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psxbios: Add checks for bcopy
[pcsx_rearmed.git]
/
libpcsxcore
/
psxbios.c
diff --git
a/libpcsxcore/psxbios.c
b/libpcsxcore/psxbios.c
index
010a229
..
4019234
100644
(file)
--- a/
libpcsxcore/psxbios.c
+++ b/
libpcsxcore/psxbios.c
@@
-610,7
+610,13
@@
void psxBios_strlen() { // 0x1b
void psxBios_index() { // 0x1c
char *p = (char *)Ra0;
void psxBios_index() { // 0x1c
char *p = (char *)Ra0;
-
+ if (a0 == 0)
+ {
+ v0 = 0;
+ pc0 = ra;
+ return;
+ }
+
do {
if (*p == a1) {
v0 = a0 + (p - (char *)Ra0);
do {
if (*p == a1) {
v0 = a0 + (p - (char *)Ra0);
@@
-626,7
+632,11
@@
void psxBios_rindex() { // 0x1d
char *p = (char *)Ra0;
v0 = 0;
char *p = (char *)Ra0;
v0 = 0;
-
+ if (a0 == 0)
+ {
+ pc0 = ra;
+ return;
+ }
do {
if (*p == a1)
v0 = a0 + (p - (char *)Ra0);
do {
if (*p == a1)
v0 = a0 + (p - (char *)Ra0);
@@
-729,15
+739,20
@@
void psxBios_tolower() { // 0x26
void psxBios_bcopy() { // 0x27
char *p1 = (char *)Ra1, *p2 = (char *)Ra0;
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++;
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;
}
void psxBios_bzero() { // 0x28
char *p = (char *)Ra0;
while ((s32)a1-- > 0) *p++ = '\0';
-
pc0 = ra;
}
pc0 = ra;
}