-/*
- * Copyright © 2016 Keith Packard <keithp@keithp.com>
- *
- * This program 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, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * 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.
- */
-
-#include <ao_lisp.h>
-
-ao_poly
-ao_lisp_do_save(struct ao_lisp_cons *cons)
-{
- if (!ao_lisp_check_argc(_ao_lisp_atom_save, cons, 0, 0))
- return AO_LISP_NIL;
-
-#ifdef AO_LISP_SAVE
- struct ao_lisp_os_save *os = (struct ao_lisp_os_save *) (void *) &ao_lisp_pool[AO_LISP_POOL];
-
- ao_lisp_collect(AO_LISP_COLLECT_FULL);
- os->atoms = ao_lisp_atom_poly(ao_lisp_atoms);
- os->globals = ao_lisp_frame_poly(ao_lisp_frame_global);
- os->const_checksum = ao_lisp_const_checksum;
- os->const_checksum_inv = (uint16_t) ~ao_lisp_const_checksum;
-
- if (ao_lisp_os_save())
- return _ao_lisp_bool_true;
-#endif
- return _ao_lisp_bool_false;
-}
-
-ao_poly
-ao_lisp_do_restore(struct ao_lisp_cons *cons)
-{
- if (!ao_lisp_check_argc(_ao_lisp_atom_save, cons, 0, 0))
- return AO_LISP_NIL;
-
-#ifdef AO_LISP_SAVE
- struct ao_lisp_os_save save;
- struct ao_lisp_os_save *os = (struct ao_lisp_os_save *) (void *) &ao_lisp_pool[AO_LISP_POOL];
-
- if (!ao_lisp_os_restore_save(&save, AO_LISP_POOL))
- return ao_lisp_error(AO_LISP_INVALID, "header restore failed");
-
- if (save.const_checksum != ao_lisp_const_checksum ||
- save.const_checksum_inv != (uint16_t) ~ao_lisp_const_checksum)
- {
- return ao_lisp_error(AO_LISP_INVALID, "image is corrupted or stale");
- }
-
- if (ao_lisp_os_restore()) {
-
- ao_lisp_atoms = ao_lisp_poly_atom(os->atoms);
- ao_lisp_frame_global = ao_lisp_poly_frame(os->globals);
-
- /* Clear the eval global variabls */
- ao_lisp_eval_clear_globals();
-
- /* Reset the allocator */
- ao_lisp_top = AO_LISP_POOL;
- ao_lisp_collect(AO_LISP_COLLECT_FULL);
-
- /* Re-create the evaluator stack */
- if (!ao_lisp_eval_restart())
- return _ao_lisp_bool_false;
-
- return _ao_lisp_bool_true;
- }
-#endif
- return _ao_lisp_bool_false;
-}