1 //===-- Linux implementation of __restore_rt ------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // This file is implemented separately from sigaction.cpp so that we can 10 // strongly control the options this file is compiled with. __restore_rt cannot 11 // make any stack allocations so we must ensure this. 12 13 #include "src/__support/OSUtil/syscall.h" 14 15 #include <sys/syscall.h> 16 17 namespace LIBC_NAMESPACE { 18 19 extern "C" void __restore_rt() 20 __attribute__((no_sanitize("all"), 21 hidden)); 22 __restore_rt()23extern "C" void __restore_rt() { 24 LIBC_NAMESPACE::syscall_impl<long>(SYS_rt_sigreturn); 25 } 26 27 } // namespace LIBC_NAMESPACE 28