--- old/src/hotspot/os_cpu/solaris_sparc/atomic_solaris_sparc.hpp	2020-05-01 02:29:50.064545616 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,115 +0,0 @@
-/*
- * Copyright (c) 1999, 2019, 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.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-#ifndef OS_CPU_SOLARIS_SPARC_ATOMIC_SOLARIS_SPARC_HPP
-#define OS_CPU_SOLARIS_SPARC_ATOMIC_SOLARIS_SPARC_HPP
-
-// Implementation of class atomic
-
-// Implement ADD using a CAS loop.
-template<size_t byte_size>
-struct Atomic::PlatformAdd {
-  template<typename D, typename I>
-  inline D add_and_fetch(D volatile* dest, I add_value, atomic_memory_order order) const {
-    D old_value = *dest;
-    while (true) {
-      D new_value = old_value + add_value;
-      D result = cmpxchg(dest, old_value, new_value);
-      if (result == old_value) break;
-      old_value = result;
-    }
-    return old_value + add_value;
-  }
-
-  template<typename D, typename I>
-  inline D fetch_and_add(D volatile* dest, I add_value, atomic_memory_order order) const {
-    return add_and_fetch(dest, add_value, order) - add_value;
-  }
-};
-
-template<>
-template<typename T>
-inline T Atomic::PlatformXchg<4>::operator()(T volatile* dest,
-                                             T exchange_value,
-                                             atomic_memory_order order) const {
-  STATIC_ASSERT(4 == sizeof(T));
-  __asm__ volatile (  "swap [%2],%0"
-                    : "=r" (exchange_value)
-                    : "0" (exchange_value), "r" (dest)
-                    : "memory");
-  return exchange_value;
-}
-
-template<>
-template<typename T>
-inline T Atomic::PlatformXchg<8>::operator()(T volatile* dest,
-                                             T exchange_value,
-                                             atomic_memory_order order) const {
-  STATIC_ASSERT(8 == sizeof(T));
-  T old_value = *dest;
-  while (true) {
-    T result = cmpxchg(dest, old_value, exchange_value);
-    if (result == old_value) break;
-    old_value = result;
-  }
-  return old_value;
-}
-
-// 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 volatile* dest,
-                                                T compare_value,
-                                                T exchange_value,
-                                                atomic_memory_order order) const {
-  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 volatile* dest,
-                                                T compare_value,
-                                                T exchange_value,
-                                                atomic_memory_order order) const {
-  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_SOLARIS_SPARC_ATOMIC_SOLARIS_SPARC_HPP