Updating to reflect the latest work

[zilutils.git] / zilasm / labels.cpp

diff --git a/zilasm/labels.cpp b/zilasm/labels.cpp
new file mode 100644 (file)
index 0000000..c8f97f9
--- /dev/null
+++ b/zilasm/labels.cpp
@@ -0,0 +1,49 @@
+/*
+ * labels.c -- part of ZilUtils/ZilAsm
+ *
+ * Copyright (C) 2016, 2019 Jason Self <j@jxself.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+#include <assert.h>
+
+#include "labels.h"
+
+Symtable *Global_labels;
+Symtable *Local_labels;
+
+const unsigned MAX_GLOBAL_LABELS = 1024;
+const unsigned MAX_LOCAL_LABELS = 256;
+const unsigned MAX_LABEL_LEN = 32;
+const unsigned ADDRESS_SIZE = sizeof (long long);      /* TODO!!! */
+
+void
+init_local_labels (void)
+{
+  if (Local_labels)
+    symtable_destroy (Local_labels);
+  Local_labels =
+    symtable_create (MAX_LOCAL_LABELS, MAX_LABEL_LEN, ADDRESS_SIZE);
+}
+
+void
+init_global_labels (void)
+{
+  assert (Global_labels);
+  Global_labels =
+    symtable_create (MAX_GLOBAL_LABELS, MAX_LABEL_LEN, ADDRESS_SIZE);
+}