Improve thread code

include/PSX/System/threads.hpp

@@ -1,52 +0,0 @@
-#pragma once
-#include "syscalls.hpp"
-
-namespace JabyEngine {
-    struct Thread {
-        static uintptr_t get_pic() {
-            return table_of_tables.processes->current_tcb->epc;
-        }
-
-        static constexpr uint32_t idx_from_handle(SysCall::ThreadHandle thread) {
-            return thread & 0xFFFF;
-        }
-
-        static void prepare_next(SysCall::ThreadHandle thread) {
-            table_of_tables.processes->current_tcb = &table_of_tables.threads[idx_from_handle(thread)];
-        }
-
-        static void execute_next() {
-            SysCall::ReturnFromException();
-        }
-
-        static void set_kernel_mode_for(SysCall::ThreadHandle handle) {
-            table_of_tables.threads[idx_from_handle(handle)].sr = 0x0;
-        }
-
-        static void set_user_mode_for(SysCall::ThreadHandle handle) {
-            table_of_tables.threads[idx_from_handle(handle)].sr = 0x40000404;
-        }
-    };
-
-    struct MainThread {
-        static uintptr_t get_pic() {
-            return table_of_tables.threads[0].epc;
-        }
-
-        static void prepare_if_main(SysCall::ThreadHandle handle) {
-            if(table_of_tables.processes->current_tcb == &table_of_tables.threads[0]) {
-                Thread::prepare_next(handle);
-            }
-        }
-
-        static void prepare_restore() {
-            Thread::prepare_next(0);
-        }
-
-        static void restore() {
-            SysCall::EnterCriticalSection();
-            MainThread::prepare_restore();
-            Thread::execute_next();
-        }
-    };
-}