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https://sourceware.org/git/binutils-gdb.git
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fdbc98707b
( See original discussion and prototype here: https://sourceware.org/ml/gdb-patches/2019-05/msg00570.html ) (gdb) help with Temporarily set SETTING to VALUE, run COMMAND, and restore SETTING. Usage: with SETTING [VALUE] [-- COMMAND] Usage: w SETTING [VALUE] [-- COMMAND] With no COMMAND, repeats the last executed command. SETTING is any setting you can change with the "set" subcommands. E.g.: with language pascal -- print obj with print elements unlimited -- print obj As can be seen above, the "with" command is just like "set", but instead of setting the setting permanently, it sets the setting, runs a command and then restores the setting. (gdb) p g_s $1 = {a = 1, b = 2, c = 3} (gdb) with language ada -- print g_s $2 = (a => 1, b => 2, c => 3) Warning: the current language does not match this frame. (gdb) show language The current source language is "auto; currently c". (gdb) with print elements 100 -- with print object on -- print 1 $3 = 1 You can shorten things a bit though, as long as unambiguous. So this: (gdb) with print elements 100 -- with print object off -- print 1 is the same as: (gdb) w p el 100 -- w p o 0 -- p 1 Note that the patch adds a "w" alias for "with", as "w" is not currently taken: (gdb) w Ambiguous command "w": watch, wh, whatis, where, while, while-stepping, winheight, ws. Let me know if you'd prefer to reserve "w" for one of the other commands above. IMHO, this command will end up being used frequently enough that it deserves the "w" shorthand. A nice feature is that this is fully integrated with TAB-completion: (gdb) with p[TAB] pagination print prompt python (gdb) with print [TAB] address max-depth static-members array max-symbolic-offset symbol array-indexes null-stop symbol-filename asm-demangle object symbol-loading demangle pascal_static-members thread-events elements pretty type entry-values raw union frame-arguments repeats vtbl inferior-events sevenbit-strings (gdb) with print [TAB] (gdb) with print elements unlimited -- thread apply all -[TAB] -ascending -c -q -s (gdb) with print elements unlimited -- print -[TAB] -address -max-depth -repeats -vtbl -array -null-stop -static-members -array-indexes -object -symbol -elements -pretty -union The main advantage of this new command compared to command options, like the new "print -OPT", is that this command works with any setting, and, it works nicely when you want to override a setting while running a user-defined command, like: (gdb) with print pretty -- usercmd The disadvantage is that it isn't as compact or easy to type. I think of command options and this command as complementary. I think that even with this new command, it makes sense to continue developing the command options in the direction of exposing most-oft-used settings as command options. Inspired by Philippe's "/" command proposal, if no command is specified, then the last command is re-invoked, under the overridden setting: (gdb) p g_s $1 = {a = 1, b = 2, c = 3} (gdb) with language ada $2 = (a => 1, b => 2, c => 3) Warning: the current language does not match this frame. Note: "with" requires "--" to separate the setting from the command. It might be possible to do without that, but, I haven't tried it yet, and I think that this can go in without it. We can always downgrade to making "--" optional if we manage to make it work. On to the patch itself, the implementation of the command is simpler than one might expect. A few details: - I factored out a bit from pipe_command into repeat_previous directly, because otherwise I'd need to copy&paste the same code and same error message in the with command. - The parse_cli_var_uinteger / parse_cli_var_zuinteger_unlimited / do_set_command changes are necessary since we can now pass an empty string as argument. - do_show_command was split in two, as a FIXME comment suggests, but for a different reason: we need to get a string version of a "set" command's value, and we already had code for that in do_show_command. That code is now factored out to the new get_setshow_command_value_string function. - There's a new "maint with" command added too: (gdb) help maint with Like "with", but works with "maintenance set" variables. Usage: maintenance with SETTING [VALUE] [-- COMMAND] With no COMMAND, repeats the last executed command. SETTING is any setting you can change with the "maintenance set" subcommands. "with" and "maint with" share 99% of the implementation. This might be useful on its own, but it's also useful for testing, since with this, we can use the "maint set/show test-settings" settings for exercising the "with" machinery with all the command type variants (all enum var_types). This is done in the new gdb/base/with.exp testcase. The documentation bits are originally based on Philippe's docs for the "/" command, hence the attribution in the ChangeLog. gdb/ChangeLog: 2019-07-03 Pedro Alves <palves@redhat.com> * NEWS (New commands): Mention "with" and "maint with". * cli/cli-cmds.c (with_command_1, with_command_completer_1) (with_command, with_command_completer): New. (pipe_command): Adjust to new repeat_previous interface. (_initialize_cli_cmds): Install the "with" command and its "w" alias. * cli/cli-cmds.h (with_command_1, with_command_completer_1): New declarations. * cli/cli-setshow.c (parse_cli_var_uinteger) (parse_cli_var_zuinteger_unlimited, do_set_command): Handle empty argument strings for all var_types. (get_setshow_command_value_string): New, factored out from ... (do_show_command): ... this. * cli/cli-setshow.h: Include <string>. (get_setshow_command_value_string): Declare. * command.h (repeat_previous): Now returns const char *. Adjust comment. * maint.c: Include "cli/cli-cmds.h". (maintenance_with_cmd, maintenance_with_cmd_completer): New. (_initialize_maint_cmds): Register the "maintenance with" command. * top.c (repeat_previous): Move bits from pipe_command here: Return the saved command line, if any; error out if there's no command to relaunch. gdb/doc/ChangeLog: 2019-07-03 Pedro Alves <palves@redhat.com> Philippe Waroquiers <philippe.waroquiers@skynet.be> * gdb.texinfo (Command Settings): New node documenting the general concept of settings, how to change them, and the new "with" command. (Maintenance Commands): Document "maint with". gdb/testsuite/ChangeLog: 2019-07-03 Pedro Alves <palves@redhat.com> * gdb.base/with.c: New file. * gdb.base/with.exp: New file.
2294 lines
65 KiB
C
2294 lines
65 KiB
C
/* Top level stuff for GDB, the GNU debugger.
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Copyright (C) 1986-2019 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
|
||
(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 "gdbcmd.h"
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#include "cli/cli-cmds.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-decode.h"
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#include "symtab.h"
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#include "inferior.h"
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#include "infrun.h"
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#include <signal.h>
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#include "target.h"
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#include "target-dcache.h"
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#include "breakpoint.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "language.h"
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#include "terminal.h"
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#include "common/job-control.h"
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#include "annotate.h"
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#include "completer.h"
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#include "top.h"
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#include "common/version.h"
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#include "serial.h"
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#include "main.h"
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#include "event-loop.h"
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#include "gdbthread.h"
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#include "extension.h"
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#include "interps.h"
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#include "observable.h"
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#include "maint.h"
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#include "filenames.h"
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#include "frame.h"
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#include "common/buffer.h"
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#include "gdb_select.h"
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#include "common/scope-exit.h"
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/* readline include files. */
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#include "readline/readline.h"
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#include "readline/history.h"
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/* readline defines this. */
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#undef savestring
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#include <sys/types.h>
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#include "event-top.h"
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#include <sys/stat.h>
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#include <ctype.h>
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#include "ui-out.h"
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#include "cli-out.h"
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#include "tracepoint.h"
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#include "inf-loop.h"
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#if defined(TUI)
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# include "tui/tui.h"
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#endif
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#ifndef O_NOCTTY
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# define O_NOCTTY 0
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#endif
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extern void initialize_all_files (void);
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#define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
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#define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix
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#define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix
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/* Default command line prompt. This is overriden in some configs. */
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#ifndef DEFAULT_PROMPT
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#define DEFAULT_PROMPT "(gdb) "
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#endif
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/* Generate a function that exports a pointer to a field of the
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current UI. */
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#define gen_ret_current_ui_field_ptr(type, name) \
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type * \
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current_ui_## name ## _ptr (void) \
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{ \
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return ¤t_ui->m_ ## name; \
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}
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gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stdout)
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gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stdin)
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gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stderr)
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gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stdlog)
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gen_ret_current_ui_field_ptr (struct ui_out *, current_uiout)
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/* Initialization file name for gdb. This is host-dependent. */
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const char gdbinit[] = GDBINIT;
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int inhibit_gdbinit = 0;
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extern char lang_frame_mismatch_warn[]; /* language.c */
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/* Flag for whether we want to confirm potentially dangerous
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operations. Default is yes. */
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int confirm = 1;
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static void
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show_confirm (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, _("Whether to confirm potentially "
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"dangerous operations is %s.\n"),
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value);
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}
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/* Current working directory. */
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char *current_directory;
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/* The last command line executed on the console. Used for command
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repetitions when the user enters an empty line. */
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static char *saved_command_line;
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/* If not NULL, the arguments that should be passed if
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saved_command_line is repeated. */
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static const char *repeat_arguments;
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/* The previous last command line executed on the console. Used for command
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repetitions when a command wants to relaunch the previously launched
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command. We need this as when a command is running, saved_command_line
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already contains the line of the currently executing command. */
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char *previous_saved_command_line;
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/* If not NULL, the arguments that should be passed if the
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previous_saved_command_line is repeated. */
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static const char *previous_repeat_arguments;
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/* Nonzero if the current command is modified by "server ". This
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affects things like recording into the command history, commands
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repeating on RETURN, etc. This is so a user interface (emacs, GUI,
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whatever) can issue its own commands and also send along commands
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from the user, and have the user not notice that the user interface
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is issuing commands too. */
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int server_command;
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/* Timeout limit for response from target. */
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/* The default value has been changed many times over the years. It
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was originally 5 seconds. But that was thought to be a long time
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to sit and wait, so it was changed to 2 seconds. That was thought
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to be plenty unless the connection was going through some terminal
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server or multiplexer or other form of hairy serial connection.
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In mid-1996, remote_timeout was moved from remote.c to top.c and
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it began being used in other remote-* targets. It appears that the
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default was changed to 20 seconds at that time, perhaps because the
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Renesas E7000 ICE didn't always respond in a timely manner.
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But if 5 seconds is a long time to sit and wait for retransmissions,
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20 seconds is far worse. This demonstrates the difficulty of using
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a single variable for all protocol timeouts.
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As remote.c is used much more than remote-e7000.c, it was changed
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back to 2 seconds in 1999. */
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int remote_timeout = 2;
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/* Non-zero tells remote* modules to output debugging info. */
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int remote_debug = 0;
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/* Sbrk location on entry to main. Used for statistics only. */
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#ifdef HAVE_USEFUL_SBRK
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char *lim_at_start;
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#endif
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/* Hooks for alternate command interfaces. */
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/* This hook is called from within gdb's many mini-event loops which
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could steal control from a real user interface's event loop. It
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returns non-zero if the user is requesting a detach, zero
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otherwise. */
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int (*deprecated_ui_loop_hook) (int);
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/* Called from print_frame_info to list the line we stopped in. */
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void (*deprecated_print_frame_info_listing_hook) (struct symtab * s,
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int line,
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int stopline,
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int noerror);
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/* Replaces most of query. */
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int (*deprecated_query_hook) (const char *, va_list);
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/* Replaces most of warning. */
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void (*deprecated_warning_hook) (const char *, va_list);
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/* These three functions support getting lines of text from the user.
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They are used in sequence. First deprecated_readline_begin_hook is
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called with a text string that might be (for example) a message for
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the user to type in a sequence of commands to be executed at a
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breakpoint. If this function calls back to a GUI, it might take
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this opportunity to pop up a text interaction window with this
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message. Next, deprecated_readline_hook is called with a prompt
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that is emitted prior to collecting the user input. It can be
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called multiple times. Finally, deprecated_readline_end_hook is
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called to notify the GUI that we are done with the interaction
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window and it can close it. */
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void (*deprecated_readline_begin_hook) (const char *, ...);
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char *(*deprecated_readline_hook) (const char *);
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void (*deprecated_readline_end_hook) (void);
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/* Called as appropriate to notify the interface that we have attached
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to or detached from an already running process. */
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void (*deprecated_attach_hook) (void);
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void (*deprecated_detach_hook) (void);
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/* Called when going to wait for the target. Usually allows the GUI
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to run while waiting for target events. */
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ptid_t (*deprecated_target_wait_hook) (ptid_t ptid,
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struct target_waitstatus *status,
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int options);
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/* Used by UI as a wrapper around command execution. May do various
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things like enabling/disabling buttons, etc... */
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void (*deprecated_call_command_hook) (struct cmd_list_element * c,
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const char *cmd, int from_tty);
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/* Called when the current thread changes. Argument is thread id. */
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void (*deprecated_context_hook) (int id);
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/* The highest UI number ever assigned. */
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static int highest_ui_num;
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/* See top.h. */
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ui::ui (FILE *instream_, FILE *outstream_, FILE *errstream_)
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: next (nullptr),
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num (++highest_ui_num),
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call_readline (nullptr),
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input_handler (nullptr),
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command_editing (0),
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interp_info (nullptr),
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async (0),
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secondary_prompt_depth (0),
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stdin_stream (instream_),
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instream (instream_),
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outstream (outstream_),
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errstream (errstream_),
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input_fd (fileno (instream)),
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input_interactive_p (ISATTY (instream)),
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prompt_state (PROMPT_NEEDED),
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m_gdb_stdout (new stdio_file (outstream)),
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m_gdb_stdin (new stdio_file (instream)),
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m_gdb_stderr (new stderr_file (errstream)),
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m_gdb_stdlog (m_gdb_stderr),
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m_current_uiout (nullptr)
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{
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buffer_init (&line_buffer);
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if (ui_list == NULL)
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ui_list = this;
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else
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{
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struct ui *last;
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for (last = ui_list; last->next != NULL; last = last->next)
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;
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last->next = this;
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}
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}
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ui::~ui ()
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{
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struct ui *ui, *uiprev;
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uiprev = NULL;
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for (ui = ui_list; ui != NULL; uiprev = ui, ui = ui->next)
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if (ui == this)
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break;
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gdb_assert (ui != NULL);
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if (uiprev != NULL)
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uiprev->next = next;
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else
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ui_list = next;
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delete m_gdb_stdin;
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delete m_gdb_stdout;
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delete m_gdb_stderr;
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}
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/* Open file named NAME for read/write, making sure not to make it the
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controlling terminal. */
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static gdb_file_up
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open_terminal_stream (const char *name)
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{
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int fd;
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fd = gdb_open_cloexec (name, O_RDWR | O_NOCTTY, 0);
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if (fd < 0)
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perror_with_name (_("opening terminal failed"));
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return gdb_file_up (fdopen (fd, "w+"));
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}
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/* Implementation of the "new-ui" command. */
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static void
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new_ui_command (const char *args, int from_tty)
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{
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gdb_file_up stream[3];
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int i;
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int argc;
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const char *interpreter_name;
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const char *tty_name;
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dont_repeat ();
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gdb_argv argv (args);
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argc = argv.count ();
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if (argc < 2)
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error (_("Usage: new-ui INTERPRETER TTY"));
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interpreter_name = argv[0];
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tty_name = argv[1];
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{
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scoped_restore save_ui = make_scoped_restore (¤t_ui);
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/* Open specified terminal, once for each of
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stdin/stdout/stderr. */
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for (i = 0; i < 3; i++)
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stream[i] = open_terminal_stream (tty_name);
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std::unique_ptr<ui> ui
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(new struct ui (stream[0].get (), stream[1].get (), stream[2].get ()));
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ui->async = 1;
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current_ui = ui.get ();
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set_top_level_interpreter (interpreter_name);
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interp_pre_command_loop (top_level_interpreter ());
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/* Make sure the files are not closed. */
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stream[0].release ();
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stream[1].release ();
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stream[2].release ();
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ui.release ();
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}
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printf_unfiltered ("New UI allocated\n");
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}
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/* Handler for SIGHUP. */
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#ifdef SIGHUP
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/* NOTE 1999-04-29: This function will be static again, once we modify
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gdb to use the event loop as the default command loop and we merge
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event-top.c into this file, top.c. */
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/* static */ void
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quit_cover (void)
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{
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/* Stop asking user for confirmation --- we're exiting. This
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prevents asking the user dumb questions. */
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confirm = 0;
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quit_command ((char *) 0, 0);
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}
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#endif /* defined SIGHUP */
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/* Line number we are currently in, in a file which is being sourced. */
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/* NOTE 1999-04-29: This variable will be static again, once we modify
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gdb to use the event loop as the default command loop and we merge
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event-top.c into this file, top.c. */
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||
/* static */ int source_line_number;
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||
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/* Name of the file we are sourcing. */
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c. */
|
||
/* static */ std::string source_file_name;
|
||
|
||
/* Read commands from STREAM. */
|
||
void
|
||
read_command_file (FILE *stream)
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
scoped_restore save_instream
|
||
= make_scoped_restore (&ui->instream, stream);
|
||
|
||
/* Read commands from `instream' and execute them until end of file
|
||
or error reading instream. */
|
||
|
||
while (ui->instream != NULL && !feof (ui->instream))
|
||
{
|
||
char *command;
|
||
|
||
/* Get a command-line. This calls the readline package. */
|
||
command = command_line_input (NULL, NULL);
|
||
if (command == NULL)
|
||
break;
|
||
command_handler (command);
|
||
}
|
||
}
|
||
|
||
void (*pre_init_ui_hook) (void);
|
||
|
||
#ifdef __MSDOS__
|
||
static void
|
||
do_chdir_cleanup (void *old_dir)
|
||
{
|
||
chdir ((const char *) old_dir);
|
||
xfree (old_dir);
|
||
}
|
||
#endif
|
||
|
||
scoped_value_mark
|
||
prepare_execute_command ()
|
||
{
|
||
/* With multiple threads running while the one we're examining is
|
||
stopped, the dcache can get stale without us being able to detect
|
||
it. For the duration of the command, though, use the dcache to
|
||
help things like backtrace. */
|
||
if (non_stop)
|
||
target_dcache_invalidate ();
|
||
|
||
return scoped_value_mark ();
|
||
}
|
||
|
||
/* Tell the user if the language has changed (except first time) after
|
||
executing a command. */
|
||
|
||
void
|
||
check_frame_language_change (void)
|
||
{
|
||
static int warned = 0;
|
||
struct frame_info *frame;
|
||
|
||
/* First make sure that a new frame has been selected, in case the
|
||
command or the hooks changed the program state. */
|
||
frame = deprecated_safe_get_selected_frame ();
|
||
if (current_language != expected_language)
|
||
{
|
||
if (language_mode == language_mode_auto && info_verbose)
|
||
{
|
||
language_info (1); /* Print what changed. */
|
||
}
|
||
warned = 0;
|
||
}
|
||
|
||
/* Warn the user if the working language does not match the language
|
||
of the current frame. Only warn the user if we are actually
|
||
running the program, i.e. there is a stack. */
|
||
/* FIXME: This should be cacheing the frame and only running when
|
||
the frame changes. */
|
||
|
||
if (has_stack_frames ())
|
||
{
|
||
enum language flang;
|
||
|
||
flang = get_frame_language (frame);
|
||
if (!warned
|
||
&& flang != language_unknown
|
||
&& flang != current_language->la_language)
|
||
{
|
||
printf_filtered ("%s\n", lang_frame_mismatch_warn);
|
||
warned = 1;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* See top.h. */
|
||
|
||
void
|
||
wait_sync_command_done (void)
|
||
{
|
||
/* Processing events may change the current UI. */
|
||
scoped_restore save_ui = make_scoped_restore (¤t_ui);
|
||
struct ui *ui = current_ui;
|
||
|
||
while (gdb_do_one_event () >= 0)
|
||
if (ui->prompt_state != PROMPT_BLOCKED)
|
||
break;
|
||
}
|
||
|
||
/* See top.h. */
|
||
|
||
void
|
||
maybe_wait_sync_command_done (int was_sync)
|
||
{
|
||
/* If the interpreter is in sync mode (we're running a user
|
||
command's list, running command hooks or similars), and we
|
||
just ran a synchronous command that started the target, wait
|
||
for that command to end. */
|
||
if (!current_ui->async
|
||
&& !was_sync
|
||
&& current_ui->prompt_state == PROMPT_BLOCKED)
|
||
wait_sync_command_done ();
|
||
}
|
||
|
||
/* See command.h. */
|
||
|
||
void
|
||
set_repeat_arguments (const char *args)
|
||
{
|
||
repeat_arguments = args;
|
||
}
|
||
|
||
/* Execute the line P as a command, in the current user context.
|
||
Pass FROM_TTY as second argument to the defining function. */
|
||
|
||
void
|
||
execute_command (const char *p, int from_tty)
|
||
{
|
||
struct cmd_list_element *c;
|
||
const char *line;
|
||
const char *cmd_start = p;
|
||
|
||
auto cleanup_if_error = make_scope_exit (bpstat_clear_actions);
|
||
scoped_value_mark cleanup = prepare_execute_command ();
|
||
|
||
/* This can happen when command_line_input hits end of file. */
|
||
if (p == NULL)
|
||
{
|
||
cleanup_if_error.release ();
|
||
return;
|
||
}
|
||
|
||
target_log_command (p);
|
||
|
||
while (*p == ' ' || *p == '\t')
|
||
p++;
|
||
if (*p)
|
||
{
|
||
const char *cmd = p;
|
||
const char *arg;
|
||
int was_sync = current_ui->prompt_state == PROMPT_BLOCKED;
|
||
|
||
line = p;
|
||
|
||
/* If trace-commands is set then this will print this command. */
|
||
print_command_trace ("%s", p);
|
||
|
||
c = lookup_cmd (&cmd, cmdlist, "", 0, 1);
|
||
p = cmd;
|
||
|
||
scoped_restore save_repeat_args
|
||
= make_scoped_restore (&repeat_arguments, nullptr);
|
||
const char *args_pointer = p;
|
||
|
||
/* Pass null arg rather than an empty one. */
|
||
arg = *p ? p : 0;
|
||
|
||
/* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
|
||
while the is_complete_command(cfunc) test is just plain
|
||
bogus. They should both be replaced by a test of the form
|
||
c->strip_trailing_white_space_p. */
|
||
/* NOTE: cagney/2002-02-02: The function.cfunc in the below
|
||
can't be replaced with func. This is because it is the
|
||
cfunc, and not the func, that has the value that the
|
||
is_complete_command hack is testing for. */
|
||
/* Clear off trailing whitespace, except for set and complete
|
||
command. */
|
||
std::string without_whitespace;
|
||
if (arg
|
||
&& c->type != set_cmd
|
||
&& !is_complete_command (c))
|
||
{
|
||
const char *old_end = arg + strlen (arg) - 1;
|
||
p = old_end;
|
||
while (p >= arg && (*p == ' ' || *p == '\t'))
|
||
p--;
|
||
if (p != old_end)
|
||
{
|
||
without_whitespace = std::string (arg, p + 1);
|
||
arg = without_whitespace.c_str ();
|
||
}
|
||
}
|
||
|
||
/* If this command has been pre-hooked, run the hook first. */
|
||
execute_cmd_pre_hook (c);
|
||
|
||
if (c->deprecated_warn_user)
|
||
deprecated_cmd_warning (line);
|
||
|
||
/* c->user_commands would be NULL in the case of a python command. */
|
||
if (c->theclass == class_user && c->user_commands)
|
||
execute_user_command (c, arg);
|
||
else if (c->type == set_cmd)
|
||
do_set_command (arg, from_tty, c);
|
||
else if (c->type == show_cmd)
|
||
do_show_command (arg, from_tty, c);
|
||
else if (!cmd_func_p (c))
|
||
error (_("That is not a command, just a help topic."));
|
||
else if (deprecated_call_command_hook)
|
||
deprecated_call_command_hook (c, arg, from_tty);
|
||
else
|
||
cmd_func (c, arg, from_tty);
|
||
|
||
maybe_wait_sync_command_done (was_sync);
|
||
|
||
/* If this command has been post-hooked, run the hook last. */
|
||
execute_cmd_post_hook (c);
|
||
|
||
if (repeat_arguments != NULL && cmd_start == saved_command_line)
|
||
{
|
||
gdb_assert (strlen (args_pointer) >= strlen (repeat_arguments));
|
||
strcpy (saved_command_line + (args_pointer - cmd_start),
|
||
repeat_arguments);
|
||
}
|
||
}
|
||
|
||
/* Only perform the frame-language-change check if the command
|
||
we just finished executing did not resume the inferior's execution.
|
||
If it did resume the inferior, we will do that check after
|
||
the inferior stopped. */
|
||
if (has_stack_frames () && inferior_thread ()->state != THREAD_RUNNING)
|
||
check_frame_language_change ();
|
||
|
||
cleanup_if_error.release ();
|
||
}
|
||
|
||
/* Run execute_command for P and FROM_TTY. Sends its output to FILE,
|
||
do not display it to the screen. BATCH_FLAG will be
|
||
temporarily set to true. */
|
||
|
||
void
|
||
execute_command_to_ui_file (struct ui_file *file, const char *p, int from_tty)
|
||
{
|
||
/* GDB_STDOUT should be better already restored during these
|
||
restoration callbacks. */
|
||
set_batch_flag_and_restore_page_info save_page_info;
|
||
|
||
scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0);
|
||
|
||
{
|
||
current_uiout->redirect (file);
|
||
ui_out_redirect_pop redirect_popper (current_uiout);
|
||
|
||
scoped_restore save_stdout
|
||
= make_scoped_restore (&gdb_stdout, file);
|
||
scoped_restore save_stderr
|
||
= make_scoped_restore (&gdb_stderr, file);
|
||
scoped_restore save_stdlog
|
||
= make_scoped_restore (&gdb_stdlog, file);
|
||
scoped_restore save_stdtarg
|
||
= make_scoped_restore (&gdb_stdtarg, file);
|
||
scoped_restore save_stdtargerr
|
||
= make_scoped_restore (&gdb_stdtargerr, file);
|
||
|
||
execute_command (p, from_tty);
|
||
}
|
||
}
|
||
|
||
/* Run execute_command for P and FROM_TTY. Capture its output into the
|
||
returned string, do not display it to the screen. BATCH_FLAG will be
|
||
temporarily set to true. */
|
||
|
||
std::string
|
||
execute_command_to_string (const char *p, int from_tty,
|
||
bool term_out)
|
||
{
|
||
string_file str_file (term_out);
|
||
|
||
execute_command_to_ui_file (&str_file, p, from_tty);
|
||
return std::move (str_file.string ());
|
||
}
|
||
|
||
|
||
/* When nonzero, cause dont_repeat to do nothing. This should only be
|
||
set via prevent_dont_repeat. */
|
||
|
||
static int suppress_dont_repeat = 0;
|
||
|
||
/* See command.h */
|
||
|
||
void
|
||
dont_repeat (void)
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
if (suppress_dont_repeat || server_command)
|
||
return;
|
||
|
||
/* If we aren't reading from standard input, we are saving the last
|
||
thing read from stdin in line and don't want to delete it. Null
|
||
lines won't repeat here in any case. */
|
||
if (ui->instream == ui->stdin_stream)
|
||
{
|
||
*saved_command_line = 0;
|
||
repeat_arguments = NULL;
|
||
}
|
||
}
|
||
|
||
/* See command.h */
|
||
|
||
const char *
|
||
repeat_previous ()
|
||
{
|
||
/* Do not repeat this command, as this command is a repeating command. */
|
||
dont_repeat ();
|
||
|
||
/* We cannot free saved_command_line, as this line is being executed,
|
||
so swap it with previous_saved_command_line. */
|
||
std::swap (previous_saved_command_line, saved_command_line);
|
||
std::swap (previous_repeat_arguments, repeat_arguments);
|
||
|
||
const char *prev = skip_spaces (get_saved_command_line ());
|
||
if (*prev == '\0')
|
||
error (_("No previous command to relaunch"));
|
||
return prev;
|
||
}
|
||
|
||
/* See command.h. */
|
||
|
||
scoped_restore_tmpl<int>
|
||
prevent_dont_repeat (void)
|
||
{
|
||
return make_scoped_restore (&suppress_dont_repeat, 1);
|
||
}
|
||
|
||
/* See command.h. */
|
||
|
||
char *
|
||
get_saved_command_line ()
|
||
{
|
||
return saved_command_line;
|
||
}
|
||
|
||
/* See command.h. */
|
||
|
||
void
|
||
save_command_line (const char *cmd)
|
||
{
|
||
xfree (previous_saved_command_line);
|
||
previous_saved_command_line = saved_command_line;
|
||
previous_repeat_arguments = repeat_arguments;
|
||
saved_command_line = xstrdup (cmd);
|
||
repeat_arguments = NULL;
|
||
}
|
||
|
||
|
||
/* Read a line from the stream "instream" without command line editing.
|
||
|
||
It prints PROMPT once at the start.
|
||
Action is compatible with "readline", e.g. space for the result is
|
||
malloc'd and should be freed by the caller.
|
||
|
||
A NULL return means end of file. */
|
||
|
||
static char *
|
||
gdb_readline_no_editing (const char *prompt)
|
||
{
|
||
struct buffer line_buffer;
|
||
struct ui *ui = current_ui;
|
||
/* Read from stdin if we are executing a user defined command. This
|
||
is the right thing for prompt_for_continue, at least. */
|
||
FILE *stream = ui->instream != NULL ? ui->instream : stdin;
|
||
int fd = fileno (stream);
|
||
|
||
buffer_init (&line_buffer);
|
||
|
||
if (prompt != NULL)
|
||
{
|
||
/* Don't use a _filtered function here. It causes the assumed
|
||
character position to be off, since the newline we read from
|
||
the user is not accounted for. */
|
||
fputs_unfiltered (prompt, gdb_stdout);
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
while (1)
|
||
{
|
||
int c;
|
||
fd_set readfds;
|
||
|
||
QUIT;
|
||
|
||
/* Wait until at least one byte of data is available. Control-C
|
||
can interrupt interruptible_select, but not fgetc. */
|
||
FD_ZERO (&readfds);
|
||
FD_SET (fd, &readfds);
|
||
if (interruptible_select (fd + 1, &readfds, NULL, NULL, NULL) == -1)
|
||
{
|
||
if (errno == EINTR)
|
||
{
|
||
/* If this was ctrl-c, the QUIT above handles it. */
|
||
continue;
|
||
}
|
||
perror_with_name (("select"));
|
||
}
|
||
|
||
c = fgetc (stream);
|
||
|
||
if (c == EOF)
|
||
{
|
||
if (line_buffer.used_size > 0)
|
||
/* The last line does not end with a newline. Return it, and
|
||
if we are called again fgetc will still return EOF and
|
||
we'll return NULL then. */
|
||
break;
|
||
xfree (buffer_finish (&line_buffer));
|
||
return NULL;
|
||
}
|
||
|
||
if (c == '\n')
|
||
{
|
||
if (line_buffer.used_size > 0
|
||
&& line_buffer.buffer[line_buffer.used_size - 1] == '\r')
|
||
line_buffer.used_size--;
|
||
break;
|
||
}
|
||
|
||
buffer_grow_char (&line_buffer, c);
|
||
}
|
||
|
||
buffer_grow_char (&line_buffer, '\0');
|
||
return buffer_finish (&line_buffer);
|
||
}
|
||
|
||
/* Variables which control command line editing and history
|
||
substitution. These variables are given default values at the end
|
||
of this file. */
|
||
static int command_editing_p;
|
||
|
||
/* NOTE 1999-04-29: This variable will be static again, once we modify
|
||
gdb to use the event loop as the default command loop and we merge
|
||
event-top.c into this file, top.c. */
|
||
|
||
/* static */ int history_expansion_p;
|
||
|
||
static int write_history_p;
|
||
static void
|
||
show_write_history_p (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* The variable associated with the "set/show history size"
|
||
command. The value -1 means unlimited, and -2 means undefined. */
|
||
static int history_size_setshow_var = -2;
|
||
|
||
static void
|
||
show_history_size (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("The size of the command history is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* Variable associated with the "history remove-duplicates" option.
|
||
The value -1 means unlimited. */
|
||
static int history_remove_duplicates = 0;
|
||
|
||
static void
|
||
show_history_remove_duplicates (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file,
|
||
_("The number of history entries to look back at for "
|
||
"duplicates is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
static char *history_filename;
|
||
static void
|
||
show_history_filename (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("The filename in which to record "
|
||
"the command history is \"%s\".\n"),
|
||
value);
|
||
}
|
||
|
||
/* This is like readline(), but it has some gdb-specific behavior.
|
||
gdb may want readline in both the synchronous and async modes during
|
||
a single gdb invocation. At the ordinary top-level prompt we might
|
||
be using the async readline. That means we can't use
|
||
rl_pre_input_hook, since it doesn't work properly in async mode.
|
||
However, for a secondary prompt (" >", such as occurs during a
|
||
`define'), gdb wants a synchronous response.
|
||
|
||
We used to call readline() directly, running it in synchronous
|
||
mode. But mixing modes this way is not supported, and as of
|
||
readline 5.x it no longer works; the arrow keys come unbound during
|
||
the synchronous call. So we make a nested call into the event
|
||
loop. That's what gdb_readline_wrapper is for. */
|
||
|
||
/* A flag set as soon as gdb_readline_wrapper_line is called; we can't
|
||
rely on gdb_readline_wrapper_result, which might still be NULL if
|
||
the user types Control-D for EOF. */
|
||
static int gdb_readline_wrapper_done;
|
||
|
||
/* The result of the current call to gdb_readline_wrapper, once a newline
|
||
is seen. */
|
||
static char *gdb_readline_wrapper_result;
|
||
|
||
/* Any intercepted hook. Operate-and-get-next sets this, expecting it
|
||
to be called after the newline is processed (which will redisplay
|
||
the prompt). But in gdb_readline_wrapper we will not get a new
|
||
prompt until the next call, or until we return to the event loop.
|
||
So we disable this hook around the newline and restore it before we
|
||
return. */
|
||
static void (*saved_after_char_processing_hook) (void);
|
||
|
||
|
||
/* See top.h. */
|
||
|
||
int
|
||
gdb_in_secondary_prompt_p (struct ui *ui)
|
||
{
|
||
return ui->secondary_prompt_depth > 0;
|
||
}
|
||
|
||
|
||
/* This function is called when readline has seen a complete line of
|
||
text. */
|
||
|
||
static void
|
||
gdb_readline_wrapper_line (gdb::unique_xmalloc_ptr<char> &&line)
|
||
{
|
||
gdb_assert (!gdb_readline_wrapper_done);
|
||
gdb_readline_wrapper_result = line.release ();
|
||
gdb_readline_wrapper_done = 1;
|
||
|
||
/* Prevent operate-and-get-next from acting too early. */
|
||
saved_after_char_processing_hook = after_char_processing_hook;
|
||
after_char_processing_hook = NULL;
|
||
|
||
/* Prevent parts of the prompt from being redisplayed if annotations
|
||
are enabled, and readline's state getting out of sync. We'll
|
||
reinstall the callback handler, which puts the terminal in raw
|
||
mode (or in readline lingo, in prepped state), when we're next
|
||
ready to process user input, either in display_gdb_prompt, or if
|
||
we're handling an asynchronous target event and running in the
|
||
background, just before returning to the event loop to process
|
||
further input (or more target events). */
|
||
if (current_ui->command_editing)
|
||
gdb_rl_callback_handler_remove ();
|
||
}
|
||
|
||
class gdb_readline_wrapper_cleanup
|
||
{
|
||
public:
|
||
gdb_readline_wrapper_cleanup ()
|
||
: m_handler_orig (current_ui->input_handler),
|
||
m_already_prompted_orig (current_ui->command_editing
|
||
? rl_already_prompted : 0),
|
||
m_target_is_async_orig (target_is_async_p ()),
|
||
m_save_ui (¤t_ui)
|
||
{
|
||
current_ui->input_handler = gdb_readline_wrapper_line;
|
||
current_ui->secondary_prompt_depth++;
|
||
|
||
if (m_target_is_async_orig)
|
||
target_async (0);
|
||
}
|
||
|
||
~gdb_readline_wrapper_cleanup ()
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
if (ui->command_editing)
|
||
rl_already_prompted = m_already_prompted_orig;
|
||
|
||
gdb_assert (ui->input_handler == gdb_readline_wrapper_line);
|
||
ui->input_handler = m_handler_orig;
|
||
|
||
/* Don't restore our input handler in readline yet. That would make
|
||
readline prep the terminal (putting it in raw mode), while the
|
||
line we just read may trigger execution of a command that expects
|
||
the terminal in the default cooked/canonical mode, such as e.g.,
|
||
running Python's interactive online help utility. See
|
||
gdb_readline_wrapper_line for when we'll reinstall it. */
|
||
|
||
gdb_readline_wrapper_result = NULL;
|
||
gdb_readline_wrapper_done = 0;
|
||
ui->secondary_prompt_depth--;
|
||
gdb_assert (ui->secondary_prompt_depth >= 0);
|
||
|
||
after_char_processing_hook = saved_after_char_processing_hook;
|
||
saved_after_char_processing_hook = NULL;
|
||
|
||
if (m_target_is_async_orig)
|
||
target_async (1);
|
||
}
|
||
|
||
DISABLE_COPY_AND_ASSIGN (gdb_readline_wrapper_cleanup);
|
||
|
||
private:
|
||
|
||
void (*m_handler_orig) (gdb::unique_xmalloc_ptr<char> &&);
|
||
int m_already_prompted_orig;
|
||
|
||
/* Whether the target was async. */
|
||
int m_target_is_async_orig;
|
||
|
||
/* Processing events may change the current UI. */
|
||
scoped_restore_tmpl<struct ui *> m_save_ui;
|
||
};
|
||
|
||
char *
|
||
gdb_readline_wrapper (const char *prompt)
|
||
{
|
||
struct ui *ui = current_ui;
|
||
|
||
gdb_readline_wrapper_cleanup cleanup;
|
||
|
||
/* Display our prompt and prevent double prompt display. Don't pass
|
||
down a NULL prompt, since that has special meaning for
|
||
display_gdb_prompt -- it indicates a request to print the primary
|
||
prompt, while we want a secondary prompt here. */
|
||
display_gdb_prompt (prompt != NULL ? prompt : "");
|
||
if (ui->command_editing)
|
||
rl_already_prompted = 1;
|
||
|
||
if (after_char_processing_hook)
|
||
(*after_char_processing_hook) ();
|
||
gdb_assert (after_char_processing_hook == NULL);
|
||
|
||
while (gdb_do_one_event () >= 0)
|
||
if (gdb_readline_wrapper_done)
|
||
break;
|
||
|
||
return gdb_readline_wrapper_result;
|
||
}
|
||
|
||
|
||
/* The current saved history number from operate-and-get-next.
|
||
This is -1 if not valid. */
|
||
static int operate_saved_history = -1;
|
||
|
||
/* This is put on the appropriate hook and helps operate-and-get-next
|
||
do its work. */
|
||
static void
|
||
gdb_rl_operate_and_get_next_completion (void)
|
||
{
|
||
int delta = where_history () - operate_saved_history;
|
||
|
||
/* The `key' argument to rl_get_previous_history is ignored. */
|
||
rl_get_previous_history (delta, 0);
|
||
operate_saved_history = -1;
|
||
|
||
/* readline doesn't automatically update the display for us. */
|
||
rl_redisplay ();
|
||
|
||
after_char_processing_hook = NULL;
|
||
rl_pre_input_hook = NULL;
|
||
}
|
||
|
||
/* This is a gdb-local readline command handler. It accepts the
|
||
current command line (like RET does) and, if this command was taken
|
||
from the history, arranges for the next command in the history to
|
||
appear on the command line when the prompt returns.
|
||
We ignore the arguments. */
|
||
static int
|
||
gdb_rl_operate_and_get_next (int count, int key)
|
||
{
|
||
int where;
|
||
|
||
/* Use the async hook. */
|
||
after_char_processing_hook = gdb_rl_operate_and_get_next_completion;
|
||
|
||
/* Find the current line, and find the next line to use. */
|
||
where = where_history();
|
||
|
||
if ((history_is_stifled () && (history_length >= history_max_entries))
|
||
|| (where >= history_length - 1))
|
||
operate_saved_history = where;
|
||
else
|
||
operate_saved_history = where + 1;
|
||
|
||
return rl_newline (1, key);
|
||
}
|
||
|
||
/* Number of user commands executed during this session. */
|
||
|
||
static int command_count = 0;
|
||
|
||
/* Add the user command COMMAND to the input history list. */
|
||
|
||
void
|
||
gdb_add_history (const char *command)
|
||
{
|
||
command_count++;
|
||
|
||
if (history_remove_duplicates != 0)
|
||
{
|
||
int lookbehind;
|
||
int lookbehind_threshold;
|
||
|
||
/* The lookbehind threshold for finding a duplicate history entry is
|
||
bounded by command_count because we can't meaningfully delete
|
||
history entries that are already stored in the history file since
|
||
the history file is appended to. */
|
||
if (history_remove_duplicates == -1
|
||
|| history_remove_duplicates > command_count)
|
||
lookbehind_threshold = command_count;
|
||
else
|
||
lookbehind_threshold = history_remove_duplicates;
|
||
|
||
using_history ();
|
||
for (lookbehind = 0; lookbehind < lookbehind_threshold; lookbehind++)
|
||
{
|
||
HIST_ENTRY *temp = previous_history ();
|
||
|
||
if (temp == NULL)
|
||
break;
|
||
|
||
if (strcmp (temp->line, command) == 0)
|
||
{
|
||
HIST_ENTRY *prev = remove_history (where_history ());
|
||
command_count--;
|
||
free_history_entry (prev);
|
||
break;
|
||
}
|
||
}
|
||
using_history ();
|
||
}
|
||
|
||
add_history (command);
|
||
}
|
||
|
||
/* Safely append new history entries to the history file in a corruption-free
|
||
way using an intermediate local history file. */
|
||
|
||
static void
|
||
gdb_safe_append_history (void)
|
||
{
|
||
int ret, saved_errno;
|
||
|
||
std::string local_history_filename
|
||
= string_printf ("%s-gdb%ld~", history_filename, (long) getpid ());
|
||
|
||
ret = rename (history_filename, local_history_filename.c_str ());
|
||
saved_errno = errno;
|
||
if (ret < 0 && saved_errno != ENOENT)
|
||
{
|
||
warning (_("Could not rename %s to %s: %s"),
|
||
history_filename, local_history_filename.c_str (),
|
||
safe_strerror (saved_errno));
|
||
}
|
||
else
|
||
{
|
||
if (ret < 0)
|
||
{
|
||
/* If the rename failed with ENOENT then either the global history
|
||
file never existed in the first place or another GDB process is
|
||
currently appending to it (and has thus temporarily renamed it).
|
||
Since we can't distinguish between these two cases, we have to
|
||
conservatively assume the first case and therefore must write out
|
||
(not append) our known history to our local history file and try
|
||
to move it back anyway. Otherwise a global history file would
|
||
never get created! */
|
||
gdb_assert (saved_errno == ENOENT);
|
||
write_history (local_history_filename.c_str ());
|
||
}
|
||
else
|
||
{
|
||
append_history (command_count, local_history_filename.c_str ());
|
||
if (history_is_stifled ())
|
||
history_truncate_file (local_history_filename.c_str (),
|
||
history_max_entries);
|
||
}
|
||
|
||
ret = rename (local_history_filename.c_str (), history_filename);
|
||
saved_errno = errno;
|
||
if (ret < 0 && saved_errno != EEXIST)
|
||
warning (_("Could not rename %s to %s: %s"),
|
||
local_history_filename.c_str (), history_filename,
|
||
safe_strerror (saved_errno));
|
||
}
|
||
}
|
||
|
||
/* Read one line from the command input stream `instream' into a local
|
||
static buffer. The buffer is made bigger as necessary. Returns
|
||
the address of the start of the line.
|
||
|
||
NULL is returned for end of file.
|
||
|
||
This routine either uses fancy command line editing or simple input
|
||
as the user has requested. */
|
||
|
||
char *
|
||
command_line_input (const char *prompt_arg, const char *annotation_suffix)
|
||
{
|
||
static struct buffer cmd_line_buffer;
|
||
static int cmd_line_buffer_initialized;
|
||
struct ui *ui = current_ui;
|
||
const char *prompt = prompt_arg;
|
||
char *cmd;
|
||
int from_tty = ui->instream == ui->stdin_stream;
|
||
|
||
/* The annotation suffix must be non-NULL. */
|
||
if (annotation_suffix == NULL)
|
||
annotation_suffix = "";
|
||
|
||
if (from_tty && annotation_level > 1)
|
||
{
|
||
char *local_prompt;
|
||
|
||
local_prompt
|
||
= (char *) alloca ((prompt == NULL ? 0 : strlen (prompt))
|
||
+ strlen (annotation_suffix) + 40);
|
||
if (prompt == NULL)
|
||
local_prompt[0] = '\0';
|
||
else
|
||
strcpy (local_prompt, prompt);
|
||
strcat (local_prompt, "\n\032\032");
|
||
strcat (local_prompt, annotation_suffix);
|
||
strcat (local_prompt, "\n");
|
||
|
||
prompt = local_prompt;
|
||
}
|
||
|
||
if (!cmd_line_buffer_initialized)
|
||
{
|
||
buffer_init (&cmd_line_buffer);
|
||
cmd_line_buffer_initialized = 1;
|
||
}
|
||
|
||
/* Starting a new command line. */
|
||
cmd_line_buffer.used_size = 0;
|
||
|
||
#ifdef SIGTSTP
|
||
if (job_control)
|
||
signal (SIGTSTP, handle_sigtstp);
|
||
#endif
|
||
|
||
while (1)
|
||
{
|
||
gdb::unique_xmalloc_ptr<char> rl;
|
||
|
||
/* Make sure that all output has been output. Some machines may
|
||
let you get away with leaving out some of the gdb_flush, but
|
||
not all. */
|
||
wrap_here ("");
|
||
gdb_flush (gdb_stdout);
|
||
gdb_flush (gdb_stderr);
|
||
|
||
if (!source_file_name.empty ())
|
||
++source_line_number;
|
||
|
||
if (from_tty && annotation_level > 1)
|
||
{
|
||
puts_unfiltered ("\n\032\032pre-");
|
||
puts_unfiltered (annotation_suffix);
|
||
puts_unfiltered ("\n");
|
||
}
|
||
|
||
/* Don't use fancy stuff if not talking to stdin. */
|
||
if (deprecated_readline_hook
|
||
&& from_tty
|
||
&& input_interactive_p (current_ui))
|
||
{
|
||
rl.reset ((*deprecated_readline_hook) (prompt));
|
||
}
|
||
else if (command_editing_p
|
||
&& from_tty
|
||
&& input_interactive_p (current_ui))
|
||
{
|
||
rl.reset (gdb_readline_wrapper (prompt));
|
||
}
|
||
else
|
||
{
|
||
rl.reset (gdb_readline_no_editing (prompt));
|
||
}
|
||
|
||
cmd = handle_line_of_input (&cmd_line_buffer, rl.get (),
|
||
0, annotation_suffix);
|
||
if (cmd == (char *) EOF)
|
||
{
|
||
cmd = NULL;
|
||
break;
|
||
}
|
||
if (cmd != NULL)
|
||
break;
|
||
|
||
/* Got partial input. I.e., got a line that ends with a
|
||
continuation character (backslash). Suppress printing the
|
||
prompt again. */
|
||
prompt = NULL;
|
||
}
|
||
|
||
#ifdef SIGTSTP
|
||
if (job_control)
|
||
signal (SIGTSTP, SIG_DFL);
|
||
#endif
|
||
|
||
return cmd;
|
||
}
|
||
|
||
/* See top.h. */
|
||
void
|
||
print_gdb_version (struct ui_file *stream, bool interactive)
|
||
{
|
||
/* From GNU coding standards, first line is meant to be easy for a
|
||
program to parse, and is just canonical program name and version
|
||
number, which starts after last space. */
|
||
|
||
ui_file_style style;
|
||
if (interactive)
|
||
{
|
||
ui_file_style nstyle = { ui_file_style::MAGENTA, ui_file_style::NONE,
|
||
ui_file_style::BOLD };
|
||
style = nstyle;
|
||
}
|
||
fprintf_styled (stream, style, "GNU gdb %s%s\n", PKGVERSION, version);
|
||
|
||
/* Second line is a copyright notice. */
|
||
|
||
fprintf_filtered (stream,
|
||
"Copyright (C) 2019 Free Software Foundation, Inc.\n");
|
||
|
||
/* Following the copyright is a brief statement that the program is
|
||
free software, that users are free to copy and change it on
|
||
certain conditions, that it is covered by the GNU GPL, and that
|
||
there is no warranty. */
|
||
|
||
fprintf_filtered (stream, "\
|
||
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\
|
||
\nThis is free software: you are free to change and redistribute it.\n\
|
||
There is NO WARRANTY, to the extent permitted by law.");
|
||
|
||
if (!interactive)
|
||
return;
|
||
|
||
fprintf_filtered (stream, ("\nType \"show copying\" and "
|
||
"\"show warranty\" for details.\n"));
|
||
|
||
/* After the required info we print the configuration information. */
|
||
|
||
fprintf_filtered (stream, "This GDB was configured as \"");
|
||
if (strcmp (host_name, target_name) != 0)
|
||
{
|
||
fprintf_filtered (stream, "--host=%s --target=%s",
|
||
host_name, target_name);
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "%s", host_name);
|
||
}
|
||
fprintf_filtered (stream, "\".\n");
|
||
|
||
fprintf_filtered (stream, _("Type \"show configuration\" "
|
||
"for configuration details.\n"));
|
||
|
||
if (REPORT_BUGS_TO[0])
|
||
{
|
||
fprintf_filtered (stream,
|
||
_("For bug reporting instructions, please see:\n"));
|
||
fprintf_filtered (stream, "%s.\n", REPORT_BUGS_TO);
|
||
}
|
||
fprintf_filtered (stream,
|
||
_("Find the GDB manual and other documentation \
|
||
resources online at:\n <http://www.gnu.org/software/gdb/documentation/>."));
|
||
fprintf_filtered (stream, "\n\n");
|
||
fprintf_filtered (stream, _("For help, type \"help\".\n"));
|
||
fprintf_filtered (stream,
|
||
_("Type \"apropos word\" to search for commands \
|
||
related to \"word\"."));
|
||
}
|
||
|
||
/* Print the details of GDB build-time configuration. */
|
||
void
|
||
print_gdb_configuration (struct ui_file *stream)
|
||
{
|
||
fprintf_filtered (stream, _("\
|
||
This GDB was configured as follows:\n\
|
||
configure --host=%s --target=%s\n\
|
||
"), host_name, target_name);
|
||
fprintf_filtered (stream, _("\
|
||
--with-auto-load-dir=%s\n\
|
||
--with-auto-load-safe-path=%s\n\
|
||
"), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH);
|
||
#if HAVE_LIBEXPAT
|
||
fprintf_filtered (stream, _("\
|
||
--with-expat\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-expat\n\
|
||
"));
|
||
#endif
|
||
if (GDB_DATADIR[0])
|
||
fprintf_filtered (stream, _("\
|
||
--with-gdb-datadir=%s%s\n\
|
||
"), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : "");
|
||
#ifdef ICONV_BIN
|
||
fprintf_filtered (stream, _("\
|
||
--with-iconv-bin=%s%s\n\
|
||
"), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : "");
|
||
#endif
|
||
if (JIT_READER_DIR[0])
|
||
fprintf_filtered (stream, _("\
|
||
--with-jit-reader-dir=%s%s\n\
|
||
"), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : "");
|
||
#if HAVE_LIBUNWIND_IA64_H
|
||
fprintf_filtered (stream, _("\
|
||
--with-libunwind-ia64\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-libunwind-ia64\n\
|
||
"));
|
||
#endif
|
||
#if HAVE_LIBLZMA
|
||
fprintf_filtered (stream, _("\
|
||
--with-lzma\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-lzma\n\
|
||
"));
|
||
#endif
|
||
#if HAVE_LIBBABELTRACE
|
||
fprintf_filtered (stream, _("\
|
||
--with-babeltrace\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-babeltrace\n\
|
||
"));
|
||
#endif
|
||
#if HAVE_LIBIPT
|
||
fprintf_filtered (stream, _("\
|
||
--with-intel-pt\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-intel-pt\n\
|
||
"));
|
||
#endif
|
||
#if HAVE_LIBMCHECK
|
||
fprintf_filtered (stream, _("\
|
||
--enable-libmcheck\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--disable-libmcheck\n\
|
||
"));
|
||
#endif
|
||
#if HAVE_LIBMPFR
|
||
fprintf_filtered (stream, _("\
|
||
--with-mpfr\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-mpfr\n\
|
||
"));
|
||
#endif
|
||
#ifdef WITH_PYTHON_PATH
|
||
fprintf_filtered (stream, _("\
|
||
--with-python=%s%s\n\
|
||
"), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : "");
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-python\n\
|
||
"));
|
||
#endif
|
||
#if HAVE_GUILE
|
||
fprintf_filtered (stream, _("\
|
||
--with-guile\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--without-guile\n\
|
||
"));
|
||
#endif
|
||
#if HAVE_SOURCE_HIGHLIGHT
|
||
fprintf_filtered (stream, _("\
|
||
--enable-source-highlight\n\
|
||
"));
|
||
#else
|
||
fprintf_filtered (stream, _("\
|
||
--disable-source-highlight\n\
|
||
"));
|
||
#endif
|
||
#ifdef RELOC_SRCDIR
|
||
fprintf_filtered (stream, _("\
|
||
--with-relocated-sources=%s\n\
|
||
"), RELOC_SRCDIR);
|
||
#endif
|
||
if (DEBUGDIR[0])
|
||
fprintf_filtered (stream, _("\
|
||
--with-separate-debug-dir=%s%s\n\
|
||
"), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : "");
|
||
if (TARGET_SYSTEM_ROOT[0])
|
||
fprintf_filtered (stream, _("\
|
||
--with-sysroot=%s%s\n\
|
||
"), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : "");
|
||
if (SYSTEM_GDBINIT[0])
|
||
fprintf_filtered (stream, _("\
|
||
--with-system-gdbinit=%s%s\n\
|
||
"), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : "");
|
||
/* We assume "relocatable" will be printed at least once, thus we always
|
||
print this text. It's a reasonably safe assumption for now. */
|
||
fprintf_filtered (stream, _("\n\
|
||
(\"Relocatable\" means the directory can be moved with the GDB installation\n\
|
||
tree, and GDB will still find it.)\n\
|
||
"));
|
||
}
|
||
|
||
|
||
/* The current top level prompt, settable with "set prompt", and/or
|
||
with the python `gdb.prompt_hook' hook. */
|
||
static char *top_prompt;
|
||
|
||
/* Access method for the GDB prompt string. */
|
||
|
||
char *
|
||
get_prompt (void)
|
||
{
|
||
return top_prompt;
|
||
}
|
||
|
||
/* Set method for the GDB prompt string. */
|
||
|
||
void
|
||
set_prompt (const char *s)
|
||
{
|
||
char *p = xstrdup (s);
|
||
|
||
xfree (top_prompt);
|
||
top_prompt = p;
|
||
}
|
||
|
||
|
||
struct qt_args
|
||
{
|
||
int from_tty;
|
||
};
|
||
|
||
/* Callback for iterate_over_inferiors. Kills or detaches the given
|
||
inferior, depending on how we originally gained control of it. */
|
||
|
||
static int
|
||
kill_or_detach (struct inferior *inf, void *args)
|
||
{
|
||
struct qt_args *qt = (struct qt_args *) args;
|
||
|
||
if (inf->pid == 0)
|
||
return 0;
|
||
|
||
thread_info *thread = any_thread_of_inferior (inf);
|
||
if (thread != NULL)
|
||
{
|
||
switch_to_thread (thread);
|
||
|
||
/* Leave core files alone. */
|
||
if (target_has_execution)
|
||
{
|
||
if (inf->attach_flag)
|
||
target_detach (inf, qt->from_tty);
|
||
else
|
||
target_kill ();
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Callback for iterate_over_inferiors. Prints info about what GDB
|
||
will do to each inferior on a "quit". ARG points to a struct
|
||
ui_out where output is to be collected. */
|
||
|
||
static int
|
||
print_inferior_quit_action (struct inferior *inf, void *arg)
|
||
{
|
||
struct ui_file *stb = (struct ui_file *) arg;
|
||
|
||
if (inf->pid == 0)
|
||
return 0;
|
||
|
||
if (inf->attach_flag)
|
||
fprintf_filtered (stb,
|
||
_("\tInferior %d [%s] will be detached.\n"), inf->num,
|
||
target_pid_to_str (ptid_t (inf->pid)).c_str ());
|
||
else
|
||
fprintf_filtered (stb,
|
||
_("\tInferior %d [%s] will be killed.\n"), inf->num,
|
||
target_pid_to_str (ptid_t (inf->pid)).c_str ());
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* If necessary, make the user confirm that we should quit. Return
|
||
non-zero if we should quit, zero if we shouldn't. */
|
||
|
||
int
|
||
quit_confirm (void)
|
||
{
|
||
/* Don't even ask if we're only debugging a core file inferior. */
|
||
if (!have_live_inferiors ())
|
||
return 1;
|
||
|
||
/* Build the query string as a single string. */
|
||
string_file stb;
|
||
|
||
stb.puts (_("A debugging session is active.\n\n"));
|
||
iterate_over_inferiors (print_inferior_quit_action, &stb);
|
||
stb.puts (_("\nQuit anyway? "));
|
||
|
||
return query ("%s", stb.c_str ());
|
||
}
|
||
|
||
/* Prepare to exit GDB cleanly by undoing any changes made to the
|
||
terminal so that we leave the terminal in the state we acquired it. */
|
||
|
||
static void
|
||
undo_terminal_modifications_before_exit (void)
|
||
{
|
||
struct ui *saved_top_level = current_ui;
|
||
|
||
target_terminal::ours ();
|
||
|
||
current_ui = main_ui;
|
||
|
||
#if defined(TUI)
|
||
tui_disable ();
|
||
#endif
|
||
gdb_disable_readline ();
|
||
|
||
current_ui = saved_top_level;
|
||
}
|
||
|
||
|
||
/* Quit without asking for confirmation. */
|
||
|
||
void
|
||
quit_force (int *exit_arg, int from_tty)
|
||
{
|
||
int exit_code = 0;
|
||
struct qt_args qt;
|
||
|
||
undo_terminal_modifications_before_exit ();
|
||
|
||
/* An optional expression may be used to cause gdb to terminate with the
|
||
value of that expression. */
|
||
if (exit_arg)
|
||
exit_code = *exit_arg;
|
||
else if (return_child_result)
|
||
exit_code = return_child_result_value;
|
||
|
||
qt.from_tty = from_tty;
|
||
|
||
/* We want to handle any quit errors and exit regardless. */
|
||
|
||
/* Get out of tfind mode, and kill or detach all inferiors. */
|
||
try
|
||
{
|
||
disconnect_tracing ();
|
||
iterate_over_inferiors (kill_or_detach, &qt);
|
||
}
|
||
catch (const gdb_exception &ex)
|
||
{
|
||
exception_print (gdb_stderr, ex);
|
||
}
|
||
|
||
/* Give all pushed targets a chance to do minimal cleanup, and pop
|
||
them all out. */
|
||
try
|
||
{
|
||
pop_all_targets ();
|
||
}
|
||
catch (const gdb_exception &ex)
|
||
{
|
||
exception_print (gdb_stderr, ex);
|
||
}
|
||
|
||
/* Save the history information if it is appropriate to do so. */
|
||
try
|
||
{
|
||
if (write_history_p && history_filename)
|
||
{
|
||
struct ui *ui;
|
||
int save = 0;
|
||
|
||
/* History is currently shared between all UIs. If there's
|
||
any UI with a terminal, save history. */
|
||
ALL_UIS (ui)
|
||
{
|
||
if (input_interactive_p (ui))
|
||
{
|
||
save = 1;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (save)
|
||
gdb_safe_append_history ();
|
||
}
|
||
}
|
||
catch (const gdb_exception &ex)
|
||
{
|
||
exception_print (gdb_stderr, ex);
|
||
}
|
||
|
||
/* Destroy any values currently allocated now instead of leaving it
|
||
to global destructors, because that may be too late. For
|
||
example, the destructors of xmethod values call into the Python
|
||
runtime, which is finalized via a final cleanup. */
|
||
finalize_values ();
|
||
|
||
/* Do any final cleanups before exiting. */
|
||
try
|
||
{
|
||
do_final_cleanups ();
|
||
}
|
||
catch (const gdb_exception &ex)
|
||
{
|
||
exception_print (gdb_stderr, ex);
|
||
}
|
||
|
||
exit (exit_code);
|
||
}
|
||
|
||
/* The value of the "interactive-mode" setting. */
|
||
static enum auto_boolean interactive_mode = AUTO_BOOLEAN_AUTO;
|
||
|
||
/* Implement the "show interactive-mode" option. */
|
||
|
||
static void
|
||
show_interactive_mode (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
if (interactive_mode == AUTO_BOOLEAN_AUTO)
|
||
fprintf_filtered (file, "Debugger's interactive mode "
|
||
"is %s (currently %s).\n",
|
||
value, input_interactive_p (current_ui) ? "on" : "off");
|
||
else
|
||
fprintf_filtered (file, "Debugger's interactive mode is %s.\n", value);
|
||
}
|
||
|
||
/* Returns whether GDB is running on an interactive terminal. */
|
||
|
||
int
|
||
input_interactive_p (struct ui *ui)
|
||
{
|
||
if (batch_flag)
|
||
return 0;
|
||
|
||
if (interactive_mode != AUTO_BOOLEAN_AUTO)
|
||
return interactive_mode == AUTO_BOOLEAN_TRUE;
|
||
|
||
return ui->input_interactive_p;
|
||
}
|
||
|
||
static void
|
||
dont_repeat_command (const char *ignored, int from_tty)
|
||
{
|
||
/* Can't call dont_repeat here because we're not necessarily reading
|
||
from stdin. */
|
||
*saved_command_line = 0;
|
||
}
|
||
|
||
/* Functions to manipulate command line editing control variables. */
|
||
|
||
/* Number of commands to print in each call to show_commands. */
|
||
#define Hist_print 10
|
||
void
|
||
show_commands (const char *args, int from_tty)
|
||
{
|
||
/* Index for history commands. Relative to history_base. */
|
||
int offset;
|
||
|
||
/* Number of the history entry which we are planning to display next.
|
||
Relative to history_base. */
|
||
static int num = 0;
|
||
|
||
/* Print out some of the commands from the command history. */
|
||
|
||
if (args)
|
||
{
|
||
if (args[0] == '+' && args[1] == '\0')
|
||
/* "info editing +" should print from the stored position. */
|
||
;
|
||
else
|
||
/* "info editing <exp>" should print around command number <exp>. */
|
||
num = (parse_and_eval_long (args) - history_base) - Hist_print / 2;
|
||
}
|
||
/* "show commands" means print the last Hist_print commands. */
|
||
else
|
||
{
|
||
num = history_length - Hist_print;
|
||
}
|
||
|
||
if (num < 0)
|
||
num = 0;
|
||
|
||
/* If there are at least Hist_print commands, we want to display the last
|
||
Hist_print rather than, say, the last 6. */
|
||
if (history_length - num < Hist_print)
|
||
{
|
||
num = history_length - Hist_print;
|
||
if (num < 0)
|
||
num = 0;
|
||
}
|
||
|
||
for (offset = num;
|
||
offset < num + Hist_print && offset < history_length;
|
||
offset++)
|
||
{
|
||
printf_filtered ("%5d %s\n", history_base + offset,
|
||
(history_get (history_base + offset))->line);
|
||
}
|
||
|
||
/* The next command we want to display is the next one that we haven't
|
||
displayed yet. */
|
||
num += Hist_print;
|
||
|
||
/* If the user repeats this command with return, it should do what
|
||
"show commands +" does. This is unnecessary if arg is null,
|
||
because "show commands +" is not useful after "show commands". */
|
||
if (from_tty && args)
|
||
set_repeat_arguments ("+");
|
||
}
|
||
|
||
/* Update the size of our command history file to HISTORY_SIZE.
|
||
|
||
A HISTORY_SIZE of -1 stands for unlimited. */
|
||
|
||
static void
|
||
set_readline_history_size (int history_size)
|
||
{
|
||
gdb_assert (history_size >= -1);
|
||
|
||
if (history_size == -1)
|
||
unstifle_history ();
|
||
else
|
||
stifle_history (history_size);
|
||
}
|
||
|
||
/* Called by do_setshow_command. */
|
||
static void
|
||
set_history_size_command (const char *args,
|
||
int from_tty, struct cmd_list_element *c)
|
||
{
|
||
set_readline_history_size (history_size_setshow_var);
|
||
}
|
||
|
||
void
|
||
set_history (const char *args, int from_tty)
|
||
{
|
||
printf_unfiltered (_("\"set history\" must be followed "
|
||
"by the name of a history subcommand.\n"));
|
||
help_list (sethistlist, "set history ", all_commands, gdb_stdout);
|
||
}
|
||
|
||
void
|
||
show_history (const char *args, int from_tty)
|
||
{
|
||
cmd_show_list (showhistlist, from_tty, "");
|
||
}
|
||
|
||
int info_verbose = 0; /* Default verbose msgs off. */
|
||
|
||
/* Called by do_set_command. An elaborate joke. */
|
||
void
|
||
set_verbose (const char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
const char *cmdname = "verbose";
|
||
struct cmd_list_element *showcmd;
|
||
|
||
showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
|
||
gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS);
|
||
|
||
if (c->doc && c->doc_allocated)
|
||
xfree ((char *) c->doc);
|
||
if (showcmd->doc && showcmd->doc_allocated)
|
||
xfree ((char *) showcmd->doc);
|
||
if (info_verbose)
|
||
{
|
||
c->doc = _("Set verbose printing of informational messages.");
|
||
showcmd->doc = _("Show verbose printing of informational messages.");
|
||
}
|
||
else
|
||
{
|
||
c->doc = _("Set verbosity.");
|
||
showcmd->doc = _("Show verbosity.");
|
||
}
|
||
c->doc_allocated = 0;
|
||
showcmd->doc_allocated = 0;
|
||
}
|
||
|
||
/* Init the history buffer. Note that we are called after the init file(s)
|
||
have been read so that the user can change the history file via his
|
||
.gdbinit file (for instance). The GDBHISTFILE environment variable
|
||
overrides all of this. */
|
||
|
||
void
|
||
init_history (void)
|
||
{
|
||
const char *tmpenv;
|
||
|
||
tmpenv = getenv ("GDBHISTSIZE");
|
||
if (tmpenv)
|
||
{
|
||
long var;
|
||
int saved_errno;
|
||
char *endptr;
|
||
|
||
tmpenv = skip_spaces (tmpenv);
|
||
errno = 0;
|
||
var = strtol (tmpenv, &endptr, 10);
|
||
saved_errno = errno;
|
||
endptr = skip_spaces (endptr);
|
||
|
||
/* If GDBHISTSIZE is non-numeric then ignore it. If GDBHISTSIZE is the
|
||
empty string, a negative number or a huge positive number (larger than
|
||
INT_MAX) then set the history size to unlimited. Otherwise set our
|
||
history size to the number we have read. This behavior is consistent
|
||
with how bash handles HISTSIZE. */
|
||
if (*endptr != '\0')
|
||
;
|
||
else if (*tmpenv == '\0'
|
||
|| var < 0
|
||
|| var > INT_MAX
|
||
/* On targets where INT_MAX == LONG_MAX, we have to look at
|
||
errno after calling strtol to distinguish between a value that
|
||
is exactly INT_MAX and an overflowing value that was clamped
|
||
to INT_MAX. */
|
||
|| (var == INT_MAX && saved_errno == ERANGE))
|
||
history_size_setshow_var = -1;
|
||
else
|
||
history_size_setshow_var = var;
|
||
}
|
||
|
||
/* If neither the init file nor GDBHISTSIZE has set a size yet, pick the
|
||
default. */
|
||
if (history_size_setshow_var == -2)
|
||
history_size_setshow_var = 256;
|
||
|
||
set_readline_history_size (history_size_setshow_var);
|
||
|
||
tmpenv = getenv ("GDBHISTFILE");
|
||
if (tmpenv)
|
||
history_filename = xstrdup (tmpenv);
|
||
else if (!history_filename)
|
||
{
|
||
/* We include the current directory so that if the user changes
|
||
directories the file written will be the same as the one
|
||
that was read. */
|
||
#ifdef __MSDOS__
|
||
/* No leading dots in file names are allowed on MSDOS. */
|
||
history_filename = concat (current_directory, "/_gdb_history",
|
||
(char *)NULL);
|
||
#else
|
||
history_filename = concat (current_directory, "/.gdb_history",
|
||
(char *)NULL);
|
||
#endif
|
||
}
|
||
read_history (history_filename);
|
||
}
|
||
|
||
static void
|
||
show_prompt (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value);
|
||
}
|
||
|
||
/* "set editing" command. */
|
||
|
||
static void
|
||
set_editing (const char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
change_line_handler (set_editing_cmd_var);
|
||
/* Update the control variable so that MI's =cmd-param-changed event
|
||
shows the correct value. */
|
||
set_editing_cmd_var = current_ui->command_editing;
|
||
}
|
||
|
||
static void
|
||
show_editing (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Editing of command lines as "
|
||
"they are typed is %s.\n"),
|
||
current_ui->command_editing ? _("on") : _("off"));
|
||
}
|
||
|
||
static void
|
||
show_annotation_level (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Annotation_level is %s.\n"), value);
|
||
}
|
||
|
||
static void
|
||
show_exec_done_display_p (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("Notification of completion for "
|
||
"asynchronous execution commands is %s.\n"),
|
||
value);
|
||
}
|
||
|
||
/* New values of the "data-directory" parameter are staged here. */
|
||
static char *staged_gdb_datadir;
|
||
|
||
/* "set" command for the gdb_datadir configuration variable. */
|
||
|
||
static void
|
||
set_gdb_datadir (const char *args, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
set_gdb_data_directory (staged_gdb_datadir);
|
||
gdb::observers::gdb_datadir_changed.notify ();
|
||
}
|
||
|
||
/* "show" command for the gdb_datadir configuration variable. */
|
||
|
||
static void
|
||
show_gdb_datadir (struct ui_file *file, int from_tty,
|
||
struct cmd_list_element *c, const char *value)
|
||
{
|
||
fprintf_filtered (file, _("GDB's data directory is \"%s\".\n"),
|
||
gdb_datadir);
|
||
}
|
||
|
||
static void
|
||
set_history_filename (const char *args,
|
||
int from_tty, struct cmd_list_element *c)
|
||
{
|
||
/* We include the current directory so that if the user changes
|
||
directories the file written will be the same as the one
|
||
that was read. */
|
||
if (!IS_ABSOLUTE_PATH (history_filename))
|
||
history_filename = reconcat (history_filename, current_directory, "/",
|
||
history_filename, (char *) NULL);
|
||
}
|
||
|
||
static void
|
||
init_gdb_version_vars (void)
|
||
{
|
||
struct internalvar *major_version_var = create_internalvar ("_gdb_major");
|
||
struct internalvar *minor_version_var = create_internalvar ("_gdb_minor");
|
||
int vmajor = 0, vminor = 0, vrevision = 0;
|
||
sscanf (version, "%d.%d.%d", &vmajor, &vminor, &vrevision);
|
||
set_internalvar_integer (major_version_var, vmajor);
|
||
set_internalvar_integer (minor_version_var, vminor + (vrevision > 0));
|
||
}
|
||
|
||
static void
|
||
init_main (void)
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
/* Initialize the prompt to a simple "(gdb) " prompt or to whatever
|
||
the DEFAULT_PROMPT is. */
|
||
set_prompt (DEFAULT_PROMPT);
|
||
|
||
/* Set the important stuff up for command editing. */
|
||
command_editing_p = 1;
|
||
history_expansion_p = 0;
|
||
write_history_p = 0;
|
||
|
||
/* Setup important stuff for command line editing. */
|
||
rl_completion_word_break_hook = gdb_completion_word_break_characters;
|
||
rl_attempted_completion_function = gdb_rl_attempted_completion_function;
|
||
set_rl_completer_word_break_characters (default_word_break_characters ());
|
||
rl_completer_quote_characters = get_gdb_completer_quote_characters ();
|
||
rl_completion_display_matches_hook = cli_display_match_list;
|
||
rl_readline_name = "gdb";
|
||
rl_terminal_name = getenv ("TERM");
|
||
|
||
/* The name for this defun comes from Bash, where it originated.
|
||
15 is Control-o, the same binding this function has in Bash. */
|
||
rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15);
|
||
|
||
add_setshow_string_cmd ("prompt", class_support,
|
||
&top_prompt,
|
||
_("Set gdb's prompt"),
|
||
_("Show gdb's prompt"),
|
||
NULL, NULL,
|
||
show_prompt,
|
||
&setlist, &showlist);
|
||
|
||
add_com ("dont-repeat", class_support, dont_repeat_command, _("\
|
||
Don't repeat this command.\nPrimarily \
|
||
used inside of user-defined commands that should not be repeated when\n\
|
||
hitting return."));
|
||
|
||
add_setshow_boolean_cmd ("editing", class_support,
|
||
&set_editing_cmd_var, _("\
|
||
Set editing of command lines as they are typed."), _("\
|
||
Show editing of command lines as they are typed."), _("\
|
||
Use \"on\" to enable the editing, and \"off\" to disable it.\n\
|
||
Without an argument, command line editing is enabled. To edit, use\n\
|
||
EMACS-like or VI-like commands like control-P or ESC."),
|
||
set_editing,
|
||
show_editing,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\
|
||
Set saving of the history record on exit."), _("\
|
||
Show saving of the history record on exit."), _("\
|
||
Use \"on\" to enable the saving, and \"off\" to disable it.\n\
|
||
Without an argument, saving is enabled."),
|
||
NULL,
|
||
show_write_history_p,
|
||
&sethistlist, &showhistlist);
|
||
|
||
add_setshow_zuinteger_unlimited_cmd ("size", no_class,
|
||
&history_size_setshow_var, _("\
|
||
Set the size of the command history,"), _("\
|
||
Show the size of the command history,"), _("\
|
||
ie. the number of previous commands to keep a record of.\n\
|
||
If set to \"unlimited\", the number of commands kept in the history\n\
|
||
list is unlimited. This defaults to the value of the environment\n\
|
||
variable \"GDBHISTSIZE\", or to 256 if this variable is not set."),
|
||
set_history_size_command,
|
||
show_history_size,
|
||
&sethistlist, &showhistlist);
|
||
|
||
add_setshow_zuinteger_unlimited_cmd ("remove-duplicates", no_class,
|
||
&history_remove_duplicates, _("\
|
||
Set how far back in history to look for and remove duplicate entries."), _("\
|
||
Show how far back in history to look for and remove duplicate entries."), _("\
|
||
If set to a nonzero value N, GDB will look back at the last N history entries\n\
|
||
and remove the first history entry that is a duplicate of the most recent\n\
|
||
entry, each time a new history entry is added.\n\
|
||
If set to \"unlimited\", this lookbehind is unbounded.\n\
|
||
Only history entries added during this session are considered for removal.\n\
|
||
If set to 0, removal of duplicate history entries is disabled.\n\
|
||
By default this option is set to 0."),
|
||
NULL,
|
||
show_history_remove_duplicates,
|
||
&sethistlist, &showhistlist);
|
||
|
||
add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\
|
||
Set the filename in which to record the command history"), _("\
|
||
Show the filename in which to record the command history"), _("\
|
||
(the list of previous commands of which a record is kept)."),
|
||
set_history_filename,
|
||
show_history_filename,
|
||
&sethistlist, &showhistlist);
|
||
|
||
add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\
|
||
Set whether to confirm potentially dangerous operations."), _("\
|
||
Show whether to confirm potentially dangerous operations."), NULL,
|
||
NULL,
|
||
show_confirm,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\
|
||
Set annotation_level."), _("\
|
||
Show annotation_level."), _("\
|
||
0 == normal; 1 == fullname (for use when running under emacs)\n\
|
||
2 == output annotated suitably for use by programs that control GDB."),
|
||
NULL,
|
||
show_annotation_level,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_boolean_cmd ("exec-done-display", class_support,
|
||
&exec_done_display_p, _("\
|
||
Set notification of completion for asynchronous execution commands."), _("\
|
||
Show notification of completion for asynchronous execution commands."), _("\
|
||
Use \"on\" to enable the notification, and \"off\" to disable it."),
|
||
NULL,
|
||
show_exec_done_display_p,
|
||
&setlist, &showlist);
|
||
|
||
add_setshow_filename_cmd ("data-directory", class_maintenance,
|
||
&staged_gdb_datadir, _("Set GDB's data directory."),
|
||
_("Show GDB's data directory."),
|
||
_("\
|
||
When set, GDB uses the specified path to search for data files."),
|
||
set_gdb_datadir, show_gdb_datadir,
|
||
&setlist,
|
||
&showlist);
|
||
|
||
add_setshow_auto_boolean_cmd ("interactive-mode", class_support,
|
||
&interactive_mode, _("\
|
||
Set whether GDB's standard input is a terminal."), _("\
|
||
Show whether GDB's standard input is a terminal."), _("\
|
||
If on, GDB assumes that standard input is a terminal. In practice, it\n\
|
||
means that GDB should wait for the user to answer queries associated to\n\
|
||
commands entered at the command prompt. If off, GDB assumes that standard\n\
|
||
input is not a terminal, and uses the default answer to all queries.\n\
|
||
If auto (the default), determine which mode to use based on the standard\n\
|
||
input settings."),
|
||
NULL,
|
||
show_interactive_mode,
|
||
&setlist, &showlist);
|
||
|
||
c = add_cmd ("new-ui", class_support, new_ui_command, _("\
|
||
Create a new UI. It takes two arguments:\n\
|
||
The first argument is the name of the interpreter to run.\n\
|
||
The second argument is the terminal the UI runs on."), &cmdlist);
|
||
set_cmd_completer (c, interpreter_completer);
|
||
}
|
||
|
||
void
|
||
gdb_init (char *argv0)
|
||
{
|
||
saved_command_line = xstrdup ("");
|
||
previous_saved_command_line = xstrdup ("");
|
||
|
||
if (pre_init_ui_hook)
|
||
pre_init_ui_hook ();
|
||
|
||
/* Run the init function of each source file. */
|
||
|
||
#ifdef __MSDOS__
|
||
/* Make sure we return to the original directory upon exit, come
|
||
what may, since the OS doesn't do that for us. */
|
||
make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory));
|
||
#endif
|
||
|
||
init_cmd_lists (); /* This needs to be done first. */
|
||
initialize_targets (); /* Setup target_terminal macros for utils.c. */
|
||
initialize_utils (); /* Make errors and warnings possible. */
|
||
|
||
init_page_info ();
|
||
|
||
/* Here is where we call all the _initialize_foo routines. */
|
||
initialize_all_files ();
|
||
|
||
/* This creates the current_program_space. Do this after all the
|
||
_initialize_foo routines have had a chance to install their
|
||
per-sspace data keys. Also do this before
|
||
initialize_current_architecture is called, because it accesses
|
||
exec_bfd of the current program space. */
|
||
initialize_progspace ();
|
||
initialize_inferiors ();
|
||
initialize_current_architecture ();
|
||
init_cli_cmds();
|
||
init_main (); /* But that omits this file! Do it now. */
|
||
|
||
initialize_stdin_serial ();
|
||
|
||
/* Take a snapshot of our tty state before readline/ncurses have had a chance
|
||
to alter it. */
|
||
set_initial_gdb_ttystate ();
|
||
|
||
async_init_signals ();
|
||
|
||
/* We need a default language for parsing expressions, so simple
|
||
things like "set width 0" won't fail if no language is explicitly
|
||
set in a config file or implicitly set by reading an executable
|
||
during startup. */
|
||
set_language (language_c);
|
||
expected_language = current_language; /* Don't warn about the change. */
|
||
|
||
/* Python initialization, for example, can require various commands to be
|
||
installed. For example "info pretty-printer" needs the "info"
|
||
prefix to be installed. Keep things simple and just do final
|
||
script initialization here. */
|
||
finish_ext_lang_initialization ();
|
||
|
||
/* Create $_gdb_major and $_gdb_minor convenience variables. */
|
||
init_gdb_version_vars ();
|
||
}
|