diff options
Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/gcc_arm_fenced_block.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/asio/detail/gcc_arm_fenced_block.hpp | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/gcc_arm_fenced_block.hpp b/3rdParty/Boost/src/boost/asio/detail/gcc_arm_fenced_block.hpp index 58cdfb4..1b3c764 100644 --- a/3rdParty/Boost/src/boost/asio/detail/gcc_arm_fenced_block.hpp +++ b/3rdParty/Boost/src/boost/asio/detail/gcc_arm_fenced_block.hpp @@ -2,7 +2,7 @@ // detail/gcc_arm_fenced_block.hpp // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // -// Copyright (c) 2003-2011 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// Copyright (c) 2003-2012 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) @@ -29,8 +29,16 @@ class gcc_arm_fenced_block : private noncopyable { public: - // Constructor. - gcc_arm_fenced_block() + enum half_t { half }; + enum full_t { full }; + + // Constructor for a half fenced block. + explicit gcc_arm_fenced_block(half_t) + { + } + + // Constructor for a full fenced block. + explicit gcc_arm_fenced_block(full_t) { barrier(); } @@ -57,9 +65,14 @@ private: || defined(__ARM_ARCH_6Z__) \ || defined(__ARM_ARCH_6ZK__) \ || defined(__ARM_ARCH_6T2__) +# if defined(__thumb__) + // This is just a placeholder and almost certainly not sufficient. + __asm__ __volatile__ ("" : : : "memory"); +# else // defined(__thumb__) int a = 0, b = 0; __asm__ __volatile__ ("swp %0, %1, [%2]" : "=&r"(a) : "r"(1), "r"(&b) : "memory", "cc"); +# endif // defined(__thumb__) #else // ARMv7 and later. __asm__ __volatile__ ("dmb" : : : "memory"); |