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, 52 bool throw_index_out_of_bounds_exception) 53 : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception) 54 , _index(index) 55 { 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 stub_id = Runtime1::throw_index_exception_id; 79 } else { 80 stub_id = Runtime1::throw_range_check_failed_id; 81 } 82 __ far_call(RuntimeAddress(Runtime1::entry_for(stub_id)), NULL, rscratch2); 83 ce->add_call_info_here(_info); 84 ce->verify_oop_map(_info); 85 debug_only(__ should_not_reach_here()); 86 } 87 88 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) { 89 _info = new CodeEmitInfo(info); 90 } 91 92 void PredicateFailedStub::emit_code(LIR_Assembler* ce) { 93 __ bind(_entry); 94 address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id); 95 __ far_call(RuntimeAddress(a)); 96 ce->add_call_info_here(_info); 97 ce->verify_oop_map(_info); 98 debug_only(__ should_not_reach_here()); 99 } 100 101 void DivByZeroStub::emit_code(LIR_Assembler* ce) { 102 if (_offset != -1) { 103 ce->compilation()->implicit_exception_table()->append(_offset, __ offset()); 104 } 105 __ bind(_entry); 106 __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type)); 107 ce->add_call_info_here(_info); 108 ce->verify_oop_map(_info); 109 #ifdef ASSERT 110 __ should_not_reach_here(); 111 #endif 112 } 113 114 115 116 // Implementation of NewInstanceStub 117 118 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) { 119 _result = result; 120 _klass = klass; 121 _klass_reg = klass_reg; 122 _info = new CodeEmitInfo(info); 123 assert(stub_id == Runtime1::new_instance_id || 124 stub_id == Runtime1::fast_new_instance_id || 125 stub_id == Runtime1::fast_new_instance_init_check_id, 126 "need new_instance id"); 127 _stub_id = stub_id; 128 } 129 130 131 132 void NewInstanceStub::emit_code(LIR_Assembler* ce) { 133 assert(__ rsp_offset() == 0, "frame size should be fixed"); 134 __ bind(_entry); 135 __ mov(r3, _klass_reg->as_register()); 136 __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id))); 137 ce->add_call_info_here(_info); 138 ce->verify_oop_map(_info); 139 assert(_result->as_register() == r0, "result must in r0,"); 140 __ b(_continuation); 141 } 142 143 144 // Implementation of NewTypeArrayStub 145 146 // Implementation of NewTypeArrayStub 147 148 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 149 _klass_reg = klass_reg; 150 _length = length; 151 _result = result; 152 _info = new CodeEmitInfo(info); 153 } 154 155 156 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) { 157 assert(__ rsp_offset() == 0, "frame size should be fixed"); 158 __ bind(_entry); 159 assert(_length->as_register() == r19, "length must in r19,"); 160 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 161 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id))); 162 ce->add_call_info_here(_info); 163 ce->verify_oop_map(_info); 164 assert(_result->as_register() == r0, "result must in r0"); 165 __ b(_continuation); 166 } 167 168 169 // Implementation of NewObjectArrayStub 170 171 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) { 172 _klass_reg = klass_reg; 173 _result = result; 174 _length = length; 175 _info = new CodeEmitInfo(info); 176 } 177 178 179 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) { 180 assert(__ rsp_offset() == 0, "frame size should be fixed"); 181 __ bind(_entry); 182 assert(_length->as_register() == r19, "length must in r19,"); 183 assert(_klass_reg->as_register() == r3, "klass_reg must in r3"); 184 __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id))); 185 ce->add_call_info_here(_info); 186 ce->verify_oop_map(_info); 187 assert(_result->as_register() == r0, "result must in r0"); 188 __ b(_continuation); 189 } 190 // Implementation of MonitorAccessStubs 191 192 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info) 193 : MonitorAccessStub(obj_reg, lock_reg) 194 { 195 _info = new CodeEmitInfo(info); 196 } 197 198 199 void MonitorEnterStub::emit_code(LIR_Assembler* ce) { 200 assert(__ rsp_offset() == 0, "frame size should be fixed"); 201 __ bind(_entry); 202 ce->store_parameter(_obj_reg->as_register(), 1); 203 ce->store_parameter(_lock_reg->as_register(), 0); 204 Runtime1::StubID enter_id; 205 if (ce->compilation()->has_fpu_code()) { 206 enter_id = Runtime1::monitorenter_id; 207 } else { 208 enter_id = Runtime1::monitorenter_nofpu_id; 209 } 210 __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id))); 211 ce->add_call_info_here(_info); 212 ce->verify_oop_map(_info); 213 __ b(_continuation); 214 } 215 216 217 void MonitorExitStub::emit_code(LIR_Assembler* ce) { 218 __ bind(_entry); 219 if (_compute_lock) { 220 // lock_reg was destroyed by fast unlocking attempt => recompute it 221 ce->monitor_address(_monitor_ix, _lock_reg); 222 } 223 ce->store_parameter(_lock_reg->as_register(), 0); 224 // note: non-blocking leaf routine => no call info needed 225 Runtime1::StubID exit_id; 226 if (ce->compilation()->has_fpu_code()) { 227 exit_id = Runtime1::monitorexit_id; 228 } else { 229 exit_id = Runtime1::monitorexit_nofpu_id; 230 } 231 __ adr(lr, _continuation); 232 __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id))); 233 } 234 235 236 // Implementation of patching: 237 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes) 238 // - Replace original code with a call to the stub 239 // At Runtime: 240 // - call to stub, jump to runtime 241 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object) 242 // - in runtime: after initializing class, restore original code, reexecute instruction 243 244 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size; 245 246 void PatchingStub::align_patch_site(MacroAssembler* masm) { 247 } 248 249 void PatchingStub::emit_code(LIR_Assembler* ce) { 250 assert(false, "AArch64 should not use C1 runtime patching"); 251 } 252 253 254 void DeoptimizeStub::emit_code(LIR_Assembler* ce) { 255 __ bind(_entry); 256 ce->store_parameter(_trap_request, 0); 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 if (ce->compilation()->bailed_out()) { 331 return; // CodeCache is full 332 } 333 Address resolve(SharedRuntime::get_resolve_static_call_stub(), 334 relocInfo::static_call_type); 335 address call = __ trampoline_call(resolve); 336 if (call == NULL) { 337 ce->bailout("trampoline stub overflow"); 338 return; 339 } 340 ce->add_call_info_here(info()); 341 342 #ifndef PRODUCT 343 __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt)); 344 __ incrementw(Address(rscratch2)); 345 #endif 346 347 __ b(_continuation); 348 } 349 350 #undef __