/////////////////////////////////////////////////////////////////////////
// $Id: segment_ctrl.cc 13466 2018-02-16 07:57:32Z sshwarts $
/////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2001-2018  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

void BX_CPP_AttrRegparmN(2) BX_CPU_C::load_segw(bxInstruction_c *i, unsigned seg)
{
  bx_address eaddr = BX_CPU_RESOLVE_ADDR(i);

  Bit16u segsel = read_virtual_word(i->seg(), (eaddr + 2) & i->asize_mask());
  Bit16u reg_16 = read_virtual_word(i->seg(),  eaddr);

  load_seg_reg(&BX_CPU_THIS_PTR sregs[seg], segsel);

  BX_WRITE_16BIT_REG(i->dst(), reg_16);
}

void BX_CPP_AttrRegparmN(2) BX_CPU_C::load_segd(bxInstruction_c *i, unsigned seg)
{
  bx_address eaddr = BX_CPU_RESOLVE_ADDR(i);

  Bit16u segsel = read_virtual_word(i->seg(), (eaddr + 4) & i->asize_mask());
  Bit32u reg_32 = read_virtual_dword(i->seg(), eaddr);

  load_seg_reg(&BX_CPU_THIS_PTR sregs[seg], segsel);

  BX_WRITE_32BIT_REGZ(i->dst(), reg_32);
}

#if BX_SUPPORT_X86_64
void BX_CPP_AttrRegparmN(2) BX_CPU_C::load_segq(bxInstruction_c *i, unsigned seg)
{
  bx_address eaddr = BX_CPU_RESOLVE_ADDR_64(i);

  Bit16u segsel = read_linear_word(i->seg(), get_laddr64(i->seg(), (eaddr + 8) & i->asize_mask()));
  Bit64u reg_64 = read_linear_qword(i->seg(), get_laddr64(i->seg(), eaddr));

  load_seg_reg(&BX_CPU_THIS_PTR sregs[seg], segsel);

  BX_WRITE_64BIT_REG(i->dst(), reg_64);
}
#endif

// LES/LDS can't be called from long64 mode
void BX_CPP_AttrRegparmN(1) BX_CPU_C::LES_GwMp(bxInstruction_c *i)
{
  load_segw(i, BX_SEG_REG_ES);

  BX_NEXT_INSTR(i);
}

// LES/LDS can't be called from long64 mode
void BX_CPP_AttrRegparmN(1) BX_CPU_C::LES_GdMp(bxInstruction_c *i)
{
  load_segd(i, BX_SEG_REG_ES);

  BX_NEXT_INSTR(i);
}

// LES/LDS can't be called from long64 mode
void BX_CPP_AttrRegparmN(1) BX_CPU_C::LDS_GwMp(bxInstruction_c *i)
{
  load_segw(i, BX_SEG_REG_DS);

  BX_NEXT_INSTR(i);
}

// LES/LDS can't be called from long64 mode
void BX_CPP_AttrRegparmN(1) BX_CPU_C::LDS_GdMp(bxInstruction_c *i)
{
  load_segd(i, BX_SEG_REG_DS);

  BX_NEXT_INSTR(i);
}

void BX_CPP_AttrRegparmN(1) BX_CPU_C::LFS_GwMp(bxInstruction_c *i)
{
  load_segw(i, BX_SEG_REG_FS);

  BX_NEXT_INSTR(i);
}

void BX_CPP_AttrRegparmN(1) BX_CPU_C::LFS_GdMp(bxInstruction_c *i)
{
  load_segd(i, BX_SEG_REG_FS);

  BX_NEXT_INSTR(i);
}

#if BX_SUPPORT_X86_64
void BX_CPP_AttrRegparmN(1) BX_CPU_C::LFS_GqMp(bxInstruction_c *i)
{
  load_segq(i, BX_SEG_REG_FS);

  BX_NEXT_INSTR(i);
}
#endif

void BX_CPP_AttrRegparmN(1) BX_CPU_C::LGS_GwMp(bxInstruction_c *i)
{
  load_segw(i, BX_SEG_REG_GS);

  BX_NEXT_INSTR(i);
}

void BX_CPP_AttrRegparmN(1) BX_CPU_C::LGS_GdMp(bxInstruction_c *i)
{
  load_segd(i, BX_SEG_REG_GS);

  BX_NEXT_INSTR(i);
}

#if BX_SUPPORT_X86_64
void BX_CPP_AttrRegparmN(1) BX_CPU_C::LGS_GqMp(bxInstruction_c *i)
{
  load_segq(i, BX_SEG_REG_GS);

  BX_NEXT_INSTR(i);
}
#endif

void BX_CPP_AttrRegparmN(1) BX_CPU_C::LSS_GwMp(bxInstruction_c *i)
{
  load_segw(i, BX_SEG_REG_SS);

  BX_NEXT_INSTR(i);
}

void BX_CPP_AttrRegparmN(1) BX_CPU_C::LSS_GdMp(bxInstruction_c *i)
{
  load_segd(i, BX_SEG_REG_SS);

  BX_NEXT_INSTR(i);
}

#if BX_SUPPORT_X86_64
void BX_CPP_AttrRegparmN(1) BX_CPU_C::LSS_GqMp(bxInstruction_c *i)
{
  load_segq(i, BX_SEG_REG_SS);

  BX_NEXT_INSTR(i);
}
#endif
