From nobody Mon Feb 9 22:19:09 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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=1601406966; cv=none; d=zohomail.com; s=zohoarc; b=Wi4Q28I5bZf2CoqlBjB1zeRNVmjYvvAiIo4tCAWkn/vo88qib6Ur8iuhGTRL4DR6NwKVj5M1eXA8KobcghtDgn3XmB6OXRsrgx2JCiSH89ibFW5ZxfVjoaypBCfquUwUhLeAJx5ftWR6Roc4Ms4xfcaHI+fDH8NJ+qwyID1BwAI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1601406966; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=qr4sSpwGfpTNQGz8iCK/HJSLAiX1hYwcM40uCGSXJPk=; b=IUzZywBe3wYQPq0gVrTUO+pJwmgDFBiubFe6CjFm4j1yDmb30Wlgsg5nWFPm/Pp0APEeTaEf3FyjGoVonJFzIe3am1W0Twpj+HcL6iadb9sZKNffRnK0RcampVSS2u/RaCOPs/2FMTwRPXCROuV/l05F7xJhj4CLR5uNmIdPhJI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; 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 1601406966246852.9782836878946; Tue, 29 Sep 2020 12:16:06 -0700 (PDT) Received: from localhost ([::1]:60472 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kNL6Z-0006by-DN for importer@patchew.org; Tue, 29 Sep 2020 15:16:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43338) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kNKwZ-0002if-F6 for qemu-devel@nongnu.org; Tue, 29 Sep 2020 15:05:43 -0400 Received: from mail-pj1-x102c.google.com ([2607:f8b0:4864:20::102c]:51259) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kNKwX-0001nm-NX for qemu-devel@nongnu.org; Tue, 29 Sep 2020 15:05:43 -0400 Received: by mail-pj1-x102c.google.com with SMTP id l18so42970pjz.1 for ; Tue, 29 Sep 2020 12:05:41 -0700 (PDT) Received: from localhost.localdomain (122-116-72-36.HINET-IP.hinet.net. [122.116.72.36]) by smtp.gmail.com with ESMTPSA id v8sm6003950pgg.58.2020.09.29.12.05.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Sep 2020 12:05:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=qr4sSpwGfpTNQGz8iCK/HJSLAiX1hYwcM40uCGSXJPk=; b=VgxqDtv/HbIrGFNNA+kmzF4IHuyyAL1Y4Lsi/GYuqyZo7QMauyx0KCJryBHQ3a7Sde INJw28CCttRotHtZ0nmiYRhWnS+O4ZjtM35PV6pkP0d56oh42sgVLiCzXjp6LNl2mcfF vD8wKS2QJDQ+c8QmvjfMe5T9ZULJZlaPxoRpPzrAWiDQFtRtapGIkasjv8/60Q/VcWFm vrjYKFjB/BJDKWOkZnXuwL9eQyX6/tCHkSBMPzBrkMFzR/2Q7vxPPRe61sOEfJdpPapB OIIWuOL8mDWg77AtDj9I34We49E4AW2t0o9lAOmUITQIxGqDqF5wl34X0jFtPClKx8pj aLwA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=qr4sSpwGfpTNQGz8iCK/HJSLAiX1hYwcM40uCGSXJPk=; b=gvGJ1KCaXyIKFAx5IgTdWEUqHXVmzwTc+ChB4wlPiGFRZF2UtoRZLtD7WJ5VW0gDcO /QhRwMymp0CxTu0F+vl2ayx54wSC4GyzdyCuTUfLP6Mzkyo0Bi3n+LI7ZpKlEXkY6BLp w/zsiPUu6LwwtkjVGlBu0QAtqVOQs5N/xnaHJff/zEDSkcGEQ0zW6d0aU/MGuKb6vXPD ryu5FHnXpJHC6gLpbFmeH0FSqcLazwro6UONAjVaH/xjKjW5GDaKEo6SDhrGxw+nEDqz MV4fqg6p0AE4EyuOPS7R35gvxIR364d2iSd8ql43g8gkhMRs4XojwD4+FNVNtGHFMqrC cKbw== X-Gm-Message-State: AOAM533kBZusSFQZSF8iPdN0irXp/gMEfjmUcpZsQCuDg6sh04f42gao TjjdAf3FIPjM94MW1PtvPsnKZ5lsxjQhaQ== X-Google-Smtp-Source: ABdhPJwRy8MQnESV4pMvfzA3LIMScTfbC0K3QujQsY1KWIdEeDWZHOoNAV+bULpSefo9TR+08oG4YQ== X-Received: by 2002:a17:90a:d504:: with SMTP id t4mr4925331pju.161.1601406339895; Tue, 29 Sep 2020 12:05:39 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v5 08/68] target/riscv: rvv-1.0: add vcsr register Date: Wed, 30 Sep 2020 03:03:43 +0800 Message-Id: <20200929190448.31116-9-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200929190448.31116-1-frank.chang@sifive.com> References: <20200929190448.31116-1-frank.chang@sifive.com> 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::102c; envelope-from=frank.chang@sifive.com; helo=mail-pj1-x102c.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagar Karandikar , Frank Chang , Bastian Koppelmann , Alistair Francis , Palmer Dabbelt , LIU Zhiwei Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: LIU Zhiwei Signed-off-by: LIU Zhiwei Signed-off-by: Frank Chang Reviewed-by: Richard Henderson --- target/riscv/cpu_bits.h | 7 +++++++ target/riscv/csr.c | 21 +++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index d77f790dec..0cf8a04dd8 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -60,9 +60,16 @@ #define CSR_VSTART 0x008 #define CSR_VXSAT 0x009 #define CSR_VXRM 0x00a +#define CSR_VCSR 0x00f #define CSR_VL 0xc20 #define CSR_VTYPE 0xc21 =20 +/* VCSR fields */ +#define VCSR_VXSAT_SHIFT 0 +#define VCSR_VXSAT (0x1 << VCSR_VXSAT_SHIFT) +#define VCSR_VXRM_SHIFT 1 +#define VCSR_VXRM (0x3 << VCSR_VXRM_SHIFT) + /* User Timers and Counters */ #define CSR_CYCLE 0xc00 #define CSR_TIME 0xc01 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 3117fdbe2e..aa58b0b369 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -304,6 +304,26 @@ static int write_vstart(CPURISCVState *env, int csrno,= target_ulong val) return 0; } =20 +static int read_vcsr(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D (env->vxrm << VCSR_VXRM_SHIFT) | (env->vxsat << VCSR_VXSAT_SH= IFT); + return 0; +} + +static int write_vcsr(CPURISCVState *env, int csrno, target_ulong val) +{ +#if !defined(CONFIG_USER_ONLY) + if (!env->debugger && !riscv_cpu_vector_enabled(env)) { + return -1; + } + env->mstatus |=3D MSTATUS_VS; +#endif + + env->vxrm =3D (val & VCSR_VXRM) >> VCSR_VXRM_SHIFT; + env->vxsat =3D (val & VCSR_VXSAT) >> VCSR_VXSAT_SHIFT; + return 0; +} + /* User Timers and Counters */ static int read_instret(CPURISCVState *env, int csrno, target_ulong *val) { @@ -1377,6 +1397,7 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = =3D { [CSR_VSTART] =3D { vs, read_vstart, write_vstart = }, [CSR_VXSAT] =3D { vs, read_vxsat, write_vxsat = }, [CSR_VXRM] =3D { vs, read_vxrm, write_vxrm = }, + [CSR_VCSR] =3D { vs, read_vcsr, write_vcsr = }, [CSR_VL] =3D { vs, read_vl = }, [CSR_VTYPE] =3D { vs, read_vtype = }, /* User Timers and Counters */ --=20 2.17.1