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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, URIBL_BLOCKED=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 , Greentime Hu , Palmer Dabbelt 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: Greentime Hu Signed-off-by: Greentime Hu Signed-off-by: Frank Chang Reviewed-by: Richard Henderson --- target/riscv/cpu_bits.h | 1 + target/riscv/csr.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 7afdd4814b..fe055b67a6 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 =20 /* VCSR fields */ #define VCSR_VXSAT_SHIFT 0 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index e05acb5a24..cdf6198d8c 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -189,6 +189,12 @@ static int read_vtype(CPURISCVState *env, int csrno, t= arget_ulong *val) return 0; } =20 +static int read_vlenb(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val =3D env_archcpu(env)->cfg.vlen >> 3; + return 0; +} + static int read_vl(CPURISCVState *env, int csrno, target_ulong *val) { *val =3D env->vl; @@ -1293,6 +1299,7 @@ static riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = =3D { [CSR_VCSR] =3D { vs, read_vcsr, write_vcsr = }, [CSR_VL] =3D { vs, read_vl = }, [CSR_VTYPE] =3D { vs, read_vtype = }, + [CSR_VLENB] =3D { vs, read_vlenb = }, /* User Timers and Counters */ [CSR_CYCLE] =3D { ctr, read_instret = }, [CSR_INSTRET] =3D { ctr, read_instret = }, --=20 2.17.1