1 /* 2 * Copyright (c) 1997, 1999, 2000, 2003 - 2005 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Portions Copyright (c) 2009 Apple Inc. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "gen_locl.h" 37 38 RCSID("$Id$"); 39 40 static void 41 generate_2int (const Type *t, const char *gen_name) 42 { 43 Member *m; 44 45 fprintf (headerfile, 46 "unsigned %s2int(%s);\n", 47 gen_name, gen_name); 48 49 fprintf (codefile, 50 "unsigned %s2int(%s f)\n" 51 "{\n" 52 "unsigned r = 0;\n", 53 gen_name, gen_name); 54 55 ASN1_TAILQ_FOREACH(m, t->members, members) { 56 fprintf (codefile, "if(f.%s) r |= (1U << %d);\n", 57 m->gen_name, m->val); 58 } 59 fprintf (codefile, "return r;\n" 60 "}\n\n"); 61 } 62 63 static void 64 generate_int2 (const Type *t, const char *gen_name) 65 { 66 Member *m; 67 68 fprintf (headerfile, 69 "%s int2%s(unsigned);\n", 70 gen_name, gen_name); 71 72 fprintf (codefile, 73 "%s int2%s(unsigned n)\n" 74 "{\n" 75 "\t%s flags;\n\n" 76 "\tmemset(&flags, 0, sizeof(flags));\n\n", 77 gen_name, gen_name, gen_name); 78 79 if(t->members) { 80 ASN1_TAILQ_FOREACH(m, t->members, members) { 81 fprintf (codefile, "\tflags.%s = (n >> %d) & 1;\n", 82 m->gen_name, m->val); 83 } 84 } 85 fprintf (codefile, "\treturn flags;\n" 86 "}\n\n"); 87 } 88 89 /* 90 * This depends on the bit string being declared in increasing order 91 */ 92 93 static void 94 generate_units (const Type *t, const char *gen_name) 95 { 96 Member *m; 97 98 if (template_flag) { 99 fprintf (headerfile, 100 "extern const struct units *asn1_%s_table_units;\n", 101 gen_name); 102 fprintf (headerfile, "#define asn1_%s_units() (asn1_%s_table_units)\n", 103 gen_name, gen_name); 104 } else { 105 fprintf (headerfile, 106 "const struct units * asn1_%s_units(void);\n", 107 gen_name); 108 } 109 110 fprintf (codefile, 111 "static struct units %s_units[] = {\n", 112 gen_name); 113 114 if(t->members) { 115 ASN1_TAILQ_FOREACH_REVERSE(m, t->members, memhead, members) { 116 fprintf (codefile, 117 "\t{\"%s\",\t1U << %d},\n", m->name, m->val); 118 } 119 } 120 121 fprintf (codefile, 122 "\t{NULL,\t0}\n" 123 "};\n\n"); 124 125 if (template_flag) 126 fprintf (codefile, 127 "const struct units * asn1_%s_table_units = %s_units;\n", 128 gen_name, gen_name); 129 else 130 fprintf (codefile, 131 "const struct units * asn1_%s_units(void){\n" 132 "return %s_units;\n" 133 "}\n\n", 134 gen_name, gen_name); 135 136 137 } 138 139 void 140 generate_glue (const Type *t, const char *gen_name) 141 { 142 switch(t->type) { 143 case TTag: 144 generate_glue(t->subtype, gen_name); 145 break; 146 case TBitString : 147 if (!ASN1_TAILQ_EMPTY(t->members)) { 148 generate_2int (t, gen_name); 149 generate_int2 (t, gen_name); 150 generate_units (t, gen_name); 151 } 152 break; 153 default : 154 break; 155 } 156 } 157