1 files changed, 61 insertions, 0 deletions
diff --git a/sim/m32c/int.c b/sim/m32c/int.c
new file mode 100644
index 0000000..8f03515
--- /dev/null
+++ b/sim/m32c/int.c
@@ -0,0 +1,61 @@
+/* int.c --- M32C interrupt handling.
+
+Copyright (C) 2005 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);
+}