--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwasm/pass3.c	Wed Jan 19 22:27:17 2011 -0700
@@ -0,0 +1,73 @@
+/*
+pass3.c
+
+Copyright © 2010 William Astle
+
+This file is part of LWTOOLS.
+
+LWTOOLS 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 <stdio.h>
+#include <string.h>
+
+#include <lw_alloc.h>
+#include <lw_string.h>
+
+#include "lwasm.h"
+#include "instab.h"
+
+/*
+Resolve1 Pass
+
+repeatedly resolve instruction sizes and line addresses
+until nothing more reduces
+
+*/
+void do_pass3(asmstate_t *as)
+{
+	int rc;
+	line_t *cl;
+	struct line_expr_s *le;
+	
+	do
+	{
+		rc = 0;
+		for (cl = as -> line_head; cl; cl = cl -> next)
+		{
+			as -> cl = cl;
+			
+			// simplify address
+			lwasm_reduce_expr(as, cl -> addr);
+		
+			// simplify each expression
+			for (le = cl -> exprs; le; le = le -> next)
+				lwasm_reduce_expr(as, le -> expr);
+			
+			if (cl -> len == -1)
+			{
+				// try resolving the instruction length
+				// but don't force resolution
+				if (cl -> insn >= 0 && instab[cl -> insn].resolve)
+				{
+					(instab[cl -> insn].resolve)(as, cl, 0);
+					if (cl -> len != -1)
+						rc++;
+				}
+			}
+		}
+		if (as -> errorcount > 0)
+			return;
+	} while (rc > 0);
+}