src/hotspot/os_cpu/linux_sparc/atomic_linux_sparc.hpp

rev 49986 : 8202080: Introduce ordering semantics for Atomic::add and other RMW atomics
Reviewed-by: lucy, rehn, dholmes

*** 1,7 ****
  /*
!  * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 30,45 ****
  template<size_t byte_size>
  struct Atomic::PlatformAdd
    : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
  {
    template<typename I, typename D>
!   D add_and_fetch(I add_value, D volatile* dest) const;
  };
  
  template<>
  template<typename I, typename D>
! inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest) const {
    STATIC_ASSERT(4 == sizeof(I));
    STATIC_ASSERT(4 == sizeof(D));
  
    D rv;
    __asm__ volatile(
--- 30,46 ----
  template<size_t byte_size>
  struct Atomic::PlatformAdd
    : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
  {
    template<typename I, typename D>
!   D add_and_fetch(I add_value, D volatile* dest, atomic_memory_order order) const;
  };
  
  template<>
  template<typename I, typename D>
! inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest,
!                                                atomic_memory_order order) const {
    STATIC_ASSERT(4 == sizeof(I));
    STATIC_ASSERT(4 == sizeof(D));
  
    D rv;
    __asm__ volatile(
*** 57,67 ****
    return rv;
  }
  
  template<>
  template<typename I, typename D>
! inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest) const {
    STATIC_ASSERT(8 == sizeof(I));
    STATIC_ASSERT(8 == sizeof(D));
  
    D rv;
    __asm__ volatile(
--- 58,69 ----
    return rv;
  }
  
  template<>
  template<typename I, typename D>
! inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest,
!                                                atomic_memory_order order) const {
    STATIC_ASSERT(8 == sizeof(I));
    STATIC_ASSERT(8 == sizeof(D));
  
    D rv;
    __asm__ volatile(
*** 80,90 ****
  }
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
!                                              T volatile* dest) const {
    STATIC_ASSERT(4 == sizeof(T));
    T rv = exchange_value;
    __asm__ volatile(
      " swap   [%2],%1\n\t"
      : "=r" (rv)
--- 82,93 ----
  }
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
!                                              T volatile* dest,
!                                              atomic_memory_order order) const {
    STATIC_ASSERT(4 == sizeof(T));
    T rv = exchange_value;
    __asm__ volatile(
      " swap   [%2],%1\n\t"
      : "=r" (rv)
*** 94,104 ****
  }
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
!                                              T volatile* dest) const {
    STATIC_ASSERT(8 == sizeof(T));
    T rv = exchange_value;
    __asm__ volatile(
      "1:\n\t"
      " mov    %1, %%o3\n\t"
--- 97,108 ----
  }
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
!                                              T volatile* dest,
!                                              atomic_memory_order order) const {
    STATIC_ASSERT(8 == sizeof(T));
    T rv = exchange_value;
    __asm__ volatile(
      "1:\n\t"
      " mov    %1, %%o3\n\t"
*** 121,131 ****
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 cmpxchg_memory_order order) const {
    STATIC_ASSERT(4 == sizeof(T));
    T rv;
    __asm__ volatile(
      " cas    [%2], %3, %0"
      : "=r" (rv)
--- 125,135 ----
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 atomic_memory_order order) const {
    STATIC_ASSERT(4 == sizeof(T));
    T rv;
    __asm__ volatile(
      " cas    [%2], %3, %0"
      : "=r" (rv)
*** 137,147 ****
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 cmpxchg_memory_order order) const {
    STATIC_ASSERT(8 == sizeof(T));
    T rv;
    __asm__ volatile(
      " casx   [%2], %3, %0"
      : "=r" (rv)
--- 141,151 ----
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 atomic_memory_order order) const {
    STATIC_ASSERT(8 == sizeof(T));
    T rv;
    __asm__ volatile(
      " casx   [%2], %3, %0"
      : "=r" (rv)