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 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Copyright 2018 Jason King. 27 */ 28 29 #include <dlfcn.h> 30 #include <stdarg.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <demangle-sys.h> 34 35 #include "dis_util.h" 36 37 int g_error; /* global process exit status, set when warn() is called */ 38 39 /* 40 * Fatal error. Print out the error with a leading "dis: ", and then exit the 41 * program. 42 */ 43 void 44 die(const char *fmt, ...) 45 { 46 va_list ap; 47 48 (void) fprintf(stderr, "dis: fatal: "); 49 50 va_start(ap, fmt); 51 (void) vfprintf(stderr, fmt, ap); 52 va_end(ap); 53 54 (void) fprintf(stderr, "\n"); 55 56 exit(1); 57 } 58 59 /* 60 * Non-fatal error. Print out the error with a leading "dis: ", set the global 61 * error flag, and return. 62 */ 63 void 64 warn(const char *fmt, ...) 65 { 66 va_list ap; 67 68 (void) fprintf(stderr, "dis: warning: "); 69 70 va_start(ap, fmt); 71 (void) vfprintf(stderr, fmt, ap); 72 va_end(ap); 73 74 (void) fprintf(stderr, "\n"); 75 76 g_error = 1; 77 } 78 79 /* 80 * Convenience wrapper around malloc() to cleanly exit if any allocation fails. 81 */ 82 void * 83 safe_malloc(size_t size) 84 { 85 void *ret; 86 87 if ((ret = calloc(1, size)) == NULL) 88 die("Out of memory"); 89 90 return (ret); 91 } 92 93 94 /* 95 * Since the -C flag explicitly says C++, for now at least, force language to 96 * C++ 97 */ 98 const char * 99 dis_demangle(const char *name) 100 { 101 static char *demangled_name = NULL; 102 103 /* 104 * Since demangled_name is static, it may be preserved across 105 * invocations. As such, make sure any memory that might be present 106 * from previous invocations is freed. 107 */ 108 free(demangled_name); 109 demangled_name = sysdemangle(name, SYSDEM_LANG_CPP, NULL); 110 return ((demangled_name != NULL) ? demangled_name : name); 111 } 112