Thu, 19 Mar 2009 09:13:24 -0700
Merge
1 /*
2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved.
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 */
25 #include "incls/_precompiled.incl"
26 #include "incls/_interp_masm_x86_32.cpp.incl"
29 // Implementation of InterpreterMacroAssembler
30 #ifdef CC_INTERP
31 void InterpreterMacroAssembler::get_method(Register reg) {
32 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize)));
33 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method)));
34 }
35 #endif // CC_INTERP
38 #ifndef CC_INTERP
39 void InterpreterMacroAssembler::call_VM_leaf_base(
40 address entry_point,
41 int number_of_arguments
42 ) {
43 // interpreter specific
44 //
45 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer
46 // since these are callee saved registers and no blocking/
47 // GC can happen in leaf calls.
48 // Further Note: DO NOT save/restore bcp/locals. If a caller has
49 // already saved them so that it can use rsi/rdi as temporaries
50 // then a save/restore here will DESTROY the copy the caller
51 // saved! There used to be a save_bcp() that only happened in
52 // the ASSERT path (no restore_bcp). Which caused bizarre failures
53 // when jvm built with ASSERTs.
54 #ifdef ASSERT
55 { Label L;
56 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
57 jcc(Assembler::equal, L);
58 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL");
59 bind(L);
60 }
61 #endif
62 // super call
63 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments);
64 // interpreter specific
66 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals
67 // but since they may not have been saved (and we don't want to
68 // save them here (see note above) the assert is invalid.
69 }
72 void InterpreterMacroAssembler::call_VM_base(
73 Register oop_result,
74 Register java_thread,
75 Register last_java_sp,
76 address entry_point,
77 int number_of_arguments,
78 bool check_exceptions
79 ) {
80 #ifdef ASSERT
81 { Label L;
82 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
83 jcc(Assembler::equal, L);
84 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL");
85 bind(L);
86 }
87 #endif /* ASSERT */
88 // interpreter specific
89 //
90 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't
91 // really make a difference for these runtime calls, since they are
92 // slow anyway. Btw., bcp must be saved/restored since it may change
93 // due to GC.
94 assert(java_thread == noreg , "not expecting a precomputed java thread");
95 save_bcp();
96 // super call
97 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions);
98 // interpreter specific
99 restore_bcp();
100 restore_locals();
101 }
104 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) {
105 if (JvmtiExport::can_pop_frame()) {
106 Label L;
107 // Initiate popframe handling only if it is not already being processed. If the flag
108 // has the popframe_processing bit set, it means that this code is called *during* popframe
109 // handling - we don't want to reenter.
110 Register pop_cond = java_thread; // Not clear if any other register is available...
111 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset()));
112 testl(pop_cond, JavaThread::popframe_pending_bit);
113 jcc(Assembler::zero, L);
114 testl(pop_cond, JavaThread::popframe_processing_bit);
115 jcc(Assembler::notZero, L);
116 // Call Interpreter::remove_activation_preserving_args_entry() to get the
117 // address of the same-named entrypoint in the generated interpreter code.
118 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry));
119 jmp(rax);
120 bind(L);
121 get_thread(java_thread);
122 }
123 }
126 void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
127 get_thread(rcx);
128 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset()));
129 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset());
130 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset());
131 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset());
132 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset()
133 + in_ByteSize(wordSize));
134 switch (state) {
135 case atos: movptr(rax, oop_addr);
136 movptr(oop_addr, NULL_WORD);
137 verify_oop(rax, state); break;
138 case ltos:
139 movl(rdx, val_addr1); // fall through
140 case btos: // fall through
141 case ctos: // fall through
142 case stos: // fall through
143 case itos: movl(rax, val_addr); break;
144 case ftos: fld_s(val_addr); break;
145 case dtos: fld_d(val_addr); break;
146 case vtos: /* nothing to do */ break;
147 default : ShouldNotReachHere();
148 }
149 // Clean up tos value in the thread object
150 movl(tos_addr, (int32_t) ilgl);
151 movptr(val_addr, NULL_WORD);
152 NOT_LP64(movptr(val_addr1, NULL_WORD));
153 }
156 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) {
157 if (JvmtiExport::can_force_early_return()) {
158 Label L;
159 Register tmp = java_thread;
160 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset()));
161 testptr(tmp, tmp);
162 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit;
164 // Initiate earlyret handling only if it is not already being processed.
165 // If the flag has the earlyret_processing bit set, it means that this code
166 // is called *during* earlyret handling - we don't want to reenter.
167 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset()));
168 cmpl(tmp, JvmtiThreadState::earlyret_pending);
169 jcc(Assembler::notEqual, L);
171 // Call Interpreter::remove_activation_early_entry() to get the address of the
172 // same-named entrypoint in the generated interpreter code.
173 get_thread(java_thread);
174 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset()));
175 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset()));
176 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1);
177 jmp(rax);
178 bind(L);
179 get_thread(java_thread);
180 }
181 }
184 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) {
185 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode");
186 movl(reg, Address(rsi, bcp_offset));
187 bswapl(reg);
188 shrl(reg, 16);
189 }
192 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index, int bcp_offset) {
193 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
194 assert(cache != index, "must use different registers");
195 load_unsigned_short(index, Address(rsi, bcp_offset));
196 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
197 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
198 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
199 }
202 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp, int bcp_offset) {
203 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
204 assert(cache != tmp, "must use different register");
205 load_unsigned_short(tmp, Address(rsi, bcp_offset));
206 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
207 // convert from field index to ConstantPoolCacheEntry index
208 // and from word offset to byte offset
209 shll(tmp, 2 + LogBytesPerWord);
210 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
211 // skip past the header
212 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset()));
213 addptr(cache, tmp); // construct pointer to cache entry
214 }
217 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
218 // a subtype of super_klass. EAX holds the super_klass. Blows ECX.
219 // Resets EDI to locals. Register sub_klass cannot be any of the above.
220 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) {
221 assert( Rsub_klass != rax, "rax, holds superklass" );
222 assert( Rsub_klass != rcx, "used as a temp" );
223 assert( Rsub_klass != rdi, "used as a temp, restored from locals" );
225 // Profile the not-null value's klass.
226 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi
228 // Do the check.
229 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx
231 // Profile the failure of the check.
232 profile_typecheck_failed(rcx); // blows rcx
233 }
235 void InterpreterMacroAssembler::f2ieee() {
236 if (IEEEPrecision) {
237 fstp_s(Address(rsp, 0));
238 fld_s(Address(rsp, 0));
239 }
240 }
243 void InterpreterMacroAssembler::d2ieee() {
244 if (IEEEPrecision) {
245 fstp_d(Address(rsp, 0));
246 fld_d(Address(rsp, 0));
247 }
248 }
250 // Java Expression Stack
252 #ifdef ASSERT
253 void InterpreterMacroAssembler::verify_stack_tag(frame::Tag t) {
254 if (TaggedStackInterpreter) {
255 Label okay;
256 cmpptr(Address(rsp, wordSize), (int32_t)t);
257 jcc(Assembler::equal, okay);
258 // Also compare if the stack value is zero, then the tag might
259 // not have been set coming from deopt.
260 cmpptr(Address(rsp, 0), 0);
261 jcc(Assembler::equal, okay);
262 stop("Java Expression stack tag value is bad");
263 bind(okay);
264 }
265 }
266 #endif // ASSERT
268 void InterpreterMacroAssembler::pop_ptr(Register r) {
269 debug_only(verify_stack_tag(frame::TagReference));
270 pop(r);
271 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
272 }
274 void InterpreterMacroAssembler::pop_ptr(Register r, Register tag) {
275 pop(r);
276 // Tag may not be reference for jsr, can be returnAddress
277 if (TaggedStackInterpreter) pop(tag);
278 }
280 void InterpreterMacroAssembler::pop_i(Register r) {
281 debug_only(verify_stack_tag(frame::TagValue));
282 pop(r);
283 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
284 }
286 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) {
287 debug_only(verify_stack_tag(frame::TagValue));
288 pop(lo);
289 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
290 debug_only(verify_stack_tag(frame::TagValue));
291 pop(hi);
292 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
293 }
295 void InterpreterMacroAssembler::pop_f() {
296 debug_only(verify_stack_tag(frame::TagValue));
297 fld_s(Address(rsp, 0));
298 addptr(rsp, 1 * wordSize);
299 if (TaggedStackInterpreter) addptr(rsp, 1 * wordSize);
300 }
302 void InterpreterMacroAssembler::pop_d() {
303 // Write double to stack contiguously and load into ST0
304 pop_dtos_to_rsp();
305 fld_d(Address(rsp, 0));
306 addptr(rsp, 2 * wordSize);
307 }
310 // Pop the top of the java expression stack to execution stack (which
311 // happens to be the same place).
312 void InterpreterMacroAssembler::pop_dtos_to_rsp() {
313 if (TaggedStackInterpreter) {
314 // Pop double value into scratch registers
315 debug_only(verify_stack_tag(frame::TagValue));
316 pop(rax);
317 addptr(rsp, 1* wordSize);
318 debug_only(verify_stack_tag(frame::TagValue));
319 pop(rdx);
320 addptr(rsp, 1* wordSize);
321 push(rdx);
322 push(rax);
323 }
324 }
326 void InterpreterMacroAssembler::pop_ftos_to_rsp() {
327 if (TaggedStackInterpreter) {
328 debug_only(verify_stack_tag(frame::TagValue));
329 pop(rax);
330 addptr(rsp, 1 * wordSize);
331 push(rax); // ftos is at rsp
332 }
333 }
335 void InterpreterMacroAssembler::pop(TosState state) {
336 switch (state) {
337 case atos: pop_ptr(rax); break;
338 case btos: // fall through
339 case ctos: // fall through
340 case stos: // fall through
341 case itos: pop_i(rax); break;
342 case ltos: pop_l(rax, rdx); break;
343 case ftos: pop_f(); break;
344 case dtos: pop_d(); break;
345 case vtos: /* nothing to do */ break;
346 default : ShouldNotReachHere();
347 }
348 verify_oop(rax, state);
349 }
351 void InterpreterMacroAssembler::push_ptr(Register r) {
352 if (TaggedStackInterpreter) push(frame::TagReference);
353 push(r);
354 }
356 void InterpreterMacroAssembler::push_ptr(Register r, Register tag) {
357 if (TaggedStackInterpreter) push(tag); // tag first
358 push(r);
359 }
361 void InterpreterMacroAssembler::push_i(Register r) {
362 if (TaggedStackInterpreter) push(frame::TagValue);
363 push(r);
364 }
366 void InterpreterMacroAssembler::push_l(Register lo, Register hi) {
367 if (TaggedStackInterpreter) push(frame::TagValue);
368 push(hi);
369 if (TaggedStackInterpreter) push(frame::TagValue);
370 push(lo);
371 }
373 void InterpreterMacroAssembler::push_f() {
374 if (TaggedStackInterpreter) push(frame::TagValue);
375 // Do not schedule for no AGI! Never write beyond rsp!
376 subptr(rsp, 1 * wordSize);
377 fstp_s(Address(rsp, 0));
378 }
380 void InterpreterMacroAssembler::push_d(Register r) {
381 if (TaggedStackInterpreter) {
382 // Double values are stored as:
383 // tag
384 // high
385 // tag
386 // low
387 push(frame::TagValue);
388 subptr(rsp, 3 * wordSize);
389 fstp_d(Address(rsp, 0));
390 // move high word up to slot n-1
391 movl(r, Address(rsp, 1*wordSize));
392 movl(Address(rsp, 2*wordSize), r);
393 // move tag
394 movl(Address(rsp, 1*wordSize), frame::TagValue);
395 } else {
396 // Do not schedule for no AGI! Never write beyond rsp!
397 subptr(rsp, 2 * wordSize);
398 fstp_d(Address(rsp, 0));
399 }
400 }
403 void InterpreterMacroAssembler::push(TosState state) {
404 verify_oop(rax, state);
405 switch (state) {
406 case atos: push_ptr(rax); break;
407 case btos: // fall through
408 case ctos: // fall through
409 case stos: // fall through
410 case itos: push_i(rax); break;
411 case ltos: push_l(rax, rdx); break;
412 case ftos: push_f(); break;
413 case dtos: push_d(rax); break;
414 case vtos: /* nothing to do */ break;
415 default : ShouldNotReachHere();
416 }
417 }
420 // Tagged stack helpers for swap and dup
421 void InterpreterMacroAssembler::load_ptr_and_tag(int n, Register val,
422 Register tag) {
423 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n)));
424 if (TaggedStackInterpreter) {
425 movptr(tag, Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)));
426 }
427 }
429 void InterpreterMacroAssembler::store_ptr_and_tag(int n, Register val,
430 Register tag) {
431 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val);
432 if (TaggedStackInterpreter) {
433 movptr(Address(rsp, Interpreter::expr_tag_offset_in_bytes(n)), tag);
434 }
435 }
438 // Tagged local support
439 void InterpreterMacroAssembler::tag_local(frame::Tag tag, int n) {
440 if (TaggedStackInterpreter) {
441 if (tag == frame::TagCategory2) {
442 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)frame::TagValue);
443 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)frame::TagValue);
444 } else {
445 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)tag);
446 }
447 }
448 }
450 void InterpreterMacroAssembler::tag_local(frame::Tag tag, Register idx) {
451 if (TaggedStackInterpreter) {
452 if (tag == frame::TagCategory2) {
453 movptr(Address(rdi, idx, Interpreter::stackElementScale(),
454 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)frame::TagValue);
455 movptr(Address(rdi, idx, Interpreter::stackElementScale(),
456 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)frame::TagValue);
457 } else {
458 movptr(Address(rdi, idx, Interpreter::stackElementScale(),
459 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)tag);
460 }
461 }
462 }
464 void InterpreterMacroAssembler::tag_local(Register tag, Register idx) {
465 if (TaggedStackInterpreter) {
466 // can only be TagValue or TagReference
467 movptr(Address(rdi, idx, Interpreter::stackElementScale(),
468 Interpreter::local_tag_offset_in_bytes(0)), tag);
469 }
470 }
473 void InterpreterMacroAssembler::tag_local(Register tag, int n) {
474 if (TaggedStackInterpreter) {
475 // can only be TagValue or TagReference
476 movptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), tag);
477 }
478 }
480 #ifdef ASSERT
481 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, int n) {
482 if (TaggedStackInterpreter) {
483 frame::Tag t = tag;
484 if (tag == frame::TagCategory2) {
485 Label nbl;
486 t = frame::TagValue; // change to what is stored in locals
487 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n+1)), (int32_t)t);
488 jcc(Assembler::equal, nbl);
489 stop("Local tag is bad for long/double");
490 bind(nbl);
491 }
492 Label notBad;
493 cmpptr(Address(rdi, Interpreter::local_tag_offset_in_bytes(n)), (int32_t)t);
494 jcc(Assembler::equal, notBad);
495 // Also compare if the local value is zero, then the tag might
496 // not have been set coming from deopt.
497 cmpptr(Address(rdi, Interpreter::local_offset_in_bytes(n)), 0);
498 jcc(Assembler::equal, notBad);
499 stop("Local tag is bad");
500 bind(notBad);
501 }
502 }
504 void InterpreterMacroAssembler::verify_local_tag(frame::Tag tag, Register idx) {
505 if (TaggedStackInterpreter) {
506 frame::Tag t = tag;
507 if (tag == frame::TagCategory2) {
508 Label nbl;
509 t = frame::TagValue; // change to what is stored in locals
510 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(),
511 Interpreter::local_tag_offset_in_bytes(1)), (int32_t)t);
512 jcc(Assembler::equal, nbl);
513 stop("Local tag is bad for long/double");
514 bind(nbl);
515 }
516 Label notBad;
517 cmpl(Address(rdi, idx, Interpreter::stackElementScale(),
518 Interpreter::local_tag_offset_in_bytes(0)), (int32_t)t);
519 jcc(Assembler::equal, notBad);
520 // Also compare if the local value is zero, then the tag might
521 // not have been set coming from deopt.
522 cmpptr(Address(rdi, idx, Interpreter::stackElementScale(),
523 Interpreter::local_offset_in_bytes(0)), 0);
524 jcc(Assembler::equal, notBad);
525 stop("Local tag is bad");
526 bind(notBad);
528 }
529 }
530 #endif // ASSERT
532 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) {
533 MacroAssembler::call_VM_leaf_base(entry_point, 0);
534 }
537 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) {
538 push(arg_1);
539 MacroAssembler::call_VM_leaf_base(entry_point, 1);
540 }
543 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) {
544 push(arg_2);
545 push(arg_1);
546 MacroAssembler::call_VM_leaf_base(entry_point, 2);
547 }
550 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) {
551 push(arg_3);
552 push(arg_2);
553 push(arg_1);
554 MacroAssembler::call_VM_leaf_base(entry_point, 3);
555 }
558 // Jump to from_interpreted entry of a call unless single stepping is possible
559 // in this thread in which case we must call the i2i entry
560 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) {
561 // set sender sp
562 lea(rsi, Address(rsp, wordSize));
563 // record last_sp
564 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi);
566 if (JvmtiExport::can_post_interpreter_events()) {
567 Label run_compiled_code;
568 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
569 // compiled code in threads for which the event is enabled. Check here for
570 // interp_only_mode if these events CAN be enabled.
571 get_thread(temp);
572 // interp_only is an int, on little endian it is sufficient to test the byte only
573 // Is a cmpl faster (ce
574 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0);
575 jcc(Assembler::zero, run_compiled_code);
576 jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
577 bind(run_compiled_code);
578 }
580 jmp(Address(method, methodOopDesc::from_interpreted_offset()));
582 }
585 // The following two routines provide a hook so that an implementation
586 // can schedule the dispatch in two parts. Intel does not do this.
587 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) {
588 // Nothing Intel-specific to be done here.
589 }
591 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) {
592 dispatch_next(state, step);
593 }
595 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table,
596 bool verifyoop) {
597 verify_FPU(1, state);
598 if (VerifyActivationFrameSize) {
599 Label L;
600 mov(rcx, rbp);
601 subptr(rcx, rsp);
602 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize;
603 cmpptr(rcx, min_frame_size);
604 jcc(Assembler::greaterEqual, L);
605 stop("broken stack frame");
606 bind(L);
607 }
608 if (verifyoop) verify_oop(rax, state);
609 Address index(noreg, rbx, Address::times_ptr);
610 ExternalAddress tbl((address)table);
611 ArrayAddress dispatch(tbl, index);
612 jump(dispatch);
613 }
616 void InterpreterMacroAssembler::dispatch_only(TosState state) {
617 dispatch_base(state, Interpreter::dispatch_table(state));
618 }
621 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) {
622 dispatch_base(state, Interpreter::normal_table(state));
623 }
625 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) {
626 dispatch_base(state, Interpreter::normal_table(state), false);
627 }
630 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) {
631 // load next bytecode (load before advancing rsi to prevent AGI)
632 load_unsigned_byte(rbx, Address(rsi, step));
633 // advance rsi
634 increment(rsi, step);
635 dispatch_base(state, Interpreter::dispatch_table(state));
636 }
639 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
640 // load current bytecode
641 load_unsigned_byte(rbx, Address(rsi, 0));
642 dispatch_base(state, table);
643 }
645 // remove activation
646 //
647 // Unlock the receiver if this is a synchronized method.
648 // Unlock any Java monitors from syncronized blocks.
649 // Remove the activation from the stack.
650 //
651 // If there are locked Java monitors
652 // If throw_monitor_exception
653 // throws IllegalMonitorStateException
654 // Else if install_monitor_exception
655 // installs IllegalMonitorStateException
656 // Else
657 // no error processing
658 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr,
659 bool throw_monitor_exception,
660 bool install_monitor_exception,
661 bool notify_jvmdi) {
662 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result
663 // check if synchronized method
664 Label unlocked, unlock, no_unlock;
666 get_thread(rcx);
667 const Address do_not_unlock_if_synchronized(rcx,
668 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
670 movbool(rbx, do_not_unlock_if_synchronized);
671 mov(rdi,rbx);
672 movbool(do_not_unlock_if_synchronized, false); // reset the flag
674 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags
675 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset()));
677 testl(rcx, JVM_ACC_SYNCHRONIZED);
678 jcc(Assembler::zero, unlocked);
680 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
681 // is set.
682 mov(rcx,rdi);
683 testbool(rcx);
684 jcc(Assembler::notZero, no_unlock);
686 // unlock monitor
687 push(state); // save result
689 // BasicObjectLock will be first in list, since this is a synchronized method. However, need
690 // to check that the object has not been unlocked by an explicit monitorexit bytecode.
691 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock));
692 lea (rdx, monitor); // address of first monitor
694 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes()));
695 testptr(rax, rax);
696 jcc (Assembler::notZero, unlock);
698 pop(state);
699 if (throw_monitor_exception) {
700 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
702 // Entry already unlocked, need to throw exception
703 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
704 should_not_reach_here();
705 } else {
706 // Monitor already unlocked during a stack unroll.
707 // If requested, install an illegal_monitor_state_exception.
708 // Continue with stack unrolling.
709 if (install_monitor_exception) {
710 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
711 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
712 }
713 jmp(unlocked);
714 }
716 bind(unlock);
717 unlock_object(rdx);
718 pop(state);
720 // Check that for block-structured locking (i.e., that all locked objects has been unlocked)
721 bind(unlocked);
723 // rax, rdx: Might contain return value
725 // Check that all monitors are unlocked
726 {
727 Label loop, exception, entry, restart;
728 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
729 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
730 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
732 bind(restart);
733 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry
734 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
735 jmp(entry);
737 // Entry already locked, need to throw exception
738 bind(exception);
740 if (throw_monitor_exception) {
741 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
743 // Throw exception
744 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
745 should_not_reach_here();
746 } else {
747 // Stack unrolling. Unlock object and install illegal_monitor_exception
748 // Unlock does not block, so don't have to worry about the frame
750 push(state);
751 mov(rdx, rcx);
752 unlock_object(rdx);
753 pop(state);
755 if (install_monitor_exception) {
756 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
757 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
758 }
760 jmp(restart);
761 }
763 bind(loop);
764 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used
765 jcc(Assembler::notEqual, exception);
767 addptr(rcx, entry_size); // otherwise advance to next entry
768 bind(entry);
769 cmpptr(rcx, rbx); // check if bottom reached
770 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
771 }
773 bind(no_unlock);
775 // jvmti support
776 if (notify_jvmdi) {
777 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA
778 } else {
779 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA
780 }
782 // remove activation
783 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
784 leave(); // remove frame anchor
785 pop(ret_addr); // get return address
786 mov(rsp, rbx); // set sp to sender sp
787 if (UseSSE) {
788 // float and double are returned in xmm register in SSE-mode
789 if (state == ftos && UseSSE >= 1) {
790 subptr(rsp, wordSize);
791 fstp_s(Address(rsp, 0));
792 movflt(xmm0, Address(rsp, 0));
793 addptr(rsp, wordSize);
794 } else if (state == dtos && UseSSE >= 2) {
795 subptr(rsp, 2*wordSize);
796 fstp_d(Address(rsp, 0));
797 movdbl(xmm0, Address(rsp, 0));
798 addptr(rsp, 2*wordSize);
799 }
800 }
801 }
803 #endif /* !CC_INTERP */
806 // Lock object
807 //
808 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must
809 // be initialized with object to lock
810 void InterpreterMacroAssembler::lock_object(Register lock_reg) {
811 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
813 if (UseHeavyMonitors) {
814 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
815 } else {
817 Label done;
819 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
820 const Register obj_reg = rcx; // Will contain the oop
822 const int obj_offset = BasicObjectLock::obj_offset_in_bytes();
823 const int lock_offset = BasicObjectLock::lock_offset_in_bytes ();
824 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes();
826 Label slow_case;
828 // Load object pointer into obj_reg %rcx
829 movptr(obj_reg, Address(lock_reg, obj_offset));
831 if (UseBiasedLocking) {
832 // Note: we use noreg for the temporary register since it's hard
833 // to come up with a free register on all incoming code paths
834 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case);
835 }
837 // Load immediate 1 into swap_reg %rax,
838 movptr(swap_reg, (int32_t)1);
840 // Load (object->mark() | 1) into swap_reg %rax,
841 orptr(swap_reg, Address(obj_reg, 0));
843 // Save (object->mark() | 1) into BasicLock's displaced header
844 movptr(Address(lock_reg, mark_offset), swap_reg);
846 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock");
847 if (os::is_MP()) {
848 lock();
849 }
850 cmpxchgptr(lock_reg, Address(obj_reg, 0));
851 if (PrintBiasedLockingStatistics) {
852 cond_inc32(Assembler::zero,
853 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
854 }
855 jcc(Assembler::zero, done);
857 // Test if the oopMark is an obvious stack pointer, i.e.,
858 // 1) (mark & 3) == 0, and
859 // 2) rsp <= mark < mark + os::pagesize()
860 //
861 // These 3 tests can be done by evaluating the following
862 // expression: ((mark - rsp) & (3 - os::vm_page_size())),
863 // assuming both stack pointer and pagesize have their
864 // least significant 2 bits clear.
865 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg
866 subptr(swap_reg, rsp);
867 andptr(swap_reg, 3 - os::vm_page_size());
869 // Save the test result, for recursive case, the result is zero
870 movptr(Address(lock_reg, mark_offset), swap_reg);
872 if (PrintBiasedLockingStatistics) {
873 cond_inc32(Assembler::zero,
874 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
875 }
876 jcc(Assembler::zero, done);
878 bind(slow_case);
880 // Call the runtime routine for slow case
881 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
883 bind(done);
884 }
885 }
888 // Unlocks an object. Used in monitorexit bytecode and remove_activation.
889 //
890 // Argument: rdx : Points to BasicObjectLock structure for lock
891 // Throw an IllegalMonitorException if object is not locked by current thread
892 //
893 // Uses: rax, rbx, rcx, rdx
894 void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
895 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
897 if (UseHeavyMonitors) {
898 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
899 } else {
900 Label done;
902 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
903 const Register header_reg = rbx; // Will contain the old oopMark
904 const Register obj_reg = rcx; // Will contain the oop
906 save_bcp(); // Save in case of exception
908 // Convert from BasicObjectLock structure to object and BasicLock structure
909 // Store the BasicLock address into %rax,
910 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes()));
912 // Load oop into obj_reg(%rcx)
913 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ()));
915 // Free entry
916 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD);
918 if (UseBiasedLocking) {
919 biased_locking_exit(obj_reg, header_reg, done);
920 }
922 // Load the old header from BasicLock structure
923 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes()));
925 // Test for recursion
926 testptr(header_reg, header_reg);
928 // zero for recursive case
929 jcc(Assembler::zero, done);
931 // Atomic swap back the old header
932 if (os::is_MP()) lock();
933 cmpxchgptr(header_reg, Address(obj_reg, 0));
935 // zero for recursive case
936 jcc(Assembler::zero, done);
938 // Call the runtime routine for slow case.
939 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj
940 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
942 bind(done);
944 restore_bcp();
945 }
946 }
949 #ifndef CC_INTERP
951 // Test ImethodDataPtr. If it is null, continue at the specified label
952 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) {
953 assert(ProfileInterpreter, "must be profiling interpreter");
954 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
955 testptr(mdp, mdp);
956 jcc(Assembler::zero, zero_continue);
957 }
960 // Set the method data pointer for the current bcp.
961 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
962 assert(ProfileInterpreter, "must be profiling interpreter");
963 Label zero_continue;
964 push(rax);
965 push(rbx);
967 get_method(rbx);
968 // Test MDO to avoid the call if it is NULL.
969 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
970 testptr(rax, rax);
971 jcc(Assembler::zero, zero_continue);
973 // rbx,: method
974 // rsi: bcp
975 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi);
976 // rax,: mdi
978 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
979 testptr(rbx, rbx);
980 jcc(Assembler::zero, zero_continue);
981 addptr(rbx, in_bytes(methodDataOopDesc::data_offset()));
982 addptr(rbx, rax);
983 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx);
985 bind(zero_continue);
986 pop(rbx);
987 pop(rax);
988 }
990 void InterpreterMacroAssembler::verify_method_data_pointer() {
991 assert(ProfileInterpreter, "must be profiling interpreter");
992 #ifdef ASSERT
993 Label verify_continue;
994 push(rax);
995 push(rbx);
996 push(rcx);
997 push(rdx);
998 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue
999 get_method(rbx);
1001 // If the mdp is valid, it will point to a DataLayout header which is
1002 // consistent with the bcp. The converse is highly probable also.
1003 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset())));
1004 addptr(rdx, Address(rbx, methodOopDesc::const_offset()));
1005 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset()));
1006 cmpptr(rdx, rsi);
1007 jcc(Assembler::equal, verify_continue);
1008 // rbx,: method
1009 // rsi: bcp
1010 // rcx: mdp
1011 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx);
1012 bind(verify_continue);
1013 pop(rdx);
1014 pop(rcx);
1015 pop(rbx);
1016 pop(rax);
1017 #endif // ASSERT
1018 }
1021 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) {
1022 // %%% this seems to be used to store counter data which is surely 32bits
1023 // however 64bit side stores 64 bits which seems wrong
1024 assert(ProfileInterpreter, "must be profiling interpreter");
1025 Address data(mdp_in, constant);
1026 movptr(data, value);
1027 }
1030 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
1031 int constant,
1032 bool decrement) {
1033 // Counter address
1034 Address data(mdp_in, constant);
1036 increment_mdp_data_at(data, decrement);
1037 }
1040 void InterpreterMacroAssembler::increment_mdp_data_at(Address data,
1041 bool decrement) {
1043 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
1044 assert(ProfileInterpreter, "must be profiling interpreter");
1046 // %%% 64bit treats this as 64 bit which seems unlikely
1047 if (decrement) {
1048 // Decrement the register. Set condition codes.
1049 addl(data, -DataLayout::counter_increment);
1050 // If the decrement causes the counter to overflow, stay negative
1051 Label L;
1052 jcc(Assembler::negative, L);
1053 addl(data, DataLayout::counter_increment);
1054 bind(L);
1055 } else {
1056 assert(DataLayout::counter_increment == 1,
1057 "flow-free idiom only works with 1");
1058 // Increment the register. Set carry flag.
1059 addl(data, DataLayout::counter_increment);
1060 // If the increment causes the counter to overflow, pull back by 1.
1061 sbbl(data, 0);
1062 }
1063 }
1066 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
1067 Register reg,
1068 int constant,
1069 bool decrement) {
1070 Address data(mdp_in, reg, Address::times_1, constant);
1072 increment_mdp_data_at(data, decrement);
1073 }
1076 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) {
1077 assert(ProfileInterpreter, "must be profiling interpreter");
1078 int header_offset = in_bytes(DataLayout::header_offset());
1079 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant);
1080 // Set the flag
1081 orl(Address(mdp_in, header_offset), header_bits);
1082 }
1086 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
1087 int offset,
1088 Register value,
1089 Register test_value_out,
1090 Label& not_equal_continue) {
1091 assert(ProfileInterpreter, "must be profiling interpreter");
1092 if (test_value_out == noreg) {
1093 cmpptr(value, Address(mdp_in, offset));
1094 } else {
1095 // Put the test value into a register, so caller can use it:
1096 movptr(test_value_out, Address(mdp_in, offset));
1097 cmpptr(test_value_out, value);
1098 }
1099 jcc(Assembler::notEqual, not_equal_continue);
1100 }
1103 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) {
1104 assert(ProfileInterpreter, "must be profiling interpreter");
1105 Address disp_address(mdp_in, offset_of_disp);
1106 addptr(mdp_in,disp_address);
1107 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
1108 }
1111 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) {
1112 assert(ProfileInterpreter, "must be profiling interpreter");
1113 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
1114 addptr(mdp_in, disp_address);
1115 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
1116 }
1119 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) {
1120 assert(ProfileInterpreter, "must be profiling interpreter");
1121 addptr(mdp_in, constant);
1122 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
1123 }
1126 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) {
1127 assert(ProfileInterpreter, "must be profiling interpreter");
1128 push(return_bci); // save/restore across call_VM
1129 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci);
1130 pop(return_bci);
1131 }
1134 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) {
1135 if (ProfileInterpreter) {
1136 Label profile_continue;
1138 // If no method data exists, go to profile_continue.
1139 // Otherwise, assign to mdp
1140 test_method_data_pointer(mdp, profile_continue);
1142 // We are taking a branch. Increment the taken count.
1143 // We inline increment_mdp_data_at to return bumped_count in a register
1144 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
1145 Address data(mdp, in_bytes(JumpData::taken_offset()));
1147 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit
1148 movl(bumped_count,data);
1149 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
1150 addl(bumped_count, DataLayout::counter_increment);
1151 sbbl(bumped_count, 0);
1152 movl(data,bumped_count); // Store back out
1154 // The method data pointer needs to be updated to reflect the new target.
1155 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
1156 bind (profile_continue);
1157 }
1158 }
1161 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) {
1162 if (ProfileInterpreter) {
1163 Label profile_continue;
1165 // If no method data exists, go to profile_continue.
1166 test_method_data_pointer(mdp, profile_continue);
1168 // We are taking a branch. Increment the not taken count.
1169 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()));
1171 // The method data pointer needs to be updated to correspond to the next bytecode
1172 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size()));
1173 bind (profile_continue);
1174 }
1175 }
1178 void InterpreterMacroAssembler::profile_call(Register mdp) {
1179 if (ProfileInterpreter) {
1180 Label profile_continue;
1182 // If no method data exists, go to profile_continue.
1183 test_method_data_pointer(mdp, profile_continue);
1185 // We are making a call. Increment the count.
1186 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1188 // The method data pointer needs to be updated to reflect the new target.
1189 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size()));
1190 bind (profile_continue);
1191 }
1192 }
1195 void InterpreterMacroAssembler::profile_final_call(Register mdp) {
1196 if (ProfileInterpreter) {
1197 Label profile_continue;
1199 // If no method data exists, go to profile_continue.
1200 test_method_data_pointer(mdp, profile_continue);
1202 // We are making a call. Increment the count.
1203 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1205 // The method data pointer needs to be updated to reflect the new target.
1206 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size()));
1207 bind (profile_continue);
1208 }
1209 }
1212 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp, Register reg2) {
1213 if (ProfileInterpreter) {
1214 Label profile_continue;
1216 // If no method data exists, go to profile_continue.
1217 test_method_data_pointer(mdp, profile_continue);
1219 // We are making a call. Increment the count.
1220 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1222 // Record the receiver type.
1223 record_klass_in_profile(receiver, mdp, reg2);
1225 // The method data pointer needs to be updated to reflect the new target.
1226 update_mdp_by_constant(mdp,
1227 in_bytes(VirtualCallData::
1228 virtual_call_data_size()));
1229 bind(profile_continue);
1230 }
1231 }
1234 void InterpreterMacroAssembler::record_klass_in_profile_helper(
1235 Register receiver, Register mdp,
1236 Register reg2,
1237 int start_row, Label& done) {
1238 int last_row = VirtualCallData::row_limit() - 1;
1239 assert(start_row <= last_row, "must be work left to do");
1240 // Test this row for both the receiver and for null.
1241 // Take any of three different outcomes:
1242 // 1. found receiver => increment count and goto done
1243 // 2. found null => keep looking for case 1, maybe allocate this cell
1244 // 3. found something else => keep looking for cases 1 and 2
1245 // Case 3 is handled by a recursive call.
1246 for (int row = start_row; row <= last_row; row++) {
1247 Label next_test;
1248 bool test_for_null_also = (row == start_row);
1250 // See if the receiver is receiver[n].
1251 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row));
1252 test_mdp_data_at(mdp, recvr_offset, receiver,
1253 (test_for_null_also ? reg2 : noreg),
1254 next_test);
1255 // (Reg2 now contains the receiver from the CallData.)
1257 // The receiver is receiver[n]. Increment count[n].
1258 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row));
1259 increment_mdp_data_at(mdp, count_offset);
1260 jmp(done);
1261 bind(next_test);
1263 if (row == start_row) {
1264 // Failed the equality check on receiver[n]... Test for null.
1265 testptr(reg2, reg2);
1266 if (start_row == last_row) {
1267 // The only thing left to do is handle the null case.
1268 jcc(Assembler::notZero, done);
1269 break;
1270 }
1271 // Since null is rare, make it be the branch-taken case.
1272 Label found_null;
1273 jcc(Assembler::zero, found_null);
1275 // Put all the "Case 3" tests here.
1276 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done);
1278 // Found a null. Keep searching for a matching receiver,
1279 // but remember that this is an empty (unused) slot.
1280 bind(found_null);
1281 }
1282 }
1284 // In the fall-through case, we found no matching receiver, but we
1285 // observed the receiver[start_row] is NULL.
1287 // Fill in the receiver field and increment the count.
1288 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row));
1289 set_mdp_data_at(mdp, recvr_offset, receiver);
1290 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row));
1291 movptr(reg2, (int32_t)DataLayout::counter_increment);
1292 set_mdp_data_at(mdp, count_offset, reg2);
1293 jmp(done);
1294 }
1296 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
1297 Register mdp,
1298 Register reg2) {
1299 assert(ProfileInterpreter, "must be profiling");
1300 Label done;
1302 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done);
1304 bind (done);
1305 }
1307 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) {
1308 if (ProfileInterpreter) {
1309 Label profile_continue;
1310 uint row;
1312 // If no method data exists, go to profile_continue.
1313 test_method_data_pointer(mdp, profile_continue);
1315 // Update the total ret count.
1316 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1318 for (row = 0; row < RetData::row_limit(); row++) {
1319 Label next_test;
1321 // See if return_bci is equal to bci[n]:
1322 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci,
1323 noreg, next_test);
1325 // return_bci is equal to bci[n]. Increment the count.
1326 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));
1328 // The method data pointer needs to be updated to reflect the new target.
1329 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row)));
1330 jmp(profile_continue);
1331 bind(next_test);
1332 }
1334 update_mdp_for_ret(return_bci);
1336 bind (profile_continue);
1337 }
1338 }
1341 void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
1342 if (ProfileInterpreter) {
1343 Label profile_continue;
1345 // If no method data exists, go to profile_continue.
1346 test_method_data_pointer(mdp, profile_continue);
1348 // The method data pointer needs to be updated.
1349 int mdp_delta = in_bytes(BitData::bit_data_size());
1350 if (TypeProfileCasts) {
1351 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1352 }
1353 update_mdp_by_constant(mdp, mdp_delta);
1355 bind (profile_continue);
1356 }
1357 }
1360 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) {
1361 if (ProfileInterpreter && TypeProfileCasts) {
1362 Label profile_continue;
1364 // If no method data exists, go to profile_continue.
1365 test_method_data_pointer(mdp, profile_continue);
1367 int count_offset = in_bytes(CounterData::count_offset());
1368 // Back up the address, since we have already bumped the mdp.
1369 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size());
1371 // *Decrement* the counter. We expect to see zero or small negatives.
1372 increment_mdp_data_at(mdp, count_offset, true);
1374 bind (profile_continue);
1375 }
1376 }
1379 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2)
1380 {
1381 if (ProfileInterpreter) {
1382 Label profile_continue;
1384 // If no method data exists, go to profile_continue.
1385 test_method_data_pointer(mdp, profile_continue);
1387 // The method data pointer needs to be updated.
1388 int mdp_delta = in_bytes(BitData::bit_data_size());
1389 if (TypeProfileCasts) {
1390 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1392 // Record the object type.
1393 record_klass_in_profile(klass, mdp, reg2);
1394 assert(reg2 == rdi, "we know how to fix this blown reg");
1395 restore_locals(); // Restore EDI
1396 }
1397 update_mdp_by_constant(mdp, mdp_delta);
1399 bind(profile_continue);
1400 }
1401 }
1404 void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
1405 if (ProfileInterpreter) {
1406 Label profile_continue;
1408 // If no method data exists, go to profile_continue.
1409 test_method_data_pointer(mdp, profile_continue);
1411 // Update the default case count
1412 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset()));
1414 // The method data pointer needs to be updated.
1415 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset()));
1417 bind (profile_continue);
1418 }
1419 }
1422 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) {
1423 if (ProfileInterpreter) {
1424 Label profile_continue;
1426 // If no method data exists, go to profile_continue.
1427 test_method_data_pointer(mdp, profile_continue);
1429 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes()
1430 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size()));
1431 // index is positive and so should have correct value if this code were
1432 // used on 64bits
1433 imulptr(index, reg2);
1434 addptr(index, in_bytes(MultiBranchData::case_array_offset()));
1436 // Update the case count
1437 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset()));
1439 // The method data pointer needs to be updated.
1440 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset()));
1442 bind (profile_continue);
1443 }
1444 }
1446 #endif // !CC_INTERP
1450 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) {
1451 if (state == atos) MacroAssembler::verify_oop(reg);
1452 }
1455 #ifndef CC_INTERP
1456 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) {
1457 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth);
1458 }
1460 #endif /* CC_INTERP */
1463 void InterpreterMacroAssembler::notify_method_entry() {
1464 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1465 // track stack depth. If it is possible to enter interp_only_mode we add
1466 // the code to check if the event should be sent.
1467 if (JvmtiExport::can_post_interpreter_events()) {
1468 Label L;
1469 get_thread(rcx);
1470 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1471 testl(rcx,rcx);
1472 jcc(Assembler::zero, L);
1473 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry));
1474 bind(L);
1475 }
1477 {
1478 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1479 get_thread(rcx);
1480 get_method(rbx);
1481 call_VM_leaf(
1482 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx);
1483 }
1485 // RedefineClasses() tracing support for obsolete method entry
1486 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) {
1487 get_thread(rcx);
1488 get_method(rbx);
1489 call_VM_leaf(
1490 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
1491 rcx, rbx);
1492 }
1493 }
1496 void InterpreterMacroAssembler::notify_method_exit(
1497 TosState state, NotifyMethodExitMode mode) {
1498 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1499 // track stack depth. If it is possible to enter interp_only_mode we add
1500 // the code to check if the event should be sent.
1501 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) {
1502 Label L;
1503 // Note: frame::interpreter_frame_result has a dependency on how the
1504 // method result is saved across the call to post_method_exit. If this
1505 // is changed then the interpreter_frame_result implementation will
1506 // need to be updated too.
1508 // For c++ interpreter the result is always stored at a known location in the frame
1509 // template interpreter will leave it on the top of the stack.
1510 NOT_CC_INTERP(push(state);)
1511 get_thread(rcx);
1512 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1513 testl(rcx,rcx);
1514 jcc(Assembler::zero, L);
1515 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
1516 bind(L);
1517 NOT_CC_INTERP(pop(state);)
1518 }
1520 {
1521 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1522 NOT_CC_INTERP(push(state));
1523 get_thread(rbx);
1524 get_method(rcx);
1525 call_VM_leaf(
1526 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
1527 rbx, rcx);
1528 NOT_CC_INTERP(pop(state));
1529 }
1530 }