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// ehdr_start_test.cc -- test for __ehdr_start linker-defined symbol.
// Copyright (C) 2014-2015 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;
}
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