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[189.204.200.163]) by smtp.gmail.com with ESMTPSA id s5sm8500553qkg.88.2021.05.16.05.35.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 16 May 2021 05:35:03 -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=RndXytbTpyoZf87SoTBz0zxUXITxwgpEDPn6NB45UNI=; b=Iyvgq1tZ+Wc/X3y9EH47MrrlnfZrHPU64rQ7pY94+3Nc0wQo2ccTHg6hSLcLSs3/zL 4Z7fIhuZwZN5oa/PB0ttML1tVdBF125qddRGssIEXS4IIJAguAQyvbl4cPRopt5ZWuQQ ucQAvz5a9tYRdYK8x36Xq+aV993J/ZAgpaBqTHtL3mPSKHdwHacTRUXdlPiDsm9PSHvE Evw45OlpJWPPgG6Fv8KZt2CIwCKwKjDGQXwORWNan7juohfmR280uImstyDjdoBl8rY0 Jb9iA7ZPmvhl5uGKAToKVLi/jQIxKmiIpvTO1dLPZG90DALoyLIYqRmypSBFDC0YpQEb jODQ== 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=RndXytbTpyoZf87SoTBz0zxUXITxwgpEDPn6NB45UNI=; b=sgcBEC8lpy47CHSL6k4YjFq7+lpni6/g5QBO3w5lC6rZyQciMa/O1HpNMTTewjewkT WnNAfQ6kZVtwEzc3XYB35Oj9fCbkXplZ/LvYvjaBIOPDsl5wSyNBam85BWIsonGPwtvT F0RtTNWYwmNYuIqKTcfGrgSO72htytvMkB3Gr43LlOx3hzNL22QuX1QOv2wxtRiS1lio L+ieUz1uviYs9fmxdPwaPc36wXq0YVQc8BsMGW8eGYHy1Dakn6njGE0JeOR0PgYwiRKM DdMn/hiq2n7CECInVjoZ8MFsBmnJYqTFU6cRmFx7MW3Ecj1F6DDK6Q4xmakPy0zL99QX x9TA== X-Gm-Message-State: AOAM530a4ybcaXbmDcNyU1uDwU1/hxUKkuMg9DqVRJ0M7R8Nxxg17u9z Q/8431mNDK4KXU+UTgc0I9DH2dUzak3uNZuQvkQ= X-Google-Smtp-Source: ABdhPJwEUjEr1XBxA3GZoz7BvcbcP+aDRF2Ohj8eR8BqPJKnmErvKrZqBokuOJyEl27X+9pLfL9LTA== X-Received: by 2002:a37:a3d7:: with SMTP id m206mr51287967qke.343.1621168504040; Sun, 16 May 2021 05:35:04 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 38/46] softfloat: Use mulu64 for mul64To128 Date: Sun, 16 May 2021 07:34:23 -0500 Message-Id: <20210516123431.718318-39-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210516123431.718318-1-richard.henderson@linaro.org> References: <20210516123431.718318-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::729; envelope-from=richard.henderson@linaro.org; helo=mail-qk1-x729.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 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: , Cc: peter.maydell@linaro.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= , David Hildenbrand Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Via host-utils.h, we use a host widening multiply for 64-bit hosts, and a common subroutine for 32-bit hosts. Reviewed-by: Alex Benn=C3=A9e Reviewed-by: David Hildenbrand Signed-off-by: Richard Henderson --- include/fpu/softfloat-macros.h | 23 +++-------------------- 1 file changed, 3 insertions(+), 20 deletions(-) diff --git a/include/fpu/softfloat-macros.h b/include/fpu/softfloat-macros.h index 2e3760a9c1..f6dfbe108d 100644 --- a/include/fpu/softfloat-macros.h +++ b/include/fpu/softfloat-macros.h @@ -470,27 +470,10 @@ static inline void sub192(uint64_t a0, uint64_t a1, u= int64_t a2, | `z0Ptr' and `z1Ptr'. *-------------------------------------------------------------------------= ---*/ =20 -static inline void mul64To128( uint64_t a, uint64_t b, uint64_t *z0Ptr, ui= nt64_t *z1Ptr ) +static inline void +mul64To128(uint64_t a, uint64_t b, uint64_t *z0Ptr, uint64_t *z1Ptr) { - uint32_t aHigh, aLow, bHigh, bLow; - uint64_t z0, zMiddleA, zMiddleB, z1; - - aLow =3D a; - aHigh =3D a>>32; - bLow =3D b; - bHigh =3D b>>32; - z1 =3D ( (uint64_t) aLow ) * bLow; - zMiddleA =3D ( (uint64_t) aLow ) * bHigh; - zMiddleB =3D ( (uint64_t) aHigh ) * bLow; - z0 =3D ( (uint64_t) aHigh ) * bHigh; - zMiddleA +=3D zMiddleB; - z0 +=3D ( ( (uint64_t) ( zMiddleA < zMiddleB ) )<<32 ) + ( zMiddleA>>3= 2 ); - zMiddleA <<=3D 32; - z1 +=3D zMiddleA; - z0 +=3D ( z1 < zMiddleA ); - *z1Ptr =3D z1; - *z0Ptr =3D z0; - + mulu64(z1Ptr, z0Ptr, a, b); } =20 /*------------------------------------------------------------------------= ---- --=20 2.25.1