gte: change gte irq workaround

This should be closer to what happens on the real thing.
Special thanks to Ryphecha for the idea.

diff --git a/libpcsxcore/r3000a.c b/libpcsxcore/r3000a.c
index 1e8d0b0..cccfa60 100644 (file)
--- a/libpcsxcore/r3000a.c
+++ b/libpcsxcore/r3000a.c
@@ -79,13 +79,13 @@ void psxShutdown() {
 }
 
 void psxException(u32 code, u32 bd) {
-       if (!Config.HLE && (((PSXMu32(psxRegs.pc) >> 24) & 0xfe) == 0x4a)) {
+       if (!Config.HLE && ((((psxRegs.code = PSXMu32(psxRegs.pc)) >> 24) & 0xfe) == 0x4a)) {
                // "hokuto no ken" / "Crash Bandicot 2" ...
                // BIOS does not allow to return to GTE instructions
                // (just skips it, supposedly because it's scheduled already)
-               // so we step over it with the interpreter
-               extern void execI();
-               execI();
+               // so we execute it here
+               extern void (*psxCP2[64])(void *cp2regs);
+               psxCP2[psxRegs.code & 0x3f](&psxRegs.CP2D);
        }
 
        // Set the Cause