PR_SHADOW_STACK_SUPPORTED_STATUS_MASK
if (user_gcs.features_enabled & ~PR_SHADOW_STACK_SUPPORTED_STATUS_MASK)
if (enabled & ~PR_SHADOW_STACK_SUPPORTED_STATUS_MASK)
if (arg & ~PR_SHADOW_STACK_SUPPORTED_STATUS_MASK)
if (status & ~PR_SHADOW_STACK_SUPPORTED_STATUS_MASK)