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/////////////////////////////////////////////////////////////////////////
// $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);
}
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