win: Save contents of TEBs allowing !teb and !gle to work in windbg

util/win/process_structs.h

Index: util/win/process_structs.h
diff --git a/util/win/process_structs.h b/util/win/process_structs.h
index 79f6515259c4bb13c29564749bd329e2f3bfcf6e..f082d5a9cb43167c3d14d43be01ad2a4a4f19fb7 100644
--- a/util/win/process_structs.h
+++ b/util/win/process_structs.h
@@ -309,12 +309,22 @@ struct CLIENT_ID {
 };
 
 // This is a partial definition of the TEB, as we do not currently use many
-// fields of it. See http://www.nirsoft.net/kernel_struct/vista/TEB.html.
+// fields of it. See http://www.nirsoft.net/kernel_struct/vista/TEB.html, and
+// the (arch-specific) definition of _TEB in winternl.h.
 template <class Traits>
 struct TEB {
   NT_TIB<Traits> NtTib;
-  typename Traits::Pointer EnvironmentPointer;
+  typename Traits::Pointer ProcessEnvironmentBlock;
   CLIENT_ID<Traits> ClientId;
+  // Not identical to Reserved2 in winternl's _TEB because we define ClientId.

[Mark Mentovai, 2015/10/01 20:28:05]

Blank before this, and after RemainderOfReserved2.

[scottmg, 2015/10/01 21:01:07]

Done.

+  typename Traits::Pointer RemainderOfReserved2[397];
+  BYTE Reserved3[1952];
+  typename Traits::Pointer TlsSlots[64];
+  BYTE Reserved4[8];
+  typename Traits::Pointer Reserved5[26];
+  typename Traits::Pointer ReservedForOle;
+  typename Traits::Pointer Reserved6[4];
+  typename Traits::Pointer TlsExpansionSlots;
 };
 
 // See https://msdn.microsoft.com/en-us/library/gg750724.aspx.