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/*
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* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2014, Red Hat Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#include "precompiled.hpp"
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#include "c1/c1_CodeStubs.hpp"
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#include "c1/c1_FrameMap.hpp"
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#include "c1/c1_LIRAssembler.hpp"
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#include "c1/c1_MacroAssembler.hpp"
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#include "c1/c1_Runtime1.hpp"
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#include "nativeInst_aarch64.hpp"
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#include "runtime/sharedRuntime.hpp"
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#include "vmreg_aarch64.inline.hpp"
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#if INCLUDE_ALL_GCS
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#include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
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#endif
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#define __ ce->masm()->
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void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
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__ bind(_entry);
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ce->store_parameter(_method->as_register(), 1);
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ce->store_parameter(_bci, 0);
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__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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__ b(_continuation);
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}
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RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,
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bool throw_index_out_of_bounds_exception)
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: _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)
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, _index(index)
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{
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assert(info != NULL, "must have info");
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_info = new CodeEmitInfo(info);
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}
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void RangeCheckStub::emit_code(LIR_Assembler* ce) {
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__ bind(_entry);
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if (_info->deoptimize_on_exception()) {
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address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
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__ far_call(RuntimeAddress(a));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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debug_only(__ should_not_reach_here());
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return;
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}
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if (_index->is_cpu_register()) {
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__ mov(rscratch1, _index->as_register());
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} else {
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__ mov(rscratch1, _index->as_jint());
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}
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Runtime1::StubID stub_id;
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if (_throw_index_out_of_bounds_exception) {
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stub_id = Runtime1::throw_index_exception_id;
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} else {
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stub_id = Runtime1::throw_range_check_failed_id;
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}
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__ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL, rscratch2);
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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debug_only(__ should_not_reach_here());
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}
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PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
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_info = new CodeEmitInfo(info);
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}
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void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
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__ bind(_entry);
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address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
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__ far_call(RuntimeAddress(a));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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debug_only(__ should_not_reach_here());
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}
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void DivByZeroStub::emit_code(LIR_Assembler* ce) {
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if (_offset != -1) {
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ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
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}
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__ bind(_entry);
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__ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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#ifdef ASSERT
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__ should_not_reach_here();
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#endif
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}
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// Implementation of NewInstanceStub
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NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
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_result = result;
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_klass = klass;
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_klass_reg = klass_reg;
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_info = new CodeEmitInfo(info);
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assert(stub_id == Runtime1::new_instance_id ||
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stub_id == Runtime1::fast_new_instance_id ||
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stub_id == Runtime1::fast_new_instance_init_check_id,
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"need new_instance id");
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_stub_id = stub_id;
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}
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void NewInstanceStub::emit_code(LIR_Assembler* ce) {
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assert(__ rsp_offset() == 0, "frame size should be fixed");
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__ bind(_entry);
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__ mov(r3, _klass_reg->as_register());
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__ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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assert(_result->as_register() == r0, "result must in r0,");
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__ b(_continuation);
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}
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// Implementation of NewTypeArrayStub
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// Implementation of NewTypeArrayStub
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NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
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_klass_reg = klass_reg;
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_length = length;
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_result = result;
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_info = new CodeEmitInfo(info);
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}
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void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
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assert(__ rsp_offset() == 0, "frame size should be fixed");
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__ bind(_entry);
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assert(_length->as_register() == r19, "length must in r19,");
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assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
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__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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assert(_result->as_register() == r0, "result must in r0");
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__ b(_continuation);
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}
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// Implementation of NewObjectArrayStub
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NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
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_klass_reg = klass_reg;
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_result = result;
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_length = length;
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_info = new CodeEmitInfo(info);
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}
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void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
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assert(__ rsp_offset() == 0, "frame size should be fixed");
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__ bind(_entry);
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assert(_length->as_register() == r19, "length must in r19,");
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assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
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__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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assert(_result->as_register() == r0, "result must in r0");
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__ b(_continuation);
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}
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// Implementation of MonitorAccessStubs
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MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
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: MonitorAccessStub(obj_reg, lock_reg)
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{
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_info = new CodeEmitInfo(info);
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}
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void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
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assert(__ rsp_offset() == 0, "frame size should be fixed");
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__ bind(_entry);
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ce->store_parameter(_obj_reg->as_register(), 1);
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ce->store_parameter(_lock_reg->as_register(), 0);
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Runtime1::StubID enter_id;
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if (ce->compilation()->has_fpu_code()) {
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enter_id = Runtime1::monitorenter_id;
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} else {
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enter_id = Runtime1::monitorenter_nofpu_id;
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}
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__ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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__ b(_continuation);
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}
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void MonitorExitStub::emit_code(LIR_Assembler* ce) {
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__ bind(_entry);
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if (_compute_lock) {
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// lock_reg was destroyed by fast unlocking attempt => recompute it
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ce->monitor_address(_monitor_ix, _lock_reg);
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}
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ce->store_parameter(_lock_reg->as_register(), 0);
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// note: non-blocking leaf routine => no call info needed
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Runtime1::StubID exit_id;
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if (ce->compilation()->has_fpu_code()) {
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exit_id = Runtime1::monitorexit_id;
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} else {
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exit_id = Runtime1::monitorexit_nofpu_id;
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}
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__ adr(lr, _continuation);
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__ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));
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}
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// Implementation of patching:
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// - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
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// - Replace original code with a call to the stub
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// At Runtime:
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// - call to stub, jump to runtime
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// - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
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// - in runtime: after initializing class, restore original code, reexecute instruction
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int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
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void PatchingStub::align_patch_site(MacroAssembler* masm) {
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}
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void PatchingStub::emit_code(LIR_Assembler* ce) {
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assert(false, "AArch64 should not use C1 runtime patching");
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}
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void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
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__ bind(_entry);
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__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
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ce->add_call_info_here(_info);
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DEBUG_ONLY(__ should_not_reach_here());
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}
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void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
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address a;
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if (_info->deoptimize_on_exception()) {
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// Deoptimize, do not throw the exception, because it is probably wrong to do it here.
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a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
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} else {
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a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
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}
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ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
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__ bind(_entry);
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__ far_call(RuntimeAddress(a));
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ce->add_call_info_here(_info);
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ce->verify_oop_map(_info);
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debug_only(__ should_not_reach_here());
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}
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void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
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assert(__ rsp_offset() == 0, "frame size should be fixed");
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__ bind(_entry);
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// pass the object in a scratch register because all other registers
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// must be preserved
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if (_obj->is_cpu_register()) {
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__ mov(rscratch1, _obj->as_register());
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}
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__ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2);
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ce->add_call_info_here(_info);
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debug_only(__ should_not_reach_here());
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}
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void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
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//---------------slow case: call to native-----------------
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__ bind(_entry);
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// Figure out where the args should go
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// This should really convert the IntrinsicID to the Method* and signature
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// but I don't know how to do that.
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//
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VMRegPair args[5];
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BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
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SharedRuntime::java_calling_convention(signature, args, 5, true);
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// push parameters
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// (src, src_pos, dest, destPos, length)
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Register r[5];
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r[0] = src()->as_register();
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r[1] = src_pos()->as_register();
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r[2] = dst()->as_register();
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r[3] = dst_pos()->as_register();
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r[4] = length()->as_register();
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// next registers will get stored on the stack
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for (int i = 0; i < 5 ; i++ ) {
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VMReg r_1 = args[i].first();
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if (r_1->is_stack()) {
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int st_off = r_1->reg2stack() * wordSize;
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__ str (r[i], Address(sp, st_off));
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} else {
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assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
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}
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}
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ce->align_call(lir_static_call);
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ce->emit_static_call_stub();
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Address resolve(SharedRuntime::get_resolve_static_call_stub(),
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relocInfo::static_call_type);
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__ trampoline_call(resolve);
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ce->add_call_info_here(info());
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#ifndef PRODUCT
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__ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
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__ incrementw(Address(rscratch2));
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#endif
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__ b(_continuation);
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}
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/////////////////////////////////////////////////////////////////////////////
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#if INCLUDE_ALL_GCS
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void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {
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// At this point we know that marking is in progress.
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// If do_load() is true then we have to emit the
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// load of the previous value; otherwise it has already
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// been loaded into _pre_val.
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__ bind(_entry);
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assert(pre_val()->is_register(), "Precondition.");
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Register pre_val_reg = pre_val()->as_register();
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if (do_load()) {
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ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/);
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}
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__ cbz(pre_val_reg, _continuation);
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ce->store_parameter(pre_val()->as_register(), 0);
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__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_pre_barrier_slow_id)));
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__ b(_continuation);
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}
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jbyte* G1PostBarrierStub::_byte_map_base = NULL;
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jbyte* G1PostBarrierStub::byte_map_base_slow() {
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BarrierSet* bs = Universe::heap()->barrier_set();
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assert(bs->is_a(BarrierSet::G1SATBCTLogging),
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"Must be if we're using this.");
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return ((G1SATBCardTableModRefBS*)bs)->byte_map_base;
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}
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void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
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__ bind(_entry);
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assert(addr()->is_register(), "Precondition.");
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assert(new_val()->is_register(), "Precondition.");
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381 |
Register new_val_reg = new_val()->as_register();
|
|
382 |
__ cbz(new_val_reg, _continuation);
|
|
383 |
ce->store_parameter(addr()->as_pointer_register(), 0);
|
|
384 |
__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id)));
|
|
385 |
__ b(_continuation);
|
|
386 |
}
|
|
387 |
|
|
388 |
#endif // INCLUDE_ALL_GCS
|
|
389 |
/////////////////////////////////////////////////////////////////////////////
|
|
390 |
|
|
391 |
#undef __
|