[PATCH 7/7] range stepping: doc and NEWS

[Yao Qi <yao@codesourcery.com>]

gdb/doc:

2013-03-11  Yao Qi  <yao@codesourcery.com>

	* gdb.texinfo (Packets): Document about 'vCont;r'.

gdb:

2013-03-11  Yao Qi  <yao@codesourcery.com>

	* NEWS: Mention range stepping, new packet and new
	commands.
---
 gdb/NEWS            |   12 ++++++++++++
 gdb/doc/gdb.texinfo |    5 +++++
 2 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/gdb/NEWS b/gdb/NEWS
index 99b8add..836638c 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -89,6 +89,10 @@ catch signal
 maint info bfds
   List the BFDs known to GDB.
 
+maint set range-stepping
+maint show range-stepping
+  Control and show whether do range stepping.
+
 python-interactive [command]
 pi [command]
   Start a Python interactive prompt, or evaluate the optional command
@@ -164,11 +168,19 @@ show filename-display
   feature to be enabled.  For more information, see:
       http://fedoraproject.org/wiki/Features/MiniDebugInfo
 
+* GDB now supports range stepping, which improves the performance of
+  single stepping over a source line by reducing the number of control
+  packets from GDB.
+
 * New remote packets
 
 QTBuffer:size
    Set the size of trace buffer.  The remote stub reports support for this
    packet to gdb's qSupported query.
+vCont;r
+  Tell the remote stub to do range stepping in an address range.  The remote
+  stub reports a stop reply when the program goes out of the range or is
+  stopped due to other reasons, such as hitting a breakpoint.
 
 *** Changes in GDB 7.5
 
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 7c06120..b505cda 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -36261,6 +36261,11 @@ Step.
 Step with signal @var{sig}.  The signal @var{sig} should be two hex digits.
 @item t
 Stop.
+@item r @var{start},@var{end}
+Step repeatedly while the PC is within the range [@var{start},
+@var{end}).  Note that a stop reply may be sent at any point even if
+the PC is within the stepping range; for example, it is permissible to
+implement this packet in a degenerate way as a single step operation.
 @end table
 
 The optional argument @var{addr} normally associated with the 
-- 
1.7.7.6