From patchwork Sat Jan 11 15:40:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandar Markovic X-Patchwork-Id: 11328901 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B5807921 for ; Sat, 11 Jan 2020 15:56:25 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 95213206ED for ; Sat, 11 Jan 2020 15:56:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 95213206ED Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=rt-rk.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:58596 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iqJ7g-0005yE-Ql for patchwork-qemu-devel@patchwork.kernel.org; Sat, 11 Jan 2020 10:56:24 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:42213) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iqJ1B-0004nN-NG for qemu-devel@nongnu.org; Sat, 11 Jan 2020 10:49:42 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iqJ1A-0005q8-DA for qemu-devel@nongnu.org; Sat, 11 Jan 2020 10:49:41 -0500 Received: from mx2.rt-rk.com ([89.216.37.149]:50515 helo=mail.rt-rk.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iqJ1A-0005kH-50 for qemu-devel@nongnu.org; Sat, 11 Jan 2020 10:49:40 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 0A9BF1A1FDA; Sat, 11 Jan 2020 16:49:38 +0100 (CET) X-Virus-Scanned: amavisd-new at rt-rk.com Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.14.106]) by mail.rt-rk.com (Postfix) with ESMTPSA id E5A921A1187; Sat, 11 Jan 2020 16:49:37 +0100 (CET) From: Aleksandar Markovic To: qemu-devel@nongnu.org Subject: [PATCH v4 18/19] linux-user: Add support for KCOV_ ioctls Date: Sat, 11 Jan 2020 16:40:40 +0100 Message-Id: <1578757241-29583-19-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1578757241-29583-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1578757241-29583-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: laurent@vivier.eu, amarkovic@wavecomp.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Aleksandar Markovic KCOV_ENABLE and KCOV_DISABLE play the role in kernel coverage tracing. These ioctls do not use the third argument of ioctl() system call and are straightforward to implement in QEMU. Signed-off-by: Aleksandar Markovic --- linux-user/ioctls.h | 5 +++++ linux-user/syscall.c | 3 +++ linux-user/syscall_defs.h | 4 ++++ 3 files changed, 12 insertions(+) diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h index d72cd76..39b3825 100644 --- a/linux-user/ioctls.h +++ b/linux-user/ioctls.h @@ -552,3 +552,8 @@ IOCTL_IGNORE(TIOCSTART) IOCTL_IGNORE(TIOCSTOP) #endif + +#ifdef CONFIG_KCOV + IOCTL(KCOV_ENABLE, 0, TYPE_NULL) + IOCTL(KCOV_DISABLE, 0, TYPE_NULL) +#endif diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 171c0ca..6edcb0d 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -73,6 +73,9 @@ #ifdef CONFIG_SENDFILE #include #endif +#ifdef CONFIG_KCOV +#include +#endif #define termios host_termios #define winsize host_winsize diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 225dcfb..87e390d 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -2457,6 +2457,10 @@ struct target_mtpos { #define TARGET_MTIOCGET TARGET_IOR('m', 2, struct target_mtget) #define TARGET_MTIOCPOS TARGET_IOR('m', 3, struct target_mtpos) +/* kcov ioctls */ +#define TARGET_KCOV_ENABLE TARGET_IO('c', 100) +#define TARGET_KCOV_DISABLE TARGET_IO('c', 101) + struct target_sysinfo { abi_long uptime; /* Seconds since boot */ abi_ulong loads[3]; /* 1, 5, and 15 minute load averages */