[PATCH] Support a protection scheme which reset the GS selector - v2

Sergey Guralnik serhio at etersoft.ru
Fri Feb 8 06:21:21 CST 2013

On 2013-02-07 17:00, Alessandro Pignotti wrote:
>+    opcode=(unsigned char*)context->Eip;
>+    if (*opcode==0x65 && /* GS segment instruction prefix */
>+        context->SegGs!=ntdll_get_thread_data()->gs)

Segment-override prefix may be preceded by repeat or operand-size 
override prefixes.
So instruction that refers to GS-segment doesn't always starts with 


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