[Kernel] Implement ArbitrationType::DecrementAndWaitIfLess

src/core/kernel/address_arbiter.cpp

@@ -58,7 +58,7 @@ void Kernel::arbitrateAddress() {
 	regs[0] = SVCResult::Success;
 
 	switch (static_cast<ArbitrationType>(type)) {
-		// Puts this thread to sleep if word < value until another thread signals the address with the type SIGNAL
+		// Puts this thread to sleep if word < value until another thread arbitrates the address using SIGNAL
 		case ArbitrationType::WaitIfLess: {
 			s32 word = static_cast<s32>(mem.read32(address)); // Yes this is meant to be signed 
 			if (word < value) {
@@ -67,6 +67,17 @@ void Kernel::arbitrateAddress() {
 			break;
 		}
 
+		// Puts this thread to sleep if word < value until another thread arbitrates the address using SIGNAL
+		// If the thread is put to sleep, the arbiter address is decremented
+		case ArbitrationType::DecrementAndWaitIfLess: {
+			s32 word = static_cast<s32>(mem.read32(address)); // Yes this is meant to be signed 
+			if (word < value) {
+				mem.write32(address, word - 1);
+				sleepThreadOnArbiter(address);
+			}
+			break;
+		}
+
 		case ArbitrationType::Signal:
 			signalArbiter(address, value);
 			break;

src/core/kernel/events.cpp

@@ -73,8 +73,7 @@ void Kernel::waitSynchronizationN() {
 	logSVC("WaitSynchronizationN (STUBBED)\n");
 	regs[0] = SVCResult::Success;
 
-	if (currentThreadIndex == 1) {
+	printf("Hacky WaitSync stuff for OoT triggered!!!\n");
-		printf("WaitSynchN OoT hack triggered\n");
+	threads[currentThreadIndex].status = ThreadStatus::Ready;
-		switchThread(0);
+	switchThread(rand() % threadCount);
-	}
 }

src/main.cpp

@@ -9,7 +9,7 @@ int main (int argc, char *argv[]) {
 
     emu.initGraphicsContext();
 
-    auto romPath = std::filesystem::current_path() / (argc > 1 ? argv[1] : "SimplerTri.elf");
+    auto romPath = std::filesystem::current_path() / (argc > 1 ? argv[1] : "OoT.3ds");
     if (!emu.loadROM(romPath)) {
         // For some reason just .c_str() doesn't show the proper path
         Helpers::panic("Failed to load ROM file: %s", romPath.string().c_str());