dwfl_nextcu.c

/* Iterate through DWARF compilation units across all modules.
   Copyright (C) 2005 Red Hat, Inc.
   This file is part of Red Hat elfutils.

   Red Hat elfutils is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by the
   Free Software Foundation; version 2 of the License.

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   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with Red Hat elfutils; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.

   In addition, as a special exception, Red Hat, Inc. gives You the
   additional right to link the code of Red Hat elfutils with code licensed
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   Red Hat elfutils is an included package of the Open Invention Network.
   An included package of the Open Invention Network is a package for which
   Open Invention Network licensees cross-license their patents.  No patent
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#include "libdwflP.h"

Dwarf_Die *
dwfl_nextcu (Dwfl *dwfl, Dwarf_Die *lastcu, Dwarf_Addr *bias)
{
  if (dwfl == NULL)
    return NULL;

  struct dwfl_cu *cu = (struct dwfl_cu *) lastcu;
  Dwfl_Module *mod;

  if (cu == NULL)
    {
      mod = dwfl->modulelist;
      goto nextmod;
    }
  else
    mod = cu->mod;

  Dwfl_Error error;
  do
    {
      error = __libdwfl_nextcu (mod, cu, &cu);
      if (error != DWFL_E_NOERROR)
	break;

      if (cu != NULL)
	{
	  *bias = mod->debug.bias;
	  return &cu->die;
	}

      do
	{
	  mod = mod->next;

	nextmod:
	  if (mod == NULL)
	    return NULL;

	  if (mod->dwerr == DWFL_E_NOERROR
	      && (mod->dw != NULL
		  || INTUSE(dwfl_module_getdwarf) (mod, bias) != NULL))
	    break;
	}
      while (mod->dwerr == DWFL_E_NO_DWARF);
      error = mod->dwerr;
    }
  while (error == DWFL_E_NOERROR);

  __libdwfl_seterrno (error);
  return NULL;
}
INTDEF (dwfl_nextcu)