Thu, 07 Oct 2010 08:06:06 -0700
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
Summary: min_stack_allowed is a compile time constant and Stack*Pages are settable
Reviewed-by: dholmes, kvn
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, size_t index_size) {
193 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
194 if (index_size == sizeof(u2)) {
195 load_unsigned_short(reg, Address(rsi, bcp_offset));
196 } else if (index_size == sizeof(u4)) {
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 } else if (index_size == sizeof(u1)) {
205 assert(EnableMethodHandles, "tiny index used only for EnableMethodHandles");
206 load_unsigned_byte(reg, Address(rsi, bcp_offset));
207 } else {
208 ShouldNotReachHere();
209 }
210 }
213 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index,
214 int bcp_offset, size_t index_size) {
215 assert(cache != index, "must use different registers");
216 get_cache_index_at_bcp(index, bcp_offset, index_size);
217 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
218 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
219 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
220 }
223 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
224 int bcp_offset, size_t index_size) {
225 assert(cache != tmp, "must use different register");
226 get_cache_index_at_bcp(tmp, bcp_offset, index_size);
227 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
228 // convert from field index to ConstantPoolCacheEntry index
229 // and from word offset to byte offset
230 shll(tmp, 2 + LogBytesPerWord);
231 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
232 // skip past the header
233 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset()));
234 addptr(cache, tmp); // construct pointer to cache entry
235 }
238 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
239 // a subtype of super_klass. EAX holds the super_klass. Blows ECX.
240 // Resets EDI to locals. Register sub_klass cannot be any of the above.
241 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) {
242 assert( Rsub_klass != rax, "rax, holds superklass" );
243 assert( Rsub_klass != rcx, "used as a temp" );
244 assert( Rsub_klass != rdi, "used as a temp, restored from locals" );
246 // Profile the not-null value's klass.
247 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi
249 // Do the check.
250 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx
252 // Profile the failure of the check.
253 profile_typecheck_failed(rcx); // blows rcx
254 }
256 void InterpreterMacroAssembler::f2ieee() {
257 if (IEEEPrecision) {
258 fstp_s(Address(rsp, 0));
259 fld_s(Address(rsp, 0));
260 }
261 }
264 void InterpreterMacroAssembler::d2ieee() {
265 if (IEEEPrecision) {
266 fstp_d(Address(rsp, 0));
267 fld_d(Address(rsp, 0));
268 }
269 }
271 // Java Expression Stack
273 void InterpreterMacroAssembler::pop_ptr(Register r) {
274 pop(r);
275 }
277 void InterpreterMacroAssembler::pop_i(Register r) {
278 pop(r);
279 }
281 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) {
282 pop(lo);
283 pop(hi);
284 }
286 void InterpreterMacroAssembler::pop_f() {
287 fld_s(Address(rsp, 0));
288 addptr(rsp, 1 * wordSize);
289 }
291 void InterpreterMacroAssembler::pop_d() {
292 fld_d(Address(rsp, 0));
293 addptr(rsp, 2 * wordSize);
294 }
297 void InterpreterMacroAssembler::pop(TosState state) {
298 switch (state) {
299 case atos: pop_ptr(rax); break;
300 case btos: // fall through
301 case ctos: // fall through
302 case stos: // fall through
303 case itos: pop_i(rax); break;
304 case ltos: pop_l(rax, rdx); break;
305 case ftos: pop_f(); break;
306 case dtos: pop_d(); break;
307 case vtos: /* nothing to do */ break;
308 default : ShouldNotReachHere();
309 }
310 verify_oop(rax, state);
311 }
313 void InterpreterMacroAssembler::push_ptr(Register r) {
314 push(r);
315 }
317 void InterpreterMacroAssembler::push_i(Register r) {
318 push(r);
319 }
321 void InterpreterMacroAssembler::push_l(Register lo, Register hi) {
322 push(hi);
323 push(lo);
324 }
326 void InterpreterMacroAssembler::push_f() {
327 // Do not schedule for no AGI! Never write beyond rsp!
328 subptr(rsp, 1 * wordSize);
329 fstp_s(Address(rsp, 0));
330 }
332 void InterpreterMacroAssembler::push_d(Register r) {
333 // Do not schedule for no AGI! Never write beyond rsp!
334 subptr(rsp, 2 * wordSize);
335 fstp_d(Address(rsp, 0));
336 }
339 void InterpreterMacroAssembler::push(TosState state) {
340 verify_oop(rax, state);
341 switch (state) {
342 case atos: push_ptr(rax); break;
343 case btos: // fall through
344 case ctos: // fall through
345 case stos: // fall through
346 case itos: push_i(rax); break;
347 case ltos: push_l(rax, rdx); break;
348 case ftos: push_f(); break;
349 case dtos: push_d(rax); break;
350 case vtos: /* nothing to do */ break;
351 default : ShouldNotReachHere();
352 }
353 }
356 // Helpers for swap and dup
357 void InterpreterMacroAssembler::load_ptr(int n, Register val) {
358 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n)));
359 }
361 void InterpreterMacroAssembler::store_ptr(int n, Register val) {
362 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val);
363 }
365 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) {
366 MacroAssembler::call_VM_leaf_base(entry_point, 0);
367 }
370 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) {
371 push(arg_1);
372 MacroAssembler::call_VM_leaf_base(entry_point, 1);
373 }
376 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) {
377 push(arg_2);
378 push(arg_1);
379 MacroAssembler::call_VM_leaf_base(entry_point, 2);
380 }
383 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) {
384 push(arg_3);
385 push(arg_2);
386 push(arg_1);
387 MacroAssembler::call_VM_leaf_base(entry_point, 3);
388 }
391 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() {
392 // set sender sp
393 lea(rsi, Address(rsp, wordSize));
394 // record last_sp
395 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi);
396 }
399 // Jump to from_interpreted entry of a call unless single stepping is possible
400 // in this thread in which case we must call the i2i entry
401 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) {
402 prepare_to_jump_from_interpreted();
404 if (JvmtiExport::can_post_interpreter_events()) {
405 Label run_compiled_code;
406 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
407 // compiled code in threads for which the event is enabled. Check here for
408 // interp_only_mode if these events CAN be enabled.
409 get_thread(temp);
410 // interp_only is an int, on little endian it is sufficient to test the byte only
411 // Is a cmpl faster (ce
412 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0);
413 jcc(Assembler::zero, run_compiled_code);
414 jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
415 bind(run_compiled_code);
416 }
418 jmp(Address(method, methodOopDesc::from_interpreted_offset()));
420 }
423 // The following two routines provide a hook so that an implementation
424 // can schedule the dispatch in two parts. Intel does not do this.
425 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) {
426 // Nothing Intel-specific to be done here.
427 }
429 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) {
430 dispatch_next(state, step);
431 }
433 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table,
434 bool verifyoop) {
435 verify_FPU(1, state);
436 if (VerifyActivationFrameSize) {
437 Label L;
438 mov(rcx, rbp);
439 subptr(rcx, rsp);
440 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize;
441 cmpptr(rcx, min_frame_size);
442 jcc(Assembler::greaterEqual, L);
443 stop("broken stack frame");
444 bind(L);
445 }
446 if (verifyoop) verify_oop(rax, state);
447 Address index(noreg, rbx, Address::times_ptr);
448 ExternalAddress tbl((address)table);
449 ArrayAddress dispatch(tbl, index);
450 jump(dispatch);
451 }
454 void InterpreterMacroAssembler::dispatch_only(TosState state) {
455 dispatch_base(state, Interpreter::dispatch_table(state));
456 }
459 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) {
460 dispatch_base(state, Interpreter::normal_table(state));
461 }
463 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) {
464 dispatch_base(state, Interpreter::normal_table(state), false);
465 }
468 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) {
469 // load next bytecode (load before advancing rsi to prevent AGI)
470 load_unsigned_byte(rbx, Address(rsi, step));
471 // advance rsi
472 increment(rsi, step);
473 dispatch_base(state, Interpreter::dispatch_table(state));
474 }
477 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
478 // load current bytecode
479 load_unsigned_byte(rbx, Address(rsi, 0));
480 dispatch_base(state, table);
481 }
483 // remove activation
484 //
485 // Unlock the receiver if this is a synchronized method.
486 // Unlock any Java monitors from syncronized blocks.
487 // Remove the activation from the stack.
488 //
489 // If there are locked Java monitors
490 // If throw_monitor_exception
491 // throws IllegalMonitorStateException
492 // Else if install_monitor_exception
493 // installs IllegalMonitorStateException
494 // Else
495 // no error processing
496 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr,
497 bool throw_monitor_exception,
498 bool install_monitor_exception,
499 bool notify_jvmdi) {
500 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result
501 // check if synchronized method
502 Label unlocked, unlock, no_unlock;
504 get_thread(rcx);
505 const Address do_not_unlock_if_synchronized(rcx,
506 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
508 movbool(rbx, do_not_unlock_if_synchronized);
509 mov(rdi,rbx);
510 movbool(do_not_unlock_if_synchronized, false); // reset the flag
512 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags
513 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset()));
515 testl(rcx, JVM_ACC_SYNCHRONIZED);
516 jcc(Assembler::zero, unlocked);
518 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
519 // is set.
520 mov(rcx,rdi);
521 testbool(rcx);
522 jcc(Assembler::notZero, no_unlock);
524 // unlock monitor
525 push(state); // save result
527 // BasicObjectLock will be first in list, since this is a synchronized method. However, need
528 // to check that the object has not been unlocked by an explicit monitorexit bytecode.
529 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock));
530 lea (rdx, monitor); // address of first monitor
532 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes()));
533 testptr(rax, rax);
534 jcc (Assembler::notZero, unlock);
536 pop(state);
537 if (throw_monitor_exception) {
538 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
540 // Entry already unlocked, need to throw exception
541 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
542 should_not_reach_here();
543 } else {
544 // Monitor already unlocked during a stack unroll.
545 // If requested, install an illegal_monitor_state_exception.
546 // Continue with stack unrolling.
547 if (install_monitor_exception) {
548 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
549 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
550 }
551 jmp(unlocked);
552 }
554 bind(unlock);
555 unlock_object(rdx);
556 pop(state);
558 // Check that for block-structured locking (i.e., that all locked objects has been unlocked)
559 bind(unlocked);
561 // rax, rdx: Might contain return value
563 // Check that all monitors are unlocked
564 {
565 Label loop, exception, entry, restart;
566 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
567 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
568 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
570 bind(restart);
571 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry
572 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
573 jmp(entry);
575 // Entry already locked, need to throw exception
576 bind(exception);
578 if (throw_monitor_exception) {
579 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
581 // Throw exception
582 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
583 should_not_reach_here();
584 } else {
585 // Stack unrolling. Unlock object and install illegal_monitor_exception
586 // Unlock does not block, so don't have to worry about the frame
588 push(state);
589 mov(rdx, rcx);
590 unlock_object(rdx);
591 pop(state);
593 if (install_monitor_exception) {
594 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
595 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
596 }
598 jmp(restart);
599 }
601 bind(loop);
602 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used
603 jcc(Assembler::notEqual, exception);
605 addptr(rcx, entry_size); // otherwise advance to next entry
606 bind(entry);
607 cmpptr(rcx, rbx); // check if bottom reached
608 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
609 }
611 bind(no_unlock);
613 // jvmti support
614 if (notify_jvmdi) {
615 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA
616 } else {
617 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA
618 }
620 // remove activation
621 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
622 leave(); // remove frame anchor
623 pop(ret_addr); // get return address
624 mov(rsp, rbx); // set sp to sender sp
625 if (UseSSE) {
626 // float and double are returned in xmm register in SSE-mode
627 if (state == ftos && UseSSE >= 1) {
628 subptr(rsp, wordSize);
629 fstp_s(Address(rsp, 0));
630 movflt(xmm0, Address(rsp, 0));
631 addptr(rsp, wordSize);
632 } else if (state == dtos && UseSSE >= 2) {
633 subptr(rsp, 2*wordSize);
634 fstp_d(Address(rsp, 0));
635 movdbl(xmm0, Address(rsp, 0));
636 addptr(rsp, 2*wordSize);
637 }
638 }
639 }
641 #endif /* !CC_INTERP */
644 // Lock object
645 //
646 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must
647 // be initialized with object to lock
648 void InterpreterMacroAssembler::lock_object(Register lock_reg) {
649 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
651 if (UseHeavyMonitors) {
652 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
653 } else {
655 Label done;
657 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
658 const Register obj_reg = rcx; // Will contain the oop
660 const int obj_offset = BasicObjectLock::obj_offset_in_bytes();
661 const int lock_offset = BasicObjectLock::lock_offset_in_bytes ();
662 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes();
664 Label slow_case;
666 // Load object pointer into obj_reg %rcx
667 movptr(obj_reg, Address(lock_reg, obj_offset));
669 if (UseBiasedLocking) {
670 // Note: we use noreg for the temporary register since it's hard
671 // to come up with a free register on all incoming code paths
672 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case);
673 }
675 // Load immediate 1 into swap_reg %rax,
676 movptr(swap_reg, (int32_t)1);
678 // Load (object->mark() | 1) into swap_reg %rax,
679 orptr(swap_reg, Address(obj_reg, 0));
681 // Save (object->mark() | 1) into BasicLock's displaced header
682 movptr(Address(lock_reg, mark_offset), swap_reg);
684 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock");
685 if (os::is_MP()) {
686 lock();
687 }
688 cmpxchgptr(lock_reg, Address(obj_reg, 0));
689 if (PrintBiasedLockingStatistics) {
690 cond_inc32(Assembler::zero,
691 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
692 }
693 jcc(Assembler::zero, done);
695 // Test if the oopMark is an obvious stack pointer, i.e.,
696 // 1) (mark & 3) == 0, and
697 // 2) rsp <= mark < mark + os::pagesize()
698 //
699 // These 3 tests can be done by evaluating the following
700 // expression: ((mark - rsp) & (3 - os::vm_page_size())),
701 // assuming both stack pointer and pagesize have their
702 // least significant 2 bits clear.
703 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg
704 subptr(swap_reg, rsp);
705 andptr(swap_reg, 3 - os::vm_page_size());
707 // Save the test result, for recursive case, the result is zero
708 movptr(Address(lock_reg, mark_offset), swap_reg);
710 if (PrintBiasedLockingStatistics) {
711 cond_inc32(Assembler::zero,
712 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
713 }
714 jcc(Assembler::zero, done);
716 bind(slow_case);
718 // Call the runtime routine for slow case
719 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
721 bind(done);
722 }
723 }
726 // Unlocks an object. Used in monitorexit bytecode and remove_activation.
727 //
728 // Argument: rdx : Points to BasicObjectLock structure for lock
729 // Throw an IllegalMonitorException if object is not locked by current thread
730 //
731 // Uses: rax, rbx, rcx, rdx
732 void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
733 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
735 if (UseHeavyMonitors) {
736 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
737 } else {
738 Label done;
740 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
741 const Register header_reg = rbx; // Will contain the old oopMark
742 const Register obj_reg = rcx; // Will contain the oop
744 save_bcp(); // Save in case of exception
746 // Convert from BasicObjectLock structure to object and BasicLock structure
747 // Store the BasicLock address into %rax,
748 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes()));
750 // Load oop into obj_reg(%rcx)
751 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ()));
753 // Free entry
754 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD);
756 if (UseBiasedLocking) {
757 biased_locking_exit(obj_reg, header_reg, done);
758 }
760 // Load the old header from BasicLock structure
761 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes()));
763 // Test for recursion
764 testptr(header_reg, header_reg);
766 // zero for recursive case
767 jcc(Assembler::zero, done);
769 // Atomic swap back the old header
770 if (os::is_MP()) lock();
771 cmpxchgptr(header_reg, Address(obj_reg, 0));
773 // zero for recursive case
774 jcc(Assembler::zero, done);
776 // Call the runtime routine for slow case.
777 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj
778 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
780 bind(done);
782 restore_bcp();
783 }
784 }
787 #ifndef CC_INTERP
789 // Test ImethodDataPtr. If it is null, continue at the specified label
790 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) {
791 assert(ProfileInterpreter, "must be profiling interpreter");
792 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
793 testptr(mdp, mdp);
794 jcc(Assembler::zero, zero_continue);
795 }
798 // Set the method data pointer for the current bcp.
799 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
800 assert(ProfileInterpreter, "must be profiling interpreter");
801 Label zero_continue;
802 push(rax);
803 push(rbx);
805 get_method(rbx);
806 // Test MDO to avoid the call if it is NULL.
807 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
808 testptr(rax, rax);
809 jcc(Assembler::zero, zero_continue);
811 // rbx,: method
812 // rsi: bcp
813 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi);
814 // rax,: mdi
816 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
817 testptr(rbx, rbx);
818 jcc(Assembler::zero, zero_continue);
819 addptr(rbx, in_bytes(methodDataOopDesc::data_offset()));
820 addptr(rbx, rax);
821 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx);
823 bind(zero_continue);
824 pop(rbx);
825 pop(rax);
826 }
828 void InterpreterMacroAssembler::verify_method_data_pointer() {
829 assert(ProfileInterpreter, "must be profiling interpreter");
830 #ifdef ASSERT
831 Label verify_continue;
832 push(rax);
833 push(rbx);
834 push(rcx);
835 push(rdx);
836 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue
837 get_method(rbx);
839 // If the mdp is valid, it will point to a DataLayout header which is
840 // consistent with the bcp. The converse is highly probable also.
841 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset())));
842 addptr(rdx, Address(rbx, methodOopDesc::const_offset()));
843 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset()));
844 cmpptr(rdx, rsi);
845 jcc(Assembler::equal, verify_continue);
846 // rbx,: method
847 // rsi: bcp
848 // rcx: mdp
849 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx);
850 bind(verify_continue);
851 pop(rdx);
852 pop(rcx);
853 pop(rbx);
854 pop(rax);
855 #endif // ASSERT
856 }
859 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) {
860 // %%% this seems to be used to store counter data which is surely 32bits
861 // however 64bit side stores 64 bits which seems wrong
862 assert(ProfileInterpreter, "must be profiling interpreter");
863 Address data(mdp_in, constant);
864 movptr(data, value);
865 }
868 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
869 int constant,
870 bool decrement) {
871 // Counter address
872 Address data(mdp_in, constant);
874 increment_mdp_data_at(data, decrement);
875 }
878 void InterpreterMacroAssembler::increment_mdp_data_at(Address data,
879 bool decrement) {
881 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
882 assert(ProfileInterpreter, "must be profiling interpreter");
884 // %%% 64bit treats this as 64 bit which seems unlikely
885 if (decrement) {
886 // Decrement the register. Set condition codes.
887 addl(data, -DataLayout::counter_increment);
888 // If the decrement causes the counter to overflow, stay negative
889 Label L;
890 jcc(Assembler::negative, L);
891 addl(data, DataLayout::counter_increment);
892 bind(L);
893 } else {
894 assert(DataLayout::counter_increment == 1,
895 "flow-free idiom only works with 1");
896 // Increment the register. Set carry flag.
897 addl(data, DataLayout::counter_increment);
898 // If the increment causes the counter to overflow, pull back by 1.
899 sbbl(data, 0);
900 }
901 }
904 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
905 Register reg,
906 int constant,
907 bool decrement) {
908 Address data(mdp_in, reg, Address::times_1, constant);
910 increment_mdp_data_at(data, decrement);
911 }
914 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) {
915 assert(ProfileInterpreter, "must be profiling interpreter");
916 int header_offset = in_bytes(DataLayout::header_offset());
917 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant);
918 // Set the flag
919 orl(Address(mdp_in, header_offset), header_bits);
920 }
924 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
925 int offset,
926 Register value,
927 Register test_value_out,
928 Label& not_equal_continue) {
929 assert(ProfileInterpreter, "must be profiling interpreter");
930 if (test_value_out == noreg) {
931 cmpptr(value, Address(mdp_in, offset));
932 } else {
933 // Put the test value into a register, so caller can use it:
934 movptr(test_value_out, Address(mdp_in, offset));
935 cmpptr(test_value_out, value);
936 }
937 jcc(Assembler::notEqual, not_equal_continue);
938 }
941 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) {
942 assert(ProfileInterpreter, "must be profiling interpreter");
943 Address disp_address(mdp_in, offset_of_disp);
944 addptr(mdp_in,disp_address);
945 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
946 }
949 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) {
950 assert(ProfileInterpreter, "must be profiling interpreter");
951 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
952 addptr(mdp_in, disp_address);
953 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
954 }
957 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) {
958 assert(ProfileInterpreter, "must be profiling interpreter");
959 addptr(mdp_in, constant);
960 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
961 }
964 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) {
965 assert(ProfileInterpreter, "must be profiling interpreter");
966 push(return_bci); // save/restore across call_VM
967 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci);
968 pop(return_bci);
969 }
972 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) {
973 if (ProfileInterpreter) {
974 Label profile_continue;
976 // If no method data exists, go to profile_continue.
977 // Otherwise, assign to mdp
978 test_method_data_pointer(mdp, profile_continue);
980 // We are taking a branch. Increment the taken count.
981 // We inline increment_mdp_data_at to return bumped_count in a register
982 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
983 Address data(mdp, in_bytes(JumpData::taken_offset()));
985 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit
986 movl(bumped_count,data);
987 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
988 addl(bumped_count, DataLayout::counter_increment);
989 sbbl(bumped_count, 0);
990 movl(data,bumped_count); // Store back out
992 // The method data pointer needs to be updated to reflect the new target.
993 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
994 bind (profile_continue);
995 }
996 }
999 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) {
1000 if (ProfileInterpreter) {
1001 Label profile_continue;
1003 // If no method data exists, go to profile_continue.
1004 test_method_data_pointer(mdp, profile_continue);
1006 // We are taking a branch. Increment the not taken count.
1007 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()));
1009 // The method data pointer needs to be updated to correspond to the next bytecode
1010 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size()));
1011 bind (profile_continue);
1012 }
1013 }
1016 void InterpreterMacroAssembler::profile_call(Register mdp) {
1017 if (ProfileInterpreter) {
1018 Label profile_continue;
1020 // If no method data exists, go to profile_continue.
1021 test_method_data_pointer(mdp, profile_continue);
1023 // We are making a call. Increment the count.
1024 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1026 // The method data pointer needs to be updated to reflect the new target.
1027 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size()));
1028 bind (profile_continue);
1029 }
1030 }
1033 void InterpreterMacroAssembler::profile_final_call(Register mdp) {
1034 if (ProfileInterpreter) {
1035 Label profile_continue;
1037 // If no method data exists, go to profile_continue.
1038 test_method_data_pointer(mdp, profile_continue);
1040 // We are making a call. Increment the count.
1041 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1043 // The method data pointer needs to be updated to reflect the new target.
1044 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size()));
1045 bind (profile_continue);
1046 }
1047 }
1050 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp,
1051 Register reg2,
1052 bool receiver_can_be_null) {
1053 if (ProfileInterpreter) {
1054 Label profile_continue;
1056 // If no method data exists, go to profile_continue.
1057 test_method_data_pointer(mdp, profile_continue);
1059 Label skip_receiver_profile;
1060 if (receiver_can_be_null) {
1061 Label not_null;
1062 testptr(receiver, receiver);
1063 jccb(Assembler::notZero, not_null);
1064 // We are making a call. Increment the count for null receiver.
1065 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1066 jmp(skip_receiver_profile);
1067 bind(not_null);
1068 }
1070 // Record the receiver type.
1071 record_klass_in_profile(receiver, mdp, reg2, true);
1072 bind(skip_receiver_profile);
1074 // The method data pointer needs to be updated to reflect the new target.
1075 update_mdp_by_constant(mdp,
1076 in_bytes(VirtualCallData::
1077 virtual_call_data_size()));
1078 bind(profile_continue);
1079 }
1080 }
1083 void InterpreterMacroAssembler::record_klass_in_profile_helper(
1084 Register receiver, Register mdp,
1085 Register reg2, int start_row,
1086 Label& done, bool is_virtual_call) {
1087 if (TypeProfileWidth == 0) {
1088 if (is_virtual_call) {
1089 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1090 }
1091 return;
1092 }
1094 int last_row = VirtualCallData::row_limit() - 1;
1095 assert(start_row <= last_row, "must be work left to do");
1096 // Test this row for both the receiver and for null.
1097 // Take any of three different outcomes:
1098 // 1. found receiver => increment count and goto done
1099 // 2. found null => keep looking for case 1, maybe allocate this cell
1100 // 3. found something else => keep looking for cases 1 and 2
1101 // Case 3 is handled by a recursive call.
1102 for (int row = start_row; row <= last_row; row++) {
1103 Label next_test;
1104 bool test_for_null_also = (row == start_row);
1106 // See if the receiver is receiver[n].
1107 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row));
1108 test_mdp_data_at(mdp, recvr_offset, receiver,
1109 (test_for_null_also ? reg2 : noreg),
1110 next_test);
1111 // (Reg2 now contains the receiver from the CallData.)
1113 // The receiver is receiver[n]. Increment count[n].
1114 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row));
1115 increment_mdp_data_at(mdp, count_offset);
1116 jmp(done);
1117 bind(next_test);
1119 if (row == start_row) {
1120 Label found_null;
1121 // Failed the equality check on receiver[n]... Test for null.
1122 testptr(reg2, reg2);
1123 if (start_row == last_row) {
1124 // The only thing left to do is handle the null case.
1125 if (is_virtual_call) {
1126 jccb(Assembler::zero, found_null);
1127 // Receiver did not match any saved receiver and there is no empty row for it.
1128 // Increment total counter to indicate polymorphic case.
1129 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1130 jmp(done);
1131 bind(found_null);
1132 } else {
1133 jcc(Assembler::notZero, done);
1134 }
1135 break;
1136 }
1137 // Since null is rare, make it be the branch-taken case.
1138 jcc(Assembler::zero, found_null);
1140 // Put all the "Case 3" tests here.
1141 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call);
1143 // Found a null. Keep searching for a matching receiver,
1144 // but remember that this is an empty (unused) slot.
1145 bind(found_null);
1146 }
1147 }
1149 // In the fall-through case, we found no matching receiver, but we
1150 // observed the receiver[start_row] is NULL.
1152 // Fill in the receiver field and increment the count.
1153 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row));
1154 set_mdp_data_at(mdp, recvr_offset, receiver);
1155 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row));
1156 movptr(reg2, (int32_t)DataLayout::counter_increment);
1157 set_mdp_data_at(mdp, count_offset, reg2);
1158 if (start_row > 0) {
1159 jmp(done);
1160 }
1161 }
1163 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
1164 Register mdp, Register reg2,
1165 bool is_virtual_call) {
1166 assert(ProfileInterpreter, "must be profiling");
1167 Label done;
1169 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call);
1171 bind (done);
1172 }
1174 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) {
1175 if (ProfileInterpreter) {
1176 Label profile_continue;
1177 uint row;
1179 // If no method data exists, go to profile_continue.
1180 test_method_data_pointer(mdp, profile_continue);
1182 // Update the total ret count.
1183 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1185 for (row = 0; row < RetData::row_limit(); row++) {
1186 Label next_test;
1188 // See if return_bci is equal to bci[n]:
1189 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci,
1190 noreg, next_test);
1192 // return_bci is equal to bci[n]. Increment the count.
1193 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));
1195 // The method data pointer needs to be updated to reflect the new target.
1196 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row)));
1197 jmp(profile_continue);
1198 bind(next_test);
1199 }
1201 update_mdp_for_ret(return_bci);
1203 bind (profile_continue);
1204 }
1205 }
1208 void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
1209 if (ProfileInterpreter) {
1210 Label profile_continue;
1212 // If no method data exists, go to profile_continue.
1213 test_method_data_pointer(mdp, profile_continue);
1215 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant());
1217 // The method data pointer needs to be updated.
1218 int mdp_delta = in_bytes(BitData::bit_data_size());
1219 if (TypeProfileCasts) {
1220 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1221 }
1222 update_mdp_by_constant(mdp, mdp_delta);
1224 bind (profile_continue);
1225 }
1226 }
1229 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) {
1230 if (ProfileInterpreter && TypeProfileCasts) {
1231 Label profile_continue;
1233 // If no method data exists, go to profile_continue.
1234 test_method_data_pointer(mdp, profile_continue);
1236 int count_offset = in_bytes(CounterData::count_offset());
1237 // Back up the address, since we have already bumped the mdp.
1238 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size());
1240 // *Decrement* the counter. We expect to see zero or small negatives.
1241 increment_mdp_data_at(mdp, count_offset, true);
1243 bind (profile_continue);
1244 }
1245 }
1248 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2)
1249 {
1250 if (ProfileInterpreter) {
1251 Label profile_continue;
1253 // If no method data exists, go to profile_continue.
1254 test_method_data_pointer(mdp, profile_continue);
1256 // The method data pointer needs to be updated.
1257 int mdp_delta = in_bytes(BitData::bit_data_size());
1258 if (TypeProfileCasts) {
1259 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1261 // Record the object type.
1262 record_klass_in_profile(klass, mdp, reg2, false);
1263 assert(reg2 == rdi, "we know how to fix this blown reg");
1264 restore_locals(); // Restore EDI
1265 }
1266 update_mdp_by_constant(mdp, mdp_delta);
1268 bind(profile_continue);
1269 }
1270 }
1273 void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
1274 if (ProfileInterpreter) {
1275 Label profile_continue;
1277 // If no method data exists, go to profile_continue.
1278 test_method_data_pointer(mdp, profile_continue);
1280 // Update the default case count
1281 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset()));
1283 // The method data pointer needs to be updated.
1284 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset()));
1286 bind (profile_continue);
1287 }
1288 }
1291 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) {
1292 if (ProfileInterpreter) {
1293 Label profile_continue;
1295 // If no method data exists, go to profile_continue.
1296 test_method_data_pointer(mdp, profile_continue);
1298 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes()
1299 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size()));
1300 // index is positive and so should have correct value if this code were
1301 // used on 64bits
1302 imulptr(index, reg2);
1303 addptr(index, in_bytes(MultiBranchData::case_array_offset()));
1305 // Update the case count
1306 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset()));
1308 // The method data pointer needs to be updated.
1309 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset()));
1311 bind (profile_continue);
1312 }
1313 }
1315 #endif // !CC_INTERP
1319 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) {
1320 if (state == atos) MacroAssembler::verify_oop(reg);
1321 }
1324 #ifndef CC_INTERP
1325 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) {
1326 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth);
1327 }
1329 #endif /* CC_INTERP */
1332 void InterpreterMacroAssembler::notify_method_entry() {
1333 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1334 // track stack depth. If it is possible to enter interp_only_mode we add
1335 // the code to check if the event should be sent.
1336 if (JvmtiExport::can_post_interpreter_events()) {
1337 Label L;
1338 get_thread(rcx);
1339 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1340 testl(rcx,rcx);
1341 jcc(Assembler::zero, L);
1342 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry));
1343 bind(L);
1344 }
1346 {
1347 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1348 get_thread(rcx);
1349 get_method(rbx);
1350 call_VM_leaf(
1351 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx);
1352 }
1354 // RedefineClasses() tracing support for obsolete method entry
1355 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) {
1356 get_thread(rcx);
1357 get_method(rbx);
1358 call_VM_leaf(
1359 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
1360 rcx, rbx);
1361 }
1362 }
1365 void InterpreterMacroAssembler::notify_method_exit(
1366 TosState state, NotifyMethodExitMode mode) {
1367 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1368 // track stack depth. If it is possible to enter interp_only_mode we add
1369 // the code to check if the event should be sent.
1370 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) {
1371 Label L;
1372 // Note: frame::interpreter_frame_result has a dependency on how the
1373 // method result is saved across the call to post_method_exit. If this
1374 // is changed then the interpreter_frame_result implementation will
1375 // need to be updated too.
1377 // For c++ interpreter the result is always stored at a known location in the frame
1378 // template interpreter will leave it on the top of the stack.
1379 NOT_CC_INTERP(push(state);)
1380 get_thread(rcx);
1381 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1382 testl(rcx,rcx);
1383 jcc(Assembler::zero, L);
1384 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
1385 bind(L);
1386 NOT_CC_INTERP(pop(state);)
1387 }
1389 {
1390 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1391 NOT_CC_INTERP(push(state));
1392 get_thread(rbx);
1393 get_method(rcx);
1394 call_VM_leaf(
1395 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
1396 rbx, rcx);
1397 NOT_CC_INTERP(pop(state));
1398 }
1399 }
1401 // Jump if ((*counter_addr += increment) & mask) satisfies the condition.
1402 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr,
1403 int increment, int mask,
1404 Register scratch, bool preloaded,
1405 Condition cond, Label* where) {
1406 if (!preloaded) {
1407 movl(scratch, counter_addr);
1408 }
1409 incrementl(scratch, increment);
1410 movl(counter_addr, scratch);
1411 andl(scratch, mask);
1412 jcc(cond, *where);
1413 }