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      1 /* Error handling in libasm.
      2    Copyright (C) 2002, 2004, 2005, 2009 Red Hat, Inc.
      3    This file is part of elfutils.
      4    Written by Ulrich Drepper <drepper (at) redhat.com>, 2002.
      5 
      6    This file is free software; you can redistribute it and/or modify
      7    it under the terms of either
      8 
      9      * the GNU Lesser General Public License as published by the Free
     10        Software Foundation; either version 3 of the License, or (at
     11        your option) any later version
     12 
     13    or
     14 
     15      * the GNU General Public License as published by the Free
     16        Software Foundation; either version 2 of the License, or (at
     17        your option) any later version
     18 
     19    or both in parallel, as here.
     20 
     21    elfutils is distributed in the hope that it will be useful, but
     22    WITHOUT ANY WARRANTY; without even the implied warranty of
     23    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     24    General Public License for more details.
     25 
     26    You should have received copies of the GNU General Public License and
     27    the GNU Lesser General Public License along with this program.  If
     28    not, see <http://www.gnu.org/licenses/>.  */
     29 
     30 #ifdef HAVE_CONFIG_H
     31 # include <config.h>
     32 #endif
     33 
     34 #include <libintl.h>
     35 #include <stdbool.h>
     36 #include <stdlib.h>
     37 
     38 #include "libasmP.h"
     39 
     40 
     41 /* This is the key for the thread specific memory.  */
     42 static __thread int global_error;
     43 
     44 
     45 int
     46 asm_errno (void)
     47 {
     48   int result = global_error;
     49   global_error = ASM_E_NOERROR;
     50   return result;
     51 }
     52 
     53 
     54 void
     55 internal_function
     56 __libasm_seterrno (int value)
     57 {
     58   global_error = value;
     59 }
     60 
     61 
     62 /* Return the appropriate message for the error.  */
     63 static const char *msgs[ASM_E_NUM] =
     64 {
     65   [ASM_E_NOERROR] = N_("no error"),
     66   [ASM_E_NOMEM] = N_("out of memory"),
     67   [ASM_E_CANNOT_CREATE] = N_("cannot create output file"),
     68   [ASM_E_INVALID] = N_("invalid parameter"),
     69   [ASM_E_CANNOT_CHMOD] = N_("cannot change mode of output file"),
     70   [ASM_E_CANNOT_RENAME] = N_("cannot rename output file"),
     71   [ASM_E_DUPLSYM] = N_("duplicate symbol"),
     72   [ASM_E_TYPE] = N_("invalid section type for operation"),
     73   [ASM_E_IOERROR] = N_("error during output of data"),
     74   [ASM_E_ENOSUP] = N_("no backend support available"),
     75 };
     76 
     77 const char *
     78 asm_errmsg (int error)
     79 {
     80   int last_error = global_error;
     81 
     82   if (error < -1)
     83     return _("unknown error");
     84   if (error == 0 && last_error == 0)
     85     /* No error.  */
     86     return NULL;
     87 
     88   if (error != -1)
     89     last_error = error;
     90 
     91   if (last_error == ASM_E_LIBELF)
     92     return elf_errmsg (-1);
     93 
     94   return _(msgs[last_error]);
     95 }
     96