85       lock
  86       cmpxchgb %dil, (%rsi)
  87       .end
  88 
  89   // Support for jint Atomic::cmpxchg(jint exchange_value, 
  90   //                                  volatile jint *dest, 
  91   //                                  jint compare_value)
  92       .inline _Atomic_cmpxchg,3
  93       movl     %edx, %eax      // compare_value
  94       lock
  95       cmpxchgl %edi, (%rsi)
  96       .end
  97 
  98   // Support for jlong Atomic::cmpxchg(jlong exchange_value,
  99   //                                   volatile jlong* dest,
 100   //                                   jlong compare_value)
 101       .inline _Atomic_cmpxchg_long,3
 102       movq     %rdx, %rax      // compare_value
 103       lock
 104       cmpxchgq %rdi, (%rsi)
 105       .end
 106 
 107   // Support for OrderAccess::acquire()
 108       .inline _OrderAccess_acquire,0
 109       movl     0(%rsp), %eax
 110       .end
 111 
 112   // Support for OrderAccess::fence()
 113       .inline _OrderAccess_fence,0
 114       lock
 115       addl     $0, (%rsp)
 116       .end
 117 
 118   // Support for u2 Bytes::swap_u2(u2 x)
 119       .inline _raw_swap_u2,1
 120       movw     %di, %ax
 121       rorw     $8, %ax
 122       .end
 123 
 124   // Support for u4 Bytes::swap_u4(u4 x)
 125       .inline _raw_swap_u4,1
 126       movl     %edi, %eax
 127       bswapl   %eax
 128       .end
 129 
 130   // Support for u8 Bytes::swap_u8(u8 x)
 131       .inline _raw_swap_u8,1
 132       movq     %rdi, %rax
 133       bswapq   %rax
 134       .end
 135 

  85       lock
  86       cmpxchgb %dil, (%rsi)
  87       .end
  88 
  89   // Support for jint Atomic::cmpxchg(jint exchange_value,
  90   //                                  volatile jint *dest,
  91   //                                  jint compare_value)
  92       .inline _Atomic_cmpxchg,3
  93       movl     %edx, %eax      // compare_value
  94       lock
  95       cmpxchgl %edi, (%rsi)
  96       .end
  97 
  98   // Support for jlong Atomic::cmpxchg(jlong exchange_value,
  99   //                                   volatile jlong* dest,
 100   //                                   jlong compare_value)
 101       .inline _Atomic_cmpxchg_long,3
 102       movq     %rdx, %rax      // compare_value
 103       lock
 104       cmpxchgq %rdi, (%rsi)











 105       .end
 106 
 107   // Support for u2 Bytes::swap_u2(u2 x)
 108       .inline _raw_swap_u2,1
 109       movw     %di, %ax
 110       rorw     $8, %ax
 111       .end
 112 
 113   // Support for u4 Bytes::swap_u4(u4 x)
 114       .inline _raw_swap_u4,1
 115       movl     %edi, %eax
 116       bswapl   %eax
 117       .end
 118 
 119   // Support for u8 Bytes::swap_u8(u8 x)
 120       .inline _raw_swap_u8,1
 121       movq     %rdi, %rax
 122       bswapq   %rax
 123       .end
 124