From 57ce3c792d1ddca22f9fecdb4fbe614a6e7c8d88 Mon Sep 17 00:00:00 2001
From: Starnakin <camille@chauvet.pro>
Date: Tue, 21 Jan 2025 10:41:27 +0100
Subject: [PATCH] wip: multitasking: change eip but not working

---
 src/interrupt/irq.s               | 2 +-
 src/multitasking/switch_to_task.s | 8 +++++---
 src/multitasking/task.c           | 4 +++-
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/src/interrupt/irq.s b/src/interrupt/irq.s
index 6575edd..c320370 100644
--- a/src/interrupt/irq.s
+++ b/src/interrupt/irq.s
@@ -40,7 +40,7 @@ irq_common_stub:
 irq0:
 	push eax
 	mov eax, [esp + 4]
-	mov [eip_backup], eax
+	mov [esp_backup], esp
 	pop eax
 	push 0
 	push 32
diff --git a/src/multitasking/switch_to_task.s b/src/multitasking/switch_to_task.s
index 5512de4..3194d3c 100644
--- a/src/multitasking/switch_to_task.s
+++ b/src/multitasking/switch_to_task.s
@@ -10,8 +10,9 @@ switch_to_task:
 	push esi
 
 	// save the current stack pointer to the old stack
-	mov [current_task], esp
-	mov edi, [eip_backup]
+	mov [current_task+0], esp
+	
+	mov edi, [esp_backup] // get eip
 	mov [current_task+16], edi	// save instruction before Interrupt
 
 	// stack pointer + the 4 regs pushed
@@ -31,7 +32,8 @@ switch_to_task:
 //	mov cr3, ebx
 
 	// TODO replace the eip store in stack by the [current_task+16](current_task->eip)  
-
+	mov edi, [current_task+16]
+	mov [esp_backup], edi
 .END:
 	pop esi
 	pop edi
diff --git a/src/multitasking/task.c b/src/multitasking/task.c
index 4a9453a..04a8c24 100644
--- a/src/multitasking/task.c
+++ b/src/multitasking/task.c
@@ -5,7 +5,9 @@
 #include "kprintf.h"
 #include "memory.h"
 
-uint32_t eip_backup;
+#include <stdint.h>
+
+uint32_t esp_backup;
 
 static struct task *create_task(uint8_t owner_id)
 {