From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=34905 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PmKEt-0002r5-CI for qemu-devel@nongnu.org; Mon, 07 Feb 2011 01:06:20 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PmKEr-0001XE-On for qemu-devel@nongnu.org; Mon, 07 Feb 2011 01:06:18 -0500 Received: from smtp.gentoo.org ([140.211.166.183]:48128) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PmKEr-0001TA-FE for qemu-devel@nongnu.org; Mon, 07 Feb 2011 01:06:17 -0500 From: Mike Frysinger Date: Mon, 7 Feb 2011 01:05:51 -0500 Message-Id: <1297058757-7611-3-git-send-email-vapier@gentoo.org> In-Reply-To: <1297058757-7611-1-git-send-email-vapier@gentoo.org> References: <1297058757-7611-1-git-send-email-vapier@gentoo.org> Subject: [Qemu-devel] [PATCH 3/9] linux-user: add ppoll syscall support List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, Riku Voipio Some architectures (like Blackfin) only implement ppoll (and skip poll). So add support for it using existing poll code. Reviewed-by: Peter Maydell Signed-off-by: Mike Frysinger --- linux-user/syscall.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 55 insertions(+), 2 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 6116ab5..bb6ef43 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -529,6 +529,15 @@ static int sys_inotify_init1(int flags) #undef TARGET_NR_inotify_rm_watch #endif /* CONFIG_INOTIFY */ +#if defined(TARGET_NR_ppoll) +#ifndef __NR_ppoll +# define __NR_ppoll -1 +#endif +#define __NR_sys_ppoll __NR_ppoll +_syscall5(int, sys_ppoll, struct pollfd *, fds, nfds_t, nfds, + struct timespec *, timeout, const __sigset_t *, sigmask, + size_t, sigsetsize) +#endif extern int personality(int); extern int flock(int, int); @@ -6230,8 +6239,13 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = do_select(arg1, arg2, arg3, arg4, arg5); break; #endif -#ifdef TARGET_NR_poll +#if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) +# ifdef TARGET_NR_poll case TARGET_NR_poll: +# endif +# ifdef TARGET_NR_ppoll + case TARGET_NR_ppoll: +# endif { struct target_pollfd *target_pfd; unsigned int nfds = arg2; @@ -6242,12 +6256,51 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, target_pfd = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_pollfd) * nfds, 1); if (!target_pfd) goto efault; + pfd = alloca(sizeof(struct pollfd) * nfds); for(i = 0; i < nfds; i++) { pfd[i].fd = tswap32(target_pfd[i].fd); pfd[i].events = tswap16(target_pfd[i].events); } - ret = get_errno(poll(pfd, nfds, timeout)); + +# ifdef TARGET_NR_ppoll + if (num == TARGET_NR_ppoll) { + struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; + target_sigset_t *target_set; + sigset_t _set, *set = &_set; + + if (arg3) { + if (target_to_host_timespec(timeout_ts, arg3)) { + unlock_user(target_pfd, arg1, 0); + goto efault; + } + } else { + timeout_ts = NULL; + } + + if (arg4) { + target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1); + if (!target_set) { + unlock_user(target_pfd, arg1, 0); + goto efault; + } + target_to_host_sigset(set, target_set); + } else { + set = NULL; + } + + ret = get_errno(sys_ppoll(pfd, nfds, timeout_ts, set, _NSIG/8)); + + if (!is_error(ret) && arg3) { + host_to_target_timespec(arg3, timeout_ts); + } + if (arg4) { + unlock_user(target_set, arg4, 0); + } + } else +# endif + ret = get_errno(poll(pfd, nfds, timeout)); + if (!is_error(ret)) { for(i = 0; i < nfds; i++) { target_pfd[i].revents = tswap16(pfd[i].revents); -- 1.7.4