ec1ff39a5f
The 64-bit code got >10% speedup, the 32-bit code also got about 2% because laddr cacluation optimization
569 lines
14 KiB
C++
569 lines
14 KiB
C++
/////////////////////////////////////////////////////////////////////////
|
|
// $Id: shift64.cc,v 1.37 2008-05-10 18:10:53 sshwarts Exp $
|
|
/////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (C) 2001 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
|
|
/////////////////////////////////////////////////////////////////////////
|
|
|
|
#define NEED_CPU_REG_SHORTCUTS 1
|
|
#include "bochs.h"
|
|
#include "cpu.h"
|
|
#define LOG_THIS BX_CPU_THIS_PTR
|
|
|
|
#if BX_SUPPORT_X86_64
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHLD_EqGqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, op2_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xa4) // 0x1a4
|
|
count = i->Ib();
|
|
else // 0x1a5
|
|
count = CL;
|
|
|
|
count &= 0x3f; // use only 6 LSB's
|
|
if (!count) return;
|
|
|
|
op2_64 = BX_READ_64BIT_REG(i->nnn());
|
|
|
|
result_64 = (op1_64 << count) | (op2_64 >> (64 - count));
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
|
|
cf = (op1_64 >> (64 - count)) & 0x1;
|
|
of = cf ^ (result_64 >> 63); // of = cf ^ result63
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHLD_EqGqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, op2_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
if (i->b1() == 0xa4) // 0x1a4
|
|
count = i->Ib();
|
|
else // 0x1a5
|
|
count = CL;
|
|
|
|
count &= 0x3f; // use only 6 LSB's
|
|
if (!count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
op2_64 = BX_READ_64BIT_REG(i->nnn());
|
|
|
|
result_64 = (op1_64 << count) | (op2_64 >> (64 - count));
|
|
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
|
|
cf = (op1_64 >> (64 - count)) & 0x1;
|
|
of = cf ^ (result_64 >> 63); // of = cf ^ result63
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHRD_EqGqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, op2_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xac) // 0x1ac
|
|
count = i->Ib();
|
|
else // 0x1ad
|
|
count = CL;
|
|
|
|
count &= 0x3f; // use only 6 LSB's
|
|
if (!count) return;
|
|
|
|
op2_64 = BX_READ_64BIT_REG(i->nnn());
|
|
|
|
result_64 = (op2_64 << (64 - count)) | (op1_64 >> count);
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
|
|
cf = (op1_64 >> (count - 1)) & 0x1;
|
|
of = ((result_64 << 1) ^ result_64) >> 63; // of = result62 ^ result63
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHRD_EqGqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, op2_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
if (i->b1() == 0xac) // 0x1ac
|
|
count = i->Ib();
|
|
else // 0x1ad
|
|
count = CL;
|
|
|
|
count &= 0x3f; // use only 6 LSB's
|
|
if (!count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
op2_64 = BX_READ_64BIT_REG(i->nnn());
|
|
|
|
result_64 = (op2_64 << (64 - count)) | (op1_64 >> count);
|
|
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
|
|
cf = (op1_64 >> (count - 1)) & 0x1;
|
|
of = ((result_64 << 1) ^ result_64) >> 63; // of = result62 ^ result63
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::ROL_EqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned bit0, bit63;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (! count) return;
|
|
|
|
result_64 = (op1_64 << count) | (op1_64 >> (64 - count));
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
bit0 = (result_64 & 0x1);
|
|
bit63 = (result_64 >> 63);
|
|
// of = cf ^ result63
|
|
SET_FLAGS_OxxxxC(bit0 ^ bit63, bit0);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::ROL_EqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned bit0, bit63;
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (! count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
result_64 = (op1_64 << count) | (op1_64 >> (64 - count));
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
bit0 = (result_64 & 0x1);
|
|
bit63 = (result_64 >> 63);
|
|
// of = cf ^ result63
|
|
SET_FLAGS_OxxxxC(bit0 ^ bit63, bit0);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::ROR_EqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned bit62, bit63;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (! count) return;
|
|
|
|
result_64 = (op1_64 >> count) | (op1_64 << (64 - count));
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
bit63 = (result_64 >> 63) & 1;
|
|
bit62 = (result_64 >> 62) & 1;
|
|
// of = result62 ^ result63
|
|
SET_FLAGS_OxxxxC(bit62 ^ bit63, bit63);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::ROR_EqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned bit62, bit63;
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (! count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
result_64 = (op1_64 >> count) | (op1_64 << (64 - count));
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
bit63 = (result_64 >> 63) & 1;
|
|
bit62 = (result_64 >> 62) & 1;
|
|
// of = result62 ^ result63
|
|
SET_FLAGS_OxxxxC(bit62 ^ bit63, bit63);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::RCL_EqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
if (count==1) {
|
|
result_64 = (op1_64 << 1) | getB_CF();
|
|
}
|
|
else {
|
|
result_64 = (op1_64 << count) | (getB_CF() << (count - 1)) |
|
|
(op1_64 >> (65 - count));
|
|
}
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
cf = (op1_64 >> (64 - count)) & 0x1;
|
|
of = cf ^ (result_64 >> 63); // of = cf ^ result63
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::RCL_EqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
|
|
if (count==1) {
|
|
result_64 = (op1_64 << 1) | getB_CF();
|
|
}
|
|
else {
|
|
result_64 = (op1_64 << count) | (getB_CF() << (count - 1)) |
|
|
(op1_64 >> (65 - count));
|
|
}
|
|
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
cf = (op1_64 >> (64 - count)) & 0x1;
|
|
of = cf ^ (result_64 >> 63); // of = cf ^ result63
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::RCR_EqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned of, cf;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
if (count==1) {
|
|
result_64 = (op1_64 >> 1) | (((Bit64u) getB_CF()) << 63);
|
|
}
|
|
else {
|
|
result_64 = (op1_64 >> count) | (getB_CF() << (64 - count)) |
|
|
(op1_64 << (65 - count));
|
|
}
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
cf = (op1_64 >> (count - 1)) & 0x1;
|
|
of = ((result_64 << 1) ^ result_64) >> 63;
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::RCR_EqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned of, cf;
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
|
|
if (count==1) {
|
|
result_64 = (op1_64 >> 1) | (((Bit64u) getB_CF()) << 63);
|
|
}
|
|
else {
|
|
result_64 = (op1_64 >> count) | (getB_CF() << (64 - count)) |
|
|
(op1_64 << (65 - count));
|
|
}
|
|
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
cf = (op1_64 >> (count - 1)) & 0x1;
|
|
of = ((result_64 << 1) ^ result_64) >> 63;
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHL_EqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
/* count < 64, since only lower 6 bits used */
|
|
result_64 = (op1_64 << count);
|
|
cf = (op1_64 >> (64 - count)) & 0x1;
|
|
of = cf ^ (result_64 >> 63);
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHL_EqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
/* count < 64, since only lower 6 bits used */
|
|
result_64 = (op1_64 << count);
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
cf = (op1_64 >> (64 - count)) & 0x1;
|
|
of = cf ^ (result_64 >> 63);
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHR_EqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
result_64 = (op1_64 >> count);
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
cf = (op1_64 >> (count - 1)) & 0x1;
|
|
// note, that of == result63 if count == 1 and
|
|
// of == 0 if count >= 2
|
|
of = ((result_64 << 1) ^ result_64) >> 63;
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SHR_EqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
unsigned cf, of;
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
result_64 = (op1_64 >> count);
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
cf = (op1_64 >> (count - 1)) & 0x1;
|
|
// note, that of == result63 if count == 1 and
|
|
// of == 0 if count >= 2
|
|
of = ((result_64 << 1) ^ result_64) >> 63;
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
SET_FLAGS_OxxxxC(of, cf);
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SAR_EqM(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
|
|
BX_CPU_CALL_METHODR(i->ResolveModrm, (i));
|
|
|
|
/* pointer, segment address pair */
|
|
op1_64 = read_RMW_virtual_qword_64(i->seg(), RMAddr(i));
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
/* count < 64, since only lower 6 bits used */
|
|
if (op1_64 & BX_CONST64(0x8000000000000000)) {
|
|
result_64 = (op1_64 >> count) | (BX_CONST64(0xffffffffffffffff) << (64 - count));
|
|
}
|
|
else {
|
|
result_64 = (op1_64 >> count);
|
|
}
|
|
|
|
write_RMW_virtual_qword(result_64);
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
set_CF((op1_64 >> (count - 1)) & 1);
|
|
clear_OF(); /* signed overflow cannot happen in SAR instruction */
|
|
}
|
|
|
|
void BX_CPP_AttrRegparmN(1) BX_CPU_C::SAR_EqR(bxInstruction_c *i)
|
|
{
|
|
Bit64u op1_64, result_64;
|
|
unsigned count;
|
|
|
|
if (i->b1() == 0xd3)
|
|
count = CL;
|
|
else // 0xc1 or 0xd1
|
|
count = i->Ib();
|
|
|
|
count &= 0x3f;
|
|
if (!count) return;
|
|
|
|
op1_64 = BX_READ_64BIT_REG(i->rm());
|
|
|
|
/* count < 64, since only lower 6 bits used */
|
|
if (op1_64 & BX_CONST64(0x8000000000000000)) {
|
|
result_64 = (op1_64 >> count) | (BX_CONST64(0xffffffffffffffff) << (64 - count));
|
|
}
|
|
else {
|
|
result_64 = (op1_64 >> count);
|
|
}
|
|
|
|
BX_WRITE_64BIT_REG(i->rm(), result_64);
|
|
|
|
SET_FLAGS_OSZAPC_LOGIC_64(result_64); /* handle SF, ZF and AF flags */
|
|
set_CF((op1_64 >> (count - 1)) & 1);
|
|
clear_OF(); /* signed overflow cannot happen in SAR instruction */
|
|
}
|
|
|
|
#endif /* if BX_SUPPORT_X86_64 */
|