y2038: Convert aio_suspend to support 64 bit time

The aio_suspend function has been converted to support 64 bit time.

This change uses (in aio_misc.h):
- __futex_abstimed_wait64 (instead of futex_reltimed_wait)
- __futex_abstimed_wait_cancellable64
	(instead of futex_reltimed_wait_cancellable)
    from ./sysdeps/nptl/futex-helpers.h

The aio_suspend() accepts relative timeout, which then is converted to
absolute one.

The i686-gnu port (HURD) do not define DONT_NEED_AIO_MISC_COND and as it
doesn't (yet) support 64 bit time it uses not converted
pthread_cond_timedwait().

The __aio_suspend() is supposed to be run on ports with __TIMESIZE !=64 and
__WORDSIZE==32. It internally utilizes __aio_suspend_time64() and hence the
conversion from 32 bit struct timespec to 64 bit one is required.

For ports supporting 64 bit time the __aio_suspend_time64() will be used
either via alias (to __aio_suspend when __TIMESIZE==64) or redirection
(when -D_TIME_BITS=64 is passed).

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/nptl/Versions b/nptl/Versions
index aed118e717..02650fe91c 100644
--- a/nptl/Versions
+++ b/nptl/Versions
@@ -302,6 +302,7 @@ libpthread {
     __pthread_clock_gettime; __pthread_clock_settime;
     __pthread_unwind; __pthread_get_minstack;
     __pthread_barrier_init; __pthread_barrier_wait;
+    __futex_abstimed_wait64; __futex_abstimed_wait_cancelable64;
     __shm_directory;
     __libpthread_freeres;
   }