--- /dev/null
+#! /usr/bin/env perl
+# This file is dual-licensed, meaning that you can use it under your
+# choice of either of the following two licenses:
+#
+# Copyright 2025 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the Apache License 2.0 (the "License"). You can obtain
+# a copy in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+#
+# or
+#
+# Copyright (c) 2025, Julian Zhu <julian.oerv@isrc.iscas.ac.cn>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# The generated code of this file depends on the following RISC-V extensions:
+# - RV64I
+# Optional:
+# - RISC-V Basic Bit-manipulation extension ('Zbb')
+
+use strict;
+use warnings;
+
+use FindBin qw($Bin);
+use lib "$Bin";
+use lib "$Bin/../../perlasm";
+use riscv;
+
+# $output is the last argument if it looks like a file (it has an extension)
+# $flavour is the first argument if it doesn't look like a file
+my $output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
+my $flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
+
+my $use_zbb = $flavour && $flavour =~ /zbb/i ? 1 : 0;
+my $isaext = "_" . ( $use_zbb ? "zbb" : "riscv64" );
+
+$output and open STDOUT,">$output";
+
+my $code=<<___;
+.text
+___
+
+# Function arguments
+my ($CTX, $INP, $LEN, $A, $B, $C, $D) = ("a0", "a1", "a2", "a4", "a5", "a6", "a7");
+my ($KT, $T0, $T1, $T2, $lA, $lB, $lC, $lD) = ("a3", "t0", "t1", "t2", "t3", "t4", "t5", "t6");
+my ($C1, $C2, $C3, $C4, $C5, $C6, $C7, $C8) = ("s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7");
+
+sub ROUND0 {
+ my ($a, $b, $c, $d, $x, $const, $shift, $is_odd) = @_;
+ my $code=<<___;
+ li $T0, $const
+___
+ if ($is_odd) {
+ $code .= <<___;
+ addw $a, $a, $T0
+ srli $T0, $x, 32
+___
+ } else {
+ $code .= <<___;
+ addw $a, $a, $x
+___
+ }
+ $code .= <<___;
+ addw $a, $a, $T0
+ xor $T0, $c, $d
+ and $T0, $T0, $b
+ xor $T0, $T0, $d
+ addw $a, $a, $T0
+___
+ if ($use_zbb) {
+ my $ror_part = <<___;
+ @{[roriw $a, $a, 32 - $shift]}
+___
+ $code .= $ror_part;
+ } else {
+ my $ror_part = <<___;
+ @{[roriw_rv64i $a, $a, $T1, $T2, 32 - $shift]}
+___
+ $code .= $ror_part;
+ }
+ $code .= <<___;
+ addw $a, $a, $b
+___
+ return $code;
+}
+
+sub ROUND1 {
+ my ($a, $b, $c, $d, $x, $const, $shift, $is_odd) = @_;
+ my $code=<<___;
+ li $T0, $const
+___
+ if ($is_odd) {
+ $code .= <<___;
+ addw $a, $a, $T0
+ srli $T0, $x, 32
+___
+ } else {
+ $code .= <<___;
+ addw $a, $a, $x
+___
+ }
+ $code .= <<___;
+ addw $a, $a, $T0
+ xor $T0, $b, $c
+ and $T0, $T0, $d
+ xor $T0, $T0, $c
+ addw $a, $a, $T0
+___
+ if ($use_zbb) {
+ my $ror_part = <<___;
+ @{[roriw $a, $a, 32 - $shift]}
+___
+ $code .= $ror_part;
+ } else {
+ my $ror_part = <<___;
+ @{[roriw_rv64i $a, $a, $T1, $T2, 32 - $shift]}
+___
+ $code .= $ror_part;
+ }
+ $code .= <<___;
+ addw $a, $a, $b
+___
+ return $code;
+}
+
+sub ROUND2 {
+ my ($a, $b, $c, $d, $x, $const, $shift, $is_odd) = @_;
+ my $code=<<___;
+ li $T0, $const
+___
+ if ($is_odd) {
+ $code .= <<___;
+ addw $a, $a, $T0
+ srli $T0, $x, 32
+___
+ } else {
+ $code .= <<___;
+ addw $a, $a, $x
+___
+ }
+ $code .= <<___;
+ addw $a, $a, $T0
+ xor $T0, $c, $d
+ xor $T0, $T0, $b
+ addw $a, $a, $T0
+___
+ if ($use_zbb) {
+ my $ror_part = <<___;
+ @{[roriw $a, $a, 32 - $shift]}
+___
+ $code .= $ror_part;
+ } else {
+ my $ror_part = <<___;
+ @{[roriw_rv64i $a, $a, $T1, $T2, 32 - $shift]}
+___
+ $code .= $ror_part;
+ }
+ $code .= <<___;
+ addw $a, $a, $b
+___
+ return $code;
+}
+
+sub ROUND3 {
+ my ($a, $b, $c, $d, $x, $const, $shift, $is_odd) = @_;
+ my $code=<<___;
+ li $T0, $const
+___
+ if ($is_odd) {
+ $code .= <<___;
+ addw $a, $a, $T0
+ srli $T0, $x, 32
+___
+ } else {
+ $code .= <<___;
+ addw $a, $a, $x
+___
+ }
+ $code .= <<___;
+ addw $a, $a, $T0
+___
+ if ($use_zbb) {
+ my $orn_part = <<___;
+ @{[orn $T0, $b, $d]}
+___
+ $code .= $orn_part;
+ } else {
+ my $orn_part = <<___;
+ @{[orn_rv64i $T0, $b, $d]}
+___
+ $code .= $orn_part;
+ }
+ $code .= <<___;
+ xor $T0, $T0, $c
+ addw $a, $a, $T0
+___
+ if ($use_zbb) {
+ my $ror_part = <<___;
+ @{[roriw $a, $a, 32 - $shift]}
+___
+ $code .= $ror_part;
+ } else {
+ my $ror_part = <<___;
+ @{[roriw_rv64i $a, $a, $T1, $T2, 32 - $shift]}
+___
+ $code .= $ror_part;
+ }
+ $code .= <<___;
+ addw $a, $a, $b
+___
+ return $code;
+}
+
+################################################################################
+# void ossl_md5_block_asm_data_order@{[$isaext]}(MD5_CTX *c, const void *p, size_t num)
+$code .= <<___;
+.p2align 3
+.globl ossl_md5_block_asm_data_order@{[$isaext]}
+.type ossl_md5_block_asm_data_order@{[$isaext]},\@function
+ossl_md5_block_asm_data_order@{[$isaext]}:
+
+ addi sp, sp, -64
+
+ sd s0, 0(sp)
+ sd s1, 8(sp)
+ sd s2, 16(sp)
+ sd s3, 24(sp)
+ sd s4, 32(sp)
+ sd s5, 40(sp)
+ sd s6, 48(sp)
+ sd s7, 56(sp)
+
+ # load ctx
+ lw $A, 0($CTX)
+ lw $B, 4($CTX)
+ lw $C, 8($CTX)
+ lw $D, 12($CTX)
+
+L_round_loop:
+
+ ld $C1, 0($INP)
+ ld $C2, 8($INP)
+ ld $C3, 16($INP)
+ ld $C4, 24($INP)
+ ld $C5, 32($INP)
+ ld $C6, 40($INP)
+ ld $C7, 48($INP)
+ ld $C8, 56($INP)
+
+ mv $lA, $A
+ mv $lB, $B
+ mv $lC, $C
+ mv $lD, $D
+
+ @{[ROUND0 $A, $B, $C, $D, $C1, 0xd76aa478, 7, 0]}
+ @{[ROUND0 $D, $A, $B, $C, $C1, 0xe8c7b756, 12, 1]}
+ @{[ROUND0 $C, $D, $A, $B, $C2, 0x242070db, 17, 0]}
+ @{[ROUND0 $B, $C, $D, $A, $C2, 0xc1bdceee, 22, 1]}
+ @{[ROUND0 $A, $B, $C, $D, $C3, 0xf57c0faf, 7, 0]}
+ @{[ROUND0 $D, $A, $B, $C, $C3, 0x4787c62a, 12, 1]}
+ @{[ROUND0 $C, $D, $A, $B, $C4, 0xa8304613, 17, 0]}
+ @{[ROUND0 $B, $C, $D, $A, $C4, 0xfd469501, 22, 1]}
+ @{[ROUND0 $A, $B, $C, $D, $C5, 0x698098d8, 7, 0]}
+ @{[ROUND0 $D, $A, $B, $C, $C5, 0x8b44f7af, 12, 1]}
+ @{[ROUND0 $C, $D, $A, $B, $C6, 0xffff5bb1, 17, 0]}
+ @{[ROUND0 $B, $C, $D, $A, $C6, 0x895cd7be, 22, 1]}
+ @{[ROUND0 $A, $B, $C, $D, $C7, 0x6b901122, 7, 0]}
+ @{[ROUND0 $D, $A, $B, $C, $C7, 0xfd987193, 12, 1]}
+ @{[ROUND0 $C, $D, $A, $B, $C8, 0xa679438e, 17, 0]}
+ @{[ROUND0 $B, $C, $D, $A, $C8, 0x49b40821, 22, 1]}
+
+ @{[ROUND1 $A, $B, $C, $D, $C1, 0xf61e2562, 5, 1]}
+ @{[ROUND1 $D, $A, $B, $C, $C4, 0xc040b340, 9, 0]}
+ @{[ROUND1 $C, $D, $A, $B, $C6, 0x265e5a51, 14, 1]}
+ @{[ROUND1 $B, $C, $D, $A, $C1, 0xe9b6c7aa, 20, 0]}
+ @{[ROUND1 $A, $B, $C, $D, $C3, 0xd62f105d, 5, 1]}
+ @{[ROUND1 $D, $A, $B, $C, $C6, 0x2441453, 9, 0]}
+ @{[ROUND1 $C, $D, $A, $B, $C8, 0xd8a1e681, 14, 1]}
+ @{[ROUND1 $B, $C, $D, $A, $C3, 0xe7d3fbc8, 20, 0]}
+ @{[ROUND1 $A, $B, $C, $D, $C5, 0x21e1cde6, 5, 1]}
+ @{[ROUND1 $D, $A, $B, $C, $C8, 0xc33707d6, 9, 0]}
+ @{[ROUND1 $C, $D, $A, $B, $C2, 0xf4d50d87, 14, 1]}
+ @{[ROUND1 $B, $C, $D, $A, $C5, 0x455a14ed, 20, 0]}
+ @{[ROUND1 $A, $B, $C, $D, $C7, 0xa9e3e905, 5, 1]}
+ @{[ROUND1 $D, $A, $B, $C, $C2, 0xfcefa3f8, 9, 0]}
+ @{[ROUND1 $C, $D, $A, $B, $C4, 0x676f02d9, 14, 1]}
+ @{[ROUND1 $B, $C, $D, $A, $C7, 0x8d2a4c8a, 20, 0]}
+
+ @{[ROUND2 $A, $B, $C, $D, $C3, 0xfffa3942, 4, 1]}
+ @{[ROUND2 $D, $A, $B, $C, $C5, 0x8771f681, 11, 0]}
+ @{[ROUND2 $C, $D, $A, $B, $C6, 0x6d9d6122, 16, 1]}
+ @{[ROUND2 $B, $C, $D, $A, $C8, 0xfde5380c, 23, 0]}
+ @{[ROUND2 $A, $B, $C, $D, $C1, 0xa4beea44, 4, 1]}
+ @{[ROUND2 $D, $A, $B, $C, $C3, 0x4bdecfa9, 11, 0]}
+ @{[ROUND2 $C, $D, $A, $B, $C4, 0xf6bb4b60, 16, 1]}
+ @{[ROUND2 $B, $C, $D, $A, $C6, 0xbebfbc70, 23, 0]}
+ @{[ROUND2 $A, $B, $C, $D, $C7, 0x289b7ec6, 4, 1]}
+ @{[ROUND2 $D, $A, $B, $C, $C1, 0xeaa127fa, 11, 0]}
+ @{[ROUND2 $C, $D, $A, $B, $C2, 0xd4ef3085, 16, 1]}
+ @{[ROUND2 $B, $C, $D, $A, $C4, 0x4881d05, 23, 0]}
+ @{[ROUND2 $A, $B, $C, $D, $C5, 0xd9d4d039, 4, 1]}
+ @{[ROUND2 $D, $A, $B, $C, $C7, 0xe6db99e5, 11, 0]}
+ @{[ROUND2 $C, $D, $A, $B, $C8, 0x1fa27cf8, 16, 1]}
+ @{[ROUND2 $B, $C, $D, $A, $C2, 0xc4ac5665, 23, 0]}
+
+ @{[ROUND3 $A, $B, $C, $D, $C1, 0xf4292244, 6, 0]}
+ @{[ROUND3 $D, $A, $B, $C, $C4, 0x432aff97, 10, 1]}
+ @{[ROUND3 $C, $D, $A, $B, $C8, 0xab9423a7, 15, 0]}
+ @{[ROUND3 $B, $C, $D, $A, $C3, 0xfc93a039, 21, 1]}
+ @{[ROUND3 $A, $B, $C, $D, $C7, 0x655b59c3, 6, 0]}
+ @{[ROUND3 $D, $A, $B, $C, $C2, 0x8f0ccc92, 10, 1]}
+ @{[ROUND3 $C, $D, $A, $B, $C6, 0xffeff47d, 15, 0]}
+ @{[ROUND3 $B, $C, $D, $A, $C1, 0x85845dd1, 21, 1]}
+ @{[ROUND3 $A, $B, $C, $D, $C5, 0x6fa87e4f, 6, 0]}
+ @{[ROUND3 $D, $A, $B, $C, $C8, 0xfe2ce6e0, 10, 1]}
+ @{[ROUND3 $C, $D, $A, $B, $C4, 0xa3014314, 15, 0]}
+ @{[ROUND3 $B, $C, $D, $A, $C7, 0x4e0811a1, 21, 1]}
+ @{[ROUND3 $A, $B, $C, $D, $C3, 0xf7537e82, 6, 0]}
+ @{[ROUND3 $D, $A, $B, $C, $C6, 0xbd3af235, 10, 1]}
+ @{[ROUND3 $C, $D, $A, $B, $C2, 0x2ad7d2bb, 15, 0]}
+ @{[ROUND3 $B, $C, $D, $A, $C5, 0xeb86d391, 21, 1]}
+
+ addw $A, $A, $lA
+ addw $B, $B, $lB
+ addw $C, $C, $lC
+ addw $D, $D, $lD
+
+ addi $INP, $INP, 64
+
+ addi $LEN, $LEN, -1
+
+ bnez $LEN, L_round_loop
+
+ sw $A, 0($CTX)
+ sw $B, 4($CTX)
+ sw $C, 8($CTX)
+ sw $D, 12($CTX)
+
+ ld s0, 0(sp)
+ ld s1, 8(sp)
+ ld s2, 16(sp)
+ ld s3, 24(sp)
+ ld s4, 32(sp)
+ ld s5, 40(sp)
+ ld s6, 48(sp)
+ ld s7, 56(sp)
+
+ addi sp, sp, 64
+
+ ret
+.size ossl_md5_block_asm_data_order@{[$isaext]},.-ossl_md5_block_asm_data_order@{[$isaext]}
+___
+
+print $code;
+
+close STDOUT or die "error closing STDOUT: $!";