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([122.255.60.245]) by smtp.gmail.com with ESMTPSA id t17-20020a170902e85100b00162529828aesm25199256plg.109.2022.07.06.01.25.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Jul 2022 01:25:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=z4hqPmoRZ7cVUM8Y9hb593g0CFOYpdMYGSA5G3fCVmQ=; b=kQN9xa31mCVICHCMs4C9zeRWKoZnCF6Qa9PzjDwOpbVKVF7DMJXj52SW2FptVbxN0N FX0T+P89lqZOlVeilXYAypkbplkd266ZlBMkWAeUdJiEs/xZnBgGZ7MAqByT12JcWhiW X7Ko14qIFewZj2uf+l5tMOP5TYd+LmmhRhr69xka6fO7dFdKgWsQPhYTPUYLqjG+ME5D F7MVkto75X2m9A4w1I8HMIxyc+h6nVh2f6Pisfw+pJXyRVl07wHl9AJpEo8WbMRfTZ7O ndrHam+JVHVhG7KVbBfAhcINysSkG/o7GcJUPOV4JZmP8Lhb0FZQ9rC3erI7ptESEZ8w m46w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=z4hqPmoRZ7cVUM8Y9hb593g0CFOYpdMYGSA5G3fCVmQ=; b=xxqgfYe1XLZPpKbmvdCOtoZXiKMxs5pA4J+iEwd6R4S+2+H5TGPGGxYWnV6YBXCGtp 7Z68G16Moyfl5/LuvtKCNRd6z8AsDycU28B0A3ohS1KAPNprv6qTIPuOl4iRD72KWefa DoEO1L1b6E4Se5Dki05mS2PPKfCWZUVAlhcPbrw1LRigUr+OR3e3oTuhOX6eFIiLjI24 8CThtrc0EGsvMz7U12OMWE5I3r5gQ9BAGWwAH/PObfalv0aY/mOfw/A1MhxspFXZDKY8 ILoQiotKVMDMzv5soB7uFng0s1zHdYZLpIJeUNl9DOiOp9Bj5wX96DpaXEugL9RzrBhL mylg== X-Gm-Message-State: AJIora8kJlG6+uXomYW5c7o6A7AE04/trKSw+Z69qk5VCpuwBecQSufH o0zcJVfuh4zLM3j4GErYCj3nsx75MBQzl994 X-Google-Smtp-Source: AGRyM1upu3esBcjMM1GIgKeEdcR2BDxPodSrIy7OL/+uzyHhgx/jDaGSlDJpfMv73ztMtGU7i5RzBQ== X-Received: by 2002:a63:5366:0:b0:411:415a:5888 with SMTP id t38-20020a635366000000b00411415a5888mr33140204pgl.286.1657095934817; Wed, 06 Jul 2022 01:25:34 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell Subject: [PATCH v5 28/45] target/arm: Implement PSEL Date: Wed, 6 Jul 2022 13:53:54 +0530 Message-Id: <20220706082411.1664825-29-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220706082411.1664825-1-richard.henderson@linaro.org> References: <20220706082411.1664825-1-richard.henderson@linaro.org> 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=2607:f8b0:4864:20::433; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x433.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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1657099527735100001 Content-Type: text/plain; charset="utf-8" This is an SVE instruction that operates using the SVE vector length but that it is present only if SME is implemented. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/sve.decode | 20 +++++++++++++ target/arm/translate-sve.c | 57 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 77 insertions(+) diff --git a/target/arm/sve.decode b/target/arm/sve.decode index 95af08c139..966803cbb7 100644 --- a/target/arm/sve.decode +++ b/target/arm/sve.decode @@ -1674,3 +1674,23 @@ BFMLALT_zzxw 01100100 11 1 ..... 0100.1 ..... ...= .. @rrxr_3a esz=3D2 =20 ### SVE2 floating-point bfloat16 dot-product (indexed) BFDOT_zzxz 01100100 01 1 ..... 010000 ..... ..... @rrxr_2 esz=3D2 + +### SVE broadcast predicate element + +&psel esz pd pn pm rv imm +%psel_rv 16:2 !function=3Dplus_12 +%psel_imm_b 22:2 19:2 +%psel_imm_h 22:2 20:1 +%psel_imm_s 22:2 +%psel_imm_d 23:1 +@psel ........ .. . ... .. .. pn:4 . pm:4 . pd:4 \ + &psel rv=3D%psel_rv + +PSEL 00100101 .. 1 ..1 .. 01 .... 0 .... 0 .... \ + @psel esz=3D0 imm=3D%psel_imm_b +PSEL 00100101 .. 1 .10 .. 01 .... 0 .... 0 .... \ + @psel esz=3D1 imm=3D%psel_imm_h +PSEL 00100101 .. 1 100 .. 01 .... 0 .... 0 .... \ + @psel esz=3D2 imm=3D%psel_imm_s +PSEL 00100101 .1 1 000 .. 01 .... 0 .... 0 .... \ + @psel esz=3D3 imm=3D%psel_imm_d diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c index fd1a173637..24ffb69a2a 100644 --- a/target/arm/translate-sve.c +++ b/target/arm/translate-sve.c @@ -7419,3 +7419,60 @@ static bool do_BFMLAL_zzxw(DisasContext *s, arg_rrxr= _esz *a, bool sel) =20 TRANS_FEAT(BFMLALB_zzxw, aa64_sve_bf16, do_BFMLAL_zzxw, a, false) TRANS_FEAT(BFMLALT_zzxw, aa64_sve_bf16, do_BFMLAL_zzxw, a, true) + +static bool trans_PSEL(DisasContext *s, arg_psel *a) +{ + int vl =3D vec_full_reg_size(s); + int pl =3D pred_gvec_reg_size(s); + int elements =3D vl >> a->esz; + TCGv_i64 tmp, didx, dbit; + TCGv_ptr ptr; + + if (!dc_isar_feature(aa64_sme, s)) { + return false; + } + if (!sve_access_check(s)) { + return true; + } + + tmp =3D tcg_temp_new_i64(); + dbit =3D tcg_temp_new_i64(); + didx =3D tcg_temp_new_i64(); + ptr =3D tcg_temp_new_ptr(); + + /* Compute the predicate element. */ + tcg_gen_addi_i64(tmp, cpu_reg(s, a->rv), a->imm); + if (is_power_of_2(elements)) { + tcg_gen_andi_i64(tmp, tmp, elements - 1); + } else { + tcg_gen_remu_i64(tmp, tmp, tcg_constant_i64(elements)); + } + + /* Extract the predicate byte and bit indices. */ + tcg_gen_shli_i64(tmp, tmp, a->esz); + tcg_gen_andi_i64(dbit, tmp, 7); + tcg_gen_shri_i64(didx, tmp, 3); + if (HOST_BIG_ENDIAN) { + tcg_gen_xori_i64(didx, didx, 7); + } + + /* Load the predicate word. */ + tcg_gen_trunc_i64_ptr(ptr, didx); + tcg_gen_add_ptr(ptr, ptr, cpu_env); + tcg_gen_ld8u_i64(tmp, ptr, pred_full_reg_offset(s, a->pm)); + + /* Extract the predicate bit and replicate to MO_64. */ + tcg_gen_shr_i64(tmp, tmp, dbit); + tcg_gen_andi_i64(tmp, tmp, 1); + tcg_gen_neg_i64(tmp, tmp); + + /* Apply to either copy the source, or write zeros. */ + tcg_gen_gvec_ands(MO_64, pred_full_reg_offset(s, a->pd), + pred_full_reg_offset(s, a->pn), tmp, pl, pl); + + tcg_temp_free_i64(tmp); + tcg_temp_free_i64(dbit); + tcg_temp_free_i64(didx); + tcg_temp_free_ptr(ptr); + return true; +} --=20 2.34.1