2011-11-15 Pedro Alves <pedro@codesourcery.com>
Luis Machado <lgustavo@codesourcery.com>
* auxv.c: Include observer.h.
(auxv_inferior_data_cleanup): New.
(invalidate_auxv_cache_inf): New.
(invalidate_auxv_cache): New.
(get_auxv_inferior_data): New.
(auxv_inferior_data): New static global.
(auxv_info): New structure.
(target_auxv_search): Use get_auxv_inferior_data instead of
target_read_alloc and don't free cached buffers.
(fprint_target_auxv): Likewise
(_initialize_auxv): Register per-inferior auxv cache and register
observers to invalidate auxv cache when needed.