commit 96235dc1ac3730c4e490d19db2e8287c0a40f307
Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
Date:   Mon Sep 25 16:02:23 2017 +0200

    S390: Add guarded-storage register definitions and tdescs
    
    Newer Linux kernel versions offer two new register sets in support of the
    z/Architecture's guarded storage facility.  This patch adds XML
    descriptions and the respective autogenerated .c and .dat files for
    s390/s390x targets with this feature.
    
    gdb/ChangeLog:
    
            * features/s390-gs-linux64.xml: New file.
            * features/s390-gs.xml: New file.
            * features/s390-gsbc.xml: New file.
            * features/s390x-gs-linux64.xml: New file.
            * features/Makefile (WHICH): Add s390-gs-linux64 and
            s390x-gs-linux64.
            (s390-gs-linux64-expedite, s390x-gs-linux64-expedite): New macros.
            (XMLTOC): Add s390-gs-linux64.xml and s390x-linux64.xml.
            * features/s390-gs-linux64.c: New generated file.
            * features/s390x-gs-linux64.c: New file.
            * regformats/s390-gs-linux64.dat: New file.
            * regformats/s390x-gs-linux64.dat: New file.

### a/gdb/ChangeLog
### b/gdb/ChangeLog
## -1,3 +1,18 @@
+2017-09-25  Andreas Arnez  <arnez@linux.vnet.ibm.com>
+
+	* features/s390-gs-linux64.xml: New file.
+	* features/s390-gs.xml: New file.
+	* features/s390-gsbc.xml: New file.
+	* features/s390x-gs-linux64.xml: New file.
+	* features/Makefile (WHICH): Add s390-gs-linux64 and
+	s390x-gs-linux64.
+	(s390-gs-linux64-expedite, s390x-gs-linux64-expedite): New macros.
+	(XMLTOC): Add s390-gs-linux64.xml and s390x-linux64.xml.
+	* features/s390-gs-linux64.c: New generated file.
+	* features/s390x-gs-linux64.c: New file.
+	* regformats/s390-gs-linux64.dat: New file.
+	* regformats/s390x-gs-linux64.dat: New file.
+
 2017-09-23  Tom Tromey  <tom@tromey.com>
 
 	* defs.h (make_cleanup_override_quit_handler): Don't declare.
--- a/gdb/features/Makefile
+++ b/gdb/features/Makefile
@@ -78,6 +78,7 @@ WHICH = aarch64 \
 	s390-linux32v2 s390-linux64v2 s390x-linux64v2 \
 	s390-te-linux64 s390x-te-linux64 s390-vx-linux64 s390x-vx-linux64 \
 	s390-tevx-linux64 s390x-tevx-linux64 \
+	s390-gs-linux64 s390x-gs-linux64 \
 	tic6x-c64xp tic6x-c64x tic6x-c62x \
 	tic6x-c64xp-linux tic6x-c64x-linux tic6x-c62x-linux
 
@@ -105,12 +106,14 @@ s390-linux64v2-expedite = r14l,r15l,pswa
 s390-te-linux64-expedite = r14l,r15l,pswa
 s390-vx-linux64-expedite = r14l,r15l,pswa
 s390-tevx-linux64-expedite = r14l,r15l,pswa
+s390-gs-linux64-expedite = r14,r15,pswa
 s390x-linux64-expedite = r14,r15,pswa
 s390x-linux64v1-expedite = r14,r15,pswa
 s390x-linux64v2-expedite = r14,r15,pswa
 s390x-te-linux64-expedite = r14,r15,pswa
 s390x-vx-linux64-expedite = r14,r15,pswa
 s390x-tevx-linux64-expedite = r14,r15,pswa
+s390x-gs-linux64-expedite = r14,r15,pswa
 tic6x-c64xp-expedite = A15,PC
 tic6x-c64x-expedite = A15,PC
 tic6x-c62x-expedite = A15,PC
@@ -196,6 +199,8 @@ XMLTOC = \
 	s390-vx-linux64.xml \
 	s390x-tevx-linux64.xml \
 	s390x-vx-linux64.xml \
+	s390-gs-linux64.xml \
+	s390x-gs-linux64.xml \
 	tic6x-c62x-linux.xml \
 	tic6x-c62x.xml \
 	tic6x-c64x-linux.xml \
--- /dev/null
+++ b/gdb/features/s390-gs-linux64.c
@@ -0,0 +1,198 @@
+/* THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi:set ro:
+  Original: s390-gs-linux64.xml */
+
+#include "defs.h"
+#include "osabi.h"
+#include "target-descriptions.h"
+
+struct target_desc *tdesc_s390_gs_linux64;
+static void
+initialize_tdesc_s390_gs_linux64 (void)
+{
+  struct target_desc *result = allocate_target_description ();
+  struct tdesc_feature *feature;
+  struct tdesc_type *field_type;
+  struct tdesc_type *type;
+
+  set_tdesc_architecture (result, bfd_scan_arch ("s390:31-bit"));
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.core");
+  tdesc_create_reg (feature, "pswm", 0, 1, "psw", 32, "uint32");
+  tdesc_create_reg (feature, "pswa", 1, 1, "psw", 32, "uint32");
+  tdesc_create_reg (feature, "r0h", 2, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r0l", 3, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r1h", 4, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r1l", 5, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r2h", 6, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r2l", 7, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r3h", 8, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r3l", 9, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r4h", 10, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r4l", 11, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r5h", 12, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r5l", 13, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r6h", 14, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r6l", 15, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r7h", 16, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r7l", 17, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r8h", 18, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r8l", 19, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r9h", 20, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r9l", 21, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r10h", 22, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r10l", 23, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r11h", 24, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r11l", 25, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r12h", 26, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r12l", 27, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r13h", 28, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r13l", 29, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r14h", 30, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r14l", 31, 1, "lower", 32, "uint32");
+  tdesc_create_reg (feature, "r15h", 32, 1, "upper", 32, "uint32");
+  tdesc_create_reg (feature, "r15l", 33, 1, "lower", 32, "uint32");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.acr");
+  tdesc_create_reg (feature, "acr0", 34, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr1", 35, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr2", 36, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr3", 37, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr4", 38, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr5", 39, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr6", 40, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr7", 41, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr8", 42, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr9", 43, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr10", 44, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr11", 45, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr12", 46, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr13", 47, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr14", 48, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr15", 49, 1, "access", 32, "uint32");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.fpr");
+  tdesc_create_reg (feature, "fpc", 50, 1, "float", 32, "uint32");
+  tdesc_create_reg (feature, "f0", 51, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f1", 52, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f2", 53, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f3", 54, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f4", 55, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f5", 56, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f6", 57, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f7", 58, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f8", 59, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f9", 60, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f10", 61, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f11", 62, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f12", 63, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f13", 64, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f14", 65, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f15", 66, 1, "float", 64, "ieee_double");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.linux");
+  tdesc_create_reg (feature, "orig_r2", 67, 1, "system", 32, "uint32");
+  tdesc_create_reg (feature, "last_break", 68, 0, "system", 32, "code_ptr");
+  tdesc_create_reg (feature, "system_call", 69, 1, "system", 32, "uint32");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.tdb");
+  tdesc_create_reg (feature, "tdb0", 70, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tac", 71, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tct", 72, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "atia", 73, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr0", 74, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr1", 75, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr2", 76, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr3", 77, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr4", 78, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr5", 79, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr6", 80, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr7", 81, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr8", 82, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr9", 83, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr10", 84, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr11", 85, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr12", 86, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr13", 87, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr14", 88, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr15", 89, 1, "tdb", 64, "uint64");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.vx");
+  field_type = tdesc_named_type (feature, "ieee_single");
+  tdesc_create_vector (feature, "v4f", field_type, 4);
+
+  field_type = tdesc_named_type (feature, "ieee_double");
+  tdesc_create_vector (feature, "v2d", field_type, 2);
+
+  field_type = tdesc_named_type (feature, "int8");
+  tdesc_create_vector (feature, "v16i8", field_type, 16);
+
+  field_type = tdesc_named_type (feature, "int16");
+  tdesc_create_vector (feature, "v8i16", field_type, 8);
+
+  field_type = tdesc_named_type (feature, "int32");
+  tdesc_create_vector (feature, "v4i32", field_type, 4);
+
+  field_type = tdesc_named_type (feature, "int64");
+  tdesc_create_vector (feature, "v2i64", field_type, 2);
+
+  type = tdesc_create_union (feature, "vec128");
+  field_type = tdesc_named_type (feature, "v4f");
+  tdesc_add_field (type, "v4_float", field_type);
+  field_type = tdesc_named_type (feature, "v2d");
+  tdesc_add_field (type, "v2_double", field_type);
+  field_type = tdesc_named_type (feature, "v16i8");
+  tdesc_add_field (type, "v16_int8", field_type);
+  field_type = tdesc_named_type (feature, "v8i16");
+  tdesc_add_field (type, "v8_int16", field_type);
+  field_type = tdesc_named_type (feature, "v4i32");
+  tdesc_add_field (type, "v4_int32", field_type);
+  field_type = tdesc_named_type (feature, "v2i64");
+  tdesc_add_field (type, "v2_int64", field_type);
+  field_type = tdesc_named_type (feature, "uint128");
+  tdesc_add_field (type, "uint128", field_type);
+
+  tdesc_create_reg (feature, "v0l", 90, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v1l", 91, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v2l", 92, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v3l", 93, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v4l", 94, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v5l", 95, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v6l", 96, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v7l", 97, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v8l", 98, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v9l", 99, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v10l", 100, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v11l", 101, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v12l", 102, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v13l", 103, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v14l", 104, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v15l", 105, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v16", 106, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v17", 107, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v18", 108, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v19", 109, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v20", 110, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v21", 111, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v22", 112, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v23", 113, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v24", 114, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v25", 115, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v26", 116, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v27", 117, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v28", 118, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v29", 119, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v30", 120, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v31", 121, 1, NULL, 128, "vec128");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.gs");
+  tdesc_create_reg (feature, "gsd", 122, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "gssm", 123, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "gsepla", 124, 1, "gs", 64, "data_ptr");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.gsbc");
+  tdesc_create_reg (feature, "bc_gsd", 125, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "bc_gssm", 126, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "bc_gsepla", 127, 1, "gs", 64, "data_ptr");
+
+  tdesc_s390_gs_linux64 = result;
+}
--- /dev/null
+++ b/gdb/features/s390-gs-linux64.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2017 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!-- S/390 31-bit user-level code on a machine operating
+     in z/Architecture mode.  -->
+
+<!DOCTYPE target SYSTEM "gdb-target.dtd">
+<target>
+  <architecture>s390:31-bit</architecture>
+  <xi:include href="s390-core64.xml"/>
+  <xi:include href="s390-acr.xml"/>
+  <xi:include href="s390-fpr.xml"/>
+
+  <feature name="org.gnu.gdb.s390.linux">
+    <reg name="orig_r2" bitsize="32" type="uint32" group="system"/>
+    <reg name="last_break" bitsize="32" type="code_ptr" group="system" save-restore="no"/>
+    <reg name="system_call" bitsize="32" type="uint32" group="system"/>
+  </feature>
+
+  <xi:include href="s390-tdb.xml"/>
+  <xi:include href="s390-vx.xml"/>
+  <xi:include href="s390-gs.xml"/>
+  <xi:include href="s390-gsbc.xml"/>
+</target>
--- /dev/null
+++ b/gdb/features/s390-gs.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2017 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.s390.gs">
+  <reg name="gsd" bitsize="64" type="uint64" group="gs"/>
+  <reg name="gssm" bitsize="64" type="uint64" group="gs"/>
+  <reg name="gsepla" bitsize="64" type="data_ptr" group="gs"/>
+</feature>
--- /dev/null
+++ b/gdb/features/s390-gsbc.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2017 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.s390.gsbc">
+  <reg name="bc_gsd" bitsize="64" type="uint64" group="gs"/>
+  <reg name="bc_gssm" bitsize="64" type="uint64" group="gs"/>
+  <reg name="bc_gsepla" bitsize="64" type="data_ptr" group="gs"/>
+</feature>
--- /dev/null
+++ b/gdb/features/s390x-gs-linux64.c
@@ -0,0 +1,182 @@
+/* THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi:set ro:
+  Original: s390x-gs-linux64.xml */
+
+#include "defs.h"
+#include "osabi.h"
+#include "target-descriptions.h"
+
+struct target_desc *tdesc_s390x_gs_linux64;
+static void
+initialize_tdesc_s390x_gs_linux64 (void)
+{
+  struct target_desc *result = allocate_target_description ();
+  struct tdesc_feature *feature;
+  struct tdesc_type *field_type;
+  struct tdesc_type *type;
+
+  set_tdesc_architecture (result, bfd_scan_arch ("s390:64-bit"));
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.core");
+  tdesc_create_reg (feature, "pswm", 0, 1, "psw", 64, "uint64");
+  tdesc_create_reg (feature, "pswa", 1, 1, "psw", 64, "uint64");
+  tdesc_create_reg (feature, "r0", 2, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r1", 3, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r2", 4, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r3", 5, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r4", 6, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r5", 7, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r6", 8, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r7", 9, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r8", 10, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r9", 11, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r10", 12, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r11", 13, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r12", 14, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r13", 15, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r14", 16, 1, "general", 64, "uint64");
+  tdesc_create_reg (feature, "r15", 17, 1, "general", 64, "uint64");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.acr");
+  tdesc_create_reg (feature, "acr0", 18, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr1", 19, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr2", 20, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr3", 21, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr4", 22, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr5", 23, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr6", 24, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr7", 25, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr8", 26, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr9", 27, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr10", 28, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr11", 29, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr12", 30, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr13", 31, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr14", 32, 1, "access", 32, "uint32");
+  tdesc_create_reg (feature, "acr15", 33, 1, "access", 32, "uint32");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.fpr");
+  tdesc_create_reg (feature, "fpc", 34, 1, "float", 32, "uint32");
+  tdesc_create_reg (feature, "f0", 35, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f1", 36, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f2", 37, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f3", 38, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f4", 39, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f5", 40, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f6", 41, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f7", 42, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f8", 43, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f9", 44, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f10", 45, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f11", 46, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f12", 47, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f13", 48, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f14", 49, 1, "float", 64, "ieee_double");
+  tdesc_create_reg (feature, "f15", 50, 1, "float", 64, "ieee_double");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.linux");
+  tdesc_create_reg (feature, "orig_r2", 51, 1, "system", 64, "uint64");
+  tdesc_create_reg (feature, "last_break", 52, 0, "system", 64, "code_ptr");
+  tdesc_create_reg (feature, "system_call", 53, 1, "system", 32, "uint32");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.tdb");
+  tdesc_create_reg (feature, "tdb0", 54, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tac", 55, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tct", 56, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "atia", 57, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr0", 58, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr1", 59, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr2", 60, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr3", 61, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr4", 62, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr5", 63, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr6", 64, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr7", 65, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr8", 66, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr9", 67, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr10", 68, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr11", 69, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr12", 70, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr13", 71, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr14", 72, 1, "tdb", 64, "uint64");
+  tdesc_create_reg (feature, "tr15", 73, 1, "tdb", 64, "uint64");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.vx");
+  field_type = tdesc_named_type (feature, "ieee_single");
+  tdesc_create_vector (feature, "v4f", field_type, 4);
+
+  field_type = tdesc_named_type (feature, "ieee_double");
+  tdesc_create_vector (feature, "v2d", field_type, 2);
+
+  field_type = tdesc_named_type (feature, "int8");
+  tdesc_create_vector (feature, "v16i8", field_type, 16);
+
+  field_type = tdesc_named_type (feature, "int16");
+  tdesc_create_vector (feature, "v8i16", field_type, 8);
+
+  field_type = tdesc_named_type (feature, "int32");
+  tdesc_create_vector (feature, "v4i32", field_type, 4);
+
+  field_type = tdesc_named_type (feature, "int64");
+  tdesc_create_vector (feature, "v2i64", field_type, 2);
+
+  type = tdesc_create_union (feature, "vec128");
+  field_type = tdesc_named_type (feature, "v4f");
+  tdesc_add_field (type, "v4_float", field_type);
+  field_type = tdesc_named_type (feature, "v2d");
+  tdesc_add_field (type, "v2_double", field_type);
+  field_type = tdesc_named_type (feature, "v16i8");
+  tdesc_add_field (type, "v16_int8", field_type);
+  field_type = tdesc_named_type (feature, "v8i16");
+  tdesc_add_field (type, "v8_int16", field_type);
+  field_type = tdesc_named_type (feature, "v4i32");
+  tdesc_add_field (type, "v4_int32", field_type);
+  field_type = tdesc_named_type (feature, "v2i64");
+  tdesc_add_field (type, "v2_int64", field_type);
+  field_type = tdesc_named_type (feature, "uint128");
+  tdesc_add_field (type, "uint128", field_type);
+
+  tdesc_create_reg (feature, "v0l", 74, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v1l", 75, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v2l", 76, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v3l", 77, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v4l", 78, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v5l", 79, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v6l", 80, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v7l", 81, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v8l", 82, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v9l", 83, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v10l", 84, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v11l", 85, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v12l", 86, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v13l", 87, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v14l", 88, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v15l", 89, 1, NULL, 64, "uint64");
+  tdesc_create_reg (feature, "v16", 90, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v17", 91, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v18", 92, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v19", 93, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v20", 94, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v21", 95, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v22", 96, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v23", 97, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v24", 98, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v25", 99, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v26", 100, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v27", 101, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v28", 102, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v29", 103, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v30", 104, 1, NULL, 128, "vec128");
+  tdesc_create_reg (feature, "v31", 105, 1, NULL, 128, "vec128");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.gs");
+  tdesc_create_reg (feature, "gsd", 106, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "gssm", 107, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "gsepla", 108, 1, "gs", 64, "data_ptr");
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.s390.gsbc");
+  tdesc_create_reg (feature, "bc_gsd", 109, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "bc_gssm", 110, 1, "gs", 64, "uint64");
+  tdesc_create_reg (feature, "bc_gsepla", 111, 1, "gs", 64, "data_ptr");
+
+  tdesc_s390x_gs_linux64 = result;
+}
--- /dev/null
+++ b/gdb/features/s390x-gs-linux64.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2017 Free Software Foundation, Inc.
+
+     Copying and distribution of this file, with or without modification,
+     are permitted in any medium without royalty provided the copyright
+     notice and this notice are preserved.  -->
+
+<!-- S/390 64-bit user-level code.  -->
+
+<!DOCTYPE target SYSTEM "gdb-target.dtd">
+<target>
+  <architecture>s390:64-bit</architecture>
+  <xi:include href="s390x-core64.xml"/>
+  <xi:include href="s390-acr.xml"/>
+  <xi:include href="s390-fpr.xml"/>
+
+  <feature name="org.gnu.gdb.s390.linux">
+    <reg name="orig_r2" bitsize="64" type="uint64" group="system"/>
+    <reg name="last_break" bitsize="64" type="code_ptr" group="system" save-restore="no"/>
+    <reg name="system_call" bitsize="32" type="uint32" group="system"/>
+  </feature>
+
+  <xi:include href="s390-tdb.xml"/>
+  <xi:include href="s390-vx.xml"/>
+  <xi:include href="s390-gs.xml"/>
+  <xi:include href="s390-gsbc.xml"/>
+</target>
--- /dev/null
+++ b/gdb/regformats/s390-gs-linux64.dat
@@ -0,0 +1,133 @@
+# THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi :set ro:
+# Generated from: s390-gs-linux64.xml
+name:s390_gs_linux64
+xmltarget:s390-gs-linux64.xml
+expedite:r14,r15,pswa
+32:pswm
+32:pswa
+32:r0h
+32:r0l
+32:r1h
+32:r1l
+32:r2h
+32:r2l
+32:r3h
+32:r3l
+32:r4h
+32:r4l
+32:r5h
+32:r5l
+32:r6h
+32:r6l
+32:r7h
+32:r7l
+32:r8h
+32:r8l
+32:r9h
+32:r9l
+32:r10h
+32:r10l
+32:r11h
+32:r11l
+32:r12h
+32:r12l
+32:r13h
+32:r13l
+32:r14h
+32:r14l
+32:r15h
+32:r15l
+32:acr0
+32:acr1
+32:acr2
+32:acr3
+32:acr4
+32:acr5
+32:acr6
+32:acr7
+32:acr8
+32:acr9
+32:acr10
+32:acr11
+32:acr12
+32:acr13
+32:acr14
+32:acr15
+32:fpc
+64:f0
+64:f1
+64:f2
+64:f3
+64:f4
+64:f5
+64:f6
+64:f7
+64:f8
+64:f9
+64:f10
+64:f11
+64:f12
+64:f13
+64:f14
+64:f15
+32:orig_r2
+32:last_break
+32:system_call
+64:tdb0
+64:tac
+64:tct
+64:atia
+64:tr0
+64:tr1
+64:tr2
+64:tr3
+64:tr4
+64:tr5
+64:tr6
+64:tr7
+64:tr8
+64:tr9
+64:tr10
+64:tr11
+64:tr12
+64:tr13
+64:tr14
+64:tr15
+64:v0l
+64:v1l
+64:v2l
+64:v3l
+64:v4l
+64:v5l
+64:v6l
+64:v7l
+64:v8l
+64:v9l
+64:v10l
+64:v11l
+64:v12l
+64:v13l
+64:v14l
+64:v15l
+128:v16
+128:v17
+128:v18
+128:v19
+128:v20
+128:v21
+128:v22
+128:v23
+128:v24
+128:v25
+128:v26
+128:v27
+128:v28
+128:v29
+128:v30
+128:v31
+64:gsd
+64:gssm
+64:gsepla
+64:bc_gsd
+64:bc_gssm
+64:bc_gsepla
--- /dev/null
+++ b/gdb/regformats/s390x-gs-linux64.dat
@@ -0,0 +1,117 @@
+# THIS FILE IS GENERATED.  -*- buffer-read-only: t -*- vi :set ro:
+# Generated from: s390x-gs-linux64.xml
+name:s390x_gs_linux64
+xmltarget:s390x-gs-linux64.xml
+expedite:r14,r15,pswa
+64:pswm
+64:pswa
+64:r0
+64:r1
+64:r2
+64:r3
+64:r4
+64:r5
+64:r6
+64:r7
+64:r8
+64:r9
+64:r10
+64:r11
+64:r12
+64:r13
+64:r14
+64:r15
+32:acr0
+32:acr1
+32:acr2
+32:acr3
+32:acr4
+32:acr5
+32:acr6
+32:acr7
+32:acr8
+32:acr9
+32:acr10
+32:acr11
+32:acr12
+32:acr13
+32:acr14
+32:acr15
+32:fpc
+64:f0
+64:f1
+64:f2
+64:f3
+64:f4
+64:f5
+64:f6
+64:f7
+64:f8
+64:f9
+64:f10
+64:f11
+64:f12
+64:f13
+64:f14
+64:f15
+64:orig_r2
+64:last_break
+32:system_call
+64:tdb0
+64:tac
+64:tct
+64:atia
+64:tr0
+64:tr1
+64:tr2
+64:tr3
+64:tr4
+64:tr5
+64:tr6
+64:tr7
+64:tr8
+64:tr9
+64:tr10
+64:tr11
+64:tr12
+64:tr13
+64:tr14
+64:tr15
+64:v0l
+64:v1l
+64:v2l
+64:v3l
+64:v4l
+64:v5l
+64:v6l
+64:v7l
+64:v8l
+64:v9l
+64:v10l
+64:v11l
+64:v12l
+64:v13l
+64:v14l
+64:v15l
+128:v16
+128:v17
+128:v18
+128:v19
+128:v20
+128:v21
+128:v22
+128:v23
+128:v24
+128:v25
+128:v26
+128:v27
+128:v28
+128:v29
+128:v30
+128:v31
+64:gsd
+64:gssm
+64:gsepla
+64:bc_gsd
+64:bc_gssm
+64:bc_gsepla