add support for xtensa architecture, tested with qemu. thanks to Max Filippov for help

2 files changed, 3724 insertions, 32 deletions

diff --git a/toolchain/uclibc/patches/uclibc-git-20140602.patch b/toolchain/uclibc/patches/uclibc-git-20140613.patch
index 28b5f0c82..725bf8cda 100644
--- a/toolchain/uclibc/patches/uclibc-git-20140602.patch
+++ b/toolchain/uclibc/patches/uclibc-git-20140613.patch
@@ -33284,8 +33284,16 @@ diff -Nur uClibc-0.9.33.2/ldso/ldso/arm/aeabi_read_tp.S uClibc-git/ldso/ldso/arm
  
 diff -Nur uClibc-0.9.33.2/ldso/ldso/arm/dl-startup.h uClibc-git/ldso/ldso/arm/dl-startup.h
 --- uClibc-0.9.33.2/ldso/ldso/arm/dl-startup.h	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/ldso/ldso/arm/dl-startup.h	2014-06-02 17:40:33.926711497 +0200
-@@ -14,6 +14,7 @@
++++ uClibc-git/ldso/ldso/arm/dl-startup.h	2014-06-13 18:29:20.810293291 +0200
+@@ -7,13 +7,14 @@
+  */
+ 
+ #include <features.h>
+-#include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ #if !defined(__thumb__)
+ __asm__(
      "	.text\n"
      "	.globl	_start\n"
      "	.type	_start,%function\n"
@@ -33325,8 +33333,16 @@ diff -Nur uClibc-0.9.33.2/ldso/ldso/arm/elfinterp.c uClibc-git/ldso/ldso/arm/elf
  		{
 diff -Nur uClibc-0.9.33.2/ldso/ldso/arm/resolve.S uClibc-git/ldso/ldso/arm/resolve.S
 --- uClibc-0.9.33.2/ldso/ldso/arm/resolve.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/ldso/ldso/arm/resolve.S	2014-06-02 17:40:33.926711497 +0200
-@@ -101,7 +101,7 @@
++++ uClibc-git/ldso/ldso/arm/resolve.S	2014-06-13 18:29:20.834293397 +0200
+@@ -92,6 +92,7 @@
+ 
+ #include <sys/syscall.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ #include <features.h>
+ 
+@@ -101,7 +102,7 @@
  
   .text
   .align 4      @ 16 byte boundary and there are 32 bytes below (arm case)
@@ -47267,10 +47283,32 @@ diff -Nur uClibc-0.9.33.2/libc/string/arc/strlen.S uClibc-git/libc/string/arc/st
 +	sub_s.ne r1,r1,r1
 +END(strlen)
 +libc_hidden_def(strlen)
+diff -Nur uClibc-0.9.33.2/libc/string/arm/memcmp.S uClibc-git/libc/string/arm/memcmp.S
+--- uClibc-0.9.33.2/libc/string/arm/memcmp.S	2012-05-15 09:20:09.000000000 +0200
++++ uClibc-git/libc/string/arm/memcmp.S	2014-06-13 18:29:20.834293397 +0200
+@@ -31,6 +31,7 @@
+ 
+ #include <features.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ .text
+ .global memcmp
+diff -Nur uClibc-0.9.33.2/libc/string/arm/_memcpy.S uClibc-git/libc/string/arm/_memcpy.S
+--- uClibc-0.9.33.2/libc/string/arm/_memcpy.S	2012-05-15 09:20:09.000000000 +0200
++++ uClibc-git/libc/string/arm/_memcpy.S	2014-06-13 18:29:20.834293397 +0200
+@@ -40,6 +40,7 @@
+ #include <features.h>
+ #include <endian.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ #if !defined(THUMB1_ONLY)
+ /*
 diff -Nur uClibc-0.9.33.2/libc/string/arm/memset.S uClibc-git/libc/string/arm/memset.S
 --- uClibc-0.9.33.2/libc/string/arm/memset.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/string/arm/memset.S	2014-06-02 17:40:34.182712914 +0200
-@@ -13,9 +13,8 @@
++++ uClibc-git/libc/string/arm/memset.S	2014-06-13 18:29:20.834293397 +0200
+@@ -13,13 +13,13 @@
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
@@ -47282,10 +47320,26 @@ diff -Nur uClibc-0.9.33.2/libc/string/arm/memset.S uClibc-git/libc/string/arm/me
  
  #include <features.h>
  #include <sys/syscall.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ .text
+ .global memset
+diff -Nur uClibc-0.9.33.2/libc/string/arm/strcmp.S uClibc-git/libc/string/arm/strcmp.S
+--- uClibc-0.9.33.2/libc/string/arm/strcmp.S	2012-05-15 09:20:09.000000000 +0200
++++ uClibc-git/libc/string/arm/strcmp.S	2014-06-13 18:29:20.838293415 +0200
+@@ -31,6 +31,7 @@
+ 
+ #include <features.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ .text
+ .global strcmp
 diff -Nur uClibc-0.9.33.2/libc/string/arm/strlen.S uClibc-git/libc/string/arm/strlen.S
 --- uClibc-0.9.33.2/libc/string/arm/strlen.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/string/arm/strlen.S	2014-06-02 17:40:34.182712914 +0200
-@@ -13,9 +13,8 @@
++++ uClibc-git/libc/string/arm/strlen.S	2014-06-13 18:29:20.838293415 +0200
+@@ -13,14 +13,14 @@
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
@@ -47297,6 +47351,12 @@ diff -Nur uClibc-0.9.33.2/libc/string/arm/strlen.S uClibc-git/libc/string/arm/st
  
  #include <features.h>
  #include <endian.h>
+ #include <sys/syscall.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ /* size_t strlen(const char *S)
+  * entry: r0 -> string
 diff -Nur uClibc-0.9.33.2/libc/string/avr32/Makefile uClibc-git/libc/string/avr32/Makefile
 --- uClibc-0.9.33.2/libc/string/avr32/Makefile	2012-05-15 09:20:09.000000000 +0200
 +++ uClibc-git/libc/string/avr32/Makefile	2014-06-02 17:40:34.182712914 +0200
@@ -53640,7 +53700,7 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/aeabi_unwind_cpp_pr1.c uClibc-g
     -fexceptions, we end up with references to this personality
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/bits/arm_asm.h uClibc-git/libc/sysdeps/linux/arm/bits/arm_asm.h
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/bits/arm_asm.h	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/arm/bits/arm_asm.h	2014-06-02 17:40:34.282713468 +0200
++++ uClibc-git/libc/sysdeps/linux/arm/bits/arm_asm.h	2014-06-13 18:29:20.838293415 +0200
 @@ -3,8 +3,10 @@
  #define _ARM_ASM_H
  
@@ -53652,6 +53712,57 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/bits/arm_asm.h uClibc-git/libc/
  #define IT(t, cond) i##t cond
  #else
  /* XXX: This can be removed if/when we require an assembler that supports
+@@ -24,12 +26,4 @@
+ #define THUMB1_ONLY 1
+ #endif
+ 
+-#if defined(__USE_BX__)
+-# if (   defined (__ARM_ARCH_2__)  || defined (__ARM_ARCH_3__) \
+-      || defined (__ARM_ARCH_3M__) || defined (__ARM_ARCH_4__) \
+-     )
+-#  error Use of BX was requested, but is not available on the target processor.
+-# endif /* ARCH level */
+-#endif /* __USE_BX__ */
+-
+ #endif /* _ARM_ASM_H */
+diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/bits/arm_bx.h uClibc-git/libc/sysdeps/linux/arm/bits/arm_bx.h
+--- uClibc-0.9.33.2/libc/sysdeps/linux/arm/bits/arm_bx.h	1970-01-01 01:00:00.000000000 +0100
++++ uClibc-git/libc/sysdeps/linux/arm/bits/arm_bx.h	2014-06-13 18:29:20.838293415 +0200
+@@ -0,0 +1,34 @@
++/* Copyright (C) 2013 Yann E. MORIN <yann.morin.1998@free.fr>
++ *
++ * This file 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.
++ *
++ * This file 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/>.
++ */
++
++#ifndef _ARM_BX_H
++#define _ARM_BX_H
++
++/* We need features.h first */
++#if !defined _FEATURES_H
++#error Please include features.h first
++#endif /* features.h not yet included */
++
++#if defined(__USE_BX__)
++# if (   defined (__ARM_ARCH_2__)  || defined (__ARM_ARCH_3__) \
++      || defined (__ARM_ARCH_3M__) || defined (__ARM_ARCH_4__) \
++     )
++#  error Use of BX was requested, but is not available on the target processor.
++# endif /* ARCH level */
++#endif /* __USE_BX__ */
++
++#endif /* _ARM_BX_H */
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/bits/armsigctx.h uClibc-git/libc/sysdeps/linux/arm/bits/armsigctx.h
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/bits/armsigctx.h	2012-05-15 09:20:09.000000000 +0200
 +++ uClibc-git/libc/sysdeps/linux/arm/bits/armsigctx.h	2014-06-02 17:40:34.282713468 +0200
@@ -53947,7 +54058,7 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/bsd-_setjmp.S uClibc-git/libc/s
  
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/clone.S uClibc-git/libc/sysdeps/linux/arm/clone.S
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/clone.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/arm/clone.S	2014-06-02 17:40:34.306713601 +0200
++++ uClibc-git/libc/sysdeps/linux/arm/clone.S	2014-06-13 18:29:20.838293415 +0200
 @@ -13,9 +13,8 @@
     Lesser General Public License for more details.
  
@@ -53960,11 +54071,20 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/clone.S uClibc-git/libc/sysdeps
  
  /* clone() is even more special than fork() as it mucks with stacks
     and invokes a function in the right context after its all over.  */
-@@ -111,8 +110,8 @@
+@@ -25,6 +24,7 @@
+ #include <bits/errno.h>
+ #include <sys/syscall.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ #if defined(__NR_clone)
+ /* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
+@@ -111,8 +111,9 @@
  	ldr	r4, [sp, #12]
  	DO_CALL (clone)
  	movs	a1, a1
 -	blt	__error
++	IT(t, ne)
  	ldmnefd	sp!, {r4}
 +	blt	__error
  	IT(t, ne)
@@ -54191,8 +54311,8 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/jmpbuf-unwind.h uClibc-git/libc
 +#endif
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/__longjmp.S uClibc-git/libc/sysdeps/linux/arm/__longjmp.S
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/__longjmp.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/arm/__longjmp.S	2014-06-02 17:40:34.266713379 +0200
-@@ -13,16 +13,11 @@
++++ uClibc-git/libc/sysdeps/linux/arm/__longjmp.S	2014-06-13 18:29:20.838293415 +0200
+@@ -13,16 +13,12 @@
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
@@ -54208,6 +54328,7 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/__longjmp.S uClibc-git/libc/sys
 -#define _ASM
 -#include <bits/setjmp.h>
 -
++#include <bits/arm_bx.h>
  
  .global __longjmp
  .type __longjmp,%function
@@ -54362,8 +54483,8 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/Makefile.arch uClibc-git/libc/s
 +	)
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/mmap64.S uClibc-git/libc/sysdeps/linux/arm/mmap64.S
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/mmap64.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/arm/mmap64.S	2014-06-02 17:40:34.306713601 +0200
-@@ -12,17 +12,16 @@
++++ uClibc-git/libc/sysdeps/linux/arm/mmap64.S	2014-06-13 18:29:20.838293415 +0200
+@@ -12,17 +12,17 @@
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
@@ -54379,6 +54500,7 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/mmap64.S uClibc-git/libc/sysdep
  #include <bits/errno.h>
  #include <sys/syscall.h>
  #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
  
 -#if defined __UCLIBC_HAS_LFS__ && defined __NR_mmap2
 +#ifdef __NR_mmap2
@@ -54873,8 +54995,8 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/sys/user.h uClibc-git/libc/sysd
  #define _SYS_USER_H	1
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/syscall-eabi.S uClibc-git/libc/sysdeps/linux/arm/syscall-eabi.S
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/syscall-eabi.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/arm/syscall-eabi.S	2014-06-02 17:40:34.310713623 +0200
-@@ -12,9 +12,8 @@
++++ uClibc-git/libc/sysdeps/linux/arm/syscall-eabi.S	2014-06-13 18:29:20.838293415 +0200
+@@ -12,12 +12,12 @@
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
@@ -54886,10 +55008,14 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/syscall-eabi.S uClibc-git/libc/
  
  #include <sys/syscall.h>
  #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ /* In the EABI syscall interface, we don't need a special syscall to
+    implement syscall().  It won't work reliably with 64-bit arguments
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/sysdep.h uClibc-git/libc/sysdeps/linux/arm/sysdep.h
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/sysdep.h	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/arm/sysdep.h	2014-06-02 17:40:34.310713623 +0200
-@@ -13,9 +13,8 @@
++++ uClibc-git/libc/sysdeps/linux/arm/sysdep.h	2014-06-13 18:29:20.838293415 +0200
+@@ -13,15 +13,14 @@
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
@@ -54901,6 +55027,13 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/sysdep.h uClibc-git/libc/sysdep
  
  #ifndef _LINUX_ARM_SYSDEP_H
  #define _LINUX_ARM_SYSDEP_H 1
+ 
+ #include <common/sysdep.h>
+-#include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ #include <sys/syscall.h>
+ /* For Linux we can use the system call table in the header file
 @@ -157,6 +156,7 @@
  #define	PSEUDO_END_ERRVAL(name) \
    END (name)
@@ -54969,8 +55102,16 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/unwind.h uClibc-git/libc/sysdep
     ABI defined objects, and GNU support routines.  */
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/arm/vfork.S uClibc-git/libc/sysdeps/linux/arm/vfork.S
 --- uClibc-0.9.33.2/libc/sysdeps/linux/arm/vfork.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/arm/vfork.S	2014-06-02 17:40:34.310713623 +0200
-@@ -104,5 +104,5 @@
++++ uClibc-git/libc/sysdeps/linux/arm/vfork.S	2014-06-13 18:29:20.838293415 +0200
+@@ -7,6 +7,7 @@
+ 
+ #include <features.h>
+ #include <bits/arm_asm.h>
++#include <bits/arm_bx.h>
+ 
+ #define _ERRNO_H
+ #include <bits/errno.h>
+@@ -104,5 +105,5 @@
  .size __vfork,.-__vfork
  
  weak_alias(__vfork,vfork)
@@ -83209,7 +83350,7 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/setjmp.S uClibc-git/libc/sys
  .type   __sigsetjmp,%function
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/sigaction.c uClibc-git/libc/sysdeps/linux/x86_64/sigaction.c
 --- uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/sigaction.c	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libc/sysdeps/linux/x86_64/sigaction.c	2014-06-02 17:40:34.686715704 +0200
++++ uClibc-git/libc/sysdeps/linux/x86_64/sigaction.c	2014-06-13 18:29:20.838293415 +0200
 @@ -13,9 +13,8 @@
     Lesser General Public License for more details.
  
@@ -83232,6 +83373,27 @@ diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/sigaction.c uClibc-git/libc/
  #ifdef __NR_rt_sigaction
  
  /* Using the hidden attribute here does not change the code but it
+@@ -115,11 +111,19 @@
+    signal handlers work right.  Important are both the names
+    (__restore_rt) and the exact instruction sequence.
+    If you ever feel the need to make any changes, please notify the
+-   appropriate GDB maintainer.  */
++   appropriate GDB maintainer.
++
++   The unwind information starts a byte before __restore_rt, so that
++   it is found when unwinding, to get an address the unwinder assumes
++   will be in the middle of a call instruction.  See the Linux kernel
++   (the i386 vsyscall, in particular) for an explanation of the complex
++   unwind information used here in order to get the traditional CFA.
++ */
+ 
+ #define RESTORE(name, syscall) RESTORE2(name, syscall)
+ #define RESTORE2(name, syscall) \
+ __asm__ (						\
++	"nop\n"						\
+ 	".text\n"					\
+ 	"__" #name ":\n"				\
+ 	"	movq	$" #syscall ", %rax\n"		\
 diff -Nur uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/__start_context.S uClibc-git/libc/sysdeps/linux/x86_64/__start_context.S
 --- uClibc-0.9.33.2/libc/sysdeps/linux/x86_64/__start_context.S	1970-01-01 01:00:00.000000000 +0100
 +++ uClibc-git/libc/sysdeps/linux/x86_64/__start_context.S	2014-06-02 17:40:34.682715682 +0200
@@ -101011,7 +101173,7 @@ diff -Nur uClibc-0.9.33.2/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthr
  #include <lowlevellock.h>
 diff -Nur uClibc-0.9.33.2/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S uClibc-git/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
 --- uClibc-0.9.33.2/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S	2014-06-02 17:40:35.098717984 +0200
++++ uClibc-git/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S	2014-06-13 18:29:20.838293415 +0200
 @@ -13,9 +13,8 @@
     Lesser General Public License for more details.
  
@@ -101024,6 +101186,14 @@ diff -Nur uClibc-0.9.33.2/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthr
  
  #include <sysdep.h>
  #include <lowlevellock.h>
+@@ -23,6 +22,7 @@
+ #include <pthread-errnos.h>
+ #include <pthread-pi-defines.h>
+ #include <bits/kernel-features.h>
++#include <tcb-offsets.h>
+ 
+ 
+ 	.text
 diff -Nur uClibc-0.9.33.2/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S uClibc-git/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
 --- uClibc-0.9.33.2/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S	2012-05-15 09:20:09.000000000 +0200
 +++ uClibc-git/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S	2014-06-02 17:40:35.098717984 +0200
@@ -107277,7 +107447,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.help uClibc-git/Makefile.help
  	@echo '  PREFIX=		- Prepended prefix'
 diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
 --- uClibc-0.9.33.2/Makefile.in	2012-05-15 09:20:09.000000000 +0200
-+++ uClibc-git/Makefile.in	2014-06-02 17:40:33.670710081 +0200
++++ uClibc-git/Makefile.in	2014-06-13 18:29:20.642292552 +0200
 @@ -8,18 +8,8 @@
  #--------------------------------------------------------------
  # You shouldn't need to mess with anything beyond this point...
@@ -107439,7 +107609,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  	DEVEL_PREFIX=/usr/ \
  	HOSTCC="$(HOSTCC)" \
  	install
-@@ -210,16 +225,27 @@
+@@ -210,21 +225,34 @@
  # a "y" here means the feature is enabled and so we should *not* rm it.
  # if the option expands to nothing though, we can punt the headers.
  HEADERS_RM- := \
@@ -107467,7 +107637,14 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  	bits/uClibc_uintmaxtostr.h \
  	bits/uClibc_uwchar.h \
  	bits/uClibc_va_copy.h \
-@@ -259,18 +285,23 @@
+ 	bits/sigcontextinfo.h \
+ 	bits/stackinfo.h \
++	atomic.h \
++	bits/atomic.h \
+ 	tls.h \
+ 	rpc/des_crypt.h \
+ 	rpc/key_prot.h \
+@@ -259,18 +287,23 @@
  HEADERS_RM-$(UCLIBC_HAS_REGEX)               += regex.h regexp.h
  HEADERS_RM-$(UCLIBC_HAS_RPC)                 += rpc
  HEADERS_RM-$(UCLIBC_HAS_SHADOW)              += shadow.h
@@ -107493,7 +107670,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  	bits/inotify.h \
  	sys/inotify.h \
  	sys/kdaemon.h \
-@@ -288,11 +319,13 @@
+@@ -288,11 +321,13 @@
  	sys/sysinfo.h \
  	bits/timerfd.h \
  	sys/timerfd.h \
@@ -107507,7 +107684,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  
  ifneq ($(findstring install,$(MAKECMDGOALS)),)
  $(addprefix $(PREFIX)$(DEVEL_PREFIX),include $(MULTILIB_DIR)):
-@@ -303,7 +336,9 @@
+@@ -303,7 +338,9 @@
  	$(do_mkdir)
  endif
  endif
@@ -107518,7 +107695,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  	@$(call disp_install,"include -> $(PREFIX)$(DEVEL_PREFIX)include")
  	$(Q)top_builddir=$(top_builddir) \
  	$(top_srcdir)extra/scripts/install_headers.sh \
-@@ -346,12 +381,7 @@
+@@ -346,12 +383,7 @@
  else
  	-$(INSTALL) -m 755 $(top_builddir)lib/libc.so $(PREFIX)$(DEVEL_PREFIX)$(MULTILIB_DIR)/
  endif
@@ -107532,7 +107709,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  ifeq ($(UCLIBC_HAS_THREADS),y)
  ifneq ($(LINUXTHREADS_OLD),y)
  ifeq ($(HARDWIRED_ABSPATH),y)
-@@ -422,49 +452,55 @@
+@@ -422,49 +454,55 @@
  install_hostutils: hostutils
  	$(Q)$(MAKE) CROSS_COMPILE="$(CROSS_COMPILE)" CC="$(CC)" HOSTCC="$(HOSTCC)" DOTHOST=.host -C utils utils_install
  
@@ -107611,7 +107788,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  
  menuconfig-clean-y:
  	$(Q)$(MAKE) -C extra/config CLEAN_extra/config
-@@ -484,11 +520,11 @@
+@@ -484,11 +522,11 @@
  	$(Q)$(RM) $(top_builddir)extra/scripts/unifdef
  	$(Q)$(RM) -r $(LOCAL_INSTALL_PATH)
  
@@ -107626,7 +107803,7 @@ diff -Nur uClibc-0.9.33.2/Makefile.in uClibc-git/Makefile.in
  
  dist release:
  	$(RM) ../uClibc-$(VERSION).tar
-@@ -499,7 +535,9 @@
+@@ -499,7 +537,9 @@
  	du -b ../uClibc-$(VERSION).tar.{bz2,xz}
  
  test check: test_compile
diff --git a/toolchain/uclibc/patches/xxx-xtensa-nptl.patch b/toolchain/uclibc/patches/xxx-xtensa-nptl.patch
new file mode 100644
index 000000000..16241e161
--- /dev/null
+++ b/toolchain/uclibc/patches/xxx-xtensa-nptl.patch
@@ -0,0 +1,3515 @@
+diff -Nur uClibc-git/include/elf.h uClibc-xtensa/include/elf.h
+--- uClibc-git/include/elf.h	2014-06-02 17:40:33.826710944 +0200
++++ uClibc-xtensa/include/elf.h	2014-06-03 16:03:19.065886532 +0200
+@@ -3072,8 +3071,11 @@
+ #define R_XTENSA_SLOT12_ALT	47
+ #define R_XTENSA_SLOT13_ALT	48
+ #define R_XTENSA_SLOT14_ALT	49
++#define R_XTENSA_TLSDESC_FN	50
++#define R_XTENSA_TLSDESC_ARG	51
++#define R_XTENSA_TLS_TPOFF	53
+ /* Keep this the last entry.  */
+-#define R_XTENSA_NUM		50
++#define R_XTENSA_NUM		54
+ 
+ /* C6X specific relocs */
+ #define R_C6000_NONE		0
+diff -Nur uClibc-git/include/link.h uClibc-xtensa/include/link.h
+--- uClibc-git/include/link.h	2014-06-02 17:40:33.846711055 +0200
++++ uClibc-xtensa/include/link.h	2014-06-03 15:28:27.185347373 +0200
+@@ -132,6 +132,8 @@
+     size_t l_tls_modid;
+     /* Nonzero if _dl_init_static_tls should be called for this module */
+     unsigned int l_need_tls_init:1;
++    /* Address of TLS descriptor hash table.  */
++    void *l_tlsdesc_table;
+ #endif
+ #endif
+   };
+diff -Nur uClibc-git/ldso/include/dl-hash.h uClibc-xtensa/ldso/include/dl-hash.h
+--- uClibc-git/ldso/include/dl-hash.h	2014-06-02 17:40:33.902711365 +0200
++++ uClibc-xtensa/ldso/include/dl-hash.h	2014-06-03 15:29:09.505536959 +0200
+@@ -70,6 +70,8 @@
+   size_t l_tls_modid;
+   /* Nonzero if _dl_init_static_tls should be called for this module */
+   unsigned int l_need_tls_init:1;
++  /* Address of TLS descriptor hash table.  */
++  void *l_tlsdesc_table;
+ #endif
+ 
+   ElfW(Addr) mapaddr;
+diff -Nur uClibc-git/ldso/include/inline-hashtab.h uClibc-xtensa/ldso/include/inline-hashtab.h
+--- uClibc-git/ldso/include/inline-hashtab.h	1970-01-01 01:00:00.000000000 +0100
++++ uClibc-xtensa/ldso/include/inline-hashtab.h	2014-06-03 11:57:42.031052092 +0200
+@@ -0,0 +1,265 @@
++/*
++ * The hashcode handling code below is heavily inspired in libiberty's
++ * hashtab code, but with most adaptation points and support for
++ * deleting elements removed.
++ *
++ * Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
++ * Contributed by Vladimir Makarov (vmakarov@cygnus.com).
++ */
++
++#ifndef INLINE_HASHTAB_H
++# define INLINE_HASHTAB_H 1
++
++static __always_inline unsigned long
++higher_prime_number(unsigned long n)
++{
++	/* These are primes that are near, but slightly smaller than, a power of two. */
++	static const unsigned long primes[] = {
++		7,
++		13,
++		31,
++		61,
++		127,
++		251,
++		509,
++		1021,
++		2039,
++		4093,
++		8191,
++		16381,
++		32749,
++		65521,
++		131071,
++		262139,
++		524287,
++		1048573,
++		2097143,
++		4194301,
++		8388593,
++		16777213,
++		33554393,
++		67108859,
++		134217689,
++		268435399,
++		536870909,
++		1073741789,
++		/* 4294967291 */
++		((unsigned long) 2147483647) + ((unsigned long) 2147483644),
++	};
++	const unsigned long *low = &primes[0];
++	const unsigned long *high = &primes[ARRAY_SIZE(primes)];
++
++	while (low != high) {
++		const unsigned long *mid = low + (high - low) / 2;
++		if (n > *mid)
++			low = mid + 1;
++		else
++			high = mid;
++	}
++
++#if 0
++	/* If we've run out of primes, abort.  */
++	if (n > *low) {
++		fprintf(stderr, "Cannot find prime bigger than %lu\n", n);
++		abort();
++	}
++#endif
++
++	return *low;
++}
++
++struct funcdesc_ht
++{
++	/* Table itself */
++	void **entries;
++
++	/* Current size (in entries) of the hash table */
++	size_t size;
++
++	/* Current number of elements */
++	size_t n_elements;
++};
++
++static __always_inline struct funcdesc_ht *
++htab_create(void)
++{
++	struct funcdesc_ht *ht = _dl_malloc(sizeof(*ht));
++	size_t ent_size;
++
++	if (!ht)
++		return NULL;
++	ht->size = 3;
++	ent_size = sizeof(void *) * ht->size;
++	ht->entries = _dl_malloc(ent_size);
++	if (!ht->entries)
++		return NULL;
++
++	ht->n_elements = 0;
++	_dl_memset(ht->entries, 0, ent_size);
++
++	return ht;
++}
++
++/*
++ * This is only called from _dl_loadaddr_unmap, so it's safe to call
++ * _dl_free().  See the discussion below.
++ */
++static __always_inline void
++htab_delete(struct funcdesc_ht *htab)
++{
++	size_t i;
++
++	for (i = htab->size - 1; i >= 0; i--)
++		if (htab->entries[i])
++			_dl_free(htab->entries[i]);
++
++	_dl_free(htab->entries);
++	_dl_free(htab);
++}
++
++/*
++ * Similar to htab_find_slot, but without several unwanted side effects:
++ *  - Does not call htab->eq_f when it finds an existing entry.
++ *  - Does not change the count of elements/searches/collisions in the
++ *    hash table.
++ * This function also assumes there are no deleted entries in the table.
++ * HASH is the hash value for the element to be inserted.
++ */
++static __always_inline void **
++find_empty_slot_for_expand(struct funcdesc_ht *htab, int hash)
++{
++	size_t size = htab->size;
++	unsigned int index = hash % size;
++	void **slot = htab->entries + index;
++	int hash2;
++
++	if (!*slot)
++		return slot;
++
++	hash2 = 1 + hash % (size - 2);
++	for (;;) {
++		index += hash2;
++		if (index >= size)
++			index -= size;
++
++		slot = htab->entries + index;
++		if (!*slot)
++			return slot;
++	}
++}
++
++/*
++ * The following function changes size of memory allocated for the
++ * entries and repeatedly inserts the table elements.  The occupancy
++ * of the table after the call will be about 50%.  Naturally the hash
++ * table must already exist.  Remember also that the place of the
++ * table entries is changed.  If memory allocation failures are allowed,
++ * this function will return zero, indicating that the table could not be
++ * expanded.  If all goes well, it will return a non-zero value.
++ */
++static __always_inline int
++htab_expand(struct funcdesc_ht *htab, int (*hash_fn) (void *))
++{
++	void **oentries;
++	void **olimit;
++	void **p;
++	void **nentries;
++	size_t nsize;
++
++	oentries = htab->entries;
++	olimit = oentries + htab->size;
++
++	/*
++	 * Resize only when table after removal of unused elements is either
++	 * too full or too empty.
++	 */
++	if (htab->n_elements * 2 > htab->size)
++		nsize = higher_prime_number(htab->n_elements * 2);
++	else
++		nsize = htab->size;
++
++	nentries = _dl_malloc(sizeof(*nentries) * nsize);
++	_dl_memset(nentries, 0, sizeof(*nentries) * nsize);
++	if (nentries == NULL)
++		return 0;
++	htab->entries = nentries;
++	htab->size = nsize;
++
++	p = oentries;
++	do {
++		if (*p)
++			*find_empty_slot_for_expand(htab, hash_fn(*p)) = *p;
++		p++;
++	} while (p < olimit);
++
++#if 0
++	/*
++	 * We can't tell whether this was allocated by the _dl_malloc()
++	 * built into ld.so or malloc() in the main executable or libc,
++	 * and calling free() for something that wasn't malloc()ed could
++	 * do Very Bad Things (TM).  Take the conservative approach
++	 * here, potentially wasting as much memory as actually used by
++	 * the hash table, even if multiple growths occur.  That's not
++	 * so bad as to require some overengineered solution that would
++	 * enable us to keep track of how it was allocated.
++	 */
++	_dl_free(oentries);
++#endif
++	return 1;
++}
++
++/*
++ * This function searches for a hash table slot containing an entry
++ * equal to the given element.  To delete an entry, call this with
++ * INSERT = 0, then call htab_clear_slot on the slot returned (possibly
++ * after doing some checks).  To insert an entry, call this with
++ * INSERT = 1, then write the value you want into the returned slot.
++ * When inserting an entry, NULL may be returned if memory allocation
++ * fails.
++ */
++static __always_inline void **
++htab_find_slot(struct funcdesc_ht *htab, void *ptr, int insert,
++	       int (*hash_fn)(void *), int (*eq_fn)(void *, void *))
++{
++	unsigned int index;
++	int hash, hash2;
++	size_t size;
++	void **entry;
++
++	if (htab->size * 3 <= htab->n_elements * 4 &&
++	    htab_expand(htab, hash_fn) == 0)
++		return NULL;
++
++	hash = hash_fn(ptr);
++
++	size = htab->size;
++	index = hash % size;
++
++	entry = &htab->entries[index];
++	if (!*entry)
++		goto empty_entry;
++	else if (eq_fn(*entry, ptr))
++		return entry;
++
++	hash2 = 1 + hash % (size - 2);
++	for (;;) {
++		index += hash2;
++		if (index >= size)
++			index -= size;
++
++		entry = &htab->entries[index];
++		if (!*entry)
++			goto empty_entry;
++		else if (eq_fn(*entry, ptr))
++			return entry;
++	}
++
++ empty_entry:
++	if (!insert)
++		return NULL;
++
++	htab->n_elements++;
++	return entry;
++}
++
++#endif
+diff -Nur uClibc-git/ldso/include/ldsodefs.h uClibc-xtensa/ldso/include/ldsodefs.h
+--- uClibc-git/ldso/include/ldsodefs.h	2014-06-02 17:40:33.922711475 +0200
++++ uClibc-xtensa/ldso/include/ldsodefs.h	2014-06-03 16:10:51.175659505 +0200
+@@ -62,13 +62,18 @@
+ 
+ extern void _dl_allocate_static_tls (struct link_map *map)
+      internal_function attribute_hidden;
++extern int _dl_try_allocate_static_tls (struct link_map* map)
++     internal_function attribute_hidden;
+ 
+ /* Taken from glibc/elf/dl-reloc.c */
+ #define CHECK_STATIC_TLS(sym_map)											\
+ 	do {																	\
+-		if (unlikely((sym_map)->l_tls_offset == NO_TLS_OFFSET))	\
++		if (__builtin_expect ((sym_map)->l_tls_offset == NO_TLS_OFFSET, 0))	\
+ 			_dl_allocate_static_tls (sym_map);								\
+ 	} while (0)
++#define TRY_STATIC_TLS(sym_map)												\
++	(__builtin_expect ((sym_map)->l_tls_offset != NO_TLS_OFFSET, 1)			\
++		 || _dl_try_allocate_static_tls (sym_map) == 0)
+ 
+ /* These are internal entry points to the two halves of _dl_allocate_tls,
+    only used within rtld.c itself at startup time.  */
+diff -Nur uClibc-git/ldso/include/tlsdeschtab.h uClibc-xtensa/ldso/include/tlsdeschtab.h
+--- uClibc-git/ldso/include/tlsdeschtab.h	1970-01-01 01:00:00.000000000 +0100
++++ uClibc-xtensa/ldso/include/tlsdeschtab.h	2014-06-03 14:58:29.681335708 +0200
+@@ -0,0 +1,119 @@
++/* Hash table for TLS descriptors.
++   Copyright (C) 2005-2013 Free Software Foundation, Inc.
++   This file is part of the GNU C Library.
++   Contributed by Alexandre Oliva  <aoliva@redhat.com>
++
++   uClibc port by Baruch Siach <baruch@tkos.co.il>
++
++   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/>.  */
++
++#ifndef TLSDESCHTAB_H
++# define TLSDESCHTAB_H 1
++
++# ifdef SHARED
++
++#  include <inline-hashtab.h>
++
++inline static int
++hash_tlsdesc (void *p)
++{
++  struct tlsdesc_dynamic_arg *td = p;
++
++  /* We know all entries are for the same module, so ti_offset is the
++     only distinguishing entry.  */
++  return td->tlsinfo.ti_offset;
++}
++
++inline static int
++eq_tlsdesc (void *p, void *q)
++{
++  struct tlsdesc_dynamic_arg *tdp = p, *tdq = q;
++
++  return tdp->tlsinfo.ti_offset == tdq->tlsinfo.ti_offset;
++}
++
++inline static int
++map_generation (struct link_map *map)
++{
++  size_t idx = map->l_tls_modid;
++  struct dtv_slotinfo_list *listp = GL(dl_tls_dtv_slotinfo_list);
++
++  /* Find the place in the dtv slotinfo list.  */
++  do
++    {
++      /* Does it fit in the array of this list element?  */
++      if (idx < listp->len)
++	{
++	  /* We should never get here for a module in static TLS, so
++	     we can assume that, if the generation count is zero, we
++	     still haven't determined the generation count for this
++	     module.  */
++	  if (listp->slotinfo[idx].gen)
++	    return listp->slotinfo[idx].gen;
++	  else
++	    break;
++	}
++      idx -= listp->len;
++      listp = listp->next;
++    }
++  while (listp != NULL);
++
++  /* If we get to this point, the module still hasn't been assigned an
++     entry in the dtv slotinfo data structures, and it will when we're
++     done with relocations.  At that point, the module will get a
++     generation number that is one past the current generation, so
++     return exactly that.  */
++  return GL(dl_tls_generation) + 1;
++}
++
++void *
++internal_function
++_dl_make_tlsdesc_dynamic (struct link_map *map, size_t ti_offset)
++{
++  struct funcdesc_ht *ht;
++  void **entry;
++  struct tlsdesc_dynamic_arg *td, test;
++
++  ht = map->l_tlsdesc_table;
++  if (! ht)
++    {
++      ht = htab_create ();
++      if (! ht)
++	  return 0;
++      map->l_tlsdesc_table = ht;
++    }
++
++  test.tlsinfo.ti_module = map->l_tls_modid;
++  test.tlsinfo.ti_offset = ti_offset;
++  entry = htab_find_slot (ht, &test, 1, hash_tlsdesc, eq_tlsdesc);
++  if (*entry)
++    {
++      td = *entry;
++      return td;
++    }
++
++  *entry = td = _dl_malloc (sizeof (struct tlsdesc_dynamic_arg));
++  /* This may be higher than the map's generation, but it doesn't
++     matter much.  Worst case, we'll have one extra DTV update per
++     thread.  */
++  td->gen_count = map_generation (map);
++  td->tlsinfo = test.tlsinfo;
++
++  return td;
++}
++
++# endif /* SHARED */
++
++#endif
+diff -Nur uClibc-git/ldso/ldso/dl-tls.c uClibc-xtensa/ldso/ldso/dl-tls.c
+--- uClibc-git/ldso/ldso/dl-tls.c	2014-06-02 17:40:33.946711608 +0200
++++ uClibc-xtensa/ldso/ldso/dl-tls.c	2014-06-03 16:10:28.547570023 +0200
+@@ -100,20 +100,16 @@
+  * the static TLS area already allocated for each running thread.  If this
+  * object's TLS segment is too big to fit, we fail.  If it fits,
+  * we set MAP->l_tls_offset and return.
+- * This function intentionally does not return any value but signals error
+- * directly, as static TLS should be rare and code handling it should
+- * not be inlined as much as possible.
+  */
+-void
+-internal_function __attribute_noinline__
+-_dl_allocate_static_tls (struct link_map *map)
++int
++internal_function
++_dl_try_allocate_static_tls (struct link_map* map)
+ {
+ 	/* If the alignment requirements are too high fail.  */
+ 	if (map->l_tls_align > _dl_tls_static_align)
+ 	{
+ fail:
+-		_dl_dprintf(2, "cannot allocate memory in static TLS block");
+-		_dl_exit(30);
++		return -1;
+ 	}
+ 
+ # ifdef TLS_TCB_AT_TP
+@@ -169,6 +165,23 @@
+ 	}
+ 	else
+ 		map->l_need_tls_init = 1;
++
++	return 0;
++}
++
++/*
++ * This function intentionally does not return any value but signals error
++ * directly, as static TLS should be rare and code handling it should
++ * not be inlined as much as possible.
++ */
++void
++internal_function __attribute_noinline__
++_dl_allocate_static_tls (struct link_map *map)
++{
++	if (_dl_try_allocate_static_tls (map)) {
++		_dl_dprintf(2, "cannot allocate memory in static TLS block");
++		_dl_exit(30);
++	}
+ }
+ 
+ #ifdef SHARED
+diff -Nur uClibc-git/ldso/ldso/fdpic/dl-inlines.h uClibc-xtensa/ldso/ldso/fdpic/dl-inlines.h
+--- uClibc-git/ldso/ldso/fdpic/dl-inlines.h	2014-06-02 17:40:33.950711630 +0200
++++ uClibc-xtensa/ldso/ldso/fdpic/dl-inlines.h	2014-06-03 11:57:43.263058897 +0200
+@@