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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright (c) 1997-1999 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 #include <stdio.h>
28 #include <unistd.h>
29 #include <sys/types.h>
30 #include "parser.h"
31 #include "trace.h"
32 #include "util.h"
33 #include "db.h"
34 #include "symtab.h"
35 #include "io.h"
36 #include "printfuncs.h"
37 #include "errlog.h"
38 #include "parseproto.h"
39
40 static void generate_interface_predeclaration(char *, ENTRY *);
41 static void generate_linkage_function(char *, char *);
42
43
44 /*
45 * generate_linkage -- make code for the linkage part of an individual
46 * interface. Assumes Bodyfp.
47 */
48 void
generate_linkage(ENTRY * function)49 generate_linkage(ENTRY *function)
50 {
51 char *library_name = db_get_current_library(),
52 *function_name;
53 char composite_name[MAXLINE];
54
55 errlog(BEGIN, "generate_linkage() {");
56
57 function_name = name_of(function);
58 (void) snprintf(composite_name, sizeof (composite_name),
59 "%s_%s", library_name, function_name);
60
61 /* Print the predeclaration of the interceptor. */
62 generate_interface_predeclaration(composite_name, function);
63 /* Collect things we'll use more than once. */
64
65 /* Next the struct used to pass parameters. */
66 (void) fprintf(Bodyfp, "static abisym_t __abi_%s_%s_sym;\n",
67 library_name, function_name);
68
69 /* The linkage function, */
70 generate_linkage_function(library_name, function_name);
71
72 (void) fputs("\n\n", Bodyfp);
73 errlog(END, "}");
74 }
75
76
77 /*
78 * generate_interface_predeclaration -- make things know so the compiler
79 * won't kak.
80 */
81 static void
generate_interface_predeclaration(char * composite_name,ENTRY * function)82 generate_interface_predeclaration(char *composite_name, ENTRY *function)
83 {
84 decl_t *pp;
85 char *p = symtab_get_prototype();
86 char buf[BUFSIZ];
87
88 (void) fprintf(Bodyfp, "\n/* from \"%s\", line %d */\n",
89 symtab_get_filename(), line_of(function));
90 (void) fprintf(Bodyfp, "static ");
91
92 if (p[strlen(p)-1] != ';')
93 (void) snprintf(buf, BUFSIZ, "%s;", strnormalize(p));
94 else
95 (void) snprintf(buf, BUFSIZ, "%s", strnormalize(p));
96
97 decl_Parse(buf, &pp);
98 decl_AddArgNames(pp);
99 symtab_set_prototype(decl_ToString(buf, DTS_DECL, pp, composite_name));
100 (void) fprintf(Bodyfp, "%s;\n", symtab_get_prototype());
101 decl_Destroy(pp);
102 }
103
104
105
106 /*
107 * generate_linkage_function -- The linkage function itself.
108 */
109 static void
generate_linkage_function(char * lib,char * func)110 generate_linkage_function(char *lib, char *func)
111 {
112 (void) fprintf(Bodyfp,
113 "void *__abi_%s_%s(void *real, int vflag) { \n", lib, func);
114 (void) fprintf(Bodyfp, " ABI_REAL(%s, %s) = real;\n", lib, func);
115 (void) fprintf(Bodyfp, " ABI_VFLAG(%s, %s) = vflag;\n", lib, func);
116 (void) fprintf(Bodyfp,
117 " return ((void *) %s_%s);\n}\n", lib, func);
118 }
119