--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/tools/gendec.h	Thu Aug 23 12:33:27 2007 +0000
@@ -0,0 +1,84 @@
+/**
+ * $Id: gendec.h,v 1.1 2007-08-23 12:33:27 nkeynes Exp $
+ *
+ * mem is responsible for creating and maintaining the overall system memory
+ * map, as visible from the SH4 processor. (Note the ARM has a different map)
+ *
+ * Copyright (c) 2005 Nathan Keynes.
+ *
+ * This program 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 2 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.
+ */
+
+#ifndef gendec_H
+#define gendec_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MAX_OPERAND_NAME 8
+#define MAX_OPERANDS 4
+#define MAX_OPERATION_FORMAT 64
+#define MAX_RULES 512
+
+#define USE_NONE 0
+#define USE_READ 1
+#define USE_WRITE 2
+#define USE_READWRITE 3
+
+struct operand {
+    int bit_count;
+    int bit_shift;
+    int left_shift;
+    int is_signed;
+    int use_mode;
+    char name[MAX_OPERAND_NAME+1];
+};
+
+struct rule {
+    uint32_t bits;
+    uint32_t mask;
+    int bit_count;
+    int operand_count;
+    int flags_use_mode;
+    struct operand operands[MAX_OPERANDS];
+    char format[MAX_OPERATION_FORMAT+1];
+};
+
+struct ruleset {
+    uint32_t rule_count;
+    struct rule *rules[MAX_RULES];
+};
+
+struct ruleset *parse_ruleset_file( FILE *f );
+    void dump_ruleset( struct ruleset *rules, FILE *f );
+
+struct action {
+    char operand_names[MAX_OPERANDS][MAX_OPERAND_NAME+1];
+    char *body;
+};
+
+struct actionset {
+    char *pretext;
+    char *posttext;
+    char *actions[MAX_RULES];
+};
+
+struct actionset *parse_action_file( struct ruleset *rules, FILE *f );
+
+int generate_decoder( struct ruleset *rules, struct actionset *actions, FILE *f );
+
+#ifdef __cplusplus
+}
+#endif
+#endif