#if(APPLE)
  #define FUNCTION_NAME(name) _##name
#else
  #define FUNCTION_NAME(name) name
#endif

.globl FUNCTION_NAME(AtomicLoad)
.globl FUNCTION_NAME(AtomicStore)
.globl FUNCTION_NAME(AtomicExchange)

FUNCTION_NAME(AtomicLoad):
    movq (%rdi), %rax
    retq

FUNCTION_NAME(AtomicStore):
    movq %rsi, (%rdi)
    retq

FUNCTION_NAME(AtomicExchange):
    xchg (%rdi), %rsi  # Swap
    movq %rsi, %rax  # Set prev value to RAX
    retq