1  /* Restartable Sequences single-threaded tests.
       2     Copyright (C) 2021-2023 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 <thread_pointer.h>
      33  # include <tls.h>
      34  # include "tst-rseq.h"
      35  
      36  static void
      37  do_rseq_main_test (void)
      38  {
      39    struct pthread *pd = THREAD_SELF;
      40  
      41    TEST_VERIFY_EXIT (rseq_thread_registered ());
      42    TEST_COMPARE (__rseq_flags, 0);
      43    TEST_VERIFY ((char *) __thread_pointer () + __rseq_offset
      44                 == (char *) &pd->rseq_area);
      45    TEST_COMPARE (__rseq_size, sizeof (pd->rseq_area));
      46  }
      47  
      48  static void
      49  do_rseq_test (void)
      50  {
      51    if (!rseq_available ())
      52      {
      53        FAIL_UNSUPPORTED ("kernel does not support rseq, skipping test");
      54      }
      55    do_rseq_main_test ();
      56  }
      57  #else /* RSEQ_SIG */
      58  static void
      59  do_rseq_test (void)
      60  {
      61    FAIL_UNSUPPORTED ("glibc does not define RSEQ_SIG, skipping test");
      62  }
      63  #endif /* RSEQ_SIG */
      64  
      65  static int
      66  do_test (void)
      67  {
      68    do_rseq_test ();
      69    return 0;
      70  }
      71  
      72  #include <support/test-driver.c>