| /* |
| * Copyright (c) 2016, 2018, 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 "interpreter/interp_masm.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "interpreter/interpreterRuntime.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "memory/universe.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/icache.hpp" |
| #include "runtime/interfaceSupport.inline.hpp" |
| #include "runtime/signature.hpp" |
| |
| // Access macros for Java and C arguments. |
| // First Java argument is at index-1. |
| #define locals_j_arg_at(index) Address(Z_R1/*locals*/, in_ByteSize((-(index)*wordSize))) |
| |
| #define __ _masm-> |
| |
| static int sp_c_int_arg_offset(int arg_nr, int fp_arg_nr) { |
| int int_arg_nr = arg_nr-fp_arg_nr; |
| |
| // arg_nr, fp_arg_nr start with 1 => int_arg_nr starts with 0 |
| if (int_arg_nr < 5) { |
| return int_arg_nr * wordSize + _z_abi(carg_1); |
| } |
| int offset = int_arg_nr - 5 + (fp_arg_nr > 4 ? fp_arg_nr - 4 : 0); |
| return offset * wordSize + _z_abi(remaining_cargs); |
| } |
| |
| static int sp_c_fp_arg_offset(int arg_nr, int fp_arg_nr) { |
| int int_arg_nr = arg_nr-fp_arg_nr; |
| |
| // Arg_nr, fp_arg_nr start with 1 => int_arg_nr starts with 0. |
| if (fp_arg_nr < 5) { |
| return (fp_arg_nr - 1 ) * wordSize + _z_abi(cfarg_1); |
| } |
| int offset = fp_arg_nr - 5 + (int_arg_nr > 4 ? int_arg_nr - 4 : 0); |
| return offset * wordSize + _z_abi(remaining_cargs); |
| } |
| |
| // Implementation of SignatureHandlerGenerator |
| InterpreterRuntime::SignatureHandlerGenerator::SignatureHandlerGenerator( |
| const methodHandle& method, CodeBuffer* buffer) : NativeSignatureIterator(method) { |
| _masm = new MacroAssembler(buffer); |
| _fp_arg_nr = 0; |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { |
| int int_arg_nr = jni_offset() - _fp_arg_nr; |
| Register r = (int_arg_nr < 5 /*max_int_register_arguments*/) ? |
| as_Register(int_arg_nr) + Z_ARG1->encoding() : Z_R0; |
| |
| __ z_lgf(r, locals_j_arg_at(offset())); |
| if (DEBUG_ONLY(true ||) int_arg_nr >= 5) { |
| __ z_stg(r, sp_c_int_arg_offset(jni_offset(), _fp_arg_nr), Z_SP); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
| int int_arg_nr = jni_offset() - _fp_arg_nr; |
| Register r = (int_arg_nr < 5 /*max_int_register_arguments*/) ? |
| as_Register(int_arg_nr) + Z_ARG1->encoding() : Z_R0; |
| |
| __ z_lg(r, locals_j_arg_at(offset() + 1)); // Long resides in upper slot. |
| if (DEBUG_ONLY(true ||) int_arg_nr >= 5) { |
| __ z_stg(r, sp_c_int_arg_offset(jni_offset(), _fp_arg_nr), Z_SP); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
| FloatRegister fp_reg = (_fp_arg_nr < 4/*max_fp_register_arguments*/) ? |
| as_FloatRegister((_fp_arg_nr * 2) + Z_FARG1->encoding()) : Z_F1; |
| _fp_arg_nr++; |
| __ z_ley(fp_reg, locals_j_arg_at(offset())); |
| if (DEBUG_ONLY(true ||) _fp_arg_nr > 4) { |
| __ z_ste(fp_reg, sp_c_fp_arg_offset(jni_offset(), _fp_arg_nr) + 4, Z_SP); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_double() { |
| FloatRegister fp_reg = (_fp_arg_nr < 4/*max_fp_register_arguments*/) ? |
| as_FloatRegister((_fp_arg_nr*2) + Z_FARG1->encoding()) : Z_F1; |
| _fp_arg_nr++; |
| __ z_ldy(fp_reg, locals_j_arg_at(offset()+1)); |
| if (DEBUG_ONLY(true ||) _fp_arg_nr > 4) { |
| __ z_std(fp_reg, sp_c_fp_arg_offset(jni_offset(), _fp_arg_nr), Z_SP); |
| } |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { |
| int int_arg_nr = jni_offset() - _fp_arg_nr; |
| Register r = (int_arg_nr < 5 /*max_int_register_arguments*/) ? |
| as_Register(int_arg_nr) + Z_ARG1->encoding() : Z_R0; |
| |
| // The handle for a receiver will never be null. |
| bool do_NULL_check = offset() != 0 || is_static(); |
| |
| Label do_null; |
| if (do_NULL_check) { |
| __ clear_reg(r, true, false); |
| __ load_and_test_long(Z_R0, locals_j_arg_at(offset())); |
| __ z_bre(do_null); |
| } |
| __ add2reg(r, -offset() * wordSize, Z_R1 /* locals */); |
| __ bind(do_null); |
| if (DEBUG_ONLY(true ||) int_arg_nr >= 5) { |
| __ z_stg(r, sp_c_int_arg_offset(jni_offset(), _fp_arg_nr), Z_SP); |
| } |
| } |
| |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) { |
| __ z_lgr(Z_R1, Z_ARG1); // Z_R1 is used in locals_j_arg_at(index) macro. |
| |
| // Generate code to handle arguments. |
| iterate(fingerprint); |
| __ load_const_optimized(Z_RET, AbstractInterpreter::result_handler(method()->result_type())); |
| __ z_br(Z_R14); |
| __ flush(); |
| } |
| |
| #undef __ |
| |
| // Implementation of SignatureHandlerLibrary |
| |
| void SignatureHandlerLibrary::pd_set_handler(address handler) {} |
| |
| IRT_ENTRY(address, InterpreterRuntime::get_signature(JavaThread* thread, Method* method)) |
| methodHandle m(thread, method); |
| assert(m->is_native(), "sanity check"); |
| Symbol *s = m->signature(); |
| return (address) s->base(); |
| IRT_END |
| |
| IRT_ENTRY(address, InterpreterRuntime::get_result_handler(JavaThread* thread, Method* method)) |
| methodHandle m(thread, method); |
| assert(m->is_native(), "sanity check"); |
| return AbstractInterpreter::result_handler(m->result_type()); |
| IRT_END |