1 /* script_test_12a.c -- a test case for gold
2
3 Copyright (C) 2015-2016 Free Software Foundation, Inc.
4 Written by Cary Coutant <ccoutant@gmail.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 This tests linker script behavior, that gold distinguishes correctly
24 between
25 *(.x1) *(.x2) *(.x3)
26 and
27 *(.x1 .x2 .x3)
28 in an input section spec. In the first case, the output section
29 should contain all .x1 sections, followed by all .x2 sections,
30 then all .x3 sections; i.e.:
31 script_test_12a.o(.x1)
32 script_test_12b.o(.x1)
33 script_test_12a.o(.x2)
34 script_test_12b.o(.x2)
35 script_test_12a.o(.x3)
36 script_test_12b.o(.x3)
37
38 In the second case, the output section should interleave the
39 .x1, .x2, and .x3 sections in the order seen; i.e.:
40 script_test_12a.o(.x1)
41 script_test_12a.o(.x2)
42 script_test_12a.o(.x3)
43 script_test_12b.o(.x1)
44 script_test_12b.o(.x2)
45 script_test_12b.o(.x3)
46
47 The linker scripts set the absolute symbol INTERLEAVED, which we
48 test here to determine which ordering to expect. The scripts also
49 define the symbols test_array_start and test_array_end.
50 */
51
52 extern int test_array_start;
53 extern int test_array_end;
54 extern char interleaved __attribute__((__aligned__(1)));
55
56 int
main(void)57 main(void)
58 {
59 int last = 0;
60 int *p;
61 long should_be_interleaved = (long)&interleaved;
62 int mask = (should_be_interleaved == 1 ? 0x7f : 0xff);
63 for (p = &test_array_start; p < &test_array_end; ++p)
64 {
65 int next = *p & mask;
66 if (next <= last)
67 return 1;
68 last = next;
69 }
70 return 0;
71 }
72
73 int a1[] __attribute((section(".x1"))) = { 0x01, 0x02, 0x03, 0x04 };
74 int a2[] __attribute((section(".x2"))) = { 0x11, 0x12, 0x13, 0x14};
75 int a3[] __attribute((section(".x3"))) = { 0x21, 0x22, 0x23, 0x24 };
76 int a4[] __attribute((section(".x4"))) = { 0xff, 0xff, 0xff, 0xff };
77