From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5C5EEC433F5 for ; Wed, 15 Dec 2021 17:22:04 +0000 (UTC) Received: from localhost ([::1]:37972 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mxXyd-0004Ag-Ab for qemu-devel@archiver.kernel.org; Wed, 15 Dec 2021 12:22:03 -0500 Received: from eggs.gnu.org ([209.51.188.92]:37150) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mxXcQ-0005Lf-Ko for qemu-devel@nongnu.org; Wed, 15 Dec 2021 11:59:06 -0500 Received: from smtpout3.mo529.mail-out.ovh.net ([46.105.54.81]:41065) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mxXcG-0003U5-TS for qemu-devel@nongnu.org; Wed, 15 Dec 2021 11:59:06 -0500 Received: from mxplan5.mail.ovh.net (unknown [10.108.16.62]) by mo529.mail-out.ovh.net (Postfix) with ESMTPS id BC5BDD22657D; Wed, 15 Dec 2021 17:58:54 +0100 (CET) Received: from kaod.org (37.59.142.95) by DAG4EX1.mxp5.local (172.16.2.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.17; Wed, 15 Dec 2021 17:58:54 +0100 Authentication-Results: garm.ovh; auth=pass (GARM-95G0016449e6e2-00ec-4fa1-b4a5-a3fc78145e78, DB2000250E14A505ED1736C7348301D5E40ED0AA) smtp.auth=clg@kaod.org X-OVh-ClientIp: 90.76.172.47 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: , Subject: [PULL 004/102] test/tcg/ppc64le: test mtfsf Date: Wed, 15 Dec 2021 17:57:09 +0100 Message-ID: <20211215165847.321042-5-clg@kaod.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211215165847.321042-1-clg@kaod.org> References: <20211215165847.321042-1-clg@kaod.org> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [37.59.142.95] X-ClientProxiedBy: DAG8EX2.mxp5.local (172.16.2.72) To DAG4EX1.mxp5.local (172.16.2.31) X-Ovh-Tracer-GUID: ba9db1e9-8d1b-4ad9-8b49-e6bfd4345aea X-Ovh-Tracer-Id: 2219711670442625830 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvuddrledvgdeljecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfqggfjpdevjffgvefmvefgnecuuegrihhlohhuthemucehtddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvffufffkofgjfhggtgfgihesthekredtredtjeenucfhrhhomhepveorughrihgtucfnvgcuifhorghtvghruceotghlgheskhgrohgurdhorhhgqeenucggtffrrghtthgvrhhnpeehheefgeejiedtffefteejudevjeeufeeugfdtfeeuleeuteevleeihffhgfdtleenucfkpheptddrtddrtddrtddpfeejrdehledrudegvddrleehnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmohguvgepshhmthhpohhuthdphhgvlhhopehmgihplhgrnhehrdhmrghilhdrohhvhhdrnhgvthdpihhnvghtpedtrddtrddtrddtpdhmrghilhhfrhhomheptghlgheskhgrohgurdhorhhgpdhrtghpthhtoheptghlgheskhgrohgurdhorhhg Received-SPF: pass client-ip=46.105.54.81; envelope-from=clg@kaod.org; helo=smtpout3.mo529.mail-out.ovh.net X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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: Peter Maydell , "Lucas Mateus Castro \(alqotel\)" , Richard Henderson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: "Lucas Mateus Castro (alqotel)" Added tests for the mtfsf to check if FI bit of FPSCR is being set and if exception calls are being made correctly. Reviewed-by: Richard Henderson Signed-off-by: Lucas Mateus Castro (alqotel) Message-Id: <20211201163808.440385-3-lucas.araujo@eldorado.org.br> Signed-off-by: Cédric Le Goater --- tests/tcg/ppc64le/mtfsf.c | 61 +++++++++++++++++++++++++++++++ tests/tcg/ppc64/Makefile.target | 1 + tests/tcg/ppc64le/Makefile.target | 1 + 3 files changed, 63 insertions(+) create mode 100644 tests/tcg/ppc64le/mtfsf.c diff --git a/tests/tcg/ppc64le/mtfsf.c b/tests/tcg/ppc64le/mtfsf.c new file mode 100644 index 000000000000..b3d31f3637d9 --- /dev/null +++ b/tests/tcg/ppc64le/mtfsf.c @@ -0,0 +1,61 @@ +#include +#include +#include +#include + +#define FPSCR_VE 7 /* Floating-point invalid operation exception enable */ +#define FPSCR_VXSOFT 10 /* Floating-point invalid operation exception (soft) */ +#define FPSCR_FI 17 /* Floating-point fraction inexact */ + +#define FP_VE (1ull << FPSCR_VE) +#define FP_VXSOFT (1ull << FPSCR_VXSOFT) +#define FP_FI (1ull << FPSCR_FI) + +void sigfpe_handler(int sig, siginfo_t *si, void *ucontext) +{ + if (si->si_code == FPE_FLTINV) { + exit(0); + } + exit(1); +} + +int main(void) +{ + union { + double d; + long long ll; + } fpscr; + + struct sigaction sa = { + .sa_sigaction = sigfpe_handler, + .sa_flags = SA_SIGINFO + }; + + /* + * Enable the MSR bits F0 and F1 to enable exceptions. + * This shouldn't be needed in linux-user as these bits are enabled by + * default, but this allows to execute either in a VM or a real machine + * to compare the behaviors. + */ + prctl(PR_SET_FPEXC, PR_FP_EXC_PRECISE); + + /* First test if the FI bit is being set correctly */ + fpscr.ll = FP_FI; + __builtin_mtfsf(0b11111111, fpscr.d); + fpscr.d = __builtin_mffs(); + assert((fpscr.ll & FP_FI) != 0); + + /* Then test if the deferred exception is being called correctly */ + sigaction(SIGFPE, &sa, NULL); + + /* + * Although the VXSOFT exception has been chosen, based on test in a Power9 + * any combination of exception bit + its enabling bit should work. + * But if a different exception is chosen si_code check should + * change accordingly. + */ + fpscr.ll = FP_VE | FP_VXSOFT; + __builtin_mtfsf(0b11111111, fpscr.d); + + return 1; +} diff --git a/tests/tcg/ppc64/Makefile.target b/tests/tcg/ppc64/Makefile.target index 6ab7934fdff9..8f4c7ac4ed7d 100644 --- a/tests/tcg/ppc64/Makefile.target +++ b/tests/tcg/ppc64/Makefile.target @@ -11,6 +11,7 @@ endif bcdsub: CFLAGS += -mpower8-vector PPC64_TESTS += byte_reverse +PPC64_TESTS += mtfsf ifneq ($(DOCKER_IMAGE)$(CROSS_CC_HAS_POWER10),) run-byte_reverse: QEMU_OPTS+=-cpu POWER10 run-plugin-byte_reverse-with-%: QEMU_OPTS+=-cpu POWER10 diff --git a/tests/tcg/ppc64le/Makefile.target b/tests/tcg/ppc64le/Makefile.target index ba2fde5ff1c3..e031f65adcb3 100644 --- a/tests/tcg/ppc64le/Makefile.target +++ b/tests/tcg/ppc64le/Makefile.target @@ -16,6 +16,7 @@ byte_reverse: CFLAGS += -mcpu=power10 run-byte_reverse: QEMU_OPTS+=-cpu POWER10 run-plugin-byte_reverse-with-%: QEMU_OPTS+=-cpu POWER10 +PPC64LE_TESTS += mtfsf PPC64LE_TESTS += signal_save_restore_xer TESTS += $(PPC64LE_TESTS) -- 2.31.1