--- old/src/hotspot/os_cpu/linux_sparc/thread_linux_sparc.hpp	2020-05-01 02:29:47.896503913 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 1998, 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_THREAD_LINUX_SPARC_HPP
-#define OS_CPU_LINUX_SPARC_THREAD_LINUX_SPARC_HPP
-
-private:
-
-  void pd_initialize() {
-    _anchor.clear();
-    _base_of_stack_pointer        = NULL;
-  }
-
-  frame pd_last_frame();
-
-  // Sometimes the trap handler needs to record both PC and NPC.
-  // This is a SPARC-specific companion to Thread::set_saved_exception_pc.
-  address _saved_exception_npc;
-
-  // In polling_page_safepoint_handler_blob(s) we have to tail call other
-  // blobs without blowing any registers.  A tail call requires some
-  // register to jump with and we can't blow any registers, so it must
-  // be restored in the delay slot.  'restore' cannot be used as it
-  // will chop the heads off of 64-bit %o registers in the 32-bit
-  // build.  Instead we reload the registers using G2_thread and this
-  // location.  Must be 64bits in the 32-bit LION build.
-  jdouble _o_reg_temps[6];
-
-  // a stack pointer older than any java frame stack pointer.  It is
-  // used to validate stack pointers in frame::next_younger_sp (it
-  // provides the upper bound in the range check).  This is necessary
-  // on Solaris/SPARC since the ucontext passed to a signal handler is
-  // sometimes corrupt and we need a way to check the extracted sp.
-  intptr_t* _base_of_stack_pointer;
-
-public:
-
-  static int o_reg_temps_offset_in_bytes() { return offset_of(JavaThread, _o_reg_temps); }
-
-#ifndef _LP64
-  address o_reg_temps(int i) { return (address)&_o_reg_temps[i]; }
-#endif
-
-  static ByteSize saved_exception_npc_offset() { return byte_offset_of(JavaThread,_saved_exception_npc); }
-
-  address  saved_exception_npc()             { return _saved_exception_npc; }
-  void set_saved_exception_npc(address a)    { _saved_exception_npc = a; }
-
-
-public:
-
-  intptr_t* base_of_stack_pointer() { return _base_of_stack_pointer; }
-
-  void set_base_of_stack_pointer(intptr_t* base_sp) {
-    _base_of_stack_pointer = base_sp;
-  }
-
-  void record_base_of_stack_pointer() {
-    intptr_t *sp = (intptr_t *)(((intptr_t)StubRoutines::Sparc::flush_callers_register_windows_func()()));
-    intptr_t *ysp;
-    while((ysp = (intptr_t*)sp[FP->sp_offset_in_saved_window()]) != NULL) {
-      sp = (intptr_t *)((intptr_t)ysp + STACK_BIAS);
-    }
-    _base_of_stack_pointer = sp;
-  }
-
-  bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava);
-
-  bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava);
-
-  // These routines are only used on cpu architectures that
-  // have separate register stacks (Itanium).
-  static bool register_stack_overflow() { return false; }
-  static void enable_register_stack_guard() {}
-  static void disable_register_stack_guard() {}
-
-#endif // OS_CPU_LINUX_SPARC_THREAD_LINUX_SPARC_HPP