Tue, 23 Nov 2010 13:22:55 -0800
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
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 "precompiled.hpp"
26 #include "interp_masm_x86_32.hpp"
27 #include "interpreter/interpreter.hpp"
28 #include "interpreter/interpreterRuntime.hpp"
29 #include "oops/arrayOop.hpp"
30 #include "oops/markOop.hpp"
31 #include "oops/methodDataOop.hpp"
32 #include "oops/methodOop.hpp"
33 #include "prims/jvmtiExport.hpp"
34 #include "prims/jvmtiRedefineClassesTrace.hpp"
35 #include "prims/jvmtiThreadState.hpp"
36 #include "runtime/basicLock.hpp"
37 #include "runtime/biasedLocking.hpp"
38 #include "runtime/sharedRuntime.hpp"
39 #ifdef TARGET_OS_FAMILY_linux
40 # include "thread_linux.inline.hpp"
41 #endif
42 #ifdef TARGET_OS_FAMILY_solaris
43 # include "thread_solaris.inline.hpp"
44 #endif
45 #ifdef TARGET_OS_FAMILY_windows
46 # include "thread_windows.inline.hpp"
47 #endif
50 // Implementation of InterpreterMacroAssembler
51 #ifdef CC_INTERP
52 void InterpreterMacroAssembler::get_method(Register reg) {
53 movptr(reg, Address(rbp, -(sizeof(BytecodeInterpreter) + 2 * wordSize)));
54 movptr(reg, Address(reg, byte_offset_of(BytecodeInterpreter, _method)));
55 }
56 #endif // CC_INTERP
59 #ifndef CC_INTERP
60 void InterpreterMacroAssembler::call_VM_leaf_base(
61 address entry_point,
62 int number_of_arguments
63 ) {
64 // interpreter specific
65 //
66 // Note: No need to save/restore bcp & locals (rsi & rdi) pointer
67 // since these are callee saved registers and no blocking/
68 // GC can happen in leaf calls.
69 // Further Note: DO NOT save/restore bcp/locals. If a caller has
70 // already saved them so that it can use rsi/rdi as temporaries
71 // then a save/restore here will DESTROY the copy the caller
72 // saved! There used to be a save_bcp() that only happened in
73 // the ASSERT path (no restore_bcp). Which caused bizarre failures
74 // when jvm built with ASSERTs.
75 #ifdef ASSERT
76 { Label L;
77 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
78 jcc(Assembler::equal, L);
79 stop("InterpreterMacroAssembler::call_VM_leaf_base: last_sp != NULL");
80 bind(L);
81 }
82 #endif
83 // super call
84 MacroAssembler::call_VM_leaf_base(entry_point, number_of_arguments);
85 // interpreter specific
87 // Used to ASSERT that rsi/rdi were equal to frame's bcp/locals
88 // but since they may not have been saved (and we don't want to
89 // save them here (see note above) the assert is invalid.
90 }
93 void InterpreterMacroAssembler::call_VM_base(
94 Register oop_result,
95 Register java_thread,
96 Register last_java_sp,
97 address entry_point,
98 int number_of_arguments,
99 bool check_exceptions
100 ) {
101 #ifdef ASSERT
102 { Label L;
103 cmpptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
104 jcc(Assembler::equal, L);
105 stop("InterpreterMacroAssembler::call_VM_base: last_sp != NULL");
106 bind(L);
107 }
108 #endif /* ASSERT */
109 // interpreter specific
110 //
111 // Note: Could avoid restoring locals ptr (callee saved) - however doesn't
112 // really make a difference for these runtime calls, since they are
113 // slow anyway. Btw., bcp must be saved/restored since it may change
114 // due to GC.
115 assert(java_thread == noreg , "not expecting a precomputed java thread");
116 save_bcp();
117 // super call
118 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exceptions);
119 // interpreter specific
120 restore_bcp();
121 restore_locals();
122 }
125 void InterpreterMacroAssembler::check_and_handle_popframe(Register java_thread) {
126 if (JvmtiExport::can_pop_frame()) {
127 Label L;
128 // Initiate popframe handling only if it is not already being processed. If the flag
129 // has the popframe_processing bit set, it means that this code is called *during* popframe
130 // handling - we don't want to reenter.
131 Register pop_cond = java_thread; // Not clear if any other register is available...
132 movl(pop_cond, Address(java_thread, JavaThread::popframe_condition_offset()));
133 testl(pop_cond, JavaThread::popframe_pending_bit);
134 jcc(Assembler::zero, L);
135 testl(pop_cond, JavaThread::popframe_processing_bit);
136 jcc(Assembler::notZero, L);
137 // Call Interpreter::remove_activation_preserving_args_entry() to get the
138 // address of the same-named entrypoint in the generated interpreter code.
139 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry));
140 jmp(rax);
141 bind(L);
142 get_thread(java_thread);
143 }
144 }
147 void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
148 get_thread(rcx);
149 movl(rcx, Address(rcx, JavaThread::jvmti_thread_state_offset()));
150 const Address tos_addr (rcx, JvmtiThreadState::earlyret_tos_offset());
151 const Address oop_addr (rcx, JvmtiThreadState::earlyret_oop_offset());
152 const Address val_addr (rcx, JvmtiThreadState::earlyret_value_offset());
153 const Address val_addr1(rcx, JvmtiThreadState::earlyret_value_offset()
154 + in_ByteSize(wordSize));
155 switch (state) {
156 case atos: movptr(rax, oop_addr);
157 movptr(oop_addr, NULL_WORD);
158 verify_oop(rax, state); break;
159 case ltos:
160 movl(rdx, val_addr1); // fall through
161 case btos: // fall through
162 case ctos: // fall through
163 case stos: // fall through
164 case itos: movl(rax, val_addr); break;
165 case ftos: fld_s(val_addr); break;
166 case dtos: fld_d(val_addr); break;
167 case vtos: /* nothing to do */ break;
168 default : ShouldNotReachHere();
169 }
170 // Clean up tos value in the thread object
171 movl(tos_addr, (int32_t) ilgl);
172 movptr(val_addr, NULL_WORD);
173 NOT_LP64(movptr(val_addr1, NULL_WORD));
174 }
177 void InterpreterMacroAssembler::check_and_handle_earlyret(Register java_thread) {
178 if (JvmtiExport::can_force_early_return()) {
179 Label L;
180 Register tmp = java_thread;
181 movptr(tmp, Address(tmp, JavaThread::jvmti_thread_state_offset()));
182 testptr(tmp, tmp);
183 jcc(Assembler::zero, L); // if (thread->jvmti_thread_state() == NULL) exit;
185 // Initiate earlyret handling only if it is not already being processed.
186 // If the flag has the earlyret_processing bit set, it means that this code
187 // is called *during* earlyret handling - we don't want to reenter.
188 movl(tmp, Address(tmp, JvmtiThreadState::earlyret_state_offset()));
189 cmpl(tmp, JvmtiThreadState::earlyret_pending);
190 jcc(Assembler::notEqual, L);
192 // Call Interpreter::remove_activation_early_entry() to get the address of the
193 // same-named entrypoint in the generated interpreter code.
194 get_thread(java_thread);
195 movptr(tmp, Address(java_thread, JavaThread::jvmti_thread_state_offset()));
196 pushl(Address(tmp, JvmtiThreadState::earlyret_tos_offset()));
197 call_VM_leaf(CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), 1);
198 jmp(rax);
199 bind(L);
200 get_thread(java_thread);
201 }
202 }
205 void InterpreterMacroAssembler::get_unsigned_2_byte_index_at_bcp(Register reg, int bcp_offset) {
206 assert(bcp_offset >= 0, "bcp is still pointing to start of bytecode");
207 movl(reg, Address(rsi, bcp_offset));
208 bswapl(reg);
209 shrl(reg, 16);
210 }
213 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register reg, int bcp_offset, size_t index_size) {
214 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
215 if (index_size == sizeof(u2)) {
216 load_unsigned_short(reg, Address(rsi, bcp_offset));
217 } else if (index_size == sizeof(u4)) {
218 assert(EnableInvokeDynamic, "giant index used only for EnableInvokeDynamic");
219 movl(reg, Address(rsi, bcp_offset));
220 // Check if the secondary index definition is still ~x, otherwise
221 // we have to change the following assembler code to calculate the
222 // plain index.
223 assert(constantPoolCacheOopDesc::decode_secondary_index(~123) == 123, "else change next line");
224 notl(reg); // convert to plain index
225 } else if (index_size == sizeof(u1)) {
226 assert(EnableMethodHandles, "tiny index used only for EnableMethodHandles");
227 load_unsigned_byte(reg, Address(rsi, bcp_offset));
228 } else {
229 ShouldNotReachHere();
230 }
231 }
234 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register index,
235 int bcp_offset, size_t index_size) {
236 assert(cache != index, "must use different registers");
237 get_cache_index_at_bcp(index, bcp_offset, index_size);
238 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
239 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
240 shlptr(index, 2); // convert from field index to ConstantPoolCacheEntry index
241 }
244 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
245 int bcp_offset, size_t index_size) {
246 assert(cache != tmp, "must use different register");
247 get_cache_index_at_bcp(tmp, bcp_offset, index_size);
248 assert(sizeof(ConstantPoolCacheEntry) == 4*wordSize, "adjust code below");
249 // convert from field index to ConstantPoolCacheEntry index
250 // and from word offset to byte offset
251 shll(tmp, 2 + LogBytesPerWord);
252 movptr(cache, Address(rbp, frame::interpreter_frame_cache_offset * wordSize));
253 // skip past the header
254 addptr(cache, in_bytes(constantPoolCacheOopDesc::base_offset()));
255 addptr(cache, tmp); // construct pointer to cache entry
256 }
259 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
260 // a subtype of super_klass. EAX holds the super_klass. Blows ECX.
261 // Resets EDI to locals. Register sub_klass cannot be any of the above.
262 void InterpreterMacroAssembler::gen_subtype_check( Register Rsub_klass, Label &ok_is_subtype ) {
263 assert( Rsub_klass != rax, "rax, holds superklass" );
264 assert( Rsub_klass != rcx, "used as a temp" );
265 assert( Rsub_klass != rdi, "used as a temp, restored from locals" );
267 // Profile the not-null value's klass.
268 profile_typecheck(rcx, Rsub_klass, rdi); // blows rcx, reloads rdi
270 // Do the check.
271 check_klass_subtype(Rsub_klass, rax, rcx, ok_is_subtype); // blows rcx
273 // Profile the failure of the check.
274 profile_typecheck_failed(rcx); // blows rcx
275 }
277 void InterpreterMacroAssembler::f2ieee() {
278 if (IEEEPrecision) {
279 fstp_s(Address(rsp, 0));
280 fld_s(Address(rsp, 0));
281 }
282 }
285 void InterpreterMacroAssembler::d2ieee() {
286 if (IEEEPrecision) {
287 fstp_d(Address(rsp, 0));
288 fld_d(Address(rsp, 0));
289 }
290 }
292 // Java Expression Stack
294 void InterpreterMacroAssembler::pop_ptr(Register r) {
295 pop(r);
296 }
298 void InterpreterMacroAssembler::pop_i(Register r) {
299 pop(r);
300 }
302 void InterpreterMacroAssembler::pop_l(Register lo, Register hi) {
303 pop(lo);
304 pop(hi);
305 }
307 void InterpreterMacroAssembler::pop_f() {
308 fld_s(Address(rsp, 0));
309 addptr(rsp, 1 * wordSize);
310 }
312 void InterpreterMacroAssembler::pop_d() {
313 fld_d(Address(rsp, 0));
314 addptr(rsp, 2 * wordSize);
315 }
318 void InterpreterMacroAssembler::pop(TosState state) {
319 switch (state) {
320 case atos: pop_ptr(rax); break;
321 case btos: // fall through
322 case ctos: // fall through
323 case stos: // fall through
324 case itos: pop_i(rax); break;
325 case ltos: pop_l(rax, rdx); break;
326 case ftos: pop_f(); break;
327 case dtos: pop_d(); break;
328 case vtos: /* nothing to do */ break;
329 default : ShouldNotReachHere();
330 }
331 verify_oop(rax, state);
332 }
334 void InterpreterMacroAssembler::push_ptr(Register r) {
335 push(r);
336 }
338 void InterpreterMacroAssembler::push_i(Register r) {
339 push(r);
340 }
342 void InterpreterMacroAssembler::push_l(Register lo, Register hi) {
343 push(hi);
344 push(lo);
345 }
347 void InterpreterMacroAssembler::push_f() {
348 // Do not schedule for no AGI! Never write beyond rsp!
349 subptr(rsp, 1 * wordSize);
350 fstp_s(Address(rsp, 0));
351 }
353 void InterpreterMacroAssembler::push_d(Register r) {
354 // Do not schedule for no AGI! Never write beyond rsp!
355 subptr(rsp, 2 * wordSize);
356 fstp_d(Address(rsp, 0));
357 }
360 void InterpreterMacroAssembler::push(TosState state) {
361 verify_oop(rax, state);
362 switch (state) {
363 case atos: push_ptr(rax); break;
364 case btos: // fall through
365 case ctos: // fall through
366 case stos: // fall through
367 case itos: push_i(rax); break;
368 case ltos: push_l(rax, rdx); break;
369 case ftos: push_f(); break;
370 case dtos: push_d(rax); break;
371 case vtos: /* nothing to do */ break;
372 default : ShouldNotReachHere();
373 }
374 }
377 // Helpers for swap and dup
378 void InterpreterMacroAssembler::load_ptr(int n, Register val) {
379 movptr(val, Address(rsp, Interpreter::expr_offset_in_bytes(n)));
380 }
382 void InterpreterMacroAssembler::store_ptr(int n, Register val) {
383 movptr(Address(rsp, Interpreter::expr_offset_in_bytes(n)), val);
384 }
386 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point) {
387 MacroAssembler::call_VM_leaf_base(entry_point, 0);
388 }
391 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1) {
392 push(arg_1);
393 MacroAssembler::call_VM_leaf_base(entry_point, 1);
394 }
397 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2) {
398 push(arg_2);
399 push(arg_1);
400 MacroAssembler::call_VM_leaf_base(entry_point, 2);
401 }
404 void InterpreterMacroAssembler::super_call_VM_leaf(address entry_point, Register arg_1, Register arg_2, Register arg_3) {
405 push(arg_3);
406 push(arg_2);
407 push(arg_1);
408 MacroAssembler::call_VM_leaf_base(entry_point, 3);
409 }
412 void InterpreterMacroAssembler::prepare_to_jump_from_interpreted() {
413 // set sender sp
414 lea(rsi, Address(rsp, wordSize));
415 // record last_sp
416 movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), rsi);
417 }
420 // Jump to from_interpreted entry of a call unless single stepping is possible
421 // in this thread in which case we must call the i2i entry
422 void InterpreterMacroAssembler::jump_from_interpreted(Register method, Register temp) {
423 prepare_to_jump_from_interpreted();
425 if (JvmtiExport::can_post_interpreter_events()) {
426 Label run_compiled_code;
427 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
428 // compiled code in threads for which the event is enabled. Check here for
429 // interp_only_mode if these events CAN be enabled.
430 get_thread(temp);
431 // interp_only is an int, on little endian it is sufficient to test the byte only
432 // Is a cmpl faster (ce
433 cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0);
434 jcc(Assembler::zero, run_compiled_code);
435 jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
436 bind(run_compiled_code);
437 }
439 jmp(Address(method, methodOopDesc::from_interpreted_offset()));
441 }
444 // The following two routines provide a hook so that an implementation
445 // can schedule the dispatch in two parts. Intel does not do this.
446 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int step) {
447 // Nothing Intel-specific to be done here.
448 }
450 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int step) {
451 dispatch_next(state, step);
452 }
454 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table,
455 bool verifyoop) {
456 verify_FPU(1, state);
457 if (VerifyActivationFrameSize) {
458 Label L;
459 mov(rcx, rbp);
460 subptr(rcx, rsp);
461 int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize;
462 cmpptr(rcx, min_frame_size);
463 jcc(Assembler::greaterEqual, L);
464 stop("broken stack frame");
465 bind(L);
466 }
467 if (verifyoop) verify_oop(rax, state);
468 Address index(noreg, rbx, Address::times_ptr);
469 ExternalAddress tbl((address)table);
470 ArrayAddress dispatch(tbl, index);
471 jump(dispatch);
472 }
475 void InterpreterMacroAssembler::dispatch_only(TosState state) {
476 dispatch_base(state, Interpreter::dispatch_table(state));
477 }
480 void InterpreterMacroAssembler::dispatch_only_normal(TosState state) {
481 dispatch_base(state, Interpreter::normal_table(state));
482 }
484 void InterpreterMacroAssembler::dispatch_only_noverify(TosState state) {
485 dispatch_base(state, Interpreter::normal_table(state), false);
486 }
489 void InterpreterMacroAssembler::dispatch_next(TosState state, int step) {
490 // load next bytecode (load before advancing rsi to prevent AGI)
491 load_unsigned_byte(rbx, Address(rsi, step));
492 // advance rsi
493 increment(rsi, step);
494 dispatch_base(state, Interpreter::dispatch_table(state));
495 }
498 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
499 // load current bytecode
500 load_unsigned_byte(rbx, Address(rsi, 0));
501 dispatch_base(state, table);
502 }
504 // remove activation
505 //
506 // Unlock the receiver if this is a synchronized method.
507 // Unlock any Java monitors from syncronized blocks.
508 // Remove the activation from the stack.
509 //
510 // If there are locked Java monitors
511 // If throw_monitor_exception
512 // throws IllegalMonitorStateException
513 // Else if install_monitor_exception
514 // installs IllegalMonitorStateException
515 // Else
516 // no error processing
517 void InterpreterMacroAssembler::remove_activation(TosState state, Register ret_addr,
518 bool throw_monitor_exception,
519 bool install_monitor_exception,
520 bool notify_jvmdi) {
521 // Note: Registers rax, rdx and FPU ST(0) may be in use for the result
522 // check if synchronized method
523 Label unlocked, unlock, no_unlock;
525 get_thread(rcx);
526 const Address do_not_unlock_if_synchronized(rcx,
527 in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
529 movbool(rbx, do_not_unlock_if_synchronized);
530 mov(rdi,rbx);
531 movbool(do_not_unlock_if_synchronized, false); // reset the flag
533 movptr(rbx, Address(rbp, frame::interpreter_frame_method_offset * wordSize)); // get method access flags
534 movl(rcx, Address(rbx, methodOopDesc::access_flags_offset()));
536 testl(rcx, JVM_ACC_SYNCHRONIZED);
537 jcc(Assembler::zero, unlocked);
539 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
540 // is set.
541 mov(rcx,rdi);
542 testbool(rcx);
543 jcc(Assembler::notZero, no_unlock);
545 // unlock monitor
546 push(state); // save result
548 // BasicObjectLock will be first in list, since this is a synchronized method. However, need
549 // to check that the object has not been unlocked by an explicit monitorexit bytecode.
550 const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock));
551 lea (rdx, monitor); // address of first monitor
553 movptr (rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes()));
554 testptr(rax, rax);
555 jcc (Assembler::notZero, unlock);
557 pop(state);
558 if (throw_monitor_exception) {
559 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
561 // Entry already unlocked, need to throw exception
562 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
563 should_not_reach_here();
564 } else {
565 // Monitor already unlocked during a stack unroll.
566 // If requested, install an illegal_monitor_state_exception.
567 // Continue with stack unrolling.
568 if (install_monitor_exception) {
569 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
570 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
571 }
572 jmp(unlocked);
573 }
575 bind(unlock);
576 unlock_object(rdx);
577 pop(state);
579 // Check that for block-structured locking (i.e., that all locked objects has been unlocked)
580 bind(unlocked);
582 // rax, rdx: Might contain return value
584 // Check that all monitors are unlocked
585 {
586 Label loop, exception, entry, restart;
587 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
588 const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
589 const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
591 bind(restart);
592 movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry
593 lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
594 jmp(entry);
596 // Entry already locked, need to throw exception
597 bind(exception);
599 if (throw_monitor_exception) {
600 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
602 // Throw exception
603 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
604 should_not_reach_here();
605 } else {
606 // Stack unrolling. Unlock object and install illegal_monitor_exception
607 // Unlock does not block, so don't have to worry about the frame
609 push(state);
610 mov(rdx, rcx);
611 unlock_object(rdx);
612 pop(state);
614 if (install_monitor_exception) {
615 empty_FPU_stack(); // remove possible return value from FPU-stack, otherwise stack could overflow
616 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
617 }
619 jmp(restart);
620 }
622 bind(loop);
623 cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used
624 jcc(Assembler::notEqual, exception);
626 addptr(rcx, entry_size); // otherwise advance to next entry
627 bind(entry);
628 cmpptr(rcx, rbx); // check if bottom reached
629 jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
630 }
632 bind(no_unlock);
634 // jvmti support
635 if (notify_jvmdi) {
636 notify_method_exit(state, NotifyJVMTI); // preserve TOSCA
637 } else {
638 notify_method_exit(state, SkipNotifyJVMTI); // preserve TOSCA
639 }
641 // remove activation
642 movptr(rbx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
643 leave(); // remove frame anchor
644 pop(ret_addr); // get return address
645 mov(rsp, rbx); // set sp to sender sp
646 if (UseSSE) {
647 // float and double are returned in xmm register in SSE-mode
648 if (state == ftos && UseSSE >= 1) {
649 subptr(rsp, wordSize);
650 fstp_s(Address(rsp, 0));
651 movflt(xmm0, Address(rsp, 0));
652 addptr(rsp, wordSize);
653 } else if (state == dtos && UseSSE >= 2) {
654 subptr(rsp, 2*wordSize);
655 fstp_d(Address(rsp, 0));
656 movdbl(xmm0, Address(rsp, 0));
657 addptr(rsp, 2*wordSize);
658 }
659 }
660 }
662 #endif /* !CC_INTERP */
665 // Lock object
666 //
667 // Argument: rdx : Points to BasicObjectLock to be used for locking. Must
668 // be initialized with object to lock
669 void InterpreterMacroAssembler::lock_object(Register lock_reg) {
670 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
672 if (UseHeavyMonitors) {
673 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
674 } else {
676 Label done;
678 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
679 const Register obj_reg = rcx; // Will contain the oop
681 const int obj_offset = BasicObjectLock::obj_offset_in_bytes();
682 const int lock_offset = BasicObjectLock::lock_offset_in_bytes ();
683 const int mark_offset = lock_offset + BasicLock::displaced_header_offset_in_bytes();
685 Label slow_case;
687 // Load object pointer into obj_reg %rcx
688 movptr(obj_reg, Address(lock_reg, obj_offset));
690 if (UseBiasedLocking) {
691 // Note: we use noreg for the temporary register since it's hard
692 // to come up with a free register on all incoming code paths
693 biased_locking_enter(lock_reg, obj_reg, swap_reg, noreg, false, done, &slow_case);
694 }
696 // Load immediate 1 into swap_reg %rax,
697 movptr(swap_reg, (int32_t)1);
699 // Load (object->mark() | 1) into swap_reg %rax,
700 orptr(swap_reg, Address(obj_reg, 0));
702 // Save (object->mark() | 1) into BasicLock's displaced header
703 movptr(Address(lock_reg, mark_offset), swap_reg);
705 assert(lock_offset == 0, "displached header must be first word in BasicObjectLock");
706 if (os::is_MP()) {
707 lock();
708 }
709 cmpxchgptr(lock_reg, Address(obj_reg, 0));
710 if (PrintBiasedLockingStatistics) {
711 cond_inc32(Assembler::zero,
712 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
713 }
714 jcc(Assembler::zero, done);
716 // Test if the oopMark is an obvious stack pointer, i.e.,
717 // 1) (mark & 3) == 0, and
718 // 2) rsp <= mark < mark + os::pagesize()
719 //
720 // These 3 tests can be done by evaluating the following
721 // expression: ((mark - rsp) & (3 - os::vm_page_size())),
722 // assuming both stack pointer and pagesize have their
723 // least significant 2 bits clear.
724 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg
725 subptr(swap_reg, rsp);
726 andptr(swap_reg, 3 - os::vm_page_size());
728 // Save the test result, for recursive case, the result is zero
729 movptr(Address(lock_reg, mark_offset), swap_reg);
731 if (PrintBiasedLockingStatistics) {
732 cond_inc32(Assembler::zero,
733 ExternalAddress((address) BiasedLocking::fast_path_entry_count_addr()));
734 }
735 jcc(Assembler::zero, done);
737 bind(slow_case);
739 // Call the runtime routine for slow case
740 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
742 bind(done);
743 }
744 }
747 // Unlocks an object. Used in monitorexit bytecode and remove_activation.
748 //
749 // Argument: rdx : Points to BasicObjectLock structure for lock
750 // Throw an IllegalMonitorException if object is not locked by current thread
751 //
752 // Uses: rax, rbx, rcx, rdx
753 void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
754 assert(lock_reg == rdx, "The argument is only for looks. It must be rdx");
756 if (UseHeavyMonitors) {
757 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
758 } else {
759 Label done;
761 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction
762 const Register header_reg = rbx; // Will contain the old oopMark
763 const Register obj_reg = rcx; // Will contain the oop
765 save_bcp(); // Save in case of exception
767 // Convert from BasicObjectLock structure to object and BasicLock structure
768 // Store the BasicLock address into %rax,
769 lea(swap_reg, Address(lock_reg, BasicObjectLock::lock_offset_in_bytes()));
771 // Load oop into obj_reg(%rcx)
772 movptr(obj_reg, Address(lock_reg, BasicObjectLock::obj_offset_in_bytes ()));
774 // Free entry
775 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), NULL_WORD);
777 if (UseBiasedLocking) {
778 biased_locking_exit(obj_reg, header_reg, done);
779 }
781 // Load the old header from BasicLock structure
782 movptr(header_reg, Address(swap_reg, BasicLock::displaced_header_offset_in_bytes()));
784 // Test for recursion
785 testptr(header_reg, header_reg);
787 // zero for recursive case
788 jcc(Assembler::zero, done);
790 // Atomic swap back the old header
791 if (os::is_MP()) lock();
792 cmpxchgptr(header_reg, Address(obj_reg, 0));
794 // zero for recursive case
795 jcc(Assembler::zero, done);
797 // Call the runtime routine for slow case.
798 movptr(Address(lock_reg, BasicObjectLock::obj_offset_in_bytes()), obj_reg); // restore obj
799 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
801 bind(done);
803 restore_bcp();
804 }
805 }
808 #ifndef CC_INTERP
810 // Test ImethodDataPtr. If it is null, continue at the specified label
811 void InterpreterMacroAssembler::test_method_data_pointer(Register mdp, Label& zero_continue) {
812 assert(ProfileInterpreter, "must be profiling interpreter");
813 movptr(mdp, Address(rbp, frame::interpreter_frame_mdx_offset * wordSize));
814 testptr(mdp, mdp);
815 jcc(Assembler::zero, zero_continue);
816 }
819 // Set the method data pointer for the current bcp.
820 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
821 assert(ProfileInterpreter, "must be profiling interpreter");
822 Label zero_continue;
823 push(rax);
824 push(rbx);
826 get_method(rbx);
827 // Test MDO to avoid the call if it is NULL.
828 movptr(rax, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
829 testptr(rax, rax);
830 jcc(Assembler::zero, zero_continue);
832 // rbx,: method
833 // rsi: bcp
834 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), rbx, rsi);
835 // rax,: mdi
837 movptr(rbx, Address(rbx, in_bytes(methodOopDesc::method_data_offset())));
838 testptr(rbx, rbx);
839 jcc(Assembler::zero, zero_continue);
840 addptr(rbx, in_bytes(methodDataOopDesc::data_offset()));
841 addptr(rbx, rax);
842 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), rbx);
844 bind(zero_continue);
845 pop(rbx);
846 pop(rax);
847 }
849 void InterpreterMacroAssembler::verify_method_data_pointer() {
850 assert(ProfileInterpreter, "must be profiling interpreter");
851 #ifdef ASSERT
852 Label verify_continue;
853 push(rax);
854 push(rbx);
855 push(rcx);
856 push(rdx);
857 test_method_data_pointer(rcx, verify_continue); // If mdp is zero, continue
858 get_method(rbx);
860 // If the mdp is valid, it will point to a DataLayout header which is
861 // consistent with the bcp. The converse is highly probable also.
862 load_unsigned_short(rdx, Address(rcx, in_bytes(DataLayout::bci_offset())));
863 addptr(rdx, Address(rbx, methodOopDesc::const_offset()));
864 lea(rdx, Address(rdx, constMethodOopDesc::codes_offset()));
865 cmpptr(rdx, rsi);
866 jcc(Assembler::equal, verify_continue);
867 // rbx,: method
868 // rsi: bcp
869 // rcx: mdp
870 call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), rbx, rsi, rcx);
871 bind(verify_continue);
872 pop(rdx);
873 pop(rcx);
874 pop(rbx);
875 pop(rax);
876 #endif // ASSERT
877 }
880 void InterpreterMacroAssembler::set_mdp_data_at(Register mdp_in, int constant, Register value) {
881 // %%% this seems to be used to store counter data which is surely 32bits
882 // however 64bit side stores 64 bits which seems wrong
883 assert(ProfileInterpreter, "must be profiling interpreter");
884 Address data(mdp_in, constant);
885 movptr(data, value);
886 }
889 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
890 int constant,
891 bool decrement) {
892 // Counter address
893 Address data(mdp_in, constant);
895 increment_mdp_data_at(data, decrement);
896 }
899 void InterpreterMacroAssembler::increment_mdp_data_at(Address data,
900 bool decrement) {
902 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
903 assert(ProfileInterpreter, "must be profiling interpreter");
905 // %%% 64bit treats this as 64 bit which seems unlikely
906 if (decrement) {
907 // Decrement the register. Set condition codes.
908 addl(data, -DataLayout::counter_increment);
909 // If the decrement causes the counter to overflow, stay negative
910 Label L;
911 jcc(Assembler::negative, L);
912 addl(data, DataLayout::counter_increment);
913 bind(L);
914 } else {
915 assert(DataLayout::counter_increment == 1,
916 "flow-free idiom only works with 1");
917 // Increment the register. Set carry flag.
918 addl(data, DataLayout::counter_increment);
919 // If the increment causes the counter to overflow, pull back by 1.
920 sbbl(data, 0);
921 }
922 }
925 void InterpreterMacroAssembler::increment_mdp_data_at(Register mdp_in,
926 Register reg,
927 int constant,
928 bool decrement) {
929 Address data(mdp_in, reg, Address::times_1, constant);
931 increment_mdp_data_at(data, decrement);
932 }
935 void InterpreterMacroAssembler::set_mdp_flag_at(Register mdp_in, int flag_byte_constant) {
936 assert(ProfileInterpreter, "must be profiling interpreter");
937 int header_offset = in_bytes(DataLayout::header_offset());
938 int header_bits = DataLayout::flag_mask_to_header_mask(flag_byte_constant);
939 // Set the flag
940 orl(Address(mdp_in, header_offset), header_bits);
941 }
945 void InterpreterMacroAssembler::test_mdp_data_at(Register mdp_in,
946 int offset,
947 Register value,
948 Register test_value_out,
949 Label& not_equal_continue) {
950 assert(ProfileInterpreter, "must be profiling interpreter");
951 if (test_value_out == noreg) {
952 cmpptr(value, Address(mdp_in, offset));
953 } else {
954 // Put the test value into a register, so caller can use it:
955 movptr(test_value_out, Address(mdp_in, offset));
956 cmpptr(test_value_out, value);
957 }
958 jcc(Assembler::notEqual, not_equal_continue);
959 }
962 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, int offset_of_disp) {
963 assert(ProfileInterpreter, "must be profiling interpreter");
964 Address disp_address(mdp_in, offset_of_disp);
965 addptr(mdp_in,disp_address);
966 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
967 }
970 void InterpreterMacroAssembler::update_mdp_by_offset(Register mdp_in, Register reg, int offset_of_disp) {
971 assert(ProfileInterpreter, "must be profiling interpreter");
972 Address disp_address(mdp_in, reg, Address::times_1, offset_of_disp);
973 addptr(mdp_in, disp_address);
974 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
975 }
978 void InterpreterMacroAssembler::update_mdp_by_constant(Register mdp_in, int constant) {
979 assert(ProfileInterpreter, "must be profiling interpreter");
980 addptr(mdp_in, constant);
981 movptr(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), mdp_in);
982 }
985 void InterpreterMacroAssembler::update_mdp_for_ret(Register return_bci) {
986 assert(ProfileInterpreter, "must be profiling interpreter");
987 push(return_bci); // save/restore across call_VM
988 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci);
989 pop(return_bci);
990 }
993 void InterpreterMacroAssembler::profile_taken_branch(Register mdp, Register bumped_count) {
994 if (ProfileInterpreter) {
995 Label profile_continue;
997 // If no method data exists, go to profile_continue.
998 // Otherwise, assign to mdp
999 test_method_data_pointer(mdp, profile_continue);
1001 // We are taking a branch. Increment the taken count.
1002 // We inline increment_mdp_data_at to return bumped_count in a register
1003 //increment_mdp_data_at(mdp, in_bytes(JumpData::taken_offset()));
1004 Address data(mdp, in_bytes(JumpData::taken_offset()));
1006 // %%% 64bit treats these cells as 64 bit but they seem to be 32 bit
1007 movl(bumped_count,data);
1008 assert( DataLayout::counter_increment==1, "flow-free idiom only works with 1" );
1009 addl(bumped_count, DataLayout::counter_increment);
1010 sbbl(bumped_count, 0);
1011 movl(data,bumped_count); // Store back out
1013 // The method data pointer needs to be updated to reflect the new target.
1014 update_mdp_by_offset(mdp, in_bytes(JumpData::displacement_offset()));
1015 bind (profile_continue);
1016 }
1017 }
1020 void InterpreterMacroAssembler::profile_not_taken_branch(Register mdp) {
1021 if (ProfileInterpreter) {
1022 Label profile_continue;
1024 // If no method data exists, go to profile_continue.
1025 test_method_data_pointer(mdp, profile_continue);
1027 // We are taking a branch. Increment the not taken count.
1028 increment_mdp_data_at(mdp, in_bytes(BranchData::not_taken_offset()));
1030 // The method data pointer needs to be updated to correspond to the next bytecode
1031 update_mdp_by_constant(mdp, in_bytes(BranchData::branch_data_size()));
1032 bind (profile_continue);
1033 }
1034 }
1037 void InterpreterMacroAssembler::profile_call(Register mdp) {
1038 if (ProfileInterpreter) {
1039 Label profile_continue;
1041 // If no method data exists, go to profile_continue.
1042 test_method_data_pointer(mdp, profile_continue);
1044 // We are making a call. Increment the count.
1045 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1047 // The method data pointer needs to be updated to reflect the new target.
1048 update_mdp_by_constant(mdp, in_bytes(CounterData::counter_data_size()));
1049 bind (profile_continue);
1050 }
1051 }
1054 void InterpreterMacroAssembler::profile_final_call(Register mdp) {
1055 if (ProfileInterpreter) {
1056 Label profile_continue;
1058 // If no method data exists, go to profile_continue.
1059 test_method_data_pointer(mdp, profile_continue);
1061 // We are making a call. Increment the count.
1062 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1064 // The method data pointer needs to be updated to reflect the new target.
1065 update_mdp_by_constant(mdp, in_bytes(VirtualCallData::virtual_call_data_size()));
1066 bind (profile_continue);
1067 }
1068 }
1071 void InterpreterMacroAssembler::profile_virtual_call(Register receiver, Register mdp,
1072 Register reg2,
1073 bool receiver_can_be_null) {
1074 if (ProfileInterpreter) {
1075 Label profile_continue;
1077 // If no method data exists, go to profile_continue.
1078 test_method_data_pointer(mdp, profile_continue);
1080 Label skip_receiver_profile;
1081 if (receiver_can_be_null) {
1082 Label not_null;
1083 testptr(receiver, receiver);
1084 jccb(Assembler::notZero, not_null);
1085 // We are making a call. Increment the count for null receiver.
1086 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1087 jmp(skip_receiver_profile);
1088 bind(not_null);
1089 }
1091 // Record the receiver type.
1092 record_klass_in_profile(receiver, mdp, reg2, true);
1093 bind(skip_receiver_profile);
1095 // The method data pointer needs to be updated to reflect the new target.
1096 update_mdp_by_constant(mdp,
1097 in_bytes(VirtualCallData::
1098 virtual_call_data_size()));
1099 bind(profile_continue);
1100 }
1101 }
1104 void InterpreterMacroAssembler::record_klass_in_profile_helper(
1105 Register receiver, Register mdp,
1106 Register reg2, int start_row,
1107 Label& done, bool is_virtual_call) {
1108 if (TypeProfileWidth == 0) {
1109 if (is_virtual_call) {
1110 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1111 }
1112 return;
1113 }
1115 int last_row = VirtualCallData::row_limit() - 1;
1116 assert(start_row <= last_row, "must be work left to do");
1117 // Test this row for both the receiver and for null.
1118 // Take any of three different outcomes:
1119 // 1. found receiver => increment count and goto done
1120 // 2. found null => keep looking for case 1, maybe allocate this cell
1121 // 3. found something else => keep looking for cases 1 and 2
1122 // Case 3 is handled by a recursive call.
1123 for (int row = start_row; row <= last_row; row++) {
1124 Label next_test;
1125 bool test_for_null_also = (row == start_row);
1127 // See if the receiver is receiver[n].
1128 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(row));
1129 test_mdp_data_at(mdp, recvr_offset, receiver,
1130 (test_for_null_also ? reg2 : noreg),
1131 next_test);
1132 // (Reg2 now contains the receiver from the CallData.)
1134 // The receiver is receiver[n]. Increment count[n].
1135 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(row));
1136 increment_mdp_data_at(mdp, count_offset);
1137 jmp(done);
1138 bind(next_test);
1140 if (row == start_row) {
1141 Label found_null;
1142 // Failed the equality check on receiver[n]... Test for null.
1143 testptr(reg2, reg2);
1144 if (start_row == last_row) {
1145 // The only thing left to do is handle the null case.
1146 if (is_virtual_call) {
1147 jccb(Assembler::zero, found_null);
1148 // Receiver did not match any saved receiver and there is no empty row for it.
1149 // Increment total counter to indicate polymorphic case.
1150 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1151 jmp(done);
1152 bind(found_null);
1153 } else {
1154 jcc(Assembler::notZero, done);
1155 }
1156 break;
1157 }
1158 // Since null is rare, make it be the branch-taken case.
1159 jcc(Assembler::zero, found_null);
1161 // Put all the "Case 3" tests here.
1162 record_klass_in_profile_helper(receiver, mdp, reg2, start_row + 1, done, is_virtual_call);
1164 // Found a null. Keep searching for a matching receiver,
1165 // but remember that this is an empty (unused) slot.
1166 bind(found_null);
1167 }
1168 }
1170 // In the fall-through case, we found no matching receiver, but we
1171 // observed the receiver[start_row] is NULL.
1173 // Fill in the receiver field and increment the count.
1174 int recvr_offset = in_bytes(VirtualCallData::receiver_offset(start_row));
1175 set_mdp_data_at(mdp, recvr_offset, receiver);
1176 int count_offset = in_bytes(VirtualCallData::receiver_count_offset(start_row));
1177 movptr(reg2, (int32_t)DataLayout::counter_increment);
1178 set_mdp_data_at(mdp, count_offset, reg2);
1179 if (start_row > 0) {
1180 jmp(done);
1181 }
1182 }
1184 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
1185 Register mdp, Register reg2,
1186 bool is_virtual_call) {
1187 assert(ProfileInterpreter, "must be profiling");
1188 Label done;
1190 record_klass_in_profile_helper(receiver, mdp, reg2, 0, done, is_virtual_call);
1192 bind (done);
1193 }
1195 void InterpreterMacroAssembler::profile_ret(Register return_bci, Register mdp) {
1196 if (ProfileInterpreter) {
1197 Label profile_continue;
1198 uint row;
1200 // If no method data exists, go to profile_continue.
1201 test_method_data_pointer(mdp, profile_continue);
1203 // Update the total ret count.
1204 increment_mdp_data_at(mdp, in_bytes(CounterData::count_offset()));
1206 for (row = 0; row < RetData::row_limit(); row++) {
1207 Label next_test;
1209 // See if return_bci is equal to bci[n]:
1210 test_mdp_data_at(mdp, in_bytes(RetData::bci_offset(row)), return_bci,
1211 noreg, next_test);
1213 // return_bci is equal to bci[n]. Increment the count.
1214 increment_mdp_data_at(mdp, in_bytes(RetData::bci_count_offset(row)));
1216 // The method data pointer needs to be updated to reflect the new target.
1217 update_mdp_by_offset(mdp, in_bytes(RetData::bci_displacement_offset(row)));
1218 jmp(profile_continue);
1219 bind(next_test);
1220 }
1222 update_mdp_for_ret(return_bci);
1224 bind (profile_continue);
1225 }
1226 }
1229 void InterpreterMacroAssembler::profile_null_seen(Register mdp) {
1230 if (ProfileInterpreter) {
1231 Label profile_continue;
1233 // If no method data exists, go to profile_continue.
1234 test_method_data_pointer(mdp, profile_continue);
1236 set_mdp_flag_at(mdp, BitData::null_seen_byte_constant());
1238 // The method data pointer needs to be updated.
1239 int mdp_delta = in_bytes(BitData::bit_data_size());
1240 if (TypeProfileCasts) {
1241 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1242 }
1243 update_mdp_by_constant(mdp, mdp_delta);
1245 bind (profile_continue);
1246 }
1247 }
1250 void InterpreterMacroAssembler::profile_typecheck_failed(Register mdp) {
1251 if (ProfileInterpreter && TypeProfileCasts) {
1252 Label profile_continue;
1254 // If no method data exists, go to profile_continue.
1255 test_method_data_pointer(mdp, profile_continue);
1257 int count_offset = in_bytes(CounterData::count_offset());
1258 // Back up the address, since we have already bumped the mdp.
1259 count_offset -= in_bytes(VirtualCallData::virtual_call_data_size());
1261 // *Decrement* the counter. We expect to see zero or small negatives.
1262 increment_mdp_data_at(mdp, count_offset, true);
1264 bind (profile_continue);
1265 }
1266 }
1269 void InterpreterMacroAssembler::profile_typecheck(Register mdp, Register klass, Register reg2)
1270 {
1271 if (ProfileInterpreter) {
1272 Label profile_continue;
1274 // If no method data exists, go to profile_continue.
1275 test_method_data_pointer(mdp, profile_continue);
1277 // The method data pointer needs to be updated.
1278 int mdp_delta = in_bytes(BitData::bit_data_size());
1279 if (TypeProfileCasts) {
1280 mdp_delta = in_bytes(VirtualCallData::virtual_call_data_size());
1282 // Record the object type.
1283 record_klass_in_profile(klass, mdp, reg2, false);
1284 assert(reg2 == rdi, "we know how to fix this blown reg");
1285 restore_locals(); // Restore EDI
1286 }
1287 update_mdp_by_constant(mdp, mdp_delta);
1289 bind(profile_continue);
1290 }
1291 }
1294 void InterpreterMacroAssembler::profile_switch_default(Register mdp) {
1295 if (ProfileInterpreter) {
1296 Label profile_continue;
1298 // If no method data exists, go to profile_continue.
1299 test_method_data_pointer(mdp, profile_continue);
1301 // Update the default case count
1302 increment_mdp_data_at(mdp, in_bytes(MultiBranchData::default_count_offset()));
1304 // The method data pointer needs to be updated.
1305 update_mdp_by_offset(mdp, in_bytes(MultiBranchData::default_displacement_offset()));
1307 bind (profile_continue);
1308 }
1309 }
1312 void InterpreterMacroAssembler::profile_switch_case(Register index, Register mdp, Register reg2) {
1313 if (ProfileInterpreter) {
1314 Label profile_continue;
1316 // If no method data exists, go to profile_continue.
1317 test_method_data_pointer(mdp, profile_continue);
1319 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes()
1320 movptr(reg2, (int32_t)in_bytes(MultiBranchData::per_case_size()));
1321 // index is positive and so should have correct value if this code were
1322 // used on 64bits
1323 imulptr(index, reg2);
1324 addptr(index, in_bytes(MultiBranchData::case_array_offset()));
1326 // Update the case count
1327 increment_mdp_data_at(mdp, index, in_bytes(MultiBranchData::relative_count_offset()));
1329 // The method data pointer needs to be updated.
1330 update_mdp_by_offset(mdp, index, in_bytes(MultiBranchData::relative_displacement_offset()));
1332 bind (profile_continue);
1333 }
1334 }
1336 #endif // !CC_INTERP
1340 void InterpreterMacroAssembler::verify_oop(Register reg, TosState state) {
1341 if (state == atos) MacroAssembler::verify_oop(reg);
1342 }
1345 #ifndef CC_INTERP
1346 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) {
1347 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth);
1348 }
1350 #endif /* CC_INTERP */
1353 void InterpreterMacroAssembler::notify_method_entry() {
1354 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1355 // track stack depth. If it is possible to enter interp_only_mode we add
1356 // the code to check if the event should be sent.
1357 if (JvmtiExport::can_post_interpreter_events()) {
1358 Label L;
1359 get_thread(rcx);
1360 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1361 testl(rcx,rcx);
1362 jcc(Assembler::zero, L);
1363 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry));
1364 bind(L);
1365 }
1367 {
1368 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1369 get_thread(rcx);
1370 get_method(rbx);
1371 call_VM_leaf(
1372 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), rcx, rbx);
1373 }
1375 // RedefineClasses() tracing support for obsolete method entry
1376 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) {
1377 get_thread(rcx);
1378 get_method(rbx);
1379 call_VM_leaf(
1380 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
1381 rcx, rbx);
1382 }
1383 }
1386 void InterpreterMacroAssembler::notify_method_exit(
1387 TosState state, NotifyMethodExitMode mode) {
1388 // Whenever JVMTI is interp_only_mode, method entry/exit events are sent to
1389 // track stack depth. If it is possible to enter interp_only_mode we add
1390 // the code to check if the event should be sent.
1391 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) {
1392 Label L;
1393 // Note: frame::interpreter_frame_result has a dependency on how the
1394 // method result is saved across the call to post_method_exit. If this
1395 // is changed then the interpreter_frame_result implementation will
1396 // need to be updated too.
1398 // For c++ interpreter the result is always stored at a known location in the frame
1399 // template interpreter will leave it on the top of the stack.
1400 NOT_CC_INTERP(push(state);)
1401 get_thread(rcx);
1402 movl(rcx, Address(rcx, JavaThread::interp_only_mode_offset()));
1403 testl(rcx,rcx);
1404 jcc(Assembler::zero, L);
1405 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
1406 bind(L);
1407 NOT_CC_INTERP(pop(state);)
1408 }
1410 {
1411 SkipIfEqual skip_if(this, &DTraceMethodProbes, 0);
1412 NOT_CC_INTERP(push(state));
1413 get_thread(rbx);
1414 get_method(rcx);
1415 call_VM_leaf(
1416 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
1417 rbx, rcx);
1418 NOT_CC_INTERP(pop(state));
1419 }
1420 }
1422 // Jump if ((*counter_addr += increment) & mask) satisfies the condition.
1423 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr,
1424 int increment, int mask,
1425 Register scratch, bool preloaded,
1426 Condition cond, Label* where) {
1427 if (!preloaded) {
1428 movl(scratch, counter_addr);
1429 }
1430 incrementl(scratch, increment);
1431 movl(counter_addr, scratch);
1432 andl(scratch, mask);
1433 jcc(cond, *where);
1434 }