LCOV - code coverage report
Current view: top level - libdw - dwarf_getarange_addr.c (source / functions) Hit Total Coverage
Test: elfutils-0.172 Lines: 12 12 100.0 %
Date: 2018-06-11 22:52:14 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       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          46 : dwarf_getarange_addr (Dwarf_Aranges *aranges, Dwarf_Addr addr)
      39             : {
      40          46 :   if (aranges == NULL)
      41             :     return NULL;
      42             : 
      43             :   /* The ranges are sorted by address, so we can use binary search.  */
      44          46 :   size_t l = 0, u = aranges->naranges;
      45         141 :   while (l < u)
      46             :     {
      47          74 :       size_t idx = (l + u) / 2;
      48          74 :       if (addr < aranges->info[idx].addr)
      49             :         u = idx;
      50          35 :       else if (addr > aranges->info[idx].addr
      51          28 :                && addr - aranges->info[idx].addr >= aranges->info[idx].length)
      52          10 :         l = idx + 1;
      53             :       else
      54          25 :         return &aranges->info[idx];
      55             :     }
      56             : 
      57          21 :   __libdw_seterrno (DWARF_E_NO_MATCH);
      58          21 :   return NULL;
      59             : }
      60             : INTDEF(dwarf_getarange_addr)

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