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);
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