dolphin/Source/Plugins/Plugin_DSP_LLE/Src/HLE_Helper.h

130 lines
2.4 KiB
C++

// Copyright (C) 2003-2008 Dolphin Project.
// 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, version 2.0.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#ifndef HLE_HELPER_H
#define HLE_HELPER_H
#include "gdsp_interpreter.h"
bool WriteDMEM(uint16 addr, uint16 val);
uint16 ReadDMEM(uint16 addr);
void Update_SR_Register(sint64 _Value);
sint8 GetMultiplyModifier();
template<unsigned N>
class TAccumulator
{
public:
TAccumulator()
{
_assert_(N < 2);
}
void operator=(sint64 val)
{
setValue(val);
}
void operator<<=(sint64 value)
{
sint64 acc = getValue();
acc <<= value;
setValue(acc);
}
void operator>>=(sint64 value)
{
sint64 acc = getValue();
acc >>= value;
setValue(acc);
}
void operator+=(sint64 value)
{
sint64 acc = getValue();
acc += value;
setValue(acc);
}
operator sint64()
{
return getValue();
}
operator uint64()
{
return getValue();
}
inline void setValue(sint64 val)
{
g_dsp.r[0x1c + N] = (uint16)val;
val >>= 16;
g_dsp.r[0x1e + N] = (uint16)val;
val >>= 16;
g_dsp.r[0x10 + N] = (uint16)val;
}
inline sint64 getValue()
{
sint64 val;
sint64 low_acc;
val = (sint8)g_dsp.r[0x10 + N];
val <<= 32;
low_acc = g_dsp.r[0x1e + N];
low_acc <<= 16;
low_acc |= g_dsp.r[0x1c + N];
val |= low_acc;
return(val);
}
};
class CProd
{
public:
CProd()
{
}
void operator=(sint64 val)
{
g_dsp.r[0x14] = (uint16)val;
val >>= 16;
g_dsp.r[0x15] = (uint16)val;
val >>= 16;
g_dsp.r[0x16] = (uint16)val;
g_dsp.r[0x17] = 0;
}
operator sint64()
{
sint64 val;
sint64 low_prod;
val = (sint8)g_dsp.r[0x16];
val <<= 32;
low_prod = g_dsp.r[0x15];
low_prod += g_dsp.r[0x17];
low_prod <<= 16;
low_prod |= g_dsp.r[0x14];
val += low_prod;
return(val);
}
};
#endif