From nobody Tue Feb 10 17:13:22 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1610393088; cv=none; d=zohomail.com; s=zohoarc; b=cO71l6dhyvpU+opEs/si/8uz9de9CN52U79CxYJngzNKcw1pVIlDg9t6xX+or3F2DJvFYbbNQ9oPcwpl9z3bqYL+c02NE0yzLZHKbc724iCJZ8WqsWWOmDRHq8lY/Ckgxpb0pVmhQKy6mW9wO53QTi/u/9x/G0aJ6PTYGhgTghs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1610393088; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=kFpRdpzIBHPgybwqUXYjnSl/F8QbD35R7VDxiD3dIh0=; b=RPL+/vxHcPSBOquuLIvDNjqsQManu8z7SGx6FNQrB7mQbR+p6mBu/4jjlLv2TvyReV3DubABufc+VcJfjWKKM6kxRhAoUv4Y9ZePggjRXS2FKqi/9OeHBPUWbu8DeiVCzxnhJIRsJGIaPqD53497IyIB8Nel9pPLKjSXKqfcFlQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1610393088640706.4401291158994; Mon, 11 Jan 2021 11:24:48 -0800 (PST) Received: from localhost ([::1]:37110 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kz2o3-0000IE-F7 for importer@patchew.org; Mon, 11 Jan 2021 14:24:47 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:47574) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kz2S3-0006NE-7y for qemu-devel@nongnu.org; Mon, 11 Jan 2021 14:02:03 -0500 Received: from mail-pf1-x435.google.com ([2607:f8b0:4864:20::435]:38369) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kz2Rw-0006Ux-Dx for qemu-devel@nongnu.org; Mon, 11 Jan 2021 14:02:02 -0500 Received: by mail-pf1-x435.google.com with SMTP id d2so502694pfq.5 for ; Mon, 11 Jan 2021 11:01:55 -0800 (PST) Received: from localhost.localdomain (rrcs-173-197-107-21.west.biz.rr.com. [173.197.107.21]) by smtp.gmail.com with ESMTPSA id n195sm350395pfd.169.2021.01.11.11.01.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Jan 2021 11:01:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=kFpRdpzIBHPgybwqUXYjnSl/F8QbD35R7VDxiD3dIh0=; b=MYZ9+MhGWMobvkDVemyZXDjKj1Jsr68pjUw78sab3TLLmoFXNv6vnNKtsh3TZX+b0/ je+f3nUwJfiroClwEsju77HfNqmp0twG1/hIJFr4VxZASwOotEgUV2Kesioi+3dxj2hW pjpERwUdY0Cu1eigNpfLdZhCzgYHhy0PM37tpTEZPPlvBkdx7Bu5D0W4ZJqXx4ibelhB cNfPrIXNPiZBeWuFDixcDHFoCcPEpmy1JoXSAXFEbHjh81y9mWAjmDURg4Cejktj443M j4SE0Db15YdeeUAXaVimg83JQOhCUH/NdgYwjSTEDlYmSi0I3kUQNFr0rg0erLmHgMM9 AB3w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=kFpRdpzIBHPgybwqUXYjnSl/F8QbD35R7VDxiD3dIh0=; b=RnU5W6K609YNPXJk2IStWH8eFRu3LjD25FsxxAf6jsNUOfC2KKb+NkIAvgXJUpztCE 8pq7/az6h7Wm8R6bI0v2Ruh5OBBlHm+VyOhLZB9KFmIb5JYJBATeCuYN4lCM/jcYEpPo TvY1sofVo9Ba41VGzzwnTQ/V3W43aRfL2yGbTlhFFj6gxF2vYSMMV+jTI2v9jfaQEhpU izJRWSShyt1BPYK6WWt2FNWliJaSILa7Hagwvs6D7Bb1AEWvEvl57gdIvzThnArg/4ek jr88/OalWm/E0PdyBfqj7NdtJgEqrsH3fPZHfRKwOQkyJ5sPcij0wHNJQIIQcRsiQN+H JNYQ== X-Gm-Message-State: AOAM533wBIiRGAj2XDv2zQZOrWfE4fZIX2jnl+rOHMMGhzielgO/YpvS JhiUf+78+B+ZomOKYZgenF5KiW4QmRbu6w== X-Google-Smtp-Source: ABdhPJwKGWWV7rmk06XyngogCG41Qy/w3RmnPpxpZSVUVXsJ7lCBMv3sWAHbDhD2WWjI9bQi6TB+WA== X-Received: by 2002:a62:543:0:b029:19e:5627:1c4d with SMTP id 64-20020a6205430000b029019e56271c4dmr801101pff.31.1610391714772; Mon, 11 Jan 2021 11:01:54 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 22/30] target/arm: Enforce alignment for VLDn/VSTn (multiple) Date: Mon, 11 Jan 2021 09:01:05 -1000 Message-Id: <20210111190113.303726-23-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210111190113.303726-1-richard.henderson@linaro.org> References: <20210111190113.303726-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::435; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x435.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/translate-neon.c.inc | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/target/arm/translate-neon.c.inc b/target/arm/translate-neon.c.= inc index 9c2b076027..e706c37c80 100644 --- a/target/arm/translate-neon.c.inc +++ b/target/arm/translate-neon.c.inc @@ -429,7 +429,7 @@ static bool trans_VLDST_multiple(DisasContext *s, arg_V= LDST_multiple *a) { /* Neon load/store multiple structures */ int nregs, interleave, spacing, reg, n; - MemOp endian =3D s->be_data; + MemOp mop, align, endian; int mmu_idx =3D get_mem_index(s); int size =3D a->size; TCGv_i64 tmp64; @@ -473,20 +473,36 @@ static bool trans_VLDST_multiple(DisasContext *s, arg= _VLDST_multiple *a) } =20 /* For our purposes, bytes are always little-endian. */ + endian =3D s->be_data; if (size =3D=3D 0) { endian =3D MO_LE; } + + /* Enforce alignment requested by the instruction */ + if (a->align) { + align =3D pow2_align(a->align + 2); /* 4 ** a->align */ + } else { + align =3D s->align_mem ? MO_ALIGN : 0; + } + /* * Consecutive little-endian elements from a single register * can be promoted to a larger little-endian operation. */ if (interleave =3D=3D 1 && endian =3D=3D MO_LE) { + /* Retain any natural alignment. */ + if (align =3D=3D MO_ALIGN) { + align =3D pow2_align(size); + } size =3D 3; } + tmp64 =3D tcg_temp_new_i64(); addr =3D tcg_temp_new_i32(); tmp =3D tcg_const_i32(1 << size); load_reg_var(s, addr, a->rn); + + mop =3D endian | size | align; for (reg =3D 0; reg < nregs; reg++) { for (n =3D 0; n < 8 >> size; n++) { int xs; @@ -494,15 +510,16 @@ static bool trans_VLDST_multiple(DisasContext *s, arg= _VLDST_multiple *a) int tt =3D a->vd + reg + spacing * xs; =20 if (a->l) { - gen_aa32_ld_internal_i64(s, tmp64, addr, mmu_idx, - endian | size); + gen_aa32_ld_internal_i64(s, tmp64, addr, mmu_idx, mop); neon_store_element64(tt, n, size, tmp64); } else { neon_load_element64(tmp64, tt, n, size); - gen_aa32_st_internal_i64(s, tmp64, addr, mmu_idx, - endian | size); + gen_aa32_st_internal_i64(s, tmp64, addr, mmu_idx, mop); } tcg_gen_add_i32(addr, addr, tmp); + + /* Subsequent memory operations inherit alignment */ + mop &=3D ~MO_AMASK; } } } --=20 2.25.1