diff options
| -rw-r--r-- | libpcsxcore/psxbios.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c index 67a01e5..4019234 100644 --- a/libpcsxcore/psxbios.c +++ b/libpcsxcore/psxbios.c @@ -739,15 +739,20 @@ void psxBios_tolower() { // 0x26 void psxBios_bcopy() { // 0x27 char *p1 = (char *)Ra1, *p2 = (char *)Ra0; + v0 = a0; + if (a0 == 0 || a2 > 0x7FFFFFFF) + { + pc0 = ra; + return; + } while ((s32)a2-- > 0) *p1++ = *p2++; - + a2 = 0; pc0 = ra; } void psxBios_bzero() { // 0x28 char *p = (char *)Ra0; while ((s32)a1-- > 0) *p++ = '\0'; - pc0 = ra; } |