1 /*
2 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, Red Hat Inc. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "c1/c1_CodeStubs.hpp"
29 #include "c1/c1_FrameMap.hpp"
30 #include "c1/c1_LIRAssembler.hpp"
31 #include "c1/c1_MacroAssembler.hpp"
32 #include "c1/c1_Runtime1.hpp"
33 #include "nativeInst_aarch64.hpp"
34 #include "runtime/sharedRuntime.hpp"
35 #include "vmreg_aarch64.inline.hpp"
36
37
38 #define __ ce->masm()->
39
40 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
41 __ bind(_entry);
42 Metadata *m = _method->as_constant_ptr()->as_metadata();
43 __ mov_metadata(rscratch1, m);
44 ce->store_parameter(rscratch1, 1);
45 ce->store_parameter(_bci, 0);
46 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));
47 ce->add_call_info_here(_info);
48 ce->verify_oop_map(_info);
49 __ b(_continuation);
50 }
51
52 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, LIR_Opr array)
53 : _index(index), _array(array), _throw_index_out_of_bounds_exception(false) {
54 assert(info != NULL, "must have info");
55 _info = new CodeEmitInfo(info);
56 }
57
58 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index)
59 : _index(index), _array(NULL), _throw_index_out_of_bounds_exception(true) {
60 assert(info != NULL, "must have info");
61 _info = new CodeEmitInfo(info);
62 }
63
64 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
65 __ bind(_entry);
66 if (_info->deoptimize_on_exception()) {
67 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
68 __ far_call(RuntimeAddress(a));
69 ce->add_call_info_here(_info);
70 ce->verify_oop_map(_info);
71 debug_only(__ should_not_reach_here());
72 return;
73 }
74
75 if (_index->is_cpu_register()) {
76 __ mov(rscratch1, _index->as_register());
77 } else {
78 __ mov(rscratch1, _index->as_jint());
79 }
80 Runtime1::StubID stub_id;
81 if (_throw_index_out_of_bounds_exception) {
82 stub_id = Runtime1::throw_index_exception_id;
83 } else {
84 assert(_array != NULL, "sanity");
85 __ mov(rscratch2, _array->as_pointer_register());
86 stub_id = Runtime1::throw_range_check_failed_id;
87 }
88 __ lea(lr, RuntimeAddress(Runtime1::entry_for(stub_id)));
89 __ blr(lr);
90 ce->add_call_info_here(_info);
91 ce->verify_oop_map(_info);
92 debug_only(__ should_not_reach_here());
93 }
94
95 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
96 _info = new CodeEmitInfo(info);
97 }
98
99 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
100 __ bind(_entry);
101 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
102 __ far_call(RuntimeAddress(a));
103 ce->add_call_info_here(_info);
104 ce->verify_oop_map(_info);
105 debug_only(__ should_not_reach_here());
106 }
107
108 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
109 if (_offset != -1) {
110 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
111 }
112 __ bind(_entry);
113 __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type));
114 ce->add_call_info_here(_info);
115 ce->verify_oop_map(_info);
116 #ifdef ASSERT
117 __ should_not_reach_here();
118 #endif
119 }
120
121 // Implementation of LoadFlattenedArrayStub
122
123 LoadFlattenedArrayStub::LoadFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr result, CodeEmitInfo* info) {
124 _array = array;
125 _index = index;
126 _result = result;
127 _scratch_reg = FrameMap::r0_oop_opr;
128 _info = new CodeEmitInfo(info);
129 }
130
131 void LoadFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
132 assert(__ rsp_offset() == 0, "frame size should be fixed");
133 __ bind(_entry);
134 ce->store_parameter(_array->as_register(), 1);
135 ce->store_parameter(_index->as_register(), 0);
136 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::load_flattened_array_id)));
137 ce->add_call_info_here(_info);
138 ce->verify_oop_map(_info);
139 if (_result->as_register() != r0) {
140 __ mov(_result->as_register(), r0);
141 }
142 __ b(_continuation);
143 }
144
145
146 // Implementation of StoreFlattenedArrayStub
147
148 StoreFlattenedArrayStub::StoreFlattenedArrayStub(LIR_Opr array, LIR_Opr index, LIR_Opr value, CodeEmitInfo* info) {
149 _array = array;
150 _index = index;
151 _value = value;
152 _scratch_reg = FrameMap::r0_oop_opr;
153 _info = new CodeEmitInfo(info);
154 }
155
156
157 void StoreFlattenedArrayStub::emit_code(LIR_Assembler* ce) {
158 assert(__ rsp_offset() == 0, "frame size should be fixed");
159 __ bind(_entry);
160 ce->store_parameter(_array->as_register(), 2);
161 ce->store_parameter(_index->as_register(), 1);
162 ce->store_parameter(_value->as_register(), 0);
163 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::store_flattened_array_id)));
164 ce->add_call_info_here(_info);
165 ce->verify_oop_map(_info);
166 __ b(_continuation);
167 }
168
169 // Implementation of SubstitutabilityCheckStub
170 SubstitutabilityCheckStub::SubstitutabilityCheckStub(LIR_Opr left, LIR_Opr right, CodeEmitInfo* info) {
171 _left = left;
172 _right = right;
173 _scratch_reg = FrameMap::r0_oop_opr;
174 _info = new CodeEmitInfo(info);
175 }
176
177 void SubstitutabilityCheckStub::emit_code(LIR_Assembler* ce) {
178 assert(__ rsp_offset() == 0, "frame size should be fixed");
179 __ bind(_entry);
180 ce->store_parameter(_left->as_register(), 1);
181 ce->store_parameter(_right->as_register(), 0);
182 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::substitutability_check_id)));
183 ce->add_call_info_here(_info);
184 ce->verify_oop_map(_info);
185 __ b(_continuation);
186 }
187
188
189 // Implementation of NewInstanceStub
190
191 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
192 _result = result;
193 _klass = klass;
194 _klass_reg = klass_reg;
195 _info = new CodeEmitInfo(info);
196 assert(stub_id == Runtime1::new_instance_id ||
197 stub_id == Runtime1::fast_new_instance_id ||
198 stub_id == Runtime1::fast_new_instance_init_check_id,
199 "need new_instance id");
200 _stub_id = stub_id;
201 }
202
203 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
204 assert(__ rsp_offset() == 0, "frame size should be fixed");
205 __ bind(_entry);
206 __ mov(r3, _klass_reg->as_register());
207 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
208 ce->add_call_info_here(_info);
209 ce->verify_oop_map(_info);
210 assert(_result->as_register() == r0, "result must in r0,");
211 __ b(_continuation);
212 }
213
214
215 // Implementation of NewTypeArrayStub
216
217 // Implementation of NewTypeArrayStub
218
219 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
220 _klass_reg = klass_reg;
221 _length = length;
222 _result = result;
223 _info = new CodeEmitInfo(info);
224 }
225
226
227 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
228 assert(__ rsp_offset() == 0, "frame size should be fixed");
229 __ bind(_entry);
230 assert(_length->as_register() == r19, "length must in r19,");
231 assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
232 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
233 ce->add_call_info_here(_info);
234 ce->verify_oop_map(_info);
235 assert(_result->as_register() == r0, "result must in r0");
236 __ b(_continuation);
237 }
238
239
240 // Implementation of NewObjectArrayStub
241
242 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info, bool is_value_type) {
243 _klass_reg = klass_reg;
244 _result = result;
245 _length = length;
246 _info = new CodeEmitInfo(info);
247 _is_value_type = is_value_type;
248 }
249
250
251 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
252 assert(__ rsp_offset() == 0, "frame size should be fixed");
253 __ bind(_entry);
254 assert(_length->as_register() == r19, "length must in r19,");
255 assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
256
257 if (_is_value_type) {
258 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_value_array_id)));
259 } else {
260 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
261 }
262
263 ce->add_call_info_here(_info);
264 ce->verify_oop_map(_info);
265 assert(_result->as_register() == r0, "result must in r0");
266 __ b(_continuation);
267 }
268 // Implementation of MonitorAccessStubs
269
270 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info, CodeStub* throw_imse_stub, LIR_Opr scratch_reg)
271 : MonitorAccessStub(obj_reg, lock_reg)
272 {
273 _info = new CodeEmitInfo(info);
274 _scratch_reg = scratch_reg;
275 _throw_imse_stub = throw_imse_stub;
276 if (_throw_imse_stub != NULL) {
277 assert(_scratch_reg != LIR_OprFact::illegalOpr, "must be");
278 }
279 }
280
281
282 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
283 assert(__ rsp_offset() == 0, "frame size should be fixed");
284 __ bind(_entry);
285 if (_throw_imse_stub != NULL) {
286 // When we come here, _obj_reg has already been checked to be non-null.
287 __ ldr(rscratch1, Address(_obj_reg->as_register(), oopDesc::mark_offset_in_bytes()));
288 __ mov(rscratch2, markOopDesc::always_locked_pattern);
289 __ andr(rscratch1, rscratch1, rscratch2);
290
291 __ cmp(rscratch1, rscratch2);
292 __ br(Assembler::NE, *_throw_imse_stub->entry());
293 }
294
295 ce->store_parameter(_obj_reg->as_register(), 1);
296 ce->store_parameter(_lock_reg->as_register(), 0);
297 Runtime1::StubID enter_id;
298 if (ce->compilation()->has_fpu_code()) {
299 enter_id = Runtime1::monitorenter_id;
300 } else {
301 enter_id = Runtime1::monitorenter_nofpu_id;
302 }
303 __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));
304 ce->add_call_info_here(_info);
305 ce->verify_oop_map(_info);
306 __ b(_continuation);
307 }
308
309
310 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
311 __ bind(_entry);
312 if (_compute_lock) {
313 // lock_reg was destroyed by fast unlocking attempt => recompute it
314 ce->monitor_address(_monitor_ix, _lock_reg);
315 }
316 ce->store_parameter(_lock_reg->as_register(), 0);
317 // note: non-blocking leaf routine => no call info needed
318 Runtime1::StubID exit_id;
319 if (ce->compilation()->has_fpu_code()) {
320 exit_id = Runtime1::monitorexit_id;
321 } else {
322 exit_id = Runtime1::monitorexit_nofpu_id;
323 }
324 __ adr(lr, _continuation);
325 __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));
326 }
327
328
329 // Implementation of patching:
330 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
331 // - Replace original code with a call to the stub
332 // At Runtime:
333 // - call to stub, jump to runtime
334 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
335 // - in runtime: after initializing class, restore original code, reexecute instruction
336
337 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
338
339 void PatchingStub::align_patch_site(MacroAssembler* masm) {
340 }
341
342 void PatchingStub::emit_code(LIR_Assembler* ce) {
343 assert(false, "AArch64 should not use C1 runtime patching");
344 }
345
346
347 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
348 __ bind(_entry);
349 ce->store_parameter(_trap_request, 0);
350 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
351 ce->add_call_info_here(_info);
352 DEBUG_ONLY(__ should_not_reach_here());
353 }
354
355
356 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
357 address a;
358 if (_info->deoptimize_on_exception()) {
359 // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
360 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
361 } else {
362 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
363 }
364
365 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
366 __ bind(_entry);
367 __ far_call(RuntimeAddress(a));
368 ce->add_call_info_here(_info);
369 ce->verify_oop_map(_info);
370 debug_only(__ should_not_reach_here());
371 }
372
373
374 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
375 assert(__ rsp_offset() == 0, "frame size should be fixed");
376
377 __ bind(_entry);
378 // pass the object in a scratch register because all other registers
379 // must be preserved
380 if (_obj->is_cpu_register()) {
381 __ mov(rscratch1, _obj->as_register());
382 }
383 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2);
384 ce->add_call_info_here(_info);
385 debug_only(__ should_not_reach_here());
386 }
387
388
389 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
390 //---------------slow case: call to native-----------------
391 __ bind(_entry);
392 // Figure out where the args should go
393 // This should really convert the IntrinsicID to the Method* and signature
394 // but I don't know how to do that.
395 //
396 VMRegPair args[5];
397 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
398 SharedRuntime::java_calling_convention(signature, args, 5, true);
399
400 // push parameters
401 // (src, src_pos, dest, destPos, length)
402 Register r[5];
403 r[0] = src()->as_register();
404 r[1] = src_pos()->as_register();
405 r[2] = dst()->as_register();
406 r[3] = dst_pos()->as_register();
407 r[4] = length()->as_register();
408
409 // next registers will get stored on the stack
410 for (int i = 0; i < 5 ; i++ ) {
411 VMReg r_1 = args[i].first();
412 if (r_1->is_stack()) {
413 int st_off = r_1->reg2stack() * wordSize;
414 __ str (r[i], Address(sp, st_off));
415 } else {
416 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
417 }
418 }
419
420 ce->align_call(lir_static_call);
421
422 ce->emit_static_call_stub();
423 if (ce->compilation()->bailed_out()) {
424 return; // CodeCache is full
425 }
426 Address resolve(SharedRuntime::get_resolve_static_call_stub(),
427 relocInfo::static_call_type);
428 address call = __ trampoline_call(resolve);
429 if (call == NULL) {
430 ce->bailout("trampoline stub overflow");
431 return;
432 }
433 ce->add_call_info_here(info());
434
435 #ifndef PRODUCT
436 __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
437 __ incrementw(Address(rscratch2));
438 #endif
439
440 __ b(_continuation);
441 }
442
443 #undef __