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psxbios: Support other syscalls
[pcsx_rearmed.git]
/
libpcsxcore
/
psxbios.c
diff --git
a/libpcsxcore/psxbios.c
b/libpcsxcore/psxbios.c
index
be3abb8
..
288e33b
100644
(file)
--- a/
libpcsxcore/psxbios.c
+++ b/
libpcsxcore/psxbios.c
@@
-630,6
+630,12
@@
void psxBios_strncmp() { // 0x18
void psxBios_strcpy() { // 0x19
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
void psxBios_strcpy() { // 0x19
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
+ if (a0 == 0 || a1 == 0)
+ {
+ v0 = 0;
+ pc0 = ra;
+ return;
+ }
while ((*p1++ = *p2++) != '\0');
v0 = a0; pc0 = ra;
while ((*p1++ = *p2++) != '\0');
v0 = a0; pc0 = ra;
@@
-638,7
+644,12
@@
void psxBios_strcpy() { // 0x19
void psxBios_strncpy() { // 0x1a
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
s32 n = a2, i;
void psxBios_strncpy() { // 0x1a
char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
s32 n = a2, i;
-
+ if (a0 == 0 || a1 == 0)
+ {
+ v0 = 0;
+ pc0 = ra;
+ return;
+ }
for (i = 0; i < n; i++) {
if ((*p1++ = *p2++) == '\0') {
while (++i < n) {
for (i = 0; i < n; i++) {
if ((*p1++ = *p2++) == '\0') {
while (++i < n) {
@@
-655,6
+666,11
@@
void psxBios_strncpy() { // 0x1a
void psxBios_strlen() { // 0x1b
char *p = (char *)Ra0;
v0 = 0;
void psxBios_strlen() { // 0x1b
char *p = (char *)Ra0;
v0 = 0;
+ if (a0 == 0)
+ {
+ pc0 = ra;
+ return;
+ }
while (*p++) v0++;
pc0 = ra;
}
while (*p++) v0++;
pc0 = ra;
}
@@
-3180,6
+3196,9
@@
void psxBiosException() {
case 2: // ExitCritical - enable irq's
psxRegs.CP0.n.Status |= 0x404;
break;
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;
}
pc0 = psxRegs.CP0.n.EPC + 4;