[PATCH 10/16 v3] Extended-remote fork event documentation

[Don Breazeal <donb at codesourcery dot com>]

This patch adds documentation for fork events on extended-remote linux
targets in the gdb manual and the NEWS file.

[This patch was approved by Eli:
https://sourceware.org/ml/gdb-patches/2014-08/msg00157.html]

Thanks
--Don

gdb/
2014-08-20  Don Breazeal  <donb@codesourcery.com>

	* gdb/NEWS: Describe new gdbserver support for fork events and new
	fork event support in RSP.

gdb/doc
2014-08-20  Don Breazeal  <donb@codesourcery.com>
	* gdb/doc/gdb.texinfo (Forks): Describe fork debugging support in
	gdbserver.
	(Set Catchpoints): Describe fork catchpoint support in gdbserver.
	(Stop Reply Packets): Describe fork event support in RSP.

---
 gdb/NEWS            |   15 +++++++++++++++
 gdb/doc/gdb.texinfo |   33 +++++++++++++++++++++++++++++----
 2 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/gdb/NEWS b/gdb/NEWS
index 01cdc36..1c07663 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -59,6 +59,21 @@ SGI Irix-6.x				mips-*-irix6*
 VAX running (4.2 - 4.3 Reno) BSD 	vax-*-bsd*
 VAX running Ultrix 			vax-*-ultrix*
 
+* Remote fork events
+
+  GDBserver extended-remote Linux targets now support fork events.
+  This enables follow-fork-mode, detach-on-fork, catch fork, and
+  catch vfork for those targets with Linux kernels 2.5.60 and later.
+
+* New remote packets
+
+T Stop Reply Packet's reason
+  The T stop reply packet supports new stop reasons 'fork', 'vfork'
+  and 'vforkdone'. The 'fork' and 'vfork' reasons signify that the
+  specified inferior has executed a fork or vfork.  The 'vforkdone'
+  reason signifies that a vforked child process has executed either
+  an exec or an exit.
+
 *** Changes in GDB 7.8
 
 * New command line options
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 15c2908..9787623 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -3107,6 +3107,9 @@ create additional processes using the @code{fork} or @code{vfork} functions.
 Currently, the only platforms with this feature are HP-UX (11.x and later
 only?) and @sc{gnu}/Linux (kernel version 2.5.60 and later).
 
+The fork debugging commands are supported in both native mode and when
+connected to @code{gdbserver} using @kbd{target extended-remote}.
+
 By default, when a program forks, @value{GDBN} will continue to debug
 the parent process and the child process will run unimpeded.
 
@@ -4387,13 +4390,15 @@ Again, in this case @value{GDBN} would not be able to display syscall's names.
 
 @item fork
 @kindex catch fork
-A call to @code{fork}.  This is currently only available for HP-UX
-and @sc{gnu}/Linux.
+A call to @code{fork}.  This is currently only available for native
+HP-UX and @sc{gnu}/Linux, and when connected to @code{gdbserver} running
+on @sc{gnu}/Linux with @kbd{target extended-remote}.
 
 @item vfork
 @kindex catch vfork
-A call to @code{vfork}.  This is currently only available for HP-UX
-and @sc{gnu}/Linux.
+A call to @code{vfork}.  This is currently only available for native
+HP-UX and @sc{gnu}/Linux, and when connected to @code{gdbserver} running
+on @sc{gnu}/Linux with @kbd{target extended-remote}.
 
 @item load @r{[}regexp@r{]}
 @itemx unload @r{[}regexp@r{]}
@@ -34700,6 +34705,26 @@ The packet indicates that the loaded libraries have changed.
 @value{GDBN} should use @samp{qXfer:libraries:read} to fetch a new
 list of loaded libraries.  The @var{r} part is ignored.
 
+@cindex fork events, remote reply
+@item fork
+The packet indicates that @code{fork} was called, and @var{r}
+is the ptid of the new child process.  This packet is only
+applicable to targets that support fork events.
+
+@cindex vfork events, remote reply
+@item vfork
+The packet indicates that @code{vfork} was called, and @var{r}
+is the ptid of the new child process.  This packet is only
+applicable to targets that support vfork events.
+
+@cindex vforkdone events, remote reply
+@item vforkdone
+The packet indicates that a child process created by a vfork
+has either called @code{exec} or terminated, so that the
+address spaces of the parent and child process are no longer
+shared. The @var{r} part is ignored.  This packet is only
+applicable to targets that support vforkdone events.
+
 @cindex replay log events, remote reply
 @item replaylog
 The packet indicates that the target cannot continue replaying 
-- 
1.7.0.4