rev 53735 : AArch64 support for ValueTypes

   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 "asm/macroAssembler.inline.hpp"
  28 #include "c1/c1_CodeStubs.hpp"
  29 #include "c1/c1_FrameMap.hpp"
  30 #include "c1/c1_LIRAssembler.hpp"
  31 #include "c1/c1_MacroAssembler.hpp"
  32 #include "c1/c1_Runtime1.hpp"
  33 #include "nativeInst_aarch64.hpp"
  34 #include "runtime/sharedRuntime.hpp"
  35 #include "vmreg_aarch64.inline.hpp"
  36 
  37 
  38 #define __ ce->masm()->
  39 
  40 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
  41   __ bind(_entry);
  42   Metadata *m = _method->as_constant_ptr()->as_metadata();
  43   __ mov_metadata(rscratch1, m);
  44   ce->store_parameter(rscratch1, 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, LIR_Opr array)
  53   : _index(index), _array(array), _throw_index_out_of_bounds_exception(false) {
  54   assert(info != NULL, "must have info");
  55   _info = new CodeEmitInfo(info);
  56 }
  57 
  58 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index)
  59   : _index(index), _array(NULL), _throw_index_out_of_bounds_exception(true) {
  60   assert(info != NULL, "must have info");
  61   _info = new CodeEmitInfo(info);
  62 }
  63 
  64 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
  65   __ bind(_entry);
  66   if (_info->deoptimize_on_exception()) {
  67     address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
  68     __ far_call(RuntimeAddress(a));
  69     ce->add_call_info_here(_info);
  70     ce->verify_oop_map(_info);
  71     debug_only(__ should_not_reach_here());
  72     return;
  73   }
  74 
  75   if (_index->is_cpu_register()) {
  76     __ mov(rscratch1, _index->as_register());
  77   } else {
  78     __ mov(rscratch1, _index->as_jint());
  79   }
  80   Runtime1::StubID stub_id;
  81   if (_throw_index_out_of_bounds_exception) {
  82     stub_id = Runtime1::throw_index_exception_id;
  83   } else {
  84     assert(_array != NULL, "sanity");
  85     __ mov(rscratch2, _array->as_pointer_register());
  86     stub_id = Runtime1::throw_range_check_failed_id;
  87   }
  88   __ lea(lr, RuntimeAddress(Runtime1::entry_for(stub_id)));
  89   __ blr(lr);
  90   ce->add_call_info_here(_info);
  91   ce->verify_oop_map(_info);
  92   debug_only(__ should_not_reach_here());
  93 }
  94 
  95 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
  96   _info = new CodeEmitInfo(info);
  97 }
  98 
  99 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
 100   __ bind(_entry);
 101   address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
 102   __ far_call(RuntimeAddress(a));
 103   ce->add_call_info_here(_info);
 104   ce->verify_oop_map(_info);
 105   debug_only(__ should_not_reach_here());
 106 }
 107 
 108 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
 109   if (_offset != -1) {
 110     ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
 111   }
 112   __ bind(_entry);
 113   __ far_call(Address(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type));
 114   ce->add_call_info_here(_info);
 115   ce->verify_oop_map(_info);
 116 #ifdef ASSERT
 117   __ should_not_reach_here();
 118 #endif
 119 }
 120 
 121 
 122 
 123 // Implementation of NewInstanceStub
 124 
 125 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
 126   _result = result;
 127   _klass = klass;
 128   _klass_reg = klass_reg;
 129   _info = new CodeEmitInfo(info);
 130   assert(stub_id == Runtime1::new_instance_id                 ||
 131          stub_id == Runtime1::fast_new_instance_id            ||
 132          stub_id == Runtime1::fast_new_instance_init_check_id,
 133          "need new_instance id");
 134   _stub_id   = stub_id;
 135 }
 136 
 137 
 138 
 139 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
 140   assert(__ rsp_offset() == 0, "frame size should be fixed");
 141   __ bind(_entry);
 142   __ mov(r3, _klass_reg->as_register());
 143   __ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
 144   ce->add_call_info_here(_info);
 145   ce->verify_oop_map(_info);
 146   assert(_result->as_register() == r0, "result must in r0,");
 147   __ b(_continuation);
 148 }
 149 
 150 
 151 // Implementation of NewTypeArrayStub
 152 
 153 // Implementation of NewTypeArrayStub
 154 
 155 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
 156   _klass_reg = klass_reg;
 157   _length = length;
 158   _result = result;
 159   _info = new CodeEmitInfo(info);
 160 }
 161 
 162 
 163 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
 164   assert(__ rsp_offset() == 0, "frame size should be fixed");
 165   __ bind(_entry);
 166   assert(_length->as_register() == r19, "length must in r19,");
 167   assert(_klass_reg->as_register() == r3, "klass_reg must in r3");
 168   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
 169   ce->add_call_info_here(_info);
 170   ce->verify_oop_map(_info);
 171   assert(_result->as_register() == r0, "result must in r0");
 172   __ b(_continuation);
 173 }
 174 
 175 
 176 // Implementation of NewObjectArrayStub
 177 
 178 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
 179   _klass_reg = klass_reg;
 180   _result = result;
 181   _length = length;
 182   _info = new CodeEmitInfo(info);

 183 }
 184 
 185 
 186 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
 187   assert(__ rsp_offset() == 0, "frame size should be fixed");
 188   __ bind(_entry);
 189   assert(_length->as_register() == r19, "length must in r19,");
 190   assert(_klass_reg->as_register() == r3, "klass_reg must in r3");




 191   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));


 192   ce->add_call_info_here(_info);
 193   ce->verify_oop_map(_info);
 194   assert(_result->as_register() == r0, "result must in r0");
 195   __ b(_continuation);
 196 }
 197 // Implementation of MonitorAccessStubs
 198 
 199 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
 200 : MonitorAccessStub(obj_reg, lock_reg)
 201 {
 202   _info = new CodeEmitInfo(info);





 203 }
 204 
 205 
 206 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
 207   assert(__ rsp_offset() == 0, "frame size should be fixed");
 208   __ bind(_entry);









 209   ce->store_parameter(_obj_reg->as_register(),  1);
 210   ce->store_parameter(_lock_reg->as_register(), 0);
 211   Runtime1::StubID enter_id;
 212   if (ce->compilation()->has_fpu_code()) {
 213     enter_id = Runtime1::monitorenter_id;
 214   } else {
 215     enter_id = Runtime1::monitorenter_nofpu_id;
 216   }
 217   __ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));
 218   ce->add_call_info_here(_info);
 219   ce->verify_oop_map(_info);
 220   __ b(_continuation);
 221 }
 222 
 223 
 224 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
 225   __ bind(_entry);
 226   if (_compute_lock) {
 227     // lock_reg was destroyed by fast unlocking attempt => recompute it
 228     ce->monitor_address(_monitor_ix, _lock_reg);
 229   }
 230   ce->store_parameter(_lock_reg->as_register(), 0);
 231   // note: non-blocking leaf routine => no call info needed
 232   Runtime1::StubID exit_id;
 233   if (ce->compilation()->has_fpu_code()) {
 234     exit_id = Runtime1::monitorexit_id;
 235   } else {
 236     exit_id = Runtime1::monitorexit_nofpu_id;
 237   }
 238   __ adr(lr, _continuation);
 239   __ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));
 240 }
 241 
 242 
 243 // Implementation of patching:
 244 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
 245 // - Replace original code with a call to the stub
 246 // At Runtime:
 247 // - call to stub, jump to runtime
 248 // - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
 249 // - in runtime: after initializing class, restore original code, reexecute instruction
 250 
 251 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
 252 
 253 void PatchingStub::align_patch_site(MacroAssembler* masm) {
 254 }
 255 
 256 void PatchingStub::emit_code(LIR_Assembler* ce) {
 257   assert(false, "AArch64 should not use C1 runtime patching");
 258 }
 259 
 260 
 261 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
 262   __ bind(_entry);
 263   ce->store_parameter(_trap_request, 0);
 264   __ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
 265   ce->add_call_info_here(_info);
 266   DEBUG_ONLY(__ should_not_reach_here());
 267 }
 268 
 269 
 270 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
 271   address a;
 272   if (_info->deoptimize_on_exception()) {
 273     // Deoptimize, do not throw the exception, because it is probably wrong to do it here.
 274     a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
 275   } else {
 276     a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
 277   }
 278 
 279   ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
 280   __ bind(_entry);
 281   __ far_call(RuntimeAddress(a));
 282   ce->add_call_info_here(_info);
 283   ce->verify_oop_map(_info);
 284   debug_only(__ should_not_reach_here());
 285 }
 286 
 287 
 288 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
 289   assert(__ rsp_offset() == 0, "frame size should be fixed");
 290 
 291   __ bind(_entry);
 292   // pass the object in a scratch register because all other registers
 293   // must be preserved
 294   if (_obj->is_cpu_register()) {
 295     __ mov(rscratch1, _obj->as_register());
 296   }
 297   __ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), NULL, rscratch2);
 298   ce->add_call_info_here(_info);
 299   debug_only(__ should_not_reach_here());
 300 }
 301 
 302 
 303 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
 304   //---------------slow case: call to native-----------------
 305   __ bind(_entry);
 306   // Figure out where the args should go
 307   // This should really convert the IntrinsicID to the Method* and signature
 308   // but I don't know how to do that.
 309   //
 310   VMRegPair args[5];
 311   BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
 312   SharedRuntime::java_calling_convention(signature, args, 5, true);
 313 
 314   // push parameters
 315   // (src, src_pos, dest, destPos, length)
 316   Register r[5];
 317   r[0] = src()->as_register();
 318   r[1] = src_pos()->as_register();
 319   r[2] = dst()->as_register();
 320   r[3] = dst_pos()->as_register();
 321   r[4] = length()->as_register();
 322 
 323   // next registers will get stored on the stack
 324   for (int i = 0; i < 5 ; i++ ) {
 325     VMReg r_1 = args[i].first();
 326     if (r_1->is_stack()) {
 327       int st_off = r_1->reg2stack() * wordSize;
 328       __ str (r[i], Address(sp, st_off));
 329     } else {
 330       assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
 331     }
 332   }
 333 
 334   ce->align_call(lir_static_call);
 335 
 336   ce->emit_static_call_stub();
 337   if (ce->compilation()->bailed_out()) {
 338     return; // CodeCache is full
 339   }
 340   Address resolve(SharedRuntime::get_resolve_static_call_stub(),
 341                   relocInfo::static_call_type);
 342   address call = __ trampoline_call(resolve);
 343   if (call == NULL) {
 344     ce->bailout("trampoline stub overflow");
 345     return;
 346   }
 347   ce->add_call_info_here(info());
 348 
 349 #ifndef PRODUCT
 350   __ lea(rscratch2, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
 351   __ incrementw(Address(rscratch2));
 352 #endif
 353 
 354   __ b(_continuation);
 355 }
 356 
 357 #undef __
--- EOF ---