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__readgsbyte, __readgsdword, __readgsqword, __readgsword

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The latest version of this topic can be found at __readgsbyte, __readgsdword, __readgsqword, __readgsword.

Microsoft Specific**

Read memory from a location specified by an offset relative to the beginning of the GS segment.

Syntax

unsigned char __readgsbyte(   
   unsigned long Offset   
);  
unsigned short __readgsword(   
   unsigned long Offset   
);  
unsigned long __readgsdword(   
   unsigned long Offset  
);  
unsigned __int64 __readgsqword(   
   unsigned long Offset   
);

Parameters

[in] Offset
The offset from the beginning of GS to read from.

Return Value

The memory contents of the byte, word, double word, or quadword (as indicated by the name of the function called) at the location GS:[``Offset``].

Requirements

Intrinsic Architecture
__readgsbyte x64
__readgsdword x64
__readgsqword x64
__readgsword x64

Header file <intrin.h>

Remarks

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

END Microsoft Specific

See Also

__writegsbyte, __writegsdword, __writegsqword, __writegsword
Compiler Intrinsics