1 /*
2 * Copyright (c) 1999, 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 "c1/c1_CodeStubs.hpp"
27 #include "c1/c1_FrameMap.hpp"
28 #include "c1/c1_LIRAssembler.hpp"
29 #include "c1/c1_MacroAssembler.hpp"
30 #include "c1/c1_Runtime1.hpp"
31 #include "classfile/javaClasses.hpp"
32 #include "nativeInst_x86.hpp"
33 #include "oops/objArrayKlass.hpp"
34 #include "runtime/sharedRuntime.hpp"
35 #include "utilities/align.hpp"
36 #include "utilities/macros.hpp"
37 #include "vmreg_x86.inline.hpp"
38
39
40 #define __ ce->masm()->
41
42 #ifndef _LP64
43 float ConversionStub::float_zero = 0.0;
44 double ConversionStub::double_zero = 0.0;
45
46 void ConversionStub::emit_code(LIR_Assembler* ce) {
47 __ bind(_entry);
48 assert(bytecode() == Bytecodes::_f2i || bytecode() == Bytecodes::_d2i, "other conversions do not require stub");
49
50
51 if (input()->is_single_xmm()) {
52 __ comiss(input()->as_xmm_float_reg(),
53 ExternalAddress((address)&float_zero));
54 } else if (input()->is_double_xmm()) {
55 __ comisd(input()->as_xmm_double_reg(),
56 ExternalAddress((address)&double_zero));
57 } else {
58 __ push(rax);
59 __ ftst();
60 __ fnstsw_ax();
61 __ sahf();
62 __ pop(rax);
63 }
64
65 Label NaN, do_return;
66 __ jccb(Assembler::parity, NaN);
67 __ jccb(Assembler::below, do_return);
68
69 // input is > 0 -> return maxInt
70 // result register already contains 0x80000000, so subtracting 1 gives 0x7fffffff
71 __ decrement(result()->as_register());
72 __ jmpb(do_return);
73
74 // input is NaN -> return 0
75 __ bind(NaN);
76 __ xorptr(result()->as_register(), result()->as_register());
77
78 __ bind(do_return);
79 __ jmp(_continuation);
80 }
81 #endif // !_LP64
82
83 void C1SafepointPollStub::emit_code(LIR_Assembler* ce) {
84 __ bind(_entry);
85 InternalAddress safepoint_pc(ce->masm()->pc() - ce->masm()->offset() + safepoint_offset());
86 #ifdef _LP64
87 __ lea(rscratch1, safepoint_pc);
88 __ movptr(Address(r15_thread, JavaThread::saved_exception_pc_offset()), rscratch1);
89 #else
90 const Register tmp1 = rcx;
91 const Register tmp2 = rdx;
92 __ push(tmp1);
93 __ push(tmp2);
94
95 __ lea(tmp1, safepoint_pc);
96 __ get_thread(tmp2);
97 __ movptr(Address(tmp2, JavaThread::saved_exception_pc_offset()), tmp1);
98
99 __ pop(tmp2);
100 __ pop(tmp1);
101 #endif /* _LP64 */
102 assert(SharedRuntime::polling_page_return_handler_blob() != nullptr,
103 "polling page return stub not created yet");
104
105 address stub = SharedRuntime::polling_page_return_handler_blob()->entry_point();
106 __ jump(RuntimeAddress(stub));
107 }
108
109 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
110 __ bind(_entry);
111 Metadata *m = _method->as_constant_ptr()->as_metadata();
112 ce->store_parameter(m, 1);
113 ce->store_parameter(_bci, 0);
114 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));
115 ce->add_call_info_here(_info);
116 ce->verify_oop_map(_info);
117 __ jmp(_continuation);
118 }
119
120 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
121 __ bind(_entry);
122 if (_info->deoptimize_on_exception()) {
123 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
124 __ call(RuntimeAddress(a));
125 ce->add_call_info_here(_info);
126 ce->verify_oop_map(_info);
127 debug_only(__ should_not_reach_here());
128 return;
129 }
130
131 // pass the array index on stack because all registers must be preserved
132 if (_index->is_cpu_register()) {
133 ce->store_parameter(_index->as_register(), 0);
134 } else {
135 ce->store_parameter(_index->as_jint(), 0);
136 }
137 Runtime1::StubID stub_id;
138 if (_throw_index_out_of_bounds_exception) {
139 stub_id = Runtime1::throw_index_exception_id;
140 } else {
141 stub_id = Runtime1::throw_range_check_failed_id;
142 ce->store_parameter(_array->as_pointer_register(), 1);
143 }
144 __ call(RuntimeAddress(Runtime1::entry_for(stub_id)));
145 ce->add_call_info_here(_info);
146 ce->verify_oop_map(_info);
147 debug_only(__ should_not_reach_here());
148 }
149
150 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
151 _info = new CodeEmitInfo(info);
152 }
153
154 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
155 __ bind(_entry);
156 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
157 __ call(RuntimeAddress(a));
158 ce->add_call_info_here(_info);
159 ce->verify_oop_map(_info);
160 debug_only(__ should_not_reach_here());
161 }
162
163 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
164 if (_offset != -1) {
165 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
166 }
167 __ bind(_entry);
168 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_div0_exception_id)));
169 ce->add_call_info_here(_info);
170 debug_only(__ should_not_reach_here());
171 }
172
173
174 // Implementation of LoadFlattenedArrayStub
175
176 LoadFlattenedArrayStub::LoadFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) {
177 _array = array;
178 _index = index;
179 _result = result;
180 // Tell the register allocator that the runtime call will scratch rax.
181 _scratch_reg = FrameMap::rax_oop_opr;
182 _info = new CodeEmitInfo(info);
183 }
184
185 void LoadFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
186 assert(__ rsp_offset() == 0, "frame size should be fixed");
187 __ bind(_entry);
188 ce->store_parameter(_array->as_register(), 1);
189 ce->store_parameter(_index->as_register(), 0);
190 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::load_flat_array_id)));
191 ce->add_call_info_here(_info);
192 ce->verify_oop_map(_info);
193 if (_result->as_register() != rax) {
194 __ movptr(_result->as_register(), rax);
195 }
196 __ jmp(_continuation);
197 }
198
199
200 // Implementation of StoreFlattenedArrayStub
201
202 StoreFlattenedArrayStub::StoreFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr value, CodeEmitInfo* info) {
203 _array = array;
204 _index = index;
205 _value = value;
206 // Tell the register allocator that the runtime call will scratch rax.
207 _scratch_reg = FrameMap::rax_oop_opr;
208 _info = new CodeEmitInfo(info);
209 }
210
211
212 void StoreFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
213 assert(__ rsp_offset() == 0, "frame size should be fixed");
214 __ bind(_entry);
215 ce->store_parameter(_array->as_register(), 2);
216 ce->store_parameter(_index->as_register(), 1);
217 ce->store_parameter(_value->as_register(), 0);
218 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::store_flat_array_id)));
219 ce->add_call_info_here(_info);
220 ce->verify_oop_map(_info);
221 __ jmp(_continuation);
222 }
223
224
225 // Implementation of SubstitutabilityCheckStub
226
227 SubstitutabilityCheckStub::SubstitutabilityCheckStub(LIR_Opr left, LIR_Opr right, CodeEmitInfo* info) {
228 _left = left;
229 _right = right;
230 // Tell the register allocator that the runtime call will scratch rax.
231 _scratch_reg = FrameMap::rax_oop_opr;
232 _info = new CodeEmitInfo(info);
233 }
234
235 void SubstitutabilityCheckStub::emit_code(LIR_Assembler* ce) {
236 assert(__ rsp_offset() == 0, "frame size should be fixed");
237 __ bind(_entry);
238 ce->store_parameter(_left->as_register(), 1);
239 ce->store_parameter(_right->as_register(), 0);
240 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::substitutability_check_id)));
241 ce->add_call_info_here(_info);
242 ce->verify_oop_map(_info);
243 __ jmp(_continuation);
244 }
245
246
247 // Implementation of NewInstanceStub
248
249 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
250 _result = result;
251 _klass = klass;
252 _klass_reg = klass_reg;
253 _info = new CodeEmitInfo(info);
254 assert(stub_id == Runtime1::new_instance_id ||
255 stub_id == Runtime1::fast_new_instance_id ||
256 stub_id == Runtime1::fast_new_instance_init_check_id,
257 "need new_instance id");
258 _stub_id = stub_id;
259 }
260
261
262 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
263 assert(__ rsp_offset() == 0, "frame size should be fixed");
264 __ bind(_entry);
265 __ movptr(rdx, _klass_reg->as_register());
266 __ call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
267 ce->add_call_info_here(_info);
268 ce->verify_oop_map(_info);
269 assert(_result->as_register() == rax, "result must in rax,");
270 __ jmp(_continuation);
271 }
272
273
274 // Implementation of NewTypeArrayStub
275
276 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
277 _klass_reg = klass_reg;
278 _length = length;
279 _result = result;
280 _info = new CodeEmitInfo(info);
281 }
282
283
284 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
285 assert(__ rsp_offset() == 0, "frame size should be fixed");
286 __ bind(_entry);
287 assert(_length->as_register() == rbx, "length must in rbx,");
288 assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
289 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
290 ce->add_call_info_here(_info);
291 ce->verify_oop_map(_info);
292 assert(_result->as_register() == rax, "result must in rax,");
293 __ jmp(_continuation);
294 }
295
296
297 // Implementation of NewObjectArrayStub
298
299 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result,
300 CodeEmitInfo* info, bool is_null_free) {
301 _klass_reg = klass_reg;
302 _result = result;
303 _length = length;
304 _info = new CodeEmitInfo(info);
305 _is_null_free = is_null_free;
306 }
307
308
309 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
310 assert(__ rsp_offset() == 0, "frame size should be fixed");
311 __ bind(_entry);
312 assert(_length->as_register() == rbx, "length must in rbx,");
313 assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
314 if (_is_null_free) {
315 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_null_free_array_id)));
316 } else {
317 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
318 }
319 ce->add_call_info_here(_info);
320 ce->verify_oop_map(_info);
321 assert(_result->as_register() == rax, "result must in rax,");
322 __ jmp(_continuation);
323 }
324
325 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
326 assert(__ rsp_offset() == 0, "frame size should be fixed");
327 __ bind(_entry);
328 if (_throw_ie_stub != nullptr) {
329 // When we come here, _obj_reg has already been checked to be non-null.
330 const int is_value_mask = markWord::inline_type_pattern;
331 Register mark = _scratch_reg->as_register();
332 __ movptr(mark, Address(_obj_reg->as_register(), oopDesc::mark_offset_in_bytes()));
333 __ andptr(mark, is_value_mask);
334 __ cmpl(mark, is_value_mask);
335 __ jcc(Assembler::equal, *_throw_ie_stub->entry());
336 }
337 ce->store_parameter(_obj_reg->as_register(), 1);
338 ce->store_parameter(_lock_reg->as_register(), 0);
339 Runtime1::StubID enter_id;
340 if (ce->compilation()->has_fpu_code()) {
341 enter_id = Runtime1::monitorenter_id;
342 } else {
343 enter_id = Runtime1::monitorenter_nofpu_id;
344 }
345 __ call(RuntimeAddress(Runtime1::entry_for(enter_id)));
346 ce->add_call_info_here(_info);
347 ce->verify_oop_map(_info);
348 __ jmp(_continuation);
349 }
350
351
352 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
353 __ bind(_entry);
354 if (_compute_lock) {
355 // lock_reg was destroyed by fast unlocking attempt => recompute it
356 ce->monitor_address(_monitor_ix, _lock_reg);
357 }
358 ce->store_parameter(_lock_reg->as_register(), 0);
359 // note: non-blocking leaf routine => no call info needed
360 Runtime1::StubID exit_id;
361 if (ce->compilation()->has_fpu_code()) {
362 exit_id = Runtime1::monitorexit_id;
363 } else {
364 exit_id = Runtime1::monitorexit_nofpu_id;
365 }
366 __ call(RuntimeAddress(Runtime1::entry_for(exit_id)));
367 __ jmp(_continuation);
368 }
369
370
371 // Implementation of patching:
372 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
373 // - Replace original code with a call to the stub
374 // At Runtime:
375 // - call to stub, jump to runtime
376 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
377 // - in runtime: after initializing class, restore original code, reexecute instruction
378
379 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
380
381 void PatchingStub::align_patch_site(MacroAssembler* masm) {
382 // We're patching a 5-7 byte instruction on intel and we need to
383 // make sure that we don't see a piece of the instruction. It
384 // appears mostly impossible on Intel to simply invalidate other
385 // processors caches and since they may do aggressive prefetch it's
386 // very hard to make a guess about what code might be in the icache.
387 // Force the instruction to be double word aligned so that it
388 // doesn't span a cache line.
389 masm->align(align_up((int)NativeGeneralJump::instruction_size, wordSize));
390 }
391
392 void PatchingStub::emit_code(LIR_Assembler* ce) {
393 assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF, "not enough room for call");
394
395 Label call_patch;
396
397 // static field accesses have special semantics while the class
398 // initializer is being run so we emit a test which can be used to
399 // check that this code is being executed by the initializing
400 // thread.
401 address being_initialized_entry = __ pc();
402 if (CommentedAssembly) {
403 __ block_comment(" patch template");
404 }
405 if (_id == load_klass_id) {
406 // produce a copy of the load klass instruction for use by the being initialized case
407 #ifdef ASSERT
408 address start = __ pc();
409 #endif
410 Metadata* o = nullptr;
411 __ mov_metadata(_obj, o);
412 #ifdef ASSERT
413 for (int i = 0; i < _bytes_to_copy; i++) {
414 address ptr = (address)(_pc_start + i);
415 int a_byte = (*ptr) & 0xFF;
416 assert(a_byte == *start++, "should be the same code");
417 }
418 #endif
419 } else if (_id == load_mirror_id) {
420 // produce a copy of the load mirror instruction for use by the being
421 // initialized case
422 #ifdef ASSERT
423 address start = __ pc();
424 #endif
425 jobject o = nullptr;
426 __ movoop(_obj, o);
427 #ifdef ASSERT
428 for (int i = 0; i < _bytes_to_copy; i++) {
429 address ptr = (address)(_pc_start + i);
430 int a_byte = (*ptr) & 0xFF;
431 assert(a_byte == *start++, "should be the same code");
432 }
433 #endif
434 } else {
435 // make a copy the code which is going to be patched.
436 for (int i = 0; i < _bytes_to_copy; i++) {
437 address ptr = (address)(_pc_start + i);
438 int a_byte = (*ptr) & 0xFF;
439 __ emit_int8(a_byte);
440 *ptr = 0x90; // make the site look like a nop
441 }
442 }
443
444 address end_of_patch = __ pc();
445 int bytes_to_skip = 0;
446 if (_id == load_mirror_id) {
447 int offset = __ offset();
448 if (CommentedAssembly) {
449 __ block_comment(" being_initialized check");
450 }
451 assert(_obj != noreg, "must be a valid register");
452 Register tmp = rax;
453 Register tmp2 = rbx;
454 __ push(tmp);
455 __ push(tmp2);
456 // Load without verification to keep code size small. We need it because
457 // begin_initialized_entry_offset has to fit in a byte. Also, we know it's not null.
458 __ movptr(tmp2, Address(_obj, java_lang_Class::klass_offset()));
459 __ get_thread(tmp);
460 __ cmpptr(tmp, Address(tmp2, InstanceKlass::init_thread_offset()));
461 __ pop(tmp2);
462 __ pop(tmp);
463 __ jcc(Assembler::notEqual, call_patch);
464
465 // access_field patches may execute the patched code before it's
466 // copied back into place so we need to jump back into the main
467 // code of the nmethod to continue execution.
468 __ jmp(_patch_site_continuation);
469
470 // make sure this extra code gets skipped
471 bytes_to_skip += __ offset() - offset;
472 }
473 if (CommentedAssembly) {
474 __ block_comment("patch data encoded as movl");
475 }
476 // Now emit the patch record telling the runtime how to find the
477 // pieces of the patch. We only need 3 bytes but for readability of
478 // the disassembly we make the data look like a movl reg, imm32,
479 // which requires 5 bytes
480 int sizeof_patch_record = 5;
481 bytes_to_skip += sizeof_patch_record;
482
483 // emit the offsets needed to find the code to patch
484 int being_initialized_entry_offset = __ pc() - being_initialized_entry + sizeof_patch_record;
485
486 __ emit_int8((unsigned char)0xB8);
487 __ emit_int8(0);
488 __ emit_int8(being_initialized_entry_offset);
489 __ emit_int8(bytes_to_skip);
490 __ emit_int8(_bytes_to_copy);
491 address patch_info_pc = __ pc();
492 assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");
493
494 address entry = __ pc();
495 NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
496 address target = nullptr;
497 relocInfo::relocType reloc_type = relocInfo::none;
498 switch (_id) {
499 case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
500 case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); reloc_type = relocInfo::metadata_type; break;
501 case load_mirror_id: target = Runtime1::entry_for(Runtime1::load_mirror_patching_id); reloc_type = relocInfo::oop_type; break;
502 case load_appendix_id: target = Runtime1::entry_for(Runtime1::load_appendix_patching_id); reloc_type = relocInfo::oop_type; break;
503 default: ShouldNotReachHere();
504 }
505 __ bind(call_patch);
506
507 if (CommentedAssembly) {
508 __ block_comment("patch entry point");
509 }
510 __ call(RuntimeAddress(target));
511 assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
512 ce->add_call_info_here(_info);
513 int jmp_off = __ offset();
514 __ jmp(_patch_site_entry);
515 // Add enough nops so deoptimization can overwrite the jmp above with a call
516 // and not destroy the world. We cannot use fat nops here, since the concurrent
517 // code rewrite may transiently create the illegal instruction sequence.
518 for (int j = __ offset() ; j < jmp_off + 5 ; j++ ) {
519 __ nop();
520 }
521 if (_id == load_klass_id || _id == load_mirror_id || _id == load_appendix_id) {
522 CodeSection* cs = __ code_section();
523 RelocIterator iter(cs, (address)_pc_start, (address)(_pc_start + 1));
524 relocInfo::change_reloc_info_for_address(&iter, (address) _pc_start, reloc_type, relocInfo::none);
525 }
526 }
527
528
529 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
530 __ bind(_entry);
531 ce->store_parameter(_trap_request, 0);
532 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
533 ce->add_call_info_here(_info);
534 DEBUG_ONLY(__ should_not_reach_here());
535 }
536
537
538 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
539 address a;
540 if (_info->deoptimize_on_exception()) {
541 // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
542 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
543 } else {
544 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
545 }
546
547 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
548 __ bind(_entry);
549 __ call(RuntimeAddress(a));
550 ce->add_call_info_here(_info);
551 ce->verify_oop_map(_info);
552 debug_only(__ should_not_reach_here());
553 }
554
555
556 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
557 assert(__ rsp_offset() == 0, "frame size should be fixed");
558
559 __ bind(_entry);
560 // pass the object on stack because all registers must be preserved
561 if (_obj->is_cpu_register()) {
562 ce->store_parameter(_obj->as_register(), 0);
563 }
564 __ call(RuntimeAddress(Runtime1::entry_for(_stub)));
565 ce->add_call_info_here(_info);
566 debug_only(__ should_not_reach_here());
567 }
568
569
570 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
571 //---------------slow case: call to native-----------------
572 __ bind(_entry);
573 // Figure out where the args should go
574 // This should really convert the IntrinsicID to the Method* and signature
575 // but I don't know how to do that.
576 //
577 VMRegPair args[5];
578 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
579 SharedRuntime::java_calling_convention(signature, args, 5);
580
581 // push parameters
582 // (src, src_pos, dest, destPos, length)
583 Register r[5];
584 r[0] = src()->as_register();
585 r[1] = src_pos()->as_register();
586 r[2] = dst()->as_register();
587 r[3] = dst_pos()->as_register();
588 r[4] = length()->as_register();
589
590 // next registers will get stored on the stack
591 for (int i = 0; i < 5 ; i++ ) {
592 VMReg r_1 = args[i].first();
593 if (r_1->is_stack()) {
594 int st_off = r_1->reg2stack() * wordSize;
595 __ movptr (Address(rsp, st_off), r[i]);
596 } else {
597 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
598 }
599 }
600
601 ce->align_call(lir_static_call);
602
603 ce->emit_static_call_stub();
604 if (ce->compilation()->bailed_out()) {
605 return; // CodeCache is full
606 }
607 AddressLiteral resolve(SharedRuntime::get_resolve_static_call_stub(),
608 relocInfo::static_call_type);
609 __ call(resolve);
610 ce->add_call_info_here(info());
611
612 #ifndef PRODUCT
613 if (PrintC1Statistics) {
614 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt), rscratch1);
615 }
616 #endif
617
618 __ jmp(_continuation);
619 }
620
621 #undef __