From a91035abf4513ee68d4aa501c1ed87aea1d883a0 Mon Sep 17 00:00:00 2001
From: wheremyfoodat <gponiris2004@gmail.com>
Date: Sun, 18 Sep 2022 18:17:41 +0300
Subject: [PATCH] Initial impl for createEvent SVC

---
 CMakeLists.txt                  |  1 +
 include/kernel/kernel.hpp       |  4 +++-
 include/kernel/kernel_types.hpp |  3 ++-
 src/core/kernel/events.cpp      | 21 +++++++++++++++++++++
 src/core/kernel/kernel.cpp      |  1 +
 src/core/kernel/threads.cpp     |  0
 6 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 src/core/kernel/events.cpp
 create mode 100644 src/core/kernel/threads.cpp

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e32c2ca1..73a5b94e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -47,6 +47,7 @@ endif()
 set(SOURCE_FILES src/main.cpp src/emulator.cpp src/core/CPU/cpu_dynarmic.cpp src/core/memory.cpp src/core/elf.cpp)
 set(KERNEL_SOURCE_FILES src/core/kernel/kernel.cpp src/core/kernel/resource_limits.cpp
                         src/core/kernel/memory_management.cpp src/core/kernel/ports.cpp
+                        src/core/kernel/events.cpp src/core/kernel/threads.cpp
 )
 set(SERVICE_SOURCE_FILES src/core/services/service_manager.cpp src/core/services/apt.cpp src/core/services/hid.cpp
                          src/core/services/fs.cpp src/core/services/gsp_gpu.cpp src/core/services/gsp_lcd.cpp
diff --git a/include/kernel/kernel.hpp b/include/kernel/kernel.hpp
index d8c70be6..cbb9e293 100644
--- a/include/kernel/kernel.hpp
+++ b/include/kernel/kernel.hpp
@@ -49,6 +49,7 @@ class Kernel {
 		return handleCounter++;
 	}
 
+	Handle makeEvent(u32 resetType);
 	Handle makeProcess();
 	Handle makePort(const char* name);
 	Handle makeSession(Handle port);
@@ -63,8 +64,9 @@ class Kernel {
 	std::string getProcessName(u32 pid);
 
 	// SVC implementations
-	void controlMemory();
 	void createAddressArbiter();
+	void createEvent();
+	void controlMemory();
 	void getResourceLimit();
 	void getResourceLimitLimitValues();
 	void getResourceLimitCurrentValues();
diff --git a/include/kernel/kernel_types.hpp b/include/kernel/kernel_types.hpp
index 11aa415d..f7c36fae 100644
--- a/include/kernel/kernel_types.hpp
+++ b/include/kernel/kernel_types.hpp
@@ -15,7 +15,7 @@ namespace SVCResult {
 }
 
 enum class KernelObjectType : u8 {
-    Port, Process, ResourceLimit, Session, Dummy
+    Event, Port, Process, ResourceLimit, Session, Dummy
 };
 
 enum class ResourceLimitCategory : int {
@@ -68,6 +68,7 @@ struct SessionData {
 
 static const char* kernelObjectTypeToString(KernelObjectType t) {
     switch (t) {
+        case KernelObjectType::Event: return "event";
         case KernelObjectType::Port: return "port";
         case KernelObjectType::Process: return "process";
         case KernelObjectType::ResourceLimit: return "resource limit";
diff --git a/src/core/kernel/events.cpp b/src/core/kernel/events.cpp
new file mode 100644
index 00000000..ed87c314
--- /dev/null
+++ b/src/core/kernel/events.cpp
@@ -0,0 +1,21 @@
+#include "kernel.hpp"
+
+// TODO: What the fuck is resetType meant to be?
+Handle Kernel::makeEvent(u32 resetType) {
+	Handle ret = makeObject(KernelObjectType::Event);
+	return ret;
+}
+
+// Result CreateEvent(Handle* event, ResetType resetType)
+// TODO: Just like getResourceLimit this seems to output the handle in r1 even though 3dbrew doesn't mention this
+// Should the handle be written both in memory and r1, or just r1?
+void Kernel::createEvent() {
+	const u32 outPointer = regs[0];
+	const u32 resetType = regs[1];
+	printf("CreateEvent(handle pointer = %08X, resetType = %d)\n", outPointer, resetType);
+
+	Handle handle = makeEvent(resetType);
+	regs[0] = SVCResult::Success;
+	regs[1] = handle;
+	mem.write32(outPointer, handle);
+}
\ No newline at end of file
diff --git a/src/core/kernel/kernel.cpp b/src/core/kernel/kernel.cpp
index b40a06e3..0614e169 100644
--- a/src/core/kernel/kernel.cpp
+++ b/src/core/kernel/kernel.cpp
@@ -5,6 +5,7 @@
 void Kernel::serviceSVC(u32 svc) {
 	switch (svc) {
 		case 0x01: controlMemory(); break;
+		case 0x17: createEvent(); break;
 		case 0x21: createAddressArbiter(); break;
 		case 0x23: svcCloseHandle(); break;
 		case 0x2D: connectToPort(); break;
diff --git a/src/core/kernel/threads.cpp b/src/core/kernel/threads.cpp
new file mode 100644
index 00000000..e69de29b