mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
68 lines
2.0 KiB
C++
68 lines
2.0 KiB
C++
// ehdr_start_test.cc -- test for __ehdr_start linker-defined symbol.
|
|
|
|
// Copyright (C) 2014-2019 Free Software Foundation, Inc.
|
|
// Written by Cary Coutant <ccoutant@google.com>.
|
|
|
|
// This file is part of gold.
|
|
|
|
// This program is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation; either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with this program; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
// MA 02110-1301, USA.
|
|
|
|
// The goal of this program is to produce as many different types of
|
|
// relocations as we can in a stand-alone program that does not use
|
|
// TLS. This program is compiled without optimization.
|
|
|
|
#include "config.h"
|
|
|
|
#include <cassert>
|
|
#include <cstdio>
|
|
|
|
#include "elfcpp.h"
|
|
|
|
#ifdef EHDR_START_WEAK
|
|
#define WEAK_ATTR __attribute__ ((weak))
|
|
#else
|
|
#define WEAK_ATTR
|
|
#endif
|
|
|
|
extern char __ehdr_start[] WEAK_ATTR;
|
|
|
|
int
|
|
main() {
|
|
printf("&__ehdr_start = %p\n", &__ehdr_start);
|
|
|
|
#ifdef EHDR_START_UNDEF
|
|
assert(&__ehdr_start == 0);
|
|
#else
|
|
assert(&__ehdr_start != NULL);
|
|
|
|
printf("ELF header: \\x%02x%c%c%c\n", __ehdr_start[0], __ehdr_start[1],
|
|
__ehdr_start[2], __ehdr_start[3]);
|
|
#ifdef EHDR_START_USER_DEF
|
|
assert(__ehdr_start[0] == 'a'
|
|
&& __ehdr_start[1] == 'b'
|
|
&& __ehdr_start[2] == 'c'
|
|
&& __ehdr_start[3] == 'd');
|
|
#else
|
|
assert(__ehdr_start[elfcpp::EI_MAG0] == elfcpp::ELFMAG0
|
|
&& __ehdr_start[elfcpp::EI_MAG1] == elfcpp::ELFMAG1
|
|
&& __ehdr_start[elfcpp::EI_MAG2] == elfcpp::ELFMAG2
|
|
&& __ehdr_start[elfcpp::EI_MAG3] == elfcpp::ELFMAG3);
|
|
#endif
|
|
#endif
|
|
|
|
return 0;
|
|
}
|