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[78.62.135.63]) by smtp.gmail.com with ESMTPSA id w7-20020ac24427000000b004f3945751b2sm142632lfl.43.2023.06.08.03.42.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 03:42:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1686220961; x=1688812961; 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=t3uE4GaEsW/x50YRMMv7uHN9X9c9wJxLCodd7Qq/a4k=; b=PPtJrrgnlDXCTgZ5p6UOS6Kl0y8XvauVx/zdf4KcUn24Nx7CyjdlVKlFGXiacyeAoR w+zD44fx1njnHVHfGRmTqkvjCZGqB8rNO+BxUhuBbWjNOIhozBteNAXmFPZIFZcMts+/ 4IHaCbzFczcQ/wmqozuRGUKTnZkGeCHzhpltyBydCW41jgXF60Cm6iRM7CeDxQH9X3On k5WUsZPOqqElPTm3mRJmPtWslb5LIF61SJy5DUa8IvE+EIt8g99CB4BRGdqyriesTCgj Y1wDuJtkhAps6e0ysdg4lwM72TTuVz4YhkjEfEtvAuOMnur+604DDJTk/Y/0oYcj2Gbr w0QQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686220961; x=1688812961; 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=t3uE4GaEsW/x50YRMMv7uHN9X9c9wJxLCodd7Qq/a4k=; b=PiCwBnSM/VCHIWWgERmF6dufOxqWokzi/PNVa9sgSmLoHKtEVkEXjOlMvHYJ+qtY+r ZmjCh3uvP9i26cZCAHwxrmEJS9oBNCOYlnfetk/eDPLNCGtNXpo+GmRGXw1Wp9lvx0S6 rxsISBtoKpTTz4Cp8E8IADR1WhpHKJaGxb8dIrV4HK/qmpxc+Vkq4wRhtdrDoCb3fVWd eE1cWvVTrFygbtcE0MCdzmR3KIi5RukF0RxRgKUZA8dmMhZYbJP9NFn9hEQ5OLtGiaso 5wIuayhJ0sYhtxd6ScWKbzmKxY6NeJF6e1lRl6+/40C0Qzss0StEkMHYvXTEdGNOxh9G 0mnA== X-Gm-Message-State: AC+VfDxHX2U7AS4fK6PUxR3vF+MDwrYd+axhMCX/3kItncOy390Puwjl Vgp/kK3uT30BlMIq7ZalhWRdg7GGmfQ= X-Google-Smtp-Source: ACHHUZ5EeqQ/qYji1q2KXxnYRHLAzOO8ZEbBash7rVT/BkR6+ZZ7uELRo/ZGeVJ3mxzhXSuiuOX/Vg== X-Received: by 2002:ac2:510b:0:b0:4dc:807a:d144 with SMTP id q11-20020ac2510b000000b004dc807ad144mr2908319lfb.39.1686220960744; Thu, 08 Jun 2023 03:42:40 -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 15/33] target/mips: Add emulation of MXU D32ADD instruction Date: Thu, 8 Jun 2023 13:42:04 +0300 Message-Id: <20230608104222.1520143-16-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::135; envelope-from=lis8215@gmail.com; helo=mail-lf1-x135.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: 1686230465445100007 Content-Type: text/plain; charset="utf-8" The instruction adds/subtracts two 32-bit values in XRb and XRc. Placing results in XRa and XRd and updates carry bits for each path in the MXU control register. Signed-off-by: Siarhei Volkau --- target/mips/tcg/mxu_translate.c | 64 +++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/target/mips/tcg/mxu_translate.c b/target/mips/tcg/mxu_translat= e.c index 5596d86234..03be624d86 100644 --- a/target/mips/tcg/mxu_translate.c +++ b/target/mips/tcg/mxu_translate.c @@ -378,6 +378,7 @@ enum { OPC_MXU__POOL09 =3D 0x15, OPC_MXU__POOL10 =3D 0x16, OPC_MXU__POOL11 =3D 0x17, + OPC_MXU_D32ADD =3D 0x18, OPC_MXU_S8LDD =3D 0x22, OPC_MXU__POOL16 =3D 0x27, OPC_MXU__POOL17 =3D 0x28, @@ -2249,6 +2250,66 @@ static void gen_mxu_q16add(DisasContext *ctx) tcg_gen_or_tl(mxu_gpr[XRd - 1], t0, t1); } =20 +/* + * D32ADD XRa, XRb, XRc, XRd, aptn2 - Double + * 32 bit pattern addition/subtraction. + */ +static void gen_mxu_d32add(DisasContext *ctx) +{ + uint32_t aptn2, pad, XRc, XRb, XRa, XRd; + + aptn2 =3D extract32(ctx->opcode, 24, 2); + pad =3D extract32(ctx->opcode, 22, 2); + 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 carry =3D tcg_temp_new(); + TCGv cr =3D tcg_temp_new(); + + if (unlikely(pad !=3D 0)) { + /* opcode padding incorrect -> do nothing */ + } else if (unlikely(XRa =3D=3D 0 && XRd =3D=3D 0)) { + /* destinations are zero register -> do nothing */ + } else { + /* common case */ + gen_load_mxu_gpr(t0, XRb); + gen_load_mxu_gpr(t1, XRc); + gen_load_mxu_cr(cr); + if (XRa !=3D 0) { + if (aptn2 & 2) { + tcg_gen_sub_i32(t2, t0, t1); + tcg_gen_setcond_tl(TCG_COND_GTU, carry, t0, t1); + } else { + tcg_gen_add_i32(t2, t0, t1); + tcg_gen_setcond_tl(TCG_COND_GTU, carry, t0, t2); + } + tcg_gen_andi_tl(cr, cr, 0x7fffffff); + tcg_gen_shli_tl(carry, carry, 31); + tcg_gen_or_tl(cr, cr, carry); + gen_store_mxu_gpr(t2, XRa); + } + if (XRd !=3D 0) { + if (aptn2 & 1) { + tcg_gen_sub_i32(t2, t0, t1); + tcg_gen_setcond_tl(TCG_COND_GTU, carry, t0, t1); + } else { + tcg_gen_add_i32(t2, t0, t1); + tcg_gen_setcond_tl(TCG_COND_GTU, carry, t0, t2); + } + tcg_gen_andi_tl(cr, cr, 0xbfffffff); + tcg_gen_shli_tl(carry, carry, 30); + tcg_gen_or_tl(cr, cr, carry); + gen_store_mxu_gpr(t2, XRd); + } + gen_store_mxu_cr(cr); + } +} + /* * MXU instruction category: Miscellaneous * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ @@ -3033,6 +3094,9 @@ bool decode_ase_mxu(DisasContext *ctx, uint32_t insn) case OPC_MXU__POOL11: decode_opc_mxu__pool11(ctx); break; + case OPC_MXU_D32ADD: + gen_mxu_d32add(ctx); + break; case OPC_MXU_S8LDD: gen_mxu_s8ldd(ctx); break; --=20 2.40.0