G1BarrierSet_merge

0 /*
1  * Copyright (c) 1999, 2018, 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.
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.
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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/g1BarrierSet.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 ---