Line data    Source code

       1             : /* Get CFI from DWARF file.
       2             :    Copyright (C) 2009 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 "libdwP.h"
      34             : #include "cfi.h"
      35             : #include <dwarf.h>
      36             : 
      37             : Dwarf_CFI *
      38          43 : dwarf_getcfi (Dwarf *dbg)
      39             : {
      40          43 :   if (dbg == NULL)
      41             :     return NULL;
      42             : 
      43          19 :   if (dbg->cfi == NULL && dbg->sectiondata[IDX_debug_frame] != NULL)
      44             :     {
      45           9 :       Dwarf_CFI *cfi = libdw_typed_alloc (dbg, Dwarf_CFI);
      46             : 
      47           9 :       cfi->dbg = dbg;
      48           9 :       cfi->data = (Elf_Data_Scn *) dbg->sectiondata[IDX_debug_frame];
      49             : 
      50           9 :       cfi->search_table = NULL;
      51           9 :       cfi->search_table_vaddr = 0;
      52           9 :       cfi->search_table_entries = 0;
      53           9 :       cfi->search_table_encoding = DW_EH_PE_omit;
      54             : 
      55           9 :       cfi->frame_vaddr = 0;
      56           9 :       cfi->textrel = 0;
      57           9 :       cfi->datarel = 0;
      58             : 
      59           9 :       cfi->e_ident = (unsigned char *) elf_getident (dbg->elf, NULL);
      60           9 :       cfi->other_byte_order = dbg->other_byte_order;
      61             : 
      62           9 :       cfi->next_offset = 0;
      63           9 :       cfi->cie_tree = cfi->fde_tree = cfi->expr_tree = NULL;
      64             : 
      65           9 :       cfi->ebl = NULL;
      66             : 
      67           9 :       dbg->cfi = cfi;
      68             :     }
      69             : 
      70          19 :   return dbg->cfi;
      71             : }
      72             : INTDEF (dwarf_getcfi)