| 1 | //===-- Implementation file of __libc_init_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 __preinit_array_start[]; |
| 17 | extern uintptr_t __preinit_array_end[]; |
| 18 | extern uintptr_t __init_array_start[]; |
| 19 | extern uintptr_t __init_array_end[]; |
| 20 | } |
| 21 | |
| 22 | using InitCallback = void(void); |
| 23 | |
| 24 | extern "C"void __libc_init_array(void) { |
| 25 | size_t preinit_array_size = __preinit_array_end - __preinit_array_start; |
| 26 | for (size_t i = 0; i < preinit_array_size; ++i) |
| 27 | reinterpret_cast<InitCallback *>(__preinit_array_start[i])(); |
| 28 | size_t init_array_size = __init_array_end - __init_array_start; |
| 29 | for (size_t i = 0; i < init_array_size; ++i) |
| 30 | reinterpret_cast<InitCallback *>(__init_array_start[i])(); |
| 31 | } |
| 32 | |
| 33 | } // namespace LIBC_NAMESPACE_DECL |
| 34 |