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 #if INCLUDE_ALL_GCS 36 #include "gc/g1/g1BarrierSet.hpp" 37 #endif 38 39 40 #define __ ce->masm()-> 41 42 void CounterOverflowStub::emit_code(LIR_Assembler* ce) { 43 __ bind(_entry); 44 Metadata *m = _method->as_constant_ptr()->as_metadata(); 45 __ mov_metadata(rscratch1, m); 46 ce->store_parameter(rscratch1, 1); 47 ce->store_parameter(_bci, 0); 48 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id))); 49 ce->add_call_info_here(_info); 50 ce->verify_oop_map(_info); 51 __ b(_continuation); 52 } 53 54 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, 55 bool throw_index_out_of_bounds_exception) 56 : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception) 57 , _index(index) 58 { 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(rscratch1, _index->as_register()); 76 } else { 77 __ mov(rscratch1, _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 stub_id = Runtime1::throw_range_check_failed_id; 84 } 85 __ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL, rscratch2); 86 ce->add_call_info_here(_info); 87 ce->verify_oop_map(_info); 88 debug_only(__ should_not_reach_here()); 89 } 90 91 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) { 92 _info = new CodeEmitInfo(info); 93 } 94 95 void PredicateFailedStub::emit_code(LIR_Assembler* ce) { 96 __ bind(_entry); 97 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 98 __ far_call(RuntimeAddress(a)); 99 ce->add_call_info_here(_info); 100 ce->verify_oop_map(_info); 101 debug_only(__ should_not_reach_here()); 102 } 103 104 void DivByZeroStub::emit_code(LIR_Assembler* ce) { 105 if (_offset != -1) { 106 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); 107 } 108 __ bind(_entry); 109 __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type)); 110 ce->add_call_info_here(_info); 111 ce->verify_oop_map(_info); 112 #ifdef ASSERT 113 __ should_not_reach_here(); 114 #endif 115 } 116 117 118 119 // Implementation of NewInstanceStub 120 121 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) { 122 _result = result; 123 _klass = klass; 124 _klass_reg = klass_reg; 125 _info = new CodeEmitInfo(info); 126 assert(stub_id == Runtime1::new_instance_id || 127 stub_id == Runtime1::fast_new_instance_id || 128 stub_id == Runtime1::fast_new_instance_init_check_id, 129 "need new_instance id"); 130 _stub_id = stub_id; 131 } 132 133 134 135 void NewInstanceStub::emit_code(LIR_Assembler* ce) { 136 assert(__ rsp_offset() == 0, "frame size should be fixed"); 137 __ bind(_entry); 138 __ mov(r3, _klass_reg->as_register()); 139 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id))); 140 ce->add_call_info_here(_info); 141 ce->verify_oop_map(_info); 142 assert(_result->as_register() == r0, "result must in r0,"); 143 __ b(_continuation); 144 } 145 146 147 // Implementation of NewTypeArrayStub 148 149 // Implementation of NewTypeArrayStub 150 151 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 152 _klass_reg = klass_reg; 153 _length = length; 154 _result = result; 155 _info = new CodeEmitInfo(info); 156 } 157 158 159 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { 160 assert(__ rsp_offset() == 0, "frame size should be fixed"); 161 __ bind(_entry); 162 assert(_length->as_register() == r19, "length must in r19,"); 163 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 164 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id))); 165 ce->add_call_info_here(_info); 166 ce->verify_oop_map(_info); 167 assert(_result->as_register() == r0, "result must in r0"); 168 __ b(_continuation); 169 } 170 171 172 // Implementation of NewObjectArrayStub 173 174 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 175 _klass_reg = klass_reg; 176 _result = result; 177 _length = length; 178 _info = new CodeEmitInfo(info); 179 } 180 181 182 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { 183 assert(__ rsp_offset() == 0, "frame size should be fixed"); 184 __ bind(_entry); 185 assert(_length->as_register() == r19, "length must in r19,"); 186 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 187 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id))); 188 ce->add_call_info_here(_info); 189 ce->verify_oop_map(_info); 190 assert(_result->as_register() == r0, "result must in r0"); 191 __ b(_continuation); 192 } 193 // Implementation of MonitorAccessStubs 194 195 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info) 196 : MonitorAccessStub(obj_reg, lock_reg) 197 { 198 _info = new CodeEmitInfo(info); 199 } 200 201 202 void MonitorEnterStub::emit_code(LIR_Assembler* ce) { 203 assert(__ rsp_offset() == 0, "frame size should be fixed"); 204 __ bind(_entry); 205 ce->store_parameter(_obj_reg->as_register(), 1); 206 ce->store_parameter(_lock_reg->as_register(), 0); 207 Runtime1::StubID enter_id; 208 if (ce->compilation()->has_fpu_code()) { 209 enter_id = Runtime1::monitorenter_id; 210 } else { 211 enter_id = Runtime1::monitorenter_nofpu_id; 212 } 213 __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id))); 214 ce->add_call_info_here(_info); 215 ce->verify_oop_map(_info); 216 __ b(_continuation); 217 } 218 219 220 void MonitorExitStub::emit_code(LIR_Assembler* ce) { 221 __ bind(_entry); 222 if (_compute_lock) { 223 // lock_reg was destroyed by fast unlocking attempt => recompute it 224 ce->monitor_address(_monitor_ix, _lock_reg); 225 } 226 ce->store_parameter(_lock_reg->as_register(), 0); 227 // note: non-blocking leaf routine => no call info needed 228 Runtime1::StubID exit_id; 229 if (ce->compilation()->has_fpu_code()) { 230 exit_id = Runtime1::monitorexit_id; 231 } else { 232 exit_id = Runtime1::monitorexit_nofpu_id; 233 } 234 __ adr(lr, _continuation); 235 __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id))); 236 } 237 238 239 // Implementation of patching: 240 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes) 241 // - Replace original code with a call to the stub 242 // At Runtime: 243 // - call to stub, jump to runtime 244 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object) 245 // - in runtime: after initializing class, restore original code, reexecute instruction 246 247 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; 248 249 void PatchingStub::align_patch_site(MacroAssembler* masm) { 250 } 251 252 void PatchingStub::emit_code(LIR_Assembler* ce) { 253 assert(false, "AArch64 should not use C1 runtime patching"); 254 } 255 256 257 void DeoptimizeStub::emit_code(LIR_Assembler* ce) { 258 __ bind(_entry); 259 ce->store_parameter(_trap_request, 0); 260 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id))); 261 ce->add_call_info_here(_info); 262 DEBUG_ONLY(__ should_not_reach_here()); 263 } 264 265 266 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) { 267 address a; 268 if (_info->deoptimize_on_exception()) { 269 // Deoptimize, do not throw the exception, because it is probably wrong to do it here. 270 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 271 } else { 272 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id); 273 } 274 275 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); 276 __ bind(_entry); 277 __ far_call(RuntimeAddress(a)); 278 ce->add_call_info_here(_info); 279 ce->verify_oop_map(_info); 280 debug_only(__ should_not_reach_here()); 281 } 282 283 284 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) { 285 assert(__ rsp_offset() == 0, "frame size should be fixed"); 286 287 __ bind(_entry); 288 // pass the object in a scratch register because all other registers 289 // must be preserved 290 if (_obj->is_cpu_register()) { 291 __ mov(rscratch1, _obj->as_register()); 292 } 293 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2); 294 ce->add_call_info_here(_info); 295 debug_only(__ should_not_reach_here()); 296 } 297 298 299 void ArrayCopyStub::emit_code(LIR_Assembler* ce) { 300 //---------------slow case: call to native----------------- 301 __ bind(_entry); 302 // Figure out where the args should go 303 // This should really convert the IntrinsicID to the Method* and signature 304 // but I don't know how to do that. 305 // 306 VMRegPair args[5]; 307 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT}; 308 SharedRuntime::java_calling_convention(signature, args, 5, true); 309 310 // push parameters 311 // (src, src_pos, dest, destPos, length) 312 Register r[5]; 313 r[0] = src()->as_register(); 314 r[1] = src_pos()->as_register(); 315 r[2] = dst()->as_register(); 316 r[3] = dst_pos()->as_register(); 317 r[4] = length()->as_register(); 318 319 // next registers will get stored on the stack 320 for (int i = 0; i < 5 ; i++ ) { 321 VMReg r_1 = args[i].first(); 322 if (r_1->is_stack()) { 323 int st_off = r_1->reg2stack() * wordSize; 324 __ str (r[i], Address(sp, st_off)); 325 } else { 326 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg "); 327 } 328 } 329 330 ce->align_call(lir_static_call); 331 332 ce->emit_static_call_stub(); 333 if (ce->compilation()->bailed_out()) { 334 return; // CodeCache is full 335 } 336 Address resolve(SharedRuntime::get_resolve_static_call_stub(), 337 relocInfo::static_call_type); 338 address call = __ trampoline_call(resolve); 339 if (call == NULL) { 340 ce->bailout("trampoline stub overflow"); 341 return; 342 } 343 ce->add_call_info_here(info()); 344 345 #ifndef PRODUCT 346 __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt)); 347 __ incrementw(Address(rscratch2)); 348 #endif 349 350 __ b(_continuation); 351 } 352 353 354 ///////////////////////////////////////////////////////////////////////////// 355 #if INCLUDE_ALL_GCS 356 357 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) { 358 // At this point we know that marking is in progress. 359 // If do_load() is true then we have to emit the 360 // load of the previous value; otherwise it has already 361 // been loaded into _pre_val. 362 363 __ bind(_entry); 364 assert(pre_val()->is_register(), "Precondition."); 365 366 Register pre_val_reg = pre_val()->as_register(); 367 368 if (do_load()) { 369 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/); 370 } 371 __ cbz(pre_val_reg, _continuation); 372 ce->store_parameter(pre_val()->as_register(), 0); 373 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_pre_barrier_slow_id))); 374 __ b(_continuation); 375 } 376 377 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) { 378 __ bind(_entry); 379 assert(addr()->is_register(), "Precondition."); 380 assert(new_val()->is_register(), "Precondition."); 381 Register new_val_reg = new_val()->as_register(); 382 __ cbz(new_val_reg, _continuation); 383 ce->store_parameter(addr()->as_pointer_register(), 0); 384 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id))); 385 __ b(_continuation); 386 } 387 388 #endif // INCLUDE_ALL_GCS 389 ///////////////////////////////////////////////////////////////////////////// 390 391 #undef __