dwarf_errmsg.c revision 272461
1/*- 2 * Copyright (c) 2007 John Birrell (jb@freebsd.org) 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: releng/10.1/lib/libdwarf/dwarf_errmsg.c 241720 2012-10-19 05:43:38Z ed $ 27 */ 28 29#include <stdio.h> 30#include "_libdwarf.h" 31 32static const char *_libdwarf_errors[] = { 33#define DEFINE_ERROR(N,S) [DWARF_E_##N] = S 34 DEFINE_ERROR(NONE, "No Error"), 35 DEFINE_ERROR(ERROR, "An error"), 36 DEFINE_ERROR(NO_ENTRY, "No entry found"), 37 DEFINE_ERROR(ARGUMENT, "Invalid argument"), 38 DEFINE_ERROR(DEBUG_INFO, "Debug info NULL"), 39 DEFINE_ERROR(MEMORY, "Insufficient memory"), 40 DEFINE_ERROR(ELF, "ELF error"), 41 DEFINE_ERROR(INVALID_CU, "Invalid compilation unit data"), 42 DEFINE_ERROR(CU_VERSION, "Wrong CU version. Only 2 and 3 supported"), 43 DEFINE_ERROR(MISSING_ABBREV, "Abbrev not found"), 44 DEFINE_ERROR(NOT_IMPLEMENTED, "Unimplemented code at"), 45 DEFINE_ERROR(CU_CURRENT, "No current compilation unit"), 46 DEFINE_ERROR(BAD_FORM, "Wrong form type for attribute value"), 47 DEFINE_ERROR(INVALID_EXPR, "Invalid DWARF expression"), 48 DEFINE_ERROR(NUM, "Unknown DWARF error") 49#undef DEFINE_ERROR 50}; 51 52const char * 53dwarf_errmsg(Dwarf_Error *error) 54{ 55 const char *p; 56 57 if (error == NULL) 58 return NULL; 59 60 if (error->err_error < 0 || error->err_error >= DWARF_E_NUM) 61 return _libdwarf_errors[DWARF_E_NUM]; 62 else if (error->err_error == DWARF_E_NONE) 63 return _libdwarf_errors[DWARF_E_NONE]; 64 else 65 p = _libdwarf_errors[error->err_error]; 66 67 if (error->err_error == DWARF_E_ELF) 68 snprintf(error->err_msg, sizeof(error->err_msg), 69 "ELF error : %s [%s(%d)]", elf_errmsg(error->elf_error), 70 error->err_func, error->err_line); 71 else 72 snprintf(error->err_msg, sizeof(error->err_msg), 73 "%s [%s(%d)]", p, error->err_func, error->err_line); 74 75 return (const char *) error->err_msg; 76} 77