32 lines · cpp
1//===------------ Linux implementation of an exit function ------*- C++ -*-===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/__support/OSUtil/linux/syscall.h" // syscall_impl10#include "src/__support/common.h"11#include "src/__support/macros/config.h"12#include <sys/syscall.h> // For syscall numbers.13 14namespace LIBC_NAMESPACE_DECL {15namespace internal {16 17// mark as no_stack_protector for x86 since TLS can be torn down before calling18// exit so that the stack protector canary cannot be loaded.19#ifdef LIBC_TARGET_ARCH_IS_X8620__attribute__((no_stack_protector))21#endif22__attribute__((noreturn)) void23exit(int status) {24 for (;;) {25 LIBC_NAMESPACE::syscall_impl<long>(SYS_exit_group, status);26 LIBC_NAMESPACE::syscall_impl<long>(SYS_exit, status);27 }28}29 30} // namespace internal31} // namespace LIBC_NAMESPACE_DECL32