From aeed46206205cd26d5dc86f6b2009dc71433a91c Mon Sep 17 00:00:00 2001 From: Dragos Iulian Argint Date: Mon, 15 Aug 2022 00:50:22 +0300 Subject: [PATCH] Provide `__set_thread_area()` as glue code `__set_thread_area()` is a function that is usually architecture dependent, it sets the tls pointer in the fs register. An `arch_prctl` system call is used. We are replacing this call with a custom version because `arch_prctl()` is not implemented in Unikraft at the moment. Signed-off-by: Dragos Iulian Argint Reviewed-by: Florin Postolache Reviewed-by: Simon Kuenzer Reviewed-by: Cezar Craciunoiu Reviewed-by: Razvan Deaconescu Reviewed-by: Robert Kuban Approved-by: Simon Kuenzer Tested-by: Unikraft CI GitHub-Closes: #9 --- __set_thread_area.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 __set_thread_area.c diff --git a/__set_thread_area.c b/__set_thread_area.c new file mode 100644 index 0000000..7a0176c --- /dev/null +++ b/__set_thread_area.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * Authors: Dragos Iulian Argint + * + * Copyright (c) 2022, University POLITEHNICA of Bucharest. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include + +/* + * Change the architecture dependent archprtcl to ukplat_tlsp_set() + */ +int __set_thread_area(void *p) +{ + ukplat_tlsp_set((__uptr) p); + return 0; +} -- 2.39.5