notaz.gp2x.de
/
pcsx_rearmed.git
/ blobdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
|
commitdiff
|
tree
raw
|
inline
| side by side
psxbios: Add checks for memmove.
[pcsx_rearmed.git]
/
libpcsxcore
/
psxbios.c
diff --git
a/libpcsxcore/psxbios.c
b/libpcsxcore/psxbios.c
index
c362a75
..
399df9a
100644
(file)
--- a/
libpcsxcore/psxbios.c
+++ b/
libpcsxcore/psxbios.c
@@
-788,22
+788,48
@@
void psxBios_bcmp() { // 0x29
void psxBios_memcpy() { // 0x2a
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
void psxBios_memcpy() { // 0x2a
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
- while ((s32)a2-- > 0) *p1++ = *p2++;
-
- v0 = a0; pc0 = ra;
+ s32 n=0;
+ v0 = a0;
+ if (a0 == 0 || a2 > 0x7FFFFFFF)
+ {
+ pc0 = ra;
+ return;
+ }
+ while ((s32)a2-- > 0) {
+ n++;
+ *p1++ = *p2++;
+ }
+ a2 = 0;
+ pc0 = ra;
}
void psxBios_memset() { // 0x2b
char *p = (char *)Ra0;
}
void psxBios_memset() { // 0x2b
char *p = (char *)Ra0;
+ v0 = a0;
+ if (a2 > 0x7FFFFFFF || a2 == 0)
+ {
+ v0 = 0;
+ pc0 = ra;
+ return;
+ }
+ if (a0 == 0)
+ {
+ pc0 = ra;
+ return;
+ }
while ((s32)a2-- > 0) *p++ = (char)a1;
while ((s32)a2-- > 0) *p++ = (char)a1;
-
a2 = 0;
v0 = a0; pc0 = ra;
}
void psxBios_memmove() { // 0x2c
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
a2 = 0;
v0 = a0; pc0 = ra;
}
void psxBios_memmove() { // 0x2c
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
-
+ v0 = a0;
+ if (a0 == 0 || a2 > 0x7FFFFFFF)
+ {
+ pc0 = ra;
+ return;
+ }
if (p2 <= p1 && p2 + a2 > p1) {
a2++; // BUG: copy one more byte here
p1 += a2;
if (p2 <= p1 && p2 + a2 > p1) {
a2++; // BUG: copy one more byte here
p1 += a2;
@@
-812,8
+838,7
@@
void psxBios_memmove() { // 0x2c
} else {
while ((s32)a2-- > 0) *p1++ = *p2++;
}
} else {
while ((s32)a2-- > 0) *p1++ = *p2++;
}
-
- v0 = a0; pc0 = ra;
+ pc0 = ra;
}
void psxBios_memcmp() { // 0x2d
}
void psxBios_memcmp() { // 0x2d