Question

What is the FS segment register used for in Windows?

a.

As a pointer to the currently active thread-specific data structures

b.

To point to the exception handler list

c.

To store the return address of a function call

d.

To access kernel-level functions

Posted under Reverse Engineering

Answer: (a).As a pointer to the currently active thread-specific data structures Explanation:On IA-32 processors, Windows uses the FS segment register as a pointer to the currently active thread-specific data structures.

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