/* libunwind - a platform-independent unwind library

   Copyright (C) 2002-2005 Hewlett-Packard Co

        Contributed by David Mosberger-Tang <davidm@hpl.hp.com>

This file is part of libunwind.

Permission is hereby granted, free of charge, to any person obtaining

a copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sublicense, and/or sell copies of the Software, and to

permit persons to whom the Software is furnished to do so, subject to

the following conditions:

The above copyright notice and this permission notice shall be

included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */

#include "libunwind_i.h"

#include <stdatomic.h>

void

unw_flush_cache (unw_addr_space_t as, unw_word_t lo UNUSED, unw_word_t hi UNUSED)

{

#if !UNW_TARGET_IA64

  struct unw_debug_frame_list *w = as->debug_frames;

  while (w)

    {

      struct unw_debug_frame_list *n = w->next;

      if (w->index)

        mi_munmap (w->index, w->index_size);

      mi_munmap (w->debug_frame, w->debug_frame_size);

      mi_munmap (w, sizeof (*w));

      w = n;

    }

  as->debug_frames = NULL;

#endif

  /* clear dyn_info_list_addr cache: */

  as->dyn_info_list_addr = 0;

  /* This lets us flush caches lazily.  The implementation currently

     ignores the flush range arguments (lo-hi).  This is OK because

     unw_flush_cache() is allowed to flush more than the requested

     range. */

  atomic_fetch_add (&as->cache_generation, 1);

}