diff options
Diffstat (limited to 'meta/recipes-support/boost/files/arm-intrinsics.patch')
| -rw-r--r-- | meta/recipes-support/boost/files/arm-intrinsics.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/meta/recipes-support/boost/files/arm-intrinsics.patch b/meta/recipes-support/boost/files/arm-intrinsics.patch new file mode 100644 index 0000000000..3f9c620ebe --- /dev/null +++ b/meta/recipes-support/boost/files/arm-intrinsics.patch @@ -0,0 +1,53 @@ +8/17/2010 - rebased to 1.44 by Qing He <qing.he@intel.com> + +diff --git a/boost/smart_ptr/detail/atomic_count_sync.hpp b/boost/smart_ptr/detail/atomic_count_sync.hpp +index b6359b5..78b1cc2 100644 +--- a/boost/smart_ptr/detail/atomic_count_sync.hpp ++++ b/boost/smart_ptr/detail/atomic_count_sync.hpp +@@ -33,17 +33,46 @@ public: + + long operator++() + { ++#ifdef __ARM_ARCH_7A__ ++ int v1, tmp; ++ asm volatile ("1: \n\t" ++ "ldrex %0, %1 \n\t" ++ "add %0 ,%0, #1 \n\t" ++ "strex %2, %0, %1 \n\t" ++ "cmp %2, #0 \n\t" ++ "bne 1b \n\t" ++ : "=&r" (v1), "+Q"(value_), "=&r"(tmp) ++ ); ++#else + return __sync_add_and_fetch( &value_, 1 ); ++#endif + } + + long operator--() + { ++#ifdef __ARM_ARCH_7A__ ++ int v1, tmp; ++ asm volatile ("1: \n\t" ++ "ldrex %0, %1 \n\t" ++ "sub %0 ,%0, #1 \n\t" ++ "strex %2, %0, %1 \n\t" ++ "cmp %2, #0 \n\t" ++ "bne 1b \n\t" ++ : "=&r" (v1), "+Q"(value_), "=&r"(tmp) ++ ); ++ return value_; ++#else + return __sync_add_and_fetch( &value_, -1 ); ++#endif + } + + operator long() const + { ++#if __ARM_ARCH_7A__ ++ return value_; ++#else + return __sync_fetch_and_add( &value_, 0 ); ++#endif + } + + private: |