1 ; Copyright (c) 2004, Intel Corporation. All rights reserved.<BR> 2 ; This program and the accompanying materials 3 ; are licensed and made available under the terms and conditions of the BSD License 4 ; which accompanies this distribution. The full text of the license may be found at 5 ; http://opensource.org/licenses/bsd-license.php 6 ; 7 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 8 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 9 ; 10 ; Module Name: 11 ; 12 ; ReadDr4.Asm 13 ; 14 ; Abstract: 15 ; 16 ; AsmReadDr4 function 17 ; 18 ; Notes: 19 ; 20 ;------------------------------------------------------------------------------ 21 22 .code 23 24 ;------------------------------------------------------------------------------ 25 ; UINTN 26 ; EFIAPI 27 ; AsmReadDr4 ( 28 ; VOID 29 ; ); 30 ;------------------------------------------------------------------------------ 31 AsmReadDr4 PROC 32 ; 33 ; There's no obvious reason to access this register, since it's aliased to 34 ; DR7 when DE=0 or an exception generated when DE=1 35 ; 36 DB 0fh, 21h, 0e0h 37 ret 38 AsmReadDr4 ENDP 39 40 END 41