From 8238898ddfa6cd38d80274ab298aa838b85d501a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Niels=20M=C3=B6ller?= <nisse@lysator.liu.se>
Date: Thu, 11 Aug 2022 11:04:20 +0200
Subject: [PATCH] Delete all md5 assembly code.

---
 ChangeLog               |   7 ++
 Makefile.in             |   2 +-
 configure.ac            |   2 +-
 md5-compress.c          | 174 -------------------------------------
 md5.c                   | 108 +++++++++++++++++++++++
 x86/md5-compress.asm    | 187 ----------------------------------------
 x86_64/md5-compress.asm | 176 -------------------------------------
 7 files changed, 117 insertions(+), 539 deletions(-)
 delete mode 100644 md5-compress.c
 delete mode 100644 x86/md5-compress.asm
 delete mode 100644 x86_64/md5-compress.asm

diff --git a/ChangeLog b/ChangeLog
index 5b0feac7..268cd48d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2023-12-08  Niels Möller  <nisse@lysator.liu.se>
 
+	Delete all md5 assembly code.
+	* md5.c (nettle_md5_compress): Move function and related macros
+	here, from...
+	* md5-compress.c: ... deleted file.
+	* x86/md5-compress.asm: Deleted file.
+	* x86_64/md5-compress.asm: Deleted file.
+
 	* configure.ac: When checking for openssl, use AC_LINK_IFELSE to
 	check if needed functions really are available. Just using
 	AC_CHECK_LIB to check for, e.g., EVP_RSA_gen, doesn't work, since
diff --git a/Makefile.in b/Makefile.in
index 905ebd6b..bde6cf2a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -129,7 +129,7 @@ nettle_SOURCES = aes-decrypt-internal.c aes-decrypt.c aes-decrypt-table.c \
 		 hmac-sha512-meta.c hmac-streebog-meta.c hmac-sm3-meta.c \
 		 knuth-lfib.c hkdf.c \
 		 md2.c md2-meta.c md4.c md4-meta.c \
-		 md5.c md5-compress.c md5-compat.c md5-meta.c \
+		 md5.c md5-compat.c md5-meta.c \
 		 memeql-sec.c memxor.c memxor3.c \
 		 nettle-lookup-hash.c \
 		 nettle-meta-aeads.c nettle-meta-armors.c \
diff --git a/configure.ac b/configure.ac
index e820d5c3..fd533664 100644
--- a/configure.ac
+++ b/configure.ac
@@ -585,7 +585,7 @@ asm_replace_list="aes-encrypt-internal.asm aes-decrypt-internal.asm \
 		cbc-aes128-encrypt.asm cbc-aes192-encrypt.asm \
 		cbc-aes256-encrypt.asm \
 		camellia-crypt-internal.asm \
-		md5-compress.asm memxor.asm memxor3.asm \
+		memxor.asm memxor3.asm \
 		ghash-set-key.asm ghash-update.asm \
 		poly1305-internal.asm \
 		chacha-core-internal.asm \
diff --git a/md5-compress.c b/md5-compress.c
deleted file mode 100644
index 6fe3256e..00000000
--- a/md5-compress.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* md5-compress.c
-
-   The compression function for the md5 hash function.
-
-   Copyright (C) 2001, 2005 Niels Möller
-
-   This file is part of GNU Nettle.
-
-   GNU Nettle is free software: you can redistribute it and/or
-   modify it under the terms of either:
-
-     * the GNU Lesser General Public License as published by the Free
-       Software Foundation; either version 3 of the License, or (at your
-       option) any later version.
-
-   or
-
-     * the GNU General Public License as published by the Free
-       Software Foundation; either version 2 of the License, or (at your
-       option) any later version.
-
-   or both in parallel, as here.
-
-   GNU Nettle is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
-
-   You should have received copies of the GNU General Public License and
-   the GNU Lesser General Public License along with this program.  If
-   not, see http://www.gnu.org/licenses/.
-*/
-
-/* Based on public domain code hacked by Colin Plumb, Andrew Kuchling, and
- * Niels Möller. */
-
-
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#ifndef MD5_DEBUG
-# define MD5_DEBUG 0
-#endif
-
-#if MD5_DEBUG
-# include <stdio.h>
-# define DEBUG(i) \
-  fprintf(stderr, "%2d: %8x %8x %8x %8x\n", i, a, b, c, d)
-#else
-# define DEBUG(i)
-#endif
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "md5.h"
-
-#include "macros.h"
-
-/* A block, treated as a sequence of 32-bit words. */
-#define MD5_DATA_LENGTH 16
-
-/* MD5 functions */
-
-#define F1(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
-#define F2(x, y, z) F1((z), (x), (y))
-#define F3(x, y, z) ((x) ^ (y) ^ (z))
-#define F4(x, y, z) ((y) ^ ((x) | ~(z)))
-
-#define ROUND(f, w, x, y, z, data, s) \
-( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
-
-/* Perform the MD5 transformation on one full block of 16 32-bit
- * words.
- *
- * Compresses 20 (_MD5_DIGEST_LENGTH + MD5_DATA_LENGTH) words into 4
- * (_MD5_DIGEST_LENGTH) words. */
-
-void
-nettle_md5_compress(uint32_t *digest, const uint8_t *input)
-{
-  uint32_t data[MD5_DATA_LENGTH];
-  uint32_t a, b, c, d;
-  unsigned i;
-
-  for (i = 0; i < MD5_DATA_LENGTH; i++, input += 4)
-    data[i] = LE_READ_UINT32(input);
-
-  a = digest[0];
-  b = digest[1];
-  c = digest[2];
-  d = digest[3];
-
-  DEBUG(-1);
-  ROUND(F1, a, b, c, d, data[ 0] + 0xd76aa478, 7); DEBUG(0);
-  ROUND(F1, d, a, b, c, data[ 1] + 0xe8c7b756, 12); DEBUG(1);
-  ROUND(F1, c, d, a, b, data[ 2] + 0x242070db, 17);
-  ROUND(F1, b, c, d, a, data[ 3] + 0xc1bdceee, 22);
-  ROUND(F1, a, b, c, d, data[ 4] + 0xf57c0faf, 7);
-  ROUND(F1, d, a, b, c, data[ 5] + 0x4787c62a, 12);
-  ROUND(F1, c, d, a, b, data[ 6] + 0xa8304613, 17);
-  ROUND(F1, b, c, d, a, data[ 7] + 0xfd469501, 22);
-  ROUND(F1, a, b, c, d, data[ 8] + 0x698098d8, 7);
-  ROUND(F1, d, a, b, c, data[ 9] + 0x8b44f7af, 12);
-  ROUND(F1, c, d, a, b, data[10] + 0xffff5bb1, 17);
-  ROUND(F1, b, c, d, a, data[11] + 0x895cd7be, 22);
-  ROUND(F1, a, b, c, d, data[12] + 0x6b901122, 7);
-  ROUND(F1, d, a, b, c, data[13] + 0xfd987193, 12);
-  ROUND(F1, c, d, a, b, data[14] + 0xa679438e, 17);
-  ROUND(F1, b, c, d, a, data[15] + 0x49b40821, 22); DEBUG(15);
-
-  ROUND(F2, a, b, c, d, data[ 1] + 0xf61e2562, 5); DEBUG(16);
-  ROUND(F2, d, a, b, c, data[ 6] + 0xc040b340, 9); DEBUG(17);
-  ROUND(F2, c, d, a, b, data[11] + 0x265e5a51, 14);
-  ROUND(F2, b, c, d, a, data[ 0] + 0xe9b6c7aa, 20);
-  ROUND(F2, a, b, c, d, data[ 5] + 0xd62f105d, 5);
-  ROUND(F2, d, a, b, c, data[10] + 0x02441453, 9);
-  ROUND(F2, c, d, a, b, data[15] + 0xd8a1e681, 14);
-  ROUND(F2, b, c, d, a, data[ 4] + 0xe7d3fbc8, 20);
-  ROUND(F2, a, b, c, d, data[ 9] + 0x21e1cde6, 5);
-  ROUND(F2, d, a, b, c, data[14] + 0xc33707d6, 9);
-  ROUND(F2, c, d, a, b, data[ 3] + 0xf4d50d87, 14);
-  ROUND(F2, b, c, d, a, data[ 8] + 0x455a14ed, 20);
-  ROUND(F2, a, b, c, d, data[13] + 0xa9e3e905, 5);
-  ROUND(F2, d, a, b, c, data[ 2] + 0xfcefa3f8, 9);
-  ROUND(F2, c, d, a, b, data[ 7] + 0x676f02d9, 14);
-  ROUND(F2, b, c, d, a, data[12] + 0x8d2a4c8a, 20); DEBUG(31);
-
-  ROUND(F3, a, b, c, d, data[ 5] + 0xfffa3942, 4); DEBUG(32);
-  ROUND(F3, d, a, b, c, data[ 8] + 0x8771f681, 11); DEBUG(33);
-  ROUND(F3, c, d, a, b, data[11] + 0x6d9d6122, 16);
-  ROUND(F3, b, c, d, a, data[14] + 0xfde5380c, 23);
-  ROUND(F3, a, b, c, d, data[ 1] + 0xa4beea44, 4);
-  ROUND(F3, d, a, b, c, data[ 4] + 0x4bdecfa9, 11);
-  ROUND(F3, c, d, a, b, data[ 7] + 0xf6bb4b60, 16);
-  ROUND(F3, b, c, d, a, data[10] + 0xbebfbc70, 23);
-  ROUND(F3, a, b, c, d, data[13] + 0x289b7ec6, 4);
-  ROUND(F3, d, a, b, c, data[ 0] + 0xeaa127fa, 11);
-  ROUND(F3, c, d, a, b, data[ 3] + 0xd4ef3085, 16);
-  ROUND(F3, b, c, d, a, data[ 6] + 0x04881d05, 23);
-  ROUND(F3, a, b, c, d, data[ 9] + 0xd9d4d039, 4);
-  ROUND(F3, d, a, b, c, data[12] + 0xe6db99e5, 11);
-  ROUND(F3, c, d, a, b, data[15] + 0x1fa27cf8, 16);
-  ROUND(F3, b, c, d, a, data[ 2] + 0xc4ac5665, 23); DEBUG(47);
-
-  ROUND(F4, a, b, c, d, data[ 0] + 0xf4292244, 6); DEBUG(48);
-  ROUND(F4, d, a, b, c, data[ 7] + 0x432aff97, 10); DEBUG(49);
-  ROUND(F4, c, d, a, b, data[14] + 0xab9423a7, 15);
-  ROUND(F4, b, c, d, a, data[ 5] + 0xfc93a039, 21);
-  ROUND(F4, a, b, c, d, data[12] + 0x655b59c3, 6);
-  ROUND(F4, d, a, b, c, data[ 3] + 0x8f0ccc92, 10);
-  ROUND(F4, c, d, a, b, data[10] + 0xffeff47d, 15);
-  ROUND(F4, b, c, d, a, data[ 1] + 0x85845dd1, 21);
-  ROUND(F4, a, b, c, d, data[ 8] + 0x6fa87e4f, 6);
-  ROUND(F4, d, a, b, c, data[15] + 0xfe2ce6e0, 10);
-  ROUND(F4, c, d, a, b, data[ 6] + 0xa3014314, 15);
-  ROUND(F4, b, c, d, a, data[13] + 0x4e0811a1, 21);
-  ROUND(F4, a, b, c, d, data[ 4] + 0xf7537e82, 6);
-  ROUND(F4, d, a, b, c, data[11] + 0xbd3af235, 10);
-  ROUND(F4, c, d, a, b, data[ 2] + 0x2ad7d2bb, 15);
-  ROUND(F4, b, c, d, a, data[ 9] + 0xeb86d391, 21); DEBUG(63);
-
-  digest[0] += a;
-  digest[1] += b;
-  digest[2] += c;
-  digest[3] += d;
-#if MD5_DEBUG
-  fprintf(stderr, "99: %8x %8x %8x %8x\n",
-	  digest[0], digest[1], digest[2], digest[3]);
-#endif
-  
-}
diff --git a/md5.c b/md5.c
index cc009b4a..57cca826 100644
--- a/md5.c
+++ b/md5.c
@@ -91,3 +91,111 @@ md5_digest(struct md5_ctx *ctx,
   _nettle_write_le32(length, digest, ctx->state);
   md5_init(ctx);
 }
+
+/* A block, treated as a sequence of 32-bit words. */
+#define MD5_DATA_LENGTH 16
+
+/* MD5 functions */
+
+#define F1(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
+#define F2(x, y, z) F1((z), (x), (y))
+#define F3(x, y, z) ((x) ^ (y) ^ (z))
+#define F4(x, y, z) ((y) ^ ((x) | ~(z)))
+
+#define ROUND(f, w, x, y, z, data, s) \
+( w += f(x, y, z) + data,  w = w<<s | w>>(32-s),  w += x )
+
+/* Perform the MD5 transformation on one full block of 16 32-bit
+ * words.
+ *
+ * Compresses 20 (_MD5_DIGEST_LENGTH + MD5_DATA_LENGTH) words into 4
+ * (_MD5_DIGEST_LENGTH) words. */
+
+void
+nettle_md5_compress(uint32_t *digest, const uint8_t *input)
+{
+  uint32_t data[MD5_DATA_LENGTH];
+  uint32_t a, b, c, d;
+  unsigned i;
+
+  for (i = 0; i < MD5_DATA_LENGTH; i++, input += 4)
+    data[i] = LE_READ_UINT32(input);
+
+  a = digest[0];
+  b = digest[1];
+  c = digest[2];
+  d = digest[3];
+
+  ROUND(F1, a, b, c, d, data[ 0] + 0xd76aa478, 7);
+  ROUND(F1, d, a, b, c, data[ 1] + 0xe8c7b756, 12);
+  ROUND(F1, c, d, a, b, data[ 2] + 0x242070db, 17);
+  ROUND(F1, b, c, d, a, data[ 3] + 0xc1bdceee, 22);
+  ROUND(F1, a, b, c, d, data[ 4] + 0xf57c0faf, 7);
+  ROUND(F1, d, a, b, c, data[ 5] + 0x4787c62a, 12);
+  ROUND(F1, c, d, a, b, data[ 6] + 0xa8304613, 17);
+  ROUND(F1, b, c, d, a, data[ 7] + 0xfd469501, 22);
+  ROUND(F1, a, b, c, d, data[ 8] + 0x698098d8, 7);
+  ROUND(F1, d, a, b, c, data[ 9] + 0x8b44f7af, 12);
+  ROUND(F1, c, d, a, b, data[10] + 0xffff5bb1, 17);
+  ROUND(F1, b, c, d, a, data[11] + 0x895cd7be, 22);
+  ROUND(F1, a, b, c, d, data[12] + 0x6b901122, 7);
+  ROUND(F1, d, a, b, c, data[13] + 0xfd987193, 12);
+  ROUND(F1, c, d, a, b, data[14] + 0xa679438e, 17);
+  ROUND(F1, b, c, d, a, data[15] + 0x49b40821, 22);
+
+  ROUND(F2, a, b, c, d, data[ 1] + 0xf61e2562, 5);
+  ROUND(F2, d, a, b, c, data[ 6] + 0xc040b340, 9);
+  ROUND(F2, c, d, a, b, data[11] + 0x265e5a51, 14);
+  ROUND(F2, b, c, d, a, data[ 0] + 0xe9b6c7aa, 20);
+  ROUND(F2, a, b, c, d, data[ 5] + 0xd62f105d, 5);
+  ROUND(F2, d, a, b, c, data[10] + 0x02441453, 9);
+  ROUND(F2, c, d, a, b, data[15] + 0xd8a1e681, 14);
+  ROUND(F2, b, c, d, a, data[ 4] + 0xe7d3fbc8, 20);
+  ROUND(F2, a, b, c, d, data[ 9] + 0x21e1cde6, 5);
+  ROUND(F2, d, a, b, c, data[14] + 0xc33707d6, 9);
+  ROUND(F2, c, d, a, b, data[ 3] + 0xf4d50d87, 14);
+  ROUND(F2, b, c, d, a, data[ 8] + 0x455a14ed, 20);
+  ROUND(F2, a, b, c, d, data[13] + 0xa9e3e905, 5);
+  ROUND(F2, d, a, b, c, data[ 2] + 0xfcefa3f8, 9);
+  ROUND(F2, c, d, a, b, data[ 7] + 0x676f02d9, 14);
+  ROUND(F2, b, c, d, a, data[12] + 0x8d2a4c8a, 20);
+
+  ROUND(F3, a, b, c, d, data[ 5] + 0xfffa3942, 4);
+  ROUND(F3, d, a, b, c, data[ 8] + 0x8771f681, 11);
+  ROUND(F3, c, d, a, b, data[11] + 0x6d9d6122, 16);
+  ROUND(F3, b, c, d, a, data[14] + 0xfde5380c, 23);
+  ROUND(F3, a, b, c, d, data[ 1] + 0xa4beea44, 4);
+  ROUND(F3, d, a, b, c, data[ 4] + 0x4bdecfa9, 11);
+  ROUND(F3, c, d, a, b, data[ 7] + 0xf6bb4b60, 16);
+  ROUND(F3, b, c, d, a, data[10] + 0xbebfbc70, 23);
+  ROUND(F3, a, b, c, d, data[13] + 0x289b7ec6, 4);
+  ROUND(F3, d, a, b, c, data[ 0] + 0xeaa127fa, 11);
+  ROUND(F3, c, d, a, b, data[ 3] + 0xd4ef3085, 16);
+  ROUND(F3, b, c, d, a, data[ 6] + 0x04881d05, 23);
+  ROUND(F3, a, b, c, d, data[ 9] + 0xd9d4d039, 4);
+  ROUND(F3, d, a, b, c, data[12] + 0xe6db99e5, 11);
+  ROUND(F3, c, d, a, b, data[15] + 0x1fa27cf8, 16);
+  ROUND(F3, b, c, d, a, data[ 2] + 0xc4ac5665, 23);
+
+  ROUND(F4, a, b, c, d, data[ 0] + 0xf4292244, 6);
+  ROUND(F4, d, a, b, c, data[ 7] + 0x432aff97, 10);
+  ROUND(F4, c, d, a, b, data[14] + 0xab9423a7, 15);
+  ROUND(F4, b, c, d, a, data[ 5] + 0xfc93a039, 21);
+  ROUND(F4, a, b, c, d, data[12] + 0x655b59c3, 6);
+  ROUND(F4, d, a, b, c, data[ 3] + 0x8f0ccc92, 10);
+  ROUND(F4, c, d, a, b, data[10] + 0xffeff47d, 15);
+  ROUND(F4, b, c, d, a, data[ 1] + 0x85845dd1, 21);
+  ROUND(F4, a, b, c, d, data[ 8] + 0x6fa87e4f, 6);
+  ROUND(F4, d, a, b, c, data[15] + 0xfe2ce6e0, 10);
+  ROUND(F4, c, d, a, b, data[ 6] + 0xa3014314, 15);
+  ROUND(F4, b, c, d, a, data[13] + 0x4e0811a1, 21);
+  ROUND(F4, a, b, c, d, data[ 4] + 0xf7537e82, 6);
+  ROUND(F4, d, a, b, c, data[11] + 0xbd3af235, 10);
+  ROUND(F4, c, d, a, b, data[ 2] + 0x2ad7d2bb, 15);
+  ROUND(F4, b, c, d, a, data[ 9] + 0xeb86d391, 21);
+
+  digest[0] += a;
+  digest[1] += b;
+  digest[2] += c;
+  digest[3] += d;
+}
diff --git a/x86/md5-compress.asm b/x86/md5-compress.asm
deleted file mode 100644
index 7420671d..00000000
--- a/x86/md5-compress.asm
+++ /dev/null
@@ -1,187 +0,0 @@
-C x86/md5-compress.asm
-
-ifelse(`
-   Copyright (C) 2005, Niels Möller
-
-   This file is part of GNU Nettle.
-
-   GNU Nettle is free software: you can redistribute it and/or
-   modify it under the terms of either:
-
-     * the GNU Lesser General Public License as published by the Free
-       Software Foundation; either version 3 of the License, or (at your
-       option) any later version.
-
-   or
-
-     * the GNU General Public License as published by the Free
-       Software Foundation; either version 2 of the License, or (at your
-       option) any later version.
-
-   or both in parallel, as here.
-
-   GNU Nettle is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
-
-   You should have received copies of the GNU General Public License and
-   the GNU Lesser General Public License along with this program.  If
-   not, see http://www.gnu.org/licenses/.
-')
-
-C Register usage
-define(`SA',`%eax')
-define(`SB',`%ebx')
-define(`SC',`%ecx')
-define(`SD',`%edx')
-define(`TMP',`%ebp')
-define(`INPUT',`%esi')
-
-C %edi is unused
-
-C F1(x,y,z) = (z ^ (x & (y ^ z)))
-define(`F1', `
-	movl	$3, TMP
-	xorl	$2, TMP
-	andl	$1, TMP
-	xorl	$3, TMP')
-
-define(`F2',`F1($3, $1, $2)')
-
-C F3(x,y,z) = x ^ y ^ z
-define(`F3',`
-	movl	$1, TMP
-	xorl	$2, TMP
-	xorl	$3, TMP')
-
-C F4(x,y,z) = y ^ (x | ~z)
-define(`F4',`
-	movl	$3, TMP
-	notl	TMP
-	orl	$1, TMP
-	xorl	$2, TMP')
-
-define(`REF',`OFFSET($1)(INPUT)')
-	
-C ROUND(f, w, x, y, z, k, data, s):
-C	w += f(x,y,z) + data + k
-C	w <<< s
-C	w += x
-define(`ROUND',`
-	addl	$7, $2
-	$1($3, $4, $5)
-	addl	$6, $2
-	addl	TMP, $2
-	roll	`$'$8, $2
-	addl	$3, $2')
-
-	.file "md5-compress.asm"
-
-	C nettle_md5_compress(uint32_t *state, uint8_t *data)
-	
-	.text
-	ALIGN(16)
-PROLOGUE(nettle_md5_compress)
-	C save all registers that need to be saved
-
-				C  24(%esp)  input
-				C  20(%esp)  state
-				C  16(%esp)  Return address
-	pushl	%ebx		C  12(%esp)
-	pushl	%ebp		C   8(%esp)
-	pushl	%esi		C   4(%esp)
-	pushl	%edi		C    (%esp)
-
-	C load the state vector
-	movl	20(%esp),TMP
-	movl	(TMP),   SA
-	movl	4(TMP),  SB
-	movl	8(TMP),  SC
-	movl	12(TMP), SD
-
-	C Pointer to source data.
-	C Note that if unaligned, we suffer unaligned accesses
-	movl	24(%esp), INPUT
-
-	ROUND(`F1', SA, SB, SC, SD, REF( 0), $0xd76aa478, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF( 1), $0xe8c7b756, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF( 2), $0x242070db, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF( 3), $0xc1bdceee, 22)
-	ROUND(`F1', SA, SB, SC, SD, REF( 4), $0xf57c0faf, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF( 5), $0x4787c62a, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF( 6), $0xa8304613, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF( 7), $0xfd469501, 22)
-	ROUND(`F1', SA, SB, SC, SD, REF( 8), $0x698098d8, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF( 9), $0x8b44f7af, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF(10), $0xffff5bb1, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF(11), $0x895cd7be, 22)
-	ROUND(`F1', SA, SB, SC, SD, REF(12), $0x6b901122, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF(13), $0xfd987193, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF(14), $0xa679438e, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF(15), $0x49b40821, 22)
-	
-        ROUND(`F2', SA, SB, SC, SD, REF( 1), $0xf61e2562, 5)
-        ROUND(`F2', SD, SA, SB, SC, REF( 6), $0xc040b340, 9)
-        ROUND(`F2', SC, SD, SA, SB, REF(11), $0x265e5a51, 14)
-        ROUND(`F2', SB, SC, SD, SA, REF( 0), $0xe9b6c7aa, 20)
-        ROUND(`F2', SA, SB, SC, SD, REF( 5), $0xd62f105d, 5)
-        ROUND(`F2', SD, SA, SB, SC, REF(10), $0x02441453, 9)
-        ROUND(`F2', SC, SD, SA, SB, REF(15), $0xd8a1e681, 14)
-        ROUND(`F2', SB, SC, SD, SA, REF( 4), $0xe7d3fbc8, 20)
-        ROUND(`F2', SA, SB, SC, SD, REF( 9), $0x21e1cde6, 5)
-        ROUND(`F2', SD, SA, SB, SC, REF(14), $0xc33707d6, 9)
-        ROUND(`F2', SC, SD, SA, SB, REF( 3), $0xf4d50d87, 14)
-        ROUND(`F2', SB, SC, SD, SA, REF( 8), $0x455a14ed, 20)
-        ROUND(`F2', SA, SB, SC, SD, REF(13), $0xa9e3e905, 5)
-        ROUND(`F2', SD, SA, SB, SC, REF( 2), $0xfcefa3f8, 9)
-        ROUND(`F2', SC, SD, SA, SB, REF( 7), $0x676f02d9, 14)
-        ROUND(`F2', SB, SC, SD, SA, REF(12), $0x8d2a4c8a, 20)
-
-        ROUND(`F3', SA, SB, SC, SD, REF( 5), $0xfffa3942, 4)
-        ROUND(`F3', SD, SA, SB, SC, REF( 8), $0x8771f681, 11)
-        ROUND(`F3', SC, SD, SA, SB, REF(11), $0x6d9d6122, 16)
-        ROUND(`F3', SB, SC, SD, SA, REF(14), $0xfde5380c, 23)
-        ROUND(`F3', SA, SB, SC, SD, REF( 1), $0xa4beea44, 4)
-        ROUND(`F3', SD, SA, SB, SC, REF( 4), $0x4bdecfa9, 11)
-        ROUND(`F3', SC, SD, SA, SB, REF( 7), $0xf6bb4b60, 16)
-        ROUND(`F3', SB, SC, SD, SA, REF(10), $0xbebfbc70, 23)
-        ROUND(`F3', SA, SB, SC, SD, REF(13), $0x289b7ec6, 4)
-        ROUND(`F3', SD, SA, SB, SC, REF( 0), $0xeaa127fa, 11)
-        ROUND(`F3', SC, SD, SA, SB, REF( 3), $0xd4ef3085, 16)
-        ROUND(`F3', SB, SC, SD, SA, REF( 6), $0x04881d05, 23)
-        ROUND(`F3', SA, SB, SC, SD, REF( 9), $0xd9d4d039, 4)
-        ROUND(`F3', SD, SA, SB, SC, REF(12), $0xe6db99e5, 11)
-        ROUND(`F3', SC, SD, SA, SB, REF(15), $0x1fa27cf8, 16)
-        ROUND(`F3', SB, SC, SD, SA, REF( 2), $0xc4ac5665, 23)
-
-        ROUND(`F4', SA, SB, SC, SD, REF( 0), $0xf4292244, 6)
-        ROUND(`F4', SD, SA, SB, SC, REF( 7), $0x432aff97, 10)
-        ROUND(`F4', SC, SD, SA, SB, REF(14), $0xab9423a7, 15)
-        ROUND(`F4', SB, SC, SD, SA, REF( 5), $0xfc93a039, 21)
-        ROUND(`F4', SA, SB, SC, SD, REF(12), $0x655b59c3, 6)
-        ROUND(`F4', SD, SA, SB, SC, REF( 3), $0x8f0ccc92, 10)
-        ROUND(`F4', SC, SD, SA, SB, REF(10), $0xffeff47d, 15)
-        ROUND(`F4', SB, SC, SD, SA, REF( 1), $0x85845dd1, 21)
-        ROUND(`F4', SA, SB, SC, SD, REF( 8), $0x6fa87e4f, 6)
-        ROUND(`F4', SD, SA, SB, SC, REF(15), $0xfe2ce6e0, 10)
-        ROUND(`F4', SC, SD, SA, SB, REF( 6), $0xa3014314, 15)
-        ROUND(`F4', SB, SC, SD, SA, REF(13), $0x4e0811a1, 21)
-        ROUND(`F4', SA, SB, SC, SD, REF( 4), $0xf7537e82, 6)
-        ROUND(`F4', SD, SA, SB, SC, REF(11), $0xbd3af235, 10)
-        ROUND(`F4', SC, SD, SA, SB, REF( 2), $0x2ad7d2bb, 15)
-        ROUND(`F4', SB, SC, SD, SA, REF( 9), $0xeb86d391, 21)
-	
-	C Update the state vector
-	movl	20(%esp),TMP
-	addl	SA, (TMP) 
-	addl	SB, 4(TMP) 
-	addl	SC, 8(TMP) 
-	addl	SD, 12(TMP) 
-
-	popl	%edi
-	popl	%esi
-	popl	%ebp
-	popl	%ebx
-	ret
-EPILOGUE(nettle_md5_compress)
diff --git a/x86_64/md5-compress.asm b/x86_64/md5-compress.asm
deleted file mode 100644
index defce60f..00000000
--- a/x86_64/md5-compress.asm
+++ /dev/null
@@ -1,176 +0,0 @@
-C x86_64/md5-compress.asm
-
-ifelse(`
-   Copyright (C) 2005, 2013 Niels Möller
-
-   This file is part of GNU Nettle.
-
-   GNU Nettle is free software: you can redistribute it and/or
-   modify it under the terms of either:
-
-     * the GNU Lesser General Public License as published by the Free
-       Software Foundation; either version 3 of the License, or (at your
-       option) any later version.
-
-   or
-
-     * the GNU General Public License as published by the Free
-       Software Foundation; either version 2 of the License, or (at your
-       option) any later version.
-
-   or both in parallel, as here.
-
-   GNU Nettle is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   General Public License for more details.
-
-   You should have received copies of the GNU General Public License and
-   the GNU Lesser General Public License along with this program.  If
-   not, see http://www.gnu.org/licenses/.
-')
-
-C Registers:
-
-define(`STATE', `%rdi')
-define(`INPUT', `%rsi')
-define(`SA',`%rax')
-define(`SB',`%rbx')
-define(`SC',`%rcx')
-define(`SD',`%rbp')
-define(`TMP', `%r8')
-
-C F1(x,y,z) = (z ^ (x & (y ^ z)))
-define(`F1', `
-	movl	XREG($3), XREG(TMP)
-	xorl	XREG($2), XREG(TMP)
-	andl	XREG($1), XREG(TMP)
-	xorl	XREG($3), XREG(TMP)')
-
-define(`F2',`F1($3, $1, $2)')
-
-C F3(x,y,z) = x ^ y ^ z
-define(`F3',`
-	movl	XREG($1), XREG(TMP)
-	xorl	XREG($2), XREG(TMP)
-	xorl	XREG($3), XREG(TMP)')
-
-C F4(x,y,z) = y ^ (x | ~z)
-define(`F4',`
-	movl	XREG($3), XREG(TMP)
-	notl	XREG(TMP)
-	orl	XREG($1), XREG(TMP)
-	xorl	XREG($2), XREG(TMP)')
-
-C Index to 4*i, or to the empty string if zero
-define(`REF',`ifelse($1,0,,eval(4*$1))(INPUT)')
-
-C ROUND(f, w, x, y, z, k, data, s):
-C	w += f(x,y,z) + data + k
-C	w <<< s
-C	w += x
-define(`ROUND',`
-	addl	`$'$7, XREG($2)
-	$1($3, $4, $5)
-	addl	$6, XREG($2)
-	addl	XREG(TMP), XREG($2)
-	roll	`$'$8, XREG($2)
-	addl	XREG($3), XREG($2)')
-
-	.file "md5-compress.asm"
-
-	C nettle_md5_compress(uint32_t *state, uint8_t *input)
-	.text
-	ALIGN(16)
-PROLOGUE(nettle_md5_compress)
-	W64_ENTRY(2,0)
-	C save all registers that need to be saved
-	push	%rbp
-	push	%rbx
-
-	C load the state vector
-	movl	(STATE),   XREG(SA)
-	movl	4(STATE),  XREG(SB)
-	movl	8(STATE),  XREG(SC)
-	movl	12(STATE), XREG(SD)
-
-	ROUND(`F1', SA, SB, SC, SD, REF( 0), 0xd76aa478, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF( 1), 0xe8c7b756, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF( 2), 0x242070db, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF( 3), 0xc1bdceee, 22)
-	ROUND(`F1', SA, SB, SC, SD, REF( 4), 0xf57c0faf, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF( 5), 0x4787c62a, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF( 6), 0xa8304613, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF( 7), 0xfd469501, 22)
-	ROUND(`F1', SA, SB, SC, SD, REF( 8), 0x698098d8, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF( 9), 0x8b44f7af, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF(10), 0xffff5bb1, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF(11), 0x895cd7be, 22)
-	ROUND(`F1', SA, SB, SC, SD, REF(12), 0x6b901122, 7)
-	ROUND(`F1', SD, SA, SB, SC, REF(13), 0xfd987193, 12)
-	ROUND(`F1', SC, SD, SA, SB, REF(14), 0xa679438e, 17)
-	ROUND(`F1', SB, SC, SD, SA, REF(15), 0x49b40821, 22)
-
-	ROUND(`F2', SA, SB, SC, SD, REF( 1), 0xf61e2562, 5)
-	ROUND(`F2', SD, SA, SB, SC, REF( 6), 0xc040b340, 9)
-	ROUND(`F2', SC, SD, SA, SB, REF(11), 0x265e5a51, 14)
-	ROUND(`F2', SB, SC, SD, SA, REF( 0), 0xe9b6c7aa, 20)
-	ROUND(`F2', SA, SB, SC, SD, REF( 5), 0xd62f105d, 5)
-	ROUND(`F2', SD, SA, SB, SC, REF(10), 0x02441453, 9)
-	ROUND(`F2', SC, SD, SA, SB, REF(15), 0xd8a1e681, 14)
-	ROUND(`F2', SB, SC, SD, SA, REF( 4), 0xe7d3fbc8, 20)
-	ROUND(`F2', SA, SB, SC, SD, REF( 9), 0x21e1cde6, 5)
-	ROUND(`F2', SD, SA, SB, SC, REF(14), 0xc33707d6, 9)
-	ROUND(`F2', SC, SD, SA, SB, REF( 3), 0xf4d50d87, 14)
-	ROUND(`F2', SB, SC, SD, SA, REF( 8), 0x455a14ed, 20)
-	ROUND(`F2', SA, SB, SC, SD, REF(13), 0xa9e3e905, 5)
-	ROUND(`F2', SD, SA, SB, SC, REF( 2), 0xfcefa3f8, 9)
-	ROUND(`F2', SC, SD, SA, SB, REF( 7), 0x676f02d9, 14)
-	ROUND(`F2', SB, SC, SD, SA, REF(12), 0x8d2a4c8a, 20)
-
-	ROUND(`F3', SA, SB, SC, SD, REF( 5), 0xfffa3942, 4)
-	ROUND(`F3', SD, SA, SB, SC, REF( 8), 0x8771f681, 11)
-	ROUND(`F3', SC, SD, SA, SB, REF(11), 0x6d9d6122, 16)
-	ROUND(`F3', SB, SC, SD, SA, REF(14), 0xfde5380c, 23)
-	ROUND(`F3', SA, SB, SC, SD, REF( 1), 0xa4beea44, 4)
-	ROUND(`F3', SD, SA, SB, SC, REF( 4), 0x4bdecfa9, 11)
-	ROUND(`F3', SC, SD, SA, SB, REF( 7), 0xf6bb4b60, 16)
-	ROUND(`F3', SB, SC, SD, SA, REF(10), 0xbebfbc70, 23)
-	ROUND(`F3', SA, SB, SC, SD, REF(13), 0x289b7ec6, 4)
-	ROUND(`F3', SD, SA, SB, SC, REF( 0), 0xeaa127fa, 11)
-	ROUND(`F3', SC, SD, SA, SB, REF( 3), 0xd4ef3085, 16)
-	ROUND(`F3', SB, SC, SD, SA, REF( 6), 0x04881d05, 23)
-	ROUND(`F3', SA, SB, SC, SD, REF( 9), 0xd9d4d039, 4)
-	ROUND(`F3', SD, SA, SB, SC, REF(12), 0xe6db99e5, 11)
-	ROUND(`F3', SC, SD, SA, SB, REF(15), 0x1fa27cf8, 16)
-	ROUND(`F3', SB, SC, SD, SA, REF( 2), 0xc4ac5665, 23)
-
-	ROUND(`F4', SA, SB, SC, SD, REF( 0), 0xf4292244, 6)
-	ROUND(`F4', SD, SA, SB, SC, REF( 7), 0x432aff97, 10)
-	ROUND(`F4', SC, SD, SA, SB, REF(14), 0xab9423a7, 15)
-	ROUND(`F4', SB, SC, SD, SA, REF( 5), 0xfc93a039, 21)
-	ROUND(`F4', SA, SB, SC, SD, REF(12), 0x655b59c3, 6)
-	ROUND(`F4', SD, SA, SB, SC, REF( 3), 0x8f0ccc92, 10)
-	ROUND(`F4', SC, SD, SA, SB, REF(10), 0xffeff47d, 15)
-	ROUND(`F4', SB, SC, SD, SA, REF( 1), 0x85845dd1, 21)
-	ROUND(`F4', SA, SB, SC, SD, REF( 8), 0x6fa87e4f, 6)
-	ROUND(`F4', SD, SA, SB, SC, REF(15), 0xfe2ce6e0, 10)
-	ROUND(`F4', SC, SD, SA, SB, REF( 6), 0xa3014314, 15)
-	ROUND(`F4', SB, SC, SD, SA, REF(13), 0x4e0811a1, 21)
-	ROUND(`F4', SA, SB, SC, SD, REF( 4), 0xf7537e82, 6)
-	ROUND(`F4', SD, SA, SB, SC, REF(11), 0xbd3af235, 10)
-	ROUND(`F4', SC, SD, SA, SB, REF( 2), 0x2ad7d2bb, 15)
-	ROUND(`F4', SB, SC, SD, SA, REF( 9), 0xeb86d391, 21)
-
-	C Update the state vector
-	addl	XREG(SA), (STATE)
-	addl	XREG(SB), 4(STATE)
-	addl	XREG(SC), 8(STATE)
-	addl	XREG(SD), 12(STATE)
-
-	pop	%rbx
-	pop	%rbp
-	W64_EXIT(2,0)
-
-	ret
-EPILOGUE(nettle_md5_compress)
-- 
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