uclibc-svn: correct linuxthreads and add log2

* add linuxthread support for am with arm-linuxthreads.patch,
  otherwise qt-emebedded 4.4.1 is not buildable
* to enable linuxthreads you have to comment 
  LINUXTHREADS_OLD=y in uClibc.conf
* include linuxthreads-changes.patch from the uclibc-mailinglist
* add log2 function with uclibc_mathc99.patch, one program
  in qt-emebdded 4.4.1 requires this
* bump PR

4 files changed, 780 insertions, 1 deletions

diff --git a/packages/uclibc/uclibc-svn/arm-linuxthreads.patch b/packages/uclibc/uclibc-svn/arm-linuxthreads.patch
new file mode 100644
index 0000000000..e222668a66
--- /dev/null
+++ b/packages/uclibc/uclibc-svn/arm-linuxthreads.patch
@@ -0,0 +1,218 @@
+Index: uClibc/libpthread/linuxthreads/sysdeps/unix/sysv/linux/arm/vfork.S
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ uClibc/libpthread/linuxthreads/sysdeps/unix/sysv/linux/arm/vfork.S	2008-08-28 00:22:06.278340855 +0200
+@@ -0,0 +1,78 @@
++/* Copyright (C) 1999, 2002, 2003, 2005 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Philip Blundell <philb@gnu.org>.
++
++   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, write to the Free
++   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++   02111-1307 USA.  */
++
++#include <sysdep-cancel.h>
++#define _ERRNO_H	1
++#include <bits/errno.h>
++#include <kernel-features.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)
++
++#ifdef __NR_vfork
++
++#ifdef SHARED
++	ldr	ip, 1f
++	ldr	r0, 2f
++3:	add	ip, pc, ip
++	ldr	r0, [ip, r0]
++#else
++	ldr	r0, 1f
++#endif
++	movs	r0, r0
++	bne	HIDDEN_JUMPTARGET (__fork)
++
++	DO_CALL (vfork, 0)
++	cmn	a1, #4096
++	RETINSTR(cc, lr)
++
++#ifndef __ASSUME_VFORK_SYSCALL
++	/* Check if vfork syscall is known at all.  */
++	cmn	a1, #ENOSYS
++	bne	PLTJMP(C_SYMBOL_NAME(__syscall_error))
++#endif
++
++#endif
++
++#ifndef __ASSUME_VFORK_SYSCALL
++	/* If we don't have vfork, fork is close enough.  */
++	DO_CALL (fork, 0)
++	cmn	a1, #4096
++	RETINSTR(cc, lr)
++#elif !defined __NR_vfork
++# error "__NR_vfork not available and __ASSUME_VFORK_SYSCALL defined"
++#endif
++    	b	PLTJMP(C_SYMBOL_NAME(__syscall_error))
++
++#ifdef SHARED
++1:	.word	_GLOBAL_OFFSET_TABLE_ - 3b - 8
++2:	.word	__libc_pthread_functions(GOTOFF)
++#else
++	.weak	pthread_create
++1:	.word	pthread_create
++#endif
++
++PSEUDO_END (__vfork)
++libc_hidden_def (__vfork)
++
++weak_alias (__vfork, vfork)
+Index: uClibc/libpthread/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ uClibc/libpthread/linuxthreads/sysdeps/unix/sysv/linux/arm/sysdep-cancel.h	2008-08-28 00:28:04.301636993 +0200
+@@ -0,0 +1,130 @@
++/* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Phil Blundell <pb@nexus.co.uk>, 2003.
++
++   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, write to the Free
++   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
++   02111-1307 USA.  */
++
++#include <tls.h>
++#include <pt-machine.h>
++#ifndef __ASSEMBLER__
++# include <linuxthreads/internals.h>
++#endif
++
++#if !defined NOT_IN_libc || defined IS_IN_libpthread
++
++/* We push lr onto the stack, so we have to use ldmib instead of ldmia
++   to find the saved arguments.  */
++# ifdef PIC
++#  undef DOARGS_5
++#  undef DOARGS_6
++#  undef DOARGS_7
++#  define DOARGS_5 str r4, [sp, $-4]!; ldr r4, [sp, $8];
++#  define DOARGS_6 mov ip, sp; stmfd sp!, {r4, r5}; ldmib ip, {r4, r5};
++#  define DOARGS_7 mov ip, sp; stmfd sp!, {r4, r5, r6}; ldmib ip, {r4, r5, r6};
++# endif
++
++# undef PSEUDO_RET
++# define PSEUDO_RET						        \
++    ldrcc pc, [sp], $4;						        \
++    ldr	lr, [sp], $4;							\
++    b PLTJMP(SYSCALL_ERROR)
++
++# undef PSEUDO
++# define PSEUDO(name, syscall_name, args)				\
++  .section ".text";							\
++    PSEUDO_PROLOGUE;							\
++  ENTRY (name);								\
++    SINGLE_THREAD_P;							\
++    bne .Lpseudo_cancel;						\
++    DO_CALL (syscall_name, args);					\
++    cmn r0, $4096;							\
++    RETINSTR(cc, lr);							\
++    b PLTJMP(SYSCALL_ERROR);						\
++  .Lpseudo_cancel:							\
++    str lr, [sp, $-4]!;							\
++    DOCARGS_##args;	/* save syscall args around CENABLE.  */	\
++    CENABLE;								\
++    mov ip, r0;		/* put mask in safe place.  */			\
++    UNDOCARGS_##args;	/* restore syscall args.  */			\
++    swi SYS_ify (syscall_name);	/* do the call.  */			\
++    str r0, [sp, $-4]!; /* save syscall return value.  */		\
++    mov r0, ip;		/* get mask back.  */				\
++    CDISABLE;								\
++    ldr r0, [sp], $4;	/* retrieve return value.  */			\
++    UNDOC2ARGS_##args;	/* fix register damage.  */			\
++    cmn r0, $4096;
++
++# define DOCARGS_0
++# define UNDOCARGS_0
++# define UNDOC2ARGS_0
++
++# define DOCARGS_1	str r0, [sp, #-4]!;
++# define UNDOCARGS_1	ldr r0, [sp], #4;
++# define UNDOC2ARGS_1
++
++# define DOCARGS_2	str r1, [sp, #-4]!; str r0, [sp, #-4]!;
++# define UNDOCARGS_2	ldr r0, [sp], #4; ldr r1, [sp], #4;
++# define UNDOC2ARGS_2
++
++# define DOCARGS_3	str r2, [sp, #-4]!; str r1, [sp, #-4]!; str r0, [sp, #-4]!;
++# define UNDOCARGS_3	ldr r0, [sp], #4; ldr r1, [sp], #4; ldr r2, [sp], #4
++# define UNDOC2ARGS_3
++
++# define DOCARGS_4	stmfd sp!, {r0-r3}
++# define UNDOCARGS_4	ldmfd sp!, {r0-r3}
++# define UNDOC2ARGS_4
++
++# define DOCARGS_5	stmfd sp!, {r0-r3}
++# define UNDOCARGS_5	ldmfd sp, {r0-r3}; str r4, [sp, #-4]!; ldr r4, [sp, #24]
++# define UNDOC2ARGS_5   ldr r4, [sp], #20
++
++# ifdef IS_IN_libpthread
++#  define CENABLE	bl PLTJMP(__pthread_enable_asynccancel)
++#  define CDISABLE	bl PLTJMP(__pthread_disable_asynccancel)
++#  define __local_multiple_threads __pthread_multiple_threads
++# else
++#  define CENABLE	bl PLTJMP(__libc_enable_asynccancel)
++#  define CDISABLE	bl PLTJMP(__libc_disable_asynccancel)
++#  define __local_multiple_threads __libc_multiple_threads
++# endif
++
++# ifndef __ASSEMBLER__
++extern int __local_multiple_threads attribute_hidden;
++#  define SINGLE_THREAD_P __builtin_expect (__local_multiple_threads == 0, 1)
++# else
++#  if !defined PIC
++#   define SINGLE_THREAD_P						\
++  ldr ip, =__local_multiple_threads;					\
++  ldr ip, [ip];								\
++  teq ip, #0;
++#   define PSEUDO_PROLOGUE
++#  else
++#   define SINGLE_THREAD_P						\
++  ldr ip, 1b;								\
++2:									\
++  ldr ip, [pc, ip];							\
++  teq ip, #0;
++#   define PSEUDO_PROLOGUE						\
++  1:  .word __local_multiple_threads - 2f - 8;
++#  endif
++# endif
++
++#elif !defined __ASSEMBLER__
++
++/* This code should never be used but we define it anyhow.  */
++# define SINGLE_THREAD_P (1)
++
++#endif
diff --git a/packages/uclibc/uclibc-svn/arm/uClibc.config b/packages/uclibc/uclibc-svn/arm/uClibc.config
index 9460573cdd..546889aa8b 100644
--- a/packages/uclibc/uclibc-svn/arm/uClibc.config
+++ b/packages/uclibc/uclibc-svn/arm/uClibc.config
@@ -76,7 +76,7 @@ UCLIBC_CTOR_DTOR=y
 # HAS_NO_THREADS is not set
 UCLIBC_HAS_THREADS=y
 PTHREADS_DEBUG_SUPPORT=y
-LINUXTHREADS_OLD=y
+# LINUXTHREADS_OLD is not set
 UCLIBC_HAS_LFS=y
 # MALLOC is not set
 # MALLOC_SIMPLE is not set
diff --git a/packages/uclibc/uclibc-svn/linuxthreads-changes.patch b/packages/uclibc/uclibc-svn/linuxthreads-changes.patch
new file mode 100644
index 0000000000..f6f32cdd29
--- /dev/null
+++ b/packages/uclibc/uclibc-svn/linuxthreads-changes.patch
@@ -0,0 +1,291 @@
+Index: uClibc/libpthread/linuxthreads/descr.h
+===================================================================
+--- uClibc.orig/libpthread/linuxthreads/descr.h	2008-08-27 23:59:46.171809044 +0200
++++ uClibc/libpthread/linuxthreads/descr.h	2008-08-28 00:00:35.435134759 +0200
+@@ -123,9 +123,9 @@
+       union dtv *dtvp;
+       pthread_descr self;	/* Pointer to this structure */
+       int multiple_threads;
+-# ifdef NEED_DL_SYSINFO
+       uintptr_t sysinfo;
+-# endif
++      uintptr_t stack_guard;
++      uintptr_t pointer_guard;
+     } data;
+     void *__padding[16];
+   } p_header;
+@@ -193,6 +193,13 @@
+   size_t p_alloca_cutoff;	/* Maximum size which should be allocated
+ 				   using alloca() instead of malloc().  */
+   /* New elements must be added at the end.  */
++
++  /* This member must be last.  */
++  char end_padding[];
++
++#define PTHREAD_STRUCT_END_PADDING \
++  (sizeof (struct _pthread_descr_struct)			      \
++   - offsetof (struct _pthread_descr_struct, end_padding))
+ } __attribute__ ((aligned(32))); /* We need to align the structure so that
+ 				    doubles are aligned properly.  This is 8
+ 				    bytes on MIPS and 16 bytes on MIPS64.
+Index: uClibc/libpthread/linuxthreads/manager.c
+===================================================================
+--- uClibc.orig/libpthread/linuxthreads/manager.c	2008-08-27 23:59:54.185140485 +0200
++++ uClibc/libpthread/linuxthreads/manager.c	2008-08-28 00:00:35.435134759 +0200
+@@ -679,6 +679,17 @@
+   new_thread->p_inheritsched = attr ? attr->__inheritsched : 0;
+   new_thread->p_alloca_cutoff = stksize / 4 > __MAX_ALLOCA_CUTOFF
+ 				 ? __MAX_ALLOCA_CUTOFF : stksize / 4;
++
++  /* Copy the stack guard canary.  */
++#ifdef THREAD_COPY_STACK_GUARD
++  THREAD_COPY_STACK_GUARD (new_thread);
++#endif
++
++  /* Copy the pointer guard value.  */
++#ifdef THREAD_COPY_POINTER_GUARD
++  THREAD_COPY_POINTER_GUARD (new_thread);
++#endif
++
+   /* Initialize the thread handle */
+   __pthread_init_lock(&__pthread_handles[sseg].h_lock);
+   __pthread_handles[sseg].h_descr = new_thread;
+@@ -742,15 +753,15 @@
+ 	  pid = __clone2(pthread_start_thread_event,
+   		 (void **)new_thread_bottom,
+ 			 (char *)stack_addr - new_thread_bottom,
+-			 CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
++			 CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM |
+ 			 __pthread_sig_cancel, new_thread);
+ #elif _STACK_GROWS_UP
+ 	  pid = __clone(pthread_start_thread_event, (void *) new_thread_bottom,
+-			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
++			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM |
+ 			__pthread_sig_cancel, new_thread);
+ #else
+ 	  pid = __clone(pthread_start_thread_event, stack_addr,
+-			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
++			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM |
+ 			__pthread_sig_cancel, new_thread);
+ #endif
+ 	  saved_errno = errno;
+@@ -783,15 +794,15 @@
+       pid = __clone2(pthread_start_thread,
+ 		     (void **)new_thread_bottom,
+                      (char *)stack_addr - new_thread_bottom,
+-		     CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
++		     CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM |
+ 		     __pthread_sig_cancel, new_thread);
+ #elif _STACK_GROWS_UP
+       pid = __clone(pthread_start_thread, (void *) new_thread_bottom,
+-		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
++		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM |
+ 		    __pthread_sig_cancel, new_thread);
+ #else
+       pid = __clone(pthread_start_thread, stack_addr,
+-		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND |
++		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM |
+ 		    __pthread_sig_cancel, new_thread);
+ #endif /* !NEED_SEPARATE_REGISTER_STACK */
+       saved_errno = errno;
+@@ -892,10 +903,11 @@
+ #ifdef _STACK_GROWS_UP
+ # ifdef USE_TLS
+       size_t stacksize = guardaddr - th->p_stackaddr;
++      guardaddr = th->p_stackaddr;
+ # else
+       size_t stacksize = guardaddr - (char *)th;
+-# endif
+       guardaddr = (char *)th;
++# endif
+ #else
+       /* Guardaddr is always set, even if guardsize is 0.  This allows
+ 	 us to compute everything else.  */
+Index: uClibc/libpthread/linuxthreads/pthread.c
+===================================================================
+--- uClibc.orig/libpthread/linuxthreads/pthread.c	2008-08-28 00:00:00.825141935 +0200
++++ uClibc/libpthread/linuxthreads/pthread.c	2008-08-28 00:00:35.438472147 +0200
+@@ -698,6 +698,16 @@
+   mgr = &__pthread_manager_thread;
+ #endif
+ 
++  /* Copy the stack guard canary.  */
++#ifdef THREAD_COPY_STACK_GUARD
++  THREAD_COPY_STACK_GUARD (mgr);
++#endif
++
++  /* Copy the pointer guard value.  */
++#ifdef THREAD_COPY_POINTER_GUARD
++  THREAD_COPY_POINTER_GUARD (mgr);
++#endif
++
+   __pthread_manager_request = manager_pipe[1]; /* writing end */
+   __pthread_manager_reader = manager_pipe[0]; /* reading end */
+ 
+@@ -738,17 +748,17 @@
+ 	  pid = __clone2(__pthread_manager_event,
+ 			 (void **) __pthread_manager_thread_bos,
+ 			 THREAD_MANAGER_STACK_SIZE,
+-			 CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
++			 CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM,
+ 			 mgr);
+ #elif _STACK_GROWS_UP
+ 	  pid = __clone(__pthread_manager_event,
+ 			(void **) __pthread_manager_thread_bos,
+-			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
++			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM,
+ 			mgr);
+ #else
+ 	  pid = __clone(__pthread_manager_event,
+ 			(void **) __pthread_manager_thread_tos,
+-			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
++			CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM,
+ 			mgr);
+ #endif
+ 
+@@ -778,13 +788,13 @@
+ #ifdef NEED_SEPARATE_REGISTER_STACK
+       pid = __clone2(__pthread_manager, (void **) __pthread_manager_thread_bos,
+ 		     THREAD_MANAGER_STACK_SIZE,
+-		     CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND, mgr);
++		     CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM, mgr);
+ #elif _STACK_GROWS_UP
+       pid = __clone(__pthread_manager, (void **) __pthread_manager_thread_bos,
+-		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND, mgr);
++		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM, mgr);
+ #else
+       pid = __clone(__pthread_manager, (void **) __pthread_manager_thread_tos,
+-		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND, mgr);
++		    CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM, mgr);
+ #endif
+     }
+   if (__builtin_expect (pid, 0) == -1) {
+@@ -971,6 +981,10 @@
+     struct pthread_request request;
+     pthread_descr self = thread_self();
+ 
++    /* Make sure we come back here after suspend(), in case we entered
++       from a signal handler.  */
++    THREAD_SETMEM(self, p_signal_jmp, NULL);
++
+     request.req_thread = self;
+     request.req_kind = REQ_PROCESS_EXIT;
+     request.req_args.exit.code = retcode;
+@@ -1198,13 +1212,13 @@
+ 
+ void __pthread_restart_old(pthread_descr th)
+ {
+-  if (atomic_increment(&th->p_resume_count) == -1)
++  if (pthread_atomic_increment(&th->p_resume_count) == -1)
+     kill(th->p_pid, __pthread_sig_restart);
+ }
+ 
+ void __pthread_suspend_old(pthread_descr self)
+ {
+-  if (atomic_decrement(&self->p_resume_count) <= 0)
++  if (pthread_atomic_decrement(&self->p_resume_count) <= 0)
+     __pthread_wait_for_restart_signal(self);
+ }
+ 
+@@ -1215,7 +1229,7 @@
+   int was_signalled = 0;
+   sigjmp_buf jmpbuf;
+ 
+-  if (atomic_decrement(&self->p_resume_count) == 0) {
++  if (pthread_atomic_decrement(&self->p_resume_count) == 0) {
+     /* Set up a longjmp handler for the restart signal, unblock
+        the signal and sleep. */
+ 
+@@ -1272,9 +1286,9 @@
+      being delivered. */
+ 
+   if (!was_signalled) {
+-    if (atomic_increment(&self->p_resume_count) != -1) {
++    if (pthread_atomic_increment(&self->p_resume_count) != -1) {
+       __pthread_wait_for_restart_signal(self);
+-      atomic_decrement(&self->p_resume_count); /* should be zero now! */
++      pthread_atomic_decrement(&self->p_resume_count); /* should be zero now! */
+       /* woke spontaneously and consumed restart signal */
+       return 1;
+     }
+Index: uClibc/libpthread/linuxthreads/specific.c
+===================================================================
+--- uClibc.orig/libpthread/linuxthreads/specific.c	2008-08-28 00:00:07.595139286 +0200
++++ uClibc/libpthread/linuxthreads/specific.c	2008-08-28 00:00:35.438472147 +0200
+@@ -104,13 +104,14 @@
+      that if the key is reallocated later by pthread_key_create, its
+      associated values will be NULL in all threads.
+ 
+-     If no threads have been created yet, clear it just in the
+-     current thread.  */
++     If no threads have been created yet, or if we are exiting, clear
++     it just in the current thread.  */
+ 
+   struct pthread_key_delete_helper_args args;
+   args.idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE;
+   args.idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE;
+-  if (__pthread_manager_request != -1)
++  if (__pthread_manager_request != -1
++      && !(__builtin_expect (__pthread_exit_requested, 0)))
+     {
+       struct pthread_request request;
+ 
+@@ -203,8 +204,9 @@
+   __pthread_lock(THREAD_GETMEM(self, p_lock), self);
+   for (i = 0; i < PTHREAD_KEY_1STLEVEL_SIZE; i++) {
+     if (THREAD_GETMEM_NC(self, p_specific[i]) != NULL) {
+-      free(THREAD_GETMEM_NC(self, p_specific[i]));
++      void *p = THREAD_GETMEM_NC(self, p_specific[i]);
+       THREAD_SETMEM_NC(self, p_specific[i], NULL);
++      free(p);
+     }
+   }
+   __pthread_unlock(THREAD_GETMEM(self, p_lock));
+Index: uClibc/libpthread/linuxthreads/spinlock.c
+===================================================================
+--- uClibc.orig/libpthread/linuxthreads/spinlock.c	2008-08-28 00:00:17.805140454 +0200
++++ uClibc/libpthread/linuxthreads/spinlock.c	2008-08-28 00:00:35.438472147 +0200
+@@ -637,8 +637,20 @@
+ #if defined HAS_COMPARE_AND_SWAP
+ 	wait_node_dequeue(pp_head, pp_max_prio, p_max_prio);
+ #endif
++
++      /* Release the spinlock before restarting.  */
++#if defined TEST_FOR_COMPARE_AND_SWAP
++      if (!__pthread_has_cas)
++#endif
++#if !defined HAS_COMPARE_AND_SWAP || defined TEST_FOR_COMPARE_AND_SWAP
++	{
++	  __pthread_release(&lock->__spinlock);
++	}
++#endif
++
+       restart(p_max_prio->thr);
+-      break;
++
++      return;
+     }
+   }
+ 
+Index: uClibc/libpthread/linuxthreads/spinlock.h
+===================================================================
+--- uClibc.orig/libpthread/linuxthreads/spinlock.h	2008-08-28 00:00:24.768471655 +0200
++++ uClibc/libpthread/linuxthreads/spinlock.h	2008-08-28 00:02:42.971786951 +0200
+@@ -172,7 +172,7 @@
+ 
+ /* Operations on pthread_atomic, which is defined in internals.h */
+ 
+-static __inline__ long atomic_increment(struct pthread_atomic *pa)
++static __inline__ long pthread_atomic_increment(struct pthread_atomic *pa)
+ {
+     long oldval;
+ 
+@@ -184,7 +184,7 @@
+ }
+ 
+ 
+-static __inline__ long atomic_decrement(struct pthread_atomic *pa)
++static __inline__ long pthread_atomic_decrement(struct pthread_atomic *pa)
+ {
+     long oldval;
+ 
diff --git a/packages/uclibc/uclibc-svn/uclibc_mathc99.patch b/packages/uclibc/uclibc-svn/uclibc_mathc99.patch
new file mode 100644
index 0000000000..6fbb11af6b
--- /dev/null
+++ b/packages/uclibc/uclibc-svn/uclibc_mathc99.patch
@@ -0,0 +1,270 @@
+Index: uClibc/test/math/libm-test.inc
+===================================================================
+--- uClibc.orig/test/math/libm-test.inc	2008-07-25 11:03:24.000000000 +0200
++++ uClibc/test/math/libm-test.inc	2008-08-28 10:54:29.714525665 +0200
+@@ -3414,7 +3414,6 @@
+ }
+ 
+ 
+-#if 0
+ static void
+ log2_test (void)
+ {
+@@ -3444,7 +3443,6 @@
+ 
+   END (log2);
+ }
+-#endif
+ 
+ 
+ static void
+@@ -4967,9 +4965,7 @@
+   log_test ();
+   log10_test ();
+   log1p_test ();
+-#if 0
+   log2_test ();
+-#endif
+   logb_test ();
+   modf_test ();
+   ilogb_test ();
+Index: uClibc/libm/Makefile.in
+===================================================================
+--- uClibc.orig/libm/Makefile.in	2008-07-25 11:03:27.000000000 +0200
++++ uClibc/libm/Makefile.in	2008-08-28 10:54:29.714525665 +0200
+@@ -62,7 +62,7 @@
+ libm_CSRC := \
+ 	e_acos.c e_acosh.c e_asin.c e_atan2.c e_atanh.c e_cosh.c \
+ 	e_exp.c e_fmod.c e_gamma.c e_gamma_r.c e_hypot.c e_j0.c \
+-	e_j1.c e_jn.c e_lgamma.c e_lgamma_r.c e_log.c e_log10.c \
++	e_j1.c e_jn.c e_lgamma.c e_lgamma_r.c e_log.c e_log2.c e_log10.c \
+ 	e_pow.c e_remainder.c e_rem_pio2.c e_scalb.c e_sinh.c \
+ 	e_sqrt.c k_cos.c k_rem_pio2.c k_sin.c k_standard.c k_tan.c \
+ 	s_asinh.c s_atan.c s_cbrt.c s_ceil.c s_copysign.c s_cos.c \
+@@ -73,7 +73,7 @@
+ 	s_tanh.c s_trunc.c w_acos.c w_acosh.c w_asin.c w_atan2.c w_atanh.c \
+ 	w_cabs.c w_cosh.c w_drem.c w_exp.c w_fmod.c w_gamma.c w_gamma_r.c \
+ 	w_hypot.c w_j0.c w_j1.c w_jn.c w_lgamma.c w_lgamma_r.c \
+-	w_log.c w_log10.c w_pow.c w_remainder.c w_scalb.c w_sinh.c \
++	w_log.c w_log2.c w_log10.c w_pow.c w_remainder.c w_scalb.c w_sinh.c \
+ 	w_sqrt.c fpmacros.c nan.c carg.c s_llrint.c
+ FL_MOBJ := \
+ 	acosf.o acoshf.o asinf.o asinhf.o atan2f.o atanf.o atanhf.o cbrtf.o \
+@@ -89,10 +89,10 @@
+ libm_CSRC := \
+ 	w_acos.c w_asin.c s_atan.c w_atan2.c s_ceil.c s_cos.c \
+ 	w_cosh.c w_exp.c s_fabs.c s_floor.c w_fmod.c s_frexp.c \
+-	s_ldexp.c w_log.c w_log10.c s_modf.c w_pow.c s_sin.c \
++	s_ldexp.c w_log.c w_log2.c w_log10.c s_modf.c w_pow.c s_sin.c \
+ 	w_sinh.c w_sqrt.c s_tan.c s_tanh.c \
+ 	s_expm1.c s_scalbn.c s_copysign.c e_acos.c e_asin.c e_atan2.c \
+-	k_cos.c e_cosh.c e_exp.c e_fmod.c e_log.c e_log10.c e_pow.c \
++	k_cos.c e_cosh.c e_exp.c e_fmod.c e_log.c e_log2.c e_log10.c e_pow.c \
+ 	k_sin.c e_sinh.c e_sqrt.c k_tan.c e_rem_pio2.c k_rem_pio2.c \
+ 	s_finite.c
+ # We'll add sqrtf to avoid problems with libstdc++
+Index: uClibc/libm/w_log2.c
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ uClibc/libm/w_log2.c	2008-08-28 10:58:48.676013259 +0200
+@@ -0,0 +1,33 @@
++/*
++ * wrapper log2(X)
++ */
++
++#include "math.h"
++#include "math_private.h"
++
++libm_hidden_proto(log2)
++#ifdef __STDC__
++	double log2(double x)		/* wrapper log */
++#else
++	double log2(x)			/* wrapper log */
++	double x;
++#endif
++{
++#ifdef _IEEE_LIBM
++  return __ieee754_log2 (x);
++#else
++  double z;
++  z = __ieee754_log2 (x);
++  if (_LIB_VERSION == _IEEE_ || __isnan (x)) return z;
++  if (x <= 0.0)
++    {
++      if (x == 0.0)
++	return __kernel_standard (x, x, 48); /* log2 (0) */
++      else
++	return __kernel_standard (x, x, 49); /* log2 (x < 0) */
++    }
++  else
++    return z;
++#endif
++}
++libm_hidden_def(log2)
+Index: uClibc/libm/e_log2.c
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ uClibc/libm/e_log2.c	2008-08-28 10:54:29.717859030 +0200
+@@ -0,0 +1,130 @@
++/* Adapted for log2 by Ulrich Drepper <drepper@cygnus.com>.  */
++/*
++ * ====================================================
++ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
++ *
++ * Developed at SunPro, a Sun Microsystems, Inc. business.
++ * Permission to use, copy, modify, and distribute this
++ * software is freely granted, provided that this notice
++ * is preserved.
++ * ====================================================
++ */
++
++/* __ieee754_log2(x)
++ * Return the logarithm to base 2 of x
++ *
++ * Method :
++ *   1. Argument Reduction: find k and f such that
++ *			x = 2^k * (1+f),
++ *	   where  sqrt(2)/2 < 1+f < sqrt(2) .
++ *
++ *   2. Approximation of log(1+f).
++ *	Let s = f/(2+f) ; based on log(1+f) = log(1+s) - log(1-s)
++ *		 = 2s + 2/3 s**3 + 2/5 s**5 + .....,
++ *	     	 = 2s + s*R
++ *      We use a special Reme algorithm on [0,0.1716] to generate
++ * 	a polynomial of degree 14 to approximate R The maximum error
++ *	of this polynomial approximation is bounded by 2**-58.45. In
++ *	other words,
++ *		        2      4      6      8      10      12      14
++ *	    R(z) ~ Lg1*s +Lg2*s +Lg3*s +Lg4*s +Lg5*s  +Lg6*s  +Lg7*s
++ *  	(the values of Lg1 to Lg7 are listed in the program)
++ *	and
++ *	    |      2          14          |     -58.45
++ *	    | Lg1*s +...+Lg7*s    -  R(z) | <= 2
++ *	    |                             |
++ *	Note that 2s = f - s*f = f - hfsq + s*hfsq, where hfsq = f*f/2.
++ *	In order to guarantee error in log below 1ulp, we compute log
++ *	by
++ *		log(1+f) = f - s*(f - R)	(if f is not too large)
++ *		log(1+f) = f - (hfsq - s*(hfsq+R)).	(better accuracy)
++ *
++ *	3. Finally,  log(x) = k + log(1+f).
++ *			    = k+(f-(hfsq-(s*(hfsq+R))))
++ *
++ * Special cases:
++ *	log2(x) is NaN with signal if x < 0 (including -INF) ;
++ *	log2(+INF) is +INF; log(0) is -INF with signal;
++ *	log2(NaN) is that NaN with no signal.
++ *
++ * Constants:
++ * The hexadecimal values are the intended ones for the following
++ * constants. The decimal values may be used, provided that the
++ * compiler will convert from decimal to binary accurately enough
++ * to produce the hexadecimal values shown.
++ */
++
++#include "math.h"
++#include "math_private.h"
++
++#ifdef __STDC__
++static const double
++#else
++static double
++#endif
++ln2 = 0.69314718055994530942,
++two54   =  1.80143985094819840000e+16,  /* 43500000 00000000 */
++Lg1 = 6.666666666666735130e-01,  /* 3FE55555 55555593 */
++Lg2 = 3.999999999940941908e-01,  /* 3FD99999 9997FA04 */
++Lg3 = 2.857142874366239149e-01,  /* 3FD24924 94229359 */
++Lg4 = 2.222219843214978396e-01,  /* 3FCC71C5 1D8E78AF */
++Lg5 = 1.818357216161805012e-01,  /* 3FC74664 96CB03DE */
++Lg6 = 1.531383769920937332e-01,  /* 3FC39A09 D078C69F */
++Lg7 = 1.479819860511658591e-01;  /* 3FC2F112 DF3E5244 */
++
++#ifdef __STDC__
++static const double zero   =  0.0;
++#else
++static double zero   =  0.0;
++#endif
++
++#ifdef __STDC__
++	double attribute_hidden __ieee754_log2(double x)
++#else
++	double attribute_hidden __ieee754_log2(x)
++	double x;
++#endif
++{
++	double hfsq,f,s,z,R,w,t1,t2,dk;
++	int32_t k,hx,i,j;
++	u_int32_t lx;
++
++	EXTRACT_WORDS(hx,lx,x);
++
++	k=0;
++	if (hx < 0x00100000) {			/* x < 2**-1022  */
++	    if (((hx&0x7fffffff)|lx)==0)
++		return -two54/(x-x);		/* log(+-0)=-inf */
++	    if (hx<0) return (x-x)/(x-x);	/* log(-#) = NaN */
++	    k -= 54; x *= two54; /* subnormal number, scale up x */
++	    GET_HIGH_WORD(hx,x);
++	}
++	if (hx >= 0x7ff00000) return x+x;
++	k += (hx>>20)-1023;
++	hx &= 0x000fffff;
++	i = (hx+0x95f64)&0x100000;
++	SET_HIGH_WORD(x,hx|(i^0x3ff00000));	/* normalize x or x/2 */
++	k += (i>>20);
++	dk = (double) k;
++	f = x-1.0;
++	if((0x000fffff&(2+hx))<3) {	/* |f| < 2**-20 */
++	    if(f==zero) return dk;
++	    R = f*f*(0.5-0.33333333333333333*f);
++	    return dk-(R-f)/ln2;
++	}
++ 	s = f/(2.0+f);
++	z = s*s;
++	i = hx-0x6147a;
++	w = z*z;
++	j = 0x6b851-hx;
++	t1= w*(Lg2+w*(Lg4+w*Lg6));
++	t2= z*(Lg1+w*(Lg3+w*(Lg5+w*Lg7)));
++	i |= j;
++	R = t2+t1;
++	if(i>0) {
++	    hfsq=0.5*f*f;
++	    return dk-((hfsq-(s*(hfsq+R)))-f)/ln2;
++	} else {
++	    return dk-((s*(f-R))-f)/ln2;
++	}
++}
+Index: uClibc/libm/math_private.h
+===================================================================
+--- uClibc.orig/libm/math_private.h	2008-05-07 00:23:27.000000000 +0200
++++ uClibc/libm/math_private.h	2008-08-28 10:54:29.717859030 +0200
+@@ -158,6 +158,7 @@
+ extern double __ieee754_acos (double) attribute_hidden;
+ extern double __ieee754_acosh (double) attribute_hidden;
+ extern double __ieee754_log (double) attribute_hidden;
++extern double __ieee754_log2 (double) attribute_hidden;
+ extern double __ieee754_atanh (double) attribute_hidden;
+ extern double __ieee754_asin (double) attribute_hidden;
+ extern double __ieee754_atan2 (double,double) attribute_hidden;
+Index: uClibc/libm/float_wrappers.c
+===================================================================
+--- uClibc.orig/libm/float_wrappers.c	2008-05-07 00:23:27.000000000 +0200
++++ uClibc/libm/float_wrappers.c	2008-08-28 10:54:29.717859030 +0200
+@@ -20,7 +20,6 @@
+ #undef L_fmaf          /*float       fmaf(float, float, float);*/
+ #undef L_fmaxf         /*float       fmaxf(float, float);*/
+ #undef L_fminf         /*float       fminf(float, float);*/
+-#undef L_log2f         /*float       log2f(float);*/
+ #undef L_nearbyintf    /*float       nearbyintf(float);*/
+ #undef L_nexttowardf   /*float       nexttowardf(float, long double);*/
+ #undef L_remquof       /*float       remquof(float, float, int *);*/
+@@ -55,6 +54,7 @@
+ float       lgammaf(float);
+ long long   llroundf(float);
+ float       log10f(float);
++float       log2f(float);
+ float       log1pf(float);
+ float       logbf(float);
+ float       logf(float);