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author | K. Richard Pixley <rich@cygnus> | 1992-12-08 04:59:31 +0000 |
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committer | K. Richard Pixley <rich@cygnus> | 1992-12-08 04:59:31 +0000 |
commit | 43bbd567f2d928b2628e508ee9c75a3920e26b4d (patch) | |
tree | 21f1ab246e1a3f963e73c3662bc1d44f591349a1 /gdb/doc/gdb.tgts-m4 | |
parent | a362ee23634a2f9ce9642eab09592e8ff6ae509b (diff) | |
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diff --git a/gdb/doc/gdb.tgts-m4 b/gdb/doc/gdb.tgts-m4 index f3bee50..e69de29 100755 --- a/gdb/doc/gdb.tgts-m4 +++ b/gdb/doc/gdb.tgts-m4 @@ -1,192 +0,0 @@ -_dnl__ -*- Texinfo -*- -_dnl__ Copyright (c) 1988 1989 1990 1991 Free Software Foundation, Inc. -_dnl__ This file is part of the source for the GDB manual. -@c M4 FRAGMENT: $Id$ -@node Targets, Controlling _GDBN__, _GDBN__ Files, Top -@chapter Specifying a Debugging Target -@cindex debugging target -@kindex target -A @dfn{target} is an interface between the debugger and a particular -kind of file or process. - -Often, you will be able to run _GDBN__ in the same host environment as the -program you are debugging; in that case, the debugging target can just be -specified as a side effect of the @code{file} or @code{core} commands. -When you need more flexibility---for example, running _GDBN__ on a -physically separate host, controlling standalone systems over a -serial port, or realtime systems over a TCP/IP connection---you can use -the @code{target} command. - -@menu -* Active Targets:: Active Targets -* Target Commands:: Commands for Managing Targets -* Remote:: Remote Debugging -@end menu - -@node Active Targets, Target Commands, Targets, Targets -@section Active Targets -@cindex stacking targets -@cindex active targets -@cindex multiple targets - -Targets are managed in three @dfn{strata} that correspond to different -classes of target: processes, core files, and executable files. This -allows you to (for example) start a process and inspect its activity -without abandoning your work on a core file. - -More than one target can potentially respond to a request. In -particular, when you access memory _GDBN__ will examine the three strata of -targets until it finds a target that can handle that particular address. -Strata are always examined in a fixed order: first a process if there is -one, then a core file if there is one, and finally an executable file if -there is one of those. - -When you specify a new target in a given stratum, it replaces any target -previously in that stratum. - -To get rid of a target without replacing it, use the @code{detach} -command. The related command @code{attach} provides you with a way of -choosing a particular running process as a new target. @xref{Attach}. - -@node Target Commands, Remote, Active Targets, Targets -@section Commands for Managing Targets - -@table @code -@item target @var{type} @var{parameters} -Connects the _GDBN__ host environment to a target machine or process. A -target is typically a protocol for talking to debugging facilities. You -use the argument @var{type} to specify the type or protocol of the -target machine. - -Further @var{parameters} are interpreted by the target protocol, but -typically include things like device names or host names to connect -with, process numbers, and baud rates. - -The @code{target} command will not repeat if you press @key{RET} again -after executing the command. - -@item help target -@kindex help target -Displays the names of all targets available. To display targets -currently selected, use either @code{info target} or @code{info files} -(@pxref{Files}). - -@item help target @var{name} -Describe a particular target, including any parameters necessary to -select it. -@end table - -Here are some common targets (available, or not, depending on the _GDBN__ -configuration): - -@table @code -@item target exec @var{prog} -@kindex target exec -An executable file. @samp{target exec @var{prog}} is the same as -@samp{exec-file @var{prog}}. - -@item target core @var{filename} -@kindex target core -A core dump file. @samp{target core @var{filename}} is the same as -@samp{core-file @var{filename}}. - -@item target remote @var{dev} -@kindex target remote -Remote serial target in _GDBN__-specific protocol. The argument @var{dev} -specifies what serial device to use for the connection (e.g. -@file{/dev/ttya}). @xref{Remote}. - -_if__(_AMD29K__) -@item target amd-eb @var{dev} @var{speed} @var{PROG} -@kindex target amd-eb -@cindex AMD EB29K -Remote PC-resident AMD EB29K board, attached over serial lines. -@var{dev} is the serial device, as for @code{target remote}; -@var{speed} allows you to specify the linespeed; and @var{PROG} is the -name of the program to be debugged, as it appears to DOS on the PC. -@xref{EB29K Remote}. - -_fi__(_AMD29K__) -_if__(_I960__) -@item target nindy @var{devicename} -@kindex target nindy -An Intel 960 board controlled by a Nindy Monitor. @var{devicename} is -the name of the serial device to use for the connection, e.g. -@file{/dev/ttya}. @xref{i960-Nindy Remote}. - -_fi__(_I960__) -_if__(_VXWORKS__) -@item target vxworks @var{machinename} -@kindex target vxworks -A VxWorks system, attached via TCP/IP. The argument @var{machinename} -is the target system's machine name or IP address. -@xref{VxWorks Remote}. -_fi__(_VXWORKS__) -@end table - -_if__(_GENERIC__) -Different targets are available on different configurations of _GDBN__; your -configuration may have more or fewer targets. -_fi__(_GENERIC__) - -@node Remote, , Target Commands, Targets -@section Remote Debugging -@cindex remote debugging - -_if__(_GENERIC__) -@menu -_include__(gdb.inv.m-m4)<>_dnl__ -@end menu -_fi__(_GENERIC__) - -If you are trying to debug a program running on a machine that can't run -_GDBN__ in the usual way, it is often useful to use remote debugging. For -example, you might use remote debugging on an operating system kernel, or on -a small system which does not have a general purpose operating system -powerful enough to run a full-featured debugger. - -Some configurations of _GDBN__ have special serial or TCP/IP interfaces -to make this work with particular debugging targets. In addition, -_GDBN__ comes with a generic serial protocol (specific to _GDBN__, but -not specific to any particular target system) which you can use if you -write the remote stubs---the code that will run on the remote system to -communicate with _GDBN__. - -To use the _GDBN__ remote serial protocol, the program to be debugged on -the remote machine needs to contain a debugging stub which talks to -_GDBN__ over the serial line. Several working remote stubs are -distributed with _GDBN__; see the @file{README} file in the _GDBN__ -distribution for more information. - -For details of this communication protocol, see the comments in the -_GDBN__ source file @file{remote.c}. - -To start remote debugging, first run _GDBN__ and specify as an executable file -the program that is running in the remote machine. This tells _GDBN__ how -to find the program's symbols and the contents of its pure text. Then -establish communication using the @code{target remote} command with a device -name as an argument. For example: - -@example -target remote /dev/ttyb -@end example - -@noindent -if the serial line is connected to the device named @file{/dev/ttyb}. This -will stop the remote machine if it is not already stopped. - -Now you can use all the usual commands to examine and change data and to -step and continue the remote program. - -To resume the remote program and stop debugging it, use the @code{detach} -command. - -Other remote targets may be available in your -configuration of _GDBN__; use @code{help targets} to list them. - -_if__(_GENERIC__) -_include__(gdb.inv.s-m4) -@c Text on starting up GDB in various specific cases; it goes up front -@c in manuals configured for any of those particular situations, here -@c otherwise. -_fi__(_GENERIC__) |