Blame libdw/dwarf_getcfi.c

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/* Get CFI from DWARF file.
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   Copyright (C) 2009 Red Hat, Inc.
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   This file is part of elfutils.
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   This file is free software; you can redistribute it and/or modify
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   it under the terms of either
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     * the GNU Lesser General Public License as published by the Free
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       Software Foundation; either version 3 of the License, or (at
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       your option) any later version
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   or
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     * the GNU General Public License as published by the Free
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       Software Foundation; either version 2 of the License, or (at
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       your option) any later version
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   or both in parallel, as here.
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   elfutils is distributed in the hope that it will be useful, but
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   WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   General Public License for more details.
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   You should have received copies of the GNU General Public License and
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   the GNU Lesser General Public License along with this program.  If
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   not, see <http://www.gnu.org/licenses/>.  */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "libdwP.h"
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#include "cfi.h"
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#include <dwarf.h>
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Dwarf_CFI *
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dwarf_getcfi (Dwarf *dbg)
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{
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  if (dbg == NULL)
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    return NULL;
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  if (dbg->cfi == NULL && dbg->sectiondata[IDX_debug_frame] != NULL)
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    {
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      Dwarf_CFI *cfi = libdw_typed_alloc (dbg, Dwarf_CFI);
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      cfi->dbg = dbg;
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      cfi->data = (Elf_Data_Scn *) dbg->sectiondata[IDX_debug_frame];
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      cfi->search_table = NULL;
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      cfi->search_table_vaddr = 0;
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      cfi->search_table_entries = 0;
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      cfi->search_table_encoding = DW_EH_PE_omit;
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      cfi->frame_vaddr = 0;
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      cfi->textrel = 0;
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      cfi->datarel = 0;
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      cfi->e_ident = (unsigned char *) elf_getident (dbg->elf, NULL);
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      GElf_Ehdr ehdr;
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      gelf_getehdr (dbg->elf, &ehdr);
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      cfi->e_machine = ehdr.e_machine;
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      cfi->other_byte_order = dbg->other_byte_order;
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      cfi->default_same_value = false;
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      cfi->next_offset = 0;
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      cfi->cie_tree = cfi->fde_tree = cfi->expr_tree = NULL;
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      cfi->ebl = NULL;
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      dbg->cfi = cfi;
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    }
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  return dbg->cfi;
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}
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INTDEF (dwarf_getcfi)