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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 30 #include <stdio.h> 31 #include <unistd.h> 32 #include <sys/types.h> 33 #include "parser.h" 34 #include "trace.h" 35 #include "util.h" 36 #include "db.h" 37 #include "symtab.h" 38 #include "io.h" 39 #include "printfuncs.h" 40 #include "errlog.h" 41 #include "parseproto.h" 42 43 static void generate_interface_predeclaration(char *, ENTRY *); 44 static void generate_linkage_function(char *, char *); 45 46 47 /* 48 * generate_linkage -- make code for the linkage part of an individual 49 * interface. Assumes Bodyfp. 50 */ 51 void 52 generate_linkage(ENTRY *function) 53 { 54 char *library_name = db_get_current_library(), 55 *function_name; 56 char composite_name[MAXLINE]; 57 58 errlog(BEGIN, "generate_linkage() {"); 59 60 function_name = name_of(function); 61 (void) snprintf(composite_name, sizeof (composite_name), 62 "%s_%s", library_name, function_name); 63 64 /* Print the predeclaration of the interceptor. */ 65 generate_interface_predeclaration(composite_name, function); 66 /* Collect things we'll use more than once. */ 67 68 /* Next the struct used to pass parameters. */ 69 (void) fprintf(Bodyfp, "static abisym_t __abi_%s_%s_sym;\n", 70 library_name, function_name); 71 72 /* The linkage function, */ 73 generate_linkage_function(library_name, function_name); 74 75 (void) fputs("\n\n", Bodyfp); 76 errlog(END, "}"); 77 } 78 79 80 /* 81 * generate_interface_predeclaration -- make things know so the compiler 82 * won't kak. 83 */ 84 static void 85 generate_interface_predeclaration(char *composite_name, ENTRY *function) 86 { 87 decl_t *pp; 88 char *p = symtab_get_prototype(); 89 char buf[BUFSIZ]; 90 91 (void) fprintf(Bodyfp, "\n/* from \"%s\", line %d */\n", 92 symtab_get_filename(), line_of(function)); 93 (void) fprintf(Bodyfp, "static "); 94 95 if (p[strlen(p)-1] != ';') 96 (void) snprintf(buf, BUFSIZ, "%s;", strnormalize(p)); 97 else 98 (void) snprintf(buf, BUFSIZ, "%s", strnormalize(p)); 99 100 decl_Parse(buf, &pp); 101 decl_AddArgNames(pp); 102 symtab_set_prototype(decl_ToString(buf, DTS_DECL, pp, composite_name)); 103 (void) fprintf(Bodyfp, "%s;\n", symtab_get_prototype()); 104 decl_Destroy(pp); 105 } 106 107 108 109 /* 110 * generate_linkage_function -- The linkage function itself. 111 */ 112 static void 113 generate_linkage_function(char *lib, char *func) 114 { 115 (void) fprintf(Bodyfp, 116 "void *__abi_%s_%s(void *real, int vflag) { \n", lib, func); 117 (void) fprintf(Bodyfp, " ABI_REAL(%s, %s) = real;\n", lib, func); 118 (void) fprintf(Bodyfp, " ABI_VFLAG(%s, %s) = vflag;\n", lib, func); 119 (void) fprintf(Bodyfp, 120 " return ((void *) %s_%s);\n}\n", lib, func); 121 } 122