--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/cpu/s390/compiledIC_s390.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016 SAP SE. 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 "asm/macroAssembler.inline.hpp"
+#include "code/compiledIC.hpp"
+#include "code/icBuffer.hpp"
+#include "code/nmethod.hpp"
+#include "memory/resourceArea.hpp"
+#include "runtime/mutexLocker.hpp"
+#include "runtime/safepoint.hpp"
+#ifdef COMPILER2
+#include "opto/matcher.hpp"
+#endif
+
+// ----------------------------------------------------------------------------
+
+#undef  __
+#define __ _masm.
+
+address CompiledStaticCall::emit_to_interp_stub(CodeBuffer &cbuf, address mark/* = NULL*/) {
+#ifdef COMPILER2
+  // Stub is fixed up when the corresponding call is converted from calling
+  // compiled code to calling interpreted code.
+  if (mark == NULL) {
+    // Get the mark within main instrs section which is set to the address of the call.
+    mark = cbuf.insts_mark();
+  }
+  assert(mark != NULL, "mark must not be NULL");
+
+  // Note that the code buffer's insts_mark is always relative to insts.
+  // That's why we must use the macroassembler to generate a stub.
+  MacroAssembler _masm(&cbuf);
+
+  address stub = __ start_a_stub(Compile::MAX_stubs_size);
+  if (stub == NULL) {
+    return NULL;  // CodeBuffer::expand failed.
+  }
+  __ relocate(static_stub_Relocation::spec(mark));
+
+  AddressLiteral meta = __ allocate_metadata_address(NULL);
+  bool success = __ load_const_from_toc(as_Register(Matcher::inline_cache_reg_encode()), meta);
+
+  __ set_inst_mark();
+  AddressLiteral a((address)-1);
+  success = success && __ load_const_from_toc(Z_R1, a);
+  if (!success) {
+    return NULL;  // CodeCache is full.
+  }
+
+  __ z_br(Z_R1);
+  __ end_a_stub(); // Update current stubs pointer and restore insts_end.
+  return stub;
+#else
+  ShouldNotReachHere();
+#endif
+}
+
+#undef __
+
+int CompiledStaticCall::to_interp_stub_size() {
+  return 2 * MacroAssembler::load_const_from_toc_size() +
+         2; // branch
+}
+
+// Relocation entries for call stub, compiled java to interpreter.
+int CompiledStaticCall::reloc_to_interp_stub() {
+  return 5; // 4 in emit_java_to_interp + 1 in Java_Static_Call
+}
+
+void CompiledDirectStaticCall::set_to_interpreted(const methodHandle& callee, address entry) {
+  address stub = find_stub(/*is_aot*/ false);
+  guarantee(stub != NULL, "stub not found");
+
+  if (TraceICs) {
+    ResourceMark rm;
+    tty->print_cr("CompiledDirectStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
+                  p2i(instruction_address()),
+                  callee->name_and_sig_as_C_string());
+  }
+
+  // Creation also verifies the object.
+  NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + NativeCall::get_IC_pos_in_java_to_interp_stub());
+  NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
+
+#ifdef ASSERT
+  // A generated lambda form might be deleted from the Lambdaform
+  // cache in MethodTypeForm.  If a jit compiled lambdaform method
+  // becomes not entrant and the cache access returns null, the new
+  // resolve will lead to a new generated LambdaForm.
+  volatile intptr_t data = method_holder->data();
+  volatile address destination = jump->jump_destination();
+  assert(data == 0 || data == (intptr_t)callee() || callee->is_compiled_lambda_form(),
+         "a) MT-unsafe modification of inline cache");
+  assert(destination == (address)-1 || destination == entry,
+         "b) MT-unsafe modification of inline cache");
+#endif
+
+  // Update stub.
+  method_holder->set_data((intptr_t)callee());
+  jump->set_jump_destination(entry);
+
+  // Update jump to call.
+  set_destination_mt_safe(stub);
+}
+
+void CompiledDirectStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
+  assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
+  // Reset stub.
+  address stub = static_stub->addr();
+  assert(stub != NULL, "stub not found");
+  // Creation also verifies the object.
+  NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + NativeCall::get_IC_pos_in_java_to_interp_stub());
+  NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
+  method_holder->set_data(0);
+  jump->set_jump_destination((address)-1);
+}
+
+//-----------------------------------------------------------------------------
+
+#ifndef PRODUCT
+
+void CompiledDirectStaticCall::verify() {
+  // Verify call.
+  _call->verify();
+  if (os::is_MP()) {
+    _call->verify_alignment();
+  }
+
+  // Verify stub.
+  address stub = find_stub(/*is_aot*/ false);
+  assert(stub != NULL, "no stub found for static call");
+  // Creation also verifies the object.
+  NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + NativeCall::get_IC_pos_in_java_to_interp_stub());
+  NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
+
+  // Verify state.
+  assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
+}
+
+#endif // !PRODUCT