nptl: Move core condition variable functions into libc

Onl pthread_cond_clockwait did not have a forwarder, so it needs
a new symbol version.

Some complications arise due to the need to supply hidden aliases,
GLIBC_PRIVATE exports (for the C11 condition variable implementation
that still remains in libpthread) and 64-bit time_t stubs.

pthread_cond_broadcast, pthread_cond_signal,  pthread_cond_timedwait,
pthread_cond_wait, pthread_cond_clockwait have been moved using
scripts/move-symbol-to-libc.py.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

75 files changed, 166 insertions, 342 deletions

diff --git a/nptl/Makefile b/nptl/Makefile
index 9f739e25d5..6b81fe6c58 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -47,8 +47,12 @@ routines = \
   lowlevellock \
   nptl_deallocate_tsd \
   nptl_nthreads \
+  old_pthread_cond_broadcast \
   old_pthread_cond_destroy \
   old_pthread_cond_init \
+  old_pthread_cond_signal \
+  old_pthread_cond_timedwait \
+  old_pthread_cond_wait \
   pthread_atfork \
   pthread_attr_copy \
   pthread_attr_destroy \
@@ -69,8 +73,11 @@ routines = \
   pthread_attr_setsigmask \
   pthread_attr_setsigmask_internal \
   pthread_cleanup_upto \
+  pthread_cond_broadcast \
   pthread_cond_destroy \
   pthread_cond_init \
+  pthread_cond_signal \
+  pthread_cond_wait \
   pthread_condattr_destroy \
   pthread_condattr_init \
   pthread_equal \
@@ -83,6 +90,7 @@ routines = \
   pthread_key_delete \
   pthread_keys \
   pthread_kill \
+  pthread_mutex_cond_lock \
   pthread_mutex_conf \
   pthread_mutex_consistent \
   pthread_mutex_destroy \
@@ -118,10 +126,6 @@ libpthread-routines = \
   nptl-init \
   nptlfreeres \
   old_pthread_atfork \
-  old_pthread_cond_broadcast \
-  old_pthread_cond_signal \
-  old_pthread_cond_timedwait \
-  old_pthread_cond_wait \
   pt-interp \
   pthread_attr_getaffinity \
   pthread_attr_getguardsize \
@@ -141,9 +145,6 @@ libpthread-routines = \
   pthread_barrierattr_setpshared \
   pthread_cancel \
   pthread_clockjoin \
-  pthread_cond_broadcast \
-  pthread_cond_signal \
-  pthread_cond_wait \
   pthread_condattr_getclock \
   pthread_condattr_getpshared \
   pthread_condattr_setclock \
@@ -157,7 +158,6 @@ libpthread-routines = \
   pthread_join \
   pthread_join_common \
   pthread_kill_other_threads \
-  pthread_mutex_cond_lock \
   pthread_mutex_getprioceiling \
   pthread_mutex_setprioceiling \
   pthread_mutex_timedlock \
diff --git a/nptl/Versions b/nptl/Versions
index 7672831e3a..2c2c5c2078 100644
--- a/nptl/Versions
+++ b/nptl/Versions
@@ -96,6 +96,9 @@ libc {
     thrd_sleep;
     thrd_yield;
   }
+  GLIBC_2.30 {
+    pthread_cond_clockwait;
+  }
   GLIBC_2.32 {
     pthread_attr_getsigmask_np;
     pthread_attr_setaffinity_np;
@@ -114,6 +117,7 @@ libc {
     __pthread_mutex_unlock;
     __pthread_once;
     __pthread_setspecific;
+    pthread_cond_clockwait;
     pthread_getspecific;
     pthread_key_create;
     pthread_key_delete;
@@ -151,8 +155,12 @@ libc {
     __pthread_cleanup_pop;
     __pthread_cleanup_push;
     __pthread_cleanup_upto;
+    __pthread_cond_broadcast; # Used by the C11 threads.
     __pthread_cond_destroy; # Used by the C11 threads.
     __pthread_cond_init; # Used by the C11 threads.
+    __pthread_cond_signal; # Used by the C11 threads.
+    __pthread_cond_timedwait; # Used by the C11 threads.
+    __pthread_cond_wait; # Used by the C11 threads.
     __pthread_current_priority;
     __pthread_exit;
     __pthread_force_elision;
@@ -187,10 +195,6 @@ libpthread {
     funlockfile;
     pthread_atfork;
     pthread_cancel;
-    pthread_cond_broadcast;</