wincap.h: add wincap member has_user_shstk

Indicate support of user mode hardware-enforced shadow stack

Signed-off-by: Brian Inglis <Brian.Inglis@Shaw.ca>

diff --git a/winsup/cygwin/local_includes/wincap.h b/winsup/cygwin/local_includes/wincap.h
index 29a7a63de7f6973f711b40b3c05b3ddee1c32b59..c14872787ca2e66b7d9318c63fdd7e14de5d3216 100644 (file)
--- a/winsup/cygwin/local_includes/wincap.h
+++ b/winsup/cygwin/local_includes/wincap.h
@@ -32,6 +32,7 @@ struct wincaps
     unsigned has_linux_tcp_keepalive_sockopts                  : 1;
     unsigned has_tcp_maxrtms                                   : 1;
     unsigned has_con_broken_tabs                               : 1;
+    unsigned has_user_shstk                                    : 1;
   };
 };
 
@@ -84,6 +85,7 @@ public:
   bool IMPLEMENT (has_linux_tcp_keepalive_sockopts)
   bool IMPLEMENT (has_tcp_maxrtms)
   bool IMPLEMENT (has_con_broken_tabs)
+  bool IMPLEMENT (has_user_shstk)
 
   void disable_case_sensitive_dirs ()
   {