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Implement edge case in SPECIAL_DSRL32 

When m_Opcode.sa == 0, the results for cpu recompiler do not match cpu
interpreter. For example with dsrl32 t9, t8, 0x0, and t8 =
0xC0C0C0C000000000 the result of t9 for cpu recompiler =
0xFFFFFFFFC0C0C0C0, while cpu interpreter = 0xC0C0C0C0C0C0C0C0.

This commit fixes the Killer Instinct health bar issue.
This commit is contained in:
LegendOfDragoon 2015-07-28 13:30:21 -07:00
parent 9f52cfd348
commit 2f812afca7
1 changed files with 10 additions and 3 deletions
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13
Source/Project64/N64 System/Recompiler/Recompiler Ops.cpp
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@ -3933,9 +3933,16 @@ void CRecompilerOps::SPECIAL_DSRL32() {
if (IsConst(m_Opcode.rt)) {
if (m_Opcode.rt != m_Opcode.rd)
UnMap_GPR(m_Opcode.rd, false);
m_RegWorkingSet.SetMipsRegState(m_Opcode.rd,CRegInfo::STATE_CONST_32_ZERO);
m_RegWorkingSet.SetMipsRegLo(m_Opcode.rd, (DWORD)(GetMipsReg(m_Opcode.rt) >> (m_Opcode.sa + 32)));
if (m_Opcode.sa == 0) {
MIPS_DWORD Value;
Value.UW[0] = Value.UW[1] = GetMipsRegHi(m_Opcode.rt);
m_RegWorkingSet.SetMipsRegState(m_Opcode.rd,CRegInfo::STATE_CONST_64);
m_RegWorkingSet.SetMipsReg(m_Opcode.rd, Value.UDW);
} else {
m_RegWorkingSet.SetMipsRegState(m_Opcode.rd,CRegInfo::STATE_CONST_32_ZERO);
m_RegWorkingSet.SetMipsRegLo(m_Opcode.rd, (DWORD)(GetMipsReg(m_Opcode.rt) >> (m_Opcode.sa + 32)));
}
} else if (IsMapped(m_Opcode.rt)) {
ProtectGPR(m_Opcode.rt);
if (Is64Bit(m_Opcode.rt)) {