[PATCH] D20346: [stack-protection] Add support for MSVC buffer security check

[Etienne Bergeron via llvm-commits]

etienneb added a comment.

I'm gonna take a look to WinEHPrepare.

But, there is a link between EH and GS.

  struct _EH4_SCOPETABLE {
       DWORD GSCookieOffset;
       DWORD GSCookieXOROffset;
       DWORD EHCookieOffset;
       DWORD EHCookieXOROffset;
       _EH4_SCOPETABLE_RECORD ScopeRecord[1];
   };

When using version 4 of the exception handler, the GS cookie can be present.

  GSCookieOffset = -2 means that GS cookie is not used. EH cookie is always present. Offsets are ebp relative.


http://reviews.llvm.org/D20346