[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