| /* |
| * Copyright (c) 1998, 2017, Oracle and/or its affiliates. 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 "interpreter/interpreter.hpp" |
| #include "interpreter/interpreterRuntime.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "memory/universe.inline.hpp" |
| #include "oops/method.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/icache.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/signature.hpp" |
| |
| |
| #define __ _masm-> |
| |
| |
| // Implementation of SignatureHandlerGenerator |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { |
| move(offset(), jni_offset() + 1); |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
| move(offset(), jni_offset() + 1); |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
| move(offset(), jni_offset() + 2); |
| move(offset() + 1, jni_offset() + 1); |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { |
| box (offset(), jni_offset() + 1); |
| } |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) { |
| __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); |
| __ movl(Address(to(), to_offset * wordSize), temp()); |
| } |
| |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) { |
| __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); |
| __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI |
| Label L; |
| __ jcc(Assembler::notZero, L); |
| __ movptr(temp(), NULL_WORD); |
| __ bind(L); |
| __ movptr(Address(to(), to_offset * wordSize), temp()); |
| } |
| |
| |
| void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) { |
| // generate code to handle arguments |
| iterate(fingerprint); |
| // return result handler |
| __ lea(rax, |
| ExternalAddress((address)Interpreter::result_handler(method()->result_type()))); |
| // return |
| __ ret(0); |
| __ flush(); |
| } |
| |
| |
| Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; } |
| Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; } |
| Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; } |
| |
| |
| // Implementation of SignatureHandlerLibrary |
| |
| void SignatureHandlerLibrary::pd_set_handler(address handler) {} |
| |
| class SlowSignatureHandler: public NativeSignatureIterator { |
| private: |
| address _from; |
| intptr_t* _to; |
| |
| virtual void pass_int() { |
| *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
| _from -= Interpreter::stackElementSize; |
| } |
| |
| virtual void pass_float() { |
| *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
| _from -= Interpreter::stackElementSize; |
| } |
| |
| virtual void pass_long() { |
| _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); |
| _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0)); |
| _to += 2; |
| _from -= 2*Interpreter::stackElementSize; |
| } |
| |
| virtual void pass_object() { |
| // pass address of from |
| intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0)); |
| *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr; |
| _from -= Interpreter::stackElementSize; |
| } |
| |
| public: |
| SlowSignatureHandler(const methodHandle& method, address from, intptr_t* to) : |
| NativeSignatureIterator(method) { |
| _from = from; |
| _to = to + (is_static() ? 2 : 1); |
| } |
| }; |
| |
| 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(m, (address)from, to + 1).iterate((uint64_t)CONST64(-1)); |
| // return result handler |
| return Interpreter::result_handler(m->result_type()); |
| IRT_END |