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Bochs/bochs/cpu/bit.cc
Stanislav Shwartsman 002c86660a reword all the CPU code in preparation for future CPU speedup implementation. 
Bochs emulation can be another 10-15% faster using technique described in paper
"Fast Microcode Interpretation with Transactional Commit/Abort"
http://amas-bt.cs.virginia.edu/2011proceedings/amasbt2011-p3.pdf
2011-07-06 20:01:18 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001-2011 The Bochs Project
//
// 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., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
/////////////////////////////////////////////////////////////////////////
#define NEED_CPU_REG_SHORTCUTS 1
#include "bochs.h"
#include "cpu.h"
#define LOG_THIS BX_CPU_THIS_PTR
#if BX_CPU_LEVEL >= 3
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETO_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = getB_OF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETO_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_OF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNO_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !getB_OF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNO_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_OF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETB_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = getB_CF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETB_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_CF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNB_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !getB_CF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNB_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_CF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETZ_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = getB_ZF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETZ_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_ZF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNZ_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !getB_ZF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNZ_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_ZF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETBE_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = (getB_CF() | getB_ZF());
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETBE_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), (getB_CF() | getB_ZF()));
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNBE_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !(getB_CF() | getB_ZF());
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNBE_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !(getB_CF() | getB_ZF()));
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETS_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = getB_SF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETS_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_SF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNS_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !getB_SF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNS_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_SF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETP_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = getB_PF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETP_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), getB_PF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNP_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !getB_PF();
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNP_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !getB_PF());
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETL_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = (getB_SF() ^ getB_OF());
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETL_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), (getB_SF() ^ getB_OF()));
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNL_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !(getB_SF() ^ getB_OF());
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNL_EbR(bxInstruction_c *i)
{
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), !(getB_SF() ^ getB_OF()));
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETLE_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = getB_ZF() | (getB_SF() ^ getB_OF());
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETLE_EbR(bxInstruction_c *i)
{
Bit8u result_8 = getB_ZF() | (getB_SF() ^ getB_OF());
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNLE_EbM(bxInstruction_c *i)
{
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
Bit8u result_8 = !(getB_ZF() | (getB_SF() ^ getB_OF()));
write_virtual_byte(i->seg(), eaddr, result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::SETNLE_EbR(bxInstruction_c *i)
{
Bit8u result_8 = !(getB_ZF() | (getB_SF() ^ getB_OF()));
BX_WRITE_8BIT_REGx(i->rm(), i->extend8bitL(), result_8);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::BSWAP_RX(bxInstruction_c *i)
{
BX_ERROR(("BSWAP with 16-bit opsize: undefined behavior !"));
BX_WRITE_16BIT_REG(i->rm(), 0);
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::BSWAP_ERX(bxInstruction_c *i)
{
Bit32u val32 = BX_READ_32BIT_REG(i->rm());
BX_WRITE_32BIT_REGZ(i->rm(), bx_bswap32(val32));
BX_NEXT_INSTR(i);
}
#if BX_SUPPORT_X86_64
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::BSWAP_RRX(bxInstruction_c *i)
{
Bit64u val64 = BX_READ_64BIT_REG(i->rm());
BX_WRITE_64BIT_REG(i->rm(), bx_bswap64(val64));
BX_NEXT_INSTR(i);
}
#endif
#if BX_CPU_LEVEL >= 6
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVBE_GwEwR(bxInstruction_c *i)
{
Bit16u val16 = BX_READ_16BIT_REG(i->rm());
BX_WRITE_16BIT_REG(i->nnn(), bx_bswap16(val16));
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVBE_EwGw(bxInstruction_c *i)
{
Bit16u val16 = BX_READ_16BIT_REG(i->nnn());
val16 = bx_bswap16(val16);
if (i->modC0()) {
BX_WRITE_16BIT_REG(i->rm(), val16);
}
else {
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
write_virtual_word(i->seg(), eaddr, val16);
}
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVBE_GdEdR(bxInstruction_c *i)
{
Bit32u val32 = BX_READ_32BIT_REG(i->rm());
BX_WRITE_32BIT_REGZ(i->nnn(), bx_bswap32(val32));
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVBE_EdGd(bxInstruction_c *i)
{
Bit32u val32 = BX_READ_32BIT_REG(i->nnn());
val32 = bx_bswap32(val32);
if (i->modC0()) {
BX_WRITE_32BIT_REGZ(i->rm(), val32);
}
else {
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
write_virtual_dword(i->seg(), eaddr, val32);
}
BX_NEXT_INSTR(i);
}
#if BX_SUPPORT_X86_64
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVBE_GqEqR(bxInstruction_c *i)
{
Bit64u val64 = BX_READ_64BIT_REG(i->rm());
BX_WRITE_64BIT_REG(i->nnn(), bx_bswap64(val64));
BX_NEXT_INSTR(i);
}
BX_INSF_TYPE BX_CPP_AttrRegparmN(1) BX_CPU_C::MOVBE_EqGq(bxInstruction_c *i)
{
Bit64u val64 = BX_READ_64BIT_REG(i->nnn());
val64 = bx_bswap64(val64);
if (i->modC0()) {
BX_WRITE_64BIT_REG(i->rm(), val64);
}
else {
bx_address eaddr = BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
write_virtual_qword_64(i->seg(), eaddr, val64);
}
BX_NEXT_INSTR(i);
}
#endif // BX_SUPPORT_X86_64
#endif // BX_CPU_LEVEL >= 6
#endif // BX_CPU_LEVEL >= 3
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