1 /*
2 * Copyright (c) 1997, 2004, 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 */
24
25 // This code has been converted from the 1.1E java virtual machine
26 // Thanks to the JavaTopics group for using the code
27
28 class ChangeItem;
29
30 // Callback object for code relocations
31 class RelocatorListener : public StackObj {
32 public:
33 RelocatorListener() {};
34 virtual void relocated(int bci, int delta, int new_method_size) = 0;
35 };
36
37
38 class Relocator : public ResourceObj {
39 public:
40 Relocator(methodHandle method, RelocatorListener* listener);
41 methodHandle insert_space_at(int bci, int space, u_char inst_buffer[], TRAPS);
42
43 // Callbacks from ChangeItem's
44 bool handle_code_changes();
100
101 // basic relocation methods
102 bool relocate_code (int bci, int ilen, int delta);
103 void change_jumps (int break_bci, int delta);
104 void change_jump (int bci, int offset, bool is_short, int break_bci, int delta);
105 void adjust_exception_table(int bci, int delta);
106 void adjust_line_no_table (int bci, int delta);
107 void adjust_local_var_table(int bci, int delta);
108 void adjust_stack_map_table(int bci, int delta);
109 int get_orig_switch_pad (int bci, bool is_lookup_switch);
110 int rc_instr_len (int bci);
111 bool expand_code_array (int delta);
112
113 // Callback support
114 RelocatorListener *_listener;
115 void notify(int bci, int delta, int new_code_length) {
116 if (_listener != NULL)
117 _listener->relocated(bci, delta, new_code_length);
118 }
119 };
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1 /*
2 * Copyright (c) 1997, 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 */
24
25 #ifndef SHARE_VM_RUNTIME_RELOCATOR_HPP
26 #define SHARE_VM_RUNTIME_RELOCATOR_HPP
27
28 #include "interpreter/bytecodes.hpp"
29 #include "oops/methodOop.hpp"
30 #ifdef TARGET_ARCH_x86
31 # include "bytes_x86.hpp"
32 #endif
33 #ifdef TARGET_ARCH_sparc
34 # include "bytes_sparc.hpp"
35 #endif
36 #ifdef TARGET_ARCH_zero
37 # include "bytes_zero.hpp"
38 #endif
39
40 // This code has been converted from the 1.1E java virtual machine
41 // Thanks to the JavaTopics group for using the code
42
43 class ChangeItem;
44
45 // Callback object for code relocations
46 class RelocatorListener : public StackObj {
47 public:
48 RelocatorListener() {};
49 virtual void relocated(int bci, int delta, int new_method_size) = 0;
50 };
51
52
53 class Relocator : public ResourceObj {
54 public:
55 Relocator(methodHandle method, RelocatorListener* listener);
56 methodHandle insert_space_at(int bci, int space, u_char inst_buffer[], TRAPS);
57
58 // Callbacks from ChangeItem's
59 bool handle_code_changes();
115
116 // basic relocation methods
117 bool relocate_code (int bci, int ilen, int delta);
118 void change_jumps (int break_bci, int delta);
119 void change_jump (int bci, int offset, bool is_short, int break_bci, int delta);
120 void adjust_exception_table(int bci, int delta);
121 void adjust_line_no_table (int bci, int delta);
122 void adjust_local_var_table(int bci, int delta);
123 void adjust_stack_map_table(int bci, int delta);
124 int get_orig_switch_pad (int bci, bool is_lookup_switch);
125 int rc_instr_len (int bci);
126 bool expand_code_array (int delta);
127
128 // Callback support
129 RelocatorListener *_listener;
130 void notify(int bci, int delta, int new_code_length) {
131 if (_listener != NULL)
132 _listener->relocated(bci, delta, new_code_length);
133 }
134 };
135
136 #endif // SHARE_VM_RUNTIME_RELOCATOR_HPP
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