1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  24 
  25 #ifndef OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP
  26 #define OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP
  27 
  28 // For Sun Studio - implementation is in solaris_x86_64.il.
  29 
  30 extern "C" {
  31   int32_t _Atomic_add(int32_t add_value, volatile int32_t* dest);
  32   int64_t _Atomic_add_long(int64_t add_value, volatile int64_t* dest);
  33 
  34   int32_t _Atomic_xchg(int32_t exchange_value, volatile int32_t* dest);
  35   int8_t  _Atomic_cmpxchg_byte(int8_t exchange_value, volatile int8_t* dest,
  36                                int8_t compare_value);
  37   int32_t _Atomic_cmpxchg(int32_t exchange_value, volatile int32_t* dest,
  38                           int32_t compare_value);
  39   int64_t _Atomic_cmpxchg_long(int64_t exchange_value, volatile int64_t* dest,
  40                                int64_t compare_value);
  41 }
  42 
  43 template<size_t byte_size>
  44 struct Atomic::PlatformAdd
  45   : Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
  46 {
  47   template<typename I, typename D>
  48   D add_and_fetch(I add_value, D volatile* dest, atomic_memory_order order) const;
  49 };
  50 
  51 // Not using add_using_helper; see comment for cmpxchg.
  52 template<>
  53 template<typename I, typename D>
  54 inline D Atomic::PlatformAdd<4>::add_and_fetch(I add_value, D volatile* dest,
  55                                                atomic_memory_order order) const {
  56   STATIC_ASSERT(4 == sizeof(I));
  57   STATIC_ASSERT(4 == sizeof(D));
  58   return PrimitiveConversions::cast<D>(
  59     _Atomic_add(PrimitiveConversions::cast<int32_t>(add_value),
  60                 reinterpret_cast<int32_t volatile*>(dest)));
  61 }
  62 
  63 // Not using add_using_helper; see comment for cmpxchg.
  64 template<>
  65 template<typename I, typename D>
  66 inline D Atomic::PlatformAdd<8>::add_and_fetch(I add_value, D volatile* dest,
  67                                                atomic_memory_order order) const {
  68   STATIC_ASSERT(8 == sizeof(I));
  69   STATIC_ASSERT(8 == sizeof(D));
  70   return PrimitiveConversions::cast<D>(
  71     _Atomic_add_long(PrimitiveConversions::cast<int64_t>(add_value),
  72                      reinterpret_cast<int64_t volatile*>(dest)));
  73 }
  74 
  75 template<>
  76 template<typename T>
  77 inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
  78                                              T volatile* dest,
  79                                              atomic_memory_order order) const {
  80   STATIC_ASSERT(4 == sizeof(T));
  81   return PrimitiveConversions::cast<T>(
  82     _Atomic_xchg(PrimitiveConversions::cast<int32_t>(exchange_value),
  83                  reinterpret_cast<int32_t volatile*>(dest)));
  84 }
  85 
  86 extern "C" int64_t _Atomic_xchg_long(int64_t exchange_value, volatile int64_t* dest);
  87 
  88 template<>
  89 template<typename T>
  90 inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
  91                                              T volatile* dest,
  92                                              atomic_memory_order order) const {
  93   STATIC_ASSERT(8 == sizeof(T));
  94   return PrimitiveConversions::cast<T>(
  95     _Atomic_xchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),
  96                       reinterpret_cast<int64_t volatile*>(dest)));
  97 }
  98 
  99 // Not using cmpxchg_using_helper here, because some configurations of
 100 // Solaris compiler don't deal well with passing a "defined in .il"
 101 // function as an argument.  We *should* switch to using gcc-style
 102 // inline assembly, but attempting to do so with Studio 12.4 ran into
 103 // segfaults.
 104 
 105 template<>
 106 template<typename T>
 107 inline T Atomic::PlatformCmpxchg<1>::operator()(T exchange_value,
 108                                                 T volatile* dest,
 109                                                 T compare_value,
 110                                                 atomic_memory_order order) const {
 111   STATIC_ASSERT(1 == sizeof(T));
 112   return PrimitiveConversions::cast<T>(
 113     _Atomic_cmpxchg_byte(PrimitiveConversions::cast<int8_t>(exchange_value),
 114                          reinterpret_cast<int8_t volatile*>(dest),
 115                          PrimitiveConversions::cast<int8_t>(compare_value)));
 116 }
 117 
 118 template<>
 119 template<typename T>
 120 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
 121                                                 T volatile* dest,
 122                                                 T compare_value,
 123                                                 atomic_memory_order order) const {
 124   STATIC_ASSERT(4 == sizeof(T));
 125   return PrimitiveConversions::cast<T>(
 126     _Atomic_cmpxchg(PrimitiveConversions::cast<int32_t>(exchange_value),
 127                     reinterpret_cast<int32_t volatile*>(dest),
 128                     PrimitiveConversions::cast<int32_t>(compare_value)));
 129 }
 130 
 131 template<>
 132 template<typename T>
 133 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
 134                                                 T volatile* dest,
 135                                                 T compare_value,
 136                                                 atomic_memory_order order) const {
 137   STATIC_ASSERT(8 == sizeof(T));
 138   return PrimitiveConversions::cast<T>(
 139     _Atomic_cmpxchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),
 140                          reinterpret_cast<int64_t volatile*>(dest),
 141                          PrimitiveConversions::cast<int64_t>(compare_value)));
 142 }
 143 
 144 #endif // OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP
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