From patchwork Wed Jun 22 15:49:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Zhongjin X-Patchwork-Id: 12891097 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1BB00C43334 for ; Wed, 22 Jun 2022 16:03:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=QXOLd1cPhVfYsU0+bOkalZT+zFuCHECel4jr/gIJLs0=; b=BqzwAJiG16iLub Wykk5y1LMeFuyeO52Ro27T2LSPFtQV3120Vklp7tJTVcl2d7WCNhWREglBMgnOn7xBc/JjZxY4Bj2 47gXkCHE+r+Ah3hcUFrJQnKL3iUcJA8r+4cayVEm+B5pVAyteYMvnvr8aVFVeadMrRaAIbiKeLjEY DLtgPGs+E99YLaS+5xMMSNh4vH2mmJz3qBv69cnhQxFqea4X4sIArNZzHcm840MVWBCBfDSTwdJA2 7LL6YEX12tdnh5ryJp9qDztgV/x13pmVI0Q0eYovBZsZDLbFkPjdIRAzSjiFjF55CbVbpmxRitsNX /A/61ImQhC23LeQinMXQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o42oC-00BLW3-Dk; Wed, 22 Jun 2022 16:02:25 +0000 Received: from szxga03-in.huawei.com ([45.249.212.189]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o42f6-00BHmb-Na for linux-arm-kernel@lists.infradead.org; Wed, 22 Jun 2022 15:53:06 +0000 Received: from dggpemm500022.china.huawei.com (unknown [172.30.72.56]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4LSnvK3frHzDsH4; Wed, 22 Jun 2022 23:52:13 +0800 (CST) Received: from dggpemm500013.china.huawei.com (7.185.36.172) by dggpemm500022.china.huawei.com (7.185.36.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Wed, 22 Jun 2022 23:52:47 +0800 Received: from ubuntu1804.huawei.com (10.67.175.36) by dggpemm500013.china.huawei.com (7.185.36.172) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Wed, 22 Jun 2022 23:52:46 +0800 From: Chen Zhongjin To: , , , , , CC: , , , , , , , , , , , , , Subject: [PATCH v5 26/33] arm64: crypto: Remove unnecessary stackframe Date: Wed, 22 Jun 2022 23:49:13 +0800 Message-ID: <20220622154920.95075-27-chenzhongjin@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220622154920.95075-1-chenzhongjin@huawei.com> References: <20220622154920.95075-1-chenzhongjin@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.175.36] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpemm500013.china.huawei.com (7.185.36.172) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220622_085301_109091_61FCFBAA X-CRM114-Status: UNSURE ( 8.31 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The way sha256_block_neon restore the stackframe confuses objtool. But it turns out this function is a leaf function and does not use FP nor LR as scratch register. Do not create a stackframe in this function as it is not necessary. Signed-off-by: Julien Thierry Signed-off-by: Chen Zhongjin --- arch/arm64/crypto/sha512-armv8.pl | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/arch/arm64/crypto/sha512-armv8.pl b/arch/arm64/crypto/sha512-armv8.pl index 1882c4110026..6e2a96e05c5a 100644 --- a/arch/arm64/crypto/sha512-armv8.pl +++ b/arch/arm64/crypto/sha512-armv8.pl @@ -648,8 +648,6 @@ $code.=<<___; .align 4 sha256_block_neon: .Lneon_entry: - stp x29, x30, [sp, #-16]! - mov x29, sp sub sp,sp,#16*4 adr $Ktbl,K256 @@ -736,8 +734,7 @@ $code.=<<___; mov $Xfer,sp b.ne .L_00_48 - ldr x29,[x29] - add sp,sp,#16*4+16 + add sp,sp,#16*4 ret .size sha256_block_neon,.-sha256_block_neon ___