1 /* int.c --- M32C interrupt handling.
3 Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
4 Free Software Foundation, Inc.
5 Contributed by Red Hat, Inc.
7 This file is part of the GNU simulators.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 trigger_interrupt (int addr, int clear_u)
31 int f = get_reg (flags);
35 set_flags (FLAGBIT_U, 0);
36 set_flags (FLAGBIT_I | FLAGBIT_D, 0);
43 mem_put_qi (s + 2, f);
44 mem_put_qi (s + 3, ((f >> 4) & 0x0f) | (p >> 16));
51 mem_put_hi (s + 4, f);
53 put_reg (pc, mem_get_psi (addr));
57 trigger_fixed_interrupt (int addr)
59 trigger_interrupt (addr, 1);
63 trigger_based_interrupt (int vector)
65 int addr = get_reg (intb) + vector * 4;
66 trigger_interrupt (addr, vector <= 31);
70 trigger_peripheral_interrupt (int vector, int icaddr)
72 unsigned char old_ic = mem_get_qi (icaddr);
73 int addr = get_reg (intb) + vector * 4;
74 trigger_interrupt (addr, 1);
75 put_reg (flags, (get_reg (flags) & 0x8fff) | ((old_ic & 7) << 12));
76 mem_put_qi (icaddr, old_ic & ~ 0x08);