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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: 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 * Remove "vmv.s.x: dothing if rs1 =3D=3D 0" constraint. * Add vmv.x.s instruction. Signed-off-by: Frank Chang Reviewed-by: Richard Henderson --- target/riscv/insn32.decode | 3 +- target/riscv/insn_trans/trans_rvv.inc.c | 45 ++++++++++++++++++++----- 2 files changed, 39 insertions(+), 9 deletions(-) diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 67306ac7161..6b90b67c7cc 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -598,8 +598,9 @@ vmsif_m 010100 . ..... 00011 010 ..... 1010111 = @r2_vm vmsof_m 010100 . ..... 00010 010 ..... 1010111 @r2_vm viota_m 010100 . ..... 10000 010 ..... 1010111 @r2_vm vid_v 010100 . 00000 10001 010 ..... 1010111 @r1_vm +vmv_x_s 010000 1 ..... 00000 010 ..... 1010111 @r2rd +vmv_s_x 010000 1 00000 ..... 110 ..... 1010111 @r2 vext_x_v 001100 1 ..... ..... 010 ..... 1010111 @r -vmv_s_x 001101 1 00000 ..... 110 ..... 1010111 @r2 vfmv_f_s 001100 1 ..... 00000 001 ..... 1010111 @r2rd vfmv_s_f 001101 1 00000 ..... 101 ..... 1010111 @r2 vslideup_vx 001110 . ..... ..... 100 ..... 1010111 @r_vm diff --git a/target/riscv/insn_trans/trans_rvv.inc.c b/target/riscv/insn_tr= ans/trans_rvv.inc.c index 6698e1e860b..61d913fb4d9 100644 --- a/target/riscv/insn_trans/trans_rvv.inc.c +++ b/target/riscv/insn_trans/trans_rvv.inc.c @@ -3196,27 +3196,56 @@ static void vec_element_storei(DisasContext *s, int= vreg, store_element(val, cpu_env, endian_ofs(s, vreg, idx), s->sew); } =20 +/* vmv.x.s rd, vs2 # x[rd] =3D vs2[0] */ +static bool trans_vmv_x_s(DisasContext *s, arg_vmv_x_s *a) +{ + if (require_rvv(s) && + vext_check_isa_ill(s)) { + TCGv_i64 t1; + TCGv dest; + + t1 =3D tcg_temp_new_i64(); + dest =3D tcg_temp_new(); + /* + * load vreg and sign-extend to 64 bits, + * then truncate to XLEN bits before storing to gpr. + */ + vec_element_loadi(s, t1, a->rs2, 0, true); + tcg_gen_trunc_i64_tl(dest, t1); + gen_set_gpr(a->rd, dest); + tcg_temp_free_i64(t1); + tcg_temp_free(dest); + + return true; + } + return false; +} + /* vmv.s.x vd, rs1 # vd[0] =3D rs1 */ static bool trans_vmv_s_x(DisasContext *s, arg_vmv_s_x *a) { - if (vext_check_isa_ill(s)) { + if (require_rvv(s) && + vext_check_isa_ill(s)) { /* This instruction ignores LMUL and vector register groups */ - int maxsz =3D s->vlen >> 3; TCGv_i64 t1; + TCGv s1; TCGLabel *over =3D gen_new_label(); =20 tcg_gen_brcondi_tl(TCG_COND_EQ, cpu_vl, 0, over); - tcg_gen_gvec_dup_imm(SEW64, vreg_ofs(s, a->rd), maxsz, maxsz, 0); - if (a->rs1 =3D=3D 0) { - goto done; - } =20 t1 =3D tcg_temp_new_i64(); - tcg_gen_extu_tl_i64(t1, cpu_gpr[a->rs1]); + s1 =3D tcg_temp_new(); + + /* + * load gpr and sign-extend to 64 bits, + * then truncate to SEW bits when storing to vreg. + */ + gen_get_gpr(s1, a->rs1); + tcg_gen_ext_tl_i64(t1, s1); vec_element_storei(s, a->rd, 0, t1); tcg_temp_free_i64(t1); + tcg_temp_free(s1); mark_vs_dirty(s); - done: gen_set_label(over); return true; } --=20 2.17.1