psxbios: Support other syscalls

[pcsx_rearmed.git] / libpcsxcore / psxbios.c

diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c
index 13cfe73..288e33b 100644 (file)
--- a/libpcsxcore/psxbios.c
+++ b/libpcsxcore/psxbios.c
@@ -666,6 +666,11 @@ void psxBios_strncpy() { // 0x1a
 void psxBios_strlen() { // 0x1b
        char *p = (char *)Ra0;
        v0 = 0;
+       if (a0 == 0)
+       {
+               pc0 = ra;
+               return;
+       }
        while (*p++) v0++;
        pc0 = ra;
 }
@@ -3191,6 +3196,9 @@ void psxBiosException() {
                                case 2: // ExitCritical - enable irq's
                                        psxRegs.CP0.n.Status |= 0x404; 
                                        break;
+                               /* Normally this should cover SYS(00h, SYS(04h but they don't do anything relevant so... */
+                               default:
+                                       break;
                        }
                        pc0 = psxRegs.CP0.n.EPC + 4;