[Kernel] CreateThread stub

src/core/kernel/threads.cpp

@@ -0,0 +1,33 @@
+#include "kernel.hpp"
+#include "resource_limits.hpp"
+
+// Internal OS function to spawn a thread
+Handle Kernel::makeThread(u32 entrypoint, u32 initialSP, u32 priority, u32 id) {
+	if (threadCount >= appResourceLimits.maxThreads) {
+		Helpers::panic("Overflowed the number of threads");
+	}
+	threadCount++;
+
+	// TODO: Actually create the thread
+	return makeObject(KernelObjectType::Thread);
+}
+
+// Result CreateThread(s32 priority, ThreadFunc entrypoint, u32 arg, u32 stacktop, s32 threadPriority, s32 processorID)	
+void Kernel::createThread() {
+	u32 priority = regs[0];
+	u32 entrypoint = regs[1];
+	u32 initialSP = regs[3] & ~7; // SP is force-aligned to 8 bytes
+	u32 id = regs[4];
+
+	printf("CreateThread(entry = %08X, stacktop = %08X, priority = %X, processor ID = %d)\n", entrypoint,
+		initialSP, priority, id);
+
+	if (!(priority <= 0x3F)) [[unlikely]] {
+		Helpers::panic("Created thread with bad priority value %X", priority);
+		regs[0] = SVCResult::BadThreadPriority;
+		return;
+	}
+
+	regs[0] = SVCResult::Success;
+	regs[1] = makeThread(entrypoint, initialSP, priority, id);
+}