55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
// justsyms_1.cc -- test --just-symbols for gold
|
|
|
|
// Copyright 2008 Free Software Foundation, Inc.
|
|
// Written by Ian Lance Taylor <iant@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 Linux kernel builds an object file using a linker script, and
|
|
// then links against that object file using the -R option. This is a
|
|
// test for that usage.
|
|
|
|
#include <cassert>
|
|
#include <csignal>
|
|
#include <cstddef>
|
|
#include <cstdlib>
|
|
#include <stdint.h>
|
|
|
|
extern char justsyms_string[];
|
|
|
|
// We expect to get a SIGSEGV.
|
|
static void
|
|
handle_sigsegv(int)
|
|
{
|
|
exit(0);
|
|
}
|
|
|
|
int
|
|
main(int, char**)
|
|
{
|
|
// The linker script should arrange for this symbol to be exactly at
|
|
// address 0x10000.
|
|
assert(reinterpret_cast<uintptr_t>(justsyms_string) == 0x10000);
|
|
|
|
// However, since the file was linked with --just-symbols, we should
|
|
// not be able to actually access the symbol.
|
|
signal(SIGSEGV, handle_sigsegv);
|
|
char c = justsyms_string[0];
|
|
exit(c == '\0' ? 1 : c);
|
|
}
|