1 // script_test_2.cc -- linker script test 2 for gold -*- C++ -*- 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 // 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) == 0x20000010); 46 47 // We should see the string from script_test_2b.o next. The 48 // subalign should move it up to 0x20000020. 49 for (int i = 0; i < 16; ++i) 50 assert(start_test_area_1[i] == 0); 51 assert(strcmp(start_test_area_1 + 16, "test bb") == 0); 52 53 // Next the string from script_test_2a.o, after the subalign. 54 for (int i = 16 + 7; i < 48; ++i) 55 assert(start_test_area_1[i] == 0); 56 assert(strcmp(start_test_area_1 + 48, "test aa") == 0); 57 58 // Move four bytes forward to start_data. 59 assert(reinterpret_cast<uintptr_t>(start_test_area_1 + 48 + 8 + 4) 60 == reinterpret_cast<uintptr_t>(start_data)); 61 assert(memcmp(start_data, "\1\2\0\4\0\0\0\010\0\0\0\0\0\0\0", 15) == 0 62 || memcmp(start_data, "\1\0\2\0\0\0\4\0\0\0\0\0\0\0\010", 15) == 0); 63 assert(end_data == start_data + 15); 64 65 // Check that FILL works as expected. 66 assert(start_fill == end_data); 67 assert(memcmp(start_fill, "\x12\x34\x56\x78\x12\x34\x56\0", 8) == 0); 68 assert(end_fill == start_fill + 8); 69 70 assert(end_test_area == end_fill); 71 72 assert(test_addr == start_test_area_1); 73 assert(test_addr_alias == test_addr); 74 } 75
