1 files changed, 107 insertions, 0 deletions
diff --git a/tools/ioemu/iodev/extfpuirq.cc b/tools/ioemu/iodev/extfpuirq.cc
new file mode 100644
index 0000000000..5d1ed986bf
--- /dev/null
+++ b/tools/ioemu/iodev/extfpuirq.cc
@@ -0,0 +1,107 @@
+/////////////////////////////////////////////////////////////////////////
+// $Id: extfpuirq.cc,v 1.5 2003/07/31 12:04:48 vruppert Exp $
+/////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2002  MandrakeSoft S.A.
+//
+//    MandrakeSoft S.A.
+//    43, rue d'Aboukir
+//    75002 Paris - France
+//    http://www.linux-mandrake.com/
+//    http://www.mandrakesoft.com/
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+
+//
+// External circuit for MSDOS compatible FPU exceptions
+//
+
+// Define BX_PLUGGABLE in files that can be compiled into plugins.  For
+// platforms that require a special tag on exported symbols, BX_PLUGGABLE 
+// is used to know when we are exporting symbols and when we are importing.
+#define BX_PLUGGABLE
+
+#include "bochs.h"
+
+#define LOG_THIS theExternalFpuIrq->
+
+bx_extfpuirq_c *theExternalFpuIrq = NULL;
+
+  int
+libextfpuirq_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
+{
+  theExternalFpuIrq = new bx_extfpuirq_c ();
+  bx_devices.pluginExtFpuIrq = theExternalFpuIrq;
+  BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theExternalFpuIrq, BX_PLUGIN_EXTFPUIRQ);
+  return(0); // Success
+}
+
+  void
+libextfpuirq_LTX_plugin_fini(void)
+{
+}
+
+bx_extfpuirq_c::bx_extfpuirq_c(void)
+{
+  put("EFIRQ");
+  settype(EXTFPUIRQLOG);
+}
+
+bx_extfpuirq_c::~bx_extfpuirq_c(void)
+{
+  // nothing for now
+  BX_DEBUG(("Exit."));
+}
+
+
+  void
+bx_extfpuirq_c::init(void)
+{
+  // called once when bochs initializes
+  DEV_register_iowrite_handler(this, write_handler, 0x00F0, "External FPU IRQ", 1);
+  DEV_register_irq(13, "External FPU IRQ");
+}
+
+  void
+bx_extfpuirq_c::reset(unsigned type)
+{
+  // We should handle IGNNE here
+  DEV_pic_lower_irq(13);
+}
+
+
+  // static IO port write callback handler
+  // redirects to non-static class handler to avoid virtual functions
+
+  void
+bx_extfpuirq_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
+{
+#if !BX_USE_EFI_SMF
+  bx_extfpuirq_c *class_ptr = (bx_extfpuirq_c *) this_ptr;
+
+  class_ptr->write(address, value, io_len);
+}
+
+  void
+bx_extfpuirq_c::write(Bit32u address, Bit32u value, unsigned io_len)
+{
+#else
+  UNUSED(this_ptr);
+#endif // !BX_USE_EFI_SMF
+
+  // We should handle IGNNE here
+  DEV_pic_lower_irq(13);
+}
+