base code to call a syscall from ARM11 appcore

src/core/hle.cpp

@@ -13,21 +13,45 @@ namespace HLE {
 
 static std::vector<ModuleDef> g_module_db;
 
+const FunctionDef* GetSyscallInfo(u32 opcode) {
+    u32 func_num = opcode & 0xFFFFFF; // 8 bits
+    if (func_num > 0xFF) {
+        ERROR_LOG(HLE,"Unknown syscall: 0x%02X", func_num); 
+        return NULL;
+    }
+    return &g_module_db[0].func_table[func_num];
+}
+
+void CallSyscall(u32 opcode) {
+    const FunctionDef *info = GetSyscallInfo(opcode);
+
+    if (!info) {
+        return;
+    }
+    if (info->func) {
+        info->func();
+    } else {
+        ERROR_LOG(HLE, "Unimplemented HLE function %s", info->name);
+    }
+}
+
 void RegisterModule(std::string name, int num_functions, const FunctionDef* func_table) {
     ModuleDef module = {name, num_functions, func_table};
     g_module_db.push_back(module);
 }
 
 void RegisterAllModules() {
-    Register_SysCall();
+    Register_Syscall();
 }
 
 void Init() {
     RegisterAllModules();
+    NOTICE_LOG(HLE, "initialized OK");
 }
 
 void Shutdown() {
-	g_module_db.clear();
+    g_module_db.clear();
+    NOTICE_LOG(HLE, "shutdown OK");
 }
 
 } // namespace