1 /* 2 * Copyright (c) 1999, 2015, 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/g1SATBCardTableModRefBS.hpp" 37 #endif 38 39 40 #define __ ce->masm()-> 41 42 void CounterOverflowStub::emit_code(LIR_Assembler* ce) { 43 __ bind(_entry); 44 ce->store_parameter(_method->as_register(), 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, 53 bool throw_index_out_of_bounds_exception) 54 : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception) 55 , _index(index) 56 { 57 assert(info != NULL, "must have info"); 58 _info = new CodeEmitInfo(info); 59 } 60 61 void RangeCheckStub::emit_code(LIR_Assembler* ce) { 62 __ bind(_entry); 63 if (_info->deoptimize_on_exception()) { 64 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 65 __ far_call(RuntimeAddress(a)); 66 ce->add_call_info_here(_info); 67 ce->verify_oop_map(_info); 68 debug_only(__ should_not_reach_here()); 69 return; 70 } 71 72 if (_index->is_cpu_register()) { 73 __ mov(rscratch1, _index->as_register()); 74 } else { 75 __ mov(rscratch1, _index->as_jint()); 76 } 77 Runtime1::StubID stub_id; 78 if (_throw_index_out_of_bounds_exception) { 79 stub_id = Runtime1::throw_index_exception_id; 80 } else { 81 stub_id = Runtime1::throw_range_check_failed_id; 82 } 83 __ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL, rscratch2); 84 ce->add_call_info_here(_info); 85 ce->verify_oop_map(_info); 86 debug_only(__ should_not_reach_here()); 87 } 88 89 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) { 90 _info = new CodeEmitInfo(info); 91 } 92 93 void PredicateFailedStub::emit_code(LIR_Assembler* ce) { 94 __ bind(_entry); 95 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 96 __ far_call(RuntimeAddress(a)); 97 ce->add_call_info_here(_info); 98 ce->verify_oop_map(_info); 99 debug_only(__ should_not_reach_here()); 100 } 101 102 void DivByZeroStub::emit_code(LIR_Assembler* ce) { 103 if (_offset != -1) { 104 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); 105 } 106 __ bind(_entry); 107 __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type)); 108 ce->add_call_info_here(_info); 109 ce->verify_oop_map(_info); 110 #ifdef ASSERT 111 __ should_not_reach_here(); 112 #endif 113 } 114 115 116 117 // Implementation of NewInstanceStub 118 119 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) { 120 _result = result; 121 _klass = klass; 122 _klass_reg = klass_reg; 123 _info = new CodeEmitInfo(info); 124 assert(stub_id == Runtime1::new_instance_id || 125 stub_id == Runtime1::fast_new_instance_id || 126 stub_id == Runtime1::fast_new_instance_init_check_id, 127 "need new_instance id"); 128 _stub_id = stub_id; 129 } 130 131 132 133 void NewInstanceStub::emit_code(LIR_Assembler* ce) { 134 assert(__ rsp_offset() == 0, "frame size should be fixed"); 135 __ bind(_entry); 136 __ mov(r3, _klass_reg->as_register()); 137 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id))); 138 ce->add_call_info_here(_info); 139 ce->verify_oop_map(_info); 140 assert(_result->as_register() == r0, "result must in r0,"); 141 __ b(_continuation); 142 } 143 144 145 // Implementation of NewTypeArrayStub 146 147 // Implementation of NewTypeArrayStub 148 149 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 150 _klass_reg = klass_reg; 151 _length = length; 152 _result = result; 153 _info = new CodeEmitInfo(info); 154 } 155 156 157 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { 158 assert(__ rsp_offset() == 0, "frame size should be fixed"); 159 __ bind(_entry); 160 assert(_length->as_register() == r19, "length must in r19,"); 161 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 162 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id))); 163 ce->add_call_info_here(_info); 164 ce->verify_oop_map(_info); 165 assert(_result->as_register() == r0, "result must in r0"); 166 __ b(_continuation); 167 } 168 169 170 // Implementation of NewObjectArrayStub 171 172 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 173 _klass_reg = klass_reg; 174 _result = result; 175 _length = length; 176 _info = new CodeEmitInfo(info); 177 } 178 179 180 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { 181 assert(__ rsp_offset() == 0, "frame size should be fixed"); 182 __ bind(_entry); 183 assert(_length->as_register() == r19, "length must in r19,"); 184 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 185 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id))); 186 ce->add_call_info_here(_info); 187 ce->verify_oop_map(_info); 188 assert(_result->as_register() == r0, "result must in r0"); 189 __ b(_continuation); 190 } 191 // Implementation of MonitorAccessStubs 192 193 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info) 194 : MonitorAccessStub(obj_reg, lock_reg) 195 { 196 _info = new CodeEmitInfo(info); 197 } 198 199 200 void MonitorEnterStub::emit_code(LIR_Assembler* ce) { 201 assert(__ rsp_offset() == 0, "frame size should be fixed"); 202 __ bind(_entry); 203 ce->store_parameter(_obj_reg->as_register(), 1); 204 ce->store_parameter(_lock_reg->as_register(), 0); 205 Runtime1::StubID enter_id; 206 if (ce->compilation()->has_fpu_code()) { 207 enter_id = Runtime1::monitorenter_id; 208 } else { 209 enter_id = Runtime1::monitorenter_nofpu_id; 210 } 211 __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id))); 212 ce->add_call_info_here(_info); 213 ce->verify_oop_map(_info); 214 __ b(_continuation); 215 } 216 217 218 void MonitorExitStub::emit_code(LIR_Assembler* ce) { 219 __ bind(_entry); 220 if (_compute_lock) { 221 // lock_reg was destroyed by fast unlocking attempt => recompute it 222 ce->monitor_address(_monitor_ix, _lock_reg); 223 } 224 ce->store_parameter(_lock_reg->as_register(), 0); 225 // note: non-blocking leaf routine => no call info needed 226 Runtime1::StubID exit_id; 227 if (ce->compilation()->has_fpu_code()) { 228 exit_id = Runtime1::monitorexit_id; 229 } else { 230 exit_id = Runtime1::monitorexit_nofpu_id; 231 } 232 __ adr(lr, _continuation); 233 __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id))); 234 } 235 236 237 // Implementation of patching: 238 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes) 239 // - Replace original code with a call to the stub 240 // At Runtime: 241 // - call to stub, jump to runtime 242 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object) 243 // - in runtime: after initializing class, restore original code, reexecute instruction 244 245 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; 246 247 void PatchingStub::align_patch_site(MacroAssembler* masm) { 248 } 249 250 void PatchingStub::emit_code(LIR_Assembler* ce) { 251 assert(false, "AArch64 should not use C1 runtime patching"); 252 } 253 254 255 void DeoptimizeStub::emit_code(LIR_Assembler* ce) { 256 __ bind(_entry); 257 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id))); 258 ce->add_call_info_here(_info); 259 DEBUG_ONLY(__ should_not_reach_here()); 260 } 261 262 263 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) { 264 address a; 265 if (_info->deoptimize_on_exception()) { 266 // Deoptimize, do not throw the exception, because it is probably wrong to do it here. 267 a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 268 } else { 269 a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id); 270 } 271 272 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); 273 __ bind(_entry); 274 __ far_call(RuntimeAddress(a)); 275 ce->add_call_info_here(_info); 276 ce->verify_oop_map(_info); 277 debug_only(__ should_not_reach_here()); 278 } 279 280 281 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) { 282 assert(__ rsp_offset() == 0, "frame size should be fixed"); 283 284 __ bind(_entry); 285 // pass the object in a scratch register because all other registers 286 // must be preserved 287 if (_obj->is_cpu_register()) { 288 __ mov(rscratch1, _obj->as_register()); 289 } 290 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2); 291 ce->add_call_info_here(_info); 292 debug_only(__ should_not_reach_here()); 293 } 294 295 296 void ArrayCopyStub::emit_code(LIR_Assembler* ce) { 297 //---------------slow case: call to native----------------- 298 __ bind(_entry); 299 // Figure out where the args should go 300 // This should really convert the IntrinsicID to the Method* and signature 301 // but I don't know how to do that. 302 // 303 VMRegPair args[5]; 304 BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT}; 305 SharedRuntime::java_calling_convention(signature, args, 5, true); 306 307 // push parameters 308 // (src, src_pos, dest, destPos, length) 309 Register r[5]; 310 r[0] = src()->as_register(); 311 r[1] = src_pos()->as_register(); 312 r[2] = dst()->as_register(); 313 r[3] = dst_pos()->as_register(); 314 r[4] = length()->as_register(); 315 316 // next registers will get stored on the stack 317 for (int i = 0; i < 5 ; i++ ) { 318 VMReg r_1 = args[i].first(); 319 if (r_1->is_stack()) { 320 int st_off = r_1->reg2stack() * wordSize; 321 __ str (r[i], Address(sp, st_off)); 322 } else { 323 assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg "); 324 } 325 } 326 327 ce->align_call(lir_static_call); 328 329 ce->emit_static_call_stub(); 330 Address resolve(SharedRuntime::get_resolve_static_call_stub(), 331 relocInfo::static_call_type); 332 __ trampoline_call(resolve); 333 ce->add_call_info_here(info()); 334 335 #ifndef PRODUCT 336 __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt)); 337 __ incrementw(Address(rscratch2)); 338 #endif 339 340 __ b(_continuation); 341 } 342 343 344 ///////////////////////////////////////////////////////////////////////////// 345 #if INCLUDE_ALL_GCS 346 347 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) { 348 // At this point we know that marking is in progress. 349 // If do_load() is true then we have to emit the 350 // load of the previous value; otherwise it has already 351 // been loaded into _pre_val. 352 353 __ bind(_entry); 354 assert(pre_val()->is_register(), "Precondition."); 355 356 Register pre_val_reg = pre_val()->as_register(); 357 358 if (do_load()) { 359 ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false /*wide*/, false /*unaligned*/); 360 } 361 __ cbz(pre_val_reg, _continuation); 362 ce->store_parameter(pre_val()->as_register(), 0); 363 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_pre_barrier_slow_id))); 364 __ b(_continuation); 365 } 366 367 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) { 368 __ bind(_entry); 369 assert(addr()->is_register(), "Precondition."); 370 assert(new_val()->is_register(), "Precondition."); 371 Register new_val_reg = new_val()->as_register(); 372 __ cbz(new_val_reg, _continuation); 373 ce->store_parameter(addr()->as_pointer_register(), 0); 374 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::g1_post_barrier_slow_id))); 375 __ b(_continuation); 376 } 377 378 #endif // INCLUDE_ALL_GCS 379 ///////////////////////////////////////////////////////////////////////////// 380 381 #undef __