projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| d1bddd3c CC |
1 | // ehdr_start_test.cc -- test for __ehdr_start linker-defined symbol. |
| 2 | ||
| 250d07de | 3 | // Copyright (C) 2014-2021 Free Software Foundation, Inc. |
| d1bddd3c CC |
4 | // Written by Cary Coutant <ccoutant@google.com>. |
| 5 | ||
| 6 | // This file is part of gold. | |
| 7 | ||
| 8 | // This program is free software; you can redistribute it and/or modify | |
| 9 | // it under the terms of the GNU General Public License as published by | |
| 10 | // the Free Software Foundation; either version 3 of the License, or | |
| 11 | // (at your option) any later version. | |
| 12 | ||
| 13 | // This program is distributed in the hope that it will be useful, | |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | // GNU General Public License for more details. | |
| 17 | ||
| 18 | // You should have received a copy of the GNU General Public License | |
| 19 | // along with this program; if not, write to the Free Software | |
| 20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
| 21 | // MA 02110-1301, USA. | |
| 22 | ||
| 23 | // The goal of this program is to produce as many different types of | |
| 24 | // relocations as we can in a stand-alone program that does not use | |
| 25 | // TLS. This program is compiled without optimization. | |
| 26 | ||
| 27 | #include "config.h" | |
| 28 | ||
| 29 | #include <cassert> | |
| 30 | #include <cstdio> | |
| 31 | ||
| 32 | #include "elfcpp.h" | |
| 33 | ||
| 34 | #ifdef EHDR_START_WEAK | |
| 35 | #define WEAK_ATTR __attribute__ ((weak)) | |
| 36 | #else | |
| 37 | #define WEAK_ATTR | |
| 38 | #endif | |
| 39 | ||
| 40 | extern char __ehdr_start[] WEAK_ATTR; | |
| 41 | ||
| 42 | int | |
| 43 | main() { | |
| 44 | printf("&__ehdr_start = %p\n", &__ehdr_start); | |
| 45 | ||
| 46 | #ifdef EHDR_START_UNDEF | |
| 47 | assert(&__ehdr_start == 0); | |
| 48 | #else | |
| 49 | assert(&__ehdr_start != NULL); | |
| 50 | ||
| 51 | printf("ELF header: \\x%02x%c%c%c\n", __ehdr_start[0], __ehdr_start[1], | |
| 52 | __ehdr_start[2], __ehdr_start[3]); | |
| 53 | #ifdef EHDR_START_USER_DEF | |
| 54 | assert(__ehdr_start[0] == 'a' | |
| 55 | && __ehdr_start[1] == 'b' | |
| 56 | && __ehdr_start[2] == 'c' | |
| 57 | && __ehdr_start[3] == 'd'); | |
| 58 | #else | |
| 59 | assert(__ehdr_start[elfcpp::EI_MAG0] == elfcpp::ELFMAG0 | |
| 60 | && __ehdr_start[elfcpp::EI_MAG1] == elfcpp::ELFMAG1 | |
| 61 | && __ehdr_start[elfcpp::EI_MAG2] == elfcpp::ELFMAG2 | |
| 62 | && __ehdr_start[elfcpp::EI_MAG3] == elfcpp::ELFMAG3); | |
| 63 | #endif | |
| 64 | #endif | |
| 65 | ||
| 66 | return 0; | |
| 67 | } |