[Mono-dev] JIT: MonoReg to replace gssize for registers

Mark Mason mmason at upwardaccess.com
Thu Dec 11 14:40:16 EST 2008

Hello all,

Along the same lines as the SIZEOF_VOID_P change, I'd like to offer the
following new type to replace to use of 'gssize' when referring to a
machine register. 'gssize' comes from glib, and simply represents the
size of an integer -- which is not necessarily always the same as the
size of the underlying integer registers.

There are some other uses of gssize in mini/ that will need to be
updated as well, but this is a start.

Comments most welcome.

Thanks in advance,

Index: mini.h
--- mini.h	(revision 121269)
+++ mini.h	(working copy)
@@ -400,6 +400,13 @@
 	int size, align;
 } MonoMemcpyArgs;
+/* C type matching the size of a machine register. Not always the same
as 'int' */
+typedef gint32 MonoReg;
+typedef gint64 MonoReg;
 struct MonoInst {
  	guint16 opcode;
 	guint8  type; /* stack type */
@@ -415,7 +422,7 @@
 		union {
 			MonoInst *src;
 			MonoMethodVar *var;
-			gssize const_val;
+			MonoReg const_val;
 			gpointer p;
 			MonoMethod *method;
 			MonoMethodSignature *signature;

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