Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecode.hpp @ 1135:e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
Summary: During the work for 6829187 we have fixed a number of basic bugs which are logically grouped with 6815692 and 6858164 but which must be reviewed and pushed separately.
Reviewed-by: kvn, never
author | twisti |
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date | Mon, 04 Jan 2010 18:38:08 +0100 |
parents | bd02caa94611 |
children | dd57230ba8fe |
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() || | |
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213 is_invokespecial() || |
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214 is_invokedynamic(); } |
0 | 215 |
216 // Creation | |
217 inline friend Bytecode_invoke* Bytecode_invoke_at(methodHandle method, int bci); | |
218 | |
219 // Like Bytecode_invoke_at. Instead it returns NULL if the bci is not at an invoke. | |
220 inline friend Bytecode_invoke* Bytecode_invoke_at_check(methodHandle method, int bci); | |
221 }; | |
222 | |
223 inline Bytecode_invoke* Bytecode_invoke_at(methodHandle method, int bci) { | |
224 Bytecode_invoke* b = new Bytecode_invoke(method, bci); | |
225 debug_only(b->verify()); | |
226 return b; | |
227 } | |
228 | |
229 inline Bytecode_invoke* Bytecode_invoke_at_check(methodHandle method, int bci) { | |
230 Bytecode_invoke* b = new Bytecode_invoke(method, bci); | |
231 return b->is_valid() ? b : NULL; | |
232 } | |
233 | |
234 | |
235 // Abstraction for all field accesses (put/get field/static_ | |
236 class Bytecode_field: public Bytecode { | |
237 public: | |
238 void verify() const; | |
239 | |
240 int index() const; | |
241 bool is_static() const; | |
242 | |
243 // Creation | |
244 inline friend Bytecode_field* Bytecode_field_at(const methodOop method, address bcp); | |
245 }; | |
246 | |
247 inline Bytecode_field* Bytecode_field_at(const methodOop method, address bcp) { | |
248 Bytecode_field* b = (Bytecode_field*)bcp; | |
249 debug_only(b->verify()); | |
250 return b; | |
251 } | |
252 | |
253 | |
254 // Abstraction for {get,put}static | |
255 | |
256 class Bytecode_static: public Bytecode { | |
257 public: | |
258 void verify() const; | |
259 | |
260 // Returns the result type of the send by inspecting the field ref | |
261 BasicType result_type(methodOop method) const; | |
262 | |
263 // Creation | |
264 inline friend Bytecode_static* Bytecode_static_at(const methodOop method, address bcp); | |
265 }; | |
266 | |
267 inline Bytecode_static* Bytecode_static_at(const methodOop method, address bcp) { | |
268 Bytecode_static* b = (Bytecode_static*)bcp; | |
269 debug_only(b->verify()); | |
270 return b; | |
271 } | |
272 | |
273 | |
274 // Abstraction for checkcast | |
275 | |
276 class Bytecode_checkcast: public Bytecode { | |
277 public: | |
278 void verify() const { assert(Bytecodes::java_code(code()) == Bytecodes::_checkcast, "check checkcast"); } | |
279 | |
280 // Returns index | |
281 long index() const { return java_hwrd_at(1); }; | |
282 | |
283 // Creation | |
284 inline friend Bytecode_checkcast* Bytecode_checkcast_at(address bcp); | |
285 }; | |
286 | |
287 inline Bytecode_checkcast* Bytecode_checkcast_at(address bcp) { | |
288 Bytecode_checkcast* b = (Bytecode_checkcast*)bcp; | |
289 debug_only(b->verify()); | |
290 return b; | |
291 } | |
292 | |
293 | |
294 // Abstraction for instanceof | |
295 | |
296 class Bytecode_instanceof: public Bytecode { | |
297 public: | |
298 void verify() const { assert(code() == Bytecodes::_instanceof, "check instanceof"); } | |
299 | |
300 // Returns index | |
301 long index() const { return java_hwrd_at(1); }; | |
302 | |
303 // Creation | |
304 inline friend Bytecode_instanceof* Bytecode_instanceof_at(address bcp); | |
305 }; | |
306 | |
307 inline Bytecode_instanceof* Bytecode_instanceof_at(address bcp) { | |
308 Bytecode_instanceof* b = (Bytecode_instanceof*)bcp; | |
309 debug_only(b->verify()); | |
310 return b; | |
311 } | |
312 | |
313 | |
314 class Bytecode_new: public Bytecode { | |
315 public: | |
316 void verify() const { assert(java_code() == Bytecodes::_new, "check new"); } | |
317 | |
318 // Returns index | |
319 long index() const { return java_hwrd_at(1); }; | |
320 | |
321 // Creation | |
322 inline friend Bytecode_new* Bytecode_new_at(address bcp); | |
323 }; | |
324 | |
325 inline Bytecode_new* Bytecode_new_at(address bcp) { | |
326 Bytecode_new* b = (Bytecode_new*)bcp; | |
327 debug_only(b->verify()); | |
328 return b; | |
329 } | |
330 | |
331 | |
332 class Bytecode_multianewarray: public Bytecode { | |
333 public: | |
334 void verify() const { assert(java_code() == Bytecodes::_multianewarray, "check new"); } | |
335 | |
336 // Returns index | |
337 long index() const { return java_hwrd_at(1); }; | |
338 | |
339 // Creation | |
340 inline friend Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp); | |
341 }; | |
342 | |
343 inline Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp) { | |
344 Bytecode_multianewarray* b = (Bytecode_multianewarray*)bcp; | |
345 debug_only(b->verify()); | |
346 return b; | |
347 } | |
348 | |
349 | |
350 class Bytecode_anewarray: public Bytecode { | |
351 public: | |
352 void verify() const { assert(java_code() == Bytecodes::_anewarray, "check anewarray"); } | |
353 | |
354 // Returns index | |
355 long index() const { return java_hwrd_at(1); }; | |
356 | |
357 // Creation | |
358 inline friend Bytecode_anewarray* Bytecode_anewarray_at(address bcp); | |
359 }; | |
360 | |
361 inline Bytecode_anewarray* Bytecode_anewarray_at(address bcp) { | |
362 Bytecode_anewarray* b = (Bytecode_anewarray*)bcp; | |
363 debug_only(b->verify()); | |
364 return b; | |
365 } | |
366 | |
367 | |
368 // Abstraction for ldc, ldc_w and ldc2_w | |
369 | |
370 class Bytecode_loadconstant: public Bytecode { | |
371 public: | |
372 void verify() const { | |
373 Bytecodes::Code stdc = Bytecodes::java_code(code()); | |
374 assert(stdc == Bytecodes::_ldc || | |
375 stdc == Bytecodes::_ldc_w || | |
376 stdc == Bytecodes::_ldc2_w, "load constant"); | |
377 } | |
378 | |
379 int index() const; | |
380 | |
381 inline friend Bytecode_loadconstant* Bytecode_loadconstant_at(const methodOop method, address bcp); | |
382 }; | |
383 | |
384 inline Bytecode_loadconstant* Bytecode_loadconstant_at(const methodOop method, address bcp) { | |
385 Bytecode_loadconstant* b = (Bytecode_loadconstant*)bcp; | |
386 debug_only(b->verify()); | |
387 return b; | |
388 } |