1 /* int.c --- M32C interrupt handling.
3 Copyright (C) 2005-2016 Free Software Foundation, Inc.
4 Contributed by Red Hat, Inc.
6 This file is part of the GNU simulators.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 trigger_interrupt (int addr, int clear_u)
30 int f = get_reg (flags);
34 set_flags (FLAGBIT_U, 0);
35 set_flags (FLAGBIT_I | FLAGBIT_D, 0);
42 mem_put_qi (s + 2, f);
43 mem_put_qi (s + 3, ((f >> 4) & 0x0f) | (p >> 16));
50 mem_put_hi (s + 4, f);
52 put_reg (pc, mem_get_psi (addr));
56 trigger_fixed_interrupt (int addr)
58 trigger_interrupt (addr, 1);
62 trigger_based_interrupt (int vector)
64 int addr = get_reg (intb) + vector * 4;
65 trigger_interrupt (addr, vector <= 31);
69 trigger_peripheral_interrupt (int vector, int icaddr)
71 unsigned char old_ic = mem_get_qi (icaddr);
72 int addr = get_reg (intb) + vector * 4;
73 trigger_interrupt (addr, 1);
74 put_reg (flags, (get_reg (flags) & 0x8fff) | ((old_ic & 7) << 12));
75 mem_put_qi (icaddr, old_ic & ~ 0x08);