0897ed3bdb
(Scan::possible_function_pointer_reloc): New function. (Scan::local_reloc_may_be_function_pointer): Change to call possible_function_pointer_reloc. (Scan::global_reloc_may_be_function_pointer): Ditto. * icf.h (Icf::check_section_for_function_pointers): Change to reject relocations in ".data.rel.ro._ZTV" section. * testsuite/icf_safe_so_test.sh: Change to pass i386. * testsuite/icf_safe_so_test.cc: Ditto. * testsuite/icf_safe_test.cc: Ditto. * testsuite/icf_safe_test.sh: Ditto.
75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
// icf_safe_so_test.cc -- a test case for gold
|
|
|
|
// Copyright 2010 Free Software Foundation, Inc.
|
|
// Written by Sriraman Tallam <tmsriram@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 verify if identical code folding
|
|
// in safe mode correctly folds functions in a shared object. The
|
|
// foo_* functions below should not be folded. For x86-64,
|
|
// foo_glob and bar_glob should be folded as their function pointers
|
|
// are addresses of PLT entries in shared objects. For 32-bit X86,
|
|
// the hidden protected and internal symbols can be folded.
|
|
|
|
int __attribute__ ((visibility ("protected")))
|
|
foo_prot()
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int __attribute__ ((visibility ("hidden")))
|
|
foo_hidden()
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int __attribute__ ((visibility ("internal")))
|
|
foo_internal()
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
foo_static()
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int foo_glob()
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
int bar_glob()
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
int (*p)() = foo_glob;
|
|
(void)p;
|
|
foo_static();
|
|
foo_prot();
|
|
foo_hidden();
|
|
foo_internal();
|
|
return 0;
|
|
}
|
|
|