Wed, 02 Jun 2010 22:45:42 -0700
Merge
1 /*
2 * Copyright (c) 1998, 2010, 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 "incls/_precompiled.incl"
26 #include "incls/_interpreterRT_x86_32.cpp.incl"
29 #define __ _masm->
32 // Implementation of SignatureHandlerGenerator
33 void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
34 move(offset(), jni_offset() + 1);
35 }
37 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
38 move(offset(), jni_offset() + 2);
39 move(offset() + 1, jni_offset() + 1);
40 }
42 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
43 box (offset(), jni_offset() + 1);
44 }
46 void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {
47 __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
48 __ movl(Address(to(), to_offset * wordSize), temp());
49 }
52 void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {
53 __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
54 __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI
55 Label L;
56 __ jcc(Assembler::notZero, L);
57 __ movptr(temp(), NULL_WORD);
58 __ bind(L);
59 __ movptr(Address(to(), to_offset * wordSize), temp());
60 }
63 void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {
64 // generate code to handle arguments
65 iterate(fingerprint);
66 // return result handler
67 __ lea(rax,
68 ExternalAddress((address)Interpreter::result_handler(method()->result_type())));
69 // return
70 __ ret(0);
71 __ flush();
72 }
75 Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; }
76 Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; }
77 Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; }
80 // Implementation of SignatureHandlerLibrary
82 void SignatureHandlerLibrary::pd_set_handler(address handler) {}
84 class SlowSignatureHandler: public NativeSignatureIterator {
85 private:
86 address _from;
87 intptr_t* _to;
89 virtual void pass_int() {
90 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
91 _from -= Interpreter::stackElementSize;
92 }
94 virtual void pass_long() {
95 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
96 _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
97 _to += 2;
98 _from -= 2*Interpreter::stackElementSize;
99 }
101 virtual void pass_object() {
102 // pass address of from
103 intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
104 *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr;
105 _from -= Interpreter::stackElementSize;
106 }
108 public:
109 SlowSignatureHandler(methodHandle method, address from, intptr_t* to) :
110 NativeSignatureIterator(method) {
111 _from = from;
112 _to = to + (is_static() ? 2 : 1);
113 }
114 };
116 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, methodOopDesc* method, intptr_t* from, intptr_t* to))
117 methodHandle m(thread, (methodOop)method);
118 assert(m->is_native(), "sanity check");
119 // handle arguments
120 SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));
121 // return result handler
122 return Interpreter::result_handler(m->result_type());
123 IRT_END