From nobody Tue Nov 26 10:23:11 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1708552138534404.59044092218164; Wed, 21 Feb 2024 13:48:58 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rcuRE-0000kw-E5; Wed, 21 Feb 2024 16:47:36 -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 1rcuRD-0000kP-1o; Wed, 21 Feb 2024 16:47:35 -0500 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rcuRB-0007LA-5K; Wed, 21 Feb 2024 16:47:34 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 323874F860; Thu, 22 Feb 2024 00:47:46 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id CF522869E1; Thu, 22 Feb 2024 00:47:23 +0300 (MSK) Received: (nullmailer pid 2339835 invoked by uid 1000); Wed, 21 Feb 2024 21:47:23 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, =?UTF-8?q?Jan=20Kl=C3=B6tzke?= , Richard Henderson , Peter Maydell , Michael Tokarev Subject: [Stable-7.2.10 04/33] target/arm: fix exception syndrome for AArch32 bkpt insn Date: Thu, 22 Feb 2024 00:46:47 +0300 Message-Id: <20240221214723.2339742-4-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1708552140742100003 From: Jan Kl=C3=B6tzke 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 Kl=C3=B6tzke Reviewed-by: Richard Henderson Message-id: 20240127202758.3326381-1-jan.kloetzke@kernkonzept.com Signed-off-by: Peter Maydell (cherry picked from commit f670be1aad33e801779af580398895b9455747ee) Signed-off-by: Michael Tokarev diff --git a/target/arm/helper.c b/target/arm/helper.c index 02cfeece45..343acfab3a 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -9836,6 +9836,24 @@ static void arm_cpu_do_interrupt_aarch32(CPUState *c= s) } =20 if (env->exception.target_el =3D=3D 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 =3D syn_insn_abort(arm_current_el(env)= =3D=3D 2, + 0, 0, 0x22); + break; + case EC_WATCHPOINT: + env->exception.syndrome =3D syn_set_ec(env->exception.syndrome, + EC_DATAABORT); + break; + case EC_WATCHPOINT_SAME_EL: + env->exception.syndrome =3D syn_set_ec(env->exception.syndrome, + EC_DATAABORT_SAME_EL); + break; + } arm_cpu_do_interrupt_aarch32_hyp(cs); return; } diff --git a/target/arm/syndrome.h b/target/arm/syndrome.h index 15334a3d15..75a3327a30 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 =20 +#include "qemu/bitops.h" + /* Valid Syndrome Register EC field values */ enum arm_exception_class { EC_UNCATEGORIZED =3D 0x00, @@ -76,6 +78,7 @@ typedef enum { SME_ET_InactiveZA, } SMEExceptionType; =20 +#define ARM_EL_EC_LENGTH 6 #define ARM_EL_EC_SHIFT 26 #define ARM_EL_IL_SHIFT 25 #define ARM_EL_ISV_SHIFT 24 @@ -87,6 +90,11 @@ static inline uint32_t syn_get_ec(uint32_t syn) return syn >> ARM_EL_EC_SHIFT; } =20 +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 --=20 2.39.2