1 /*
2 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "asm/assembler.hpp"
28 #include "c1/c1_CodeStubs.hpp"
29 #include "c1/c1_Defs.hpp"
30 #include "c1/c1_MacroAssembler.hpp"
31 #include "c1/c1_Runtime1.hpp"
32 #include "compiler/disassembler.hpp"
33 #include "gc/shared/cardTable.hpp"
34 #include "gc/shared/cardTableBarrierSet.hpp"
35 #include "interpreter/interpreter.hpp"
36 #include "nativeInst_aarch64.hpp"
37 #include "oops/compiledICHolder.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "prims/jvmtiExport.hpp"
40 #include "register_aarch64.hpp"
41 #include "runtime/sharedRuntime.hpp"
42 #include "runtime/signature.hpp"
43 #include "runtime/vframe.hpp"
44 #include "runtime/vframeArray.hpp"
45 #include "vmreg_aarch64.inline.hpp"
46 #if INCLUDE_ALL_GCS
47 #include "gc/g1/g1BarrierSet.hpp"
48 #include "gc/g1/g1CardTable.hpp"
49 #include "gc/g1/g1ThreadLocalData.hpp"
50 #endif
51
52
53 // Implementation of StubAssembler
54
55 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, int args_size) {
56 // setup registers
57 assert(!(oop_result1->is_valid() || metadata_result->is_valid()) || oop_result1 != metadata_result, "registers must be different");
58 assert(oop_result1 != rthread && metadata_result != rthread, "registers must be different");
59 assert(args_size >= 0, "illegal args_size");
60 bool align_stack = false;
61
62 mov(c_rarg0, rthread);
63 set_num_rt_args(0); // Nothing on stack
64
65 Label retaddr;
66 set_last_Java_frame(sp, rfp, retaddr, rscratch1);
67
68 // do the call
69 lea(rscratch1, RuntimeAddress(entry));
70 blrt(rscratch1, args_size + 1, 8, 1);
71 bind(retaddr);
72 int call_offset = offset();
73 // verify callee-saved register
74 #ifdef ASSERT
75 push(r0, sp);
76 { Label L;
77 get_thread(r0);
78 cmp(rthread, r0);
79 br(Assembler::EQ, L);
80 stop("StubAssembler::call_RT: rthread not callee saved?");
81 bind(L);
82 }
83 pop(r0, sp);
84 #endif
85 reset_last_Java_frame(true);
86 maybe_isb();
87
88 // check for pending exceptions
89 { Label L;
90 // check for pending exceptions (java_thread is set upon return)
91 ldr(rscratch1, Address(rthread, in_bytes(Thread::pending_exception_offset())));
92 cbz(rscratch1, L);
93 // exception pending => remove activation and forward to exception handler
94 // make sure that the vm_results are cleared
95 if (oop_result1->is_valid()) {
96 str(zr, Address(rthread, JavaThread::vm_result_offset()));
97 }
98 if (metadata_result->is_valid()) {
99 str(zr, Address(rthread, JavaThread::vm_result_2_offset()));
100 }
101 if (frame_size() == no_frame_size) {
102 leave();
103 far_jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
104 } else if (_stub_id == Runtime1::forward_exception_id) {
105 should_not_reach_here();
106 } else {
107 far_jump(RuntimeAddress(Runtime1::entry_for(Runtime1::forward_exception_id)));
108 }
109 bind(L);
110 }
111 // get oop results if there are any and reset the values in the thread
112 if (oop_result1->is_valid()) {
113 get_vm_result(oop_result1, rthread);
114 }
115 if (metadata_result->is_valid()) {
116 get_vm_result_2(metadata_result, rthread);
117 }
118 return call_offset;
119 }
120
121
122 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1) {
123 mov(c_rarg1, arg1);
124 return call_RT(oop_result1, metadata_result, entry, 1);
125 }
126
127
128 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2) {
129 if (c_rarg1 == arg2) {
130 if (c_rarg2 == arg1) {
131 mov(rscratch1, arg1);
132 mov(arg1, arg2);
133 mov(arg2, rscratch1);
134 } else {
135 mov(c_rarg2, arg2);
136 mov(c_rarg1, arg1);
137 }
138 } else {
139 mov(c_rarg1, arg1);
140 mov(c_rarg2, arg2);
141 }
142 return call_RT(oop_result1, metadata_result, entry, 2);
143 }
144
145
146 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3) {
147 // if there is any conflict use the stack
148 if (arg1 == c_rarg2 || arg1 == c_rarg3 ||
149 arg2 == c_rarg1 || arg1 == c_rarg3 ||
150 arg3 == c_rarg1 || arg1 == c_rarg2) {
151 stp(arg3, arg2, Address(pre(sp, 2 * wordSize)));
152 stp(arg1, zr, Address(pre(sp, -2 * wordSize)));
153 ldp(c_rarg1, zr, Address(post(sp, 2 * wordSize)));
154 ldp(c_rarg3, c_rarg2, Address(post(sp, 2 * wordSize)));
155 } else {
156 mov(c_rarg1, arg1);
157 mov(c_rarg2, arg2);
158 mov(c_rarg3, arg3);
159 }
160 return call_RT(oop_result1, metadata_result, entry, 3);
161 }
162
163 // Implementation of StubFrame
164
165 class StubFrame: public StackObj {
166 private:
167 StubAssembler* _sasm;
168
169 public:
170 StubFrame(StubAssembler* sasm, const char* name, bool must_gc_arguments);
171 void load_argument(int offset_in_words, Register reg);
172
173 ~StubFrame();
174 };;
175
176
177 #define __ _sasm->
178
179 StubFrame::StubFrame(StubAssembler* sasm, const char* name, bool must_gc_arguments) {
180 _sasm = sasm;
181 __ set_info(name, must_gc_arguments);
182 __ enter();
183 }
184
185 // load parameters that were stored with LIR_Assembler::store_parameter
186 // Note: offsets for store_parameter and load_argument must match
187 void StubFrame::load_argument(int offset_in_words, Register reg) {
188 // rbp, + 0: link
189 // + 1: return address
190 // + 2: argument with offset 0
191 // + 3: argument with offset 1
192 // + 4: ...
193
194 __ ldr(reg, Address(rfp, (offset_in_words + 2) * BytesPerWord));
195 }
196
197
198 StubFrame::~StubFrame() {
199 __ leave();
200 __ ret(lr);
201 }
202
203 #undef __
204
205
206 // Implementation of Runtime1
207
208 #define __ sasm->
209
210 const int float_regs_as_doubles_size_in_slots = pd_nof_fpu_regs_frame_map * 2;
211
212 // Stack layout for saving/restoring all the registers needed during a runtime
213 // call (this includes deoptimization)
214 // Note: note that users of this frame may well have arguments to some runtime
215 // while these values are on the stack. These positions neglect those arguments
216 // but the code in save_live_registers will take the argument count into
217 // account.
218 //
219
220 enum reg_save_layout {
221 reg_save_frame_size = 32 /* float */ + 32 /* integer */
222 };
223
224 // Save off registers which might be killed by calls into the runtime.
225 // Tries to smart of about FP registers. In particular we separate
226 // saving and describing the FPU registers for deoptimization since we
227 // have to save the FPU registers twice if we describe them. The
228 // deopt blob is the only thing which needs to describe FPU registers.
229 // In all other cases it should be sufficient to simply save their
230 // current value.
231
232 static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs];
233 static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs];
234 static int reg_save_size_in_words;
235 static int frame_size_in_bytes = -1;
236
237 static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) {
238 int frame_size_in_bytes = reg_save_frame_size * BytesPerWord;
239 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
240 int frame_size_in_slots = frame_size_in_bytes / sizeof(jint);
241 OopMap* oop_map = new OopMap(frame_size_in_slots, 0);
242
243 for (int i = 0; i < FrameMap::nof_cpu_regs; i++) {
244 Register r = as_Register(i);
245 if (i <= 18 && i != rscratch1->encoding() && i != rscratch2->encoding()) {
246 int sp_offset = cpu_reg_save_offsets[i];
247 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
248 r->as_VMReg());
249 }
250 }
251
252 if (save_fpu_registers) {
253 for (int i = 0; i < FrameMap::nof_fpu_regs; i++) {
254 FloatRegister r = as_FloatRegister(i);
255 {
256 int sp_offset = fpu_reg_save_offsets[i];
257 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
258 r->as_VMReg());
259 }
260 }
261 }
262 return oop_map;
263 }
264
265 static OopMap* save_live_registers(StubAssembler* sasm,
266 bool save_fpu_registers = true) {
267 __ block_comment("save_live_registers");
268
269 __ push(RegSet::range(r0, r29), sp); // integer registers except lr & sp
270
271 if (save_fpu_registers) {
272 for (int i = 30; i >= 0; i -= 2)
273 __ stpd(as_FloatRegister(i), as_FloatRegister(i+1),
274 Address(__ pre(sp, -2 * wordSize)));
275 } else {
276 __ add(sp, sp, -32 * wordSize);
277 }
278
279 return generate_oop_map(sasm, save_fpu_registers);
280 }
281
282 static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) {
283 if (restore_fpu_registers) {
284 for (int i = 0; i < 32; i += 2)
285 __ ldpd(as_FloatRegister(i), as_FloatRegister(i+1),
286 Address(__ post(sp, 2 * wordSize)));
287 } else {
288 __ add(sp, sp, 32 * wordSize);
289 }
290
291 __ pop(RegSet::range(r0, r29), sp);
292 }
293
294 static void restore_live_registers_except_r0(StubAssembler* sasm, bool restore_fpu_registers = true) {
295
296 if (restore_fpu_registers) {
297 for (int i = 0; i < 32; i += 2)
298 __ ldpd(as_FloatRegister(i), as_FloatRegister(i+1),
299 Address(__ post(sp, 2 * wordSize)));
300 } else {
301 __ add(sp, sp, 32 * wordSize);
302 }
303
304 __ ldp(zr, r1, Address(__ post(sp, 16)));
305 __ pop(RegSet::range(r2, r29), sp);
306 }
307
308
309
310 void Runtime1::initialize_pd() {
311 int i;
312 int sp_offset = 0;
313
314 // all float registers are saved explicitly
315 assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here");
316 for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
317 fpu_reg_save_offsets[i] = sp_offset;
318 sp_offset += 2; // SP offsets are in halfwords
319 }
320
321 for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
322 Register r = as_Register(i);
323 cpu_reg_save_offsets[i] = sp_offset;
324 sp_offset += 2; // SP offsets are in halfwords
325 }
326 }
327
328
329 // target: the entry point of the method that creates and posts the exception oop
330 // has_argument: true if the exception needs an argument (passed in rscratch1)
331
332 OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) {
333 // make a frame and preserve the caller's caller-save registers
334 OopMap* oop_map = save_live_registers(sasm);
335 int call_offset;
336 if (!has_argument) {
337 call_offset = __ call_RT(noreg, noreg, target);
338 } else {
339 call_offset = __ call_RT(noreg, noreg, target, rscratch1);
340 }
341 OopMapSet* oop_maps = new OopMapSet();
342 oop_maps->add_gc_map(call_offset, oop_map);
343
344 __ should_not_reach_here();
345 return oop_maps;
346 }
347
348
349 OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler *sasm) {
350 __ block_comment("generate_handle_exception");
351
352 // incoming parameters
353 const Register exception_oop = r0;
354 const Register exception_pc = r3;
355 // other registers used in this stub
356
357 // Save registers, if required.
358 OopMapSet* oop_maps = new OopMapSet();
359 OopMap* oop_map = NULL;
360 switch (id) {
361 case forward_exception_id:
362 // We're handling an exception in the context of a compiled frame.
363 // The registers have been saved in the standard places. Perform
364 // an exception lookup in the caller and dispatch to the handler
365 // if found. Otherwise unwind and dispatch to the callers
366 // exception handler.
367 oop_map = generate_oop_map(sasm, 1 /*thread*/);
368
369 // load and clear pending exception oop into r0
370 __ ldr(exception_oop, Address(rthread, Thread::pending_exception_offset()));
371 __ str(zr, Address(rthread, Thread::pending_exception_offset()));
372
373 // load issuing PC (the return address for this stub) into r3
374 __ ldr(exception_pc, Address(rfp, 1*BytesPerWord));
375
376 // make sure that the vm_results are cleared (may be unnecessary)
377 __ str(zr, Address(rthread, JavaThread::vm_result_offset()));
378 __ str(zr, Address(rthread, JavaThread::vm_result_2_offset()));
379 break;
380 case handle_exception_nofpu_id:
381 case handle_exception_id:
382 // At this point all registers MAY be live.
383 oop_map = save_live_registers(sasm, id != handle_exception_nofpu_id);
384 break;
385 case handle_exception_from_callee_id: {
386 // At this point all registers except exception oop (r0) and
387 // exception pc (lr) are dead.
388 const int frame_size = 2 /*fp, return address*/;
389 oop_map = new OopMap(frame_size * VMRegImpl::slots_per_word, 0);
390 sasm->set_frame_size(frame_size);
391 break;
392 }
393 default:
394 __ should_not_reach_here();
395 break;
396 }
397
398 // verify that only r0 and r3 are valid at this time
399 __ invalidate_registers(false, true, true, false, true, true);
400 // verify that r0 contains a valid exception
401 __ verify_not_null_oop(exception_oop);
402
403 #ifdef ASSERT
404 // check that fields in JavaThread for exception oop and issuing pc are
405 // empty before writing to them
406 Label oop_empty;
407 __ ldr(rscratch1, Address(rthread, JavaThread::exception_oop_offset()));
408 __ cbz(rscratch1, oop_empty);
409 __ stop("exception oop already set");
410 __ bind(oop_empty);
411
412 Label pc_empty;
413 __ ldr(rscratch1, Address(rthread, JavaThread::exception_pc_offset()));
414 __ cbz(rscratch1, pc_empty);
415 __ stop("exception pc already set");
416 __ bind(pc_empty);
417 #endif
418
419 // save exception oop and issuing pc into JavaThread
420 // (exception handler will load it from here)
421 __ str(exception_oop, Address(rthread, JavaThread::exception_oop_offset()));
422 __ str(exception_pc, Address(rthread, JavaThread::exception_pc_offset()));
423
424 // patch throwing pc into return address (has bci & oop map)
425 __ str(exception_pc, Address(rfp, 1*BytesPerWord));
426
427 // compute the exception handler.
428 // the exception oop and the throwing pc are read from the fields in JavaThread
429 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc));
430 oop_maps->add_gc_map(call_offset, oop_map);
431
432 // r0: handler address
433 // will be the deopt blob if nmethod was deoptimized while we looked up
434 // handler regardless of whether handler existed in the nmethod.
435
436 // only r0 is valid at this time, all other registers have been destroyed by the runtime call
437 __ invalidate_registers(false, true, true, true, true, true);
438
439 // patch the return address, this stub will directly return to the exception handler
440 __ str(r0, Address(rfp, 1*BytesPerWord));
441
442 switch (id) {
443 case forward_exception_id:
444 case handle_exception_nofpu_id:
445 case handle_exception_id:
446 // Restore the registers that were saved at the beginning.
447 restore_live_registers(sasm, id != handle_exception_nofpu_id);
448 break;
449 case handle_exception_from_callee_id:
450 // Pop the return address.
451 __ leave();
452 __ ret(lr); // jump to exception handler
453 break;
454 default: ShouldNotReachHere();
455 }
456
457 return oop_maps;
458 }
459
460
461 void Runtime1::generate_unwind_exception(StubAssembler *sasm) {
462 // incoming parameters
463 const Register exception_oop = r0;
464 // callee-saved copy of exception_oop during runtime call
465 const Register exception_oop_callee_saved = r19;
466 // other registers used in this stub
467 const Register exception_pc = r3;
468 const Register handler_addr = r1;
469
470 // verify that only r0, is valid at this time
471 __ invalidate_registers(false, true, true, true, true, true);
472
473 #ifdef ASSERT
474 // check that fields in JavaThread for exception oop and issuing pc are empty
475 Label oop_empty;
476 __ ldr(rscratch1, Address(rthread, JavaThread::exception_oop_offset()));
477 __ cbz(rscratch1, oop_empty);
478 __ stop("exception oop must be empty");
479 __ bind(oop_empty);
480
481 Label pc_empty;
482 __ ldr(rscratch1, Address(rthread, JavaThread::exception_pc_offset()));
483 __ cbz(rscratch1, pc_empty);
484 __ stop("exception pc must be empty");
485 __ bind(pc_empty);
486 #endif
487
488 // Save our return address because
489 // exception_handler_for_return_address will destroy it. We also
490 // save exception_oop
491 __ stp(lr, exception_oop, Address(__ pre(sp, -2 * wordSize)));
492
493 // search the exception handler address of the caller (using the return address)
494 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), rthread, lr);
495 // r0: exception handler address of the caller
496
497 // Only R0 is valid at this time; all other registers have been
498 // destroyed by the call.
499 __ invalidate_registers(false, true, true, true, false, true);
500
501 // move result of call into correct register
502 __ mov(handler_addr, r0);
503
504 // get throwing pc (= return address).
505 // lr has been destroyed by the call
506 __ ldp(lr, exception_oop, Address(__ post(sp, 2 * wordSize)));
507 __ mov(r3, lr);
508
509 __ verify_not_null_oop(exception_oop);
510
511 // continue at exception handler (return address removed)
512 // note: do *not* remove arguments when unwinding the
513 // activation since the caller assumes having
514 // all arguments on the stack when entering the
515 // runtime to determine the exception handler
516 // (GC happens at call site with arguments!)
517 // r0: exception oop
518 // r3: throwing pc
519 // r1: exception handler
520 __ br(handler_addr);
521 }
522
523
524
525 OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
526 // use the maximum number of runtime-arguments here because it is difficult to
527 // distinguish each RT-Call.
528 // Note: This number affects also the RT-Call in generate_handle_exception because
529 // the oop-map is shared for all calls.
530 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
531 assert(deopt_blob != NULL, "deoptimization blob must have been created");
532
533 OopMap* oop_map = save_live_registers(sasm);
534
535 __ mov(c_rarg0, rthread);
536 Label retaddr;
537 __ set_last_Java_frame(sp, rfp, retaddr, rscratch1);
538 // do the call
539 __ lea(rscratch1, RuntimeAddress(target));
540 __ blrt(rscratch1, 1, 0, 1);
541 __ bind(retaddr);
542 OopMapSet* oop_maps = new OopMapSet();
543 oop_maps->add_gc_map(__ offset(), oop_map);
544 // verify callee-saved register
545 #ifdef ASSERT
546 { Label L;
547 __ get_thread(rscratch1);
548 __ cmp(rthread, rscratch1);
549 __ br(Assembler::EQ, L);
550 __ stop("StubAssembler::call_RT: rthread not callee saved?");
551 __ bind(L);
552 }
553 #endif
554 __ reset_last_Java_frame(true);
555 __ maybe_isb();
556
557 // check for pending exceptions
558 { Label L;
559 __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset()));
560 __ cbz(rscratch1, L);
561 // exception pending => remove activation and forward to exception handler
562
563 { Label L1;
564 __ cbnz(r0, L1); // have we deoptimized?
565 __ far_jump(RuntimeAddress(Runtime1::entry_for(Runtime1::forward_exception_id)));
566 __ bind(L1);
567 }
568
569 // the deopt blob expects exceptions in the special fields of
570 // JavaThread, so copy and clear pending exception.
571
572 // load and clear pending exception
573 __ ldr(r0, Address(rthread, Thread::pending_exception_offset()));
574 __ str(zr, Address(rthread, Thread::pending_exception_offset()));
575
576 // check that there is really a valid exception
577 __ verify_not_null_oop(r0);
578
579 // load throwing pc: this is the return address of the stub
580 __ mov(r3, lr);
581
582 #ifdef ASSERT
583 // check that fields in JavaThread for exception oop and issuing pc are empty
584 Label oop_empty;
585 __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset()));
586 __ cbz(rscratch1, oop_empty);
587 __ stop("exception oop must be empty");
588 __ bind(oop_empty);
589
590 Label pc_empty;
591 __ ldr(rscratch1, Address(rthread, JavaThread::exception_pc_offset()));
592 __ cbz(rscratch1, pc_empty);
593 __ stop("exception pc must be empty");
594 __ bind(pc_empty);
595 #endif
596
597 // store exception oop and throwing pc to JavaThread
598 __ str(r0, Address(rthread, JavaThread::exception_oop_offset()));
599 __ str(r3, Address(rthread, JavaThread::exception_pc_offset()));
600
601 restore_live_registers(sasm);
602
603 __ leave();
604
605 // Forward the exception directly to deopt blob. We can blow no
606 // registers and must leave throwing pc on the stack. A patch may
607 // have values live in registers so the entry point with the
608 // exception in tls.
609 __ far_jump(RuntimeAddress(deopt_blob->unpack_with_exception_in_tls()));
610
611 __ bind(L);
612 }
613
614
615 // Runtime will return true if the nmethod has been deoptimized during
616 // the patching process. In that case we must do a deopt reexecute instead.
617
618 Label reexecuteEntry, cont;
619
620 __ cbz(r0, cont); // have we deoptimized?
621
622 // Will reexecute. Proper return address is already on the stack we just restore
623 // registers, pop all of our frame but the return address and jump to the deopt blob
624 restore_live_registers(sasm);
625 __ leave();
626 __ far_jump(RuntimeAddress(deopt_blob->unpack_with_reexecution()));
627
628 __ bind(cont);
629 restore_live_registers(sasm);
630 __ leave();
631 __ ret(lr);
632
633 return oop_maps;
634 }
635
636
637 OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
638
639 const Register exception_oop = r0;
640 const Register exception_pc = r3;
641
642 // for better readability
643 const bool must_gc_arguments = true;
644 const bool dont_gc_arguments = false;
645
646 // default value; overwritten for some optimized stubs that are called from methods that do not use the fpu
647 bool save_fpu_registers = true;
648
649 // stub code & info for the different stubs
650 OopMapSet* oop_maps = NULL;
651 OopMap* oop_map = NULL;
652 switch (id) {
653 {
654 case forward_exception_id:
655 {
656 oop_maps = generate_handle_exception(id, sasm);
657 __ leave();
658 __ ret(lr);
659 }
660 break;
661
662 case throw_div0_exception_id:
663 { StubFrame f(sasm, "throw_div0_exception", dont_gc_arguments);
664 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false);
665 }
666 break;
667
668 case throw_null_pointer_exception_id:
669 { StubFrame f(sasm, "throw_null_pointer_exception", dont_gc_arguments);
670 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false);
671 }
672 break;
673
674 case new_instance_id:
675 case fast_new_instance_id:
676 case fast_new_instance_init_check_id:
677 {
678 Register klass = r3; // Incoming
679 Register obj = r0; // Result
680
681 if (id == new_instance_id) {
682 __ set_info("new_instance", dont_gc_arguments);
683 } else if (id == fast_new_instance_id) {
684 __ set_info("fast new_instance", dont_gc_arguments);
685 } else {
686 assert(id == fast_new_instance_init_check_id, "bad StubID");
687 __ set_info("fast new_instance init check", dont_gc_arguments);
688 }
689
690 if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) &&
691 UseTLAB && Universe::heap()->supports_inline_contig_alloc()) {
692 Label slow_path;
693 Register obj_size = r2;
694 Register t1 = r19;
695 Register t2 = r4;
696 assert_different_registers(klass, obj, obj_size, t1, t2);
697
698 __ stp(r19, zr, Address(__ pre(sp, -2 * wordSize)));
699
700 if (id == fast_new_instance_init_check_id) {
701 // make sure the klass is initialized
702 __ ldrb(rscratch1, Address(klass, InstanceKlass::init_state_offset()));
703 __ cmpw(rscratch1, InstanceKlass::fully_initialized);
704 __ br(Assembler::NE, slow_path);
705 }
706
707 #ifdef ASSERT
708 // assert object can be fast path allocated
709 {
710 Label ok, not_ok;
711 __ ldrw(obj_size, Address(klass, Klass::layout_helper_offset()));
712 __ cmp(obj_size, 0u);
713 __ br(Assembler::LE, not_ok); // make sure it's an instance (LH > 0)
714 __ tstw(obj_size, Klass::_lh_instance_slow_path_bit);
715 __ br(Assembler::EQ, ok);
716 __ bind(not_ok);
717 __ stop("assert(can be fast path allocated)");
718 __ should_not_reach_here();
719 __ bind(ok);
720 }
721 #endif // ASSERT
722
723 // get the instance size (size is postive so movl is fine for 64bit)
724 __ ldrw(obj_size, Address(klass, Klass::layout_helper_offset()));
725
726 __ eden_allocate(obj, obj_size, 0, t1, slow_path);
727 __ incr_allocated_bytes(rthread, obj_size, 0, rscratch1);
728
729 __ initialize_object(obj, klass, obj_size, 0, t1, t2, /* is_tlab_allocated */ false);
730 __ verify_oop(obj);
731 __ ldp(r19, zr, Address(__ post(sp, 2 * wordSize)));
732 __ ret(lr);
733
734 __ bind(slow_path);
735 __ ldp(r19, zr, Address(__ post(sp, 2 * wordSize)));
736 }
737
738 __ enter();
739 OopMap* map = save_live_registers(sasm);
740 int call_offset = __ call_RT(obj, noreg, CAST_FROM_FN_PTR(address, new_instance), klass);
741 oop_maps = new OopMapSet();
742 oop_maps->add_gc_map(call_offset, map);
743 restore_live_registers_except_r0(sasm);
744 __ verify_oop(obj);
745 __ leave();
746 __ ret(lr);
747
748 // r0,: new instance
749 }
750
751 break;
752
753 case counter_overflow_id:
754 {
755 Register bci = r0, method = r1;
756 __ enter();
757 OopMap* map = save_live_registers(sasm);
758 // Retrieve bci
759 __ ldrw(bci, Address(rfp, 2*BytesPerWord));
760 // And a pointer to the Method*
761 __ ldr(method, Address(rfp, 3*BytesPerWord));
762 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, counter_overflow), bci, method);
763 oop_maps = new OopMapSet();
764 oop_maps->add_gc_map(call_offset, map);
765 restore_live_registers(sasm);
766 __ leave();
767 __ ret(lr);
768 }
769 break;
770
771 case new_type_array_id:
772 case new_object_array_id:
773 {
774 Register length = r19; // Incoming
775 Register klass = r3; // Incoming
776 Register obj = r0; // Result
777
778 if (id == new_type_array_id) {
779 __ set_info("new_type_array", dont_gc_arguments);
780 } else {
781 __ set_info("new_object_array", dont_gc_arguments);
782 }
783
784 #ifdef ASSERT
785 // assert object type is really an array of the proper kind
786 {
787 Label ok;
788 Register t0 = obj;
789 __ ldrw(t0, Address(klass, Klass::layout_helper_offset()));
790 __ asrw(t0, t0, Klass::_lh_array_tag_shift);
791 int tag = ((id == new_type_array_id)
792 ? Klass::_lh_array_tag_type_value
793 : Klass::_lh_array_tag_obj_value);
794 __ mov(rscratch1, tag);
795 __ cmpw(t0, rscratch1);
796 __ br(Assembler::EQ, ok);
797 __ stop("assert(is an array klass)");
798 __ should_not_reach_here();
799 __ bind(ok);
800 }
801 #endif // ASSERT
802
803 if (UseTLAB && Universe::heap()->supports_inline_contig_alloc()) {
804 Register arr_size = r4;
805 Register t1 = r2;
806 Register t2 = r5;
807 Label slow_path;
808 assert_different_registers(length, klass, obj, arr_size, t1, t2);
809
810 // check that array length is small enough for fast path.
811 __ mov(rscratch1, C1_MacroAssembler::max_array_allocation_length);
812 __ cmpw(length, rscratch1);
813 __ br(Assembler::HI, slow_path);
814
815 // get the allocation size: round_up(hdr + length << (layout_helper & 0x1F))
816 // since size is positive ldrw does right thing on 64bit
817 __ ldrw(t1, Address(klass, Klass::layout_helper_offset()));
818 // since size is positive movw does right thing on 64bit
819 __ movw(arr_size, length);
820 __ lslvw(arr_size, length, t1);
821 __ ubfx(t1, t1, Klass::_lh_header_size_shift,
822 exact_log2(Klass::_lh_header_size_mask + 1));
823 __ add(arr_size, arr_size, t1);
824 __ add(arr_size, arr_size, MinObjAlignmentInBytesMask); // align up
825 __ andr(arr_size, arr_size, ~MinObjAlignmentInBytesMask);
826
827 __ eden_allocate(obj, arr_size, 0, t1, slow_path); // preserves arr_size
828 __ incr_allocated_bytes(rthread, arr_size, 0, rscratch1);
829
830 __ initialize_header(obj, klass, length, t1, t2);
831 __ ldrb(t1, Address(klass, in_bytes(Klass::layout_helper_offset()) + (Klass::_lh_header_size_shift / BitsPerByte)));
832 assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise");
833 assert(Klass::_lh_header_size_mask <= 0xFF, "bytewise");
834 __ andr(t1, t1, Klass::_lh_header_size_mask);
835 __ sub(arr_size, arr_size, t1); // body length
836 __ add(t1, t1, obj); // body start
837 __ initialize_body(t1, arr_size, 0, t2);
838 __ verify_oop(obj);
839
840 __ ret(lr);
841
842 __ bind(slow_path);
843 }
844
845 __ enter();
846 OopMap* map = save_live_registers(sasm);
847 int call_offset;
848 if (id == new_type_array_id) {
849 call_offset = __ call_RT(obj, noreg, CAST_FROM_FN_PTR(address, new_type_array), klass, length);
850 } else {
851 call_offset = __ call_RT(obj, noreg, CAST_FROM_FN_PTR(address, new_object_array), klass, length);
852 }
853
854 oop_maps = new OopMapSet();
855 oop_maps->add_gc_map(call_offset, map);
856 restore_live_registers_except_r0(sasm);
857
858 __ verify_oop(obj);
859 __ leave();
860 __ ret(lr);
861
862 // r0: new array
863 }
864 break;
865
866 case new_multi_array_id:
867 { StubFrame f(sasm, "new_multi_array", dont_gc_arguments);
868 // r0,: klass
869 // r19,: rank
870 // r2: address of 1st dimension
871 OopMap* map = save_live_registers(sasm);
872 __ mov(c_rarg1, r0);
873 __ mov(c_rarg3, r2);
874 __ mov(c_rarg2, r19);
875 int call_offset = __ call_RT(r0, noreg, CAST_FROM_FN_PTR(address, new_multi_array), r1, r2, r3);
876
877 oop_maps = new OopMapSet();
878 oop_maps->add_gc_map(call_offset, map);
879 restore_live_registers_except_r0(sasm);
880
881 // r0,: new multi array
882 __ verify_oop(r0);
883 }
884 break;
885
886 case register_finalizer_id:
887 {
888 __ set_info("register_finalizer", dont_gc_arguments);
889
890 // This is called via call_runtime so the arguments
891 // will be place in C abi locations
892
893 __ verify_oop(c_rarg0);
894
895 // load the klass and check the has finalizer flag
896 Label register_finalizer;
897 Register t = r5;
898 __ load_klass(t, r0);
899 __ ldrw(t, Address(t, Klass::access_flags_offset()));
900 __ tbnz(t, exact_log2(JVM_ACC_HAS_FINALIZER), register_finalizer);
901 __ ret(lr);
902
903 __ bind(register_finalizer);
904 __ enter();
905 OopMap* oop_map = save_live_registers(sasm);
906 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), r0);
907 oop_maps = new OopMapSet();
908 oop_maps->add_gc_map(call_offset, oop_map);
909
910 // Now restore all the live registers
911 restore_live_registers(sasm);
912
913 __ leave();
914 __ ret(lr);
915 }
916 break;
917
918 case throw_class_cast_exception_id:
919 { StubFrame f(sasm, "throw_class_cast_exception", dont_gc_arguments);
920 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true);
921 }
922 break;
923
924 case throw_incompatible_class_change_error_id:
925 { StubFrame f(sasm, "throw_incompatible_class_cast_exception", dont_gc_arguments);
926 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false);
927 }
928 break;
929
930 case slow_subtype_check_id:
931 {
932 // Typical calling sequence:
933 // __ push(klass_RInfo); // object klass or other subclass
934 // __ push(sup_k_RInfo); // array element klass or other superclass
935 // __ bl(slow_subtype_check);
936 // Note that the subclass is pushed first, and is therefore deepest.
937 enum layout {
938 r0_off, r0_off_hi,
939 r2_off, r2_off_hi,
940 r4_off, r4_off_hi,
941 r5_off, r5_off_hi,
942 sup_k_off, sup_k_off_hi,
943 klass_off, klass_off_hi,
944 framesize,
945 result_off = sup_k_off
946 };
947
948 __ set_info("slow_subtype_check", dont_gc_arguments);
949 __ push(RegSet::of(r0, r2, r4, r5), sp);
950
951 // This is called by pushing args and not with C abi
952 // __ ldr(r4, Address(sp, (klass_off) * VMRegImpl::stack_slot_size)); // subclass
953 // __ ldr(r0, Address(sp, (sup_k_off) * VMRegImpl::stack_slot_size)); // superclass
954
955 __ ldp(r4, r0, Address(sp, (sup_k_off) * VMRegImpl::stack_slot_size));
956
957 Label miss;
958 __ check_klass_subtype_slow_path(r4, r0, r2, r5, NULL, &miss);
959
960 // fallthrough on success:
961 __ mov(rscratch1, 1);
962 __ str(rscratch1, Address(sp, (result_off) * VMRegImpl::stack_slot_size)); // result
963 __ pop(RegSet::of(r0, r2, r4, r5), sp);
964 __ ret(lr);
965
966 __ bind(miss);
967 __ str(zr, Address(sp, (result_off) * VMRegImpl::stack_slot_size)); // result
968 __ pop(RegSet::of(r0, r2, r4, r5), sp);
969 __ ret(lr);
970 }
971 break;
972
973 case monitorenter_nofpu_id:
974 save_fpu_registers = false;
975 // fall through
976 case monitorenter_id:
977 {
978 StubFrame f(sasm, "monitorenter", dont_gc_arguments);
979 OopMap* map = save_live_registers(sasm, save_fpu_registers);
980
981 // Called with store_parameter and not C abi
982
983 f.load_argument(1, r0); // r0,: object
984 f.load_argument(0, r1); // r1,: lock address
985
986 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), r0, r1);
987
988 oop_maps = new OopMapSet();
989 oop_maps->add_gc_map(call_offset, map);
990 restore_live_registers(sasm, save_fpu_registers);
991 }
992 break;
993
994 case monitorexit_nofpu_id:
995 save_fpu_registers = false;
996 // fall through
997 case monitorexit_id:
998 {
999 StubFrame f(sasm, "monitorexit", dont_gc_arguments);
1000 OopMap* map = save_live_registers(sasm, save_fpu_registers);
1001
1002 // Called with store_parameter and not C abi
1003
1004 f.load_argument(0, r0); // r0,: lock address
1005
1006 // note: really a leaf routine but must setup last java sp
1007 // => use call_RT for now (speed can be improved by
1008 // doing last java sp setup manually)
1009 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), r0);
1010
1011 oop_maps = new OopMapSet();
1012 oop_maps->add_gc_map(call_offset, map);
1013 restore_live_registers(sasm, save_fpu_registers);
1014 }
1015 break;
1016
1017 case deoptimize_id:
1018 {
1019 StubFrame f(sasm, "deoptimize", dont_gc_arguments);
1020 OopMap* oop_map = save_live_registers(sasm);
1021 f.load_argument(0, c_rarg1);
1022 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, deoptimize), c_rarg1);
1023
1024 oop_maps = new OopMapSet();
1025 oop_maps->add_gc_map(call_offset, oop_map);
1026 restore_live_registers(sasm);
1027 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
1028 assert(deopt_blob != NULL, "deoptimization blob must have been created");
1029 __ leave();
1030 __ far_jump(RuntimeAddress(deopt_blob->unpack_with_reexecution()));
1031 }
1032 break;
1033
1034 case throw_range_check_failed_id:
1035 { StubFrame f(sasm, "range_check_failed", dont_gc_arguments);
1036 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true);
1037 }
1038 break;
1039
1040 case unwind_exception_id:
1041 { __ set_info("unwind_exception", dont_gc_arguments);
1042 // note: no stubframe since we are about to leave the current
1043 // activation and we are calling a leaf VM function only.
1044 generate_unwind_exception(sasm);
1045 }
1046 break;
1047
1048 case access_field_patching_id:
1049 { StubFrame f(sasm, "access_field_patching", dont_gc_arguments);
1050 // we should set up register map
1051 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching));
1052 }
1053 break;
1054
1055 case load_klass_patching_id:
1056 { StubFrame f(sasm, "load_klass_patching", dont_gc_arguments);
1057 // we should set up register map
1058 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching));
1059 }
1060 break;
1061
1062 case load_mirror_patching_id:
1063 { StubFrame f(sasm, "load_mirror_patching", dont_gc_arguments);
1064 // we should set up register map
1065 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_mirror_patching));
1066 }
1067 break;
1068
1069 case load_appendix_patching_id:
1070 { StubFrame f(sasm, "load_appendix_patching", dont_gc_arguments);
1071 // we should set up register map
1072 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_appendix_patching));
1073 }
1074 break;
1075
1076 case handle_exception_nofpu_id:
1077 case handle_exception_id:
1078 { StubFrame f(sasm, "handle_exception", dont_gc_arguments);
1079 oop_maps = generate_handle_exception(id, sasm);
1080 }
1081 break;
1082
1083 case handle_exception_from_callee_id:
1084 { StubFrame f(sasm, "handle_exception_from_callee", dont_gc_arguments);
1085 oop_maps = generate_handle_exception(id, sasm);
1086 }
1087 break;
1088
1089 case throw_index_exception_id:
1090 { StubFrame f(sasm, "index_range_check_failed", dont_gc_arguments);
1091 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true);
1092 }
1093 break;
1094
1095 case throw_array_store_exception_id:
1096 { StubFrame f(sasm, "throw_array_store_exception", dont_gc_arguments);
1097 // tos + 0: link
1098 // + 1: return address
1099 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true);
1100 }
1101 break;
1102
1103 #if INCLUDE_ALL_GCS
1104
1105 case g1_pre_barrier_slow_id:
1106 {
1107 StubFrame f(sasm, "g1_pre_barrier", dont_gc_arguments);
1108 // arg0 : previous value of memory
1109
1110 BarrierSet* bs = BarrierSet::barrier_set();
1111 if (bs->kind() != BarrierSet::G1BarrierSet) {
1112 __ mov(r0, (int)id);
1113 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), r0);
1114 __ should_not_reach_here();
1115 break;
1116 }
1117
1118 const Register pre_val = r0;
1119 const Register thread = rthread;
1120 const Register tmp = rscratch1;
1121
1122 Address in_progress(thread, in_bytes(G1ThreadLocalData::satb_mark_queue_active_offset()));
1123 Address queue_index(thread, in_bytes(G1ThreadLocalData::satb_mark_queue_index_offset()));
1124 Address buffer(thread, in_bytes(G1ThreadLocalData::satb_mark_queue_buffer_offset()));
1125
1126 Label done;
1127 Label runtime;
1128
1129 // Is marking still active?
1130 if (in_bytes(SATBMarkQueue::byte_width_of_active()) == 4) {
1131 __ ldrw(tmp, in_progress);
1132 } else {
1133 assert(in_bytes(SATBMarkQueue::byte_width_of_active()) == 1, "Assumption");
1134 __ ldrb(tmp, in_progress);
1135 }
1136 __ cbzw(tmp, done);
1137
1138 // Can we store original value in the thread's buffer?
1139 __ ldr(tmp, queue_index);
1140 __ cbz(tmp, runtime);
1141
1142 __ sub(tmp, tmp, wordSize);
1143 __ str(tmp, queue_index);
1144 __ ldr(rscratch2, buffer);
1145 __ add(tmp, tmp, rscratch2);
1146 f.load_argument(0, rscratch2);
1147 __ str(rscratch2, Address(tmp, 0));
1148 __ b(done);
1149
1150 __ bind(runtime);
1151 __ push_call_clobbered_registers();
1152 f.load_argument(0, pre_val);
1153 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_pre), pre_val, thread);
1154 __ pop_call_clobbered_registers();
1155 __ bind(done);
1156 }
1157 break;
1158 case g1_post_barrier_slow_id:
1159 {
1160 StubFrame f(sasm, "g1_post_barrier", dont_gc_arguments);
1161
1162 BarrierSet* bs = BarrierSet::barrier_set();
1163 if (bs->kind() != BarrierSet::G1BarrierSet) {
1164 __ mov(r0, (int)id);
1165 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), r0);
1166 __ should_not_reach_here();
1167 break;
1168 }
1169
1170 // arg0: store_address
1171 Address store_addr(rfp, 2*BytesPerWord);
1172
1173 Label done;
1174 Label runtime;
1175
1176 // At this point we know new_value is non-NULL and the new_value crosses regions.
1177 // Must check to see if card is already dirty
1178
1179 const Register thread = rthread;
1180
1181 Address queue_index(thread, in_bytes(G1ThreadLocalData::dirty_card_queue_index_offset()));
1182 Address buffer(thread, in_bytes(G1ThreadLocalData::dirty_card_queue_buffer_offset()));
1183
1184 const Register card_offset = rscratch2;
1185 // LR is free here, so we can use it to hold the byte_map_base.
1186 const Register byte_map_base = lr;
1187
1188 assert_different_registers(card_offset, byte_map_base, rscratch1);
1189
1190 f.load_argument(0, card_offset);
1191 __ lsr(card_offset, card_offset, CardTable::card_shift);
1192 __ load_byte_map_base(byte_map_base);
1193 __ ldrb(rscratch1, Address(byte_map_base, card_offset));
1194 __ cmpw(rscratch1, (int)G1CardTable::g1_young_card_val());
1195 __ br(Assembler::EQ, done);
1196
1197 assert((int)CardTable::dirty_card_val() == 0, "must be 0");
1198
1199 __ membar(Assembler::StoreLoad);
1200 __ ldrb(rscratch1, Address(byte_map_base, card_offset));
1201 __ cbzw(rscratch1, done);
1202
1203 // storing region crossing non-NULL, card is clean.
1204 // dirty card and log.
1205 __ strb(zr, Address(byte_map_base, card_offset));
1206
1207 // Convert card offset into an address in card_addr
1208 Register card_addr = card_offset;
1209 __ add(card_addr, byte_map_base, card_addr);
1210
1211 __ ldr(rscratch1, queue_index);
1212 __ cbz(rscratch1, runtime);
1213 __ sub(rscratch1, rscratch1, wordSize);
1214 __ str(rscratch1, queue_index);
1215
1216 // Reuse LR to hold buffer_addr
1217 const Register buffer_addr = lr;
1218
1219 __ ldr(buffer_addr, buffer);
1220 __ str(card_addr, Address(buffer_addr, rscratch1));
1221 __ b(done);
1222
1223 __ bind(runtime);
1224 __ push_call_clobbered_registers();
1225 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::g1_wb_post), card_addr, thread);
1226 __ pop_call_clobbered_registers();
1227 __ bind(done);
1228
1229 }
1230 break;
1231 #endif
1232
1233 case predicate_failed_trap_id:
1234 {
1235 StubFrame f(sasm, "predicate_failed_trap", dont_gc_arguments);
1236
1237 OopMap* map = save_live_registers(sasm);
1238
1239 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, predicate_failed_trap));
1240 oop_maps = new OopMapSet();
1241 oop_maps->add_gc_map(call_offset, map);
1242 restore_live_registers(sasm);
1243 __ leave();
1244 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
1245 assert(deopt_blob != NULL, "deoptimization blob must have been created");
1246
1247 __ far_jump(RuntimeAddress(deopt_blob->unpack_with_reexecution()));
1248 }
1249 break;
1250
1251
1252 default:
1253 { StubFrame f(sasm, "unimplemented entry", dont_gc_arguments);
1254 __ mov(r0, (int)id);
1255 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), r0);
1256 __ should_not_reach_here();
1257 }
1258 break;
1259 }
1260 }
1261 return oop_maps;
1262 }
1263
1264 #undef __
1265
1266 const char *Runtime1::pd_name_for_address(address entry) { Unimplemented(); return 0; }