1 files changed, 24 insertions, 0 deletions
diff --git a/lib/libmd/aarch64/sha1dispatch.c b/lib/libmd/aarch64/sha1dispatch.c
new file mode 100644
index 000000000000..e34bf0a1a344
--- /dev/null
+++ b/lib/libmd/aarch64/sha1dispatch.c
@@ -0,0 +1,24 @@
+/*-
+ * Copyright (c) 2024 Robert Clausecker <fuz@freebsd.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <machine/ifunc.h>
+#include <sha.h>
+#include <sys/auxv.h>
+
+extern void _libmd_sha1block_scalar(SHA1_CTX *, const void *, size_t);
+extern void _libmd_sha1block_sha1(SHA1_CTX *, const void *, size_t);
+
+DEFINE_IFUNC(, void, sha1_block, (SHA1_CTX *, const void *, size_t))
+{
+	unsigned long hwcap = 0;
+
+	elf_aux_info(AT_HWCAP, &hwcap, sizeof(hwcap));
+
+	if (hwcap & HWCAP_SHA1)
+		return (_libmd_sha1block_sha1);
+	else
+		return (_libmd_sha1block_scalar);
+}