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

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/*====================================================================
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_ext_op.h"
#include "gdsp_interpreter.h"
#include "gdsp_memory.h"
extern inline void dsp_op_write_reg(uint8 reg, uint16 val);
//
void dsp_op_ext_r_epi(uint16 _Opcode)
{
uint8 op = (_Opcode >> 2) & 0x3;
uint8 reg = _Opcode & 0x3;
switch (op)
{
case 0x00:
ErrorLog("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(uint16 _Opcode)
{
uint8 sreg = _Opcode & 0x3;
uint8 dreg = ((_Opcode >> 2) & 0x3);
g_dsp.r[dreg + 0x18] = g_dsp.r[sreg + 0x1c];
}
void dsp_op_ext_s(uint16 _Opcode)
{
uint8 dreg = _Opcode & 0x3;
uint8 sreg = ((_Opcode >> 3) & 0x3) + 0x1c;
dsp_dmem_write(g_dsp.r[dreg], g_dsp.r[sreg]);
if (_Opcode & 0x04)
{
g_dsp.r[dreg] += g_dsp.r[dreg + 4];
}
else
{
g_dsp.r[dreg]++;
}
}
void dsp_op_ext_l(uint16 _Opcode)
{
uint8 sreg = _Opcode & 0x3;
uint8 dreg = ((_Opcode >> 3) & 0x7) + 0x18;
uint16 val = dsp_dmem_read(g_dsp.r[sreg]);
g_dsp.r[dreg] = val;
if (_Opcode & 0x04)
{
g_dsp.r[sreg] += g_dsp.r[sreg + 4];
}
else
{
g_dsp.r[sreg]++;
}
}
void dsp_op_ext_ls_pro(uint16 _Opcode)
{
uint8 areg = (_Opcode & 0x1) + 0x1e;
dsp_dmem_write(g_dsp.r[0x03], g_dsp.r[areg]);
if (_Opcode & 0x8)
{
g_dsp.r[0x03] += g_dsp.r[0x07];
}
else
{
g_dsp.r[0x03]++;
}
}
void dsp_op_ext_ls_epi(uint16 _Opcode)
{
uint8 dreg = ((_Opcode >> 4) & 0x3) + 0x18;
uint16 val = dsp_dmem_read(g_dsp.r[0x00]);
dsp_op_write_reg(dreg, val);
if (_Opcode & 0x4)
{
g_dsp.r[0x00] += g_dsp.r[0x04];
}
else
{
g_dsp.r[0x00]++;
}
}
void dsp_op_ext_sl_pro(uint16 _Opcode)
{
uint8 areg = (_Opcode & 0x1) + 0x1e;
dsp_dmem_write(g_dsp.r[0x00], g_dsp.r[areg]);
if (_Opcode & 0x4)
{
g_dsp.r[0x00] += g_dsp.r[0x04];
}
else
{
g_dsp.r[0x00]++;
}
}
void dsp_op_ext_sl_epi(uint16 _Opcode)
{
uint8 dreg = ((_Opcode >> 4) & 0x3) + 0x18;
uint16 val = dsp_dmem_read(g_dsp.r[0x03]);
dsp_op_write_reg(dreg, val);
if (_Opcode & 0x8)
{
g_dsp.r[0x03] += g_dsp.r[0x07];
}
else
{
g_dsp.r[0x03]++;
}
}
void dsp_op_ext_ld(uint16 _Opcode)
{
uint8 dreg1 = (((_Opcode >> 5) & 0x1) << 1) + 0x18;
uint8 dreg2 = (((_Opcode >> 4) & 0x1) << 1) + 0x19;
uint8 sreg = _Opcode & 0x3;
g_dsp.r[dreg1] = dsp_dmem_read(g_dsp.r[sreg]);
g_dsp.r[dreg2] = dsp_dmem_read(g_dsp.r[0x03]);
if (_Opcode & 0x04)
{
g_dsp.r[sreg] += g_dsp.r[sreg + 0x04];
}
else
{
g_dsp.r[sreg]++;
}
if (_Opcode & 0x08)
{
g_dsp.r[0x03] += g_dsp.r[0x07];
}
else
{
g_dsp.r[0x03]++;
}
}
// ================================================================================
//
//
//
// ================================================================================
void dsp_op_ext_ops_pro(uint16 _Opcode)
{
if ((_Opcode & 0xFF) == 0){return;}
switch ((_Opcode >> 4) & 0xf)
{
case 0x00:
dsp_op_ext_r_epi(_Opcode);
break;
case 0x01:
dsp_op_ext_mv(_Opcode);
break;
case 0x02:
case 0x03:
dsp_op_ext_s(_Opcode);
break;
case 0x04:
case 0x05:
case 0x06:
case 0x07:
dsp_op_ext_l(_Opcode);
break;
case 0x08:
case 0x09:
case 0x0a:
case 0x0b:
if (_Opcode & 0x2)
{
dsp_op_ext_sl_pro(_Opcode);
}
else
{
dsp_op_ext_ls_pro(_Opcode);
}
return;
case 0x0c:
case 0x0d:
case 0x0e:
case 0x0f:
dsp_op_ext_ld(_Opcode);
break;
}
}
void dsp_op_ext_ops_epi(uint16 _Opcode)
{
if ((_Opcode & 0xFF) == 0){return;}
switch ((_Opcode >> 4) & 0xf)
{
case 0x08:
case 0x09:
case 0x0a:
case 0x0b:
if (_Opcode & 0x2)
{
dsp_op_ext_sl_epi(_Opcode);
}
else
{
dsp_op_ext_ls_epi(_Opcode);
}
return;
}
}