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, LIR_Opr array) 55 : _throw_index_out_of_bounds_exception(array == NULL), _index(index), _array(array) { 56 assert(info != NULL, "must have info"); 57 _info = new CodeEmitInfo(info); 58 } 59 60 void RangeCheckStub::emit_code(LIR_Assembler* ce) { 61 __ bind(_entry); 62 if (_info->deoptimize_on_exception()) { 63 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 64 __ far_call(RuntimeAddress(a)); 65 ce->add_call_info_here(_info); 66 ce->verify_oop_map(_info); 67 debug_only(__ should_not_reach_here()); 68 return; 69 } 70 71 if (_index->is_cpu_register()) { 72 __ mov(rscratch1, _index->as_register()); 73 } else { 74 __ mov(rscratch1, _index->as_jint()); 75 } 76 Runtime1::StubID stub_id; 77 if (_throw_index_out_of_bounds_exception) { 78 assert(_array != NULL, "sanity"); 79 __ mov(rscratch2, _array->as_pointer_register()); 80 stub_id = Runtime1::throw_index_exception_id; 81 } else { 82 stub_id = Runtime1::throw_range_check_failed_id; 83 } 84 __ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL, rscratch2); 85 ce->add_call_info_here(_info); 86 ce->verify_oop_map(_info); 87 debug_only(__ should_not_reach_here()); 88 } 89 90 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) { 91 _info = new CodeEmitInfo(info); 92 } 93 94 void PredicateFailedStub::emit_code(LIR_Assembler* ce) { 95 __ bind(_entry); 96 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 97 __ far_call(RuntimeAddress(a)); 98 ce->add_call_info_here(_info); 99 ce->verify_oop_map(_info); 100 debug_only(__ should_not_reach_here()); 101 } 102 103 void DivByZeroStub::emit_code(LIR_Assembler* ce) { 104 if (_offset != -1) { 105 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); 106 } 107 __ bind(_entry); 108 __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type)); 109 ce->add_call_info_here(_info); 110 ce->verify_oop_map(_info); 111 #ifdef ASSERT 112 __ should_not_reach_here(); 113 #endif 114 } 115 116 117 118 // Implementation of NewInstanceStub 119 120 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) { 121 _result = result; 122 _klass = klass; 123 _klass_reg = klass_reg; 124 _info = new CodeEmitInfo(info); 125 assert(stub_id == Runtime1::new_instance_id || 126 stub_id == Runtime1::fast_new_instance_id || 127 stub_id == Runtime1::fast_new_instance_init_check_id, 128 "need new_instance id"); 129 _stub_id = stub_id; 130 } 131 132 133 134 void NewInstanceStub::emit_code(LIR_Assembler* ce) { 135 assert(__ rsp_offset() == 0, "frame size should be fixed"); 136 __ bind(_entry); 137 __ mov(r3, _klass_reg->as_register()); 138 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id))); 139 ce->add_call_info_here(_info); 140 ce->verify_oop_map(_info); 141 assert(_result->as_register() == r0, "result must in r0,"); 142 __ b(_continuation); 143 } 144 145 146 // Implementation of NewTypeArrayStub 147 148 // Implementation of NewTypeArrayStub 149 150 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 151 _klass_reg = klass_reg; 152 _length = length; 153 _result = result; 154 _info = new CodeEmitInfo(info); 155 } 156 157 158 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { 159 assert(__ rsp_offset() == 0, "frame size should be fixed"); 160 __ bind(_entry); 161 assert(_length->as_register() == r19, "length must in r19,"); 162 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 163 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id))); 164 ce->add_call_info_here(_info); 165 ce->verify_oop_map(_info); 166 assert(_result->as_register() == r0, "result must in r0"); 167 __ b(_continuation); 168 } 169 170 171 // Implementation of NewObjectArrayStub 172 173 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 174 _klass_reg = klass_reg; 175 _result = result; 176 _length = length; 177 _info = new CodeEmitInfo(info); 178 } 179 180 181 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { 182 assert(__ rsp_offset() == 0, "frame size should be fixed"); 183 __ bind(_entry); 184 assert(_length->as_register() == r19, "length must in r19,"); 185 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 186 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id))); 187 ce->add_call_info_here(_info); 188 ce->verify_oop_map(_info); 189 assert(_result->as_register() == r0, "result must in r0"); 190 __ b(_continuation); 191 } 192 // Implementation of MonitorAccessStubs 193 194 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info) 195 : MonitorAccessStub(obj_reg, lock_reg) 196 { 197 _info = new CodeEmitInfo(info); 198 } 199 200 201 void MonitorEnterStub::emit_code(LIR_Assembler* ce) { 202 assert(__ rsp_offset() == 0, "frame size should be fixed"); 203 __ bind(_entry); 204 ce->store_parameter(_obj_reg->as_register(), 1); 205 ce->store_parameter(_lock_reg->as_register(), 0); 206 Runtime1::StubID enter_id; 207 if (ce->compilation()->has_fpu_code()) { 208 enter_id = Runtime1::monitorenter_id; 209 } else { 210 enter_id = Runtime1::monitorenter_nofpu_id; 211 } 212 __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id))); 213 ce->add_call_info_here(_info); 214 ce->verify_oop_map(_info); 215 __ b(_continuation); 216 } 217 218 219 void MonitorExitStub::emit_code(LIR_Assembler* ce) { 220 __ bind(_entry); 221 if (_compute_lock) { 222 // lock_reg was destroyed by fast unlocking attempt => recompute it 223 ce->monitor_address(_monitor_ix, _lock_reg); 224 } 225 ce->store_parameter(_lock_reg->as_register(), 0); 226 // note: non-blocking leaf routine => no call info needed 227 Runtime1::StubID exit_id; 228 if (ce->compilation()->has_fpu_code()) { 229 exit_id = Runtime1::monitorexit_id; 230 } else { 231 exit_id = Runtime1::monitorexit_nofpu_id; 232 } 233 __ adr(lr, _continuation); 234 __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id))); 235 } 236 237 238 // Implementation of patching: 239 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes) 240 // - Replace original code with a call to the stub 241 // At Runtime: 242 // - call to stub, jump to runtime 243 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object) 244 // - in runtime: after initializing class, restore original code, reexecute instruction 245 246 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; 247 248 void PatchingStub::align_patch_site(MacroAssembler* masm) { 249 } 250 251 void PatchingStub::emit_code(LIR_Assembler* ce) { 252 assert(false, "AArch64 should not use C1 runtime patching"); 253 } 254 255 256 void DeoptimizeStub::emit_code(LIR_Assembler* ce) { 257 __ bind(_entry); 258 ce->store_parameter(_trap_request, 0); 259 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id))); 260 ce->add_call_info_here(_info); 261 DEBUG_ONLY(__ should_not_reach_here()); 262 } 263 264 265 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) { 266 address a; 267 if (_info->deoptimize_on_exception()) { 268 // Deoptimize, do not throw the exception, because it is probably wrong to do it here. 269 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 270 } else { 271 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id); 272 } 273 274 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); 275 __ bind(_entry); 276 __ far_call(RuntimeAddress(a)); 277 ce->add_call_info_here(_info); 278 ce->verify_oop_map(_info); 279 debug_only(__ should_not_reach_here()); 280 } 281 282 283 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) { 284 assert(__ rsp_offset() == 0, "frame size should be fixed"); 285 286 __ bind(_entry); 287 // pass the object in a scratch register because all other registers 288 // must be preserved 289 if (_obj->is_cpu_register()) { 290 __ mov(rscratch1, _obj->as_register()); 291 } 292 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2); 293 ce->add_call_info_here(_info); 294 debug_only(__ should_not_reach_here()); 295 } 296 297 298 void ArrayCopyStub::emit_code(LIR_Assembler* ce) { 299 //---------------slow case: call to native----------------- 300 __ bind(_entry); 301 // Figure out where the args should go 302 // This should really convert the IntrinsicID to the Method* and signature 303 // but I don't know how to do that. 304 // 305 VMRegPair args[5]; 306 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT}; 307 SharedRuntime::java_calling_convention(signature, args, 5, true); 308 309 // push parameters 310 // (src, src_pos, dest, destPos, length) 311 Register r[5]; 312 r[0] = src()->as_register(); 313 r[1] = src_pos()->as_register(); 314 r[2] = dst()->as_register(); 315 r[3] = dst_pos()->as_register(); 316 r[4] = length()->as_register(); 317 318 // next registers will get stored on the stack 319 for (int i = 0; i < 5 ; i++ ) { 320 VMReg r_1 = args[i].first(); 321 if (r_1->is_stack()) { 322 int st_off = r_1->reg2stack() * wordSize; 323 __ str (r[i], Address(sp, st_off)); 324 } else { 325 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg "); 326 } 327 } 328 329 ce->align_call(lir_static_call); 330 331 ce->emit_static_call_stub(); 332 if (ce->compilation()->bailed_out()) { 333 return; // CodeCache is full 334 } 335 Address resolve(SharedRuntime::get_resolve_static_call_stub(), 336 relocInfo::static_call_type); 337 address call = __ trampoline_call(resolve); 338 if (call == NULL) { 339 ce->bailout("trampoline stub overflow"); 340 return; 341 } 342 ce->add_call_info_here(info()); 343 344 #ifndef PRODUCT 345 __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt)); 346 __ incrementw(Address(rscratch2)); 347 #endif 348 349 __ b(_continuation); 350 } 351 352 353 ///////////////////////////////////////////////////////////////////////////// 354 #if INCLUDE_ALL_GCS 355 356 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) { 357 // At this point we know that marking is in progress. 358 // If do_load() is true then we have to emit the 359 // load of the previous value; otherwise it has already 360 // been loaded into _pre_val. 361 362 __ bind(_entry); 363 assert(pre_val()->is_register(), "Precondition."); 364 365 Register pre_val_reg = pre_val()->as_register(); 366 367 if (do_load()) { 368 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/); 369 } 370 __ cbz(pre_val_reg, _continuation); 371 ce->store_parameter(pre_val()->as_register(), 0); 372 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_pre_barrier_slow_id))); 373 __ b(_continuation); 374 } 375 376 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) { 377 __ bind(_entry); 378 assert(addr()->is_register(), "Precondition."); 379 assert(new_val()->is_register(), "Precondition."); 380 Register new_val_reg = new_val()->as_register(); 381 __ cbz(new_val_reg, _continuation); 382 ce->store_parameter(addr()->as_pointer_register(), 0); 383 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id))); 384 __ b(_continuation); 385 } 386 387 #endif // INCLUDE_ALL_GCS 388 ///////////////////////////////////////////////////////////////////////////// 389 390 #undef __