| Upstream-Status: Backport |
| |
| 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: |