xref: /illumos-gate/usr/src/cmd/rpcgen/rpc_tblout.c (revision a2f144d1eca25f33af1e19affd8eda208f547108)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
28 /*
29  * University Copyright- Copyright (c) 1982, 1986, 1988
30  * The Regents of the University of California
31  * All Rights Reserved
32  *
33  * University Acknowledgment- Portions of this document are derived from
34  * software developed by the University of California, Berkeley, and its
35  * contributors.
36  */
37 
38 /*
39  * rpc_tblout.c, Dispatch table outputter for the RPC protocol compiler
40  */
41 #include <stdio.h>
42 #include <string.h>
43 #include "rpc_parse.h"
44 #include "rpc_util.h"
45 
46 extern int nullproc(proc_list *);
47 
48 static void write_table(definition *);
49 static void printit(char *, char *);
50 
51 #define	TABSIZE		8
52 #define	TABCOUNT	5
53 #define	TABSTOP		(TABSIZE*TABCOUNT)
54 
55 static char tabstr[TABCOUNT+1] = "\t\t\t\t\t";
56 
57 static char tbl_hdr[] = "struct rpcgen_table %s_table[] = {\n";
58 static char tbl_end[] = "};\n";
59 
60 static char null_entry_b[] = "\n\t(char *(*)())0,\n"
61 			" \t(xdrproc_t)xdr_void,\t\t\t0,\n"
62 			" \t(xdrproc_t)xdr_void,\t\t\t0,\n";
63 
64 static char null_entry[] = "\n\t(void *(*)())0,\n"
65 			" \t(xdrproc_t)xdr_void,\t\t\t0,\n"
66 			" \t(xdrproc_t)xdr_void,\t\t\t0,\n";
67 
68 
69 static char tbl_nproc[] = "int %s_nproc =\n\tsizeof(%s_table)"
70 				"/sizeof(%s_table[0]);\n\n";
71 
72 void
write_tables(void)73 write_tables(void)
74 {
75 	list *l;
76 	definition *def;
77 
78 	f_print(fout, "\n");
79 	for (l = defined; l != NULL; l = l->next) {
80 		def = (definition *)l->val;
81 		if (def->def_kind == DEF_PROGRAM) {
82 			write_table(def);
83 		}
84 	}
85 }
86 
87 static void
write_table(definition * def)88 write_table(definition *def)
89 {
90 	version_list *vp;
91 	proc_list *proc;
92 	int current;
93 	int expected;
94 	char progvers[100];
95 	int warning;
96 
97 	for (vp = def->def.pr.versions; vp != NULL; vp = vp->next) {
98 		warning = 0;
99 		(void) snprintf(progvers, sizeof (progvers), "%s_%s",
100 		    locase(def->def_name), vp->vers_num);
101 		/* print the table header */
102 		f_print(fout, tbl_hdr, progvers);
103 
104 		if (nullproc(vp->procs)) {
105 			expected = 0;
106 		} else {
107 			expected = 1;
108 			if (tirpcflag)
109 				f_print(fout, null_entry);
110 			else
111 				f_print(fout, null_entry_b);
112 		}
113 		for (proc = vp->procs; proc != NULL; proc = proc->next) {
114 			current = atoi(proc->proc_num);
115 			if (current != expected++) {
116 				f_print(fout,
117 			"\n/*\n * WARNING: table out of order\n */\n");
118 				if (warning == 0) {
119 					f_print(stderr,
120 				    "WARNING %s table is out of order\n",
121 					    progvers);
122 					warning = 1;
123 					nonfatalerrors = 1;
124 				}
125 				expected = current + 1;
126 			}
127 			if (tirpcflag)
128 				f_print(fout,
129 				    "\n\t(void *(*)())RPCGEN_ACTION(");
130 			else
131 				f_print(fout,
132 				    "\n\t(char *(*)())RPCGEN_ACTION(");
133 
134 			/* routine to invoke */
135 			if (Cflag && !newstyle)
136 				pvname_svc(proc->proc_name, vp->vers_num);
137 			else {
138 				if (newstyle) /* calls internal func */
139 					f_print(fout, "_");
140 				pvname(proc->proc_name, vp->vers_num);
141 			}
142 			f_print(fout, "),\n");
143 
144 			/* argument info */
145 			if (proc->arg_num > 1)
146 				printit(NULL, proc->args.argname);
147 			else
148 			/* do we have to do something special for newstyle */
149 				printit(proc->args.decls->decl.prefix,
150 				    proc->args.decls->decl.type);
151 			/* result info */
152 			printit(proc->res_prefix, proc->res_type);
153 		}
154 
155 		/* print the table trailer */
156 		f_print(fout, tbl_end);
157 		f_print(fout, tbl_nproc, progvers, progvers, progvers);
158 	}
159 }
160 
161 static void
printit(char * prefix,char * type)162 printit(char *prefix, char *type)
163 {
164 	int len;
165 	int tabs;
166 
167 
168 	if (streq(type, "oneway"))
169 		len = fprintf(fout, "\t(xdrproc_t)xdr_void,");
170 	else
171 		len = fprintf(fout, "\t(xdrproc_t)xdr_%s,", stringfix(type));
172 	/* account for leading tab expansion */
173 	len += TABSIZE - 1;
174 	if (len >= TABSTOP) {
175 		f_print(fout, "\n");
176 		len = 0;
177 	}
178 	/* round up to tabs required */
179 	tabs = (TABSTOP - len + TABSIZE - 1)/TABSIZE;
180 	f_print(fout, "%s", &tabstr[TABCOUNT-tabs]);
181 
182 	if (streq(type, "void") || streq(type, "oneway")) {
183 		f_print(fout, "0");
184 	} else {
185 		f_print(fout, "sizeof ( ");
186 		/* XXX: should "follow" be 1 ??? */
187 		ptype(prefix, type, 0);
188 		f_print(fout, ")");
189 	}
190 	f_print(fout, ",\n");
191 }
192