1 // protected_1.cc -- a test case for gold 2 3 // Copyright (C) 2008-2016 Free Software Foundation, Inc. 4 // Written by Ian Lance Taylor <iant (at) google.com>. 5 6 // This file is part of gold. 7 8 // This program is free software; you can redistribute it and/or modify 9 // it under the terms of the GNU General Public License as published by 10 // the Free Software Foundation; either version 3 of the License, or 11 // (at your option) any later version. 12 13 // This program is distributed in the hope that it will be useful, 14 // but WITHOUT ANY WARRANTY; without even the implied warranty of 15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 // GNU General Public License for more details. 17 18 // You should have received a copy of the GNU General Public License 19 // along with this program; if not, write to the Free Software 20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21 // MA 02110-1301, USA. 22 23 // The function f1 is protected, which means that other callers in the 24 // same shared library will call this version. 25 26 int 27 f1() __attribute__ ((__visibility__ ("protected"))); 28 29 int 30 f1() 31 { 32 return 1; 33 } 34 35 // The function f2 is used to test that the executable can see the 36 // same function address for a protected function in the executable 37 // and in the shared library. We can't use the visibility attribute 38 // here, becaues that may cause gcc to generate a PC relative reloc; 39 // we need it to get the value from the GOT. I'm not sure this is 40 // really useful, given that it doesn't work with the visibility 41 // attribute. This test exists here mainly because the glibc 42 // testsuite has the same test, and we want to make sure that gold 43 // passes the glibc testsuite. 44 45 extern "C" int f2(); 46 asm(".protected f2"); 47 48 extern "C" int 49 f2() 50 { 51 return 2; 52 } 53 54 int 55 (*get_f2_addr())() 56 { 57 return f2; 58 } 59
