445 lines
12 KiB
C++
445 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id: bit.cc,v 1.55 2008-04-03 17:56:55 sshwarts Exp $
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2001 MandrakeSoft S.A.
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//
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// MandrakeSoft S.A.
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// 43, rue d'Aboukir
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// 75002 Paris - France
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// http://www.linux-mandrake.com/
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// http://www.mandrakesoft.com/
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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/////////////////////////////////////////////////////////////////////////
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#define NEED_CPU_REG_SHORTCUTS 1
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#include "bochs.h"
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#include "cpu.h"
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#define LOG_THIS BX_CPU_THIS_PTR
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#if BX_CPU_LEVEL >= 3
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETO_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = getB_OF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETO_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_OF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNO_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !getB_OF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNO_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_OF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETB_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = getB_CF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETB_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_CF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNB_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !getB_CF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNB_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_CF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETZ_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = getB_ZF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETZ_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_ZF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNZ_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !getB_ZF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNZ_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_ZF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETBE_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = (getB_CF() | getB_ZF());
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETBE_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), (getB_CF() | getB_ZF()));
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNBE_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !(getB_CF() | getB_ZF());
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNBE_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !(getB_CF() | getB_ZF()));
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETS_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = getB_SF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETS_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_SF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNS_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !getB_SF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNS_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_SF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETP_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = getB_PF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETP_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_PF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNP_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !getB_PF();
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNP_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_PF());
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETL_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = (getB_SF() ^ getB_OF());
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETL_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), (getB_SF() ^ getB_OF()));
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNL_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !(getB_SF() ^ getB_OF());
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNL_EbR(bxInstruction_c *i)
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{
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !(getB_SF() ^ getB_OF()));
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETLE_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = getB_ZF() | (getB_SF() ^ getB_OF());
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETLE_EbR(bxInstruction_c *i)
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{
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Bit8u result_8 = getB_ZF() | (getB_SF() ^ getB_OF());
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNLE_EbM(bxInstruction_c *i)
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{
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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Bit8u result_8 = !(getB_ZF() | (getB_SF() ^ getB_OF()));
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write_virtual_byte(i->seg(), RMAddr(i), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNLE_EbR(bxInstruction_c *i)
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{
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Bit8u result_8 = !(getB_ZF() | (getB_SF() ^ getB_OF()));
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BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), result_8);
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::BSWAP_ERX(bxInstruction_c *i)
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{
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#if BX_CPU_LEVEL >= 4
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Bit32u val32, b0, b1, b2, b3;
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if (i->os32L() == 0) {
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BX_ERROR(("BSWAP with 16-bit opsize: undefined behavior !"));
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}
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val32 = BX_READ_32BIT_REG(i->opcodeReg());
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b0 = val32 & 0xff; val32 >>= 8;
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b1 = val32 & 0xff; val32 >>= 8;
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b2 = val32 & 0xff; val32 >>= 8;
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b3 = val32;
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val32 = (b0<<24) | (b1<<16) | (b2<<8) | b3; // zero extended
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// in 64-bit mode, hi-order 32 bits are not modified
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BX_WRITE_32BIT_REGZ(i->opcodeReg(), val32);
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#else
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BX_INFO(("BSWAP_ERX: required CPU >= 4, use --enable-cpu-level=4 option"));
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UndefinedOpcode(i);
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#endif
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}
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#if BX_SUPPORT_X86_64
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::BSWAP_RRX(bxInstruction_c *i)
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{
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Bit64u val64, b0, b1, b2, b3, b4, b5, b6, b7;
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val64 = BX_READ_64BIT_REG(i->opcodeReg());
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b0 = val64 & 0xff; val64 >>= 8;
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b1 = val64 & 0xff; val64 >>= 8;
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b2 = val64 & 0xff; val64 >>= 8;
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b3 = val64 & 0xff; val64 >>= 8;
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b4 = val64 & 0xff; val64 >>= 8;
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b5 = val64 & 0xff; val64 >>= 8;
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b6 = val64 & 0xff; val64 >>= 8;
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b7 = val64;
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val64 = (b0<<56) | (b1<<48) | (b2<<40) | (b3<<32) | (b4<<24) | (b4<<16) | (b4<<8) | b7;
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BX_WRITE_64BIT_REG(i->opcodeReg(), val64);
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}
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#endif
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// 3-byte opcodes
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#if (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
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#define CRC32_POLYNOMIAL BX_CONST64(0x11edc6f41)
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#if (BX_SUPPORT_SSE >= 5) || (BX_SUPPORT_SSE >= 4 && BX_SUPPORT_SSE_EXTENSION > 0)
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// primitives for CRC32 usage
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BX_CPP_INLINE Bit8u BitReflect8(Bit8u val8)
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{
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return ((val8 & 0x80) >> 7) |
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((val8 & 0x40) >> 5) |
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((val8 & 0x20) >> 3) |
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((val8 & 0x10) >> 1) |
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((val8 & 0x08) << 1) |
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((val8 & 0x04) << 3) |
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((val8 & 0x02) << 5) |
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((val8 & 0x01) << 7);
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}
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BX_CPP_INLINE Bit16u BitReflect16(Bit16u val16)
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{
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return ((Bit16u)(BitReflect8(val16 & 0xff)) << 8) | BitReflect8(val16 >> 8);
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}
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BX_CPP_INLINE Bit32u BitReflect32(Bit32u val32)
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{
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return ((Bit32u)(BitReflect16(val32 & 0xffff)) << 16) | BitReflect16(val32 >> 16);
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}
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static Bit32u mod2_64bit(Bit64u divisor, Bit64u dividend)
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{
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Bit64u remainder = dividend >> 32;
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for (int bitpos=31; bitpos>=0; bitpos--) {
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// copy one more bit from the dividend
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remainder = (remainder << 1) | ((dividend >> bitpos) & 1);
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// if MSB is set, then XOR divisor and get new remainder
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if (((remainder >> 32) & 1) == 1) {
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remainder ^= divisor;
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}
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}
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return remainder;
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}
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#endif // (BX_SUPPORT_SSE >= 5) || (BX_SUPPORT_SSE >= 4 && BX_SUPPORT_SSE_EXTENSION > 0)
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::CRC32_GdEb(bxInstruction_c *i)
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{
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#if (BX_SUPPORT_SSE >= 5) || (BX_SUPPORT_SSE >= 4 && BX_SUPPORT_SSE_EXTENSION > 0)
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Bit8u op1;
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if (i->modC0()) {
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op1 = BX_READ_8BIT_REGx(i->rm(),i->extend8bitL());
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}
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else {
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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op1 = read_virtual_byte(i->seg(), RMAddr(i));
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}
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Bit32u op2 = BX_READ_32BIT_REG(i->nnn());
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op2 = BitReflect32(op2);
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Bit64u tmp1 = ((Bit64u) BitReflect8 (op1)) << 32;
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Bit64u tmp2 = ((Bit64u) op2) << 8;
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Bit64u tmp3 = tmp1 ^ tmp2;
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op2 = mod2_64bit(CRC32_POLYNOMIAL, tmp3);
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/* now write result back to destination */
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BX_WRITE_32BIT_REGZ(i->nnn(), BitReflect32(op2));
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#else
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BX_INFO(("CRC32_GdEb: required SSE4_2 support, use --enable-sse and --enable-sse-extension options"));
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UndefinedOpcode(i);
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#endif
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}
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void BX_CPP_AttrRegparmN(1) BX_CPU_C::CRC32_GdEv(bxInstruction_c *i)
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{
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#if (BX_SUPPORT_SSE >= 5) || (BX_SUPPORT_SSE >= 4 && BX_SUPPORT_SSE_EXTENSION > 0)
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Bit32u op2 = BX_READ_32BIT_REG(i->nnn());
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op2 = BitReflect32(op2);
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#if BX_SUPPORT_X86_64
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if (i->os64L()) /* 64 bit operand size */
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{
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Bit64u op1;
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if (i->modC0()) {
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op1 = BX_READ_64BIT_REG(i->rm());
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}
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else {
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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op1 = read_virtual_qword(i->seg(), RMAddr(i));
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}
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Bit64u tmp1 = ((Bit64u) BitReflect32(op1 & 0xffffffff)) << 32;
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Bit64u tmp2 = ((Bit64u) op2) << 32;
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Bit64u tmp3 = tmp1 ^ tmp2;
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op2 = mod2_64bit(CRC32_POLYNOMIAL, tmp3);
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tmp1 = ((Bit64u) BitReflect32(op1 >> 32)) << 32;
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tmp2 = ((Bit64u) op2) << 32;
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tmp3 = tmp1 ^ tmp2;
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op2 = mod2_64bit(CRC32_POLYNOMIAL, tmp3);
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}
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else
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#endif
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{
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if (i->os32L()) /* 32 bit operand size */
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{
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Bit32u op1;
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if (i->modC0()) {
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op1 = BX_READ_32BIT_REG(i->rm());
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}
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else {
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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op1 = read_virtual_dword(i->seg(), RMAddr(i));
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}
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Bit64u tmp1 = ((Bit64u) BitReflect32(op1)) << 32;
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Bit64u tmp2 = ((Bit64u) op2) << 32;
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Bit64u tmp3 = tmp1 ^ tmp2;
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op2 = mod2_64bit(CRC32_POLYNOMIAL, tmp3);
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}
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else { /* 16 bit operand size */
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Bit16u op1;
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if (i->modC0()) {
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op1 = BX_READ_16BIT_REG(i->rm());
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}
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else {
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BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
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op1 = read_virtual_word(i->seg(), RMAddr(i));
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}
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Bit64u tmp1 = ((Bit64u) BitReflect16(op1)) << 32;
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Bit64u tmp2 = ((Bit64u) op2) << 16;
|
|
Bit64u tmp3 = tmp1 ^ tmp2;
|
|
op2 = mod2_64bit(CRC32_POLYNOMIAL, tmp3);
|
|
}
|
|
}
|
|
|
|
/* now write result back to destination */
|
|
BX_WRITE_32BIT_REGZ(i->nnn(), BitReflect32(op2));
|
|
|
|
#else
|
|
BX_INFO(("CRC32_GdEv: required SSE4_2 support, use --enable-sse and --enable-sse-extension options"));
|
|
UndefinedOpcode(i);
|
|
#endif
|
|
}
|
|
|
|
#endif // (BX_SUPPORT_SSE >= 4) || (BX_SUPPORT_SSE >= 3 && BX_SUPPORT_SSE_EXTENSION > 0)
|
|
|
|
#endif // (BX_CPU_LEVEL >= 3)
|