char *why) |
| { |
| error (_("Argument required (%s)."), why); |
| } |
| |
| /* The "info" command is defined as a prefix, with allow_unknown = 0. |
| Therefore, its own definition is called only for "info" with no |
| args. */ |
| |
| static void |
| info_command (const char *arg, int from_tty) |
| { |
| printf_unfiltered (_("\"info\" must be followed by " |
| "the name of an info command.\n")); |
| help_list (infolist, "info ", all_commands, gdb_stdout); |
| } |
| |
| /* The "show" command with no arguments shows all the settings. */ |
| |
| static void |
| show_command (const char *arg, int from_tty) |
| { |
| cmd_show_list (showlist, from_tty, ""); |
| } |
| |
| |
| /* Provide documentation on command or list given by COMMAND. FROM_TTY |
| is ignored. */ |
| |
| static void |
| help_command (const char *command, int from_tty) |
| { |
| help_cmd (command, gdb_stdout); |
| } |
| |
| |
| /* Note: The "complete" command is used by Emacs to implement completion. |
| [Is that why this function writes output with *_unfiltered?] */ |
| |
| static void |
| complete_command (const char *arg, int from_tty) |
| { |
| dont_repeat (); |
| |
| if (max_completions == 0) |
| { |
| /* Only print this for non-mi frontends. An MI frontend may not |
| be able to handle this. */ |
| if (!current_uiout->is_mi_like_p ()) |
| { |
| printf_unfiltered (_("max-completions is zero," |
| " completion is disabled.\n")); |
| } |
| return; |
| } |
| |
| if (arg == NULL) |
| arg = ""; |
| |
| completion_tracker tracker_handle_brkchars; |
| completion_tracker tracker_handle_completions; |
| completion_tracker *tracker; |
| |
| int quote_char = '\0'; |
| const char *word; |
| |
| TRY |
| { |
| word = completion_find_completion_word (tracker_handle_brkchars, |
| arg, "e_char); |
| |
| /* Completers that provide a custom word point in the |
| handle_brkchars phase also compute their completions then. |
| Completers that leave the completion word handling to readline |
| must be called twice. */ |
| if (tracker_handle_brkchars.use_custom_word_point ()) |
| tracker = &tracker_handle_brkchars; |
| else |
| { |
| complete_line (tracker_handle_completions, word, arg, strlen (arg)); |
| tracker = &tracker_handle_completions; |
| } |
| } |
| CATCH (ex, RETURN_MASK_ALL) |
| { |
| return; |
| } |
| END_CATCH |
| |
| std::string arg_prefix (arg, word - arg); |
| |
| completion_result result |
| = tracker->build_completion_result (word, word - arg, strlen (arg)); |
| |
| if (result.number_matches != 0) |
| { |
| if (result.number_matches == 1) |
| printf_unfiltered ("%s%s\n", arg_prefix.c_str (), result.match_list[0]); |
| else |
| { |
| result.sort_match_list (); |
| |
| for (size_t i = 0; i < result.number_matches; i++) |
| { |
| printf_unfiltered ("%s%s", |
| arg_prefix.c_str (), |
| result.match_list[i + 1]); |
| if (quote_char) |
| printf_unfiltered ("%c", quote_char); |
| printf_unfiltered ("\n"); |
| } |
| } |
| |
| if (result.number_matches == max_completions) |
| { |
| /* ARG_PREFIX and WORD are included in the output so that emacs |
| will include the message in the output. */ |
| printf_unfiltered (_("%s%s %s\n"), |
| arg_prefix.c_str (), word, |
| get_max_completions_reached_message ()); |
| } |
| } |
| } |
| |
| int |
| is_complete_command (struct cmd_list_element *c) |
| { |
| return cmd_cfunc_eq (c, complete_command); |
| } |
| |
| static void |
| show_version (const char *args, int from_tty) |
| { |
| print_gdb_version (gdb_stdout, true); |
| printf_filtered ("\n"); |
| } |
| |
| static void |
| show_configuration (const char *args, int from_tty) |
| { |
| print_gdb_configuration (gdb_stdout); |
| } |
| |
| /* Handle the quit command. */ |
| |
| void |
| quit_command (const char *args, int from_tty) |
| { |
| int exit_code = 0; |
| |
| /* An optional expression may be used to cause gdb to terminate with |
| the value of that expression. */ |
| if (args) |
| { |
| struct value *val = parse_and_eval (args); |
| |
| exit_code = (int) value_as_long (val); |
| } |
| |
| if (!quit_confirm ()) |
| error (_("Not confirmed.")); |
| |
| query_if_trace_running (from_tty); |
| |
| quit_force (args ? &exit_code : NULL, from_tty); |
| } |
| |
| static void |
| pwd_command (const char *args, int from_tty) |
| { |
| if (args) |
| error (_("The \"pwd\" command does not take an argument: %s"), args); |
| |
| gdb::unique_xmalloc_ptr<char> cwd (getcwd (NULL, 0)); |
| |
| if (cwd == NULL) |
| error (_("Error finding name of working directory: %s"), |
| safe_strerror (errno)); |
| |
| if (strcmp (cwd.get (), current_directory) != 0) |
| printf_unfiltered (_("Working directory %s\n (canonically %s).\n"), |
| current_directory, cwd.get ()); |
| else |
| printf_unfiltered (_("Working directory %s.\n"), current_directory); |
| } |
| |
| void |
| cd_command (const char *dir, int from_tty) |
| { |
| int len; |
| /* Found something other than leading repetitions of "/..". */ |
| int found_real_path; |
| char *p; |
| |
| /* If the new directory is absolute, repeat is a no-op; if relative, |
| repeat might be useful but is more likely to be a mistake. */ |
| dont_repeat (); |
| |
| gdb::unique_xmalloc_ptr<char> dir_holder |
| (tilde_expand (dir != NULL ? dir : "~")); |
| dir = dir_holder.get (); |
| |
| if (chdir (dir) < 0) |
| perror_with_name (dir); |
| |
| #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| /* There's too much mess with DOSish names like "d:", "d:.", |
| "d:./foo" etc. Instead of having lots of special #ifdef'ed code, |
| simply get the canonicalized name of the current directory. */ |
| gdb::unique_xmalloc_ptr<char> cwd (getcwd (NULL, 0)); |
| dir = cwd.get (); |
| #endif |
| |
| len = strlen (dir); |
| if (IS_DIR_SEPARATOR (dir[len - 1])) |
| { |
| /* Remove the trailing slash unless this is a root directory |
| (including a drive letter on non-Unix systems). */ |
| if (!(len == 1) /* "/" */ |
| #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
| && !(len == 3 && dir[1] == ':') /* "d:/" */ |
| #endif |
| ) |
| len--; |
| } |
| |
| dir_holder.reset (savestring (dir, len)); |
| if (IS_ABSOLUTE_PATH (dir_holder.get ())) |
| { |
| xfree (current_directory); |
| current_directory = dir_holder.release (); |
| } |
| else |
| { |
| if (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])) |
| current_directory = concat (current_directory, dir_holder.get (), |
| (char *) NULL); |
| else |
| current_directory = concat (current_directory, SLASH_STRING, |
| dir_holder.get (), (char *) NULL); |
| } |
| |
| /* Now simplify any occurrences of `.' and `..' in the pathname. */ |
| |
| found_real_path = 0; |
| for (p = current_directory; *p;) |
| { |
| if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' |
| && (p[2] == 0 || IS_DIR_SEPARATOR (p[2]))) |
| memmove (p, p + 2, strlen (p + 2) + 1); |
| else if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' && p[2] == '.' |
| && (p[3] == 0 || IS_DIR_SEPARATOR (p[3]))) |
| { |
| if (found_real_path) |
| { |
| /* Search backwards for the directory just before the "/.." |
| and obliterate it and the "/..". */ |
| char *q = p; |
| |
| while (q != current_directory && !IS_DIR_SEPARATOR (q[-1])) |
| --q; |
| |
| if (q == current_directory) |
| /* current_directory is |
| a relative pathname ("can't happen"--leave it alone). */ |
| ++p; |
| else |
| { |
| memmove (q - 1, p + 3, strlen (p + 3) + 1); |
| p = q - 1; |
| } |
| } |
| else |
| /* We are dealing with leading repetitions of "/..", for |
| example "/../..", which is the Mach super-root. */ |
| p += 3; |
| } |
| else |
| { |
| found_real_path = 1; |
| ++p; |
| } |
| } |
| |
| forget_cached_source_info (); |
| |
| if (from_tty) |
| pwd_command ((char *) 0, 1); |
| } |
| |
| /* Show the current value of the 'script-extension' option. */ |
| |
| static void |
| show_script_ext_mode (struct ui_file *file, int from_tty, |
| struct cmd_list_element *c, const char *value) |
| { |
| fprintf_filtered (file, |
| _("Script filename extension recognition is \"%s\".\n"), |
| value); |
| } |
| |
| /* Try to open SCRIPT_FILE. |
| If successful, the full path name is stored in *FULL_PATHP, |
| and the stream is returned. |
| If not successful, return NULL; errno is set for the last file |
| we tried to open. |
| |
| If SEARCH_PATH is non-zero, and the file isn't found in cwd, |
| search for it in the source search path. */ |
| |
| gdb::optional<open_script> |
| find_and_open_script (const char *script_file, int search_path) |
| { |
| int fd; |
| openp_flags search_flags = OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH; |
| gdb::optional<open_script> opened; |
| |
| gdb::unique_xmalloc_ptr<char> file (tilde_expand (script_file)); |
| |
| if (search_path) |
| search_flags |= OPF_SEARCH_IN_PATH; |
| |
| /* Search for and open 'file' on the search path used for source |
| files. Put the full location in *FULL_PATHP. */ |
| gdb::unique_xmalloc_ptr<char> full_path; |
| fd = openp (source_path, search_flags, |
| file.get (), O_RDONLY, &full_path); |
| |
| if (fd == -1) |
| return opened; |
| |
| FILE *result = fdopen (fd, FOPEN_RT); |
| if (result == NULL) |
| { |
| int save_errno = errno; |
| |
| close (fd); |
| errno = save_errno; |
| } |
| else |
| opened.emplace (gdb_file_up (result), std::move (full_path)); |
| |
| return opened; |
| } |
| |
| /* Load script FILE, which has already been opened as STREAM. |
| FILE_TO_OPEN is the form of FILE to use if one needs to open the file. |
| This is provided as FILE may have been found via the source search path. |
| An important thing to note here is that FILE may be a symlink to a file |
| with a different or non-existing suffix, and thus one cannot infer the |
| extension language from FILE_TO_OPEN. */ |
| |
| static void |
| source_script_from_stream (FILE *stream, const char *file, |
| const char *file_to_open) |
| { |
| if (script_ext_mode != script_ext_off) |
| { |
| const struct extension_language_defn *extlang |
| = get_ext_lang_of_file (file); |
| |
| if (extlang != NULL) |
| { |
| if (ext_lang_present_p (extlang)) |
| { |
| script_sourcer_func *sourcer |
| = ext_lang_script_sourcer (extlang); |
| |
| gdb_assert (sourcer != NULL); |
| sourcer (extlang, stream, file_to_open); |
| return; |
| } |
| else if (script_ext_mode == script_ext_soft) |
| { |
| /* Assume the file is a gdb script. |
| This is handled below. */ |
| } |
| else |
| throw_ext_lang_unsupported (extlang); |
| } |
| } |
| |
| 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); |
| } |
| |
| reset_terminal_style (gdb_stdout); |
| |
| /* 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 = get_shell (); |
| |
| close_most_fds (); |
| |
| /* 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 = 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, source_lines_range (first), 0); |
| } |
| |
| /* "l" or "l +" lists next ten lines. */ |
| else if (arg == NULL || arg[0] == '+') |
| print_source_lines (cursal.symtab, |
| source_lines_range (cursal.line), 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)); |
| source_lines_range range (get_first_line_listed (), |
| source_lines_range::BACKWARD); |
| print_source_lines (cursal.symtab, range, 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) |
| { |
| source_lines_range range (sal_end.line + 1, |
| source_lines_range::BACKWARD); |
| print_source_lines (sal_end.symtab, range, 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, source_lines_range (first_line), 0); |
| } |
| } |
| else if (dummy_end) |
| print_source_lines (sal.symtab, source_lines_range (sal.line), 0); |
| else |
| print_source_lines (sal.symtab, |
| source_lines_range (sal.line, (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. |
| BLOCK is the block to disassemble; it needs to be provided |
| when non-contiguous blocks are disassembled; otherwise |
| it can be NULL. |
| 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, |
| const struct block *block, |
| 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); |
| if (block == nullptr || BLOCK_CONTIGUOUS_P (block)) |
| { |
| if (name == NULL) |
| 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); |
| } |
| else |
| { |
| for (int i = 0; i < BLOCK_NRANGES (block); i++) |
| { |
| CORE_ADDR range_low = BLOCK_RANGE_START (block, i); |
| CORE_ADDR range_high = BLOCK_RANGE_END (block, i); |
| printf_filtered (_("Address range %s to %s:\n"), |
| paddress (gdbarch, range_low), |
| paddress (gdbarch, range_high)); |
| gdb_disassembly (gdbarch, current_uiout, flags, -1, |
| range_low, range_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; |
| const struct block *block; |
| |
| 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, &block) == 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, block, 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; |
| const struct block *block = nullptr; |
| |
| 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, &block) == 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, block, 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); |
| } |