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Thu, 08 Jan 2026 23:32:12 -0800 (PST) From: Max Chou To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: Palmer Dabbelt , Alistair Francis , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , Max Chou Subject: [PATCH v5 4/4] disas/riscv: Support the Zvqdotq extension Date: Fri, 9 Jan 2026 15:31:54 +0800 Message-ID: <20260109073154.46251-5-max.chou@sifive.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260109073154.46251-1-max.chou@sifive.com> References: <20260109073154.46251-1-max.chou@sifive.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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 (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::434; envelope-from=max.chou@sifive.com; helo=mail-pf1-x434.google.com 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @sifive.com) X-ZM-MESSAGEID: 1767944005976158500 Content-Type: text/plain; charset="utf-8" The Zvqdotq provides following instructions: - vqdot.[vv,vx] Vector 8-bit Signed-Signed Dot Product - vqdotu.[vv,vx] Vector 8-bit Unsigned Dot Product - vqdotsu.[vv,vx] Vector 8-bit Signed-Unsigned Dot Product - vqdotus.vx Vector 8-bit Unsigned-Signed Dot Product Signed-off-by: Max Chou --- disas/riscv.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/disas/riscv.c b/disas/riscv.c index 85cd2a9c2a..b7520f2b42 100644 --- a/disas/riscv.c +++ b/disas/riscv.c @@ -984,6 +984,13 @@ typedef enum { rv_op_ssamoswap_d =3D 953, rv_op_c_sspush =3D 954, rv_op_c_sspopchk =3D 955, + rv_op_vqdot_vv =3D 956, + rv_op_vqdot_vx =3D 957, + rv_op_vqdotu_vv =3D 958, + rv_op_vqdotu_vx =3D 959, + rv_op_vqdotsu_vv =3D 960, + rv_op_vqdotsu_vx =3D 961, + rv_op_vqdotus_vx =3D 962, } rv_op; =20 /* register names */ @@ -2254,6 +2261,13 @@ const rv_opcode_data rvi_opcode_data[] =3D { rv_op_sspush, 0 }, { "c.sspopchk", rv_codec_cmop_ss, rv_fmt_rs1, NULL, rv_op_sspopchk, rv_op_sspopchk, 0 }, + { "vqdot.vv", rv_codec_v_r, rv_fmt_vd_vs1_vs2_vm, NULL, 0, 0, 0 }, + { "vqdot.vx", rv_codec_v_r, rv_fmt_vd_rs1_vs2_vm, NULL, 0, 0, 0 }, + { "vqdotu.vv", rv_codec_v_r, rv_fmt_vd_vs1_vs2_vm, NULL, 0, 0, 0 }, + { "vqdotu.vx", rv_codec_v_r, rv_fmt_vd_rs1_vs2_vm, NULL, 0, 0, 0 }, + { "vqdotsu.vv", rv_codec_v_r, rv_fmt_vd_vs1_vs2_vm, NULL, 0, 0, 0 }, + { "vqdotsu.vx", rv_codec_v_r, rv_fmt_vd_rs1_vs2_vm, NULL, 0, 0, 0 }, + { "vqdotus.vx", rv_codec_v_r, rv_fmt_vd_rs1_vs2_vm, NULL, 0, 0, 0 }, }; =20 /* CSR names */ @@ -3738,8 +3752,11 @@ static void decode_inst_opcode(rv_decode *dec, rv_is= a isa) case 37: op =3D rv_op_vmul_vv; break; case 38: op =3D rv_op_vmulhsu_vv; break; case 39: op =3D rv_op_vmulh_vv; break; + case 40: op =3D rv_op_vqdotu_vv; break; case 41: op =3D rv_op_vmadd_vv; break; + case 42: op =3D rv_op_vqdotsu_vv; break; case 43: op =3D rv_op_vnmsub_vv; break; + case 44: op =3D rv_op_vqdot_vv; break; case 45: op =3D rv_op_vmacc_vv; break; case 47: op =3D rv_op_vnmsac_vv; break; case 48: op =3D rv_op_vwaddu_vv; break; @@ -3945,9 +3962,13 @@ static void decode_inst_opcode(rv_decode *dec, rv_is= a isa) case 37: op =3D rv_op_vmul_vx; break; case 38: op =3D rv_op_vmulhsu_vx; break; case 39: op =3D rv_op_vmulh_vx; break; + case 40: op =3D rv_op_vqdotu_vx; break; case 41: op =3D rv_op_vmadd_vx; break; + case 42: op =3D rv_op_vqdotsu_vx; break; case 43: op =3D rv_op_vnmsub_vx; break; + case 44: op =3D rv_op_vqdot_vx; break; case 45: op =3D rv_op_vmacc_vx; break; + case 46: op =3D rv_op_vqdotus_vx; break; case 47: op =3D rv_op_vnmsac_vx; break; case 48: op =3D rv_op_vwaddu_vx; break; case 49: op =3D rv_op_vwadd_vx; break; --=20 2.43.7