From patchwork Mon May 17 18:13:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 1479735 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=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 ozlabs.org (Postfix) with ESMTPS id 4FkSMl1cR2z9sWQ for ; Tue, 18 May 2021 04:29:23 +1000 (AEST) Received: from localhost ([::1]:58070 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lihzV-0003vf-6Q for incoming@patchwork.ozlabs.org; Mon, 17 May 2021 14:29:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33752) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lihlO-0005wX-As for qemu-devel@nongnu.org; Mon, 17 May 2021 14:14:46 -0400 Received: from mout.kundenserver.de ([212.227.126.133]:56609) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lihlC-0004MN-2X for qemu-devel@nongnu.org; Mon, 17 May 2021 14:14:46 -0400 Received: from quad ([82.142.31.78]) by mrelayeu.kundenserver.de (mreue010 [212.227.15.167]) with ESMTPSA (Nemesis) id 1MGQWr-1lhqIN42cX-00GsAE; Mon, 17 May 2021 20:14:31 +0200 From: Laurent Vivier To: qemu-devel@nongnu.org Subject: [PULL 10/59] linux-user: Pass CPUArchState to do_sigaltstack Date: Mon, 17 May 2021 20:13:35 +0200 Message-Id: <20210517181424.8093-11-laurent@vivier.eu> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517181424.8093-1-laurent@vivier.eu> References: <20210517181424.8093-1-laurent@vivier.eu> MIME-Version: 1.0 X-Provags-ID: V03:K1:rUPu/Ygw+LvHp9Wjf8l2RpYT6LpUCOl6JEMc0tmqKV5B78E6zj6 K3GtAATnkBgR1MC1UNCU89t42CR5pHZ/X5m5782YT9o8igQAi378WpzdeQ16AvlOIaNbH7r D1anWo6btLVOYOCrpKPf3R+frQJo4DkfapG/RaWWMLzH4GF26tCxez2xLau23Y4wccKdc8p pt83h5AKn4+SFQRVibvHw== X-UI-Out-Filterresults: notjunk:1;V03:K0:OUgD/KsezNg=:0ELVijqLDOxQn7t7W0VpOi InhouWLt25pUedyT8bnL3LwWRBuF18Q9hu3awogNBXBSiE/OH0DwkTDC3S9+0WGOxBqUcaoNc GWkN80xpZJtAKXNUKkA0+9ljk9fg/XplD1/8CZ4Hxs22dG97cE4hVlUyN6q0k4s0ETh7PDK/j nb6o8Rv4t7bGCMN0Md4+jICBj93KhChBykC2P5hB2J8mvzwiMwaMPSFpHkY5Mtc7EDRka6WNb PD2iAnzZ2c2JSctN7XEWSmy69/OjAWVn/87WnwalvbhNUfR/7NY4OAhx33kwue0N2kEZJZTG2 z+2dQmR2h9qxJtxon3G140ape9xWuNwp3CYB8VNObl3lpp6cmqhHB1jMIOvJJubAzJkoRarOf G1HETELeQjNnyBoSGYMr+JPB9dNa/0GMyAmLYFvJKC9xkqQid8T5mTQBBYy+R3TduWslQaPgv PeG9/aGGWMLeXqGJEpE0o+9ND6HtN2/h/moKWthsKj0zdaPb85Vc/2nnhfDAxhpIa1ehXFBYb mvI3hfG11i/ZjCsr6ZQDCs= Received-SPF: none client-ip=212.227.126.133; envelope-from=laurent@vivier.eu; helo=mout.kundenserver.de X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Richard Henderson , Laurent Vivier Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson Now that we have exactly one call, it's easy to pass in env instead of passing in the sp value. Use target_save_altstack, which required env. Signed-off-by: Richard Henderson Message-Id: <20210426025334.1168495-4-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier --- linux-user/qemu.h | 3 ++- linux-user/signal.c | 11 ++++------- linux-user/syscall.c | 3 +-- 3 files changed, 7 insertions(+), 10 deletions(-) diff --git a/linux-user/qemu.h b/linux-user/qemu.h index 74e06e7121c5..3b0b6b75fe8f 100644 --- a/linux-user/qemu.h +++ b/linux-user/qemu.h @@ -432,7 +432,8 @@ int target_to_host_signal(int sig); int host_to_target_signal(int sig); long do_sigreturn(CPUArchState *env); long do_rt_sigreturn(CPUArchState *env); -abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); +abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, + CPUArchState *env); int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset); abi_long do_swapcontext(CPUArchState *env, abi_ulong uold_ctx, abi_ulong unew_ctx, abi_long ctx_size); diff --git a/linux-user/signal.c b/linux-user/signal.c index 9daa89eac5db..2e1095055b7c 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -800,21 +800,18 @@ static void host_signal_handler(int host_signum, siginfo_t *info, /* do_sigaltstack() returns target values and errnos. */ /* compare linux/kernel/signal.c:do_sigaltstack() */ -abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) +abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, + CPUArchState *env) { target_stack_t oss, *uoss = NULL; abi_long ret = -TARGET_EFAULT; if (uoss_addr) { - TaskState *ts = (TaskState *)thread_cpu->opaque; - /* Verify writability now, but do not alter user memory yet. */ if (!lock_user_struct(VERIFY_WRITE, uoss, uoss_addr, 0)) { goto out; } - __put_user(ts->sigaltstack_used.ss_sp, &oss.ss_sp); - __put_user(ts->sigaltstack_used.ss_size, &oss.ss_size); - __put_user(sas_ss_flags(sp), &oss.ss_flags); + target_save_altstack(&oss, env); } if (uss_addr) { @@ -823,7 +820,7 @@ abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp) if (!lock_user_struct(VERIFY_READ, uss, uss_addr, 1)) { goto out; } - ret = target_restore_altstack(uss, sp); + ret = target_restore_altstack(uss, get_sp_from_cpustate(env)); if (ret) { goto out; } diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 95d79ddc437a..4d52b2cfe36d 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -11195,8 +11195,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, return ret; } case TARGET_NR_sigaltstack: - return do_sigaltstack(arg1, arg2, - get_sp_from_cpustate((CPUArchState *)cpu_env)); + return do_sigaltstack(arg1, arg2, cpu_env); #ifdef CONFIG_SENDFILE #ifdef TARGET_NR_sendfile