From patchwork Mon Jul 10 12:15:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Huth X-Patchwork-Id: 1805694 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=cQWU27rR; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4R035w3rDZz20bq for ; Mon, 10 Jul 2023 22:21:56 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qIpof-0000y9-0G; Mon, 10 Jul 2023 08:16:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qIpoJ-0000nO-SM for qemu-devel@nongnu.org; Mon, 10 Jul 2023 08:16:12 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qIpoH-0003U9-3n for qemu-devel@nongnu.org; Mon, 10 Jul 2023 08:16:11 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1688991368; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XKG+IdrSFCbt8KYi+OUUAnu0eDxrPCRnBTiP1C63aFo=; b=cQWU27rRiZO+06JLmih3lCSZ7kRv9LNAIcV98ZPDBwf185fxrfQHEd+tJ8koLOJeaNM/Rk 83eWdN0n6HFpXXbcO3r7tTB4i/MUED1swn+FiPZCoE7iPqNj71nEQvonN+Bcq4nzxixm/W QBH/23wTiZ56fobDu+iGa/Y0YNZqWsw= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-164-MFNyCgjCMFmMEtEkQXaNvA-1; Mon, 10 Jul 2023 08:16:05 -0400 X-MC-Unique: MFNyCgjCMFmMEtEkQXaNvA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9F1AF101146C; Mon, 10 Jul 2023 12:16:04 +0000 (UTC) Received: from thuth.com (unknown [10.39.192.206]) by smtp.corp.redhat.com (Postfix) with ESMTP id 62090F66BA; Mon, 10 Jul 2023 12:16:03 +0000 (UTC) From: Thomas Huth To: qemu-devel@nongnu.org, Richard Henderson Cc: Ilya Leoshkevich , David Hildenbrand Subject: [PULL 13/21] tests/tcg/s390x: Test MVCRL with a large value in R0 Date: Mon, 10 Jul 2023 14:15:35 +0200 Message-Id: <20230710121543.197250-14-thuth@redhat.com> In-Reply-To: <20230710121543.197250-1-thuth@redhat.com> References: <20230710121543.197250-1-thuth@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Received-SPF: pass client-ip=170.10.133.124; envelope-from=thuth@redhat.com; helo=us-smtp-delivery-124.mimecast.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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Ilya Leoshkevich Add a small test to prevent regressions. Signed-off-by: Ilya Leoshkevich Reviewed-by: David Hildenbrand Message-Id: <20230704081506.276055-13-iii@linux.ibm.com> Signed-off-by: Thomas Huth --- tests/tcg/s390x/mie3-mvcrl.c | 46 ++++++++++++++++++++++++++++-------- 1 file changed, 36 insertions(+), 10 deletions(-) diff --git a/tests/tcg/s390x/mie3-mvcrl.c b/tests/tcg/s390x/mie3-mvcrl.c index 93c7b0a290..ec78dd1d49 100644 --- a/tests/tcg/s390x/mie3-mvcrl.c +++ b/tests/tcg/s390x/mie3-mvcrl.c @@ -1,29 +1,55 @@ +#include #include +#include #include - -static inline void mvcrl_8(const char *dst, const char *src) +static void mvcrl(const char *dst, const char *src, size_t len) { + register long r0 asm("r0") = len; + asm volatile ( - "llill %%r0, 8\n" ".insn sse, 0xE50A00000000, 0(%[dst]), 0(%[src])" - : : [dst] "d" (dst), [src] "d" (src) - : "r0", "memory"); + : : [dst] "d" (dst), [src] "d" (src), "r" (r0) + : "memory"); } - -int main(int argc, char *argv[]) +static bool test(void) { const char *alpha = "abcdefghijklmnop"; /* array missing 'i' */ - char tstr[17] = "abcdefghjklmnop\0" ; + char tstr[17] = "abcdefghjklmnop\0"; /* mvcrl reference use: 'open a hole in an array' */ - mvcrl_8(tstr + 9, tstr + 8); + mvcrl(tstr + 9, tstr + 8, 8); /* place missing 'i' */ tstr[8] = 'i'; - return strncmp(alpha, tstr, 16ul); + return strncmp(alpha, tstr, 16ul) == 0; +} + +static bool test_bad_r0(void) +{ + char src[256]; + + /* + * PoP says: Bits 32-55 of general register 0 should contain zeros; + * otherwise, the program may not operate compatibly in the future. + * + * Try it anyway in order to check whether this would crash QEMU itself. + */ + mvcrl(src, src, (size_t)-1); + + return true; +} + +int main(void) +{ + bool ok = true; + + ok &= test(); + ok &= test_bad_r0(); + + return ok ? EXIT_SUCCESS : EXIT_FAILURE; }