Add user_stack_size to Machine and use it for threads sp

src/kernel/exception.rs

@@ -3,7 +3,7 @@ use std::{cell::RefCell, rc::Rc};
 use crate::{simulator::{machine::{ExceptionType, Machine}, error::{MachineOk, MachineError}}};
 use crate::kernel::synch::{Lock, Semaphore};
 
-use super::{system::{System, self}, thread::Thread};
+use super::{system::System, thread::Thread};
 
 /// The halt system call. Stops Burritos.
 pub const SC_SHUTDOWN: u8 =	0;
@@ -282,7 +282,9 @@ fn sc_new_thread(machine: &mut Machine, system: &mut System) -> Result<MachineOk
     };
     let current_thread = current_thread.borrow_mut();
     if let Some(process) = current_thread.get_process_owner() {
-        system.get_thread_manager().start_thread(n_thread, Rc::clone(&process), func as u64, current_thread.thread_context.int_registers[2] as u64 + machine.page_size, args);
+        let sp_max = system.get_thread_manager().get_sp_max() + machine.user_stack_size;
+        system.get_thread_manager().set_sp_max(sp_max);
+        system.get_thread_manager().start_thread(n_thread, Rc::clone(&process), func as u64, sp_max, args);
         // TODO changé la valeur de sp quand on supportera les addresses virtuels
         machine.write_int_register(10, tid as i64);
         Ok(MachineOk::Ok)

src/kernel/thread_manager.rs

@@ -118,7 +118,8 @@ pub struct ThreadManager {
     /// List of objects created by the thread manager (such as Locks and Semaphores)
     obj_addrs: ObjAddr,
     /// If true, enables debug mode
-    debug: bool
+    debug: bool,
+    sp_max: u64,
 }
 
 impl ThreadManager {
@@ -130,7 +131,8 @@ impl ThreadManager {
             g_alive: List::default(),
             ready_list: List::default(),
             obj_addrs: ObjAddr::init(),
-            debug
+            debug,
+            sp_max: 0
         }
     }
 
@@ -423,6 +425,14 @@ impl ThreadManager {
         }
     }
 
+    pub fn get_sp_max(&self) -> u64 {
+        self.sp_max
+    }
+
+    pub fn set_sp_max(&mut self, sp_max: u64) {
+        self.sp_max = sp_max;
+    }
+
 }
 
 #[cfg(test)]