--- /dev/null	2018-09-25 19:24:16.000000000 +0300
+++ new/src/hotspot/cpu/aarch32/c1_CodeStubs_aarch32.cpp	2018-09-25 19:24:16.000000000 +0300
@@ -0,0 +1,531 @@
+/*
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, Red Hat Inc. 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 "c1/c1_CodeStubs.hpp"
+#include "c1/c1_FrameMap.hpp"
+#include "c1/c1_LIRAssembler.hpp"
+#include "c1/c1_MacroAssembler.hpp"
+#include "c1/c1_Runtime1.hpp"
+#include "nativeInst_aarch32.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "vmreg_aarch32.inline.hpp"
+
+
+#define __ ce->masm()->
+
+#define should_not_reach_here() should_not_reach_here_line(__FILE__, __LINE__)
+
+void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  Metadata *m = _method->as_constant_ptr()->as_metadata();
+  __ mov_metadata(rscratch1, m);
+  ce->store_parameter(rscratch1, 1);
+  ce->store_parameter(_bci, 0);
+  __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  __ b(_continuation);
+}
+
+RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, LIR_Opr array)
+  : _throw_index_out_of_bounds_exception(false), _index(index), _array(array) {
+  assert(info != NULL, "must have info");
+  _info = new CodeEmitInfo(info);
+}
+
+RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index)
+  : _throw_index_out_of_bounds_exception(true), _index(index), _array(NULL) {
+  assert(info != NULL, "must have info");
+  _info = new CodeEmitInfo(info);
+}
+
+void RangeCheckStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  if (_info->deoptimize_on_exception()) {
+    address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
+    __ far_call(RuntimeAddress(a));
+    ce->add_call_info_here(_info);
+    ce->verify_oop_map(_info);
+    debug_only(__ should_not_reach_here());
+    return;
+  }
+
+  if (_index->is_cpu_register()) {
+    __ mov(rscratch1, _index->as_register());
+  } else {
+    __ mov(rscratch1, _index->as_jint());
+  }
+  Runtime1::StubID stub_id;
+  if (_throw_index_out_of_bounds_exception) {
+    stub_id = Runtime1::throw_index_exception_id;
+  } else {
+    assert(_array != NULL, "sanity");
+    __ mov(rscratch2, _array->as_pointer_register());
+    stub_id = Runtime1::throw_range_check_failed_id;
+  }
+  __ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL);
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  debug_only(__ should_not_reach_here());
+}
+
+PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
+  _info = new CodeEmitInfo(info);
+}
+
+void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
+  __ far_call(RuntimeAddress(a));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  debug_only(__ should_not_reach_here());
+}
+
+void DivByZeroStub::emit_code(LIR_Assembler* ce) {
+  if (_offset != -1) {
+    ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
+  }
+  __ bind(_entry);
+  __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+#ifdef ASSERT
+  __ should_not_reach_here();
+#endif
+}
+
+
+
+// Implementation of NewInstanceStub
+
+NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
+  _result = result;
+  _klass = klass;
+  _klass_reg = klass_reg;
+  _info = new CodeEmitInfo(info);
+  assert(stub_id == Runtime1::new_instance_id                 ||
+         stub_id == Runtime1::fast_new_instance_id            ||
+         stub_id == Runtime1::fast_new_instance_init_check_id,
+         "need new_instance id");
+  _stub_id   = stub_id;
+}
+
+
+
+void NewInstanceStub::emit_code(LIR_Assembler* ce) {
+  assert(__ rsp_offset() == 0, "frame size should be fixed");
+  __ bind(_entry);
+  __ mov(r3, _klass_reg->as_register());
+  __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  assert(_result->as_register() == r0, "result must in r0,");
+  __ b(_continuation);
+}
+
+
+// Implementation of NewTypeArrayStub
+
+// Implementation of NewTypeArrayStub
+
+NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
+  _klass_reg = klass_reg;
+  _length = length;
+  _result = result;
+  _info = new CodeEmitInfo(info);
+}
+
+
+void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
+  assert(__ rsp_offset() == 0, "frame size should be fixed");
+  __ bind(_entry);
+  assert(_length->as_register() == r6, "length must in r6,");
+  assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
+  __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  assert(_result->as_register() == r0, "result must in r0");
+  __ b(_continuation);
+}
+
+
+// Implementation of NewObjectArrayStub
+
+NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
+  _klass_reg = klass_reg;
+  _result = result;
+  _length = length;
+  _info = new CodeEmitInfo(info);
+}
+
+
+void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
+  assert(__ rsp_offset() == 0, "frame size should be fixed");
+  __ bind(_entry);
+  assert(_length->as_register() == r6, "length must in r6");
+  assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
+  __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  assert(_result->as_register() == r0, "result must in r0");
+  __ b(_continuation);
+}
+// Implementation of MonitorAccessStubs
+
+MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
+: MonitorAccessStub(obj_reg, lock_reg)
+{
+  _info = new CodeEmitInfo(info);
+}
+
+
+void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
+  assert(__ rsp_offset() == 0, "frame size should be fixed");
+  __ bind(_entry);
+  ce->store_parameter(_obj_reg->as_register(),  1);
+  ce->store_parameter(_lock_reg->as_register(), 0);
+  Runtime1::StubID enter_id;
+  if (ce->compilation()->has_fpu_code()) {
+    enter_id = Runtime1::monitorenter_id;
+  } else {
+    enter_id = Runtime1::monitorenter_nofpu_id;
+  }
+  __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  __ b(_continuation);
+}
+
+
+void MonitorExitStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  if (_compute_lock) {
+    // lock_reg was destroyed by fast unlocking attempt => recompute it
+    ce->monitor_address(_monitor_ix, _lock_reg);
+  }
+  ce->store_parameter(_lock_reg->as_register(), 0);
+  // note: non-blocking leaf routine => no call info needed
+  Runtime1::StubID exit_id;
+  if (ce->compilation()->has_fpu_code()) {
+    exit_id = Runtime1::monitorexit_id;
+  } else {
+    exit_id = Runtime1::monitorexit_nofpu_id;
+  }
+  __ adr(lr, _continuation);
+  __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));
+}
+
+
+// Implementation of patching:
+// - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
+// - Replace original code with a call to the stub
+// At Runtime:
+// - call to stub, jump to runtime
+// - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
+// - in runtime: after initializing class, restore original code, reexecute instruction
+
+int PatchingStub::_patch_info_offset = 0;
+
+void PatchingStub::align_patch_site(MacroAssembler* masm) {
+}
+
+void PatchingStub::emit_code(LIR_Assembler* ce) {
+  // NativeCall::instruction_size is dynamically calculated based on CPU,
+  // armv7 -> 3 instructions, armv6 -> 5 instructions. Initialize _patch_info_offset
+  // here, when CPU is determined already.
+  if (!_patch_info_offset)
+    _patch_info_offset = -NativeCall::instruction_size;
+  assert(_patch_info_offset == -NativeCall::instruction_size, "must not change");
+  assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF, "not enough room for call");
+
+  Label call_patch;
+
+  // static field accesses have special semantics while the class
+  // initializer is being run so we emit a test which can be used to
+  // check that this code is being executed by the initializing
+  // thread.
+  address being_initialized_entry = __ pc();
+  if (CommentedAssembly) {
+    __ block_comment(" patch template");
+  }
+  address start = __ pc();
+  if (_id == load_klass_id) {
+    // produce a copy of the load klass instruction for use by the being initialized case
+    int metadata_index = -1;
+    CodeSection* cs = __ code_section();
+    RelocIterator iter(cs, (address)_pc_start, (address)_pc_start+1);
+    while (iter.next()) {
+      if (iter.type() == relocInfo::metadata_type) {
+        metadata_Relocation* r = iter.metadata_reloc();
+        assert(metadata_index == -1, "uninitalized yet");
+        metadata_index = r->metadata_index();
+        break;
+      }
+    }
+    assert(metadata_index != -1, "initialized");
+    __ relocate(metadata_Relocation::spec(metadata_index));
+    __ patchable_load(_obj, __ pc());
+    while ((intx) __ pc() - (intx) start < NativeCall::instruction_size) {
+      __ nop();
+    }
+#ifdef ASSERT
+    for (int i = 0; i < _bytes_to_copy; i++) {
+      assert(*(_pc_start + i) == *(start + i), "should be the same code");
+    }
+#endif
+  } else if (_id == load_mirror_id || _id == load_appendix_id) {
+    // produce a copy of the load mirror instruction for use by the being
+    // initialized case
+    int oop_index = -1;
+    CodeSection* cs = __ code_section();
+    RelocIterator iter(cs, (address)_pc_start, (address)_pc_start+1);
+    while (iter.next()) {
+      if (iter.type() == relocInfo::oop_type) {
+        oop_Relocation* r = iter.oop_reloc();
+        assert(oop_index == -1, "uninitalized yet");
+        oop_index = r->oop_index();
+        break;
+      }
+    }
+    assert(oop_index != -1, "initialized");
+    __ relocate(oop_Relocation::spec(oop_index));
+    __ patchable_load(_obj, __ pc());
+    while ((intx) __ pc() - (intx) start < NativeCall::instruction_size) {
+      __ nop();
+    }
+#ifdef ASSERT
+    for (int i = 0; i < _bytes_to_copy; i++) {
+      assert(*(_pc_start + i) == *(start + i), "should be the same code");
+    }
+#endif
+  } else if (_id == access_field_id) {
+    // make a copy the code which is going to be patched.
+    address const_addr = (address) -1;
+    CodeSection* cs = __ code_section();
+    RelocIterator iter(cs, (address)_pc_start, (address)_pc_start+1);
+    while (iter.next()) {
+      if (iter.type() == relocInfo::section_word_type) {
+        section_word_Relocation* r = iter.section_word_reloc();
+        assert(const_addr == (address) -1, "uninitalized yet");
+        const_addr = r->target();
+        break;
+      }
+    }
+    assert(const_addr != (address) -1, "initialized");
+    __ relocate(section_word_Relocation::spec(const_addr, CodeBuffer::SECT_CONSTS));
+    __ patchable_load(rscratch1, const_addr);
+    while ((intx) __ pc() - (intx) start < NativeCall::instruction_size) {
+      __ nop();
+    }
+#ifdef ASSERT
+    intptr_t* from = (intptr_t*) start;
+    intptr_t* to = (intptr_t*) _pc_start;
+    assert(from[0] == to[0], "should be same (nop)");
+    assert(from[1] == to[1], "should be same (barrier)");
+    //TODO: update
+    //XXX: update nativeInst_aarch32..?
+    #if 0
+    assert(NativeFarLdr::from((address) (from + 2))->data_addr()
+        == NativeFarLdr::from((address) (to + 2))->data_addr(),
+        "should load from one addr)");
+#endif
+    for (int i = 4 * NativeInstruction::arm_insn_sz; i < _bytes_to_copy; i++) {
+      assert(*(_pc_start + i) == *(start + i), "should be the same code");
+    }
+#endif
+  } else {
+    ShouldNotReachHere();
+  }
+
+  int bytes_to_skip = _bytes_to_copy;
+
+  if (_id == load_mirror_id) {
+    int offset = __ offset();
+    if (CommentedAssembly) {
+      __ block_comment(" being_initialized check");
+    }
+    assert(_obj != noreg, "must be a valid register");
+    // Load without verification to keep code size small. We need it because
+    // begin_initialized_entry_offset has to fit in a byte. Also, we know it's not null.
+    __ ldr(rscratch1, Address(_obj, java_lang_Class::klass_offset_in_bytes()));
+    __ ldr(rscratch1, Address(rscratch1, InstanceKlass::init_thread_offset()));
+    __ cmp(rthread, rscratch1);
+    __ b(call_patch, Assembler::NE);
+
+    // access_field patches may execute the patched code before it's
+    // copied back into place so we need to jump back into the main
+    // code of the nmethod to continue execution.
+    __ b(_patch_site_continuation);
+    // make sure this extra code gets skipped
+    bytes_to_skip += __ offset() - offset;
+  }
+
+  // Now emit the patch record telling the runtime how to find the
+  // pieces of the patch.  We only need 3 bytes but it has to be
+  // aligned as an instruction so emit 4 bytes.
+  int sizeof_patch_record = 4;
+  bytes_to_skip += sizeof_patch_record;
+
+  // emit the offsets needed to find the code to patch
+  int being_initialized_entry_offset = __ pc() - being_initialized_entry + sizeof_patch_record;
+
+  __ emit_int8(0);
+  __ emit_int8(being_initialized_entry_offset);
+  __ emit_int8(bytes_to_skip);
+  __ emit_int8(0);
+
+  address patch_info_pc = __ pc();
+
+  address entry = __ pc();
+  NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
+  address target = NULL;
+  relocInfo::relocType reloc_type = relocInfo::none;
+  switch (_id) {
+    case access_field_id:  target = Runtime1::entry_for(Runtime1::access_field_patching_id); reloc_type = relocInfo::section_word_type; break;
+    case load_klass_id:    target = Runtime1::entry_for(Runtime1::load_klass_patching_id); reloc_type = relocInfo::metadata_type; break;
+    case load_mirror_id:   target = Runtime1::entry_for(Runtime1::load_mirror_patching_id); reloc_type = relocInfo::oop_type; break;
+    case load_appendix_id: target = Runtime1::entry_for(Runtime1::load_appendix_patching_id); reloc_type = relocInfo::oop_type; break;
+    default: ShouldNotReachHere();
+  }
+  __ bind(call_patch);
+
+  if (CommentedAssembly) {
+    __ block_comment("patch entry point");
+  }
+  __ mov(rscratch1, RuntimeAddress(target));
+  __ bl(rscratch1);
+  // pad with nops to globally known upper bound of patch site size
+  while (patch_info_pc - __ pc() < _patch_info_offset)
+    __ nop();
+  assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change, required by shared code");
+  ce->add_call_info_here(_info);
+  int jmp_off = __ offset();
+  __ b(_patch_site_entry);
+  // Add enough nops so deoptimization can overwrite the jmp above with a call
+  // and not destroy the world.
+  for (int j = __ offset() ; j < jmp_off + NativeCall::instruction_size; j += NativeInstruction::arm_insn_sz) {
+    __ nop();
+  }
+
+  CodeSection* cs = __ code_section();
+  RelocIterator iter(cs, (address)_pc_start, (address)_pc_start+1);
+  relocInfo::change_reloc_info_for_address(&iter, (address)_pc_start, reloc_type, relocInfo::none);
+}
+
+
+void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
+  __ bind(_entry);
+  ce->store_parameter(_trap_request, 0);
+  __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
+  ce->add_call_info_here(_info);
+  DEBUG_ONLY(__ should_not_reach_here());
+}
+
+
+void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
+  address a;
+  if (_info->deoptimize_on_exception()) {
+    // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
+    a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
+  } else {
+    a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
+  }
+
+  ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
+  __ bind(_entry);
+  __ far_call(RuntimeAddress(a));
+  ce->add_call_info_here(_info);
+  ce->verify_oop_map(_info);
+  debug_only(__ should_not_reach_here());
+}
+
+
+void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
+  assert(__ rsp_offset() == 0, "frame size should be fixed");
+
+  __ bind(_entry);
+  // pass the object in a scratch register because all other registers
+  // must be preserved
+  if (_obj->is_cpu_register()) {
+    __ mov(rscratch1, _obj->as_register());
+  }
+  __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL);
+  ce->add_call_info_here(_info);
+  debug_only(__ should_not_reach_here());
+}
+
+
+void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
+  //---------------slow case: call to native-----------------
+  __ bind(_entry);
+  // Figure out where the args should go
+  // This should really convert the IntrinsicID to the Method* and signature
+  // but I don't know how to do that.
+  //
+  VMRegPair args[5];
+  BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
+  SharedRuntime::java_calling_convention(signature, args, 5, true);
+
+  // push parameters
+  // (src, src_pos, dest, destPos, length)
+  Register r[5];
+  r[0] = src()->as_register();
+  r[1] = src_pos()->as_register();
+  r[2] = dst()->as_register();
+  r[3] = dst_pos()->as_register();
+  r[4] = length()->as_register();
+
+  // next registers will get stored on the stack
+  for (int i = 0; i < 5 ; i++ ) {
+    VMReg r_1 = args[i].first();
+    if (r_1->is_stack()) {
+      int st_off = r_1->reg2stack() * wordSize;
+      __ str (r[i], Address(sp, st_off));
+    } else {
+      assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
+    }
+  }
+
+  ce->align_call(lir_static_call);
+
+  ce->emit_static_call_stub();
+  Address resolve(SharedRuntime::get_resolve_static_call_stub(),
+                  relocInfo::static_call_type);
+  __ trampoline_call(resolve);
+  ce->add_call_info_here(info());
+
+#ifndef PRODUCT
+  __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
+  __ increment(Address(rscratch2));
+#endif
+
+  __ b(_continuation);
+}
+
+#undef __