|
0
|
1 /*
|
|
1295
|
2 * Copyright 1999-2010 Sun Microsystems, Inc. All Rights Reserved.
|
|
0
|
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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
|
21 * have any questions.
|
|
|
22 *
|
|
|
23 */
|
|
|
24
|
|
|
25 #include "incls/_precompiled.incl"
|
|
|
26 #include "incls/_c1_CodeStubs_sparc.cpp.incl"
|
|
|
27
|
|
|
28 #define __ ce->masm()->
|
|
|
29
|
|
|
30 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,
|
|
|
31 bool throw_index_out_of_bounds_exception)
|
|
|
32 : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)
|
|
|
33 , _index(index)
|
|
|
34 {
|
|
|
35 _info = new CodeEmitInfo(info);
|
|
|
36 }
|
|
|
37
|
|
|
38
|
|
|
39 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
|
|
|
40 __ bind(_entry);
|
|
|
41
|
|
|
42 if (_index->is_register()) {
|
|
|
43 __ mov(_index->as_register(), G4);
|
|
|
44 } else {
|
|
|
45 __ set(_index->as_jint(), G4);
|
|
|
46 }
|
|
|
47 if (_throw_index_out_of_bounds_exception) {
|
|
|
48 __ call(Runtime1::entry_for(Runtime1::throw_index_exception_id), relocInfo::runtime_call_type);
|
|
|
49 } else {
|
|
|
50 __ call(Runtime1::entry_for(Runtime1::throw_range_check_failed_id), relocInfo::runtime_call_type);
|
|
|
51 }
|
|
|
52 __ delayed()->nop();
|
|
|
53 ce->add_call_info_here(_info);
|
|
|
54 ce->verify_oop_map(_info);
|
|
|
55 #ifdef ASSERT
|
|
|
56 __ should_not_reach_here();
|
|
|
57 #endif
|
|
|
58 }
|
|
|
59
|
|
|
60 #ifdef TIERED
|
|
|
61
|
|
|
62 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
|
|
|
63 __ bind(_entry);
|
|
|
64 __ set(_bci, G4);
|
|
|
65 __ call(Runtime1::entry_for(Runtime1::counter_overflow_id), relocInfo::runtime_call_type);
|
|
|
66 __ delayed()->nop();
|
|
|
67 ce->add_call_info_here(_info);
|
|
|
68 ce->verify_oop_map(_info);
|
|
|
69
|
|
|
70 __ br(Assembler::always, true, Assembler::pt, _continuation);
|
|
|
71 __ delayed()->nop();
|
|
|
72 }
|
|
|
73
|
|
|
74 #endif // TIERED
|
|
|
75
|
|
|
76 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
|
|
|
77 if (_offset != -1) {
|
|
|
78 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
|
|
|
79 }
|
|
|
80 __ bind(_entry);
|
|
|
81 __ call(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type);
|
|
|
82 __ delayed()->nop();
|
|
|
83 ce->add_call_info_here(_info);
|
|
|
84 ce->verify_oop_map(_info);
|
|
|
85 #ifdef ASSERT
|
|
|
86 __ should_not_reach_here();
|
|
|
87 #endif
|
|
|
88 }
|
|
|
89
|
|
|
90
|
|
|
91 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
|
|
|
92 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
|
|
|
93 __ bind(_entry);
|
|
|
94 __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id),
|
|
|
95 relocInfo::runtime_call_type);
|
|
|
96 __ delayed()->nop();
|
|
|
97 ce->add_call_info_here(_info);
|
|
|
98 ce->verify_oop_map(_info);
|
|
|
99 #ifdef ASSERT
|
|
|
100 __ should_not_reach_here();
|
|
|
101 #endif
|
|
|
102 }
|
|
|
103
|
|
|
104
|
|
|
105 // Implementation of SimpleExceptionStub
|
|
|
106 // Note: %g1 and %g3 are already in use
|
|
|
107 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
|
|
|
108 __ bind(_entry);
|
|
|
109 __ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type);
|
|
|
110
|
|
|
111 if (_obj->is_valid()) {
|
|
|
112 __ delayed()->mov(_obj->as_register(), G4); // _obj contains the optional argument to the stub
|
|
|
113 } else {
|
|
|
114 __ delayed()->mov(G0, G4);
|
|
|
115 }
|
|
|
116 ce->add_call_info_here(_info);
|
|
|
117 #ifdef ASSERT
|
|
|
118 __ should_not_reach_here();
|
|
|
119 #endif
|
|
|
120 }
|
|
|
121
|
|
|
122
|
|
|
123 // Implementation of ArrayStoreExceptionStub
|
|
|
124
|
|
|
125 ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info):
|
|
|
126 _info(info) {
|
|
|
127 }
|
|
|
128
|
|
|
129
|
|
|
130 void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) {
|
|
|
131 __ bind(_entry);
|
|
|
132 __ call(Runtime1::entry_for(Runtime1::throw_array_store_exception_id), relocInfo::runtime_call_type);
|
|
|
133 __ delayed()->nop();
|
|
|
134 ce->add_call_info_here(_info);
|
|
|
135 ce->verify_oop_map(_info);
|
|
|
136 #ifdef ASSERT
|
|
|
137 __ should_not_reach_here();
|
|
|
138 #endif
|
|
|
139 }
|
|
|
140
|
|
|
141
|
|
|
142
|
|
|
143
|
|
|
144 // Implementation of NewInstanceStub
|
|
|
145
|
|
|
146 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
|
|
|
147 _result = result;
|
|
|
148 _klass = klass;
|
|
|
149 _klass_reg = klass_reg;
|
|
|
150 _info = new CodeEmitInfo(info);
|
|
|
151 assert(stub_id == Runtime1::new_instance_id ||
|
|
|
152 stub_id == Runtime1::fast_new_instance_id ||
|
|
|
153 stub_id == Runtime1::fast_new_instance_init_check_id,
|
|
|
154 "need new_instance id");
|
|
|
155 _stub_id = stub_id;
|
|
|
156 }
|
|
|
157
|
|
|
158
|
|
|
159 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
|
|
|
160 __ bind(_entry);
|
|
|
161 __ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type);
|
|
|
162 __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
|
|
|
163 ce->add_call_info_here(_info);
|
|
|
164 ce->verify_oop_map(_info);
|
|
|
165 __ br(Assembler::always, false, Assembler::pt, _continuation);
|
|
|
166 __ delayed()->mov_or_nop(O0, _result->as_register());
|
|
|
167 }
|
|
|
168
|
|
|
169
|
|
|
170 // Implementation of NewTypeArrayStub
|
|
|
171 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
|
|
|
172 _klass_reg = klass_reg;
|
|
|
173 _length = length;
|
|
|
174 _result = result;
|
|
|
175 _info = new CodeEmitInfo(info);
|
|
|
176 }
|
|
|
177
|
|
|
178
|
|
|
179 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
|
|
|
180 __ bind(_entry);
|
|
|
181
|
|
|
182 __ mov(_length->as_register(), G4);
|
|
|
183 __ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type);
|
|
|
184 __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
|
|
|
185 ce->add_call_info_here(_info);
|
|
|
186 ce->verify_oop_map(_info);
|
|
|
187 __ br(Assembler::always, false, Assembler::pt, _continuation);
|
|
|
188 __ delayed()->mov_or_nop(O0, _result->as_register());
|
|
|
189 }
|
|
|
190
|
|
|
191
|
|
|
192 // Implementation of NewObjectArrayStub
|
|
|
193
|
|
|
194 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
|
|
|
195 _klass_reg = klass_reg;
|
|
|
196 _length = length;
|
|
|
197 _result = result;
|
|
|
198 _info = new CodeEmitInfo(info);
|
|
|
199 }
|
|
|
200
|
|
|
201
|
|
|
202 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
|
|
|
203 __ bind(_entry);
|
|
|
204
|
|
|
205 __ mov(_length->as_register(), G4);
|
|
|
206 __ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type);
|
|
|
207 __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
|
|
|
208 ce->add_call_info_here(_info);
|
|
|
209 ce->verify_oop_map(_info);
|
|
|
210 __ br(Assembler::always, false, Assembler::pt, _continuation);
|
|
|
211 __ delayed()->mov_or_nop(O0, _result->as_register());
|
|
|
212 }
|
|
|
213
|
|
|
214
|
|
|
215 // Implementation of MonitorAccessStubs
|
|
|
216 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
|
|
|
217 : MonitorAccessStub(obj_reg, lock_reg) {
|
|
|
218 _info = new CodeEmitInfo(info);
|
|
|
219 }
|
|
|
220
|
|
|
221
|
|
|
222 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
|
|
|
223 __ bind(_entry);
|
|
|
224 __ mov(_obj_reg->as_register(), G4);
|
|
|
225 if (ce->compilation()->has_fpu_code()) {
|
|
|
226 __ call(Runtime1::entry_for(Runtime1::monitorenter_id), relocInfo::runtime_call_type);
|
|
|
227 } else {
|
|
|
228 __ call(Runtime1::entry_for(Runtime1::monitorenter_nofpu_id), relocInfo::runtime_call_type);
|
|
|
229 }
|
|
|
230 __ delayed()->mov_or_nop(_lock_reg->as_register(), G5);
|
|
|
231 ce->add_call_info_here(_info);
|
|
|
232 ce->verify_oop_map(_info);
|
|
|
233 __ br(Assembler::always, true, Assembler::pt, _continuation);
|
|
|
234 __ delayed()->nop();
|
|
|
235 }
|
|
|
236
|
|
|
237
|
|
|
238 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
|
|
|
239 __ bind(_entry);
|
|
|
240 if (_compute_lock) {
|
|
|
241 ce->monitor_address(_monitor_ix, _lock_reg);
|
|
|
242 }
|
|
|
243 if (ce->compilation()->has_fpu_code()) {
|
|
|
244 __ call(Runtime1::entry_for(Runtime1::monitorexit_id), relocInfo::runtime_call_type);
|
|
|
245 } else {
|
|
|
246 __ call(Runtime1::entry_for(Runtime1::monitorexit_nofpu_id), relocInfo::runtime_call_type);
|
|
|
247 }
|
|
|
248
|
|
|
249 __ delayed()->mov_or_nop(_lock_reg->as_register(), G4);
|
|
|
250 __ br(Assembler::always, true, Assembler::pt, _continuation);
|
|
|
251 __ delayed()->nop();
|
|
|
252 }
|
|
|
253
|
|
|
254 // Implementation of patching:
|
|
|
255 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
|
|
|
256 // - Replace original code with a call to the stub
|
|
|
257 // At Runtime:
|
|
|
258 // - call to stub, jump to runtime
|
|
|
259 // - in runtime: preserve all registers (especially objects, i.e., source and destination object)
|
|
|
260 // - in runtime: after initializing class, restore original code, reexecute instruction
|
|
|
261
|
|
|
262 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
|
|
|
263
|
|
|
264 void PatchingStub::align_patch_site(MacroAssembler* ) {
|
|
|
265 // patch sites on sparc are always properly aligned.
|
|
|
266 }
|
|
|
267
|
|
|
268 void PatchingStub::emit_code(LIR_Assembler* ce) {
|
|
|
269 // copy original code here
|
|
|
270 assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF,
|
|
|
271 "not enough room for call");
|
|
|
272 assert((_bytes_to_copy & 0x3) == 0, "must copy a multiple of four bytes");
|
|
|
273
|
|
|
274 Label call_patch;
|
|
|
275
|
|
|
276 int being_initialized_entry = __ offset();
|
|
|
277
|
|
|
278 if (_id == load_klass_id) {
|
|
|
279 // produce a copy of the load klass instruction for use by the being initialized case
|
|
727
|
280 #ifdef ASSERT
|
|
0
|
281 address start = __ pc();
|
|
727
|
282 #endif
|
|
|
283 AddressLiteral addrlit(NULL, oop_Relocation::spec(_oop_index));
|
|
|
284 __ patchable_set(addrlit, _obj);
|
|
0
|
285
|
|
|
286 #ifdef ASSERT
|
|
|
287 for (int i = 0; i < _bytes_to_copy; i++) {
|
|
|
288 address ptr = (address)(_pc_start + i);
|
|
|
289 int a_byte = (*ptr) & 0xFF;
|
|
|
290 assert(a_byte == *start++, "should be the same code");
|
|
|
291 }
|
|
|
292 #endif
|
|
|
293 } else {
|
|
|
294 // make a copy the code which is going to be patched.
|
|
|
295 for (int i = 0; i < _bytes_to_copy; i++) {
|
|
|
296 address ptr = (address)(_pc_start + i);
|
|
|
297 int a_byte = (*ptr) & 0xFF;
|
|
|
298 __ a_byte (a_byte);
|
|
|
299 }
|
|
|
300 }
|
|
|
301
|
|
|
302 address end_of_patch = __ pc();
|
|
|
303 int bytes_to_skip = 0;
|
|
|
304 if (_id == load_klass_id) {
|
|
|
305 int offset = __ offset();
|
|
|
306 if (CommentedAssembly) {
|
|
|
307 __ block_comment(" being_initialized check");
|
|
|
308 }
|
|
|
309
|
|
|
310 // static field accesses have special semantics while the class
|
|
|
311 // initializer is being run so we emit a test which can be used to
|
|
|
312 // check that this code is being executed by the initializing
|
|
|
313 // thread.
|
|
|
314 assert(_obj != noreg, "must be a valid register");
|
|
|
315 assert(_oop_index >= 0, "must have oop index");
|
|
|
316 __ ld_ptr(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc), G3);
|
|
|
317 __ cmp(G2_thread, G3);
|
|
|
318 __ br(Assembler::notEqual, false, Assembler::pn, call_patch);
|
|
|
319 __ delayed()->nop();
|
|
|
320
|
|
|
321 // load_klass patches may execute the patched code before it's
|
|
|
322 // copied back into place so we need to jump back into the main
|
|
|
323 // code of the nmethod to continue execution.
|
|
|
324 __ br(Assembler::always, false, Assembler::pt, _patch_site_continuation);
|
|
|
325 __ delayed()->nop();
|
|
|
326
|
|
|
327 // make sure this extra code gets skipped
|
|
|
328 bytes_to_skip += __ offset() - offset;
|
|
|
329 }
|
|
|
330
|
|
|
331 // Now emit the patch record telling the runtime how to find the
|
|
|
332 // pieces of the patch. We only need 3 bytes but it has to be
|
|
|
333 // aligned as an instruction so emit 4 bytes.
|
|
|
334 int sizeof_patch_record = 4;
|
|
|
335 bytes_to_skip += sizeof_patch_record;
|
|
|
336
|
|
|
337 // emit the offsets needed to find the code to patch
|
|
|
338 int being_initialized_entry_offset = __ offset() - being_initialized_entry + sizeof_patch_record;
|
|
|
339
|
|
|
340 // Emit the patch record. We need to emit a full word, so emit an extra empty byte
|
|
|
341 __ a_byte(0);
|
|
|
342 __ a_byte(being_initialized_entry_offset);
|
|
|
343 __ a_byte(bytes_to_skip);
|
|
|
344 __ a_byte(_bytes_to_copy);
|
|
|
345 address patch_info_pc = __ pc();
|
|
|
346 assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");
|
|
|
347
|
|
|
348 address entry = __ pc();
|
|
|
349 NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
|
|
|
350 address target = NULL;
|
|
|
351 switch (_id) {
|
|
|
352 case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
|
|
|
353 case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break;
|
|
|
354 default: ShouldNotReachHere();
|
|
|
355 }
|
|
|
356 __ bind(call_patch);
|
|
|
357
|
|
|
358 if (CommentedAssembly) {
|
|
|
359 __ block_comment("patch entry point");
|
|
|
360 }
|
|
|
361 __ call(target, relocInfo::runtime_call_type);
|
|
|
362 __ delayed()->nop();
|
|
|
363 assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
|
|
|
364 ce->add_call_info_here(_info);
|
|
|
365 __ br(Assembler::always, false, Assembler::pt, _patch_site_entry);
|
|
|
366 __ delayed()->nop();
|
|
|
367 if (_id == load_klass_id) {
|
|
|
368 CodeSection* cs = __ code_section();
|
|
|
369 address pc = (address)_pc_start;
|
|
|
370 RelocIterator iter(cs, pc, pc + 1);
|
|
|
371 relocInfo::change_reloc_info_for_address(&iter, (address) pc, relocInfo::oop_type, relocInfo::none);
|
|
|
372
|
|
|
373 pc = (address)(_pc_start + NativeMovConstReg::add_offset);
|
|
|
374 RelocIterator iter2(cs, pc, pc+1);
|
|
|
375 relocInfo::change_reloc_info_for_address(&iter2, (address) pc, relocInfo::oop_type, relocInfo::none);
|
|
|
376 }
|
|
|
377
|
|
|
378 }
|
|
|
379
|
|
1295
|
380
|
|
|
381 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
|
|
|
382 __ bind(_entry);
|
|
|
383 __ call(SharedRuntime::deopt_blob()->unpack_with_reexecution());
|
|
|
384 __ delayed()->nop();
|
|
|
385 ce->add_call_info_here(_info);
|
|
|
386 debug_only(__ should_not_reach_here());
|
|
|
387 }
|
|
|
388
|
|
|
389
|
|
0
|
390 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
|
|
|
391 //---------------slow case: call to native-----------------
|
|
|
392 __ bind(_entry);
|
|
|
393 __ mov(src()->as_register(), O0);
|
|
|
394 __ mov(src_pos()->as_register(), O1);
|
|
|
395 __ mov(dst()->as_register(), O2);
|
|
|
396 __ mov(dst_pos()->as_register(), O3);
|
|
|
397 __ mov(length()->as_register(), O4);
|
|
|
398
|
|
|
399 ce->emit_static_call_stub();
|
|
|
400
|
|
|
401 __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type);
|
|
|
402 __ delayed()->nop();
|
|
|
403 ce->add_call_info_here(info());
|
|
|
404 ce->verify_oop_map(info());
|
|
|
405
|
|
|
406 #ifndef PRODUCT
|
|
|
407 __ set((intptr_t)&Runtime1::_arraycopy_slowcase_cnt, O0);
|
|
|
408 __ ld(O0, 0, O1);
|
|
|
409 __ inc(O1);
|
|
|
410 __ st(O1, 0, O0);
|
|
|
411 #endif
|
|
|
412
|
|
|
413 __ br(Assembler::always, false, Assembler::pt, _continuation);
|
|
|
414 __ delayed()->nop();
|
|
|
415 }
|
|
|
416
|
|
|
417
|
|
342
|
418 ///////////////////////////////////////////////////////////////////////////////////
|
|
|
419 #ifndef SERIALGC
|
|
|
420
|
|
|
421 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {
|
|
|
422 __ bind(_entry);
|
|
|
423
|
|
|
424 assert(pre_val()->is_register(), "Precondition.");
|
|
|
425
|
|
|
426 Register pre_val_reg = pre_val()->as_register();
|
|
|
427
|
|
|
428 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false);
|
|
|
429 __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
|
|
|
430 pre_val_reg, _continuation);
|
|
|
431 __ delayed()->nop();
|
|
|
432
|
|
|
433 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_pre_barrier_slow_id));
|
|
|
434 __ delayed()->mov(pre_val_reg, G4);
|
|
|
435 __ br(Assembler::always, false, Assembler::pt, _continuation);
|
|
|
436 __ delayed()->nop();
|
|
|
437
|
|
|
438 }
|
|
|
439
|
|
|
440 jbyte* G1PostBarrierStub::_byte_map_base = NULL;
|
|
|
441
|
|
|
442 jbyte* G1PostBarrierStub::byte_map_base_slow() {
|
|
|
443 BarrierSet* bs = Universe::heap()->barrier_set();
|
|
|
444 assert(bs->is_a(BarrierSet::G1SATBCTLogging),
|
|
|
445 "Must be if we're using this.");
|
|
|
446 return ((G1SATBCardTableModRefBS*)bs)->byte_map_base;
|
|
|
447 }
|
|
|
448
|
|
|
449 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
|
|
|
450 __ bind(_entry);
|
|
|
451
|
|
|
452 assert(addr()->is_register(), "Precondition.");
|
|
|
453 assert(new_val()->is_register(), "Precondition.");
|
|
|
454 Register addr_reg = addr()->as_pointer_register();
|
|
|
455 Register new_val_reg = new_val()->as_register();
|
|
|
456 __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
|
|
|
457 new_val_reg, _continuation);
|
|
|
458 __ delayed()->nop();
|
|
|
459
|
|
|
460 __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_post_barrier_slow_id));
|
|
|
461 __ delayed()->mov(addr_reg, G4);
|
|
|
462 __ br(Assembler::always, false, Assembler::pt, _continuation);
|
|
|
463 __ delayed()->nop();
|
|
|
464 }
|
|
|
465
|
|
|
466 #endif // SERIALGC
|
|
|
467 ///////////////////////////////////////////////////////////////////////////////////
|
|
|
468
|
|
0
|
469 #undef __
|
