From patchwork Thu Dec 19 18:32:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 182186 Delivered-To: patch@linaro.org Received: by 2002:a92:d0a:0:0:0:0:0 with SMTP id 10csp894318iln; Thu, 19 Dec 2019 11:13:05 -0800 (PST) X-Google-Smtp-Source: APXvYqyXPoOovEmirNlNELzh0TaQKur88FkcUNM34bxGGjl5aUwZ16r5EudzAe+/sqSYI15xLLIB X-Received: by 2002:aca:d6c8:: with SMTP id n191mr3133320oig.103.1576782784964; Thu, 19 Dec 2019 11:13:04 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1576782784; cv=none; d=google.com; s=arc-20160816; b=xrR/3+atgG+qWTyWjSYG1/jbjcXsJZ3WeftioopEuSJTDYtlHp2ksIYwJ0yhewAi/G YSSE1qdhteJHVqwRvGwwWVAaLpqRRtCrV4psLbhyA6aB2MSRrXfIoYm/U5pT32dYSD/G SUrgz+2j+s085XVpvyrSuPPaU+Zh/X3iG3k0I5CpdcWqf3qhl4QGHSz4tPDeSnCCacjW VOr/Bp0toyJ8vfpsuZ1kzxYmO7bgiZfAq1CaMpxeiuqpoIoMdDIoxSIk+MlkmseEJQsJ cpp6q563C2GbchFv50mifqVQgBGtEfetsjw+tqVs9YICq5dYlDFcJ5rgMfPeTcs0jK6L Ag+A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=dDq+WKl9XFwhH5McBizAftmJWiZ1h3imxqy/7AlKzWg=; b=ERB2kpD/4W1pRfc4DbKqEfgMIiG9eZNT3kdT7q+p4FLfl4/ap8D8UPZR/q4mx4oFRI 9hnDiVU/3yle1uZyjQf6Tc37aPya4/4uoWMN+wSkuKIEk0Q6ffaPNl9uH0lRjyrUDkTL wkdC6n8c7YmgqF4ZoRXNdcy2QieLx0MpDvMR19nUze2a/8KKqE4v3sZWTYhtaKXFI0Yn P9lNcjMoPCup+vWLYMggINX7e44R0lKQgdA1rOaZNYRK+B0sPyqTGwBq5S+lz4Mrs2+N Pk7lLLO3ISNztCefgwaRv7qoht0DjrrS/scp/5LGhzJL5GWFRhsWcotsgZKLB058Lhzt qFBw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=eP4d2ikt; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id v26si3819910otj.0.2019.12.19.11.13.03; Thu, 19 Dec 2019 11:13:03 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=eP4d2ikt; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728956AbfLSTGi (ORCPT + 27 others); Thu, 19 Dec 2019 14:06:38 -0500 Received: from mail.kernel.org ([198.145.29.99]:36194 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728725AbfLSSoQ (ORCPT ); Thu, 19 Dec 2019 13:44:16 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9DAAE206D7; Thu, 19 Dec 2019 18:44:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576781056; bh=m0Xi4nTk+oGEpyZ0wdmXOfeFk6InEJHjaHdGJ/1h9rE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eP4d2iktTl4Oky7cLXCiNtwnK49ZTEq4+Dsg/yA25mdeRMmTYTmYccKcnTO6a4mZb pdUAfOJHxZBeqwJLglfOx1oa2m+lgkZ0cX2CBJj+kuHBVhqxCER7CLje2Y4NfolBP4 FCmyTRK66kJPrKJx/UsJuDEgZUzE8pQcI66x+2ik= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Joel Stanley , Nick Desaulniers , Segher Boessenkool , Michael Ellerman , Sasha Levin Subject: [PATCH 4.9 064/199] powerpc/math-emu: Update macros from GCC Date: Thu, 19 Dec 2019 19:32:26 +0100 Message-Id: <20191219183218.541541530@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191219183214.629503389@linuxfoundation.org> References: <20191219183214.629503389@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Joel Stanley [ Upstream commit b682c8692442711684befe413cf93cf01c5324ea ] The add_ssaaaa, sub_ddmmss, umul_ppmm and udiv_qrnnd macros originate from GCC's longlong.h which in turn was copied from GMP's longlong.h a few decades ago. This was found when compiling with clang: arch/powerpc/math-emu/fnmsub.c:46:2: error: invalid use of a cast in a inline asm context requiring an l-value: remove the cast or build with -fheinous-gnu-extensions FP_ADD_D(R, T, B); ^~~~~~~~~~~~~~~~~ ... ./arch/powerpc/include/asm/sfp-machine.h:283:27: note: expanded from macro 'sub_ddmmss' : "=r" ((USItype)(sh)), \ ~~~~~~~~~~^~~ Segher points out: this was fixed in GCC over 16 years ago ( https://gcc.gnu.org/r56600 ), and in GMP (where it comes from) presumably before that. Update the add_ssaaaa, sub_ddmmss, umul_ppmm and udiv_qrnnd macros to the latest GCC version in order to git rid of the invalid casts. These were taken as-is from GCC's longlong in order to make future syncs obvious. Other parts of sfp-machine.h were left as-is as the file contains more features than present in longlong.h. Link: https://github.com/ClangBuiltLinux/linux/issues/260 Signed-off-by: Joel Stanley Reviewed-by: Nick Desaulniers Reviewed-by: Segher Boessenkool Signed-off-by: Michael Ellerman Signed-off-by: Sasha Levin --- arch/powerpc/include/asm/sfp-machine.h | 92 ++++++++------------------ 1 file changed, 29 insertions(+), 63 deletions(-) -- 2.20.1 diff --git a/arch/powerpc/include/asm/sfp-machine.h b/arch/powerpc/include/asm/sfp-machine.h index d89beaba26ff9..8b957aabb826d 100644 --- a/arch/powerpc/include/asm/sfp-machine.h +++ b/arch/powerpc/include/asm/sfp-machine.h @@ -213,30 +213,18 @@ * respectively. The result is placed in HIGH_SUM and LOW_SUM. Overflow * (i.e. carry out) is not stored anywhere, and is lost. */ -#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ +#define add_ssaaaa(sh, sl, ah, al, bh, bl) \ do { \ if (__builtin_constant_p (bh) && (bh) == 0) \ - __asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{aze|addze} %0,%2" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "%r" ((USItype)(ah)), \ - "%r" ((USItype)(al)), \ - "rI" ((USItype)(bl))); \ - else if (__builtin_constant_p (bh) && (bh) ==~(USItype) 0) \ - __asm__ ("{a%I4|add%I4c} %1,%3,%4\n\t{ame|addme} %0,%2" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "%r" ((USItype)(ah)), \ - "%r" ((USItype)(al)), \ - "rI" ((USItype)(bl))); \ + __asm__ ("add%I4c %1,%3,%4\n\taddze %0,%2" \ + : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\ + else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \ + __asm__ ("add%I4c %1,%3,%4\n\taddme %0,%2" \ + : "=r" (sh), "=&r" (sl) : "r" (ah), "%r" (al), "rI" (bl));\ else \ - __asm__ ("{a%I5|add%I5c} %1,%4,%5\n\t{ae|adde} %0,%2,%3" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "%r" ((USItype)(ah)), \ - "r" ((USItype)(bh)), \ - "%r" ((USItype)(al)), \ - "rI" ((USItype)(bl))); \ + __asm__ ("add%I5c %1,%4,%5\n\tadde %0,%2,%3" \ + : "=r" (sh), "=&r" (sl) \ + : "%r" (ah), "r" (bh), "%r" (al), "rI" (bl)); \ } while (0) /* sub_ddmmss is used in op-2.h and udivmodti4.c and should be equivalent to @@ -248,44 +236,24 @@ * and LOW_DIFFERENCE. Overflow (i.e. carry out) is not stored anywhere, * and is lost. */ -#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ +#define sub_ddmmss(sh, sl, ah, al, bh, bl) \ do { \ if (__builtin_constant_p (ah) && (ah) == 0) \ - __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfze|subfze} %0,%2" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "r" ((USItype)(bh)), \ - "rI" ((USItype)(al)), \ - "r" ((USItype)(bl))); \ - else if (__builtin_constant_p (ah) && (ah) ==~(USItype) 0) \ - __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{sfme|subfme} %0,%2" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "r" ((USItype)(bh)), \ - "rI" ((USItype)(al)), \ - "r" ((USItype)(bl))); \ + __asm__ ("subf%I3c %1,%4,%3\n\tsubfze %0,%2" \ + : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\ + else if (__builtin_constant_p (ah) && (ah) == ~(USItype) 0) \ + __asm__ ("subf%I3c %1,%4,%3\n\tsubfme %0,%2" \ + : "=r" (sh), "=&r" (sl) : "r" (bh), "rI" (al), "r" (bl));\ else if (__builtin_constant_p (bh) && (bh) == 0) \ - __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{ame|addme} %0,%2" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "r" ((USItype)(ah)), \ - "rI" ((USItype)(al)), \ - "r" ((USItype)(bl))); \ - else if (__builtin_constant_p (bh) && (bh) ==~(USItype) 0) \ - __asm__ ("{sf%I3|subf%I3c} %1,%4,%3\n\t{aze|addze} %0,%2" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "r" ((USItype)(ah)), \ - "rI" ((USItype)(al)), \ - "r" ((USItype)(bl))); \ + __asm__ ("subf%I3c %1,%4,%3\n\taddme %0,%2" \ + : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\ + else if (__builtin_constant_p (bh) && (bh) == ~(USItype) 0) \ + __asm__ ("subf%I3c %1,%4,%3\n\taddze %0,%2" \ + : "=r" (sh), "=&r" (sl) : "r" (ah), "rI" (al), "r" (bl));\ else \ - __asm__ ("{sf%I4|subf%I4c} %1,%5,%4\n\t{sfe|subfe} %0,%3,%2" \ - : "=r" ((USItype)(sh)), \ - "=&r" ((USItype)(sl)) \ - : "r" ((USItype)(ah)), \ - "r" ((USItype)(bh)), \ - "rI" ((USItype)(al)), \ - "r" ((USItype)(bl))); \ + __asm__ ("subf%I4c %1,%5,%4\n\tsubfe %0,%3,%2" \ + : "=r" (sh), "=&r" (sl) \ + : "r" (ah), "r" (bh), "rI" (al), "r" (bl)); \ } while (0) /* asm fragments for mul and div */ @@ -294,13 +262,10 @@ * UWtype integers MULTIPLER and MULTIPLICAND, and generates a two UWtype * word product in HIGH_PROD and LOW_PROD. */ -#define umul_ppmm(ph, pl, m0, m1) \ +#define umul_ppmm(ph, pl, m0, m1) \ do { \ USItype __m0 = (m0), __m1 = (m1); \ - __asm__ ("mulhwu %0,%1,%2" \ - : "=r" ((USItype)(ph)) \ - : "%r" (__m0), \ - "r" (__m1)); \ + __asm__ ("mulhwu %0,%1,%2" : "=r" (ph) : "%r" (m0), "r" (m1)); \ (pl) = __m0 * __m1; \ } while (0) @@ -312,9 +277,10 @@ * significant bit of DENOMINATOR must be 1, then the pre-processor symbol * UDIV_NEEDS_NORMALIZATION is defined to 1. */ -#define udiv_qrnnd(q, r, n1, n0, d) \ +#define udiv_qrnnd(q, r, n1, n0, d) \ do { \ - UWtype __d1, __d0, __q1, __q0, __r1, __r0, __m; \ + UWtype __d1, __d0, __q1, __q0; \ + UWtype __r1, __r0, __m; \ __d1 = __ll_highpart (d); \ __d0 = __ll_lowpart (d); \ \ @@ -325,7 +291,7 @@ if (__r1 < __m) \ { \ __q1--, __r1 += (d); \ - if (__r1 >= (d)) /* we didn't get carry when adding to __r1 */ \ + if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\ if (__r1 < __m) \ __q1--, __r1 += (d); \ } \