title	__writedr | Microsoft Docs
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__writedr

Writes the specified value to the specified debug register.

Syntax

void __writedr(unsigned DebugRegister, unsigned DebugValue);  
void __writedr(unsigned DebugRegister, unsigned __int64 DebugValue);  

Parameters

[in] DebugRegister
A number from 0 through 7 that identifies the debug register.

[in] DebugValue
A value to write to the debug register.

Remarks

These intrinsics are available only in kernel mode, and the routines are available only as intrinsics.

Requirements

Intrinsic	Architecture
__writedr	x86, [!INCLUDEvcprx64]

Header file <intrin.h>

END Microsoft Specific

See Also

Compiler Intrinsics
__readdr