external/bsd/libdwarf/dist/dwarf_errmsg.c

   1 /*      $NetBSD$        */
   2
   3 /*-
   4  * Copyright (c) 2007 John Birrell (jb@freebsd.org)
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/lib/libdwarf/dwarf_errmsg.c,v 1.1.4.1 2009/08/03 08:13:06 kensmith Exp $
  29  */
  30
  31 #include <stdio.h>
  32 #include "_libdwarf.h"
  33
  34 const char *_libdwarf_errors[] = {
  35 #define DEFINE_ERROR(N,S)               [DWARF_E_##N] = S
  36         DEFINE_ERROR(NONE,              "No Error"),
  37         DEFINE_ERROR(ERROR,             "An error"),
  38         DEFINE_ERROR(NO_ENTRY,          "No entry found"),
  39         DEFINE_ERROR(ARGUMENT,          "Invalid argument"),
  40         DEFINE_ERROR(DEBUG_INFO,        "Debug info NULL"),
  41         DEFINE_ERROR(MEMORY,            "Insufficient memory"),
  42         DEFINE_ERROR(ELF,               "ELF error"),
  43         DEFINE_ERROR(INVALID_CU,        "Invalid compilation unit data"),
  44         DEFINE_ERROR(CU_VERSION,        "Wrong CU version. Only 2 and 3 supported"),
  45         DEFINE_ERROR(MISSING_ABBREV,    "Abbrev not found"),
  46         DEFINE_ERROR(NOT_IMPLEMENTED,   "Unimplemented code at"),
  47         DEFINE_ERROR(CU_CURRENT,        "No current compilation unit"),
  48         DEFINE_ERROR(BAD_FORM,          "Wrong form type for attribute value"),
  49         DEFINE_ERROR(INVALID_EXPR,      "Invalid DWARF expression"),
  50         DEFINE_ERROR(NUM,               "Unknown DWARF error")
  51 #undef  DEFINE_ERROR
  52 };
  53
  54 const char *
  55 dwarf_errmsg(Dwarf_Error *error)
  56 {
  57         const char *p;
  58
  59         if (error == NULL)
  60                 return NULL;
  61
  62         if (error->err_error < 0 || error->err_error >= DWARF_E_NUM)
  63                 return _libdwarf_errors[DWARF_E_NUM];
  64         else if (error->err_error == DWARF_E_NONE)
  65                 return _libdwarf_errors[DWARF_E_NONE];
  66         else
  67                 p = _libdwarf_errors[error->err_error];
  68
  69         if (error->err_error == DWARF_E_ELF)
  70                 snprintf(error->err_msg, sizeof(error->err_msg),
  71                     "ELF error : %s [%s(%d)]", elf_errmsg(error->elf_error),
  72                     error->err_func, error->err_line);
  73         else
  74                 snprintf(error->err_msg, sizeof(error->err_msg),
  75                     "%s [%s(%d)]", p, error->err_func, error->err_line);
  76
  77         return (const char *) error->err_msg;
  78 }