From patchwork Tue Sep 13 14:28:17 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 605282 Delivered-To: patch@linaro.org Received: by 2002:ab3:1c02:0:b0:1e7:4ce8:c350 with SMTP id u2csp116804lth; Tue, 13 Sep 2022 07:35:58 -0700 (PDT) X-Google-Smtp-Source: AA6agR5G/GgcVpxsxEFHbDWWeQJScVpVDAqV0EaG2JMYjxIgXgGeIQhNUeoartyMWcn83KDoU9oe X-Received: by 2002:a05:6214:1c88:b0:473:fdc2:bf4 with SMTP id ib8-20020a0562141c8800b00473fdc20bf4mr27594252qvb.81.1663079758135; Tue, 13 Sep 2022 07:35:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1663079758; cv=none; d=google.com; s=arc-20160816; b=ScjSBKUpwQ9bcYVK3Zo7sQVn26Zwm89Vyavq86LdtLnO4ZmkeIx05RUX/ArX2Waatl 3pUqPrhKo4j22SGMUidb0hI1Btmq/0YPBdT7F6yBrvshwZbD/QT+IuvFgEfnIGYCOofk EUmYo+v47zuoUVqMUTkbtND1rum+BAuV1ddWShUdDCUT+44aVZ8U8lExaC0569s+pFBQ 6L5o0t5kmgRagXmMVlQ5m6Ms4F0ODe84SrU8wFe70WJPLOkOTfbatP9I+dzC3iHL2eU4 +k4xSI5DR38o/hRh/RU9YwW/ATgJH248dt5mtaULSRBUFJI+qaCmkoRsPYm/byQVGnzW lddg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=LabXsfMoB7femwXbme12AwMySpTk+r3xGFXtank1s5U=; b=nu1FAkRrp6wSSQnGhbGZVQS6xSevjvPjJ8OHRUxJAtxY4XhNYhT/c92hjtToXIFT3E PgTJVTXY9R1vmkBbBR/N87Wek4BNje9fe1VnNeRgJWJN2RK0miEEbgKgd45uwiMwH2G+ SBx9alNKm8DLctNKDksTPK7gxW+JBgcXhQuH4s05/IKHBRBZzHHnzEI2OvxjsxIuAs7o GPJuhsLsv5Ahzu9Gg7FcOmOjCvFRgJMOlA0KWFkRDZGNhEAZxurETTw7Ejusf7Sc/osz GRDyaixqu7Hukw/fFubo8zxk8rxUaTAr+3LD4bpEBxUqNyCC9bIW1W0iUuYS6ESwnDwQ ByQw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=z8W58EH9; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id f1-20020a056214076100b004992416128esi6365193qvz.123.2022.09.13.07.35.57 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 13 Sep 2022 07:35:58 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=z8W58EH9; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:47034 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oY713-0000V6-GU for patch@linaro.org; Tue, 13 Sep 2022 10:35:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50678) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oY6tn-0003pQ-Oo for qemu-devel@nongnu.org; Tue, 13 Sep 2022 10:28:28 -0400 Received: from mail-wm1-x330.google.com ([2a00:1450:4864:20::330]:45900) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oY6tl-0006xv-95 for qemu-devel@nongnu.org; Tue, 13 Sep 2022 10:28:26 -0400 Received: by mail-wm1-x330.google.com with SMTP id bd26-20020a05600c1f1a00b003a5e82a6474so9615788wmb.4 for ; Tue, 13 Sep 2022 07:28:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=LabXsfMoB7femwXbme12AwMySpTk+r3xGFXtank1s5U=; b=z8W58EH9OVRCLspmjAZGsafZeIVCIZ7w7mwgdirng21h9BV5Br3xEGwAQ6ZZCGYLtk YcrLxiVgWULlwGhivfvrwr09Yalj+IrrQGgSVbTD0sfdZ7R9DSX25hUVuXJf2Dt8giu9 y542NvD6wZX4Ib6EFrDvnuOD4DUHanjWWpgJ+T7F5+1S3zyFMu5yUPzhaA+BupGwsTuh FTwjBRYHEcBsWghV0sJafF0fmuH5ID+ADOBofLbnm48hqccsss3AjeViN7lMRiXqflvv qdhqU7WNFKkOsZxkXBVxbZ9JpIyqtcyBW1Eg8vOlEq+Xbu2A9gjlwaD7X/6HPZijD9J1 dXBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=LabXsfMoB7femwXbme12AwMySpTk+r3xGFXtank1s5U=; b=eKH1L//KpC5LLgE+rwGGRcC6aIAYSpPE0dePToFnIIh1JN7lmAkN9g+L4dWehSZEUp q9QH3z+Hmh1R17pBJ+sjHMD4eCUWSgwTaZkSDFTOESuQAyRSz+uMS422Cu+YSvTRI6oW FA+djXSQRVneRCPxsJvRlvMKOaEtTYVksFnyK4aN8iiw9+FZ6sQWogg4UcfYKje7U8DQ k9+LKOM7CGFOctO5RCVpsNEoHg9hXPraQWekUOSmjx/Vpyv3RmbRoZHZdrBg+5acdG+q Wo53PqizzRUQ+1rtxTlx3WlwLRUKJ4AigOvDdwgyBUXBxUqd1ckDyKOSUCXpsilUongG u8QA== X-Gm-Message-State: ACgBeo3YmYZrnPA8fF5ORZeaDdTYpzerE14DjlGPuh8rOZLn5kyjkdeu kwVUy+Hn/6q0CoZkJwuOGTwRSJjrsMfPBfW8 X-Received: by 2002:a05:600c:34d6:b0:3b4:91fd:cfc with SMTP id d22-20020a05600c34d600b003b491fd0cfcmr2697359wmq.1.1663079303823; Tue, 13 Sep 2022 07:28:23 -0700 (PDT) Received: from stoup.. ([89.101.193.68]) by smtp.gmail.com with ESMTPSA id e17-20020a5d5951000000b00228dc37ce2asm10673165wri.57.2022.09.13.07.28.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Sep 2022 07:28:23 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: laurent@vivier.eu, mark.cave-ayland@ilande.co.uk Subject: [PATCH 1/2] target/m68k: Fix MACSR to CCR Date: Tue, 13 Sep 2022 15:28:17 +0100 Message-Id: <20220913142818.7802-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220913142818.7802-1-richard.henderson@linaro.org> References: <20220913142818.7802-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::330; envelope-from=richard.henderson@linaro.org; helo=mail-wm1-x330.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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" First, we were writing to the entire SR register, instead of only the flags portion. Second, we were not clearing C as per the documentation (X was cleared via the 0xf mask). Signed-off-by: Richard Henderson Reviewed-by: Laurent Vivier --- target/m68k/translate.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 5098f7e570..87044382c3 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -5892,8 +5892,10 @@ DISAS_INSN(from_mext) DISAS_INSN(macsr_to_ccr) { TCGv tmp = tcg_temp_new(); - tcg_gen_andi_i32(tmp, QREG_MACSR, 0xf); - gen_helper_set_sr(cpu_env, tmp); + + /* Note that X and C are always cleared. */ + tcg_gen_andi_i32(tmp, QREG_MACSR, CCF_N | CCF_Z | CCF_V); + gen_helper_set_ccr(cpu_env, tmp); tcg_temp_free(tmp); set_cc_op(s, CC_OP_FLAGS); } From patchwork Tue Sep 13 14:28:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 605280 Delivered-To: patch@linaro.org Received: by 2002:ab3:1c02:0:b0:1e7:4ce8:c350 with SMTP id u2csp112988lth; Tue, 13 Sep 2022 07:30:05 -0700 (PDT) X-Google-Smtp-Source: AA6agR5CghrITH2igmztPDEixwptrP1VYg8vRqey2Ut2U1gVMi0T5DpD4iEvzDaOpS9xAziZU+DX X-Received: by 2002:ad4:5bc7:0:b0:4ac:b800:d285 with SMTP id t7-20020ad45bc7000000b004acb800d285mr8179321qvt.20.1663079404843; Tue, 13 Sep 2022 07:30:04 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1663079404; cv=none; d=google.com; s=arc-20160816; b=XPS37j2unfttc7JOPLnvVj4bt6wc+gNXkj/UF4CeJ9Fb804RzqjC/VuuyF2bgVh8aJ cn08b+s9+rLz/+Bp1Bjxd0jWdfyh6aaxzggcAnfRh10cjH7MWHqnnwYxa0irdHd7YhUC lOtse8IzqilOgOeVHzR7cYT9EQ0bitdV2Mkvy+ssZiJxlrMaZ1fy5rt8ZCilzd4/vOh7 EHjiOajqZyg5bx4sxw0B+98HbxDN6ky0Gas5l/eSLgQKv6z0t5r3Nt8+56o/+xRSLzWC eTthpvmSD8FaFgtzZytkUJZppBJXpmEaDwmXi/kped7yeQIWcH/3KqVtnB3duKI0B0dq UADQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=sw9CQ87TLvgANwDy6abBvcyo5irfX7fP8stttGLcdDM=; b=ssgLL2eZ7j324DxAjZ3UmTNfR79cgpqPaZPu1llzZz/Co5gveg0nt3T7H9cIt3gqf9 PJOsKOJA1Lvut4USpW+O6WSz6pezfAyN5FOsJJVY+Rxr0Is6TVmm3UqwEyRdid4EQTg0 kjw2iHM/QNgzUDVMtVrfXumtbl8Cflb0GoMoEAMtUj0k/XcG5OU9nJcCHU7PfEi2F7zd OcJaKOJnw17Md0taWHAQlEP/sNW7c91bkAVkSoN0n287hakSq2sRAaZ5QCyRSZ5gi5/5 qbvI3O/FWmHsNCP5BLXh5JMCXQjiA9CmMr7FBgmS8d1uO1XBlA9jJ8RrF5C+lIZ/lcQs 2r0Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=IjSl43sb; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id bt11-20020ac8690b000000b0035c12b79c9fsi927628qtb.605.2022.09.13.07.30.04 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 13 Sep 2022 07:30:04 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=IjSl43sb; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:59562 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oY6vM-0003wg-Bd for patch@linaro.org; Tue, 13 Sep 2022 10:30:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50680) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oY6tp-0003qR-S7 for qemu-devel@nongnu.org; Tue, 13 Sep 2022 10:28:29 -0400 Received: from mail-wr1-x433.google.com ([2a00:1450:4864:20::433]:37458) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oY6tn-0006y3-G9 for qemu-devel@nongnu.org; Tue, 13 Sep 2022 10:28:28 -0400 Received: by mail-wr1-x433.google.com with SMTP id bq9so21111325wrb.4 for ; Tue, 13 Sep 2022 07:28:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=sw9CQ87TLvgANwDy6abBvcyo5irfX7fP8stttGLcdDM=; b=IjSl43sbQbPKI92aqnMoytT9oYVF3syNGCcrgAwKIOwERLCMYVj11siNjrxdfazlNX G2+i6807civLmaMlUvC8dA+DElx7nEBnNXz5hq9nd6714pkKAhvkhropUKuaFEJb6CDQ z5UNReLJQuDyUU7xVSMII77+m19aPjENpI6IaMJW7OFfzte971vdQAMH/RKLU+M3Gcr1 Go4906GcJ8/Vv4MuwkmsI1bRep52mKyrvudcgfTps9WlN9k5TqTzGfutWZr8RxsoccnA z93Hff6r0hwttYul0wxiCxM9cb0kiSdVh/dj+LvKn5kVD9Mxyyl2Qa4RLXymd4Iw0TQz apyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=sw9CQ87TLvgANwDy6abBvcyo5irfX7fP8stttGLcdDM=; b=eTEKESbNG25JWCYL1fMxXDPrrl64+py775q4I9EkWn6ZKrBAopIWdkDMkZD1pqTVl6 JSFrEzMKK8Qf53lSkowlX1u+1d3vjteDOGLv5Zna612JqaLwVIYZpQOMHrMNKiV7fHty jcgUBzcc4LJEXvrI14mEYoYzEGsK4G7ch+vmpeOU4XNetTknMb03obsxzo4c2oqVj4Qw Et6AueYGbrngS72WJMyyAY7zfZjjg4HNviotrNv9TSMlg0YaYBktr/g13sAegDJijtIv Ol20XmPy0jxlgXSNsj68a+/FSjgCg5J6JNu+J0p+AqNKQ75i/vxRa/diE2iKA5Xp6rqD 2KwA== X-Gm-Message-State: ACgBeo3/EkTVKb875RwKQmQfSGF/YYv+DNfutL2gTDiJ0qA/qlu8TV8k 5giBr+yB1rlByMPVSY6rGTIMuUllRo01qoMz X-Received: by 2002:a5d:650e:0:b0:228:b09e:de9a with SMTP id x14-20020a5d650e000000b00228b09ede9amr19420028wru.360.1663079305627; Tue, 13 Sep 2022 07:28:25 -0700 (PDT) Received: from stoup.. ([89.101.193.68]) by smtp.gmail.com with ESMTPSA id e17-20020a5d5951000000b00228dc37ce2asm10673165wri.57.2022.09.13.07.28.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Sep 2022 07:28:25 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: laurent@vivier.eu, mark.cave-ayland@ilande.co.uk Subject: [PATCH 2/2] target/m68k: Perform writback before modifying SR Date: Tue, 13 Sep 2022 15:28:18 +0100 Message-Id: <20220913142818.7802-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220913142818.7802-1-richard.henderson@linaro.org> References: <20220913142818.7802-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=richard.henderson@linaro.org; helo=mail-wr1-x433.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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Writes to SR may change security state, which may involve a swap of %ssp with %usp as reflected in %a7. Finish the writeback of %sp@+ before swapping stack pointers. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1206 Signed-off-by: Richard Henderson Reviewed-by: Laurent Vivier Reviewed-by: Mark Cave-Ayland --- target/m68k/translate.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/target/m68k/translate.c b/target/m68k/translate.c index 87044382c3..8506da0a0b 100644 --- a/target/m68k/translate.c +++ b/target/m68k/translate.c @@ -2285,9 +2285,9 @@ static void gen_set_sr_im(DisasContext *s, uint16_t val, int ccr_only) tcg_gen_movi_i32(QREG_CC_N, val & CCF_N ? -1 : 0); tcg_gen_movi_i32(QREG_CC_X, val & CCF_X ? 1 : 0); } else { - TCGv sr = tcg_const_i32(val); - gen_helper_set_sr(cpu_env, sr); - tcg_temp_free(sr); + /* Must writeback before changing security state. */ + do_writebacks(s); + gen_helper_set_sr(cpu_env, tcg_constant_i32(val)); } set_cc_op(s, CC_OP_FLAGS); } @@ -2297,6 +2297,8 @@ static void gen_set_sr(DisasContext *s, TCGv val, int ccr_only) if (ccr_only) { gen_helper_set_ccr(cpu_env, val); } else { + /* Must writeback before changing security state. */ + do_writebacks(s); gen_helper_set_sr(cpu_env, val); } set_cc_op(s, CC_OP_FLAGS);