1 /*
2 * Copyright (c) 2008, 2023, 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 "asm/macroAssembler.inline.hpp"
27 #include "c1/c1_Defs.hpp"
28 #include "c1/c1_LIRAssembler.hpp"
29 #include "c1/c1_MacroAssembler.hpp"
30 #include "c1/c1_Runtime1.hpp"
31 #include "ci/ciUtilities.hpp"
32 #include "compiler/oopMap.hpp"
33 #include "gc/shared/cardTable.hpp"
34 #include "gc/shared/cardTableBarrierSet.hpp"
35 #include "gc/shared/collectedHeap.hpp"
36 #include "gc/shared/tlab_globals.hpp"
37 #include "interpreter/interpreter.hpp"
38 #include "memory/universe.hpp"
39 #include "nativeInst_arm.hpp"
40 #include "oops/oop.inline.hpp"
41 #include "prims/jvmtiExport.hpp"
42 #include "register_arm.hpp"
43 #include "runtime/sharedRuntime.hpp"
44 #include "runtime/signature.hpp"
45 #include "runtime/vframeArray.hpp"
46 #include "utilities/align.hpp"
47 #include "vmreg_arm.inline.hpp"
48
49 // Note: Rtemp usage is this file should not impact C2 and should be
50 // correct as long as it is not implicitly used in lower layers (the
51 // arm [macro]assembler) and used with care in the other C1 specific
52 // files.
53
54 // Implementation of StubAssembler
55
56 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, int args_size) {
57 mov(R0, Rthread);
58
59 int call_offset = set_last_Java_frame(SP, FP, false, Rtemp);
60
61 call(entry);
62 if (call_offset == -1) { // PC not saved
63 call_offset = offset();
64 }
65 reset_last_Java_frame(Rtemp);
66
67 assert(frame_size() != no_frame_size, "frame must be fixed");
68 if (_stub_id != Runtime1::forward_exception_id) {
69 ldr(R3, Address(Rthread, Thread::pending_exception_offset()));
70 }
71
72 if (oop_result1->is_valid()) {
73 assert_different_registers(oop_result1, R3, Rtemp);
74 get_vm_result(oop_result1, Rtemp);
75 }
76 if (metadata_result->is_valid()) {
77 assert_different_registers(metadata_result, R3, Rtemp);
78 get_vm_result_2(metadata_result, Rtemp);
79 }
80
81 // Check for pending exception
82 // unpack_with_exception_in_tls path is taken through
83 // Runtime1::exception_handler_for_pc
84 if (_stub_id != Runtime1::forward_exception_id) {
85 assert(frame_size() != no_frame_size, "cannot directly call forward_exception_id");
86 cmp(R3, 0);
87 jump(Runtime1::entry_for(Runtime1::forward_exception_id), relocInfo::runtime_call_type, Rtemp, ne);
88 } else {
89 #ifdef ASSERT
90 // Should not have pending exception in forward_exception stub
91 ldr(R3, Address(Rthread, Thread::pending_exception_offset()));
92 cmp(R3, 0);
93 breakpoint(ne);
94 #endif // ASSERT
95 }
96 return call_offset;
97 }
98
99
100 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1) {
101 if (arg1 != R1) {
102 mov(R1, arg1);
103 }
104 return call_RT(oop_result1, metadata_result, entry, 1);
105 }
106
107
108 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2) {
109 assert(arg1 == R1 && arg2 == R2, "cannot handle otherwise");
110 return call_RT(oop_result1, metadata_result, entry, 2);
111 }
112
113
114 int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3) {
115 assert(arg1 == R1 && arg2 == R2 && arg3 == R3, "cannot handle otherwise");
116 return call_RT(oop_result1, metadata_result, entry, 3);
117 }
118
119
120 #define __ sasm->
121
122 // TODO: ARM - does this duplicate RegisterSaver in SharedRuntime?
123
124 enum RegisterLayout {
125 fpu_save_size = pd_nof_fpu_regs_reg_alloc,
126 #ifndef __SOFTFP__
127 D0_offset = 0,
128 #endif
129 R0_offset = fpu_save_size,
130 R1_offset,
131 R2_offset,
132 R3_offset,
133 R4_offset,
134 R5_offset,
135 R6_offset,
136 #if (FP_REG_NUM != 7)
137 R7_offset,
138 #endif
139 R8_offset,
140 R9_offset,
141 R10_offset,
142 #if (FP_REG_NUM != 11)
143 R11_offset,
144 #endif
145 R12_offset,
146 FP_offset,
147 LR_offset,
148 reg_save_size,
149 arg1_offset = reg_save_size * wordSize,
150 arg2_offset = (reg_save_size + 1) * wordSize
151 };
152
153
154 static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers = HaveVFP) {
155 sasm->set_frame_size(reg_save_size /* in words */);
156
157 // Record saved value locations in an OopMap.
158 // Locations are offsets from sp after runtime call.
159 OopMap* map = new OopMap(VMRegImpl::slots_per_word * reg_save_size, 0);
160
161 int j=0;
162 for (int i = R0_offset; i < R10_offset; i++) {
163 if (j == FP_REG_NUM) {
164 // skip the FP register, saved below
165 j++;
166 }
167 map->set_callee_saved(VMRegImpl::stack2reg(i), as_Register(j)->as_VMReg());
168 j++;
169 }
170 assert(j == R10->encoding(), "must be");
171 #if (FP_REG_NUM != 11)
172 // add R11, if not saved as FP
173 map->set_callee_saved(VMRegImpl::stack2reg(R11_offset), R11->as_VMReg());
174 #endif
175 map->set_callee_saved(VMRegImpl::stack2reg(FP_offset), FP->as_VMReg());
176 map->set_callee_saved(VMRegImpl::stack2reg(LR_offset), LR->as_VMReg());
177
178 if (save_fpu_registers) {
179 for (int i = 0; i < fpu_save_size; i++) {
180 map->set_callee_saved(VMRegImpl::stack2reg(i), as_FloatRegister(i)->as_VMReg());
181 }
182 }
183
184 return map;
185 }
186
187 static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = HaveVFP) {
188 __ block_comment("save_live_registers");
189 sasm->set_frame_size(reg_save_size /* in words */);
190
191 __ push(RegisterSet(FP) | RegisterSet(LR));
192 __ push(RegisterSet(R0, R6) | RegisterSet(R8, R10) | R12 | altFP_7_11);
193 if (save_fpu_registers) {
194 __ fpush(FloatRegisterSet(D0, fpu_save_size / 2));
195 } else {
196 __ sub(SP, SP, fpu_save_size * wordSize);
197 }
198
199 return generate_oop_map(sasm, save_fpu_registers);
200 }
201
202
203 static void restore_live_registers(StubAssembler* sasm,
204 bool restore_R0,
205 bool restore_FP_LR,
206 bool do_return,
207 bool restore_fpu_registers = HaveVFP) {
208 __ block_comment("restore_live_registers");
209
210 if (restore_fpu_registers) {
211 __ fpop(FloatRegisterSet(D0, fpu_save_size / 2));
212 if (!restore_R0) {
213 __ add(SP, SP, (R1_offset - fpu_save_size) * wordSize);
214 }
215 } else {
216 __ add(SP, SP, (restore_R0 ? fpu_save_size : R1_offset) * wordSize);
217 }
218 __ pop(RegisterSet((restore_R0 ? R0 : R1), R6) | RegisterSet(R8, R10) | R12 | altFP_7_11);
219 if (restore_FP_LR) {
220 __ pop(RegisterSet(FP) | RegisterSet(do_return ? PC : LR));
221 } else {
222 assert (!do_return, "return without restoring FP/LR");
223 }
224 }
225
226
227 static void restore_live_registers_except_R0(StubAssembler* sasm, bool restore_fpu_registers = HaveVFP) {
228 restore_live_registers(sasm, false, true, true, restore_fpu_registers);
229 }
230
231 static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = HaveVFP) {
232 restore_live_registers(sasm, true, true, true, restore_fpu_registers);
233 }
234
235 static void restore_live_registers_except_FP_LR(StubAssembler* sasm, bool restore_fpu_registers = HaveVFP) {
236 restore_live_registers(sasm, true, false, false, restore_fpu_registers);
237 }
238
239 static void restore_live_registers_without_return(StubAssembler* sasm, bool restore_fpu_registers = HaveVFP) {
240 restore_live_registers(sasm, true, true, false, restore_fpu_registers);
241 }
242
243 void StubAssembler::save_live_registers() {
244 ::save_live_registers(this);
245 }
246
247 void StubAssembler::restore_live_registers_without_return() {
248 ::restore_live_registers_without_return(this);
249 }
250
251 void Runtime1::initialize_pd() {
252 }
253
254 uint Runtime1::runtime_blob_current_thread_offset(frame f) {
255 unimplemented();
256 return 0;
257 }
258
259 OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) {
260 OopMap* oop_map = save_live_registers(sasm);
261
262 int call_offset;
263 if (has_argument) {
264 __ ldr(R1, Address(SP, arg1_offset));
265 __ ldr(R2, Address(SP, arg2_offset));
266 call_offset = __ call_RT(noreg, noreg, target, R1, R2);
267 } else {
268 call_offset = __ call_RT(noreg, noreg, target);
269 }
270
271 OopMapSet* oop_maps = new OopMapSet();
272 oop_maps->add_gc_map(call_offset, oop_map);
273
274 DEBUG_ONLY(STOP("generate_exception_throw");) // Should not reach here
275 return oop_maps;
276 }
277
278
279 static void restore_sp_for_method_handle(StubAssembler* sasm) {
280 // Restore SP from its saved reg (FP) if the exception PC is a MethodHandle call site.
281 __ ldr_s32(Rtemp, Address(Rthread, JavaThread::is_method_handle_return_offset()));
282 __ cmp(Rtemp, 0);
283 __ mov(SP, Rmh_SP_save, ne);
284 }
285
286
287 OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler* sasm) {
288 __ block_comment("generate_handle_exception");
289
290 bool save_fpu_registers = false;
291
292 // Save registers, if required.
293 OopMapSet* oop_maps = new OopMapSet();
294 OopMap* oop_map = nullptr;
295
296 switch (id) {
297 case forward_exception_id: {
298 save_fpu_registers = HaveVFP;
299 oop_map = generate_oop_map(sasm);
300 __ ldr(Rexception_obj, Address(Rthread, Thread::pending_exception_offset()));
301 __ ldr(Rexception_pc, Address(SP, LR_offset * wordSize));
302 Register zero = __ zero_register(Rtemp);
303 __ str(zero, Address(Rthread, Thread::pending_exception_offset()));
304 break;
305 }
306 case handle_exception_id:
307 save_fpu_registers = HaveVFP;
308 // fall-through
309 case handle_exception_nofpu_id:
310 // At this point all registers MAY be live.
311 oop_map = save_live_registers(sasm, save_fpu_registers);
312 break;
313 case handle_exception_from_callee_id:
314 // At this point all registers except exception oop (R4/R19) and
315 // exception pc (R5/R20) are dead.
316 oop_map = save_live_registers(sasm); // TODO it's not required to save all registers
317 break;
318 default: ShouldNotReachHere();
319 }
320
321 __ str(Rexception_obj, Address(Rthread, JavaThread::exception_oop_offset()));
322 __ str(Rexception_pc, Address(Rthread, JavaThread::exception_pc_offset()));
323
324 __ str(Rexception_pc, Address(SP, LR_offset * wordSize)); // patch throwing pc into return address
325
326 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc));
327 oop_maps->add_gc_map(call_offset, oop_map);
328
329 // Exception handler found
330 __ str(R0, Address(SP, LR_offset * wordSize)); // patch the return address
331
332 // Restore the registers that were saved at the beginning, remove
333 // frame and jump to the exception handler.
334 switch (id) {
335 case forward_exception_id:
336 case handle_exception_nofpu_id:
337 case handle_exception_id:
338 restore_live_registers(sasm, save_fpu_registers);
339 // Note: the restore live registers includes the jump to LR (patched to R0)
340 break;
341 case handle_exception_from_callee_id:
342 restore_live_registers_without_return(sasm); // must not jump immediately to handler
343 restore_sp_for_method_handle(sasm);
344 __ ret();
345 break;
346 default: ShouldNotReachHere();
347 }
348
349 DEBUG_ONLY(STOP("generate_handle_exception");) // Should not reach here
350
351 return oop_maps;
352 }
353
354
355 void Runtime1::generate_unwind_exception(StubAssembler* sasm) {
356
357 if (AbortVMOnException) {
358 save_live_registers(sasm);
359 __ call_VM_leaf(CAST_FROM_FN_PTR(address, check_abort_on_vm_exception), Rexception_obj);
360 restore_live_registers(sasm);
361 }
362
363 // FP no longer used to find the frame start
364 // on entry, remove_frame() has already been called (restoring FP and LR)
365
366 // search the exception handler address of the caller (using the return address)
367 __ mov(c_rarg0, Rthread);
368 __ mov(Rexception_pc, LR);
369 __ mov(c_rarg1, LR);
370 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), c_rarg0, c_rarg1);
371
372 // Exception oop should be still in Rexception_obj and pc in Rexception_pc
373 // Jump to handler
374 __ verify_not_null_oop(Rexception_obj);
375
376 // JSR292 extension
377 restore_sp_for_method_handle(sasm);
378
379 __ jump(R0);
380 }
381
382
383 OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) {
384 OopMap* oop_map = save_live_registers(sasm);
385
386 // call the runtime patching routine, returns non-zero if nmethod got deopted.
387 int call_offset = __ call_RT(noreg, noreg, target);
388 OopMapSet* oop_maps = new OopMapSet();
389 oop_maps->add_gc_map(call_offset, oop_map);
390
391 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
392 assert(deopt_blob != nullptr, "deoptimization blob must have been created");
393
394 __ cmp_32(R0, 0);
395
396 restore_live_registers_except_FP_LR(sasm);
397 __ pop(RegisterSet(FP) | RegisterSet(PC), eq);
398
399 // Deoptimization needed
400 // TODO: ARM - no need to restore FP & LR because unpack_with_reexecution() stores them back
401 __ pop(RegisterSet(FP) | RegisterSet(LR));
402
403 __ jump(deopt_blob->unpack_with_reexecution(), relocInfo::runtime_call_type, Rtemp);
404
405 DEBUG_ONLY(STOP("generate_patching");) // Should not reach here
406 return oop_maps;
407 }
408
409
410 OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
411 const bool must_gc_arguments = true;
412 const bool dont_gc_arguments = false;
413
414 OopMapSet* oop_maps = nullptr;
415 bool save_fpu_registers = HaveVFP;
416
417 switch (id) {
418 case forward_exception_id:
419 {
420 oop_maps = generate_handle_exception(id, sasm);
421 // does not return on ARM
422 }
423 break;
424
425 case new_instance_id:
426 case fast_new_instance_id:
427 case fast_new_instance_init_check_id:
428 {
429 const Register result = R0;
430 const Register klass = R1;
431
432 OopMap* map = save_live_registers(sasm);
433 int call_offset = __ call_RT(result, noreg, CAST_FROM_FN_PTR(address, new_instance), klass);
434 oop_maps = new OopMapSet();
435 oop_maps->add_gc_map(call_offset, map);
436
437 // MacroAssembler::StoreStore useless (included in the runtime exit path)
438
439 restore_live_registers_except_R0(sasm);
440 }
441 break;
442
443 case counter_overflow_id:
444 {
445 OopMap* oop_map = save_live_registers(sasm);
446 __ ldr(R1, Address(SP, arg1_offset));
447 __ ldr(R2, Address(SP, arg2_offset));
448 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, counter_overflow), R1, R2);
449 oop_maps = new OopMapSet();
450 oop_maps->add_gc_map(call_offset, oop_map);
451 restore_live_registers(sasm);
452 }
453 break;
454
455 case new_type_array_id:
456 case new_object_array_id:
457 {
458 if (id == new_type_array_id) {
459 __ set_info("new_type_array", dont_gc_arguments);
460 } else {
461 __ set_info("new_object_array", dont_gc_arguments);
462 }
463
464 const Register result = R0;
465 const Register klass = R1;
466 const Register length = R2;
467
468 OopMap* map = save_live_registers(sasm);
469 int call_offset;
470 if (id == new_type_array_id) {
471 call_offset = __ call_RT(result, noreg, CAST_FROM_FN_PTR(address, new_type_array), klass, length);
472 } else {
473 call_offset = __ call_RT(result, noreg, CAST_FROM_FN_PTR(address, new_object_array), klass, length);
474 }
475 oop_maps = new OopMapSet();
476 oop_maps->add_gc_map(call_offset, map);
477
478 // MacroAssembler::StoreStore useless (included in the runtime exit path)
479
480 restore_live_registers_except_R0(sasm);
481 }
482 break;
483
484 case new_multi_array_id:
485 {
486 __ set_info("new_multi_array", dont_gc_arguments);
487
488 // R0: klass
489 // R2: rank
490 // SP: address of 1st dimension
491 const Register result = R0;
492 OopMap* map = save_live_registers(sasm);
493
494 __ mov(R1, R0);
495 __ add(R3, SP, arg1_offset);
496 int call_offset = __ call_RT(result, noreg, CAST_FROM_FN_PTR(address, new_multi_array), R1, R2, R3);
497
498 oop_maps = new OopMapSet();
499 oop_maps->add_gc_map(call_offset, map);
500
501 // MacroAssembler::StoreStore useless (included in the runtime exit path)
502
503 restore_live_registers_except_R0(sasm);
504 }
505 break;
506
507 case register_finalizer_id:
508 {
509 __ set_info("register_finalizer", dont_gc_arguments);
510
511 // Do not call runtime if JVM_ACC_HAS_FINALIZER flag is not set
512 __ load_klass(Rtemp, R0);
513 __ ldr_u32(Rtemp, Address(Rtemp, Klass::access_flags_offset()));
514
515 __ tst(Rtemp, JVM_ACC_HAS_FINALIZER);
516 __ bx(LR, eq);
517
518 // Call VM
519 OopMap* map = save_live_registers(sasm);
520 oop_maps = new OopMapSet();
521 int call_offset = __ call_RT(noreg, noreg,
522 CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), R0);
523 oop_maps->add_gc_map(call_offset, map);
524 restore_live_registers(sasm);
525 }
526 break;
527
528 case throw_range_check_failed_id:
529 {
530 __ set_info("range_check_failed", dont_gc_arguments);
531 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true);
532 }
533 break;
534
535 case throw_index_exception_id:
536 {
537 __ set_info("index_range_check_failed", dont_gc_arguments);
538 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true);
539 }
540 break;
541
542 case throw_div0_exception_id:
543 {
544 __ set_info("throw_div0_exception", dont_gc_arguments);
545 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false);
546 }
547 break;
548
549 case throw_null_pointer_exception_id:
550 {
551 __ set_info("throw_null_pointer_exception", dont_gc_arguments);
552 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false);
553 }
554 break;
555
556 case handle_exception_nofpu_id:
557 case handle_exception_id:
558 {
559 __ set_info("handle_exception", dont_gc_arguments);
560 oop_maps = generate_handle_exception(id, sasm);
561 }
562 break;
563
564 case handle_exception_from_callee_id:
565 {
566 __ set_info("handle_exception_from_callee", dont_gc_arguments);
567 oop_maps = generate_handle_exception(id, sasm);
568 }
569 break;
570
571 case unwind_exception_id:
572 {
573 __ set_info("unwind_exception", dont_gc_arguments);
574 generate_unwind_exception(sasm);
575 }
576 break;
577
578 case throw_array_store_exception_id:
579 {
580 __ set_info("throw_array_store_exception", dont_gc_arguments);
581 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true);
582 }
583 break;
584
585 case throw_class_cast_exception_id:
586 {
587 __ set_info("throw_class_cast_exception", dont_gc_arguments);
588 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true);
589 }
590 break;
591
592 case throw_incompatible_class_change_error_id:
593 {
594 __ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments);
595 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false);
596 }
597 break;
598
599 case slow_subtype_check_id:
600 {
601 // (in) R0 - sub, destroyed,
602 // (in) R1 - super, not changed
603 // (out) R0 - result: 1 if check passed, 0 otherwise
604 __ raw_push(R2, R3, LR);
605
606 // Load an array of secondary_supers
607 __ ldr(R2, Address(R0, Klass::secondary_supers_offset()));
608 // Length goes to R3
609 __ ldr_s32(R3, Address(R2, Array<Klass*>::length_offset_in_bytes()));
610 __ add(R2, R2, Array<Klass*>::base_offset_in_bytes());
611
612 Label loop, miss;
613 __ bind(loop);
614 __ cbz(R3, miss);
615 __ ldr(LR, Address(R2, wordSize, post_indexed));
616 __ sub(R3, R3, 1);
617 __ cmp(LR, R1);
618 __ b(loop, ne);
619
620 // We get here if an equal cache entry is found
621 __ str(R1, Address(R0, Klass::secondary_super_cache_offset()));
622 __ mov(R0, 1);
623 __ raw_pop_and_ret(R2, R3);
624
625 // A cache entry not found - return false
626 __ bind(miss);
627 __ mov(R0, 0);
628 __ raw_pop_and_ret(R2, R3);
629 }
630 break;
631
632 case monitorenter_nofpu_id:
633 save_fpu_registers = false;
634 // fall through
635 case monitorenter_id:
636 {
637 __ set_info("monitorenter", dont_gc_arguments);
638 const Register obj = R1;
639 const Register lock = R2;
640 OopMap* map = save_live_registers(sasm, save_fpu_registers);
641 __ ldr(obj, Address(SP, arg1_offset));
642 __ ldr(lock, Address(SP, arg2_offset));
643 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), obj, lock);
644 oop_maps = new OopMapSet();
645 oop_maps->add_gc_map(call_offset, map);
646 restore_live_registers(sasm, save_fpu_registers);
647 }
648 break;
649
650 case monitorexit_nofpu_id:
651 save_fpu_registers = false;
652 // fall through
653 case monitorexit_id:
654 {
655 __ set_info("monitorexit", dont_gc_arguments);
656 const Register lock = R1;
657 OopMap* map = save_live_registers(sasm, save_fpu_registers);
658 __ ldr(lock, Address(SP, arg1_offset));
659 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), lock);
660 oop_maps = new OopMapSet();
661 oop_maps->add_gc_map(call_offset, map);
662 restore_live_registers(sasm, save_fpu_registers);
663 }
664 break;
665
666 case deoptimize_id:
667 {
668 __ set_info("deoptimize", dont_gc_arguments);
669 OopMap* oop_map = save_live_registers(sasm);
670 const Register trap_request = R1;
671 __ ldr(trap_request, Address(SP, arg1_offset));
672 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, deoptimize), trap_request);
673 oop_maps = new OopMapSet();
674 oop_maps->add_gc_map(call_offset, oop_map);
675 restore_live_registers_without_return(sasm);
676 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
677 assert(deopt_blob != nullptr, "deoptimization blob must have been created");
678 __ jump(deopt_blob->unpack_with_reexecution(), relocInfo::runtime_call_type, noreg);
679 }
680 break;
681
682 case access_field_patching_id:
683 {
684 __ set_info("access_field_patching", dont_gc_arguments);
685 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching));
686 }
687 break;
688
689 case load_klass_patching_id:
690 {
691 __ set_info("load_klass_patching", dont_gc_arguments);
692 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching));
693 }
694 break;
695
696 case load_appendix_patching_id:
697 {
698 __ set_info("load_appendix_patching", dont_gc_arguments);
699 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_appendix_patching));
700 }
701 break;
702
703 case load_mirror_patching_id:
704 {
705 __ set_info("load_mirror_patching", dont_gc_arguments);
706 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_mirror_patching));
707 }
708 break;
709
710 case predicate_failed_trap_id:
711 {
712 __ set_info("predicate_failed_trap", dont_gc_arguments);
713
714 OopMap* oop_map = save_live_registers(sasm);
715 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, predicate_failed_trap));
716
717 oop_maps = new OopMapSet();
718 oop_maps->add_gc_map(call_offset, oop_map);
719
720 restore_live_registers_without_return(sasm);
721
722 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob();
723 assert(deopt_blob != nullptr, "deoptimization blob must have been created");
724 __ jump(deopt_blob->unpack_with_reexecution(), relocInfo::runtime_call_type, Rtemp);
725 }
726 break;
727
728 default:
729 {
730 __ set_info("unimplemented entry", dont_gc_arguments);
731 STOP("unimplemented entry");
732 }
733 break;
734 }
735 return oop_maps;
736 }
737
738 #undef __
739
740 #ifdef __SOFTFP__
741 const char *Runtime1::pd_name_for_address(address entry) {
742
743 #define FUNCTION_CASE(a, f) \
744 if ((intptr_t)a == CAST_FROM_FN_PTR(intptr_t, f)) return #f
745
746 FUNCTION_CASE(entry, __aeabi_fadd_glibc);
747 FUNCTION_CASE(entry, __aeabi_fmul);
748 FUNCTION_CASE(entry, __aeabi_fsub_glibc);
749 FUNCTION_CASE(entry, __aeabi_fdiv);
750
751 // __aeabi_XXXX_glibc: Imported code from glibc soft-fp bundle for calculation accuracy improvement. See CR 6757269.
752 FUNCTION_CASE(entry, __aeabi_dadd_glibc);
753 FUNCTION_CASE(entry, __aeabi_dmul);
754 FUNCTION_CASE(entry, __aeabi_dsub_glibc);
755 FUNCTION_CASE(entry, __aeabi_ddiv);
756
757 FUNCTION_CASE(entry, __aeabi_f2d);
758 FUNCTION_CASE(entry, __aeabi_d2f);
759 FUNCTION_CASE(entry, __aeabi_i2f);
760 FUNCTION_CASE(entry, __aeabi_i2d);
761 FUNCTION_CASE(entry, __aeabi_f2iz);
762
763 FUNCTION_CASE(entry, SharedRuntime::fcmpl);
764 FUNCTION_CASE(entry, SharedRuntime::fcmpg);
765 FUNCTION_CASE(entry, SharedRuntime::dcmpl);
766 FUNCTION_CASE(entry, SharedRuntime::dcmpg);
767
768 FUNCTION_CASE(entry, SharedRuntime::unordered_fcmplt);
769 FUNCTION_CASE(entry, SharedRuntime::unordered_dcmplt);
770 FUNCTION_CASE(entry, SharedRuntime::unordered_fcmple);
771 FUNCTION_CASE(entry, SharedRuntime::unordered_dcmple);
772 FUNCTION_CASE(entry, SharedRuntime::unordered_fcmpge);
773 FUNCTION_CASE(entry, SharedRuntime::unordered_dcmpge);
774 FUNCTION_CASE(entry, SharedRuntime::unordered_fcmpgt);
775 FUNCTION_CASE(entry, SharedRuntime::unordered_dcmpgt);
776
777 FUNCTION_CASE(entry, SharedRuntime::fneg);
778 FUNCTION_CASE(entry, SharedRuntime::dneg);
779
780 FUNCTION_CASE(entry, __aeabi_fcmpeq);
781 FUNCTION_CASE(entry, __aeabi_fcmplt);
782 FUNCTION_CASE(entry, __aeabi_fcmple);
783 FUNCTION_CASE(entry, __aeabi_fcmpge);
784 FUNCTION_CASE(entry, __aeabi_fcmpgt);
785
786 FUNCTION_CASE(entry, __aeabi_dcmpeq);
787 FUNCTION_CASE(entry, __aeabi_dcmplt);
788 FUNCTION_CASE(entry, __aeabi_dcmple);
789 FUNCTION_CASE(entry, __aeabi_dcmpge);
790 FUNCTION_CASE(entry, __aeabi_dcmpgt);
791 #undef FUNCTION_CASE
792 return "";
793 }
794 #else // __SOFTFP__
795 const char *Runtime1::pd_name_for_address(address entry) {
796 return "<unknown function>";
797 }
798 #endif // __SOFTFP__