proc_quit () and proc_test () syscalls

kernel/syscall/syscall.h

@@ -0,0 +1,12 @@
+#ifndef _KERNEL_SYSCALL_SYSCALL_H
+#define _KERNEL_SYSCALL_SYSCALL_H
+
+#include <libk/std.h>
+#include <proc/proc.h>
+
+typedef int (*syscall_handler_func_t) (struct proc* proc, uintptr_t a1, uintptr_t a2, uintptr_t a3,
+                                       uintptr_t a4, uintptr_t a5, uintptr_t a6);
+
+syscall_handler_func_t syscall_find_handler (int syscall_num);
+
+#endif // _KERNEL_SYSCALL_SYSCALL_H