From patchwork Sun Mar 7 16:54:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 395578 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0356AC433DB for ; Sun, 7 Mar 2021 16:55:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B24B9650F7 for ; Sun, 7 Mar 2021 16:55:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231381AbhCGQyw (ORCPT ); Sun, 7 Mar 2021 11:54:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:46460 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231380AbhCGQyk (ORCPT ); Sun, 7 Mar 2021 11:54:40 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6EA17650F7; Sun, 7 Mar 2021 16:54:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1615136080; bh=sRnuXXD7TlfFv4eImJMtLg/XRHVEyLz/rJplHnrqJ5w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HmD5feJRT/m5WjVhVrMiryy2N3E/TYW1urTAJpWyrct8FRurRkNyvJq8z4M4bW4YS aa6fuFApzqY7pyxd8QUcCsbezkcusnzvNsUOY6mn0yY0BhZC+lXuvSCne/t2rLWcrM nBvLGICrOr2iPVcrs0m1ZQ59lvWBPoNoXelQahlS0EiyvWCjkNHmaJ8uYoi+954ubj X2Ivgd4nxjycAQng+BcqQo6ecRZS/dOHlqGfTkwnQ50+hM5W5VJeOWDI1PPIxQL7TI MWieH9kNXhi7gxj16RHjyQrkC1TU0Bw2S/PupMXdwoOTw/R+mwvi3usGZdHeaRDzbg uHbO5IaCl8qqA== From: Ard Biesheuvel To: linux-crypto@vger.kernel.org Cc: herbert@gondor.apana.org.au, Ard Biesheuvel , Geert Uytterhoeven , Nicolas Pitre , Eric Biggers , Linus Walleij Subject: [PATCH v2 2/2] crypto: arm/chacha-scalar - switch to common rev_32 macro Date: Sun, 7 Mar 2021 17:54:24 +0100 Message-Id: <20210307165424.165188-3-ardb@kernel.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210307165424.165188-1-ardb@kernel.org> References: <20210307165424.165188-1-ardb@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Drop the local definition of a byte swapping macro and use the common one instead. Signed-off-by: Ard Biesheuvel Reviewed-by: Nicolas Pitre Reviewed-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Reviewed-by: Eric Biggers --- arch/arm/crypto/chacha-scalar-core.S | 43 ++++++-------------- 1 file changed, 13 insertions(+), 30 deletions(-) diff --git a/arch/arm/crypto/chacha-scalar-core.S b/arch/arm/crypto/chacha-scalar-core.S index 2985b80a45b5..083fe1ab96d0 100644 --- a/arch/arm/crypto/chacha-scalar-core.S +++ b/arch/arm/crypto/chacha-scalar-core.S @@ -41,32 +41,15 @@ X14 .req r12 X15 .req r14 -.macro __rev out, in, t0, t1, t2 -.if __LINUX_ARM_ARCH__ >= 6 - rev \out, \in -.else - lsl \t0, \in, #24 - and \t1, \in, #0xff00 - and \t2, \in, #0xff0000 - orr \out, \t0, \in, lsr #24 - orr \out, \out, \t1, lsl #8 - orr \out, \out, \t2, lsr #8 -.endif -.endm - -.macro _le32_bswap x, t0, t1, t2 +.macro _le32_bswap_4x a, b, c, d, tmp #ifdef __ARMEB__ - __rev \x, \x, \t0, \t1, \t2 + rev_l \a, \tmp + rev_l \b, \tmp + rev_l \c, \tmp + rev_l \d, \tmp #endif .endm -.macro _le32_bswap_4x a, b, c, d, t0, t1, t2 - _le32_bswap \a, \t0, \t1, \t2 - _le32_bswap \b, \t0, \t1, \t2 - _le32_bswap \c, \t0, \t1, \t2 - _le32_bswap \d, \t0, \t1, \t2 -.endm - .macro __ldrd a, b, src, offset #if __LINUX_ARM_ARCH__ >= 6 ldrd \a, \b, [\src, #\offset] @@ -200,7 +183,7 @@ add X1, X1, r9 add X2, X2, r10 add X3, X3, r11 - _le32_bswap_4x X0, X1, X2, X3, r8, r9, r10 + _le32_bswap_4x X0, X1, X2, X3, r8 ldmia r12!, {r8-r11} eor X0, X0, r8 eor X1, X1, r9 @@ -216,7 +199,7 @@ ldmia r12!, {X0-X3} add X6, r10, X6, ror #brot add X7, r11, X7, ror #brot - _le32_bswap_4x X4, X5, X6, X7, r8, r9, r10 + _le32_bswap_4x X4, X5, X6, X7, r8 eor X4, X4, X0 eor X5, X5, X1 eor X6, X6, X2 @@ -231,7 +214,7 @@ add r1, r1, r9 // x9 add r6, r6, r10 // x10 add r7, r7, r11 // x11 - _le32_bswap_4x r0, r1, r6, r7, r8, r9, r10 + _le32_bswap_4x r0, r1, r6, r7, r8 ldmia r12!, {r8-r11} eor r0, r0, r8 // x8 eor r1, r1, r9 // x9 @@ -245,7 +228,7 @@ add r3, r9, r3, ror #drot // x13 add r4, r10, r4, ror #drot // x14 add r5, r11, r5, ror #drot // x15 - _le32_bswap_4x r2, r3, r4, r5, r9, r10, r11 + _le32_bswap_4x r2, r3, r4, r5, r9 ldr r9, [sp, #72] // load LEN eor r2, r2, r0 // x12 eor r3, r3, r1 // x13 @@ -301,7 +284,7 @@ add X1, X1, r9 add X2, X2, r10 add X3, X3, r11 - _le32_bswap_4x X0, X1, X2, X3, r8, r9, r10 + _le32_bswap_4x X0, X1, X2, X3, r8 stmia r14!, {X0-X3} // Save keystream for x4-x7 @@ -311,7 +294,7 @@ add X5, r9, X5, ror #brot add X6, r10, X6, ror #brot add X7, r11, X7, ror #brot - _le32_bswap_4x X4, X5, X6, X7, r8, r9, r10 + _le32_bswap_4x X4, X5, X6, X7, r8 add r8, sp, #64 stmia r14!, {X4-X7} @@ -323,7 +306,7 @@ add r1, r1, r9 // x9 add r6, r6, r10 // x10 add r7, r7, r11 // x11 - _le32_bswap_4x r0, r1, r6, r7, r8, r9, r10 + _le32_bswap_4x r0, r1, r6, r7, r8 stmia r14!, {r0,r1,r6,r7} __ldrd r8, r9, sp, 144 __ldrd r10, r11, sp, 152 @@ -331,7 +314,7 @@ add r3, r9, r3, ror #drot // x13 add r4, r10, r4, ror #drot // x14 add r5, r11, r5, ror #drot // x15 - _le32_bswap_4x r2, r3, r4, r5, r9, r10, r11 + _le32_bswap_4x r2, r3, r4, r5, r9 stmia r14, {r2-r5} // Stack: ks0-ks15 unused0-unused7 x0-x15 OUT IN LEN