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 "c1/c1_CodeStubs.hpp"
28 #include "c1/c1_FrameMap.hpp"
29 #include "c1/c1_LIRAssembler.hpp"
30 #include "c1/c1_MacroAssembler.hpp"
31 #include "c1/c1_Runtime1.hpp"
32 #include "nativeInst_aarch64.hpp"
33 #include "runtime/sharedRuntime.hpp"
34 #include "vmreg_aarch64.inline.hpp"
35
36
37 #define __ ce->masm()->
38
39 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
40 __ bind(_entry);
41 Metadata *m = _method->as_constant_ptr()->as_metadata();
42 __ mov_metadata(rscratch1, m);
43 ce->store_parameter(rscratch1, 1);
44 ce->store_parameter(_bci, 0);
45 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));
46 ce->add_call_info_here(_info);
47 ce->verify_oop_map(_info);
48 __ b(_continuation);
49 }
50
51 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, LIR_Opr array)
52 : _throw_index_out_of_bounds_exception(false), _index(index), _array(array) {
53 assert(info != NULL, "must have info");
54 _info = new CodeEmitInfo(info);
55 }
56
57 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index)
58 : _throw_index_out_of_bounds_exception(true), _index(index), _array(NULL) {
59 assert(info != NULL, "must have info");
60 _info = new CodeEmitInfo(info);
61 }
62
63 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
64 __ bind(_entry);
65 if (_info->deoptimize_on_exception()) {
66 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
67 __ far_call(RuntimeAddress(a));
68 ce->add_call_info_here(_info);
69 ce->verify_oop_map(_info);
70 debug_only(__ should_not_reach_here());
71 return;
72 }
73
74 if (_index->is_cpu_register()) {
75 __ mov(r22, _index->as_register());
76 } else {
77 __ mov(r22, _index->as_jint());
78 }
79 Runtime1::StubID stub_id;
80 if (_throw_index_out_of_bounds_exception) {
81 stub_id = Runtime1::throw_index_exception_id;
82 } else {
83 assert(_array != NULL, "sanity");
84 __ mov(r23, _array->as_pointer_register());
85 stub_id = Runtime1::throw_range_check_failed_id;
86 }
87 __ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL, rscratch2);
88 ce->add_call_info_here(_info);
89 ce->verify_oop_map(_info);
90 debug_only(__ should_not_reach_here());
91 }
92
93 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
94 _info = new CodeEmitInfo(info);
95 }
96
97 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
98 __ bind(_entry);
99 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
100 __ far_call(RuntimeAddress(a));
101 ce->add_call_info_here(_info);
102 ce->verify_oop_map(_info);
103 debug_only(__ should_not_reach_here());
104 }
105
106 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
107 if (_offset != -1) {
108 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
109 }
110 __ bind(_entry);
111 __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type));
112 ce->add_call_info_here(_info);
113 ce->verify_oop_map(_info);
114 #ifdef ASSERT
115 __ should_not_reach_here();
116 #endif
117 }
118
119
120
121 // Implementation of NewInstanceStub
122
123 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
124 _result = result;
125 _klass = klass;
126 _klass_reg = klass_reg;
127 _info = new CodeEmitInfo(info);
128 assert(stub_id == Runtime1::new_instance_id ||
129 stub_id == Runtime1::fast_new_instance_id ||
130 stub_id == Runtime1::fast_new_instance_init_check_id,
131 "need new_instance id");
132 _stub_id = stub_id;
133 }
134
135
136
137 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
138 assert(__ rsp_offset() == 0, "frame size should be fixed");
139 __ bind(_entry);
140 __ mov(r3, _klass_reg->as_register());
141 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
142 ce->add_call_info_here(_info);
143 ce->verify_oop_map(_info);
144 assert(_result->as_register() == r0, "result must in r0,");
145 __ b(_continuation);
146 }
147
148
149 // Implementation of NewTypeArrayStub
150
151 // Implementation of NewTypeArrayStub
152
153 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
154 _klass_reg = klass_reg;
155 _length = length;
156 _result = result;
157 _info = new CodeEmitInfo(info);
158 }
159
160
161 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
162 assert(__ rsp_offset() == 0, "frame size should be fixed");
163 __ bind(_entry);
164 assert(_length->as_register() == r19, "length must in r19,");
165 assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
166 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
167 ce->add_call_info_here(_info);
168 ce->verify_oop_map(_info);
169 assert(_result->as_register() == r0, "result must in r0");
170 __ b(_continuation);
171 }
172
173
174 // Implementation of NewObjectArrayStub
175
176 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
177 _klass_reg = klass_reg;
178 _result = result;
179 _length = length;
180 _info = new CodeEmitInfo(info);
181 }
182
183
184 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
185 assert(__ rsp_offset() == 0, "frame size should be fixed");
186 __ bind(_entry);
187 assert(_length->as_register() == r19, "length must in r19,");
188 assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
189 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
190 ce->add_call_info_here(_info);
191 ce->verify_oop_map(_info);
192 assert(_result->as_register() == r0, "result must in r0");
193 __ b(_continuation);
194 }
195 // Implementation of MonitorAccessStubs
196
197 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
198 : MonitorAccessStub(obj_reg, lock_reg)
199 {
200 _info = new CodeEmitInfo(info);
201 }
202
203
204 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
205 assert(__ rsp_offset() == 0, "frame size should be fixed");
206 __ bind(_entry);
207 ce->store_parameter(_obj_reg->as_register(), 1);
208 ce->store_parameter(_lock_reg->as_register(), 0);
209 Runtime1::StubID enter_id;
210 if (ce->compilation()->has_fpu_code()) {
211 enter_id = Runtime1::monitorenter_id;
212 } else {
213 enter_id = Runtime1::monitorenter_nofpu_id;
214 }
215 __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));
216 ce->add_call_info_here(_info);
217 ce->verify_oop_map(_info);
218 __ b(_continuation);
219 }
220
221
222 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
223 __ bind(_entry);
224 if (_compute_lock) {
225 // lock_reg was destroyed by fast unlocking attempt => recompute it
226 ce->monitor_address(_monitor_ix, _lock_reg);
227 }
228 ce->store_parameter(_lock_reg->as_register(), 0);
229 // note: non-blocking leaf routine => no call info needed
230 Runtime1::StubID exit_id;
231 if (ce->compilation()->has_fpu_code()) {
232 exit_id = Runtime1::monitorexit_id;
233 } else {
234 exit_id = Runtime1::monitorexit_nofpu_id;
235 }
236 __ adr(lr, _continuation);
237 __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));
238 }
239
240
241 // Implementation of patching:
242 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
243 // - Replace original code with a call to the stub
244 // At Runtime:
245 // - call to stub, jump to runtime
246 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
247 // - in runtime: after initializing class, restore original code, reexecute instruction
248
249 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
250
251 void PatchingStub::align_patch_site(MacroAssembler* masm) {
252 }
253
254 void PatchingStub::emit_code(LIR_Assembler* ce) {
255 assert(false, "AArch64 should not use C1 runtime patching");
256 }
257
258
259 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
260 __ bind(_entry);
261 ce->store_parameter(_trap_request, 0);
262 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
263 ce->add_call_info_here(_info);
264 DEBUG_ONLY(__ should_not_reach_here());
265 }
266
267
268 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
269 address a;
270 if (_info->deoptimize_on_exception()) {
271 // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
272 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
273 } else {
274 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
275 }
276
277 ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
278 __ bind(_entry);
279 __ far_call(RuntimeAddress(a));
280 ce->add_call_info_here(_info);
281 ce->verify_oop_map(_info);
282 debug_only(__ should_not_reach_here());
283 }
284
285
286 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
287 assert(__ rsp_offset() == 0, "frame size should be fixed");
288
289 __ bind(_entry);
290 // pass the object in a scratch register because all other registers
291 // must be preserved
292 if (_obj->is_cpu_register()) {
293 __ mov(rscratch1, _obj->as_register());
294 }
295 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2);
296 ce->add_call_info_here(_info);
297 debug_only(__ should_not_reach_here());
298 }
299
300
301 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
302 //---------------slow case: call to native-----------------
303 __ bind(_entry);
304 // Figure out where the args should go
305 // This should really convert the IntrinsicID to the Method* and signature
306 // but I don't know how to do that.
307 //
308 VMRegPair args[5];
309 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
310 SharedRuntime::java_calling_convention(signature, args, 5, true);
311
312 // push parameters
313 // (src, src_pos, dest, destPos, length)
314 Register r[5];
315 r[0] = src()->as_register();
316 r[1] = src_pos()->as_register();
317 r[2] = dst()->as_register();
318 r[3] = dst_pos()->as_register();
319 r[4] = length()->as_register();
320
321 // next registers will get stored on the stack
322 for (int i = 0; i < 5 ; i++ ) {
323 VMReg r_1 = args[i].first();
324 if (r_1->is_stack()) {
325 int st_off = r_1->reg2stack() * wordSize;
326 __ str (r[i], Address(sp, st_off));
327 } else {
328 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
329 }
330 }
331
332 ce->align_call(lir_static_call);
333
334 ce->emit_static_call_stub();
335 if (ce->compilation()->bailed_out()) {
336 return; // CodeCache is full
337 }
338 Address resolve(SharedRuntime::get_resolve_static_call_stub(),
339 relocInfo::static_call_type);
340 address call = __ trampoline_call(resolve);
341 if (call == NULL) {
342 ce->bailout("trampoline stub overflow");
343 return;
344 }
345 ce->add_call_info_here(info());
346
347 #ifndef PRODUCT
348 __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
349 __ incrementw(Address(rscratch2));
350 #endif
351
352 __ b(_continuation);
353 }
354
355 #undef __