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      1 ;------------------------------------------------------------------------------
      2 ;
      3 ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
      4 ; This program and the accompanying materials
      5 ; are licensed and made available under the terms and conditions of the BSD License
      6 ; which accompanies this distribution.  The full text of the license may be found at
      7 ; http://opensource.org/licenses/bsd-license.php.
      8 ;
      9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
     10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
     11 ;
     12 ; Module Name:
     13 ;
     14 ;   WriteDr4.Asm
     15 ;
     16 ; Abstract:
     17 ;
     18 ;   AsmWriteDr4 function
     19 ;
     20 ; Notes:
     21 ;
     22 ;------------------------------------------------------------------------------
     23 
     24     DEFAULT REL
     25     SECTION .text
     26 
     27 ;------------------------------------------------------------------------------
     28 ; UINTN
     29 ; EFIAPI
     30 ; AsmWriteDr4 (
     31 ;   IN UINTN Value
     32 ;   );
     33 ;------------------------------------------------------------------------------
     34 global ASM_PFX(AsmWriteDr4)
     35 ASM_PFX(AsmWriteDr4):
     36     ;
     37     ; There's no obvious reason to access this register, since it's aliased to
     38     ; DR6 when DE=0 or an exception generated when DE=1
     39     ;
     40     DB      0xf, 0x23, 0xe1
     41     mov     rax, rcx
     42     ret
     43 
     44