1 //===-- Implementation file of __libc_fini_array --------------------------===// 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 #include "src/__support/macros/config.h" 10 #include <stddef.h> 11 #include <stdint.h> 12 13 namespace LIBC_NAMESPACE_DECL { 14 15 extern "C" { 16 extern uintptr_t __fini_array_start[]; 17 extern uintptr_t __fini_array_end[]; 18 } 19 20 using FiniCallback = void(void); 21 22 extern "C" void __libc_fini_array(void) { 23 size_t fini_array_size = __fini_array_end - __fini_array_start; 24 for (size_t i = fini_array_size; i > 0; --i) 25 reinterpret_cast<FiniCallback *>(__fini_array_start[i - 1])(); 26 } 27 28 } // namespace LIBC_NAMESPACE_DECL 29