91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2002-2014 The Bochs Project
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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// External circuit for MSDOS compatible FPU exceptions
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//
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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#include "iodev.h"
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#include "extfpuirq.h"
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#define LOG_THIS theExternalFpuIrq->
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bx_extfpuirq_c *theExternalFpuIrq = NULL;
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int CDECL libextfpuirq_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
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{
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theExternalFpuIrq = new bx_extfpuirq_c();
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BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theExternalFpuIrq, BX_PLUGIN_EXTFPUIRQ);
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return(0); // Success
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}
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void CDECL libextfpuirq_LTX_plugin_fini(void)
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{
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delete theExternalFpuIrq;
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}
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bx_extfpuirq_c::bx_extfpuirq_c(void)
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{
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put("extfpuirq", "EXFIRQ");
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}
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bx_extfpuirq_c::~bx_extfpuirq_c(void)
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{
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BX_DEBUG(("Exit"));
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}
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void bx_extfpuirq_c::init(void)
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{
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// called once when bochs initializes
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DEV_register_iowrite_handler(this, write_handler, 0x00F0, "External FPU IRQ", 1);
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DEV_register_irq(13, "External FPU IRQ");
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}
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void bx_extfpuirq_c::reset(unsigned type)
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{
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// We should handle IGNNE here
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DEV_pic_lower_irq(13);
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}
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// static IO port write callback handler
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// redirects to non-static class handler to avoid virtual functions
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void bx_extfpuirq_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
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{
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#if !BX_USE_EFI_SMF
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bx_extfpuirq_c *class_ptr = (bx_extfpuirq_c *) this_ptr;
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class_ptr->write(address, value, io_len);
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}
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void bx_extfpuirq_c::write(Bit32u address, Bit32u value, unsigned io_len)
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{
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#else
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UNUSED(this_ptr);
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#endif // !BX_USE_EFI_SMF
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// We should handle IGNNE here
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DEV_pic_lower_irq(13);
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}
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