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DSPLLE - SR_10 flag implemented (no idea what name should it have or how/when this is supposed to be used)

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5075 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Marko Pusljar
2010-02-17 19:10:31 +00:00
parent 634f6e512e
commit 377ece3294
4 changed files with 60 additions and 34 deletions
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74
Source/Core/DSPCore/Src/DSPIntCCUtil.cpp
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@ -26,32 +26,42 @@
namespace DSPInterpreter {
void Update_SR_Register64(s64 _Value, bool carry, bool overflow)
void Update_SR_Register64(s64 _Value, bool carry, bool overflow, bool sr10)
{
// TODO: Should also set 0x10 and 0x01 (also 0x02?)
// TODO: recheck 0x1,0x2,even 0x80... implement...
g_dsp.r[DSP_REG_SR] &= ~SR_CMP_MASK;
if (_Value < 0)
{
g_dsp.r[DSP_REG_SR] |= SR_SIGN;
}
if (_Value == 0)
{
g_dsp.r[DSP_REG_SR] |= SR_ARITH_ZERO;
}
// 0x01
if (carry)
{
g_dsp.r[DSP_REG_SR] |= SR_CARRY;
}
// 0x02
if (overflow)
{
g_dsp.r[DSP_REG_SR] |= SR_OVERFLOW;
}
// Checks if top bits of m are equal, what is it good for?
// 0x04
if (_Value == 0)
{
g_dsp.r[DSP_REG_SR] |= SR_ARITH_ZERO;
}
// 0x08
if (_Value < 0)
{
g_dsp.r[DSP_REG_SR] |= SR_SIGN;
}
// 0x10 - abs((u40)acc?) >= 0x80000000
if (sr10)
{
g_dsp.r[DSP_REG_SR] |= SR_10;
}
// 0x20 - Checks if top bits of m are equal, what is it good for?
if (((_Value & 0xc0000000) == 0) || ((_Value & 0xc0000000) == 0xc0000000))
{
g_dsp.r[DSP_REG_SR] |= SR_TOP2BITS;
@ -59,32 +69,42 @@ void Update_SR_Register64(s64 _Value, bool carry, bool overflow)
}
void Update_SR_Register16(s16 _Value, bool carry, bool overflow)
void Update_SR_Register16(s16 _Value, bool carry, bool overflow, bool sr10)
{
// TODO: recheck 0x1,0x2,even 0x80... implement...
g_dsp.r[DSP_REG_SR] &= ~SR_CMP_MASK;
if (_Value < 0)
{
g_dsp.r[DSP_REG_SR] |= SR_SIGN;
}
if (_Value == 0)
{
g_dsp.r[DSP_REG_SR] |= SR_ARITH_ZERO;
}
// 0x01
if (carry)
{
g_dsp.r[DSP_REG_SR] |= SR_CARRY;
}
// 0x02
if (overflow)
{
g_dsp.r[DSP_REG_SR] |= SR_OVERFLOW;
}
// 0x04
if (_Value == 0)
{
g_dsp.r[DSP_REG_SR] |= SR_ARITH_ZERO;
}
// Checks if top bits are equal, what is it good for?
// 0x08
if (_Value < 0)
{
g_dsp.r[DSP_REG_SR] |= SR_SIGN;
}
// 0x10 - abs((u40)acc?) >= 0x80000000
if (sr10)
{
g_dsp.r[DSP_REG_SR] |= SR_10;
}
// 0x20 - Checks if top bits of m are equal, what is it good for?
if ((((u16)_Value >> 14) == 0) || (((u16)_Value >> 14) == 3))
{
g_dsp.r[DSP_REG_SR] |= SR_TOP2BITS;