author | jcm |
Thu, 24 May 2018 22:21:00 -0700 | |
changeset 50261 | 3fd701692627 |
parent 49480 | d7df2dd501ce |
child 54523 | 5df03f58d25b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1998, 2018, Oracle and/or its affiliates. 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/interp_masm.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.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.inline.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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InterpreterRuntime::SignatureHandlerGenerator::SignatureHandlerGenerator(const methodHandle& method, CodeBuffer* buffer) : |
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NativeSignatureIterator(method) { |
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_masm = new MacroAssembler(buffer); |
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#ifdef AMD64 |
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#ifdef _WIN64 |
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_num_args = (method->is_static() ? 1 : 0); |
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_stack_offset = (Argument::n_int_register_parameters_c+1)* wordSize; // don't overwrite return address |
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#else |
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_num_int_args = (method->is_static() ? 1 : 0); |
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_num_fp_args = 0; |
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_stack_offset = wordSize; // don't overwrite return address |
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#endif // _WIN64 |
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#endif // AMD64 |
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} |
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void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { |
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move(offset(), jni_offset() + 1); |
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} |
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void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { |
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move(offset(), jni_offset() + 1); |
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} |
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void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { |
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move(offset(), jni_offset() + 2); |
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move(offset() + 1, jni_offset() + 1); |
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} |
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void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { |
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box (offset(), jni_offset() + 1); |
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} |
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void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) { |
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__ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); |
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__ movl(Address(to(), to_offset * wordSize), temp()); |
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} |
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void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) { |
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__ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset))); |
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__ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI |
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Label L; |
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__ jcc(Assembler::notZero, L); |
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__ movptr(temp(), NULL_WORD); |
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__ bind(L); |
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__ movptr(Address(to(), to_offset * wordSize), temp()); |
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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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// return result handler |
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__ lea(rax, |
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ExternalAddress((address)Interpreter::result_handler(method()->result_type()))); |
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// return |
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__ ret(0); |
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__ flush(); |
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} |
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Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; } |
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Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; } |
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Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; } |
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// Implementation of SignatureHandlerLibrary |
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void SignatureHandlerLibrary::pd_set_handler(address handler) {} |
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class SlowSignatureHandler: public NativeSignatureIterator { |
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private: |
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address _from; |
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intptr_t* _to; |
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virtual void pass_int() { |
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*_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
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_from -= Interpreter::stackElementSize; |
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} |
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virtual void pass_float() { |
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*_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); |
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_from -= Interpreter::stackElementSize; |
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} |
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virtual void pass_long() { |
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_to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); |
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_to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0)); |
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_to += 2; |
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_from -= 2*Interpreter::stackElementSize; |
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} |
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virtual void pass_object() { |
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// pass address of from |
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intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0)); |
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*_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr; |
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_from -= Interpreter::stackElementSize; |
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} |
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public: |
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SlowSignatureHandler(const methodHandle& method, address from, intptr_t* to) : |
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NativeSignatureIterator(method) { |
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_from = from; |
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_to = to + (is_static() ? 2 : 1); |
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} |
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}; |
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IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, Method* method, intptr_t* from, 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(m, (address)from, to + 1).iterate((uint64_t)CONST64(-1)); |
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// return result handler |
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return Interpreter::result_handler(m->result_type()); |
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IRT_END |