1/* Restartable Sequences single-threaded tests.
2 Copyright (C) 2021-2024 Free Software Foundation, Inc.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18/* These tests validate that rseq is registered from main in an executable
19 not linked against libpthread. */
20
21#include <support/check.h>
22#include <stdio.h>
23#include <sys/rseq.h>
24#include <unistd.h>
25
26#ifdef RSEQ_SIG
27# include <errno.h>
28# include <error.h>
29# include <stdlib.h>
30# include <string.h>
31# include <syscall.h>
32# include <sys/auxv.h>
33# include <thread_pointer.h>
34# include <tls.h>
35# include "tst-rseq.h"
36
37static void
38do_rseq_main_test (void)
39{
40 struct pthread *pd = THREAD_SELF;
41
42 TEST_VERIFY_EXIT (rseq_thread_registered ());
43 TEST_COMPARE (__rseq_flags, 0);
44 TEST_VERIFY ((char *) __thread_pointer () + __rseq_offset
45 == (char *) &pd->rseq_area);
46 /* The current implementation only supports the initial size. */
47 TEST_COMPARE (__rseq_size, 20);
48}
49
50static void
51do_rseq_test (void)
52{
53 if (!rseq_available ())
54 {
55 FAIL_UNSUPPORTED ("kernel does not support rseq, skipping test");
56 }
57 printf (format: "info: __rseq_size: %u\n", __rseq_size);
58 printf (format: "info: __rseq_offset: %td\n", __rseq_offset);
59 printf (format: "info: __rseq_flags: %u\n", __rseq_flags);
60 printf (format: "info: getauxval (AT_RSEQ_FEATURE_SIZE): %ld\n",
61 getauxval (AT_RSEQ_FEATURE_SIZE));
62 printf (format: "info: getauxval (AT_RSEQ_ALIGN): %ld\n", getauxval (AT_RSEQ_ALIGN));
63 do_rseq_main_test ();
64}
65#else /* RSEQ_SIG */
66static void
67do_rseq_test (void)
68{
69 FAIL_UNSUPPORTED ("glibc does not define RSEQ_SIG, skipping test");
70}
71#endif /* RSEQ_SIG */
72
73static int
74do_test (void)
75{
76 do_rseq_test ();
77 return 0;
78}
79
80#include <support/test-driver.c>
81

source code of glibc/sysdeps/unix/sysv/linux/tst-rseq.c