From nobody Tue Feb 10 01:59:56 2026 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.zoho.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 1494595036522877.9034664886755; Fri, 12 May 2017 06:17:16 -0700 (PDT) Received: from localhost ([::1]:53772 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d9ARW-0000Nb-0Z for importer@patchew.org; Fri, 12 May 2017 09:17:14 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50037) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d98LK-00043W-Lf for qemu-devel@nongnu.org; Fri, 12 May 2017 07:02:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d98LI-0006SN-5C for qemu-devel@nongnu.org; Fri, 12 May 2017 07:02:42 -0400 Received: from mx2.rt-rk.com ([89.216.37.149]:46741 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 1d98LH-0006RZ-UA for qemu-devel@nongnu.org; Fri, 12 May 2017 07:02:40 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.rt-rk.com (Postfix) with ESMTP id 8010A1A4547; Fri, 12 May 2017 13:02:12 +0200 (CEST) Received: from rtrkw488-lin.domain.local (unknown [10.10.14.90]) by mail.rt-rk.com (Postfix) with ESMTPSA id 1D4341A49FD; Fri, 12 May 2017 13:02:12 +0200 (CEST) X-Virus-Scanned: amavisd-new at rt-rk.com From: =?UTF-8?q?Milo=C5=A1=20Stojanovi=C4=87?= To: qemu-devel@nongnu.org, riku.voipio@iki.fi Date: Fri, 12 May 2017 13:02:21 +0200 Message-Id: <1494586944-7253-14-git-send-email-Milos.Stojanovic@rt-rk.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1494586944-7253-1-git-send-email-Milos.Stojanovic@rt-rk.com> References: <1494586944-7253-1-git-send-email-Milos.Stojanovic@rt-rk.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 89.216.37.149 X-Mailman-Approved-At: Fri, 12 May 2017 09:02:56 -0400 Subject: [Qemu-devel] [PATCH 13/16] [RFC] linux-user: add functions for working with the target signal mask 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: Milos.Stojanovic@rt-rk.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" Add functions tswapal_target_sigset(), target_to_abi_ulong_old_sigset() and abi_ulong_to_target_old_sigset(). The tswapal_target_sigset() function transforms target signal sets from target to host endianness. This is helpful for tracking and working with the target signal masks in the host endianness rather then keeping it in the target endianness. The target_to_abi_ulong_old_sigset() and abi_ulong_to_target_old_sigset() functions are used for translating the signal set between the old way of storing it in abi_ulong and the new target_sigset_t structure. They can be used for expanding old implementations of certain system calls to include the tracking of the target signal masks. Signed-off-by: Milo=C5=A1 Stojanovi=C4=87 --- linux-user/signal.c | 27 +++++++++++++++++++++++++++ linux-user/syscall_defs.h | 4 ++++ 2 files changed, 31 insertions(+) diff --git a/linux-user/signal.c b/linux-user/signal.c index d72caaf..0c1e231 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -207,6 +207,33 @@ void target_to_host_old_sigset(sigset_t *sigset, target_to_host_sigset(sigset, &d); } =20 +static void tswapal_target_sigset(target_sigset_t *d, const target_sigset_= t *s) +{ + int i; + + for (i =3D 0; i < TARGET_NSIG_WORDS; i++) { + d->sig[i] =3D tswapal(s->sig[i]); + } +} + +void target_to_abi_ulong_old_sigset(abi_ulong *old_sigset, + const target_sigset_t *target_sigset) +{ + target_sigset_t d; + tswapal_target_sigset(&d, target_sigset); + + memcpy(old_sigset, &d.sig, sizeof(target_sigset_t)); +} + +void abi_ulong_to_target_old_sigset(target_sigset_t *target_sigset, + const abi_ulong *old_sigset) +{ + target_sigset_t d; + + memcpy(&d.sig, old_sigset, sizeof(target_sigset_t)); + tswapal_target_sigset(target_sigset, &d); +} + int block_signals(void) { TaskState *ts =3D (TaskState *)thread_cpu->opaque; diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index 40c5027..7eec420 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -426,6 +426,10 @@ void host_to_target_old_sigset(abi_ulong *old_sigset, const sigset_t *sigset); void target_to_host_old_sigset(sigset_t *sigset, const abi_ulong *old_sigset); +void target_to_abi_ulong_old_sigset(abi_ulong *old_sigset, + const target_sigset_t *target_sigset); +void abi_ulong_to_target_old_sigset(target_sigset_t *target_sigset, + const abi_ulong *old_sigset); struct target_sigaction; int do_sigaction(int sig, const struct target_sigaction *act, struct target_sigaction *oact); --=20 1.9.1