Thu, 27 May 2010 19:08:38 -0700
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * 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_index_at_bcp(Register reg, int bcp_offset, bool giant_index) {
193 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
194 if (!giant_index) {
195 load_unsigned_short(reg, Address(rsi, bcp_offset));
196 } else {
197 assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic");
198 movl(reg, Address(rsi, bcp_offset));
199 // Check if the secondary index definition is still ~x, otherwise
200 // we have to change the following assembler code to calculate the
201 // plain index.
202 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
203 notl(reg); // convert to plain index
204 }
205 }
208 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index,
209 int bcp_offset, bool giant_index) {
210 assert(cache != index, "must use different registers");
211 get_cache_index_at_bcp(index, bcp_offset, giant_index);
212 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
213 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
214 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
215 }
218 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
219 int bcp_offset, bool giant_index) {
220 assert(cache != tmp, "must use different register");
221 get_cache_index_at_bcp(tmp, bcp_offset, giant_index);
222 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
223 // convert from field index to ConstantPoolCacheEntry index
224 // and from word offset to byte offset
225 shll(tmp, 2 + LogBytesPerWord);
226 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
227 // skip past the header
228 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset()));
229 addptr(cache, tmp); // construct pointer to cache entry
230 }
233 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
234 // a subtype of super_klass. EAX holds the super_klass. Blows ECX.
235 // Resets EDI to locals. Register sub_klass cannot be any of the above.
236 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) {
237 assert( Rsub_klass != rax, "rax, holds superklass" );
238 assert( Rsub_klass != rcx, "used as a temp" );
239 assert( Rsub_klass != rdi, "used as a temp, restored from locals" );
241 // Profile the not-null value's klass.
242 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi
244 // Do the check.
245 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx
247 // Profile the failure of the check.
248 profile_typecheck_failed(rcx); // blows rcx
249 }
251 void InterpreterMacroAssembler::f2ieee() {
252 if (IEEEPrecision) {
253 fstp_s(Address(rsp, 0));
254 fld_s(Address(rsp, 0));
255 }
256 }
259 void InterpreterMacroAssembler::d2ieee() {
260 if (IEEEPrecision) {
261 fstp_d(Address(rsp, 0));
262 fld_d(Address(rsp, 0));
263 }
264 }
266 // Java Expression Stack
268 void InterpreterMacroAssembler::pop_ptr(Register r) {
269 pop(r);
270 }
272 void InterpreterMacroAssembler::pop_i(Register r) {
273 pop(r);
274 }
276 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) {
277 pop(lo);
278 pop(hi);
279 }
281 void InterpreterMacroAssembler::pop_f() {
282 fld_s(Address(rsp, 0));
283 addptr(rsp, 1 * wordSize);
284 }
286 void InterpreterMacroAssembler::pop_d() {
287 fld_d(Address(rsp, 0));
288 addptr(rsp, 2 * wordSize);
289 }
292 void InterpreterMacroAssembler::pop(TosState state) {
293 switch (state) {
294 case atos: pop_ptr(rax); break;
295 case btos: // fall through
296 case ctos: // fall through
297 case stos: // fall through
298 case itos: pop_i(rax); break;
299 case ltos: pop_l(rax, rdx); break;
300 case ftos: pop_f(); break;
301 case dtos: pop_d(); break;
302 case vtos: /* nothing to do */ break;
303 default : ShouldNotReachHere();
304 }
305 verify_oop(rax, state);
306 }
308 void InterpreterMacroAssembler::push_ptr(Register r) {
309 push(r);
310 }
312 void InterpreterMacroAssembler::push_i(Register r) {
313 push(r);
314 }
316 void InterpreterMacroAssembler::push_l(Register lo, Register hi) {
317 push(hi);
318 push(lo);
319 }
321 void InterpreterMacroAssembler::push_f() {
322 // Do not schedule for no AGI! Never write beyond rsp!
323 subptr(rsp, 1 * wordSize);
324 fstp_s(Address(rsp, 0));
325 }
327 void InterpreterMacroAssembler::push_d(Register r) {
328 // Do not schedule for no AGI! Never write beyond rsp!
329 subptr(rsp, 2 * wordSize);
330 fstp_d(Address(rsp, 0));
331 }
334 void InterpreterMacroAssembler::push(TosState state) {
335 verify_oop(rax, state);
336 switch (state) {
337 case atos: push_ptr(rax); break;
338 case btos: // fall through
339 case ctos: // fall through
340 case stos: // fall through
341 case itos: push_i(rax); break;
342 case ltos: push_l(rax, rdx); break;
343 case ftos: push_f(); break;
344 case dtos: push_d(rax); break;
345 case vtos: /* nothing to do */ break;
346 default : ShouldNotReachHere();
347 }
348 }
351 // Helpers for swap and dup
352 void InterpreterMacroAssembler::load_ptr(int n, Register val) {
353 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n)));
354 }
356 void InterpreterMacroAssembler::store_ptr(int n, Register val) {
357 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val);
358 }
360 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) {
361 MacroAssembler::call_VM_leaf_base(entry_point, 0);
362 }
365 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) {
366 push(arg_1);
367 MacroAssembler::call_VM_leaf_base(entry_point, 1);
368 }
371 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) {
372 push(arg_2);
373 push(arg_1);
374 MacroAssembler::call_VM_leaf_base(entry_point, 2);
375 }
378 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) {
379 push(arg_3);
380 push(arg_2);
381 push(arg_1);
382 MacroAssembler::call_VM_leaf_base(entry_point, 3);
383 }
386 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() {
387 // set sender sp
388 lea(rsi, Address(rsp, wordSize));
389 // record last_sp
390 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi);
391 }
394 // Jump to from_interpreted entry of a call unless single stepping is possible
395 // in this thread in which case we must call the i2i entry
396 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) {
397 prepare_to_jump_from_interpreted();
399 if (JvmtiExport::can_post_interpreter_events()) {
400 Label run_compiled_code;
401 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
402 // compiled code in threads for which the event is enabled. Check here for
403 // interp_only_mode if these events CAN be enabled.
404 get_thread(temp);
405 // interp_only is an int, on little endian it is sufficient to test the byte only
406 // Is a cmpl faster (ce
407 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0);
408 jcc(Assembler::zero, run_compiled_code);
409 jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
410 bind(run_compiled_code);
411 }
413 jmp(Address(method, methodOopDesc::from_interpreted_offset()));
415 }
418 // The following two routines provide a hook so that an implementation
419 // can schedule the dispatch in two parts. Intel does not do this.
420 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) {
421 // Nothing Intel-specific to be done here.
422 }
424 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) {
425 dispatch_next(state, step);
426 }
428 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table,
429 bool verifyoop) {
430 verify_FPU(1, state);
431 if (VerifyActivationFrameSize) {
432 Label L;
433 mov(rcx, rbp);
434 subptr(rcx, rsp);
435 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize;
436 cmpptr(rcx, min_frame_size);
437 jcc(Assembler::greaterEqual, L);
438 stop("broken stack frame");
439 bind(L);
440 }
441 if (verifyoop) verify_oop(rax, state);
442 Address index(noreg, rbx, Address::times_ptr);
443 ExternalAddress tbl((address)table);
444 ArrayAddress dispatch(tbl, index);
445 jump(dispatch);
446 }
449 void InterpreterMacroAssembler::dispatch_only(TosState state) {
450 dispatch_base(state, Interpreter::dispatch_table(state));
451 }
454 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) {
455 dispatch_base(state, Interpreter::normal_table(state));
456 }
458 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) {
459 dispatch_base(state, Interpreter::normal_table(state), false);
460 }
463 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) {
464 // load next bytecode (load before advancing rsi to prevent AGI)
465 load_unsigned_byte(rbx, Address(rsi, step));
466 // advance rsi
467 increment(rsi, step);
468 dispatch_base(state, Interpreter::dispatch_table(state));
469 }
472 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
473 // load current bytecode
474 load_unsigned_byte(rbx, Address(rsi, 0));
475 dispatch_base(state, table);
476 }
478 // remove activation
479 //
480 // Unlock the receiver if this is a synchronized method.
481 // Unlock any Java monitors from syncronized blocks.
482 // Remove the activation from the stack.
483 //
484 // If there are locked Java monitors
485 // If throw_monitor_exception
486 // throws IllegalMonitorStateException
487 // Else if install_monitor_exception
488 // installs IllegalMonitorStateException
489 // Else
490 // no error processing
491 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr,
492 bool throw_monitor_exception,
493 bool install_monitor_exception,
494 bool notify_jvmdi) {
495 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result
496 // check if synchronized method
497 Label unlocked, unlock, no_unlock;
499 get_thread(rcx);
500 const Address do_not_unlock_if_synchronized(rcx,
501 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
503 movbool(rbx, do_not_unlock_if_synchronized);
504 mov(rdi,rbx);
505 movbool(do_not_unlock_if_synchronized, false); // reset the flag
507 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags
508 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset()));
510 testl(rcx, JVM_ACC_SYNCHRONIZED);
511 jcc(Assembler::zero, unlocked);
513 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
514 // is set.
515 mov(rcx,rdi);
516 testbool(rcx);
517 jcc(Assembler::notZero, no_unlock);
519 // unlock monitor
520 push(state); // save result
522 // BasicObjectLock will be first in list, since this is a synchronized method. However, need
523 // to check that the object has not been unlocked by an explicit monitorexit bytecode.
524 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock));
525 lea (rdx, monitor); // address of first monitor
527 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes()));
528 testptr(rax, rax);
529 jcc (Assembler::notZero, unlock);
531 pop(state);
532 if (throw_monitor_exception) {
533 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
535 // Entry already unlocked, need to throw exception
536 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
537 should_not_reach_here();
538 } else {
539 // Monitor already unlocked during a stack unroll.
540 // If requested, install an illegal_monitor_state_exception.
541 // Continue with stack unrolling.
542 if (install_monitor_exception) {
543 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
544 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
545 }
546 jmp(unlocked);
547 }
549 bind(unlock);
550 unlock_object(rdx);
551 pop(state);
553 // Check that for block-structured locking (i.e., that all locked objects has been unlocked)
554 bind(unlocked);
556 // rax, rdx: Might contain return value
558 // Check that all monitors are unlocked
559 {
560 Label loop, exception, entry, restart;
561 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
562 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
563 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
565 bind(restart);
566 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry
567 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
568 jmp(entry);
570 // Entry already locked, need to throw exception
571 bind(exception);
573 if (throw_monitor_exception) {
574 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
576 // Throw exception
577 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
578 should_not_reach_here();
579 } else {
580 // Stack unrolling. Unlock object and install illegal_monitor_exception
581 // Unlock does not block, so don't have to worry about the frame
583 push(state);
584 mov(rdx, rcx);
585 unlock_object(rdx);
586 pop(state);
588 if (install_monitor_exception) {
589 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
590 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
591 }
593 jmp(restart);
594 }
596 bind(loop);
597 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used
598 jcc(Assembler::notEqual, exception);
600 addptr(rcx, entry_size); // otherwise advance to next entry
601 bind(entry);
602 cmpptr(rcx, rbx); // check if bottom reached
603 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
604 }
606 bind(no_unlock);
608 // jvmti support
609 if (notify_jvmdi) {
610 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA
611 } else {
612 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA
613 }
615 // remove activation
616 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
617 leave(); // remove frame anchor
618 pop(ret_addr); // get return address
619 mov(rsp, rbx); // set sp to sender sp
620 if (UseSSE) {
621 // float and double are returned in xmm register in SSE-mode
622 if (state == ftos && UseSSE >= 1) {
623 subptr(rsp, wordSize);
624 fstp_s(Address(rsp, 0));
625 movflt(xmm0, Address(rsp, 0));
626 addptr(rsp, wordSize);
627 } else if (state == dtos && UseSSE >= 2) {
628 subptr(rsp, 2*wordSize);
629 fstp_d(Address(rsp, 0));
630 movdbl(xmm0, Address(rsp, 0));
631 addptr(rsp, 2*wordSize);
632 }
633 }
634 }
636 #endif /* !CC_INTERP */
639 // Lock object
640 //
641 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must
642 // be initialized with object to lock
643 void InterpreterMacroAssembler::lock_object(Register lock_reg) {
644 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
646 if (UseHeavyMonitors) {
647 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
648 } else {
650 Label done;
652 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
653 const Register obj_reg = rcx; // Will contain the oop
655 const int obj_offset = BasicObjectLock::obj_offset_in_bytes();
656 const int lock_offset = BasicObjectLock::lock_offset_in_bytes ();
657 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes();
659 Label slow_case;
661 // Load object pointer into obj_reg %rcx
662 movptr(obj_reg, Address(lock_reg, obj_offset));
664 if (UseBiasedLocking) {
665 // Note: we use noreg for the temporary register since it's hard
666 // to come up with a free register on all incoming code paths
667 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case);
668 }
670 // Load immediate 1 into swap_reg %rax,
671 movptr(swap_reg, (int32_t)1);
673 // Load (object->mark() | 1) into swap_reg %rax,
674 orptr(swap_reg, Address(obj_reg, 0));
676 // Save (object->mark() | 1) into BasicLock's displaced header
677 movptr(Address(lock_reg, mark_offset), swap_reg);
679 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock");
680 if (os::is_MP()) {
681 lock();
682 }
683 cmpxchgptr(lock_reg, Address(obj_reg, 0));
684 if (PrintBiasedLockingStatistics) {
685 cond_inc32(Assembler::zero,
686 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
687 }
688 jcc(Assembler::zero, done);
690 // Test if the oopMark is an obvious stack pointer, i.e.,
691 // 1) (mark & 3) == 0, and
692 // 2) rsp <= mark < mark + os::pagesize()
693 //
694 // These 3 tests can be done by evaluating the following
695 // expression: ((mark - rsp) & (3 - os::vm_page_size())),
696 // assuming both stack pointer and pagesize have their
697 // least significant 2 bits clear.
698 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg
699 subptr(swap_reg, rsp);
700 andptr(swap_reg, 3 - os::vm_page_size());
702 // Save the test result, for recursive case, the result is zero
703 movptr(Address(lock_reg, mark_offset), swap_reg);
705 if (PrintBiasedLockingStatistics) {
706 cond_inc32(Assembler::zero,
707 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
708 }
709 jcc(Assembler::zero, done);
711 bind(slow_case);
713 // Call the runtime routine for slow case
714 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
716 bind(done);
717 }
718 }
721 // Unlocks an object. Used in monitorexit bytecode and remove_activation.
722 //
723 // Argument: rdx : Points to BasicObjectLock structure for lock
724 // Throw an IllegalMonitorException if object is not locked by current thread
725 //
726 // Uses: rax, rbx, rcx, rdx
727 void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
728 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
730 if (UseHeavyMonitors) {
731 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
732 } else {
733 Label done;
735 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
736 const Register header_reg = rbx; // Will contain the old oopMark
737 const Register obj_reg = rcx; // Will contain the oop
739 save_bcp(); // Save in case of exception
741 // Convert from BasicObjectLock structure to object and BasicLock structure
742 // Store the BasicLock address into %rax,
743 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes()));
745 // Load oop into obj_reg(%rcx)
746 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ()));
748 // Free entry
749 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD);
751 if (UseBiasedLocking) {
752 biased_locking_exit(obj_reg, header_reg, done);
753 }
755 // Load the old header from BasicLock structure
756 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes()));
758 // Test for recursion
759 testptr(header_reg, header_reg);
761 // zero for recursive case
762 jcc(Assembler::zero, done);
764 // Atomic swap back the old header
765 if (os::is_MP()) lock();
766 cmpxchgptr(header_reg, Address(obj_reg, 0));
768 // zero for recursive case
769 jcc(Assembler::zero, done);
771 // Call the runtime routine for slow case.
772 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj
773 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
775 bind(done);
777 restore_bcp();
778 }
779 }
782 #ifndef CC_INTERP
784 // Test ImethodDataPtr. If it is null, continue at the specified label
785 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) {
786 assert(ProfileInterpreter, "must be profiling interpreter");
787 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
788 testptr(mdp, mdp);
789 jcc(Assembler::zero, zero_continue);
790 }
793 // Set the method data pointer for the current bcp.
794 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
795 assert(ProfileInterpreter, "must be profiling interpreter");
796 Label zero_continue;
797 push(rax);
798 push(rbx);
800 get_method(rbx);
801 // Test MDO to avoid the call if it is NULL.
802 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
803 testptr(rax, rax);
804 jcc(Assembler::zero, zero_continue);
806 // rbx,: method
807 // rsi: bcp
808 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi);
809 // rax,: mdi
811 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
812 testptr(rbx, rbx);
813 jcc(Assembler::zero, zero_continue);
814 addptr(rbx, in_bytes(methodDataOopDesc::data_offset()));
815 addptr(rbx, rax);
816 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx);
818 bind(zero_continue);
819 pop(rbx);
820 pop(rax);
821 }
823 void InterpreterMacroAssembler::verify_method_data_pointer() {
824 assert(ProfileInterpreter, "must be profiling interpreter");
825 #ifdef ASSERT
826 Label verify_continue;
827 push(rax);
828 push(rbx);
829 push(rcx);
830 push(rdx);
831 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue
832 get_method(rbx);
834 // If the mdp is valid, it will point to a DataLayout header which is
835 // consistent with the bcp. The converse is highly probable also.
836 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset())));
837 addptr(rdx, Address(rbx, methodOopDesc::const_offset()));
838 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset()));
839 cmpptr(rdx, rsi);
840 jcc(Assembler::equal, verify_continue);
841 // rbx,: method
842 // rsi: bcp
843 // rcx: mdp
844 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx);
845 bind(verify_continue);
846 pop(rdx);
847 pop(rcx);
848 pop(rbx);
849 pop(rax);
850 #endif // ASSERT
851 }
854 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) {
855 // %%% this seems to be used to store counter data which is surely 32bits
856 // however 64bit side stores 64 bits which seems wrong
857 assert(ProfileInterpreter, "must be profiling interpreter");
858 Address data(mdp_in, constant);
859 movptr(data, value);
860 }
863 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
864 int constant,
865 bool decrement) {
866 // Counter address
867 Address data(mdp_in, constant);
869 increment_mdp_data_at(data, decrement);
870 }
873 void InterpreterMacroAssembler::increment_mdp_data_at(Address data,
874 bool decrement) {
876 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
877 assert(ProfileInterpreter, "must be profiling interpreter");
879 // %%% 64bit treats this as 64 bit which seems unlikely
880 if (decrement) {
881 // Decrement the register. Set condition codes.
882 addl(data, -DataLayout::counter_increment);
883 // If the decrement causes the counter to overflow, stay negative
884 Label L;
885 jcc(Assembler::negative, L);
886 addl(data, DataLayout::counter_increment);
887 bind(L);
888 } else {
889 assert(DataLayout::counter_increment == 1,
890 "flow-free idiom only works with 1");
891 // Increment the register. Set carry flag.
892 addl(data, DataLayout::counter_increment);
893 // If the increment causes the counter to overflow, pull back by 1.
894 sbbl(data, 0);
895 }
896 }
899 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
900 Register reg,
901 int constant,
902 bool decrement) {
903 Address data(mdp_in, reg, Address::times_1, constant);
905 increment_mdp_data_at(data, decrement);
906 }
909 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) {
910 assert(ProfileInterpreter, "must be profiling interpreter");
911 int header_offset = in_bytes(DataLayout::header_offset());
912 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant);
913 // Set the flag
914 orl(Address(mdp_in, header_offset), header_bits);
915 }
919 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
920 int offset,
921 Register value,
922 Register test_value_out,
923 Label& not_equal_continue) {
924 assert(ProfileInterpreter, "must be profiling interpreter");
925 if (test_value_out == noreg) {
926 cmpptr(value, Address(mdp_in, offset));
927 } else {
928 // Put the test value into a register, so caller can use it:
929 movptr(test_value_out, Address(mdp_in, offset));
930 cmpptr(test_value_out, value);
931 }
932 jcc(Assembler::notEqual, not_equal_continue);
933 }
936 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) {
937 assert(ProfileInterpreter, "must be profiling interpreter");
938 Address disp_address(mdp_in, offset_of_disp);
939 addptr(mdp_in,disp_address);
940 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
941 }
944 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) {
945 assert(ProfileInterpreter, "must be profiling interpreter");
946 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
947 addptr(mdp_in, disp_address);
948 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
949 }
952 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) {
953 assert(ProfileInterpreter, "must be profiling interpreter");
954 addptr(mdp_in, constant);
955 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
956 }
959 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) {
960 assert(ProfileInterpreter, "must be profiling interpreter");
961 push(return_bci); // save/restore across call_VM
962 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci);
963 pop(return_bci);
964 }
967 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) {
968 if (ProfileInterpreter) {
969 Label profile_continue;
971 // If no method data exists, go to profile_continue.
972 // Otherwise, assign to mdp
973 test_method_data_pointer(mdp, profile_continue);
975 // We are taking a branch. Increment the taken count.
976 // We inline increment_mdp_data_at to return bumped_count in a register
977 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
978 Address data(mdp, in_bytes(JumpData::taken_offset()));
980 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit
981 movl(bumped_count,data);
982 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
983 addl(bumped_count, DataLayout::counter_increment);
984 sbbl(bumped_count, 0);
985 movl(data,bumped_count); // Store back out
987 // The method data pointer needs to be updated to reflect the new target.
988 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
989 bind (profile_continue);
990 }
991 }
994 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) {
995 if (ProfileInterpreter) {
996 Label profile_continue;
998 // If no method data exists, go to profile_continue.
999 test_method_data_pointer(mdp, profile_continue);
1001 // We are taking a branch. Increment the not taken count.
1002 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()));
1004 // The method data pointer needs to be updated to correspond to the next bytecode
1005 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size()));
1006 bind (profile_continue);
1007 }
1008 }
1011 void InterpreterMacroAssembler::profile_call(Register mdp) {
1012 if (ProfileInterpreter) {
1013 Label profile_continue;
1015 // If no method data exists, go to profile_continue.
1016 test_method_data_pointer(mdp, profile_continue);
1018 // We are making a call. Increment the count.
1019 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1021 // The method data pointer needs to be updated to reflect the new target.
1022 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size()));
1023 bind (profile_continue);
1024 }
1025 }
1028 void InterpreterMacroAssembler::profile_final_call(Register mdp) {
1029 if (ProfileInterpreter) {
1030 Label profile_continue;
1032 // If no method data exists, go to profile_continue.
1033 test_method_data_pointer(mdp, profile_continue);
1035 // We are making a call. Increment the count.
1036 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1038 // The method data pointer needs to be updated to reflect the new target.
1039 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size()));
1040 bind (profile_continue);
1041 }
1042 }
1045 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp,
1046 Register reg2,
1047 bool receiver_can_be_null) {
1048 if (ProfileInterpreter) {
1049 Label profile_continue;
1051 // If no method data exists, go to profile_continue.
1052 test_method_data_pointer(mdp, profile_continue);
1054 Label skip_receiver_profile;
1055 if (receiver_can_be_null) {
1056 Label not_null;
1057 testptr(receiver, receiver);
1058 jccb(Assembler::notZero, not_null);
1059 // We are making a call. Increment the count for null receiver.
1060 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1061 jmp(skip_receiver_profile);
1062 bind(not_null);
1063 }
1065 // Record the receiver type.
1066 record_klass_in_profile(receiver, mdp, reg2, true);
1067 bind(skip_receiver_profile);
1069 // The method data pointer needs to be updated to reflect the new target.
1070 update_mdp_by_constant(mdp,
1071 in_bytes(VirtualCallData::
1072 virtual_call_data_size()));
1073 bind(profile_continue);
1074 }
1075 }
1078 void InterpreterMacroAssembler::record_klass_in_profile_helper(
1079 Register receiver, Register mdp,
1080 Register reg2, int start_row,
1081 Label& done, bool is_virtual_call) {
1082 if (TypeProfileWidth == 0) {
1083 if (is_virtual_call) {
1084 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1085 }
1086 return;
1087 }
1089 int last_row = VirtualCallData::row_limit() - 1;
1090 assert(start_row <= last_row, "must be work left to do");
1091 // Test this row for both the receiver and for null.
1092 // Take any of three different outcomes:
1093 // 1. found receiver => increment count and goto done
1094 // 2. found null => keep looking for case 1, maybe allocate this cell
1095 // 3. found something else => keep looking for cases 1 and 2
1096 // Case 3 is handled by a recursive call.
1097 for (int row = start_row; row <= last_row; row++) {
1098 Label next_test;
1099 bool test_for_null_also = (row == start_row);
1101 // See if the receiver is receiver[n].
1102 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row));
1103 test_mdp_data_at(mdp, recvr_offset, receiver,
1104 (test_for_null_also ? reg2 : noreg),
1105 next_test);
1106 // (Reg2 now contains the receiver from the CallData.)
1108 // The receiver is receiver[n]. Increment count[n].
1109 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row));
1110 increment_mdp_data_at(mdp, count_offset);
1111 jmp(done);
1112 bind(next_test);
1114 if (row == start_row) {
1115 Label found_null;
1116 // Failed the equality check on receiver[n]... Test for null.
1117 testptr(reg2, reg2);
1118 if (start_row == last_row) {
1119 // The only thing left to do is handle the null case.
1120 if (is_virtual_call) {
1121 jccb(Assembler::zero, found_null);
1122 // Receiver did not match any saved receiver and there is no empty row for it.
1123 // Increment total counter to indicate polymorphic case.
1124 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1125 jmp(done);
1126 bind(found_null);
1127 } else {
1128 jcc(Assembler::notZero, done);
1129 }
1130 break;
1131 }
1132 // Since null is rare, make it be the branch-taken case.
1133 jcc(Assembler::zero, found_null);
1135 // Put all the "Case 3" tests here.
1136 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call);
1138 // Found a null. Keep searching for a matching receiver,
1139 // but remember that this is an empty (unused) slot.
1140 bind(found_null);
1141 }
1142 }
1144 // In the fall-through case, we found no matching receiver, but we
1145 // observed the receiver[start_row] is NULL.
1147 // Fill in the receiver field and increment the count.
1148 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row));
1149 set_mdp_data_at(mdp, recvr_offset, receiver);
1150 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row));
1151 movptr(reg2, (int32_t)DataLayout::counter_increment);
1152 set_mdp_data_at(mdp, count_offset, reg2);
1153 if (start_row > 0) {
1154 jmp(done);
1155 }
1156 }
1158 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
1159 Register mdp, Register reg2,
1160 bool is_virtual_call) {
1161 assert(ProfileInterpreter, "must be profiling");
1162 Label done;
1164 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call);
1166 bind (done);
1167 }
1169 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) {
1170 if (ProfileInterpreter) {
1171 Label profile_continue;
1172 uint row;
1174 // If no method data exists, go to profile_continue.
1175 test_method_data_pointer(mdp, profile_continue);
1177 // Update the total ret count.
1178 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1180 for (row = 0; row < RetData::row_limit(); row++) {
1181 Label next_test;
1183 // See if return_bci is equal to bci[n]:
1184 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci,
1185 noreg, next_test);
1187 // return_bci is equal to bci[n]. Increment the count.
1188 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));
1190 // The method data pointer needs to be updated to reflect the new target.
1191 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row)));
1192 jmp(profile_continue);
1193 bind(next_test);
1194 }
1196 update_mdp_for_ret(return_bci);
1198 bind (profile_continue);
1199 }
1200 }
1203 void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
1204 if (ProfileInterpreter) {
1205 Label profile_continue;
1207 // If no method data exists, go to profile_continue.
1208 test_method_data_pointer(mdp, profile_continue);
1210 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant());
1212 // The method data pointer needs to be updated.
1213 int mdp_delta = in_bytes(BitData::bit_data_size());
1214 if (TypeProfileCasts) {
1215 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1216 }
1217 update_mdp_by_constant(mdp, mdp_delta);
1219 bind (profile_continue);
1220 }
1221 }
1224 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) {
1225 if (ProfileInterpreter && TypeProfileCasts) {
1226 Label profile_continue;
1228 // If no method data exists, go to profile_continue.
1229 test_method_data_pointer(mdp, profile_continue);
1231 int count_offset = in_bytes(CounterData::count_offset());
1232 // Back up the address, since we have already bumped the mdp.
1233 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size());
1235 // *Decrement* the counter. We expect to see zero or small negatives.
1236 increment_mdp_data_at(mdp, count_offset, true);
1238 bind (profile_continue);
1239 }
1240 }
1243 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2)
1244 {
1245 if (ProfileInterpreter) {
1246 Label profile_continue;
1248 // If no method data exists, go to profile_continue.
1249 test_method_data_pointer(mdp, profile_continue);
1251 // The method data pointer needs to be updated.
1252 int mdp_delta = in_bytes(BitData::bit_data_size());
1253 if (TypeProfileCasts) {
1254 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1256 // Record the object type.
1257 record_klass_in_profile(klass, mdp, reg2, false);
1258 assert(reg2 == rdi, "we know how to fix this blown reg");
1259 restore_locals(); // Restore EDI
1260 }
1261 update_mdp_by_constant(mdp, mdp_delta);
1263 bind(profile_continue);
1264 }
1265 }
1268 void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
1269 if (ProfileInterpreter) {
1270 Label profile_continue;
1272 // If no method data exists, go to profile_continue.
1273 test_method_data_pointer(mdp, profile_continue);
1275 // Update the default case count
1276 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset()));
1278 // The method data pointer needs to be updated.
1279 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset()));
1281 bind (profile_continue);
1282 }
1283 }
1286 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) {
1287 if (ProfileInterpreter) {
1288 Label profile_continue;
1290 // If no method data exists, go to profile_continue.
1291 test_method_data_pointer(mdp, profile_continue);
1293 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes()
1294 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size()));
1295 // index is positive and so should have correct value if this code were
1296 // used on 64bits
1297 imulptr(index, reg2);
1298 addptr(index, in_bytes(MultiBranchData::case_array_offset()));
1300 // Update the case count
1301 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset()));
1303 // The method data pointer needs to be updated.
1304 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset()));
1306 bind (profile_continue);
1307 }
1308 }
1310 #endif // !CC_INTERP
1314 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) {
1315 if (state == atos) MacroAssembler::verify_oop(reg);
1316 }
1319 #ifndef CC_INTERP
1320 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) {
1321 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth);
1322 }
1324 #endif /* CC_INTERP */
1327 void InterpreterMacroAssembler::notify_method_entry() {
1328 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1329 // track stack depth. If it is possible to enter interp_only_mode we add
1330 // the code to check if the event should be sent.
1331 if (JvmtiExport::can_post_interpreter_events()) {
1332 Label L;
1333 get_thread(rcx);
1334 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1335 testl(rcx,rcx);
1336 jcc(Assembler::zero, L);
1337 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry));
1338 bind(L);
1339 }
1341 {
1342 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1343 get_thread(rcx);
1344 get_method(rbx);
1345 call_VM_leaf(
1346 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx);
1347 }
1349 // RedefineClasses() tracing support for obsolete method entry
1350 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) {
1351 get_thread(rcx);
1352 get_method(rbx);
1353 call_VM_leaf(
1354 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
1355 rcx, rbx);
1356 }
1357 }
1360 void InterpreterMacroAssembler::notify_method_exit(
1361 TosState state, NotifyMethodExitMode mode) {
1362 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1363 // track stack depth. If it is possible to enter interp_only_mode we add
1364 // the code to check if the event should be sent.
1365 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) {
1366 Label L;
1367 // Note: frame::interpreter_frame_result has a dependency on how the
1368 // method result is saved across the call to post_method_exit. If this
1369 // is changed then the interpreter_frame_result implementation will
1370 // need to be updated too.
1372 // For c++ interpreter the result is always stored at a known location in the frame
1373 // template interpreter will leave it on the top of the stack.
1374 NOT_CC_INTERP(push(state);)
1375 get_thread(rcx);
1376 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1377 testl(rcx,rcx);
1378 jcc(Assembler::zero, L);
1379 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
1380 bind(L);
1381 NOT_CC_INTERP(pop(state);)
1382 }
1384 {
1385 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1386 NOT_CC_INTERP(push(state));
1387 get_thread(rbx);
1388 get_method(rcx);
1389 call_VM_leaf(
1390 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
1391 rbx, rcx);
1392 NOT_CC_INTERP(pop(state));
1393 }
1394 }