From nobody Mon Feb 9 23:40:12 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1519744100973705.6477654375595; Tue, 27 Feb 2018 07:08:20 -0800 (PST) Received: from localhost ([::1]:37873 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eqgrZ-0003U9-RG for importer@patchew.org; Tue, 27 Feb 2018 10:08:17 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58380) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eqgY7-0003ZH-Gx for qemu-devel@nongnu.org; Tue, 27 Feb 2018 09:48:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eqgY4-0001SU-HE for qemu-devel@nongnu.org; Tue, 27 Feb 2018 09:48:11 -0500 Received: from mail-wm0-x243.google.com ([2a00:1450:400c:c09::243]:51333) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eqgY4-0001OA-4f for qemu-devel@nongnu.org; Tue, 27 Feb 2018 09:48:08 -0500 Received: by mail-wm0-x243.google.com with SMTP id h21so24575179wmd.1 for ; Tue, 27 Feb 2018 06:48:07 -0800 (PST) Received: from zen.linaro.local ([81.128.185.34]) by smtp.gmail.com with ESMTPSA id 69sm12715775wmw.32.2018.02.27.06.48.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 27 Feb 2018 06:48:05 -0800 (PST) Received: from zen.linaroharston (localhost [127.0.0.1]) by zen.linaro.local (Postfix) with ESMTP id B60A23E021C; Tue, 27 Feb 2018 14:38:54 +0000 (GMT) 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=/VOmrW+DMNJTkgKs8tQhoqEyE0ii2loGX7asVSBBLbg=; b=auzLsPgvLnOl5VIlA4/irO0dM/S8jTEDRZ2cojrNOX1Kx6VHympHCeR7Wa/5GvTt2X 9J7XrZBEIihRs6nWdEk6+oCdGoJs2Afl7O8vM6u8hzM/dNB8JfqfSsqmeNiKNep3og+E gXh0BQixqivGVi4zWAS295I5cM04xKX4Fndzw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/VOmrW+DMNJTkgKs8tQhoqEyE0ii2loGX7asVSBBLbg=; b=LAPXRA9ZN52jQSaxKF4BNRGXT+HVM7yFp6mg11JDnrCm1NPMDP/vvp482zX+0eTckZ vsP7l9w0AzM6kw02aGb/hHh/FxqWa82SM37q9dGMz9s9l/gCoVbZ+x3jEDS8/AxlZaTA wJTkVL6FF66aHMXSLZnZG+xk/63IPWQ3h18qMaL0OA9EVfEHWSZpnvTZYJ6cUWtRjU0F VJudRf33tQBiWChAGsXUBngJC1Fn9PQIRBh99caLGb05LbG5QsSNcP7AmWoR1Pdg78Po rGkE93jRoYf+34Hw+Cp/0TUg9JEnR4NBK86iU0LSahfoxQnz4Rh2LsLUKH7590OG1oQ7 P8mQ== X-Gm-Message-State: APf1xPAlHp+7H/fgiemS7dXdDe1Gmh2Oo11smArZi8vUBTcygZvi48FQ YBgbKHrAVW3Ts3nly+BoWv/3Zw== X-Google-Smtp-Source: AG47ELuLM3I1hVF9LYdwKyKt8M2+Xyljrr9SKnx1qVwpt8UMeGPXCkH7YLdD5apTrY7hSPlgzETZrg== X-Received: by 10.28.239.8 with SMTP id n8mr9078040wmh.120.1519742886918; Tue, 27 Feb 2018 06:48:06 -0800 (PST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-arm@nongnu.org Date: Tue, 27 Feb 2018 14:38:45 +0000 Message-Id: <20180227143852.11175-25-alex.bennee@linaro.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180227143852.11175-1-alex.bennee@linaro.org> References: <20180227143852.11175-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:400c:c09::243 Subject: [Qemu-devel] [PATCH v4 24/31] arm/translate-a64: add FP16 FRCPX to simd_two_reg_misc_fp16 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , richard.henderson@linaro.org, qemu-devel@nongnu.org, Peter Maydell Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 We go with the localised helper. Signed-off-by: Alex Benn=C3=A9e Reviewed-by: Richard Henderson --- target/arm/helper-a64.c | 29 +++++++++++++++++++++++++++++ target/arm/helper-a64.h | 1 + target/arm/translate-a64.c | 4 ++++ 3 files changed, 34 insertions(+) diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c index 722fff2349..92a0d55a9c 100644 --- a/target/arm/helper-a64.c +++ b/target/arm/helper-a64.c @@ -356,6 +356,35 @@ uint64_t HELPER(neon_addlp_u16)(uint64_t a) } =20 /* Floating-point reciprocal exponent - see FPRecpX in ARM ARM */ +float16 HELPER(frecpx_f16)(float16 a, void *fpstp) +{ + float_status *fpst =3D fpstp; + uint16_t val16, sbit; + int16_t exp; + + if (float16_is_any_nan(a)) { + float16 nan =3D a; + if (float16_is_signaling_nan(a, fpst)) { + float_raise(float_flag_invalid, fpst); + nan =3D float16_maybe_silence_nan(a, fpst); + } + if (fpst->default_nan_mode) { + nan =3D float16_default_nan(fpst); + } + return nan; + } + + val16 =3D float16_val(a); + sbit =3D 0x8000 & val16; + exp =3D extract32(val16, 10, 5); + + if (exp =3D=3D 0) { + return make_float16(deposit32(sbit, 10, 5, 0x1e)); + } else { + return make_float16(deposit32(sbit, 10, 5, ~exp)); + } +} + float32 HELPER(frecpx_f32)(float32 a, void *fpstp) { float_status *fpst =3D fpstp; diff --git a/target/arm/helper-a64.h b/target/arm/helper-a64.h index 32931b17c6..339323fc3d 100644 --- a/target/arm/helper-a64.h +++ b/target/arm/helper-a64.h @@ -41,6 +41,7 @@ DEF_HELPER_FLAGS_1(neon_addlp_s16, TCG_CALL_NO_RWG_SE, i6= 4, i64) DEF_HELPER_FLAGS_1(neon_addlp_u16, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_FLAGS_2(frecpx_f64, TCG_CALL_NO_RWG, f64, f64, ptr) DEF_HELPER_FLAGS_2(frecpx_f32, TCG_CALL_NO_RWG, f32, f32, ptr) +DEF_HELPER_FLAGS_2(frecpx_f16, TCG_CALL_NO_RWG, f16, f16, ptr) DEF_HELPER_FLAGS_2(fcvtx_f64_to_f32, TCG_CALL_NO_RWG, f32, f64, env) DEF_HELPER_FLAGS_3(crc32_64, TCG_CALL_NO_RWG_SE, i64, i64, i64, i32) DEF_HELPER_FLAGS_3(crc32c_64, TCG_CALL_NO_RWG_SE, i64, i64, i64, i32) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 50b4fa4ce4..715dc4333d 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -11312,6 +11312,7 @@ static void disas_simd_two_reg_misc_fp16(DisasConte= xt *s, uint32_t insn) handle_2misc_fcmp_zero(s, fpop, is_scalar, 0, is_q, MO_16, rn, rd); return; case 0x3d: /* FRECPE */ + case 0x3f: /* FRECPX */ break; case 0x18: /* FRINTN */ need_rmode =3D true; @@ -11436,6 +11437,9 @@ static void disas_simd_two_reg_misc_fp16(DisasConte= xt *s, uint32_t insn) case 0x3d: /* FRECPE */ gen_helper_recpe_f16(tcg_res, tcg_op, tcg_fpstatus); break; + case 0x3f: /* FRECPX */ + gen_helper_frecpx_f16(tcg_res, tcg_op, tcg_fpstatus); + break; case 0x5a: /* FCVTNU */ case 0x5b: /* FCVTMU */ case 0x5c: /* FCVTAU */ --=20 2.15.1