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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=ham 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: Frank Chang , Alistair Francis , Palmer Dabbelt , Sagar Karandikar , Bastian Koppelmann 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: Frank Chang Signed-off-by: Frank Chang Reviewed-by: Richard Henderson --- target/riscv/insn_trans/trans_rvv.inc.c | 12 ++++++++---- target/riscv/vector_helper.c | 14 +++++++++++++- 2 files changed, 21 insertions(+), 5 deletions(-) diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_tr= ans/trans_rvv.inc.c index 8a6050f6b32..2f87f2482c3 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -98,8 +98,10 @@ static bool trans_vsetvl(DisasContext *ctx, arg_vsetvl *= a) s2 =3D tcg_temp_new(); dst =3D tcg_temp_new(); =20 - /* Using x0 as the rs1 register specifier, encodes an infinite AVL */ - if (a->rs1 =3D=3D 0) { + if (a->rd =3D=3D 0 && a->rs1 =3D=3D 0) { + s1 =3D tcg_temp_new(); + tcg_gen_mov_tl(s1, cpu_vl); + } else if (a->rs1 =3D=3D 0) { /* As the mask is at least one bit, RV_VLEN_MAX is >=3D VLMAX */ s1 =3D tcg_const_tl(RV_VLEN_MAX); } else { @@ -131,8 +133,10 @@ static bool trans_vsetvli(DisasContext *ctx, arg_vsetv= li *a) s2 =3D tcg_const_tl(a->zimm); dst =3D tcg_temp_new(); =20 - /* Using x0 as the rs1 register specifier, encodes an infinite AVL */ - if (a->rs1 =3D=3D 0) { + if (a->rd =3D=3D 0 && a->rs1 =3D=3D 0) { + s1 =3D tcg_temp_new(); + tcg_gen_mov_tl(s1, cpu_vl); + } else if (a->rs1 =3D=3D 0) { /* As the mask is at least one bit, RV_VLEN_MAX is >=3D VLMAX */ s1 =3D tcg_const_tl(RV_VLEN_MAX); } else { diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index 5653d6dad56..6df282cbca7 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -31,12 +31,24 @@ target_ulong HELPER(vsetvl)(CPURISCVState *env, target_= ulong s1, { int vlmax, vl; RISCVCPU *cpu =3D env_archcpu(env); + uint64_t lmul =3D FIELD_EX64(s2, VTYPE, VLMUL); uint16_t sew =3D 8 << FIELD_EX64(s2, VTYPE, VSEW); uint8_t ediv =3D FIELD_EX64(s2, VTYPE, VEDIV); bool vill =3D FIELD_EX64(s2, VTYPE, VILL); target_ulong reserved =3D FIELD_EX64(s2, VTYPE, RESERVED); =20 - if ((sew > cpu->cfg.elen) || vill || (ediv !=3D 0) || (reserved !=3D 0= )) { + if (lmul & 4) { + /* Fractional LMUL. */ + if (lmul =3D=3D 4 || + cpu->cfg.elen >> (8 - lmul) < sew) { + vill =3D true; + } + } + + if ((sew > cpu->cfg.elen) + || vill + || (ediv !=3D 0) + || (reserved !=3D 0)) { /* only set vill bit. */ env->vtype =3D FIELD_DP64(0, VTYPE, VILL, 1); env->vl =3D 0; --=20 2.17.1