Mercurial > hg > graal-compiler
annotate src/share/vm/interpreter/bytecode.hpp @ 948:89e0543e1737
6884624: Update copyright year
Summary: Update copyright for files that have been modified in 2009 through Septermber
Reviewed-by: tbell, ohair
author | xdono |
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date | Tue, 22 Sep 2009 14:06:10 -0700 |
parents | bd02caa94611 |
children | e66fd840cb6b |
rev | line source |
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0 | 1 /* |
844 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
0 | 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 // Base class for different kinds of abstractions working | |
26 // relative to an objects 'this' pointer. | |
27 | |
28 class ThisRelativeObj VALUE_OBJ_CLASS_SPEC { | |
29 private: | |
30 int sign_extend (int x, int size) const { const int s = (BytesPerInt - size)*BitsPerByte; return (x << s) >> s; } | |
31 | |
32 public: | |
33 // Address computation | |
34 address addr_at (int offset) const { return (address)this + offset; } | |
35 address aligned_addr_at (int offset) const { return (address)round_to((intptr_t)addr_at(offset), jintSize); } | |
36 int aligned_offset (int offset) const { return aligned_addr_at(offset) - addr_at(0); } | |
37 | |
38 // Java unsigned accessors (using Java spec byte ordering) | |
39 int java_byte_at (int offset) const { return *(jubyte*)addr_at(offset); } | |
40 int java_hwrd_at (int offset) const { return java_byte_at(offset) << (1 * BitsPerByte) | java_byte_at(offset + 1); } | |
41 int java_word_at (int offset) const { return java_hwrd_at(offset) << (2 * BitsPerByte) | java_hwrd_at(offset + 2); } | |
42 | |
43 // Java signed accessors (using Java spec byte ordering) | |
44 int java_signed_byte_at(int offset) const { return sign_extend(java_byte_at(offset), 1); } | |
45 int java_signed_hwrd_at(int offset) const { return sign_extend(java_hwrd_at(offset), 2); } | |
46 int java_signed_word_at(int offset) const { return java_word_at(offset) ; } | |
47 | |
48 // Fast accessors (using the machine's natural byte ordering) | |
49 int fast_byte_at (int offset) const { return *(jubyte *)addr_at(offset); } | |
50 int fast_hwrd_at (int offset) const { return *(jushort*)addr_at(offset); } | |
51 int fast_word_at (int offset) const { return *(juint *)addr_at(offset); } | |
52 | |
53 // Fast signed accessors (using the machine's natural byte ordering) | |
54 int fast_signed_byte_at(int offset) const { return *(jbyte *)addr_at(offset); } | |
55 int fast_signed_hwrd_at(int offset) const { return *(jshort*)addr_at(offset); } | |
56 int fast_signed_word_at(int offset) const { return *(jint *)addr_at(offset); } | |
57 | |
58 // Fast manipulators (using the machine's natural byte ordering) | |
59 void set_fast_byte_at (int offset, int x) const { *(jbyte *)addr_at(offset) = (jbyte )x; } | |
60 void set_fast_hwrd_at (int offset, int x) const { *(jshort*)addr_at(offset) = (jshort)x; } | |
61 void set_fast_word_at (int offset, int x) const { *(jint *)addr_at(offset) = (jint )x; } | |
62 }; | |
63 | |
64 | |
65 // The base class for different kinds of bytecode abstractions. | |
66 // Provides the primitive operations to manipulate code relative | |
67 // to an objects 'this' pointer. | |
68 | |
69 class Bytecode: public ThisRelativeObj { | |
70 protected: | |
71 u_char byte_at(int offset) const { return *addr_at(offset); } | |
72 bool check_must_rewrite() const; | |
73 | |
74 public: | |
75 // Attributes | |
76 address bcp() const { return addr_at(0); } | |
77 address next_bcp() const { return addr_at(0) + Bytecodes::length_at(bcp()); } | |
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78 int instruction_size() const { return Bytecodes::length_at(bcp()); } |
0 | 79 |
80 Bytecodes::Code code() const { return Bytecodes::code_at(addr_at(0)); } | |
81 Bytecodes::Code java_code() const { return Bytecodes::java_code(code()); } | |
82 bool must_rewrite() const { return Bytecodes::can_rewrite(code()) && check_must_rewrite(); } | |
83 bool is_active_breakpoint() const { return Bytecodes::is_active_breakpoint_at(bcp()); } | |
84 | |
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85 int one_byte_index() const { assert_index_size(1); return byte_at(1); } |
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86 int two_byte_index() const { assert_index_size(2); return (byte_at(1) << 8) + byte_at(2); } |
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87 |
0 | 88 int offset() const { return (two_byte_index() << 16) >> 16; } |
89 address destination() const { return bcp() + offset(); } | |
90 | |
91 // Attribute modification | |
92 void set_code(Bytecodes::Code code); | |
93 | |
94 // Creation | |
95 inline friend Bytecode* Bytecode_at(address bcp); | |
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96 |
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97 private: |
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98 void assert_index_size(int required_size) const { |
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99 #ifdef ASSERT |
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100 int isize = instruction_size() - 1; |
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101 if (isize == 2 && code() == Bytecodes::_iinc) |
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102 isize = 1; |
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103 else if (isize <= 2) |
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104 ; // no change |
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105 else if (code() == Bytecodes::_invokedynamic) |
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106 isize = 4; |
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107 else |
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108 isize = 2; |
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109 assert(isize = required_size, "wrong index size"); |
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110 #endif |
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111 } |
0 | 112 }; |
113 | |
114 inline Bytecode* Bytecode_at(address bcp) { | |
115 return (Bytecode*)bcp; | |
116 } | |
117 | |
118 | |
119 // Abstractions for lookupswitch bytecode | |
120 | |
121 class LookupswitchPair: ThisRelativeObj { | |
122 private: | |
123 int _match; | |
124 int _offset; | |
125 | |
126 public: | |
127 int match() const { return java_signed_word_at(0 * jintSize); } | |
128 int offset() const { return java_signed_word_at(1 * jintSize); } | |
129 }; | |
130 | |
131 | |
132 class Bytecode_lookupswitch: public Bytecode { | |
133 public: | |
134 void verify() const PRODUCT_RETURN; | |
135 | |
136 // Attributes | |
137 int default_offset() const { return java_signed_word_at(aligned_offset(1 + 0*jintSize)); } | |
138 int number_of_pairs() const { return java_signed_word_at(aligned_offset(1 + 1*jintSize)); } | |
139 LookupswitchPair* pair_at(int i) const { assert(0 <= i && i < number_of_pairs(), "pair index out of bounds"); | |
140 return (LookupswitchPair*)aligned_addr_at(1 + (1 + i)*2*jintSize); } | |
141 // Creation | |
142 inline friend Bytecode_lookupswitch* Bytecode_lookupswitch_at(address bcp); | |
143 }; | |
144 | |
145 inline Bytecode_lookupswitch* Bytecode_lookupswitch_at(address bcp) { | |
146 Bytecode_lookupswitch* b = (Bytecode_lookupswitch*)bcp; | |
147 debug_only(b->verify()); | |
148 return b; | |
149 } | |
150 | |
151 | |
152 class Bytecode_tableswitch: public Bytecode { | |
153 public: | |
154 void verify() const PRODUCT_RETURN; | |
155 | |
156 // Attributes | |
157 int default_offset() const { return java_signed_word_at(aligned_offset(1 + 0*jintSize)); } | |
158 int low_key() const { return java_signed_word_at(aligned_offset(1 + 1*jintSize)); } | |
159 int high_key() const { return java_signed_word_at(aligned_offset(1 + 2*jintSize)); } | |
160 int dest_offset_at(int i) const; | |
161 int length() { return high_key()-low_key()+1; } | |
162 | |
163 // Creation | |
164 inline friend Bytecode_tableswitch* Bytecode_tableswitch_at(address bcp); | |
165 }; | |
166 | |
167 inline Bytecode_tableswitch* Bytecode_tableswitch_at(address bcp) { | |
168 Bytecode_tableswitch* b = (Bytecode_tableswitch*)bcp; | |
169 debug_only(b->verify()); | |
170 return b; | |
171 } | |
172 | |
173 | |
174 // Abstraction for invoke_{virtual, static, interface, special} | |
175 | |
176 class Bytecode_invoke: public ResourceObj { | |
177 protected: | |
178 methodHandle _method; // method containing the bytecode | |
179 int _bci; // position of the bytecode | |
180 | |
181 Bytecode_invoke(methodHandle method, int bci) : _method(method), _bci(bci) {} | |
182 | |
183 public: | |
184 void verify() const; | |
185 | |
186 // Attributes | |
187 methodHandle method() const { return _method; } | |
188 int bci() const { return _bci; } | |
189 address bcp() const { return _method->bcp_from(bci()); } | |
190 | |
191 int index() const; // the constant pool index for the invoke | |
192 symbolOop name() const; // returns the name of the invoked method | |
193 symbolOop signature() const; // returns the signature of the invoked method | |
194 BasicType result_type(Thread *thread) const; // returns the result type of the invoke | |
195 | |
196 Bytecodes::Code code() const { return Bytecodes::code_at(bcp(), _method()); } | |
197 Bytecodes::Code adjusted_invoke_code() const { return Bytecodes::java_code(code()); } | |
198 | |
199 methodHandle static_target(TRAPS); // "specified" method (from constant pool) | |
200 | |
201 // Testers | |
202 bool is_invokeinterface() const { return adjusted_invoke_code() == Bytecodes::_invokeinterface; } | |
203 bool is_invokevirtual() const { return adjusted_invoke_code() == Bytecodes::_invokevirtual; } | |
204 bool is_invokestatic() const { return adjusted_invoke_code() == Bytecodes::_invokestatic; } | |
205 bool is_invokespecial() const { return adjusted_invoke_code() == Bytecodes::_invokespecial; } | |
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206 bool is_invokedynamic() const { return adjusted_invoke_code() == Bytecodes::_invokedynamic; } |
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207 |
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208 bool has_giant_index() const { return is_invokedynamic(); } |
0 | 209 |
210 bool is_valid() const { return is_invokeinterface() || | |
211 is_invokevirtual() || | |
212 is_invokestatic() || | |
213 is_invokespecial(); } | |
214 | |
215 // Creation | |
216 inline friend Bytecode_invoke* Bytecode_invoke_at(methodHandle method, int bci); | |
217 | |
218 // Like Bytecode_invoke_at. Instead it returns NULL if the bci is not at an invoke. | |
219 inline friend Bytecode_invoke* Bytecode_invoke_at_check(methodHandle method, int bci); | |
220 }; | |
221 | |
222 inline Bytecode_invoke* Bytecode_invoke_at(methodHandle method, int bci) { | |
223 Bytecode_invoke* b = new Bytecode_invoke(method, bci); | |
224 debug_only(b->verify()); | |
225 return b; | |
226 } | |
227 | |
228 inline Bytecode_invoke* Bytecode_invoke_at_check(methodHandle method, int bci) { | |
229 Bytecode_invoke* b = new Bytecode_invoke(method, bci); | |
230 return b->is_valid() ? b : NULL; | |
231 } | |
232 | |
233 | |
234 // Abstraction for all field accesses (put/get field/static_ | |
235 class Bytecode_field: public Bytecode { | |
236 public: | |
237 void verify() const; | |
238 | |
239 int index() const; | |
240 bool is_static() const; | |
241 | |
242 // Creation | |
243 inline friend Bytecode_field* Bytecode_field_at(const methodOop method, address bcp); | |
244 }; | |
245 | |
246 inline Bytecode_field* Bytecode_field_at(const methodOop method, address bcp) { | |
247 Bytecode_field* b = (Bytecode_field*)bcp; | |
248 debug_only(b->verify()); | |
249 return b; | |
250 } | |
251 | |
252 | |
253 // Abstraction for {get,put}static | |
254 | |
255 class Bytecode_static: public Bytecode { | |
256 public: | |
257 void verify() const; | |
258 | |
259 // Returns the result type of the send by inspecting the field ref | |
260 BasicType result_type(methodOop method) const; | |
261 | |
262 // Creation | |
263 inline friend Bytecode_static* Bytecode_static_at(const methodOop method, address bcp); | |
264 }; | |
265 | |
266 inline Bytecode_static* Bytecode_static_at(const methodOop method, address bcp) { | |
267 Bytecode_static* b = (Bytecode_static*)bcp; | |
268 debug_only(b->verify()); | |
269 return b; | |
270 } | |
271 | |
272 | |
273 // Abstraction for checkcast | |
274 | |
275 class Bytecode_checkcast: public Bytecode { | |
276 public: | |
277 void verify() const { assert(Bytecodes::java_code(code()) == Bytecodes::_checkcast, "check checkcast"); } | |
278 | |
279 // Returns index | |
280 long index() const { return java_hwrd_at(1); }; | |
281 | |
282 // Creation | |
283 inline friend Bytecode_checkcast* Bytecode_checkcast_at(address bcp); | |
284 }; | |
285 | |
286 inline Bytecode_checkcast* Bytecode_checkcast_at(address bcp) { | |
287 Bytecode_checkcast* b = (Bytecode_checkcast*)bcp; | |
288 debug_only(b->verify()); | |
289 return b; | |
290 } | |
291 | |
292 | |
293 // Abstraction for instanceof | |
294 | |
295 class Bytecode_instanceof: public Bytecode { | |
296 public: | |
297 void verify() const { assert(code() == Bytecodes::_instanceof, "check instanceof"); } | |
298 | |
299 // Returns index | |
300 long index() const { return java_hwrd_at(1); }; | |
301 | |
302 // Creation | |
303 inline friend Bytecode_instanceof* Bytecode_instanceof_at(address bcp); | |
304 }; | |
305 | |
306 inline Bytecode_instanceof* Bytecode_instanceof_at(address bcp) { | |
307 Bytecode_instanceof* b = (Bytecode_instanceof*)bcp; | |
308 debug_only(b->verify()); | |
309 return b; | |
310 } | |
311 | |
312 | |
313 class Bytecode_new: public Bytecode { | |
314 public: | |
315 void verify() const { assert(java_code() == Bytecodes::_new, "check new"); } | |
316 | |
317 // Returns index | |
318 long index() const { return java_hwrd_at(1); }; | |
319 | |
320 // Creation | |
321 inline friend Bytecode_new* Bytecode_new_at(address bcp); | |
322 }; | |
323 | |
324 inline Bytecode_new* Bytecode_new_at(address bcp) { | |
325 Bytecode_new* b = (Bytecode_new*)bcp; | |
326 debug_only(b->verify()); | |
327 return b; | |
328 } | |
329 | |
330 | |
331 class Bytecode_multianewarray: public Bytecode { | |
332 public: | |
333 void verify() const { assert(java_code() == Bytecodes::_multianewarray, "check new"); } | |
334 | |
335 // Returns index | |
336 long index() const { return java_hwrd_at(1); }; | |
337 | |
338 // Creation | |
339 inline friend Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp); | |
340 }; | |
341 | |
342 inline Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp) { | |
343 Bytecode_multianewarray* b = (Bytecode_multianewarray*)bcp; | |
344 debug_only(b->verify()); | |
345 return b; | |
346 } | |
347 | |
348 | |
349 class Bytecode_anewarray: public Bytecode { | |
350 public: | |
351 void verify() const { assert(java_code() == Bytecodes::_anewarray, "check anewarray"); } | |
352 | |
353 // Returns index | |
354 long index() const { return java_hwrd_at(1); }; | |
355 | |
356 // Creation | |
357 inline friend Bytecode_anewarray* Bytecode_anewarray_at(address bcp); | |
358 }; | |
359 | |
360 inline Bytecode_anewarray* Bytecode_anewarray_at(address bcp) { | |
361 Bytecode_anewarray* b = (Bytecode_anewarray*)bcp; | |
362 debug_only(b->verify()); | |
363 return b; | |
364 } | |
365 | |
366 | |
367 // Abstraction for ldc, ldc_w and ldc2_w | |
368 | |
369 class Bytecode_loadconstant: public Bytecode { | |
370 public: | |
371 void verify() const { | |
372 Bytecodes::Code stdc = Bytecodes::java_code(code()); | |
373 assert(stdc == Bytecodes::_ldc || | |
374 stdc == Bytecodes::_ldc_w || | |
375 stdc == Bytecodes::_ldc2_w, "load constant"); | |
376 } | |
377 | |
378 int index() const; | |
379 | |
380 inline friend Bytecode_loadconstant* Bytecode_loadconstant_at(const methodOop method, address bcp); | |
381 }; | |
382 | |
383 inline Bytecode_loadconstant* Bytecode_loadconstant_at(const methodOop method, address bcp) { | |
384 Bytecode_loadconstant* b = (Bytecode_loadconstant*)bcp; | |
385 debug_only(b->verify()); | |
386 return b; | |
387 } |