From nobody Thu Nov 6 10:26:54 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1540289508388530.4425503511062; Tue, 23 Oct 2018 03:11:48 -0700 (PDT) Received: from localhost ([::1]:39208 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gEtf8-0005ys-Fv for importer@patchew.org; Tue, 23 Oct 2018 06:11:46 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:42531) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gEtdP-0004uw-KB for qemu-devel@nongnu.org; Tue, 23 Oct 2018 06:10:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gEtSU-0001Kn-Px for qemu-devel@nongnu.org; Tue, 23 Oct 2018 05:58:43 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:57589 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 1gEtSU-0000zQ-Ft for qemu-devel@nongnu.org; Tue, 23 Oct 2018 05:58:42 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 2D10C1A22A4; Tue, 23 Oct 2018 11:58:18 +0200 (CEST) Received: from rtrkw774-lin.domain.local (rtrkw774-lin.domain.local [10.10.13.43]) by mail.rt-rk.com (Postfix) with ESMTPSA id 0BB431A22A0; Tue, 23 Oct 2018 11:58:18 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com From: Aleksandar Markovic To: qemu-devel@nongnu.org Date: Tue, 23 Oct 2018 11:58:07 +0200 Message-Id: <1540288688-4482-3-git-send-email-aleksandar.markovic@rt-rk.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1540288688-4482-1-git-send-email-aleksandar.markovic@rt-rk.com> References: <1540288688-4482-1-git-send-email-aleksandar.markovic@rt-rk.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 89.216.37.149 Subject: [Qemu-devel] [PATCH 2/3] linux-user: Add support for semtimedop() syscall X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: arikalo@wavecomp.com, riku.voipio@iki.fi, ysu@wavecomp.com, laurent@vivier.eu, smarkovic@wavecomp.com, pjovanovic@wavecomp.com, aurelien@aurel32.net Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Aleksandar Rikalo Add support for semtimedop() emulation. Signed-off-by: Aleksandar Rikalo Signed-off-by: Aleksandar Markovic --- linux-user/syscall.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index b8435f2..4b00b72 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -6162,7 +6162,29 @@ static inline abi_long host_to_target_stat64(void *c= pu_env, return 0; } #endif +#ifdef TARGET_NR_semtimedop +static inline abi_long do_semtimedop(int semid, abi_long ptr, unsigned nso= ps, + abi_long timeout) +{ + struct sembuf sops[nsops]; + struct timespec ts, *pts; + + if (timeout) { + pts =3D &ts; + if (target_to_host_timespec(pts, timeout)) { + return -TARGET_EFAULT; + } + } else { + pts =3D NULL; + } =20 + if (target_to_host_sembuf(sops, ptr, nsops)) { + return -TARGET_EFAULT; + } + + return get_errno(semtimedop(semid, sops, nsops, pts)); +} +#endif /* ??? Using host futex calls even when target atomic operations are not really atomic probably breaks things. However implementing futexes locally would make futexes shared between multiple processes @@ -8661,6 +8683,11 @@ static abi_long do_syscall1(void *cpu_env, int num, = abi_long arg1, case TARGET_NR_semget: return get_errno(semget(arg1, arg2, arg3)); #endif +#ifdef TARGET_NR_semtimedop + case TARGET_NR_semtimedop: + ret =3D do_semtimedop(arg1, arg2, arg3, arg4); + break; +#endif #ifdef TARGET_NR_semop case TARGET_NR_semop: return do_semop(arg1, arg2, arg3); --=20 2.7.4