src/os_cpu/linux_sparc/vm/atomic_linux_sparc.hpp

rev 13450 : imported patch linux_sparc
rev 13452 : [mq]: coleen_review1

*** 119,159 ****
  
  inline void*    Atomic::xchg_ptr(void*    exchange_value, volatile void*     dest) {
    return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
  }
  
! 
! inline jint     Atomic::cmpxchg    (jint     exchange_value, volatile jint*     dest, jint     compare_value, cmpxchg_memory_order order) {
!   jint rv;
    __asm__ volatile(
      " cas    [%2], %3, %0"
      : "=r" (rv)
      : "0" (exchange_value), "r" (dest), "r" (compare_value)
      : "memory");
    return rv;
  }
  
! inline jlong    Atomic::cmpxchg    (jlong    exchange_value, volatile jlong*    dest, jlong    compare_value, cmpxchg_memory_order order) {
!   jlong rv;
    __asm__ volatile(
      " casx   [%2], %3, %0"
      : "=r" (rv)
      : "0" (exchange_value), "r" (dest), "r" (compare_value)
      : "memory");
    return rv;
  }
  
- inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value, cmpxchg_memory_order order) {
-   intptr_t rv;
-   __asm__ volatile(
-     " casx    [%2], %3, %0"
-     : "=r" (rv)
-     : "0" (exchange_value), "r" (dest), "r" (compare_value)
-     : "memory");
-   return rv;
- }
- 
- inline void*    Atomic::cmpxchg_ptr(void*    exchange_value, volatile void*     dest, void*    compare_value, cmpxchg_memory_order order) {
-   return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value, order);
- }
- 
  #endif // OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP
--- 119,160 ----
  
  inline void*    Atomic::xchg_ptr(void*    exchange_value, volatile void*     dest) {
    return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
  }
  
! // No direct support for cmpxchg of bytes; emulate using int.
! template<>
! struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {};
! 
! template<>
! template<typename T>
! inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
!                                                 T volatile* dest,
!                                                 T compare_value,
!                                                 cmpxchg_memory_order order) {
!   STATIC_ASSERT(4 == sizeof(T));
!   T rv;
    __asm__ volatile(
      " cas    [%2], %3, %0"
      : "=r" (rv)
      : "0" (exchange_value), "r" (dest), "r" (compare_value)
      : "memory");
    return rv;
  }
  
! template<>
! template<typename T>
! inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
!                                                 T volatile* dest,
!                                                 T compare_value,
!                                                 cmpxchg_memory_order order) {
!   STATIC_ASSERT(8 == sizeof(T));
!   T rv;
    __asm__ volatile(
      " casx   [%2], %3, %0"
      : "=r" (rv)
      : "0" (exchange_value), "r" (dest), "r" (compare_value)
      : "memory");
    return rv;
  }
  
  #endif // OS_CPU_LINUX_SPARC_VM_ATOMIC_LINUX_SPARC_INLINE_HPP