1 /*
2 * Copyright (c) 1997, 2017, 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 */
24
25 #include "precompiled.hpp"
26 #include "interp_masm_sparc.hpp"
27 #include "interpreter/interpreter.hpp"
28 #include "interpreter/interpreterRuntime.hpp"
29 #include "logging/log.hpp"
30 #include "oops/arrayOop.hpp"
31 #include "oops/markOop.hpp"
32 #include "oops/methodData.hpp"
33 #include "oops/method.hpp"
34 #include "oops/methodCounters.hpp"
35 #include "prims/jvmtiExport.hpp"
36 #include "prims/jvmtiThreadState.hpp"
37 #include "runtime/basicLock.hpp"
38 #include "runtime/biasedLocking.hpp"
39 #include "runtime/safepointMechanism.hpp"
40 #include "runtime/sharedRuntime.hpp"
41 #include "runtime/thread.inline.hpp"
42 #include "utilities/align.hpp"
43
44 // Implementation of InterpreterMacroAssembler
45
46 // This file specializes the assember with interpreter-specific macros
47
48 const Address InterpreterMacroAssembler::l_tmp(FP, (frame::interpreter_frame_l_scratch_fp_offset * wordSize) + STACK_BIAS);
49 const Address InterpreterMacroAssembler::d_tmp(FP, (frame::interpreter_frame_d_scratch_fp_offset * wordSize) + STACK_BIAS);
50
51 void InterpreterMacroAssembler::jump_to_entry(address entry) {
52 assert(entry, "Entry must have been generated by now");
53 AddressLiteral al(entry);
54 jump_to(al, G3_scratch);
55 delayed()->nop();
56 }
57
58 void InterpreterMacroAssembler::compute_extra_locals_size_in_bytes(Register args_size, Register locals_size, Register delta) {
59 // Note: this algorithm is also used by C1's OSR entry sequence.
60 // Any changes should also be applied to CodeEmitter::emit_osr_entry().
61 assert_different_registers(args_size, locals_size);
62 // max_locals*2 for TAGS. Assumes that args_size has already been adjusted.
63 subcc(locals_size, args_size, delta);// extra space for non-arguments locals in words
64 // Use br/mov combination because it works on both V8 and V9 and is
65 // faster.
66 Label skip_move;
67 br(Assembler::negative, true, Assembler::pt, skip_move);
68 delayed()->mov(G0, delta);
69 bind(skip_move);
70 align_up(delta, WordsPerLong); // make multiple of 2 (SP must be 2-word aligned)
71 sll(delta, LogBytesPerWord, delta); // extra space for locals in bytes
72 }
73
74 // Dispatch code executed in the prolog of a bytecode which does not do it's
75 // own dispatch. The dispatch address is computed and placed in IdispatchAddress
76 void InterpreterMacroAssembler::dispatch_prolog(TosState state, int bcp_incr) {
77 assert_not_delayed();
78 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode
79 // dispatch table to use
80 AddressLiteral tbl(Interpreter::dispatch_table(state));
81 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize
82 set(tbl, G3_scratch); // compute addr of table
83 ld_ptr(G3_scratch, Lbyte_code, IdispatchAddress); // get entry addr
84 }
85
86
87 // Dispatch code executed in the epilog of a bytecode which does not do it's
88 // own dispatch. The dispatch address in IdispatchAddress is used for the
89 // dispatch.
90 void InterpreterMacroAssembler::dispatch_epilog(TosState state, int bcp_incr) {
91 assert_not_delayed();
92 verify_FPU(1, state);
93 interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
94 jmp( IdispatchAddress, 0 );
95 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr);
96 else delayed()->nop();
97 }
98
99 void InterpreterMacroAssembler::dispatch_next(TosState state, int bcp_incr, bool generate_poll) {
100 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr)
101 assert_not_delayed();
102 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode
103 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr, true, generate_poll);
104 }
105
106
107 void InterpreterMacroAssembler::dispatch_next_noverify_oop(TosState state, int bcp_incr) {
108 // %%%% consider branching to a single shared dispatch stub (for each bcp_incr)
109 assert_not_delayed();
110 ldub( Lbcp, bcp_incr, Lbyte_code); // load next bytecode
111 dispatch_Lbyte_code(state, Interpreter::dispatch_table(state), bcp_incr, false);
112 }
113
114
115 void InterpreterMacroAssembler::dispatch_via(TosState state, address* table) {
116 // load current bytecode
117 assert_not_delayed();
118 ldub( Lbcp, 0, Lbyte_code); // load next bytecode
119 dispatch_base(state, table);
120 }
121
122
123 void InterpreterMacroAssembler::call_VM_leaf_base(
124 Register java_thread,
125 address entry_point,
126 int number_of_arguments
127 ) {
128 if (!java_thread->is_valid())
129 java_thread = L7_thread_cache;
130 // super call
131 MacroAssembler::call_VM_leaf_base(java_thread, entry_point, number_of_arguments);
132 }
133
134
135 void InterpreterMacroAssembler::call_VM_base(
136 Register oop_result,
137 Register java_thread,
138 Register last_java_sp,
139 address entry_point,
140 int number_of_arguments,
141 bool check_exception
142 ) {
143 if (!java_thread->is_valid())
144 java_thread = L7_thread_cache;
145 // See class ThreadInVMfromInterpreter, which assumes that the interpreter
146 // takes responsibility for setting its own thread-state on call-out.
147 // However, ThreadInVMfromInterpreter resets the state to "in_Java".
148
149 //save_bcp(); // save bcp
150 MacroAssembler::call_VM_base(oop_result, java_thread, last_java_sp, entry_point, number_of_arguments, check_exception);
151 //restore_bcp(); // restore bcp
152 //restore_locals(); // restore locals pointer
153 }
154
155
156 void InterpreterMacroAssembler::check_and_handle_popframe(Register scratch_reg) {
157 if (JvmtiExport::can_pop_frame()) {
158 Label L;
159
160 // Check the "pending popframe condition" flag in the current thread
161 ld(G2_thread, JavaThread::popframe_condition_offset(), scratch_reg);
162
163 // Initiate popframe handling only if it is not already being processed. If the flag
164 // has the popframe_processing bit set, it means that this code is called *during* popframe
165 // handling - we don't want to reenter.
166 btst(JavaThread::popframe_pending_bit, scratch_reg);
167 br(zero, false, pt, L);
168 delayed()->nop();
169 btst(JavaThread::popframe_processing_bit, scratch_reg);
170 br(notZero, false, pt, L);
171 delayed()->nop();
172
173 // Call Interpreter::remove_activation_preserving_args_entry() to get the
174 // address of the same-named entrypoint in the generated interpreter code.
175 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_preserving_args_entry));
176
177 // Jump to Interpreter::_remove_activation_preserving_args_entry
178 jmpl(O0, G0, G0);
179 delayed()->nop();
180 bind(L);
181 }
182 }
183
184
185 void InterpreterMacroAssembler::load_earlyret_value(TosState state) {
186 Register thr_state = G4_scratch;
187 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state);
188 const Address tos_addr(thr_state, JvmtiThreadState::earlyret_tos_offset());
189 const Address oop_addr(thr_state, JvmtiThreadState::earlyret_oop_offset());
190 const Address val_addr(thr_state, JvmtiThreadState::earlyret_value_offset());
191 switch (state) {
192 case ltos: ld_long(val_addr, Otos_l); break;
193 case atos: ld_ptr(oop_addr, Otos_l);
194 st_ptr(G0, oop_addr); break;
195 case btos: // fall through
196 case ztos: // fall through
197 case ctos: // fall through
198 case stos: // fall through
199 case itos: ld(val_addr, Otos_l1); break;
200 case ftos: ldf(FloatRegisterImpl::S, val_addr, Ftos_f); break;
201 case dtos: ldf(FloatRegisterImpl::D, val_addr, Ftos_d); break;
202 case vtos: /* nothing to do */ break;
203 default : ShouldNotReachHere();
204 }
205 // Clean up tos value in the jvmti thread state
206 or3(G0, ilgl, G3_scratch);
207 stw(G3_scratch, tos_addr);
208 st_long(G0, val_addr);
209 interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
210 }
211
212
213 void InterpreterMacroAssembler::check_and_handle_earlyret(Register scratch_reg) {
214 if (JvmtiExport::can_force_early_return()) {
215 Label L;
216 Register thr_state = G3_scratch;
217 ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), thr_state);
218 br_null_short(thr_state, pt, L); // if (thread->jvmti_thread_state() == NULL) exit;
219
220 // Initiate earlyret handling only if it is not already being processed.
221 // If the flag has the earlyret_processing bit set, it means that this code
222 // is called *during* earlyret handling - we don't want to reenter.
223 ld(thr_state, JvmtiThreadState::earlyret_state_offset(), G4_scratch);
224 cmp_and_br_short(G4_scratch, JvmtiThreadState::earlyret_pending, Assembler::notEqual, pt, L);
225
226 // Call Interpreter::remove_activation_early_entry() to get the address of the
227 // same-named entrypoint in the generated interpreter code
228 ld(thr_state, JvmtiThreadState::earlyret_tos_offset(), Otos_l1);
229 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, Interpreter::remove_activation_early_entry), Otos_l1);
230
231 // Jump to Interpreter::_remove_activation_early_entry
232 jmpl(O0, G0, G0);
233 delayed()->nop();
234 bind(L);
235 }
236 }
237
238
239 void InterpreterMacroAssembler::super_call_VM_leaf(Register thread_cache, address entry_point, Register arg_1, Register arg_2) {
240 mov(arg_1, O0);
241 mov(arg_2, O1);
242 MacroAssembler::call_VM_leaf_base(thread_cache, entry_point, 2);
243 }
244
245 void InterpreterMacroAssembler::dispatch_base(TosState state, address* table) {
246 assert_not_delayed();
247 dispatch_Lbyte_code(state, table);
248 }
249
250
251 void InterpreterMacroAssembler::dispatch_normal(TosState state) {
252 dispatch_base(state, Interpreter::normal_table(state));
253 }
254
255
256 void InterpreterMacroAssembler::dispatch_only(TosState state) {
257 dispatch_base(state, Interpreter::dispatch_table(state));
258 }
259
260
261 // common code to dispatch and dispatch_only
262 // dispatch value in Lbyte_code and increment Lbcp
263
264 void InterpreterMacroAssembler::dispatch_Lbyte_code(TosState state, address* table, int bcp_incr, bool verify, bool generate_poll) {
265 verify_FPU(1, state);
266 // %%%%% maybe implement +VerifyActivationFrameSize here
267 //verify_thread(); //too slow; we will just verify on method entry & exit
268 if (verify) interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
269 // dispatch table to use
270 AddressLiteral tbl(table);
271 Label dispatch;
272
273 if (SafepointMechanism::uses_thread_local_poll() && generate_poll) {
274 AddressLiteral sfpt_tbl(Interpreter::safept_table(state));
275 Label no_safepoint;
276
277 if (tbl.value() != sfpt_tbl.value()) {
278 ldx(Address(G2_thread, Thread::polling_page_offset()), G3_scratch, 0);
279 // Armed page has poll_bit set, if poll bit is cleared just continue.
280 and3(G3_scratch, SafepointMechanism::poll_bit(), G3_scratch);
281
282 br_null_short(G3_scratch, Assembler::pt, no_safepoint);
283 set(sfpt_tbl, G3_scratch);
284 ba_short(dispatch);
285 }
286 bind(no_safepoint);
287 }
288
289 set(tbl, G3_scratch); // compute addr of table
290 bind(dispatch);
291 sll(Lbyte_code, LogBytesPerWord, Lbyte_code); // multiply by wordSize
292 ld_ptr(G3_scratch, Lbyte_code, G3_scratch); // get entry addr
293 jmp( G3_scratch, 0 );
294 if (bcp_incr != 0) delayed()->inc(Lbcp, bcp_incr);
295 else delayed()->nop();
296 }
297
298
299 // Helpers for expression stack
300
301 // Longs and doubles are Category 2 computational types in the
302 // JVM specification (section 3.11.1) and take 2 expression stack or
303 // local slots.
304 // Aligning them on 32 bit with tagged stacks is hard because the code generated
305 // for the dup* bytecodes depends on what types are already on the stack.
306 // If the types are split into the two stack/local slots, that is much easier
307 // (and we can use 0 for non-reference tags).
308
309 // Known good alignment in _LP64 but unknown otherwise
310 void InterpreterMacroAssembler::load_unaligned_double(Register r1, int offset, FloatRegister d) {
311 assert_not_delayed();
312
313 ldf(FloatRegisterImpl::D, r1, offset, d);
314 }
315
316 // Known good alignment in _LP64 but unknown otherwise
317 void InterpreterMacroAssembler::store_unaligned_double(FloatRegister d, Register r1, int offset) {
318 assert_not_delayed();
319
320 stf(FloatRegisterImpl::D, d, r1, offset);
321 // store something more useful here
322 debug_only(stx(G0, r1, offset+Interpreter::stackElementSize);)
323 }
324
325
326 // Known good alignment in _LP64 but unknown otherwise
327 void InterpreterMacroAssembler::load_unaligned_long(Register r1, int offset, Register rd) {
328 assert_not_delayed();
329 ldx(r1, offset, rd);
330 }
331
332 // Known good alignment in _LP64 but unknown otherwise
333 void InterpreterMacroAssembler::store_unaligned_long(Register l, Register r1, int offset) {
334 assert_not_delayed();
335
336 stx(l, r1, offset);
337 // store something more useful here
338 stx(G0, r1, offset+Interpreter::stackElementSize);
339 }
340
341 void InterpreterMacroAssembler::pop_i(Register r) {
342 assert_not_delayed();
343 ld(Lesp, Interpreter::expr_offset_in_bytes(0), r);
344 inc(Lesp, Interpreter::stackElementSize);
345 debug_only(verify_esp(Lesp));
346 }
347
348 void InterpreterMacroAssembler::pop_ptr(Register r, Register scratch) {
349 assert_not_delayed();
350 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(0), r);
351 inc(Lesp, Interpreter::stackElementSize);
352 debug_only(verify_esp(Lesp));
353 }
354
355 void InterpreterMacroAssembler::pop_l(Register r) {
356 assert_not_delayed();
357 load_unaligned_long(Lesp, Interpreter::expr_offset_in_bytes(0), r);
358 inc(Lesp, 2*Interpreter::stackElementSize);
359 debug_only(verify_esp(Lesp));
360 }
361
362
363 void InterpreterMacroAssembler::pop_f(FloatRegister f, Register scratch) {
364 assert_not_delayed();
365 ldf(FloatRegisterImpl::S, Lesp, Interpreter::expr_offset_in_bytes(0), f);
366 inc(Lesp, Interpreter::stackElementSize);
367 debug_only(verify_esp(Lesp));
368 }
369
370
371 void InterpreterMacroAssembler::pop_d(FloatRegister f, Register scratch) {
372 assert_not_delayed();
373 load_unaligned_double(Lesp, Interpreter::expr_offset_in_bytes(0), f);
374 inc(Lesp, 2*Interpreter::stackElementSize);
375 debug_only(verify_esp(Lesp));
376 }
377
378
379 void InterpreterMacroAssembler::push_i(Register r) {
380 assert_not_delayed();
381 debug_only(verify_esp(Lesp));
382 st(r, Lesp, 0);
383 dec(Lesp, Interpreter::stackElementSize);
384 }
385
386 void InterpreterMacroAssembler::push_ptr(Register r) {
387 assert_not_delayed();
388 st_ptr(r, Lesp, 0);
389 dec(Lesp, Interpreter::stackElementSize);
390 }
391
392 // remember: our convention for longs in SPARC is:
393 // O0 (Otos_l1) has high-order part in first word,
394 // O1 (Otos_l2) has low-order part in second word
395
396 void InterpreterMacroAssembler::push_l(Register r) {
397 assert_not_delayed();
398 debug_only(verify_esp(Lesp));
399 // Longs are stored in memory-correct order, even if unaligned.
400 int offset = -Interpreter::stackElementSize;
401 store_unaligned_long(r, Lesp, offset);
402 dec(Lesp, 2 * Interpreter::stackElementSize);
403 }
404
405
406 void InterpreterMacroAssembler::push_f(FloatRegister f) {
407 assert_not_delayed();
408 debug_only(verify_esp(Lesp));
409 stf(FloatRegisterImpl::S, f, Lesp, 0);
410 dec(Lesp, Interpreter::stackElementSize);
411 }
412
413
414 void InterpreterMacroAssembler::push_d(FloatRegister d) {
415 assert_not_delayed();
416 debug_only(verify_esp(Lesp));
417 // Longs are stored in memory-correct order, even if unaligned.
418 int offset = -Interpreter::stackElementSize;
419 store_unaligned_double(d, Lesp, offset);
420 dec(Lesp, 2 * Interpreter::stackElementSize);
421 }
422
423
424 void InterpreterMacroAssembler::push(TosState state) {
425 interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
426 switch (state) {
427 case atos: push_ptr(); break;
428 case btos: // fall through
429 case ztos: // fall through
430 case ctos: // fall through
431 case stos: // fall through
432 case itos: push_i(); break;
433 case ltos: push_l(); break;
434 case ftos: push_f(); break;
435 case dtos: push_d(); break;
436 case vtos: /* nothing to do */ break;
437 default : ShouldNotReachHere();
438 }
439 }
440
441
442 void InterpreterMacroAssembler::pop(TosState state) {
443 switch (state) {
444 case atos: pop_ptr(); break;
445 case btos: // fall through
446 case ztos: // fall through
447 case ctos: // fall through
448 case stos: // fall through
449 case itos: pop_i(); break;
450 case ltos: pop_l(); break;
451 case ftos: pop_f(); break;
452 case dtos: pop_d(); break;
453 case vtos: /* nothing to do */ break;
454 default : ShouldNotReachHere();
455 }
456 interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
457 }
458
459
460 // Helpers for swap and dup
461 void InterpreterMacroAssembler::load_ptr(int n, Register val) {
462 ld_ptr(Lesp, Interpreter::expr_offset_in_bytes(n), val);
463 }
464 void InterpreterMacroAssembler::store_ptr(int n, Register val) {
465 st_ptr(val, Lesp, Interpreter::expr_offset_in_bytes(n));
466 }
467
468
469 void InterpreterMacroAssembler::load_receiver(Register param_count,
470 Register recv) {
471 sll(param_count, Interpreter::logStackElementSize, param_count);
472 ld_ptr(Lesp, param_count, recv); // gets receiver oop
473 }
474
475 void InterpreterMacroAssembler::empty_expression_stack() {
476 // Reset Lesp.
477 sub( Lmonitors, wordSize, Lesp );
478
479 // Reset SP by subtracting more space from Lesp.
480 Label done;
481 assert(G4_scratch != Gframe_size, "Only you can prevent register aliasing!");
482
483 // A native does not need to do this, since its callee does not change SP.
484 ld(Lmethod, Method::access_flags_offset(), Gframe_size); // Load access flags.
485 btst(JVM_ACC_NATIVE, Gframe_size);
486 br(Assembler::notZero, false, Assembler::pt, done);
487 delayed()->nop();
488
489 // Compute max expression stack+register save area
490 ld_ptr(Lmethod, in_bytes(Method::const_offset()), Gframe_size);
491 lduh(Gframe_size, in_bytes(ConstMethod::max_stack_offset()), Gframe_size); // Load max stack.
492 add(Gframe_size, frame::memory_parameter_word_sp_offset+Method::extra_stack_entries(), Gframe_size );
493
494 //
495 // now set up a stack frame with the size computed above
496 //
497 //round_to( Gframe_size, WordsPerLong ); // -- moved down to the "and" below
498 sll( Gframe_size, LogBytesPerWord, Gframe_size );
499 sub( Lesp, Gframe_size, Gframe_size );
500 and3( Gframe_size, -(2 * wordSize), Gframe_size ); // align SP (downwards) to an 8/16-byte boundary
501 debug_only(verify_sp(Gframe_size, G4_scratch));
502 sub(Gframe_size, STACK_BIAS, Gframe_size );
503 mov(Gframe_size, SP);
504
505 bind(done);
506 }
507
508
509 #ifdef ASSERT
510 void InterpreterMacroAssembler::verify_sp(Register Rsp, Register Rtemp) {
511 Label Bad, OK;
512
513 // Saved SP must be aligned.
514 btst(2*BytesPerWord-1, Rsp);
515 br(Assembler::notZero, false, Assembler::pn, Bad);
516 delayed()->nop();
517
518 // Saved SP, plus register window size, must not be above FP.
519 add(Rsp, frame::register_save_words * wordSize, Rtemp);
520 sub(Rtemp, STACK_BIAS, Rtemp); // Bias Rtemp before cmp to FP
521 cmp_and_brx_short(Rtemp, FP, Assembler::greaterUnsigned, Assembler::pn, Bad);
522
523 // Saved SP must not be ridiculously below current SP.
524 size_t maxstack = MAX2(JavaThread::stack_size_at_create(), (size_t) 4*K*K);
525 set(maxstack, Rtemp);
526 sub(SP, Rtemp, Rtemp);
527 add(Rtemp, STACK_BIAS, Rtemp); // Unbias Rtemp before cmp to Rsp
528 cmp_and_brx_short(Rsp, Rtemp, Assembler::lessUnsigned, Assembler::pn, Bad);
529
530 ba_short(OK);
531
532 bind(Bad);
533 stop("on return to interpreted call, restored SP is corrupted");
534
535 bind(OK);
536 }
537
538
539 void InterpreterMacroAssembler::verify_esp(Register Resp) {
540 // about to read or write Resp[0]
541 // make sure it is not in the monitors or the register save area
542 Label OK1, OK2;
543
544 cmp(Resp, Lmonitors);
545 brx(Assembler::lessUnsigned, true, Assembler::pt, OK1);
546 delayed()->sub(Resp, frame::memory_parameter_word_sp_offset * wordSize, Resp);
547 stop("too many pops: Lesp points into monitor area");
548 bind(OK1);
549 sub(Resp, STACK_BIAS, Resp);
550 cmp(Resp, SP);
551 brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, OK2);
552 delayed()->add(Resp, STACK_BIAS + frame::memory_parameter_word_sp_offset * wordSize, Resp);
553 stop("too many pushes: Lesp points into register window");
554 bind(OK2);
555 }
556 #endif // ASSERT
557
558 // Load compiled (i2c) or interpreter entry when calling from interpreted and
559 // do the call. Centralized so that all interpreter calls will do the same actions.
560 // If jvmti single stepping is on for a thread we must not call compiled code.
561 void InterpreterMacroAssembler::call_from_interpreter(Register target, Register scratch, Register Rret) {
562
563 // Assume we want to go compiled if available
564
565 ld_ptr(G5_method, in_bytes(Method::from_interpreted_offset()), target);
566
567 if (JvmtiExport::can_post_interpreter_events()) {
568 // JVMTI events, such as single-stepping, are implemented partly by avoiding running
569 // compiled code in threads for which the event is enabled. Check here for
570 // interp_only_mode if these events CAN be enabled.
571 verify_thread();
572 Label skip_compiled_code;
573
574 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset());
575 ld(interp_only, scratch);
576 cmp_zero_and_br(Assembler::notZero, scratch, skip_compiled_code, true, Assembler::pn);
577 delayed()->ld_ptr(G5_method, in_bytes(Method::interpreter_entry_offset()), target);
578 bind(skip_compiled_code);
579 }
580
581 // the i2c_adapters need Method* in G5_method (right? %%%)
582 // do the call
583 #ifdef ASSERT
584 {
585 Label ok;
586 br_notnull_short(target, Assembler::pt, ok);
587 stop("null entry point");
588 bind(ok);
589 }
590 #endif // ASSERT
591
592 // Adjust Rret first so Llast_SP can be same as Rret
593 add(Rret, -frame::pc_return_offset, O7);
594 add(Lesp, BytesPerWord, Gargs); // setup parameter pointer
595 // Record SP so we can remove any stack space allocated by adapter transition
596 jmp(target, 0);
597 delayed()->mov(SP, Llast_SP);
598 }
599
600 void InterpreterMacroAssembler::if_cmp(Condition cc, bool ptr_compare) {
601 assert_not_delayed();
602
603 Label not_taken;
604 if (ptr_compare) brx(cc, false, Assembler::pn, not_taken);
605 else br (cc, false, Assembler::pn, not_taken);
606 delayed()->nop();
607
608 TemplateTable::branch(false,false);
609
610 bind(not_taken);
611
612 profile_not_taken_branch(G3_scratch);
613 }
614
615
616 void InterpreterMacroAssembler::get_2_byte_integer_at_bcp(
617 int bcp_offset,
618 Register Rtmp,
619 Register Rdst,
620 signedOrNot is_signed,
621 setCCOrNot should_set_CC ) {
622 assert(Rtmp != Rdst, "need separate temp register");
623 assert_not_delayed();
624 switch (is_signed) {
625 default: ShouldNotReachHere();
626
627 case Signed: ldsb( Lbcp, bcp_offset, Rdst ); break; // high byte
628 case Unsigned: ldub( Lbcp, bcp_offset, Rdst ); break; // high byte
629 }
630 ldub( Lbcp, bcp_offset + 1, Rtmp ); // low byte
631 sll( Rdst, BitsPerByte, Rdst);
632 switch (should_set_CC ) {
633 default: ShouldNotReachHere();
634
635 case set_CC: orcc( Rdst, Rtmp, Rdst ); break;
636 case dont_set_CC: or3( Rdst, Rtmp, Rdst ); break;
637 }
638 }
639
640
641 void InterpreterMacroAssembler::get_4_byte_integer_at_bcp(
642 int bcp_offset,
643 Register Rtmp,
644 Register Rdst,
645 setCCOrNot should_set_CC ) {
646 assert(Rtmp != Rdst, "need separate temp register");
647 assert_not_delayed();
648 add( Lbcp, bcp_offset, Rtmp);
649 andcc( Rtmp, 3, G0);
650 Label aligned;
651 switch (should_set_CC ) {
652 default: ShouldNotReachHere();
653
654 case set_CC: break;
655 case dont_set_CC: break;
656 }
657
658 br(Assembler::zero, true, Assembler::pn, aligned);
659 delayed()->ldsw(Rtmp, 0, Rdst);
660
661 ldub(Lbcp, bcp_offset + 3, Rdst);
662 ldub(Lbcp, bcp_offset + 2, Rtmp); sll(Rtmp, 8, Rtmp); or3(Rtmp, Rdst, Rdst);
663 ldub(Lbcp, bcp_offset + 1, Rtmp); sll(Rtmp, 16, Rtmp); or3(Rtmp, Rdst, Rdst);
664 ldsb(Lbcp, bcp_offset + 0, Rtmp); sll(Rtmp, 24, Rtmp);
665 or3(Rtmp, Rdst, Rdst );
666
667 bind(aligned);
668 if (should_set_CC == set_CC) tst(Rdst);
669 }
670
671 void InterpreterMacroAssembler::get_cache_index_at_bcp(Register temp, Register index,
672 int bcp_offset, size_t index_size) {
673 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
674 if (index_size == sizeof(u2)) {
675 get_2_byte_integer_at_bcp(bcp_offset, temp, index, Unsigned);
676 } else if (index_size == sizeof(u4)) {
677 get_4_byte_integer_at_bcp(bcp_offset, temp, index);
678 assert(ConstantPool::decode_invokedynamic_index(~123) == 123, "else change next line");
679 xor3(index, -1, index); // convert to plain index
680 } else if (index_size == sizeof(u1)) {
681 ldub(Lbcp, bcp_offset, index);
682 } else {
683 ShouldNotReachHere();
684 }
685 }
686
687
688 void InterpreterMacroAssembler::get_cache_and_index_at_bcp(Register cache, Register tmp,
689 int bcp_offset, size_t index_size) {
690 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
691 assert_different_registers(cache, tmp);
692 assert_not_delayed();
693 get_cache_index_at_bcp(cache, tmp, bcp_offset, index_size);
694 // convert from field index to ConstantPoolCacheEntry index and from
695 // word index to byte offset
696 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp);
697 add(LcpoolCache, tmp, cache);
698 }
699
700
701 void InterpreterMacroAssembler::get_cache_and_index_and_bytecode_at_bcp(Register cache,
702 Register temp,
703 Register bytecode,
704 int byte_no,
705 int bcp_offset,
706 size_t index_size) {
707 get_cache_and_index_at_bcp(cache, temp, bcp_offset, index_size);
708 ld_ptr(cache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::indices_offset(), bytecode);
709 const int shift_count = (1 + byte_no) * BitsPerByte;
710 assert((byte_no == TemplateTable::f1_byte && shift_count == ConstantPoolCacheEntry::bytecode_1_shift) ||
711 (byte_no == TemplateTable::f2_byte && shift_count == ConstantPoolCacheEntry::bytecode_2_shift),
712 "correct shift count");
713 srl(bytecode, shift_count, bytecode);
714 assert(ConstantPoolCacheEntry::bytecode_1_mask == ConstantPoolCacheEntry::bytecode_2_mask, "common mask");
715 and3(bytecode, ConstantPoolCacheEntry::bytecode_1_mask, bytecode);
716 }
717
718
719 void InterpreterMacroAssembler::get_cache_entry_pointer_at_bcp(Register cache, Register tmp,
720 int bcp_offset, size_t index_size) {
721 assert(bcp_offset > 0, "bcp is still pointing to start of bytecode");
722 assert_different_registers(cache, tmp);
723 assert_not_delayed();
724 if (index_size == sizeof(u2)) {
725 get_2_byte_integer_at_bcp(bcp_offset, cache, tmp, Unsigned);
726 } else {
727 ShouldNotReachHere(); // other sizes not supported here
728 }
729 // convert from field index to ConstantPoolCacheEntry index
730 // and from word index to byte offset
731 sll(tmp, exact_log2(in_words(ConstantPoolCacheEntry::size()) * BytesPerWord), tmp);
732 // skip past the header
733 add(tmp, in_bytes(ConstantPoolCache::base_offset()), tmp);
734 // construct pointer to cache entry
735 add(LcpoolCache, tmp, cache);
736 }
737
738
739 // Load object from cpool->resolved_references(index)
740 void InterpreterMacroAssembler::load_resolved_reference_at_index(
741 Register result, Register index) {
742 assert_different_registers(result, index);
743 assert_not_delayed();
744 // convert from field index to resolved_references() index and from
745 // word index to byte offset. Since this is a java object, it can be compressed
746 Register tmp = index; // reuse
747 sll(index, LogBytesPerHeapOop, tmp);
748 get_constant_pool(result);
749 // load pointer for resolved_references[] objArray
750 ld_ptr(result, ConstantPool::cache_offset_in_bytes(), result);
751 ld_ptr(result, ConstantPoolCache::resolved_references_offset_in_bytes(), result);
752 resolve_oop_handle(result);
753 // Add in the index
754 add(result, tmp, result);
755 load_heap_oop(result, arrayOopDesc::base_offset_in_bytes(T_OBJECT), result);
756 }
757
758
759 // load cpool->resolved_klass_at(index)
760 void InterpreterMacroAssembler::load_resolved_klass_at_offset(Register Rcpool,
761 Register Roffset, Register Rklass) {
762 // int value = *this_cp->int_at_addr(which);
763 // int resolved_klass_index = extract_low_short_from_int(value);
764 //
765 // Because SPARC is big-endian, the low_short is at (cpool->int_at_addr(which) + 2 bytes)
766 add(Roffset, Rcpool, Roffset);
767 lduh(Roffset, sizeof(ConstantPool) + 2, Roffset); // Roffset = resolved_klass_index
768
769 Register Rresolved_klasses = Rklass;
770 ld_ptr(Rcpool, ConstantPool::resolved_klasses_offset_in_bytes(), Rresolved_klasses);
771 sll(Roffset, LogBytesPerWord, Roffset);
772 add(Roffset, Array<Klass*>::base_offset_in_bytes(), Roffset);
773 ld_ptr(Rresolved_klasses, Roffset, Rklass);
774 }
775
776
777 // Generate a subtype check: branch to ok_is_subtype if sub_klass is
778 // a subtype of super_klass. Blows registers Rsuper_klass, Rsub_klass, tmp1, tmp2.
779 void InterpreterMacroAssembler::gen_subtype_check(Register Rsub_klass,
780 Register Rsuper_klass,
781 Register Rtmp1,
782 Register Rtmp2,
783 Register Rtmp3,
784 Label &ok_is_subtype ) {
785 Label not_subtype;
786
787 // Profile the not-null value's klass.
788 profile_typecheck(Rsub_klass, Rtmp1);
789
790 check_klass_subtype_fast_path(Rsub_klass, Rsuper_klass,
791 Rtmp1, Rtmp2,
792 &ok_is_subtype, ¬_subtype, NULL);
793
794 check_klass_subtype_slow_path(Rsub_klass, Rsuper_klass,
795 Rtmp1, Rtmp2, Rtmp3, /*hack:*/ noreg,
796 &ok_is_subtype, NULL);
797
798 bind(not_subtype);
799 profile_typecheck_failed(Rtmp1);
800 }
801
802 // Separate these two to allow for delay slot in middle
803 // These are used to do a test and full jump to exception-throwing code.
804
805 // %%%%% Could possibly reoptimize this by testing to see if could use
806 // a single conditional branch (i.e. if span is small enough.
807 // If you go that route, than get rid of the split and give up
808 // on the delay-slot hack.
809
810 void InterpreterMacroAssembler::throw_if_not_1_icc( Condition ok_condition,
811 Label& ok ) {
812 assert_not_delayed();
813 br(ok_condition, true, pt, ok);
814 // DELAY SLOT
815 }
816
817 void InterpreterMacroAssembler::throw_if_not_1_xcc( Condition ok_condition,
818 Label& ok ) {
819 assert_not_delayed();
820 bp( ok_condition, true, Assembler::xcc, pt, ok);
821 // DELAY SLOT
822 }
823
824 void InterpreterMacroAssembler::throw_if_not_1_x( Condition ok_condition,
825 Label& ok ) {
826 assert_not_delayed();
827 brx(ok_condition, true, pt, ok);
828 // DELAY SLOT
829 }
830
831 void InterpreterMacroAssembler::throw_if_not_2( address throw_entry_point,
832 Register Rscratch,
833 Label& ok ) {
834 assert(throw_entry_point != NULL, "entry point must be generated by now");
835 AddressLiteral dest(throw_entry_point);
836 jump_to(dest, Rscratch);
837 delayed()->nop();
838 bind(ok);
839 }
840
841
842 // And if you cannot use the delay slot, here is a shorthand:
843
844 void InterpreterMacroAssembler::throw_if_not_icc( Condition ok_condition,
845 address throw_entry_point,
846 Register Rscratch ) {
847 Label ok;
848 if (ok_condition != never) {
849 throw_if_not_1_icc( ok_condition, ok);
850 delayed()->nop();
851 }
852 throw_if_not_2( throw_entry_point, Rscratch, ok);
853 }
854 void InterpreterMacroAssembler::throw_if_not_xcc( Condition ok_condition,
855 address throw_entry_point,
856 Register Rscratch ) {
857 Label ok;
858 if (ok_condition != never) {
859 throw_if_not_1_xcc( ok_condition, ok);
860 delayed()->nop();
861 }
862 throw_if_not_2( throw_entry_point, Rscratch, ok);
863 }
864 void InterpreterMacroAssembler::throw_if_not_x( Condition ok_condition,
865 address throw_entry_point,
866 Register Rscratch ) {
867 Label ok;
868 if (ok_condition != never) {
869 throw_if_not_1_x( ok_condition, ok);
870 delayed()->nop();
871 }
872 throw_if_not_2( throw_entry_point, Rscratch, ok);
873 }
874
875 // Check that index is in range for array, then shift index by index_shift, and put arrayOop + shifted_index into res
876 // Note: res is still shy of address by array offset into object.
877
878 void InterpreterMacroAssembler::index_check_without_pop(Register array, Register index, int index_shift, Register tmp, Register res) {
879 assert_not_delayed();
880
881 verify_oop(array);
882 // sign extend since tos (index) can be a 32bit value
883 sra(index, G0, index);
884
885 // check array
886 Label ptr_ok;
887 tst(array);
888 throw_if_not_1_x( notZero, ptr_ok );
889 delayed()->ld( array, arrayOopDesc::length_offset_in_bytes(), tmp ); // check index
890 throw_if_not_2( Interpreter::_throw_NullPointerException_entry, G3_scratch, ptr_ok);
891
892 Label index_ok;
893 cmp(index, tmp);
894 throw_if_not_1_icc( lessUnsigned, index_ok );
895 if (index_shift > 0) delayed()->sll(index, index_shift, index);
896 else delayed()->add(array, index, res); // addr - const offset in index
897 // convention: move aberrant index into G3_scratch for exception message
898 mov(index, G3_scratch);
899 throw_if_not_2( Interpreter::_throw_ArrayIndexOutOfBoundsException_entry, G4_scratch, index_ok);
900
901 // add offset if didn't do it in delay slot
902 if (index_shift > 0) add(array, index, res); // addr - const offset in index
903 }
904
905
906 void InterpreterMacroAssembler::index_check(Register array, Register index, int index_shift, Register tmp, Register res) {
907 assert_not_delayed();
908
909 // pop array
910 pop_ptr(array);
911
912 // check array
913 index_check_without_pop(array, index, index_shift, tmp, res);
914 }
915
916
917 void InterpreterMacroAssembler::get_const(Register Rdst) {
918 ld_ptr(Lmethod, in_bytes(Method::const_offset()), Rdst);
919 }
920
921
922 void InterpreterMacroAssembler::get_constant_pool(Register Rdst) {
923 get_const(Rdst);
924 ld_ptr(Rdst, in_bytes(ConstMethod::constants_offset()), Rdst);
925 }
926
927
928 void InterpreterMacroAssembler::get_constant_pool_cache(Register Rdst) {
929 get_constant_pool(Rdst);
930 ld_ptr(Rdst, ConstantPool::cache_offset_in_bytes(), Rdst);
931 }
932
933
934 void InterpreterMacroAssembler::get_cpool_and_tags(Register Rcpool, Register Rtags) {
935 get_constant_pool(Rcpool);
936 ld_ptr(Rcpool, ConstantPool::tags_offset_in_bytes(), Rtags);
937 }
938
939
940 // unlock if synchronized method
941 //
942 // Unlock the receiver if this is a synchronized method.
943 // Unlock any Java monitors from syncronized blocks.
944 //
945 // If there are locked Java monitors
946 // If throw_monitor_exception
947 // throws IllegalMonitorStateException
948 // Else if install_monitor_exception
949 // installs IllegalMonitorStateException
950 // Else
951 // no error processing
952 void InterpreterMacroAssembler::unlock_if_synchronized_method(TosState state,
953 bool throw_monitor_exception,
954 bool install_monitor_exception) {
955 Label unlocked, unlock, no_unlock;
956
957 // get the value of _do_not_unlock_if_synchronized into G1_scratch
958 const Address do_not_unlock_if_synchronized(G2_thread,
959 JavaThread::do_not_unlock_if_synchronized_offset());
960 ldbool(do_not_unlock_if_synchronized, G1_scratch);
961 stbool(G0, do_not_unlock_if_synchronized); // reset the flag
962
963 // check if synchronized method
964 const Address access_flags(Lmethod, Method::access_flags_offset());
965 interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
966 push(state); // save tos
967 ld(access_flags, G3_scratch); // Load access flags.
968 btst(JVM_ACC_SYNCHRONIZED, G3_scratch);
969 br(zero, false, pt, unlocked);
970 delayed()->nop();
971
972 // Don't unlock anything if the _do_not_unlock_if_synchronized flag
973 // is set.
974 cmp_zero_and_br(Assembler::notZero, G1_scratch, no_unlock);
975 delayed()->nop();
976
977 // BasicObjectLock will be first in list, since this is a synchronized method. However, need
978 // to check that the object has not been unlocked by an explicit monitorexit bytecode.
979
980 //Intel: if (throw_monitor_exception) ... else ...
981 // Entry already unlocked, need to throw exception
982 //...
983
984 // pass top-most monitor elem
985 add( top_most_monitor(), O1 );
986
987 ld_ptr(O1, BasicObjectLock::obj_offset_in_bytes(), G3_scratch);
988 br_notnull_short(G3_scratch, pt, unlock);
989
990 if (throw_monitor_exception) {
991 // Entry already unlocked need to throw an exception
992 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
993 should_not_reach_here();
994 } else {
995 // Monitor already unlocked during a stack unroll.
996 // If requested, install an illegal_monitor_state_exception.
997 // Continue with stack unrolling.
998 if (install_monitor_exception) {
999 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
1000 }
1001 ba_short(unlocked);
1002 }
1003
1004 bind(unlock);
1005
1006 unlock_object(O1);
1007
1008 bind(unlocked);
1009
1010 // I0, I1: Might contain return value
1011
1012 // Check that all monitors are unlocked
1013 { Label loop, exception, entry, restart;
1014
1015 Register Rmptr = O0;
1016 Register Rtemp = O1;
1017 Register Rlimit = Lmonitors;
1018 const jint delta = frame::interpreter_frame_monitor_size() * wordSize;
1019 assert( (delta & LongAlignmentMask) == 0,
1020 "sizeof BasicObjectLock must be even number of doublewords");
1021
1022 #ifdef ASSERT
1023 add(top_most_monitor(), Rmptr, delta);
1024 { Label L;
1025 // ensure that Rmptr starts out above (or at) Rlimit
1026 cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L);
1027 stop("monitor stack has negative size");
1028 bind(L);
1029 }
1030 #endif
1031 bind(restart);
1032 ba(entry);
1033 delayed()->
1034 add(top_most_monitor(), Rmptr, delta); // points to current entry, starting with bottom-most entry
1035
1036 // Entry is still locked, need to throw exception
1037 bind(exception);
1038 if (throw_monitor_exception) {
1039 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
1040 should_not_reach_here();
1041 } else {
1042 // Stack unrolling. Unlock object and if requested, install illegal_monitor_exception.
1043 // Unlock does not block, so don't have to worry about the frame
1044 unlock_object(Rmptr);
1045 if (install_monitor_exception) {
1046 MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::new_illegal_monitor_state_exception));
1047 }
1048 ba_short(restart);
1049 }
1050
1051 bind(loop);
1052 cmp(Rtemp, G0); // check if current entry is used
1053 brx(Assembler::notEqual, false, pn, exception);
1054 delayed()->
1055 dec(Rmptr, delta); // otherwise advance to next entry
1056 #ifdef ASSERT
1057 { Label L;
1058 // ensure that Rmptr has not somehow stepped below Rlimit
1059 cmp_and_brx_short(Rmptr, Rlimit, Assembler::greaterEqualUnsigned, pn, L);
1060 stop("ran off the end of the monitor stack");
1061 bind(L);
1062 }
1063 #endif
1064 bind(entry);
1065 cmp(Rmptr, Rlimit); // check if bottom reached
1066 brx(Assembler::notEqual, true, pn, loop); // if not at bottom then check this entry
1067 delayed()->
1068 ld_ptr(Rmptr, BasicObjectLock::obj_offset_in_bytes() - delta, Rtemp);
1069 }
1070
1071 bind(no_unlock);
1072 pop(state);
1073 interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
1074 }
1075
1076 void InterpreterMacroAssembler::narrow(Register result) {
1077
1078 ld_ptr(Address(Lmethod, Method::const_offset()), G3_scratch);
1079 ldub(G3_scratch, in_bytes(ConstMethod::result_type_offset()), G3_scratch);
1080
1081 Label notBool, notByte, notChar, done;
1082
1083 // common case first
1084 cmp(G3_scratch, T_INT);
1085 br(Assembler::equal, true, pn, done);
1086 delayed()->nop();
1087
1088 cmp(G3_scratch, T_BOOLEAN);
1089 br(Assembler::notEqual, true, pn, notBool);
1090 delayed()->cmp(G3_scratch, T_BYTE);
1091 and3(result, 1, result);
1092 ba(done);
1093 delayed()->nop();
1094
1095 bind(notBool);
1096 // cmp(G3_scratch, T_BYTE);
1097 br(Assembler::notEqual, true, pn, notByte);
1098 delayed()->cmp(G3_scratch, T_CHAR);
1099 sll(result, 24, result);
1100 sra(result, 24, result);
1101 ba(done);
1102 delayed()->nop();
1103
1104 bind(notByte);
1105 // cmp(G3_scratch, T_CHAR);
1106 sll(result, 16, result);
1107 br(Assembler::notEqual, true, pn, done);
1108 delayed()->sra(result, 16, result);
1109 // sll(result, 16, result);
1110 srl(result, 16, result);
1111
1112 // bind(notChar);
1113 // must be short, instructions already executed in delay slot
1114 // sll(result, 16, result);
1115 // sra(result, 16, result);
1116
1117 bind(done);
1118 }
1119
1120 // remove activation
1121 //
1122 // Unlock the receiver if this is a synchronized method.
1123 // Unlock any Java monitors from syncronized blocks.
1124 // Remove the activation from the stack.
1125 //
1126 // If there are locked Java monitors
1127 // If throw_monitor_exception
1128 // throws IllegalMonitorStateException
1129 // Else if install_monitor_exception
1130 // installs IllegalMonitorStateException
1131 // Else
1132 // no error processing
1133 void InterpreterMacroAssembler::remove_activation(TosState state,
1134 bool throw_monitor_exception,
1135 bool install_monitor_exception) {
1136
1137 unlock_if_synchronized_method(state, throw_monitor_exception, install_monitor_exception);
1138
1139 // save result (push state before jvmti call and pop it afterwards) and notify jvmti
1140 notify_method_exit(false, state, NotifyJVMTI);
1141
1142 if (StackReservedPages > 0) {
1143 // testing if Stack Reserved Area needs to be re-enabled
1144 Label no_reserved_zone_enabling;
1145 ld_ptr(G2_thread, JavaThread::reserved_stack_activation_offset(), G3_scratch);
1146 cmp_and_brx_short(SP, G3_scratch, Assembler::lessUnsigned, Assembler::pt, no_reserved_zone_enabling);
1147
1148 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::enable_stack_reserved_zone), G2_thread);
1149 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_delayed_StackOverflowError), G2_thread);
1150 should_not_reach_here();
1151
1152 bind(no_reserved_zone_enabling);
1153 }
1154
1155 interp_verify_oop(Otos_i, state, __FILE__, __LINE__);
1156 verify_thread();
1157
1158 // return tos
1159 assert(Otos_l1 == Otos_i, "adjust code below");
1160 switch (state) {
1161 case ltos: mov(Otos_l, Otos_l->after_save()); break; // O0 -> I0
1162 case btos: // fall through
1163 case ztos: // fall through
1164 case ctos:
1165 case stos: // fall through
1166 case atos: // fall through
1167 case itos: mov(Otos_l1, Otos_l1->after_save()); break; // O0 -> I0
1168 case ftos: // fall through
1169 case dtos: // fall through
1170 case vtos: /* nothing to do */ break;
1171 default : ShouldNotReachHere();
1172 }
1173 }
1174
1175 // Lock object
1176 //
1177 // Argument - lock_reg points to the BasicObjectLock to be used for locking,
1178 // it must be initialized with the object to lock
1179 void InterpreterMacroAssembler::lock_object(Register lock_reg, Register Object) {
1180 if (UseHeavyMonitors) {
1181 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
1182 }
1183 else {
1184 Register obj_reg = Object;
1185 Register mark_reg = G4_scratch;
1186 Register temp_reg = G1_scratch;
1187 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes());
1188 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes());
1189 Label done;
1190
1191 Label slow_case;
1192
1193 assert_different_registers(lock_reg, obj_reg, mark_reg, temp_reg);
1194
1195 // load markOop from object into mark_reg
1196 ld_ptr(mark_addr, mark_reg);
1197
1198 if (UseBiasedLocking) {
1199 biased_locking_enter(obj_reg, mark_reg, temp_reg, done, &slow_case);
1200 }
1201
1202 // get the address of basicLock on stack that will be stored in the object
1203 // we need a temporary register here as we do not want to clobber lock_reg
1204 // (cas clobbers the destination register)
1205 mov(lock_reg, temp_reg);
1206 // set mark reg to be (markOop of object | UNLOCK_VALUE)
1207 or3(mark_reg, markOopDesc::unlocked_value, mark_reg);
1208 // initialize the box (Must happen before we update the object mark!)
1209 st_ptr(mark_reg, lock_addr, BasicLock::displaced_header_offset_in_bytes());
1210 // compare and exchange object_addr, markOop | 1, stack address of basicLock
1211 assert(mark_addr.disp() == 0, "cas must take a zero displacement");
1212 cas_ptr(mark_addr.base(), mark_reg, temp_reg);
1213
1214 // if the compare and exchange succeeded we are done (we saw an unlocked object)
1215 cmp_and_brx_short(mark_reg, temp_reg, Assembler::equal, Assembler::pt, done);
1216
1217 // We did not see an unlocked object so try the fast recursive case
1218
1219 // Check if owner is self by comparing the value in the markOop of object
1220 // with the stack pointer
1221 sub(temp_reg, SP, temp_reg);
1222 sub(temp_reg, STACK_BIAS, temp_reg);
1223 assert(os::vm_page_size() > 0xfff, "page size too small - change the constant");
1224
1225 // Composite "andcc" test:
1226 // (a) %sp -vs- markword proximity check, and,
1227 // (b) verify mark word LSBs == 0 (Stack-locked).
1228 //
1229 // FFFFF003/FFFFFFFFFFFF003 is (markOopDesc::lock_mask_in_place | -os::vm_page_size())
1230 // Note that the page size used for %sp proximity testing is arbitrary and is
1231 // unrelated to the actual MMU page size. We use a 'logical' page size of
1232 // 4096 bytes. F..FFF003 is designed to fit conveniently in the SIMM13 immediate
1233 // field of the andcc instruction.
1234 andcc (temp_reg, 0xFFFFF003, G0) ;
1235
1236 // if condition is true we are done and hence we can store 0 in the displaced
1237 // header indicating it is a recursive lock and be done
1238 brx(Assembler::zero, true, Assembler::pt, done);
1239 delayed()->st_ptr(G0, lock_addr, BasicLock::displaced_header_offset_in_bytes());
1240
1241 // none of the above fast optimizations worked so we have to get into the
1242 // slow case of monitor enter
1243 bind(slow_case);
1244 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorenter), lock_reg);
1245
1246 bind(done);
1247 }
1248 }
1249
1250 // Unlocks an object. Used in monitorexit bytecode and remove_activation.
1251 //
1252 // Argument - lock_reg points to the BasicObjectLock for lock
1253 // Throw IllegalMonitorException if object is not locked by current thread
1254 void InterpreterMacroAssembler::unlock_object(Register lock_reg) {
1255 if (UseHeavyMonitors) {
1256 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
1257 } else {
1258 Register obj_reg = G3_scratch;
1259 Register mark_reg = G4_scratch;
1260 Register displaced_header_reg = G1_scratch;
1261 Address lockobj_addr(lock_reg, BasicObjectLock::obj_offset_in_bytes());
1262 Address mark_addr(obj_reg, oopDesc::mark_offset_in_bytes());
1263 Label done;
1264
1265 if (UseBiasedLocking) {
1266 // load the object out of the BasicObjectLock
1267 ld_ptr(lockobj_addr, obj_reg);
1268 biased_locking_exit(mark_addr, mark_reg, done, true);
1269 st_ptr(G0, lockobj_addr); // free entry
1270 }
1271
1272 // Test first if we are in the fast recursive case
1273 Address lock_addr(lock_reg, BasicObjectLock::lock_offset_in_bytes() + BasicLock::displaced_header_offset_in_bytes());
1274 ld_ptr(lock_addr, displaced_header_reg);
1275 br_null(displaced_header_reg, true, Assembler::pn, done);
1276 delayed()->st_ptr(G0, lockobj_addr); // free entry
1277
1278 // See if it is still a light weight lock, if so we just unlock
1279 // the object and we are done
1280
1281 if (!UseBiasedLocking) {
1282 // load the object out of the BasicObjectLock
1283 ld_ptr(lockobj_addr, obj_reg);
1284 }
1285
1286 // we have the displaced header in displaced_header_reg
1287 // we expect to see the stack address of the basicLock in case the
1288 // lock is still a light weight lock (lock_reg)
1289 assert(mark_addr.disp() == 0, "cas must take a zero displacement");
1290 cas_ptr(mark_addr.base(), lock_reg, displaced_header_reg);
1291 cmp(lock_reg, displaced_header_reg);
1292 brx(Assembler::equal, true, Assembler::pn, done);
1293 delayed()->st_ptr(G0, lockobj_addr); // free entry
1294
1295 // The lock has been converted into a heavy lock and hence
1296 // we need to get into the slow case
1297
1298 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::monitorexit), lock_reg);
1299
1300 bind(done);
1301 }
1302 }
1303
1304 // Get the method data pointer from the Method* and set the
1305 // specified register to its value.
1306
1307 void InterpreterMacroAssembler::set_method_data_pointer() {
1308 assert(ProfileInterpreter, "must be profiling interpreter");
1309 Label get_continue;
1310
1311 ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr);
1312 test_method_data_pointer(get_continue);
1313 add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr);
1314 bind(get_continue);
1315 }
1316
1317 // Set the method data pointer for the current bcp.
1318
1319 void InterpreterMacroAssembler::set_method_data_pointer_for_bcp() {
1320 assert(ProfileInterpreter, "must be profiling interpreter");
1321 Label zero_continue;
1322
1323 // Test MDO to avoid the call if it is NULL.
1324 ld_ptr(Lmethod, in_bytes(Method::method_data_offset()), ImethodDataPtr);
1325 test_method_data_pointer(zero_continue);
1326 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::bcp_to_di), Lmethod, Lbcp);
1327 add(ImethodDataPtr, in_bytes(MethodData::data_offset()), ImethodDataPtr);
1328 add(ImethodDataPtr, O0, ImethodDataPtr);
1329 bind(zero_continue);
1330 }
1331
1332 // Test ImethodDataPtr. If it is null, continue at the specified label
1333
1334 void InterpreterMacroAssembler::test_method_data_pointer(Label& zero_continue) {
1335 assert(ProfileInterpreter, "must be profiling interpreter");
1336 br_null_short(ImethodDataPtr, Assembler::pn, zero_continue);
1337 }
1338
1339 void InterpreterMacroAssembler::verify_method_data_pointer() {
1340 assert(ProfileInterpreter, "must be profiling interpreter");
1341 #ifdef ASSERT
1342 Label verify_continue;
1343 test_method_data_pointer(verify_continue);
1344
1345 // If the mdp is valid, it will point to a DataLayout header which is
1346 // consistent with the bcp. The converse is highly probable also.
1347 lduh(ImethodDataPtr, in_bytes(DataLayout::bci_offset()), G3_scratch);
1348 ld_ptr(Lmethod, Method::const_offset(), O5);
1349 add(G3_scratch, in_bytes(ConstMethod::codes_offset()), G3_scratch);
1350 add(G3_scratch, O5, G3_scratch);
1351 cmp(Lbcp, G3_scratch);
1352 brx(Assembler::equal, false, Assembler::pt, verify_continue);
1353
1354 Register temp_reg = O5;
1355 delayed()->mov(ImethodDataPtr, temp_reg);
1356 // %%% should use call_VM_leaf here?
1357 //call_VM_leaf(noreg, ..., Lmethod, Lbcp, ImethodDataPtr);
1358 save_frame_and_mov(sizeof(jdouble) / wordSize, Lmethod, O0, Lbcp, O1);
1359 Address d_save(FP, -sizeof(jdouble) + STACK_BIAS);
1360 stf(FloatRegisterImpl::D, Ftos_d, d_save);
1361 mov(temp_reg->after_save(), O2);
1362 save_thread(L7_thread_cache);
1363 call(CAST_FROM_FN_PTR(address, InterpreterRuntime::verify_mdp), relocInfo::none);
1364 delayed()->nop();
1365 restore_thread(L7_thread_cache);
1366 ldf(FloatRegisterImpl::D, d_save, Ftos_d);
1367 restore();
1368 bind(verify_continue);
1369 #endif // ASSERT
1370 }
1371
1372 void InterpreterMacroAssembler::test_invocation_counter_for_mdp(Register invocation_count,
1373 Register method_counters,
1374 Register Rtmp,
1375 Label &profile_continue) {
1376 assert(ProfileInterpreter, "must be profiling interpreter");
1377 // Control will flow to "profile_continue" if the counter is less than the
1378 // limit or if we call profile_method()
1379
1380 Label done;
1381
1382 // if no method data exists, and the counter is high enough, make one
1383 br_notnull_short(ImethodDataPtr, Assembler::pn, done);
1384
1385 // Test to see if we should create a method data oop
1386 Address profile_limit(method_counters, MethodCounters::interpreter_profile_limit_offset());
1387 ld(profile_limit, Rtmp);
1388 cmp(invocation_count, Rtmp);
1389 // Use long branches because call_VM() code and following code generated by
1390 // test_backedge_count_for_osr() is large in debug VM.
1391 br(Assembler::lessUnsigned, false, Assembler::pn, profile_continue);
1392 delayed()->nop();
1393
1394 // Build it now.
1395 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
1396 set_method_data_pointer_for_bcp();
1397 ba(profile_continue);
1398 delayed()->nop();
1399 bind(done);
1400 }
1401
1402 // Store a value at some constant offset from the method data pointer.
1403
1404 void InterpreterMacroAssembler::set_mdp_data_at(int constant, Register value) {
1405 assert(ProfileInterpreter, "must be profiling interpreter");
1406 st_ptr(value, ImethodDataPtr, constant);
1407 }
1408
1409 void InterpreterMacroAssembler::increment_mdp_data_at(Address counter,
1410 Register bumped_count,
1411 bool decrement) {
1412 assert(ProfileInterpreter, "must be profiling interpreter");
1413
1414 // Load the counter.
1415 ld_ptr(counter, bumped_count);
1416
1417 if (decrement) {
1418 // Decrement the register. Set condition codes.
1419 subcc(bumped_count, DataLayout::counter_increment, bumped_count);
1420
1421 // If the decrement causes the counter to overflow, stay negative
1422 Label L;
1423 brx(Assembler::negative, true, Assembler::pn, L);
1424
1425 // Store the decremented counter, if it is still negative.
1426 delayed()->st_ptr(bumped_count, counter);
1427 bind(L);
1428 } else {
1429 // Increment the register. Set carry flag.
1430 addcc(bumped_count, DataLayout::counter_increment, bumped_count);
1431
1432 // If the increment causes the counter to overflow, pull back by 1.
1433 assert(DataLayout::counter_increment == 1, "subc works");
1434 subc(bumped_count, G0, bumped_count);
1435
1436 // Store the incremented counter.
1437 st_ptr(bumped_count, counter);
1438 }
1439 }
1440
1441 // Increment the value at some constant offset from the method data pointer.
1442
1443 void InterpreterMacroAssembler::increment_mdp_data_at(int constant,
1444 Register bumped_count,
1445 bool decrement) {
1446 // Locate the counter at a fixed offset from the mdp:
1447 Address counter(ImethodDataPtr, constant);
1448 increment_mdp_data_at(counter, bumped_count, decrement);
1449 }
1450
1451 // Increment the value at some non-fixed (reg + constant) offset from
1452 // the method data pointer.
1453
1454 void InterpreterMacroAssembler::increment_mdp_data_at(Register reg,
1455 int constant,
1456 Register bumped_count,
1457 Register scratch2,
1458 bool decrement) {
1459 // Add the constant to reg to get the offset.
1460 add(ImethodDataPtr, reg, scratch2);
1461 Address counter(scratch2, constant);
1462 increment_mdp_data_at(counter, bumped_count, decrement);
1463 }
1464
1465 // Set a flag value at the current method data pointer position.
1466 // Updates a single byte of the header, to avoid races with other header bits.
1467
1468 void InterpreterMacroAssembler::set_mdp_flag_at(int flag_constant,
1469 Register scratch) {
1470 assert(ProfileInterpreter, "must be profiling interpreter");
1471 // Load the data header
1472 ldub(ImethodDataPtr, in_bytes(DataLayout::flags_offset()), scratch);
1473
1474 // Set the flag
1475 or3(scratch, flag_constant, scratch);
1476
1477 // Store the modified header.
1478 stb(scratch, ImethodDataPtr, in_bytes(DataLayout::flags_offset()));
1479 }
1480
1481 // Test the location at some offset from the method data pointer.
1482 // If it is not equal to value, branch to the not_equal_continue Label.
1483 // Set condition codes to match the nullness of the loaded value.
1484
1485 void InterpreterMacroAssembler::test_mdp_data_at(int offset,
1486 Register value,
1487 Label& not_equal_continue,
1488 Register scratch) {
1489 assert(ProfileInterpreter, "must be profiling interpreter");
1490 ld_ptr(ImethodDataPtr, offset, scratch);
1491 cmp(value, scratch);
1492 brx(Assembler::notEqual, false, Assembler::pn, not_equal_continue);
1493 delayed()->tst(scratch);
1494 }
1495
1496 // Update the method data pointer by the displacement located at some fixed
1497 // offset from the method data pointer.
1498
1499 void InterpreterMacroAssembler::update_mdp_by_offset(int offset_of_disp,
1500 Register scratch) {
1501 assert(ProfileInterpreter, "must be profiling interpreter");
1502 ld_ptr(ImethodDataPtr, offset_of_disp, scratch);
1503 add(ImethodDataPtr, scratch, ImethodDataPtr);
1504 }
1505
1506 // Update the method data pointer by the displacement located at the
1507 // offset (reg + offset_of_disp).
1508
1509 void InterpreterMacroAssembler::update_mdp_by_offset(Register reg,
1510 int offset_of_disp,
1511 Register scratch) {
1512 assert(ProfileInterpreter, "must be profiling interpreter");
1513 add(reg, offset_of_disp, scratch);
1514 ld_ptr(ImethodDataPtr, scratch, scratch);
1515 add(ImethodDataPtr, scratch, ImethodDataPtr);
1516 }
1517
1518 // Update the method data pointer by a simple constant displacement.
1519
1520 void InterpreterMacroAssembler::update_mdp_by_constant(int constant) {
1521 assert(ProfileInterpreter, "must be profiling interpreter");
1522 add(ImethodDataPtr, constant, ImethodDataPtr);
1523 }
1524
1525 // Update the method data pointer for a _ret bytecode whose target
1526 // was not among our cached targets.
1527
1528 void InterpreterMacroAssembler::update_mdp_for_ret(TosState state,
1529 Register return_bci) {
1530 assert(ProfileInterpreter, "must be profiling interpreter");
1531 push(state);
1532 st_ptr(return_bci, l_tmp); // protect return_bci, in case it is volatile
1533 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::update_mdp_for_ret), return_bci);
1534 ld_ptr(l_tmp, return_bci);
1535 pop(state);
1536 }
1537
1538 // Count a taken branch in the bytecodes.
1539
1540 void InterpreterMacroAssembler::profile_taken_branch(Register scratch, Register bumped_count) {
1541 if (ProfileInterpreter) {
1542 Label profile_continue;
1543
1544 // If no method data exists, go to profile_continue.
1545 test_method_data_pointer(profile_continue);
1546
1547 // We are taking a branch. Increment the taken count.
1548 increment_mdp_data_at(in_bytes(JumpData::taken_offset()), bumped_count);
1549
1550 // The method data pointer needs to be updated to reflect the new target.
1551 update_mdp_by_offset(in_bytes(JumpData::displacement_offset()), scratch);
1552 bind (profile_continue);
1553 }
1554 }
1555
1556
1557 // Count a not-taken branch in the bytecodes.
1558
1559 void InterpreterMacroAssembler::profile_not_taken_branch(Register scratch) {
1560 if (ProfileInterpreter) {
1561 Label profile_continue;
1562
1563 // If no method data exists, go to profile_continue.
1564 test_method_data_pointer(profile_continue);
1565
1566 // We are taking a branch. Increment the not taken count.
1567 increment_mdp_data_at(in_bytes(BranchData::not_taken_offset()), scratch);
1568
1569 // The method data pointer needs to be updated to correspond to the
1570 // next bytecode.
1571 update_mdp_by_constant(in_bytes(BranchData::branch_data_size()));
1572 bind (profile_continue);
1573 }
1574 }
1575
1576
1577 // Count a non-virtual call in the bytecodes.
1578
1579 void InterpreterMacroAssembler::profile_call(Register scratch) {
1580 if (ProfileInterpreter) {
1581 Label profile_continue;
1582
1583 // If no method data exists, go to profile_continue.
1584 test_method_data_pointer(profile_continue);
1585
1586 // We are making a call. Increment the count.
1587 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch);
1588
1589 // The method data pointer needs to be updated to reflect the new target.
1590 update_mdp_by_constant(in_bytes(CounterData::counter_data_size()));
1591 bind (profile_continue);
1592 }
1593 }
1594
1595
1596 // Count a final call in the bytecodes.
1597
1598 void InterpreterMacroAssembler::profile_final_call(Register scratch) {
1599 if (ProfileInterpreter) {
1600 Label profile_continue;
1601
1602 // If no method data exists, go to profile_continue.
1603 test_method_data_pointer(profile_continue);
1604
1605 // We are making a call. Increment the count.
1606 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch);
1607
1608 // The method data pointer needs to be updated to reflect the new target.
1609 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size()));
1610 bind (profile_continue);
1611 }
1612 }
1613
1614
1615 // Count a virtual call in the bytecodes.
1616
1617 void InterpreterMacroAssembler::profile_virtual_call(Register receiver,
1618 Register scratch,
1619 bool receiver_can_be_null) {
1620 if (ProfileInterpreter) {
1621 Label profile_continue;
1622
1623 // If no method data exists, go to profile_continue.
1624 test_method_data_pointer(profile_continue);
1625
1626
1627 Label skip_receiver_profile;
1628 if (receiver_can_be_null) {
1629 Label not_null;
1630 br_notnull_short(receiver, Assembler::pt, not_null);
1631 // We are making a call. Increment the count for null receiver.
1632 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch);
1633 ba_short(skip_receiver_profile);
1634 bind(not_null);
1635 }
1636
1637 // Record the receiver type.
1638 record_klass_in_profile(receiver, scratch, true);
1639 bind(skip_receiver_profile);
1640
1641 // The method data pointer needs to be updated to reflect the new target.
1642 #if INCLUDE_JVMCI
1643 if (MethodProfileWidth == 0) {
1644 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size()));
1645 }
1646 #else
1647 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size()));
1648 #endif
1649 bind(profile_continue);
1650 }
1651 }
1652
1653 #if INCLUDE_JVMCI
1654 void InterpreterMacroAssembler::profile_called_method(Register method, Register scratch) {
1655 assert_different_registers(method, scratch);
1656 if (ProfileInterpreter && MethodProfileWidth > 0) {
1657 Label profile_continue;
1658
1659 // If no method data exists, go to profile_continue.
1660 test_method_data_pointer(profile_continue);
1661
1662 Label done;
1663 record_item_in_profile_helper(method, scratch, 0, done, MethodProfileWidth,
1664 &VirtualCallData::method_offset, &VirtualCallData::method_count_offset, in_bytes(VirtualCallData::nonprofiled_receiver_count_offset()));
1665 bind(done);
1666
1667 update_mdp_by_constant(in_bytes(VirtualCallData::virtual_call_data_size()));
1668 bind(profile_continue);
1669 }
1670 }
1671 #endif // INCLUDE_JVMCI
1672
1673 void InterpreterMacroAssembler::record_klass_in_profile_helper(Register receiver, Register scratch,
1674 Label& done, bool is_virtual_call) {
1675 if (TypeProfileWidth == 0) {
1676 if (is_virtual_call) {
1677 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch);
1678 }
1679 #if INCLUDE_JVMCI
1680 else if (EnableJVMCI) {
1681 increment_mdp_data_at(in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset()), scratch);
1682 }
1683 #endif
1684 } else {
1685 int non_profiled_offset = -1;
1686 if (is_virtual_call) {
1687 non_profiled_offset = in_bytes(CounterData::count_offset());
1688 }
1689 #if INCLUDE_JVMCI
1690 else if (EnableJVMCI) {
1691 non_profiled_offset = in_bytes(ReceiverTypeData::nonprofiled_receiver_count_offset());
1692 }
1693 #endif
1694
1695 record_item_in_profile_helper(receiver, scratch, 0, done, TypeProfileWidth,
1696 &VirtualCallData::receiver_offset, &VirtualCallData::receiver_count_offset, non_profiled_offset);
1697 }
1698 }
1699
1700 void InterpreterMacroAssembler::record_item_in_profile_helper(Register item,
1701 Register scratch, int start_row, Label& done, int total_rows,
1702 OffsetFunction item_offset_fn, OffsetFunction item_count_offset_fn,
1703 int non_profiled_offset) {
1704 int last_row = total_rows - 1;
1705 assert(start_row <= last_row, "must be work left to do");
1706 // Test this row for both the item and for null.
1707 // Take any of three different outcomes:
1708 // 1. found item => increment count and goto done
1709 // 2. found null => keep looking for case 1, maybe allocate this cell
1710 // 3. found something else => keep looking for cases 1 and 2
1711 // Case 3 is handled by a recursive call.
1712 for (int row = start_row; row <= last_row; row++) {
1713 Label next_test;
1714 bool test_for_null_also = (row == start_row);
1715
1716 // See if the item is item[n].
1717 int item_offset = in_bytes(item_offset_fn(row));
1718 test_mdp_data_at(item_offset, item, next_test, scratch);
1719 // delayed()->tst(scratch);
1720
1721 // The receiver is item[n]. Increment count[n].
1722 int count_offset = in_bytes(item_count_offset_fn(row));
1723 increment_mdp_data_at(count_offset, scratch);
1724 ba_short(done);
1725 bind(next_test);
1726
1727 if (test_for_null_also) {
1728 Label found_null;
1729 // Failed the equality check on item[n]... Test for null.
1730 if (start_row == last_row) {
1731 // The only thing left to do is handle the null case.
1732 if (non_profiled_offset >= 0) {
1733 brx(Assembler::zero, false, Assembler::pn, found_null);
1734 delayed()->nop();
1735 // Item did not match any saved item and there is no empty row for it.
1736 // Increment total counter to indicate polymorphic case.
1737 increment_mdp_data_at(non_profiled_offset, scratch);
1738 ba_short(done);
1739 bind(found_null);
1740 } else {
1741 brx(Assembler::notZero, false, Assembler::pt, done);
1742 delayed()->nop();
1743 }
1744 break;
1745 }
1746 // Since null is rare, make it be the branch-taken case.
1747 brx(Assembler::zero, false, Assembler::pn, found_null);
1748 delayed()->nop();
1749
1750 // Put all the "Case 3" tests here.
1751 record_item_in_profile_helper(item, scratch, start_row + 1, done, total_rows,
1752 item_offset_fn, item_count_offset_fn, non_profiled_offset);
1753
1754 // Found a null. Keep searching for a matching item,
1755 // but remember that this is an empty (unused) slot.
1756 bind(found_null);
1757 }
1758 }
1759
1760 // In the fall-through case, we found no matching item, but we
1761 // observed the item[start_row] is NULL.
1762
1763 // Fill in the item field and increment the count.
1764 int item_offset = in_bytes(item_offset_fn(start_row));
1765 set_mdp_data_at(item_offset, item);
1766 int count_offset = in_bytes(item_count_offset_fn(start_row));
1767 mov(DataLayout::counter_increment, scratch);
1768 set_mdp_data_at(count_offset, scratch);
1769 if (start_row > 0) {
1770 ba_short(done);
1771 }
1772 }
1773
1774 void InterpreterMacroAssembler::record_klass_in_profile(Register receiver,
1775 Register scratch, bool is_virtual_call) {
1776 assert(ProfileInterpreter, "must be profiling");
1777 Label done;
1778
1779 record_klass_in_profile_helper(receiver, scratch, done, is_virtual_call);
1780
1781 bind (done);
1782 }
1783
1784
1785 // Count a ret in the bytecodes.
1786
1787 void InterpreterMacroAssembler::profile_ret(TosState state,
1788 Register return_bci,
1789 Register scratch) {
1790 if (ProfileInterpreter) {
1791 Label profile_continue;
1792 uint row;
1793
1794 // If no method data exists, go to profile_continue.
1795 test_method_data_pointer(profile_continue);
1796
1797 // Update the total ret count.
1798 increment_mdp_data_at(in_bytes(CounterData::count_offset()), scratch);
1799
1800 for (row = 0; row < RetData::row_limit(); row++) {
1801 Label next_test;
1802
1803 // See if return_bci is equal to bci[n]:
1804 test_mdp_data_at(in_bytes(RetData::bci_offset(row)),
1805 return_bci, next_test, scratch);
1806
1807 // return_bci is equal to bci[n]. Increment the count.
1808 increment_mdp_data_at(in_bytes(RetData::bci_count_offset(row)), scratch);
1809
1810 // The method data pointer needs to be updated to reflect the new target.
1811 update_mdp_by_offset(in_bytes(RetData::bci_displacement_offset(row)), scratch);
1812 ba_short(profile_continue);
1813 bind(next_test);
1814 }
1815
1816 update_mdp_for_ret(state, return_bci);
1817
1818 bind (profile_continue);
1819 }
1820 }
1821
1822 // Profile an unexpected null in the bytecodes.
1823 void InterpreterMacroAssembler::profile_null_seen(Register scratch) {
1824 if (ProfileInterpreter) {
1825 Label profile_continue;
1826
1827 // If no method data exists, go to profile_continue.
1828 test_method_data_pointer(profile_continue);
1829
1830 set_mdp_flag_at(BitData::null_seen_byte_constant(), scratch);
1831
1832 // The method data pointer needs to be updated.
1833 int mdp_delta = in_bytes(BitData::bit_data_size());
1834 if (TypeProfileCasts) {
1835 mdp_delta = in_bytes(ReceiverTypeData::receiver_type_data_size());
1836 }
1837 update_mdp_by_constant(mdp_delta);
1838
1839 bind (profile_continue);
1840 }
1841 }
1842
1843 void InterpreterMacroAssembler::profile_typecheck(Register klass,
1844 Register scratch) {
1845 if (ProfileInterpreter) {
1846 Label profile_continue;
1847
1848 // If no method data exists, go to profile_continue.
1849 test_method_data_pointer(profile_continue);
1850
1851 int mdp_delta = in_bytes(BitData::bit_data_size());
1852 if (TypeProfileCasts) {
1853 mdp_delta = in_bytes(ReceiverTypeData::receiver_type_data_size());
1854
1855 // Record the object type.
1856 record_klass_in_profile(klass, scratch, false);
1857 }
1858
1859 // The method data pointer needs to be updated.
1860 update_mdp_by_constant(mdp_delta);
1861
1862 bind (profile_continue);
1863 }
1864 }
1865
1866 void InterpreterMacroAssembler::profile_typecheck_failed(Register scratch) {
1867 if (ProfileInterpreter && TypeProfileCasts) {
1868 Label profile_continue;
1869
1870 // If no method data exists, go to profile_continue.
1871 test_method_data_pointer(profile_continue);
1872
1873 int count_offset = in_bytes(CounterData::count_offset());
1874 // Back up the address, since we have already bumped the mdp.
1875 count_offset -= in_bytes(ReceiverTypeData::receiver_type_data_size());
1876
1877 // *Decrement* the counter. We expect to see zero or small negatives.
1878 increment_mdp_data_at(count_offset, scratch, true);
1879
1880 bind (profile_continue);
1881 }
1882 }
1883
1884 // Count the default case of a switch construct.
1885
1886 void InterpreterMacroAssembler::profile_switch_default(Register scratch) {
1887 if (ProfileInterpreter) {
1888 Label profile_continue;
1889
1890 // If no method data exists, go to profile_continue.
1891 test_method_data_pointer(profile_continue);
1892
1893 // Update the default case count
1894 increment_mdp_data_at(in_bytes(MultiBranchData::default_count_offset()),
1895 scratch);
1896
1897 // The method data pointer needs to be updated.
1898 update_mdp_by_offset(
1899 in_bytes(MultiBranchData::default_displacement_offset()),
1900 scratch);
1901
1902 bind (profile_continue);
1903 }
1904 }
1905
1906 // Count the index'th case of a switch construct.
1907
1908 void InterpreterMacroAssembler::profile_switch_case(Register index,
1909 Register scratch,
1910 Register scratch2,
1911 Register scratch3) {
1912 if (ProfileInterpreter) {
1913 Label profile_continue;
1914
1915 // If no method data exists, go to profile_continue.
1916 test_method_data_pointer(profile_continue);
1917
1918 // Build the base (index * per_case_size_in_bytes()) + case_array_offset_in_bytes()
1919 set(in_bytes(MultiBranchData::per_case_size()), scratch);
1920 smul(index, scratch, scratch);
1921 add(scratch, in_bytes(MultiBranchData::case_array_offset()), scratch);
1922
1923 // Update the case count
1924 increment_mdp_data_at(scratch,
1925 in_bytes(MultiBranchData::relative_count_offset()),
1926 scratch2,
1927 scratch3);
1928
1929 // The method data pointer needs to be updated.
1930 update_mdp_by_offset(scratch,
1931 in_bytes(MultiBranchData::relative_displacement_offset()),
1932 scratch2);
1933
1934 bind (profile_continue);
1935 }
1936 }
1937
1938 void InterpreterMacroAssembler::profile_obj_type(Register obj, const Address& mdo_addr, Register tmp) {
1939 Label not_null, do_nothing, do_update;
1940
1941 assert_different_registers(obj, mdo_addr.base(), tmp);
1942
1943 verify_oop(obj);
1944
1945 ld_ptr(mdo_addr, tmp);
1946
1947 br_notnull_short(obj, pt, not_null);
1948 or3(tmp, TypeEntries::null_seen, tmp);
1949 ba_short(do_update);
1950
1951 bind(not_null);
1952 load_klass(obj, obj);
1953
1954 xor3(obj, tmp, obj);
1955 btst(TypeEntries::type_klass_mask, obj);
1956 // klass seen before, nothing to do. The unknown bit may have been
1957 // set already but no need to check.
1958 brx(zero, false, pt, do_nothing);
1959 delayed()->
1960
1961 btst(TypeEntries::type_unknown, obj);
1962 // already unknown. Nothing to do anymore.
1963 brx(notZero, false, pt, do_nothing);
1964 delayed()->
1965
1966 btst(TypeEntries::type_mask, tmp);
1967 brx(zero, true, pt, do_update);
1968 // first time here. Set profile type.
1969 delayed()->or3(tmp, obj, tmp);
1970
1971 // different than before. Cannot keep accurate profile.
1972 or3(tmp, TypeEntries::type_unknown, tmp);
1973
1974 bind(do_update);
1975 // update profile
1976 st_ptr(tmp, mdo_addr);
1977
1978 bind(do_nothing);
1979 }
1980
1981 void InterpreterMacroAssembler::profile_arguments_type(Register callee, Register tmp1, Register tmp2, bool is_virtual) {
1982 if (!ProfileInterpreter) {
1983 return;
1984 }
1985
1986 assert_different_registers(callee, tmp1, tmp2, ImethodDataPtr);
1987
1988 if (MethodData::profile_arguments() || MethodData::profile_return()) {
1989 Label profile_continue;
1990
1991 test_method_data_pointer(profile_continue);
1992
1993 int off_to_start = is_virtual ? in_bytes(VirtualCallData::virtual_call_data_size()) : in_bytes(CounterData::counter_data_size());
1994
1995 ldub(ImethodDataPtr, in_bytes(DataLayout::tag_offset()) - off_to_start, tmp1);
1996 cmp_and_br_short(tmp1, is_virtual ? DataLayout::virtual_call_type_data_tag : DataLayout::call_type_data_tag, notEqual, pn, profile_continue);
1997
1998 if (MethodData::profile_arguments()) {
1999 Label done;
2000 int off_to_args = in_bytes(TypeEntriesAtCall::args_data_offset());
2001 add(ImethodDataPtr, off_to_args, ImethodDataPtr);
2002
2003 for (int i = 0; i < TypeProfileArgsLimit; i++) {
2004 if (i > 0 || MethodData::profile_return()) {
2005 // If return value type is profiled we may have no argument to profile
2006 ld_ptr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, tmp1);
2007 sub(tmp1, i*TypeStackSlotEntries::per_arg_count(), tmp1);
2008 cmp_and_br_short(tmp1, TypeStackSlotEntries::per_arg_count(), less, pn, done);
2009 }
2010 ld_ptr(Address(callee, Method::const_offset()), tmp1);
2011 lduh(Address(tmp1, ConstMethod::size_of_parameters_offset()), tmp1);
2012 // stack offset o (zero based) from the start of the argument
2013 // list, for n arguments translates into offset n - o - 1 from
2014 // the end of the argument list. But there's an extra slot at
2015 // the stop of the stack. So the offset is n - o from Lesp.
2016 ld_ptr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::stack_slot_offset(i))-off_to_args, tmp2);
2017 sub(tmp1, tmp2, tmp1);
2018
2019 // Can't use MacroAssembler::argument_address() which needs Gargs to be set up
2020 sll(tmp1, Interpreter::logStackElementSize, tmp1);
2021 ld_ptr(Lesp, tmp1, tmp1);
2022
2023 Address mdo_arg_addr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::argument_type_offset(i))-off_to_args);
2024 profile_obj_type(tmp1, mdo_arg_addr, tmp2);
2025
2026 int to_add = in_bytes(TypeStackSlotEntries::per_arg_size());
2027 add(ImethodDataPtr, to_add, ImethodDataPtr);
2028 off_to_args += to_add;
2029 }
2030
2031 if (MethodData::profile_return()) {
2032 ld_ptr(ImethodDataPtr, in_bytes(TypeEntriesAtCall::cell_count_offset())-off_to_args, tmp1);
2033 sub(tmp1, TypeProfileArgsLimit*TypeStackSlotEntries::per_arg_count(), tmp1);
2034 }
2035
2036 bind(done);
2037
2038 if (MethodData::profile_return()) {
2039 // We're right after the type profile for the last
2040 // argument. tmp1 is the number of cells left in the
2041 // CallTypeData/VirtualCallTypeData to reach its end. Non null
2042 // if there's a return to profile.
2043 assert(ReturnTypeEntry::static_cell_count() < TypeStackSlotEntries::per_arg_count(), "can't move past ret type");
2044 sll(tmp1, exact_log2(DataLayout::cell_size), tmp1);
2045 add(ImethodDataPtr, tmp1, ImethodDataPtr);
2046 }
2047 } else {
2048 assert(MethodData::profile_return(), "either profile call args or call ret");
2049 update_mdp_by_constant(in_bytes(TypeEntriesAtCall::return_only_size()));
2050 }
2051
2052 // mdp points right after the end of the
2053 // CallTypeData/VirtualCallTypeData, right after the cells for the
2054 // return value type if there's one.
2055
2056 bind(profile_continue);
2057 }
2058 }
2059
2060 void InterpreterMacroAssembler::profile_return_type(Register ret, Register tmp1, Register tmp2) {
2061 assert_different_registers(ret, tmp1, tmp2);
2062 if (ProfileInterpreter && MethodData::profile_return()) {
2063 Label profile_continue, done;
2064
2065 test_method_data_pointer(profile_continue);
2066
2067 if (MethodData::profile_return_jsr292_only()) {
2068 assert(Method::intrinsic_id_size_in_bytes() == 2, "assuming Method::_intrinsic_id is u2");
2069
2070 // If we don't profile all invoke bytecodes we must make sure
2071 // it's a bytecode we indeed profile. We can't go back to the
2072 // begining of the ProfileData we intend to update to check its
2073 // type because we're right after it and we don't known its
2074 // length.
2075 Label do_profile;
2076 ldub(Lbcp, 0, tmp1);
2077 cmp_and_br_short(tmp1, Bytecodes::_invokedynamic, equal, pn, do_profile);
2078 cmp(tmp1, Bytecodes::_invokehandle);
2079 br(equal, false, pn, do_profile);
2080 delayed()->lduh(Lmethod, Method::intrinsic_id_offset_in_bytes(), tmp1);
2081 cmp_and_br_short(tmp1, vmIntrinsics::_compiledLambdaForm, notEqual, pt, profile_continue);
2082
2083 bind(do_profile);
2084 }
2085
2086 Address mdo_ret_addr(ImethodDataPtr, -in_bytes(ReturnTypeEntry::size()));
2087 mov(ret, tmp1);
2088 profile_obj_type(tmp1, mdo_ret_addr, tmp2);
2089
2090 bind(profile_continue);
2091 }
2092 }
2093
2094 void InterpreterMacroAssembler::profile_parameters_type(Register tmp1, Register tmp2, Register tmp3, Register tmp4) {
2095 if (ProfileInterpreter && MethodData::profile_parameters()) {
2096 Label profile_continue, done;
2097
2098 test_method_data_pointer(profile_continue);
2099
2100 // Load the offset of the area within the MDO used for
2101 // parameters. If it's negative we're not profiling any parameters.
2102 lduw(ImethodDataPtr, in_bytes(MethodData::parameters_type_data_di_offset()) - in_bytes(MethodData::data_offset()), tmp1);
2103 cmp_and_br_short(tmp1, 0, less, pn, profile_continue);
2104
2105 // Compute a pointer to the area for parameters from the offset
2106 // and move the pointer to the slot for the last
2107 // parameters. Collect profiling from last parameter down.
2108 // mdo start + parameters offset + array length - 1
2109
2110 // Pointer to the parameter area in the MDO
2111 Register mdp = tmp1;
2112 add(ImethodDataPtr, tmp1, mdp);
2113
2114 // offset of the current profile entry to update
2115 Register entry_offset = tmp2;
2116 // entry_offset = array len in number of cells
2117 ld_ptr(mdp, ArrayData::array_len_offset(), entry_offset);
2118
2119 int off_base = in_bytes(ParametersTypeData::stack_slot_offset(0));
2120 assert(off_base % DataLayout::cell_size == 0, "should be a number of cells");
2121
2122 // entry_offset (number of cells) = array len - size of 1 entry + offset of the stack slot field
2123 sub(entry_offset, TypeStackSlotEntries::per_arg_count() - (off_base / DataLayout::cell_size), entry_offset);
2124 // entry_offset in bytes
2125 sll(entry_offset, exact_log2(DataLayout::cell_size), entry_offset);
2126
2127 Label loop;
2128 bind(loop);
2129
2130 // load offset on the stack from the slot for this parameter
2131 ld_ptr(mdp, entry_offset, tmp3);
2132 sll(tmp3,Interpreter::logStackElementSize, tmp3);
2133 neg(tmp3);
2134 // read the parameter from the local area
2135 ld_ptr(Llocals, tmp3, tmp3);
2136
2137 // make entry_offset now point to the type field for this parameter
2138 int type_base = in_bytes(ParametersTypeData::type_offset(0));
2139 assert(type_base > off_base, "unexpected");
2140 add(entry_offset, type_base - off_base, entry_offset);
2141
2142 // profile the parameter
2143 Address arg_type(mdp, entry_offset);
2144 profile_obj_type(tmp3, arg_type, tmp4);
2145
2146 // go to next parameter
2147 sub(entry_offset, TypeStackSlotEntries::per_arg_count() * DataLayout::cell_size + (type_base - off_base), entry_offset);
2148 cmp_and_br_short(entry_offset, off_base, greaterEqual, pt, loop);
2149
2150 bind(profile_continue);
2151 }
2152 }
2153
2154 // add a InterpMonitorElem to stack (see frame_sparc.hpp)
2155
2156 void InterpreterMacroAssembler::add_monitor_to_stack( bool stack_is_empty,
2157 Register Rtemp,
2158 Register Rtemp2 ) {
2159
2160 Register Rlimit = Lmonitors;
2161 const jint delta = frame::interpreter_frame_monitor_size() * wordSize;
2162 assert( (delta & LongAlignmentMask) == 0,
2163 "sizeof BasicObjectLock must be even number of doublewords");
2164
2165 sub( SP, delta, SP);
2166 sub( Lesp, delta, Lesp);
2167 sub( Lmonitors, delta, Lmonitors);
2168
2169 if (!stack_is_empty) {
2170
2171 // must copy stack contents down
2172
2173 Label start_copying, next;
2174
2175 // untested("monitor stack expansion");
2176 compute_stack_base(Rtemp);
2177 ba(start_copying);
2178 delayed()->cmp(Rtemp, Rlimit); // done? duplicated below
2179
2180 // note: must copy from low memory upwards
2181 // On entry to loop,
2182 // Rtemp points to new base of stack, Lesp points to new end of stack (1 past TOS)
2183 // Loop mutates Rtemp
2184
2185 bind( next);
2186
2187 st_ptr(Rtemp2, Rtemp, 0);
2188 inc(Rtemp, wordSize);
2189 cmp(Rtemp, Rlimit); // are we done? (duplicated above)
2190
2191 bind( start_copying );
2192
2193 brx( notEqual, true, pn, next );
2194 delayed()->ld_ptr( Rtemp, delta, Rtemp2 );
2195
2196 // done copying stack
2197 }
2198 }
2199
2200 // Locals
2201 void InterpreterMacroAssembler::access_local_ptr( Register index, Register dst ) {
2202 assert_not_delayed();
2203 sll(index, Interpreter::logStackElementSize, index);
2204 sub(Llocals, index, index);
2205 ld_ptr(index, 0, dst);
2206 // Note: index must hold the effective address--the iinc template uses it
2207 }
2208
2209 // Just like access_local_ptr but the tag is a returnAddress
2210 void InterpreterMacroAssembler::access_local_returnAddress(Register index,
2211 Register dst ) {
2212 assert_not_delayed();
2213 sll(index, Interpreter::logStackElementSize, index);
2214 sub(Llocals, index, index);
2215 ld_ptr(index, 0, dst);
2216 }
2217
2218 void InterpreterMacroAssembler::access_local_int( Register index, Register dst ) {
2219 assert_not_delayed();
2220 sll(index, Interpreter::logStackElementSize, index);
2221 sub(Llocals, index, index);
2222 ld(index, 0, dst);
2223 // Note: index must hold the effective address--the iinc template uses it
2224 }
2225
2226
2227 void InterpreterMacroAssembler::access_local_long( Register index, Register dst ) {
2228 assert_not_delayed();
2229 sll(index, Interpreter::logStackElementSize, index);
2230 sub(Llocals, index, index);
2231 // First half stored at index n+1 (which grows down from Llocals[n])
2232 load_unaligned_long(index, Interpreter::local_offset_in_bytes(1), dst);
2233 }
2234
2235
2236 void InterpreterMacroAssembler::access_local_float( Register index, FloatRegister dst ) {
2237 assert_not_delayed();
2238 sll(index, Interpreter::logStackElementSize, index);
2239 sub(Llocals, index, index);
2240 ldf(FloatRegisterImpl::S, index, 0, dst);
2241 }
2242
2243
2244 void InterpreterMacroAssembler::access_local_double( Register index, FloatRegister dst ) {
2245 assert_not_delayed();
2246 sll(index, Interpreter::logStackElementSize, index);
2247 sub(Llocals, index, index);
2248 load_unaligned_double(index, Interpreter::local_offset_in_bytes(1), dst);
2249 }
2250
2251
2252 #ifdef ASSERT
2253 void InterpreterMacroAssembler::check_for_regarea_stomp(Register Rindex, int offset, Register Rlimit, Register Rscratch, Register Rscratch1) {
2254 Label L;
2255
2256 assert(Rindex != Rscratch, "Registers cannot be same");
2257 assert(Rindex != Rscratch1, "Registers cannot be same");
2258 assert(Rlimit != Rscratch, "Registers cannot be same");
2259 assert(Rlimit != Rscratch1, "Registers cannot be same");
2260 assert(Rscratch1 != Rscratch, "Registers cannot be same");
2261
2262 // untested("reg area corruption");
2263 add(Rindex, offset, Rscratch);
2264 add(Rlimit, 64 + STACK_BIAS, Rscratch1);
2265 cmp_and_brx_short(Rscratch, Rscratch1, Assembler::greaterEqualUnsigned, pn, L);
2266 stop("regsave area is being clobbered");
2267 bind(L);
2268 }
2269 #endif // ASSERT
2270
2271
2272 void InterpreterMacroAssembler::store_local_int( Register index, Register src ) {
2273 assert_not_delayed();
2274 sll(index, Interpreter::logStackElementSize, index);
2275 sub(Llocals, index, index);
2276 debug_only(check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch);)
2277 st(src, index, 0);
2278 }
2279
2280 void InterpreterMacroAssembler::store_local_ptr( Register index, Register src ) {
2281 assert_not_delayed();
2282 sll(index, Interpreter::logStackElementSize, index);
2283 sub(Llocals, index, index);
2284 #ifdef ASSERT
2285 check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch);
2286 #endif
2287 st_ptr(src, index, 0);
2288 }
2289
2290
2291
2292 void InterpreterMacroAssembler::store_local_ptr( int n, Register src ) {
2293 st_ptr(src, Llocals, Interpreter::local_offset_in_bytes(n));
2294 }
2295
2296 void InterpreterMacroAssembler::store_local_long( Register index, Register src ) {
2297 assert_not_delayed();
2298 sll(index, Interpreter::logStackElementSize, index);
2299 sub(Llocals, index, index);
2300 #ifdef ASSERT
2301 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch);
2302 #endif
2303 store_unaligned_long(src, index, Interpreter::local_offset_in_bytes(1)); // which is n+1
2304 }
2305
2306
2307 void InterpreterMacroAssembler::store_local_float( Register index, FloatRegister src ) {
2308 assert_not_delayed();
2309 sll(index, Interpreter::logStackElementSize, index);
2310 sub(Llocals, index, index);
2311 #ifdef ASSERT
2312 check_for_regarea_stomp(index, 0, FP, G1_scratch, G4_scratch);
2313 #endif
2314 stf(FloatRegisterImpl::S, src, index, 0);
2315 }
2316
2317
2318 void InterpreterMacroAssembler::store_local_double( Register index, FloatRegister src ) {
2319 assert_not_delayed();
2320 sll(index, Interpreter::logStackElementSize, index);
2321 sub(Llocals, index, index);
2322 #ifdef ASSERT
2323 check_for_regarea_stomp(index, Interpreter::local_offset_in_bytes(1), FP, G1_scratch, G4_scratch);
2324 #endif
2325 store_unaligned_double(src, index, Interpreter::local_offset_in_bytes(1));
2326 }
2327
2328
2329 int InterpreterMacroAssembler::top_most_monitor_byte_offset() {
2330 const jint delta = frame::interpreter_frame_monitor_size() * wordSize;
2331 int rounded_vm_local_words = align_up((int)frame::interpreter_frame_vm_local_words, WordsPerLong);
2332 return ((-rounded_vm_local_words * wordSize) - delta ) + STACK_BIAS;
2333 }
2334
2335
2336 Address InterpreterMacroAssembler::top_most_monitor() {
2337 return Address(FP, top_most_monitor_byte_offset());
2338 }
2339
2340
2341 void InterpreterMacroAssembler::compute_stack_base( Register Rdest ) {
2342 add( Lesp, wordSize, Rdest );
2343 }
2344
2345 void InterpreterMacroAssembler::get_method_counters(Register method,
2346 Register Rcounters,
2347 Label& skip) {
2348 Label has_counters;
2349 Address method_counters(method, in_bytes(Method::method_counters_offset()));
2350 ld_ptr(method_counters, Rcounters);
2351 br_notnull_short(Rcounters, Assembler::pt, has_counters);
2352 call_VM(noreg, CAST_FROM_FN_PTR(address,
2353 InterpreterRuntime::build_method_counters), method);
2354 ld_ptr(method_counters, Rcounters);
2355 br_null(Rcounters, false, Assembler::pn, skip); // No MethodCounters, OutOfMemory
2356 delayed()->nop();
2357 bind(has_counters);
2358 }
2359
2360 void InterpreterMacroAssembler::increment_invocation_counter( Register Rcounters, Register Rtmp, Register Rtmp2 ) {
2361 assert(UseCompiler || LogTouchedMethods, "incrementing must be useful");
2362 assert_different_registers(Rcounters, Rtmp, Rtmp2);
2363
2364 Address inv_counter(Rcounters, MethodCounters::invocation_counter_offset() +
2365 InvocationCounter::counter_offset());
2366 Address be_counter (Rcounters, MethodCounters::backedge_counter_offset() +
2367 InvocationCounter::counter_offset());
2368 int delta = InvocationCounter::count_increment;
2369
2370 // Load each counter in a register
2371 ld( inv_counter, Rtmp );
2372 ld( be_counter, Rtmp2 );
2373
2374 assert( is_simm13( delta ), " delta too large.");
2375
2376 // Add the delta to the invocation counter and store the result
2377 add( Rtmp, delta, Rtmp );
2378
2379 // Mask the backedge counter
2380 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 );
2381
2382 // Store value
2383 st( Rtmp, inv_counter);
2384
2385 // Add invocation counter + backedge counter
2386 add( Rtmp, Rtmp2, Rtmp);
2387
2388 // Note that this macro must leave the backedge_count + invocation_count in Rtmp!
2389 }
2390
2391 void InterpreterMacroAssembler::increment_backedge_counter( Register Rcounters, Register Rtmp, Register Rtmp2 ) {
2392 assert(UseCompiler, "incrementing must be useful");
2393 assert_different_registers(Rcounters, Rtmp, Rtmp2);
2394
2395 Address be_counter (Rcounters, MethodCounters::backedge_counter_offset() +
2396 InvocationCounter::counter_offset());
2397 Address inv_counter(Rcounters, MethodCounters::invocation_counter_offset() +
2398 InvocationCounter::counter_offset());
2399
2400 int delta = InvocationCounter::count_increment;
2401 // Load each counter in a register
2402 ld( be_counter, Rtmp );
2403 ld( inv_counter, Rtmp2 );
2404
2405 // Add the delta to the backedge counter
2406 add( Rtmp, delta, Rtmp );
2407
2408 // Mask the invocation counter, add to backedge counter
2409 and3( Rtmp2, InvocationCounter::count_mask_value, Rtmp2 );
2410
2411 // and store the result to memory
2412 st( Rtmp, be_counter );
2413
2414 // Add backedge + invocation counter
2415 add( Rtmp, Rtmp2, Rtmp );
2416
2417 // Note that this macro must leave backedge_count + invocation_count in Rtmp!
2418 }
2419
2420 void InterpreterMacroAssembler::test_backedge_count_for_osr( Register backedge_count,
2421 Register method_counters,
2422 Register branch_bcp,
2423 Register Rtmp ) {
2424 Label did_not_overflow;
2425 Label overflow_with_error;
2426 assert_different_registers(backedge_count, Rtmp, branch_bcp);
2427 assert(UseOnStackReplacement,"Must UseOnStackReplacement to test_backedge_count_for_osr");
2428
2429 Address limit(method_counters, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset()));
2430 ld(limit, Rtmp);
2431 cmp_and_br_short(backedge_count, Rtmp, Assembler::lessUnsigned, Assembler::pt, did_not_overflow);
2432
2433 // When ProfileInterpreter is on, the backedge_count comes from the
2434 // MethodData*, which value does not get reset on the call to
2435 // frequency_counter_overflow(). To avoid excessive calls to the overflow
2436 // routine while the method is being compiled, add a second test to make sure
2437 // the overflow function is called only once every overflow_frequency.
2438 if (ProfileInterpreter) {
2439 const int overflow_frequency = 1024;
2440 andcc(backedge_count, overflow_frequency-1, Rtmp);
2441 brx(Assembler::notZero, false, Assembler::pt, did_not_overflow);
2442 delayed()->nop();
2443 }
2444
2445 // overflow in loop, pass branch bytecode
2446 set(6,Rtmp);
2447 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), branch_bcp, Rtmp);
2448
2449 // Was an OSR adapter generated?
2450 // O0 = osr nmethod
2451 br_null_short(O0, Assembler::pn, overflow_with_error);
2452
2453 // Has the nmethod been invalidated already?
2454 ldub(O0, nmethod::state_offset(), O2);
2455 cmp_and_br_short(O2, nmethod::in_use, Assembler::notEqual, Assembler::pn, overflow_with_error);
2456
2457 // migrate the interpreter frame off of the stack
2458
2459 mov(G2_thread, L7);
2460 // save nmethod
2461 mov(O0, L6);
2462 set_last_Java_frame(SP, noreg);
2463 call_VM_leaf(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin), L7);
2464 reset_last_Java_frame();
2465 mov(L7, G2_thread);
2466
2467 // move OSR nmethod to I1
2468 mov(L6, I1);
2469
2470 // OSR buffer to I0
2471 mov(O0, I0);
2472
2473 // remove the interpreter frame
2474 restore(I5_savedSP, 0, SP);
2475
2476 // Jump to the osr code.
2477 ld_ptr(O1, nmethod::osr_entry_point_offset(), O2);
2478 jmp(O2, G0);
2479 delayed()->nop();
2480
2481 bind(overflow_with_error);
2482
2483 bind(did_not_overflow);
2484 }
2485
2486
2487
2488 void InterpreterMacroAssembler::interp_verify_oop(Register reg, TosState state, const char * file, int line) {
2489 if (state == atos) { MacroAssembler::_verify_oop(reg, "broken oop ", file, line); }
2490 }
2491
2492
2493 // local helper function for the verify_oop_or_return_address macro
2494 static bool verify_return_address(Method* m, int bci) {
2495 #ifndef PRODUCT
2496 address pc = (address)(m->constMethod())
2497 + in_bytes(ConstMethod::codes_offset()) + bci;
2498 // assume it is a valid return address if it is inside m and is preceded by a jsr
2499 if (!m->contains(pc)) return false;
2500 address jsr_pc;
2501 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr);
2502 if (*jsr_pc == Bytecodes::_jsr && jsr_pc >= m->code_base()) return true;
2503 jsr_pc = pc - Bytecodes::length_for(Bytecodes::_jsr_w);
2504 if (*jsr_pc == Bytecodes::_jsr_w && jsr_pc >= m->code_base()) return true;
2505 #endif // PRODUCT
2506 return false;
2507 }
2508
2509
2510 void InterpreterMacroAssembler::verify_oop_or_return_address(Register reg, Register Rtmp) {
2511 if (!VerifyOops) return;
2512 // the VM documentation for the astore[_wide] bytecode allows
2513 // the TOS to be not only an oop but also a return address
2514 Label test;
2515 Label skip;
2516 // See if it is an address (in the current method):
2517
2518 mov(reg, Rtmp);
2519 const int log2_bytecode_size_limit = 16;
2520 srl(Rtmp, log2_bytecode_size_limit, Rtmp);
2521 br_notnull_short( Rtmp, pt, test );
2522
2523 // %%% should use call_VM_leaf here?
2524 save_frame_and_mov(0, Lmethod, O0, reg, O1);
2525 save_thread(L7_thread_cache);
2526 call(CAST_FROM_FN_PTR(address,verify_return_address), relocInfo::none);
2527 delayed()->nop();
2528 restore_thread(L7_thread_cache);
2529 br_notnull( O0, false, pt, skip );
2530 delayed()->restore();
2531
2532 // Perform a more elaborate out-of-line call
2533 // Not an address; verify it:
2534 bind(test);
2535 verify_oop(reg);
2536 bind(skip);
2537 }
2538
2539
2540 void InterpreterMacroAssembler::verify_FPU(int stack_depth, TosState state) {
2541 if (state == ftos || state == dtos) MacroAssembler::verify_FPU(stack_depth);
2542 }
2543
2544
2545 // Jump if ((*counter_addr += increment) & mask) satisfies the condition.
2546 void InterpreterMacroAssembler::increment_mask_and_jump(Address counter_addr,
2547 int increment, Address mask_addr,
2548 Register scratch1, Register scratch2,
2549 Condition cond, Label *where) {
2550 ld(counter_addr, scratch1);
2551 add(scratch1, increment, scratch1);
2552 ld(mask_addr, scratch2);
2553 andcc(scratch1, scratch2, G0);
2554 br(cond, false, Assembler::pn, *where);
2555 delayed()->st(scratch1, counter_addr);
2556 }
2557
2558 // Inline assembly for:
2559 //
2560 // if (thread is in interp_only_mode) {
2561 // InterpreterRuntime::post_method_entry();
2562 // }
2563 // if (DTraceMethodProbes) {
2564 // SharedRuntime::dtrace_method_entry(method, receiver);
2565 // }
2566 // if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) {
2567 // SharedRuntime::rc_trace_method_entry(method, receiver);
2568 // }
2569
2570 void InterpreterMacroAssembler::notify_method_entry() {
2571
2572 // Whenever JVMTI puts a thread in interp_only_mode, method
2573 // entry/exit events are sent for that thread to track stack
2574 // depth. If it is possible to enter interp_only_mode we add
2575 // the code to check if the event should be sent.
2576 if (JvmtiExport::can_post_interpreter_events()) {
2577 Label L;
2578 Register temp_reg = O5;
2579 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset());
2580 ld(interp_only, temp_reg);
2581 cmp_and_br_short(temp_reg, 0, equal, pt, L);
2582 call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_entry));
2583 bind(L);
2584 }
2585
2586 {
2587 Register temp_reg = O5;
2588 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero);
2589 call_VM_leaf(noreg,
2590 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry),
2591 G2_thread, Lmethod);
2592 }
2593
2594 // RedefineClasses() tracing support for obsolete method entry
2595 if (log_is_enabled(Trace, redefine, class, obsolete)) {
2596 call_VM_leaf(noreg,
2597 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry),
2598 G2_thread, Lmethod);
2599 }
2600 }
2601
2602
2603 // Inline assembly for:
2604 //
2605 // if (thread is in interp_only_mode) {
2606 // // save result
2607 // InterpreterRuntime::post_method_exit();
2608 // // restore result
2609 // }
2610 // if (DTraceMethodProbes) {
2611 // SharedRuntime::dtrace_method_exit(thread, method);
2612 // }
2613 //
2614 // Native methods have their result stored in d_tmp and l_tmp
2615 // Java methods have their result stored in the expression stack
2616
2617 void InterpreterMacroAssembler::notify_method_exit(bool is_native_method,
2618 TosState state,
2619 NotifyMethodExitMode mode) {
2620
2621 // Whenever JVMTI puts a thread in interp_only_mode, method
2622 // entry/exit events are sent for that thread to track stack
2623 // depth. If it is possible to enter interp_only_mode we add
2624 // the code to check if the event should be sent.
2625 if (mode == NotifyJVMTI && JvmtiExport::can_post_interpreter_events()) {
2626 Label L;
2627 Register temp_reg = O5;
2628 const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset());
2629 ld(interp_only, temp_reg);
2630 cmp_and_br_short(temp_reg, 0, equal, pt, L);
2631
2632 // Note: frame::interpreter_frame_result has a dependency on how the
2633 // method result is saved across the call to post_method_exit. For
2634 // native methods it assumes the result registers are saved to
2635 // l_scratch and d_scratch. If this changes then the interpreter_frame_result
2636 // implementation will need to be updated too.
2637
2638 save_return_value(state, is_native_method);
2639 call_VM(noreg,
2640 CAST_FROM_FN_PTR(address, InterpreterRuntime::post_method_exit));
2641 restore_return_value(state, is_native_method);
2642 bind(L);
2643 }
2644
2645 {
2646 Register temp_reg = O5;
2647 // Dtrace notification
2648 SkipIfEqual skip_if(this, temp_reg, &DTraceMethodProbes, zero);
2649 save_return_value(state, is_native_method);
2650 call_VM_leaf(
2651 noreg,
2652 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit),
2653 G2_thread, Lmethod);
2654 restore_return_value(state, is_native_method);
2655 }
2656 }
2657
2658 void InterpreterMacroAssembler::save_return_value(TosState state, bool is_native_call) {
2659 if (is_native_call) {
2660 stf(FloatRegisterImpl::D, F0, d_tmp);
2661 stx(O0, l_tmp);
2662 } else {
2663 push(state);
2664 }
2665 }
2666
2667 void InterpreterMacroAssembler::restore_return_value( TosState state, bool is_native_call) {
2668 if (is_native_call) {
2669 ldf(FloatRegisterImpl::D, d_tmp, F0);
2670 ldx(l_tmp, O0);
2671 } else {
2672 pop(state);
2673 }
2674 }