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[78.62.135.63]) by smtp.gmail.com with ESMTPSA id w7-20020ac24427000000b004f3945751b2sm142632lfl.43.2023.06.08.03.42.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 03:43:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1686220980; x=1688812980; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=cIjPf2GjJew6g+tPGECmJIjJsK9iEsbIjnw3YFF23EE=; b=TSCw1NSzBvd9nZzzFTAiW9lRLDE3rEL9Ao0QINLEhq0Qx11q5ND/ZYWCR/j9OceKhC DzR2KNdMmCUi9/0krSv1CWEWqgouFBhs8vk9Zl8t57slDqdZeBsbin+mzZ6R0MXHAUkl QSN2D81/WFAiqZpsqRVAqdPYCfMF25DqXwoExQuNle7jaRrZE0XxOyL1pFWfHjpIz+i4 idPFfSjNBIpq1fDLwFOZsJAWTzdjpKgCvAhgbLAk1uwhbeRuXuaST5WaCOAYkWq26Q09 0tgPC+O1FcfkFsPt3OLXMGQ2hoer8U2+j8dXPesdLLl7c1mJr8CjkP7F1j5lBLL/LOl0 +kGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686220980; x=1688812980; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=cIjPf2GjJew6g+tPGECmJIjJsK9iEsbIjnw3YFF23EE=; b=C9FK0QS67vhb6E+/s6LqU6Oy7LQs7bkEUbhl33A1nv4EMq3cynOC0jeEgbizU0qiye f9+eqDFSfy+Ftc6BQef0IQ04+gV8enUwj+xMdIUl/ZMCcP9/hrWcQr6RDBZz1XLsHiC8 XrZwohMPO+GaYLI7oVLNe/ebdnW25qzvhmOlH7kh6JmmYkUZVWvarIgFUG/SDLqrTqtu BnMmme2Z+IQC2hJ1K2l9V5jeEivdM+JsnvCDEE9I9yT+BHZGz2mpuI+geWxYw75ELOFq fqHXluq9L2KZuaaE0Dz8GLXltYwj93f1U159c7yiK5VZejx+oeQqnVhNvvV8ingOxijV sqBA== X-Gm-Message-State: AC+VfDyafTFu5FVgrOHr0YV7zP1d/E9Z1c6E6spRIz297SZnvuuZavjW QTJc3n726qcJKcvYQ302Qlx0I/raEi0= X-Google-Smtp-Source: ACHHUZ62fgZvbJMumnggT9QCtC5C7gRO9qY3nn7ox1+g2Oakr++A8B/Py6QslwQYBQrdWhtK1J9DEQ== X-Received: by 2002:ac2:54ae:0:b0:4f2:40dd:e2cf with SMTP id w14-20020ac254ae000000b004f240dde2cfmr3112047lfk.55.1686220980517; Thu, 08 Jun 2023 03:43:00 -0700 (PDT) From: Siarhei Volkau To: qemu-devel@nongnu.org Cc: Aleksandar Rikalo , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Aurelien Jarno , Stefan Markovic , Aleksandar Markovic , Jiaxun Yang , Siarhei Volkau Subject: [PATCH 33/33] target/mips: Add emulation of MXU Q8SAD instruction Date: Thu, 8 Jun 2023 13:42:22 +0300 Message-Id: <20230608104222.1520143-34-lis8215@gmail.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230608104222.1520143-1-lis8215@gmail.com> References: <20230608104222.1520143-1-lis8215@gmail.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 client-ip=2a00:1450:4864:20::129; envelope-from=lis8215@gmail.com; helo=mail-lf1-x129.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 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, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Thu, 08 Jun 2023 09:17:53 -0400 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 @gmail.com) X-ZM-MESSAGEID: 1686230338610100002 Content-Type: text/plain; charset="utf-8" The instruction implements SAD (sum-absolute-difference) operation which is used in motion estimation algorithms. The instruction handles four 8-bit data in parallel. Signed-off-by: Siarhei Volkau --- target/mips/tcg/mxu_translate.c | 45 +++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/target/mips/tcg/mxu_translate.c b/target/mips/tcg/mxu_translat= e.c index 1e043908db..67a19c7284 100644 --- a/target/mips/tcg/mxu_translate.c +++ b/target/mips/tcg/mxu_translate.c @@ -410,6 +410,7 @@ enum { OPC_MXU_Q16SCOP =3D 0x3B, OPC_MXU_Q8MADL =3D 0x3C, OPC_MXU_S32SFL =3D 0x3D, + OPC_MXU_Q8SAD =3D 0x3E, }; =20 =20 @@ -4041,6 +4042,47 @@ static void gen_mxu_s32sfl(DisasContext *ctx) gen_store_mxu_gpr(t3, XRd); } =20 +/* + * Q8SAD XRa, XRd, XRb, XRc + * Typical SAD opration for motion estimation. + */ +static void gen_mxu_q8sad(DisasContext *ctx) +{ + uint32_t XRd, XRc, XRb, XRa; + + XRd =3D extract32(ctx->opcode, 18, 4); + XRc =3D extract32(ctx->opcode, 14, 4); + XRb =3D extract32(ctx->opcode, 10, 4); + XRa =3D extract32(ctx->opcode, 6, 4); + + TCGv t0 =3D tcg_temp_new(); + TCGv t1 =3D tcg_temp_new(); + TCGv t2 =3D tcg_temp_new(); + TCGv t3 =3D tcg_temp_new(); + TCGv t4 =3D tcg_temp_new(); + TCGv t5 =3D tcg_temp_new(); + + gen_load_mxu_gpr(t2, XRb); + gen_load_mxu_gpr(t3, XRc); + gen_load_mxu_gpr(t5, XRd); + tcg_gen_movi_tl(t4, 0); + + for (int i =3D 0; i < 4; i++) { + tcg_gen_andi_tl(t0, t2, 0xff); + tcg_gen_andi_tl(t1, t3, 0xff); + tcg_gen_sub_tl(t0, t0, t1); + tcg_gen_abs_tl(t0, t0); + tcg_gen_add_tl(t4, t4, t0); + if (i < 3) { + tcg_gen_shri_tl(t2, t2, 8); + tcg_gen_shri_tl(t3, t3, 8); + } + } + tcg_gen_add_tl(t5, t5, t4); + gen_store_mxu_gpr(t4, XRa); + gen_store_mxu_gpr(t5, XRd); +} + /* * MXU instruction category: align * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -5042,6 +5084,9 @@ bool decode_ase_mxu(DisasContext *ctx, uint32_t insn) case OPC_MXU_S32SFL: gen_mxu_s32sfl(ctx); break; + case OPC_MXU_Q8SAD: + gen_mxu_q8sad(ctx); + break; default: return false; } --=20 2.40.0