Thu, 03 Jan 2013 16:30:47 -0800
8005544: Use 256bit YMM registers in arraycopy stubs on x86
Summary: Use YMM registers in arraycopy and array_fill stubs.
Reviewed-by: roland, twisti
1 /*
2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "interpreter/interpreter.hpp"
27 #include "interpreter/interpreterRuntime.hpp"
28 #include "memory/allocation.inline.hpp"
29 #include "memory/universe.inline.hpp"
30 #include "oops/method.hpp"
31 #include "oops/oop.inline.hpp"
32 #include "runtime/handles.inline.hpp"
33 #include "runtime/icache.hpp"
34 #include "runtime/interfaceSupport.hpp"
35 #include "runtime/signature.hpp"
38 #define __ _masm->
41 // Implementation of SignatureHandlerGenerator
42 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
43 move(offset(), jni_offset() + 1);
44 }
46 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
47 move(offset(), jni_offset() + 1);
48 }
50 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
51 move(offset(), jni_offset() + 2);
52 move(offset() + 1, jni_offset() + 1);
53 }
55 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
56 box (offset(), jni_offset() + 1);
57 }
59 void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {
60 __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
61 __ movl(Address(to(), to_offset * wordSize), temp());
62 }
65 void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {
66 __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
67 __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI
68 Label L;
69 __ jcc(Assembler::notZero, L);
70 __ movptr(temp(), NULL_WORD);
71 __ bind(L);
72 __ movptr(Address(to(), to_offset * wordSize), temp());
73 }
76 void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {
77 // generate code to handle arguments
78 iterate(fingerprint);
79 // return result handler
80 __ lea(rax,
81 ExternalAddress((address)Interpreter::result_handler(method()->result_type())));
82 // return
83 __ ret(0);
84 __ flush();
85 }
88 Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; }
89 Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; }
90 Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; }
93 // Implementation of SignatureHandlerLibrary
95 void SignatureHandlerLibrary::pd_set_handler(address handler) {}
97 class SlowSignatureHandler: public NativeSignatureIterator {
98 private:
99 address _from;
100 intptr_t* _to;
102 virtual void pass_int() {
103 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
104 _from -= Interpreter::stackElementSize;
105 }
107 virtual void pass_float() {
108 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
109 _from -= Interpreter::stackElementSize;
110 }
112 virtual void pass_long() {
113 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
114 _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
115 _to += 2;
116 _from -= 2*Interpreter::stackElementSize;
117 }
119 virtual void pass_object() {
120 // pass address of from
121 intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
122 *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr;
123 _from -= Interpreter::stackElementSize;
124 }
126 public:
127 SlowSignatureHandler(methodHandle method, address from, intptr_t* to) :
128 NativeSignatureIterator(method) {
129 _from = from;
130 _to = to + (is_static() ? 2 : 1);
131 }
132 };
134 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, Method* method, intptr_t* from, intptr_t* to))
135 methodHandle m(thread, (Method*)method);
136 assert(m->is_native(), "sanity check");
137 // handle arguments
138 SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));
139 // return result handler
140 return Interpreter::result_handler(m->result_type());
141 IRT_END