| 1 | // script_test_2.cc -- linker script test 2 for gold -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2008-2020 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 | // A test of some uses of the SECTIONS clause. Look at |
| 24 | // script_test_2.t to make sense of this test. |
| 25 | |
| 26 | #include <cassert> |
| 27 | #include <cstddef> |
| 28 | #include <cstring> |
| 29 | #include <stdint.h> |
| 30 | |
| 31 | extern char start_test_area[] __attribute__((__aligned__(1))); |
| 32 | extern char start_test_area_1[] __attribute__((__aligned__(1))); |
| 33 | extern char start_data[] __attribute__((__aligned__(1))); |
| 34 | extern char end_data[] __attribute__((__aligned__(1))); |
| 35 | extern char start_fill[] __attribute__((__aligned__(1))); |
| 36 | extern char end_fill[] __attribute__((__aligned__(1))); |
| 37 | extern char end_test_area[] __attribute__((__aligned__(1))); |
| 38 | extern char test_addr[] __attribute__((__aligned__(1))); |
| 39 | extern char test_addr_alias[] __attribute__((__aligned__(1))); |
| 40 | |
| 41 | int |
| 42 | main(int, char**) |
| 43 | { |
| 44 | assert(reinterpret_cast<uintptr_t>(start_test_area) == 0x20000001); |
| 45 | assert(reinterpret_cast<uintptr_t>(start_test_area_1) == 0x20000020); |
| 46 | |
| 47 | assert(strcmp(start_test_area_1, "test bb") == 0); |
| 48 | |
| 49 | // Next the string from script_test_2a.o, after the subalign. |
| 50 | for (int i = 7; i < 32; ++i) |
| 51 | assert(start_test_area_1[i] == 0); |
| 52 | assert(strcmp(start_test_area_1 + 32, "test aa") == 0); |
| 53 | |
| 54 | // Skip to start_data at relative offset 60. |
| 55 | for (int i = 32 + 7; i < 60; ++i) |
| 56 | assert(start_test_area_1[i] == 0); |
| 57 | assert(reinterpret_cast<uintptr_t>(start_test_area_1 + 60) |
| 58 | == reinterpret_cast<uintptr_t>(start_data)); |
| 59 | assert(memcmp(start_data, "\1\2\0\4\0\0\0\010\0\0\0\0\0\0\0", 15) == 0 |
| 60 | || memcmp(start_data, "\1\0\2\0\0\0\4\0\0\0\0\0\0\0\010", 15) == 0); |
| 61 | assert(end_data == start_data + 15); |
| 62 | |
| 63 | // Check that FILL works as expected. |
| 64 | assert(start_fill == end_data); |
| 65 | assert(memcmp(start_fill, "\x12\x34\x56\x78\x12\x34\x56\0", 8) == 0); |
| 66 | assert(end_fill == start_fill + 8); |
| 67 | |
| 68 | assert(end_test_area == end_fill); |
| 69 | |
| 70 | assert(test_addr == start_test_area_1); |
| 71 | assert(test_addr_alias == test_addr); |
| 72 | } |