--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwasm/insn_rtor.c	Wed Mar 31 20:12:20 2010 -0600
@@ -0,0 +1,62 @@
+/*
+insn_rtor.c
+Copyright © 2010 William Astle
+
+This file is part of LWASM.
+
+LWASM is free software: you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#include <config.h>
+
+#include "lwasm.h"
+#include "instab.h"
+
+PARSEFUNC(insn_parse_rtor)
+{
+	int r0, r1;
+
+	static const char *regs = "D X Y U S PCW V A B CCDP0 0 E F ";
+	static const char *regs9 = "D X Y U S PC    A B CCDP        ";
+		
+	// register to register (r0,r1)
+	// registers are in order:
+	// D,X,Y,U,S,PC,W,V
+	// A,B,CC,DP,0,0,E,F
+
+	r0 = lwasm_lookupreg2((as -> target == TARGET_6309) ? regs9 : regs, p);
+	if (r0 < 0 || *(*p)++ != ',')
+	{
+		lwasm_register_error(as, l, "Bad operand");
+		r0 = r1 = 0;
+	}
+	else
+	{
+		r1 = lwasm_lookupreg2((as -> target = TARGET_6309) ? regs9 : regs, p);
+		if (r1 < 0)
+		{
+			lwasm_register_error(as, l, "Bad operand");
+			r0 = r1 = 0;
+		}
+	}
+	l -> pb = (r0 << 4) | r1;
+	l -> len = OPLEN(instab[l -> insn].ops[0]) + 1;
+}
+
+EMITFUNC(insn_emit_rtor)
+{
+	lwasm_emitop(l, instab[l -> insn].ops[0]);
+	lwasm_emit(l, l -> pb);
+}