From patchwork Mon Jun 8 00:06:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Thibault X-Patchwork-Id: 1304916 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=sourceware.org (client-ip=8.43.85.97; helo=sourceware.org; envelope-from=libc-alpha-bounces@sourceware.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ens-lyon.org Received: from sourceware.org (server2.sourceware.org [8.43.85.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 49gD885LHBz9sRN for ; Mon, 8 Jun 2020 10:07:04 +1000 (AEST) Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 967233870897; Mon, 8 Jun 2020 00:06:44 +0000 (GMT) X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from hera.aquilenet.fr (hera.aquilenet.fr [185.233.100.1]) by sourceware.org (Postfix) with ESMTPS id 01A9E3851C25 for ; Mon, 8 Jun 2020 00:06:41 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 01A9E3851C25 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=ens-lyon.org Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=samuel.thibault@ens-lyon.org Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id E754D37F7; Mon, 8 Jun 2020 02:06:40 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qdWF3frAtt3f; Mon, 8 Jun 2020 02:06:40 +0200 (CEST) Received: from function (lfbn-bor-1-797-11.w86-234.abo.wanadoo.fr [86.234.239.11]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 8372237FA; Mon, 8 Jun 2020 02:06:37 +0200 (CEST) Received: from samy by function with local (Exim 4.93) (envelope-from ) id 1ji5JD-00EtuT-Jx; Mon, 08 Jun 2020 02:06:35 +0200 From: Samuel Thibault To: libc-alpha@sourceware.org Subject: [hurd,commited 1/5] hurd: Fix unwinding over interruptible RPC Date: Mon, 8 Jun 2020 02:06:29 +0200 Message-Id: <20200608000633.3551460-2-samuel.thibault@ens-lyon.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200608000633.3551460-1-samuel.thibault@ens-lyon.org> References: <20200608000633.3551460-1-samuel.thibault@ens-lyon.org> MIME-Version: 1.0 X-Spam-Status: No, score=-1.4 required=5.0 tests=BAYES_00, GIT_PATCH_0, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, SPF_HELO_PASS, SPF_NEUTRAL, TXREP, UNWANTED_LANGUAGE_BODY autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: commit-hurd@gnu.org Errors-To: libc-alpha-bounces@sourceware.org Sender: "Libc-alpha" * sysdeps/mach/hurd/i386/intr-msg.h (INTR_MSG_TRAP): Set CFA register to %ecx while %esp is altered. --- sysdeps/mach/hurd/i386/intr-msg.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sysdeps/mach/hurd/i386/intr-msg.h b/sysdeps/mach/hurd/i386/intr-msg.h index 54420fed01..70e6cc6592 100644 --- a/sysdeps/mach/hurd/i386/intr-msg.h +++ b/sysdeps/mach/hurd/i386/intr-msg.h @@ -37,10 +37,12 @@ " movl %6, %%eax\n" \ " jmp _hurd_intr_rpc_msg_sp_restored\n" \ "_hurd_intr_rpc_msg_do: movl %%esp, %%ecx\n" \ + " .cfi_def_cfa_register %%ecx\n" \ " leal %4, %%esp\n" \ "_hurd_intr_rpc_msg_cx_sp: movl $-25, %%eax\n" \ "_hurd_intr_rpc_msg_do_trap: lcall $7, $0 # status in %0\n" \ "_hurd_intr_rpc_msg_in_trap: movl %%ecx, %%esp\n" \ + " .cfi_def_cfa_register %%esp\n" \ "_hurd_intr_rpc_msg_sp_restored:" \ : "=a" (err), "+m" (option), "+m" (timeout), "=m" (*intr_port_p) \ : "m" ((&msg)[-1]), "m" (*cancel_p), "i" (EINTR) \