LCOV - code coverage report
Current view: top level - libelf - elf_nextscn.c (source / functions) Hit Total Coverage
Test: elfutils-0.175 Lines: 12 12 100.0 %
Date: 2018-11-16 13:02:39 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* Get next section.
       2             :    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2015 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Contributed by Ulrich Drepper <drepper@redhat.com>, 1998.
       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 <libelf.h>
      36             : #include <stddef.h>
      37             : 
      38             : #include "libelfP.h"
      39             : 
      40             : 
      41             : Elf_Scn *
      42     8522065 : elf_nextscn (Elf *elf, Elf_Scn *scn)
      43             : {
      44             :   Elf_ScnList *list;
      45     8522065 :   Elf_Scn *result = NULL;
      46             : 
      47     8522065 :   if (elf == NULL)
      48             :     return NULL;
      49             : 
      50             :   rwlock_rdlock (elf->lock);
      51             : 
      52     8522065 :   if (scn == NULL)
      53             :     {
      54             :       /* If no section handle is given return the first (not 0th) section.
      55             :          Set scn to the 0th section and perform nextscn.  */
      56             :       if (elf->class == ELFCLASS32
      57             :            || (offsetof (Elf, state.elf32.scns)
      58             :                == offsetof (Elf, state.elf64.scns)))
      59     1135303 :         list = &elf->state.elf32.scns;
      60             :       else
      61             :         list = &elf->state.elf64.scns;
      62             : 
      63     1135303 :       scn = &list->data[0];
      64             :     }
      65             :   else
      66     7386762 :     list = scn->list;
      67             : 
      68     8522065 :   if (scn + 1 < &list->data[list->cnt])
      69             :     result = scn + 1;
      70        9199 :   else if (scn + 1 == &list->data[list->max]
      71        8932 :            && (list = list->next) != NULL)
      72             :     {
      73             :       /* If there is another element in the section list it must
      74             :          have at least one entry.  */
      75         289 :       assert (list->cnt > 0);
      76         289 :       result = &list->data[0];
      77             :     }
      78             : 
      79             :   rwlock_unlock (elf->lock);
      80             : 
      81             :   return result;
      82             : }
      83             : INTDEF(elf_nextscn)

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