From nobody Mon Feb 9 16:18:16 2026 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 AAD65C7EE2F for ; Mon, 12 Jun 2023 20:51:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238528AbjFLUvf (ORCPT ); Mon, 12 Jun 2023 16:51:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238119AbjFLUtI (ORCPT ); Mon, 12 Jun 2023 16:49:08 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8F13170C for ; Mon, 12 Jun 2023 13:46:56 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id F068E62F28 for ; Mon, 12 Jun 2023 20:45:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D86F5C43442; Mon, 12 Jun 2023 20:45:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686602716; bh=Z+V/mSZIwxrjw/qqhnVpPLMMERUm+X+LueBoG1mUtCQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RK8MCXjUF86Tz9XjkMAPMucGpoVut1ztAAj5YLlv4KxmkwZAm8IU12lTlY9PRfqsA SEq2+yngy61rZNNWtPUk1WJ8dyMr0wHd+VLOKdxspoKLNtKOLD1H4IbfRFlGrs8tUA EBjjdVzsK32ZaLquy5p/99FwSgFfoa/V/pUcTqSSEreiXTfRLz3omhxegdooi5uDKD dE0jkahXPzuNWYl2fpPN7MKMHSi9zsqQixE8YnHBK4z0xGQF+duuURF8lUHl5ueQj+ lkBDj2aMKu6h9Zai8NO7RmAfC+gNdPqj7b2LAdb8L+THa6mycBCzS/jat1N0HK1Lpo JM5pn/FLaj8RQ== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id D64D0CE3A5E; Mon, 12 Jun 2023 13:45:15 -0700 (PDT) From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: gwml@vger.gnuweeb.org, kernel-team@meta.com, w@lwt.eu, =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Willy Tarreau , "Paul E . McKenney" Subject: [PATCH v2 nolibc 20/53] tools/nolibc: aarch64: add stackprotector support Date: Mon, 12 Jun 2023 13:44:41 -0700 Message-Id: <20230612204514.292087-20-paulmck@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <8b757cc0-3719-4e63-a755-9710384137bc@paulmck-laptop> References: <8b757cc0-3719-4e63-a755-9710384137bc@paulmck-laptop> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Thomas Wei=C3=9Fschuh Signed-off-by: Thomas Wei=C3=9Fschuh Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney --- tools/include/nolibc/arch-aarch64.h | 7 ++++++- tools/testing/selftests/nolibc/Makefile | 1 + 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/include/nolibc/arch-aarch64.h b/tools/include/nolibc/arc= h-aarch64.h index 76ef26520c85..6a859131c530 100644 --- a/tools/include/nolibc/arch-aarch64.h +++ b/tools/include/nolibc/arch-aarch64.h @@ -172,10 +172,15 @@ struct sys_stat_struct { char **environ __attribute__((weak)); const unsigned long *_auxv __attribute__((weak)); =20 +#define __ARCH_SUPPORTS_STACK_PROTECTOR + /* startup code */ -void __attribute__((weak,noreturn,optimize("omit-frame-pointer"))) _start(= void) +void __attribute__((weak,noreturn,optimize("omit-frame-pointer"),no_stack_= protector)) _start(void) { __asm__ volatile ( +#ifdef NOLIBC_STACKPROTECTOR + "bl __stack_chk_init\n" /* initialize stack protector = */ +#endif "ldr x0, [sp]\n" /* argc (x0) was in the stack = */ "add x1, sp, 8\n" /* argv (x1) =3D sp = */ "lsl x2, x0, 3\n" /* envp (x2) =3D 8*argc ... = */ diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selfte= sts/nolibc/Makefile index 423d22f353a0..fa0075479a26 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -82,6 +82,7 @@ CFLAGS_STACKPROTECTOR =3D -DNOLIBC_STACKPROTECTOR \ CFLAGS_STKP_i386 =3D $(CFLAGS_STACKPROTECTOR) CFLAGS_STKP_x86_64 =3D $(CFLAGS_STACKPROTECTOR) CFLAGS_STKP_x86 =3D $(CFLAGS_STACKPROTECTOR) +CFLAGS_STKP_arm64 =3D $(CFLAGS_STACKPROTECTOR) CFLAGS_s390 =3D -m64 CFLAGS ?=3D -Os -fno-ident -fno-asynchronous-unwind-tables -std=3Dc89 \ $(call cc-option,-fno-stack-protector) \ --=20 2.40.1