remove linuxthreads.new, rename linuxthreads.old

Linuxthreads.new isn't really useful with the existence
of NPTL/TLS for well supported architectures. There is no
reason to use LT.new for ARM/MIPS or other architectures
supporting NPTL/TLS. It is not available for noMMU architectures
like Blackfin or FR-V. To simplify the live of the few uClibc-ng
developers, LT.new is removed and LT.old is renamed to LT.
LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS

3 files changed, 10 insertions, 246 deletions

diff --git a/libpthread/linuxthreads/sysdeps/x86_64/pspinlock.c b/libpthread/linuxthreads/sysdeps/x86_64/pspinlock.c
deleted file mode 100644
index 80c1b05a8..000000000
--- a/libpthread/linuxthreads/sysdeps/x86_64/pspinlock.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/* POSIX spinlock implementation.  x86-64 version.
-   Copyright (C) 2001 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 <errno.h>
-#include <pthread.h>
-#include "internals.h"
-
-/* This implementation is similar to the one used in the Linux kernel.
-   But the kernel is byte instructions for the memory access.  This is
-   faster but unusable here.  The problem is that only 128
-   threads/processes could use the spinlock at the same time.  If (by
-   a design error in the program) a thread/process would hold the
-   spinlock for a time long enough to accumulate 128 waiting
-   processes, the next one will find a positive value in the spinlock
-   and assume it is unlocked.  We cannot accept that.  */
-
-int
-__pthread_spin_lock (pthread_spinlock_t *lock)
-{
-  __asm__ __volatile__
-    ("\n"
-     "1:\n\t"
-     "lock; decl %0\n\t"
-     "js 2f\n\t"
-     ".section .text.spinlock,\"ax\"\n"
-     "2:\n\t"
-     "cmpl $0,%0\n\t"
-     "rep; nop\n\t"
-     "jle 2b\n\t"
-     "jmp 1b\n\t"
-     ".previous"
-     : "=m" (*lock));
-  return 0;
-}
-weak_alias (__pthread_spin_lock, pthread_spin_lock)
-
-
-int
-__pthread_spin_trylock (pthread_spinlock_t *lock)
-{
-  int oldval;
-
-  __asm__ __volatile__
-    ("xchgl %0,%1"
-     : "=r" (oldval), "=m" (*lock)
-     : "0" (0));
-  return oldval > 0 ? 0 : EBUSY;
-}
-weak_alias (__pthread_spin_trylock, pthread_spin_trylock)
-
-
-int
-__pthread_spin_unlock (pthread_spinlock_t *lock)
-{
-  __asm__ __volatile__
-    ("movl $1,%0"
-     : "=m" (*lock));
-  return 0;
-}
-weak_alias (__pthread_spin_unlock, pthread_spin_unlock)
-
-
-int
-__pthread_spin_init (pthread_spinlock_t *lock, int pshared)
-{
-  /* We can ignore the `pshared' parameter.  Since we are busy-waiting
-     all processes which can access the memory location `lock' points
-     to can use the spinlock.  */
-  *lock = 1;
-  return 0;
-}
-weak_alias (__pthread_spin_init, pthread_spin_init)
-
-
-int
-__pthread_spin_destroy (pthread_spinlock_t *lock)
-{
-  /* Nothing to do.  */
-  return 0;
-}
-weak_alias (__pthread_spin_destroy, pthread_spin_destroy)
diff --git a/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h b/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
index 0e0851e1e..ed1fa30b1 100644
--- a/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
+++ b/libpthread/linuxthreads/sysdeps/x86_64/pt-machine.h
@@ -20,7 +20,7 @@
 #ifndef _PT_MACHINE_H
 #define _PT_MACHINE_H   1
 
-# include <features.h>
+#include <features.h>
 
 #ifndef __ASSEMBLER__
 # include <stddef.h>	/* For offsetof.  */
@@ -32,6 +32,9 @@
 #  define PT_EI __extern_always_inline
 # endif
 
+extern long int testandset (int *);
+extern int __compare_and_swap (long int *, long int, long int);
+
 /* Get some notion of the current stack.  Need not be exactly the top
    of the stack, just something somewhere in the current frame.  */
 # define CURRENT_STACK_FRAME  stack_pointer
@@ -40,14 +43,14 @@ register char * stack_pointer __asm__ ("%rsp") __attribute_used__;
 
 /* Spinlock implementation; required.  */
 PT_EI long int
-testandset (int *spinlock)
+testandset (int *__spinlock)
 {
   long int ret;
 
   __asm__ __volatile__ (
 	"xchgl %k0, %1"
-	: "=r"(ret), "=m"(*spinlock)
-	: "0"(1), "m"(*spinlock)
+	: "=r"(ret), "=m"(*__spinlock)
+	: "0"(1), "m"(*__spinlock)
 	: "memory");
 
   return ret;
@@ -58,157 +61,18 @@ testandset (int *spinlock)
 # define HAS_COMPARE_AND_SWAP
 
 PT_EI int
-__compare_and_swap (long int *p, long int oldval, long int newval)
+__compare_and_swap (long int *__p, long int __oldval, long int __newval)
 {
   char ret;
   long int readval;
 
   __asm__ __volatile__ ("lock; cmpxchgq %3, %1; sete %0"
-			: "=q" (ret), "=m" (*p), "=a" (readval)
-			: "r" (newval), "m" (*p), "a" (oldval)
+			: "=q" (ret), "=m" (*__p), "=a" (readval)
+			: "r" (__newval), "m" (*__p), "a" (__oldval)
 			: "memory");
   return ret;
 }
 
-/* Return the thread descriptor for the current thread.
-
-   The contained asm must *not* be marked volatile since otherwise
-   assignments like
-	pthread_descr self = thread_self();
-   do not get optimized away.  */
-# define THREAD_SELF \
-({									      \
-  register pthread_descr __self;					      \
-  __asm__ ("movq %%fs:%c1,%0" : "=r" (__self)				      \
-	   : "i" (offsetof (struct _pthread_descr_struct,		      \
-			    p_header.data.self)));			      \
-  __self;								      \
-})
-
-/* Prototype for the system call.  */
-extern int arch_prctl (int __code, unsigned long __addr);
-
-/* Initialize the thread-unique value.  */
-# define INIT_THREAD_SELF(descr, nr) \
-{									      \
-  if (arch_prctl (ARCH_SET_FS, (unsigned long)descr) != 0)		      \
-    abort ();								      \
-}
-
-/* Read member of the thread descriptor directly.  */
-# define THREAD_GETMEM(descr, member) \
-({									      \
-  __typeof__ (descr->member) __value;					      \
-  if (sizeof (__value) == 1)						      \
-    __asm__ __volatile__ ("movb %%fs:%P2,%b0"				      \
-			  : "=q" (__value)				      \
-			  : "0" (0),					      \
-			    "i" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else if (sizeof (__value) == 4)					      \
-    __asm__ __volatile__ ("movl %%fs:%P2,%k0"				      \
-			  : "=r" (__value)				      \
-			  : "0" (0),					      \
-			    "i" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else									      \
-    {									      \
-      if (sizeof (__value) != 8)					      \
-	/* There should not be any value with a size other than 1, 4 or 8.  */\
-	abort ();							      \
-									      \
-      __asm__ __volatile__ ("movq %%fs:%P1,%0"				      \
-			    : "=r" (__value)				      \
-			    : "i" (offsetof (struct _pthread_descr_struct,    \
-					     member)));			      \
-    }									      \
-  __value;								      \
-})
-
-/* Same as THREAD_GETMEM, but the member offset can be non-constant.  */
-# define THREAD_GETMEM_NC(descr, member) \
-({									      \
-  __typeof__ (descr->member) __value;					      \
-  if (sizeof (__value) == 1)						      \
-    __asm__ __volatile__ ("movb %%fs:(%2),%b0"				      \
-			  : "=q" (__value)				      \
-			  : "0" (0),					      \
-			    "r" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else if (sizeof (__value) == 4)					      \
-    __asm__ __volatile__ ("movl %%fs:(%2),%k0"				      \
-			  : "=r" (__value)				      \
-			  : "0" (0),					      \
-			    "r" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else									      \
-    {									      \
-      if (sizeof (__value) != 8)					      \
-	/* There should not be any value with a size other than 1, 4 or 8.  */\
-	abort ();							      \
-									      \
-      __asm__ __volatile__ ("movq %%fs:(%1),%0"				      \
-			    : "=r" (__value)				      \
-			    : "r" (offsetof (struct _pthread_descr_struct,    \
-					     member)));			      \
-    }									      \
-  __value;								      \
-})
-
-/* Set member of the thread descriptor directly.  */
-# define THREAD_SETMEM(descr, member, value) \
-({									      \
-  __typeof__ (descr->member) __value = (value);				      \
-  if (sizeof (__value) == 1)						      \
-    __asm__ __volatile__ ("movb %0,%%fs:%P1" :				      \
-			  : "q" (__value),				      \
-			    "i" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else if (sizeof (__value) == 4)					      \
-    __asm__ __volatile__ ("movl %k0,%%fs:%P1" :				      \
-			  : "r" (__value),				      \
-			    "i" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else									      \
-    {									      \
-      if (sizeof (__value) != 8)					      \
-	/* There should not be any value with a size other than 1, 4 or 8.  */\
-	abort ();							      \
-									      \
-      __asm__ __volatile__ ("movq %0,%%fs:%P1" :			      \
-			    : "r" (__value),				      \
-			      "i" (offsetof (struct _pthread_descr_struct,    \
-					     member)));			      \
-    }									      \
-})
-
-/* Same as THREAD_SETMEM, but the member offset can be non-constant.  */
-# define THREAD_SETMEM_NC(descr, member, value) \
-({									      \
-  __typeof__ (descr->member) __value = (value);				      \
-  if (sizeof (__value) == 1)						      \
-    __asm__ __volatile__ ("movb %0,%%fs:(%1)" :				      \
-			  : "q" (__value),				      \
-			    "r" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else if (sizeof (__value) == 4)					      \
-    __asm__ __volatile__ ("movl %k0,%%fs:(%1)" :			      \
-			  : "r" (__value),				      \
-			    "r" (offsetof (struct _pthread_descr_struct,      \
-					   member)));			      \
-  else									      \
-    {									      \
-      if (sizeof (__value) != 8)					      \
-	/* There should not be any value with a size other than 1, 4 or 8.  */\
-	abort ();							      \
-									      \
-      __asm__ __volatile__ ("movq %0,%%fs:(%1)"	:			      \
-			    : "r" (__value),				      \
-			      "r" (offsetof (struct _pthread_descr_struct,    \
-					     member)));			      \
-    }									      \
-})
-
 #endif /* !__ASSEMBLER__ */
 
 /* We want the OS to assign stack addresses.  */
diff --git a/libpthread/linuxthreads/sysdeps/x86_64/tcb-offsets.sym b/libpthread/linuxthreads/sysdeps/x86_64/tcb-offsets.sym
deleted file mode 100644
index aee6be257..000000000
--- a/libpthread/linuxthreads/sysdeps/x86_64/tcb-offsets.sym
+++ /dev/null
@@ -1,4 +0,0 @@
-#include <sysdep.h>
-#include <tls.h>
-
-MULTIPLE_THREADS_OFFSET		offsetof (tcbhead_t, multiple_threads)