2520 lines
70 KiB
Text
2520 lines
70 KiB
Text
\input texinfo @c -*-texinfo-*-
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@c %**start of header
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@setfilename gdbmi.info
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@settitle GDB/MI Machine Interface
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@setchapternewpage off
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@c %**end of header
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@ifinfo
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This file documents GDB/MI, a Machine Interface to GDB.
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Copyright (C) 2000, Free Software Foundation, Inc.
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Contributed by Cygnus Solutions.
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Permission is granted to make and distribute verbatim copies of this
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manual provided the copyright notice and this permission notice are
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preserved on all copies.
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@ignore
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Permission is granted to process this file through TeX and print the
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results, provided the printed document carries copying permission notice
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identical to this one except for the removal of this paragraph (this
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paragraph not being relevant to the printed manual).
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@end ignore
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Permission is granted to copy and distribute modified versions of this
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manual under the conditions for verbatim copying, provided also that the
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entire resulting derived work is distributed under the terms of a
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permission notice identical to this one.
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Permission is granted to copy and distribute translations of this manual
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into another language, under the above conditions for modified versions.
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@end ifinfo
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@c This title page illustrates only one of the
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@c two methods of forming a title page.
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@titlepage
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@title GDB/MI
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@subtitle Version 0.2
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@subtitle Feb 2000
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@author Andrew Cagney, Fernando Nasser and Elena Zannoni
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@c The following two commands
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@c start the copyright page.
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@page
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@vskip 0pt plus 1filll
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Permission is granted to make and distribute verbatim copies of this
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manual provided the copyright notice and this permission notice are
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preserved on all copies.
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Copyright @copyright{} 2000, Free Software Foundation, Inc.
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@end titlepage
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@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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@chapter Overview
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@heading Function and Purpose
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GDB/MI is a line based machine oriented text interface to GDB. It is
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specifically intended to support the development of systems which use
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the debugger as just one small component of a larger system.
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@heading This Document
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This document is a specification of the GDB/MI interface. It is written
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in the form of a reference manual.
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@heading Terminology
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@heading Dependencies
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@heading Acknowledgments
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In alphabetic order: Fernando Nasser, Stan Shebs and Elena Zannoni.
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@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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@chapter Command Syntax
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@section Input Syntax
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@table @code
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@item <command> @expansion{}
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<cli-command> | <mi-command>
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@item <cli-command> @expansion{}
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[ <token> ] "any existing GDB CLI command" <nl>
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@item <mi-command> @expansion{}
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[ <token> ] ``-'' <operation> ( `` '' <option> )* [ `` --'' ] ( `` '' <parameter> )* <nl>
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@item <token> @expansion{}
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``any sequence of digits''
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@item <option> @expansion{}
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``-'' <parameter> [ `` '' <parameter> ]
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@item <parameter> @expansion{}
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<non-blank-sequence> | <c-string>
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@item <operation> @expansion{}
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any of the operations described in this document.
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@item <non-blank-sequence> @expansion{}
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anything provided it doesn't contain special characters such as ``-''
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<nl>, ``"'' and of course `` ''.
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@item <c-string> @expansion{}
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``"'' <seven-bit-iso-c-string-content> ``"''
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@item <nl> @expansion{}
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CR | CR-LF
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@end table
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Notes:
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@itemize @bullet
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@item
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The CLI commands are still handled by the MI interpreter; their output
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is described below
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@item
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The @code{<token>}, when present, is passed back when the command
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finishes.
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@item
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Some mi commands accept optional arguments as part of the parameter
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list. Each option is identified by a leading @code{-} (dash) and may be
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followed by an option argument parameter. Options occure first in the
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parameter list and can be delimiated from normal parameters using
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@code{--}.
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@end itemize
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Pragmatics:
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@itemize @bullet
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@item
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We want easy access to the existing CLI syntax (for debugging).
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@item
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We want it easy to spot a MI operation
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@end itemize
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@section Output Syntax
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The output from GDB/MI consists of zero or more out-of-band records
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followed, optionally, by a single result record. The result record
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being for the most recent command. The sequence of output records is
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terminated by ``(gdb)''.
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If an input command was prefixed with a @code{<token>} then the
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corresponding output for that command will also be prefixed by that same
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token.
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@table @code
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@item <output> @expansion{}
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( <out-of-band-record> )* [ <result-record> ] ``(gdb)'' <nl>
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@item <result-record> @expansion{}
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[ <token> ] ``^'' <result-class> ( ``,'' <result> )* <nl>
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@item <out-of-band-record> @expansion{}
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<async-record> | <stream-record>
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@item <async-record> @expansion{}
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<exec-async-output> | <status-async-output> | <notify-async-output>
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@item <exec-async-output> @expansion{}
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[ <token> ] ``*'' <async-output>
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@item <status-async-output> @expansion{}
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[ <token> ] ``+'' <async-output>
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@item <notify-async-output> @expansion{}
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[ <token> ] ``='' <async-output>
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@item <async-output> @expansion{}
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<async-class> ( ``,'' <result> )* <nl>
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@item <result-class> @expansion{}
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``done'' | ``running'' | ``connected'' | ``error'' | ``exit''
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@item <async-class> @expansion{}
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``stopped'' | others (depending on needs, still in development)
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@item <result> @expansion{}
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[ <string> ``='' ] <value>
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@item <value> @expansion{}
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<const> | ``@{'' <result> ( ``,'' <result> )* ``@}''
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@item <const> @expansion{}
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<c-string>
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@item <stream-record> @expansion{}
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<console-stream-output> | <target-stream-output> | <log-stream-output>
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@item <console-stream-output> @expansion{}
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``~'' <c-string>
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@item <target-stream-output> @expansion{}
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``@@'' <c-string>
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@item <log-stream-output> @expansion{}
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``&'' <c-string>
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@item <nl> @expansion{}
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CR | CR-LF
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@item <token> @expansion{}
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``any sequence of digits''
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@end table
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In addition, the following are still being developed.
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@table @code
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@item <query>
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This action is currently undefined.
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@end table
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Notes:
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@itemize @bullet
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@item
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All output sequences end in a single line containing a period.
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@item
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The @code{<token>} is from the corresponding request. If an execution
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command is interrupted by the -exec-interrupt command, the token
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associated with the `*stopped' message is the one of the original
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execution command, not the one of the interrupt-command.
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@item
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<status-async-output> contains on-going status information about the progress
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of a slow operation. It can be discarded. All status output is prefixed by
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the prefix `+'.
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@item
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<exec-async-output> contains asynchronous state change on the target
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(stopped, started, disappeared). All async output is prefixed by
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the prefix `*'.
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@item
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<notify-async-output> contains supplementary information that the client should
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handle (new breakpoint information). All notify output is prefixed by
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the prefix `='.
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@item
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<console-stream-output> is output that should be displayed as is in the
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console. It is the textual response to a CLI command. All the console
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output is prefixed by the prefix ``~''.
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@item
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<target-stream-output> is the output produced by the target program.
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All the target output is prefixed by the prefix ``@@''.
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@item
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<log-stream-output> is output text coming from GDB's internals, for
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instance messages that should be displayed as part of an error log. All
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the log output is prefixed by the prefix ``&''.
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@end itemize
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@section Simple Examples
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@subheading Target stop:
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@example
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-> -stop
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<- (gdb)
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@end example
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(later)
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@example
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<- *stop,reason="stop",address="0x123",source="a.c:123"
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<- (gdb)
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@end example
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@subheading Simple CLI command being passed through the MI and on to the CLI.
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@example
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-> print 1+2
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<- ~3\n
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<- (gdb)
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@end example
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@subheading Command with side effects:
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@example
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-> -symbol-file xyz.exe
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<- *breakpoint,nr="3",address="0x123",source="a.c:123"
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<- (gdb)
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@end example
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@subheading A bad command:
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@example
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-> -rubbish
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<- error,"Rubbish not found"
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<- (gdb)
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@end example
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@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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@chapter CLI compatibility
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To help users familiar with the GDB's existing CLI interface, the GDB/MI
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will accept existing CLI commands. As specified by the syntax, such
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commands can be directly entered into the MI interface and GDB will
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respond.
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The mechanism is provided as an aid to developers of MI clients and not
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as a reliable interface into the CLI. Since the command is being
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interpreteted in an environment that assumes MI behaviour the exact
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output of such commands is likely to end up being an un-supported hybrid
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of MI and CLI output.
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@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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@chapter Output Records
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@section Result Records
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In addition to a number of out-of-band notifications the response to an
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MI command includes one of the following result indications.
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@table @code
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@item ``^done'' [ ``,'' <results> ]
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The synchronous operation was successful, @code{<results>} is the return
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value.
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@item ``^running''
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The asynchronous operation was successfully started. The target is
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running. @emph{Is this one correct should it be an out-of-band
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notification?}
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@item ``^error'' ``,'' <c-string>
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The operation failed. The @code{<c-string>} contains the corresponding
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error message.
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@end table
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@section Stream Records
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GDB internally maintains a number of output streams: the console, the
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target, and the log. The output intended for each of these streams is
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tunneled through the MI interface using stream records.
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In addition to the prefix each stream record contains a
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@code{<string-output>}. This is either raw text (with an implicit new
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line) or a quoted C string (which does not contain an implicit newline).
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@table @code
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@item ``~'' <string-output>
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The console output stream contains text that should be displayed in the
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CLI console window. It contains the textual responses to CLI commands.
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@item ``@@'' <string-output>
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The target output stream contains any textual output from the running
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target.
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@item ``&'' <string-output>
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The LOG stream contains debugging messages being produced by GDB's
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internals.
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@end table
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@section Out-of-band Records.
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Out-of-band records are used to notify the MI client of additional
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changes that have occurred. Those changes can either be a consequence of
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an MI (breakpoint modified) or as a result of target activity (target
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stopped).
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The following is a preliminary list of possible out-of-band records.
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@table @code
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@item ``*'' ``stop''
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@end table
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@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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@chapter Command Description Format
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The remaining chapters describe blocks of commands. Each block of
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commands is laid out in a fashion similar to this chapter.
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Note the the line breaks shown in the examples are here only for
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readability. They don't appear in the real output.
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Note that the commands with a non available example (N.A.) are not yet
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implemented.
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@section Motivation
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What motivates the collection of commands
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@section Introduction
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Brief introduction to the commands as a whole.
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@section Operations
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@subsection -command <args>...
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@subsubsection Result
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@subsubsection Out-of-band
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@subsubsection Notes
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@subsubsection Example
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@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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@chapter Breakpoint table commands
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@section -break-after <number> <count>
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The breakpoint number <number> is not in effect until it has been hit <count> times.
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Note how this is reflected in the output of the -break-list command.
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@subsection GDB command
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ignore
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@subsection Example
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@example
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(gdb)
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-break-insert main
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^done,bkpt=@{number="1",addr="0x000100d0",file="hello.c",line="5"@}
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(gdb)
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-break-after 1 3
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~
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^done
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(gdb)
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-break-list
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^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
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bkpt=@{number="1",type="breakpoint",disp="keep",enabled="y",
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addr="0x000100d0",func="main",file="hello.c",line="5",times="0",ignore="3"@}@}
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(gdb)
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@end example
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@c @section -break-catch
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@c @section -break-commands
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@section -break-condition <number> <expr>
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Breakpoint <number> will stop the program only if the condition in <expr> is true.
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The condition becomes part of the -break-list output.
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@subsection GDB command
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condition
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@subsection Example
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@example
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(gdb)
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-break-condition 1 1
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^done
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(gdb)
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-break-list
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^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
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bkpt=@{number="1",type="breakpoint",disp="keep",enabled="y",
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addr="0x000100d0",func="main",file="hello.c",line="5",cond="1",times="0",ignore="3"@}@}
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(gdb)
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@end example
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@section -break-delete @{ <breakpoint> @}+
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Delete the breakpoint(s) specified in the argument list. This is
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obviously reflected in the breakpoint list.
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@subsection GDB command
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delete
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@subsection Example
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@example
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(gdb)
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-break-delete 1
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^done
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(gdb)
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-break-list
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^done,BreakpointTable=@{@}
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(gdb)
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@end example
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@section -break-disable @{ <breakpoint> @}+
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Disable the breakpoint(s). Note how the field 'enabled' in the break
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list is now set to 'n'.
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@subsection GDB command
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disable
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@subsection Example
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@example
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(gdb)
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-break-disable 2
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^done
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(gdb)
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-break-list
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^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
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bkpt=@{number="2",type="breakpoint",disp="keep",enabled="n",
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addr="0x000100d0",func="main",file="hello.c",line="5",times="0"@}@}
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(gdb)
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@end example
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@section -break-enable @{ <breakpoint> @}+
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Enable a previously disabled breakpoint(s).
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@subsection GDB command
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enable
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@subsection Example
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@example
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(gdb)
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enable 2
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^done
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(gdb)
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-break-list
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^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
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bkpt=@{number="2",type="breakpoint",disp="keep",enabled="y",
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addr="0x000100d0",func="main",file="hello.c",line="5",times="0"@}@}
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(gdb)
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@end example
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@section -break-info <breakpoint>
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REDUNDANT??? Get information about a single breakpoint.
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@subsection GDB command
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@subsection Example
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N.A.
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@section -break-insert [ "-t" ] [ "-h" ] [ "-r" ] [ "-c" <condition> ] [ "-i" <ignore-count> ] [ "-p" <thread> ] [ <line> | <addr> ]
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<line>, if specified, accordingly to the gdb manual can be one of:
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@itemize @bullet
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@item function
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@c @item +offset
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@c @item -offset
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@c @item linenum
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@item filename:linenum
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@item filename:function
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@item *address
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@end itemize
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The possible forms of this command are:
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@table @samp
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@item -t
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Insert a tempoary breakpoint.
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@item -h
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Insert a hardware breakpoint.
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@item -c <condition>
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Make the breakpoint conditional on <condition>
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@item -i <ignore-count>
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Initialize the <ignore-count>
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@item -r
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Insert a regular breakpoint in all the functions whose names match the
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given regular expression. Other flags are not applicable to regular
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expresson.
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@end table
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The result is in the form:
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^done,bkptno="<gdb number for this breakpoint>",func="<name of the
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function where the breakpoint was inserted>",file="<source file which
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contains this function>",line="<source line number within the file>"
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|
Note: this is open to change. An out-of-band breakpoint instead of part
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of the result?
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@subsection GDB command
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break, tbreak, hbreak, thbreak, rbreak.
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-break-insert main
|
|
^done,bkpt=@{number="1",addr="0x0001072c",file="recursive2.c",line="4"@}
|
|
(gdb)
|
|
-break-insert -t foo
|
|
^done,bkpt=@{number="2",addr="0x00010774",file="recursive2.c",line="11"@}
|
|
(gdb)
|
|
-break-list
|
|
^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
|
|
bkpt=@{number="1",type="breakpoint",disp="keep",enabled="y",addr="0x0001072c",
|
|
func="main",file="recursive2.c",line="4",times="0"@},
|
|
bkpt=@{number="2",type="breakpoint",disp="del",enabled="y",addr="0x00010774",
|
|
func="foo",file="recursive2.c",line="11",times="0"@}@}
|
|
(gdb)
|
|
-break-insert -r foo.*
|
|
~int foo(int, int);
|
|
^done,bkpt=@{number="3",addr="0x00010774",file="recursive2.c",line="11"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -break-list
|
|
Displays the list of inserted breakpoints, showing the following fields:
|
|
@table @samp
|
|
@item Number
|
|
Number of the breakpoint
|
|
@item Type
|
|
Type of the breakpoint: breakpoint or watchpoint
|
|
@item Disposition
|
|
Should the breakpoint be deleted or disabled when it is hit: keep or nokeep
|
|
@item Enabled
|
|
Is the breakpoint enabled or no: y or n
|
|
@item Address
|
|
Memory location at which the breakpoint is set.
|
|
@item What
|
|
Logical location of the breakpoint, expressed by function name, file name, line number.
|
|
@item times
|
|
Number of times the breakpoint has been hit.
|
|
@end table
|
|
|
|
If there are no breakpoints or watchpoints, the BreakpointTable field is
|
|
an empty list.
|
|
@subsection GDB command
|
|
info break
|
|
|
|
@subsection Example 1
|
|
@example
|
|
(gdb)
|
|
-break-list
|
|
^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
|
|
bkpt=@{number="1",type="breakpoint",disp="keep",enabled="y",
|
|
addr="0x000100d0",func="main",file="hello.c",line="5",times="0"@},
|
|
bkpt=@{number="2",type="breakpoint",disp="keep",enabled="y",
|
|
addr="0x00010114",func="foo",file="hello.c",line="13",times="0"@}@}
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 2
|
|
@example
|
|
(gdb)
|
|
-break-list
|
|
^done,BreakpointTable=@{@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -break-watch [ "-a" | "-r" ]
|
|
Create a watchpoint. With the ``-a'' option it will create an access
|
|
watchpoint, i.e. a watchpoints that triggers either on a read or on a
|
|
write on the memory location. With the ``-r'' option, the watchoint
|
|
created is a read watchpoint, i.e. it will trigger only when the memory
|
|
location os accessed for reading. Without either of the options, the
|
|
watchpoint created is a regular watchpoint, i.e. it will trigger whe the
|
|
memory location is accessed for writing.
|
|
|
|
Note that ``-break-list'' will report a single list of watchpoints and
|
|
breakpoints inserted.
|
|
|
|
@subsection GDB command
|
|
watch, awatch, rwatch
|
|
|
|
@subsection Example 1
|
|
Watchpoint on a variable in main().
|
|
@example
|
|
(gdb)
|
|
-break-watch x
|
|
^done,wpt=@{number="2",exp="x"@}
|
|
(gdb)
|
|
-exec-continue
|
|
^running
|
|
^done,reason="watchpoint-trigger",wpt=@{number="2",exp="x"@},
|
|
value=@{old="-268439212",new="55"@},
|
|
frame=@{func="main",args=@{@},file="recursive2.c",line="5"@}
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 2
|
|
Watchpoint on a variable local to a function. Gdb will stop the program execution
|
|
twice: first for the variable changing value, then for the watchpoint going out of scope.
|
|
@example
|
|
(gdb)
|
|
-break-watch C
|
|
^done,wpt=@{number="5",exp="C"@}
|
|
(gdb)
|
|
-exec-continue
|
|
^running
|
|
^done,reason="watchpoint-trigger",
|
|
wpt=@{number="5",exp="C"@},value=@{old="-276895068",new="3"@},
|
|
frame=@{func="callee4",args=@{@},file="../../../devo/gdb/testsuite/gdb.mi/basics.c",
|
|
line="13"@}
|
|
(gdb)
|
|
-exec-continue
|
|
^running
|
|
^done,reason="watchpoint-scope",wpnum="5",
|
|
frame=@{func="callee3",args=@{@{name="strarg",value="0x11940 \"A string argument.\""@}@},
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="18"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@subsection Example 3
|
|
Listing breakpoints and watchpoints, at different points in the program execution.
|
|
Note that once the watchpoint goes out of scope, it is deleted.
|
|
@example
|
|
(gdb)
|
|
-break-watch C
|
|
^done,wpt=@{number="2",exp="C"@}
|
|
(gdb)
|
|
-break-list
|
|
^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
|
|
bkpt=@{number="1",type="breakpoint",disp="keep",enabled="y",addr="0x00010734",
|
|
func="callee4",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="8",times="1"@},
|
|
bkpt=@{number="2",type="watchpoint",disp="keep",
|
|
enabled="y",addr="",what="C",times="0"@}@}
|
|
(gdb)
|
|
-exec-continue
|
|
^running
|
|
^done,reason="watchpoint-trigger",wpt=@{number="2",exp="C"@},
|
|
value=@{old="-276895068",new="3"@},
|
|
frame=@{func="callee4",args=@{@},
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="13"@}
|
|
(gdb)
|
|
-break-list
|
|
^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
|
|
bkpt=@{number="1",type="breakpoint",disp="keep",enabled="y",addr="0x00010734",
|
|
func="callee4",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="8",times="1"@},
|
|
bkpt=@{number="2",type="watchpoint",disp="keep",
|
|
enabled="y",addr="",what="C",times="-5"@}@}
|
|
(gdb)
|
|
-exec-continue
|
|
^running
|
|
^done,reason="watchpoint-scope",wpnum="2",
|
|
frame=@{func="callee3",args=@{@{name="strarg",value="0x11940 \"A string argument.\""@}@},
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="18"@}
|
|
(gdb)
|
|
-break-list
|
|
^done,BreakpointTable=@{hdr=@{"Num","Type","Disp","Enb","Address","What"@},
|
|
bkpt=@{number="1",type="breakpoint",disp="keep",enabled="y",addr="0x00010734",
|
|
func="callee4",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="8",times="1"@}@}
|
|
(gdb)
|
|
@end example
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Data manipulation
|
|
|
|
@c REMOVED FROM THE ITNERFACE.
|
|
@c @section -data-assign
|
|
@c Change the value of a program variable. Plenty of side effects.
|
|
@c @subsection GDB command
|
|
@c set variable
|
|
@c @subsection Example
|
|
@c N.A.
|
|
|
|
@section -data-disassemble ( -s <start-addr> -e <end-addr> ) | (-f <filename> -l <linenum> [-n <lines> ]] -- <mode>
|
|
Where
|
|
@table @samp
|
|
@item <start-addr>
|
|
Is the beginning address (or $pc).
|
|
@item <end-addr>
|
|
End address.
|
|
@item <filename>
|
|
Name of the file to disassemble.
|
|
@item <linenum>
|
|
Line number to disassemble around.
|
|
@item <number-of-lines>
|
|
specifies the number of disassembly lines to be produced. If it is -1
|
|
the whole function will be disassembled, in case no <end> address is
|
|
specified. If <end> is specified as a non-zero value, and
|
|
<number-of-lines> is lower that the number of disassembly lines between
|
|
<begin> and <end>, we'll display only <number-of-lines> lines, vice
|
|
versa if <number-of-lines> is higher than the number of lines between
|
|
<begin> and <end>, we'll display only the lines up to <end>.
|
|
@item <mode>
|
|
can be 0 (only disassembly) or 1 (mixed source and disassembly).
|
|
@end table
|
|
|
|
The output for each instruction is composed of two fields:
|
|
@itemize @bullet
|
|
@item Address
|
|
@item Func-name
|
|
@item Offset
|
|
@item Instruction
|
|
@end itemize
|
|
Note that whatever included in the instruction field, is not manipulated
|
|
directely by Flathead, i.e. it is not possible to adjust its format.
|
|
@subsection GDB command
|
|
N.A. No direct mapping.
|
|
|
|
@subsection Example 1
|
|
Disassemble from the current PC value to PC + 20.
|
|
|
|
@example
|
|
(gdb)
|
|
-data-disassemble -s $pc -e "$pc + 20" -- 0
|
|
^done,
|
|
asm_insns={
|
|
{address="0x000107c0",func-name="main",offset="4",
|
|
inst="mov 2, %o0"},
|
|
{address="0x000107c4",func-name="main",offset="8",
|
|
inst="sethi %hi(0x11800), %o2"},
|
|
{address="0x000107c8",func-name="main",offset="12",
|
|
inst="or %o2, 0x140, %o1\t! 0x11940 <_lib_version+8>"},
|
|
{address="0x000107cc",func-name="main",offset="16",
|
|
inst="sethi %hi(0x11800), %o2"},
|
|
{address="0x000107d0",func-name="main",offset="20",
|
|
inst="or %o2, 0x168, %o4\t! 0x11968 <_lib_version+48>"}}
|
|
(gdb)
|
|
@end example
|
|
|
|
@subsection Example 2
|
|
Disassemble the whole function main. Line 32 is part of main.
|
|
@example
|
|
-data-disassemble -f basics.c -l 32 -- 0
|
|
^done,asm_insns={
|
|
{address="0x000107bc",func-name="main",offset="0",inst="save %sp, -112, %sp"},
|
|
{address="0x000107c0",func-name="main",offset="4",inst="mov 2, %o0"},
|
|
{address="0x000107c4",func-name="main",offset="8",inst="sethi %hi(0x11800), %o2"},
|
|
[...]
|
|
{address="0x0001081c",func-name="main",offset="96",inst="ret "},
|
|
{address="0x00010820",func-name="main",offset="100",inst="restore "}}
|
|
(gdb)
|
|
@end example
|
|
|
|
@subsection Example 3
|
|
Disassemble 3 instruction from the start of main.
|
|
@example
|
|
(gdb)
|
|
-data-disassemble -f basics.c -l 32 -n 3 -- 0
|
|
^done,asm_insns={
|
|
{address="0x000107bc",func-name="main",offset="0",inst="save %sp, -112, %sp"},
|
|
{address="0x000107c0",func-name="main",offset="4",inst="mov 2, %o0"},
|
|
{address="0x000107c4",func-name="main",offset="8",inst="sethi %hi(0x11800), %o2"}}
|
|
(gdb)
|
|
@end example
|
|
|
|
@subsection Example 4
|
|
Disassemble 3 instruction from the start of main in mixed mode.
|
|
@example
|
|
(gdb)
|
|
-data-disassemble -f basics.c -l 32 -n 3 -- 1
|
|
^done,asm_insns={
|
|
src_and_asm_line={line="31",
|
|
file="/kwikemart/marge/ezannoni/flathead-dev/devo/gdb/testsuite/gdb.mi/basics.c",
|
|
line_asm_insn={
|
|
{address="0x000107bc",func-name="main",offset="0",inst="save %sp, -112, %sp"}}},
|
|
|
|
src_and_asm_line={line="32",
|
|
file="/kwikemart/marge/ezannoni/flathead-dev/devo/gdb/testsuite/gdb.mi/basics.c",
|
|
line_asm_insn={
|
|
{address="0x000107c0",func-name="main",offset="4",inst="mov 2, %o0"},
|
|
{address="0x000107c4",func-name="main",offset="8",inst="sethi %hi(0x11800), %o2"}}}}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -data-evaluate-expression
|
|
Evaluate an expression. The expression could contain an inferior
|
|
function call. The function call will execute synchronously.
|
|
If the expression contains spaces, it must be enclosed in double quotes.
|
|
@subsection GDB command
|
|
print, output, gdb_eval
|
|
@subsection Example
|
|
@example
|
|
211-data-evaluate-expression A
|
|
211^done,value="1"
|
|
(gdb)
|
|
311-data-evaluate-expression &A
|
|
311^done,value="0xefffeb7c"
|
|
(gdb)
|
|
411-data-evaluate-expression A+3
|
|
411^done,value="4"
|
|
(gdb)
|
|
511-data-evaluate-expression "A + 3"
|
|
511^done,value="4"
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -data-list-changed-registers
|
|
Display a list of the registers that have changed.
|
|
@subsection GDB command
|
|
gdb_changed_register_list. This is in gdbtk only.
|
|
@subsection Example
|
|
On a PPC MBX board.
|
|
@example
|
|
(gdb)
|
|
-exec-continue
|
|
^running
|
|
|
|
(gdb)
|
|
*stopped,reason="breakpoint-hit",bkptno="1",frame=@{func="main",
|
|
args=@{@},file="try.c",line="5"@}
|
|
(gdb)
|
|
-data-list-changed-registers
|
|
^done,changed-registers=@{"0","1","2","4","5","6","7","8","9",
|
|
"10","11","13","14","15","16","17","18","19","20","21","22","23",
|
|
"24","25","26","27","28","30","31","64","65","66","67","69"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -data-list-register-names
|
|
Show a list of register names for the current target. If no arguments
|
|
are given, it shows a list of the names of all the registers. If
|
|
integer numbers are given as arguments, it will print a list of the
|
|
names corresponding to the arguments.
|
|
@subsection GDB command
|
|
gdb_regnames
|
|
@subsection Example
|
|
For the PPC MBX board:
|
|
@example
|
|
(gdb)
|
|
-data-list-register-names
|
|
^done,register-names=@{"r0","r1","r2","r3","r4","r5","r6","r7",
|
|
"r8","r9","r10","r11","r12","r13","r14","r15","r16","r17","r18",
|
|
"r19","r20","r21","r22","r23","r24","r25","r26","r27","r28","r29",
|
|
"r30","r31","f0","f1","f2","f3","f4","f5","f6","f7","f8","f9",
|
|
"f10","f11","f12","f13","f14","f15","f16","f17","f18","f19","f20",
|
|
"f21","f22","f23","f24","f25","f26","f27","f28","f29","f30","f31",
|
|
"pc","ps","cr","lr","ctr","xer"@}
|
|
(gdb)
|
|
-data-list-register-names 1 2 3
|
|
^done,register-names=@{"r1","r2","r3"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -data-list-register-values
|
|
Display the registers contents. Arguments are the format according to
|
|
which the registers contents are to be returned, and a list of numbers
|
|
specifying the registers to display. A missing list of number indicates
|
|
that the contents of all the registers must be returned.
|
|
Allowed formats are:
|
|
@itemize @bullet
|
|
@item 'x': Hexadecimal
|
|
@item 'o': Octal
|
|
@item 't': Binary
|
|
@item 'd': Decimal
|
|
@item 'r': Raw
|
|
@item 'N': Natural
|
|
@end itemize
|
|
|
|
@subsection GDB command
|
|
info reg, info all-reg AND/OR gdb_fetch_registers
|
|
@subsection Example
|
|
For a PPC MBX board. Note, line breaks are for readability only, they
|
|
don't appear in the actual output.
|
|
@example
|
|
(gdb)
|
|
-data-list-register-values r 64 65
|
|
^done,register-values=@{@{number="64",value="0xfe00a300"@},
|
|
@{number="65",value="0x00029002"@}@}
|
|
(gdb)
|
|
-data-list-register-values x
|
|
^done,register-values=@{@{number="0",value="0xfe0043c8"@},
|
|
@{number="1",value="0x3fff88"@},@{number="2",value="0xfffffffe"@},
|
|
@{number="3",value="0x0"@},@{number="4",value="0xa"@},
|
|
@{number="5",value="0x3fff68"@},@{number="6",value="0x3fff58"@},
|
|
@{number="7",value="0xfe011e98"@},@{number="8",value="0x2"@},
|
|
@{number="9",value="0xfa202820"@},@{number="10",value="0xfa202808"@},
|
|
@{number="11",value="0x1"@},@{number="12",value="0x0"@},
|
|
@{number="13",value="0x4544"@},@{number="14",value="0xffdfffff"@},
|
|
@{number="15",value="0xffffffff"@},@{number="16",value="0xfffffeff"@},
|
|
@{number="17",value="0xefffffed"@},@{number="18",value="0xfffffffe"@},
|
|
@{number="19",value="0xffffffff"@},@{number="20",value="0xffffffff"@},
|
|
@{number="21",value="0xffffffff"@},@{number="22",value="0xfffffff7"@},
|
|
@{number="23",value="0xffffffff"@},@{number="24",value="0xffffffff"@},
|
|
@{number="25",value="0xffffffff"@},@{number="26",value="0xfffffffb"@},
|
|
@{number="27",value="0xffffffff"@},@{number="28",value="0xf7bfffff"@},
|
|
@{number="29",value="0x0"@},@{number="30",value="0xfe010000"@},
|
|
@{number="31",value="0x0"@},@{number="32",value="0x0"@},
|
|
@{number="33",value="0x0"@},@{number="34",value="0x0"@},
|
|
@{number="35",value="0x0"@},@{number="36",value="0x0"@},
|
|
@{number="37",value="0x0"@},@{number="38",value="0x0"@},
|
|
@{number="39",value="0x0"@},@{number="40",value="0x0"@},
|
|
@{number="41",value="0x0"@},@{number="42",value="0x0"@},
|
|
@{number="43",value="0x0"@},@{number="44",value="0x0"@},
|
|
@{number="45",value="0x0"@},@{number="46",value="0x0"@},
|
|
@{number="47",value="0x0"@},@{number="48",value="0x0"@},
|
|
@{number="49",value="0x0"@},@{number="50",value="0x0"@},
|
|
@{number="51",value="0x0"@},@{number="52",value="0x0"@},
|
|
@{number="53",value="0x0"@},@{number="54",value="0x0"@},
|
|
@{number="55",value="0x0"@},@{number="56",value="0x0"@},
|
|
@{number="57",value="0x0"@},@{number="58",value="0x0"@},
|
|
@{number="59",value="0x0"@},@{number="60",value="0x0"@},
|
|
@{number="61",value="0x0"@},@{number="62",value="0x0"@},
|
|
@{number="63",value="0x0"@},@{number="64",value="0xfe00a300"@},
|
|
@{number="65",value="0x29002"@},@{number="66",value="0x202f04b5"@},
|
|
@{number="67",value="0xfe0043b0"@},@{number="68",value="0xfe00b3e4"@},
|
|
@{number="69",value="0x20002b03"@}@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -data-read-memory [ -o <byte-offset> ] [ -- ] <address> <word-format> <word-size> <nr-rows> <nr-cols> [ <aschar> ]
|
|
Where
|
|
@table @samp
|
|
@item <address>
|
|
An expression specifying the address of the first memory word to be
|
|
read. Complex expressions containing embedded white space should be
|
|
quoted using the C convention.
|
|
@item <word-format>
|
|
The format to be used to print the memory words. The notation is the
|
|
same as for GDB's @code{print} command.
|
|
@item <word-size>
|
|
The size of each memory word in bytes.
|
|
@item <nr-rows>
|
|
The number of rows in the output table.
|
|
@item <nr-cols>
|
|
The number of columns in the output table.
|
|
@item <aschar>
|
|
If present, indicates that each row should include an ascii dump. The
|
|
value of <aschar> is used as a padding character when a byte is not a
|
|
member of the printable ascii character set (@code{<32} or @code{>126}).
|
|
@item <byte-offset>
|
|
An offset to add to the <address> before fetching memory.
|
|
@end table
|
|
Display memory contents as a table of <nr-rows> by <nr-cols> words.
|
|
Each word being <word-size> bytes. In total @code{<nr-rows> * <nr-cols>
|
|
* <word-size>} bytes are read (returned as @code{total-bytes}. Should
|
|
less then the requested number of bytes be returned by the target, the
|
|
missing words are identified using @code{N/A}. The number of bytes read
|
|
from the target is returned in @code{nr-bytes} and the starting address
|
|
used to read memory by @code{addr}.
|
|
|
|
The address of the next/previous page or row is available in
|
|
@code{next-row} and @code{prev-row}, @code{next-page} and
|
|
@code{prev-page}.
|
|
@subsection GDB command
|
|
x AND/OR gdb_get_mem AND/OR GDBtk's memory read.
|
|
@subsection Example 1
|
|
Read six bytes of memory starting at @code{bytes+6} but then offset by
|
|
@code{-6} bytes. Format as three rows of two columns. One byte per
|
|
word. Display each word in hex.
|
|
@example
|
|
(gdb)
|
|
9-data-read-memory -o -6 -- bytes+6 x 1 3 2
|
|
9^done,addr="0x00001390",nr-bytes="6",total-bytes="6",
|
|
next-row="0x00001396",prev-row="0x0000138e",next-page="0x00001396",
|
|
prev-page="0x0000138a",memory=@{
|
|
@{addr="0x00001390",data=@{"0x00","0x01"@}@},
|
|
@{addr="0x00001392",data=@{"0x02","0x03"@}@},
|
|
@{addr="0x00001394",data=@{"0x04","0x05"@}@}@}
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 2
|
|
Read two bytes of memory starting at address @code{shorts + 64} and
|
|
display as a single word formatted in decimal.
|
|
@example
|
|
(gdb)
|
|
5-data-read-memory shorts+64 d 2 1 1
|
|
5^done,addr="0x00001510",nr-bytes="2",total-bytes="2",
|
|
next-row="0x00001512",prev-row="0x0000150e",
|
|
next-page="0x00001512",prev-page="0x0000150e",memory=@{
|
|
@{addr="0x00001510",data=@{"128"@}@}@}
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 3
|
|
Read thirty two bytes of memory starting at @code{bytes+16} and format
|
|
as eight rows of four columns. Include a string encoding with @code{x}
|
|
used as the non-printable character.
|
|
@example
|
|
(gdb)
|
|
4-data-read-memory bytes+16 x 1 8 4 x
|
|
4^done,addr="0x000013a0",nr-bytes="32",total-bytes="32",
|
|
next-row="0x000013c0",prev-row="0x0000139c",
|
|
next-page="0x000013c0",prev-page="0x00001380",memory=@{
|
|
@{addr="0x000013a0",data=@{"0x10","0x11","0x12","0x13"@},ascii="xxxx"@},
|
|
@{addr="0x000013a4",data=@{"0x14","0x15","0x16","0x17"@},ascii="xxxx"@},
|
|
@{addr="0x000013a8",data=@{"0x18","0x19","0x1a","0x1b"@},ascii="xxxx"@},
|
|
@{addr="0x000013ac",data=@{"0x1c","0x1d","0x1e","0x1f"@},ascii="xxxx"@},
|
|
@{addr="0x000013b0",data=@{"0x20","0x21","0x22","0x23"@},ascii=" !\"#"@},
|
|
@{addr="0x000013b4",data=@{"0x24","0x25","0x26","0x27"@},ascii="$%&'"@},
|
|
@{addr="0x000013b8",data=@{"0x28","0x29","0x2a","0x2b"@},ascii="()*+"@},
|
|
@{addr="0x000013bc",data=@{"0x2c","0x2d","0x2e","0x2f"@},ascii=",-./"@}@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -display-delete <number>
|
|
Delete the display <number>.
|
|
@subsection GDB command
|
|
delete display
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -display-disable <number>
|
|
Disable display <number>
|
|
@subsection GDB command
|
|
disable display
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -display-enable <number>
|
|
Enable display <number>
|
|
@subsection GDB command
|
|
enable display
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -display-insert <expression>
|
|
Display <expression> every time the program stops.
|
|
@subsection GDB command
|
|
display
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -display-list
|
|
List the displays. Do not show the current values.
|
|
@subsection GDB command
|
|
info display
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -environment-cd <pathdir>
|
|
Set GDB's working directory.
|
|
@subsection GDB command
|
|
cd
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-environment-cd /kwikemart/marge/ezannoni/flathead-dev/devo/gdb
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -environment-directory <pathdir>
|
|
Add directory <pathdir> to beginning of search path for source files.
|
|
@subsection GDB command
|
|
dir
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-environment-directory /kwikemart/marge/ezannoni/flathead-dev/devo/gdb
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -environment-path @{ <pathdir> @}+
|
|
Add directories to beginning of search path for object files.
|
|
@subsection GDB command
|
|
path
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-environment-path /kwikemart/marge/ezannoni/flathead-dev/ppc-eabi/gdb
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -environment-pwd
|
|
Show the current working directory
|
|
@subsection GDB command
|
|
pwd
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-environment-pwd
|
|
~Working directory /kwikemart/marge/ezannoni/flathead-dev/devo/gdb.
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Program control
|
|
|
|
@section Program termination
|
|
As a result of execution, the inferior program can run to completion, if
|
|
it doesn't encouter any breakpoints. In this case the ouput will
|
|
include an exit code, if the program has exited exceptionally.
|
|
@subsection Example 1
|
|
Program exited normally:
|
|
@example
|
|
(gdb)
|
|
-exec-run
|
|
^running
|
|
(gdb)
|
|
x = 55
|
|
*stopped,reason="exited-normally"
|
|
(gdb)
|
|
@end example
|
|
|
|
@subsection Example 2
|
|
Program exited exceptionally:
|
|
@example
|
|
(gdb)
|
|
-exec-run
|
|
^running
|
|
(gdb)
|
|
x = 55
|
|
*stopped,reason="exited",exit-code="01"
|
|
(gdb)
|
|
@end example
|
|
|
|
Another way the program can terminate is if it receives a signal like SIGINT.
|
|
@subsection Example
|
|
Program exited with signal (for a more complete example, see the exec-interrupt command).
|
|
@example
|
|
(gdb)
|
|
*stopped,reason="exited-signalled",signal-name="SIGINT",signal-meaning="Interrupt"
|
|
@end example
|
|
|
|
|
|
@section -exec-abort
|
|
Kill the inferior running program.
|
|
|
|
@subsection GDB command
|
|
kill
|
|
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -exec-arguments
|
|
Set the inferior program arguments, to be used in the next -exec-run.
|
|
|
|
@subsection GDB command
|
|
set args
|
|
|
|
@subsection Example
|
|
Don't have it around.
|
|
|
|
@section -exec-continue
|
|
Asynchronous command. Resumes the execution of the inferior program until
|
|
a breakpoint is encountered, or the inferior exits.
|
|
|
|
@subsection GDB command
|
|
continue
|
|
|
|
@subsection Example
|
|
@example
|
|
-exec-continue
|
|
^running
|
|
(gdb)
|
|
@@Hello world
|
|
*stopped,reason="breakpoint-hit",bkptno="2",frame=@{func="foo",args=@{@},
|
|
file="hello.c",line="13"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -exec-finish
|
|
Asynchronous command. Resumes the execution of the inferior program until the
|
|
current function is exited. Displays the results returned by the function (???).
|
|
|
|
@subsection GDB command
|
|
finish
|
|
|
|
@subsection Example 1
|
|
Function returning 'void'.
|
|
@example
|
|
-exec-finish
|
|
^running
|
|
(gdb)
|
|
@@hello from foo
|
|
*stopped,reason="function-finished",frame=@{func="main",args=@{@},
|
|
file="hello.c",line="7"@}
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 2
|
|
Function returning other than 'void'. The name of the internal gdb variable storing the
|
|
result is printed, and the value itself.
|
|
@example
|
|
-exec-finish
|
|
^running
|
|
(gdb)
|
|
*stopped,reason="function-finished",frame=@{addr="0x000107b0",func="foo",
|
|
args=@{@{name="a",value="1"@},@{name="b",value="9"@}@},file="recursive2.c",line="14"@},
|
|
gdb-result-var="$1",return-value="0"
|
|
(gdb)
|
|
|
|
@end example
|
|
@section -exec-interrupt
|
|
Asynchronous command. Interrupts the background execution of the target.
|
|
Note how the token associated with the stop message is the one for the
|
|
execution command that has been interrupted. The token for the interrupt
|
|
itself only appears in the '^done' output. If the user is trying to
|
|
interrupt a non running program, an error message will be printed.
|
|
@subsection GDB command
|
|
interrupt
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
111-exec-continue
|
|
111^running
|
|
|
|
(gdb)
|
|
222-exec-interrupt
|
|
222^done
|
|
(gdb)
|
|
111*stopped,signal-name="SIGINT",signal-meaning="Interrupt",
|
|
frame=@{addr="0x00010140",func="foo",args=@{@},file="try.c",line="13"@}
|
|
(gdb)
|
|
|
|
(gdb)
|
|
-exec-interrupt
|
|
^error,msg="mi_cmd_exec_interrupt: Inferior not executing."
|
|
(gdb)
|
|
|
|
@end example
|
|
|
|
@section -exec-next
|
|
Asynchronous command. Resumes execution of the inferior program, stopping
|
|
when the beginning of the next source line is reached.
|
|
|
|
@subsection GDB command
|
|
next
|
|
|
|
@subsection Example
|
|
@example
|
|
-exec-next
|
|
^running
|
|
(gdb)
|
|
*stopped,reason="end-stepping-range",line="8",file="hello.c"
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -exec-next-instruction
|
|
Asynchronous command. Executes one machine instruction. If the
|
|
instruction is a function call continues until the function returns. If
|
|
the program stops at an instruction in the middle of a source line, the
|
|
address will be printed as well.
|
|
@subsection GDB command
|
|
nexti
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-exec-next-instruction
|
|
^running
|
|
|
|
(gdb)
|
|
*stopped,reason="end-stepping-range",
|
|
addr="0x000100d4",line="5",file="hello.c"
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -exec-return
|
|
Makes current function return immediately. Doesn't execute the inferior.
|
|
It displays the new current frame.
|
|
|
|
@subsection GDB command
|
|
return
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
200-break-insert callee4
|
|
200^done,bkpt=@{number="1",addr="0x00010734",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="8"@}
|
|
(gdb)
|
|
000-exec-run
|
|
000^running
|
|
(gdb)
|
|
000*stopped,reason="breakpoint-hit",bkptno="1",
|
|
frame=@{func="callee4",args=@{@},
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="8"@}
|
|
(gdb)
|
|
205-break-delete
|
|
205^done
|
|
(gdb)
|
|
111-exec-return
|
|
111^done,frame=@{level="0 ",func="callee3",
|
|
args=@{@{name="strarg",value="0x11940 \"A string argument.\""@}@},
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="18"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -exec-run
|
|
Asynchronous command. Starts execution of the inferior from the
|
|
beginning. The inferior executes until either a breakpoint is
|
|
encountered or the program exits.
|
|
|
|
@subsection GDB command
|
|
run
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-break-insert main
|
|
^done,bkpt=@{number="1",addr="0x0001072c",file="recursive2.c",line="4"@}
|
|
(gdb)
|
|
-exec-run
|
|
^running
|
|
(gdb)
|
|
*stopped,reason="breakpoint-hit",bkptno="1",
|
|
frame=@{func="main",args=@{@},file="recursive2.c",line="4"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
|
|
@section -exec-show-arguments
|
|
Print the arguments of the program.
|
|
@subsection GDB command
|
|
show args
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@c @section -exec-signal
|
|
|
|
@section -exec-step
|
|
Asynchronous command. Resumes execution of the inferior program, stopping
|
|
when the beginning of the next source line is reached, if the next
|
|
source line is not a function call. If it is, stop at the first
|
|
instruction of the called function.
|
|
|
|
@subsection GDB command
|
|
step
|
|
|
|
@subsection Example 1
|
|
Stepping into a function:
|
|
@example
|
|
-exec-step
|
|
^running
|
|
(gdb)
|
|
*stopped,reason="end-stepping-range",frame=@{func="foo",args=@{@{name="a",value="10"@},
|
|
@{name="b",value="0"@}@},file="recursive2.c",line="11"@}
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 2
|
|
Regular stepping
|
|
@example
|
|
-exec-step
|
|
^running
|
|
(gdb)
|
|
*stopped,reason="end-stepping-range",line="14",file="recursive2.c"
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -exec-step-instruction
|
|
Asynchronous command. Resumes the inferior which executes one machine
|
|
instruction. The output, once stop, will vary depend on whether we have
|
|
stopped in the middle of a source line or not. In the former case, the
|
|
address at which the program stopped will be printed as well.
|
|
|
|
@subsection GDB command
|
|
stepi
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-exec-step-instruction
|
|
^running
|
|
|
|
(gdb)
|
|
*stopped,reason="end-stepping-range",
|
|
frame=@{func="foo",args=@{@},file="try.c",line="10"@}
|
|
(gdb)
|
|
-exec-step-instruction
|
|
^running
|
|
|
|
(gdb)
|
|
*stopped,reason="end-stepping-range",
|
|
frame=@{addr="0x000100f4",func="foo",args=@{@},file="try.c",line="10"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -exec-until
|
|
Asynchronous command. Executes the inferior until the location specified
|
|
in the argument is reached. If there is no argument, the inferior
|
|
executes until a source line greater than the current one is reached.
|
|
The reason for stopping in this case will be ``location-reached''.
|
|
@subsection GDB command
|
|
until
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-exec-until recursive2.c:6
|
|
^running
|
|
(gdb)
|
|
x = 55
|
|
*stopped,reason="location-reached",frame=@{func="main",args=@{@},
|
|
file="recursive2.c",line="6"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -file-clear
|
|
Is this going away????
|
|
|
|
@section -file-exec-and-symbols <file>
|
|
Specify the executable file to be debugged. This file is the one from
|
|
which the symbol table is also read. If no file is specified, it clears
|
|
the executable and symbol information. If breakpoints are set when
|
|
using this command with no arguments, gdb will produce errors. No output
|
|
is produced, except a completion notification.
|
|
@subsection GDB command
|
|
file <file>
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-file-exec-and-symbols /kwikemart/marge/ezannoni/TRUNK/mbx/hello.mbx
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -file-exec-file <file>
|
|
Specify the executable file to be debugged. The symbol table is not read
|
|
from this file. If used without argument gdb clears the information
|
|
about the executable file. No output is produced, except a completion
|
|
notification.
|
|
@subsection GDB command
|
|
exec-file <file>
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-file-exec-file /kwikemart/marge/ezannoni/TRUNK/mbx/hello.mbx
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -file-list-exec-sections
|
|
List the sections of the current executable file.
|
|
@subsection GDB command
|
|
info file (only part of it), gdb_load_info
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -file-list-exec-source-files
|
|
List the source files for the current executable.
|
|
@subsection GDB command
|
|
gdb_listfiles (gdbtk).
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -file-list-shared-libraries
|
|
List the shared libraries in the program.
|
|
@subsection GDB command
|
|
info shared
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -file-list-symbol-files
|
|
List symbol files.
|
|
@subsection GDB command
|
|
info file (part of it).
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -file-symbol-file <file>
|
|
Read symbol table info from the file specified as argument. Used
|
|
without arguments clears gdb's symbol table info. No output is
|
|
produced, except a completion notification.
|
|
@subsection GDB command
|
|
symbol-file <file>
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-file-symbol-file /kwikemart/marge/ezannoni/TRUNK/mbx/hello.mbx
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Misc GDB commands
|
|
|
|
@c @section -gdb-complete
|
|
|
|
@section -gdb-exit
|
|
|
|
Exit GDB immediately.
|
|
@subsection GDB command
|
|
Approximately corresponds to 'quit'.
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-gdb-exit
|
|
@end example
|
|
|
|
@section -gdb-set
|
|
Set an internal GDB variable.
|
|
IS THIS A DOLLAR VARIABLE? OR SOMETHING LIKE ANNOTATE ?????
|
|
|
|
@subsection GDB command
|
|
set
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-gdb-set $foo=3
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -gdb-show
|
|
Show the current value of a GDB variable.
|
|
|
|
@subsection GDB command
|
|
show
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-gdb-show annotate
|
|
^done,value="0"
|
|
(gdb)
|
|
@end example
|
|
|
|
@c @section -gdb-source
|
|
|
|
@section -gdb-version
|
|
Show version information for gdb. Used in testing mostly.
|
|
|
|
@subsection GDB command
|
|
No equivalent.
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-gdb-version
|
|
~GNU gdb 4.18.1 HEADLESS
|
|
~Copyright 1998 Free Software Foundation, Inc.
|
|
~GDB is free software, covered by the GNU General Public License, and you are
|
|
~welcome to change it and/or distribute copies of it under certain conditions.
|
|
~Type "show copying" to see the conditions.
|
|
~There is absolutely no warranty for GDB. Type "show warranty" for details.
|
|
~This GDB was configured as "--host=sparc-sun-solaris2.5.1 --target=ppc-eabi".
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Kod Commands
|
|
|
|
The Kod commands are not implemented.
|
|
|
|
@c @section -kod-info
|
|
|
|
@c @section -kod-list
|
|
|
|
@c @section -kod-list-object-types
|
|
|
|
@c @section -kod-show
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Memory Overlay Commands
|
|
|
|
the memory overlay commands not implemented.
|
|
|
|
@c @section -overlay-auto
|
|
|
|
@c @section -overlay-list-mapping-state
|
|
|
|
@c @section -overlay-list-overlays
|
|
|
|
@c @section -overlay-map
|
|
|
|
@c @section -overlay-off
|
|
|
|
@c @section -overlay-on
|
|
|
|
@c @section -overlay-unmap
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Signal Handling Commands
|
|
|
|
Signal handling commands are not implemented.
|
|
|
|
@c @section -signal-handle
|
|
|
|
@c @section -signal-list-handle-actions
|
|
|
|
@c @section -signal-list-signal-types
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Stack manipulation commands
|
|
|
|
@section -stack-info-frame
|
|
Get info on the current frame.
|
|
@subsection GDB command
|
|
info frame or frame (w/o args).
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -stack-info-depth [max-depth]
|
|
Return the depth of the stack. If the integer argument <max-depth> is specified, do not
|
|
count beyond max-depth frames.
|
|
@subsection GDB command
|
|
No equivalent.
|
|
@subsection Example
|
|
For a stack with frame levels 0 through 11:
|
|
@example
|
|
(gdb)
|
|
-stack-info-depth
|
|
^done,depth="12"
|
|
(gdb)
|
|
-stack-info-depth 4
|
|
^done,depth="4"
|
|
(gdb)
|
|
-stack-info-depth 12
|
|
^done,depth="12"
|
|
(gdb)
|
|
-stack-info-depth 11
|
|
^done,depth="11"
|
|
(gdb)
|
|
-stack-info-depth 13
|
|
^done,depth="12"
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -stack-list-arguments <show-values> [ <low-frame> <high-frame> ]
|
|
Display a list of the arguments for the frames between low-frame and
|
|
high-frame (inclusive). If low-frame and high-frame are not provided, it
|
|
will list the arguments for the whole stack. The show-values argument
|
|
must have a value of 0 or 1. A value of 0 means that only the names of
|
|
the arguments are listed, a value of 1 means that both names and values
|
|
of the argumetns are printed.
|
|
@subsection GDB command
|
|
gdb_get_args (partially).
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-stack-list-frames
|
|
^done,
|
|
stack=@{
|
|
frame=@{level="0 ",addr="0x00010734",func="callee4",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="8"@},
|
|
frame=@{level="1 ",addr="0x0001076c",func="callee3",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="17"@},
|
|
frame=@{level="2 ",addr="0x0001078c",func="callee2",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="22"@},
|
|
frame=@{level="3 ",addr="0x000107b4",func="callee1",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="27"@},
|
|
frame=@{level="4 ",addr="0x000107e0",func="main",
|
|
file="../../../devo/gdb/testsuite/gdb.mi/basics.c",line="32"@}@}
|
|
(gdb)
|
|
-stack-list-arguments 0
|
|
^done,
|
|
stack-args=@{
|
|
frame=@{level="0",args=@{@}@},
|
|
frame=@{level="1",args=@{name="strarg"@}@},
|
|
frame=@{level="2",args=@{name="intarg",name="strarg"@}@},
|
|
frame=@{level="3",args=@{name="intarg",name="strarg",name="fltarg"@}@},
|
|
frame=@{level="4",args=@{@}@}@}
|
|
(gdb)
|
|
-stack-list-arguments 1
|
|
^done,
|
|
stack-args=@{
|
|
frame=@{level="0",args=@{@}@},
|
|
frame=@{level="1",args=@{@{name="strarg",value="0x11940 \"A string argument.\""@}@}@},
|
|
frame=@{level="2",args=@{
|
|
@{name="intarg",value="2"@},
|
|
@{name="strarg",value="0x11940 \"A string argument.\""@}@}@},
|
|
@{frame=@{level="3",args=@{
|
|
@{name="intarg",value="2"@},
|
|
@{name="strarg",value="0x11940 \"A string argument.\""@},
|
|
@{name="fltarg",value="3.5"@}@}@},
|
|
frame=@{level="4",args=@{@}@}@}
|
|
(gdb)
|
|
-stack-list-arguments 0 2 2
|
|
^done,stack-args=@{frame=@{level="2",args=@{name="intarg",name="strarg"@}@}@}
|
|
(gdb)
|
|
-stack-list-arguments 1 2 2
|
|
^done,stack-args=@{frame=@{level="2",
|
|
args=@{@{name="intarg",value="2"@},
|
|
@{name="strarg",value="0x11940 \"A string argument.\""@}@}@}@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@c @section -stack-list-exception-handlers
|
|
|
|
@section -stack-list-frames [ <low-frame> <high-frame> ]
|
|
List the frames currently on the stack. For each frame it displays the following info:
|
|
@table @samp
|
|
@item <level>
|
|
The frame number, 0 being the topmost frame, i.e. the innermost function.
|
|
@item <addr>
|
|
Pc value for that frame.
|
|
@item <func>
|
|
Function name
|
|
@item <file>
|
|
File name of the source fle where the function lives.
|
|
@item <line>
|
|
Line number corresponding to the pc.
|
|
@end table
|
|
|
|
If invoked without arguments, it prints a backtrace for the whole stack.
|
|
If given two integer arguments it shows the frames whose levels are
|
|
between the two arguments (inclusive). If the two arguments are equal,
|
|
it shows the single frame at the corresponding level.
|
|
|
|
@subsection GDB command
|
|
backtrace or where
|
|
|
|
@subsection Example 1
|
|
Whole stack backtrace.
|
|
|
|
@example
|
|
(gdb)
|
|
-stack-list-frames
|
|
^done,stack=
|
|
@{frame=@{level="0 ",addr="0x0001076c",func="foo",file="recursive2.c",line="11"@},
|
|
frame=@{level="1 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="2 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="3 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="4 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="5 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="6 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="7 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="8 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="9 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="10",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="11",addr="0x00010738",func="main",file="recursive2.c",line="4"@}@}
|
|
|
|
(gdb)
|
|
@end example
|
|
|
|
@subsection Example 2
|
|
Show frames between low_frame and high_frame.
|
|
@example
|
|
(gdb)
|
|
-stack-list-frames 3 5
|
|
^done,stack=
|
|
@{frame=@{level="3 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="4 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@},
|
|
frame=@{level="5 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@}@}
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 3
|
|
Show one single frame.
|
|
@example
|
|
(gdb)
|
|
-stack-list-frames 3 3
|
|
^done,stack=
|
|
@{frame=@{level="3 ",addr="0x000107a4",func="foo",file="recursive2.c",line="14"@}@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -stack-list-locals <print-values>
|
|
Display the local variables names for the current frame. With an
|
|
argument of 0 prints only the names of the variables, with argument of 1
|
|
prints also the values.
|
|
@subsection GDB command
|
|
gdb_get_locals
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-stack-list-locals 0
|
|
^done,locals=@{name="A",name="B",name="C"@}
|
|
(gdb)
|
|
-stack-list-locals 1
|
|
^done,locals=@{@{name="A",value="1"@},@{name="B",value="2"@},@{name="C",value="3"@}@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -stack-select-frame <framenum>
|
|
Change the current frame. Select a different frame on the stack.
|
|
@subsection GDB command
|
|
frame (part), up, down
|
|
AND/OR select-frame,
|
|
up-silent, down-silent
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-stack-select-frame 2
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Symbol query commands
|
|
|
|
@section -symbol-info-address <symbol>
|
|
Describe where <symbol> is stored.
|
|
@subsection GDB command
|
|
Info address
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-info-file
|
|
Show the file for the symbol [NOT SURE]
|
|
@subsection GDB command
|
|
gdb_filnd_file (gdbtk).
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-info-function
|
|
Show which function the symbol lives in. [NOT SURE]
|
|
@subsection GDB command
|
|
gdb_get_function (gdbtk)
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-info-line
|
|
Core addresses of the code for a source line.
|
|
@subsection GDB command
|
|
info line , gdb_get_line, gdb_get_file
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-info-symbol
|
|
Describe what symbol is at location ADDR [NOT SURE]
|
|
@subsection GDB command
|
|
info symbol
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-list-functions
|
|
List the functions in the executable.
|
|
@subsection GDB command
|
|
info functions, gdb_listfunc, gdb_search
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-list-types
|
|
List all the type names.
|
|
@subsection GDB command
|
|
info types, gdb_search
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-list-variables
|
|
List all global and static variable names.
|
|
@subsection GDB command
|
|
Info variables, gdb_search
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-locate
|
|
@subsection GDB command
|
|
gdb_loc (gdbtk)
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -symbol-type
|
|
Show type of a variable.
|
|
@subsection GDB command
|
|
ptype, gdb_obj_variable
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Target manipulation commands
|
|
|
|
@section -target-attach
|
|
Attach to a process or file outside of GDB.
|
|
@subsection GDB command
|
|
attach
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -target-compare-sections
|
|
Compare section data on target to the exec file.
|
|
@subsection GDB command
|
|
compare-sections
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -target-detach
|
|
Disconnect from the remote target.
|
|
No output.
|
|
|
|
@subsection GDB command
|
|
detach
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-target-detach
|
|
^done
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -target-download
|
|
Loads the executable onto the remote target.
|
|
It prints out an update message every half second, which includes the fields:
|
|
@itemize @bullet
|
|
@item section: The name of the section.
|
|
@item section-sent: The size of what has been sent so far for that section.
|
|
@item section-size: The size of the section.
|
|
@item total-sent: The total size of what was sent so far (the current and the previous sections).
|
|
@item total-size: The size of the overall executable to download.
|
|
@end itemize
|
|
Each message is sent as status record.
|
|
|
|
In addition it prints the name and size of the sections, as they are
|
|
downloaded. These messages include the fields:
|
|
@itemize @bullet
|
|
@item section: The name of the section.
|
|
@item section-size: The size of the section.
|
|
@item total-size: The size of the overall executable to download.
|
|
@end itemize
|
|
At the end a summary is printed.
|
|
@subsection GDB command
|
|
load
|
|
|
|
@subsection Example
|
|
Note: Each status message appears on a single line. Here the messages
|
|
have been broken down, so they can fit into a page.
|
|
@example
|
|
(gdb)
|
|
-target-download
|
|
+download,@{section=".text",section-size="6668",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="512",section-size="6668",
|
|
total-sent="512",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="1024",section-size="6668",
|
|
total-sent="1024",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="1536",section-size="6668",
|
|
total-sent="1536",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="2048",section-size="6668",
|
|
total-sent="2048",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="2560",section-size="6668",
|
|
total-sent="2560",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="3072",section-size="6668",
|
|
total-sent="3072",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="3584",section-size="6668",
|
|
total-sent="3584",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="4096",section-size="6668",
|
|
total-sent="4096",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="4608",section-size="6668",
|
|
total-sent="4608",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="5120",section-size="6668",
|
|
total-sent="5120",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="5632",section-size="6668",
|
|
total-sent="5632",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="6144",section-size="6668",
|
|
total-sent="6144",total-size="9880"@}
|
|
+download,@{section=".text",section-sent="6656",section-size="6668",
|
|
total-sent="6656",total-size="9880"@}
|
|
+download,@{section=".init",section-size="28",total-size="9880"@}
|
|
+download,@{section=".fini",section-size="28",total-size="9880"@}
|
|
+download,@{section=".data",section-size="3156",total-size="9880"@}
|
|
+download,@{section=".data",section-sent="512",section-size="3156",
|
|
total-sent="7236",total-size="9880"@}
|
|
+download,@{section=".data",section-sent="1024",section-size="3156",
|
|
total-sent="7748",total-size="9880"@}
|
|
+download,@{section=".data",section-sent="1536",section-size="3156",
|
|
total-sent="8260",total-size="9880"@}
|
|
+download,@{section=".data",section-sent="2048",section-size="3156",
|
|
total-sent="8772",total-size="9880"@}
|
|
+download,@{section=".data",section-sent="2560",section-size="3156",
|
|
total-sent="9284",total-size="9880"@}
|
|
+download,@{section=".data",section-sent="3072",section-size="3156",
|
|
total-sent="9796",total-size="9880"@}
|
|
^done,address="0x10004",load-size="9880",transfer-rate="6586",write-rate="429"
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -target-exec-status
|
|
Provide information on the state of the target. Whether it is running or not, for instance.
|
|
@subsection GDB command
|
|
No equivalent
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -target-list-available-targets
|
|
List the possible targets to connect to.
|
|
@subsection GDB command
|
|
help target
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -target-list-current-targets
|
|
What the current target is.
|
|
@subsection GDB command
|
|
info file (part of it).
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -target-list-parameters
|
|
????
|
|
@subsection GDB command
|
|
No equivalent
|
|
@subsection Example
|
|
N.A.
|
|
|
|
@section -target-select
|
|
Connect GDB to the remote target.
|
|
It takes two args:
|
|
|
|
-target-select <type> <parameters>.
|
|
|
|
Where:
|
|
|
|
@table @samp
|
|
@item <type>
|
|
The type of target, for instance async, remote, etc.
|
|
@item <parameters>
|
|
Device names, host names and the like.
|
|
@end table
|
|
The output is a connection notification, followed by the address at
|
|
which the target program is, in the following form:
|
|
^connected,addr="<address>",func="<function name>",args=@{<arg list>@}
|
|
|
|
@subsection GDB command
|
|
target
|
|
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-target-select async /dev/ttya
|
|
^connected,addr="0xfe00a300",func="??",args=@{@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Thread commands
|
|
|
|
@section -thread-info
|
|
@subsection GDB command
|
|
@subsection Example
|
|
|
|
@section -thread-list-all-threads
|
|
@subsection GDB command
|
|
@subsection Example
|
|
|
|
@section -thread-list-ids
|
|
Produces a list of the currently known gdb thread ids. At the end of the
|
|
list it also prints the toal number of such threads.
|
|
@subsection GDB command
|
|
None equivalent. (Maybe part of info threads).
|
|
@subsection Example 1
|
|
No threads present, besides the main process.
|
|
@example
|
|
(gdb)
|
|
-thread-list-ids
|
|
^done,thread-ids=@{@},number-of-threads="0"
|
|
(gdb)
|
|
@end example
|
|
@subsection Example 2
|
|
Several threads.
|
|
@example
|
|
(gdb)
|
|
-thread-list-ids
|
|
^done,thread-ids=@{thread-id="3",thread-id="2",thread-id="1"@},
|
|
number-of-threads="3"
|
|
(gdb)
|
|
@end example
|
|
|
|
@section -thread-select <threadnum>
|
|
Make <threadnum> the current thread. It prints the number of the new
|
|
current thread, and the topmost frame for that thread.
|
|
@subsection GDB command
|
|
thread
|
|
@subsection Example
|
|
@example
|
|
(gdb)
|
|
-exec-next
|
|
^running
|
|
(gdb)
|
|
*stopped,reason="end-stepping-range",thread-id="2",line="187",
|
|
file="../../../devo/gdb/testsuite/gdb.threads/linux-dp.c"
|
|
(gdb)
|
|
-thread-list-ids
|
|
^done,
|
|
thread-ids={thread-id="3",thread-id="2",thread-id="1"},
|
|
number-of-threads="3"
|
|
(gdb)
|
|
-thread-select 3
|
|
^done,new-thread-id="3",
|
|
frame=@{level="0 ",func="vprintf",
|
|
args=@{@{name="format",value="0x8048e9c \"%*s%c %d %c\\n\""@},
|
|
@{name="arg",value="0x2"@}@},file="vprintf.c",line="31"@}
|
|
(gdb)
|
|
@end example
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Tracepoint Commands
|
|
|
|
The tracepoint commands are not implemented.
|
|
|
|
@c @section -trace-actions
|
|
|
|
@c @section -trace-delete
|
|
|
|
@c @section -trace-disable
|
|
|
|
@c @section -trace-dump
|
|
|
|
@c @section -trace-enable
|
|
|
|
@c @section -trace-exists
|
|
|
|
@c @section -trace-find
|
|
|
|
@c @section -trace-frame-number
|
|
|
|
@c @section -trace-info
|
|
|
|
@c @section -trace-insert
|
|
|
|
@c @section -trace-list
|
|
|
|
@c @section -trace-pass-count
|
|
|
|
@c @section -trace-save
|
|
|
|
@c @section -trace-start
|
|
|
|
@c @section -trace-stop
|
|
|
|
|
|
@c %%%%%%%%%%%%%%%%%%%%%%%%%%%% CHAPTER %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@chapter Variable Objects
|
|
|
|
@section Motivation
|
|
|
|
For the implementation of a variable debugger window (locals, watched
|
|
expressions, etc.), we are proposing the adaptation of the existent code
|
|
used by Insight.
|
|
|
|
The two main reason for that are:
|
|
|
|
@enumerate 1
|
|
@item
|
|
It has been proven in practice (it is already on it's second generation)
|
|
@item
|
|
It will shorten development time (needless to say how important it is
|
|
now)
|
|
@end enumerate
|
|
|
|
The original interface was designed to be used by Tcl code, so it was
|
|
slightly changed so it can be used through flathead. This document
|
|
describes the flathead operations that will be available and gives some
|
|
hints about its use.
|
|
|
|
@emph{Note}: In addition to the set of operations described here, we
|
|
expect the GUI implementation of a variable window to require, at least,
|
|
the following operations:
|
|
@itemize bullet
|
|
@item -gdb-show output-radix
|
|
@item -stack-list-arguments
|
|
@item -stack-list-locals
|
|
@item -stack-select-frame
|
|
@end itemize
|
|
|
|
@section Introduction
|
|
|
|
The basic idea behind variable objects is the creation of a named object
|
|
to represent a variable, an expression, a memory location or even a CPU
|
|
register. For each object created, a set of operations is available for
|
|
examining or changing its properties.
|
|
|
|
Furthermore, complex data types, such as C structures, are represented
|
|
in a tree format. For instance, the struct type variable is the root
|
|
and the children will represent the struct members. If a children is
|
|
itself of a complex type, it will also have children of its own.
|
|
Appropriate language differences are handled for C, C++ and Java.
|
|
|
|
When returning the actual values of the objects, this facility allows
|
|
for the individual selection of the display format used in the result
|
|
creation. It can be chosen among: binary, decimal, hexadecimal, octal
|
|
and natural. Natural refers to the a default format automatically chosen
|
|
based on the variable type (like decimal for int, hex for pointers,
|
|
etc.).
|
|
|
|
The following is the complete set of flathead operations defined to
|
|
access this functionality:
|
|
|
|
@multitable @columnfractions .3 .6
|
|
@item @strong{Operation}
|
|
@tab @strong{Description}
|
|
|
|
@item -var-create
|
|
@tab create a variable object
|
|
@item -var-delete
|
|
@tab delete the variable object and its children
|
|
@item -var-set-format
|
|
@tab set the display format of this variable
|
|
@item -var-show-format
|
|
@tab show the display format of this variable
|
|
@item -var-info-num-children
|
|
@tab tells how many children this object has
|
|
@item -var-list-children
|
|
@tab return a list of the object's children
|
|
@item -var-info-type
|
|
@tab show the type of this variable object
|
|
@item -var-info-expression
|
|
@tab print what this variable object represents
|
|
@item -var-show-attributes
|
|
@tab is this variable editable? does it exist here?
|
|
@item -var-evaluate-expression
|
|
@tab get the value of this variable
|
|
@item -var-assign
|
|
@tab set the value of this variable
|
|
@item -var-update
|
|
@tab update the variable and its children
|
|
@end multitable
|
|
|
|
In the next section we describe each operation in detail and suggest how
|
|
it can be used.
|
|
|
|
|
|
@section Operations Description And Use
|
|
|
|
@subsection -var-create @{<name> | '-'@} @{<frame-addr> | '*'@} <expression>
|
|
|
|
This operation creates a variable object, which allows the monitoring of
|
|
a variable, the result of an expression, a memory cell or a CPU
|
|
register.
|
|
|
|
The <name> parameter is the string by which the object can be
|
|
referenced. It must be unique. If '-' is specified, the varobj system
|
|
will generate a string "varNNNNNN" automatically. It will be unique
|
|
provided that one does not specify <name> on that format. The command
|
|
fails if a duplicate name is found.
|
|
|
|
The frame under which the expression should be evaluated can be
|
|
specified. A '*' indicates that the current frame should be used.
|
|
|
|
Expression is any expression valid on the current language set (must not
|
|
begin with '*') or: *<addr> - The address of a memory cell
|
|
*<addr>-<addr> - An memory address range (TBD) $<regname> - A CPU
|
|
register
|
|
|
|
This operation returns the name, number of children and the type of the
|
|
object created. Type is returned as a string as the ones generated by
|
|
gdb CLI.
|
|
|
|
name="<name>",numchild="N",type="<type>"
|
|
|
|
@subsection -var-delete <name>
|
|
|
|
Deletes a previously created variable object and all of it's children.
|
|
|
|
Returns an error if the object <name> is not found.
|
|
|
|
@subsection -var-set-format <name> <format-spec>
|
|
|
|
Sets the output format for the value of the object.
|
|
|
|
<format-spec> = @{binary | decimal | hexadecimal | octal | natural@}
|
|
|
|
@subsection -var-show-format <name>
|
|
|
|
Returns the format used to display the value of the object.
|
|
|
|
format="<format-spec>"
|
|
|
|
@subsection -var-info-num-children <name>
|
|
|
|
Returns the number of children of a variable object.
|
|
|
|
numchild="N"
|
|
|
|
@subsection -var-list-children <name>
|
|
|
|
Returns a list of the children of the specified variable object.
|
|
|
|
numchild="N",children=@{@{name="<name>",numchild="N",type="<type>"@},(repeats N times)@}
|
|
|
|
@subsection -var-info-type <name>
|
|
|
|
Returns the type of the specified variable. The type is returned as a
|
|
string in the same format as it is output by gdb's CLI.
|
|
|
|
type="<type>"
|
|
|
|
@subsection -var-info-expression <name>
|
|
|
|
Returns what is represented by the specified variable object.
|
|
|
|
lang="<lang-spec>",exp="<expression>"
|
|
|
|
where <lang-spec> = @{"C" | "C++" | "Java"@}
|
|
|
|
@subsection -var-show-attributes <name>
|
|
|
|
List attributes of the specified variable object.
|
|
|
|
status="<attr>[,<attr>]*"
|
|
|
|
where <attr> = @{ @{ editable | noneditable @} | TBD @}
|
|
|
|
@subsection -var-evaluate-expression <name>
|
|
|
|
Evaluates the expression that is represented by the specified variable
|
|
object and returns its value as a string in the current format specified
|
|
for the object.
|
|
|
|
value="<value>"
|
|
|
|
@subsection -var-assign <name> <expression>
|
|
|
|
Assigns a new value for the variable object specified. The object must
|
|
be "editable".
|
|
|
|
@subsection -var-update @{<name> | '*'@}
|
|
|
|
Update the value of the variable object by evaluating its expression
|
|
after fetching all the new values from memory or registers. A '*'
|
|
causes all existing variable objects to be updated.
|
|
|
|
|
|
@c%%%%%%%%%%%%%%%%%%%%%%%%%%%% APPENDIX %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
@appendix Proposed v2.0 Output Syntax
|
|
|
|
This appendix is not part of the MI specification. It is provided as a
|
|
discussion point.
|
|
|
|
The output from GDB/MI consists of zero or more out-of-band records
|
|
optionally followed by a single result record. The result record being
|
|
for the most recent command input. The sequence being terminated by
|
|
``(gdb)''.
|
|
|
|
Asynchronous GDB/MI output is similar.
|
|
|
|
Each output record directly associated with an input command is prefixed
|
|
by the input commands @code{<token>}.
|
|
|
|
@table @code
|
|
@item <output> @expansion{}
|
|
@{ <out-of-band-record> @} [ <result-record> ] ``(gdb)'' <nl>
|
|
|
|
@item <result-record> @expansion{}
|
|
[ <token> ] ``^'' <result-class> @{ ``,'' <result> @} <nl>
|
|
|
|
@item <out-of-band-record> @expansion{}
|
|
<async-record> | <stream-record>
|
|
|
|
@item <async-record> @expansion{}
|
|
<exec-async-output> | <status-async-output> | <notify-async-output>
|
|
|
|
@item <exec-async-output> @expansion{}
|
|
[ <token> ] ``*'' <async-output>
|
|
|
|
@item <status-async-output> @expansion{}
|
|
[ <token> ] ``+'' <async-output>
|
|
|
|
@item <notify-async-output> @expansion{}
|
|
[ <token> ] ``='' <async-output>
|
|
|
|
@item <async-output> @expansion{}
|
|
<async-class> @{ ``,'' <result> @} <nl>
|
|
|
|
@item <result-class> @expansion{}
|
|
``done'' | ``running'' | ``connected'' | ``error'' | ``exit''
|
|
|
|
@item <async-class> @expansion{}
|
|
``stopped'' | @emph{others depending on need as still in development}
|
|
|
|
@item <result> @expansion{}
|
|
<string> ``='' <value>
|
|
|
|
@item <value> @expansion{}
|
|
<c-string> | <tupple> | <list>
|
|
|
|
@item <tupple> @expansion{}
|
|
``@{@}'' | ``@{'' <result> @{ ``,'' <result> @} ``@}''
|
|
|
|
@item <list> @expansion{}
|
|
``[]'' | ``['' <value> @{ ``,'' <value> @} ``]''
|
|
|
|
@item <string> @expansion{}
|
|
@emph{[-A-Za-z\.0-9_]*}
|
|
|
|
@item <c-string> @expansion{}
|
|
@emph{See the input specification}
|
|
|
|
@item <stream-record> @expansion{}
|
|
<console-stream-output> | <target-stream-output> | <log-stream-output>
|
|
|
|
@item <console-stream-output> @expansion{}
|
|
``~'' <c-string>
|
|
|
|
@item <target-stream-output> @expansion{}
|
|
``@@'' <c-string>
|
|
|
|
@item <log-stream-output> @expansion{}
|
|
``&'' <c-string>
|
|
|
|
@item <nl> @expansion{}
|
|
CR | CR-LF
|
|
|
|
@item <token> @expansion{}
|
|
``any sequence of digits''
|
|
|
|
@end table
|
|
|
|
In addition, the following are still being developed.
|
|
|
|
@table @code
|
|
|
|
@item <query>
|
|
This action is currently undefined.
|
|
|
|
@end table
|
|
|
|
Notes:
|
|
|
|
@itemize @bullet
|
|
|
|
@item
|
|
All output sequences end in a single line containing a period.
|
|
|
|
@item
|
|
The @code{<token>} is from the corresponding request. If an execution
|
|
command is interrupted by the -exec-interrupt command, the token
|
|
associated with the `*stopped' message is the one of the original
|
|
execution command, not the one of the interrupt-command.
|
|
|
|
@item
|
|
<status-async-output> contains on-going status information about the progress
|
|
of a slow operation. It can be discarded. All status output is prefixed by
|
|
the prefix `+'.
|
|
|
|
@item
|
|
<exec-async-output> contains asynchronous state change on the target
|
|
(stopped, started, disappeared). All async output is prefixed by
|
|
the prefix `*'.
|
|
|
|
@item
|
|
<notify-async-output> contains supplementary information that the client should
|
|
handle (new breakpoint information). All notify output is prefixed by
|
|
the prefix `='.
|
|
|
|
@item
|
|
<console-stream-output> is output that should be displayed as is in the
|
|
console. It is the textual response to a CLI command. All the console
|
|
output is prefixed by the prefix ``~''.
|
|
|
|
@item
|
|
<target-stream-output> is the output produced by the target program.
|
|
All the target output is prefixed by the prefix ``@@''.
|
|
|
|
@item
|
|
<log-stream-output> is output text coming from GDB's internals, for
|
|
instance messages that should be displayed as part of an error log. All
|
|
the log output is prefixed by the prefix ``&''.
|
|
|
|
@end itemize
|
|
|
|
|
|
@c Local variables:
|
|
@c change-log-default-name: "ChangeLog-mi"
|
|
@c End:
|
|
@bye
|