---
 doc/gdb.texinfo |   23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

--- a/doc/gdb.texinfo
+++ b/doc/gdb.texinfo
@@ -33661,6 +33661,7 @@ Show the current setting of the target w
 * Host I/O Packets::
 * Interrupts::
 * Notification Packets::
+* ReportAsync Packets::
 * Remote Non-Stop::
 * Packet Acknowledgment::
 * Examples::
@@ -35567,6 +35568,10 @@ to be enabled and disabled while a trace
 The remote stub supports the @samp{tracenz} bytecode for collecting strings.
 See @ref{Bytecode Descriptions} for details about the bytecode.
 
+@item ReportAsync
+The remote stub supports the @samp{ReportAsync} packet
+(@pxref{ReportAsync Packets}).
+
 @end table
 
 @item qSymbol::
@@ -36664,6 +36669,24 @@ for information on how these notificatio
 @value{GDBN}.
 @end table
 
+@node ReportAsync Packets
+@section ReportAsync Packets
+@cindex reportasync packets
+@cindex packets, reportasync
+
+The @value{GDBN} remote serial protocol supports @dfn{reportasync}
+that can be used asynchronously to report status or send commands.
+
+When the stub want send @dfn{reportasync} packets, it send shake hands
+packet @samp{^} to @value{GDBN}.
+If @value{GDBN} replies with a @samp{^}, the handshake is successful.
+If not, the handshake fails, and the @samp{reportasync} packet needs
+to be handled as usual.
+
+After the handshake, the stub can send @samp{reportasync} packets to
+@value{GDBN}, using the same packet format as in normal remote serial
+protocol.
+
 @node Remote Non-Stop
 @section Remote Protocol Support for Non-Stop Mode