[PATCH] AArch64: 128bit views for SVE registers

[Alan Hayward]

SVE can view Z registers as 128bit values using .q prefix.

Add this view to the end of Z registers in the SVE feature (the same as
V registers), keeping the .d view as the first entry.

gdb/ChangeLog:

2019-03-20  Alan Hayward  <alan.hayward@arm.com>

	* features/aarch64-sve.c (create_feature_aarch64_sve): Add q view.
---
 gdb/features/aarch64-sve.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/gdb/features/aarch64-sve.c b/gdb/features/aarch64-sve.c
index aa2ac7a3c5..63d8ee666c 100644
--- a/gdb/features/aarch64-sve.c
+++ b/gdb/features/aarch64-sve.c
@@ -31,6 +31,12 @@ create_feature_aarch64_sve (struct target_desc *result, long regnum,
 
   feature = tdesc_create_feature (result, "org.gnu.gdb.aarch64.sve");
 
+  element_type = tdesc_named_type (feature, "uint128");
+  tdesc_create_vector (feature, "svevqu", element_type, scale);
+
+  element_type = tdesc_named_type (feature, "int128");
+  tdesc_create_vector (feature, "svevqs", element_type, scale);
+
   element_type = tdesc_named_type (feature, "ieee_double");
   tdesc_create_vector (feature, "svevdf", element_type, 2 * scale);
 
@@ -61,6 +67,12 @@ create_feature_aarch64_sve (struct target_desc *result, long regnum,
   element_type = tdesc_named_type (feature, "int8");
   tdesc_create_vector (feature, "svevbs", element_type, 16 * scale);
 
+  type_with_fields = tdesc_create_union (feature, "svevnq");
+  field_type = tdesc_named_type (feature, "svevqu");
+  tdesc_add_field (type_with_fields, "u", field_type);
+  field_type = tdesc_named_type (feature, "svevqs");
+  tdesc_add_field (type_with_fields, "s", field_type);
+
   type_with_fields = tdesc_create_union (feature, "svevnd");
   field_type = tdesc_named_type (feature, "svevdf");
   tdesc_add_field (type_with_fields, "f", field_type);
@@ -98,6 +110,8 @@ create_feature_aarch64_sve (struct target_desc *result, long regnum,
   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, "svevnq");
+  tdesc_add_field (type_with_fields, "q", field_type);
 
   field_type = tdesc_named_type (feature, "uint8");
   tdesc_create_vector (feature, "svep", field_type, 2 * scale);
-- 
2.17.2 (Apple Git-113)