wip: eip saved after the interrupt

src/interrupt/irq.s

@@ -38,6 +38,10 @@ irq_common_stub:
     iret
 
 irq0:
+	push eax
+	mov eax, [esp + 4]
+	mov [eip_backup], eax
+	pop eax
 	push 0
 	push 32
 	jmp irq_common_stub

src/multitasking/scheduler.c

@@ -1,11 +1,13 @@
 #include "kprintf.h"
 #include "task.h"
+#include "time.h"
 
 struct task *current_task;
 
 void scheduler(void)
 {
 	kprintf("camille mon bebou\n");
+	sleep(1000);
 	if (!current_task)
 		return;
 	struct task *it = current_task;

src/multitasking/switch_to_task.s

@@ -34,4 +34,6 @@ switch_to_task:
 	pop ebp
 	pop ebx
 
-	ret // this will also change eip to the next task's instructions
+	push [eip_backup]
+
+	iretd // this will also change eip to the next task's instructions

src/multitasking/task.c

@@ -3,10 +3,7 @@
 #include "kpanic.h"
 #include "memory.h"
 
-static void set_eip(void (*fn)(void), struct task *task)
+uint32_t eip_backup;
-{
-	// TODO or not TODO
-}
 
 static struct task *create_task(uint8_t owner_id)
 {
@@ -30,11 +27,14 @@ void exec_fn(void (*fn)(void))
 	if (!new_task)
 		kpanic("failed to create new task");
 	new_task->status = RUN;
+	new_task->eip = (uint32_t *)fn;
 	new_task->next = current_task;
+	new_task->prev = new_task;
+	if (current_task) {
 		new_task->prev = current_task->prev;
 		current_task->prev = new_task;
+	}
 	current_task = new_task;
-	set_eip(fn, new_task);
 }
 
 /*