DEBUG_REGISTER_DESCRIPTION structure

The DEBUG_REGISTER_DESCRIPTION structure is returned by GetDescription to describe a processor's register.

Syntax


typedef struct _DEBUG_REGISTER_DESCRIPTION {
  ULONG   Type;
  ULONG   Flags;
  ULONG   SubregMaster;
  ULONG   SubregLength;
  ULONG64 SubregMask;
  ULONG   SubregShift;
  ULONG   Reserved0;
} DEBUG_REGISTER_DESCRIPTION, *PDEBUG_REGISTER_DESCRIPTION;

Members

Type

The type of value that this register holds. The possible values are the same as for the Type field in the DEBUG_VALUE structure.

Flags

A bit field of flags for the register. Currently, the only bit that can be set is DEBUG_REGISTER_SUB_REGISTER, which indicates that this register is a subregister.

SubregMaster

The index of the register of which this register is a sub-register. This field is only used if the DEBUG_REGISTER_SUB_REGISTER bit is set in Flags; otherwise, it is set to zero.

SubregLength

The size, in bits, of this sub-register. This field is only used if the DEBUG_REGISTER_SUB_REGISTER bit is set in Flags; otherwise, it is set to zero.

SubregMask

The bit mask that converts the register specified in SubregMaster into this sub-register. This field is only used if the DEBUG_REGISTER_SUB_REGISTER bit is set in Flags; otherwise, it is set to zero.

SubregShift

The bit shift that converts the register specified in SubregMaster into this sub-register. This field is only used if the DEBUG_REGISTER_SUB_REGISTER bit is set in Flags; otherwise, it is set to zero.

Reserved0

Reserved for system use.

Remarks

If this register is a subregister, the value of the full register can be turned into the value of the sub-register by first shifting SubregShift bits to the right and then combining the result with SubregMask using the bitwise-AND operator. The size of the sub-register (SubregLength) is the number of bits set in SubregMask.

For general information about registers, see Registers.

Requirements

Header

DbgEng.h (include DbgEng.h)

 

 

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