建议你在msdn中搜索fs，一定可以找到很多信息。我给你贴一些：
In Win32, the FS register points to the Thread Environment Block (TEB). A data structure unique for each thread, the TEB contains values that the system uses to control the thread. At offset 0 in the TEB is a pointer to the first node in the structured exception handling chain. When you see code that uses FS:[0], it's usually setting up or tearing down a try block.FS:
16-bit. Under Win32, the FS register points to a data structure with information pertaining to the current thread. FS is a segment register (segment registers are beyond the scope of this discussion). Intel CPUs have six segment registers, but the Operating system sets the M up and maintains the M. Win32 compilers only need to explicitly refer to the FS segment register, which is used for things like structured exception handling and thread local storage.
In Win32, the FS register points to the Thread Environment Block (TEB). A data structure unique for each thread, the TEB contains values that the system uses to control the thread. At offset 0 in the TEB is a pointer to the first node in the structured exception handling chain. When you see code that uses FS:[0], it's usually setting up or tearing down a try block.FS:
16-bit. Under Win32, the FS register points to a data structure with information pertaining to the current thread. FS is a segment register (segment registers are beyond the scope of this discussion). Intel CPUs have six segment registers, but the Operating system sets the M up and maintains the M. Win32 compilers only need to explicitly refer to the FS segment register, which is used for things like structured exception handling and thread local storage.
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