[binutils-gdb] AArch64: 128bit views for SVE registers

[binutils-gdb] AArch64: 128bit views for SVE registers

[Alan Hayward]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=fc96163a3ea7761f5353591c825027090942e330

commit fc96163a3ea7761f5353591c825027090942e330
Author: Alan Hayward <alan.hayward@arm.com>
Date:   Thu Mar 28 12:14:09 2019 +0000

    AArch64: 128bit views for SVE registers
    
    SVE can view Z registers as 128bit values using .q prefix.
    
    Add this view to the SVE feature.
    
    gdb/ChangeLog:
    
    	* features/aarch64-sve.c (create_feature_aarch64_sve): Add q view.

Diff:
---
 gdb/ChangeLog              |  4 ++++
 gdb/features/aarch64-sve.c | 14 ++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0c658e2..0a1a335 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2019-03-28  Alan Hayward  <alan.hayward@arm.com>
+
+	* features/aarch64-sve.c (create_feature_aarch64_sve): Add q view.
+
 2019-03-24  Philippe Waroquiers  <philippe.waroquiers@skynet.be>
 	    Tom Tromey  <tromey@adacore.com>
 
diff --git a/gdb/features/aarch64-sve.c b/gdb/features/aarch64-sve.c
index aa2ac7a..2166b4b 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);
@@ -90,6 +102,8 @@ create_feature_aarch64_sve (struct target_desc *result, long regnum,
   tdesc_add_field (type_with_fields, "s", field_type);
 
   type_with_fields = tdesc_create_union (feature, "svev");
+  field_type = tdesc_named_type (feature, "svevnq");
+  tdesc_add_field (type_with_fields, "q", field_type);
   field_type = tdesc_named_type (feature, "svevnd");
   tdesc_add_field (type_with_fields, "d", field_type);
   field_type = tdesc_named_type (feature, "svevns");