hotspot/src/cpu/sparc/vm/c1_CodeStubs_sparc.cpp - platform/libcore - Git at Google

 /*
  * Copyright 1999-2009 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */

 #include "incls/_precompiled.incl"
 #include "incls/_c1_CodeStubs_sparc.cpp.incl"

 #define __ ce->masm()->

 RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,
                                bool throw_index_out_of_bounds_exception)
   : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)
   , _index(index)
 {
   _info = new CodeEmitInfo(info);
 }


 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);

   if (_index->is_register()) {
     __ mov(_index->as_register(), G4);
   } else {
     __ set(_index->as_jint(), G4);
   }
   if (_throw_index_out_of_bounds_exception) {
     __ call(Runtime1::entry_for(Runtime1::throw_index_exception_id), relocInfo::runtime_call_type);
   } else {
     __ call(Runtime1::entry_for(Runtime1::throw_range_check_failed_id), relocInfo::runtime_call_type);
   }
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
 #ifdef ASSERT
   __ should_not_reach_here();
 #endif
 }

 #ifdef TIERED

 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   __ set(_bci, G4);
   __ call(Runtime1::entry_for(Runtime1::counter_overflow_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);

   __ br(Assembler::always, true, Assembler::pt, _continuation);
   __ delayed()->nop();
 }

 #endif // TIERED

 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
   if (_offset != -1) {
     ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
   }
   __ bind(_entry);
   __ call(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
 #ifdef ASSERT
   __ should_not_reach_here();
 #endif
 }


 void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
   ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
   __ bind(_entry);
   __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id),
           relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
 #ifdef ASSERT
   __ should_not_reach_here();
 #endif
 }


 // Implementation of SimpleExceptionStub
 // Note: %g1 and %g3 are already in use
 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   __ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type);

   if (_obj->is_valid()) {
     __ delayed()->mov(_obj->as_register(), G4); // _obj contains the optional argument to the stub
   } else {
     __ delayed()->mov(G0, G4);
   }
   ce->add_call_info_here(_info);
 #ifdef ASSERT
   __ should_not_reach_here();
 #endif
 }


 // Implementation of ArrayStoreExceptionStub

 ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info):
   _info(info) {
 }


 void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   __ call(Runtime1::entry_for(Runtime1::throw_array_store_exception_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
 #ifdef ASSERT
   __ should_not_reach_here();
 #endif
 }


 // Implementation of NewInstanceStub

 NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
   _result = result;
   _klass = klass;
   _klass_reg = klass_reg;
   _info = new CodeEmitInfo(info);
   assert(stub_id == Runtime1::new_instance_id                 ||
          stub_id == Runtime1::fast_new_instance_id            ||
          stub_id == Runtime1::fast_new_instance_init_check_id,
          "need new_instance id");
   _stub_id   = stub_id;
 }


 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   __ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type);
   __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   __ br(Assembler::always, false, Assembler::pt, _continuation);
   __ delayed()->mov_or_nop(O0, _result->as_register());
 }


 // Implementation of NewTypeArrayStub
 NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
   _klass_reg = klass_reg;
   _length = length;
   _result = result;
   _info = new CodeEmitInfo(info);
 }


 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);

   __ mov(_length->as_register(), G4);
   __ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type);
   __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   __ br(Assembler::always, false, Assembler::pt, _continuation);
   __ delayed()->mov_or_nop(O0, _result->as_register());
 }


 // Implementation of NewObjectArrayStub

 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
   _klass_reg = klass_reg;
   _length = length;
   _result = result;
   _info = new CodeEmitInfo(info);
 }


 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);

   __ mov(_length->as_register(), G4);
   __ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type);
   __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   __ br(Assembler::always, false, Assembler::pt, _continuation);
   __ delayed()->mov_or_nop(O0, _result->as_register());
 }


 // Implementation of MonitorAccessStubs
 MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
   : MonitorAccessStub(obj_reg, lock_reg) {
   _info = new CodeEmitInfo(info);
 }


 void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   __ mov(_obj_reg->as_register(), G4);
   if (ce->compilation()->has_fpu_code()) {
     __ call(Runtime1::entry_for(Runtime1::monitorenter_id), relocInfo::runtime_call_type);
   } else {
     __ call(Runtime1::entry_for(Runtime1::monitorenter_nofpu_id), relocInfo::runtime_call_type);
   }
   __ delayed()->mov_or_nop(_lock_reg->as_register(), G5);
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   __ br(Assembler::always, true, Assembler::pt, _continuation);
   __ delayed()->nop();
 }


 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   if (_compute_lock) {
     ce->monitor_address(_monitor_ix, _lock_reg);
   }
   if (ce->compilation()->has_fpu_code()) {
     __ call(Runtime1::entry_for(Runtime1::monitorexit_id), relocInfo::runtime_call_type);
   } else {
     __ call(Runtime1::entry_for(Runtime1::monitorexit_nofpu_id), relocInfo::runtime_call_type);
   }

   __ delayed()->mov_or_nop(_lock_reg->as_register(), G4);
   __ br(Assembler::always, true, Assembler::pt, _continuation);
   __ delayed()->nop();
 }

 // Implementation of patching:
 // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
 // - Replace original code with a call to the stub
 // At Runtime:
 // - call to stub, jump to runtime
 // - in runtime: preserve all registers (especially objects, i.e., source and destination object)
 // - in runtime: after initializing class, restore original code, reexecute instruction

 int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;

 void PatchingStub::align_patch_site(MacroAssembler* ) {
   // patch sites on sparc are always properly aligned.
 }

 void PatchingStub::emit_code(LIR_Assembler* ce) {
   // copy original code here
   assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF,
          "not enough room for call");
   assert((_bytes_to_copy & 0x3) == 0, "must copy a multiple of four bytes");

   Label call_patch;

   int being_initialized_entry = __ offset();

   if (_id == load_klass_id) {
     // produce a copy of the load klass instruction for use by the being initialized case
 #ifdef ASSERT
     address start = __ pc();
 #endif
     AddressLiteral addrlit(NULL, oop_Relocation::spec(_oop_index));
     __ patchable_set(addrlit, _obj);

 #ifdef ASSERT
     for (int i = 0; i < _bytes_to_copy; i++) {
       address ptr = (address)(_pc_start + i);
       int a_byte = (*ptr) & 0xFF;
       assert(a_byte == *start++, "should be the same code");
     }
 #endif
   } else {
     // make a copy the code which is going to be patched.
     for (int i = 0; i < _bytes_to_copy; i++) {
       address ptr = (address)(_pc_start + i);
       int a_byte = (*ptr) & 0xFF;
       __ a_byte (a_byte);
     }
   }

   address end_of_patch = __ pc();
   int bytes_to_skip = 0;
   if (_id == load_klass_id) {
     int offset = __ offset();
     if (CommentedAssembly) {
       __ block_comment(" being_initialized check");
     }

     // static field accesses have special semantics while the class
     // initializer is being run so we emit a test which can be used to
     // check that this code is being executed by the initializing
     // thread.
     assert(_obj != noreg, "must be a valid register");
     assert(_oop_index >= 0, "must have oop index");
     __ ld_ptr(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc), G3);
     __ cmp(G2_thread, G3);
     __ br(Assembler::notEqual, false, Assembler::pn, call_patch);
     __ delayed()->nop();

     // load_klass patches may execute the patched code before it's
     // copied back into place so we need to jump back into the main
     // code of the nmethod to continue execution.
     __ br(Assembler::always, false, Assembler::pt, _patch_site_continuation);
     __ delayed()->nop();

     // make sure this extra code gets skipped
     bytes_to_skip += __ offset() - offset;
   }

   // Now emit the patch record telling the runtime how to find the
   // pieces of the patch.  We only need 3 bytes but it has to be
   // aligned as an instruction so emit 4 bytes.
   int sizeof_patch_record = 4;
   bytes_to_skip += sizeof_patch_record;

   // emit the offsets needed to find the code to patch
   int being_initialized_entry_offset = __ offset() - being_initialized_entry + sizeof_patch_record;

   // Emit the patch record.  We need to emit a full word, so emit an extra empty byte
   __ a_byte(0);
   __ a_byte(being_initialized_entry_offset);
   __ a_byte(bytes_to_skip);
   __ a_byte(_bytes_to_copy);
   address patch_info_pc = __ pc();
   assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");

   address entry = __ pc();
   NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
   address target = NULL;
   switch (_id) {
     case access_field_id:  target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
     case load_klass_id:    target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break;
     default: ShouldNotReachHere();
   }
   __ bind(call_patch);

   if (CommentedAssembly) {
     __ block_comment("patch entry point");
   }
   __ call(target, relocInfo::runtime_call_type);
   __ delayed()->nop();
   assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
   ce->add_call_info_here(_info);
   __ br(Assembler::always, false, Assembler::pt, _patch_site_entry);
   __ delayed()->nop();
   if (_id == load_klass_id) {
     CodeSection* cs = __ code_section();
     address pc = (address)_pc_start;
     RelocIterator iter(cs, pc, pc + 1);
     relocInfo::change_reloc_info_for_address(&iter, (address) pc, relocInfo::oop_type, relocInfo::none);

     pc = (address)(_pc_start + NativeMovConstReg::add_offset);
     RelocIterator iter2(cs, pc, pc+1);
     relocInfo::change_reloc_info_for_address(&iter2, (address) pc, relocInfo::oop_type, relocInfo::none);
   }

 }

 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
   //---------------slow case: call to native-----------------
   __ bind(_entry);
   __ mov(src()->as_register(),     O0);
   __ mov(src_pos()->as_register(), O1);
   __ mov(dst()->as_register(),     O2);
   __ mov(dst_pos()->as_register(), O3);
   __ mov(length()->as_register(),  O4);

   ce->emit_static_call_stub();

   __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(info());
   ce->verify_oop_map(info());

 #ifndef PRODUCT
   __ set((intptr_t)&Runtime1::_arraycopy_slowcase_cnt, O0);
   __ ld(O0, 0, O1);
   __ inc(O1);
   __ st(O1, 0, O0);
 #endif

   __ br(Assembler::always, false, Assembler::pt, _continuation);
   __ delayed()->nop();
 }


 ///////////////////////////////////////////////////////////////////////////////////
 #ifndef SERIALGC

 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);

   assert(pre_val()->is_register(), "Precondition.");

   Register pre_val_reg = pre_val()->as_register();

   ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false);
   __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
                     pre_val_reg, _continuation);
   __ delayed()->nop();

   __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_pre_barrier_slow_id));
   __ delayed()->mov(pre_val_reg, G4);
   __ br(Assembler::always, false, Assembler::pt, _continuation);
   __ delayed()->nop();

 }

 jbyte* G1PostBarrierStub::_byte_map_base = NULL;

 jbyte* G1PostBarrierStub::byte_map_base_slow() {
   BarrierSet* bs = Universe::heap()->barrier_set();
   assert(bs->is_a(BarrierSet::G1SATBCTLogging),
          "Must be if we're using this.");
   return ((G1SATBCardTableModRefBS*)bs)->byte_map_base;
 }

 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);

   assert(addr()->is_register(), "Precondition.");
   assert(new_val()->is_register(), "Precondition.");
   Register addr_reg = addr()->as_pointer_register();
   Register new_val_reg = new_val()->as_register();
   __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
                     new_val_reg, _continuation);
   __ delayed()->nop();

   __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_post_barrier_slow_id));
   __ delayed()->mov(addr_reg, G4);
   __ br(Assembler::always, false, Assembler::pt, _continuation);
   __ delayed()->nop();
 }

 #endif // SERIALGC
 ///////////////////////////////////////////////////////////////////////////////////

 #undef __
	/*
	* Copyright 1999-2009 Sun Microsystems, Inc. All Rights Reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	* CA 95054 USA or visit www.sun.com if you need additional information or
	* have any questions.
	*
	*/

	#include "incls/_precompiled.incl"
	#include "incls/_c1_CodeStubs_sparc.cpp.incl"

	#define __ ce->masm()->

	RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,
	bool throw_index_out_of_bounds_exception)
	: _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)
	, _index(index)
	{
	_info = new CodeEmitInfo(info);
	}


	void RangeCheckStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);

	if (_index->is_register()) {
	__ mov(_index->as_register(), G4);
	} else {
	__ set(_index->as_jint(), G4);
	}
	if (_throw_index_out_of_bounds_exception) {
	__ call(Runtime1::entry_for(Runtime1::throw_index_exception_id), relocInfo::runtime_call_type);
	} else {
	__ call(Runtime1::entry_for(Runtime1::throw_range_check_failed_id), relocInfo::runtime_call_type);
	}
	__ delayed()->nop();
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	#ifdef ASSERT
	__ should_not_reach_here();
	#endif
	}

	#ifdef TIERED

	void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);
	__ set(_bci, G4);
	__ call(Runtime1::entry_for(Runtime1::counter_overflow_id), relocInfo::runtime_call_type);
	__ delayed()->nop();
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);

	__ br(Assembler::always, true, Assembler::pt, _continuation);
	__ delayed()->nop();
	}

	#endif // TIERED

	void DivByZeroStub::emit_code(LIR_Assembler* ce) {
	if (_offset != -1) {
	ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
	}
	__ bind(_entry);
	__ call(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type);
	__ delayed()->nop();
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	#ifdef ASSERT
	__ should_not_reach_here();
	#endif
	}


	void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
	ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
	__ bind(_entry);
	__ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id),
	relocInfo::runtime_call_type);
	__ delayed()->nop();
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	#ifdef ASSERT
	__ should_not_reach_here();
	#endif
	}


	// Implementation of SimpleExceptionStub
	// Note: %g1 and %g3 are already in use
	void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);
	__ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type);

	if (_obj->is_valid()) {
	__ delayed()->mov(_obj->as_register(), G4); // _obj contains the optional argument to the stub
	} else {
	__ delayed()->mov(G0, G4);
	}
	ce->add_call_info_here(_info);
	#ifdef ASSERT
	__ should_not_reach_here();
	#endif
	}


	// Implementation of ArrayStoreExceptionStub

	ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info):
	_info(info) {
	}


	void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);
	__ call(Runtime1::entry_for(Runtime1::throw_array_store_exception_id), relocInfo::runtime_call_type);
	__ delayed()->nop();
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	#ifdef ASSERT
	__ should_not_reach_here();
	#endif
	}




	// Implementation of NewInstanceStub

	NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
	_result = result;
	_klass = klass;
	_klass_reg = klass_reg;
	_info = new CodeEmitInfo(info);
	assert(stub_id == Runtime1::new_instance_id \|\|
	stub_id == Runtime1::fast_new_instance_id \|\|
	stub_id == Runtime1::fast_new_instance_init_check_id,
	"need new_instance id");
	_stub_id = stub_id;
	}


	void NewInstanceStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);
	__ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type);
	__ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	__ br(Assembler::always, false, Assembler::pt, _continuation);
	__ delayed()->mov_or_nop(O0, _result->as_register());
	}


	// Implementation of NewTypeArrayStub
	NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
	_klass_reg = klass_reg;
	_length = length;
	_result = result;
	_info = new CodeEmitInfo(info);
	}


	void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);

	__ mov(_length->as_register(), G4);
	__ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type);
	__ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	__ br(Assembler::always, false, Assembler::pt, _continuation);
	__ delayed()->mov_or_nop(O0, _result->as_register());
	}


	// Implementation of NewObjectArrayStub

	NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
	_klass_reg = klass_reg;
	_length = length;
	_result = result;
	_info = new CodeEmitInfo(info);
	}


	void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);

	__ mov(_length->as_register(), G4);
	__ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type);
	__ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	__ br(Assembler::always, false, Assembler::pt, _continuation);
	__ delayed()->mov_or_nop(O0, _result->as_register());
	}


	// Implementation of MonitorAccessStubs
	MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
	: MonitorAccessStub(obj_reg, lock_reg) {
	_info = new CodeEmitInfo(info);
	}


	void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);
	__ mov(_obj_reg->as_register(), G4);
	if (ce->compilation()->has_fpu_code()) {
	__ call(Runtime1::entry_for(Runtime1::monitorenter_id), relocInfo::runtime_call_type);
	} else {
	__ call(Runtime1::entry_for(Runtime1::monitorenter_nofpu_id), relocInfo::runtime_call_type);
	}
	__ delayed()->mov_or_nop(_lock_reg->as_register(), G5);
	ce->add_call_info_here(_info);
	ce->verify_oop_map(_info);
	__ br(Assembler::always, true, Assembler::pt, _continuation);
	__ delayed()->nop();
	}


	void MonitorExitStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);
	if (_compute_lock) {
	ce->monitor_address(_monitor_ix, _lock_reg);
	}
	if (ce->compilation()->has_fpu_code()) {
	__ call(Runtime1::entry_for(Runtime1::monitorexit_id), relocInfo::runtime_call_type);
	} else {
	__ call(Runtime1::entry_for(Runtime1::monitorexit_nofpu_id), relocInfo::runtime_call_type);
	}

	__ delayed()->mov_or_nop(_lock_reg->as_register(), G4);
	__ br(Assembler::always, true, Assembler::pt, _continuation);
	__ delayed()->nop();
	}

	// Implementation of patching:
	// - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
	// - Replace original code with a call to the stub
	// At Runtime:
	// - call to stub, jump to runtime
	// - in runtime: preserve all registers (especially objects, i.e., source and destination object)
	// - in runtime: after initializing class, restore original code, reexecute instruction

	int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;

	void PatchingStub::align_patch_site(MacroAssembler* ) {
	// patch sites on sparc are always properly aligned.
	}

	void PatchingStub::emit_code(LIR_Assembler* ce) {
	// copy original code here
	assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF,
	"not enough room for call");
	assert((_bytes_to_copy & 0x3) == 0, "must copy a multiple of four bytes");

	Label call_patch;

	int being_initialized_entry = __ offset();

	if (_id == load_klass_id) {
	// produce a copy of the load klass instruction for use by the being initialized case
	#ifdef ASSERT
	address start = __ pc();
	#endif
	AddressLiteral addrlit(NULL, oop_Relocation::spec(_oop_index));
	__ patchable_set(addrlit, _obj);

	#ifdef ASSERT
	for (int i = 0; i < _bytes_to_copy; i++) {
	address ptr = (address)(_pc_start + i);
	int a_byte = (*ptr) & 0xFF;
	assert(a_byte == *start++, "should be the same code");
	}
	#endif
	} else {
	// make a copy the code which is going to be patched.
	for (int i = 0; i < _bytes_to_copy; i++) {
	address ptr = (address)(_pc_start + i);
	int a_byte = (*ptr) & 0xFF;
	__ a_byte (a_byte);
	}
	}

	address end_of_patch = __ pc();
	int bytes_to_skip = 0;
	if (_id == load_klass_id) {
	int offset = __ offset();
	if (CommentedAssembly) {
	__ block_comment(" being_initialized check");
	}

	// static field accesses have special semantics while the class
	// initializer is being run so we emit a test which can be used to
	// check that this code is being executed by the initializing
	// thread.
	assert(_obj != noreg, "must be a valid register");
	assert(_oop_index >= 0, "must have oop index");
	__ ld_ptr(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc), G3);
	__ cmp(G2_thread, G3);
	__ br(Assembler::notEqual, false, Assembler::pn, call_patch);
	__ delayed()->nop();

	// load_klass patches may execute the patched code before it's
	// copied back into place so we need to jump back into the main
	// code of the nmethod to continue execution.
	__ br(Assembler::always, false, Assembler::pt, _patch_site_continuation);
	__ delayed()->nop();

	// make sure this extra code gets skipped
	bytes_to_skip += __ offset() - offset;
	}

	// Now emit the patch record telling the runtime how to find the
	// pieces of the patch. We only need 3 bytes but it has to be
	// aligned as an instruction so emit 4 bytes.
	int sizeof_patch_record = 4;
	bytes_to_skip += sizeof_patch_record;

	// emit the offsets needed to find the code to patch
	int being_initialized_entry_offset = __ offset() - being_initialized_entry + sizeof_patch_record;

	// Emit the patch record. We need to emit a full word, so emit an extra empty byte
	__ a_byte(0);
	__ a_byte(being_initialized_entry_offset);
	__ a_byte(bytes_to_skip);
	__ a_byte(_bytes_to_copy);
	address patch_info_pc = __ pc();
	assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");

	address entry = __ pc();
	NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
	address target = NULL;
	switch (_id) {
	case access_field_id: target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
	case load_klass_id: target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break;
	default: ShouldNotReachHere();
	}
	__ bind(call_patch);

	if (CommentedAssembly) {
	__ block_comment("patch entry point");
	}
	__ call(target, relocInfo::runtime_call_type);
	__ delayed()->nop();
	assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
	ce->add_call_info_here(_info);
	__ br(Assembler::always, false, Assembler::pt, _patch_site_entry);
	__ delayed()->nop();
	if (_id == load_klass_id) {
	CodeSection* cs = __ code_section();
	address pc = (address)_pc_start;
	RelocIterator iter(cs, pc, pc + 1);
	relocInfo::change_reloc_info_for_address(&iter, (address) pc, relocInfo::oop_type, relocInfo::none);

	pc = (address)(_pc_start + NativeMovConstReg::add_offset);
	RelocIterator iter2(cs, pc, pc+1);
	relocInfo::change_reloc_info_for_address(&iter2, (address) pc, relocInfo::oop_type, relocInfo::none);
	}

	}

	void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
	//---------------slow case: call to native-----------------
	__ bind(_entry);
	__ mov(src()->as_register(), O0);
	__ mov(src_pos()->as_register(), O1);
	__ mov(dst()->as_register(), O2);
	__ mov(dst_pos()->as_register(), O3);
	__ mov(length()->as_register(), O4);

	ce->emit_static_call_stub();

	__ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type);
	__ delayed()->nop();
	ce->add_call_info_here(info());
	ce->verify_oop_map(info());

	#ifndef PRODUCT
	__ set((intptr_t)&Runtime1::_arraycopy_slowcase_cnt, O0);
	__ ld(O0, 0, O1);
	__ inc(O1);
	__ st(O1, 0, O0);
	#endif

	__ br(Assembler::always, false, Assembler::pt, _continuation);
	__ delayed()->nop();
	}


	///////////////////////////////////////////////////////////////////////////////////
	#ifndef SERIALGC

	void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);

	assert(pre_val()->is_register(), "Precondition.");

	Register pre_val_reg = pre_val()->as_register();

	ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false);
	__ br_on_reg_cond(Assembler::rc_z, /annul/false, Assembler::pt,
	pre_val_reg, _continuation);
	__ delayed()->nop();

	__ call(Runtime1::entry_for(Runtime1::Runtime1::g1_pre_barrier_slow_id));
	__ delayed()->mov(pre_val_reg, G4);
	__ br(Assembler::always, false, Assembler::pt, _continuation);
	__ delayed()->nop();

	}

	jbyte* G1PostBarrierStub::_byte_map_base = NULL;

	jbyte* G1PostBarrierStub::byte_map_base_slow() {
	BarrierSet* bs = Universe::heap()->barrier_set();
	assert(bs->is_a(BarrierSet::G1SATBCTLogging),
	"Must be if we're using this.");
	return ((G1SATBCardTableModRefBS*)bs)->byte_map_base;
	}

	void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
	__ bind(_entry);

	assert(addr()->is_register(), "Precondition.");
	assert(new_val()->is_register(), "Precondition.");
	Register addr_reg = addr()->as_pointer_register();
	Register new_val_reg = new_val()->as_register();
	__ br_on_reg_cond(Assembler::rc_z, /annul/false, Assembler::pt,
	new_val_reg, _continuation);
	__ delayed()->nop();

	__ call(Runtime1::entry_for(Runtime1::Runtime1::g1_post_barrier_slow_id));
	__ delayed()->mov(addr_reg, G4);
	__ br(Assembler::always, false, Assembler::pt, _continuation);
	__ delayed()->nop();
	}

	#endif // SERIALGC
	///////////////////////////////////////////////////////////////////////////////////

	#undef __