Line data    Source code

       1             : /* Find DWARF CFI for a module in libdwfl.
       2             :    Copyright (C) 2009-2010 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             : 
       5             :    This file is free software; you can redistribute it and/or modify
       6             :    it under the terms of either
       7             : 
       8             :      * the GNU Lesser General Public License as published by the Free
       9             :        Software Foundation; either version 3 of the License, or (at
      10             :        your option) any later version
      11             : 
      12             :    or
      13             : 
      14             :      * the GNU General Public License as published by the Free
      15             :        Software Foundation; either version 2 of the License, or (at
      16             :        your option) any later version
      17             : 
      18             :    or both in parallel, as here.
      19             : 
      20             :    elfutils is distributed in the hope that it will be useful, but
      21             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      22             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      23             :    General Public License for more details.
      24             : 
      25             :    You should have received copies of the GNU General Public License and
      26             :    the GNU Lesser General Public License along with this program.  If
      27             :    not, see <http://www.gnu.org/licenses/>.  */
      28             : 
      29             : #ifdef HAVE_CONFIG_H
      30             : # include <config.h>
      31             : #endif
      32             : 
      33             : #include "libdwflP.h"
      34             : #include "../libdw/cfi.h"
      35             : 
      36             : Dwarf_CFI *
      37             : internal_function
      38        2413 : __libdwfl_set_cfi (Dwfl_Module *mod, Dwarf_CFI **slot, Dwarf_CFI *cfi)
      39             : {
      40        2413 :   if (cfi != NULL && cfi->ebl == NULL)
      41             :     {
      42          96 :       Dwfl_Error error = __libdwfl_module_getebl (mod);
      43          96 :       if (error == DWFL_E_NOERROR)
      44          96 :         cfi->ebl = mod->ebl;
      45             :       else
      46             :         {
      47           0 :           if (slot == &mod->eh_cfi)
      48           0 :             INTUSE(dwarf_cfi_end) (cfi);
      49           0 :           __libdwfl_seterrno (error);
      50           0 :           return NULL;
      51             :         }
      52             :     }
      53             : 
      54        2413 :   return *slot = cfi;
      55             : }
      56             : 
      57             : Dwarf_CFI *
      58        2353 : dwfl_module_dwarf_cfi (Dwfl_Module *mod, Dwarf_Addr *bias)
      59             : {
      60        2353 :   if (mod == NULL)
      61             :     return NULL;
      62             : 
      63        2353 :   if (mod->dwarf_cfi != NULL)
      64             :     {
      65          32 :       *bias = dwfl_adjusted_dwarf_addr (mod, 0);
      66          32 :       return mod->dwarf_cfi;
      67             :     }
      68             : 
      69        2321 :   return __libdwfl_set_cfi (mod, &mod->dwarf_cfi,
      70             :                             INTUSE(dwarf_getcfi)
      71             :                             (INTUSE(dwfl_module_getdwarf) (mod, bias)));
      72             : }
      73             : INTDEF (dwfl_module_dwarf_cfi)