2 * Copyright © 2016 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
18 ao_lisp_save(struct ao_lisp_cons *cons)
21 struct ao_lisp_os_save *os = (struct ao_lisp_os_save *) &ao_lisp_pool[AO_LISP_POOL];
24 os->ao_lisp_atoms = ao_lisp_atom_poly(ao_lisp_atoms);
25 os->ao_lisp_globals = ao_lisp_frame_poly(ao_lisp_frame_global);
26 if (ao_lisp_os_save())
27 return _ao_lisp_atom_t;
33 ao_lisp_restore(struct ao_lisp_cons *cons)
36 struct ao_lisp_os_save *os = (struct ao_lisp_os_save *) &ao_lisp_pool[AO_LISP_POOL];
38 if (ao_lisp_os_restore()) {
40 ao_lisp_atoms = ao_lisp_poly_atom(os->ao_lisp_atoms);
41 ao_lisp_frame_global = ao_lisp_poly_frame(os->ao_lisp_globals);
43 /* Clear the eval global variabls */
44 ao_lisp_eval_clear_globals();
46 /* Reset the allocator */
47 ao_lisp_top = AO_LISP_POOL;
50 /* Re-create the evaluator stack */
51 if (!ao_lisp_eval_restart())
53 return _ao_lisp_atom_t;