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40 lines
1005 B
40 lines
1005 B
/** @file
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AsmWriteDr5 function
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Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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/**
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Writes a value to Debug Register 5 (DR5).
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Writes and returns a new value to DR5. This function is only available on
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IA-32 and x64. This writes a 32-bit value on IA-32 and a 64-bit value on x64.
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@param Value The value to write to Dr5.
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@return The value written to Debug Register 5 (DR5).
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**/
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UINTN
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EFIAPI
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AsmWriteDr5 (
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IN UINTN Value
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)
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{
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_asm {
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mov eax, Value
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_emit 0x0f // mov dr5, eax
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_emit 0x23
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_emit 0xe8
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}
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}
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