diff lwasm/insn_logicmem.c @ 151:427e268e876b

renamed src to lwasm to better reflect its purpose
author lost
date Fri, 30 Jan 2009 04:01:55 +0000
parents src/insn_logicmem.c@8929e1ee99cf
children bae1e3ecdce1
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwasm/insn_logicmem.c	Fri Jan 30 04:01:55 2009 +0000
@@ -0,0 +1,63 @@
+/*
+insn_logicmem.c
+Copyright © 2009 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/>.
+
+Contains code for handling logic/mem instructions
+*/
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "lwasm.h"
+#include "instab.h"
+#include "expr.h"
+
+extern void insn_gen_aux(asmstate_t *as, lwasm_line_t *l, char **optr, int opnum, int extra);
+
+// for aim, oim, eim, tim
+// the immediate operand must be constant on pass 2
+OPFUNC(insn_logicmem)
+{
+	int rval, v1;
+	const char *p2;
+	lwasm_expr_stack_t *s;
+	
+	if (**p == '#')
+		(*p)++;
+	
+	rval = lwasm_expr_result2(as, l, p, 0, &v1, 1);
+	if (rval != 0)
+		v1 = 0;
+	if (rval == 1 && as -> passnum == 2)
+		register_error(as, l, 2, "Illegal external or intersegment reference");
+
+	if (v1 < -128 || v1 > 255)
+		register_error(as, l, 2, "Byte overflow");
+	
+	if (**p != ',' && **p != ';')
+	{
+		register_error(as, l, 1, "Bad operand");
+		return;
+	}
+	
+	(*p)++;
+
+	// now we have a general addressing mode - call for it
+	insn_gen_aux(as, l, p, opnum, v1 & 0xff);
+}