| 1 | // protected_1.cc -- a test case for gold |
| 2 | |
| 3 | // Copyright (C) 2008-2014 Free Software Foundation, Inc. |
| 4 | // Written by Ian Lance Taylor <iant@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 | } |