1 /*
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3  * Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This code is free software; you can redistribute it and/or modify it
7  * under the terms of the GNU General Public License version 2 only, as
8  * published by the Free Software Foundation.
9  *
10  * This code is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24  */
25 
26 #include "precompiled.hpp"
27 #include "asm/assembler.hpp"
28 #include "interpreter/interpreter.hpp"
29 #include "interpreter/interpreterRuntime.hpp"
30 #include "interpreter/zero/bytecodeInterpreter.hpp"
31 #include "interpreter/zero/zeroInterpreter.hpp"
32 #include "oops/method.hpp"
33 #include "zeroInterpreterGenerator.hpp"
34 
ZeroInterpreterGenerator(StubQueue * _code)35 ZeroInterpreterGenerator::ZeroInterpreterGenerator(StubQueue* _code): AbstractInterpreterGenerator(_code) {
36   generate_all();
37 }
38 
generate_all()39 void ZeroInterpreterGenerator::generate_all() {
40   { CodeletMark cm(_masm, "slow signature handler");
41     AbstractInterpreter::_slow_signature_handler = generate_slow_signature_handler();
42   }
43 
44 #define method_entry(kind) Interpreter::_entry_table[Interpreter::kind] = generate_method_entry(Interpreter::kind)
45 
46   { CodeletMark cm(_masm, "(kind = frame_manager)");
47     // all non-native method kinds
48     method_entry(zerolocals);
49     method_entry(zerolocals_synchronized);
50     method_entry(empty);
51     method_entry(getter);
52     method_entry(setter);
53     method_entry(abstract);
54     method_entry(java_lang_math_sin   );
55     method_entry(java_lang_math_cos   );
56     method_entry(java_lang_math_tan   );
57     method_entry(java_lang_math_abs   );
58     method_entry(java_lang_math_sqrt  );
59     method_entry(java_lang_math_log   );
60     method_entry(java_lang_math_log10 );
61     method_entry(java_lang_math_pow );
62     method_entry(java_lang_math_exp );
63     method_entry(java_lang_math_fmaD );
64     method_entry(java_lang_math_fmaF );
65     method_entry(java_lang_ref_reference_get);
66 
67     AbstractInterpreter::initialize_method_handle_entries();
68 
69     Interpreter::_native_entry_begin = Interpreter::code()->code_end();
70     method_entry(native);
71     method_entry(native_synchronized);
72     Interpreter::_native_entry_end = Interpreter::code()->code_end();
73   }
74 
75 #undef method_entry
76 }
77 
78 // Generate method entries
generate_method_entry(AbstractInterpreter::MethodKind kind)79 address ZeroInterpreterGenerator::generate_method_entry(
80                                         AbstractInterpreter::MethodKind kind) {
81   // determine code generation flags
82   bool native = false;
83   bool synchronized = false;
84   address entry_point = NULL;
85 
86   switch (kind) {
87   case Interpreter::zerolocals             :                                          break;
88   case Interpreter::zerolocals_synchronized:                synchronized = true;      break;
89   case Interpreter::native                 : native = true;                           break;
90   case Interpreter::native_synchronized    : native = true; synchronized = true;      break;
91   case Interpreter::empty                  : entry_point = generate_empty_entry();    break;
92   case Interpreter::getter                 : entry_point = generate_getter_entry();   break;
93   case Interpreter::setter                 : entry_point = generate_setter_entry();   break;
94   case Interpreter::abstract               : entry_point = generate_abstract_entry(); break;
95 
96   case Interpreter::java_lang_math_sin     : // fall thru
97   case Interpreter::java_lang_math_cos     : // fall thru
98   case Interpreter::java_lang_math_tan     : // fall thru
99   case Interpreter::java_lang_math_abs     : // fall thru
100   case Interpreter::java_lang_math_log     : // fall thru
101   case Interpreter::java_lang_math_log10   : // fall thru
102   case Interpreter::java_lang_math_sqrt    : // fall thru
103   case Interpreter::java_lang_math_pow     : // fall thru
104   case Interpreter::java_lang_math_exp     : // fall thru
105   case Interpreter::java_lang_math_fmaD    : // fall thru
106   case Interpreter::java_lang_math_fmaF    : entry_point = generate_math_entry(kind);      break;
107   case Interpreter::java_lang_ref_reference_get
108                                            : entry_point = generate_Reference_get_entry(); break;
109   default:
110     fatal("unexpected method kind: %d", kind);
111     break;
112   }
113 
114   if (entry_point) {
115     return entry_point;
116   }
117 
118   // We expect the normal and native entry points to be generated first so we can reuse them.
119   if (native) {
120     entry_point = Interpreter::entry_for_kind(synchronized ? Interpreter::native_synchronized : Interpreter::native);
121     if (entry_point == NULL) {
122       entry_point = generate_native_entry(synchronized);
123     }
124   } else {
125     entry_point = Interpreter::entry_for_kind(synchronized ? Interpreter::zerolocals_synchronized : Interpreter::zerolocals);
126     if (entry_point == NULL) {
127       entry_point = generate_normal_entry(synchronized);
128     }
129   }
130 
131   return entry_point;
132 }
133 
generate_slow_signature_handler()134 address ZeroInterpreterGenerator::generate_slow_signature_handler() {
135   _masm->advance(1);
136   return (address) InterpreterRuntime::slow_signature_handler;
137 }
138 
generate_math_entry(AbstractInterpreter::MethodKind kind)139 address ZeroInterpreterGenerator::generate_math_entry(
140     AbstractInterpreter::MethodKind kind) {
141   if (!InlineIntrinsics)
142     return NULL;
143 
144   Unimplemented();
145   return NULL;
146 }
147 
generate_abstract_entry()148 address ZeroInterpreterGenerator::generate_abstract_entry() {
149   return generate_entry((address) ShouldNotCallThisEntry());
150 }
151 
generate_empty_entry()152 address ZeroInterpreterGenerator::generate_empty_entry() {
153   if (!UseFastEmptyMethods)
154     return NULL;
155 
156   return generate_entry((address) ZeroInterpreter::empty_entry);
157 }
158 
generate_getter_entry()159 address ZeroInterpreterGenerator::generate_getter_entry() {
160   if (!UseFastAccessorMethods)
161     return NULL;
162 
163   return generate_entry((address) ZeroInterpreter::getter_entry);
164 }
165 
generate_setter_entry()166 address ZeroInterpreterGenerator::generate_setter_entry() {
167   if (!UseFastAccessorMethods)
168     return NULL;
169 
170   return generate_entry((address) ZeroInterpreter::setter_entry);
171 }
172 
generate_Reference_get_entry(void)173 address ZeroInterpreterGenerator::generate_Reference_get_entry(void) {
174   return generate_entry((address) ZeroInterpreter::Reference_get_entry);
175 }
176 
generate_native_entry(bool synchronized)177 address ZeroInterpreterGenerator::generate_native_entry(bool synchronized) {
178   return generate_entry((address) ZeroInterpreter::native_entry);
179 }
180 
generate_normal_entry(bool synchronized)181 address ZeroInterpreterGenerator::generate_normal_entry(bool synchronized) {
182   return generate_entry((address) ZeroInterpreter::normal_entry);
183 }
184