From 8f274f5b1dc74ace7d5b17a09096b3d1c16e1678 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Mon, 10 Dec 2012 14:40:43 +0900
Subject: [PATCH] Add convenience functions for getting a def's offset and
 size.

---
 tools/qfcc/include/def.h | 18 ++++++++++++++++++
 tools/qfcc/source/def.c  | 15 +++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/tools/qfcc/include/def.h b/tools/qfcc/include/def.h
index 774a16242..3f917bcb8 100644
--- a/tools/qfcc/include/def.h
+++ b/tools/qfcc/include/def.h
@@ -254,6 +254,24 @@ void initialize_def (struct symbol_s *sym, struct type_s *type,
 	\return			1 if the defs overlap, 0 otherwise.
 */
 int def_overlap (def_t *d1, def_t *d2);
+
+/** Convenience function for obtaining a def's actual offset.
+
+	Takes care of an alias def's relative offset.
+
+	\param def		The def of which to obtain the offset. May be an alias def.
+	\return			The actual offset of the def in the def's defspace.
+*/
+int def_offset (def_t *def);
+
+/** Convenience function for obtaining a def's size.
+
+	Whether the def is an alias or not is irrelevant.
+
+	\param def		The def of which to obtain the size.
+	\return			The size of the def.
+*/
+int def_size (def_t *def);
 //@}
 
 #endif//__def_h
diff --git a/tools/qfcc/source/def.c b/tools/qfcc/source/def.c
index 82b79b9e1..ebe8bf7b5 100644
--- a/tools/qfcc/source/def.c
+++ b/tools/qfcc/source/def.c
@@ -611,3 +611,18 @@ def_overlap (def_t *d1, def_t *d2)
 		return 1;
 	return 0;
 }
+
+int
+def_offset (def_t *def)
+{
+	int         offset = def->offset;
+	if (def->alias)
+		offset += def->alias->offset;
+	return offset;
+}
+
+int
+def_size (def_t *def)
+{
+	return type_size (def->type);
+}