1541 lines
43 KiB
C
1541 lines
43 KiB
C
/* Memory-access and commands for "inferior" process, for GDB.
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Copyright 1986, 87, 88, 89, 91, 92, 95, 96, 1998
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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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.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 "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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/* Functions exported for general use: */
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void nofp_registers_info PARAMS ((char *, int));
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void all_registers_info PARAMS ((char *, int));
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void registers_info PARAMS ((char *, int));
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/* Local functions: */
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void continue_command PARAMS ((char *, int));
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static void until_next_command PARAMS ((int));
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static void until_command PARAMS ((char *, int));
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static void path_info PARAMS ((char *, int));
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static void path_command PARAMS ((char *, int));
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static void unset_command PARAMS ((char *, int));
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static void float_info PARAMS ((char *, int));
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static void detach_command PARAMS ((char *, int));
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#if !defined (DO_REGISTERS_INFO)
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static void do_registers_info PARAMS ((int, int));
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#endif
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static void unset_environment_command PARAMS ((char *, int));
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static void set_environment_command PARAMS ((char *, int));
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static void environment_info PARAMS ((char *, int));
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static void program_info PARAMS ((char *, int));
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static void finish_command PARAMS ((char *, int));
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static void signal_command PARAMS ((char *, int));
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static void jump_command PARAMS ((char *, int));
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static void step_1 PARAMS ((int, int, char *));
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void nexti_command PARAMS ((char *, int));
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void stepi_command PARAMS ((char *, int));
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static void next_command PARAMS ((char *, int));
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static void step_command PARAMS ((char *, int));
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static void run_command PARAMS ((char *, int));
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void _initialize_infcmd PARAMS ((void));
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#define GO_USAGE "Usage: go <location>\n"
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#ifdef CALL_DUMMY_BREAKPOINT_OFFSET
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static void breakpoint_auto_delete_contents PARAMS ((PTR));
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#endif
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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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/* String containing arguments to give to the program, separated by spaces.
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Empty string (pointer to '\0') means no args. */
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static char *inferior_args;
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/* File name for default use for standard in/out in the inferior. */
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char *inferior_io_terminal;
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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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int inferior_pid;
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/* Last signal that the inferior received (why it stopped). */
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enum target_signal stop_signal;
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/* Address at which inferior stopped. */
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CORE_ADDR stop_pc;
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/* Chain containing status of breakpoint(s) that we have stopped at. */
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bpstat stop_bpstat;
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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 a step command. */
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int stop_step;
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/* Nonzero if stopped due to completion of a stack dummy routine. */
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int 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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/* Range to single step within.
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If this is nonzero, respond to a single-step signal
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by continuing to step if the pc is in this range. */
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CORE_ADDR step_range_start; /* Inclusive */
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CORE_ADDR step_range_end; /* Exclusive */
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/* Stack frame address as of when stepping command was issued.
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This is how we know when we step into a subroutine call,
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and how to set the frame for the breakpoint used to step out. */
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CORE_ADDR step_frame_address;
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/* Our notion of the current stack pointer. */
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CORE_ADDR step_sp;
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/* 1 means step over all subroutine calls.
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0 means don't step over calls (used by stepi).
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-1 means step over calls to undebuggable functions. */
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int step_over_calls;
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/* If stepping, nonzero means step count is > 1
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so don't print frame next time inferior stops
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if it stops due to stepping. */
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int step_multi;
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/* Environment to use for running inferior,
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in format described in environ.h. */
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struct environ *inferior_environ;
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/* ARGSUSED */
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void
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tty_command (file, from_tty)
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char *file;
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int from_tty;
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{
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if (file == 0)
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error_no_arg ("terminal name for running target process");
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inferior_io_terminal = savestring (file, strlen (file));
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}
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static void
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run_command (args, from_tty)
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char *args;
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int from_tty;
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{
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char *exec_file;
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dont_repeat ();
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if (inferior_pid != 0 && target_has_execution)
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{
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if (
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!query ("The program being debugged has been started already.\n\
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Start it from the beginning? "))
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error ("Program not restarted.");
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target_kill ();
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#if defined(SOLIB_RESTART)
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SOLIB_RESTART ();
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#endif
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init_wait_for_inferior ();
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}
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clear_breakpoint_hit_counts ();
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exec_file = (char *) get_exec_file (0);
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/* Purge old solib objfiles. */
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objfile_purge_solibs ();
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do_run_cleanups (NULL);
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/* The exec file is re-read every time we do a generic_mourn_inferior, so
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we just have to worry about the symbol file. */
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reread_symbols ();
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/* We keep symbols from add-symbol-file, on the grounds that the
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user might want to add some symbols before running the program
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(right?). But sometimes (dynamic loading where the user manually
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introduces the new symbols with add-symbol-file), the code which
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the symbols describe does not persist between runs. Currently
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the user has to manually nuke all symbols between runs if they
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want them to go away (PR 2207). This is probably reasonable. */
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if (args)
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{
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char *cmd;
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cmd = concat ("set args ", args, NULL);
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make_cleanup (free, cmd);
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execute_command (cmd, from_tty);
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}
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if (from_tty)
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{
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puts_filtered("Starting program: ");
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if (exec_file)
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puts_filtered(exec_file);
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puts_filtered(" ");
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puts_filtered(inferior_args);
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puts_filtered("\n");
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gdb_flush (gdb_stdout);
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}
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target_create_inferior (exec_file, inferior_args,
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environ_vector (inferior_environ));
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}
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static void
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run_no_args_command (args, from_tty)
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char *args;
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int from_tty;
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{
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execute_command("set args", from_tty);
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run_command((char *)NULL, from_tty);
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}
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void
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continue_command (proc_count_exp, from_tty)
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char *proc_count_exp;
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int from_tty;
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{
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ERROR_NO_INFERIOR;
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/* If have argument, set proceed count of breakpoint we stopped at. */
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if (proc_count_exp != NULL)
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{
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bpstat bs = stop_bpstat;
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int num = bpstat_num (&bs);
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if (num == 0 && from_tty)
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{
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printf_filtered
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("Not stopped at any breakpoint; argument ignored.\n");
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}
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while (num != 0)
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{
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set_ignore_count (num,
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parse_and_eval_address (proc_count_exp) - 1,
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from_tty);
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/* set_ignore_count prints a message ending with a period.
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So print two spaces before "Continuing.". */
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if (from_tty)
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printf_filtered (" ");
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num = bpstat_num (&bs);
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}
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}
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if (from_tty)
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printf_filtered ("Continuing.\n");
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clear_proceed_status ();
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proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
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}
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/* Step until outside of current statement. */
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/* ARGSUSED */
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static void
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step_command (count_string, from_tty)
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char *count_string;
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int from_tty;
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{
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step_1 (0, 0, count_string);
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}
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/* Likewise, but skip over subroutine calls as if single instructions. */
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/* ARGSUSED */
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static void
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next_command (count_string, from_tty)
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char *count_string;
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int from_tty;
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{
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step_1 (1, 0, count_string);
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}
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/* Likewise, but step only one instruction. */
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/* ARGSUSED */
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void
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stepi_command (count_string, from_tty)
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char *count_string;
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int from_tty;
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{
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step_1 (0, 1, count_string);
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}
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/* ARGSUSED */
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void
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nexti_command (count_string, from_tty)
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char *count_string;
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int from_tty;
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{
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step_1 (1, 1, count_string);
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}
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static void
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step_1 (skip_subroutines, single_inst, count_string)
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int skip_subroutines;
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int single_inst;
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char *count_string;
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{
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register int count = 1;
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struct frame_info *frame;
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struct cleanup *cleanups = 0;
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ERROR_NO_INFERIOR;
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count = count_string ? parse_and_eval_address (count_string) : 1;
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if (!single_inst || skip_subroutines) /* leave si command alone */
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{
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enable_longjmp_breakpoint();
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cleanups = make_cleanup ((make_cleanup_func) disable_longjmp_breakpoint,
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0);
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}
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for (; count > 0; count--)
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{
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clear_proceed_status ();
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frame = get_current_frame ();
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if (!frame) /* Avoid coredump here. Why tho? */
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error ("No current frame");
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step_frame_address = FRAME_FP (frame);
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step_sp = read_sp ();
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if (! single_inst)
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{
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find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end);
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if (step_range_end == 0)
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{
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char *name;
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if (find_pc_partial_function (stop_pc, &name, &step_range_start,
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&step_range_end) == 0)
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error ("Cannot find bounds of current function");
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target_terminal_ours ();
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printf_filtered ("\
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Single stepping until exit from function %s, \n\
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which has no line number information.\n", name);
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}
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}
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else
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{
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/* Say we are stepping, but stop after one insn whatever it does. */
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step_range_start = step_range_end = 1;
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if (!skip_subroutines)
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/* It is stepi.
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Don't step over function calls, not even to functions lacking
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line numbers. */
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step_over_calls = 0;
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}
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if (skip_subroutines)
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step_over_calls = 1;
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step_multi = (count > 1);
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proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
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if (! stop_step)
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break;
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/* FIXME: On nexti, this may have already been done (when we hit the
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step resume break, I think). Probably this should be moved to
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wait_for_inferior (near the top). */
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#if defined (SHIFT_INST_REGS)
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SHIFT_INST_REGS();
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#endif
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}
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if (!single_inst || skip_subroutines)
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do_cleanups(cleanups);
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}
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/* Continue program at specified address. */
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static void
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jump_command (arg, from_tty)
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char *arg;
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int from_tty;
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{
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register CORE_ADDR addr;
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struct symtabs_and_lines sals;
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struct symtab_and_line sal;
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struct symbol *fn;
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struct symbol *sfn;
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ERROR_NO_INFERIOR;
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if (!arg)
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error_no_arg ("starting address");
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sals = decode_line_spec_1 (arg, 1);
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if (sals.nelts != 1)
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{
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error ("Unreasonable jump request");
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}
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sal = sals.sals[0];
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free ((PTR)sals.sals);
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if (sal.symtab == 0 && sal.pc == 0)
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error ("No source file has been specified.");
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resolve_sal_pc (&sal); /* May error out */
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||
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/* See if we are trying to jump to another function. */
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||
fn = get_frame_function (get_current_frame ());
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sfn = find_pc_function (sal.pc);
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||
if (fn != NULL && sfn != fn)
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||
{
|
||
if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line,
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SYMBOL_SOURCE_NAME (fn)))
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||
{
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||
error ("Not confirmed.");
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/* NOTREACHED */
|
||
}
|
||
}
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||
|
||
if (sfn != NULL)
|
||
{
|
||
fixup_symbol_section (sfn, 0);
|
||
if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) &&
|
||
!section_is_mapped (SYMBOL_BFD_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 ");
|
||
print_address_numeric (addr, 1, gdb_stdout);
|
||
printf_filtered (".\n");
|
||
}
|
||
|
||
clear_proceed_status ();
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||
proceed (addr, TARGET_SIGNAL_0, 0);
|
||
}
|
||
|
||
|
||
/* Go to line or address in current procedure */
|
||
static void
|
||
go_command(line_no, from_tty)
|
||
char *line_no;
|
||
int from_tty;
|
||
{
|
||
if (line_no == (char *)NULL || !*line_no)
|
||
printf_filtered(GO_USAGE);
|
||
else
|
||
{
|
||
tbreak_command(line_no, from_tty);
|
||
jump_command(line_no, from_tty);
|
||
}
|
||
}
|
||
|
||
|
||
/* Continue program giving it specified signal. */
|
||
|
||
static void
|
||
signal_command (signum_exp, from_tty)
|
||
char *signum_exp;
|
||
int from_tty;
|
||
{
|
||
enum target_signal oursig;
|
||
|
||
dont_repeat (); /* Too dangerous. */
|
||
ERROR_NO_INFERIOR;
|
||
|
||
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 = target_signal_from_name (signum_exp);
|
||
|
||
if (oursig == TARGET_SIGNAL_UNKNOWN)
|
||
{
|
||
/* No, try numeric. */
|
||
int num = parse_and_eval_address (signum_exp);
|
||
|
||
if (num == 0)
|
||
oursig = TARGET_SIGNAL_0;
|
||
else
|
||
oursig = target_signal_from_command (num);
|
||
}
|
||
|
||
if (from_tty)
|
||
{
|
||
if (oursig == TARGET_SIGNAL_0)
|
||
printf_filtered ("Continuing with no signal.\n");
|
||
else
|
||
printf_filtered ("Continuing with signal %s.\n",
|
||
target_signal_to_name (oursig));
|
||
}
|
||
|
||
clear_proceed_status ();
|
||
/* "signal 0" should not get stuck if we are stopped at a breakpoint.
|
||
FIXME: Neither should "signal foo" but when I tried passing
|
||
(CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't
|
||
tried to track down yet. */
|
||
proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0);
|
||
}
|
||
|
||
/* Call breakpoint_auto_delete on the current contents of the bpstat
|
||
pointed to by arg (which is really a bpstat *). */
|
||
|
||
#ifdef CALL_DUMMY_BREAKPOINT_OFFSET
|
||
|
||
static void
|
||
breakpoint_auto_delete_contents (arg)
|
||
PTR arg;
|
||
{
|
||
breakpoint_auto_delete (*(bpstat *)arg);
|
||
}
|
||
|
||
#endif /* CALL_DUMMY_BREAKPOINT_OFFSET */
|
||
|
||
/* Execute a "stack dummy", a piece of code stored in the stack
|
||
by the debugger to be executed in the inferior.
|
||
|
||
To call: first, do PUSH_DUMMY_FRAME.
|
||
Then push the contents of the dummy. It should end with a breakpoint insn.
|
||
Then call here, passing address at which to start the dummy.
|
||
|
||
The contents of all registers are saved before the dummy frame is popped
|
||
and copied into the buffer BUFFER.
|
||
|
||
The dummy's frame is automatically popped whenever that break is hit.
|
||
If that is the first time the program stops, run_stack_dummy
|
||
returns to its caller with that frame already gone and returns 0.
|
||
Otherwise, run_stack-dummy returns 1 (the frame will eventually be popped
|
||
when we do hit that breakpoint). */
|
||
|
||
/* DEBUG HOOK: 4 => return instead of letting the stack dummy run. */
|
||
|
||
static int stack_dummy_testing = 0;
|
||
|
||
int
|
||
run_stack_dummy (addr, buffer)
|
||
CORE_ADDR addr;
|
||
char buffer[REGISTER_BYTES];
|
||
{
|
||
struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0);
|
||
|
||
/* Now proceed, having reached the desired place. */
|
||
clear_proceed_status ();
|
||
if (stack_dummy_testing & 4)
|
||
{
|
||
POP_FRAME;
|
||
return(0);
|
||
}
|
||
#ifdef CALL_DUMMY_BREAKPOINT_OFFSET
|
||
{
|
||
struct breakpoint *bpt;
|
||
struct symtab_and_line sal;
|
||
|
||
INIT_SAL (&sal); /* initialize to zeroes */
|
||
#if CALL_DUMMY_LOCATION != AT_ENTRY_POINT
|
||
sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET;
|
||
#else
|
||
sal.pc = CALL_DUMMY_ADDRESS ();
|
||
#endif
|
||
sal.section = find_pc_overlay (sal.pc);
|
||
|
||
/* Set up a FRAME for the dummy frame so we can pass it to
|
||
set_momentary_breakpoint. We need to give the breakpoint a
|
||
frame in case there is only one copy of the dummy (e.g.
|
||
CALL_DUMMY_LOCATION == AFTER_TEXT_END). */
|
||
flush_cached_frames ();
|
||
set_current_frame (create_new_frame (read_fp (), sal.pc));
|
||
|
||
/* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put
|
||
a breakpoint instruction. If not, the call dummy already has the
|
||
breakpoint instruction in it.
|
||
|
||
addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET,
|
||
so we need to subtract the CALL_DUMMY_START_OFFSET. */
|
||
bpt = set_momentary_breakpoint (sal,
|
||
get_current_frame (),
|
||
bp_call_dummy);
|
||
bpt->disposition = del;
|
||
|
||
/* If all error()s out of proceed ended up calling normal_stop (and
|
||
perhaps they should; it already does in the special case of error
|
||
out of resume()), then we wouldn't need this. */
|
||
make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat);
|
||
}
|
||
#endif /* CALL_DUMMY_BREAKPOINT_OFFSET. */
|
||
|
||
disable_watchpoints_before_interactive_call_start ();
|
||
proceed_to_finish = 1; /* We want stop_registers, please... */
|
||
proceed (addr, TARGET_SIGNAL_0, 0);
|
||
enable_watchpoints_after_interactive_call_stop ();
|
||
|
||
discard_cleanups (old_cleanups);
|
||
|
||
if (!stop_stack_dummy)
|
||
return 1;
|
||
|
||
/* On return, the stack dummy has been popped already. */
|
||
|
||
memcpy (buffer, stop_registers, sizeof stop_registers);
|
||
return 0;
|
||
}
|
||
|
||
/* 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. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
until_next_command (from_tty)
|
||
int from_tty;
|
||
{
|
||
struct frame_info *frame;
|
||
CORE_ADDR pc;
|
||
struct symbol *func;
|
||
struct symtab_and_line sal;
|
||
|
||
clear_proceed_status ();
|
||
|
||
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 = read_pc ();
|
||
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.");
|
||
|
||
step_range_start = SYMBOL_VALUE_ADDRESS (msymbol);
|
||
step_range_end = pc;
|
||
}
|
||
else
|
||
{
|
||
sal = find_pc_line (pc, 0);
|
||
|
||
step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func));
|
||
step_range_end = sal.end;
|
||
}
|
||
|
||
step_over_calls = 1;
|
||
step_frame_address = FRAME_FP (frame);
|
||
step_sp = read_sp ();
|
||
|
||
step_multi = 0; /* Only one call to proceed */
|
||
|
||
proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1);
|
||
}
|
||
|
||
static void
|
||
until_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
if (!target_has_execution)
|
||
error ("The program is not running.");
|
||
if (arg)
|
||
until_break_command (arg, from_tty);
|
||
else
|
||
until_next_command (from_tty);
|
||
}
|
||
|
||
/* "finish": Set a temporary breakpoint at the place
|
||
the selected frame will return to, then continue. */
|
||
|
||
static void
|
||
finish_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
struct symtab_and_line sal;
|
||
register struct frame_info *frame;
|
||
register struct symbol *function;
|
||
struct breakpoint *breakpoint;
|
||
struct cleanup *old_chain;
|
||
|
||
if (arg)
|
||
error ("The \"finish\" command does not take any arguments.");
|
||
if (!target_has_execution)
|
||
error ("The program is not running.");
|
||
if (selected_frame == NULL)
|
||
error ("No selected frame.");
|
||
|
||
frame = get_prev_frame (selected_frame);
|
||
if (frame == 0)
|
||
error ("\"finish\" not meaningful in the outermost frame.");
|
||
|
||
clear_proceed_status ();
|
||
|
||
sal = find_pc_line (frame->pc, 0);
|
||
sal.pc = frame->pc;
|
||
|
||
breakpoint = set_momentary_breakpoint (sal, frame, bp_finish);
|
||
|
||
old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint);
|
||
|
||
/* Find the function we will return from. */
|
||
|
||
function = find_pc_function (selected_frame->pc);
|
||
|
||
/* Print info on the selected frame, including level number
|
||
but not source. */
|
||
if (from_tty)
|
||
{
|
||
printf_filtered ("Run till exit from ");
|
||
print_stack_frame (selected_frame, selected_frame_level, 0);
|
||
}
|
||
|
||
proceed_to_finish = 1; /* We want stop_registers, please... */
|
||
proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0);
|
||
|
||
/* Did we stop at our breakpoint? */
|
||
if (bpstat_find_breakpoint(stop_bpstat, breakpoint) != NULL
|
||
&& function != 0)
|
||
{
|
||
struct type *value_type;
|
||
register value_ptr val;
|
||
CORE_ADDR funcaddr;
|
||
int struct_return;
|
||
|
||
value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function));
|
||
if (!value_type)
|
||
fatal ("internal: finish_command: function has no target type");
|
||
|
||
if (TYPE_CODE (value_type) == TYPE_CODE_VOID)
|
||
return;
|
||
|
||
funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function));
|
||
|
||
struct_return = using_struct_return (value_of_variable (function, NULL),
|
||
|
||
funcaddr,
|
||
check_typedef (value_type),
|
||
BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function)));
|
||
|
||
if (!struct_return)
|
||
{
|
||
val = value_being_returned (value_type, stop_registers, struct_return);
|
||
printf_filtered ("Value returned is $%d = ", record_latest_value (val));
|
||
value_print (val, gdb_stdout, 0, Val_no_prettyprint);
|
||
printf_filtered ("\n");
|
||
}
|
||
else
|
||
{
|
||
/* elz: we cannot determine the contents of the structure because
|
||
it is on the stack, and we don't know where, since we did not
|
||
initiate the call, as opposed to the call_function_by_hand case */
|
||
#ifdef VALUE_RETURNED_FROM_STACK
|
||
val = 0;
|
||
printf_filtered ("Value returned has type: %s.", TYPE_NAME (value_type));
|
||
printf_filtered (" Cannot determine contents\n");
|
||
#else
|
||
val = value_being_returned (value_type, stop_registers, struct_return);
|
||
printf_filtered ("Value returned is $%d = ", record_latest_value (val));
|
||
value_print (val, gdb_stdout, 0, Val_no_prettyprint);
|
||
printf_filtered ("\n");
|
||
#endif
|
||
|
||
}
|
||
}
|
||
do_cleanups(old_chain);
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
program_info (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
bpstat bs = stop_bpstat;
|
||
int num = bpstat_num (&bs);
|
||
|
||
if (!target_has_execution)
|
||
{
|
||
printf_filtered ("The program being debugged is not being run.\n");
|
||
return;
|
||
}
|
||
|
||
target_files_info ();
|
||
printf_filtered ("Program stopped at %s.\n",
|
||
local_hex_string((unsigned long) stop_pc));
|
||
if (stop_step)
|
||
printf_filtered ("It stopped after being stepped.\n");
|
||
else if (num != 0)
|
||
{
|
||
/* There may be several breakpoints in the same place, so this
|
||
isn't as strange as it seems. */
|
||
while (num != 0)
|
||
{
|
||
if (num < 0)
|
||
printf_filtered ("It stopped at a breakpoint that has since been deleted.\n");
|
||
else
|
||
printf_filtered ("It stopped at breakpoint %d.\n", num);
|
||
num = bpstat_num (&bs);
|
||
}
|
||
}
|
||
else if (stop_signal != TARGET_SIGNAL_0)
|
||
{
|
||
printf_filtered ("It stopped with signal %s, %s.\n",
|
||
target_signal_to_name (stop_signal),
|
||
target_signal_to_string (stop_signal));
|
||
}
|
||
|
||
if (!from_tty)
|
||
printf_filtered ("Type \"info stack\" or \"info registers\" for more information.\n");
|
||
}
|
||
|
||
static void
|
||
environment_info (var, from_tty)
|
||
char *var;
|
||
int from_tty;
|
||
{
|
||
if (var)
|
||
{
|
||
register char *val = get_in_environ (inferior_environ, 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
|
||
{
|
||
register char **vector = environ_vector (inferior_environ);
|
||
while (*vector)
|
||
{
|
||
puts_filtered (*vector++);
|
||
puts_filtered ("\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
set_environment_command (arg, from_tty)
|
||
char *arg;
|
||
int from_tty;
|
||
{
|
||
register 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 (inferior_environ, var, "");
|
||
}
|
||
else
|
||
set_in_environ (inferior_environ, var, val);
|
||
free (var);
|
||
}
|
||
|
||
static void
|
||
unset_environment_command (var, from_tty)
|
||
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 (inferior_environ);
|
||
inferior_environ = make_environ ();
|
||
}
|
||
}
|
||
else
|
||
unset_in_environ (inferior_environ, var);
|
||
}
|
||
|
||
/* Handle the execution path (PATH variable) */
|
||
|
||
static const char path_var_name[] = "PATH";
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
path_info (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
puts_filtered ("Executable and object file path: ");
|
||
puts_filtered (get_in_environ (inferior_environ, path_var_name));
|
||
puts_filtered ("\n");
|
||
}
|
||
|
||
/* Add zero or more directories to the front of the execution path. */
|
||
|
||
static void
|
||
path_command (dirname, from_tty)
|
||
char *dirname;
|
||
int from_tty;
|
||
{
|
||
char *exec_path;
|
||
char *env;
|
||
dont_repeat ();
|
||
env = get_in_environ (inferior_environ, path_var_name);
|
||
/* Can be null if path is not set */
|
||
if (!env)
|
||
env = "";
|
||
exec_path = strsave (env);
|
||
mod_path (dirname, &exec_path);
|
||
set_in_environ (inferior_environ, path_var_name, exec_path);
|
||
free (exec_path);
|
||
if (from_tty)
|
||
path_info ((char *)NULL, from_tty);
|
||
}
|
||
|
||
|
||
#ifdef REGISTER_NAMES
|
||
char *gdb_register_names[] = REGISTER_NAMES;
|
||
#endif
|
||
/* Print out the machine register regnum. If regnum is -1,
|
||
print all registers (fpregs == 1) or all non-float registers
|
||
(fpregs == 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 macro DO_REGISTERS_INFO(regnum, fp)
|
||
to provide that format. */
|
||
|
||
#if !defined (DO_REGISTERS_INFO)
|
||
|
||
#define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp)
|
||
|
||
static void
|
||
do_registers_info (regnum, fpregs)
|
||
int regnum;
|
||
int fpregs;
|
||
{
|
||
register int i;
|
||
int numregs = ARCH_NUM_REGS;
|
||
|
||
for (i = 0; i < numregs; i++)
|
||
{
|
||
char raw_buffer[MAX_REGISTER_RAW_SIZE];
|
||
char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
|
||
|
||
/* Decide between printing all regs, nonfloat regs, or specific reg. */
|
||
if (regnum == -1) {
|
||
if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs)
|
||
continue;
|
||
} else {
|
||
if (i != regnum)
|
||
continue;
|
||
}
|
||
|
||
/* If the register name is empty, it is undefined for this
|
||
processor, so don't display anything. */
|
||
if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0')
|
||
continue;
|
||
|
||
fputs_filtered (REGISTER_NAME (i), gdb_stdout);
|
||
print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout);
|
||
|
||
/* Get the data in raw format. */
|
||
if (read_relative_register_raw_bytes (i, raw_buffer))
|
||
{
|
||
printf_filtered ("*value not available*\n");
|
||
continue;
|
||
}
|
||
|
||
/* Convert raw data to virtual format if necessary. */
|
||
#ifdef REGISTER_CONVERTIBLE
|
||
if (REGISTER_CONVERTIBLE (i))
|
||
{
|
||
REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i),
|
||
raw_buffer, virtual_buffer);
|
||
}
|
||
else
|
||
#endif
|
||
memcpy (virtual_buffer, raw_buffer,
|
||
REGISTER_VIRTUAL_SIZE (i));
|
||
|
||
/* If virtual format is floating, print it that way, and in raw hex. */
|
||
if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT)
|
||
{
|
||
register int j;
|
||
|
||
#ifdef INVALID_FLOAT
|
||
if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i)))
|
||
printf_filtered ("<invalid float>");
|
||
else
|
||
#endif
|
||
val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
|
||
gdb_stdout, 0, 1, 0, Val_pretty_default);
|
||
|
||
printf_filtered ("\t(raw 0x");
|
||
for (j = 0; j < REGISTER_RAW_SIZE (i); j++)
|
||
{
|
||
register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j
|
||
: REGISTER_RAW_SIZE (i) - 1 - j;
|
||
printf_filtered ("%02x", (unsigned char)raw_buffer[idx]);
|
||
}
|
||
printf_filtered (")");
|
||
}
|
||
|
||
/* FIXME! val_print probably can handle all of these cases now... */
|
||
|
||
/* Else if virtual format is too long for printf,
|
||
print in hex a byte at a time. */
|
||
else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long))
|
||
{
|
||
register int j;
|
||
printf_filtered ("0x");
|
||
for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++)
|
||
printf_filtered ("%02x", (unsigned char)virtual_buffer[j]);
|
||
}
|
||
/* Else print as integer in hex and in decimal. */
|
||
else
|
||
{
|
||
val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
|
||
gdb_stdout, 'x', 1, 0, Val_pretty_default);
|
||
printf_filtered ("\t");
|
||
val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0,
|
||
gdb_stdout, 0, 1, 0, Val_pretty_default);
|
||
}
|
||
|
||
/* The SPARC wants to print even-numbered float regs as doubles
|
||
in addition to printing them as floats. */
|
||
#ifdef PRINT_REGISTER_HOOK
|
||
PRINT_REGISTER_HOOK (i);
|
||
#endif
|
||
|
||
printf_filtered ("\n");
|
||
}
|
||
}
|
||
#endif /* no DO_REGISTERS_INFO. */
|
||
|
||
extern int target_map_name_to_register PARAMS ((char *, int));
|
||
|
||
void
|
||
registers_info (addr_exp, fpregs)
|
||
char *addr_exp;
|
||
int fpregs;
|
||
{
|
||
int regnum, numregs;
|
||
register char *end;
|
||
|
||
if (!target_has_registers)
|
||
error ("The program has no registers now.");
|
||
if (selected_frame == NULL)
|
||
error ("No selected frame.");
|
||
|
||
if (!addr_exp)
|
||
{
|
||
DO_REGISTERS_INFO(-1, fpregs);
|
||
return;
|
||
}
|
||
|
||
do
|
||
{
|
||
if (addr_exp[0] == '$')
|
||
addr_exp++;
|
||
end = addr_exp;
|
||
while (*end != '\0' && *end != ' ' && *end != '\t')
|
||
++end;
|
||
numregs = ARCH_NUM_REGS;
|
||
|
||
regnum = target_map_name_to_register (addr_exp, end - addr_exp);
|
||
if (regnum >= 0)
|
||
goto found;
|
||
|
||
regnum = numregs;
|
||
|
||
if (*addr_exp >= '0' && *addr_exp <= '9')
|
||
regnum = atoi (addr_exp); /* Take a number */
|
||
if (regnum >= numregs) /* Bad name, or bad number */
|
||
error ("%.*s: invalid register", end - addr_exp, addr_exp);
|
||
|
||
found:
|
||
DO_REGISTERS_INFO(regnum, fpregs);
|
||
|
||
addr_exp = end;
|
||
while (*addr_exp == ' ' || *addr_exp == '\t')
|
||
++addr_exp;
|
||
} while (*addr_exp != '\0');
|
||
}
|
||
|
||
void
|
||
all_registers_info (addr_exp, from_tty)
|
||
char *addr_exp;
|
||
int from_tty;
|
||
{
|
||
registers_info (addr_exp, 1);
|
||
}
|
||
|
||
void
|
||
nofp_registers_info (addr_exp, from_tty)
|
||
char *addr_exp;
|
||
int from_tty;
|
||
{
|
||
registers_info (addr_exp, 0);
|
||
}
|
||
|
||
|
||
/*
|
||
* 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. */
|
||
|
||
void
|
||
attach_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
#ifdef SOLIB_ADD
|
||
extern int auto_solib_add;
|
||
#endif
|
||
|
||
char * exec_file;
|
||
char * full_exec_path = NULL;
|
||
|
||
dont_repeat (); /* Not for the faint of heart */
|
||
|
||
if (target_has_execution)
|
||
{
|
||
if (query ("A program is being debugged already. Kill it? "))
|
||
target_kill ();
|
||
else
|
||
error ("Not killed.");
|
||
}
|
||
|
||
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 ();
|
||
|
||
/* Install inferior's terminal modes. */
|
||
target_terminal_inferior ();
|
||
|
||
/* 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 ();
|
||
stop_soon_quietly = 1;
|
||
|
||
/* No traps are generated when attaching to inferior under Mach 3
|
||
or GNU hurd. */
|
||
#ifndef ATTACH_NO_WAIT
|
||
wait_for_inferior ();
|
||
#endif
|
||
|
||
/*
|
||
* 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 (inferior_pid);
|
||
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 = savestring (exec_file, strlen (exec_file));
|
||
|
||
exec_file_attach (full_exec_path, from_tty);
|
||
symbol_file_command (full_exec_path, from_tty);
|
||
}
|
||
}
|
||
|
||
#ifdef SOLIB_ADD
|
||
if (auto_solib_add)
|
||
{
|
||
/* Add shared library symbols from the newly attached process, if any. */
|
||
SOLIB_ADD ((char *)0, from_tty, ¤t_target);
|
||
re_enable_breakpoints_in_shlibs ();
|
||
}
|
||
#endif
|
||
|
||
/* Take any necessary post-attaching actions for this platform.
|
||
*/
|
||
target_post_attach (inferior_pid);
|
||
|
||
normal_stop ();
|
||
}
|
||
|
||
/*
|
||
* 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).
|
||
*/
|
||
|
||
static void
|
||
detach_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
dont_repeat (); /* Not for the faint of heart */
|
||
target_detach (args, from_tty);
|
||
#if defined(SOLIB_RESTART)
|
||
SOLIB_RESTART ();
|
||
#endif
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
float_info (addr_exp, from_tty)
|
||
char *addr_exp;
|
||
int from_tty;
|
||
{
|
||
#ifdef FLOAT_INFO
|
||
FLOAT_INFO;
|
||
#else
|
||
printf_filtered ("No floating point info available for this processor.\n");
|
||
#endif
|
||
}
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
unset_command (args, from_tty)
|
||
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);
|
||
}
|
||
|
||
void
|
||
_initialize_infcmd ()
|
||
{
|
||
struct cmd_list_element *c;
|
||
|
||
add_com ("tty", class_run, tty_command,
|
||
"Set terminal for future runs of program being debugged.");
|
||
|
||
add_show_from_set
|
||
(add_set_cmd ("args", class_run, var_string_noescape, (char *)&inferior_args,
|
||
|
||
"Set argument list to give program being debugged when it is started.\n\
|
||
Follow this command with any number of args, to be passed to the program.",
|
||
&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);
|
||
c->completer = 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);
|
||
c->completer = 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);
|
||
c->completer = noop_completer;
|
||
|
||
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.");
|
||
|
||
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);
|
||
c->completer = noop_completer;
|
||
|
||
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_com ("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 you\n\
|
||
were debugging a file, the file is closed and gdb no longer accesses it.");
|
||
|
||
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 ("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);
|
||
|
||
add_com ("until", class_run, until_command,
|
||
"Execute until the program reaches a source line greater than the current\n\
|
||
or a specified line or address or function (same args as break command).\n\
|
||
Execution will also stop upon exit from the current stack frame.");
|
||
add_com_alias ("u", "until", class_run, 1);
|
||
|
||
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.");
|
||
|
||
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.");
|
||
if (xdb_commands)
|
||
add_com_alias("g", "g", 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).");
|
||
add_com_alias ("c", "cont", class_run, 1);
|
||
add_com_alias ("fg", "cont", class_run, 1);
|
||
|
||
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.");
|
||
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.");
|
||
|
||
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.");
|
||
|
||
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");
|
||
|
||
inferior_args = savestring ("", 1); /* Initially no args */
|
||
inferior_environ = make_environ ();
|
||
init_environ (inferior_environ);
|
||
}
|