implement prover stdin reading

include/keyboard.h

@@ -3,7 +3,14 @@
 
 #include "../include/utils.h"
 #include "../include/stdio.h"
+#include <stdbool.h>
+
+#define STDIN_BUFFER_SIZE 4096
+extern char stdin_buffer[STDIN_BUFFER_SIZE];
+extern int stdin_pos;
+extern bool stdin_has_line;
 
 void handle_keyboard();
+void init_keyboard();
 
 #endif

include/task.h

@@ -27,6 +27,12 @@ typedef enum TaskState
     Terminated
 } TaskState;
 
+enum WaitingReason {
+    NONE,
+    TIMER,
+    STDIN,
+};
+
 typedef void (*EntryPoint)(void);
 
 // Структура контекста для переключения между процессами
@@ -71,6 +77,7 @@ typedef struct Process
 
     uint32_t kstack_top;
     size_t wake_up_time;//wake up time in ticks of the processor, gets set by nanosleep syscall
+    enum WaitingReason waiting_reason;
 } Process;
 
 extern Process* current;