From patchwork Fri Feb 2 15:36:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 1894658 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=gU2miu2P; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TRKgF712Tz1yQ0 for ; Sat, 3 Feb 2024 02:38:33 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rVvau-00008j-D5; Fri, 02 Feb 2024 10:36:44 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rVvas-000067-2r for qemu-devel@nongnu.org; Fri, 02 Feb 2024 10:36:42 -0500 Received: from mail-lf1-x134.google.com ([2a00:1450:4864:20::134]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rVvaq-0004Qu-Gy for qemu-devel@nongnu.org; Fri, 02 Feb 2024 10:36:41 -0500 Received: by mail-lf1-x134.google.com with SMTP id 2adb3069b0e04-5113e895660so77666e87.0 for ; Fri, 02 Feb 2024 07:36:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1706888199; x=1707492999; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=QRkC6R0A/Ijw4AEfBzkD0qNh2L8zWNNbkytmxmpXoIc=; b=gU2miu2P7k7oQubb/N2xRy5//kpVWeCfItUx0o3bso+9Kp+W/fTpYnxYpYzrKPciW1 g+EyYIurLAeP9UBM53YltsFACJnimnqehCXy1vtkBcJ/OD5UWF423wXBLie1S/g8f8Zz 52M0CnP4I58jaSMkP9BYcQnlL9jv0sOQFT9ZXDpThsSeBivKVd/N0vfTJixukNXpjqP5 HamczlptatubjCKAfXMWlGL4mZTCf5NGyHQddxc/+VKn6xCuowfncsn+Z159hKl7yK+j iztd7eN7AAztW13R4DdHa7iai8JYTV1alNHsv57Kl0G6toxK53jxVWIv1A60EnPdw4oW T7Tw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706888199; x=1707492999; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QRkC6R0A/Ijw4AEfBzkD0qNh2L8zWNNbkytmxmpXoIc=; b=Mssz7xn6eKMChls9Do9TVnT8OrtRvCbn8fFapkjuxJVzkTz8ifPwFwJkup+jKKCz4A KyE5Mj2EwB6795oWxZ77z6JoN/rO6J2nHwLm3HUH120VJHgi5ROqKl/xMfSbCvuzLVK4 mCRG7iPTb5e6NaTYjinTM6XtLVm1Z/bngS5X8NLij4NLx+cf7gDon70KUIS+iMHHBmwz 7QosW3Ujs97mkYhGyAzH6g3c8DibH+87bXG4yALXvmak6Ymmwxf/SDfFoGR/XZY6Z/a0 RF6yVP9EpxmhlsfuwLnGwbZ5pHRCaxwl/Ff9IWjpu00K62aqnbOmnPPIOUVZlW36mrcZ gsWQ== X-Gm-Message-State: AOJu0YzEZh9OhSxqApQtgroglVp2p6B6mLI7TERRKr/qPpVly96OFi2x cFAQX7iCNOAsdVrSyEiiuJ78uCR3dIUsqA1wlruwLgxCq2FouTd8DTjaqB183WuWNSV/nQ1wuE+ 6 X-Google-Smtp-Source: AGHT+IHFR30meajtkVe46CiVUIqFDI83OgR7aQCJY2+NIyZbuIy9vXr5yrN321+7fWIzlPFpI5r4Xg== X-Received: by 2002:ac2:5ed9:0:b0:511:325a:948b with SMTP id d25-20020ac25ed9000000b00511325a948bmr1652424lfq.30.1706888198784; Fri, 02 Feb 2024 07:36:38 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id k2-20020a05600c1c8200b0040fafd84095sm214735wms.41.2024.02.02.07.36.38 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Feb 2024 07:36:38 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 01/36] target/arm: fix exception syndrome for AArch32 bkpt insn Date: Fri, 2 Feb 2024 15:36:02 +0000 Message-Id: <20240202153637.3710444-2-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240202153637.3710444-1-peter.maydell@linaro.org> References: <20240202153637.3710444-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::134; envelope-from=peter.maydell@linaro.org; helo=mail-lf1-x134.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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Jan Klötzke Debug exceptions that target AArch32 Hyp mode are reported differently than on AAarch64. Internally, Qemu uses the AArch64 syndromes. Therefore such exceptions need to be either converted to a prefetch abort (breakpoints, vector catch) or a data abort (watchpoints). Cc: qemu-stable@nongnu.org Signed-off-by: Jan Klötzke Reviewed-by: Richard Henderson Message-id: 20240127202758.3326381-1-jan.kloetzke@kernkonzept.com Signed-off-by: Peter Maydell --- target/arm/syndrome.h | 8 ++++++++ target/arm/helper.c | 18 ++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/target/arm/syndrome.h b/target/arm/syndrome.h index 1a49767479f..3244e0740dd 100644 --- a/target/arm/syndrome.h +++ b/target/arm/syndrome.h @@ -25,6 +25,8 @@ #ifndef TARGET_ARM_SYNDROME_H #define TARGET_ARM_SYNDROME_H +#include "qemu/bitops.h" + /* Valid Syndrome Register EC field values */ enum arm_exception_class { EC_UNCATEGORIZED = 0x00, @@ -80,6 +82,7 @@ typedef enum { SME_ET_InactiveZA, } SMEExceptionType; +#define ARM_EL_EC_LENGTH 6 #define ARM_EL_EC_SHIFT 26 #define ARM_EL_IL_SHIFT 25 #define ARM_EL_ISV_SHIFT 24 @@ -94,6 +97,11 @@ static inline uint32_t syn_get_ec(uint32_t syn) return syn >> ARM_EL_EC_SHIFT; } +static inline uint32_t syn_set_ec(uint32_t syn, uint32_t ec) +{ + return deposit32(syn, ARM_EL_EC_SHIFT, ARM_EL_EC_LENGTH, ec); +} + /* * Utility functions for constructing various kinds of syndrome value. * Note that in general we follow the AArch64 syndrome values; in a diff --git a/target/arm/helper.c b/target/arm/helper.c index 945d8571a61..a0041aa0ec7 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -11015,6 +11015,24 @@ static void arm_cpu_do_interrupt_aarch32(CPUState *cs) } if (env->exception.target_el == 2) { + /* Debug exceptions are reported differently on AArch32 */ + switch (syn_get_ec(env->exception.syndrome)) { + case EC_BREAKPOINT: + case EC_BREAKPOINT_SAME_EL: + case EC_AA32_BKPT: + case EC_VECTORCATCH: + env->exception.syndrome = syn_insn_abort(arm_current_el(env) == 2, + 0, 0, 0x22); + break; + case EC_WATCHPOINT: + env->exception.syndrome = syn_set_ec(env->exception.syndrome, + EC_DATAABORT); + break; + case EC_WATCHPOINT_SAME_EL: + env->exception.syndrome = syn_set_ec(env->exception.syndrome, + EC_DATAABORT_SAME_EL); + break; + } arm_cpu_do_interrupt_aarch32_hyp(cs); return; }