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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                 :         30 : dwarf_getarange_addr (aranges, addr)
      39                 :            :      Dwarf_Aranges *aranges;
      40                 :            :      Dwarf_Addr addr;
      41                 :            : {
      42         [ +  - ]:         30 :   if (aranges == NULL)
      43                 :            :     return NULL;
      44                 :            : 
      45                 :            :   /* The ranges are sorted by address, so we can use binary search.  */
      46                 :         30 :   size_t l = 0, u = aranges->naranges;
      47         [ +  + ]:         78 :   while (l < u)
      48                 :            :     {
      49                 :         57 :       size_t idx = (l + u) / 2;
      50         [ +  + ]:         57 :       if (addr < aranges->info[idx].addr)
      51                 :            :         u = idx;
      52         [ +  + ]:         18 :       else if (addr > aranges->info[idx].addr
      53         [ +  + ]:         15 :                && addr - aranges->info[idx].addr >= aranges->info[idx].length)
      54                 :          9 :         l = idx + 1;
      55                 :            :       else
      56                 :         57 :         return &aranges->info[idx];
      57                 :            :     }
      58                 :            : 
      59                 :         21 :   __libdw_seterrno (DWARF_E_NO_MATCH);
      60                 :         30 :   return NULL;
      61                 :            : }
      62                 :            : INTDEF(dwarf_getarange_addr)