From patchwork Thu Jul 30 09:52:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Chih-Min Chao X-Patchwork-Id: 11692699 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BF9D1913 for ; Thu, 30 Jul 2020 09:55:14 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 95BCC20672 for ; Thu, 30 Jul 2020 09:55:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="b3RLf+r8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 95BCC20672 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:54930 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k15HN-00039F-Tv for patchwork-qemu-devel@patchwork.kernel.org; Thu, 30 Jul 2020 05:55:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41806) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k15F5-0000Cw-0p for qemu-devel@nongnu.org; Thu, 30 Jul 2020 05:52:51 -0400 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]:43982) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k15F2-0000gO-LE for qemu-devel@nongnu.org; Thu, 30 Jul 2020 05:52:50 -0400 Received: by mail-pl1-x62e.google.com with SMTP id t10so8256276plz.10 for ; Thu, 30 Jul 2020 02:52:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Zs94FTgWvcu/MzkMP8Xd/Rn4NJyFeB+zub1Qx5JMGTU=; b=b3RLf+r8mN1LK2Gxqry2WpiOyTDWRnFdCy/J8e6kGOo1ACyFKet6bFms3OF1/gMnJ+ owaDiVq+oBIGI4YC7vJsdHOh7NT2Y+4dLnKGu/rIGOnh1qUya24td6kV+Jkr0+TLvwFC js7hwk3xIe4qFNsq74XIfq25Izczd7GZM6FxTMuDo+vvcKgQWCkAwqrdeejL85XPTjLO RqHcv04HP0vccwo8NGnpwDJgN13fQ6/8dOiLnNTw1QgLVtOSNaWdnOqTIOT/1Hupwm3J Z9ZxmY1zrEpmivETW23EAdMGoVBKpRmzIYrj5Kd+QbaRevcEzGICHD+OAn+IxMc1s1x+ c/FQ== 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=Zs94FTgWvcu/MzkMP8Xd/Rn4NJyFeB+zub1Qx5JMGTU=; b=Ztt16lyMpcm+We7gNnPdTMmfaVbMZWgTpvbBxQyVaiyOZI5ORwbVu5fOMC3DY2v78b YNf4lZWuLNXgSUf1CWWYFdmAgzyA/rWtuBjcDzY2bG4MB+gz28wa42DfwXUeXcQIdabP tFGYlLlTBzwRM9swFkkmGwJrDerW1Hj9m8zEc6udKeZh5GSsbDyBJr1fBHYcb2Ah8O7b UC8okujsRoHu+yW6FTKXCEISXC0pikWWaaM64fZxSrD1cEZpEoEw0hY583CmJUgHhqsT uhNktXQErnW+ey0/qpRAjeqaDW0/Swhdpyj2MoyTrqlqyCEO1EGAuFN2e+SWFXTriaR9 Mttw== X-Gm-Message-State: AOAM530ffIzYJrsj/tH/BBdx6hRSEfcaGbDgqwki9xYrFIn8/IsZHXde Ef09ytdDXj4gf4f1sSpfdV1wpOc5grD74A== X-Google-Smtp-Source: ABdhPJzHa4bQ/U3MhFN6ZE6I+Uu8HnhNqeJUcOu2PMP/TjkRsd1vhaJzh3t9jucd6SPOsiaEvFflyg== X-Received: by 2002:a62:e217:: with SMTP id a23mr2458418pfi.257.1596102767136; Thu, 30 Jul 2020 02:52:47 -0700 (PDT) Received: from gamma11.internal.sifive.com ([64.62.193.194]) by smtp.gmail.com with ESMTPSA id e5sm5040654pjy.26.2020.07.30.02.52.46 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 Jul 2020 02:52:46 -0700 (PDT) From: Chih-Min Chao To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH 3/3] softfloat: add fp16 and uint8/int8 interconvert functions Date: Thu, 30 Jul 2020 02:52:24 -0700 Message-Id: <1596102747-20226-4-git-send-email-chihmin.chao@sifive.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1596102747-20226-1-git-send-email-chihmin.chao@sifive.com> References: <1596102747-20226-1-git-send-email-chihmin.chao@sifive.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62e; envelope-from=chihmin.chao@sifive.com; helo=mail-pl1-x62e.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, URIBL_BLOCKED=0.001 autolearn=unavailable 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: , Cc: Frank Chang , Peter Maydell , =?utf-8?q?Alex_Benn=C3=A9e?= , Aurelien Jarno Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Frank Chang Signed-off-by: Frank Chang Reviewed-by: Alex Bennée --- fpu/softfloat.c | 34 ++++++++++++++++++++++++++++++++++ include/fpu/softfloat.h | 8 ++++++++ 2 files changed, 42 insertions(+) diff --git a/fpu/softfloat.c b/fpu/softfloat.c index 4466ece..c700a39 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -2114,6 +2114,13 @@ static int64_t round_to_int_and_pack(FloatParts in, FloatRoundMode rmode, } } +int8_t float16_to_int8_scalbn(float16 a, FloatRoundMode rmode, int scale, + float_status *s) +{ + return round_to_int_and_pack(float16_unpack_canonical(a, s), + rmode, scale, INT8_MIN, INT8_MAX, s); +} + int16_t float16_to_int16_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { @@ -2177,6 +2184,11 @@ int64_t float64_to_int64_scalbn(float64 a, FloatRoundMode rmode, int scale, rmode, scale, INT64_MIN, INT64_MAX, s); } +int8_t float16_to_int8(float16 a, float_status *s) +{ + return float16_to_int8_scalbn(a, s->float_rounding_mode, 0, s); +} + int16_t float16_to_int16(float16 a, float_status *s) { return float16_to_int16_scalbn(a, s->float_rounding_mode, 0, s); @@ -2327,6 +2339,13 @@ static uint64_t round_to_uint_and_pack(FloatParts in, FloatRoundMode rmode, } } +uint8_t float16_to_uint8_scalbn(float16 a, FloatRoundMode rmode, int scale, + float_status *s) +{ + return round_to_uint_and_pack(float16_unpack_canonical(a, s), + rmode, scale, UINT8_MAX, s); +} + uint16_t float16_to_uint16_scalbn(float16 a, FloatRoundMode rmode, int scale, float_status *s) { @@ -2390,6 +2409,11 @@ uint64_t float64_to_uint64_scalbn(float64 a, FloatRoundMode rmode, int scale, rmode, scale, UINT64_MAX, s); } +uint8_t float16_to_uint8(float16 a, float_status *s) +{ + return float16_to_uint8_scalbn(a, s->float_rounding_mode, 0, s); +} + uint16_t float16_to_uint16(float16 a, float_status *s) { return float16_to_uint16_scalbn(a, s->float_rounding_mode, 0, s); @@ -2544,6 +2568,11 @@ float16 int16_to_float16(int16_t a, float_status *status) return int64_to_float16_scalbn(a, 0, status); } +float16 int8_to_float16(int8_t a, float_status *status) +{ + return int64_to_float16_scalbn(a, 0, status); +} + float32 int64_to_float32_scalbn(int64_t a, int scale, float_status *status) { FloatParts pa = int_to_float(a, scale, status); @@ -2669,6 +2698,11 @@ float16 uint16_to_float16(uint16_t a, float_status *status) return uint64_to_float16_scalbn(a, 0, status); } +float16 uint8_to_float16(uint8_t a, float_status *status) +{ + return uint64_to_float16_scalbn(a, 0, status); +} + float32 uint64_to_float32_scalbn(uint64_t a, int scale, float_status *status) { FloatParts pa = uint_to_float(a, scale, status); diff --git a/include/fpu/softfloat.h b/include/fpu/softfloat.h index 65842b0..fec670a 100644 --- a/include/fpu/softfloat.h +++ b/include/fpu/softfloat.h @@ -136,9 +136,11 @@ float16 uint16_to_float16_scalbn(uint16_t a, int, float_status *status); float16 uint32_to_float16_scalbn(uint32_t a, int, float_status *status); float16 uint64_to_float16_scalbn(uint64_t a, int, float_status *status); +float16 int8_to_float16(int8_t a, float_status *status); float16 int16_to_float16(int16_t a, float_status *status); float16 int32_to_float16(int32_t a, float_status *status); float16 int64_to_float16(int64_t a, float_status *status); +float16 uint8_to_float16(uint8_t a, float_status *status); float16 uint16_to_float16(uint16_t a, float_status *status); float16 uint32_to_float16(uint32_t a, float_status *status); float16 uint64_to_float16(uint64_t a, float_status *status); @@ -187,10 +189,13 @@ float32 float16_to_float32(float16, bool ieee, float_status *status); float16 float64_to_float16(float64 a, bool ieee, float_status *status); float64 float16_to_float64(float16 a, bool ieee, float_status *status); +int8_t float16_to_int8_scalbn(float16, FloatRoundMode, int, + float_status *status); int16_t float16_to_int16_scalbn(float16, FloatRoundMode, int, float_status *); int32_t float16_to_int32_scalbn(float16, FloatRoundMode, int, float_status *); int64_t float16_to_int64_scalbn(float16, FloatRoundMode, int, float_status *); +int8_t float16_to_int8(float16, float_status *status); int16_t float16_to_int16(float16, float_status *status); int32_t float16_to_int32(float16, float_status *status); int64_t float16_to_int64(float16, float_status *status); @@ -199,6 +204,8 @@ int16_t float16_to_int16_round_to_zero(float16, float_status *status); int32_t float16_to_int32_round_to_zero(float16, float_status *status); int64_t float16_to_int64_round_to_zero(float16, float_status *status); +uint8_t float16_to_uint8_scalbn(float16 a, FloatRoundMode, + int, float_status *status); uint16_t float16_to_uint16_scalbn(float16 a, FloatRoundMode, int, float_status *status); uint32_t float16_to_uint32_scalbn(float16 a, FloatRoundMode, @@ -206,6 +213,7 @@ uint32_t float16_to_uint32_scalbn(float16 a, FloatRoundMode, uint64_t float16_to_uint64_scalbn(float16 a, FloatRoundMode, int, float_status *status); +uint8_t float16_to_uint8(float16 a, float_status *status); uint16_t float16_to_uint16(float16 a, float_status *status); uint32_t float16_to_uint32(float16 a, float_status *status); uint64_t float16_to_uint64(float16 a, float_status *status);