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READ_REGISTER_BUFFER_UCHAR routine

The READ_REGISTER_BUFFER_UCHAR routine reads a number of bytes from the specified register address into a buffer.

Syntax


VOID READ_REGISTER_BUFFER_UCHAR(
  _In_   PUCHAR Register,
  _Out_  PUCHAR Buffer,
  _In_   ULONG Count
);

Parameters

Register [in]

Pointer to the register, which must be a mapped range in memory space.

Buffer [out]

Pointer to a buffer into which an array of UCHAR values is read.

Count [in]

Specifies the number of bytes to be read into the buffer.

Return value

None

Remarks

The size of the buffer must be large enough to contain at least the specified number of bytes.

Callers of READ_REGISTER_BUFFER_UCHAR can be running at any IRQL, assuming the Buffer is resident and the Register is resident, mapped device memory.

Requirements

Version

Available starting with Windows 2000.

Header

Wdm.h (include Wdm.h, Ntddk.h, or Ntifs.h)

Library

Ntoskrnl.lib

IRQL

Any level (see Remarks section)

 

 

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