psxinterpreter: fix division by zero

Based on info from Ryphecha.

diff --git a/libpcsxcore/psxinterpreter.c b/libpcsxcore/psxinterpreter.c
index f171205..8eb4749 100644 (file)
--- a/libpcsxcore/psxinterpreter.c
+++ b/libpcsxcore/psxinterpreter.c
@@ -504,6 +504,10 @@ void psxDIV() {
                _i32(_rLo_) = _i32(_rRs_) / _i32(_rRt_);
                _i32(_rHi_) = _i32(_rRs_) % _i32(_rRt_);
        }
+       else {
+               _i32(_rLo_) = _i32(_rRs_) >= 0 ? 0xffffffff : 1;
+               _i32(_rHi_) = _i32(_rRs_);
+       }
 }
 
 void psxDIVU() {
@@ -511,6 +515,10 @@ void psxDIVU() {
                _rLo_ = _rRs_ / _rRt_;
                _rHi_ = _rRs_ % _rRt_;
        }
+       else {
+               _i32(_rLo_) = 0xffffffff;
+               _i32(_rHi_) = _i32(_rRs_);
+       }
 }
 
 void psxMULT() {