[V2 03/23] vla: introduce allocated/associated flags

[Keven Boell <keven dot boell at intel dot com>]

Fortran 90 provide types whose values may be dynamically
allocated or associated with a variable under explicit
program control. The purpose of this commit is to read
allocated/associated DWARF tags and store them to the
main_type.

2014-05-28  Keven Boell  <keven.boell@intel.com>
            Sanimir Agovic  <sanimir.agovic@intel.com>

	* dwarf2read.c (set_die_type): Add reading of
	allocated/associated flags.
	* gdbtypes.h (struct main_type): Add allocated/
	associated dwarf2_prop attributes.
	(TYPE_ALLOCATED_PROP): New macro.
	(TYPE_ASSOCIATED_PROP): New macro.
	(TYPE_NOT_ALLOCATED): New macro.
	(TYPE_NOT_ASSOCIATED): New macro.

Change-Id: I44a9e21986de16de061b3ea2a7689f1bfa28ed2e

Signed-off-by: Keven Boell <keven.boell@intel.com>
---
 gdb/dwarf2read.c |   28 ++++++++++++++++++++++++++++
 gdb/gdbtypes.h   |   26 ++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 20886b0..f612cd8 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -21689,6 +21689,34 @@ set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu)
       && !HAVE_GNAT_AUX_INFO (type))
     INIT_GNAT_SPECIFIC (type);
 
+  /* Read DW_AT_allocated and set in type.  */
+  attr = dwarf2_attr (die, DW_AT_allocated, cu);
+  if (attr_form_is_block (attr))
+    {
+      struct dynamic_prop prop;
+
+      if (attr_to_dynamic_prop (attr, die, cu, &prop))
+        {
+          TYPE_ALLOCATED_PROP (type)
+            = obstack_alloc (&objfile->objfile_obstack, sizeof (prop));
+          *TYPE_ALLOCATED_PROP (type) = prop;
+        }
+    }
+
+  /* Read DW_AT_associated and set in type.  */
+  attr = dwarf2_attr (die, DW_AT_associated, cu);
+  if (attr_form_is_block (attr))
+    {
+      struct dynamic_prop prop;
+
+      if (attr_to_dynamic_prop (attr, die, cu, &prop))
+        {
+          TYPE_ASSOCIATED_PROP (type)
+            = obstack_alloc (&objfile->objfile_obstack, sizeof (prop));
+          *TYPE_ASSOCIATED_PROP (type) = prop;
+        }
+    }
+
   /* Read DW_AT_data_location and set in type.  */
   attr = dwarf2_attr (die, DW_AT_data_location, cu);
   if (attr_to_dynamic_prop (attr, die, cu, &prop))
diff --git a/gdb/gdbtypes.h b/gdb/gdbtypes.h
index 17b9fe0..bf0ae81 100644
--- a/gdb/gdbtypes.h
+++ b/gdb/gdbtypes.h
@@ -730,6 +730,18 @@ struct main_type
      this field yields to the location of the data for an object.  */
 
   struct dynamic_prop *data_location;
+
+  /* Structure for DW_AT_allocated.
+     The presence of this attribute indicates that the object of the type
+     can be allocated/deallocated.  The value can be a dwarf expression,
+     reference, or a constant.  */
+  struct dynamic_prop *allocated;
+
+  /* Structure for DW_AT_associated.
+     The presence of this attribute indicated that the object of the type
+     can be associated.  The value can be a dwarf expression,
+     reference, or a constant.  */
+  struct dynamic_prop *associated;
 };
 
 /* * A ``struct type'' describes a particular instance of a type, with
@@ -1218,6 +1230,20 @@ extern void allocate_gnat_aux_type (struct type *);
   TYPE_DATA_LOCATION (thistype)->data.const_val
 #define TYPE_DATA_LOCATION_KIND(thistype) \
   TYPE_DATA_LOCATION (thistype)->kind
+#define TYPE_ALLOCATED_PROP(thistype) TYPE_MAIN_TYPE(thistype)->allocated
+#define TYPE_ASSOCIATED_PROP(thistype) TYPE_MAIN_TYPE(thistype)->associated
+
+/* Allocated status of type object.  If set to non-zero it means the object
+   is allocated. A zero value means it is not allocated.  */
+#define TYPE_NOT_ALLOCATED(t)  (TYPE_ALLOCATED_PROP (t) \
+  && TYPE_ALLOCATED_PROP (t)->kind == PROP_CONST \
+  && !TYPE_ALLOCATED_PROP (t)->data.const_val)
+
+/* Associated status of type object.  If set to non-zero it means the object
+   is associated. A zero value means it is not associated.  */
+#define TYPE_NOT_ASSOCIATED(t)  (TYPE_ASSOCIATED_PROP (t) \
+  && TYPE_ASSOCIATED_PROP (t)->kind == PROP_CONST \
+  && !TYPE_ASSOCIATED_PROP (t)->data.const_val)
 
 /* Moto-specific stuff for FORTRAN arrays.  */
 
-- 
1.7.9.5