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       1                 :             : /* Get address range which includes given address.
       2                 :             :    Copyright (C) 2004, 2005 Red Hat, Inc.
       3                 :             :    This file is part of elfutils.
       4                 :             :    Written by Ulrich Drepper <drepper@redhat.com>, 2004.
       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 <libdwP.h>
      35                 :             : 
      36                 :             : 
      37                 :             : Dwarf_Arange *
      38                 :         124 : dwarf_getarange_addr (Dwarf_Aranges *aranges, Dwarf_Addr addr)
      39                 :             : {
      40         [ -  + ]:         124 :   if (aranges == NULL)
      41                 :             :     return NULL;
      42                 :             : 
      43                 :             :   /* The ranges are sorted by address, so we can use binary search.  */
      44                 :         124 :   size_t l = 0, u = aranges->naranges;
      45         [ +  + ]:         348 :   while (l < u)
      46                 :             :     {
      47                 :         182 :       size_t idx = (l + u) / 2;
      48         [ +  + ]:         182 :       if (addr < aranges->info[idx].addr)
      49                 :             :         u = idx;
      50         [ +  + ]:         104 :       else if (addr > aranges->info[idx].addr
      51         [ +  + ]:          82 :                && addr - aranges->info[idx].addr >= aranges->info[idx].length)
      52                 :          22 :         l = idx + 1;
      53                 :             :       else
      54                 :          82 :         return &aranges->info[idx];
      55                 :             :     }
      56                 :             : 
      57                 :          42 :   __libdw_seterrno (DWARF_E_NO_MATCH);
      58                 :          42 :   return NULL;
      59                 :             : }
      60                 :             : INTDEF(dwarf_getarange_addr)