G1BarrierSet_merge

0 /*                                                                                                                                   
1  * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.                                                      
2  * Copyright (c) 2014, Red Hat Inc. 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.                                                                     
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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_aarch64.hpp"                                                                                                    
32 #include "runtime/sharedRuntime.hpp"                                                                                                 
33 #include "vmreg_aarch64.inline.hpp"                                                                                                  
34 #if INCLUDE_ALL_GCS                                                                                                                  
35 #include "gc/g1/g1SATBCardTableModRefBS.hpp"                                                                                         
36 #endif                                                                                                                               
37 
38 
39 #define __ ce->masm()->                                                                                                              
40 
41 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {                                                                             
42   __ bind(_entry);                                                                                                                   
43   Metadata *m = _method->as_constant_ptr()->as_metadata();                                                                           
44   __ mov_metadata(rscratch1, m);                                                                                                     
45   ce->store_parameter(rscratch1, 1);                                                                                                 
46   ce->store_parameter(_bci, 0);                                                                                                      
47   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));                                                   
48   ce->add_call_info_here(_info);                                                                                                     
49   ce->verify_oop_map(_info);                                                                                                         
50   __ b(_continuation);                                                                                                               
51 }                                                                                                                                    
52 
53 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,                                                                    
54                                bool throw_index_out_of_bounds_exception)                                                             
55   : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)                                                        
56   , _index(index)                                                                                                                    
57 {                                                                                                                                    
58   assert(info != NULL, "must have info");                                                                                            
59   _info = new CodeEmitInfo(info);                                                                                                    
60 }                                                                                                                                    
61 
62 void RangeCheckStub::emit_code(LIR_Assembler* ce) {                                                                                  
63   __ bind(_entry);                                                                                                                   
64   if (_info->deoptimize_on_exception()) {                                                                                            
65     address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);                                                             
66     __ far_call(RuntimeAddress(a));                                                                                                  
67     ce->add_call_info_here(_info);                                                                                                   
68     ce->verify_oop_map(_info);                                                                                                       
69     debug_only(__ should_not_reach_here());                                                                                          
70     return;                                                                                                                          
71   }                                                                                                                                  
72 
73   if (_index->is_cpu_register()) {                                                                                                   
74     __ mov(rscratch1, _index->as_register());                                                                                        
75   } else {                                                                                                                           
76     __ mov(rscratch1, _index->as_jint());                                                                                            
77   }                                                                                                                                  
78   Runtime1::StubID stub_id;                                                                                                          
79   if (_throw_index_out_of_bounds_exception) {                                                                                        
80     stub_id = Runtime1::throw_index_exception_id;                                                                                    
81   } else {                                                                                                                           
82     stub_id = Runtime1::throw_range_check_failed_id;                                                                                 
83   }                                                                                                                                  
84   __ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL, rscratch2);                                                        
85   ce->add_call_info_here(_info);                                                                                                     
86   ce->verify_oop_map(_info);                                                                                                         
87   debug_only(__ should_not_reach_here());                                                                                            
88 }                                                                                                                                    
89 
90 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {                                                                       
91   _info = new CodeEmitInfo(info);                                                                                                    
92 }                                                                                                                                    
93 
94 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {                                                                             
95   __ bind(_entry);                                                                                                                   
96   address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);                                                               
97   __ far_call(RuntimeAddress(a));                                                                                                    
98   ce->add_call_info_here(_info);                                                                                                     
99   ce->verify_oop_map(_info);                                                                                                         
100   debug_only(__ should_not_reach_here());                                                                                            
101 }                                                                                                                                    
102 
103 void DivByZeroStub::emit_code(LIR_Assembler* ce) {                                                                                   
104   if (_offset != -1) {                                                                                                               
105     ce->compilation()->implicit_exception_table()->append(_offset, __ offset());                                                     
106   }                                                                                                                                  
107   __ bind(_entry);                                                                                                                   
108   __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type));                        
109   ce->add_call_info_here(_info);                                                                                                     
110   ce->verify_oop_map(_info);                                                                                                         
111 #ifdef ASSERT                                                                                                                        
112   __ should_not_reach_here();                                                                                                        
113 #endif                                                                                                                               
114 }                                                                                                                                    
115 
116 
117 
118 // Implementation of NewInstanceStub                                                                                                 
119 
120 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub
121   _result = result;                                                                                                                  
122   _klass = klass;                                                                                                                    
123   _klass_reg = klass_reg;                                                                                                            
124   _info = new CodeEmitInfo(info);                                                                                                    
125   assert(stub_id == Runtime1::new_instance_id                 ||                                                                     
126          stub_id == Runtime1::fast_new_instance_id            ||                                                                     
127          stub_id == Runtime1::fast_new_instance_init_check_id,                                                                       
128          "need new_instance id");                                                                                                    
129   _stub_id   = stub_id;                                                                                                              
130 }                                                                                                                                    
131 
132 
133 
134 void NewInstanceStub::emit_code(LIR_Assembler* ce) {                                                                                 
135   assert(__ rsp_offset() == 0, "frame size should be fixed");                                                                        
136   __ bind(_entry);                                                                                                                   
137   __ mov(r3, _klass_reg->as_register());                                                                                             
138   __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));                                                                        
139   ce->add_call_info_here(_info);                                                                                                     
140   ce->verify_oop_map(_info);                                                                                                         
141   assert(_result->as_register() == r0, "result must in r0,");                                                                        
142   __ b(_continuation);                                                                                                               
143 }                                                                                                                                    
144 
145 
146 // Implementation of NewTypeArrayStub                                                                                                
147 
148 // Implementation of NewTypeArrayStub                                                                                                
149 
150 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {                          
151   _klass_reg = klass_reg;                                                                                                            
152   _length = length;                                                                                                                  
153   _result = result;                                                                                                                  
154   _info = new CodeEmitInfo(info);                                                                                                    
155 }                                                                                                                                    
156 
157 
158 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {                                                                                
159   assert(__ rsp_offset() == 0, "frame size should be fixed");                                                                        
160   __ bind(_entry);                                                                                                                   
161   assert(_length->as_register() == r19, "length must in r19,");                                                                      
162   assert(_klass_reg->as_register() == r3, "klass_reg must in r3");                                                                   
163   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));                                                     
164   ce->add_call_info_here(_info);                                                                                                     
165   ce->verify_oop_map(_info);                                                                                                         
166   assert(_result->as_register() == r0, "result must in r0");                                                                         
167   __ b(_continuation);                                                                                                               
168 }                                                                                                                                    
169 
170 
171 // Implementation of NewObjectArrayStub                                                                                              
172 
173 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {                      
174   _klass_reg = klass_reg;                                                                                                            
175   _result = result;                                                                                                                  
176   _length = length;                                                                                                                  
177   _info = new CodeEmitInfo(info);                                                                                                    
178 }                                                                                                                                    
179 
180 
181 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {                                                                              
182   assert(__ rsp_offset() == 0, "frame size should be fixed");                                                                        
183   __ bind(_entry);                                                                                                                   
184   assert(_length->as_register() == r19, "length must in r19,");                                                                      
185   assert(_klass_reg->as_register() == r3, "klass_reg must in r3");                                                                   
186   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));                                                   
187   ce->add_call_info_here(_info);                                                                                                     
188   ce->verify_oop_map(_info);                                                                                                         
189   assert(_result->as_register() == r0, "result must in r0");                                                                         
190   __ b(_continuation);                                                                                                               
191 }                                                                                                                                    
192 // Implementation of MonitorAccessStubs                                                                                              
193 
194 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)                                            
195 : MonitorAccessStub(obj_reg, lock_reg)                                                                                               
196 {                                                                                                                                    
197   _info = new CodeEmitInfo(info);                                                                                                    
198 }                                                                                                                                    
199 
200 
201 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {                                                                                
202   assert(__ rsp_offset() == 0, "frame size should be fixed");                                                                        
203   __ bind(_entry);                                                                                                                   
204   ce->store_parameter(_obj_reg->as_register(),  1);                                                                                  
205   ce->store_parameter(_lock_reg->as_register(), 0);                                                                                  
206   Runtime1::StubID enter_id;                                                                                                         
207   if (ce->compilation()->has_fpu_code()) {                                                                                           
208     enter_id = Runtime1::monitorenter_id;                                                                                            
209   } else {                                                                                                                           
210     enter_id = Runtime1::monitorenter_nofpu_id;                                                                                      
211   }                                                                                                                                  
212   __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));                                                                        
213   ce->add_call_info_here(_info);                                                                                                     
214   ce->verify_oop_map(_info);                                                                                                         
215   __ b(_continuation);                                                                                                               
216 }                                                                                                                                    
217 
218 
219 void MonitorExitStub::emit_code(LIR_Assembler* ce) {                                                                                 
220   __ bind(_entry);                                                                                                                   
221   if (_compute_lock) {                                                                                                               
222     // lock_reg was destroyed by fast unlocking attempt => recompute it                                                              
223     ce->monitor_address(_monitor_ix, _lock_reg);                                                                                     
224   }                                                                                                                                  
225   ce->store_parameter(_lock_reg->as_register(), 0);                                                                                  
226   // note: non-blocking leaf routine => no call info needed                                                                          
227   Runtime1::StubID exit_id;                                                                                                          
228   if (ce->compilation()->has_fpu_code()) {                                                                                           
229     exit_id = Runtime1::monitorexit_id;                                                                                              
230   } else {                                                                                                                           
231     exit_id = Runtime1::monitorexit_nofpu_id;                                                                                        
232   }                                                                                                                                  
233   __ adr(lr, _continuation);                                                                                                         
234   __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));                                                                         
235 }                                                                                                                                    
236 
237 
238 // Implementation of patching:                                                                                                       
239 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)                                  
240 // - Replace original code with a call to the stub                                                                                   
241 // At Runtime:                                                                                                                       
242 // - call to stub, jump to runtime                                                                                                   
243 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)                                    
244 // - in runtime: after initializing class, restore original code, reexecute instruction                                              
245 
246 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;                                                         
247 
248 void PatchingStub::align_patch_site(MacroAssembler* masm) {                                                                          
249 }                                                                                                                                    
250 
251 void PatchingStub::emit_code(LIR_Assembler* ce) {                                                                                    
252   assert(false, "AArch64 should not use C1 runtime patching");                                                                       
253 }                                                                                                                                    
254 
255 
256 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {                                                                                  
257   __ bind(_entry);                                                                                                                   
258   ce->store_parameter(_trap_request, 0);                                                                                             
259   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));                                                         
260   ce->add_call_info_here(_info);                                                                                                     
261   DEBUG_ONLY(__ should_not_reach_here());                                                                                            
262 }                                                                                                                                    
263 
264 
265 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {                                                                           
266   address a;                                                                                                                         
267   if (_info->deoptimize_on_exception()) {                                                                                            
268     // Deoptimize, do not throw the exception, because it is probably wrong to do it here.                                           
269     a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);                                                                     
270   } else {                                                                                                                           
271     a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);                                                              
272   }                                                                                                                                  
273 
274   ce->compilation()->implicit_exception_table()->append(_offset, __ offset());                                                       
275   __ bind(_entry);                                                                                                                   
276   __ far_call(RuntimeAddress(a));                                                                                                    
277   ce->add_call_info_here(_info);                                                                                                     
278   ce->verify_oop_map(_info);                                                                                                         
279   debug_only(__ should_not_reach_here());                                                                                            
280 }                                                                                                                                    
281 
282 
283 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {                                                                             
284   assert(__ rsp_offset() == 0, "frame size should be fixed");                                                                        
285 
286   __ bind(_entry);                                                                                                                   
287   // pass the object in a scratch register because all other registers                                                               
288   // must be preserved                                                                                                               
289   if (_obj->is_cpu_register()) {                                                                                                     
290     __ mov(rscratch1, _obj->as_register());                                                                                          
291   }                                                                                                                                  
292   __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2);                                                          
293   ce->add_call_info_here(_info);                                                                                                     
294   debug_only(__ should_not_reach_here());                                                                                            
295 }                                                                                                                                    
296 
297 
298 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {                                                                                   
299   //---------------slow case: call to native-----------------                                                                        
300   __ bind(_entry);                                                                                                                   
301   // Figure out where the args should go                                                                                             
302   // This should really convert the IntrinsicID to the Method* and signature                                                         
303   // but I don't know how to do that.                                                                                                
304   //                                                                                                                                 
305   VMRegPair args[5];                                                                                                                 
306   BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};                                                               
307   SharedRuntime::java_calling_convention(signature, args, 5, true);                                                                  
308 
309   // push parameters                                                                                                                 
310   // (src, src_pos, dest, destPos, length)                                                                                           
311   Register r[5];                                                                                                                     
312   r[0] = src()->as_register();                                                                                                       
313   r[1] = src_pos()->as_register();                                                                                                   
314   r[2] = dst()->as_register();                                                                                                       
315   r[3] = dst_pos()->as_register();                                                                                                   
316   r[4] = length()->as_register();                                                                                                    
317 
318   // next registers will get stored on the stack                                                                                     
319   for (int i = 0; i < 5 ; i++ ) {                                                                                                    
320     VMReg r_1 = args[i].first();                                                                                                     
321     if (r_1->is_stack()) {                                                                                                           
322       int st_off = r_1->reg2stack() * wordSize;                                                                                      
323       __ str (r[i], Address(sp, st_off));                                                                                            
324     } else {                                                                                                                         
325       assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");                                                     
326     }                                                                                                                                
327   }                                                                                                                                  
328 
329   ce->align_call(lir_static_call);                                                                                                   
330 
331   ce->emit_static_call_stub();                                                                                                       
332   if (ce->compilation()->bailed_out()) {                                                                                             
333     return; // CodeCache is full                                                                                                     
334   }                                                                                                                                  
335   Address resolve(SharedRuntime::get_resolve_static_call_stub(),                                                                     
336                   relocInfo::static_call_type);                                                                                      
337   address call = __ trampoline_call(resolve);                                                                                        
338   if (call == NULL) {                                                                                                                
339     ce->bailout("trampoline stub overflow");                                                                                         
340     return;                                                                                                                          
341   }                                                                                                                                  
342   ce->add_call_info_here(info());                                                                                                    
343 
344 #ifndef PRODUCT                                                                                                                      
345   __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));                                                   
346   __ incrementw(Address(rscratch2));                                                                                                 
347 #endif                                                                                                                               
348 
349   __ b(_continuation);                                                                                                               
350 }                                                                                                                                    
351 
352 
353 /////////////////////////////////////////////////////////////////////////////                                                        
354 #if INCLUDE_ALL_GCS                                                                                                                  
355 
356 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {                                                                                
357   // At this point we know that marking is in progress.                                                                              
358   // If do_load() is true then we have to emit the                                                                                   
359   // load of the previous value; otherwise it has already                                                                            
360   // been loaded into _pre_val.                                                                                                      
361 
362   __ bind(_entry);                                                                                                                   
363   assert(pre_val()->is_register(), "Precondition.");                                                                                 
364 
365   Register pre_val_reg = pre_val()->as_register();                                                                                   
366 
367   if (do_load()) {                                                                                                                   
368     ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/);                             
369   }                                                                                                                                  
370   __ cbz(pre_val_reg, _continuation);                                                                                                
371   ce->store_parameter(pre_val()->as_register(), 0);                                                                                  
372   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_pre_barrier_slow_id)));                                                
373   __ b(_continuation);                                                                                                               
374 }                                                                                                                                    
375 
376 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {                                                                               
377   __ bind(_entry);                                                                                                                   
378   assert(addr()->is_register(), "Precondition.");                                                                                    
379   assert(new_val()->is_register(), "Precondition.");                                                                                 
380   Register new_val_reg = new_val()->as_register();                                                                                   
381   __ cbz(new_val_reg, _continuation);                                                                                                
382   ce->store_parameter(addr()->as_pointer_register(), 0);                                                                             
383   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id)));                                               
384   __ b(_continuation);                                                                                                               
385 }                                                                                                                                    
386 
387 #endif // INCLUDE_ALL_GCS                                                                                                            
388 /////////////////////////////////////////////////////////////////////////////                                                        
389 
390 #undef __                                                                                                                            
--- EOF ---