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/*
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* Copyright (c) 2003, 2010, 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 "interpreter/interpreter.hpp"
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#include "interpreter/interpreterRuntime.hpp"
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#include "memory/allocation.inline.hpp"
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#include "memory/universe.inline.hpp"
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#include "oops/method.hpp"
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#include "oops/oop.inline.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/icache.hpp"
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#include "runtime/interfaceSupport.hpp"
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#include "runtime/signature.hpp"
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#define __ _masm->
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// Implementation of SignatureHandlerGenerator
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Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rlocals; }
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Register InterpreterRuntime::SignatureHandlerGenerator::to() { return sp; }
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Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rscratch1; }
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void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
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const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
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switch (_num_int_args) {
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case 0:
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__ ldr(c_rarg1, src);
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_num_int_args++;
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break;
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case 1:
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__ ldr(c_rarg2, src);
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_num_int_args++;
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break;
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case 2:
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__ ldr(c_rarg3, src);
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_num_int_args++;
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break;
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case 3:
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__ ldr(c_rarg4, src);
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_num_int_args++;
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break;
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case 4:
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__ ldr(c_rarg5, src);
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_num_int_args++;
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break;
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case 5:
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__ ldr(c_rarg6, src);
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_num_int_args++;
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break;
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case 6:
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__ ldr(c_rarg7, src);
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_num_int_args++;
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break;
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default:
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__ ldr(r0, src);
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__ str(r0, Address(to(), _stack_offset));
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_stack_offset += wordSize;
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_num_int_args++;
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break;
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
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const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
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switch (_num_int_args) {
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case 0:
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__ ldr(c_rarg1, src);
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_num_int_args++;
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break;
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case 1:
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__ ldr(c_rarg2, src);
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_num_int_args++;
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break;
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case 2:
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__ ldr(c_rarg3, src);
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_num_int_args++;
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break;
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case 3:
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__ ldr(c_rarg4, src);
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_num_int_args++;
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break;
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case 4:
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__ ldr(c_rarg5, src);
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_num_int_args++;
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break;
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case 5:
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__ ldr(c_rarg6, src);
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_num_int_args++;
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break;
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case 6:
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__ ldr(c_rarg7, src);
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_num_int_args++;
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break;
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default:
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__ ldr(r0, src);
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__ str(r0, Address(to(), _stack_offset));
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_stack_offset += wordSize;
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_num_int_args++;
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break;
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
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const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
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if (_num_fp_args < Argument::n_float_register_parameters_c) {
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__ ldrs(as_FloatRegister(_num_fp_args++), src);
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} else {
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__ ldrh(r0, src);
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__ strh(r0, Address(to(), _stack_offset));
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_stack_offset += wordSize;
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_num_fp_args++;
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
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const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
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if (_num_fp_args < Argument::n_float_register_parameters_c) {
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__ ldrd(as_FloatRegister(_num_fp_args++), src);
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} else {
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__ ldr(r0, src);
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__ str(r0, Address(to(), _stack_offset));
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_stack_offset += wordSize;
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_num_fp_args++;
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
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switch (_num_int_args) {
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case 0:
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assert(offset() == 0, "argument register 1 can only be (non-null) receiver");
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__ add(c_rarg1, from(), Interpreter::local_offset_in_bytes(offset()));
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_num_int_args++;
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break;
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case 1:
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{
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__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
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__ mov(c_rarg2, 0);
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__ ldr(temp(), r0);
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Label L;
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__ cbz(temp(), L);
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__ mov(c_rarg2, r0);
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__ bind(L);
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_num_int_args++;
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break;
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}
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case 2:
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{
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__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
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__ mov(c_rarg3, 0);
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__ ldr(temp(), r0);
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Label L;
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__ cbz(temp(), L);
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__ mov(c_rarg3, r0);
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__ bind(L);
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_num_int_args++;
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break;
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}
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case 3:
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{
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__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
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__ mov(c_rarg4, 0);
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__ ldr(temp(), r0);
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Label L;
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__ cbz(temp(), L);
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__ mov(c_rarg4, r0);
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__ bind(L);
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_num_int_args++;
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break;
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}
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case 4:
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{
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__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
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__ mov(c_rarg5, 0);
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__ ldr(temp(), r0);
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Label L;
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__ cbz(temp(), L);
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__ mov(c_rarg5, r0);
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__ bind(L);
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_num_int_args++;
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break;
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}
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case 5:
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{
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__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
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__ mov(c_rarg6, 0);
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__ ldr(temp(), r0);
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Label L;
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__ cbz(temp(), L);
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__ mov(c_rarg6, r0);
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__ bind(L);
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_num_int_args++;
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break;
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}
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case 6:
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{
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__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
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__ mov(c_rarg7, 0);
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__ ldr(temp(), r0);
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Label L;
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__ cbz(temp(), L);
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__ mov(c_rarg7, r0);
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__ bind(L);
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_num_int_args++;
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break;
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}
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default:
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{
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__ add(r0, from(), Interpreter::local_offset_in_bytes(offset()));
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__ ldr(temp(), r0);
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Label L;
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__ cbnz(temp(), L);
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__ mov(r0, zr);
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__ bind(L);
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__ str(r0, Address(to(), _stack_offset));
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_stack_offset += wordSize;
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_num_int_args++;
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break;
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}
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}
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}
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void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
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// generate code to handle arguments
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iterate(fingerprint);
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// set the call format
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// n.b. allow extra 1 for the JNI_Env in c_rarg0
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unsigned int call_format = ((_num_int_args + 1) << 6) | (_num_fp_args << 2);
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switch (method()->result_type()) {
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case T_VOID:
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call_format |= MacroAssembler::ret_type_void;
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break;
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case T_FLOAT:
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call_format |= MacroAssembler::ret_type_float;
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break;
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case T_DOUBLE:
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call_format |= MacroAssembler::ret_type_double;
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break;
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default:
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call_format |= MacroAssembler::ret_type_integral;
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break;
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}
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// // store the call format in the method
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// __ movw(r0, call_format);
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// __ str(r0, Address(rmethod, Method::call_format_offset()));
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// return result handler
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__ lea(r0, ExternalAddress(Interpreter::result_handler(method()->result_type())));
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__ ret(lr);
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__ flush();
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}
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// Implementation of SignatureHandlerLibrary
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void SignatureHandlerLibrary::pd_set_handler(address handler) {}
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class SlowSignatureHandler
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: public NativeSignatureIterator {
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private:
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address _from;
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intptr_t* _to;
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intptr_t* _int_args;
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intptr_t* _fp_args;
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intptr_t* _fp_identifiers;
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unsigned int _num_int_args;
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unsigned int _num_fp_args;
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virtual void pass_int()
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{
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jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
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_from -= Interpreter::stackElementSize;
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if (_num_int_args < Argument::n_int_register_parameters_c-1) {
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*_int_args++ = from_obj;
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_num_int_args++;
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} else {
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*_to++ = from_obj;
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_num_int_args++;
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}
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}
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virtual void pass_long()
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{
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intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
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_from -= 2*Interpreter::stackElementSize;
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if (_num_int_args < Argument::n_int_register_parameters_c-1) {
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*_int_args++ = from_obj;
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_num_int_args++;
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} else {
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*_to++ = from_obj;
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_num_int_args++;
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}
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}
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virtual void pass_object()
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{
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intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
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_from -= Interpreter::stackElementSize;
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if (_num_int_args < Argument::n_int_register_parameters_c-1) {
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*_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr;
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_num_int_args++;
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} else {
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*_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
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_num_int_args++;
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}
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}
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virtual void pass_float()
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{
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jint from_obj = *(jint*)(_from+Interpreter::local_offset_in_bytes(0));
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_from -= Interpreter::stackElementSize;
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if (_num_fp_args < Argument::n_float_register_parameters_c) {
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*_fp_args++ = from_obj;
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_num_fp_args++;
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} else {
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*_to++ = from_obj;
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_num_int_args++;
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}
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}
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virtual void pass_double()
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{
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intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
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_from -= 2*Interpreter::stackElementSize;
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if (_num_fp_args < Argument::n_float_register_parameters_c) {
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*_fp_args++ = from_obj;
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*_fp_identifiers |= (1 << _num_fp_args); // mark as double
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_num_fp_args++;
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} else {
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*_to++ = from_obj;
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_num_int_args++;
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}
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}
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public:
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SlowSignatureHandler(methodHandle method, address from, intptr_t* to)
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: NativeSignatureIterator(method)
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{
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_from = from;
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_to = to;
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_int_args = to - (method->is_static() ? 16 : 17);
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_fp_args = to - 8;
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_fp_identifiers = to - 9;
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*(int*) _fp_identifiers = 0;
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_num_int_args = (method->is_static() ? 1 : 0);
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_num_fp_args = 0;
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}
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// n.b. allow extra 1 for the JNI_Env in c_rarg0
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unsigned int get_call_format()
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{
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unsigned int call_format = ((_num_int_args + 1) << 6) | (_num_fp_args << 2);
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switch (method()->result_type()) {
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case T_VOID:
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call_format |= MacroAssembler::ret_type_void;
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break;
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case T_FLOAT:
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call_format |= MacroAssembler::ret_type_float;
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break;
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case T_DOUBLE:
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call_format |= MacroAssembler::ret_type_double;
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break;
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default:
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call_format |= MacroAssembler::ret_type_integral;
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break;
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}
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return call_format;
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}
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};
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IRT_ENTRY(address,
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InterpreterRuntime::slow_signature_handler(JavaThread* thread,
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Method* method,
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intptr_t* from,
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intptr_t* to))
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methodHandle m(thread, (Method*)method);
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assert(m->is_native(), "sanity check");
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// handle arguments
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SlowSignatureHandler ssh(m, (address)from, to);
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421 |
ssh.iterate(UCONST64(-1));
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|
422 |
|
|
423 |
// // set the call format
|
|
424 |
// method->set_call_format(ssh.get_call_format());
|
|
425 |
|
|
426 |
// return result handler
|
|
427 |
return Interpreter::result_handler(m->result_type());
|
|
428 |
IRT_END
|