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       1                 :            : /* Return string associated with given attribute.
       2                 :            :    Copyright (C) 2003-2010, 2013 Red Hat, Inc.
       3                 :            :    This file is part of elfutils.
       4                 :            :    Written by Ulrich Drepper <drepper@redhat.com>, 2003.
       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 <dwarf.h>
      35                 :            : #include "libdwP.h"
      36                 :            : 
      37                 :            : 
      38                 :            : const char *
      39                 :     688092 : dwarf_formstring (attrp)
      40                 :            :      Dwarf_Attribute *attrp;
      41                 :            : {
      42                 :            :   /* Ignore earlier errors.  */
      43         [ +  + ]:     688092 :   if (attrp == NULL)
      44                 :            :     return NULL;
      45                 :            : 
      46                 :            :   /* We found it.  Now determine where the string is stored.  */
      47         [ +  + ]:     682053 :   if (attrp->form == DW_FORM_string)
      48                 :            :     /* A simple inlined string.  */
      49                 :      31407 :     return (const char *) attrp->valp;
      50                 :            : 
      51                 :     650646 :   Dwarf *dbg = attrp->cu->dbg;
      52         [ +  + ]:     650646 :   Dwarf *dbg_ret = attrp->form == DW_FORM_GNU_strp_alt ? dbg->alt_dwarf : dbg;
      53                 :            : 
      54         [ -  + ]:     650646 :   if (unlikely (dbg_ret == NULL))
      55                 :            :     {
      56                 :          0 :       __libdw_seterrno (DWARF_E_NO_ALT_DEBUGLINK);
      57                 :            :       return NULL;
      58                 :            :     }
      59                 :            : 
      60                 :            : 
      61         [ +  - ]:     650646 :   if (unlikely (attrp->form != DW_FORM_strp
      62                 :            :                    && attrp->form != DW_FORM_GNU_strp_alt)
      63         [ -  + ]:     650646 :       || dbg_ret->sectiondata[IDX_debug_str] == NULL)
      64                 :            :     {
      65                 :          0 :       __libdw_seterrno (DWARF_E_NO_STRING);
      66                 :            :       return NULL;
      67                 :            :     }
      68                 :            : 
      69                 :            :   uint64_t off;
      70         [ +  - ]:     650646 :   if (__libdw_read_offset (dbg, dbg_ret, cu_sec_idx (attrp->cu), attrp->valp,
      71                 :     650646 :                            attrp->cu->offset_size, &off, IDX_debug_str, 1))
      72                 :            :     return NULL;
      73                 :            : 
      74                 :     688092 :   return (const char *) dbg_ret->sectiondata[IDX_debug_str]->d_buf + off;
      75                 :            : }
      76                 :     650646 : INTDEF(dwarf_formstring)