--- old/src/hotspot/os_cpu/linux_sparc/thread_linux_sparc.cpp	2020-05-01 02:29:47.184490217 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,133 +0,0 @@
-/*
- * Copyright (c) 2003, 2018, 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.
- *
- */
-
-#include "precompiled.hpp"
-#include "memory/metaspaceShared.hpp"
-#include "runtime/frame.inline.hpp"
-#include "runtime/thread.inline.hpp"
-
-frame JavaThread::pd_last_frame() {
-  assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
-  assert(_anchor.walkable(), "thread has not dumped its register windows yet");
-
-  assert(_anchor.last_Java_pc() != NULL, "Ack no pc!");
-  return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc());
-}
-
-bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext, bool isInJava) {
-  ucontext_t* uc = (ucontext_t*) ucontext;
-  *fr_addr = frame((intptr_t*)uc->uc_mcontext.mc_i7, frame::unpatchable,
-                   (address)uc->uc_mcontext.mc_gregs[MC_PC]);
-  return true;
-}
-
-// For Forte Analyzer AsyncGetCallTrace profiling support - thread is
-// currently interrupted by SIGPROF
-bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
-                                                     void* ucontext,
-                                                     bool isInJava) {
-  assert(Thread::current() == this, "caller must be current thread");
-  assert(this->is_Java_thread(), "must be JavaThread");
-
-  JavaThread* jt = (JavaThread *)this;
-
-  if (!isInJava) {
-    // make_walkable flushes register windows and grabs last_Java_pc
-    // which can not be done if the ucontext sp matches last_Java_sp
-    // stack walking utilities assume last_Java_pc set if marked flushed
-    jt->frame_anchor()->make_walkable(jt);
-  }
-
-  // If we have a walkable last_Java_frame, then we should use it
-  // even if isInJava == true. It should be more reliable than
-  // ucontext info.
-  if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {
-    *fr_addr = jt->pd_last_frame();
-    return true;
-  }
-
-  ucontext_t* uc = (ucontext_t*) ucontext;
-
-  // At this point, we don't have a walkable last_Java_frame, so
-  // we try to glean some information out of the ucontext.
-  intptr_t* ret_sp;
-  ExtendedPC addr =
-    os::fetch_frame_from_context(uc, &ret_sp,
-                                 NULL /* ret_fp only used on X86 */);
-  if (addr.pc() == NULL || ret_sp == NULL) {
-    // ucontext wasn't useful
-    return false;
-  }
-
-  if (MetaspaceShared::is_in_trampoline_frame(addr.pc())) {
-    // In the middle of a trampoline call. Bail out for safety.
-    // This happens rarely so shouldn't affect profiling.
-    return false;
-  }
-
-  // we were running Java code when SIGPROF came in
-  if (isInJava) {
-    // If we have a last_Java_sp, then the SIGPROF signal caught us
-    // right when we were transitioning from _thread_in_Java to a new
-    // JavaThreadState. We use last_Java_sp instead of the sp from
-    // the ucontext since it should be more reliable.
-    if (jt->has_last_Java_frame()) {
-      ret_sp = jt->last_Java_sp();
-    }
-    // Implied else: we don't have a last_Java_sp so we use what we
-    // got from the ucontext.
-
-    frame ret_frame(ret_sp, frame::unpatchable, addr.pc());
-    if (!ret_frame.safe_for_sender(jt)) {
-      // nothing else to try if the frame isn't good
-      return false;
-    }
-    *fr_addr = ret_frame;
-    return true;
-  }
-
-  // At this point, we know we weren't running Java code. We might
-  // have a last_Java_sp, but we don't have a walkable frame.
-  // However, we might still be able to construct something useful
-  // if the thread was running native code.
-  if (jt->has_last_Java_frame()) {
-    assert(!jt->frame_anchor()->walkable(), "case covered above");
-
-    if (jt->thread_state() == _thread_in_native) {
-      frame ret_frame(jt->last_Java_sp(), frame::unpatchable, addr.pc());
-      if (!ret_frame.safe_for_sender(jt)) {
-        // nothing else to try if the frame isn't good
-        return false;
-      }
-      *fr_addr = ret_frame;
-      return true;
-    }
-  }
-
-  // nothing else to try
-  return false;
-}
-
-void JavaThread::cache_global_variables() { }
-