1 /*
2 * Copyright (c) 1999, 2018, 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 "nativeInst_x86.hpp"
32 #include "oops/objArrayKlass.hpp"
33 #include "runtime/sharedRuntime.hpp"
34 #include "utilities/align.hpp"
35 #include "utilities/macros.hpp"
36 #include "vmreg_x86.inline.hpp"
37
38
39 #define __ ce->masm()->
40
41 float ConversionStub::float_zero = 0.0;
42 double ConversionStub::double_zero = 0.0;
43
44 void ConversionStub::emit_code(LIR_Assembler* ce) {
45 __ bind(_entry);
46 assert(bytecode() == Bytecodes::_f2i || bytecode() == Bytecodes::_d2i, "other conversions do not require stub");
47
48
49 if (input()->is_single_xmm()) {
50 __ comiss(input()->as_xmm_float_reg(),
51 ExternalAddress((address)&float_zero));
52 } else if (input()->is_double_xmm()) {
53 __ comisd(input()->as_xmm_double_reg(),
54 ExternalAddress((address)&double_zero));
55 } else {
56 LP64_ONLY(ShouldNotReachHere());
57 __ push(rax);
58 __ ftst();
59 __ fnstsw_ax();
60 __ sahf();
61 __ pop(rax);
62 }
63
64 Label NaN, do_return;
65 __ jccb(Assembler::parity, NaN);
66 __ jccb(Assembler::below, do_return);
67
68 // input is > 0 -> return maxInt
69 // result register already contains 0x80000000, so subtracting 1 gives 0x7fffffff
70 __ decrement(result()->as_register());
71 __ jmpb(do_return);
72
73 // input is NaN -> return 0
74 __ bind(NaN);
75 __ xorptr(result()->as_register(), result()->as_register());
76
77 __ bind(do_return);
78 __ jmp(_continuation);
79 }
80
81 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
82 __ bind(_entry);
83 Metadata *m = _method->as_constant_ptr()->as_metadata();
84 ce->store_parameter(m, 1);
85 ce->store_parameter(_bci, 0);
86 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));
87 ce->add_call_info_here(_info);
88 ce->verify_oop_map(_info);
89 __ jmp(_continuation);
90 }
91
92 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, LIR_Opr array)
93 : _index(index), _array(array), _throw_index_out_of_bounds_exception(false) {
94 assert(info != NULL, "must have info");
95 _info = new CodeEmitInfo(info);
96 }
97
98 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index)
99 : _index(index), _array(NULL), _throw_index_out_of_bounds_exception(true) {
100 assert(info != NULL, "must have info");
101 _info = new CodeEmitInfo(info);
102 }
103
104 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
105 __ bind(_entry);
106 if (_info->deoptimize_on_exception()) {
107 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
108 __ call(RuntimeAddress(a));
109 ce->add_call_info_here(_info);
110 ce->verify_oop_map(_info);
111 debug_only(__ should_not_reach_here());
112 return;
113 }
114
115 // pass the array index on stack because all registers must be preserved
116 if (_index->is_cpu_register()) {
117 ce->store_parameter(_index->as_register(), 0);
118 } else {
119 ce->store_parameter(_index->as_jint(), 0);
120 }
121 Runtime1::StubID stub_id;
122 if (_throw_index_out_of_bounds_exception) {
123 stub_id = Runtime1::throw_index_exception_id;
124 } else {
125 stub_id = Runtime1::throw_range_check_failed_id;
126 ce->store_parameter(_array->as_pointer_register(), 1);
127 }
128 __ call(RuntimeAddress(Runtime1::entry_for(stub_id)));
129 ce->add_call_info_here(_info);
130 ce->verify_oop_map(_info);
131 debug_only(__ should_not_reach_here());
132 }
133
134 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
135 _info = new CodeEmitInfo(info);
136 }
137
138 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
139 __ bind(_entry);
140 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
141 __ call(RuntimeAddress(a));
142 ce->add_call_info_here(_info);
143 ce->verify_oop_map(_info);
144 debug_only(__ should_not_reach_here());
145 }
146
147 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
148 if (_offset != -1) {
149 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
150 }
151 __ bind(_entry);
152 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_div0_exception_id)));
153 ce->add_call_info_here(_info);
154 debug_only(__ should_not_reach_here());
155 }
156
157
158 // Implementation of LoadFlattenedArrayStub
159
160 LoadFlattenedArrayStub::LoadFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) {
161 _array = array;
162 _index = index;
163 _result = result;
164 _info = new CodeEmitInfo(info);
165 }
166
167 void LoadFlattenedArrayStub::visit(LIR_OpVisitState* visitor) {
168 visitor->do_slow_case(_info);
169 visitor->do_input(_array);
170 visitor->do_input(_index);
171 visitor->do_output(_result);
172
173 // Tell the register allocator that the runtime call will scratch rax.
174 visitor->do_output(FrameMap::rax_oop_opr);
175 }
176
177 void LoadFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
178 assert(__ rsp_offset() == 0, "frame size should be fixed");
179 __ bind(_entry);
180 ce->store_parameter(_array->as_register(), 1);
181 ce->store_parameter(_index->as_register(), 0);
182 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::load_flattened_array_id)));
183 ce->add_call_info_here(_info);
184 ce->verify_oop_map(_info);
185 if (_result->as_register() != rax) {
186 __ movptr(_result->as_register(), rax);
187 }
188 __ jmp(_continuation);
189 }
190
191
192 // Implementation of StoreFlattenedArrayStub
193
194 StoreFlattenedArrayStub::StoreFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr value, CodeEmitInfo* info) {
195 _array = array;
196 _index = index;
197 _value = value;
198 _info = new CodeEmitInfo(info);
199 }
200
201
202 void StoreFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
203 assert(__ rsp_offset() == 0, "frame size should be fixed");
204 __ bind(_entry);
205 ce->store_parameter(_array->as_register(), 2);
206 ce->store_parameter(_index->as_register(), 1);
207 ce->store_parameter(_value->as_register(), 0);
208 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::store_flattened_array_id)));
209 ce->add_call_info_here(_info);
210 ce->verify_oop_map(_info);
211 __ jmp(_continuation);
212 }
213
214
215 // Implementation of NewInstanceStub
216
217 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
218 _result = result;
219 _klass = klass;
220 _klass_reg = klass_reg;
221 _info = new CodeEmitInfo(info);
222 assert(stub_id == Runtime1::new_instance_id ||
223 stub_id == Runtime1::fast_new_instance_id ||
224 stub_id == Runtime1::fast_new_instance_init_check_id,
225 "need new_instance id");
226 _stub_id = stub_id;
227 }
228
229
230 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
231 assert(__ rsp_offset() == 0, "frame size should be fixed");
232 __ bind(_entry);
233 __ movptr(rdx, _klass_reg->as_register());
234 __ call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
235 ce->add_call_info_here(_info);
236 ce->verify_oop_map(_info);
237 assert(_result->as_register() == rax, "result must in rax,");
238 __ jmp(_continuation);
239 }
240
241
242 // Implementation of NewTypeArrayStub
243
244 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
245 _klass_reg = klass_reg;
246 _length = length;
247 _result = result;
248 _info = new CodeEmitInfo(info);
249 }
250
251
252 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
253 assert(__ rsp_offset() == 0, "frame size should be fixed");
254 __ bind(_entry);
255 assert(_length->as_register() == rbx, "length must in rbx,");
256 assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
257 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
258 ce->add_call_info_here(_info);
259 ce->verify_oop_map(_info);
260 assert(_result->as_register() == rax, "result must in rax,");
261 __ jmp(_continuation);
262 }
263
264
265 // Implementation of NewObjectArrayStub
266
267 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result,
268 CodeEmitInfo* info, bool is_value_type) {
269 _klass_reg = klass_reg;
270 _result = result;
271 _length = length;
272 _info = new CodeEmitInfo(info);
273 _is_value_type = is_value_type;
274 }
275
276
277 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
278 assert(__ rsp_offset() == 0, "frame size should be fixed");
279 __ bind(_entry);
280 assert(_length->as_register() == rbx, "length must in rbx,");
281 assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
282 if (_is_value_type) {
283 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_value_array_id)));
284 } else {
285 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
286 }
287 ce->add_call_info_here(_info);
288 ce->verify_oop_map(_info);
289 assert(_result->as_register() == rax, "result must in rax,");
290 __ jmp(_continuation);
291 }
292
293
294 // Implementation of MonitorAccessStubs
295
296 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info, CodeStub* throw_imse_stub, LIR_Opr scratch_reg)
297 : MonitorAccessStub(obj_reg, lock_reg)
298 {
299 _info = new CodeEmitInfo(info);
300 _throw_imse_stub = throw_imse_stub;
301 _scratch_reg = scratch_reg;
302 if (_throw_imse_stub != NULL) {
303 assert(_scratch_reg != LIR_OprFact::illegalOpr, "must be");
304 }
305 }
306
307
308 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
309 assert(__ rsp_offset() == 0, "frame size should be fixed");
310 __ bind(_entry);
311 if (_throw_imse_stub != NULL) {
312 // When we come here, _obj_reg has already been checked to be non-null.
313 Register mark = _scratch_reg->as_register();
314 __ movptr(mark, Address(_obj_reg->as_register(), oopDesc::mark_offset_in_bytes()));
315 __ testl(mark, markOopDesc::always_locked_pattern);
316 __ jcc(Assembler::notZero, *_throw_imse_stub->entry());
317 }
318 ce->store_parameter(_obj_reg->as_register(), 1);
319 ce->store_parameter(_lock_reg->as_register(), 0);
320 Runtime1::StubID enter_id;
321 if (ce->compilation()->has_fpu_code()) {
322 enter_id = Runtime1::monitorenter_id;
323 } else {
324 enter_id = Runtime1::monitorenter_nofpu_id;
325 }
326 __ call(RuntimeAddress(Runtime1::entry_for(enter_id)));
327 ce->add_call_info_here(_info);
328 ce->verify_oop_map(_info);
329 __ jmp(_continuation);
330 }
331
332
333 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
334 __ bind(_entry);
335 if (_compute_lock) {
336 // lock_reg was destroyed by fast unlocking attempt => recompute it
337 ce->monitor_address(_monitor_ix, _lock_reg);
338 }
339 ce->store_parameter(_lock_reg->as_register(), 0);
340 // note: non-blocking leaf routine => no call info needed
341 Runtime1::StubID exit_id;
342 if (ce->compilation()->has_fpu_code()) {
343 exit_id = Runtime1::monitorexit_id;
344 } else {
345 exit_id = Runtime1::monitorexit_nofpu_id;
346 }
347 __ call(RuntimeAddress(Runtime1::entry_for(exit_id)));
348 __ jmp(_continuation);
349 }
350
351
352 // Implementation of patching:
353 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
354 // - Replace original code with a call to the stub
355 // At Runtime:
356 // - call to stub, jump to runtime
357 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
358 // - in runtime: after initializing class, restore original code, reexecute instruction
359
360 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
361
362 void PatchingStub::align_patch_site(MacroAssembler* masm) {
363 // We're patching a 5-7 byte instruction on intel and we need to
364 // make sure that we don't see a piece of the instruction. It
365 // appears mostly impossible on Intel to simply invalidate other
366 // processors caches and since they may do aggressive prefetch it's
367 // very hard to make a guess about what code might be in the icache.
368 // Force the instruction to be double word aligned so that it
369 // doesn't span a cache line.
370 masm->align(align_up((int)NativeGeneralJump::instruction_size, wordSize));
371 }
372
373 void PatchingStub::emit_code(LIR_Assembler* ce) {
374 assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF, "not enough room for call");
375
376 Label call_patch;
377
378 // static field accesses have special semantics while the class
379 // initializer is being run so we emit a test which can be used to
380 // check that this code is being executed by the initializing
381 // thread.
382 address being_initialized_entry = __ pc();
383 if (CommentedAssembly) {
384 __ block_comment(" patch template");
385 }
386 if (_id == load_klass_id) {
387 // produce a copy of the load klass instruction for use by the being initialized case
388 #ifdef ASSERT
389 address start = __ pc();
390 #endif
391 Metadata* o = NULL;
392 __ mov_metadata(_obj, o);
393 #ifdef ASSERT
394 for (int i = 0; i < _bytes_to_copy; i++) {
395 address ptr = (address)(_pc_start + i);
396 int a_byte = (*ptr) & 0xFF;
397 assert(a_byte == *start++, "should be the same code");
398 }
399 #endif
400 } else if (_id == load_mirror_id) {
401 // produce a copy of the load mirror instruction for use by the being
402 // initialized case
403 #ifdef ASSERT
404 address start = __ pc();
405 #endif
406 jobject o = NULL;
407 __ movoop(_obj, o);
408 #ifdef ASSERT
409 for (int i = 0; i < _bytes_to_copy; i++) {
410 address ptr = (address)(_pc_start + i);
411 int a_byte = (*ptr) & 0xFF;
412 assert(a_byte == *start++, "should be the same code");
413 }
414 #endif
415 } else {
416 // make a copy the code which is going to be patched.
417 for (int i = 0; i < _bytes_to_copy; i++) {
418 address ptr = (address)(_pc_start + i);
419 int a_byte = (*ptr) & 0xFF;
420 __ emit_int8(a_byte);
421 *ptr = 0x90; // make the site look like a nop
422 }
423 }
424
425 address end_of_patch = __ pc();
426 int bytes_to_skip = 0;
427 if (_id == load_mirror_id) {
428 int offset = __ offset();
429 if (CommentedAssembly) {
430 __ block_comment(" being_initialized check");
431 }
432 assert(_obj != noreg, "must be a valid register");
433 Register tmp = rax;
434 Register tmp2 = rbx;
435 __ push(tmp);
436 __ push(tmp2);
437 // Load without verification to keep code size small. We need it because
438 // begin_initialized_entry_offset has to fit in a byte. Also, we know it's not null.
439 __ movptr(tmp2, Address(_obj, java_lang_Class::klass_offset_in_bytes()));
440 __ get_thread(tmp);
441 __ cmpptr(tmp, Address(tmp2, InstanceKlass::init_thread_offset()));
442 __ pop(tmp2);
443 __ pop(tmp);
444 __ jcc(Assembler::notEqual, call_patch);
445
446 // access_field patches may execute the patched code before it's
447 // copied back into place so we need to jump back into the main
448 // code of the nmethod to continue execution.
449 __ jmp(_patch_site_continuation);
450
451 // make sure this extra code gets skipped
452 bytes_to_skip += __ offset() - offset;
453 }
454 if (CommentedAssembly) {
455 __ block_comment("patch data encoded as movl");
456 }
457 // Now emit the patch record telling the runtime how to find the
458 // pieces of the patch. We only need 3 bytes but for readability of
459 // the disassembly we make the data look like a movl reg, imm32,
460 // which requires 5 bytes
461 int sizeof_patch_record = 5;
462 bytes_to_skip += sizeof_patch_record;
463
464 // emit the offsets needed to find the code to patch
465 int being_initialized_entry_offset = __ pc() - being_initialized_entry + sizeof_patch_record;
466
467 __ emit_int8((unsigned char)0xB8);
468 __ emit_int8(0);
469 __ emit_int8(being_initialized_entry_offset);
470 __ emit_int8(bytes_to_skip);
471 __ emit_int8(_bytes_to_copy);
472 address patch_info_pc = __ pc();
473 assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");
474
475 address entry = __ pc();
476 NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
477 address target = NULL;
478 relocInfo::relocType reloc_type = relocInfo::none;
479 switch (_id) {
480 case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
481 case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); reloc_type = relocInfo::metadata_type; break;
482 case load_mirror_id: target = Runtime1::entry_for(Runtime1::load_mirror_patching_id); reloc_type = relocInfo::oop_type; break;
483 case load_appendix_id: target = Runtime1::entry_for(Runtime1::load_appendix_patching_id); reloc_type = relocInfo::oop_type; break;
484 default: ShouldNotReachHere();
485 }
486 __ bind(call_patch);
487
488 if (CommentedAssembly) {
489 __ block_comment("patch entry point");
490 }
491 __ call(RuntimeAddress(target));
492 assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
493 ce->add_call_info_here(_info);
494 int jmp_off = __ offset();
495 __ jmp(_patch_site_entry);
496 // Add enough nops so deoptimization can overwrite the jmp above with a call
497 // and not destroy the world. We cannot use fat nops here, since the concurrent
498 // code rewrite may transiently create the illegal instruction sequence.
499 for (int j = __ offset() ; j < jmp_off + 5 ; j++ ) {
500 __ nop();
501 }
502 if (_id == load_klass_id || _id == load_mirror_id || _id == load_appendix_id) {
503 CodeSection* cs = __ code_section();
504 RelocIterator iter(cs, (address)_pc_start, (address)(_pc_start + 1));
505 relocInfo::change_reloc_info_for_address(&iter, (address) _pc_start, reloc_type, relocInfo::none);
506 }
507 }
508
509
510 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
511 __ bind(_entry);
512 ce->store_parameter(_trap_request, 0);
513 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
514 ce->add_call_info_here(_info);
515 DEBUG_ONLY(__ should_not_reach_here());
516 }
517
518
519 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
520 address a;
521 if (_info->deoptimize_on_exception()) {
522 // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
523 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
524 } else {
525 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
526 }
527
528 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
529 __ bind(_entry);
530 __ call(RuntimeAddress(a));
531 ce->add_call_info_here(_info);
532 ce->verify_oop_map(_info);
533 debug_only(__ should_not_reach_here());
534 }
535
536
537 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
538 assert(__ rsp_offset() == 0, "frame size should be fixed");
539
540 __ bind(_entry);
541 // pass the object on stack because all registers must be preserved
542 if (_obj->is_cpu_register()) {
543 ce->store_parameter(_obj->as_register(), 0);
544 }
545 __ call(RuntimeAddress(Runtime1::entry_for(_stub)));
546 ce->add_call_info_here(_info);
547 debug_only(__ should_not_reach_here());
548 }
549
550
551 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
552 //---------------slow case: call to native-----------------
553 __ bind(_entry);
554 // Figure out where the args should go
555 // This should really convert the IntrinsicID to the Method* and signature
556 // but I don't know how to do that.
557 //
558 VMRegPair args[5];
559 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
560 SharedRuntime::java_calling_convention(signature, args, 5, true);
561
562 // push parameters
563 // (src, src_pos, dest, destPos, length)
564 Register r[5];
565 r[0] = src()->as_register();
566 r[1] = src_pos()->as_register();
567 r[2] = dst()->as_register();
568 r[3] = dst_pos()->as_register();
569 r[4] = length()->as_register();
570
571 // next registers will get stored on the stack
572 for (int i = 0; i < 5 ; i++ ) {
573 VMReg r_1 = args[i].first();
574 if (r_1->is_stack()) {
575 int st_off = r_1->reg2stack() * wordSize;
576 __ movptr (Address(rsp, st_off), r[i]);
577 } else {
578 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
579 }
580 }
581
582 ce->align_call(lir_static_call);
583
584 ce->emit_static_call_stub();
585 if (ce->compilation()->bailed_out()) {
586 return; // CodeCache is full
587 }
588 AddressLiteral resolve(SharedRuntime::get_resolve_static_call_stub(),
589 relocInfo::static_call_type);
590 __ call(resolve);
591 ce->add_call_info_here(info());
592
593 #ifndef PRODUCT
594 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
595 #endif
596
597 __ jmp(_continuation);
598 }
599
600 #undef __