[PATCH 4/4] S390: Document guarded-storage register support

[Andreas Arnez <arnez at linux dot vnet dot ibm dot com>]

This documents the newly added support for guarded-storage registers on
IBM z.
---
 gdb/NEWS            | 3 +++
 gdb/doc/gdb.texinfo | 8 ++++++++
 2 files changed, 11 insertions(+)

diff --git a/gdb/NEWS b/gdb/NEWS
index 549f511..9246659 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -3,6 +3,9 @@
 
 *** Changes since GDB 8.0
 
+* GDB now supports access to the guarded-storage-control registers and the
+  software-based guarded-storage broadcast control registers on IBM z14.
+
 * On Unix systems, GDB now supports transmitting environment variables
   that are to be set or unset to GDBserver.  These variables will
   affect the environment to be passed to the remote inferior.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index d50a1fd..0bfaf61 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -41855,6 +41855,14 @@ through @samp{f15} to present the 128-bit wide vector registers
 contain the 128-bit wide vector registers @samp{v16} through
 @samp{v31}.
 
+The @samp{org.gnu.gdb.s390.gs} feature is optional.  It should contain
+the 64-bit wide guarded-storage-control registers @samp{gsd},
+@samp{gssm}, and @samp{gsepla}.
+
+The @samp{org.gnu.gdb.s390.gsbc} feature is optional.  It should contain
+the 64-bit wide guarded-storage broadcast control registers
+@samp{bc_gsd}, @samp{bc_gssm}, and @samp{bc_gsepla}.
+
 @node Sparc Features
 @subsection Sparc Features
 @cindex target descriptions, sparc32 features
-- 
2.5.0