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, LIR_Opr result, CodeEmitInfo* info) {
171 _left = left;
172 _right = right;
173 _result = result;
174 _scratch_reg = FrameMap::r0_oop_opr;
175 _info = new CodeEmitInfo(info);
176 }
177
178 void SubstitutabilityCheckStub::emit_code(LIR_Assembler* ce) {
179 assert(__ rsp_offset() == 0, "frame size should be fixed");
180 __ bind(_entry);
181 ce->store_parameter(_left->as_register(), 1);
182 ce->store_parameter(_right->as_register(), 0);
183 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::substitutability_check_id)));
184 ce->add_call_info_here(_info);
185 ce->verify_oop_map(_info);
186 if (_result->as_register() != r0) {
187 __ mov(_result->as_register(), r0);
188 }
189 __ b(_continuation);
190 }
191
192
193 // Implementation of NewInstanceStub
194
195 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
196 _result = result;
197 _klass = klass;
198 _klass_reg = klass_reg;
199 _info = new CodeEmitInfo(info);
200 assert(stub_id == Runtime1::new_instance_id ||
201 stub_id == Runtime1::fast_new_instance_id ||
202 stub_id == Runtime1::fast_new_instance_init_check_id,
203 "need new_instance id");
204 _stub_id = stub_id;
205 }
206
207 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
208 assert(__ rsp_offset() == 0, "frame size should be fixed");
209 __ bind(_entry);
210 __ mov(r3, _klass_reg->as_register());
211 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
212 ce->add_call_info_here(_info);
213 ce->verify_oop_map(_info);
214 assert(_result->as_register() == r0, "result must in r0,");
215 __ b(_continuation);
216 }
217
218
219 // Implementation of NewTypeArrayStub
220
221 // Implementation of NewTypeArrayStub
222
223 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
224 _klass_reg = klass_reg;
225 _length = length;
226 _result = result;
227 _info = new CodeEmitInfo(info);
228 }
229
230
231 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
232 assert(__ rsp_offset() == 0, "frame size should be fixed");
233 __ bind(_entry);
234 assert(_length->as_register() == r19, "length must in r19,");
235 assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
236 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
237 ce->add_call_info_here(_info);
238 ce->verify_oop_map(_info);
239 assert(_result->as_register() == r0, "result must in r0");
240 __ b(_continuation);
241 }
242
243
244 // Implementation of NewObjectArrayStub
245
246 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info, bool is_value_type) {
247 _klass_reg = klass_reg;
248 _result = result;
249 _length = length;
250 _info = new CodeEmitInfo(info);
251 _is_value_type = is_value_type;
252 }
253
254
255 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
256 assert(__ rsp_offset() == 0, "frame size should be fixed");
257 __ bind(_entry);
258 assert(_length->as_register() == r19, "length must in r19,");
259 assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
260
261 if (_is_value_type) {
262 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_value_array_id)));
263 } else {
264 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
265 }
266
267 ce->add_call_info_here(_info);
268 ce->verify_oop_map(_info);
269 assert(_result->as_register() == r0, "result must in r0");
270 __ b(_continuation);
271 }
272 // Implementation of MonitorAccessStubs
273
274 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info, CodeStub* throw_imse_stub, LIR_Opr scratch_reg)
275 : MonitorAccessStub(obj_reg, lock_reg)
276 {
277 _info = new CodeEmitInfo(info);
278 _scratch_reg = scratch_reg;
279 _throw_imse_stub = throw_imse_stub;
280 if (_throw_imse_stub != NULL) {
281 assert(_scratch_reg != LIR_OprFact::illegalOpr, "must be");
282 }
283 }
284
285
286 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
287 assert(__ rsp_offset() == 0, "frame size should be fixed");
288 __ bind(_entry);
289 if (_throw_imse_stub != NULL) {
290 // When we come here, _obj_reg has already been checked to be non-null.
291 __ ldr(rscratch1, Address(_obj_reg->as_register(), oopDesc::mark_offset_in_bytes()));
292 __ mov(rscratch2, markOopDesc::always_locked_pattern);
293 __ andr(rscratch1, rscratch1, rscratch2);
294
295 __ cmp(rscratch1, rscratch2);
296 __ br(Assembler::NE, *_throw_imse_stub->entry());
297 }
298
299 ce->store_parameter(_obj_reg->as_register(), 1);
300 ce->store_parameter(_lock_reg->as_register(), 0);
301 Runtime1::StubID enter_id;
302 if (ce->compilation()->has_fpu_code()) {
303 enter_id = Runtime1::monitorenter_id;
304 } else {
305 enter_id = Runtime1::monitorenter_nofpu_id;
306 }
307 __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));
308 ce->add_call_info_here(_info);
309 ce->verify_oop_map(_info);
310 __ b(_continuation);
311 }
312
313
314 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
315 __ bind(_entry);
316 if (_compute_lock) {
317 // lock_reg was destroyed by fast unlocking attempt => recompute it
318 ce->monitor_address(_monitor_ix, _lock_reg);
319 }
320 ce->store_parameter(_lock_reg->as_register(), 0);
321 // note: non-blocking leaf routine => no call info needed
322 Runtime1::StubID exit_id;
323 if (ce->compilation()->has_fpu_code()) {
324 exit_id = Runtime1::monitorexit_id;
325 } else {
326 exit_id = Runtime1::monitorexit_nofpu_id;
327 }
328 __ adr(lr, _continuation);
329 __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));
330 }
331
332
333 // Implementation of patching:
334 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
335 // - Replace original code with a call to the stub
336 // At Runtime:
337 // - call to stub, jump to runtime
338 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
339 // - in runtime: after initializing class, restore original code, reexecute instruction
340
341 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
342
343 void PatchingStub::align_patch_site(MacroAssembler* masm) {
344 }
345
346 void PatchingStub::emit_code(LIR_Assembler* ce) {
347 assert(false, "AArch64 should not use C1 runtime patching");
348 }
349
350
351 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
352 __ bind(_entry);
353 ce->store_parameter(_trap_request, 0);
354 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
355 ce->add_call_info_here(_info);
356 DEBUG_ONLY(__ should_not_reach_here());
357 }
358
359
360 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
361 address a;
362 if (_info->deoptimize_on_exception()) {
363 // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
364 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
365 } else {
366 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
367 }
368
369 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
370 __ bind(_entry);
371 __ far_call(RuntimeAddress(a));
372 ce->add_call_info_here(_info);
373 ce->verify_oop_map(_info);
374 debug_only(__ should_not_reach_here());
375 }
376
377
378 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
379 assert(__ rsp_offset() == 0, "frame size should be fixed");
380
381 __ bind(_entry);
382 // pass the object in a scratch register because all other registers
383 // must be preserved
384 if (_obj->is_cpu_register()) {
385 __ mov(rscratch1, _obj->as_register());
386 }
387 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2);
388 ce->add_call_info_here(_info);
389 debug_only(__ should_not_reach_here());
390 }
391
392
393 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
394 //---------------slow case: call to native-----------------
395 __ bind(_entry);
396 // Figure out where the args should go
397 // This should really convert the IntrinsicID to the Method* and signature
398 // but I don't know how to do that.
399 //
400 VMRegPair args[5];
401 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
402 SharedRuntime::java_calling_convention(signature, args, 5, true);
403
404 // push parameters
405 // (src, src_pos, dest, destPos, length)
406 Register r[5];
407 r[0] = src()->as_register();
408 r[1] = src_pos()->as_register();
409 r[2] = dst()->as_register();
410 r[3] = dst_pos()->as_register();
411 r[4] = length()->as_register();
412
413 // next registers will get stored on the stack
414 for (int i = 0; i < 5 ; i++ ) {
415 VMReg r_1 = args[i].first();
416 if (r_1->is_stack()) {
417 int st_off = r_1->reg2stack() * wordSize;
418 __ str (r[i], Address(sp, st_off));
419 } else {
420 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
421 }
422 }
423
424 ce->align_call(lir_static_call);
425
426 ce->emit_static_call_stub();
427 if (ce->compilation()->bailed_out()) {
428 return; // CodeCache is full
429 }
430 Address resolve(SharedRuntime::get_resolve_static_call_stub(),
431 relocInfo::static_call_type);
432 address call = __ trampoline_call(resolve);
433 if (call == NULL) {
434 ce->bailout("trampoline stub overflow");
435 return;
436 }
437 ce->add_call_info_here(info());
438
439 #ifndef PRODUCT
440 __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
441 __ incrementw(Address(rscratch2));
442 #endif
443
444 __ b(_continuation);
445 }
446
447 #undef __