remove PID caching

Follow GNU C Library from c579f48edba88380635ab98cb612030e3ed8691e
and remove the PID caching. These simplifies the architecture specific
assembly code.
The run of the test suite found no regressions, it even solves
some of the test failures for x86/x86_64/sparc.

Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Acked-by: Matthew Fortune <Matthew.Fortune@imgtec.com>
Acked-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>

68 files changed, 130 insertions, 856 deletions

diff --git a/libpthread/nptl/allocatestack.c b/libpthread/nptl/allocatestack.c
index 39ec8577e..ccf34d6f6 100644
--- a/libpthread/nptl/allocatestack.c
+++ b/libpthread/nptl/allocatestack.c
@@ -418,9 +418,6 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
       THREAD_SYSINFO(pd) = THREAD_SELF_SYSINFO;
 #endif
 
-      /* The process ID is also the same as that of the caller.  */
-      pd->pid = THREAD_GETMEM (THREAD_SELF, pid);
-
       /* Allocate the DTV for this thread.  */
       if (_dl_allocate_tls (TLS_TPADJ (pd)) == NULL)
 	{
@@ -556,9 +553,6 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
 	  THREAD_SYSINFO(pd) = THREAD_SELF_SYSINFO;
 #endif
 
-	  /* The process ID is also the same as that of the caller.  */
-	  pd->pid = THREAD_GETMEM (THREAD_SELF, pid);
-
 	  /* Allocate the DTV for this thread.  */
 	  if (_dl_allocate_tls (TLS_TPADJ (pd)) == NULL)
 	    {
@@ -833,9 +827,6 @@ __reclaim_stacks (void)
 	  /* This marks the stack as free.  */
 	  curp->tid = 0;
 
-	  /* The PID field must be initialized for the new process.  */
-	  curp->pid = self->pid;
-
 	  /* Account for the size of the stack.  */
 	  stack_cache_actsize += curp->stackblock_size;
 
@@ -862,13 +853,6 @@ __reclaim_stacks (void)
 	}
     }
 
-  /* Reset the PIDs in any cached stacks.  */
-  list_for_each (runp, &stack_cache)
-    {
-      struct pthread *curp = list_entry (runp, struct pthread, list);
-      curp->pid = self->pid;
-    }
-
   /* Add the stack of all running threads to the cache.  */
   list_splice (&stack_used, &stack_cache);
 
@@ -995,9 +979,9 @@ setxid_signal_thread (struct xid_command *cmdp, struct pthread *t)
     return 0;
 
   int val;
+  pid_t pid = getpid ();
   INTERNAL_SYSCALL_DECL (err);
-  val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
-			  t->tid, SIGSETXID);
+  val = INTERNAL_SYSCALL (tgkill, err, 3, pid, t->tid, SIGSETXID);
 
   /* If this failed, it must have had not started yet or else exited.  */
   if (!INTERNAL_SYSCALL_ERROR_P (val, err))
diff --git a/libpthread/nptl/descr.h b/libpthread/nptl/descr.h
index 3fda681b8..06fdbee4b 100644
--- a/libpthread/nptl/descr.h
+++ b/libpthread/nptl/descr.h
@@ -152,9 +152,6 @@ struct pthread
      therefore stack) used' flag.  */
   pid_t tid;
 
-  /* Process ID - thread group ID in kernel speak.  */
-  pid_t pid;
-
   /* List of robust mutexes the thread is holding.  */
 #ifdef __PTHREAD_MUTEX_HAVE_PREV
   void *robust_prev;
diff --git a/libpthread/nptl/init.c b/libpthread/nptl/init.c
index 0e1c60cda..09220c220 100644
--- a/libpthread/nptl/init.c
+++ b/libpthread/nptl/init.c
@@ -64,24 +64,13 @@ static const char nptl_version[] __attribute_used__ = VERSION;
 static void
 sigcancel_handler (int sig, siginfo_t *si, void *ctx)
 {
-#ifdef __ASSUME_CORRECT_SI_PID
-  /* Determine the process ID.  It might be negative if the thread is
-     in the middle of a fork() call.  */
-  pid_t pid = THREAD_GETMEM (THREAD_SELF, pid);
-  if (__builtin_expect (pid < 0, 0))
-    pid = -pid;
-#endif
 
   /* Safety check.  It would be possible to call this function for
      other signals and send a signal from another process.  This is not
      correct and might even be a security problem.  Try to catch as
      many incorrect invocations as possible.  */
   if (sig != SIGCANCEL
-#ifdef __ASSUME_CORRECT_SI_PID
-      /* Kernels before 2.5.75 stored the thread ID and not the process
-	 ID in si_pid so we skip this test.  */
-      || si->si_pid != pid
-#endif
+      || si->si_pid != getpid()
       || si->si_code != SI_TKILL)
     return;
 
@@ -125,24 +114,13 @@ struct xid_command *__xidcmd attribute_hidden;
 static void
 sighandler_setxid (int sig, siginfo_t *si, void *ctx)
 {
-#ifdef __ASSUME_CORRECT_SI_PID
-  /* Determine the process ID.  It might be negative if the thread is
-     in the middle of a fork() call.  */
-  pid_t pid = THREAD_GETMEM (THREAD_SELF, pid);
-  if (__builtin_expect (pid < 0, 0))
-    pid = -pid;
-#endif
 
   /* Safety check.  It would be possible to call this function for
      other signals and send a signal from another process.  This is not
      correct and might even be a security problem.  Try to catch as
      many incorrect invocations as possible.  */
   if (sig != SIGSETXID
-#ifdef __ASSUME_CORRECT_SI_PID
-      /* Kernels before 2.5.75 stored the thread ID and not the process
-	 ID in si_pid so we skip this test.  */
-      || si->si_pid != pid
-#endif
+      || si->si_pid != getpid()
       || si->si_code != SI_TKILL)
     return;
 
@@ -191,7 +169,7 @@ __pthread_initialize_minimal_internal (void)
   /* Minimal initialization of the thread descriptor.  */
   struct pthread *pd = THREAD_SELF;
   INTERNAL_SYSCALL_DECL (err);
-  pd->pid = pd->tid = INTERNAL_SYSCALL (set_tid_address, err, 1, &pd->tid);
+  pd->tid = INTERNAL_SYSCALL (set_tid_address, err, 1, &pd->tid);
   THREAD_SETMEM (pd, specific[0], &pd->specific_1stblock[0]);
   THREAD_SETMEM (pd, user_stack, true);
   if (LLL_LOCK_INITIALIZER != 0)
diff --git a/libpthread/nptl/pthreadP.h b/libpthread/nptl/pthreadP.h
index 013b91dd4..4707f6548 100644
--- a/libpthread/nptl/pthreadP.h
+++ b/libpthread/nptl/pthreadP.h
@@ -30,6 +30,8 @@
 #include <internaltypes.h>
 #include <atomic.h>
 #include <bits/kernel-features.h>
+#include <errno.h>
+#include <nptl-signals.h>
 
 
 /* Atomic operations on TLS memory.  */
@@ -310,23 +312,6 @@ __do_cancel (void)
 # define LIBC_CANCEL_HANDLED()	/* Nothing.  */
 #endif
 
-/* The signal used for asynchronous cancellation.  */
-#define SIGCANCEL	__SIGRTMIN
-
-
-/* Signal needed for the kernel-supported POSIX timer implementation.
-   We can reuse the cancellation signal since we can distinguish
-   cancellation from timer expirations.  */
-#define SIGTIMER	SIGCANCEL
-
-
-/* Signal used to implement the setuid et.al. functions.  */
-#define SIGSETXID	(__SIGRTMIN + 1)
-
-/* Used to communicate with signal handler.  */
-extern struct xid_command *__xidcmd attribute_hidden;
-
-
 /* Internal prototypes.  */
 
 /* Thread list handling.  */
diff --git a/libpthread/nptl/pthread_cancel.c b/libpthread/nptl/pthread_cancel.c
index ee9a3202f..d3fd140e8 100644
--- a/libpthread/nptl/pthread_cancel.c
+++ b/libpthread/nptl/pthread_cancel.c
@@ -21,6 +21,7 @@
 #include "pthreadP.h"
 #include "atomic.h"
 #include <sysdep.h>
+#include <unistd.h>
 #include <bits/kernel-features.h>
 
 
@@ -74,10 +75,9 @@ pthread_cancel (
 	     the thread is executing fork, it would have to happen in
 	     a signal handler.  But this is no allowed, pthread_cancel
 	     is not guaranteed to be async-safe.  */
+	  pid_t pid = getpid ();
 	  int val;
-	  val = INTERNAL_SYSCALL (tgkill, err, 3,
-				  THREAD_GETMEM (THREAD_SELF, pid), pd->tid,
-				  SIGCANCEL);
+	  val = INTERNAL_SYSCALL (tgkill, err, 3, pid, pd->tid, SIGCANCEL);
 
 	  if (INTERNAL_SYSCALL_ERROR_P (val, err))
 	    result = INTERNAL_SYSCALL_ERRNO (val, err);
diff --git a/libpthread/nptl/sysdeps/alpha/tcb-offsets.sym b/libpthread/nptl/sysdeps/alpha/tcb-offsets.sym
index c21a79104..1005621b3 100644
--- a/libpthread/nptl/sysdeps/alpha/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/alpha/tcb-offsets.sym
@@ -10,5 +10,4 @@
 #define thread_offsetof(mem)	(long)(offsetof(struct pthread, mem) - sizeof(struct pthread))
 
 MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
-PID_OFFSET			thread_offsetof (pid)
 TID_OFFSET			thread_offsetof (tid)
diff --git a/libpthread/nptl/sysdeps/arc/tcb-offsets.sym b/libpthread/nptl/sysdeps/arc/tcb-offsets.sym
index cbf0ae42c..519a62954 100644
--- a/libpthread/nptl/sysdeps/arc/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/arc/tcb-offsets.sym
@@ -2,7 +2,6 @@
 #include <tls.h>
 
 PTHREAD_TID		offsetof (struct pthread, tid)
-PTHREAD_PID		offsetof (struct pthread, pid)
 MULTIPLE_THREADS_OFFSET	offsetof (struct pthread, header.multiple_threads)
 TLS_PRE_TCB_SIZE	sizeof (struct pthread)
 TLS_TCB_SIZE            sizeof(tcbhead_t)
diff --git a/libpthread/nptl/sysdeps/arm/tcb-offsets.sym b/libpthread/nptl/sysdeps/arm/tcb-offsets.sym
index 92cc441d3..bf9c0a1c1 100644
--- a/libpthread/nptl/sysdeps/arm/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/arm/tcb-offsets.sym
@@ -7,5 +7,4 @@
 #define thread_offsetof(mem)	(long)(offsetof(struct pthread, mem) - sizeof(struct pthread))
 
 MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
-PID_OFFSET			thread_offsetof (pid)
 TID_OFFSET			thread_offsetof (tid)
diff --git a/libpthread/nptl/sysdeps/i386/tcb-offsets.sym b/libpthread/nptl/sysdeps/i386/tcb-offsets.sym
index 69f9deb36..990ac7a57 100644
--- a/libpthread/nptl/sysdeps/i386/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/i386/tcb-offsets.sym
@@ -3,7 +3,6 @@
 
 RESULT			offsetof (struct pthread, result)
 TID			offsetof (struct pthread, tid)
-PID			offsetof (struct pthread, pid)
 CANCELHANDLING		offsetof (struct pthread, cancelhandling)
 CLEANUP_JMP_BUF		offsetof (struct pthread, cleanup_jmp_buf)
 MULTIPLE_THREADS_OFFSET	offsetof (tcbhead_t, multiple_threads)
diff --git a/libpthread/nptl/sysdeps/metag/tcb-offsets.sym b/libpthread/nptl/sysdeps/metag/tcb-offsets.sym
index 753b72b2d..852b5cc26 100644
--- a/libpthread/nptl/sysdeps/metag/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/metag/tcb-offsets.sym
@@ -3,7 +3,6 @@
 
 RESULT			offsetof (struct pthread, result)
 TID			offsetof (struct pthread, tid)
-PID			offsetof (struct pthread, pid)
 CANCELHANDLING		offsetof (struct pthread, cancelhandling)
 CLEANUP_JMP_BUF		offsetof (struct pthread, cleanup_jmp_buf)
 MULTIPLE_THREADS_OFFSET	offsetof (struct pthread, header.multiple_threads)
diff --git a/libpthread/nptl/sysdeps/microblaze/tcb-offsets.sym b/libpthread/nptl/sysdeps/microblaze/tcb-offsets.sym
index 18afbee29..614f0dfed 100644
--- a/libpthread/nptl/sysdeps/microblaze/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/microblaze/tcb-offsets.sym
@@ -7,5 +7,4 @@
 #define thread_offsetof(mem)	(long)(offsetof (struct pthread, mem) - sizeof (struct pthread))
 
 MULTIPLE_THREADS_OFFSET	thread_offsetof (header.multiple_threads)
-PID_OFFSET			thread_offsetof (pid)
 TID_OFFSET			thread_offsetof (tid)
diff --git a/libpthread/nptl/sysdeps/mips/tcb-offsets.sym b/libpthread/nptl/sysdeps/mips/tcb-offsets.sym
index e0e71dc43..9ea25b94a 100644
--- a/libpthread/nptl/sysdeps/mips/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/mips/tcb-offsets.sym
@@ -7,5 +7,4 @@
 #define thread_offsetof(mem)	(long)(offsetof(struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
 
 MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
-PID_OFFSET			thread_offsetof (pid)
 TID_OFFSET			thread_offsetof (tid)
diff --git a/libpthread/nptl/sysdeps/nds32/tcb-offsets.sym b/libpthread/nptl/sysdeps/nds32/tcb-offsets.sym
index 3b9e10186..6701626e1 100644
--- a/libpthread/nptl/sysdeps/nds32/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/nds32/tcb-offsets.sym
@@ -7,6 +7,5 @@
 #define thread_offsetof(mem)    (long)(offsetof(struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
 
 MULTIPLE_THREADS_OFFSET         thread_offsetof (header.multiple_threads)
-PID_OFFSET                      thread_offsetof (pid)
 TID_OFFSET                      thread_offsetof (tid)
 
diff --git a/libpthread/nptl/sysdeps/nios2/tcb-offsets.sym b/libpthread/nptl/sysdeps/nios2/tcb-offsets.sym
index d9ae95258..3cd8d984a 100644
--- a/libpthread/nptl/sysdeps/nios2/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/nios2/tcb-offsets.sym
@@ -9,6 +9,5 @@
 # define thread_offsetof(mem)   ((ptrdiff_t) THREAD_SELF + offsetof (struct pthread, mem))
 
 MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
-PID_OFFSET			thread_offsetof (pid)
 TID_OFFSET			thread_offsetof (tid)
 POINTER_GUARD			(offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
diff --git a/libpthread/nptl/sysdeps/powerpc/tcb-offsets.sym b/libpthread/nptl/sysdeps/powerpc/tcb-offsets.sym
index 8ac133dfd..0bd16fb3a 100644
--- a/libpthread/nptl/sysdeps/powerpc/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/powerpc/tcb-offsets.sym
@@ -12,7 +12,6 @@
 #if TLS_MULTIPLE_THREADS_IN_TCB
 MULTIPLE_THREADS_OFFSET		thread_offsetof (header.multiple_threads)
 #endif
-PID				thread_offsetof (pid)
 TID				thread_offsetof (tid)
 POINTER_GUARD			(offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
 #ifndef __ASSUME_PRIVATE_FUTEX
diff --git a/libpthread/nptl/sysdeps/pthread/createthread.c b/libpthread/nptl/sysdeps/pthread/createthread.c
index ebfee16f9..550bf2cfe 100644
--- a/libpthread/nptl/sysdeps/pthread/createthread.c
+++ b/libpthread/nptl/sysdeps/pthread/createthread.c
@@ -91,6 +91,7 @@ do_clone (struct pthread *pd, const struct pthread_attr *attr,
   if (__builtin_expect (stopped != 0, 0))
     {
       INTERNAL_SYSCALL_DECL (err);
+      pid_t pid = getpid ();
       int res = 0;
 
       /* Set the affinity mask if necessary.  */
@@ -105,9 +106,7 @@ do_clone (struct pthread *pd, const struct pthread_attr *attr,
 		 send it the cancellation signal.  */
 	      INTERNAL_SYSCALL_DECL (err2);
 	    err_out:
-	      (void) INTERNAL_SYSCALL (tgkill, err2, 3,
-				       THREAD_GETMEM (THREAD_SELF, pid),
-				       pd->tid, SIGCANCEL);
+	      (void) INTERNAL_SYSCALL (tgkill, err2, 3, pid, pd->tid, SIGCANCEL);
 
 	      return (INTERNAL_SYSCALL_ERROR_P (res, err)
 		      ? INTERNAL_SYSCALL_ERRNO (res, err)
diff --git a/libpthread/nptl/sysdeps/sh/tcb-offsets.sym b/libpthread/nptl/sysdeps/sh/tcb-offsets.sym
index 753b72b2d..852b5cc26 100644
--- a/libpthread/nptl/sysdeps/sh/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/sh/tcb-offsets.sym
@@ -3,7 +3,6 @@
 
 RESULT			offsetof (struct pthread, result)
 TID			offsetof (struct pthread, tid)
-PID			offsetof (struct pthread, pid)
 CANCELHANDLING		offsetof (struct pthread, cancelhandling)
 CLEANUP_JMP_BUF		offsetof (struct pthread, cleanup_jmp_buf)
 MULTIPLE_THREADS_OFFSET	offsetof (struct pthread, header.multiple_threads)
diff --git a/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym b/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym
index 923af8a5b..f75d02065 100644
--- a/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/sparc/tcb-offsets.sym
@@ -3,5 +3,4 @@
 
 MULTIPLE_THREADS_OFFSET		offsetof (tcbhead_t, multiple_threads)
 POINTER_GUARD			offsetof (tcbhead_t, pointer_guard)
-PID				offsetof (struct pthread, pid)
 TID				offsetof (struct pthread, tid)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/clone.S
deleted file mode 100644
index eea1cbeed..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/clone.S
+++ /dev/null
@@ -1,2 +0,0 @@
-#define RESET_PID
-#include <sysdeps/unix/sysv/linux/alpha/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/vfork.S
deleted file mode 100644
index 664cac494..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/alpha/vfork.S
+++ /dev/null
@@ -1,45 +0,0 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#include <tcb-offsets.h>
-
-#undef PSEUDO_PREPARE_ARGS
-#define PSEUDO_PREPARE_ARGS						\
-	/* Load the current cached pid value across the vfork.  */	\
-	rduniq;								\
-	ldl	a2, PID_OFFSET(v0);					\
-	mov	v0, a1;							\
-	/* If the cached value is initialized (nonzero), then write	\
-	   back its negation, or INT_MIN, to indicate that the pid	\
-	   value is uninitialized in the the child, and in the window	\
-	   between here and the point at which we restore the value.  */ \
-	ldah	t0, -0x8000;						\
-	negl	a2, t1;							\
-	cmovne	a2, t1, t0;						\
-	stl	t0, PID_OFFSET(v0);
-
-PSEUDO (__vfork, vfork, 0)
-
-	/* If we're back in the parent, restore the saved pid.  */
-	beq	v0, 1f
-	stl	a2, PID_OFFSET(a1)
-1:	ret
-
-PSEUDO_END (__vfork)
-libc_hidden_def (__vfork)
-weak_alias (__vfork, vfork)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
index fa5d530d4..64f3a4f7b 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
@@ -9,6 +9,3 @@ libpthread_linux_arch_SSRC =
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
-libc_linux_arch_SSRC-OMIT = waitpid.S
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S
deleted file mode 100644
index 5fd1de3c2..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
- *
- * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
- */
-
-#define RESET_PID
-#include <tls.h>
-#include <tcb-offsets.h>
-#include "../../../../../../../libc/sysdeps/linux/arc/clone.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S
deleted file mode 100644
index d29e05a8a..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
- * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
- *
- * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
- */
-
-#define SAVE_PID
-#define RESTORE_PID
-#include <tls.h>
-#include <tcb-offsets.h>
-#include "../../../../../../../libc/sysdeps/linux/arc/vfork.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch
index 49d0684ee..55afe20af 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/Makefile.arch
@@ -9,11 +9,3 @@ libpthread_linux_arch_SSRC =
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
-libc_linux_arch_SSRC-OMIT = waitpid.S
-
-# We always compile it in arm mode because of SAVE_PID macro
-# This macro should be alternatively implemented in THUMB
-# assembly.
-ASFLAGS-vfork.S = -marm
-CFLAGS-OMIT-vfork.S = -mthumb
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/clone.S
deleted file mode 100644
index 23227eb24..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/clone.S
+++ /dev/null
@@ -1,3 +0,0 @@
-#define RESET_PID
-#include <tcb-offsets.h>
-#include "../../../../../../../libc/sysdeps/linux/arm/clone.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/vfork.S
deleted file mode 100644
index b9e8cf846..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/vfork.S
+++ /dev/null
@@ -1,38 +0,0 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <tcb-offsets.h>
-
-/* Save the PID value.  */
-#define SAVE_PID \
-	str	lr, [sp, #-4]!;		/* Save LR.  */			\
-	mov	r0, #0xffff0fff;	/* Point to the high page.  */	\
-	mov	lr, pc;			/* Save our return address.  */	\
-	sub	pc, r0, #31;		/* Jump to the TLS entry.  */	\
-	ldr	lr, [sp], #4;		/* Restore LR.  */		\
-	mov	r2, r0;			/* Save the TLS addr in r2.  */	\
-	ldr	r3, [r2, #PID_OFFSET];	/* Load the saved PID.  */	\
-	rsbs	r0, r3, #0;		/* Negate it.  */		\
-	moveq	r0, #0x80000000;	/* Use 0x80000000 if it was 0.  */ \
-	str	r0, [r2, #PID_OFFSET]	/* Store the temporary PID.  */
-
-/* Restore the old PID value in the parent.  */
-#define RESTORE_PID \
-	cmp	r0, #0;			/* If we are the parent... */	\
-	strne	r3, [r2, #PID_OFFSET]	/* ... restore the saved PID.  */
-
-#include "../../../../../../../libc/sysdeps/linux/arm/vfork.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c
index af4041031..49806dab9 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/fork.c
@@ -135,12 +135,6 @@ fork (void)
   pid_t ppid = THREAD_GETMEM (THREAD_SELF, tid);
 #endif
 
-  /* We need to prevent the getpid() code to update the PID field so
-     that, if a signal arrives in the child very early and the signal
-     handler uses getpid(), the value returned is correct.  */
-  pid_t parentpid = THREAD_GETMEM (THREAD_SELF, pid);
-  THREAD_SETMEM (THREAD_SELF, pid, -parentpid);
-
 #ifdef ARCH_FORK
   pid = ARCH_FORK ();
 #else
@@ -158,9 +152,6 @@ fork (void)
       if (__fork_generation_pointer != NULL)
 	*__fork_generation_pointer += 4;
 
-      /* Adjust the PID field for the new process.  */
-      THREAD_SETMEM (self, pid, THREAD_GETMEM (self, tid));
-
 #if HP_TIMING_AVAIL
       /* The CPU clock of the thread and process have to be set to zero.  */
       hp_timing_t now;
@@ -206,9 +197,6 @@ fork (void)
     {
       assert (THREAD_GETMEM (THREAD_SELF, tid) == ppid);
 
-      /* Restore the PID value.  */
-      THREAD_SETMEM (THREAD_SELF, pid, parentpid);
-
       /* We execute this even if the 'fork' call failed.  */
       __UCLIBC_IO_MUTEX_UNLOCK_CANCEL_UNSAFE(_stdio_openlist_add_lock);
 
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/getpid.c b/libpthread/nptl/sysdeps/unix/sysv/linux/getpid.c
index 24abccc93..03b1031a4 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/getpid.c
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/getpid.c
@@ -25,41 +25,11 @@
 # define __NR_getpid __NR_getxpid
 #endif
 
-#ifndef NOT_IN_libc
-static inline __attribute__((always_inline)) pid_t really_getpid (pid_t oldval);
-
-static inline __attribute__((always_inline)) pid_t
-really_getpid (pid_t oldval)
-{
-  if (__builtin_expect (oldval == 0, 1))
-    {
-      pid_t selftid = THREAD_GETMEM (THREAD_SELF, tid);
-      if (__builtin_expect (selftid != 0, 1))
-	return selftid;
-    }
-
-  INTERNAL_SYSCALL_DECL (err);
-  pid_t result = INTERNAL_SYSCALL (getpid, err, 0);
-
-  /* We do not set the PID field in the TID here since we might be
-     called from a signal handler while the thread executes fork.  */
-  if (oldval == 0)
-    THREAD_SETMEM (THREAD_SELF, tid, result);
-  return result;
-}
-#endif
-
 static pid_t
 __getpid (void)
 {
-#ifdef NOT_IN_libc
   INTERNAL_SYSCALL_DECL (err);
   pid_t result = INTERNAL_SYSCALL (getpid, err, 0);
-#else
-  pid_t result = THREAD_GETMEM (THREAD_SELF, pid);
-  if (__builtin_expect (result <= 0, 0))
-    result = really_getpid (result);
-#endif
   return result;
 }
 weak_alias(__getpid, getpid)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/Makefile.arch
index be07d9c85..ee38a6988 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/Makefile.arch
@@ -5,11 +5,9 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-libpthread_linux_arch_SSRC = clone.S pthread_spin_unlock.S pthread_once.S
+libpthread_linux_arch_SSRC = pthread_spin_unlock.S pthread_once.S
 libpthread_linux_arch_CSRC = pthread_spin_init.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
 
 ASFLAGS += -DUSE___THREAD
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/clone.S
deleted file mode 100644
index 9c7c46467..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/clone.S
+++ /dev/null
@@ -1,2 +0,0 @@
-#define RESET_PID
-#include <libc/sysdeps/linux/i386/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/vfork.S
deleted file mode 100644
index 074f0f046..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/vfork.S
+++ /dev/null
@@ -1,37 +0,0 @@
-/* Copyright (C) 1999,2002,2004,2006 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <tcb-offsets.h>
-
-/* Save the PID value.  */
-#define SAVE_PID \
-	movl	%gs:PID, %edx; 						      \
-	movl	%edx, %eax;						      \
-	negl	%eax;							      \
-	jne	1f;							      \
-	movl	$0x80000000, %eax;					      \
-1:	movl	%eax, %gs:PID
-
-/* Restore the old PID value in the parent.  */
-#define RESTORE_PID \
-	testl	%eax, %eax;						      \
-	je	1f;							      \
-	movl	%edx, %gs:PID;						      \
-1:
-
-
-#include <libc/sysdeps/linux/i386/vfork.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch
index 0f4d8d327..4c85f0abc 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/Makefile.arch
@@ -9,8 +9,5 @@ libpthread_linux_arch_SSRC =
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
-libc_linux_arch_SSRC-OMIT = waitpid.S
 
 CFLAGS += $(SSP_ALL_CFLAGS)
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/clone.S
deleted file mode 100644
index f5c5c7c5d..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/clone.S
+++ /dev/null
@@ -1,9 +0,0 @@
-/*
- * Copyright (C) 2013 Imagination Technologies Ltd.
- *
- * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
- */
-
-#define RESET_PID
-#include <tcb-offsets.h>
-#include "../../../../../../../libc/sysdeps/linux/metag/clone.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/metag/vfork.S
deleted file mode 100644
index 7b369b1b4..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/metag/vfork.S
+++ /dev/null
@@ -1,55 +0,0 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If
-   not, see <http://www.gnu.org/licenses/>.  */
-
-#include <tcb-offsets.h>
-#include <asm/unistd.h>
-
-#ifdef __PIC__
-#define __VFORK_METAG_LOAD_TP ___metag_load_tp@PLT
-#else
-#define __VFORK_METAG_LOAD_TP ___metag_load_tp
-#endif
-
-/* Save the PID value.  */
-#define SAVE_PID \
-	SETL	[A0StP++], D0FrT, D1RtP; \
-	CALLR	D1RtP, __VFORK_METAG_LOAD_TP; \
-	SUB	D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \
-	GETD	D0FrT, [D0Re0 + #PID]; \
-	NEGS	D0FrT, D0FrT; \
-	BNZ	1f; \
-	MOVT	D0FrT, #0x8000; \
-1:	SETD	[D0Re0 + #PID], D0FrT; \
-	GETL	D0FrT, D1RtP, [--A0StP];
-
-#define RESTORE_PID \
-	CMP 	D0Re0, #0; \
-	BEQ	1f; \
-	MSETL	[A0StP++], D0Re0, D0FrT; \
-	CALLR	D1RtP, __VFORK_METAG_LOAD_TP; \
-	SUB	D0Re0, D0Re0, #TLS_PRE_TCB_SIZE; \
-	GETD	D0FrT, [D0Re0 + #PID]; \
-	NEG	D0FrT, D0FrT; \
-	MOVT	D1Re0, #0x8000; \
-	CMP 	D0FrT, D1Re0; \
-	XOREQ	D0FrT, D0FrT, D0FrT; \
-	SETD	[D0Re0 + #PID], D0FrT; \
-	GETL	D0FrT, D1RtP, [--A0StP]; \
-	GETL	D0Re0, D1Re0, [--A0StP]; \
-1:
-
-#include <../../../../../../../libc/sysdeps/linux/metag/vfork.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile.arch
index 77707a085..44a005306 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/Makefile.arch
@@ -5,4 +5,3 @@ libpthread_linux_arch_SSRC =
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/clone.S
deleted file mode 100644
index faa78d936..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/clone.S
+++ /dev/null
@@ -1,4 +0,0 @@
-#define RESET_PID
-#include <tls.h>
-#include <tcb-offsets.h>
-#include "../../../../../../../libc/sysdeps/linux/microblaze/clone.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/vfork.S
deleted file mode 100644
index 433671717..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/microblaze/vfork.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#define SAVE_PID
-#define RESTORE_PID
-#include <tls.h>
-#include <tcb-offsets.h>
-#include <libc/sysdeps/linux/microblaze/vfork.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/Makefile.arch
index 565efd4a3..402c5ffaf 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/Makefile.arch
@@ -5,13 +5,8 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-libpthread_linux_arch_SSRC = clone.S
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
-ifneq ($(CONFIG_MIPS_O32_ABI),y)
-libc_linux_arch_SSRC-OMIT = waitpid.S
-endif
-ASFLAGS += -DUSE___THREAD
 
+ASFLAGS += -DUSE___THREAD
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/clone.S
deleted file mode 100644
index 858877f07..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/clone.S
+++ /dev/null
@@ -1,2 +0,0 @@
-#define RESET_PID
-#include <libc/sysdeps/linux/mips/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/pt-clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/pt-clone.S
deleted file mode 100644
index add405523..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/pt-clone.S
+++ /dev/null
@@ -1,2 +0,0 @@
-#define RESET_PID
-#include <../../../../../../../libc/sysdeps/linux/mips/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/mips/vfork.S
deleted file mode 100644
index a23d99cfa..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/mips/vfork.S
+++ /dev/null
@@ -1,42 +0,0 @@
-/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <features.h>
-#include <tls.h>
-
-/* Save the PID value.  */
-#define SAVE_PID \
-	READ_THREAD_POINTER(v1);	/* Get the thread pointer.  */	\
-	lw	a2, PID_OFFSET(v1);	/* Load the saved PID.  */	\
-	subu	a2, $0, a2;		/* Negate it.  */		\
-	bnez	a2, 1f;			/* If it was zero... */		\
-	lui	a2, 0x8000;		/* use 0x80000000 instead.  */	\
-1:	sw	a2, PID_OFFSET(v1);	/* Store the temporary PID.  */
-
-/* Restore the old PID value in the parent.  */
-#define RESTORE_PID \
-	beqz	v0, 1f;			/* If we are the parent... */	\
-	READ_THREAD_POINTER(v1);	/* Get the thread pointer.  */	\
-	lw	a2, PID_OFFSET(v1);	/* Load the saved PID.  */	\
-	subu	a2, $0, a2;		/* Re-negate it.  */		\
-	lui	a0, 0x8000;		/* Load 0x80000000... */	\
-	bne	a2, a0, 2f;		/* ... compare against it... */	\
-	li	a2, 0;			/* ... use 0 instead.  */	\
-2:	sw	a2, PID_OFFSET(v1);	/* Restore the PID.  */		\
-1:
-
-#include <../../../../../../../libc/sysdeps/linux/mips/vfork.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/Makefile.arch
index 3b8935ce5..94aa25ffb 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/Makefile.arch
@@ -5,8 +5,5 @@ libpthread_linux_arch_SSRC =
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
-libc_linux_arch_SSRC-OMIT = waitpid.S
 
 CFLAGS += $(SSP_ALL_CFLAGS)
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/clone.S
deleted file mode 100644
index 94b39fcf9..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/clone.S
+++ /dev/null
@@ -1,4 +0,0 @@
-/* We want an #include_next, but we are the main source file.
-   So, #include ourselves and in that incarnation we can use #include_next.  */
-# define RESET_PID
-# include <libc/sysdeps/linux/nds32/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/vfork.S
deleted file mode 100644
index f11f76ae1..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/nds32/vfork.S
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (C) 2016-2017 Andes Technology, Inc.
- * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
- */
-
-/* Copyright (C) 2013 Free Software Foundation, Inc.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <tls.h>
-
-/* Save the PID value.  */
-#define SAVE_PID \
-	lwi  	$r1, [$r25 + PID_OFFSET];/* Get the thread pointer.  */	\
-	subri	$r1, $r1, 0x0;		 /* Negate it.  */		\
-	bnez	$r1, 1f;		 /* If it was zero... */		\
-	sethi	$r1, 0x80000;		 /* use 0x80000000 instead.  */	\
-1:	swi	$r1, [$r25 + PID_OFFSET];/* Store the temporary PID.  */
-
-/* Restore the old PID value in the parent.  */
-#define RESTORE_PID \
-	beqz	$r0, 1f;		/* If we are the parent... */	\
-	lwi  	$r1, [$r25 + PID_OFFSET];/* Get the thread pointer.  */	\
-	subri	$r1, $r1, 0x0;		/* Re-negate it.  */		\
-	sethi	$r2, 0x80000;		/* Load 0x80000000... */	\
-	bne	$r1, $r2, 2f;		/* ... compare against it... */	\
-	movi	$r1, 0;			/* ... use 0 instead.  */	\
-2:	swi	$r1, [$r25 + PID_OFFSET];/* Restore the PID.  */		\
-1:
-
-#include <../../../../../../../libc/sysdeps/linux/nds32/vfork.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/Makefile.arch
index 26f51fb67..1295c34af 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/Makefile.arch
@@ -5,5 +5,3 @@ libpthread_linux_arch_SSRC =
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
-libc_linux_arch_SSRC-OMIT = waitpid.S
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/clone.S
deleted file mode 100644
index 544974f9f..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/clone.S
+++ /dev/null
@@ -1,3 +0,0 @@
-#define RESET_PID
-#include <tcb-offsets.h>
-#include "../../../../../../../libc/sysdeps/linux/nios2/clone.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/vfork.S
deleted file mode 100644
index 6ee414c20..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/nios2/vfork.S
+++ /dev/null
@@ -1,38 +0,0 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <tcb-offsets.h>
-
-/* Save the PID value.  */
-#define SAVE_PID \
-	str	lr, [sp, #-4]!;		/* Save LR.  */			\
-	mov	r0, #0xffff0fff;	/* Point to the high page.  */	\
-	mov	lr, pc;			/* Save our return address.  */	\
-	sub	pc, r0, #31;		/* Jump to the TLS entry.  */	\
-	ldr	lr, [sp], #4;		/* Restore LR.  */		\
-	mov	r2, r0;			/* Save the TLS addr in r2.  */	\
-	ldr	r3, [r2, #PID_OFFSET];	/* Load the saved PID.  */	\
-	rsbs	r0, r3, #0;		/* Negate it.  */		\
-	moveq	r0, #0x80000000;	/* Use 0x80000000 if it was 0.  */ \
-	str	r0, [r2, #PID_OFFSET]	/* Store the temporary PID.  */
-
-/* Restore the old PID value in the parent.  */
-#define RESTORE_PID \
-	cmp	r0, #0;			/* If we are the parent... */	\
-	strne	r3, [r2, #PID_OFFSET]	/* ... restore the saved PID.  */
-
-#include "../../../../../../../libc/sysdeps/linux/nios2/vfork.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/nptl-signals.h b/libpthread/nptl/sysdeps/unix/sysv/linux/nptl-signals.h
new file mode 100644
index 000000000..43aa1a939
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/nptl-signals.h
@@ -0,0 +1,84 @@
+/* Special use of signals in NPTL internals.  Linux version.
+   Copyright (C) 2014-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <signal.h>
+
+/* The signal used for asynchronous cancelation.  */
+#define SIGCANCEL       __SIGRTMIN
+
+
+/* Signal needed for the kernel-supported POSIX timer implementation.
+   We can reuse the cancellation signal since we can distinguish
+   cancellation from timer expirations.  */
+#define SIGTIMER        SIGCANCEL
+
+
+/* Signal used to implement the setuid et.al. functions.  */
+#define SIGSETXID       (__SIGRTMIN + 1)
+
+
+/* Return is sig is used internally.  */
+static inline int
+__nptl_is_internal_signal (int sig)
+{
+  return (sig == SIGCANCEL) || (sig == SIGTIMER) || (sig == SIGSETXID);
+}
+
+/* Remove internal glibc signal from the mask.  */
+static inline void
+__nptl_clear_internal_signals (sigset_t *set)
+{
+  __sigdelset (set, SIGCANCEL);
+  __sigdelset (set, SIGTIMER);
+  __sigdelset (set, SIGSETXID);
+}
+
+#define SIGALL_SET \
+  ((__sigset_t) { .__val = {[0 ...  _SIGSET_NWORDS-1 ] =  -1 } })
+
+/* Block all signals, including internal glibc ones.  */
+static inline int
+__libc_signal_block_all (sigset_t *set)
+{
+  INTERNAL_SYSCALL_DECL (err);
+  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_BLOCK, &SIGALL_SET,
+			   set, _NSIG / 8);
+}
+
+/* Block all application signals (excluding internal glibc ones).  */
+static inline int
+__libc_signal_block_app (sigset_t *set)
+{
+  sigset_t allset = SIGALL_SET;
+  __nptl_clear_internal_signals (&allset);
+  INTERNAL_SYSCALL_DECL (err);
+  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_BLOCK, &allset, set,
+			   _NSIG / 8);
+}
+
+/* Restore current process signal mask.  */
+static inline int
+__libc_signal_restore_set (const sigset_t *set)
+{
+  INTERNAL_SYSCALL_DECL (err);
+  return INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, set, NULL,
+			   _NSIG / 8);
+}
+
+/* Used to communicate with signal handler.  */
+extern struct xid_command *__xidcmd attribute_hidden;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/Makefile.arch
index 2abb1d22a..689e029df 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/Makefile.arch
@@ -9,7 +9,5 @@ libpthread_linux_arch_SSRC =
 libpthread_linux_arch_CSRC = pthread_once.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
 
 ASFLAGS += -DUSE___THREAD
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/clone.S
deleted file mode 100644
index 675a997e9..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/clone.S
+++ /dev/null
@@ -1,9 +0,0 @@
-/* We want an #include_next, but we are the main source file.
-   So, #include ourselves and in that incarnation we can use #include_next.  */
-#ifndef INCLUDED_SELF
-# define INCLUDED_SELF
-# include <clone.S>
-#else
-# define RESET_PID
-# include_next <clone.S>
-#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/vfork.S
deleted file mode 100644
index 28c59fd2e..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/powerpc/vfork.S
+++ /dev/null
@@ -1,57 +0,0 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#define _ERRNO_H	1
-#include <bits/errno.h>
-#include <bits/kernel-features.h>
-#include <tcb-offsets.h>
-
-/* Clone the calling process, but without copying the whole address space.
-   The calling process is suspended until the new process exits or is
-   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
-   and the process ID of the new process to the old process.  */
-
-ENTRY (__vfork)
-	lwz	0,PID(2)
-	cmpwi	0,0,0
-	neg	0,0
-	bne-	0,1f
-	lis	0,0x8000
-1:	stw	0,PID(2)
-
-	DO_CALL (SYS_ify (vfork))
-
-	cmpwi	1,3,0
-	beqlr-	1
-
-	lwz	0,PID(2)
-	/* Cannot use clrlwi. here, because cr0 needs to be preserved
-	   until PSEUDO_RET.  */
-	clrlwi	4,0,1
-	cmpwi	1,4,0
-	beq-	1,1f
-	neg	4,0
-1:	stw	4,PID(2)
-
-	PSEUDO_RET
-
-PSEUDO_END (__vfork)
-libc_hidden_def (__vfork)
-weak_alias (__vfork, vfork)
-libc_hidden_weak(vfork)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_kill.c b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_kill.c
index e27ab5104..1cce9bfc9 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_kill.c
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_kill.c
@@ -57,9 +57,10 @@ __pthread_kill (
      function would have to be called while the thread is executing
      fork, it would have to happen in a signal handler.  But this is
      no allowed, pthread_kill is not guaranteed to be async-safe.  */
+
+  pid_t pid = getpid ();
   int val;
-  val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
-			  tid, signo);
+  val = INTERNAL_SYSCALL (tgkill, err, 3, pid, tid, signo);
 
   return (INTERNAL_SYSCALL_ERROR_P (val, err)
 	  ? INTERNAL_SYSCALL_ERRNO (val, err) : 0);
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c
index 2b7fa1471..0bd3b7983 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c
@@ -53,26 +53,22 @@ pthread_sigqueue (
   if (signo == SIGCANCEL || signo == SIGTIMER || signo == SIGSETXID)
     return EINVAL;
 
+  pid_t pid = getpid ();
+
   /* Set up the siginfo_t structure.  */
   siginfo_t info;
   memset (&info, '\0', sizeof (siginfo_t));
   info.si_signo = signo;
   info.si_code = SI_QUEUE;
-  info.si_pid = THREAD_GETMEM (THREAD_SELF, pid);
+  info.si_pid = pid;
   info.si_uid = getuid ();
   info.si_value = value;
 
   /* We have a special syscall to do the work.  */
   INTERNAL_SYSCALL_DECL (err);
 
-  /* One comment: The PID field in the TCB can temporarily be changed
-     (in fork).  But this must not affect this code here.  Since this
-     function would have to be called while the thread is executing
-     fork, it would have to happen in a signal handler.  But this is
-     no allowed, pthread_sigqueue is not guaranteed to be async-safe.  */
   int val = INTERNAL_SYSCALL (rt_tgsigqueueinfo, err, 4,
-			      THREAD_GETMEM (THREAD_SELF, pid),
-			      tid, signo, &info);
+			      pid, tid, signo, &info);
 
   return (INTERNAL_SYSCALL_ERROR_P (val, err)
 	  ? INTERNAL_SYSCALL_ERRNO (val, err) : 0);
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c b/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c
index 6b159384f..f74cd0be3 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/raise.c
@@ -20,37 +20,32 @@
 #include <limits.h>
 #include <signal.h>
 #include <sysdep.h>
-#include <pthreadP.h>
-
+#include <nptl-signals.h>
 
 int
 raise (int sig)
 {
-  struct pthread *pd = THREAD_SELF;
-  pid_t pid = THREAD_GETMEM (pd, pid);
-  pid_t selftid = THREAD_GETMEM (pd, tid);
-  if (selftid == 0)
-    {
-      /* This system call is not supposed to fail.  */
-#ifdef INTERNAL_SYSCALL
-      INTERNAL_SYSCALL_DECL (err);
-      selftid = INTERNAL_SYSCALL (gettid, err, 0);
-#else
-      selftid = INLINE_SYSCALL (gettid, 0);
-#endif
-      THREAD_SETMEM (pd, tid, selftid);
-
-      /* We do not set the PID field in the TID here since we might be
-	 called from a signal handler while the thread executes fork.  */
-      pid = selftid;
-    }
-  else
-    /* raise is an async-safe function.  It could be called while the
-       fork/vfork function temporarily invalidated the PID field.  Adjust for
-       that.  */
-    if (__builtin_expect (pid <= 0, 0))
-      pid = (pid & INT_MAX) == 0 ? selftid : -pid;
-
-  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
+  /* rt_sigprocmask may fail if:
+
+     1. sigsetsize != sizeof (sigset_t) (EINVAL)
+     2. a failure in copy from/to user space (EFAULT)
+     3. an invalid 'how' operation (EINVAL)
+
+     The first case is already handle in glibc syscall call by using the arch
+     defined _NSIG.  Second case is handled by using a stack allocated mask.
+     The last one should be handled by the block/unblock functions.  */
+
+  sigset_t set;
+  __libc_signal_block_app (&set);
+
+  INTERNAL_SYSCALL_DECL (err);
+  pid_t pid = INTERNAL_SYSCALL (getpid, err, 0);
+  pid_t tid = INTERNAL_SYSCALL (gettid, err, 0);
+
+  int ret = INLINE_SYSCALL (tgkill, 3, pid, tid, sig);
+
+  __libc_signal_restore_set (&set);
+
+  return ret;
 }
 libc_hidden_def (raise)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/Makefile.arch
index c07498f94..e3b2f7c4e 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/Makefile.arch
@@ -13,7 +13,5 @@ libpthread_linux_arch_SSRC = pthread_once.S pthread_rwlock_wrlock.S \
 			sem_post.S sem_timedwait.S sem_trywait.S sem_wait.S
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
 
 ASFLAGS += -DUSE___THREAD
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/clone.S
deleted file mode 100644
index 918d57926..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/clone.S
+++ /dev/null
@@ -1,2 +0,0 @@
-#define RESET_PID
-#include <libc/sysdeps/linux/sh/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S
deleted file mode 100644
index 5ea1bc120..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sh/vfork.S
+++ /dev/null
@@ -1,70 +0,0 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#define _ERRNO_H	1
-#include <bits/errno.h>
-#include <tcb-offsets.h>
-
-/* Clone the calling process, but without copying the whole address space.
-   The calling process is suspended until the new process exits or is
-   replaced by a call to `execve'.  Return -1 for errors, 0 to the new process,
-   and the process ID of the new process to the old process.  */
-
-ENTRY (__vfork)
-	/* Save the PID value.  */
-	stc	gbr, r2
-	mov.w	.L2, r0
-	mov.l	@(r0,r2), r4
-	neg	r4, r1
-	tst	r1, r1
-	bf	1f
-	mov	#1, r1
-	rotr	r1
-1:
-	mov.l	r1, @(r0,r2)
-
-	mov.w	.L1, r3
-	trapa	#0x10
-	mov     r0, r1
-
-	/* Restore the old PID value in the parent.  */
-	tst	r0, r0
-	bt.s	2f
-	 stc	gbr, r2
-	mov.w	.L2, r0
-	mov.l	r4, @(r0,r2)
-	mov	r1, r0
-2:
-	mov	#-12, r2
-	shad	r2, r1
-	not	r1, r1			// r1=0 means r0 = -1 to -4095
-	tst	r1, r1			// i.e. error in linux
-	bf	.Lpseudo_end
-	SYSCALL_ERROR_HANDLER
-.Lpseudo_end:
-	rts
-	 nop
-.L1:
-	.word	__NR_vfork
-.L2:
-	.word	PID - TLS_PRE_TCB_SIZE
-	.align	2
-PSEUDO_END (__vfork)
-hidden_def (vfork)
-
-weak_alias (__vfork, vfork)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/Makefile.arch
index f93ad4d8d..5253f1c2f 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/Makefile.arch
@@ -5,12 +5,9 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-libpthread_linux_arch_SSRC = clone.S
 libpthread_linux_arch_CSRC = pthread_once.c lowlevellock.c \
 	pthread_barrier_init.c pthread_barrier_wait.c pthread_barrier_destroy.c
 
 libc_linux_arch_CSRC = fork.c libc-lowlevellock.c
-libc_linux_arch_SSRC = clone.S vfork.S
 
 ASFLAGS += -DUSE___THREAD
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/clone.S
deleted file mode 100644
index a6142aafe..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/clone.S
+++ /dev/null
@@ -1,2 +0,0 @@
-#define RESET_PID
-#include <libc/sysdeps/linux/sparc/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/vfork.S
deleted file mode 100644
index 71f0662a2..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/sparc/vfork.S
+++ /dev/null
@@ -1,48 +0,0 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-#include <tcb-offsets.h>
-
-	.text
-	.globl		__syscall_error
-ENTRY(__vfork)
-	ld	[%g7 + PID], %o5
-	cmp	%o5, 0
-	bne	1f
-	 sub	%g0, %o5, %o4
-	sethi	%hi(0x80000000), %o4
-1:	st	%o4, [%g7 + PID]
-
-	LOADSYSCALL(vfork)
-	ta	0x10
-	bcc	2f
-	 mov	%o7, %g1
-	st	%o5, [%g7 + PID]
-	call	__syscall_error
-	 mov	%g1, %o7
-2:	sub	%o1, 1, %o1
-	andcc	%o0, %o1, %o0
-	bne,a	1f
-	 st	%o5, [%g7 + PID]
-1:	retl
-	 nop
-END(__vfork)
-
-libc_hidden_def (vfork)
-weak_alias (__vfork, vfork)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/Makefile.arch
index b48f4cb0b..f3883dbe0 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/Makefile.arch
@@ -5,7 +5,7 @@
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 #
 
-libpthread_linux_arch_SSRC = clone.S pthread_once.S \
+libpthread_linux_arch_SSRC = pthread_once.S \
 	lowlevellock.S pthread_barrier_wait.S pthread_cond_signal.S pthread_cond_broadcast.S \
 	sem_post.S sem_timedwait.S lowlevelrobustlock.S \
 	sem_trywait.S sem_wait.S pthread_rwlock_rdlock.S pthread_rwlock_wrlock.S \
@@ -14,9 +14,7 @@ libpthread_linux_arch_SSRC = clone.S pthread_once.S \
 libpthread_linux_arch_CSRC = pthread_spin_init.c
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S libc-cancellation.S libc-lowlevellock.S
-libc_linux_arch_SSRC-OMIT = waitpid.S
+libc_linux_arch_SSRC = libc-cancellation.S libc-lowlevellock.S
 librt_linux_arch_SSRC = librt-cancellation.S
 
 ASFLAGS += -DUSE___THREAD
-
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/clone.S
deleted file mode 100644
index efbaee3d1..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/clone.S
+++ /dev/null
@@ -1,3 +0,0 @@
-#include <tcb-offsets.h>
-#define RESET_PID
-#include <libc/sysdeps/linux/x86_64/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/vfork.S
deleted file mode 100644
index f3280b8cc..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/x86_64/vfork.S
+++ /dev/null
@@ -1,42 +0,0 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-/* We want an #include_next, but we are the main source file.
-   So, #include ourselves and in that incarnation we can use #include_next.  */
-#ifndef INCLUDED_SELF
-# define INCLUDED_SELF
-# include <vfork.S>
-#else
-
-# include <tcb-offsets.h>
-
-# define SAVE_PID \
-	movl	%fs:PID, %esi;						      \
-	movl	$0x80000000, %ecx;					      \
-	movl	%esi, %edx;						      \
-	negl	%edx;							      \
-	cmove	%ecx, %edx;						      \
-	movl	%edx, %fs:PID
-
-# define RESTORE_PID \
-	testq	%rax, %rax;						      \
-	je	1f;							      \
-	movl	%esi, %fs:PID;						      \
-1:
-
-# include_next <vfork.S>
-#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch
index 7014c3f04..6f1734871 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch
@@ -2,13 +2,10 @@
 # Licensed under the LGPL v2.1, see the file COPYING and LICENSE.
 
 libc_linux_arch_CSRC = fork.c
-libc_linux_arch_SSRC = clone.S vfork.S
 libpthread_linux_arch_CSRC = pthread_once.c
 libpthread_linux_arch_SSRC =
 
 CFLAGS-OMIT-fork.c = -DNOT_IN_libc -DIS_IN_libpthread
 
-ASFLAGS-clone.S = -D_LIBC_REENTRANT
-ASFLAGS-vfork.S = -D_LIBC_REENTRANT
 ASFLAGS-syscall.S = -D_LIBC_REENTRANT
 ASFLAGS-mmap.S = -D_LIBC_REENTRANT
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/clone.S
deleted file mode 100644
index 539b9ef38..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/clone.S
+++ /dev/null
@@ -1,3 +0,0 @@
-#define RESET_PID
-#include <tcb-offsets.h>
-#include <libc/sysdeps/linux/xtensa/clone.S>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/vfork.S
deleted file mode 100644
index 46eb76dd6..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/vfork.S
+++ /dev/null
@@ -1,59 +0,0 @@
-/* Copyright (C) 2013 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library.  If not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <tls.h>
-
-/*
-  Save the PID value, save 0x80000000 if PID was 0.
-  Registers a2 and a3 are available; ar should return the PID and as threadptr
- */
-
-#define SAVE_PID(pid,tp,ar,as)						\
-	rur	tp, threadptr;						\
-	movi	ar, TLS_PRE_TCB_SIZE;					\
-	sub	tp, tp, ar;						\
-	l32i	pid, tp, PID;						\
-	neg	ar, pid;						\
-	movi	as, 0x80000000;						\
-	moveqz	ar, as, ar;						\
-	s32i	ar, tp, PID;						\
-
-/*
-  Restore the PID value, restore to 0 if saved value was 0x80000000
-  Return value from the syscall is in a2.
- */
-#define RESTORE_PID(pid,tp,res)						\
-	beqz	res, 1f;						\
-	s32i	pid, tp, PID;						\
-1:
-
-/*
-  Special version for call12, where we don't have enough registers
-  available to preserve the original PID.
- */
-#define RESTORE_PID12(ar, as, at)					\
-	rur	as, threadptr;						\
-	movi	ar, TLS_PRE_TCB_SIZE;					\
-	sub	as, as, ar;						\
-	l32i	ar, as, PID;						\
-	movi	at, 0x80000000;						\
-	sub	at, at, ar;						\
-	neg	ar, ar;							\
-	moveqz	ar, at, at;						\
-	s32i	ar, as, PID;
-
-#include <libc/sysdeps/linux/xtensa/vfork.S>
diff --git a/libpthread/nptl/sysdeps/x86_64/tcb-offsets.sym b/libpthread/nptl/sysdeps/x86_64/tcb-offsets.sym
index cf863752e..d908521be 100644
--- a/libpthread/nptl/sysdeps/x86_64/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/x86_64/tcb-offsets.sym
@@ -3,7 +3,6 @@
 
 RESULT			offsetof (struct pthread, result)
 TID			offsetof (struct pthread, tid)
-PID			offsetof (struct pthread, pid)
 CANCELHANDLING		offsetof (struct pthread, cancelhandling)
 CLEANUP_JMP_BUF		offsetof (struct pthread, cleanup_jmp_buf)
 CLEANUP			offsetof (struct pthread, cleanup)
diff --git a/libpthread/nptl/sysdeps/xtensa/tcb-offsets.sym b/libpthread/nptl/sysdeps/xtensa/tcb-offsets.sym
index 4c8687647..54eae20b1 100644
--- a/libpthread/nptl/sysdeps/xtensa/tcb-offsets.sym
+++ b/libpthread/nptl/sysdeps/xtensa/tcb-offsets.sym
@@ -3,5 +3,4 @@
 
 TLS_PRE_TCB_SIZE	sizeof (struct pthread)
 MULTIPLE_THREADS_OFFSET	offsetof (struct pthread, header.multiple_threads)
-PID			offsetof (struct pthread, pid)
 TID			offsetof (struct pthread, tid)