From patchwork Thu Aug 31 13:41:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jo Van Bulck X-Patchwork-Id: 13371597 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2BD9EC83F10 for ; Thu, 31 Aug 2023 13:42:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235584AbjHaNmO (ORCPT ); Thu, 31 Aug 2023 09:42:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345348AbjHaNmN (ORCPT ); Thu, 31 Aug 2023 09:42:13 -0400 Received: from icts-p-cavuit-4.kulnet.kuleuven.be (icts-p-cavuit-4.kulnet.kuleuven.be [134.58.240.134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4EBB81A4; Thu, 31 Aug 2023 06:42:10 -0700 (PDT) X-KULeuven-Envelope-From: jo.vanbulck@cs.kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: AB1C972.A7B6A X-KULeuven-Information: Katholieke Universiteit Leuven Received: from icts-p-ceifnet-smtps-0.kuleuven.be (icts-p-ceifnet-smtps.service.icts.svcd [IPv6:2a02:2c40:0:51:139:242:ac11:1e]) by icts-p-cavuit-4.kulnet.kuleuven.be (Postfix) with ESMTP id AB1C972; Thu, 31 Aug 2023 15:42:07 +0200 (CEST) BCmilterd-Mark-Subject: no BCmilterd-Errors: BCmilterd-Report: SA-HVU#DKIM_SIGNED#0.00,SA-HVU#DKIM_VALID_AU#0.00,SA-HVU#DKIM_VALID#0.00,SA-HVU#OURIPS#-35.00 X-CAV-Cluster: smtps DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cs.kuleuven.be; s=cav; t=1693489327; bh=Dbcgvjj2/3DnC52YEbfvErOQ6JTwtuPqEjnyjzLMBj8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=JNs1q39K8krqZhQU4AtwNJqvsmWyXrxHZQqYcPc9jJ/DOCM3d38bqBIIO6fJU7dKB H89aYbSE/IXH7B8/FJu9zurphBXyrWhSD29BunxCpb4lz496VEuFWtvNo1GrRwHN19 +NfK9L+q/VchJqS/eiJGrnVYjhKGZVTjPjNOrXoQ= Received: from localhost.localdomain (unknown [10.45.168.65]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by icts-p-ceifnet-smtps-0.kuleuven.be (Postfix) with ESMTPSA id 6F689D4F6196E; Thu, 31 Aug 2023 15:42:07 +0200 (CEST) X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Jo Van Bulck To: jarkko@kernel.org, kai.huang@intel.com, linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org Cc: dave.hansen@linux.intel.com, Jo Van Bulck Subject: [PATCH v5 05/13] selftests/sgx: Specify freestanding environment for enclave compilation Date: Thu, 31 Aug 2023 15:41:36 +0200 Message-Id: <20230831134144.22686-6-jo.vanbulck@cs.kuleuven.be> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230831134144.22686-1-jo.vanbulck@cs.kuleuven.be> References: <20230831134144.22686-1-jo.vanbulck@cs.kuleuven.be> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org Use -ffreestanding to assert the enclave compilation targets a freestanding environment (i.e., without "main" or standard libraries). This fixes clang reporting "undefined reference to `memset'" after erroneously optimizing away the provided memset/memcpy implementations. Still need to instruct the linker from using standard system startup functions, but drop -nostartfiles as it is implied by -nostdlib. Signed-off-by: Jo Van Bulck Reviewed-by: Jarkko Sakkinen Acked-by: Kai Huang --- tools/testing/selftests/sgx/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/sgx/Makefile b/tools/testing/selftests/sgx/Makefile index dcdd04b322f8..7eb890bdd3f0 100644 --- a/tools/testing/selftests/sgx/Makefile +++ b/tools/testing/selftests/sgx/Makefile @@ -14,7 +14,7 @@ endif INCLUDES := -I$(top_srcdir)/tools/include HOST_CFLAGS := -Wall -Werror -g $(INCLUDES) -fPIC HOST_LDFLAGS := -z noexecstack -lcrypto -ENCL_CFLAGS += -Wall -Werror -static -nostdlib -nostartfiles -fPIC \ +ENCL_CFLAGS += -Wall -Werror -static -nostdlib -ffreestanding -fPIC \ -fno-stack-protector -mrdrnd $(INCLUDES) ENCL_LDFLAGS := -Wl,-T,test_encl.lds,--build-id=none