Message ID | 20200929190448.31116-10-frank.chang@sifive.com |
---|---|
State | New |
Headers | show
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[122.116.72.36]) by smtp.gmail.com with ESMTPSA id v8sm6003950pgg.58.2020.09.29.12.05.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Sep 2020 12:05:42 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v5 09/68] target/riscv: rvv-1.0: add vlenb register Date: Wed, 30 Sep 2020 03:03:44 +0800 Message-Id: <20200929190448.31116-10-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 client-ip=2607:f8b0:4864:20::429; envelope-from=frank.chang@sifive.com; helo=mail-pf1-x429.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: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>, Frank Chang <frank.chang@sifive.com>, Bastian Koppelmann <kbastian@mail.uni-paderborn.de>, Alistair Francis <Alistair.Francis@wdc.com>, Greentime Hu <greentime.hu@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com> Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> |
Series |
support vector extension v1.0
|
expand
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diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 0cf8a04dd8..1a84b7fd75 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -63,6 +63,7 @@ #define CSR_VCSR 0x00f #define CSR_VL 0xc20 #define CSR_VTYPE 0xc21 +#define CSR_VLENB 0xc22 /* VCSR fields */ #define VCSR_VXSAT_SHIFT 0 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index aa58b0b369..cf9718908e 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -241,6 +241,12 @@ static int read_vtype(CPURISCVState *env, int csrno, target_ulong *val) return 0; } +static int read_vlenb(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val = env_archcpu(env)->cfg.vlen >> 3; + return 0; +} + static int read_vl(CPURISCVState *env, int csrno, target_ulong *val) { *val = env->vl; @@ -1400,6 +1406,7 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_VCSR] = { vs, read_vcsr, write_vcsr }, [CSR_VL] = { vs, read_vl }, [CSR_VTYPE] = { vs, read_vtype }, + [CSR_VLENB] = { vs, read_vlenb }, /* User Timers and Counters */ [CSR_CYCLE] = { ctr, read_instret }, [CSR_INSTRET] = { ctr, read_instret },