[navaraf] 17074: Don't save and restore previous mode in trap handlers. This allows us to call KeGetPreviousMode() from exception handlers and get the right value.

Don't save and restore previous mode in trap handlers. This allows us to
call KeGetPreviousMode() from exception handlers and get the right
value.
Modified: trunk/reactos/ntoskrnl/ke/i386/trap.s
  _____

Modified: trunk/reactos/ntoskrnl/ke/i386/trap.s
--- trunk/reactos/ntoskrnl/ke/i386/trap.s	2005-08-05 17:28:17 UTC
(rev 17073)
+++ trunk/reactos/ntoskrnl/ke/i386/trap.s	2005-08-05 18:26:43 UTC
(rev 17074)
@@ -45,13 +45,8 @@

popl	%edx
    popl	%ecx
    popl	%eax
-
-	/* Restore the old previous mode */
    popl	%ebx
-	cmpl	$0, %esi
-	je	.L7
-	movb	%bl, %ss:KTHREAD_PREVIOUS_MODE(%esi)
-.L7:
+
    /* Restore the old exception handler list */
    popl	%ebx
    movl	%ebx, %fs:KPCR_EXCEPTION_LIST
@@ -140,13 +135,6 @@
         /* Set the new previous mode based on the saved CS selector */
    movl	 KTRAP_FRAME_CS(%ebp), %eax
    andl     $0x0000FFFF, %eax
-	cmpl     $KERNEL_CS, %eax
-	jne      .L1
-	movb     $KernelMode, KTHREAD_PREVIOUS_MODE(%edi)
-	jmp      .L3
-.L1:
-	movb     $UserMode, KTHREAD_PREVIOUS_MODE(%edi)
-.L3:

/* Save the old trap frame. */
    movl	KTHREAD_TRAP_FRAME(%edi), %edx