--- /dev/null	2018-09-25 19:25:04.000000000 +0300
+++ new/src/hotspot/cpu/aarch32/interpreterRT_aarch32.cpp	2018-09-25 19:25:04.000000000 +0300
@@ -0,0 +1,355 @@
+/*
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, Red Hat Inc. All rights reserved.
+ * Copyright (c) 2015, Linaro Ltd. All rights reserved.
+ * Copyright (c) 2015-2018, Azul Systems, Inc. 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 "interpreter/interp_masm.hpp"
+#include "interpreter/interpreter.hpp"
+#include "interpreter/interpreterRuntime.hpp"
+#include "memory/allocation.inline.hpp"
+#include "memory/universe.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "runtime/handles.inline.hpp"
+#include "runtime/icache.hpp"
+#include "runtime/interfaceSupport.inline.hpp"
+#include "runtime/signature.hpp"
+
+#define __ _masm->
+
+/*#define print_copy(name, off) \
+  __ mov(rscratch1, (address)name);\
+  __ mov(rscratch2, off);\
+  __ reg_printf("%s copied from offset %p + %d\n", rscratch1, from(), rscratch2);*/
+
+#define print_copy(name, off)
+
+// Implementation of SignatureHandlerGenerator
+Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rlocals; }
+Register InterpreterRuntime::SignatureHandlerGenerator::to()   { return r4; }
+Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rscratch1; }
+
+InterpreterRuntime::SignatureHandlerGenerator::SignatureHandlerGenerator(
+  const methodHandle &method, CodeBuffer* buffer):
+  NativeSignatureIterator(method),
+  _next_double_dex(0),
+  _stack_offset(0)
+{
+  _masm = new MacroAssembler(buffer);
+  _num_int_args = (method->is_static() ? 1 : 0);
+  // See layout in interpreter_aarch32.cpp
+  _fp_arg_mask =  (1 <<(Argument::n_float_register_parameters_c * 3)) - 1;
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
+  print_copy(__FUNCTION__, Interpreter::local_offset_in_bytes(offset()));
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
+
+  switch (_num_int_args) {
+  case 0:
+    __ ldr(c_rarg1, src);
+    _num_int_args++;
+    break;
+  case 1:
+    __ ldr(c_rarg2, src);
+    _num_int_args++;
+    break;
+  case 2:
+    __ ldr(c_rarg3, src);
+    _num_int_args++;
+    break;
+  default:
+    __ ldr(r0, src);
+    __ str(r0, Address(to(), _stack_offset));
+    _stack_offset += wordSize;
+    _num_int_args++;
+    break;
+  }
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
+  print_copy(__FUNCTION__, Interpreter::local_offset_in_bytes(offset() + 1));
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
+  // Needs to be aligned to even registers. Means also won't be split across
+  // registers and stack.
+
+  switch (_num_int_args) {
+  case 0:
+  case 1:
+    __ ldrd(c_rarg2, c_rarg3, src);
+    _num_int_args = 3; // force next args onto stack
+    break;
+  default:
+    __ ldrd(r0, temp(), src);
+    _stack_offset = (_stack_offset + 7) & ~7; // Align on 8-byte boundary
+    __ strd(r0, temp(), Address(to(), _stack_offset));
+    _stack_offset += 2 * wordSize;
+    _num_int_args += 2;
+    break;
+  }
+}
+
+#ifdef HARD_FLOAT_CC
+void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
+  print_copy(__FUNCTION__, Interpreter::local_offset_in_bytes(offset()));
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
+
+    if (_fp_arg_mask & ((1 << Argument::n_float_register_parameters_c*2)-1)) {
+        unsigned index = __builtin_ctz(_fp_arg_mask);
+        __ vldr_f32(as_FloatRegister(index), src);
+        _fp_arg_mask &= ~(1 << index);
+        _next_double_dex += (~index) & 1;
+    } else {
+        __ ldr(r0, src);
+        __ str(r0, Address(to(), _stack_offset));
+        _stack_offset += wordSize;
+    }
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
+  print_copy(__FUNCTION__, Interpreter::local_offset_in_bytes(offset() + 1));
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
+
+    if (_next_double_dex < Argument::n_float_register_parameters_c) {
+        _fp_arg_mask &= ~((3 << _next_double_dex*2) | ((1 << _next_double_dex+16)));
+        __ vldr_f64(as_DoubleFloatRegister(_next_double_dex++), src);
+    } else {
+        __ ldrd(r0, temp(), src);
+        _stack_offset = (_stack_offset + 7) & ~7;
+        __ strd(r0, temp(), Address(to(), _stack_offset));
+        _stack_offset += 2 * wordSize;
+    }
+}
+#else
+// Just pass them in integer registers and on the stack as we would
+// any other argument
+void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
+  pass_int();
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
+  pass_long();
+}
+#endif //HARD_FLOAT_CC
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
+  print_copy(__FUNCTION__, Interpreter::local_offset_in_bytes(offset()));
+
+  switch (_num_int_args) {
+  case 0:
+    assert(offset() == 0, "argument register 1 can only be (non-null) receiver");
+    __ add(c_rarg1, from(), Interpreter::local_offset_in_bytes(offset()));
+    _num_int_args++;
+    break;
+  case 1:
+    {
+      __ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
+      __ mov(c_rarg2, 0);
+      __ ldr(temp(), r0);
+      Label L;
+      __ cbz(temp(), L);
+      __ mov(c_rarg2, r0);
+      __ bind(L);
+      _num_int_args++;
+      break;
+    }
+  case 2:
+    {
+      __ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
+      __ mov(c_rarg3, 0);
+      __ ldr(temp(), r0);
+      Label L;
+      __ cbz(temp(), L);
+      __ mov(c_rarg3, r0);
+      __ bind(L);
+      _num_int_args++;
+      break;
+    }
+ default:
+   {
+      __ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
+      __ ldr(temp(), r0);
+      Label L;
+      __ cbnz(temp(), L);
+      __ mov(r0, 0);
+      __ bind(L);
+      __ str(r0, Address(to(), _stack_offset));
+      _stack_offset += wordSize;
+      _num_int_args++;
+      break;
+   }
+  }
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
+  // generate code to handle arguments
+  iterate(fingerprint);
+
+  // return result handler
+  __ lea(r0, ExternalAddress(Interpreter::result_handler(method()->result_type())));
+  __ b(lr);
+
+  __ flush();
+}
+
+
+// Implementation of SignatureHandlerLibrary
+
+void SignatureHandlerLibrary::pd_set_handler(address handler) {}
+
+
+class SlowSignatureHandler : public NativeSignatureIterator {
+ private:
+  address   _from;
+  intptr_t* _to;
+  intptr_t* _int_args;
+  intptr_t* _fp_args;
+  intptr_t* _fp_identifiers;
+
+  int _num_int_reg_args;
+  int _next_double_dex;
+
+  virtual void pass_int()
+  {
+    jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
+    _from -= Interpreter::stackElementSize;
+
+    if (_num_int_reg_args < Argument::n_int_register_parameters_c-1) {
+      *_int_args++ = from_obj;
+      _num_int_reg_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_long()
+  {
+    intptr_t high_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
+    intptr_t low_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    _from -= 2*Interpreter::stackElementSize;
+
+    if (_num_int_reg_args < Argument::n_int_register_parameters_c-2) {
+      // Passing longs. As c_rarg0 is always reserved for jni_env we could only
+      // possibly stash a long in r3:r2 due to alignment so we can only enter here
+      // with either zero or one parameters.
+      // Align to two
+      _int_args += 1 - _num_int_reg_args; // 0 or 1
+      *_int_args++ = low_obj;
+      *_int_args++ = high_obj;
+      _num_int_reg_args = 3;
+    } else {
+      _to = (intptr_t*)(((intptr_t)_to + 7) & ~7); // Align to eight bytes
+      *_to++ = low_obj;
+      *_to++ = high_obj;
+      _num_int_reg_args = 3;
+    }
+  }
+
+  virtual void pass_object()
+  {
+    intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
+    _from -= Interpreter::stackElementSize;
+
+    if (_num_int_reg_args < Argument::n_int_register_parameters_c-1) {
+      *_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr;
+      _num_int_reg_args++;
+    } else {
+      *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
+    }
+  }
+#ifdef HARD_FLOAT_CC
+  virtual void pass_float()
+  {
+    jint from_obj = *(jint*)(_from+Interpreter::local_offset_in_bytes(0));
+    _from -= Interpreter::stackElementSize;
+
+    if ((*_fp_identifiers) & 0xffff) {
+      unsigned index = __builtin_ctz(*_fp_identifiers);
+      _fp_args[index] = from_obj;
+      *_fp_identifiers ^= 1 << index;
+      _next_double_dex += (~index) & 1;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_double()
+  {
+    intptr_t high_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
+    intptr_t low_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    _from -= 2*Interpreter::stackElementSize;
+
+    if (_next_double_dex < Argument::n_float_register_parameters_c) {
+      //We can allocate to a register.
+      int index = _next_double_dex++;
+      *_fp_identifiers &= ~((3 << index*2) | (1 << index+16));
+      _fp_args[index*2] = low_obj;
+      _fp_args[index*2 + 1] = high_obj;
+    } else {
+      _to = (intptr_t*)(((intptr_t)_to + 7) & ~7); // Align to eight bytes
+      *_to++ = low_obj;
+      *_to++ = high_obj;
+    }
+  }
+#else
+  virtual void pass_float() { pass_int(); }
+  virtual void pass_double() { pass_long(); }
+#endif // HARD_FLOAT_CC
+
+ public:
+  SlowSignatureHandler(const methodHandle &method, address from, intptr_t* to)
+    : NativeSignatureIterator(method)
+  {
+    _from = from;
+    _to   = to;
+    // See layout in interpreter_aarch32.cpp
+    _int_args = to - (method->is_static() ? 19 : 20);
+    _fp_args =  to - 16; //each slot is for a double
+    _fp_identifiers = to - 21;
+    *_fp_identifiers = (1 <<(Argument::n_float_register_parameters_c * 3)) - 1;
+
+    _num_int_reg_args = (method->is_static() ? 1 : 0);
+    _next_double_dex = 0;
+  }
+};
+
+
+IRT_ENTRY(address,
+          InterpreterRuntime::slow_signature_handler(JavaThread* thread,
+                                                     Method* method,
+                                                     intptr_t* from,
+                                                     intptr_t* to))
+  methodHandle m(thread, (Method*)method);
+  assert(m->is_native(), "sanity check");
+
+  // handle arguments
+  SlowSignatureHandler ssh(m, (address)from, to);
+  ssh.iterate(UCONST64(-1));
+
+  // return result handler
+  return Interpreter::result_handler(m->result_type());
+IRT_END