src/os_cpu/linux_arm/vm/atomic_linux_arm.hpp

rev 13452 : [mq]: coleen_review1
rev 13458 : imported patch cmpxchg_using_helper

*** 198,207 ****
--- 198,208 ----
    return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
  }
  
  // The memory_order parameter is ignored - we always provide the strongest/most-conservative ordering
  
+ // No direct support for cmpxchg of bytes; emulate using int.
  template<>
  struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {};
  
  #ifndef AARCH64
  
*** 246,256 ****
      : [rv] "=&r" (rv), [tmp] "=&r" (tmp)
      : [ev] "r" (exchange_value), [dest] "r" (dest), [cv] "r" (compare_value)
      : "memory");
    return rv;
  #else
!   return cmpxchg_using_stub<jint>(reorder_cmpxchg_func, exchange_value, dest, compare_value);
  #endif
  }
  
  template<>
  template<typename T>
--- 247,257 ----
      : [rv] "=&r" (rv), [tmp] "=&r" (tmp)
      : [ev] "r" (exchange_value), [dest] "r" (dest), [cv] "r" (compare_value)
      : "memory");
    return rv;
  #else
!   return cmpxchg_using_helper<jint>(reorder_cmpxchg_func, exchange_value, dest, compare_value);
  #endif
  }
  
  template<>
  template<typename T>
*** 276,285 ****
      : [rv] "=&r" (rv), [tmp] "=&r" (tmp)
      : [ev] "r" (exchange_value), [dest] "r" (dest), [cv] "r" (compare_value)
      : "memory");
    return rv;
  #else
!   return cmpxchg_using_stub<jlong>(reorder_cmpxchg_long_func, exchange_value, dest, compare_value);
  #endif
  }
  
  #endif // OS_CPU_LINUX_ARM_VM_ATOMIC_LINUX_ARM_HPP
--- 277,286 ----
      : [rv] "=&r" (rv), [tmp] "=&r" (tmp)
      : [ev] "r" (exchange_value), [dest] "r" (dest), [cv] "r" (compare_value)
      : "memory");
    return rv;
  #else
!   return cmpxchg_using_helper<jlong>(reorder_cmpxchg_long_func, exchange_value, dest, compare_value);
  #endif
  }
  
  #endif // OS_CPU_LINUX_ARM_VM_ATOMIC_LINUX_ARM_HPP