binutils-gdb/gold/testsuite/large_symbol_alignment.cc

50 lines
1.6 KiB
C++

// large_symbol_alignment.cc -- a test case for gold
// Copyright (C) 2013-2017 Free Software Foundation, Inc.
// Written by Alexander Ivchenko <alexander.ivchenko@intel.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 verify that Gold correctly aligns
// the symbol with a large alignemnt (often larger than the page size).
#include <stdint.h>
__attribute__ ((aligned(8192))) int aligned_8k_var;
__attribute__ ((aligned(4096))) int aligned_4k_var;
__attribute__ ((aligned(16384))) int aligned_16k_var;
bool
is_aligned(const int& var, int align) __attribute__((noinline));
bool
is_aligned(const int& var, int align)
{
return (reinterpret_cast<uintptr_t>(&var) & (align - 1)) == 0;
}
int
main()
{
if (!is_aligned(aligned_16k_var, 16384)
|| !is_aligned(aligned_8k_var, 8192)
|| !is_aligned(aligned_4k_var, 4096))
return 1;
return 0;
}