mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
208 lines
6.9 KiB
Plaintext
Executable File
208 lines
6.9 KiB
Plaintext
Executable File
_dnl__ -*- Texinfo -*-
|
|
_dnl__ Copyright (c) 1988 1989 1990 1991 Free Software Foundation, Inc.
|
|
_dnl__ This file is part of the source for the GDB manual.
|
|
@c M4 FRAGMENT: $Id$
|
|
@node Invocation, Commands, Sample Session, Top
|
|
@chapter Getting In and Out of _GDBN__
|
|
|
|
@menu
|
|
* Starting _GDBN__:: Starting _GDBN__
|
|
* Leaving _GDBN__:: Leaving _GDBN__
|
|
* Shell Commands:: Shell Commands
|
|
@end menu
|
|
|
|
@node Starting _GDBN__, Leaving _GDBN__, Invocation, Invocation
|
|
@section Starting _GDBN__
|
|
|
|
_GDBN__ is invoked with the shell command @code{_GDBP__}. Once started,
|
|
it reads commands from the terminal until you tell it to exit.
|
|
|
|
You can run @code{_GDBP__} with no arguments or options; but the most
|
|
usual way to start _GDBN__ is with one argument or two, specifying an
|
|
executable program as the argument:
|
|
@example
|
|
_GDBP__ program
|
|
@end example
|
|
@noindent
|
|
You can also start with both an executable program and a core file specified:
|
|
@example
|
|
_GDBP__ program core
|
|
@end example
|
|
|
|
@noindent
|
|
You can further control how _GDBN__ starts up by using command-line
|
|
options. _GDBN__ itself can remind you of the options available:
|
|
@example
|
|
_GDBP__ -help
|
|
@end example
|
|
@noindent
|
|
will display all available options and briefly describe their use
|
|
(@samp{_GDBP__ -h} is a shorter equivalent).
|
|
|
|
All options and command line arguments you give are processed
|
|
in sequential order. The order makes a difference when the
|
|
@samp{-x} option is used.
|
|
|
|
@menu
|
|
* File Options:: Choosing Files
|
|
* Mode Options:: Choosing Modes
|
|
_if__(!_GENERIC__)
|
|
_include__(gdb.inv.m-m4)_dnl__
|
|
_fi__(!_GENERIC__)
|
|
@end menu
|
|
|
|
@node File Options, Mode Options, Starting _GDBN__, Starting _GDBN__
|
|
@subsection Choosing Files
|
|
|
|
As shown above, any arguments other than options specify an executable
|
|
file and core file; that is, the first argument encountered with no
|
|
associated option flag is equivalent to a @samp{-se} option, and the
|
|
second, if any, is equivalent to a @samp{-c} option. Many options have
|
|
both long and short forms; both are shown here. The long forms are also
|
|
recognized if you truncate them, so long as enough of the option is
|
|
present to be unambiguous. (If you prefer, you can flag option
|
|
arguments with @samp{+} rather than @samp{-}, though we illustrate the
|
|
more usual convention.)
|
|
|
|
@table @code
|
|
@item -symbols=@var{file}
|
|
@itemx -s @var{file}
|
|
Read symbol table from file @var{file}.
|
|
|
|
@item -exec=@var{file}
|
|
@itemx -e @var{file}
|
|
Use file @var{file} as the executable file to execute when
|
|
appropriate, and for examining pure data in conjunction with a core
|
|
dump.
|
|
|
|
@item -se @var{file}
|
|
Read symbol table from file @var{file} and use it as the executable
|
|
file.
|
|
|
|
@item -core=@var{file}
|
|
@itemx -c @var{file}
|
|
Use file @var{file} as a core dump to examine.
|
|
|
|
@item -command=@var{file}
|
|
@itemx -x @var{file}
|
|
Execute _GDBN__ commands from file @var{file}. @xref{Command Files}.
|
|
|
|
@item -directory=@var{directory}
|
|
@itemx -d @var{directory}
|
|
Add @var{directory} to the path to search for source files.
|
|
@end table
|
|
|
|
_if__(!_GENERIC__)
|
|
@node Mode Options, i960-Nindy Remote, File Options, Starting _GDBN__
|
|
_fi__(!_GENERIC__)
|
|
_if__(_GENERIC__)
|
|
@node Mode Options, , File Options, Starting _GDBN__
|
|
_fi__(_GENERIC__)
|
|
@subsection Choosing Modes
|
|
|
|
@table @code
|
|
@item -nx
|
|
@itemx -n
|
|
Do not execute commands from any @file{_GDBINIT__} initialization files.
|
|
Normally, the commands in these files are executed after all the
|
|
command options and arguments have been processed. @xref{Command
|
|
Files}.
|
|
|
|
@item -quiet
|
|
@itemx -q
|
|
``Quiet''. Do not print the introductory and copyright messages. These
|
|
messages are also suppressed in batch mode, or if an executable file name is
|
|
specified on the _GDBN__ command line.
|
|
|
|
@item -batch
|
|
Run in batch mode. Exit with status @code{0} after processing all the command
|
|
files specified with @samp{-x} (and @file{_GDBINIT__}, if not inhibited).
|
|
Exit with nonzero status if an error occurs in executing the _GDBN__
|
|
commands in the command files.
|
|
|
|
Batch mode may be useful for running _GDBN__ as a filter, for example to
|
|
download and run a program on another computer; in order to make this
|
|
more useful, the message
|
|
@example
|
|
Program exited normally.
|
|
@end example
|
|
@noindent
|
|
(which is ordinarily issued whenever a program running under _GDBN__ control
|
|
terminates) is not issued when running in batch mode.
|
|
|
|
@item -cd @var{directory}
|
|
Run _GDBN__ using @var{directory} as its working directory,
|
|
instead of the current directory.
|
|
|
|
@item -fullname
|
|
@itemx -f
|
|
This option is used when Emacs runs _GDBN__ as a subprocess. It tells _GDBN__
|
|
to output the full file name and line number in a standard,
|
|
recognizable fashion each time a stack frame is displayed (which
|
|
includes each time the program stops). This recognizable format looks
|
|
like two @samp{\032} characters, followed by the file name, line number
|
|
and character position separated by colons, and a newline. The
|
|
Emacs-to-_GDBN__ interface program uses the two @samp{\032} characters as
|
|
a signal to display the source code for the frame.
|
|
|
|
@item -b @var{bps}
|
|
Set the line speed (baud rate or bits per second) of any serial
|
|
interface used by _GDBN__ for remote debugging.
|
|
|
|
@item -tty @var{device}
|
|
Run using @var{device} for your program's standard input and output.
|
|
@c FIXME: kingdon thinks there's more to -tty. Investigate.
|
|
@end table
|
|
|
|
_if__(!_GENERIC__)
|
|
_include__(gdb.inv.s-m4)
|
|
_fi__(!_GENERIC__)
|
|
|
|
@node Leaving _GDBN__, Shell Commands, Starting _GDBN__, Invocation
|
|
@section Leaving _GDBN__
|
|
@cindex exiting _GDBN__
|
|
@table @code
|
|
@item quit
|
|
@kindex quit
|
|
@kindex q
|
|
To exit _GDBN__, use the @code{quit} command (abbreviated @code{q}), or type
|
|
an end-of-file character (usually @kbd{C-d}).
|
|
@end table
|
|
|
|
@cindex interrupt
|
|
An interrupt (often @kbd{C-c}) will not exit from _GDBN__, but rather
|
|
will terminate the action of any _GDBN__ command that is in progress and
|
|
return to _GDBN__ command level. It is safe to type the interrupt
|
|
character at any time because _GDBN__ does not allow it to take effect
|
|
until a time when it is safe.
|
|
|
|
If you've been using _GDBN__ to control an attached process or device,
|
|
you can release it with the @code{detach} command; @pxref{Attach}.
|
|
|
|
@node Shell Commands, , Leaving _GDBN__, Invocation
|
|
@section Shell Commands
|
|
If you just need to execute occasional shell commands during your
|
|
debugging session, there's no need to leave or suspend _GDBN__; you can
|
|
just use the @code{shell} command.
|
|
|
|
@table @code
|
|
@item shell @var{command string}
|
|
@kindex shell
|
|
@cindex shell escape
|
|
Directs _GDBN__ to invoke an inferior shell to execute @var{command
|
|
string}. If it exists, the environment variable @code{SHELL} is used
|
|
for the name of the shell to run. Otherwise _GDBN__ uses
|
|
@code{/bin/sh}.
|
|
@end table
|
|
|
|
The utility @code{make} is often needed in development environments.
|
|
You don't have to use the @code{shell} command for this purpose in _GDBN__:
|
|
|
|
@table @code
|
|
@item make @var{make-args}
|
|
@kindex make
|
|
@cindex calling make
|
|
Causes _GDBN__ to execute an inferior @code{make} program with the specified
|
|
arguments. This is equivalent to @samp{shell make @var{make-args}}.
|
|
@end table
|