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annotate src/share/vm/interpreter/bytecodeInterpreter.hpp @ 1764:14197af1010e
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date | Fri, 27 Aug 2010 17:35:08 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #ifdef CC_INTERP | |
26 | |
27 // CVM definitions find hotspot equivalents... | |
28 | |
29 union VMJavaVal64 { | |
30 jlong l; | |
31 jdouble d; | |
32 uint32_t v[2]; | |
33 }; | |
34 | |
35 | |
36 typedef class BytecodeInterpreter* interpreterState; | |
37 | |
38 struct call_message { | |
39 class methodOopDesc* _callee; /* method to call during call_method request */ | |
40 address _callee_entry_point; /* address to jump to for call_method request */ | |
41 int _bcp_advance; /* size of the invoke bytecode operation */ | |
42 }; | |
43 | |
44 struct osr_message { | |
45 address _osr_buf; /* the osr buffer */ | |
46 address _osr_entry; /* the entry to the osr method */ | |
47 }; | |
48 | |
49 struct osr_result { | |
50 nmethod* nm; /* osr nmethod */ | |
51 address return_addr; /* osr blob return address */ | |
52 }; | |
53 | |
54 // Result returned to frame manager | |
55 union frame_manager_message { | |
56 call_message _to_call; /* describes callee */ | |
57 Bytecodes::Code _return_kind; /* i_return, a_return, ... */ | |
58 osr_message _osr; /* describes the osr */ | |
59 osr_result _osr_result; /* result of OSR request */ | |
60 }; | |
61 | |
62 class BytecodeInterpreter : StackObj { | |
63 friend class SharedRuntime; | |
64 friend class AbstractInterpreterGenerator; | |
65 friend class CppInterpreterGenerator; | |
66 friend class InterpreterGenerator; | |
67 friend class InterpreterMacroAssembler; | |
68 friend class frame; | |
69 friend class VMStructs; | |
70 | |
71 public: | |
72 enum messages { | |
73 no_request = 0, // unused | |
74 initialize, // Perform one time interpreter initializations (assumes all switches set) | |
75 // status message to C++ interpreter | |
76 method_entry, // initial method entry to interpreter | |
77 method_resume, // frame manager response to return_from_method request (assuming a frame to resume) | |
78 deopt_resume, // returning from a native call into a deopted frame | |
79 deopt_resume2, // deopt resume as a result of a PopFrame | |
80 got_monitors, // frame manager response to more_monitors request | |
81 rethrow_exception, // unwinding and throwing exception | |
82 // requests to frame manager from C++ interpreter | |
83 call_method, // request for new frame from interpreter, manager responds with method_entry | |
84 return_from_method, // request from interpreter to unwind, manager responds with method_continue | |
85 more_monitors, // need a new monitor | |
86 throwing_exception, // unwind stack and rethrow | |
87 popping_frame, // unwind call and retry call | |
88 do_osr // request this invocation be OSR's | |
89 }; | |
90 | |
91 private: | |
92 JavaThread* _thread; // the vm's java thread pointer | |
93 address _bcp; // instruction pointer | |
94 intptr_t* _locals; // local variable pointer | |
95 constantPoolCacheOop _constants; // constant pool cache | |
96 methodOop _method; // method being executed | |
97 DataLayout* _mdx; // compiler profiling data for current bytecode | |
98 intptr_t* _stack; // expression stack | |
99 messages _msg; // frame manager <-> interpreter message | |
100 frame_manager_message _result; // result to frame manager | |
101 interpreterState _prev_link; // previous interpreter state | |
102 oop _oop_temp; // mirror for interpreted native, null otherwise | |
103 intptr_t* _stack_base; // base of expression stack | |
104 intptr_t* _stack_limit; // limit of expression stack | |
105 BasicObjectLock* _monitor_base; // base of monitors on the native stack | |
106 | |
107 | |
108 public: | |
109 // Constructor is only used by the initialization step. All other instances are created | |
110 // by the frame manager. | |
111 BytecodeInterpreter(messages msg); | |
112 | |
113 // | |
114 // Deoptimization support | |
115 // | |
116 static void layout_interpreterState(interpreterState to_fill, | |
117 frame* caller, | |
118 frame* interpreter_frame, | |
119 methodOop method, | |
120 intptr_t* locals, | |
121 intptr_t* stack, | |
122 intptr_t* stack_base, | |
123 intptr_t* monitor_base, | |
124 intptr_t* frame_bottom, | |
125 bool top_frame); | |
126 | |
127 /* | |
128 * Generic 32-bit wide "Java slot" definition. This type occurs | |
129 * in operand stacks, Java locals, object fields, constant pools. | |
130 */ | |
131 union VMJavaVal32 { | |
132 jint i; | |
133 jfloat f; | |
134 class oopDesc* r; | |
135 uint32_t raw; | |
136 }; | |
137 | |
138 /* | |
139 * Generic 64-bit Java value definition | |
140 */ | |
141 union VMJavaVal64 { | |
142 jlong l; | |
143 jdouble d; | |
144 uint32_t v[2]; | |
145 }; | |
146 | |
147 /* | |
148 * Generic 32-bit wide "Java slot" definition. This type occurs | |
149 * in Java locals, object fields, constant pools, and | |
150 * operand stacks (as a CVMStackVal32). | |
151 */ | |
152 typedef union VMSlotVal32 { | |
153 VMJavaVal32 j; /* For "Java" values */ | |
154 address a; /* a return created by jsr or jsr_w */ | |
155 } VMSlotVal32; | |
156 | |
157 | |
158 /* | |
159 * Generic 32-bit wide stack slot definition. | |
160 */ | |
161 union VMStackVal32 { | |
162 VMJavaVal32 j; /* For "Java" values */ | |
163 VMSlotVal32 s; /* any value from a "slot" or locals[] */ | |
164 }; | |
165 | |
166 inline JavaThread* thread() { return _thread; } | |
167 | |
168 inline address bcp() { return _bcp; } | |
169 inline void set_bcp(address new_bcp) { _bcp = new_bcp; } | |
170 | |
171 inline intptr_t* locals() { return _locals; } | |
172 | |
173 inline constantPoolCacheOop constants() { return _constants; } | |
174 inline methodOop method() { return _method; } | |
175 inline DataLayout* mdx() { return _mdx; } | |
176 inline void set_mdx(DataLayout *new_mdx) { _mdx = new_mdx; } | |
177 | |
178 inline messages msg() { return _msg; } | |
179 inline void set_msg(messages new_msg) { _msg = new_msg; } | |
180 | |
181 inline methodOop callee() { return _result._to_call._callee; } | |
182 inline void set_callee(methodOop new_callee) { _result._to_call._callee = new_callee; } | |
183 inline void set_callee_entry_point(address entry) { _result._to_call._callee_entry_point = entry; } | |
184 inline void set_osr_buf(address buf) { _result._osr._osr_buf = buf; } | |
185 inline void set_osr_entry(address entry) { _result._osr._osr_entry = entry; } | |
186 inline int bcp_advance() { return _result._to_call._bcp_advance; } | |
187 inline void set_bcp_advance(int count) { _result._to_call._bcp_advance = count; } | |
188 | |
189 inline void set_return_kind(Bytecodes::Code kind) { _result._return_kind = kind; } | |
190 | |
191 inline interpreterState prev() { return _prev_link; } | |
192 | |
193 inline intptr_t* stack() { return _stack; } | |
194 inline void set_stack(intptr_t* new_stack) { _stack = new_stack; } | |
195 | |
196 | |
197 inline intptr_t* stack_base() { return _stack_base; } | |
198 inline intptr_t* stack_limit() { return _stack_limit; } | |
199 | |
200 inline BasicObjectLock* monitor_base() { return _monitor_base; } | |
201 | |
202 /* | |
203 * 64-bit Arithmetic: | |
204 * | |
205 * The functions below follow the semantics of the | |
206 * ladd, land, ldiv, lmul, lor, lxor, and lrem bytecodes, | |
207 * respectively. | |
208 */ | |
209 | |
210 static jlong VMlongAdd(jlong op1, jlong op2); | |
211 static jlong VMlongAnd(jlong op1, jlong op2); | |
212 static jlong VMlongDiv(jlong op1, jlong op2); | |
213 static jlong VMlongMul(jlong op1, jlong op2); | |
214 static jlong VMlongOr (jlong op1, jlong op2); | |
215 static jlong VMlongSub(jlong op1, jlong op2); | |
216 static jlong VMlongXor(jlong op1, jlong op2); | |
217 static jlong VMlongRem(jlong op1, jlong op2); | |
218 | |
219 /* | |
220 * Shift: | |
221 * | |
222 * The functions below follow the semantics of the | |
223 * lushr, lshl, and lshr bytecodes, respectively. | |
224 */ | |
225 | |
226 static jlong VMlongUshr(jlong op1, jint op2); | |
227 static jlong VMlongShl (jlong op1, jint op2); | |
228 static jlong VMlongShr (jlong op1, jint op2); | |
229 | |
230 /* | |
231 * Unary: | |
232 * | |
233 * Return the negation of "op" (-op), according to | |
234 * the semantics of the lneg bytecode. | |
235 */ | |
236 | |
237 static jlong VMlongNeg(jlong op); | |
238 | |
239 /* | |
240 * Return the complement of "op" (~op) | |
241 */ | |
242 | |
243 static jlong VMlongNot(jlong op); | |
244 | |
245 | |
246 /* | |
247 * Comparisons to 0: | |
248 */ | |
249 | |
250 static int32_t VMlongLtz(jlong op); /* op <= 0 */ | |
251 static int32_t VMlongGez(jlong op); /* op >= 0 */ | |
252 static int32_t VMlongEqz(jlong op); /* op == 0 */ | |
253 | |
254 /* | |
255 * Between operands: | |
256 */ | |
257 | |
258 static int32_t VMlongEq(jlong op1, jlong op2); /* op1 == op2 */ | |
259 static int32_t VMlongNe(jlong op1, jlong op2); /* op1 != op2 */ | |
260 static int32_t VMlongGe(jlong op1, jlong op2); /* op1 >= op2 */ | |
261 static int32_t VMlongLe(jlong op1, jlong op2); /* op1 <= op2 */ | |
262 static int32_t VMlongLt(jlong op1, jlong op2); /* op1 < op2 */ | |
263 static int32_t VMlongGt(jlong op1, jlong op2); /* op1 > op2 */ | |
264 | |
265 /* | |
266 * Comparisons (returning an jint value: 0, 1, or -1) | |
267 * | |
268 * Between operands: | |
269 * | |
270 * Compare "op1" and "op2" according to the semantics of the | |
271 * "lcmp" bytecode. | |
272 */ | |
273 | |
274 static int32_t VMlongCompare(jlong op1, jlong op2); | |
275 | |
276 /* | |
277 * Convert int to long, according to "i2l" bytecode semantics | |
278 */ | |
279 static jlong VMint2Long(jint val); | |
280 | |
281 /* | |
282 * Convert long to int, according to "l2i" bytecode semantics | |
283 */ | |
284 static jint VMlong2Int(jlong val); | |
285 | |
286 /* | |
287 * Convert long to float, according to "l2f" bytecode semantics | |
288 */ | |
289 static jfloat VMlong2Float(jlong val); | |
290 | |
291 /* | |
292 * Convert long to double, according to "l2d" bytecode semantics | |
293 */ | |
294 static jdouble VMlong2Double(jlong val); | |
295 | |
296 /* | |
297 * Java floating-point float value manipulation. | |
298 * | |
299 * The result argument is, once again, an lvalue. | |
300 * | |
301 * Arithmetic: | |
302 * | |
303 * The functions below follow the semantics of the | |
304 * fadd, fsub, fmul, fdiv, and frem bytecodes, | |
305 * respectively. | |
306 */ | |
307 | |
308 static jfloat VMfloatAdd(jfloat op1, jfloat op2); | |
309 static jfloat VMfloatSub(jfloat op1, jfloat op2); | |
310 static jfloat VMfloatMul(jfloat op1, jfloat op2); | |
311 static jfloat VMfloatDiv(jfloat op1, jfloat op2); | |
312 static jfloat VMfloatRem(jfloat op1, jfloat op2); | |
313 | |
314 /* | |
315 * Unary: | |
316 * | |
317 * Return the negation of "op" (-op), according to | |
318 * the semantics of the fneg bytecode. | |
319 */ | |
320 | |
321 static jfloat VMfloatNeg(jfloat op); | |
322 | |
323 /* | |
324 * Comparisons (returning an int value: 0, 1, or -1) | |
325 * | |
326 * Between operands: | |
327 * | |
328 * Compare "op1" and "op2" according to the semantics of the | |
329 * "fcmpl" (direction is -1) or "fcmpg" (direction is 1) bytecodes. | |
330 */ | |
331 | |
332 static int32_t VMfloatCompare(jfloat op1, jfloat op2, | |
333 int32_t direction); | |
334 /* | |
335 * Conversion: | |
336 */ | |
337 | |
338 /* | |
339 * Convert float to double, according to "f2d" bytecode semantics | |
340 */ | |
341 | |
342 static jdouble VMfloat2Double(jfloat op); | |
343 | |
344 /* | |
345 ****************************************** | |
346 * Java double floating-point manipulation. | |
347 ****************************************** | |
348 * | |
349 * The result argument is, once again, an lvalue. | |
350 * | |
351 * Conversions: | |
352 */ | |
353 | |
354 /* | |
355 * Convert double to int, according to "d2i" bytecode semantics | |
356 */ | |
357 | |
358 static jint VMdouble2Int(jdouble val); | |
359 | |
360 /* | |
361 * Convert double to float, according to "d2f" bytecode semantics | |
362 */ | |
363 | |
364 static jfloat VMdouble2Float(jdouble val); | |
365 | |
366 /* | |
367 * Convert int to double, according to "i2d" bytecode semantics | |
368 */ | |
369 | |
370 static jdouble VMint2Double(jint val); | |
371 | |
372 /* | |
373 * Arithmetic: | |
374 * | |
375 * The functions below follow the semantics of the | |
376 * dadd, dsub, ddiv, dmul, and drem bytecodes, respectively. | |
377 */ | |
378 | |
379 static jdouble VMdoubleAdd(jdouble op1, jdouble op2); | |
380 static jdouble VMdoubleSub(jdouble op1, jdouble op2); | |
381 static jdouble VMdoubleDiv(jdouble op1, jdouble op2); | |
382 static jdouble VMdoubleMul(jdouble op1, jdouble op2); | |
383 static jdouble VMdoubleRem(jdouble op1, jdouble op2); | |
384 | |
385 /* | |
386 * Unary: | |
387 * | |
388 * Return the negation of "op" (-op), according to | |
389 * the semantics of the dneg bytecode. | |
390 */ | |
391 | |
392 static jdouble VMdoubleNeg(jdouble op); | |
393 | |
394 /* | |
395 * Comparisons (returning an int32_t value: 0, 1, or -1) | |
396 * | |
397 * Between operands: | |
398 * | |
399 * Compare "op1" and "op2" according to the semantics of the | |
400 * "dcmpl" (direction is -1) or "dcmpg" (direction is 1) bytecodes. | |
401 */ | |
402 | |
403 static int32_t VMdoubleCompare(jdouble op1, jdouble op2, int32_t direction); | |
404 | |
405 /* | |
406 * Copy two typeless 32-bit words from one location to another. | |
407 * This is semantically equivalent to: | |
408 * | |
409 * to[0] = from[0]; | |
410 * to[1] = from[1]; | |
411 * | |
412 * but this interface is provided for those platforms that could | |
413 * optimize this into a single 64-bit transfer. | |
414 */ | |
415 | |
416 static void VMmemCopy64(uint32_t to[2], const uint32_t from[2]); | |
417 | |
418 | |
419 // Arithmetic operations | |
420 | |
421 /* | |
422 * Java arithmetic methods. | |
423 * The functions below follow the semantics of the | |
424 * iadd, isub, imul, idiv, irem, iand, ior, ixor, | |
425 * and ineg bytecodes, respectively. | |
426 */ | |
427 | |
428 static jint VMintAdd(jint op1, jint op2); | |
429 static jint VMintSub(jint op1, jint op2); | |
430 static jint VMintMul(jint op1, jint op2); | |
431 static jint VMintDiv(jint op1, jint op2); | |
432 static jint VMintRem(jint op1, jint op2); | |
433 static jint VMintAnd(jint op1, jint op2); | |
434 static jint VMintOr (jint op1, jint op2); | |
435 static jint VMintXor(jint op1, jint op2); | |
436 | |
437 /* | |
438 * Shift Operation: | |
439 * The functions below follow the semantics of the | |
440 * iushr, ishl, and ishr bytecodes, respectively. | |
441 */ | |
442 | |
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443 static juint VMintUshr(jint op, jint num); |
0 | 444 static jint VMintShl (jint op, jint num); |
445 static jint VMintShr (jint op, jint num); | |
446 | |
447 /* | |
448 * Unary Operation: | |
449 * | |
450 * Return the negation of "op" (-op), according to | |
451 * the semantics of the ineg bytecode. | |
452 */ | |
453 | |
454 static jint VMintNeg(jint op); | |
455 | |
456 /* | |
457 * Int Conversions: | |
458 */ | |
459 | |
460 /* | |
461 * Convert int to float, according to "i2f" bytecode semantics | |
462 */ | |
463 | |
464 static jfloat VMint2Float(jint val); | |
465 | |
466 /* | |
467 * Convert int to byte, according to "i2b" bytecode semantics | |
468 */ | |
469 | |
470 static jbyte VMint2Byte(jint val); | |
471 | |
472 /* | |
473 * Convert int to char, according to "i2c" bytecode semantics | |
474 */ | |
475 | |
476 static jchar VMint2Char(jint val); | |
477 | |
478 /* | |
479 * Convert int to short, according to "i2s" bytecode semantics | |
480 */ | |
481 | |
482 static jshort VMint2Short(jint val); | |
483 | |
484 /*========================================================================= | |
485 * Bytecode interpreter operations | |
486 *=======================================================================*/ | |
487 | |
488 static void dup(intptr_t *tos); | |
489 static void dup2(intptr_t *tos); | |
490 static void dup_x1(intptr_t *tos); /* insert top word two down */ | |
491 static void dup_x2(intptr_t *tos); /* insert top word three down */ | |
492 static void dup2_x1(intptr_t *tos); /* insert top 2 slots three down */ | |
493 static void dup2_x2(intptr_t *tos); /* insert top 2 slots four down */ | |
494 static void swap(intptr_t *tos); /* swap top two elements */ | |
495 | |
496 // umm don't like this method modifies its object | |
497 | |
498 // The Interpreter used when | |
499 static void run(interpreterState istate); | |
500 // The interpreter used if JVMTI needs interpreter events | |
501 static void runWithChecks(interpreterState istate); | |
502 static void End_Of_Interpreter(void); | |
503 | |
504 // Inline static functions for Java Stack and Local manipulation | |
505 | |
506 static address stack_slot(intptr_t *tos, int offset); | |
507 static jint stack_int(intptr_t *tos, int offset); | |
508 static jfloat stack_float(intptr_t *tos, int offset); | |
509 static oop stack_object(intptr_t *tos, int offset); | |
510 static jdouble stack_double(intptr_t *tos, int offset); | |
511 static jlong stack_long(intptr_t *tos, int offset); | |
512 | |
513 // only used for value types | |
514 static void set_stack_slot(intptr_t *tos, address value, int offset); | |
515 static void set_stack_int(intptr_t *tos, int value, int offset); | |
516 static void set_stack_float(intptr_t *tos, jfloat value, int offset); | |
517 static void set_stack_object(intptr_t *tos, oop value, int offset); | |
518 | |
519 // needs to be platform dep for the 32 bit platforms. | |
520 static void set_stack_double(intptr_t *tos, jdouble value, int offset); | |
521 static void set_stack_long(intptr_t *tos, jlong value, int offset); | |
522 | |
523 static void set_stack_double_from_addr(intptr_t *tos, address addr, int offset); | |
524 static void set_stack_long_from_addr(intptr_t *tos, address addr, int offset); | |
525 | |
526 // Locals | |
527 | |
528 static address locals_slot(intptr_t* locals, int offset); | |
529 static jint locals_int(intptr_t* locals, int offset); | |
530 static jfloat locals_float(intptr_t* locals, int offset); | |
531 static oop locals_object(intptr_t* locals, int offset); | |
532 static jdouble locals_double(intptr_t* locals, int offset); | |
533 static jlong locals_long(intptr_t* locals, int offset); | |
534 | |
535 static address locals_long_at(intptr_t* locals, int offset); | |
536 static address locals_double_at(intptr_t* locals, int offset); | |
537 | |
538 static void set_locals_slot(intptr_t *locals, address value, int offset); | |
539 static void set_locals_int(intptr_t *locals, jint value, int offset); | |
540 static void set_locals_float(intptr_t *locals, jfloat value, int offset); | |
541 static void set_locals_object(intptr_t *locals, oop value, int offset); | |
542 static void set_locals_double(intptr_t *locals, jdouble value, int offset); | |
543 static void set_locals_long(intptr_t *locals, jlong value, int offset); | |
544 static void set_locals_double_from_addr(intptr_t *locals, | |
545 address addr, int offset); | |
546 static void set_locals_long_from_addr(intptr_t *locals, | |
547 address addr, int offset); | |
548 | |
549 static void astore(intptr_t* topOfStack, int stack_offset, | |
550 intptr_t* locals, int locals_offset); | |
551 | |
552 // Support for dup and swap | |
553 static void copy_stack_slot(intptr_t *tos, int from_offset, int to_offset); | |
554 | |
555 #ifndef PRODUCT | |
556 static const char* C_msg(BytecodeInterpreter::messages msg); | |
557 void print(); | |
558 #endif // PRODUCT | |
559 | |
560 // Platform fields/methods | |
561 # include "incls/_bytecodeInterpreter_pd.hpp.incl" | |
562 | |
563 }; // BytecodeInterpreter | |
564 | |
565 #endif // CC_INTERP |