writefsbyte-writefsdword-writefsqword-writefsword.md

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Learn more about: __writefsbyte, __writefsdword, __writefsqword, __writefsword	__writefsbyte, __writefsdword, __writefsqword, __writefsword	09/02/2019	__writefsword __writefsbyte __writefsqword __writefsdword	writefsbyte intrinsic __writefsword intrinsic writefsqword intrinsic writefsdword intrinsic __writefsdword intrinsic __writefsqword intrinsic __writefsbyte intrinsic writefsword intrinsic	23ac6e8e-bc91-4e90-a4c6-da02993637ad

__writefsbyte, __writefsdword, __writefsqword, __writefsword

Microsoft Specific

Write memory to a location specified by an offset relative to the beginning of the FS segment.

Syntax

void __writefsbyte(
   unsigned long Offset,
   unsigned char Data
);
void __writefsword(
   unsigned long Offset,
   unsigned short Data
);
void __writefsdword(
   unsigned long Offset,
   unsigned long Data
);
void __writefsqword(
   unsigned long Offset,
   unsigned __int64 Data
);

Parameters

Offset
[in] The offset from the beginning of FS to write to.

Data
[in] The value to write.

Requirements

Intrinsic	Architecture
__writefsbyte	x86
__writefsword	x86
__writefsdword	x86
__writefsqword	x86

Header file <intrin.h>

Remarks

These routines are available only as intrinsics.

END Microsoft Specific

See also

__readfsbyte, __readfsdword, __readfsqword, __readfsword
Compiler intrinsics