1 /* 2 3 Copyright (C) 2000,2002,2004 Silicon Graphics, Inc. All Rights Reserved. 4 Portions Copyright 2011 David Anderson. All Rights Reserved. 5 6 This program is free software; you can redistribute it and/or modify it 7 under the terms of version 2.1 of the GNU Lesser General Public License 8 as published by the Free Software Foundation. 9 10 This program is distributed in the hope that it would be useful, but 11 WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 13 14 Further, this software is distributed without any warranty that it is 15 free of the rightful claim of any third person regarding infringement 16 or the like. Any license provided herein, whether implied or 17 otherwise, applies only to this software file. Patent licenses, if 18 any, provided herein do not apply to combinations of this program with 19 other software, or any other product whatsoever. 20 21 You should have received a copy of the GNU Lesser General Public 22 License along with this program; if not, write the Free Software 23 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301, 24 USA. 25 26 */ 27 28 #include "config.h" 29 #include "libdwarfdefs.h" 30 31 #include <stdio.h> 32 #include <sys/stat.h> 33 #include <sys/types.h> 34 #ifdef HAVE_STDLIB_H 35 #include <stdlib.h> /* for exit(), C89 malloc */ 36 #endif /* HAVE_STDLIB_H */ 37 #include "pro_incl.h" 38 #include <stddef.h> 39 #include "dwarf.h" 40 #include "libdwarf.h" 41 #include "pro_opaque.h" 42 #include "pro_error.h" 43 #include "pro_alloc.h" 44 45 46 extern char *_dwarf_errmsgs[]; 47 48 /* 49 This function performs error handling as described in the 50 libdwarf consumer document section 3. Dbg is the Dwarf_P_debug 51 structure being processed. Error is a pointer to the pointer 52 to the error descriptor that will be returned. Errval is an 53 error code listed in dwarf_error.h. 54 55 The error number may be retrieved from the Dwarf_Error 56 by calling dwarf_errno(). 57 The error string implied by the error number may be retrieved 58 from the Dwarf_Error by calling dwarf_errmsg(). 59 */ 60 void 61 _dwarf_p_error(Dwarf_P_Debug dbg, 62 Dwarf_Error * error, Dwarf_Unsigned errval) 63 { 64 Dwarf_Error errptr; 65 66 if (errval > DW_DLE_LAST) { 67 /* We do not expect to ever see such an error number, 68 DW_DLE_LO_USER is not used. */ 69 fprintf(stderr,"ERROR VALUE: %lu - %s\n", 70 (unsigned long) errval, "this error value is unknown to libdwarf."); 71 } 72 /* Allow NULL dbg on entry, since sometimes that can happen and we 73 want to report the upper-level error, not this one. */ 74 if (error != NULL) { 75 errptr = (Dwarf_Error) 76 _dwarf_p_get_alloc(dbg, sizeof(struct Dwarf_Error_s)); 77 if (errptr == NULL) { 78 fprintf(stderr, 79 "Could not allocate Dwarf_Error structure\n"); 80 abort(); 81 } 82 errptr->er_errval = (Dwarf_Signed) errval; 83 *error = errptr; 84 return; 85 } 86 87 if (dbg != NULL && dbg->de_errhand != NULL) { 88 errptr = (Dwarf_Error) 89 _dwarf_p_get_alloc(dbg, sizeof(struct Dwarf_Error_s)); 90 if (errptr == NULL) { 91 fprintf(stderr, 92 "Could not allocate Dwarf_Error structure\n"); 93 abort(); 94 } 95 errptr->er_errval = (Dwarf_Signed) errval; 96 dbg->de_errhand(errptr, dbg->de_errarg); 97 return; 98 } 99 100 abort(); 101 } 102