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src/os_cpu/linux_s390/vm/orderAccess_linux_s390.inline.hpp

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rev 13030 : [mq]: add_const
   1 /*
   2  * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2016 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.


  57 #define inlasm_compiler_barrier() __asm__ volatile ("" : : : "memory");
  58 // "bcr 15, 0" is used as two way memory barrier.
  59 #define inlasm_zarch_sync() __asm__ __volatile__ ("bcr 15, 0" : : : "memory");
  60 
  61 // Release and acquire are empty on z/Architecture, but potential
  62 // optimizations of gcc must be forbidden by OrderAccess::release and
  63 // OrderAccess::acquire.
  64 #define inlasm_zarch_release() inlasm_compiler_barrier()
  65 #define inlasm_zarch_acquire() inlasm_compiler_barrier()
  66 #define inlasm_zarch_fence()   inlasm_zarch_sync()
  67 
  68 inline void OrderAccess::loadload()   { inlasm_compiler_barrier(); }
  69 inline void OrderAccess::storestore() { inlasm_compiler_barrier(); }
  70 inline void OrderAccess::loadstore()  { inlasm_compiler_barrier(); }
  71 inline void OrderAccess::storeload()  { inlasm_zarch_sync(); }
  72 
  73 inline void OrderAccess::acquire()    { inlasm_zarch_acquire(); }
  74 inline void OrderAccess::release()    { inlasm_zarch_release(); }
  75 inline void OrderAccess::fence()      { inlasm_zarch_sync(); }
  76 
  77 template<> inline jbyte  OrderAccess::specialized_load_acquire<jbyte> (volatile jbyte*  p) { register jbyte  t = *p; inlasm_zarch_acquire(); return t; }
  78 template<> inline jshort OrderAccess::specialized_load_acquire<jshort>(volatile jshort* p) { register jshort t = *p; inlasm_zarch_acquire(); return t; }
  79 template<> inline jint   OrderAccess::specialized_load_acquire<jint>  (volatile jint*   p) { register jint   t = *p; inlasm_zarch_acquire(); return t; }
  80 template<> inline jlong  OrderAccess::specialized_load_acquire<jlong> (volatile jlong*  p) { register jlong  t = *p; inlasm_zarch_acquire(); return t; }
  81 
  82 #undef inlasm_compiler_barrier
  83 #undef inlasm_zarch_sync
  84 #undef inlasm_zarch_release
  85 #undef inlasm_zarch_acquire
  86 #undef inlasm_zarch_fence
  87 
  88 #define VM_HAS_GENERALIZED_ORDER_ACCESS 1
  89 
  90 #endif // OS_CPU_LINUX_S390_VM_ORDERACCESS_LINUX_S390_INLINE_HPP
  91 
  92 
   1 /*
   2  * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2016 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.


  57 #define inlasm_compiler_barrier() __asm__ volatile ("" : : : "memory");
  58 // "bcr 15, 0" is used as two way memory barrier.
  59 #define inlasm_zarch_sync() __asm__ __volatile__ ("bcr 15, 0" : : : "memory");
  60 
  61 // Release and acquire are empty on z/Architecture, but potential
  62 // optimizations of gcc must be forbidden by OrderAccess::release and
  63 // OrderAccess::acquire.
  64 #define inlasm_zarch_release() inlasm_compiler_barrier()
  65 #define inlasm_zarch_acquire() inlasm_compiler_barrier()
  66 #define inlasm_zarch_fence()   inlasm_zarch_sync()
  67 
  68 inline void OrderAccess::loadload()   { inlasm_compiler_barrier(); }
  69 inline void OrderAccess::storestore() { inlasm_compiler_barrier(); }
  70 inline void OrderAccess::loadstore()  { inlasm_compiler_barrier(); }
  71 inline void OrderAccess::storeload()  { inlasm_zarch_sync(); }
  72 
  73 inline void OrderAccess::acquire()    { inlasm_zarch_acquire(); }
  74 inline void OrderAccess::release()    { inlasm_zarch_release(); }
  75 inline void OrderAccess::fence()      { inlasm_zarch_sync(); }
  76 
  77 template<> inline jbyte  OrderAccess::specialized_load_acquire<jbyte> (const volatile jbyte*  p) { register jbyte  t = *p; inlasm_zarch_acquire(); return t; }
  78 template<> inline jshort OrderAccess::specialized_load_acquire<jshort>(const volatile jshort* p) { register jshort t = *p; inlasm_zarch_acquire(); return t; }
  79 template<> inline jint   OrderAccess::specialized_load_acquire<jint>  (const volatile jint*   p) { register jint   t = *p; inlasm_zarch_acquire(); return t; }
  80 template<> inline jlong  OrderAccess::specialized_load_acquire<jlong> (const volatile jlong*  p) { register jlong  t = *p; inlasm_zarch_acquire(); return t; }
  81 
  82 #undef inlasm_compiler_barrier
  83 #undef inlasm_zarch_sync
  84 #undef inlasm_zarch_release
  85 #undef inlasm_zarch_acquire
  86 #undef inlasm_zarch_fence
  87 
  88 #define VM_HAS_GENERALIZED_ORDER_ACCESS 1
  89 
  90 #endif // OS_CPU_LINUX_S390_VM_ORDERACCESS_LINUX_S390_INLINE_HPP
  91 
  92 
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