From mboxrd@z Thu Jan 1 00:00:00 1970 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 AA150C433FE for ; Fri, 11 Feb 2022 01:53:22 +0000 (UTC) Received: from localhost ([::1]:56786 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nIL7h-0005xz-Oc for qemu-devel@archiver.kernel.org; Thu, 10 Feb 2022 20:53:21 -0500 Received: from eggs.gnu.org ([209.51.188.92]:38934) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nIKnY-0004qh-Pv for qemu-devel@nongnu.org; Thu, 10 Feb 2022 20:32:32 -0500 Received: from [2607:f8b0:4864:20::1033] (port=34343 helo=mail-pj1-x1033.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nIKnS-0007RB-Q7 for qemu-devel@nongnu.org; Thu, 10 Feb 2022 20:32:32 -0500 Received: by mail-pj1-x1033.google.com with SMTP id ki18-20020a17090ae91200b001b8be87e9abso3064062pjb.1 for ; Thu, 10 Feb 2022 17:32:26 -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=dGf6H379BZy6DeZ68czss+3cTWHfMO8pxL4mOJcpMBU=; b=TkaflsB18rfoW+jzTeM4vskmjopROlEpt4ExDn3FobscgH3UiuJlMLl25ZIzGSehBd s3opCbPNek54+9gSozyza8y7Y/e/MgQJA6n/6ekI4g3g8u9UNfr/sGP3PE4GfZ6GO+9X zwuiSWn/Z04BacqzuIWBKtctmTyTdVAoIbKUuyVE0k7VaNyVYaYQYtj8zx0S0JzcdNYO p8qAHEhgYwIOOJ1/st7SF/OlUGXgtvVK4Q0uSXqh8igDf6LWSuTTZ5FY+AO/QSakOWSh NHyNHbluq22aJq6gPl55OfqYTV9LsiHQX+OM9RD7cHTpWJg85KxHWnpyt3r5sKpdSpb8 t4aA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=dGf6H379BZy6DeZ68czss+3cTWHfMO8pxL4mOJcpMBU=; b=mH+Wo8DlvabYwu/Sx/bXirbiroNiXxzEIZcFv0JTPBi8ePx3Y6tnlHrz1Sspejd73X rl+HoBl7mpBC031iIvBXWDjupHMD8N+P/ezXNzMh7BMP34Yx3VoAN7dyoy8MT8lLnhtP 6mP5ZbBmzJ6sDIKWjoXaDiAXguHDKniSEjM2zpGbNJ0fOxG8Scwofs74YfG3yso0jCTF tR9/KRrlhw7GYQdMtVhcWPlMFd6ke6ZUaImqdE3xXKYuvBH3KZEqGHtYFK8uV4O52O0O Ownyk3GMEgNHc9+mwVmznBG/1Ewyv9rhIzLoucL+wh5Jjv8pXN6+LlwvD4ZHg4awE6I+ a4DA== X-Gm-Message-State: AOAM531bEvK/6khPCqeyXH7urfqicaSTEwjyLcvB3gTMXsXC5+Tn1LEV HrIneaejmp0FxWUVbFLPPRJSWEgaXrPkchkM X-Google-Smtp-Source: ABdhPJzMte4nnmQyz5U5BBwlrponfdHYEG7M9s50boEGeZiHblYIfJ70tWM6kBv5dnmGssmsbUH7cg== X-Received: by 2002:a17:903:11d0:: with SMTP id q16mr10000412plh.134.1644543145426; Thu, 10 Feb 2022 17:32:25 -0800 (PST) Received: from localhost.localdomain ([124.189.222.164]) by smtp.gmail.com with ESMTPSA id h5sm25738788pfi.111.2022.02.10.17.32.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 17:32:25 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 20/34] tcg/arm: Check alignment for ldrd and strd Date: Fri, 11 Feb 2022 12:30:45 +1100 Message-Id: <20220211013059.17994-21-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220211013059.17994-1-richard.henderson@linaro.org> References: <20220211013059.17994-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::1033 (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::1033; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1033.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We will shortly allow the use of unaligned memory accesses, and these require proper alignment. Use get_alignment_bits to verify and remove USING_SOFTMMU. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- tcg/arm/tcg-target.c.inc | 23 ++++++++--------------- 1 file changed, 8 insertions(+), 15 deletions(-) diff --git a/tcg/arm/tcg-target.c.inc b/tcg/arm/tcg-target.c.inc index 9eb43407ea..4b0b4f4c2f 100644 --- a/tcg/arm/tcg-target.c.inc +++ b/tcg/arm/tcg-target.c.inc @@ -34,13 +34,6 @@ bool use_idiv_instructions; bool use_neon_instructions; #endif -/* ??? Ought to think about changing CONFIG_SOFTMMU to always defined. */ -#ifdef CONFIG_SOFTMMU -# define USING_SOFTMMU 1 -#else -# define USING_SOFTMMU 0 -#endif - #ifdef CONFIG_DEBUG_TCG static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { "%r0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7", @@ -1621,8 +1614,8 @@ static void tcg_out_qemu_ld_index(TCGContext *s, MemOp opc, tcg_out_ld32_r(s, COND_AL, datalo, addrlo, addend); break; case MO_UQ: - /* Avoid ldrd for user-only emulation, to handle unaligned. */ - if (USING_SOFTMMU + /* LDRD requires alignment; double-check that. */ + if (get_alignment_bits(opc) >= MO_64 && (datalo & 1) == 0 && datahi == datalo + 1) { tcg_out_ldrd_r(s, COND_AL, datalo, addrlo, addend); } else if (datalo != addend) { @@ -1664,8 +1657,8 @@ static void tcg_out_qemu_ld_direct(TCGContext *s, MemOp opc, TCGReg datalo, tcg_out_ld32_12(s, COND_AL, datalo, addrlo, 0); break; case MO_UQ: - /* Avoid ldrd for user-only emulation, to handle unaligned. */ - if (USING_SOFTMMU + /* LDRD requires alignment; double-check that. */ + if (get_alignment_bits(opc) >= MO_64 && (datalo & 1) == 0 && datahi == datalo + 1) { tcg_out_ldrd_8(s, COND_AL, datalo, addrlo, 0); } else if (datalo == addrlo) { @@ -1741,8 +1734,8 @@ static void tcg_out_qemu_st_index(TCGContext *s, ARMCond cond, MemOp opc, tcg_out_st32_r(s, cond, datalo, addrlo, addend); break; case MO_64: - /* Avoid strd for user-only emulation, to handle unaligned. */ - if (USING_SOFTMMU + /* STRD requires alignment; double-check that. */ + if (get_alignment_bits(opc) >= MO_64 && (datalo & 1) == 0 && datahi == datalo + 1) { tcg_out_strd_r(s, cond, datalo, addrlo, addend); } else { @@ -1773,8 +1766,8 @@ static void tcg_out_qemu_st_direct(TCGContext *s, MemOp opc, TCGReg datalo, tcg_out_st32_12(s, COND_AL, datalo, addrlo, 0); break; case MO_64: - /* Avoid strd for user-only emulation, to handle unaligned. */ - if (USING_SOFTMMU + /* STRD requires alignment; double-check that. */ + if (get_alignment_bits(opc) >= MO_64 && (datalo & 1) == 0 && datahi == datalo + 1) { tcg_out_strd_8(s, COND_AL, datalo, addrlo, 0); } else { -- 2.25.1