3182 lines
89 KiB
C
3182 lines
89 KiB
C
/* Memory-access and commands for "inferior" process, for GDB.
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Copyright (C) 1986-2012 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "arch-utils.h"
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#include <signal.h>
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#include "gdb_string.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "frame.h"
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#include "inferior.h"
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#include "environ.h"
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#include "value.h"
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#include "gdbcmd.h"
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#include "symfile.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "language.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "completer.h"
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#include "ui-out.h"
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#include "event-top.h"
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#include "parser-defs.h"
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#include "regcache.h"
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#include "reggroups.h"
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#include "block.h"
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#include "solib.h"
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#include <ctype.h>
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#include "gdb_assert.h"
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#include "observer.h"
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#include "target-descriptions.h"
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#include "user-regs.h"
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#include "exceptions.h"
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#include "cli/cli-decode.h"
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#include "gdbthread.h"
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#include "valprint.h"
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#include "inline-frame.h"
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#include "tracepoint.h"
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#include "inf-loop.h"
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#include "continuations.h"
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#include "linespec.h"
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/* Functions exported for general use, in inferior.h: */
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void all_registers_info (char *, int);
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void registers_info (char *, int);
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void nexti_command (char *, int);
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void stepi_command (char *, int);
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void continue_command (char *, int);
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void interrupt_target_command (char *args, int from_tty);
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/* Local functions: */
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static void nofp_registers_info (char *, int);
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static void print_return_value (struct value *function,
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struct type *value_type);
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static void until_next_command (int);
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static void until_command (char *, int);
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static void path_info (char *, int);
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static void path_command (char *, int);
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static void unset_command (char *, int);
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static void float_info (char *, int);
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static void disconnect_command (char *, int);
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static void unset_environment_command (char *, int);
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static void set_environment_command (char *, int);
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static void environment_info (char *, int);
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static void program_info (char *, int);
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static void finish_command (char *, int);
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static void signal_command (char *, int);
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static void jump_command (char *, int);
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static void step_1 (int, int, char *);
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static void step_once (int skip_subroutines, int single_inst,
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int count, int thread);
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static void next_command (char *, int);
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static void step_command (char *, int);
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static void run_command (char *, int);
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static void run_no_args_command (char *args, int from_tty);
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static void go_command (char *line_no, int from_tty);
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static int strip_bg_char (char **);
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void _initialize_infcmd (void);
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#define ERROR_NO_INFERIOR \
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if (!target_has_execution) error (_("The program is not being run."));
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/* Scratch area where string containing arguments to give to the
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program will be stored by 'set args'. As soon as anything is
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stored, notice_args_set will move it into per-inferior storage.
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Arguments are separated by spaces. Empty string (pointer to '\0')
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means no args. */
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static char *inferior_args_scratch;
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/* Scratch area where 'set inferior-tty' will store user-provided value.
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We'll immediate copy it into per-inferior storage. */
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static char *inferior_io_terminal_scratch;
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/* Pid of our debugged inferior, or 0 if no inferior now.
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Since various parts of infrun.c test this to see whether there is a program
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being debugged it should be nonzero (currently 3 is used) for remote
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debugging. */
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ptid_t inferior_ptid;
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/* Address at which inferior stopped. */
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CORE_ADDR stop_pc;
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/* Flag indicating that a command has proceeded the inferior past the
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current breakpoint. */
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int breakpoint_proceeded;
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/* Nonzero if stopped due to completion of a stack dummy routine. */
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enum stop_stack_kind stop_stack_dummy;
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/* Nonzero if stopped due to a random (unexpected) signal in inferior
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process. */
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int stopped_by_random_signal;
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/* Accessor routines. */
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/* Set the io terminal for the current inferior. Ownership of
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TERMINAL_NAME is not transferred. */
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void
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set_inferior_io_terminal (const char *terminal_name)
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{
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xfree (current_inferior ()->terminal);
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current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0;
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}
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const char *
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get_inferior_io_terminal (void)
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{
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return current_inferior ()->terminal;
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}
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static void
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set_inferior_tty_command (char *args, int from_tty,
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struct cmd_list_element *c)
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{
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/* CLI has assigned the user-provided value to inferior_io_terminal_scratch.
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Now route it to current inferior. */
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set_inferior_io_terminal (inferior_io_terminal_scratch);
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}
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static void
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show_inferior_tty_command (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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/* Note that we ignore the passed-in value in favor of computing it
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directly. */
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const char *inferior_io_terminal = get_inferior_io_terminal ();
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if (inferior_io_terminal == NULL)
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inferior_io_terminal = "";
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fprintf_filtered (gdb_stdout,
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_("Terminal for future runs of program being debugged "
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"is \"%s\".\n"), inferior_io_terminal);
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}
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char *
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get_inferior_args (void)
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{
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if (current_inferior ()->argc != 0)
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{
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char *n;
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n = construct_inferior_arguments (current_inferior ()->argc,
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current_inferior ()->argv);
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set_inferior_args (n);
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xfree (n);
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}
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if (current_inferior ()->args == NULL)
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current_inferior ()->args = xstrdup ("");
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return current_inferior ()->args;
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}
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/* Set the arguments for the current inferior. Ownership of
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NEWARGS is not transferred. */
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void
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set_inferior_args (char *newargs)
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{
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xfree (current_inferior ()->args);
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current_inferior ()->args = newargs ? xstrdup (newargs) : NULL;
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current_inferior ()->argc = 0;
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current_inferior ()->argv = 0;
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}
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void
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set_inferior_args_vector (int argc, char **argv)
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{
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current_inferior ()->argc = argc;
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current_inferior ()->argv = argv;
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}
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/* Notice when `set args' is run. */
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static void
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set_args_command (char *args, int from_tty, struct cmd_list_element *c)
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{
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/* CLI has assigned the user-provided value to inferior_args_scratch.
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Now route it to current inferior. */
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set_inferior_args (inferior_args_scratch);
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}
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/* Notice when `show args' is run. */
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static void
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show_args_command (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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/* Note that we ignore the passed-in value in favor of computing it
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directly. */
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deprecated_show_value_hack (file, from_tty, c, get_inferior_args ());
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}
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/* Compute command-line string given argument vector. This does the
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same shell processing as fork_inferior. */
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char *
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construct_inferior_arguments (int argc, char **argv)
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{
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char *result;
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if (STARTUP_WITH_SHELL)
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{
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#ifdef __MINGW32__
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/* This holds all the characters considered special to the
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Windows shells. */
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char *special = "\"!&*|[]{}<>?`~^=;, \t\n";
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const char quote = '"';
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#else
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/* This holds all the characters considered special to the
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typical Unix shells. We include `^' because the SunOS
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/bin/sh treats it as a synonym for `|'. */
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char *special = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
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const char quote = '\'';
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#endif
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int i;
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int length = 0;
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char *out, *cp;
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/* We over-compute the size. It shouldn't matter. */
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for (i = 0; i < argc; ++i)
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length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
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result = (char *) xmalloc (length);
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out = result;
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for (i = 0; i < argc; ++i)
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{
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if (i > 0)
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*out++ = ' ';
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/* Need to handle empty arguments specially. */
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if (argv[i][0] == '\0')
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{
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*out++ = quote;
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*out++ = quote;
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}
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else
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{
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#ifdef __MINGW32__
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int quoted = 0;
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if (strpbrk (argv[i], special))
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{
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quoted = 1;
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*out++ = quote;
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}
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#endif
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for (cp = argv[i]; *cp; ++cp)
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{
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if (*cp == '\n')
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{
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/* A newline cannot be quoted with a backslash (it
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just disappears), only by putting it inside
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quotes. */
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*out++ = quote;
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*out++ = '\n';
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*out++ = quote;
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}
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else
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{
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#ifdef __MINGW32__
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if (*cp == quote)
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#else
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if (strchr (special, *cp) != NULL)
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#endif
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*out++ = '\\';
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*out++ = *cp;
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}
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}
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#ifdef __MINGW32__
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if (quoted)
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*out++ = quote;
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#endif
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}
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}
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*out = '\0';
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}
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else
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{
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/* In this case we can't handle arguments that contain spaces,
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tabs, or newlines -- see breakup_args(). */
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int i;
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int length = 0;
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for (i = 0; i < argc; ++i)
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{
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char *cp = strchr (argv[i], ' ');
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if (cp == NULL)
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cp = strchr (argv[i], '\t');
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if (cp == NULL)
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cp = strchr (argv[i], '\n');
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if (cp != NULL)
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error (_("can't handle command-line "
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"argument containing whitespace"));
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length += strlen (argv[i]) + 1;
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}
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result = (char *) xmalloc (length);
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result[0] = '\0';
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for (i = 0; i < argc; ++i)
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{
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if (i > 0)
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strcat (result, " ");
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strcat (result, argv[i]);
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}
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}
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return result;
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}
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/* This function detects whether or not a '&' character (indicating
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background execution) has been added as *the last* of the arguments ARGS
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of a command. If it has, it removes it and returns 1. Otherwise it
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does nothing and returns 0. */
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static int
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strip_bg_char (char **args)
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{
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char *p = NULL;
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p = strchr (*args, '&');
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if (p)
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{
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if (p == (*args + strlen (*args) - 1))
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{
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if (strlen (*args) > 1)
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{
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do
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p--;
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while (*p == ' ' || *p == '\t');
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*(p + 1) = '\0';
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}
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else
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*args = 0;
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return 1;
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}
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}
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return 0;
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}
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/* Common actions to take after creating any sort of inferior, by any
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means (running, attaching, connecting, et cetera). The target
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should be stopped. */
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void
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post_create_inferior (struct target_ops *target, int from_tty)
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{
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volatile struct gdb_exception ex;
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/* Be sure we own the terminal in case write operations are performed. */
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target_terminal_ours ();
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/* If the target hasn't taken care of this already, do it now.
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Targets which need to access registers during to_open,
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to_create_inferior, or to_attach should do it earlier; but many
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don't need to. */
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target_find_description ();
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/* Now that we know the register layout, retrieve current PC. But
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if the PC is unavailable (e.g., we're opening a core file with
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missing registers info), ignore it. */
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stop_pc = 0;
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TRY_CATCH (ex, RETURN_MASK_ERROR)
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{
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stop_pc = regcache_read_pc (get_current_regcache ());
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}
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if (ex.reason < 0 && ex.error != NOT_AVAILABLE_ERROR)
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throw_exception (ex);
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if (exec_bfd)
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{
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const unsigned solib_add_generation
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= current_program_space->solib_add_generation;
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/* Create the hooks to handle shared library load and unload
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events. */
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#ifdef SOLIB_CREATE_INFERIOR_HOOK
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SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid));
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#else
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solib_create_inferior_hook (from_tty);
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#endif
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if (current_program_space->solib_add_generation == solib_add_generation)
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{
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/* The platform-specific hook should load initial shared libraries,
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but didn't. FROM_TTY will be incorrectly 0 but such solib
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targets should be fixed anyway. Call it only after the solib
|
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target has been initialized by solib_create_inferior_hook. */
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if (info_verbose)
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warning (_("platform-specific solib_create_inferior_hook did "
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"not load initial shared libraries."));
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/* If the solist is global across processes, there's no need to
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refetch it here. */
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if (!gdbarch_has_global_solist (target_gdbarch))
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{
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#ifdef SOLIB_ADD
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SOLIB_ADD (NULL, 0, target, auto_solib_add);
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#else
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solib_add (NULL, 0, target, auto_solib_add);
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#endif
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}
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||
}
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||
}
|
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||
/* If the user sets watchpoints before execution having started,
|
||
then she gets software watchpoints, because GDB can't know which
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target will end up being pushed, or if it supports hardware
|
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watchpoints or not. breakpoint_re_set takes care of promoting
|
||
watchpoints to hardware watchpoints if possible, however, if this
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new inferior doesn't load shared libraries or we don't pull in
|
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symbols from any other source on this target/arch,
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breakpoint_re_set is never called. Call it now so that software
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watchpoints get a chance to be promoted to hardware watchpoints
|
||
if the now pushed target supports hardware watchpoints. */
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||
breakpoint_re_set ();
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||
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observer_notify_inferior_created (target, from_tty);
|
||
}
|
||
|
||
/* Kill the inferior if already running. This function is designed
|
||
to be called when we are about to start the execution of the program
|
||
from the beginning. Ask the user to confirm that he wants to restart
|
||
the program being debugged when FROM_TTY is non-null. */
|
||
|
||
static void
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||
kill_if_already_running (int from_tty)
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||
{
|
||
if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution)
|
||
{
|
||
/* Bail out before killing the program if we will not be able to
|
||
restart it. */
|
||
target_require_runnable ();
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||
|
||
if (from_tty
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||
&& !query (_("The program being debugged has been started already.\n\
|
||
Start it from the beginning? ")))
|
||
error (_("Program not restarted."));
|
||
target_kill ();
|
||
}
|
||
}
|
||
|
||
/* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert
|
||
a temporary breakpoint at the begining of the main program before
|
||
running the program. */
|
||
|
||
static void
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||
run_command_1 (char *args, int from_tty, int tbreak_at_main)
|
||
{
|
||
char *exec_file;
|
||
struct cleanup *old_chain;
|
||
ptid_t ptid;
|
||
struct ui_out *uiout = current_uiout;
|
||
|
||
dont_repeat ();
|
||
|
||
kill_if_already_running (from_tty);
|
||
|
||
init_wait_for_inferior ();
|
||
clear_breakpoint_hit_counts ();
|
||
|
||
/* Clean up any leftovers from other runs. Some other things from
|
||
this function should probably be moved into target_pre_inferior. */
|
||
target_pre_inferior (from_tty);
|
||
|
||
/* The comment here used to read, "The exec file is re-read every
|
||
time we do a generic_mourn_inferior, so we just have to worry
|
||
about the symbol file." The `generic_mourn_inferior' function
|
||
gets called whenever the program exits. However, suppose the
|
||
program exits, and *then* the executable file changes? We need
|
||
to check again here. Since reopen_exec_file doesn't do anything
|
||
if the timestamp hasn't changed, I don't see the harm. */
|
||
reopen_exec_file ();
|
||
reread_symbols ();
|
||
|
||
/* Insert the temporary breakpoint if a location was specified. */
|
||
if (tbreak_at_main)
|
||
tbreak_command (main_name (), 0);
|
||
|
||
exec_file = (char *) get_exec_file (0);
|
||
|
||
if (non_stop && !target_supports_non_stop ())
|
||
error (_("The target does not support running in non-stop mode."));
|
||
|
||
/* We keep symbols from add-symbol-file, on the grounds that the
|
||
user might want to add some symbols before running the program
|
||
(right?). But sometimes (dynamic loading where the user manually
|
||
introduces the new symbols with add-symbol-file), the code which
|
||
the symbols describe does not persist between runs. Currently
|
||
the user has to manually nuke all symbols between runs if they
|
||
want them to go away (PR 2207). This is probably reasonable. */
|
||
|
||
if (!args)
|
||
{
|
||
if (target_can_async_p ())
|
||
async_disable_stdin ();
|
||
}
|
||
else
|
||
{
|
||
int async_exec = strip_bg_char (&args);
|
||
|
||
/* If we get a request for running in the bg but the target
|
||
doesn't support it, error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
/* If we don't get a request of running in the bg, then we need
|
||
to simulate synchronous (fg) execution. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
/* If there were other args, beside '&', process them. */
|
||
if (args)
|
||
set_inferior_args (args);
|
||
}
|
||
|
||
if (from_tty)
|
||
{
|
||
ui_out_field_string (uiout, NULL, "Starting program");
|
||
ui_out_text (uiout, ": ");
|
||
if (exec_file)
|
||
ui_out_field_string (uiout, "execfile", exec_file);
|
||
ui_out_spaces (uiout, 1);
|
||
/* We call get_inferior_args() because we might need to compute
|
||
the value now. */
|
||
ui_out_field_string (uiout, "infargs", get_inferior_args ());
|
||
ui_out_text (uiout, "\n");
|
||
ui_out_flush (uiout);
|
||
}
|
||
|
||
/* We call get_inferior_args() because we might need to compute
|
||
the value now. */
|
||
target_create_inferior (exec_file, get_inferior_args (),
|
||
environ_vector (current_inferior ()->environment),
|
||
from_tty);
|
||
|
||
/* We're starting off a new process. When we get out of here, in
|
||
non-stop mode, finish the state of all threads of that process,
|
||
but leave other threads alone, as they may be stopped in internal
|
||
events --- the frontend shouldn't see them as stopped. In
|
||
all-stop, always finish the state of all threads, as we may be
|
||
resuming more than just the new process. */
|
||
if (non_stop)
|
||
ptid = pid_to_ptid (ptid_get_pid (inferior_ptid));
|
||
else
|
||
ptid = minus_one_ptid;
|
||
old_chain = make_cleanup (finish_thread_state_cleanup, &ptid);
|
||
|
||
/* Pass zero for FROM_TTY, because at this point the "run" command
|
||
has done its thing; now we are setting up the running program. */
|
||
post_create_inferior (¤t_target, 0);
|
||
|
||
/* Start the target running. Do not use -1 continuation as it would skip
|
||
breakpoint right at the entry point. */
|
||
proceed (regcache_read_pc (get_current_regcache ()), GDB_SIGNAL_0, 0);
|
||
|
||
/* Since there was no error, there's no need to finish the thread
|
||
states here. */
|
||
discard_cleanups (old_chain);
|
||
}
|
||
|
||
static void
|
||
run_command (char *args, int from_tty)
|
||
{
|
||
run_command_1 (args, from_tty, 0);
|
||
}
|
||
|
||
static void
|
||
run_no_args_command (char *args, int from_tty)
|
||
{
|
||
set_inferior_args ("");
|
||
}
|
||
|
||
|
||
/* Start the execution of the program up until the beginning of the main
|
||
program. */
|
||
|
||
static void
|
||
start_command (char *args, int from_tty)
|
||
{
|
||
/* Some languages such as Ada need to search inside the program
|
||
minimal symbols for the location where to put the temporary
|
||
breakpoint before starting. */
|
||
if (!have_minimal_symbols ())
|
||
error (_("No symbol table loaded. Use the \"file\" command."));
|
||
|
||
/* Run the program until reaching the main procedure... */
|
||
run_command_1 (args, from_tty, 1);
|
||
}
|
||
|
||
static int
|
||
proceed_thread_callback (struct thread_info *thread, void *arg)
|
||
{
|
||
/* We go through all threads individually instead of compressing
|
||
into a single target `resume_all' request, because some threads
|
||
may be stopped in internal breakpoints/events, or stopped waiting
|
||
for its turn in the displaced stepping queue (that is, they are
|
||
running && !executing). The target side has no idea about why
|
||
the thread is stopped, so a `resume_all' command would resume too
|
||
much. If/when GDB gains a way to tell the target `hold this
|
||
thread stopped until I say otherwise', then we can optimize
|
||
this. */
|
||
if (!is_stopped (thread->ptid))
|
||
return 0;
|
||
|
||
switch_to_thread (thread->ptid);
|
||
clear_proceed_status ();
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
ensure_valid_thread (void)
|
||
{
|
||
if (ptid_equal (inferior_ptid, null_ptid)
|
||
|| is_exited (inferior_ptid))
|
||
error (_("Cannot execute this command without a live selected thread."));
|
||
}
|
||
|
||
/* If the user is looking at trace frames, any resumption of execution
|
||
is likely to mix up recorded and live target data. So simply
|
||
disallow those commands. */
|
||
|
||
static void
|
||
ensure_not_tfind_mode (void)
|
||
{
|
||
if (get_traceframe_number () >= 0)
|
||
error (_("Cannot execute this command while looking at trace frames."));
|
||
}
|
||
|
||
void
|
||
continue_1 (int all_threads)
|
||
{
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
|
||
if (non_stop && all_threads)
|
||
{
|
||
/* Don't error out if the current thread is running, because
|
||
there may be other stopped threads. */
|
||
struct cleanup *old_chain;
|
||
|
||
/* Backup current thread and selected frame. */
|
||
old_chain = make_cleanup_restore_current_thread ();
|
||
|
||
iterate_over_threads (proceed_thread_callback, NULL);
|
||
|
||
/* Restore selected ptid. */
|
||
do_cleanups (old_chain);
|
||
}
|
||
else
|
||
{
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
clear_proceed_status ();
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
|
||
}
|
||
}
|
||
|
||
/* continue [-a] [proceed-count] [&] */
|
||
void
|
||
continue_command (char *args, int from_tty)
|
||
{
|
||
int async_exec = 0;
|
||
int all_threads = 0;
|
||
ERROR_NO_INFERIOR;
|
||
|
||
/* Find out whether we must run in the background. */
|
||
if (args != NULL)
|
||
async_exec = strip_bg_char (&args);
|
||
|
||
/* If we must run in the background, but the target can't do it,
|
||
error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
/* If we are not asked to run in the bg, then prepare to run in the
|
||
foreground, synchronously. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
if (args != NULL)
|
||
{
|
||
if (strncmp (args, "-a", sizeof ("-a") - 1) == 0)
|
||
{
|
||
all_threads = 1;
|
||
args += sizeof ("-a") - 1;
|
||
if (*args == '\0')
|
||
args = NULL;
|
||
}
|
||
}
|
||
|
||
if (!non_stop && all_threads)
|
||
error (_("`-a' is meaningless in all-stop mode."));
|
||
|
||
if (args != NULL && all_threads)
|
||
error (_("Can't resume all threads and specify "
|
||
"proceed count simultaneously."));
|
||
|
||
/* If we have an argument left, set proceed count of breakpoint we
|
||
stopped at. */
|
||
if (args != NULL)
|
||
{
|
||
bpstat bs = NULL;
|
||
int num, stat;
|
||
int stopped = 0;
|
||
struct thread_info *tp;
|
||
|
||
if (non_stop)
|
||
tp = find_thread_ptid (inferior_ptid);
|
||
else
|
||
{
|
||
ptid_t last_ptid;
|
||
struct target_waitstatus ws;
|
||
|
||
get_last_target_status (&last_ptid, &ws);
|
||
tp = find_thread_ptid (last_ptid);
|
||
}
|
||
if (tp != NULL)
|
||
bs = tp->control.stop_bpstat;
|
||
|
||
while ((stat = bpstat_num (&bs, &num)) != 0)
|
||
if (stat > 0)
|
||
{
|
||
set_ignore_count (num,
|
||
parse_and_eval_long (args) - 1,
|
||
from_tty);
|
||
/* set_ignore_count prints a message ending with a period.
|
||
So print two spaces before "Continuing.". */
|
||
if (from_tty)
|
||
printf_filtered (" ");
|
||
stopped = 1;
|
||
}
|
||
|
||
if (!stopped && from_tty)
|
||
{
|
||
printf_filtered
|
||
("Not stopped at any breakpoint; argument ignored.\n");
|
||
}
|
||
}
|
||
|
||
if (from_tty)
|
||
printf_filtered (_("Continuing.\n"));
|
||
|
||
continue_1 (all_threads);
|
||
}
|
||
|
||
/* Record the starting point of a "step" or "next" command. */
|
||
|
||
static void
|
||
set_step_frame (void)
|
||
{
|
||
struct symtab_and_line sal;
|
||
|
||
find_frame_sal (get_current_frame (), &sal);
|
||
set_step_info (get_current_frame (), sal);
|
||
}
|
||
|
||
/* Step until outside of current statement. */
|
||
|
||
static void
|
||
step_command (char *count_string, int from_tty)
|
||
{
|
||
step_1 (0, 0, count_string);
|
||
}
|
||
|
||
/* Likewise, but skip over subroutine calls as if single instructions. */
|
||
|
||
static void
|
||
next_command (char *count_string, int from_tty)
|
||
{
|
||
step_1 (1, 0, count_string);
|
||
}
|
||
|
||
/* Likewise, but step only one instruction. */
|
||
|
||
void
|
||
stepi_command (char *count_string, int from_tty)
|
||
{
|
||
step_1 (0, 1, count_string);
|
||
}
|
||
|
||
void
|
||
nexti_command (char *count_string, int from_tty)
|
||
{
|
||
step_1 (1, 1, count_string);
|
||
}
|
||
|
||
void
|
||
delete_longjmp_breakpoint_cleanup (void *arg)
|
||
{
|
||
int thread = * (int *) arg;
|
||
delete_longjmp_breakpoint (thread);
|
||
}
|
||
|
||
static void
|
||
step_1 (int skip_subroutines, int single_inst, char *count_string)
|
||
{
|
||
int count = 1;
|
||
struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
|
||
int async_exec = 0;
|
||
int thread = -1;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
if (count_string)
|
||
async_exec = strip_bg_char (&count_string);
|
||
|
||
/* If we get a request for running in the bg but the target
|
||
doesn't support it, error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
/* If we don't get a request of running in the bg, then we need
|
||
to simulate synchronous (fg) execution. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
count = count_string ? parse_and_eval_long (count_string) : 1;
|
||
|
||
if (!single_inst || skip_subroutines) /* Leave si command alone. */
|
||
{
|
||
struct thread_info *tp = inferior_thread ();
|
||
|
||
if (in_thread_list (inferior_ptid))
|
||
thread = pid_to_thread_id (inferior_ptid);
|
||
|
||
set_longjmp_breakpoint (tp, get_frame_id (get_current_frame ()));
|
||
|
||
make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
|
||
}
|
||
|
||
/* In synchronous case, all is well; each step_once call will step once. */
|
||
if (!target_can_async_p ())
|
||
{
|
||
for (; count > 0; count--)
|
||
{
|
||
step_once (skip_subroutines, single_inst, count, thread);
|
||
|
||
if (!target_has_execution)
|
||
break;
|
||
else
|
||
{
|
||
struct thread_info *tp = inferior_thread ();
|
||
|
||
if (!tp->control.stop_step || !tp->step_multi)
|
||
{
|
||
/* If we stopped for some reason that is not stepping
|
||
there are no further steps to make. */
|
||
tp->step_multi = 0;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
do_cleanups (cleanups);
|
||
}
|
||
else
|
||
{
|
||
/* In the case of an asynchronous target things get complicated;
|
||
do only one step for now, before returning control to the
|
||
event loop. Let the continuation figure out how many other
|
||
steps we need to do, and handle them one at the time, through
|
||
step_once. */
|
||
step_once (skip_subroutines, single_inst, count, thread);
|
||
|
||
/* We are running, and the continuation is installed. It will
|
||
disable the longjmp breakpoint as appropriate. */
|
||
discard_cleanups (cleanups);
|
||
}
|
||
}
|
||
|
||
struct step_1_continuation_args
|
||
{
|
||
int count;
|
||
int skip_subroutines;
|
||
int single_inst;
|
||
int thread;
|
||
};
|
||
|
||
/* Called after we are done with one step operation, to check whether
|
||
we need to step again, before we print the prompt and return control
|
||
to the user. If count is > 1, we will need to do one more call to
|
||
proceed(), via step_once(). Basically it is like step_once and
|
||
step_1_continuation are co-recursive. */
|
||
static void
|
||
step_1_continuation (void *args, int err)
|
||
{
|
||
struct step_1_continuation_args *a = args;
|
||
|
||
if (target_has_execution)
|
||
{
|
||
struct thread_info *tp;
|
||
|
||
tp = inferior_thread ();
|
||
if (!err
|
||
&& tp->step_multi && tp->control.stop_step)
|
||
{
|
||
/* There are more steps to make, and we did stop due to
|
||
ending a stepping range. Do another step. */
|
||
step_once (a->skip_subroutines, a->single_inst,
|
||
a->count - 1, a->thread);
|
||
return;
|
||
}
|
||
tp->step_multi = 0;
|
||
}
|
||
|
||
/* We either hit an error, or stopped for some reason that is
|
||
not stepping, or there are no further steps to make.
|
||
Cleanup. */
|
||
if (!a->single_inst || a->skip_subroutines)
|
||
delete_longjmp_breakpoint (a->thread);
|
||
}
|
||
|
||
/* Do just one step operation. This is useful to implement the 'step
|
||
n' kind of commands. In case of asynchronous targets, we will have
|
||
to set up a continuation to be done after the target stops (after
|
||
this one step). For synch targets, the caller handles further
|
||
stepping. */
|
||
|
||
static void
|
||
step_once (int skip_subroutines, int single_inst, int count, int thread)
|
||
{
|
||
struct frame_info *frame = get_current_frame ();
|
||
|
||
if (count > 0)
|
||
{
|
||
/* Don't assume THREAD is a valid thread id. It is set to -1 if
|
||
the longjmp breakpoint was not required. Use the
|
||
INFERIOR_PTID thread instead, which is the same thread when
|
||
THREAD is set. */
|
||
struct thread_info *tp = inferior_thread ();
|
||
|
||
clear_proceed_status ();
|
||
set_step_frame ();
|
||
|
||
if (!single_inst)
|
||
{
|
||
CORE_ADDR pc;
|
||
|
||
/* Step at an inlined function behaves like "down". */
|
||
if (!skip_subroutines && !single_inst
|
||
&& inline_skipped_frames (inferior_ptid))
|
||
{
|
||
ptid_t resume_ptid;
|
||
|
||
/* Pretend that we've ran. */
|
||
resume_ptid = user_visible_resume_ptid (1);
|
||
set_running (resume_ptid, 1);
|
||
|
||
step_into_inline_frame (inferior_ptid);
|
||
if (count > 1)
|
||
step_once (skip_subroutines, single_inst, count - 1, thread);
|
||
else
|
||
{
|
||
/* Pretend that we've stopped. */
|
||
normal_stop ();
|
||
|
||
if (target_can_async_p ())
|
||
inferior_event_handler (INF_EXEC_COMPLETE, NULL);
|
||
}
|
||
return;
|
||
}
|
||
|
||
pc = get_frame_pc (frame);
|
||
find_pc_line_pc_range (pc,
|
||
&tp->control.step_range_start,
|
||
&tp->control.step_range_end);
|
||
|
||
/* If we have no line info, switch to stepi mode. */
|
||
if (tp->control.step_range_end == 0 && step_stop_if_no_debug)
|
||
tp->control.step_range_start = tp->control.step_range_end = 1;
|
||
else if (tp->control.step_range_end == 0)
|
||
{
|
||
const char *name;
|
||
|
||
if (find_pc_partial_function (pc, &name,
|
||
&tp->control.step_range_start,
|
||
&tp->control.step_range_end) == 0)
|
||
error (_("Cannot find bounds of current function"));
|
||
|
||
target_terminal_ours ();
|
||
printf_filtered (_("Single stepping until exit from function %s,"
|
||
"\nwhich has no line number information.\n"),
|
||
name);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Say we are stepping, but stop after one insn whatever it does. */
|
||
tp->control.step_range_start = tp->control.step_range_end = 1;
|
||
if (!skip_subroutines)
|
||
/* It is stepi.
|
||
Don't step over function calls, not even to functions lacking
|
||
line numbers. */
|
||
tp->control.step_over_calls = STEP_OVER_NONE;
|
||
}
|
||
|
||
if (skip_subroutines)
|
||
tp->control.step_over_calls = STEP_OVER_ALL;
|
||
|
||
tp->step_multi = (count > 1);
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
|
||
|
||
/* For async targets, register a continuation to do any
|
||
additional steps. For sync targets, the caller will handle
|
||
further stepping. */
|
||
if (target_can_async_p ())
|
||
{
|
||
struct step_1_continuation_args *args;
|
||
|
||
args = xmalloc (sizeof (*args));
|
||
args->skip_subroutines = skip_subroutines;
|
||
args->single_inst = single_inst;
|
||
args->count = count;
|
||
args->thread = thread;
|
||
|
||
add_intermediate_continuation (tp, step_1_continuation, args, xfree);
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
/* Continue program at specified address. */
|
||
|
||
static void
|
||
jump_command (char *arg, int from_tty)
|
||
{
|
||
struct gdbarch *gdbarch = get_current_arch ();
|
||
CORE_ADDR addr;
|
||
struct symtabs_and_lines sals;
|
||
struct symtab_and_line sal;
|
||
struct symbol *fn;
|
||
struct symbol *sfn;
|
||
int async_exec = 0;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
if (arg != NULL)
|
||
async_exec = strip_bg_char (&arg);
|
||
|
||
/* If we must run in the background, but the target can't do it,
|
||
error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
if (!arg)
|
||
error_no_arg (_("starting address"));
|
||
|
||
sals = decode_line_spec_1 (arg, DECODE_LINE_FUNFIRSTLINE);
|
||
if (sals.nelts != 1)
|
||
{
|
||
error (_("Unreasonable jump request"));
|
||
}
|
||
|
||
sal = sals.sals[0];
|
||
xfree (sals.sals);
|
||
|
||
if (sal.symtab == 0 && sal.pc == 0)
|
||
error (_("No source file has been specified."));
|
||
|
||
resolve_sal_pc (&sal); /* May error out. */
|
||
|
||
/* See if we are trying to jump to another function. */
|
||
fn = get_frame_function (get_current_frame ());
|
||
sfn = find_pc_function (sal.pc);
|
||
if (fn != NULL && sfn != fn)
|
||
{
|
||
if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line,
|
||
SYMBOL_PRINT_NAME (fn)))
|
||
{
|
||
error (_("Not confirmed."));
|
||
/* NOTREACHED */
|
||
}
|
||
}
|
||
|
||
if (sfn != NULL)
|
||
{
|
||
fixup_symbol_section (sfn, 0);
|
||
if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn)) &&
|
||
!section_is_mapped (SYMBOL_OBJ_SECTION (sfn)))
|
||
{
|
||
if (!query (_("WARNING!!! Destination is in "
|
||
"unmapped overlay! Jump anyway? ")))
|
||
{
|
||
error (_("Not confirmed."));
|
||
/* NOTREACHED */
|
||
}
|
||
}
|
||
}
|
||
|
||
addr = sal.pc;
|
||
|
||
if (from_tty)
|
||
{
|
||
printf_filtered (_("Continuing at "));
|
||
fputs_filtered (paddress (gdbarch, addr), gdb_stdout);
|
||
printf_filtered (".\n");
|
||
}
|
||
|
||
/* If we are not asked to run in the bg, then prepare to run in the
|
||
foreground, synchronously. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
clear_proceed_status ();
|
||
proceed (addr, GDB_SIGNAL_0, 0);
|
||
}
|
||
|
||
|
||
/* Go to line or address in current procedure. */
|
||
static void
|
||
go_command (char *line_no, int from_tty)
|
||
{
|
||
if (line_no == (char *) NULL || !*line_no)
|
||
printf_filtered (_("Usage: go <location>\n"));
|
||
else
|
||
{
|
||
tbreak_command (line_no, from_tty);
|
||
jump_command (line_no, from_tty);
|
||
}
|
||
}
|
||
|
||
|
||
/* Continue program giving it specified signal. */
|
||
|
||
static void
|
||
signal_command (char *signum_exp, int from_tty)
|
||
{
|
||
enum gdb_signal oursig;
|
||
int async_exec = 0;
|
||
|
||
dont_repeat (); /* Too dangerous. */
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
if (signum_exp != NULL)
|
||
async_exec = strip_bg_char (&signum_exp);
|
||
|
||
/* If we must run in the background, but the target can't do it,
|
||
error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
/* If we are not asked to run in the bg, then prepare to run in the
|
||
foreground, synchronously. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
if (!signum_exp)
|
||
error_no_arg (_("signal number"));
|
||
|
||
/* It would be even slicker to make signal names be valid expressions,
|
||
(the type could be "enum $signal" or some such), then the user could
|
||
assign them to convenience variables. */
|
||
oursig = gdb_signal_from_name (signum_exp);
|
||
|
||
if (oursig == GDB_SIGNAL_UNKNOWN)
|
||
{
|
||
/* No, try numeric. */
|
||
int num = parse_and_eval_long (signum_exp);
|
||
|
||
if (num == 0)
|
||
oursig = GDB_SIGNAL_0;
|
||
else
|
||
oursig = gdb_signal_from_command (num);
|
||
}
|
||
|
||
if (from_tty)
|
||
{
|
||
if (oursig == GDB_SIGNAL_0)
|
||
printf_filtered (_("Continuing with no signal.\n"));
|
||
else
|
||
printf_filtered (_("Continuing with signal %s.\n"),
|
||
gdb_signal_to_name (oursig));
|
||
}
|
||
|
||
clear_proceed_status ();
|
||
proceed ((CORE_ADDR) -1, oursig, 0);
|
||
}
|
||
|
||
/* Continuation args to be passed to the "until" command
|
||
continuation. */
|
||
struct until_next_continuation_args
|
||
{
|
||
/* The thread that was current when the command was executed. */
|
||
int thread;
|
||
};
|
||
|
||
/* A continuation callback for until_next_command. */
|
||
|
||
static void
|
||
until_next_continuation (void *arg, int err)
|
||
{
|
||
struct until_next_continuation_args *a = arg;
|
||
|
||
delete_longjmp_breakpoint (a->thread);
|
||
}
|
||
|
||
/* Proceed until we reach a different source line with pc greater than
|
||
our current one or exit the function. We skip calls in both cases.
|
||
|
||
Note that eventually this command should probably be changed so
|
||
that only source lines are printed out when we hit the breakpoint
|
||
we set. This may involve changes to wait_for_inferior and the
|
||
proceed status code. */
|
||
|
||
static void
|
||
until_next_command (int from_tty)
|
||
{
|
||
struct frame_info *frame;
|
||
CORE_ADDR pc;
|
||
struct symbol *func;
|
||
struct symtab_and_line sal;
|
||
struct thread_info *tp = inferior_thread ();
|
||
int thread = tp->num;
|
||
struct cleanup *old_chain;
|
||
|
||
clear_proceed_status ();
|
||
set_step_frame ();
|
||
|
||
frame = get_current_frame ();
|
||
|
||
/* Step until either exited from this function or greater
|
||
than the current line (if in symbolic section) or pc (if
|
||
not). */
|
||
|
||
pc = get_frame_pc (frame);
|
||
func = find_pc_function (pc);
|
||
|
||
if (!func)
|
||
{
|
||
struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc);
|
||
|
||
if (msymbol == NULL)
|
||
error (_("Execution is not within a known function."));
|
||
|
||
tp->control.step_range_start = SYMBOL_VALUE_ADDRESS (msymbol);
|
||
tp->control.step_range_end = pc;
|
||
}
|
||
else
|
||
{
|
||
sal = find_pc_line (pc, 0);
|
||
|
||
tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
|
||
tp->control.step_range_end = sal.end;
|
||
}
|
||
|
||
tp->control.step_over_calls = STEP_OVER_ALL;
|
||
|
||
tp->step_multi = 0; /* Only one call to proceed */
|
||
|
||
set_longjmp_breakpoint (tp, get_frame_id (frame));
|
||
old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
|
||
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
|
||
|
||
if (target_can_async_p () && is_running (inferior_ptid))
|
||
{
|
||
struct until_next_continuation_args *cont_args;
|
||
|
||
discard_cleanups (old_chain);
|
||
cont_args = XNEW (struct until_next_continuation_args);
|
||
cont_args->thread = inferior_thread ()->num;
|
||
|
||
add_continuation (tp, until_next_continuation, cont_args, xfree);
|
||
}
|
||
else
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
static void
|
||
until_command (char *arg, int from_tty)
|
||
{
|
||
int async_exec = 0;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
if (arg != NULL)
|
||
async_exec = strip_bg_char (&arg);
|
||
|
||
/* If we must run in the background, but the target can't do it,
|
||
error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
/* If we are not asked to run in the bg, then prepare to run in the
|
||
foreground, synchronously. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
if (arg)
|
||
until_break_command (arg, from_tty, 0);
|
||
else
|
||
until_next_command (from_tty);
|
||
}
|
||
|
||
static void
|
||
advance_command (char *arg, int from_tty)
|
||
{
|
||
int async_exec = 0;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
if (arg == NULL)
|
||
error_no_arg (_("a location"));
|
||
|
||
/* Find out whether we must run in the background. */
|
||
if (arg != NULL)
|
||
async_exec = strip_bg_char (&arg);
|
||
|
||
/* If we must run in the background, but the target can't do it,
|
||
error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
/* If we are not asked to run in the bg, then prepare to run in the
|
||
foreground, synchronously. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
until_break_command (arg, from_tty, 1);
|
||
}
|
||
|
||
/* Return the value of the result of a function at the end of a 'finish'
|
||
command/BP. */
|
||
|
||
struct value *
|
||
get_return_value (struct value *function, struct type *value_type)
|
||
{
|
||
struct regcache *stop_regs = stop_registers;
|
||
struct gdbarch *gdbarch;
|
||
struct value *value;
|
||
struct ui_out *uiout = current_uiout;
|
||
struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
|
||
|
||
/* If stop_registers were not saved, use the current registers. */
|
||
if (!stop_regs)
|
||
{
|
||
stop_regs = regcache_dup (get_current_regcache ());
|
||
cleanup = make_cleanup_regcache_xfree (stop_regs);
|
||
}
|
||
|
||
gdbarch = get_regcache_arch (stop_regs);
|
||
|
||
CHECK_TYPEDEF (value_type);
|
||
gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID);
|
||
|
||
/* FIXME: 2003-09-27: When returning from a nested inferior function
|
||
call, it's possible (with no help from the architecture vector)
|
||
to locate and return/print a "struct return" value. This is just
|
||
a more complicated case of what is already being done in the
|
||
inferior function call code. In fact, when inferior function
|
||
calls are made async, this will likely be made the norm. */
|
||
|
||
switch (gdbarch_return_value (gdbarch, function, value_type,
|
||
NULL, NULL, NULL))
|
||
{
|
||
case RETURN_VALUE_REGISTER_CONVENTION:
|
||
case RETURN_VALUE_ABI_RETURNS_ADDRESS:
|
||
case RETURN_VALUE_ABI_PRESERVES_ADDRESS:
|
||
value = allocate_value (value_type);
|
||
gdbarch_return_value (gdbarch, function, value_type, stop_regs,
|
||
value_contents_raw (value), NULL);
|
||
break;
|
||
case RETURN_VALUE_STRUCT_CONVENTION:
|
||
value = NULL;
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__, _("bad switch"));
|
||
}
|
||
|
||
do_cleanups (cleanup);
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Print the result of a function at the end of a 'finish' command. */
|
||
|
||
static void
|
||
print_return_value (struct value *function, struct type *value_type)
|
||
{
|
||
struct value *value = get_return_value (function, value_type);
|
||
struct ui_out *uiout = current_uiout;
|
||
|
||
if (value)
|
||
{
|
||
struct value_print_options opts;
|
||
struct ui_file *stb;
|
||
struct cleanup *old_chain;
|
||
|
||
/* Print it. */
|
||
stb = mem_fileopen ();
|
||
old_chain = make_cleanup_ui_file_delete (stb);
|
||
ui_out_text (uiout, "Value returned is ");
|
||
ui_out_field_fmt (uiout, "gdb-result-var", "$%d",
|
||
record_latest_value (value));
|
||
ui_out_text (uiout, " = ");
|
||
get_raw_print_options (&opts);
|
||
value_print (value, stb, &opts);
|
||
ui_out_field_stream (uiout, "return-value", stb);
|
||
ui_out_text (uiout, "\n");
|
||
do_cleanups (old_chain);
|
||
}
|
||
else
|
||
{
|
||
ui_out_text (uiout, "Value returned has type: ");
|
||
ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type));
|
||
ui_out_text (uiout, ".");
|
||
ui_out_text (uiout, " Cannot determine contents\n");
|
||
}
|
||
}
|
||
|
||
/* Stuff that needs to be done by the finish command after the target
|
||
has stopped. In asynchronous mode, we wait for the target to stop
|
||
in the call to poll or select in the event loop, so it is
|
||
impossible to do all the stuff as part of the finish_command
|
||
function itself. The only chance we have to complete this command
|
||
is in fetch_inferior_event, which is called by the event loop as
|
||
soon as it detects that the target has stopped. */
|
||
|
||
struct finish_command_continuation_args
|
||
{
|
||
/* The thread that as current when the command was executed. */
|
||
int thread;
|
||
struct breakpoint *breakpoint;
|
||
struct symbol *function;
|
||
};
|
||
|
||
static void
|
||
finish_command_continuation (void *arg, int err)
|
||
{
|
||
struct finish_command_continuation_args *a = arg;
|
||
|
||
if (!err)
|
||
{
|
||
struct thread_info *tp = NULL;
|
||
bpstat bs = NULL;
|
||
|
||
if (!ptid_equal (inferior_ptid, null_ptid)
|
||
&& target_has_execution
|
||
&& is_stopped (inferior_ptid))
|
||
{
|
||
tp = inferior_thread ();
|
||
bs = tp->control.stop_bpstat;
|
||
}
|
||
|
||
if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL
|
||
&& a->function != NULL)
|
||
{
|
||
struct type *value_type;
|
||
|
||
value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function));
|
||
if (!value_type)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("finish_command: function has no target type"));
|
||
|
||
if (TYPE_CODE (value_type) != TYPE_CODE_VOID)
|
||
{
|
||
volatile struct gdb_exception ex;
|
||
struct value *func;
|
||
|
||
func = read_var_value (a->function, get_current_frame ());
|
||
TRY_CATCH (ex, RETURN_MASK_ALL)
|
||
{
|
||
/* print_return_value can throw an exception in some
|
||
circumstances. We need to catch this so that we still
|
||
delete the breakpoint. */
|
||
print_return_value (func, value_type);
|
||
}
|
||
if (ex.reason < 0)
|
||
exception_print (gdb_stdout, ex);
|
||
}
|
||
}
|
||
|
||
/* We suppress normal call of normal_stop observer and do it
|
||
here so that the *stopped notification includes the return
|
||
value. */
|
||
if (bs != NULL && tp->control.proceed_to_finish)
|
||
observer_notify_normal_stop (bs, 1 /* print frame */);
|
||
}
|
||
|
||
delete_breakpoint (a->breakpoint);
|
||
delete_longjmp_breakpoint (a->thread);
|
||
}
|
||
|
||
static void
|
||
finish_command_continuation_free_arg (void *arg)
|
||
{
|
||
xfree (arg);
|
||
}
|
||
|
||
/* finish_backward -- helper function for finish_command. */
|
||
|
||
static void
|
||
finish_backward (struct symbol *function)
|
||
{
|
||
struct symtab_and_line sal;
|
||
struct thread_info *tp = inferior_thread ();
|
||
CORE_ADDR pc;
|
||
CORE_ADDR func_addr;
|
||
|
||
pc = get_frame_pc (get_current_frame ());
|
||
|
||
if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0)
|
||
internal_error (__FILE__, __LINE__,
|
||
_("Finish: couldn't find function."));
|
||
|
||
sal = find_pc_line (func_addr, 0);
|
||
|
||
tp->control.proceed_to_finish = 1;
|
||
/* Special case: if we're sitting at the function entry point,
|
||
then all we need to do is take a reverse singlestep. We
|
||
don't need to set a breakpoint, and indeed it would do us
|
||
no good to do so.
|
||
|
||
Note that this can only happen at frame #0, since there's
|
||
no way that a function up the stack can have a return address
|
||
that's equal to its entry point. */
|
||
|
||
if (sal.pc != pc)
|
||
{
|
||
struct frame_info *frame = get_selected_frame (NULL);
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
struct symtab_and_line sr_sal;
|
||
|
||
/* Set a step-resume at the function's entry point. Once that's
|
||
hit, we'll do one more step backwards. */
|
||
init_sal (&sr_sal);
|
||
sr_sal.pc = sal.pc;
|
||
sr_sal.pspace = get_frame_program_space (frame);
|
||
insert_step_resume_breakpoint_at_sal (gdbarch,
|
||
sr_sal, null_frame_id);
|
||
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
|
||
}
|
||
else
|
||
{
|
||
/* We're almost there -- we just need to back up by one more
|
||
single-step. */
|
||
tp->control.step_range_start = tp->control.step_range_end = 1;
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
|
||
}
|
||
}
|
||
|
||
/* finish_forward -- helper function for finish_command. */
|
||
|
||
static void
|
||
finish_forward (struct symbol *function, struct frame_info *frame)
|
||
{
|
||
struct frame_id frame_id = get_frame_id (frame);
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
struct symtab_and_line sal;
|
||
struct thread_info *tp = inferior_thread ();
|
||
struct breakpoint *breakpoint;
|
||
struct cleanup *old_chain;
|
||
struct finish_command_continuation_args *cargs;
|
||
int thread = tp->num;
|
||
|
||
sal = find_pc_line (get_frame_pc (frame), 0);
|
||
sal.pc = get_frame_pc (frame);
|
||
|
||
breakpoint = set_momentary_breakpoint (gdbarch, sal,
|
||
get_stack_frame_id (frame),
|
||
bp_finish);
|
||
|
||
/* set_momentary_breakpoint invalidates FRAME. */
|
||
frame = NULL;
|
||
|
||
old_chain = make_cleanup_delete_breakpoint (breakpoint);
|
||
|
||
set_longjmp_breakpoint (tp, frame_id);
|
||
make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
|
||
|
||
/* We want stop_registers, please... */
|
||
tp->control.proceed_to_finish = 1;
|
||
cargs = xmalloc (sizeof (*cargs));
|
||
|
||
cargs->thread = thread;
|
||
cargs->breakpoint = breakpoint;
|
||
cargs->function = function;
|
||
add_continuation (tp, finish_command_continuation, cargs,
|
||
finish_command_continuation_free_arg);
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
|
||
|
||
discard_cleanups (old_chain);
|
||
if (!target_can_async_p ())
|
||
do_all_continuations (0);
|
||
}
|
||
|
||
/* "finish": Set a temporary breakpoint at the place the selected
|
||
frame will return to, then continue. */
|
||
|
||
static void
|
||
finish_command (char *arg, int from_tty)
|
||
{
|
||
struct frame_info *frame;
|
||
struct symbol *function;
|
||
|
||
int async_exec = 0;
|
||
|
||
ERROR_NO_INFERIOR;
|
||
ensure_not_tfind_mode ();
|
||
ensure_valid_thread ();
|
||
ensure_not_running ();
|
||
|
||
/* Find out whether we must run in the background. */
|
||
if (arg != NULL)
|
||
async_exec = strip_bg_char (&arg);
|
||
|
||
/* If we must run in the background, but the target can't do it,
|
||
error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
|
||
/* If we are not asked to run in the bg, then prepare to run in the
|
||
foreground, synchronously. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
}
|
||
|
||
if (arg)
|
||
error (_("The \"finish\" command does not take any arguments."));
|
||
|
||
frame = get_prev_frame (get_selected_frame (_("No selected frame.")));
|
||
if (frame == 0)
|
||
error (_("\"finish\" not meaningful in the outermost frame."));
|
||
|
||
clear_proceed_status ();
|
||
|
||
/* Finishing from an inline frame is completely different. We don't
|
||
try to show the "return value" - no way to locate it. So we do
|
||
not need a completion. */
|
||
if (get_frame_type (get_selected_frame (_("No selected frame.")))
|
||
== INLINE_FRAME)
|
||
{
|
||
/* Claim we are stepping in the calling frame. An empty step
|
||
range means that we will stop once we aren't in a function
|
||
called by that frame. We don't use the magic "1" value for
|
||
step_range_end, because then infrun will think this is nexti,
|
||
and not step over the rest of this inlined function call. */
|
||
struct thread_info *tp = inferior_thread ();
|
||
struct symtab_and_line empty_sal;
|
||
|
||
init_sal (&empty_sal);
|
||
set_step_info (frame, empty_sal);
|
||
tp->control.step_range_start = get_frame_pc (frame);
|
||
tp->control.step_range_end = tp->control.step_range_start;
|
||
tp->control.step_over_calls = STEP_OVER_ALL;
|
||
|
||
/* Print info on the selected frame, including level number but not
|
||
source. */
|
||
if (from_tty)
|
||
{
|
||
printf_filtered (_("Run till exit from "));
|
||
print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
|
||
}
|
||
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 1);
|
||
return;
|
||
}
|
||
|
||
/* Find the function we will return from. */
|
||
|
||
function = find_pc_function (get_frame_pc (get_selected_frame (NULL)));
|
||
|
||
/* Print info on the selected frame, including level number but not
|
||
source. */
|
||
if (from_tty)
|
||
{
|
||
if (execution_direction == EXEC_REVERSE)
|
||
printf_filtered (_("Run back to call of "));
|
||
else
|
||
printf_filtered (_("Run till exit from "));
|
||
|
||
print_stack_frame (get_selected_frame (NULL), 1, LOCATION);
|
||
}
|
||
|
||
if (execution_direction == EXEC_REVERSE)
|
||
finish_backward (function);
|
||
else
|
||
finish_forward (function, frame);
|
||
}
|
||
|
||
|
||
static void
|
||
program_info (char *args, int from_tty)
|
||
{
|
||
bpstat bs;
|
||
int num, stat;
|
||
struct thread_info *tp;
|
||
ptid_t ptid;
|
||
|
||
if (!target_has_execution)
|
||
{
|
||
printf_filtered (_("The program being debugged is not being run.\n"));
|
||
return;
|
||
}
|
||
|
||
if (non_stop)
|
||
ptid = inferior_ptid;
|
||
else
|
||
{
|
||
struct target_waitstatus ws;
|
||
|
||
get_last_target_status (&ptid, &ws);
|
||
}
|
||
|
||
if (ptid_equal (ptid, null_ptid) || is_exited (ptid))
|
||
error (_("Invalid selected thread."));
|
||
else if (is_running (ptid))
|
||
error (_("Selected thread is running."));
|
||
|
||
tp = find_thread_ptid (ptid);
|
||
bs = tp->control.stop_bpstat;
|
||
stat = bpstat_num (&bs, &num);
|
||
|
||
target_files_info ();
|
||
printf_filtered (_("Program stopped at %s.\n"),
|
||
paddress (target_gdbarch, stop_pc));
|
||
if (tp->control.stop_step)
|
||
printf_filtered (_("It stopped after being stepped.\n"));
|
||
else if (stat != 0)
|
||
{
|
||
/* There may be several breakpoints in the same place, so this
|
||
isn't as strange as it seems. */
|
||
while (stat != 0)
|
||
{
|
||
if (stat < 0)
|
||
{
|
||
printf_filtered (_("It stopped at a breakpoint "
|
||
"that has since been deleted.\n"));
|
||
}
|
||
else
|
||
printf_filtered (_("It stopped at breakpoint %d.\n"), num);
|
||
stat = bpstat_num (&bs, &num);
|
||
}
|
||
}
|
||
else if (tp->suspend.stop_signal != GDB_SIGNAL_0)
|
||
{
|
||
printf_filtered (_("It stopped with signal %s, %s.\n"),
|
||
gdb_signal_to_name (tp->suspend.stop_signal),
|
||
gdb_signal_to_string (tp->suspend.stop_signal));
|
||
}
|
||
|
||
if (!from_tty)
|
||
{
|
||
printf_filtered (_("Type \"info stack\" or \"info "
|
||
"registers\" for more information.\n"));
|
||
}
|
||
}
|
||
|
||
static void
|
||
environment_info (char *var, int from_tty)
|
||
{
|
||
if (var)
|
||
{
|
||
char *val = get_in_environ (current_inferior ()->environment, var);
|
||
|
||
if (val)
|
||
{
|
||
puts_filtered (var);
|
||
puts_filtered (" = ");
|
||
puts_filtered (val);
|
||
puts_filtered ("\n");
|
||
}
|
||
else
|
||
{
|
||
puts_filtered ("Environment variable \"");
|
||
puts_filtered (var);
|
||
puts_filtered ("\" not defined.\n");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
char **vector = environ_vector (current_inferior ()->environment);
|
||
|
||
while (*vector)
|
||
{
|
||
puts_filtered (*vector++);
|
||
puts_filtered ("\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
set_environment_command (char *arg, int from_tty)
|
||
{
|
||
char *p, *val, *var;
|
||
int nullset = 0;
|
||
|
||
if (arg == 0)
|
||
error_no_arg (_("environment variable and value"));
|
||
|
||
/* Find seperation between variable name and value. */
|
||
p = (char *) strchr (arg, '=');
|
||
val = (char *) strchr (arg, ' ');
|
||
|
||
if (p != 0 && val != 0)
|
||
{
|
||
/* We have both a space and an equals. If the space is before the
|
||
equals, walk forward over the spaces til we see a nonspace
|
||
(possibly the equals). */
|
||
if (p > val)
|
||
while (*val == ' ')
|
||
val++;
|
||
|
||
/* Now if the = is after the char following the spaces,
|
||
take the char following the spaces. */
|
||
if (p > val)
|
||
p = val - 1;
|
||
}
|
||
else if (val != 0 && p == 0)
|
||
p = val;
|
||
|
||
if (p == arg)
|
||
error_no_arg (_("environment variable to set"));
|
||
|
||
if (p == 0 || p[1] == 0)
|
||
{
|
||
nullset = 1;
|
||
if (p == 0)
|
||
p = arg + strlen (arg); /* So that savestring below will work. */
|
||
}
|
||
else
|
||
{
|
||
/* Not setting variable value to null. */
|
||
val = p + 1;
|
||
while (*val == ' ' || *val == '\t')
|
||
val++;
|
||
}
|
||
|
||
while (p != arg && (p[-1] == ' ' || p[-1] == '\t'))
|
||
p--;
|
||
|
||
var = savestring (arg, p - arg);
|
||
if (nullset)
|
||
{
|
||
printf_filtered (_("Setting environment variable "
|
||
"\"%s\" to null value.\n"),
|
||
var);
|
||
set_in_environ (current_inferior ()->environment, var, "");
|
||
}
|
||
else
|
||
set_in_environ (current_inferior ()->environment, var, val);
|
||
xfree (var);
|
||
}
|
||
|
||
static void
|
||
unset_environment_command (char *var, int from_tty)
|
||
{
|
||
if (var == 0)
|
||
{
|
||
/* If there is no argument, delete all environment variables.
|
||
Ask for confirmation if reading from the terminal. */
|
||
if (!from_tty || query (_("Delete all environment variables? ")))
|
||
{
|
||
free_environ (current_inferior ()->environment);
|
||
current_inferior ()->environment = make_environ ();
|
||
}
|
||
}
|
||
else
|
||
unset_in_environ (current_inferior ()->environment, var);
|
||
}
|
||
|
||
/* Handle the execution path (PATH variable). */
|
||
|
||
static const char path_var_name[] = "PATH";
|
||
|
||
static void
|
||
path_info (char *args, int from_tty)
|
||
{
|
||
puts_filtered ("Executable and object file path: ");
|
||
puts_filtered (get_in_environ (current_inferior ()->environment,
|
||
path_var_name));
|
||
puts_filtered ("\n");
|
||
}
|
||
|
||
/* Add zero or more directories to the front of the execution path. */
|
||
|
||
static void
|
||
path_command (char *dirname, int from_tty)
|
||
{
|
||
char *exec_path;
|
||
char *env;
|
||
|
||
dont_repeat ();
|
||
env = get_in_environ (current_inferior ()->environment, path_var_name);
|
||
/* Can be null if path is not set. */
|
||
if (!env)
|
||
env = "";
|
||
exec_path = xstrdup (env);
|
||
mod_path (dirname, &exec_path);
|
||
set_in_environ (current_inferior ()->environment, path_var_name, exec_path);
|
||
xfree (exec_path);
|
||
if (from_tty)
|
||
path_info ((char *) NULL, from_tty);
|
||
}
|
||
|
||
|
||
/* Print out the machine register regnum. If regnum is -1, print all
|
||
registers (print_all == 1) or all non-float and non-vector
|
||
registers (print_all == 0).
|
||
|
||
For most machines, having all_registers_info() print the
|
||
register(s) one per line is good enough. If a different format is
|
||
required, (eg, for MIPS or Pyramid 90x, which both have lots of
|
||
regs), or there is an existing convention for showing all the
|
||
registers, define the architecture method PRINT_REGISTERS_INFO to
|
||
provide that format. */
|
||
|
||
void
|
||
default_print_registers_info (struct gdbarch *gdbarch,
|
||
struct ui_file *file,
|
||
struct frame_info *frame,
|
||
int regnum, int print_all)
|
||
{
|
||
int i;
|
||
const int numregs = gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
|
||
for (i = 0; i < numregs; i++)
|
||
{
|
||
struct type *regtype;
|
||
struct value *val;
|
||
|
||
/* Decide between printing all regs, non-float / vector regs, or
|
||
specific reg. */
|
||
if (regnum == -1)
|
||
{
|
||
if (print_all)
|
||
{
|
||
if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup))
|
||
continue;
|
||
}
|
||
else
|
||
{
|
||
if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup))
|
||
continue;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (i != regnum)
|
||
continue;
|
||
}
|
||
|
||
/* If the register name is empty, it is undefined for this
|
||
processor, so don't display anything. */
|
||
if (gdbarch_register_name (gdbarch, i) == NULL
|
||
|| *(gdbarch_register_name (gdbarch, i)) == '\0')
|
||
continue;
|
||
|
||
fputs_filtered (gdbarch_register_name (gdbarch, i), file);
|
||
print_spaces_filtered (15 - strlen (gdbarch_register_name
|
||
(gdbarch, i)), file);
|
||
|
||
regtype = register_type (gdbarch, i);
|
||
val = allocate_value (regtype);
|
||
|
||
/* Get the data in raw format. */
|
||
if (! frame_register_read (frame, i, value_contents_raw (val)))
|
||
{
|
||
fprintf_filtered (file, "*value not available*\n");
|
||
continue;
|
||
}
|
||
|
||
/* If virtual format is floating, print it that way, and in raw
|
||
hex. */
|
||
if (TYPE_CODE (regtype) == TYPE_CODE_FLT
|
||
|| TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT)
|
||
{
|
||
int j;
|
||
struct value_print_options opts;
|
||
const gdb_byte *valaddr = value_contents_for_printing (val);
|
||
|
||
get_user_print_options (&opts);
|
||
opts.deref_ref = 1;
|
||
|
||
val_print (regtype,
|
||
value_contents_for_printing (val),
|
||
value_embedded_offset (val), 0,
|
||
file, 0, val, &opts, current_language);
|
||
|
||
fprintf_filtered (file, "\t(raw 0x");
|
||
for (j = 0; j < register_size (gdbarch, i); j++)
|
||
{
|
||
int idx;
|
||
|
||
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
|
||
idx = j;
|
||
else
|
||
idx = register_size (gdbarch, i) - 1 - j;
|
||
fprintf_filtered (file, "%02x", (unsigned char) valaddr[idx]);
|
||
}
|
||
fprintf_filtered (file, ")");
|
||
}
|
||
else
|
||
{
|
||
struct value_print_options opts;
|
||
|
||
/* Print the register in hex. */
|
||
get_formatted_print_options (&opts, 'x');
|
||
opts.deref_ref = 1;
|
||
val_print (regtype,
|
||
value_contents_for_printing (val),
|
||
value_embedded_offset (val), 0,
|
||
file, 0, val, &opts, current_language);
|
||
/* If not a vector register, print it also according to its
|
||
natural format. */
|
||
if (TYPE_VECTOR (regtype) == 0)
|
||
{
|
||
get_user_print_options (&opts);
|
||
opts.deref_ref = 1;
|
||
fprintf_filtered (file, "\t");
|
||
val_print (regtype,
|
||
value_contents_for_printing (val),
|
||
value_embedded_offset (val), 0,
|
||
file, 0, val, &opts, current_language);
|
||
}
|
||
}
|
||
|
||
fprintf_filtered (file, "\n");
|
||
}
|
||
}
|
||
|
||
void
|
||
registers_info (char *addr_exp, int fpregs)
|
||
{
|
||
struct frame_info *frame;
|
||
struct gdbarch *gdbarch;
|
||
|
||
if (!target_has_registers)
|
||
error (_("The program has no registers now."));
|
||
frame = get_selected_frame (NULL);
|
||
gdbarch = get_frame_arch (frame);
|
||
|
||
if (!addr_exp)
|
||
{
|
||
gdbarch_print_registers_info (gdbarch, gdb_stdout,
|
||
frame, -1, fpregs);
|
||
return;
|
||
}
|
||
|
||
while (*addr_exp != '\0')
|
||
{
|
||
char *start;
|
||
const char *end;
|
||
|
||
/* Keep skipping leading white space. */
|
||
if (isspace ((*addr_exp)))
|
||
{
|
||
addr_exp++;
|
||
continue;
|
||
}
|
||
|
||
/* Discard any leading ``$''. Check that there is something
|
||
resembling a register following it. */
|
||
if (addr_exp[0] == '$')
|
||
addr_exp++;
|
||
if (isspace ((*addr_exp)) || (*addr_exp) == '\0')
|
||
error (_("Missing register name"));
|
||
|
||
/* Find the start/end of this register name/num/group. */
|
||
start = addr_exp;
|
||
while ((*addr_exp) != '\0' && !isspace ((*addr_exp)))
|
||
addr_exp++;
|
||
end = addr_exp;
|
||
|
||
/* Figure out what we've found and display it. */
|
||
|
||
/* A register name? */
|
||
{
|
||
int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start);
|
||
|
||
if (regnum >= 0)
|
||
{
|
||
/* User registers lie completely outside of the range of
|
||
normal registers. Catch them early so that the target
|
||
never sees them. */
|
||
if (regnum >= gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch))
|
||
{
|
||
struct value_print_options opts;
|
||
struct value *val = value_of_user_reg (regnum, frame);
|
||
|
||
printf_filtered ("%.*s: ", (int) (end - start), start);
|
||
get_formatted_print_options (&opts, 'x');
|
||
val_print_scalar_formatted (check_typedef (value_type (val)),
|
||
value_contents_for_printing (val),
|
||
value_embedded_offset (val),
|
||
val,
|
||
&opts, 0, gdb_stdout);
|
||
printf_filtered ("\n");
|
||
}
|
||
else
|
||
gdbarch_print_registers_info (gdbarch, gdb_stdout,
|
||
frame, regnum, fpregs);
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* A register group? */
|
||
{
|
||
struct reggroup *group;
|
||
|
||
for (group = reggroup_next (gdbarch, NULL);
|
||
group != NULL;
|
||
group = reggroup_next (gdbarch, group))
|
||
{
|
||
/* Don't bother with a length check. Should the user
|
||
enter a short register group name, go with the first
|
||
group that matches. */
|
||
if (strncmp (start, reggroup_name (group), end - start) == 0)
|
||
break;
|
||
}
|
||
if (group != NULL)
|
||
{
|
||
int regnum;
|
||
|
||
for (regnum = 0;
|
||
regnum < gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
regnum++)
|
||
{
|
||
if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
|
||
gdbarch_print_registers_info (gdbarch,
|
||
gdb_stdout, frame,
|
||
regnum, fpregs);
|
||
}
|
||
continue;
|
||
}
|
||
}
|
||
|
||
/* Nothing matched. */
|
||
error (_("Invalid register `%.*s'"), (int) (end - start), start);
|
||
}
|
||
}
|
||
|
||
void
|
||
all_registers_info (char *addr_exp, int from_tty)
|
||
{
|
||
registers_info (addr_exp, 1);
|
||
}
|
||
|
||
static void
|
||
nofp_registers_info (char *addr_exp, int from_tty)
|
||
{
|
||
registers_info (addr_exp, 0);
|
||
}
|
||
|
||
static void
|
||
print_vector_info (struct ui_file *file,
|
||
struct frame_info *frame, const char *args)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
|
||
if (gdbarch_print_vector_info_p (gdbarch))
|
||
gdbarch_print_vector_info (gdbarch, file, frame, args);
|
||
else
|
||
{
|
||
int regnum;
|
||
int printed_something = 0;
|
||
|
||
for (regnum = 0;
|
||
regnum < gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
regnum++)
|
||
{
|
||
if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup))
|
||
{
|
||
printed_something = 1;
|
||
gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
|
||
}
|
||
}
|
||
if (!printed_something)
|
||
fprintf_filtered (file, "No vector information\n");
|
||
}
|
||
}
|
||
|
||
static void
|
||
vector_info (char *args, int from_tty)
|
||
{
|
||
if (!target_has_registers)
|
||
error (_("The program has no registers now."));
|
||
|
||
print_vector_info (gdb_stdout, get_selected_frame (NULL), args);
|
||
}
|
||
|
||
/* Kill the inferior process. Make us have no inferior. */
|
||
|
||
static void
|
||
kill_command (char *arg, int from_tty)
|
||
{
|
||
/* FIXME: This should not really be inferior_ptid (or target_has_execution).
|
||
It should be a distinct flag that indicates that a target is active, cuz
|
||
some targets don't have processes! */
|
||
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
error (_("The program is not being run."));
|
||
if (!query (_("Kill the program being debugged? ")))
|
||
error (_("Not confirmed."));
|
||
target_kill ();
|
||
|
||
/* If we still have other inferiors to debug, then don't mess with
|
||
with their threads. */
|
||
if (!have_inferiors ())
|
||
{
|
||
init_thread_list (); /* Destroy thread info. */
|
||
|
||
/* Killing off the inferior can leave us with a core file. If
|
||
so, print the state we are left in. */
|
||
if (target_has_stack)
|
||
{
|
||
printf_filtered (_("In %s,\n"), target_longname);
|
||
print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
|
||
}
|
||
}
|
||
bfd_cache_close_all ();
|
||
}
|
||
|
||
/* Used in `attach&' command. ARG is a point to an integer
|
||
representing a process id. Proceed threads of this process iff
|
||
they stopped due to debugger request, and when they did, they
|
||
reported a clean stop (GDB_SIGNAL_0). Do not proceed threads
|
||
that have been explicitly been told to stop. */
|
||
|
||
static int
|
||
proceed_after_attach_callback (struct thread_info *thread,
|
||
void *arg)
|
||
{
|
||
int pid = * (int *) arg;
|
||
|
||
if (ptid_get_pid (thread->ptid) == pid
|
||
&& !is_exited (thread->ptid)
|
||
&& !is_executing (thread->ptid)
|
||
&& !thread->stop_requested
|
||
&& thread->suspend.stop_signal == GDB_SIGNAL_0)
|
||
{
|
||
switch_to_thread (thread->ptid);
|
||
clear_proceed_status ();
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
static void
|
||
proceed_after_attach (int pid)
|
||
{
|
||
/* Don't error out if the current thread is running, because
|
||
there may be other stopped threads. */
|
||
struct cleanup *old_chain;
|
||
|
||
/* Backup current thread and selected frame. */
|
||
old_chain = make_cleanup_restore_current_thread ();
|
||
|
||
iterate_over_threads (proceed_after_attach_callback, &pid);
|
||
|
||
/* Restore selected ptid. */
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
/*
|
||
* TODO:
|
||
* Should save/restore the tty state since it might be that the
|
||
* program to be debugged was started on this tty and it wants
|
||
* the tty in some state other than what we want. If it's running
|
||
* on another terminal or without a terminal, then saving and
|
||
* restoring the tty state is a harmless no-op.
|
||
* This only needs to be done if we are attaching to a process.
|
||
*/
|
||
|
||
/* attach_command --
|
||
takes a program started up outside of gdb and ``attaches'' to it.
|
||
This stops it cold in its tracks and allows us to start debugging it.
|
||
and wait for the trace-trap that results from attaching. */
|
||
|
||
static void
|
||
attach_command_post_wait (char *args, int from_tty, int async_exec)
|
||
{
|
||
char *exec_file;
|
||
char *full_exec_path = NULL;
|
||
struct inferior *inferior;
|
||
|
||
inferior = current_inferior ();
|
||
inferior->control.stop_soon = NO_STOP_QUIETLY;
|
||
|
||
/* If no exec file is yet known, try to determine it from the
|
||
process itself. */
|
||
exec_file = (char *) get_exec_file (0);
|
||
if (!exec_file)
|
||
{
|
||
exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid));
|
||
if (exec_file)
|
||
{
|
||
/* It's possible we don't have a full path, but rather just a
|
||
filename. Some targets, such as HP-UX, don't provide the
|
||
full path, sigh.
|
||
|
||
Attempt to qualify the filename against the source path.
|
||
(If that fails, we'll just fall back on the original
|
||
filename. Not much more we can do...) */
|
||
|
||
if (!source_full_path_of (exec_file, &full_exec_path))
|
||
full_exec_path = xstrdup (exec_file);
|
||
|
||
exec_file_attach (full_exec_path, from_tty);
|
||
symbol_file_add_main (full_exec_path, from_tty);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
reopen_exec_file ();
|
||
reread_symbols ();
|
||
}
|
||
|
||
/* Take any necessary post-attaching actions for this platform. */
|
||
target_post_attach (PIDGET (inferior_ptid));
|
||
|
||
post_create_inferior (¤t_target, from_tty);
|
||
|
||
/* Install inferior's terminal modes. */
|
||
target_terminal_inferior ();
|
||
|
||
if (async_exec)
|
||
{
|
||
/* The user requested an `attach&', so be sure to leave threads
|
||
that didn't get a signal running. */
|
||
|
||
/* Immediatelly resume all suspended threads of this inferior,
|
||
and this inferior only. This should have no effect on
|
||
already running threads. If a thread has been stopped with a
|
||
signal, leave it be. */
|
||
if (non_stop)
|
||
proceed_after_attach (inferior->pid);
|
||
else
|
||
{
|
||
if (inferior_thread ()->suspend.stop_signal == GDB_SIGNAL_0)
|
||
{
|
||
clear_proceed_status ();
|
||
proceed ((CORE_ADDR) -1, GDB_SIGNAL_DEFAULT, 0);
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* The user requested a plain `attach', so be sure to leave
|
||
the inferior stopped. */
|
||
|
||
if (target_can_async_p ())
|
||
async_enable_stdin ();
|
||
|
||
/* At least the current thread is already stopped. */
|
||
|
||
/* In all-stop, by definition, all threads have to be already
|
||
stopped at this point. In non-stop, however, although the
|
||
selected thread is stopped, others may still be executing.
|
||
Be sure to explicitly stop all threads of the process. This
|
||
should have no effect on already stopped threads. */
|
||
if (non_stop)
|
||
target_stop (pid_to_ptid (inferior->pid));
|
||
|
||
/* Tell the user/frontend where we're stopped. */
|
||
normal_stop ();
|
||
if (deprecated_attach_hook)
|
||
deprecated_attach_hook ();
|
||
}
|
||
}
|
||
|
||
struct attach_command_continuation_args
|
||
{
|
||
char *args;
|
||
int from_tty;
|
||
int async_exec;
|
||
};
|
||
|
||
static void
|
||
attach_command_continuation (void *args, int err)
|
||
{
|
||
struct attach_command_continuation_args *a = args;
|
||
|
||
if (err)
|
||
return;
|
||
|
||
attach_command_post_wait (a->args, a->from_tty, a->async_exec);
|
||
}
|
||
|
||
static void
|
||
attach_command_continuation_free_args (void *args)
|
||
{
|
||
struct attach_command_continuation_args *a = args;
|
||
|
||
xfree (a->args);
|
||
xfree (a);
|
||
}
|
||
|
||
void
|
||
attach_command (char *args, int from_tty)
|
||
{
|
||
int async_exec = 0;
|
||
struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
|
||
|
||
dont_repeat (); /* Not for the faint of heart */
|
||
|
||
if (gdbarch_has_global_solist (target_gdbarch))
|
||
/* Don't complain if all processes share the same symbol
|
||
space. */
|
||
;
|
||
else if (target_has_execution)
|
||
{
|
||
if (query (_("A program is being debugged already. Kill it? ")))
|
||
target_kill ();
|
||
else
|
||
error (_("Not killed."));
|
||
}
|
||
|
||
/* Clean up any leftovers from other runs. Some other things from
|
||
this function should probably be moved into target_pre_inferior. */
|
||
target_pre_inferior (from_tty);
|
||
|
||
if (non_stop && !target_supports_non_stop ())
|
||
error (_("Cannot attach to this target in non-stop mode"));
|
||
|
||
if (args)
|
||
{
|
||
async_exec = strip_bg_char (&args);
|
||
|
||
/* If we get a request for running in the bg but the target
|
||
doesn't support it, error out. */
|
||
if (async_exec && !target_can_async_p ())
|
||
error (_("Asynchronous execution not supported on this target."));
|
||
}
|
||
|
||
/* If we don't get a request of running in the bg, then we need
|
||
to simulate synchronous (fg) execution. */
|
||
if (!async_exec && target_can_async_p ())
|
||
{
|
||
/* Simulate synchronous execution. */
|
||
async_disable_stdin ();
|
||
make_cleanup ((make_cleanup_ftype *)async_enable_stdin, NULL);
|
||
}
|
||
|
||
target_attach (args, from_tty);
|
||
|
||
/* Set up the "saved terminal modes" of the inferior
|
||
based on what modes we are starting it with. */
|
||
target_terminal_init ();
|
||
|
||
/* Set up execution context to know that we should return from
|
||
wait_for_inferior as soon as the target reports a stop. */
|
||
init_wait_for_inferior ();
|
||
clear_proceed_status ();
|
||
|
||
if (non_stop)
|
||
{
|
||
/* If we find that the current thread isn't stopped, explicitly
|
||
do so now, because we're going to install breakpoints and
|
||
poke at memory. */
|
||
|
||
if (async_exec)
|
||
/* The user requested an `attach&'; stop just one thread. */
|
||
target_stop (inferior_ptid);
|
||
else
|
||
/* The user requested an `attach', so stop all threads of this
|
||
inferior. */
|
||
target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid)));
|
||
}
|
||
|
||
/* Some system don't generate traps when attaching to inferior.
|
||
E.g. Mach 3 or GNU hurd. */
|
||
if (!target_attach_no_wait)
|
||
{
|
||
struct inferior *inferior = current_inferior ();
|
||
|
||
/* Careful here. See comments in inferior.h. Basically some
|
||
OSes don't ignore SIGSTOPs on continue requests anymore. We
|
||
need a way for handle_inferior_event to reset the stop_signal
|
||
variable after an attach, and this is what
|
||
STOP_QUIETLY_NO_SIGSTOP is for. */
|
||
inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP;
|
||
|
||
if (target_can_async_p ())
|
||
{
|
||
/* sync_execution mode. Wait for stop. */
|
||
struct attach_command_continuation_args *a;
|
||
|
||
a = xmalloc (sizeof (*a));
|
||
a->args = xstrdup (args);
|
||
a->from_tty = from_tty;
|
||
a->async_exec = async_exec;
|
||
add_inferior_continuation (attach_command_continuation, a,
|
||
attach_command_continuation_free_args);
|
||
discard_cleanups (back_to);
|
||
return;
|
||
}
|
||
|
||
wait_for_inferior ();
|
||
}
|
||
|
||
attach_command_post_wait (args, from_tty, async_exec);
|
||
discard_cleanups (back_to);
|
||
}
|
||
|
||
/* We had just found out that the target was already attached to an
|
||
inferior. PTID points at a thread of this new inferior, that is
|
||
the most likely to be stopped right now, but not necessarily so.
|
||
The new inferior is assumed to be already added to the inferior
|
||
list at this point. If LEAVE_RUNNING, then leave the threads of
|
||
this inferior running, except those we've explicitly seen reported
|
||
as stopped. */
|
||
|
||
void
|
||
notice_new_inferior (ptid_t ptid, int leave_running, int from_tty)
|
||
{
|
||
struct cleanup* old_chain;
|
||
int async_exec;
|
||
|
||
old_chain = make_cleanup (null_cleanup, NULL);
|
||
|
||
/* If in non-stop, leave threads as running as they were. If
|
||
they're stopped for some reason other than us telling it to, the
|
||
target reports a signal != GDB_SIGNAL_0. We don't try to
|
||
resume threads with such a stop signal. */
|
||
async_exec = non_stop;
|
||
|
||
if (!ptid_equal (inferior_ptid, null_ptid))
|
||
make_cleanup_restore_current_thread ();
|
||
|
||
switch_to_thread (ptid);
|
||
|
||
/* When we "notice" a new inferior we need to do all the things we
|
||
would normally do if we had just attached to it. */
|
||
|
||
if (is_executing (inferior_ptid))
|
||
{
|
||
struct inferior *inferior = current_inferior ();
|
||
|
||
/* We're going to install breakpoints, and poke at memory,
|
||
ensure that the inferior is stopped for a moment while we do
|
||
that. */
|
||
target_stop (inferior_ptid);
|
||
|
||
inferior->control.stop_soon = STOP_QUIETLY_REMOTE;
|
||
|
||
/* Wait for stop before proceeding. */
|
||
if (target_can_async_p ())
|
||
{
|
||
struct attach_command_continuation_args *a;
|
||
|
||
a = xmalloc (sizeof (*a));
|
||
a->args = xstrdup ("");
|
||
a->from_tty = from_tty;
|
||
a->async_exec = async_exec;
|
||
add_inferior_continuation (attach_command_continuation, a,
|
||
attach_command_continuation_free_args);
|
||
|
||
do_cleanups (old_chain);
|
||
return;
|
||
}
|
||
else
|
||
wait_for_inferior ();
|
||
}
|
||
|
||
async_exec = leave_running;
|
||
attach_command_post_wait ("" /* args */, from_tty, async_exec);
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
/*
|
||
* detach_command --
|
||
* takes a program previously attached to and detaches it.
|
||
* The program resumes execution and will no longer stop
|
||
* on signals, etc. We better not have left any breakpoints
|
||
* in the program or it'll die when it hits one. For this
|
||
* to work, it may be necessary for the process to have been
|
||
* previously attached. It *might* work if the program was
|
||
* started via the normal ptrace (PTRACE_TRACEME).
|
||
*/
|
||
|
||
void
|
||
detach_command (char *args, int from_tty)
|
||
{
|
||
dont_repeat (); /* Not for the faint of heart. */
|
||
|
||
if (ptid_equal (inferior_ptid, null_ptid))
|
||
error (_("The program is not being run."));
|
||
|
||
disconnect_tracing (from_tty);
|
||
|
||
target_detach (args, from_tty);
|
||
|
||
/* If the solist is global across inferiors, don't clear it when we
|
||
detach from a single inferior. */
|
||
if (!gdbarch_has_global_solist (target_gdbarch))
|
||
no_shared_libraries (NULL, from_tty);
|
||
|
||
/* If we still have inferiors to debug, then don't mess with their
|
||
threads. */
|
||
if (!have_inferiors ())
|
||
init_thread_list ();
|
||
|
||
if (deprecated_detach_hook)
|
||
deprecated_detach_hook ();
|
||
}
|
||
|
||
/* Disconnect from the current target without resuming it (leaving it
|
||
waiting for a debugger).
|
||
|
||
We'd better not have left any breakpoints in the program or the
|
||
next debugger will get confused. Currently only supported for some
|
||
remote targets, since the normal attach mechanisms don't work on
|
||
stopped processes on some native platforms (e.g. GNU/Linux). */
|
||
|
||
static void
|
||
disconnect_command (char *args, int from_tty)
|
||
{
|
||
dont_repeat (); /* Not for the faint of heart. */
|
||
disconnect_tracing (from_tty);
|
||
target_disconnect (args, from_tty);
|
||
no_shared_libraries (NULL, from_tty);
|
||
init_thread_list ();
|
||
if (deprecated_detach_hook)
|
||
deprecated_detach_hook ();
|
||
}
|
||
|
||
void
|
||
interrupt_target_1 (int all_threads)
|
||
{
|
||
ptid_t ptid;
|
||
|
||
if (all_threads)
|
||
ptid = minus_one_ptid;
|
||
else
|
||
ptid = inferior_ptid;
|
||
target_stop (ptid);
|
||
|
||
/* Tag the thread as having been explicitly requested to stop, so
|
||
other parts of gdb know not to resume this thread automatically,
|
||
if it was stopped due to an internal event. Limit this to
|
||
non-stop mode, as when debugging a multi-threaded application in
|
||
all-stop mode, we will only get one stop event --- it's undefined
|
||
which thread will report the event. */
|
||
if (non_stop)
|
||
set_stop_requested (ptid, 1);
|
||
}
|
||
|
||
/* Stop the execution of the target while running in async mode, in
|
||
the backgound. In all-stop, stop the whole process. In non-stop
|
||
mode, stop the current thread only by default, or stop all threads
|
||
if the `-a' switch is used. */
|
||
|
||
/* interrupt [-a] */
|
||
void
|
||
interrupt_target_command (char *args, int from_tty)
|
||
{
|
||
if (target_can_async_p ())
|
||
{
|
||
int all_threads = 0;
|
||
|
||
dont_repeat (); /* Not for the faint of heart. */
|
||
|
||
if (args != NULL
|
||
&& strncmp (args, "-a", sizeof ("-a") - 1) == 0)
|
||
all_threads = 1;
|
||
|
||
if (!non_stop && all_threads)
|
||
error (_("-a is meaningless in all-stop mode."));
|
||
|
||
interrupt_target_1 (all_threads);
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_float_info (struct ui_file *file,
|
||
struct frame_info *frame, const char *args)
|
||
{
|
||
struct gdbarch *gdbarch = get_frame_arch (frame);
|
||
|
||
if (gdbarch_print_float_info_p (gdbarch))
|
||
gdbarch_print_float_info (gdbarch, file, frame, args);
|
||
else
|
||
{
|
||
int regnum;
|
||
int printed_something = 0;
|
||
|
||
for (regnum = 0;
|
||
regnum < gdbarch_num_regs (gdbarch)
|
||
+ gdbarch_num_pseudo_regs (gdbarch);
|
||
regnum++)
|
||
{
|
||
if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup))
|
||
{
|
||
printed_something = 1;
|
||
gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1);
|
||
}
|
||
}
|
||
if (!printed_something)
|
||
fprintf_filtered (file, "No floating-point info "
|
||
"available for this processor.\n");
|
||
}
|
||
}
|
||
|
||
static void
|
||
float_info (char *args, int from_tty)
|
||
{
|
||
if (!target_has_registers)
|
||
error (_("The program has no registers now."));
|
||
|
||
print_float_info (gdb_stdout, get_selected_frame (NULL), args);
|
||
}
|
||
|
||
static void
|
||
unset_command (char *args, int from_tty)
|
||
{
|
||
printf_filtered (_("\"unset\" must be followed by the "
|
||
"name of an unset subcommand.\n"));
|
||
help_list (unsetlist, "unset ", -1, gdb_stdout);
|
||
}
|
||
|
||
/* Implement `info proc' family of commands. */
|
||
|
||
static void
|
||
info_proc_cmd_1 (char *args, enum info_proc_what what, int from_tty)
|
||
{
|
||
struct gdbarch *gdbarch = get_current_arch ();
|
||
|
||
if (gdbarch_info_proc_p (gdbarch))
|
||
gdbarch_info_proc (gdbarch, args, what);
|
||
else
|
||
target_info_proc (args, what);
|
||
}
|
||
|
||
/* Implement `info proc' when given without any futher parameters. */
|
||
|
||
static void
|
||
info_proc_cmd (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_MINIMAL, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc mappings'. */
|
||
|
||
static void
|
||
info_proc_cmd_mappings (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_MAPPINGS, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc stat'. */
|
||
|
||
static void
|
||
info_proc_cmd_stat (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_STAT, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc status'. */
|
||
|
||
static void
|
||
info_proc_cmd_status (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_STATUS, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc cwd'. */
|
||
|
||
static void
|
||
info_proc_cmd_cwd (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_CWD, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc cmdline'. */
|
||
|
||
static void
|
||
info_proc_cmd_cmdline (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_CMDLINE, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc exe'. */
|
||
|
||
static void
|
||
info_proc_cmd_exe (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_EXE, from_tty);
|
||
}
|
||
|
||
/* Implement `info proc all'. */
|
||
|
||
static void
|
||
info_proc_cmd_all (char *args, int from_tty)
|
||
{
|
||
info_proc_cmd_1 (args, IP_ALL, from_tty);
|
||
}
|
||
|
||
void
|
||
_initialize_infcmd (void)
|
||
{
|
||
static struct cmd_list_element *info_proc_cmdlist;
|
||
struct cmd_list_element *c = NULL;
|
||
|
||
/* Add the filename of the terminal connected to inferior I/O. */
|
||
add_setshow_filename_cmd ("inferior-tty", class_run,
|
||
&inferior_io_terminal_scratch, _("\
|
||
Set terminal for future runs of program being debugged."), _("\
|
||
Show terminal for future runs of program being debugged."), _("\
|
||
Usage: set inferior-tty /dev/pts/1"),
|
||
set_inferior_tty_command,
|
||
show_inferior_tty_command,
|
||
&setlist, &showlist);
|
||
add_com_alias ("tty", "set inferior-tty", class_alias, 0);
|
||
|
||
add_setshow_optional_filename_cmd ("args", class_run,
|
||
&inferior_args_scratch, _("\
|
||
Set argument list to give program being debugged when it is started."), _("\
|
||
Show argument list to give program being debugged when it is started."), _("\
|
||
Follow this command with any number of args, to be passed to the program."),
|
||
set_args_command,
|
||
show_args_command,
|
||
&setlist, &showlist);
|
||
|
||
c = add_cmd ("environment", no_class, environment_info, _("\
|
||
The environment to give the program, or one variable's value.\n\
|
||
With an argument VAR, prints the value of environment variable VAR to\n\
|
||
give the program being debugged. With no arguments, prints the entire\n\
|
||
environment to be given to the program."), &showlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
add_prefix_cmd ("unset", no_class, unset_command,
|
||
_("Complement to certain \"set\" commands."),
|
||
&unsetlist, "unset ", 0, &cmdlist);
|
||
|
||
c = add_cmd ("environment", class_run, unset_environment_command, _("\
|
||
Cancel environment variable VAR for the program.\n\
|
||
This does not affect the program until the next \"run\" command."),
|
||
&unsetlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
c = add_cmd ("environment", class_run, set_environment_command, _("\
|
||
Set environment variable value to give the program.\n\
|
||
Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\
|
||
VALUES of environment variables are uninterpreted strings.\n\
|
||
This does not affect the program until the next \"run\" command."),
|
||
&setlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
c = add_com ("path", class_files, path_command, _("\
|
||
Add directory DIR(s) to beginning of search path for object files.\n\
|
||
$cwd in the path means the current working directory.\n\
|
||
This path is equivalent to the $PATH shell variable. It is a list of\n\
|
||
directories, separated by colons. These directories are searched to find\n\
|
||
fully linked executable files and separately compiled object files as \
|
||
needed."));
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
c = add_cmd ("paths", no_class, path_info, _("\
|
||
Current search path for finding object files.\n\
|
||
$cwd in the path means the current working directory.\n\
|
||
This path is equivalent to the $PATH shell variable. It is a list of\n\
|
||
directories, separated by colons. These directories are searched to find\n\
|
||
fully linked executable files and separately compiled object files as \
|
||
needed."),
|
||
&showlist);
|
||
set_cmd_completer (c, noop_completer);
|
||
|
||
add_prefix_cmd ("kill", class_run, kill_command,
|
||
_("Kill execution of program being debugged."),
|
||
&killlist, "kill ", 0, &cmdlist);
|
||
|
||
add_com ("attach", class_run, attach_command, _("\
|
||
Attach to a process or file outside of GDB.\n\
|
||
This command attaches to another target, of the same type as your last\n\
|
||
\"target\" command (\"info files\" will show your target stack).\n\
|
||
The command may take as argument a process id or a device file.\n\
|
||
For a process id, you must have permission to send the process a signal,\n\
|
||
and it must have the same effective uid as the debugger.\n\
|
||
When using \"attach\" with a process id, the debugger finds the\n\
|
||
program running in the process, looking first in the current working\n\
|
||
directory, or (if not found there) using the source file search path\n\
|
||
(see the \"directory\" command). You can also use the \"file\" command\n\
|
||
to specify the program, and to load its symbol table."));
|
||
|
||
add_prefix_cmd ("detach", class_run, detach_command, _("\
|
||
Detach a process or file previously attached.\n\
|
||
If a process, it is no longer traced, and it continues its execution. If\n\
|
||
you were debugging a file, the file is closed and gdb no longer accesses it."),
|
||
&detachlist, "detach ", 0, &cmdlist);
|
||
|
||
add_com ("disconnect", class_run, disconnect_command, _("\
|
||
Disconnect from a target.\n\
|
||
The target will wait for another debugger to connect. Not available for\n\
|
||
all targets."));
|
||
|
||
add_com ("signal", class_run, signal_command, _("\
|
||
Continue program giving it signal specified by the argument.\n\
|
||
An argument of \"0\" means continue program without giving it a signal."));
|
||
|
||
add_com ("stepi", class_run, stepi_command, _("\
|
||
Step one instruction exactly.\n\
|
||
Argument N means do this N times (or till program stops for another \
|
||
reason)."));
|
||
add_com_alias ("si", "stepi", class_alias, 0);
|
||
|
||
add_com ("nexti", class_run, nexti_command, _("\
|
||
Step one instruction, but proceed through subroutine calls.\n\
|
||
Argument N means do this N times (or till program stops for another \
|
||
reason)."));
|
||
add_com_alias ("ni", "nexti", class_alias, 0);
|
||
|
||
add_com ("finish", class_run, finish_command, _("\
|
||
Execute until selected stack frame returns.\n\
|
||
Upon return, the value returned is printed and put in the value history."));
|
||
add_com_alias ("fin", "finish", class_run, 1);
|
||
|
||
add_com ("next", class_run, next_command, _("\
|
||
Step program, proceeding through subroutine calls.\n\
|
||
Like the \"step\" command as long as subroutine calls do not happen;\n\
|
||
when they do, the call is treated as one instruction.\n\
|
||
Argument N means do this N times (or till program stops for another \
|
||
reason)."));
|
||
add_com_alias ("n", "next", class_run, 1);
|
||
if (xdb_commands)
|
||
add_com_alias ("S", "next", class_run, 1);
|
||
|
||
add_com ("step", class_run, step_command, _("\
|
||
Step program until it reaches a different source line.\n\
|
||
Argument N means do this N times (or till program stops for another \
|
||
reason)."));
|
||
add_com_alias ("s", "step", class_run, 1);
|
||
|
||
c = add_com ("until", class_run, until_command, _("\
|
||
Execute until the program reaches a source line greater than the current\n\
|
||
or a specified location (same args as break command) within the current \
|
||
frame."));
|
||
set_cmd_completer (c, location_completer);
|
||
add_com_alias ("u", "until", class_run, 1);
|
||
|
||
c = add_com ("advance", class_run, advance_command, _("\
|
||
Continue the program up to the given location (same form as args for break \
|
||
command).\n\
|
||
Execution will also stop upon exit from the current stack frame."));
|
||
set_cmd_completer (c, location_completer);
|
||
|
||
c = add_com ("jump", class_run, jump_command, _("\
|
||
Continue program being debugged at specified line or address.\n\
|
||
Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\
|
||
for an address to start at."));
|
||
set_cmd_completer (c, location_completer);
|
||
|
||
if (xdb_commands)
|
||
{
|
||
c = add_com ("go", class_run, go_command, _("\
|
||
Usage: go <location>\n\
|
||
Continue program being debugged, stopping at specified line or \n\
|
||
address.\n\
|
||
Give as argument either LINENUM or *ADDR, where ADDR is an \n\
|
||
expression for an address to start at.\n\
|
||
This command is a combination of tbreak and jump."));
|
||
set_cmd_completer (c, location_completer);
|
||
}
|
||
|
||
if (xdb_commands)
|
||
add_com_alias ("g", "go", class_run, 1);
|
||
|
||
add_com ("continue", class_run, continue_command, _("\
|
||
Continue program being debugged, after signal or breakpoint.\n\
|
||
If proceeding from breakpoint, a number N may be used as an argument,\n\
|
||
which means to set the ignore count of that breakpoint to N - 1 (so that\n\
|
||
the breakpoint won't break until the Nth time it is reached).\n\
|
||
\n\
|
||
If non-stop mode is enabled, continue only the current thread,\n\
|
||
otherwise all the threads in the program are continued. To \n\
|
||
continue all stopped threads in non-stop mode, use the -a option.\n\
|
||
Specifying -a and an ignore count simultaneously is an error."));
|
||
add_com_alias ("c", "cont", class_run, 1);
|
||
add_com_alias ("fg", "cont", class_run, 1);
|
||
|
||
c = add_com ("run", class_run, run_command, _("\
|
||
Start debugged program. You may specify arguments to give it.\n\
|
||
Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\
|
||
Input and output redirection with \">\", \"<\", or \">>\" are also \
|
||
allowed.\n\n\
|
||
With no arguments, uses arguments last specified (with \"run\" \
|
||
or \"set args\").\n\
|
||
To cancel previous arguments and run with no arguments,\n\
|
||
use \"set args\" without arguments."));
|
||
set_cmd_completer (c, filename_completer);
|
||
add_com_alias ("r", "run", class_run, 1);
|
||
if (xdb_commands)
|
||
add_com ("R", class_run, run_no_args_command,
|
||
_("Start debugged program with no arguments."));
|
||
|
||
c = add_com ("start", class_run, start_command, _("\
|
||
Run the debugged program until the beginning of the main procedure.\n\
|
||
You may specify arguments to give to your program, just as with the\n\
|
||
\"run\" command."));
|
||
set_cmd_completer (c, filename_completer);
|
||
|
||
add_com ("interrupt", class_run, interrupt_target_command,
|
||
_("Interrupt the execution of the debugged program.\n\
|
||
If non-stop mode is enabled, interrupt only the current thread,\n\
|
||
otherwise all the threads in the program are stopped. To \n\
|
||
interrupt all running threads in non-stop mode, use the -a option."));
|
||
|
||
add_info ("registers", nofp_registers_info, _("\
|
||
List of integer registers and their contents, for selected stack frame.\n\
|
||
Register name as argument means describe only that register."));
|
||
add_info_alias ("r", "registers", 1);
|
||
|
||
if (xdb_commands)
|
||
add_com ("lr", class_info, nofp_registers_info, _("\
|
||
List of integer registers and their contents, for selected stack frame.\n\
|
||
Register name as argument means describe only that register."));
|
||
add_info ("all-registers", all_registers_info, _("\
|
||
List of all registers and their contents, for selected stack frame.\n\
|
||
Register name as argument means describe only that register."));
|
||
|
||
add_info ("program", program_info,
|
||
_("Execution status of the program."));
|
||
|
||
add_info ("float", float_info,
|
||
_("Print the status of the floating point unit\n"));
|
||
|
||
add_info ("vector", vector_info,
|
||
_("Print the status of the vector unit\n"));
|
||
|
||
add_prefix_cmd ("proc", class_info, info_proc_cmd,
|
||
_("\
|
||
Show /proc process information about any running process.\n\
|
||
Specify any process id, or use the program being debugged by default."),
|
||
&info_proc_cmdlist, "info proc ",
|
||
1/*allow-unknown*/, &infolist);
|
||
|
||
add_cmd ("mappings", class_info, info_proc_cmd_mappings, _("\
|
||
List of mapped memory regions."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("stat", class_info, info_proc_cmd_stat, _("\
|
||
List process info from /proc/PID/stat."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("status", class_info, info_proc_cmd_status, _("\
|
||
List process info from /proc/PID/status."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("cwd", class_info, info_proc_cmd_cwd, _("\
|
||
List current working directory of the process."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("cmdline", class_info, info_proc_cmd_cmdline, _("\
|
||
List command line arguments of the process."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("exe", class_info, info_proc_cmd_exe, _("\
|
||
List absolute filename for executable of the process."),
|
||
&info_proc_cmdlist);
|
||
|
||
add_cmd ("all", class_info, info_proc_cmd_all, _("\
|
||
List all available /proc info."),
|
||
&info_proc_cmdlist);
|
||
}
|