psxbios: Merge interrupt_r26 fix from PCSX4ALL.

Thanks DmitrySmagin for the fix.

diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c
index b27d195..6a52d7e 100644 (file)
--- a/libpcsxcore/psxbios.c
+++ b/libpcsxcore/psxbios.c
@@ -307,6 +307,8 @@ static inline void DeliverEvent(u32 ev, u32 spec) {
        } else Event[ev][spec].status = EvStALREADY;
 }
 
+static unsigned interrupt_r26=0x8004E8B0;
+
 static inline void SaveRegs() {
        memcpy(regs, psxRegs.GPR.r, 32*4);
        regs[32] = psxRegs.GPR.n.lo;
@@ -1968,6 +1970,7 @@ void psxBios_ReturnFromException() { // 17
        LoadRegs();
 
        pc0 = psxRegs.CP0.n.EPC;
+       k0 = interrupt_r26;
        if (psxRegs.CP0.n.Cause & 0x80000000) pc0 += 4;
 
        psxRegs.CP0.n.Status = (psxRegs.CP0.n.Status & 0xfffffff0) |
@@ -3190,6 +3193,7 @@ void psxBiosException() {
 
        switch (psxRegs.CP0.n.Cause & 0x3c) {
                case 0x00: // Interrupt
+                       interrupt_r26=psxRegs.CP0.n.EPC;
 #ifdef PSXCPU_LOG
 //                     PSXCPU_LOG("interrupt\n");
 #endif