Provide a replacement assembly implementation for SHA-512 on amd64.

Replace the perlasm generated SHA-512 assembly with a more readable
version and the same C wrapper introduced for SHA-256. As for SHA-256,
on a modern CPU the performance is largely the same.

ok tb@

1 files changed, 26 insertions, 0 deletions

diff --git a/src/lib/libcrypto/sha/sha512_amd64.c b/src/lib/libcrypto/sha/sha512_amd64.c
new file mode 100644
index 0000000000..0b54243020
--- /dev/null
+++ b/src/lib/libcrypto/sha/sha512_amd64.c
@@ -0,0 +1,26 @@
+/* $OpenBSD: sha512_amd64.c,v 1.1 2024/11/16 14:56:39 jsing Exp $ */
+/*
+ * Copyright (c) 2024 Joel Sing <jsing@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.
+ */
+
+#include <openssl/sha.h>
+
+void sha512_block_generic(SHA512_CTX *ctx, const void *in, size_t num);
+
+void
+sha512_block_data_order(SHA512_CTX *ctx, const void *in, size_t num)
+{
+        sha512_block_generic(ctx, in, num);
+}