From e59104ffb55abe522c82d658f1f285149cca2cb1 Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Sun, 2 May 2021 14:46:18 +0200
Subject: Debug GDT enable multitasking

---
 src/core/idt.cc | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

(limited to 'src/core/idt.cc')

diff --git a/src/core/idt.cc b/src/core/idt.cc
index 495b332..b8b57c7 100644
--- a/src/core/idt.cc
+++ b/src/core/idt.cc
@@ -6,7 +6,7 @@
 
 u32 idt[IDT_MAX_ENTRIES][4] __attribute__((aligned(4096)));;
 IDT_REGISTER IDTR;
-extern u64 INT_DEFAULT,INT_0,INT_14,INT_KBD,INT_CLK;
+extern u64 INT_DEFAULT,INT_0,INT_10,INT_14,INT_KBD,INT_CLK,INT_SYSCALL;
 
 void idt_enable_interrupt(void){
     IDTR.base=((u64)idt);
@@ -28,6 +28,10 @@ void idt_enable_interrupt(void){
             d.offset=(u64)&INT_14;
             idt_write_descriptor(d, i);
         }
+        else if(i==10){
+            d.offset=(u64)&INT_10;
+            idt_write_descriptor(d, i);
+        }
         else if(i==60){ // Keyboard
             d.offset=(u64)&INT_KBD;
             idt_write_descriptor(d, i);
@@ -36,12 +40,20 @@ void idt_enable_interrupt(void){
             d.offset=(u64)&INT_CLK;
             idt_write_descriptor(d, i);
         }
+        else if(i==0x30){ // Syscall
+            IDT_DESCRIPTOR d2;
+            d2.ign=0;
+            d2.ist=0;
+            d2.selector=0x08;
+            d2.options=IDT_OPT_P|IDT_OPT_PRVL_3|IDT_OPT_TYPE_INT;
+            d2.offset=(u64)&INT_SYSCALL;
+            idt_write_descriptor(d2, i);
+        }
         else {
             d.offset=(u64)&INT_DEFAULT;
             idt_write_descriptor(d, i);
         }
-    }
-   
+    }  
     // Enable interrupts
     asm(
         "lidt (IDTR)  \n\t"
-- 
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