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GTE: Add AVSZ3/AVSZ4

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This commit is contained in:
Connor McLaughlin 2019-09-22 20:38:11 +10:00
parent 005b06ae0c
commit c772047715
3 changed files with 55 additions and 10 deletions
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58
src/pse/gte.cpp
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@ -145,9 +145,6 @@ void Core::WriteDataRegister(u32 index, u32 value)
{
// IRGB register, convert 555 to 16-bit
m_regs.IRGB = value & UINT32_C(0x7FFF);
// m_regs.IR1 = static_cast<s16>(Truncate16((value & UINT32_C(0x1F)) * UINT32_C(0x80)));
// m_regs.IR2 = static_cast<s16>(Truncate16(((value >> 5) & UINT32_C(0x1F)) * UINT32_C(0x80)));
// m_regs.IR3 = static_cast<s16>(Truncate16(((value >> 10) & UINT32_C(0x1F)) * UINT32_C(0x80)));
m_regs.dr32[9] = SignExtend32(static_cast<u16>(Truncate16((value & UINT32_C(0x1F)) * UINT32_C(0x80))));
m_regs.dr32[10] = SignExtend32(static_cast<u16>(Truncate16(((value >> 5) & UINT32_C(0x1F)) * UINT32_C(0x80))));
m_regs.dr32[11] = SignExtend32(static_cast<u16>(Truncate16(((value >> 10) & UINT32_C(0x1F)) * UINT32_C(0x80))));
@ -277,6 +274,14 @@ void Core::ExecuteInstruction(Instruction inst)
Execute_SQR(inst);
break;
case 0x2D:
Execute_AVSZ3(inst);
break;
case 0x2E:
Execute_AVSZ4(inst);
break;
case 0x30:
Execute_RTPT(inst);
break;
@ -342,7 +347,23 @@ void Core::SetIR0(s32 value)
}
// store the sign extension in the padding bits
m_regs.dr32[8] = value;
m_regs.dr32[8] = static_cast<u32>(value);
}
void Core::SetOTZ(s32 value)
{
if (value < 0)
{
m_regs.FLAG.sz1_otz_saturated = true;
value = 0;
}
else if (value > 0xFFFF)
{
m_regs.FLAG.sz1_otz_saturated = true;
value = 0xFFFF;
}
m_regs.dr32[7] = static_cast<u32>(value);
}
void Core::PushSXY(s32 x, s32 y)
@ -499,10 +520,6 @@ void Core::Execute_NCLIP(Instruction inst)
s64(m_regs.SXY2[0]) * s64(m_regs.SXY0[1]) - s64(m_regs.SXY0[0]) * s64(m_regs.SXY2[1]) -
s64(m_regs.SXY1[0]) * s64(m_regs.SXY0[1]) - s64(m_regs.SXY2[0]) * s64(m_regs.SXY1[1]);
const s64 MAC0 = s64(m_regs.SXY0[0]) * m_regs.SXY1[1] + m_regs.SXY1[0] * m_regs.SXY2[1] +
m_regs.SXY2[0] * m_regs.SXY0[1] - m_regs.SXY0[0] * m_regs.SXY2[1] - m_regs.SXY1[0] * m_regs.SXY0[1] -
m_regs.SXY2[0] * m_regs.SXY1[1];
SetMAC(0, MAC0x);
m_regs.FLAG.UpdateError();
@ -525,4 +542,29 @@ void Core::Execute_SQR(Instruction inst)
m_regs.FLAG.UpdateError();
}
void Core::Execute_AVSZ3(Instruction inst)
{
m_regs.FLAG.Clear();
const s64 MAC0 = static_cast<s64>(m_regs.ZSF3) *
static_cast<s32>(ZeroExtend32(m_regs.SZ1) + ZeroExtend32(m_regs.SZ2) + ZeroExtend32(m_regs.SZ3));
SetMAC(0, MAC0);
SetOTZ(static_cast<s32>(MAC0 / 0x1000));
m_regs.FLAG.UpdateError();
}
void Core::Execute_AVSZ4(Instruction inst)
{
m_regs.FLAG.Clear();
const s64 MAC0 =
static_cast<s64>(m_regs.ZSF4) * static_cast<s32>(ZeroExtend32(m_regs.SZ0) + ZeroExtend32(m_regs.SZ1) +
ZeroExtend32(m_regs.SZ2) + ZeroExtend32(m_regs.SZ3));
SetMAC(0, MAC0);
SetOTZ(static_cast<s32>(MAC0 / 0x1000));
m_regs.FLAG.UpdateError();
}
} // namespace GTE

3
src/pse/gte.h
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@ -29,6 +29,7 @@ private:
void SetMAC(u32 index, s64 value);
void SetIR(u32 index, s32 value, bool lm);
void SetIR0(s32 value);
void SetOTZ(s32 value);
void PushSXY(s32 x, s32 y);
void PushSZ(s32 value);
s32 Divide(s32 dividend, s32 divisor);
@ -40,6 +41,8 @@ private:
void Execute_RTPT(Instruction inst);
void Execute_NCLIP(Instruction inst);
void Execute_SQR(Instruction inst);
void Execute_AVSZ3(Instruction inst);
void Execute_AVSZ4(Instruction inst);
Regs m_regs = {};
};

4
src/pse/gte_types.h
View File

@ -118,9 +118,9 @@ union Regs
s16 DQA; // 59
u16 pad21; // 59
s32 DQB; // 60
u16 ZSF3; // 61
s16 ZSF3; // 61
u16 pad22; // 61
u16 ZSF4; // 62
s16 ZSF4; // 62
u16 pad23; // 62
FLAGS FLAG; // 63
};