src/os_cpu/bsd_x86/vm/atomic_bsd_x86.inline.hpp

rev 7555 : Improved metaprogramming

*** 86,97 ****
  
  inline void*    Atomic::xchg_ptr(void*    exchange_value, volatile void*     dest) {
    return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
  }
  
! #define VM_HAS_SPECIALIZED_CMPXCHG_BYTE
! inline jbyte    Atomic::cmpxchg    (jbyte    exchange_value, volatile jbyte*    dest, jbyte    compare_value) {
    int mp = os::is_MP();
    __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgb %1,(%3)"
                      : "=a" (exchange_value)
                      : "q" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
                      : "cc", "memory");
--- 86,96 ----
  
  inline void*    Atomic::xchg_ptr(void*    exchange_value, volatile void*     dest) {
    return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
  }
  
! inline jbyte    AtomicPlatform::cmpxchg(jbyte    exchange_value, volatile jbyte*    dest, jbyte    compare_value) {
    int mp = os::is_MP();
    __asm__ volatile (LOCK_IF_MP(%4) "cmpxchgb %1,(%3)"
                      : "=a" (exchange_value)
                      : "q" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
                      : "cc", "memory");