From nobody Sun Feb 8 22:58:00 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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 ARC-Seal: i=1; a=rsa-sha256; t=1713296583; cv=none; d=zohomail.com; s=zohoarc; b=jf+HtiTvCKONmAqLjUWY1bXwVHzB221sPKXbTiRLUW3ID1Cf3qLPhzNczw6pviPgl/2SGu7YXIE4/heoBHn7YhQV5fHHrnsW2xxx5WXp4bQNEvJjuhXqSj5krfVPAooSs4BziNUzQi85Y2+kiR+BNEPJ8l8XvV5dsRo7y/Yo69w= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1713296583; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=nIXT4Ow0ePHNvQiW4c64R7S9d8m6CFTE0ZLlfQRIw4w=; b=A+aWnuVjk33LBj8hmXp1QYgJ2HATXeks4z+2/XH03r+siU1w/0xdYOAA6/r/BhXrLbvnxpwTCe1VF7l1O7XB2WqKMXuQ3Ix+cEPd01trxpR6fXTqz4Gdg8rzn87n5wpr2w66TsLrXacoaUeb5U7Y/FZHoSbtY5Wslb1OvbOMn0o= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; 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 1713296583358265.9322025592503; Tue, 16 Apr 2024 12:43:03 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rwogf-0003J2-Fn; Tue, 16 Apr 2024 15:41:49 -0400 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 1rwoge-0003IJ-41 for qemu-devel@nongnu.org; Tue, 16 Apr 2024 15:41:48 -0400 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rwogb-00045I-P9 for qemu-devel@nongnu.org; Tue, 16 Apr 2024 15:41:47 -0400 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-1e3c3aa8938so30540625ad.1 for ; Tue, 16 Apr 2024 12:41:45 -0700 (PDT) Received: from grind.. ([2804:7f0:bdcd:fb00:6501:2693:db52:c621]) by smtp.gmail.com with ESMTPSA id h5-20020a170902704500b001e3c972c83bsm10160586plt.76.2024.04.16.12.41.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Apr 2024 12:41:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1713296504; x=1713901304; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=nIXT4Ow0ePHNvQiW4c64R7S9d8m6CFTE0ZLlfQRIw4w=; b=LJdXHhydNUPcBG2bNgcTSMO6VhAkgYelybgq/ziVH+dYgRo9CFM9osjaUx1Ti+vGtm IXOE7Ac5w9O0fLz9HCOuWaM0e2XI7KBD2X17YY8hSvqZNvnmRnaWCEg4WZBAbZuFs+11 4M6hTGf0TKrWPKb0F0FQJrtGyfMFVUnJ7S8SzraocNYfCTlOrKZa+tR4akko1UHKQ633 ppKdSDITAQNP4C1zLnQhSLHAhoe1czw3s5qAsqhzVms8imjbTx/nO7+RrGTJna0OVACS dOUqq0tIi2lerxMIwl1qfhxL8dVvFsSUQrUXQsytMLr+dKj3hz6EgSIWVYuwJug5kfp/ A03w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713296504; x=1713901304; 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:message-id:reply-to; bh=nIXT4Ow0ePHNvQiW4c64R7S9d8m6CFTE0ZLlfQRIw4w=; b=Wz7cOoRexefj/2G1wj9/3DQRJmWosrq4BE9teHCpLeU67A7WmxcA3/BUZknVvDp1QA wqvWpEqPJnW1GKctlFjBK1sXPEguo8lR+QftXjzqyJmrJa1Hau1CccV7+hWSqn5DPR8a vmQh3kejhYjC8Eu617KnU/68DCx4yqIke2LKtw4pV80E2T3CdPtRUkyuN4ptN9fIwyUo D7kGhaLZNHS/rfngqcUBEWdGDwhWwZO0GlJRNSvRbsN/skLKGat+bM9cl6hluajvkpS0 yWOk0U8kV5FaSrbEMVH5eLPid4wp4RmdigvngIupBB+FrXoDoI4j4FRPIUuOYNlBdIbm /ogg== X-Gm-Message-State: AOJu0YwjyayxMe03E+V0zNyIDhcHBnvXS0irBOAooaOUwXOwdY9NLjvd 4yWwvSbyEpjE2jMl2oU8dmC3gDwx9EMhzxKnq1FPnGpPBzmZoI5U9BmMVVKws2UCWvyerF71Sl2 N X-Google-Smtp-Source: AGHT+IG8lFONKE0bYSTjNnlkDB7gNgi017CmjRe3W4duWlr6iOdbUDUUvjfpZ2s8TRwDLnvAVmQAKQ== X-Received: by 2002:a17:903:26c3:b0:1e5:62:7aaa with SMTP id jg3-20020a17090326c300b001e500627aaamr10843183plb.20.1713296503815; Tue, 16 Apr 2024 12:41:43 -0700 (PDT) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org, liwei1518@gmail.com, zhiwei_liu@linux.alibaba.com, palmer@rivosinc.com, Daniel Henrique Barboza Subject: [PATCH for-9.1 v2 2/2] trans_privileged.c.inc: set (m|s)tval on ebreak breakpoint Date: Tue, 16 Apr 2024 16:41:32 -0300 Message-ID: <20240416194132.1843699-3-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240416194132.1843699-1-dbarboza@ventanamicro.com> References: <20240416194132.1843699-1-dbarboza@ventanamicro.com> 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::62e; envelope-from=dbarboza@ventanamicro.com; helo=mail-pl1-x62e.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: 2.1.29 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-ZohoMail-DKIM: pass (identity @ventanamicro.com) X-ZM-MESSAGEID: 1713296585190100003 Content-Type: text/plain; charset="utf-8" Privileged spec section 4.1.9 mentions: "When a trap is taken into S-mode, stval is written with exception-specific information to assist software in handling the trap. (...) If stval is written with a nonzero value when a breakpoint, address-misaligned, access-fault, or page-fault exception occurs on an instruction fetch, load, or store, then stval will contain the faulting virtual address." A similar text is found for mtval in section 3.1.16. Setting mtval/stval in this scenario is optional, but some softwares read these regs when handling ebreaks. Write 'badaddr' in all ebreak breakpoints to write the appropriate 'tval' during riscv_do_cpu_interrrupt(). Signed-off-by: Daniel Henrique Barboza --- target/riscv/insn_trans/trans_privileged.c.inc | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/target/riscv/insn_trans/trans_privileged.c.inc b/target/riscv/= insn_trans/trans_privileged.c.inc index 620ab54eb0..b89e3bd5b5 100644 --- a/target/riscv/insn_trans/trans_privileged.c.inc +++ b/target/riscv/insn_trans/trans_privileged.c.inc @@ -62,6 +62,10 @@ static bool trans_ebreak(DisasContext *ctx, arg_ebreak *= a) if (pre =3D=3D 0x01f01013 && ebreak =3D=3D 0x00100073 && post =3D=3D 0= x40705013) { generate_exception(ctx, RISCV_EXCP_SEMIHOST); } else { + TCGv temp =3D tcg_temp_new(); + tcg_gen_movi_tl(temp, ebreak_addr); + tcg_gen_st_tl(temp, tcg_env, offsetof(CPURISCVState, badaddr)); + generate_exception(ctx, RISCV_EXCP_BREAKPOINT); } return true; --=20 2.44.0