From nobody Tue Feb 10 11:14:35 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1644352716464795.4664430533476; Tue, 8 Feb 2022 12:38:36 -0800 (PST) Received: from localhost ([::1]:33536 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nHXFz-0001pC-Al for importer@patchew.org; Tue, 08 Feb 2022 15:38:35 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44686) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nHX9p-0006xN-1a; Tue, 08 Feb 2022 15:32:13 -0500 Received: from [187.72.171.209] (port=13564 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nHX9j-0001fq-MT; Tue, 08 Feb 2022 15:32:12 -0500 Received: from p9ibm ([10.10.71.235]) by outlook.eldorado.org.br over TLS secured channel with Microsoft SMTPSVC(8.5.9600.16384); Tue, 8 Feb 2022 17:31:57 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by p9ibm (Postfix) with ESMTP id 3E6A8801D1B; Tue, 8 Feb 2022 17:31:57 -0300 (-03) From: matheus.ferst@eldorado.org.br To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [RFC PATCH 1/3] tests/tcg/ppc64le: use inline asm instead of __builtin_mtfsf Date: Tue, 8 Feb 2022 17:31:43 -0300 Message-Id: <20220208203145.3844662-2-matheus.ferst@eldorado.org.br> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220208203145.3844662-1-matheus.ferst@eldorado.org.br> References: <20220208203145.3844662-1-matheus.ferst@eldorado.org.br> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-OriginalArrivalTime: 08 Feb 2022 20:31:57.0618 (UTC) FILETIME=[EB042920:01D81D2A] X-Host-Lookup-Failed: Reverse DNS lookup failed for 187.72.171.209 (failed) 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=187.72.171.209; envelope-from=matheus.ferst@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, PDS_HP_HELO_NORDNS=0.001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_TEMPERROR=0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, danielhb413@gmail.com, groug@kaod.org, clg@kaod.org, Matheus Ferst , david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1644352719860100001 Content-Type: text/plain; charset="utf-8" From: Matheus Ferst LLVM/Clang does not support __builtin_mtfsf. Signed-off-by: Matheus Ferst Acked-by: Alex Benn=C3=A9e --- tests/tcg/ppc64le/mtfsf.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/tests/tcg/ppc64le/mtfsf.c b/tests/tcg/ppc64le/mtfsf.c index b3d31f3637..bed5b1afa4 100644 --- a/tests/tcg/ppc64le/mtfsf.c +++ b/tests/tcg/ppc64le/mtfsf.c @@ -1,8 +1,12 @@ #include +#include #include #include #include =20 +#define MTFSF(FLM, FRB) asm volatile ("mtfsf %0, %1" :: "i" (FLM), "f" (FR= B)) +#define MFFS(FRT) asm("mffs %0" : "=3Df" (FRT)) + #define FPSCR_VE 7 /* Floating-point invalid operation exception enab= le */ #define FPSCR_VXSOFT 10 /* Floating-point invalid operation exception (sof= t) */ #define FPSCR_FI 17 /* Floating-point fraction inexact = */ @@ -21,10 +25,7 @@ void sigfpe_handler(int sig, siginfo_t *si, void *uconte= xt) =20 int main(void) { - union { - double d; - long long ll; - } fpscr; + uint64_t fpscr; =20 struct sigaction sa =3D { .sa_sigaction =3D sigfpe_handler, @@ -40,10 +41,9 @@ int main(void) prctl(PR_SET_FPEXC, PR_FP_EXC_PRECISE); =20 /* First test if the FI bit is being set correctly */ - fpscr.ll =3D FP_FI; - __builtin_mtfsf(0b11111111, fpscr.d); - fpscr.d =3D __builtin_mffs(); - assert((fpscr.ll & FP_FI) !=3D 0); + MTFSF(0b11111111, FP_FI); + MFFS(fpscr); + assert((fpscr & FP_FI) !=3D 0); =20 /* Then test if the deferred exception is being called correctly */ sigaction(SIGFPE, &sa, NULL); @@ -54,8 +54,7 @@ int main(void) * But if a different exception is chosen si_code check should * change accordingly. */ - fpscr.ll =3D FP_VE | FP_VXSOFT; - __builtin_mtfsf(0b11111111, fpscr.d); + MTFSF(0b11111111, FP_VE | FP_VXSOFT); =20 return 1; } --=20 2.25.1