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The latest version of this topic can be found at __writegsbyte, __writegsdword, __writegsqword, __writegsword.
Microsoft Specific**
Write memory to a location specified by an offset relative to the beginning of the GS segment.
Syntax
void __writegsbyte(
unsigned long Offset,
unsigned char Data
);
void __writegsword(
unsigned long Offset,
unsigned short Data
);
void __writegsdword(
unsigned long Offset,
unsigned long Data
);
void __writegsqword(
unsigned long Offset,
unsigned __int64 Data
);
Parameters
[in] Offset
The offset from the beginning of GS to write to.
[in] Data
The value to write.
Requirements
| Intrinsic | Architecture |
|---|---|
__writegsbyte |
x64 |
__writegsdword |
x64 |
__writegsqword |
x64 |
__writegsword |
x64 |
Header file <intrin.h>
Remarks
These intrinsics are available in kernel mode only, and these routines are only available as intrinsics.
END Microsoft Specific
See Also
__readgsbyte, __readgsdword, __readgsqword, __readgsword
Compiler Intrinsics