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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3564afc3577sm11361473f8f.102.2024.05.28.07.08.01 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 May 2024 07:08:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716905282; x=1717510082; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=dZiOjDpaTDBfQcZ9XO1B8DxujP/epjSMsXMLUfhPG4s=; b=EGqjzigM3hczXyA1ep8QwUHRljJ94Ftf7Sn1vjI/A7ts5km95xdXUFiNdpaBb2+ETn xa8qqjUbr6EqJR54dMaKRU7SXRFH0FVU9FGhPpjfgFB34/XJjxHpPHFfG4k5P8jIVGea kH/qZaEuHAaLKLV6auKbMlqTyES6ML+rIhP82r4V7lWnZrWvD/zpPQZrJZElBQblCpDH 2IFmYno36/rohVyG5JlZE/X0qrj4Io7gLumkeY+IpRYvBj9c320+5UZFNJ4jx7/Ykg2K otr4QFQ2ir/FRvzok7gPUxmlnSQISXGQxAsX+ZaIF+6QhESKZnxUdRaLbXAdBzExIgFD 3P3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716905282; x=1717510082; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=dZiOjDpaTDBfQcZ9XO1B8DxujP/epjSMsXMLUfhPG4s=; b=r7YQSdZrDPUrnpr5a2ChlYFnPumcTLQqjxvS0mLukM3fgb+UIsarsYG3J5hiDWvp3X HX9AMJHFyWqFYH2YTgISMuNqvoUtH/dtvkrFdiH9l1hFA2f+iCsKKoK71WEhIuBIKEx5 0rPVM0/DsifOIjUK+IJ6xnmLCL86EAIiBQjVu+PYt25lWGh+fmYZtuv0ppkgji5fg+rf Daqvw8nbJsZ64kpcRQWr3OqSzXCUDTNJZNIhjmPSmuF5gEa7rEDQyrIY2ABT/oTcZPno P0gNSdn7vwwTIl7eTAcTLFAcUQRdh+GqWtst6T7jI7tzVfdmLKpSOa7COjzbxmy3wHfg PNMQ== X-Gm-Message-State: AOJu0Yy/oEH3QvvW3t0AlpCLDK5G9uEGUMwElfqzwOuiaC29pIBiEbeO BBw1+rxSEo2480fldVzSpoDD8d/FnEleJBrQ+FKSzUqvKD3NfbeUQFTksKedO7hi/lYHzxhJ4q3 i X-Google-Smtp-Source: AGHT+IEs9vA8Zghze8cuzKzJQ2/KDtNXjSSIUM/+8kAqhZEzUZQSbf+0J62m4HazcytImSBLwpEptw== X-Received: by 2002:a05:6000:1001:b0:354:f52b:db65 with SMTP id ffacd0b85a97d-355245e3d1dmr9303927f8f.3.1716905282324; Tue, 28 May 2024 07:08:02 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 11/42] target/arm: Fix decode of FMOV (hp) vs MOVI Date: Tue, 28 May 2024 15:07:22 +0100 Message-Id: <20240528140753.3620597-12-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240528140753.3620597-1-peter.maydell@linaro.org> References: <20240528140753.3620597-1-peter.maydell@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=2a00:1450:4864:20::432; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x432.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716905555212100023 Content-Type: text/plain; charset="utf-8" From: Richard Henderson The decode of FMOV (vector, immediate, half-precision) vs invalid cases of MOVI are incorrect. Fixes RISU mismatch for invalid insn 0x2f01fd31. Fixes: 70b4e6a4457 ("arm/translate-a64: add FP16 FMOV to simd_mod_imm") Signed-off-by: Richard Henderson Reviewed-by: Peter Maydell Message-id: 20240524232121.284515-6-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/tcg/translate-a64.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index d97acdbaf9a..5455ae36850 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -7904,27 +7904,31 @@ static void disas_simd_mod_imm(DisasContext *s, uin= t32_t insn) bool is_q =3D extract32(insn, 30, 1); uint64_t imm =3D 0; =20 - if (o2 !=3D 0 || ((cmode =3D=3D 0xf) && is_neg && !is_q)) { - /* Check for FMOV (vector, immediate) - half-precision */ - if (!(dc_isar_feature(aa64_fp16, s) && o2 && cmode =3D=3D 0xf)) { + if (o2) { + if (cmode !=3D 0xf || is_neg) { unallocated_encoding(s); return; } - } - - if (!fp_access_check(s)) { - return; - } - - if (cmode =3D=3D 15 && o2 && !is_neg) { /* FMOV (vector, immediate) - half-precision */ + if (!dc_isar_feature(aa64_fp16, s)) { + unallocated_encoding(s); + return; + } imm =3D vfp_expand_imm(MO_16, abcdefgh); /* now duplicate across the lanes */ imm =3D dup_const(MO_16, imm); } else { + if (cmode =3D=3D 0xf && is_neg && !is_q) { + unallocated_encoding(s); + return; + } imm =3D asimd_imm_const(abcdefgh, cmode, is_neg); } =20 + if (!fp_access_check(s)) { + return; + } + if (!((cmode & 0x9) =3D=3D 0x1 || (cmode & 0xd) =3D=3D 0x9)) { /* MOVI or MVNI, with MVNI negation handled above. */ tcg_gen_gvec_dup_imm(MO_64, vec_full_reg_offset(s, rd), is_q ? 16 = : 8, --=20 2.34.1