From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 805C7C433EF for ; Tue, 25 Jan 2022 01:58:30 +0000 (UTC) Received: from localhost ([::1]:43548 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nCB6L-0007ZE-JA for qemu-devel@archiver.kernel.org; Mon, 24 Jan 2022 20:58:29 -0500 Received: from eggs.gnu.org ([209.51.188.92]:54806) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nCAfH-0002Hu-9a for qemu-devel@nongnu.org; Mon, 24 Jan 2022 20:30:34 -0500 Received: from [2607:f8b0:4864:20::d32] (port=34556 helo=mail-io1-xd32.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nCAfA-0001gC-Sg for qemu-devel@nongnu.org; Mon, 24 Jan 2022 20:30:28 -0500 Received: by mail-io1-xd32.google.com with SMTP id i62so6182432ioa.1 for ; Mon, 24 Jan 2022 17:30:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=LXI7ye1YfNMtjTAslCNcE2+lbnxuDIlXJX1FRpvyy5s=; b=by76lzPdcMqKcXlrnPfExhalarSTaw7HTQvdfuG7V1FS8N0wW1U1RUcnGvYm6ShyOy DctQyL4wHDZLZ/EEg/NyDA5dAWZ7MzTIFuBwyKfF/S1YLmryl/004SI/bpFuqxFs+WBF kjr0MFYf8bZAGqAHT5fNpzW5QBZZX1PyUVNLtEh39PQue5D8LXBO6zXY8dzk/H9b2HQr /6jI2eDYDVvIsnNk+caMnoY/g4HYNLkbHblR6I2TzUiHAGbeHOxTbDW/0rWc6STY/92l Zcwwlz/Ly6v0AIDdmcEduoJ8V69O4pmOAYzrlXJ8lkUpzjzQwizpjdedMKZGEqbRpOdW QXhQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=LXI7ye1YfNMtjTAslCNcE2+lbnxuDIlXJX1FRpvyy5s=; b=fUbPRtI8AkhfbhpH26ANc6zhm4fYIp0KyyrB2HB5j9N/QWwOwKl5r2OI8IfTty4dhr ny49dkzxTnyaEX4e38W0f9oGOl3rWF6xj9baDieKeAwY5LsPwSILLdllsWBieWuzOMY7 phmFzbPREiOrEo0Z4dSXzpT4uIKUbUte2CoyxNyaq9L66zPH+DQRFPWUoijWuYczx7zF +s4WHo5s+L/3V0N7vq2YotEE2vPQOYyWUMyZCEy+mKQ6G1lGuVMHbD6otBUR69Hu9XQ+ R6A43Amk0zT+EmUqk9voOOg5O+bD0fjk5SOQ8Cqm6ZisEQU8nW9/B/sNRK19K/GLUeIB nJyQ== X-Gm-Message-State: AOAM531rGZCKV4bgNPwS/gF4JamTbXgigTObbTLE8CgPwpVsvEaRnCS5 VQFvIxrUBXX+tq+quxzwoIOH/och/3u+Sg== X-Google-Smtp-Source: ABdhPJx2nmgm7ka9FxGWflh3zeZPD9u/GELdoKd6C5JKc0OQZiFk5ppCwLRHt1KcPjCl7SfsHyR4Ww== X-Received: by 2002:a5d:8b8c:: with SMTP id p12mr4036388iol.90.1643074223248; Mon, 24 Jan 2022 17:30:23 -0800 (PST) Received: from dune.bsdimp.com (50-253-99-174-static.hfc.comcastbusiness.net. [50.253.99.174]) by smtp.gmail.com with ESMTPSA id q14sm2061687ilo.63.2022.01.24.17.30.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jan 2022 17:30:22 -0800 (PST) From: Warner Losh To: qemu-devel@nongnu.org Subject: [PATCH v2 30/40] bsd-user/signal.c: sigset manipulation routines. Date: Mon, 24 Jan 2022 18:29:37 -0700 Message-Id: <20220125012947.14974-31-imp@bsdimp.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220125012947.14974-1-imp@bsdimp.com> References: <20220125012947.14974-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::d32 (failed) Received-SPF: none client-ip=2607:f8b0:4864:20::d32; envelope-from=imp@bsdimp.com; helo=mail-io1-xd32.google.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Stacey Son , Kyle Evans , Richard Henderson , def@FreeBSD.org, jrtc27@FreeBSD.org, Warner Losh Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" target_sigemptyset: resets a set to having no bits set target_sigaddset: adds a signal to a set target_sigismember: returns true when signal is a member host_to_target_sigset_internal: convert host sigset to target host_to_target_sigset: convert host sigset to target target_to_host_sigset_internal: convert target sigset to host target_to_host_sigset: convert target sigset to host Signed-off-by: Stacey Son Signed-off-by: Kyle Evans Signed-off-by: Warner Losh --- bsd-user/signal-common.h | 2 ++ bsd-user/signal.c | 74 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+) diff --git a/bsd-user/signal-common.h b/bsd-user/signal-common.h index 80e9503238a..ee819266f54 100644 --- a/bsd-user/signal-common.h +++ b/bsd-user/signal-common.h @@ -14,11 +14,13 @@ abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp); long do_sigreturn(CPUArchState *env); void force_sig_fault(int sig, int code, abi_ulong addr); int host_to_target_signal(int sig); +void host_to_target_sigset(target_sigset_t *d, const sigset_t *s); void process_pending_signals(CPUArchState *env); void queue_signal(CPUArchState *env, int sig, int si_type, target_siginfo_t *info); void signal_init(void); int target_to_host_signal(int sig); +void target_to_host_sigset(sigset_t *d, const target_sigset_t *s); /* * Within QEMU the top 8 bits of si_code indicate which of the parts of the diff --git a/bsd-user/signal.c b/bsd-user/signal.c index 34663f7a28a..84dafa4e9fe 100644 --- a/bsd-user/signal.c +++ b/bsd-user/signal.c @@ -32,6 +32,9 @@ static struct target_sigaction sigact_table[TARGET_NSIG]; static void host_signal_handler(int host_sig, siginfo_t *info, void *puc); +static void target_to_host_sigset_internal(sigset_t *d, + const target_sigset_t *s); + /* * The BSD ABIs use the same singal numbers across all the CPU architectures, so @@ -48,6 +51,25 @@ int target_to_host_signal(int sig) return sig; } +static inline void target_sigemptyset(target_sigset_t *set) +{ + memset(set, 0, sizeof(*set)); +} + +static inline void target_sigaddset(target_sigset_t *set, int signum) +{ + signum--; + uint32_t mask = (uint32_t)1 << (signum % TARGET_NSIG_BPW); + set->__bits[signum / TARGET_NSIG_BPW] |= mask; +} + +static inline int target_sigismember(const target_sigset_t *set, int signum) +{ + signum--; + abi_ulong mask = (abi_ulong)1 << (signum % TARGET_NSIG_BPW); + return (set->__bits[signum / TARGET_NSIG_BPW] & mask) != 0; +} + /* Adjust the signal context to rewind out of safe-syscall if we're in it */ static inline void rewind_if_in_safe_syscall(void *puc) { @@ -60,6 +82,58 @@ static inline void rewind_if_in_safe_syscall(void *puc) } } +/* + * Note: The following take advantage of the BSD signal property that all + * signals are available on all architectures. + */ +static void host_to_target_sigset_internal(target_sigset_t *d, + const sigset_t *s) +{ + int i; + + target_sigemptyset(d); + for (i = 1; i <= NSIG; i++) { + if (sigismember(s, i)) { + target_sigaddset(d, host_to_target_signal(i)); + } + } +} + +void host_to_target_sigset(target_sigset_t *d, const sigset_t *s) +{ + target_sigset_t d1; + int i; + + host_to_target_sigset_internal(&d1, s); + for (i = 0; i < _SIG_WORDS; i++) { + d->__bits[i] = tswap32(d1.__bits[i]); + } +} + +static void target_to_host_sigset_internal(sigset_t *d, + const target_sigset_t *s) +{ + int i; + + sigemptyset(d); + for (i = 1; i <= TARGET_NSIG; i++) { + if (target_sigismember(s, i)) { + sigaddset(d, target_to_host_signal(i)); + } + } +} + +void target_to_host_sigset(sigset_t *d, const target_sigset_t *s) +{ + target_sigset_t s1; + int i; + + for (i = 0; i < TARGET_NSIG_WORDS; i++) { + s1.__bits[i] = tswap32(s->__bits[i]); + } + target_to_host_sigset_internal(d, &s1); +} + static bool has_trapno(int tsig) { return tsig == TARGET_SIGILL || -- 2.33.1