Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/frame.hpp @ 2874:d90bf514d647
Renamed packages.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 08 Jun 2011 08:59:54 +0200 |
parents | 1d1603768966 |
children | 2e038ad0c1d0 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_FRAME_HPP |
26 #define SHARE_VM_RUNTIME_FRAME_HPP | |
27 | |
28 #include "asm/assembler.hpp" | |
29 #include "oops/methodOop.hpp" | |
30 #include "runtime/basicLock.hpp" | |
31 #include "runtime/monitorChunk.hpp" | |
32 #include "runtime/registerMap.hpp" | |
33 #include "utilities/top.hpp" | |
34 #ifdef COMPILER2 | |
35 #ifdef TARGET_ARCH_MODEL_x86_32 | |
36 # include "adfiles/adGlobals_x86_32.hpp" | |
37 #endif | |
38 #ifdef TARGET_ARCH_MODEL_x86_64 | |
39 # include "adfiles/adGlobals_x86_64.hpp" | |
40 #endif | |
41 #ifdef TARGET_ARCH_MODEL_sparc | |
42 # include "adfiles/adGlobals_sparc.hpp" | |
43 #endif | |
44 #ifdef TARGET_ARCH_MODEL_zero | |
45 # include "adfiles/adGlobals_zero.hpp" | |
46 #endif | |
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47 #ifdef TARGET_ARCH_MODEL_arm |
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48 # include "adfiles/adGlobals_arm.hpp" |
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49 #endif |
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50 #ifdef TARGET_ARCH_MODEL_ppc |
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51 # include "adfiles/adGlobals_ppc.hpp" |
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52 #endif |
1972 | 53 #endif |
54 #ifdef ZERO | |
55 #ifdef TARGET_ARCH_zero | |
56 # include "stack_zero.hpp" | |
57 #endif | |
58 #endif | |
59 | |
0 | 60 typedef class BytecodeInterpreter* interpreterState; |
61 | |
62 class CodeBlob; | |
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63 class vframeArray; |
0 | 64 |
65 | |
66 // A frame represents a physical stack frame (an activation). Frames | |
67 // can be C or Java frames, and the Java frames can be interpreted or | |
68 // compiled. In contrast, vframes represent source-level activations, | |
69 // so that one physical frame can correspond to multiple source level | |
70 // frames because of inlining. | |
71 | |
72 class frame VALUE_OBJ_CLASS_SPEC { | |
73 private: | |
74 // Instance variables: | |
75 intptr_t* _sp; // stack pointer (from Thread::last_Java_sp) | |
76 address _pc; // program counter (the next instruction after the call) | |
77 | |
78 CodeBlob* _cb; // CodeBlob that "owns" pc | |
79 enum deopt_state { | |
80 not_deoptimized, | |
81 is_deoptimized, | |
82 unknown | |
83 }; | |
84 | |
85 deopt_state _deopt_state; | |
86 | |
87 public: | |
88 // Constructors | |
89 frame(); | |
90 | |
91 // Accessors | |
92 | |
93 // pc: Returns the pc at which this frame will continue normally. | |
94 // It must point at the beginning of the next instruction to execute. | |
95 address pc() const { return _pc; } | |
96 | |
97 // This returns the pc that if you were in the debugger you'd see. Not | |
98 // the idealized value in the frame object. This undoes the magic conversion | |
99 // that happens for deoptimized frames. In addition it makes the value the | |
100 // hardware would want to see in the native frame. The only user (at this point) | |
101 // is deoptimization. It likely no one else should ever use it. | |
102 address raw_pc() const; | |
103 | |
104 void set_pc( address newpc ); | |
105 | |
106 intptr_t* sp() const { return _sp; } | |
107 void set_sp( intptr_t* newsp ) { _sp = newsp; } | |
108 | |
109 | |
110 CodeBlob* cb() const { return _cb; } | |
111 | |
112 // patching operations | |
113 void patch_pc(Thread* thread, address pc); | |
114 | |
115 // Every frame needs to return a unique id which distinguishes it from all other frames. | |
116 // For sparc and ia32 use sp. ia64 can have memory frames that are empty so multiple frames | |
117 // will have identical sp values. For ia64 the bsp (fp) value will serve. No real frame | |
118 // should have an id() of NULL so it is a distinguishing value for an unmatchable frame. | |
119 // We also have relationals which allow comparing a frame to anoth frame's id() allow | |
120 // us to distinguish younger (more recent activation) from older (less recent activations) | |
121 // A NULL id is only valid when comparing for equality. | |
122 | |
123 intptr_t* id(void) const; | |
124 bool is_younger(intptr_t* id) const; | |
125 bool is_older(intptr_t* id) const; | |
126 | |
127 // testers | |
128 | |
129 // Compares for strict equality. Rarely used or needed. | |
130 // It can return a different result than f1.id() == f2.id() | |
131 bool equal(frame other) const; | |
132 | |
133 // type testers | |
134 bool is_interpreted_frame() const; | |
135 bool is_java_frame() const; | |
136 bool is_entry_frame() const; // Java frame called from C? | |
137 bool is_native_frame() const; | |
138 bool is_runtime_frame() const; | |
139 bool is_compiled_frame() const; | |
140 bool is_safepoint_blob_frame() const; | |
141 bool is_deoptimized_frame() const; | |
142 | |
143 // testers | |
144 bool is_first_frame() const; // oldest frame? (has no sender) | |
145 bool is_first_java_frame() const; // same for Java frame | |
146 | |
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147 bool is_interpreted_frame_valid(JavaThread* thread) const; // performs sanity checks on interpreted frames. |
0 | 148 |
149 // tells whether this frame is marked for deoptimization | |
150 bool should_be_deoptimized() const; | |
151 | |
152 // tells whether this frame can be deoptimized | |
153 bool can_be_deoptimized() const; | |
154 | |
155 // returns the frame size in stack slots | |
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156 int frame_size(RegisterMap* map) const; |
0 | 157 |
158 // returns the sending frame | |
159 frame sender(RegisterMap* map) const; | |
160 | |
161 // for Profiling - acting on another frame. walks sender frames | |
162 // if valid. | |
163 frame profile_find_Java_sender_frame(JavaThread *thread); | |
164 bool safe_for_sender(JavaThread *thread); | |
165 | |
166 // returns the sender, but skips conversion frames | |
167 frame real_sender(RegisterMap* map) const; | |
168 | |
169 // returns the the sending Java frame, skipping any intermediate C frames | |
170 // NB: receiver must not be first frame | |
171 frame java_sender() const; | |
172 | |
173 private: | |
174 // Helper methods for better factored code in frame::sender | |
175 frame sender_for_compiled_frame(RegisterMap* map) const; | |
176 frame sender_for_entry_frame(RegisterMap* map) const; | |
177 frame sender_for_interpreter_frame(RegisterMap* map) const; | |
178 frame sender_for_native_frame(RegisterMap* map) const; | |
179 | |
180 // All frames: | |
181 | |
182 // A low-level interface for vframes: | |
183 | |
184 public: | |
185 | |
186 intptr_t* addr_at(int index) const { return &fp()[index]; } | |
187 intptr_t at(int index) const { return *addr_at(index); } | |
188 | |
189 // accessors for locals | |
190 oop obj_at(int offset) const { return *obj_at_addr(offset); } | |
191 void obj_at_put(int offset, oop value) { *obj_at_addr(offset) = value; } | |
192 | |
193 jint int_at(int offset) const { return *int_at_addr(offset); } | |
194 void int_at_put(int offset, jint value) { *int_at_addr(offset) = value; } | |
195 | |
196 oop* obj_at_addr(int offset) const { return (oop*) addr_at(offset); } | |
197 | |
198 oop* adjusted_obj_at_addr(methodOop method, int index) { return obj_at_addr(adjust_offset(method, index)); } | |
199 | |
200 private: | |
201 jint* int_at_addr(int offset) const { return (jint*) addr_at(offset); } | |
202 | |
203 public: | |
204 // Link (i.e., the pointer to the previous frame) | |
205 intptr_t* link() const; | |
206 void set_link(intptr_t* addr); | |
207 | |
208 // Return address | |
209 address sender_pc() const; | |
210 | |
211 // Support for deoptimization | |
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212 void deoptimize(JavaThread* thread); |
0 | 213 |
214 // The frame's original SP, before any extension by an interpreted callee; | |
215 // used for packing debug info into vframeArray objects and vframeArray lookup. | |
216 intptr_t* unextended_sp() const; | |
217 | |
218 // returns the stack pointer of the calling frame | |
219 intptr_t* sender_sp() const; | |
220 | |
221 | |
222 // Interpreter frames: | |
223 | |
224 private: | |
225 intptr_t** interpreter_frame_locals_addr() const; | |
226 intptr_t* interpreter_frame_bcx_addr() const; | |
227 intptr_t* interpreter_frame_mdx_addr() const; | |
228 | |
229 public: | |
230 // Locals | |
231 | |
232 // The _at version returns a pointer because the address is used for GC. | |
233 intptr_t* interpreter_frame_local_at(int index) const; | |
234 | |
235 void interpreter_frame_set_locals(intptr_t* locs); | |
236 | |
237 // byte code index/pointer (use these functions for unchecked frame access only!) | |
238 intptr_t interpreter_frame_bcx() const { return *interpreter_frame_bcx_addr(); } | |
239 void interpreter_frame_set_bcx(intptr_t bcx); | |
240 | |
241 // byte code index | |
242 jint interpreter_frame_bci() const; | |
243 void interpreter_frame_set_bci(jint bci); | |
244 | |
245 // byte code pointer | |
246 address interpreter_frame_bcp() const; | |
247 void interpreter_frame_set_bcp(address bcp); | |
248 | |
249 // Unchecked access to the method data index/pointer. | |
250 // Only use this if you know what you are doing. | |
251 intptr_t interpreter_frame_mdx() const { return *interpreter_frame_mdx_addr(); } | |
252 void interpreter_frame_set_mdx(intptr_t mdx); | |
253 | |
254 // method data pointer | |
255 address interpreter_frame_mdp() const; | |
256 void interpreter_frame_set_mdp(address dp); | |
257 | |
258 // Find receiver out of caller's (compiled) argument list | |
259 oop retrieve_receiver(RegisterMap *reg_map); | |
260 | |
261 // Return the monitor owner and BasicLock for compiled synchronized | |
262 // native methods so that biased locking can revoke the receiver's | |
2019 | 263 // bias if necessary. This is also used by JVMTI's GetLocalInstance method |
264 // (via VM_GetReceiver) to retrieve the receiver from a native wrapper frame. | |
265 BasicLock* get_native_monitor(); | |
266 oop get_native_receiver(); | |
0 | 267 |
268 // Find receiver for an invoke when arguments are just pushed on stack (i.e., callee stack-frame is | |
269 // not setup) | |
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270 oop interpreter_callee_receiver(Symbol* signature) { return *interpreter_callee_receiver_addr(signature); } |
0 | 271 |
272 | |
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273 oop* interpreter_callee_receiver_addr(Symbol* signature); |
0 | 274 |
275 | |
276 // expression stack (may go up or down, direction == 1 or -1) | |
277 public: | |
278 intptr_t* interpreter_frame_expression_stack() const; | |
279 static jint interpreter_frame_expression_stack_direction(); | |
280 | |
281 // The _at version returns a pointer because the address is used for GC. | |
282 intptr_t* interpreter_frame_expression_stack_at(jint offset) const; | |
283 | |
284 // top of expression stack | |
285 intptr_t* interpreter_frame_tos_at(jint offset) const; | |
286 intptr_t* interpreter_frame_tos_address() const; | |
287 | |
288 | |
289 jint interpreter_frame_expression_stack_size() const; | |
290 | |
291 intptr_t* interpreter_frame_sender_sp() const; | |
292 | |
293 #ifndef CC_INTERP | |
294 // template based interpreter deoptimization support | |
295 void set_interpreter_frame_sender_sp(intptr_t* sender_sp); | |
296 void interpreter_frame_set_monitor_end(BasicObjectLock* value); | |
297 #endif // CC_INTERP | |
298 | |
299 // BasicObjectLocks: | |
300 // | |
301 // interpreter_frame_monitor_begin is higher in memory than interpreter_frame_monitor_end | |
302 // Interpreter_frame_monitor_begin points to one element beyond the oldest one, | |
303 // interpreter_frame_monitor_end points to the youngest one, or if there are none, | |
304 // it points to one beyond where the first element will be. | |
305 // interpreter_frame_monitor_size reports the allocation size of a monitor in the interpreter stack. | |
306 // this value is >= BasicObjectLock::size(), and may be rounded up | |
307 | |
308 BasicObjectLock* interpreter_frame_monitor_begin() const; | |
309 BasicObjectLock* interpreter_frame_monitor_end() const; | |
310 BasicObjectLock* next_monitor_in_interpreter_frame(BasicObjectLock* current) const; | |
311 BasicObjectLock* previous_monitor_in_interpreter_frame(BasicObjectLock* current) const; | |
312 static int interpreter_frame_monitor_size(); | |
313 | |
314 void interpreter_frame_verify_monitor(BasicObjectLock* value) const; | |
315 | |
316 // Tells whether the current interpreter_frame frame pointer | |
317 // corresponds to the old compiled/deoptimized fp | |
318 // The receiver used to be a top level frame | |
319 bool interpreter_frame_equals_unpacked_fp(intptr_t* fp); | |
320 | |
321 // Return/result value from this interpreter frame | |
322 // If the method return type is T_OBJECT or T_ARRAY populates oop_result | |
323 // For other (non-T_VOID) the appropriate field in the jvalue is populated | |
324 // with the result value. | |
325 // Should only be called when at method exit when the method is not | |
326 // exiting due to an exception. | |
327 BasicType interpreter_frame_result(oop* oop_result, jvalue* value_result); | |
328 | |
329 public: | |
330 // Method & constant pool cache | |
331 methodOop interpreter_frame_method() const; | |
332 void interpreter_frame_set_method(methodOop method); | |
333 methodOop* interpreter_frame_method_addr() const; | |
334 constantPoolCacheOop* interpreter_frame_cache_addr() const; | |
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335 #ifdef PPC |
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336 oop* interpreter_frame_mirror_addr() const; |
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337 #endif |
0 | 338 |
339 public: | |
340 // Entry frames | |
341 JavaCallWrapper* entry_frame_call_wrapper() const; | |
342 intptr_t* entry_frame_argument_at(int offset) const; | |
343 | |
344 // tells whether there is another chunk of Delta stack above | |
345 bool entry_frame_is_first() const; | |
346 | |
347 // Compiled frames: | |
348 | |
349 public: | |
350 // Given the index of a local, and the number of argument words | |
351 // in this stack frame, tell which word of the stack frame to find | |
352 // the local in. Arguments are stored above the ofp/rpc pair, | |
353 // while other locals are stored below it. | |
354 // Since monitors (BasicLock blocks) are also assigned indexes, | |
355 // but may have different storage requirements, their presence | |
356 // can also affect the calculation of offsets. | |
357 static int local_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors); | |
358 | |
359 // Given the index of a monitor, etc., tell which word of the | |
360 // stack frame contains the start of the BasicLock block. | |
361 // Note that the local index by convention is the __higher__ | |
362 // of the two indexes allocated to the block. | |
363 static int monitor_offset_for_compiler(int local_index, int nof_args, int max_nof_locals, int max_nof_monitors); | |
364 | |
365 // Tell the smallest value that local_offset_for_compiler will attain. | |
366 // This is used to help determine how much stack frame to allocate. | |
367 static int min_local_offset_for_compiler(int nof_args, int max_nof_locals, int max_nof_monitors); | |
368 | |
369 // Tells if this register must be spilled during a call. | |
370 // On Intel, all registers are smashed by calls. | |
371 static bool volatile_across_calls(Register reg); | |
372 | |
373 | |
374 // Safepoints | |
375 | |
376 public: | |
377 oop saved_oop_result(RegisterMap* map) const; | |
378 void set_saved_oop_result(RegisterMap* map, oop obj); | |
379 | |
380 // For debugging | |
381 private: | |
382 const char* print_name() const; | |
383 | |
384 public: | |
385 void print_value() const { print_value_on(tty,NULL); } | |
386 void print_value_on(outputStream* st, JavaThread *thread) const; | |
387 void print_on(outputStream* st) const; | |
388 void interpreter_frame_print_on(outputStream* st) const; | |
389 void print_on_error(outputStream* st, char* buf, int buflen, bool verbose = false) const; | |
390 | |
391 // Conversion from an VMReg to physical stack location | |
392 oop* oopmapreg_to_location(VMReg reg, const RegisterMap* regmap) const; | |
393 | |
394 // Oops-do's | |
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395 void oops_compiled_arguments_do(Symbol* signature, bool has_receiver, const RegisterMap* reg_map, OopClosure* f); |
0 | 396 void oops_interpreted_do(OopClosure* f, const RegisterMap* map, bool query_oop_map_cache = true); |
397 | |
398 private: | |
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399 void oops_interpreted_arguments_do(Symbol* signature, bool has_receiver, OopClosure* f); |
0 | 400 |
401 // Iteration of oops | |
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402 void oops_do_internal(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map, bool use_interpreter_oop_map_cache); |
0 | 403 void oops_entry_do(OopClosure* f, const RegisterMap* map); |
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404 void oops_code_blob_do(OopClosure* f, CodeBlobClosure* cf, const RegisterMap* map); |
0 | 405 int adjust_offset(methodOop method, int index); // helper for above fn |
406 public: | |
407 // Memory management | |
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408 void oops_do(OopClosure* f, CodeBlobClosure* cf, RegisterMap* map) { oops_do_internal(f, cf, map, true); } |
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409 void nmethods_do(CodeBlobClosure* cf); |
0 | 410 |
411 void gc_prologue(); | |
412 void gc_epilogue(); | |
413 void pd_gc_epilog(); | |
414 | |
415 # ifdef ENABLE_ZAP_DEAD_LOCALS | |
416 private: | |
417 class CheckValueClosure: public OopClosure { | |
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418 public: |
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419 void do_oop(oop* p); |
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420 void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
0 | 421 }; |
422 static CheckValueClosure _check_value; | |
423 | |
424 class CheckOopClosure: public OopClosure { | |
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425 public: |
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426 void do_oop(oop* p); |
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427 void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
0 | 428 }; |
429 static CheckOopClosure _check_oop; | |
430 | |
431 static void check_derived_oop(oop* base, oop* derived); | |
432 | |
433 class ZapDeadClosure: public OopClosure { | |
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434 public: |
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435 void do_oop(oop* p); |
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436 void do_oop(narrowOop* p) { ShouldNotReachHere(); } |
0 | 437 }; |
438 static ZapDeadClosure _zap_dead; | |
439 | |
440 public: | |
441 // Zapping | |
442 void zap_dead_locals (JavaThread* thread, const RegisterMap* map); | |
443 void zap_dead_interpreted_locals(JavaThread* thread, const RegisterMap* map); | |
444 void zap_dead_compiled_locals (JavaThread* thread, const RegisterMap* map); | |
445 void zap_dead_entry_locals (JavaThread* thread, const RegisterMap* map); | |
446 void zap_dead_deoptimized_locals(JavaThread* thread, const RegisterMap* map); | |
447 # endif | |
448 // Verification | |
449 void verify(const RegisterMap* map); | |
450 static bool verify_return_pc(address x); | |
451 static bool is_bci(intptr_t bcx); | |
452 // Usage: | |
453 // assert(frame::verify_return_pc(return_address), "must be a return pc"); | |
454 | |
455 int pd_oop_map_offset_adjustment() const; | |
456 | |
1972 | 457 #ifdef TARGET_ARCH_x86 |
458 # include "frame_x86.hpp" | |
459 #endif | |
460 #ifdef TARGET_ARCH_sparc | |
461 # include "frame_sparc.hpp" | |
462 #endif | |
463 #ifdef TARGET_ARCH_zero | |
464 # include "frame_zero.hpp" | |
465 #endif | |
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466 #ifdef TARGET_ARCH_arm |
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467 # include "frame_arm.hpp" |
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468 #endif |
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469 #ifdef TARGET_ARCH_ppc |
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470 # include "frame_ppc.hpp" |
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471 #endif |
1972 | 472 |
0 | 473 }; |
474 | |
475 | |
476 // | |
477 // StackFrameStream iterates through the frames of a thread starting from | |
478 // top most frame. It automatically takes care of updating the location of | |
479 // all (callee-saved) registers. Notice: If a thread is stopped at | |
480 // a safepoint, all registers are saved, not only the callee-saved ones. | |
481 // | |
482 // Use: | |
483 // | |
484 // for(StackFrameStream fst(thread); !fst.is_done(); fst.next()) { | |
485 // ... | |
486 // } | |
487 // | |
488 class StackFrameStream : public StackObj { | |
489 private: | |
490 frame _fr; | |
491 RegisterMap _reg_map; | |
492 bool _is_done; | |
493 public: | |
494 StackFrameStream(JavaThread *thread, bool update = true); | |
495 | |
496 // Iteration | |
497 bool is_done() { return (_is_done) ? true : (_is_done = _fr.is_first_frame(), false); } | |
498 void next() { if (!_is_done) _fr = _fr.sender(&_reg_map); } | |
499 | |
500 // Query | |
501 frame *current() { return &_fr; } | |
502 RegisterMap* register_map() { return &_reg_map; } | |
503 }; | |
1972 | 504 |
505 #endif // SHARE_VM_RUNTIME_FRAME_HPP |