--- old/src/hotspot/os_cpu/linux_sparc/atomic_linux_sparc.hpp	2020-05-20 18:09:39.085192580 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,160 +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_LINUX_SPARC_ATOMIC_LINUX_SPARC_HPP
-#define OS_CPU_LINUX_SPARC_ATOMIC_LINUX_SPARC_HPP
-
-// Implementation of class atomic
-
-template<size_t byte_size>
-struct Atomic::PlatformAdd {
-  template<typename D, typename I>
-  D add_and_fetch(D volatile* dest, I add_value, atomic_memory_order order) const;
-
-  template<typename D, typename I>
-  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 D, typename I>
-inline D Atomic::PlatformAdd<4>::add_and_fetch(D volatile* dest, I add_value,
-                                               atomic_memory_order order) const {
-  STATIC_ASSERT(4 == sizeof(I));
-  STATIC_ASSERT(4 == sizeof(D));
-
-  D rv;
-  __asm__ volatile(
-    "1: \n\t"
-    " ld     [%2], %%o2\n\t"
-    " add    %1, %%o2, %%o3\n\t"
-    " cas    [%2], %%o2, %%o3\n\t"
-    " cmp    %%o2, %%o3\n\t"
-    " bne    1b\n\t"
-    "  nop\n\t"
-    " add    %1, %%o2, %0\n\t"
-    : "=r" (rv)
-    : "r" (add_value), "r" (dest)
-    : "memory", "o2", "o3");
-  return rv;
-}
-
-template<>
-template<typename D, typename I>
-inline D Atomic::PlatformAdd<8>::add_and_fetch(D volatile* dest, I add_value,
-                                               atomic_memory_order order) const {
-  STATIC_ASSERT(8 == sizeof(I));
-  STATIC_ASSERT(8 == sizeof(D));
-
-  D rv;
-  __asm__ volatile(
-    "1: \n\t"
-    " ldx    [%2], %%o2\n\t"
-    " add    %1, %%o2, %%o3\n\t"
-    " casx   [%2], %%o2, %%o3\n\t"
-    " cmp    %%o2, %%o3\n\t"
-    " bne    %%xcc, 1b\n\t"
-    "  nop\n\t"
-    " add    %1, %%o2, %0\n\t"
-    : "=r" (rv)
-    : "r" (add_value), "r" (dest)
-    : "memory", "o2", "o3");
-  return rv;
-}
-
-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));
-  T rv = exchange_value;
-  __asm__ volatile(
-    " swap   [%2],%1\n\t"
-    : "=r" (rv)
-    : "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
-    : "memory");
-  return rv;
-}
-
-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 rv = exchange_value;
-  __asm__ volatile(
-    "1:\n\t"
-    " mov    %1, %%o3\n\t"
-    " ldx    [%2], %%o2\n\t"
-    " casx   [%2], %%o2, %%o3\n\t"
-    " cmp    %%o2, %%o3\n\t"
-    " bne    %%xcc, 1b\n\t"
-    "  nop\n\t"
-    " mov    %%o2, %0\n\t"
-    : "=r" (rv)
-    : "r" (exchange_value), "r" (dest)
-    : "memory", "o2", "o3");
-  return rv;
-}
-
-// 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_LINUX_SPARC_ATOMIC_LINUX_SPARC_HPP