From patchwork Mon Apr 17 16:01:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13214326 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 4D958C77B7F for ; Mon, 17 Apr 2023 16:02:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=H3161DB7f0vHB4Q6vO2u0D7LyoacSm3zzkmq/9XSy3Y=; b=FAjFMXDjaLJZGt FdZElND1uwgZeuj1IGiTvuDul6eUklRzv+sljq3Fp7GlcUKLCAeRZSl7yLMp5naN/4WvLIEPh/Ctp DrVyJTZbERTbLaG6KpDpwoTwrtnczXY0XGILvT9FQLJcM6VrSrrvard1QYxPUpKfYWAQ4xt4xoyBY zrd00XwhPxTjg0rbhuYgBxXVB5gz9i05ZnIwjHCg3u7NwL0FxIA2W6Ygu1fn2uZYUlwZCjeGnGbUg Q1ay0ejq/ELT8kj4MuUA23Ew19nvH+3UShy4qpBtSQ3DTi4djftgC2Ec3eV0xgyotktzCkCHFn1xq 1dnxOpTFVdWag2GRV21A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1poRIf-00Gz7y-0d; Mon, 17 Apr 2023 16:01:53 +0000 Received: from todd.t-8ch.de ([2a01:4f8:c010:41de::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1poRIa-00Gz57-36 for linux-riscv@lists.infradead.org; Mon, 17 Apr 2023 16:01:51 +0000 From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1681747301; bh=SV0Pfjea32iU3JBvNhAyFOVe6JmW/5ny34KehlAaMpA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=lWv1JXoYtakTyiNDYa/TeNwAU31PURgcwCqVsGD4/q5qFlBxCY0h1y5ejdkSCnJ20 Z47/xWEwPa+FMm80bhxbU9c0OFjQ4UrcO43l81++9ogfrn57E4iYrX1B5yAu6GAIir FaaxpWRVks96uRnB9CIAWnH6AEOpZM/37KEuCDDA= Date: Mon, 17 Apr 2023 18:01:34 +0200 Subject: [PATCH 4/6] tools/nolibc: arm: add stackprotector support MIME-Version: 1.0 Message-Id: <20230408-nolibc-stackprotector-archs-v1-4-271f5c859c71@weissschuh.net> References: <20230408-nolibc-stackprotector-archs-v1-0-271f5c859c71@weissschuh.net> In-Reply-To: <20230408-nolibc-stackprotector-archs-v1-0-271f5c859c71@weissschuh.net> To: Willy Tarreau , Shuah Khan , Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1681747300; l=1785; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=SV0Pfjea32iU3JBvNhAyFOVe6JmW/5ny34KehlAaMpA=; b=EB+dNZdkDJrv6azXMGBN10cFMiivbrmQOw2HL0nVG2U9hWxrpdzMeQwV5Sy22HibCOaIooGPb JxG5x4qjtw+Dv3Db1ADLT9rS6NSajpzDvv2Uwu+cMIcxCwn+uhuvHGN X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230417_090149_640867_7139BB6E X-CRM114-Status: UNSURE ( 7.90 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Signed-off-by: Thomas Weißschuh --- tools/include/nolibc/arch-arm.h | 7 ++++++- tools/testing/selftests/nolibc/Makefile | 1 + 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/include/nolibc/arch-arm.h b/tools/include/nolibc/arch-arm.h index 2eab1aef321b..202e64f537dc 100644 --- a/tools/include/nolibc/arch-arm.h +++ b/tools/include/nolibc/arch-arm.h @@ -199,10 +199,15 @@ struct sys_stat_struct { char **environ __attribute__((weak)); const unsigned long *_auxv __attribute__((weak)); +#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 "pop {%r0}\n" /* argc was in the stack */ "mov %r1, %sp\n" /* argv = sp */ diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index d68e96afea80..8feffc790a31 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -83,6 +83,7 @@ CFLAGS_STKP_i386 = $(CFLAGS_STACKPROTECTOR) CFLAGS_STKP_x86_64 = $(CFLAGS_STACKPROTECTOR) CFLAGS_STKP_x86 = $(CFLAGS_STACKPROTECTOR) CFLAGS_STKP_arm64 = $(CFLAGS_STACKPROTECTOR) +CFLAGS_STKP_arm = $(CFLAGS_STACKPROTECTOR) CFLAGS_STKP_riscv = $(CFLAGS_STACKPROTECTOR) CFLAGS_s390 = -m64 CFLAGS ?= -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 \