Mercurial > hg > truffle
view src/cpu/x86/vm/interpreterRT_x86_64.cpp @ 453:c96030fff130
6684579: SoftReference processing can be made more efficient
Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not.
Reviewed-by: jmasa
author | ysr |
---|---|
date | Thu, 20 Nov 2008 16:56:09 -0800 |
parents | 9ee9cf798b59 |
children | c3a720eefe82 |
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/* * Copyright 2003-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ #include "incls/_precompiled.incl" #include "incls/_interpreterRT_x86_64.cpp.incl" #define __ _masm-> // Implementation of SignatureHandlerGenerator Register InterpreterRuntime::SignatureHandlerGenerator::from() { return r14; } Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; } Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rscratch1; } void InterpreterRuntime::SignatureHandlerGenerator::pass_int() { const Address src(from(), Interpreter::local_offset_in_bytes(offset())); #ifdef _WIN64 switch (_num_args) { case 0: __ movl(c_rarg1, src); _num_args++; break; case 1: __ movl(c_rarg2, src); _num_args++; break; case 2: __ movl(c_rarg3, src); _num_args++; break; default: __ movl(rax, src); __ movl(Address(to(), _stack_offset), rax); _stack_offset += wordSize; break; } #else switch (_num_int_args) { case 0: __ movl(c_rarg1, src); _num_int_args++; break; case 1: __ movl(c_rarg2, src); _num_int_args++; break; case 2: __ movl(c_rarg3, src); _num_int_args++; break; case 3: __ movl(c_rarg4, src); _num_int_args++; break; case 4: __ movl(c_rarg5, src); _num_int_args++; break; default: __ movl(rax, src); __ movl(Address(to(), _stack_offset), rax); _stack_offset += wordSize; break; } #endif } void InterpreterRuntime::SignatureHandlerGenerator::pass_long() { const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1)); #ifdef _WIN64 switch (_num_args) { case 0: __ movptr(c_rarg1, src); _num_args++; break; case 1: __ movptr(c_rarg2, src); _num_args++; break; case 2: __ movptr(c_rarg3, src); _num_args++; break; case 3: default: __ movptr(rax, src); __ movptr(Address(to(), _stack_offset), rax); _stack_offset += wordSize; break; } #else switch (_num_int_args) { case 0: __ movptr(c_rarg1, src); _num_int_args++; break; case 1: __ movptr(c_rarg2, src); _num_int_args++; break; case 2: __ movptr(c_rarg3, src); _num_int_args++; break; case 3: __ movptr(c_rarg4, src); _num_int_args++; break; case 4: __ movptr(c_rarg5, src); _num_int_args++; break; default: __ movptr(rax, src); __ movptr(Address(to(), _stack_offset), rax); _stack_offset += wordSize; break; } #endif } void InterpreterRuntime::SignatureHandlerGenerator::pass_float() { const Address src(from(), Interpreter::local_offset_in_bytes(offset())); #ifdef _WIN64 if (_num_args < Argument::n_float_register_parameters_c-1) { __ movflt(as_XMMRegister(++_num_args), src); } else { __ movl(rax, src); __ movl(Address(to(), _stack_offset), rax); _stack_offset += wordSize; } #else if (_num_fp_args < Argument::n_float_register_parameters_c) { __ movflt(as_XMMRegister(_num_fp_args++), src); } else { __ movl(rax, src); __ movl(Address(to(), _stack_offset), rax); _stack_offset += wordSize; } #endif } void InterpreterRuntime::SignatureHandlerGenerator::pass_double() { const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1)); #ifdef _WIN64 if (_num_args < Argument::n_float_register_parameters_c-1) { __ movdbl(as_XMMRegister(++_num_args), src); } else { __ movptr(rax, src); __ movptr(Address(to(), _stack_offset), rax); _stack_offset += wordSize; } #else if (_num_fp_args < Argument::n_float_register_parameters_c) { __ movdbl(as_XMMRegister(_num_fp_args++), src); } else { __ movptr(rax, src); __ movptr(Address(to(), _stack_offset), rax); _stack_offset += wordSize; } #endif } void InterpreterRuntime::SignatureHandlerGenerator::pass_object() { const Address src(from(), Interpreter::local_offset_in_bytes(offset())); #ifdef _WIN64 switch (_num_args) { case 0: assert(offset() == 0, "argument register 1 can only be (non-null) receiver"); __ lea(c_rarg1, src); _num_args++; break; case 1: __ lea(rax, src); __ xorl(c_rarg2, c_rarg2); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, c_rarg2, rax); _num_args++; break; case 2: __ lea(rax, src); __ xorl(c_rarg3, c_rarg3); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, c_rarg3, rax); _num_args++; break; default: __ lea(rax, src); __ xorl(temp(), temp()); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, temp(), rax); __ movptr(Address(to(), _stack_offset), temp()); _stack_offset += wordSize; break; } #else switch (_num_int_args) { case 0: assert(offset() == 0, "argument register 1 can only be (non-null) receiver"); __ lea(c_rarg1, src); _num_int_args++; break; case 1: __ lea(rax, src); __ xorl(c_rarg2, c_rarg2); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, c_rarg2, rax); _num_int_args++; break; case 2: __ lea(rax, src); __ xorl(c_rarg3, c_rarg3); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, c_rarg3, rax); _num_int_args++; break; case 3: __ lea(rax, src); __ xorl(c_rarg4, c_rarg4); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, c_rarg4, rax); _num_int_args++; break; case 4: __ lea(rax, src); __ xorl(c_rarg5, c_rarg5); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, c_rarg5, rax); _num_int_args++; break; default: __ lea(rax, src); __ xorl(temp(), temp()); __ cmpptr(src, 0); __ cmov(Assembler::notEqual, temp(), rax); __ movptr(Address(to(), _stack_offset), temp()); _stack_offset += wordSize; break; } #endif } void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) { // generate code to handle arguments iterate(fingerprint); // return result handler __ lea(rax, ExternalAddress(Interpreter::result_handler(method()->result_type()))); __ ret(0); __ flush(); } // Implementation of SignatureHandlerLibrary void SignatureHandlerLibrary::pd_set_handler(address handler) {} #ifdef _WIN64 class SlowSignatureHandler : public NativeSignatureIterator { private: address _from; intptr_t* _to; intptr_t* _reg_args; intptr_t* _fp_identifiers; unsigned int _num_args; #ifdef ASSERT void verify_tag(frame::Tag t) { assert(!TaggedStackInterpreter || *(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag"); } #endif // ASSERT virtual void pass_int() { jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); debug_only(verify_tag(frame::TagValue)); _from -= Interpreter::stackElementSize(); if (_num_args < Argument::n_int_register_parameters_c-1) { *_reg_args++ = from_obj; _num_args++; } else { *_to++ = from_obj; } } virtual void pass_long() { intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); debug_only(verify_tag(frame::TagValue)); _from -= 2*Interpreter::stackElementSize(); if (_num_args < Argument::n_int_register_parameters_c-1) { *_reg_args++ = from_obj; _num_args++; } else { *_to++ = from_obj; } } virtual void pass_object() { intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0)); debug_only(verify_tag(frame::TagReference)); _from -= Interpreter::stackElementSize(); if (_num_args < Argument::n_int_register_parameters_c-1) { *_reg_args++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr; _num_args++; } else { *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr; } } virtual void pass_float() { jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); debug_only(verify_tag(frame::TagValue)); _from -= Interpreter::stackElementSize(); if (_num_args < Argument::n_float_register_parameters_c-1) { *_reg_args++ = from_obj; *_fp_identifiers |= (0x01 << (_num_args*2)); // mark as float _num_args++; } else { *_to++ = from_obj; } } virtual void pass_double() { intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); debug_only(verify_tag(frame::TagValue)); _from -= 2*Interpreter::stackElementSize(); if (_num_args < Argument::n_float_register_parameters_c-1) { *_reg_args++ = from_obj; *_fp_identifiers |= (0x3 << (_num_args*2)); // mark as double _num_args++; } else { *_to++ = from_obj; } } public: SlowSignatureHandler(methodHandle method, address from, intptr_t* to) : NativeSignatureIterator(method) { _from = from; _to = to; _reg_args = to - (method->is_static() ? 4 : 5); _fp_identifiers = to - 2; _to = _to + 4; // Windows reserves stack space for register arguments *(int*) _fp_identifiers = 0; _num_args = (method->is_static() ? 1 : 0); } }; #else class SlowSignatureHandler : public NativeSignatureIterator { private: address _from; intptr_t* _to; intptr_t* _int_args; intptr_t* _fp_args; intptr_t* _fp_identifiers; unsigned int _num_int_args; unsigned int _num_fp_args; #ifdef ASSERT void verify_tag(frame::Tag t) { assert(!TaggedStackInterpreter || *(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag"); } #endif // ASSERT virtual void pass_int() { jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0)); debug_only(verify_tag(frame::TagValue)); _from -= Interpreter::stackElementSize(); if (_num_int_args < Argument::n_int_register_parameters_c-1) { *_int_args++ = from_obj; _num_int_args++; } else { *_to++ = from_obj; } } virtual void pass_long() { intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); debug_only(verify_tag(frame::TagValue)); _from -= 2*Interpreter::stackElementSize(); if (_num_int_args < Argument::n_int_register_parameters_c-1) { *_int_args++ = from_obj; _num_int_args++; } else { *_to++ = from_obj; } } virtual void pass_object() { intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0)); debug_only(verify_tag(frame::TagReference)); _from -= Interpreter::stackElementSize(); if (_num_int_args < Argument::n_int_register_parameters_c-1) { *_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr; _num_int_args++; } else { *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr; } } virtual void pass_float() { jint from_obj = *(jint*)(_from+Interpreter::local_offset_in_bytes(0)); debug_only(verify_tag(frame::TagValue)); _from -= Interpreter::stackElementSize(); if (_num_fp_args < Argument::n_float_register_parameters_c) { *_fp_args++ = from_obj; _num_fp_args++; } else { *_to++ = from_obj; } } virtual void pass_double() { intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1)); _from -= 2*Interpreter::stackElementSize(); if (_num_fp_args < Argument::n_float_register_parameters_c) { *_fp_args++ = from_obj; *_fp_identifiers |= (1 << _num_fp_args); // mark as double _num_fp_args++; } else { *_to++ = from_obj; } } public: SlowSignatureHandler(methodHandle method, address from, intptr_t* to) : NativeSignatureIterator(method) { _from = from; _to = to; _int_args = to - (method->is_static() ? 14 : 15); _fp_args = to - 9; _fp_identifiers = to - 10; *(int*) _fp_identifiers = 0; _num_int_args = (method->is_static() ? 1 : 0); _num_fp_args = 0; } }; #endif IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, methodOopDesc* method, intptr_t* from, intptr_t* to)) methodHandle m(thread, (methodOop)method); assert(m->is_native(), "sanity check"); // handle arguments SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1)); // return result handler return Interpreter::result_handler(m->result_type()); IRT_END