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src/hotspot/cpu/x86/c1_CodeStubs_x86.cpp

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 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 "c1/c1_CodeStubs.hpp"
 26 #include "c1/c1_FrameMap.hpp"
 27 #include "c1/c1_LIRAssembler.hpp"
 28 #include "c1/c1_MacroAssembler.hpp"
 29 #include "c1/c1_Runtime1.hpp"
 30 #include "classfile/javaClasses.hpp"
 31 #include "nativeInst_x86.hpp"

 32 #include "runtime/sharedRuntime.hpp"
 33 #include "utilities/align.hpp"
 34 #include "utilities/macros.hpp"
 35 #include "vmreg_x86.inline.hpp"
 36 
 37 
 38 #define __ ce->masm()->
 39 
 40 #ifndef _LP64
 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));

152 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
153   __ bind(_entry);
154   address a = Runtime1::entry_for(C1StubId::predicate_failed_trap_id);
155   __ call(RuntimeAddress(a));
156   ce->add_call_info_here(_info);
157   ce->verify_oop_map(_info);
158   debug_only(__ should_not_reach_here());
159 }
160 
161 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
162   if (_offset != -1) {
163     ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
164   }
165   __ bind(_entry);
166   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::throw_div0_exception_id)));
167   ce->add_call_info_here(_info);
168   debug_only(__ should_not_reach_here());
169 }
170 
171 









































































172 // Implementation of NewInstanceStub
173 
174 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, C1StubId stub_id) {
175   _result = result;
176   _klass = klass;
177   _klass_reg = klass_reg;
178   _info = new CodeEmitInfo(info);
179   assert(stub_id == C1StubId::new_instance_id                 ||
180          stub_id == C1StubId::fast_new_instance_id            ||
181          stub_id == C1StubId::fast_new_instance_init_check_id,
182          "need new_instance id");
183   _stub_id   = stub_id;
184 }
185 
186 
187 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
188   assert(__ rsp_offset() == 0, "frame size should be fixed");
189   __ bind(_entry);
190   __ movptr(rdx, _klass_reg->as_register());
191   __ call(RuntimeAddress(Runtime1::entry_for(_stub_id)));

204   _result = result;
205   _info = new CodeEmitInfo(info);
206 }
207 
208 
209 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
210   assert(__ rsp_offset() == 0, "frame size should be fixed");
211   __ bind(_entry);
212   assert(_length->as_register() == rbx, "length must in rbx,");
213   assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
214   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::new_type_array_id)));
215   ce->add_call_info_here(_info);
216   ce->verify_oop_map(_info);
217   assert(_result->as_register() == rax, "result must in rax,");
218   __ jmp(_continuation);
219 }
220 
221 
222 // Implementation of NewObjectArrayStub
223 
224 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {

225   _klass_reg = klass_reg;
226   _result = result;
227   _length = length;
228   _info = new CodeEmitInfo(info);

229 }
230 
231 
232 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
233   assert(__ rsp_offset() == 0, "frame size should be fixed");
234   __ bind(_entry);
235   assert(_length->as_register() == rbx, "length must in rbx,");
236   assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
237   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::new_object_array_id)));




238   ce->add_call_info_here(_info);
239   ce->verify_oop_map(_info);
240   assert(_result->as_register() == rax, "result must in rax,");
241   __ jmp(_continuation);
242 }
243 
244 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
245   assert(__ rsp_offset() == 0, "frame size should be fixed");
246   __ bind(_entry);









247   ce->store_parameter(_obj_reg->as_register(),  1);
248   ce->store_parameter(_lock_reg->as_register(), 0);
249   C1StubId enter_id;
250   if (ce->compilation()->has_fpu_code()) {
251     enter_id = C1StubId::monitorenter_id;
252   } else {
253     enter_id = C1StubId::monitorenter_nofpu_id;
254   }
255   __ call(RuntimeAddress(Runtime1::entry_for(enter_id)));
256   ce->add_call_info_here(_info);
257   ce->verify_oop_map(_info);
258   __ jmp(_continuation);
259 }
260 
261 
262 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
263   __ bind(_entry);
264   if (_compute_lock) {
265     // lock_reg was destroyed by fast unlocking attempt => recompute it
266     ce->monitor_address(_monitor_ix, _lock_reg);

 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 "c1/c1_CodeStubs.hpp"
 26 #include "c1/c1_FrameMap.hpp"
 27 #include "c1/c1_LIRAssembler.hpp"
 28 #include "c1/c1_MacroAssembler.hpp"
 29 #include "c1/c1_Runtime1.hpp"
 30 #include "classfile/javaClasses.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 #ifndef _LP64
 42 float ConversionStub::float_zero = 0.0;
 43 double ConversionStub::double_zero = 0.0;
 44 
 45 void ConversionStub::emit_code(LIR_Assembler* ce) {
 46   __ bind(_entry);
 47   assert(bytecode() == Bytecodes::_f2i || bytecode() == Bytecodes::_d2i, "other conversions do not require stub");
 48 
 49 
 50   if (input()->is_single_xmm()) {
 51     __ comiss(input()->as_xmm_float_reg(),
 52               ExternalAddress((address)&float_zero));

153 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
154   __ bind(_entry);
155   address a = Runtime1::entry_for(C1StubId::predicate_failed_trap_id);
156   __ call(RuntimeAddress(a));
157   ce->add_call_info_here(_info);
158   ce->verify_oop_map(_info);
159   debug_only(__ should_not_reach_here());
160 }
161 
162 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
163   if (_offset != -1) {
164     ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
165   }
166   __ bind(_entry);
167   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::throw_div0_exception_id)));
168   ce->add_call_info_here(_info);
169   debug_only(__ should_not_reach_here());
170 }
171 
172 
173 // Implementation of LoadFlattenedArrayStub
174 
175 LoadFlattenedArrayStub::LoadFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) {
176   _array = array;
177   _index = index;
178   _result = result;
179   // Tell the register allocator that the runtime call will scratch rax.
180   _scratch_reg = FrameMap::rax_oop_opr;
181   _info = new CodeEmitInfo(info);
182 }
183 
184 void LoadFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
185   assert(__ rsp_offset() == 0, "frame size should be fixed");
186   __ bind(_entry);
187   ce->store_parameter(_array->as_register(), 1);
188   ce->store_parameter(_index->as_register(), 0);
189   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::load_flat_array_id)));
190   ce->add_call_info_here(_info);
191   ce->verify_oop_map(_info);
192   if (_result->as_register() != rax) {
193     __ movptr(_result->as_register(), rax);
194   }
195   __ jmp(_continuation);
196 }
197 
198 
199 // Implementation of StoreFlattenedArrayStub
200 
201 StoreFlattenedArrayStub::StoreFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr value, CodeEmitInfo* info) {
202   _array = array;
203   _index = index;
204   _value = value;
205   // Tell the register allocator that the runtime call will scratch rax.
206   _scratch_reg = FrameMap::rax_oop_opr;
207   _info = new CodeEmitInfo(info);
208 }
209 
210 
211 void StoreFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
212   assert(__ rsp_offset() == 0, "frame size should be fixed");
213   __ bind(_entry);
214   ce->store_parameter(_array->as_register(), 2);
215   ce->store_parameter(_index->as_register(), 1);
216   ce->store_parameter(_value->as_register(), 0);
217   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::store_flat_array_id)));
218   ce->add_call_info_here(_info);
219   ce->verify_oop_map(_info);
220   __ jmp(_continuation);
221 }
222 
223 
224 // Implementation of SubstitutabilityCheckStub
225 
226 SubstitutabilityCheckStub::SubstitutabilityCheckStub(LIR_Opr left, LIR_Opr right, CodeEmitInfo* info) {
227   _left = left;
228   _right = right;
229   // Tell the register allocator that the runtime call will scratch rax.
230   _scratch_reg = FrameMap::rax_oop_opr;
231   _info = new CodeEmitInfo(info);
232 }
233 
234 void SubstitutabilityCheckStub::emit_code(LIR_Assembler* ce) {
235   assert(__ rsp_offset() == 0, "frame size should be fixed");
236   __ bind(_entry);
237   ce->store_parameter(_left->as_register(), 1);
238   ce->store_parameter(_right->as_register(), 0);
239   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::substitutability_check_id)));
240   ce->add_call_info_here(_info);
241   ce->verify_oop_map(_info);
242   __ jmp(_continuation);
243 }
244 
245 
246 // Implementation of NewInstanceStub
247 
248 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, C1StubId stub_id) {
249   _result = result;
250   _klass = klass;
251   _klass_reg = klass_reg;
252   _info = new CodeEmitInfo(info);
253   assert(stub_id == C1StubId::new_instance_id                 ||
254          stub_id == C1StubId::fast_new_instance_id            ||
255          stub_id == C1StubId::fast_new_instance_init_check_id,
256          "need new_instance id");
257   _stub_id   = stub_id;
258 }
259 
260 
261 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
262   assert(__ rsp_offset() == 0, "frame size should be fixed");
263   __ bind(_entry);
264   __ movptr(rdx, _klass_reg->as_register());
265   __ call(RuntimeAddress(Runtime1::entry_for(_stub_id)));

278   _result = result;
279   _info = new CodeEmitInfo(info);
280 }
281 
282 
283 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
284   assert(__ rsp_offset() == 0, "frame size should be fixed");
285   __ bind(_entry);
286   assert(_length->as_register() == rbx, "length must in rbx,");
287   assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
288   __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::new_type_array_id)));
289   ce->add_call_info_here(_info);
290   ce->verify_oop_map(_info);
291   assert(_result->as_register() == rax, "result must in rax,");
292   __ jmp(_continuation);
293 }
294 
295 
296 // Implementation of NewObjectArrayStub
297 
298 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result,
299                                        CodeEmitInfo* info, bool is_null_free) {
300   _klass_reg = klass_reg;
301   _result = result;
302   _length = length;
303   _info = new CodeEmitInfo(info);
304   _is_null_free = is_null_free;
305 }
306 
307 
308 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
309   assert(__ rsp_offset() == 0, "frame size should be fixed");
310   __ bind(_entry);
311   assert(_length->as_register() == rbx, "length must in rbx,");
312   assert(_klass_reg->as_register() == rdx, "klass_reg must in rdx");
313   if (_is_null_free) {
314     __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::new_null_free_array_id)));
315   } else {
316     __ call(RuntimeAddress(Runtime1::entry_for(C1StubId::new_object_array_id)));
317   }
318   ce->add_call_info_here(_info);
319   ce->verify_oop_map(_info);
320   assert(_result->as_register() == rax, "result must in rax,");
321   __ jmp(_continuation);
322 }
323 
324 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
325   assert(__ rsp_offset() == 0, "frame size should be fixed");
326   __ bind(_entry);
327   if (_throw_ie_stub != nullptr) {
328     // When we come here, _obj_reg has already been checked to be non-null.
329     const int is_value_mask = markWord::inline_type_pattern;
330     Register mark = _scratch_reg->as_register();
331     __ movptr(mark, Address(_obj_reg->as_register(), oopDesc::mark_offset_in_bytes()));
332     __ andptr(mark, is_value_mask);
333     __ cmpl(mark, is_value_mask);
334     __ jcc(Assembler::equal, *_throw_ie_stub->entry());
335   }
336   ce->store_parameter(_obj_reg->as_register(),  1);
337   ce->store_parameter(_lock_reg->as_register(), 0);
338   C1StubId enter_id;
339   if (ce->compilation()->has_fpu_code()) {
340     enter_id = C1StubId::monitorenter_id;
341   } else {
342     enter_id = C1StubId::monitorenter_nofpu_id;
343   }
344   __ call(RuntimeAddress(Runtime1::entry_for(enter_id)));
345   ce->add_call_info_here(_info);
346   ce->verify_oop_map(_info);
347   __ jmp(_continuation);
348 }
349 
350 
351 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
352   __ bind(_entry);
353   if (_compute_lock) {
354     // lock_reg was destroyed by fast unlocking attempt => recompute it
355     ce->monitor_address(_monitor_ix, _lock_reg);
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