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add code for edge case in DSRLV for cbfd

This commit is contained in:
Nicholas 2015-01-23 22:21:34 +11:00
parent d96ceefe60
commit 53b86e559c
1 changed files with 19 additions and 4 deletions
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23
Source/Project64/N64 System/Recompiler/Recompiler Ops.cpp
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@ -2138,10 +2138,25 @@ void CRecompilerOps::SPECIAL_DSRLV (void) {
}
return;
}
//if (Shift < 0x20) {
//} else {
//}
CRecompilerOps::UnknownOpcode();
if (m_Opcode.rd == m_Opcode.rt)
{
CRecompilerOps::UnknownOpcode();
return;
}
Map_TempReg(x86_ECX,-1,FALSE);
MoveConstToX86reg(Shift, x86_ECX);
Map_GPR_64bit(m_Opcode.rd,m_Opcode.rt);
if ((Shift & 0x20) == 0x20)
{
MoveX86RegToX86Reg(GetMipsRegMapHi(m_Opcode.rd),GetMipsRegMapLo(m_Opcode.rd));
XorX86RegToX86Reg(GetMipsRegMapHi(m_Opcode.rd),GetMipsRegMapHi(m_Opcode.rd));
AndConstToX86Reg(x86_ECX,0x1F);
ShiftRightUnsign(GetMipsRegMapLo(m_Opcode.rd));
} else {
ShiftRightDouble(GetMipsRegMapLo(m_Opcode.rd),GetMipsRegMapHi(m_Opcode.rd));
ShiftRightUnsign(GetMipsRegMapHi(m_Opcode.rd));
}
} else {
Map_TempReg(x86_ECX,m_Opcode.rs,FALSE);
AndConstToX86Reg(x86_ECX,0x3F);