From nobody Sat Nov 23 20:18:06 2024 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; dmarc=pass(p=none dis=none) header.from=gmail.com ARC-Seal: i=1; a=rsa-sha256; t=1730346942; cv=none; d=zohomail.com; s=zohoarc; b=LU7Y8YVdTqlzRN+CfbColsX8eTtVfg1Fj03a/OYg7VmGE25xWDhL3WqxXMvL8LZgSa0yC43YoPqJc8YOHxyI2FiU3DnCK4NAq2LkWD/bqZfnZQ0/iz6vud95Fl9bZ9Wfft88RfeWfhbRgrUvs7Wq4f2jDr2lvm8WjrnPx3aV99o= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1730346942; 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=2Yu9l8eltS3GqEhoKZQqPKNc4z7ST450TJjjoaz/+KI=; b=Xm1Oz0gX71ZkSKDWsRO5KQz/abLi94m/mUxDcvgQ0/Fefc+gyNNXGLlk/NzVeTa8+kpdfHTaTvOVQ54JhxsBn9wALO1iG2lj6yJU77TCA6i4ds9ajgY+uMTjBzOLLN8xDPOLHfOBnSy0ymavnqeJ0W4emTWNIOMm+wmWEzwCZIc= 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; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1730346942335390.39870133789805; Wed, 30 Oct 2024 20:55:42 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t6MFa-0007Cz-Js; Wed, 30 Oct 2024 23:53:34 -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 1t6MFY-0007CT-VC for qemu-devel@nongnu.org; Wed, 30 Oct 2024 23:53:32 -0400 Received: from mail-pl1-x62b.google.com ([2607:f8b0:4864:20::62b]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1t6MFX-0003sN-Ee for qemu-devel@nongnu.org; Wed, 30 Oct 2024 23:53:32 -0400 Received: by mail-pl1-x62b.google.com with SMTP id d9443c01a7336-20e576dbc42so5428675ad.0 for ; Wed, 30 Oct 2024 20:53:31 -0700 (PDT) Received: from toolbox.alistair23.me (2403-580b-97e8-0-82ce-f179-8a79-69f4.ip6.aussiebb.net. [2403:580b:97e8:0:82ce:f179:8a79:69f4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21105707064sm3022795ad.70.2024.10.30.20.53.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Oct 2024 20:53:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1730346810; x=1730951610; 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=2Yu9l8eltS3GqEhoKZQqPKNc4z7ST450TJjjoaz/+KI=; b=iS5TvKBsOhi9zWeB0u+3ytwXryYYstuvzyXuFNHkMr+nLo94EA06tQhbjUrLiCl/CX wf3DPyafoUHLCoRFqlrj+4lllgV7I+/OKUdRsLL8xHf8QrOd0MTpU47tIy9GIBaB0iq1 iCZmORX4s4dRtWF66FUZpeNGFZ9HxVuR+o+qu8nSQLXIrO/r8nifsM4uf58anG4m2DAN umUY4BqmQvpbdDG7p2Un8axytBimE16DorfvB9aj1jGjInpoHd762QDTdathD0ls7wvp /Uwo4edvS/qsGDG3noBLkC/w+CQvpTrEKta7I2gubXg8z+HUFZIviaOnknGVFyWfC85Z ikQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730346810; x=1730951610; 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=2Yu9l8eltS3GqEhoKZQqPKNc4z7ST450TJjjoaz/+KI=; b=R/h+E3fTKgfzeRfvJ3+YuKwELVN+7t7tZnRZ/B9hLct4RwbxFzLDjza6NwVLmPrgmj b9TfXKG0tviSqWxhzDfCS9TYwQ/2yOrDOjC4/Q0Yyt1uA7ngxGnEyn9z8UJjg62N6lsJ 4hS/517+4rVOBU/tpp4O93WTG5YrKn+4RBcVFD05r3MvpnZYa9dD3o4YkP7vlRB0greL zREJ3ENHQkvypwYj7d2L8MLersUv+6Koabr5SHvbh6WmNjVx/nhFWN8NnfxXD+dbaZDd G6fudePf5tXBjJE/LSpz4oiRLV06ANEWmIZ0MBlbKLrwrRzhshI2p+mk1tMWqd2Q7trE Rghw== X-Gm-Message-State: AOJu0Yzc/J+JU+z77PxzZzBBrNzNri6sU8vyq9jy8u/Xbm0dXsD6rISU 2sMbZmsDGQ1chuMLXF12EgBk6q3Sjk8Lxl7OB9G/15R77djFxafRh7XC/p08 X-Google-Smtp-Source: AGHT+IFFB9xchlzOCWRmRZ2W5AiaX/XDaU6oladBNFYEAsroF6ZGljbN8tZ0bPoAIJGoQmJsYJComQ== X-Received: by 2002:a17:902:c943:b0:20c:d072:c89a with SMTP id d9443c01a7336-21103ccbe1dmr20630715ad.59.1730346809712; Wed, 30 Oct 2024 20:53:29 -0700 (PDT) From: Alistair Francis X-Google-Original-From: Alistair Francis To: qemu-devel@nongnu.org Cc: alistair23@gmail.com, Evgenii Prokopiev , Daniel Henrique Barboza , Alistair Francis Subject: [PULL 01/50] target/riscv/csr.c: Fix an access to VXSAT Date: Thu, 31 Oct 2024 13:52:29 +1000 Message-ID: <20241031035319.731906-2-alistair.francis@wdc.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241031035319.731906-1-alistair.francis@wdc.com> References: <20241031035319.731906-1-alistair.francis@wdc.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::62b; envelope-from=alistair23@gmail.com; helo=mail-pl1-x62b.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1730346944635116600 Content-Type: text/plain; charset="utf-8" From: Evgenii Prokopiev The register VXSAT should be RW only to the first bit. The remaining bits should be 0. The RISC-V Instruction Set Manual Volume I: Unprivileged Architecture The vxsat CSR has a single read-write least-significant bit (vxsat[0]) that indicates if a fixed-point instruction has had to saturate an output value to fit into a destination format. Bits vxsat[XLEN-1:1] should be written as zeros. Signed-off-by: Evgenii Prokopiev Reviewed-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Message-ID: <20241002084436.89347-1-evgenii.prokopiev@syntacore.com> Signed-off-by: Alistair Francis --- target/riscv/csr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index ea3560342c..c88ee1265e 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -734,7 +734,7 @@ static RISCVException write_vxrm(CPURISCVState *env, in= t csrno, static RISCVException read_vxsat(CPURISCVState *env, int csrno, target_ulong *val) { - *val =3D env->vxsat; + *val =3D env->vxsat & BIT(0); return RISCV_EXCP_NONE; } =20 @@ -744,7 +744,7 @@ static RISCVException write_vxsat(CPURISCVState *env, i= nt csrno, #if !defined(CONFIG_USER_ONLY) env->mstatus |=3D MSTATUS_VS; #endif - env->vxsat =3D val; + env->vxsat =3D val & BIT(0); return RISCV_EXCP_NONE; } =20 --=20 2.47.0