1 files changed, 37 insertions, 0 deletions

diff --git a/src/lib/libssl/hidden/ssl_namespace.h b/src/lib/libssl/hidden/ssl_namespace.h
new file mode 100644
index 0000000000..803f3e66be
--- /dev/null
+++ b/src/lib/libssl/hidden/ssl_namespace.h
@@ -0,0 +1,37 @@
+/*      $OpenBSD: ssl_namespace.h,v 1.1 2022/11/11 11:25:18 beck Exp $  */
+/*
+ * Copyright (c) 2016 Philip Guenther <guenther@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LIBSSL_SSL_NAMESPACE_H_
+#define _LIBSSL_SSL_NAMESPACE_H_
+
+/*
+ * If marked as 'used', then internal calls use the name with prefix "_lssl_"
+ * and we alias that to the normal name.
+ */
+
+#ifdef LIBRESSL_NAMESPACE
+#define LSSL_UNUSED(x)          typeof(x) x __attribute__((deprecated))
+#define LSSL_USED(x)            __attribute__((visibility("hidden")))   \
+                                typeof(x) x asm("_lssl_"#x)
+#define LSSL_ALIAS(x)           asm(".global "#x"; "#x" = _lssl_"#x);
+#else
+#define LSSL_UNUSED(x)
+#define LSSL_USED(x)
+#define LSSL_ALIAS(x)
+#endif
+
+#endif  /* _LIBSSL_SSL_NAMESPACE_H_ */