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/* int.c --- M32C interrupt handling.
Copyright (C) 2005, 2007 Free Software Foundation, Inc.
Contributed by Red Hat, Inc.
This file is part of the GNU simulators.
The GNU simulators are free software; you can redistribute them and/or
modify them 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.
The GNU simulators are distributed in the hope that they 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.
You should have received a copy of the GNU General Public License
along with the GNU simulators; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA */
#include "int.h"
#include "cpu.h"
#include "mem.h"
void
trigger_fixed_interrupt (int addr)
{
int s = get_reg (sp);
int f = get_reg (flags);
int p = get_reg (pc);
if (A16)
{
s -= 4;
put_reg (sp, s);
mem_put_hi (s, p);
mem_put_qi (s + 2, f);
mem_put_qi (s + 3, ((f >> 4) & 0x0f) | (p >> 16));
}
else
{
s -= 6;
put_reg (sp, s);
mem_put_si (s, p);
mem_put_hi (s + 4, f);
}
put_reg (pc, mem_get_psi (addr));
set_flags (FLAGBIT_U | FLAGBIT_I | FLAGBIT_D, 0);
}
void
trigger_based_interrupt (int vector)
{
int addr = get_reg (intb) + vector * 4;
if (vector <= 31)
set_flags (FLAGBIT_U, 0);
trigger_fixed_interrupt (addr);
}
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