gdb/gdbserver/gdbserver.1

   1 .\" Copyright 1993 Free Software Foundation, Inc.
   2 .\" See section COPYING for conditions for redistribution
   3 .TH gdbserver 1 "2 November 1993" "Cygnus Support" "GNU Development Tools"
   4 .SH NAME
   5 gdbserver \- Remote Server for the GNU Debugger
   6 .SH SYNOPSIS
   7 .na
   8 .TP
   9 .B gdbserver
  10 .RB tty
  11 .RB prog
  12 .RB "[\|" args... "\|]"
  13 .PP
  14 .B gdbserver
  15 .RB tty
  16 .B --attach
  17 .RB PID
  18 .ad b
  19 .SH DESCRIPTION
  20 GDBSERVER is a program that allows you to run GDB on a different machine
  21 than the one which is running the program being debugged.
  22
  23 Usage (server (target) side):
  24
  25 First, you need to have a copy of the program you want to debug put onto
  26 the target system.  The program can be stripped to save space if needed, as
  27 GDBserver doesn't care about symbols.  All symbol handling is taken care of by
  28 the GDB running on the host system.
  29
  30 To use the server, you log on to the target system, and run the `gdbserver'
  31 program.  You must tell it (a) how to communicate with GDB, (b) the name of
  32 your program, and (c) its arguments.  The general syntax is:
  33
  34         target> gdbserver COMM PROGRAM [ARGS ...]
  35
  36 For example, using a serial port, you might say:
  37
  38         target> gdbserver /dev/com1 emacs foo.txt
  39
  40 This tells gdbserver to debug emacs with an argument of foo.txt, and to
  41 communicate with GDB via /dev/com1.  Gdbserver now waits patiently for the
  42 host GDB to communicate with it.
  43
  44 To use a TCP connection, you could say:
  45
  46         target> gdbserver host:2345 emacs foo.txt
  47
  48 This says pretty much the same thing as the last example, except that we are
  49 going to communicate with the host GDB via TCP.  The `host:2345' argument means
  50 that we are expecting to see a TCP connection from `host' to local TCP port
  51 2345.  (Currently, the `host' part is ignored.)  You can choose any number you
  52 want for the port number as long as it does not conflict with any existing TCP
  53 ports on the target system.  This same port number must be used in the host
  54 GDBs `target remote' command, which will be described shortly.  Note that if
  55 you chose a port number that conflicts with another service, gdbserver will
  56 print an error message and exit.
  57
  58 On some targets, gdbserver can also attach to running programs.
  59 This is accomplished via the --attach argument.  The syntax is:
  60
  61         target> gdbserver COMM --attach PID
  62
  63 PID is the process ID of a currently running process.  It isn't
  64 necessary to point gdbserver at a binary for the running process.
  65
  66 Usage (host side):
  67
  68 You need an unstripped copy of the target program on your host system, since
  69 GDB needs to examine it's symbol tables and such.  Start up GDB as you normally
  70 would, with the target program as the first argument.  (You may need to use the
  71 --baud option if the serial line is running at anything except 9600 baud.)
  72 Ie: `gdb TARGET-PROG', or `gdb --baud BAUD TARGET-PROG'.  After that, the only
  73 new command you need to know about is `target remote'.  It's argument is either
  74 a device name (usually a serial device, like `/dev/ttyb'), or a HOST:PORT
  75 descriptor.  For example:
  76
  77         (gdb) target remote /dev/ttyb
  78
  79 communicates with the server via serial line /dev/ttyb, and:
  80
  81         (gdb) target remote the-target:2345
  82
  83 communicates via a TCP connection to port 2345 on host `the-target', where
  84 you previously started up gdbserver with the same port number.  Note that for
  85 TCP connections, you must start up gdbserver prior to using the `target remote'
  86 command, otherwise you may get an error that looks something like
  87 `Connection refused'.
  88 .SH OPTIONS
  89 You have to supply the name of the program to debug
  90 and the tty to communicate on; the remote GDB will do everything else.
  91 Any remaining arguments will be passed to the program verbatim.
  92 .SH "SEE ALSO"
  93 .RB "`\|" gdb "\|'"
  94 entry in
  95 .B info\c
  96 \&;
  97 .I
  98 Using GDB: A Guide to the GNU Source-Level Debugger\c
  99 , Richard M. Stallman and Roland H. Pesch, July 1991.
 100 .SH COPYING
 101 Copyright (c) 1993 Free Software Foundation, Inc.
 102 .PP
 103 Permission is granted to make and distribute verbatim copies of
 104 this manual provided the copyright notice and this permission notice
 105 are preserved on all copies.
 106 .PP
 107 Permission is granted to copy and distribute modified versions of this
 108 manual under the conditions for verbatim copying, provided that the
 109 entire resulting derived work is distributed under the terms of a
 110 permission notice identical to this one.
 111 .PP
 112 Permission is granted to copy and distribute translations of this
 113 manual into another language, under the above conditions for modified
 114 versions, except that this permission notice may be included in
 115 translations approved by the Free Software Foundation instead of in
 116 the original English.