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DSP: build fixin', more movin', some comments.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3564 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
hrydgard 2009-06-28 10:24:44 +00:00
parent 895b02f410
commit 5c7fc8ed7b
26 changed files with 201 additions and 259 deletions
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181
Source/Core/DSPCore/Src/DSPIntCCUtil.cpp Normal file
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// Copyright (C) 2003-2009 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/
// Additional copyrights go to Duddie and Tratax (c) 2004
// HELPER FUNCTIONS
#include "DSPIntCCUtil.h"
#include "DSPCore.h"
#include "DSPInterpreter.h"
namespace DSPInterpreter {
void Update_SR_Register64(s64 _Value)
{
g_dsp.r[DSP_REG_SR] &= ~SR_CMP_MASK;
if (_Value < 0)
{
g_dsp.r[DSP_REG_SR] |= 0x8;
}
if (_Value == 0)
{
g_dsp.r[DSP_REG_SR] |= 0x4;
}
// weird
if ((_Value >> 62) == 0)
{
g_dsp.r[DSP_REG_SR] |= 0x20;
}
}
void Update_SR_Register16(s16 _Value)
{
g_dsp.r[DSP_REG_SR] &= ~SR_CMP_MASK;
if (_Value < 0)
{
g_dsp.r[DSP_REG_SR] |= 0x8;
}
if (_Value == 0)
{
g_dsp.r[DSP_REG_SR] |= 0x4;
}
// weird
if ((_Value >> 14) == 0)
{
g_dsp.r[DSP_REG_SR] |= 0x20;
}
}
void Update_SR_LZ(s64 value) {
if (value == 0)
{
g_dsp.r[DSP_REG_SR] |= SR_LOGIC_ZERO;
}
else
{
g_dsp.r[DSP_REG_SR] &= ~SR_LOGIC_ZERO;
}
}
int GetMultiplyModifier()
{
if (g_dsp.r[DSP_REG_SR] & SR_MUL_MODIFY)
return 1;
else
return 2;
}
inline bool isCarry() {
return (g_dsp.r[DSP_REG_SR] & 0x01) ? true : false;
}
inline bool isSign() {
return ((g_dsp.r[DSP_REG_SR] & 0x02) != (g_dsp.r[DSP_REG_SR] & 0x08));
}
inline bool isZero() {
return (g_dsp.r[DSP_REG_SR] & 0x04) ? true : false;
}
//see gdsp_registers.h for flags
bool CheckCondition(u8 _Condition)
{
bool taken = false;
switch (_Condition & 0xf)
{
case 0x0: //NS - NOT SIGN
if (! isSign())
taken = true;
break;
case 0x1: // S - SIGN
if (isSign())
taken = true;
break;
case 0x2: // G - GREATER
if (! isSign() && !isZero())
taken = true;
break;
case 0x3: // LE - LESS EQUAL
if (isSign() || isZero())
taken = true;
break;
case 0x4: // NZ - NOT ZERO
if (!isZero())
taken = true;
break;
case 0x5: // Z - ZERO
if (isZero())
taken = true;
break;
case 0x6: // L - LESS
// Should be that once we set 0x01
if (!isCarry())
// if (isSign())
taken = true;
break;
case 0x7: // GE - GREATER EQUAL
// Should be that once we set 0x01
if (isCarry())
// if (! isSign() || isZero())
taken = true;
break;
case 0xc: // LNZ - LOGIC NOT ZERO
if (!(g_dsp.r[DSP_REG_SR] & SR_LOGIC_ZERO))
taken = true;
break;
case 0xd: // LZ - LOGIC ZERO
if (g_dsp.r[DSP_REG_SR] & SR_LOGIC_ZERO)
taken = true;
break;
case 0xf: // Empty
taken = true;
break;
default:
ERROR_LOG(DSPLLE, "Unknown condition check: 0x%04x\n", _Condition & 0xf);
break;
}
return taken;
}
} // namespace