X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=pcsx_rearmed.git;a=blobdiff_plain;f=libpcsxcore%2Fpsxbios.c;h=fbc00028b3d38b477158144f5e283a5cd2f2976b;hp=be3abb8cbdab88f3f639e4c08fe6db147a73f6f1;hb=f15146144475b363f46500c171ffd6555f585502;hpb=ba4ecb8c6e99104da806fa6455346f5a4890d1c4

diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c
index be3abb8c..fbc00028 100644
--- a/libpcsxcore/psxbios.c
+++ b/libpcsxcore/psxbios.c
@@ -322,9 +322,10 @@ static inline void LoadRegs() {
 	SysPrintf("read %d: %x,%x (%s)\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2, Mcd##mcd##Data + 128 * FDesc[1 + mcd].mcfile + 0xa); \
 	ptr = Mcd##mcd##Data + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
 	memcpy(Ra1, ptr, length); \
+	if (FDesc[1 + mcd].mode & 0x8000) { \
 	DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 	DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
-	if (FDesc[1 + mcd].mode & 0x8000) v0 = 0; \
+	v0 = 0; } \
 	else v0 = length; \
 	FDesc[1 + mcd].offset += v0; \
 }
@@ -334,10 +335,11 @@ static inline void LoadRegs() {
 	SysPrintf("write %d: %x,%x\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2); \
 	ptr = Mcd##mcd##Data + offset; \
 	memcpy(ptr, Ra1, length); \
+	FDesc[1 + mcd].offset += length; \
+	if (FDesc[1 + mcd].mode & 0x8000) { \
 	DeliverEvent(0x11, 0x2); /* 0xf0000011, 0x0004 */ \
 	DeliverEvent(0x81, 0x2); /* 0xf4000001, 0x0004 */ \
-	FDesc[1 + mcd].offset += length; \
-	if (FDesc[1 + mcd].mode & 0x8000) v0 = 0; \
+	v0 = 0; } \
 	else v0 = length; \
 }
 
@@ -630,6 +632,12 @@ void psxBios_strncmp() { // 0x18
 
 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;
@@ -638,7 +646,12 @@ void psxBios_strcpy() { // 0x19
 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) {
@@ -655,6 +668,11 @@ 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;
 }
@@ -1746,9 +1764,15 @@ void psxBios_TestEvent() { // 0b
 	ev   = a0 & 0xff;
 	spec = (a0 >> 8) & 0xff;
 
-	if (Event[ev][spec].status == EvStALREADY) {
-		Event[ev][spec].status = EvStACTIVE; v0 = 1;
-	} else v0 = 0;
+	if (Event[ev][spec].status == EvStALREADY) 
+	{
+		if (!(Event[ev][spec].mode == EvMdINTR)) Event[ev][spec].status = EvStACTIVE;
+		v0 = 1;
+	} 
+	else 
+	{
+		v0 = 0;
+	}
 
 #ifdef PSXBIOS_LOG
 	PSXBIOS_LOG("psxBios_%s %x,%x: %x\n", biosB0n[0x0b], ev, spec, v0);
@@ -2186,7 +2210,18 @@ void psxBios_puts() { // 3e/3f
 char ffile[64], *pfile;
 int nfile;
 
+
+/* To avoid any issues with different behaviour when using the libc's own strlen instead.
+ * We want to mimic the PSX's behaviour in this case for bufile. */
+static size_t strlen_internal(char* p) 
+{
+	size_t size_of_array = 0;
+	while (*p++) size_of_array++;
+	return size_of_array;
+}
+
 #define bufile(mcd) { \
+	size_t size_of_name = strlen_internal(dir->name); \
 	while (nfile < 16) { \
 		int match=1; \
  \
@@ -2197,8 +2232,8 @@ int nfile;
 		if (!ptr[0xa]) continue; \
 		ptr+= 0xa; \
 		if (pfile[0] == 0) { \
-			strncpy(dir->name, ptr, sizeof(dir->name)); \
-			dir->name[sizeof(dir->name) - 1] = '\0'; \
+			strncpy(dir->name, ptr, sizeof(dir->name) - 1); \
+			if (size_of_name < sizeof(dir->name)) dir->name[size_of_name] = '\0'; \
 		} else for (i=0; i<20; i++) { \
 			if (pfile[i] == ptr[i]) { \
 								dir->name[i] = ptr[i]; continue; } \
@@ -3180,6 +3215,9 @@ 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;