|
0
|
1 /*
|
|
|
2 * Copyright 1997-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
|
21 * have any questions.
|
|
|
22 *
|
|
|
23 */
|
|
|
24
|
|
|
25 // A JavaCallWrapper is constructed before each JavaCall and destructed after the call.
|
|
|
26 // Its purpose is to allocate/deallocate a new handle block and to save/restore the last
|
|
|
27 // Java fp/sp. A pointer to the JavaCallWrapper is stored on the stack.
|
|
|
28
|
|
|
29 class JavaCallWrapper: StackObj {
|
|
|
30 friend class VMStructs;
|
|
|
31 private:
|
|
|
32 JavaThread* _thread; // the thread to which this call belongs
|
|
|
33 JNIHandleBlock* _handles; // the saved handle block
|
|
|
34 methodOop _callee_method; // to be able to collect arguments if entry frame is top frame
|
|
|
35 oop _receiver; // the receiver of the call (if a non-static call)
|
|
|
36
|
|
|
37 JavaFrameAnchor _anchor; // last thread anchor state that we must restore
|
|
|
38
|
|
|
39 JavaValue* _result; // result value
|
|
|
40
|
|
|
41 public:
|
|
|
42 // Construction/destruction
|
|
|
43 JavaCallWrapper(methodHandle callee_method, Handle receiver, JavaValue* result, TRAPS);
|
|
|
44 ~JavaCallWrapper();
|
|
|
45
|
|
|
46 // Accessors
|
|
|
47 JavaThread* thread() const { return _thread; }
|
|
|
48 JNIHandleBlock* handles() const { return _handles; }
|
|
|
49
|
|
|
50 JavaFrameAnchor* anchor(void) { return &_anchor; }
|
|
|
51
|
|
|
52 JavaValue* result() const { return _result; }
|
|
|
53 // GC support
|
|
|
54 methodOop callee_method() { return _callee_method; }
|
|
|
55 oop receiver() { return _receiver; }
|
|
|
56 void oops_do(OopClosure* f);
|
|
|
57
|
|
|
58 };
|
|
|
59
|
|
|
60
|
|
|
61 // Encapsulates arguments to a JavaCall (faster, safer, and more convenient than using var-args)
|
|
|
62 class JavaCallArguments : public StackObj {
|
|
|
63 private:
|
|
|
64 enum Constants {
|
|
|
65 _default_size = 8 // Must be at least # of arguments in JavaCalls methods
|
|
|
66 };
|
|
|
67
|
|
|
68 intptr_t _value_buffer [_default_size + 1];
|
|
|
69 intptr_t _parameter_buffer [_default_size*2 + 1];
|
|
|
70 bool _is_oop_buffer[_default_size + 1];
|
|
|
71
|
|
|
72 intptr_t* _value;
|
|
|
73 intptr_t* _parameters;
|
|
|
74 bool* _is_oop;
|
|
|
75 int _size;
|
|
|
76 int _max_size;
|
|
|
77 bool _start_at_zero; // Support late setting of receiver
|
|
|
78
|
|
|
79 void initialize() {
|
|
|
80 // Starts at first element to support set_receiver.
|
|
|
81 _value = &_value_buffer[1];
|
|
|
82 _is_oop = &_is_oop_buffer[1];
|
|
|
83
|
|
|
84 _parameters = &_parameter_buffer[0];
|
|
|
85 _max_size = _default_size;
|
|
|
86 _size = 0;
|
|
|
87 _start_at_zero = false;
|
|
|
88 }
|
|
|
89
|
|
|
90 public:
|
|
|
91 JavaCallArguments() { initialize(); }
|
|
|
92
|
|
|
93 JavaCallArguments(Handle receiver) {
|
|
|
94 initialize();
|
|
|
95 push_oop(receiver);
|
|
|
96 }
|
|
|
97
|
|
|
98 JavaCallArguments(int max_size) {
|
|
|
99 if (max_size > _default_size) {
|
|
|
100 _value = NEW_RESOURCE_ARRAY(intptr_t, max_size + 1);
|
|
|
101 _is_oop = NEW_RESOURCE_ARRAY(bool, max_size + 1);
|
|
|
102 if (TaggedStackInterpreter) {
|
|
|
103 _parameters = NEW_RESOURCE_ARRAY(intptr_t, max_size*2 + 1);
|
|
|
104 }
|
|
|
105 // Reserve room for potential receiver in value and is_oop
|
|
|
106 _value++; _is_oop++;
|
|
|
107 _max_size = max_size;
|
|
|
108 _size = 0;
|
|
|
109 _start_at_zero = false;
|
|
|
110 } else {
|
|
|
111 initialize();
|
|
|
112 }
|
|
|
113 }
|
|
|
114
|
|
|
115 inline void push_oop(Handle h) { _is_oop[_size] = true;
|
|
|
116 JNITypes::put_obj((oop)h.raw_value(), _value, _size); }
|
|
|
117
|
|
|
118 inline void push_int(int i) { _is_oop[_size] = false;
|
|
|
119 JNITypes::put_int(i, _value, _size); }
|
|
|
120
|
|
|
121 inline void push_double(double d) { _is_oop[_size] = false; _is_oop[_size + 1] = false;
|
|
|
122 JNITypes::put_double(d, _value, _size); }
|
|
|
123
|
|
|
124 inline void push_long(jlong l) { _is_oop[_size] = false; _is_oop[_size + 1] = false;
|
|
|
125 JNITypes::put_long(l, _value, _size); }
|
|
|
126
|
|
|
127 inline void push_float(float f) { _is_oop[_size] = false;
|
|
|
128 JNITypes::put_float(f, _value, _size); }
|
|
|
129
|
|
|
130 // receiver
|
|
|
131 Handle receiver() {
|
|
|
132 assert(_size > 0, "must at least be one argument");
|
|
|
133 assert(_is_oop[0], "first argument must be an oop");
|
|
|
134 assert(_value[0] != 0, "receiver must be not-null");
|
|
|
135 return Handle((oop*)_value[0], false);
|
|
|
136 }
|
|
|
137
|
|
|
138 void set_receiver(Handle h) {
|
|
|
139 assert(_start_at_zero == false, "can only be called once");
|
|
|
140 _start_at_zero = true;
|
|
|
141 _is_oop--;
|
|
|
142 _value--;
|
|
|
143 _size++;
|
|
|
144 _is_oop[0] = true;
|
|
|
145 _value[0] = (intptr_t)h.raw_value();
|
|
|
146 }
|
|
|
147
|
|
|
148 // Converts all Handles to oops, and returns a reference to parameter vector
|
|
|
149 intptr_t* parameters() ;
|
|
|
150 int size_of_parameters() const { return _size; }
|
|
|
151
|
|
|
152 // Verify that pushed arguments fits a given method
|
|
|
153 void verify(methodHandle method, BasicType return_type, Thread *thread) PRODUCT_RETURN;
|
|
|
154 };
|
|
|
155
|
|
|
156 // All calls to Java have to go via JavaCalls. Sets up the stack frame
|
|
|
157 // and makes sure that the last_Java_frame pointers are chained correctly.
|
|
|
158 //
|
|
|
159
|
|
|
160 class JavaCalls: AllStatic {
|
|
|
161 static void call_helper(JavaValue* result, methodHandle* method, JavaCallArguments* args, TRAPS);
|
|
|
162 public:
|
|
|
163 // Optimized Constuctor call
|
|
|
164 static void call_default_constructor(JavaThread* thread, methodHandle method, Handle receiver, TRAPS);
|
|
|
165
|
|
|
166 // call_special
|
|
|
167 // ------------
|
|
|
168 // The receiver must be first oop in argument list
|
|
|
169 static void call_special(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS);
|
|
|
170
|
|
|
171 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS); // No args
|
|
|
172 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS);
|
|
|
173 static void call_special(JavaValue* result, Handle receiver, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS);
|
|
|
174
|
|
|
175 // virtual call
|
|
|
176 // ------------
|
|
|
177
|
|
|
178 // The receiver must be first oop in argument list
|
|
|
179 static void call_virtual(JavaValue* result, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS);
|
|
|
180
|
|
|
181 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, TRAPS); // No args
|
|
|
182 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS);
|
|
|
183 static void call_virtual(JavaValue* result, Handle receiver, KlassHandle spec_klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS);
|
|
|
184
|
|
|
185 // Static call
|
|
|
186 // -----------
|
|
|
187 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, JavaCallArguments* args, TRAPS);
|
|
|
188
|
|
|
189 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, TRAPS);
|
|
|
190 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, TRAPS);
|
|
|
191 static void call_static(JavaValue* result, KlassHandle klass, symbolHandle name, symbolHandle signature, Handle arg1, Handle arg2, TRAPS);
|
|
|
192
|
|
|
193 // Low-level interface
|
|
|
194 static void call(JavaValue* result, methodHandle method, JavaCallArguments* args, TRAPS);
|
|
|
195 };
|
