dolphin/Source/Plugins/Plugin_DSP_LLE-testing/Src/gdsp_ext_op.cpp

285 lines
4.9 KiB
C++

/*====================================================================
filename: opcodes.h
project: GameCube DSP Tool (gcdsp)
created: 2005.03.04
mail: duddie@walla.com
Copyright (c) 2005 Duddie
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
====================================================================*/
//
//
// At the moment just ls and sl are using the prolog
// perhaps all actions on r03 must be in the prolog
//
#include "Globals.h"
#include "gdsp_opcodes_helper.h"
//
void dsp_op_ext_r_epi(const UDSPInstruction& opc)
{
u8 op = (opc.hex >> 2) & 0x3;
u8 reg = opc.hex & 0x3;
switch (op)
{
case 0x00:
ERROR_LOG(DSPLLE, "dsp_op_ext_r_epi");
break;
case 0x01:
g_dsp.r[reg]--;
break;
case 0x02:
g_dsp.r[reg]++;
break;
case 0x03:
g_dsp.r[reg] += g_dsp.r[reg + 4];
break;
}
}
void dsp_op_ext_mv(const UDSPInstruction& opc)
{
u8 sreg = opc.hex & 0x3;
u8 dreg = ((opc.hex >> 2) & 0x3);
g_dsp.r[dreg + 0x18] = g_dsp.r[sreg + 0x1c];
}
void dsp_op_ext_s(const UDSPInstruction& opc)
{
u8 dreg = opc.hex & 0x3;
u8 sreg = ((opc.hex >> 3) & 0x3) + 0x1c;
dsp_dmem_write(g_dsp.r[dreg], g_dsp.r[sreg]);
if (opc.hex & 0x04)
{
g_dsp.r[dreg] += g_dsp.r[dreg + 4];
}
else
{
g_dsp.r[dreg]++;
}
}
void dsp_op_ext_l(const UDSPInstruction& opc)
{
u8 sreg = opc.hex & 0x3;
u8 dreg = ((opc.hex >> 3) & 0x7) + 0x18;
u16 val = dsp_dmem_read(g_dsp.r[sreg]);
g_dsp.r[dreg] = val;
if (opc.hex & 0x04)
{
g_dsp.r[sreg] += g_dsp.r[sreg + 4];
}
else
{
g_dsp.r[sreg]++;
}
}
void dsp_op_ext_ls_pro(const UDSPInstruction& opc)
{
u8 areg = (opc.hex & 0x1) + 0x1e;
dsp_dmem_write(g_dsp.r[0x03], g_dsp.r[areg]);
if (opc.hex & 0x8)
{
g_dsp.r[0x03] += g_dsp.r[0x07];
}
else
{
g_dsp.r[0x03]++;
}
}
void dsp_op_ext_ls_epi(const UDSPInstruction& opc)
{
u8 dreg = ((opc.hex >> 4) & 0x3) + 0x18;
u16 val = dsp_dmem_read(g_dsp.r[0x00]);
dsp_op_write_reg(dreg, val);
if (opc.hex & 0x4)
{
g_dsp.r[0x00] += g_dsp.r[0x04];
}
else
{
g_dsp.r[0x00]++;
}
}
void dsp_op_ext_sl_pro(const UDSPInstruction& opc)
{
u8 areg = (opc.hex & 0x1) + 0x1e;
dsp_dmem_write(g_dsp.r[0x00], g_dsp.r[areg]);
if (opc.hex & 0x4)
{
g_dsp.r[0x00] += g_dsp.r[0x04];
}
else
{
g_dsp.r[0x00]++;
}
}
void dsp_op_ext_sl_epi(const UDSPInstruction& opc)
{
u8 dreg = ((opc.hex >> 4) & 0x3) + 0x18;
u16 val = dsp_dmem_read(g_dsp.r[0x03]);
dsp_op_write_reg(dreg, val);
if (opc.hex & 0x8)
{
g_dsp.r[0x03] += g_dsp.r[0x07];
}
else
{
g_dsp.r[0x03]++;
}
}
void dsp_op_ext_ld(const UDSPInstruction& opc)
{
u8 dreg1 = (((opc.hex >> 5) & 0x1) << 1) + 0x18;
u8 dreg2 = (((opc.hex >> 4) & 0x1) << 1) + 0x19;
u8 sreg = opc.hex & 0x3;
g_dsp.r[dreg1] = dsp_dmem_read(g_dsp.r[sreg]);
g_dsp.r[dreg2] = dsp_dmem_read(g_dsp.r[0x03]);
if (opc.hex & 0x04)
{
g_dsp.r[sreg] += g_dsp.r[sreg + 0x04];
}
else
{
g_dsp.r[sreg]++;
}
if (opc.hex & 0x08)
{
g_dsp.r[0x03] += g_dsp.r[0x07];
}
else
{
g_dsp.r[0x03]++;
}
}
// ================================================================================
//
//
//
// ================================================================================
void dsp_op_ext_ops_pro(const UDSPInstruction& opc)
{
if ((opc.hex & 0xFF) == 0){return;}
switch ((opc.hex >> 4) & 0xf)
{
case 0x00:
dsp_op_ext_r_epi(opc.hex);
break;
case 0x01:
dsp_op_ext_mv(opc.hex);
break;
case 0x02:
case 0x03:
dsp_op_ext_s(opc.hex);
break;
case 0x04:
case 0x05:
case 0x06:
case 0x07:
dsp_op_ext_l(opc.hex);
break;
case 0x08:
case 0x09:
case 0x0a:
case 0x0b:
if (opc.hex & 0x2)
{
dsp_op_ext_sl_pro(opc.hex);
}
else
{
dsp_op_ext_ls_pro(opc.hex);
}
return;
case 0x0c:
case 0x0d:
case 0x0e:
case 0x0f:
dsp_op_ext_ld(opc.hex);
break;
}
}
void dsp_op_ext_ops_epi(const UDSPInstruction& opc)
{
if ((opc.hex & 0xFF) == 0){return;}
switch ((opc.hex >> 4) & 0xf)
{
case 0x08:
case 0x09:
case 0x0a:
case 0x0b:
if (opc.hex & 0x2)
{
dsp_op_ext_sl_epi(opc.hex);
}
else
{
dsp_op_ext_ls_epi(opc.hex);
}
return;
}
}