new file

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@3245 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/asn1/gen_glue.c

@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 1997 Kungliga Tekniska H<>gskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. All advertising materials mentioning features or use of this software 
+ *    must display the following acknowledgement: 
+ *      This product includes software developed by Kungliga Tekniska 
+ *      H<>gskolan and its contributors. 
+ *
+ * 4. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#include "gen_locl.h"
+
+RCSID("$Id$");
+
+static void
+generate_2int (Symbol *s)
+{
+    Type *t = s->type;
+    Member *m;
+    int tag = -1;
+
+    fprintf (headerfile,
+	     "int %s2int(%s);\n",
+	     s->gen_name, s->gen_name);
+
+    fprintf (codefile,
+	     "int %s2int(%s f)\n"
+	     "{\n"
+	     "\treturn\n",
+	     s->gen_name, s->gen_name);
+
+    for (m = t->members; m && m->val != tag; m = m->next) {
+	fprintf (codefile, "\t(f.%s << %d) |\n",
+		 m->gen_name, m->val);
+	
+	if (tag == -1)
+	    tag = m->val;
+    }
+    fprintf (codefile, "\t0;\n"
+	     "}\n\n");
+}
+
+static void
+generate_int2 (Symbol *s)
+{
+    Type *t = s->type;
+    Member *m;
+    int tag = -1;
+
+    fprintf (headerfile,
+	     "%s int2%s(int);\n",
+	     s->gen_name, s->gen_name);
+
+    fprintf (codefile,
+	     "%s int2%s(int n)\n"
+	     "{\n"
+	     "\t%s flags;\n\n",
+	     s->gen_name, s->gen_name, s->gen_name);
+
+    for (m = t->members; m && m->val != tag; m = m->next) {
+	fprintf (codefile, "\tflags.%s = (n >> %d) & 1;\n",
+		 m->gen_name, m->val);
+	
+	if (tag == -1)
+	    tag = m->val;
+    }
+    fprintf (codefile, "\treturn flags;\n"
+	     "}\n\n");
+}
+
+/*
+ * This depends on the bit string being declared in increasing order
+ */
+
+static void
+generate_units (Symbol *s)
+{
+    Type *t = s->type;
+    Member *m;
+    int tag = -1;
+
+    fprintf (headerfile,
+	     "extern struct units %s_units[];",
+	     s->gen_name);
+
+    fprintf (codefile,
+	     "struct units %s_units[] = {\n",
+	     s->gen_name);
+
+    for (m = t->members->prev; m && m->val != tag; m = m->prev) {
+	fprintf (codefile,
+		 "\t{\"%s\",\t1 << %d},\n", m->gen_name, m->val);
+
+	if (tag == -1)
+	    tag = m->val;
+    }
+
+    fprintf (codefile,
+	     "\t{NULL,\t0}\n"
+	     "};\n\n");
+}
+
+void
+generate_glue (Symbol *s)
+{
+    switch(s->type->type) {
+    case TBitString :
+	generate_2int (s);
+	generate_int2 (s);
+	generate_units (s);
+	break;
+    default :
+	break;
+    }
+}