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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id z9sm2242317wma.4.2020.09.01.08.18.39 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2020 08:18:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=ROW9Q5aXqXTZPIJJlI4YCR/TQMJwu0yJces49kV2nLI=; b=HG4M0hDe3ebCAwqyxHdCl858ln4o4vvx0GanPnHGGi38kSAUKyinG5ONFcrqhewyvJ 5R97mBCHt7YAbBgiBk8xZUGldMelzwmRaVf9uiRo+ljrluoVxoQS3KbETljZFQpa4fy5 YaWPIT3AgFHqjRthJCcL+Jms/t+YNFtFQ5rHMjaJDzy6HkJNZduwWWJTCB0bcOLQodOC BCBtUXZW4ijttcUknnM+hWOSHdam6tBD8hxH8RMhoTbEdnaOgennjyBaWLz1radyAzfl WY2I+E3VCFxscChnCMTWl5VPh8gg9KAj1A89vT1S/hRKpclSiiJslXw3Avot2I0DcPpf PPIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ROW9Q5aXqXTZPIJJlI4YCR/TQMJwu0yJces49kV2nLI=; b=TrO7I+asj99IXSAStb6qUT1JEFCGqEdnpVC2MbuyLLZEhpdG2KmuZdVPMaP9/xiR/K AEwtudG2vpULKFAAlyUNp82juVkAweFds40t5DaCAw03S80ibQRmfZAeIhSQpttHrTId 7i3X867sZOpXlGp5OO2MHyzc4bFC4Z9gTZwINaqjmQRwdMG4pCQUr67EmXuIZfH1ncZl SkAA98zaERL7imE7ekZ2RMabtSLiX7q+EtyM3LgMg1ylEsWvDTYYT0jr5IG1gsKf6QbT 5mYgoLeUN5ujRZHsh3FJqcYlg4MqvImYGRY82L6e8DN5+ktnWBGx9C4JwudXXVHjY2Z+ 6i1A== X-Gm-Message-State: AOAM532W/fdBrIIhpYOX6neR6BGguOs7b1pyuLlVE3Itk+hLD31DCxE0 xeLwrttgImDKpysM+/iBB+a7LR8zv6K0a4qo X-Google-Smtp-Source: ABdhPJzdqUzFDcILAipAfdEN27bOCFQ4uLJSsSpGjR4uXOuCNXQVCuVQtW2KPfVN4IzBM1cPC4lW+A== X-Received: by 2002:a7b:c084:: with SMTP id r4mr2290619wmh.20.1598973521352; Tue, 01 Sep 2020 08:18:41 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 11/47] target/arm: Implement VFP fp16 VLDR and VSTR Date: Tue, 1 Sep 2020 16:17:47 +0100 Message-Id: <20200901151823.29785-12-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200901151823.29785-1-peter.maydell@linaro.org> References: <20200901151823.29785-1-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::342; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x342.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 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) Content-Type: text/plain; charset="utf-8" Implement the fp16 versions of the VFP VLDR/VSTR (immediate). Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson Message-id: 20200828183354.27913-12-peter.maydell@linaro.org --- target/arm/vfp.decode | 3 +-- target/arm/translate-vfp.c.inc | 35 ++++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+), 2 deletions(-) diff --git a/target/arm/vfp.decode b/target/arm/vfp.decode index b213da4b55d..37f96e2d261 100644 --- a/target/arm/vfp.decode +++ b/target/arm/vfp.decode @@ -79,8 +79,7 @@ VMOV_single ---- 1110 000 l:1 .... rt:4 1010 . 001 0000 = vn=3D%vn_sp VMOV_64_sp ---- 1100 010 op:1 rt2:4 rt:4 1010 00.1 .... vm=3D%vm_sp VMOV_64_dp ---- 1100 010 op:1 rt2:4 rt:4 1011 00.1 .... vm=3D%vm_dp =20 -# Note that the half-precision variants of VLDR and VSTR are -# not part of this decodetree at all because they have bits [9:8] =3D=3D 0= b01 +VLDR_VSTR_hp ---- 1101 u:1 .0 l:1 rn:4 .... 1001 imm:8 vd=3D%vd_sp VLDR_VSTR_sp ---- 1101 u:1 .0 l:1 rn:4 .... 1010 imm:8 vd=3D%vd_sp VLDR_VSTR_dp ---- 1101 u:1 .0 l:1 rn:4 .... 1011 imm:8 vd=3D%vd_dp =20 diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index 00a6363e1e1..59ef4d4fbc3 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -886,6 +886,41 @@ static bool trans_VMOV_64_dp(DisasContext *s, arg_VMOV= _64_dp *a) return true; } =20 +static bool trans_VLDR_VSTR_hp(DisasContext *s, arg_VLDR_VSTR_sp *a) +{ + uint32_t offset; + TCGv_i32 addr, tmp; + + if (!dc_isar_feature(aa32_fp16_arith, s)) { + return false; + } + + if (!vfp_access_check(s)) { + return true; + } + + /* imm8 field is offset/2 for fp16, unlike fp32 and fp64 */ + offset =3D a->imm << 1; + if (!a->u) { + offset =3D -offset; + } + + /* For thumb, use of PC is UNPREDICTABLE. */ + addr =3D add_reg_for_lit(s, a->rn, offset); + tmp =3D tcg_temp_new_i32(); + if (a->l) { + gen_aa32_ld16u(s, tmp, addr, get_mem_index(s)); + neon_store_reg32(tmp, a->vd); + } else { + neon_load_reg32(tmp, a->vd); + gen_aa32_st16(s, tmp, addr, get_mem_index(s)); + } + tcg_temp_free_i32(tmp); + tcg_temp_free_i32(addr); + + return true; +} + static bool trans_VLDR_VSTR_sp(DisasContext *s, arg_VLDR_VSTR_sp *a) { uint32_t offset; --=20 2.20.1