Branch data     Line data    Source code

       1                 :            : /* Get specific attribute of abbreviation.
       2                 :            :    Copyright (C) 2003, 2004, 2005, 2014, 2017 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 <assert.h>
      35                 :            : #include <dwarf.h>
      36                 :            : #include "libdwP.h"
      37                 :            : 
      38                 :            : 
      39                 :            : int
      40                 :     925542 : dwarf_getabbrevattr_data (Dwarf_Abbrev *abbrev, size_t idx,
      41                 :            :                           unsigned int *namep, unsigned int *formp,
      42                 :            :                           Dwarf_Sword *datap, Dwarf_Off *offsetp)
      43                 :            : {
      44         [ -  + ]:     925542 :   if (abbrev == NULL)
      45                 :            :     return -1;
      46                 :            : 
      47                 :     925542 :   size_t cnt = 0;
      48                 :     925542 :   const unsigned char *attrp = abbrev->attrp;
      49                 :    3672478 :   const unsigned char *start_attrp;
      50                 :    3672478 :   unsigned int name;
      51                 :    3672478 :   unsigned int form;
      52                 :    3672478 :   Dwarf_Word data;
      53                 :            : 
      54                 :    3672478 :   do
      55                 :            :     {
      56                 :    3672478 :       start_attrp = attrp;
      57                 :            : 
      58                 :            :       /* Attribute code and form are encoded as ULEB128 values.
      59                 :            :          Already checked when Dwarf_Abbrev was created, read unchecked.  */
      60                 :    3672478 :       get_uleb128_unchecked (name, attrp);
      61                 :    3672478 :       get_uleb128_unchecked (form, attrp);
      62                 :            : 
      63         [ +  + ]:    3672478 :       if (form == DW_FORM_implicit_const)
      64                 :     283502 :         get_sleb128_unchecked (data, attrp);
      65                 :            :       else
      66                 :            :         data = 0;
      67                 :            : 
      68                 :            :       /* If both values are zero the index is out of range.  */
      69         [ +  + ]:    3672478 :       if (name == 0 && form == 0)
      70                 :            :         return -1;
      71                 :            :     }
      72         [ +  + ]:    3510860 :   while (cnt++ < idx);
      73                 :            : 
      74                 :            :   /* Store the result if requested.  */
      75         [ +  - ]:     763924 :   if (namep != NULL)
      76                 :     763924 :     *namep = name;
      77         [ +  - ]:     763924 :   if (formp != NULL)
      78                 :     763924 :     *formp = form;
      79         [ +  + ]:     763924 :   if (datap != NULL)
      80                 :     763398 :     *datap = data;
      81         [ +  - ]:     763924 :   if (offsetp != NULL)
      82                 :     763924 :     *offsetp = (start_attrp - abbrev->attrp) + abbrev->offset;
      83                 :            : 
      84                 :            :   return 0;
      85                 :            : }
      86                 :            : INTDEF(dwarf_getabbrevattr_data)
      87                 :            : 
      88                 :            : int
      89                 :        526 : dwarf_getabbrevattr (Dwarf_Abbrev *abbrev, size_t idx, unsigned int *namep,
      90                 :            :                      unsigned int *formp, Dwarf_Off *offsetp)
      91                 :            : {
      92                 :        526 :   return INTUSE(dwarf_getabbrevattr_data) (abbrev, idx, namep, formp,
      93                 :            :                                            NULL, offsetp);
      94                 :            : }