1 files changed, 73 insertions, 0 deletions
diff --git a/tools/depends/target/boost/add-arm-mem-barrier.patch b/tools/depends/target/boost/add-arm-mem-barrier.patch
new file mode 100644
index 0000000000..86f8985ee2
--- /dev/null
+++ b/tools/depends/target/boost/add-arm-mem-barrier.patch
@@ -0,0 +1,73 @@
+From c87ad09331d239d6566e5eb409898ae38f04799a Mon Sep 17 00:00:00 2001
+From: Peter Dimov <pdimov@boostpro.com>
+Date: Mon, 7 Nov 2011 17:50:31 +0000
+Subject: [PATCH] Add ARM memory barriers. Refs #5372.
+
+SVN-Revision: 75389
+---
+ boost/smart_ptr/detail/spinlock_gcc_arm.hpp |   23 ++++++++++++++++++++---
+ 1 file changed, 20 insertions(+), 3 deletions(-)
+
+diff --git a/boost/smart_ptr/detail/spinlock_gcc_arm.hpp b/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
+index ba6c511..f58ea44 100644
+--- a/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
++++ b/boost/smart_ptr/detail/spinlock_gcc_arm.hpp
+@@ -2,7 +2,7 @@
+ #define BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+ 
+ //
+-//  Copyright (c) 2008 Peter Dimov
++//  Copyright (c) 2008, 2011 Peter Dimov
+ //
+ //  Distributed under the Boost Software License, Version 1.0.
+ //  See accompanying file LICENSE_1_0.txt or copy at
+@@ -11,6 +11,20 @@
+ 
+ #include <boost/smart_ptr/detail/yield_k.hpp>
+ 
++#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7EM__)
++
++# define BOOST_SP_ARM_BARRIER "dmb"
++
++#elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__)
++
++# define BOOST_SP_ARM_BARRIER "mcr p15, 0, r0, c7, c10, 5"
++
++#else
++
++# define BOOST_SP_ARM_BARRIER ""
++
++#endif
++
+ namespace boost
+ {
+ 
+@@ -30,7 +44,8 @@ class spinlock
+         int r;
+ 
+         __asm__ __volatile__(
+-            "swp %0, %1, [%2]":
++            "swp %0, %1, [%2]\n\t"
++			BOOST_SP_ARM_BARRIER :
+             "=&r"( r ): // outputs
+             "r"( 1 ), "r"( &v_ ): // inputs
+             "memory", "cc" );
+@@ -48,7 +63,7 @@ class spinlock
+ 
+     void unlock()
+     {
+-        __asm__ __volatile__( "" ::: "memory" );
++        __asm__ __volatile__( BOOST_SP_ARM_BARRIER ::: "memory" );
+         *const_cast< int volatile* >( &v_ ) = 0;
+     }
+ 
+@@ -82,4 +97,6 @@ class spinlock
+ 
+ #define BOOST_DETAIL_SPINLOCK_INIT {0}
+ 
++#undef BOOST_SP_ARM_BARRIER
++
+ #endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_GCC_ARM_HPP_INCLUDED
+-- 
+1.7.10
+