73 lines
2.6 KiB
ArmAsm
73 lines
2.6 KiB
ArmAsm
/* SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause */
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//
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// This file is dual-licensed, meaning that you can use it under your
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// choice of either of the following two licenses:
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//
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// Copyright 2023 The OpenSSL Project Authors. All Rights Reserved.
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//
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// Licensed under the Apache License 2.0 (the "License"). You can obtain
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// a copy in the file LICENSE in the source distribution or at
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// https://www.openssl.org/source/license.html
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//
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// or
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//
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// Copyright (c) 2023, Christoph Müllner <christoph.muellner@vrull.eu>
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// Copyright (c) 2023, Jerry Shih <jerry.shih@sifive.com>
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// Copyright 2024 Google LLC
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// The generated code of this file depends on the following RISC-V extensions:
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// - RV64I
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// - RISC-V Vector ('V') with VLEN >= 128
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// - RISC-V Vector GCM/GMAC extension ('Zvkg')
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#include <linux/linkage.h>
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.text
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.option arch, +zvkg
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#define ACCUMULATOR a0
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#define KEY a1
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#define DATA a2
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#define LEN a3
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// void ghash_zvkg(be128 *accumulator, const be128 *key, const u8 *data,
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// size_t len);
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//
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// |len| must be nonzero and a multiple of 16 (GHASH_BLOCK_SIZE).
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SYM_FUNC_START(ghash_zvkg)
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vsetivli zero, 4, e32, m1, ta, ma
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vle32.v v1, (ACCUMULATOR)
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vle32.v v2, (KEY)
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.Lnext_block:
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vle32.v v3, (DATA)
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vghsh.vv v1, v2, v3
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addi DATA, DATA, 16
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addi LEN, LEN, -16
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bnez LEN, .Lnext_block
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vse32.v v1, (ACCUMULATOR)
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ret
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SYM_FUNC_END(ghash_zvkg)
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