Add Aarch64 SVE target description

No code uses the new descriptions yet.

gdb/
	* aarch64-linux-nat.c (aarch64_linux_read_description):
	Add parmeter zero.
	* aarch64-linux-tdep.c (aarch64_linux_core_read_description):
	Likewise.
	* aarch64-tdep.c (tdesc_aarch64_list): Add.
	(aarch64_read_description): Use VQ to index tdesc_aarch64_list.
	(aarch64_gdbarch_init): Add parmeter zero.
	* aarch64-tdep.h (aarch64_read_description): Add VQ parmeter.
	* arch/aarch64.c (aarch64_create_target_description): Check VQ.
	* arch/aarch64.h (aarch64_create_target_description): Add VQ.
	parmeter.
	* doc/gdb.texinfo: Describe SVE feature
	* features/aarch64-sve.c: New file.

gdbserver/
	* linux-aarch64-tdesc.c (aarch64_linux_read_description): Add
	null VQ.

1 files changed, 158 insertions, 0 deletions

diff --git a/gdb/features/aarch64-sve.c b/gdb/features/aarch64-sve.c
new file mode 100644
index 0000000..a020e4d
--- /dev/null
+++ b/gdb/features/aarch64-sve.c
@@ -0,0 +1,158 @@
+/* Copyright (C) 2018 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include "common/tdesc.h"
+
+/* This function is NOT auto generated from xml.  Create the aarch64 with SVE
+   feature into RESULT, where SCALE is the number of 128 bit chunks in a Z
+   register.  */
+
+static int
+create_feature_aarch64_sve (struct target_desc *result, long regnum,
+			    int scale)
+{
+  struct tdesc_feature *feature;
+  tdesc_type *element_type, *field_type;
+  tdesc_type_with_fields *type_with_fields;
+
+  feature = tdesc_create_feature (result, "org.gnu.gdb.aarch64.sve");
+
+  element_type = tdesc_named_type (feature, "ieee_double");
+  tdesc_create_vector (feature, "svevdf", element_type, 2 * scale);
+
+  element_type = tdesc_named_type (feature, "uint64");
+  tdesc_create_vector (feature, "svevdu", element_type, 2 * scale);
+
+  element_type = tdesc_named_type (feature, "int64");
+  tdesc_create_vector (feature, "svevds", element_type, 2 * scale);
+
+  element_type = tdesc_named_type (feature, "ieee_single");
+  tdesc_create_vector (feature, "svevsf", element_type, 4 * scale);
+
+  element_type = tdesc_named_type (feature, "uint32");
+  tdesc_create_vector (feature, "svevsu", element_type, 4 * scale);
+
+  element_type = tdesc_named_type (feature, "int32");
+  tdesc_create_vector (feature, "svevss", element_type, 4 * scale);
+
+  element_type = tdesc_named_type (feature, "uint16");
+  tdesc_create_vector (feature, "svevhu", element_type, 8 * scale);
+
+  element_type = tdesc_named_type (feature, "int16");
+  tdesc_create_vector (feature, "svevhs", element_type, 8 * scale);
+
+  element_type = tdesc_named_type (feature, "uint8");
+  tdesc_create_vector (feature, "svevbu", element_type, 16 * scale);
+
+  element_type = tdesc_named_type (feature, "int8");
+  tdesc_create_vector (feature, "svevbs", element_type, 16 * scale);
+
+  type_with_fields = tdesc_create_union (feature, "svevnd");
+  field_type = tdesc_named_type (feature, "svevdf");
+  tdesc_add_field (type_with_fields, "f", field_type);
+  field_type = tdesc_named_type (feature, "svevdu");
+  tdesc_add_field (type_with_fields, "u", field_type);
+  field_type = tdesc_named_type (feature, "svevds");
+  tdesc_add_field (type_with_fields, "s", field_type);
+
+  type_with_fields = tdesc_create_union (feature, "svevns");
+  field_type = tdesc_named_type (feature, "svevsf");
+  tdesc_add_field (type_with_fields, "f", field_type);
+  field_type = tdesc_named_type (feature, "svevsu");
+  tdesc_add_field (type_with_fields, "u", field_type);
+  field_type = tdesc_named_type (feature, "svevss");
+  tdesc_add_field (type_with_fields, "s", field_type);
+
+  type_with_fields = tdesc_create_union (feature, "svevnh");
+  field_type = tdesc_named_type (feature, "svevhu");
+  tdesc_add_field (type_with_fields, "u", field_type);
+  field_type = tdesc_named_type (feature, "svevhs");
+  tdesc_add_field (type_with_fields, "s", field_type);
+
+  type_with_fields = tdesc_create_union (feature, "svevnb");
+  field_type = tdesc_named_type (feature, "svevbu");
+  tdesc_add_field (type_with_fields, "u", field_type);
+  field_type = tdesc_named_type (feature, "svevbs");
+  tdesc_add_field (type_with_fields, "s", field_type);
+
+  type_with_fields = tdesc_create_union (feature, "svev");
+  field_type = tdesc_named_type (feature, "svevnd");
+  tdesc_add_field (type_with_fields, "d", field_type);
+  field_type = tdesc_named_type (feature, "svevns");
+  tdesc_add_field (type_with_fields, "s", field_type);
+  field_type = tdesc_named_type (feature, "svevnh");
+  tdesc_add_field (type_with_fields, "h", field_type);
+  field_type = tdesc_named_type (feature, "svevnb");
+  tdesc_add_field (type_with_fields, "b", field_type);
+
+  field_type = tdesc_named_type (feature, "uint8");
+  tdesc_create_vector (feature, "svep", field_type, 2 * scale);
+
+  tdesc_create_reg (feature, "z0", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z1", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z2", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z3", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z4", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z5", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z6", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z7", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z8", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z9", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z10", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z11", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z12", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z13", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z14", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z15", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z16", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z17", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z18", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z19", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z20", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z21", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z22", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z23", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z24", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z25", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z26", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z27", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z28", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z29", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z30", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "z31", regnum++, 1, NULL, 128 * scale, "svev");
+  tdesc_create_reg (feature, "fpsr", regnum++, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "fpcr", regnum++, 1, NULL, 32, "int");
+  tdesc_create_reg (feature, "p0", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p1", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p2", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p3", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p4", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p5", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p6", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p7", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p8", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p9", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p10", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p11", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p12", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p13", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p14", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "p15", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "ffr", regnum++, 1, NULL, 16 * scale, "svep");
+  tdesc_create_reg (feature, "vg", regnum++, 1, NULL, 64, "int");
+  return regnum;
+}