1 files changed, 4 insertions, 10 deletions
diff --git a/kernel/asm.s b/kernel/asm.s
index 6d35334..fc36171 100644
--- a/kernel/asm.s
+++ b/kernel/asm.s
@@ -11,6 +11,7 @@ extern save_state
 switch_to:
   push ebp
   mov ebp, esp
+  push ebx
   ; abort if we're switching to the current task
   mov ebx, [ctask]
   cmp ebx, [ebp+12]
@@ -18,16 +19,6 @@ switch_to:
   pop ebp
   ret
 .skip:
-  ; clear the busy flag in the current TSS
-  mov eax, 0
-  str ax
-  add ax, gdt+5
-  mov byte [eax], 0x89
-  ; set the current TSS to null so it won't be overwritten by the switch
-  mov ax, 0
-  ltr ax
-  ; copy the saved state into the previous TSS
-  call save_state
   ; update ctask and ctaskn
   mov ebx, [ebp+12]
   mov [ctask], ebx
@@ -39,6 +30,9 @@ switch_to:
   shl ebx, 3
   mov [.tmp+4], bx
   jmp far [.tmp]
+  pop ebx
+  pop ebp
+  ret
 .tmp:
   dq 0