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WindowsNT
Journeyman III

Callgate in x64

Run privileged code with the driver aid

Hello there.

My aim is to communicate with a driver that would create a segment memory with a specified protection level, so my user-level application can copy some protected code there and execute it in that protection level. In x86 this is possible with the aid of a callgate.

Can it be done in x64 ? If one has resources on this, please post.

Best Regards.

 

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avk
Adept III

Although I'm not a specialist in such a delicate matter, I'd like to suggest you to read the AMD Architecture Programmer's Manual Volume #2 "System Programming". If this information about an x64-callgates is exist, it is in that document.

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