libdwarf/dwarf_global_name_offsets.c

/* Return name, DIE offset, and offset of the compile unit for global
   definition.
   Copyright (C) 2000, 2002 Red Hat, Inc.
   Written by Ulrich Drepper <drepper@redhat.com>, 2000.

   This program is Open Source software; you can redistribute it and/or
   modify it under the terms of the Open Software License version 1.0 as
   published by the Open Source Initiative.

   You should have received a copy of the Open Software License along
   with this program; if not, you may obtain a copy of the Open Software
   License version 1.0 from http://www.opensource.org/licenses/osl.php or
   by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
   3001 King Ranch Road, Ukiah, CA 95482.   */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <string.h>

#include <libdwarfP.h>


int
dwarf_global_name_offsets (global, return_name, die_offset, cu_offset, error)
     Dwarf_Global global;
     char **return_name;
     Dwarf_Off *die_offset;
     Dwarf_Off *cu_offset;
     Dwarf_Error *error;
{
  if (return_name != NULL)
    {
      *return_name = strdup (global->name);
      if (*return_name == NULL)
	{
	  __libdwarf_error (global->info->dbg, error, DW_E_NOMEM);
	  return DW_DLV_ERROR;
	}
    }

  if (die_offset != NULL)
    *die_offset = global->offset + global->info->offset;

  /* Determine the size of the CU header.  */
  if (cu_offset != NULL)
    {
      Dwarf_Small *cu_header;
      unsigned int offset_size;

      cu_header =
	((Dwarf_Small *) global->info->dbg->sections[IDX_debug_info].addr
	 + global->info->offset);
      if (read_4ubyte_unaligned_noncvt (cu_header) == 0xffffffff)
	offset_size = 8;
      else
	offset_size = 4;

      *cu_offset = global->info->offset + 3 * offset_size - 4 + 3;
    }

  return DW_DLV_OK;
}