duke@435: /*
duke@435:  * Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
duke@435:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435:  * CA 95054 USA or visit www.sun.com if you need additional information or
duke@435:  * have any questions.
duke@435:  *
duke@435:  */
duke@435: 
duke@435: #include "incls/_precompiled.incl"
duke@435: #include "incls/_c1_CodeStubs_sparc.cpp.incl"
duke@435: 
duke@435: #define __ ce->masm()->
duke@435: 
duke@435: RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index,
duke@435:                                bool throw_index_out_of_bounds_exception)
duke@435:   : _throw_index_out_of_bounds_exception(throw_index_out_of_bounds_exception)
duke@435:   , _index(index)
duke@435: {
duke@435:   _info = new CodeEmitInfo(info);
duke@435: }
duke@435: 
duke@435: 
duke@435: void RangeCheckStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435: 
duke@435:   if (_index->is_register()) {
duke@435:     __ mov(_index->as_register(), G4);
duke@435:   } else {
duke@435:     __ set(_index->as_jint(), G4);
duke@435:   }
duke@435:   if (_throw_index_out_of_bounds_exception) {
duke@435:     __ call(Runtime1::entry_for(Runtime1::throw_index_exception_id), relocInfo::runtime_call_type);
duke@435:   } else {
duke@435:     __ call(Runtime1::entry_for(Runtime1::throw_range_check_failed_id), relocInfo::runtime_call_type);
duke@435:   }
duke@435:   __ delayed()->nop();
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435: #ifdef ASSERT
duke@435:   __ should_not_reach_here();
duke@435: #endif
duke@435: }
duke@435: 
duke@435: #ifdef TIERED
duke@435: 
duke@435: void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435:   __ set(_bci, G4);
duke@435:   __ call(Runtime1::entry_for(Runtime1::counter_overflow_id), relocInfo::runtime_call_type);
duke@435:   __ delayed()->nop();
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435: 
duke@435:   __ br(Assembler::always, true, Assembler::pt, _continuation);
duke@435:   __ delayed()->nop();
duke@435: }
duke@435: 
duke@435: #endif // TIERED
duke@435: 
duke@435: void DivByZeroStub::emit_code(LIR_Assembler* ce) {
duke@435:   if (_offset != -1) {
duke@435:     ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
duke@435:   }
duke@435:   __ bind(_entry);
duke@435:   __ call(Runtime1::entry_for(Runtime1::throw_div0_exception_id), relocInfo::runtime_call_type);
duke@435:   __ delayed()->nop();
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435: #ifdef ASSERT
duke@435:   __ should_not_reach_here();
duke@435: #endif
duke@435: }
duke@435: 
duke@435: 
duke@435: void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
duke@435:   ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
duke@435:   __ bind(_entry);
duke@435:   __ call(Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id),
duke@435:           relocInfo::runtime_call_type);
duke@435:   __ delayed()->nop();
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435: #ifdef ASSERT
duke@435:   __ should_not_reach_here();
duke@435: #endif
duke@435: }
duke@435: 
duke@435: 
duke@435: // Implementation of SimpleExceptionStub
duke@435: // Note: %g1 and %g3 are already in use
duke@435: void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435:   __ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type);
duke@435: 
duke@435:   if (_obj->is_valid()) {
duke@435:     __ delayed()->mov(_obj->as_register(), G4); // _obj contains the optional argument to the stub
duke@435:   } else {
duke@435:     __ delayed()->mov(G0, G4);
duke@435:   }
duke@435:   ce->add_call_info_here(_info);
duke@435: #ifdef ASSERT
duke@435:   __ should_not_reach_here();
duke@435: #endif
duke@435: }
duke@435: 
duke@435: 
duke@435: // Implementation of ArrayStoreExceptionStub
duke@435: 
duke@435: ArrayStoreExceptionStub::ArrayStoreExceptionStub(CodeEmitInfo* info):
duke@435:   _info(info) {
duke@435: }
duke@435: 
duke@435: 
duke@435: void ArrayStoreExceptionStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435:   __ call(Runtime1::entry_for(Runtime1::throw_array_store_exception_id), relocInfo::runtime_call_type);
duke@435:   __ delayed()->nop();
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435: #ifdef ASSERT
duke@435:   __ should_not_reach_here();
duke@435: #endif
duke@435: }
duke@435: 
duke@435: 
duke@435: 
duke@435: 
duke@435: // Implementation of NewInstanceStub
duke@435: 
duke@435: NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
duke@435:   _result = result;
duke@435:   _klass = klass;
duke@435:   _klass_reg = klass_reg;
duke@435:   _info = new CodeEmitInfo(info);
duke@435:   assert(stub_id == Runtime1::new_instance_id                 ||
duke@435:          stub_id == Runtime1::fast_new_instance_id            ||
duke@435:          stub_id == Runtime1::fast_new_instance_init_check_id,
duke@435:          "need new_instance id");
duke@435:   _stub_id   = stub_id;
duke@435: }
duke@435: 
duke@435: 
duke@435: void NewInstanceStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435:   __ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type);
duke@435:   __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435:   __ br(Assembler::always, false, Assembler::pt, _continuation);
duke@435:   __ delayed()->mov_or_nop(O0, _result->as_register());
duke@435: }
duke@435: 
duke@435: 
duke@435: // Implementation of NewTypeArrayStub
duke@435: NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
duke@435:   _klass_reg = klass_reg;
duke@435:   _length = length;
duke@435:   _result = result;
duke@435:   _info = new CodeEmitInfo(info);
duke@435: }
duke@435: 
duke@435: 
duke@435: void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435: 
duke@435:   __ mov(_length->as_register(), G4);
duke@435:   __ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type);
duke@435:   __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435:   __ br(Assembler::always, false, Assembler::pt, _continuation);
duke@435:   __ delayed()->mov_or_nop(O0, _result->as_register());
duke@435: }
duke@435: 
duke@435: 
duke@435: // Implementation of NewObjectArrayStub
duke@435: 
duke@435: NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
duke@435:   _klass_reg = klass_reg;
duke@435:   _length = length;
duke@435:   _result = result;
duke@435:   _info = new CodeEmitInfo(info);
duke@435: }
duke@435: 
duke@435: 
duke@435: void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435: 
duke@435:   __ mov(_length->as_register(), G4);
duke@435:   __ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type);
duke@435:   __ delayed()->mov_or_nop(_klass_reg->as_register(), G5);
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435:   __ br(Assembler::always, false, Assembler::pt, _continuation);
duke@435:   __ delayed()->mov_or_nop(O0, _result->as_register());
duke@435: }
duke@435: 
duke@435: 
duke@435: // Implementation of MonitorAccessStubs
duke@435: MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
duke@435:   : MonitorAccessStub(obj_reg, lock_reg) {
duke@435:   _info = new CodeEmitInfo(info);
duke@435: }
duke@435: 
duke@435: 
duke@435: void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435:   __ mov(_obj_reg->as_register(), G4);
duke@435:   if (ce->compilation()->has_fpu_code()) {
duke@435:     __ call(Runtime1::entry_for(Runtime1::monitorenter_id), relocInfo::runtime_call_type);
duke@435:   } else {
duke@435:     __ call(Runtime1::entry_for(Runtime1::monitorenter_nofpu_id), relocInfo::runtime_call_type);
duke@435:   }
duke@435:   __ delayed()->mov_or_nop(_lock_reg->as_register(), G5);
duke@435:   ce->add_call_info_here(_info);
duke@435:   ce->verify_oop_map(_info);
duke@435:   __ br(Assembler::always, true, Assembler::pt, _continuation);
duke@435:   __ delayed()->nop();
duke@435: }
duke@435: 
duke@435: 
duke@435: void MonitorExitStub::emit_code(LIR_Assembler* ce) {
duke@435:   __ bind(_entry);
duke@435:   if (_compute_lock) {
duke@435:     ce->monitor_address(_monitor_ix, _lock_reg);
duke@435:   }
duke@435:   if (ce->compilation()->has_fpu_code()) {
duke@435:     __ call(Runtime1::entry_for(Runtime1::monitorexit_id), relocInfo::runtime_call_type);
duke@435:   } else {
duke@435:     __ call(Runtime1::entry_for(Runtime1::monitorexit_nofpu_id), relocInfo::runtime_call_type);
duke@435:   }
duke@435: 
duke@435:   __ delayed()->mov_or_nop(_lock_reg->as_register(), G4);
duke@435:   __ br(Assembler::always, true, Assembler::pt, _continuation);
duke@435:   __ delayed()->nop();
duke@435: }
duke@435: 
duke@435: // Implementation of patching:
duke@435: // - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
duke@435: // - Replace original code with a call to the stub
duke@435: // At Runtime:
duke@435: // - call to stub, jump to runtime
duke@435: // - in runtime: preserve all registers (especially objects, i.e., source and destination object)
duke@435: // - in runtime: after initializing class, restore original code, reexecute instruction
duke@435: 
duke@435: int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
duke@435: 
duke@435: void PatchingStub::align_patch_site(MacroAssembler* ) {
duke@435:   // patch sites on sparc are always properly aligned.
duke@435: }
duke@435: 
duke@435: void PatchingStub::emit_code(LIR_Assembler* ce) {
duke@435:   // copy original code here
duke@435:   assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF,
duke@435:          "not enough room for call");
duke@435:   assert((_bytes_to_copy & 0x3) == 0, "must copy a multiple of four bytes");
duke@435: 
duke@435:   Label call_patch;
duke@435: 
duke@435:   int being_initialized_entry = __ offset();
duke@435: 
duke@435:   if (_id == load_klass_id) {
duke@435:     // produce a copy of the load klass instruction for use by the being initialized case
duke@435:     address start = __ pc();
duke@435:     Address addr = Address(_obj, address(NULL), oop_Relocation::spec(_oop_index));
duke@435:     __ sethi(addr, true);
duke@435:     __ add(addr, _obj, 0);
duke@435: 
duke@435: #ifdef ASSERT
duke@435:     for (int i = 0; i < _bytes_to_copy; i++) {
duke@435:       address ptr = (address)(_pc_start + i);
duke@435:       int a_byte = (*ptr) & 0xFF;
duke@435:       assert(a_byte == *start++, "should be the same code");
duke@435:     }
duke@435: #endif
duke@435:   } else {
duke@435:     // make a copy the code which is going to be patched.
duke@435:     for (int i = 0; i < _bytes_to_copy; i++) {
duke@435:       address ptr = (address)(_pc_start + i);
duke@435:       int a_byte = (*ptr) & 0xFF;
duke@435:       __ a_byte (a_byte);
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   address end_of_patch = __ pc();
duke@435:   int bytes_to_skip = 0;
duke@435:   if (_id == load_klass_id) {
duke@435:     int offset = __ offset();
duke@435:     if (CommentedAssembly) {
duke@435:       __ block_comment(" being_initialized check");
duke@435:     }
duke@435: 
duke@435:     // static field accesses have special semantics while the class
duke@435:     // initializer is being run so we emit a test which can be used to
duke@435:     // check that this code is being executed by the initializing
duke@435:     // thread.
duke@435:     assert(_obj != noreg, "must be a valid register");
duke@435:     assert(_oop_index >= 0, "must have oop index");
duke@435:     __ ld_ptr(_obj, instanceKlass::init_thread_offset_in_bytes() + sizeof(klassOopDesc), G3);
duke@435:     __ cmp(G2_thread, G3);
duke@435:     __ br(Assembler::notEqual, false, Assembler::pn, call_patch);
duke@435:     __ delayed()->nop();
duke@435: 
duke@435:     // load_klass patches may execute the patched code before it's
duke@435:     // copied back into place so we need to jump back into the main
duke@435:     // code of the nmethod to continue execution.
duke@435:     __ br(Assembler::always, false, Assembler::pt, _patch_site_continuation);
duke@435:     __ delayed()->nop();
duke@435: 
duke@435:     // make sure this extra code gets skipped
duke@435:     bytes_to_skip += __ offset() - offset;
duke@435:   }
duke@435: 
duke@435:   // Now emit the patch record telling the runtime how to find the
duke@435:   // pieces of the patch.  We only need 3 bytes but it has to be
duke@435:   // aligned as an instruction so emit 4 bytes.
duke@435:   int sizeof_patch_record = 4;
duke@435:   bytes_to_skip += sizeof_patch_record;
duke@435: 
duke@435:   // emit the offsets needed to find the code to patch
duke@435:   int being_initialized_entry_offset = __ offset() - being_initialized_entry + sizeof_patch_record;
duke@435: 
duke@435:   // Emit the patch record.  We need to emit a full word, so emit an extra empty byte
duke@435:   __ a_byte(0);
duke@435:   __ a_byte(being_initialized_entry_offset);
duke@435:   __ a_byte(bytes_to_skip);
duke@435:   __ a_byte(_bytes_to_copy);
duke@435:   address patch_info_pc = __ pc();
duke@435:   assert(patch_info_pc - end_of_patch == bytes_to_skip, "incorrect patch info");
duke@435: 
duke@435:   address entry = __ pc();
duke@435:   NativeGeneralJump::insert_unconditional((address)_pc_start, entry);
duke@435:   address target = NULL;
duke@435:   switch (_id) {
duke@435:     case access_field_id:  target = Runtime1::entry_for(Runtime1::access_field_patching_id); break;
duke@435:     case load_klass_id:    target = Runtime1::entry_for(Runtime1::load_klass_patching_id); break;
duke@435:     default: ShouldNotReachHere();
duke@435:   }
duke@435:   __ bind(call_patch);
duke@435: 
duke@435:   if (CommentedAssembly) {
duke@435:     __ block_comment("patch entry point");
duke@435:   }
duke@435:   __ call(target, relocInfo::runtime_call_type);
duke@435:   __ delayed()->nop();
duke@435:   assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
duke@435:   ce->add_call_info_here(_info);
duke@435:   __ br(Assembler::always, false, Assembler::pt, _patch_site_entry);
duke@435:   __ delayed()->nop();
duke@435:   if (_id == load_klass_id) {
duke@435:     CodeSection* cs = __ code_section();
duke@435:     address pc = (address)_pc_start;
duke@435:     RelocIterator iter(cs, pc, pc + 1);
duke@435:     relocInfo::change_reloc_info_for_address(&iter, (address) pc, relocInfo::oop_type, relocInfo::none);
duke@435: 
duke@435:     pc = (address)(_pc_start + NativeMovConstReg::add_offset);
duke@435:     RelocIterator iter2(cs, pc, pc+1);
duke@435:     relocInfo::change_reloc_info_for_address(&iter2, (address) pc, relocInfo::oop_type, relocInfo::none);
duke@435:   }
duke@435: 
duke@435: }
duke@435: 
duke@435: void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
duke@435:   //---------------slow case: call to native-----------------
duke@435:   __ bind(_entry);
duke@435:   __ mov(src()->as_register(),     O0);
duke@435:   __ mov(src_pos()->as_register(), O1);
duke@435:   __ mov(dst()->as_register(),     O2);
duke@435:   __ mov(dst_pos()->as_register(), O3);
duke@435:   __ mov(length()->as_register(),  O4);
duke@435: 
duke@435:   ce->emit_static_call_stub();
duke@435: 
duke@435:   __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type);
duke@435:   __ delayed()->nop();
duke@435:   ce->add_call_info_here(info());
duke@435:   ce->verify_oop_map(info());
duke@435: 
duke@435: #ifndef PRODUCT
duke@435:   __ set((intptr_t)&Runtime1::_arraycopy_slowcase_cnt, O0);
duke@435:   __ ld(O0, 0, O1);
duke@435:   __ inc(O1);
duke@435:   __ st(O1, 0, O0);
duke@435: #endif
duke@435: 
duke@435:   __ br(Assembler::always, false, Assembler::pt, _continuation);
duke@435:   __ delayed()->nop();
duke@435: }
duke@435: 
duke@435: 
ysr@777: ///////////////////////////////////////////////////////////////////////////////////
ysr@777: #ifndef SERIALGC
ysr@777: 
ysr@777: void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {
ysr@777:   __ bind(_entry);
ysr@777: 
ysr@777:   assert(pre_val()->is_register(), "Precondition.");
ysr@777: 
ysr@777:   Register pre_val_reg = pre_val()->as_register();
ysr@777: 
ysr@777:   ce->mem2reg(addr(), pre_val(), T_OBJECT, patch_code(), info(), false);
ysr@777:   __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
ysr@777:                     pre_val_reg, _continuation);
ysr@777:   __ delayed()->nop();
ysr@777: 
ysr@777:   __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_pre_barrier_slow_id));
ysr@777:   __ delayed()->mov(pre_val_reg, G4);
ysr@777:   __ br(Assembler::always, false, Assembler::pt, _continuation);
ysr@777:   __ delayed()->nop();
ysr@777: 
ysr@777: }
ysr@777: 
ysr@777: jbyte* G1PostBarrierStub::_byte_map_base = NULL;
ysr@777: 
ysr@777: jbyte* G1PostBarrierStub::byte_map_base_slow() {
ysr@777:   BarrierSet* bs = Universe::heap()->barrier_set();
ysr@777:   assert(bs->is_a(BarrierSet::G1SATBCTLogging),
ysr@777:          "Must be if we're using this.");
ysr@777:   return ((G1SATBCardTableModRefBS*)bs)->byte_map_base;
ysr@777: }
ysr@777: 
ysr@777: void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
ysr@777:   __ bind(_entry);
ysr@777: 
ysr@777:   assert(addr()->is_register(), "Precondition.");
ysr@777:   assert(new_val()->is_register(), "Precondition.");
ysr@777:   Register addr_reg = addr()->as_pointer_register();
ysr@777:   Register new_val_reg = new_val()->as_register();
ysr@777:   __ br_on_reg_cond(Assembler::rc_z, /*annul*/false, Assembler::pt,
ysr@777:                     new_val_reg, _continuation);
ysr@777:   __ delayed()->nop();
ysr@777: 
ysr@777:   __ call(Runtime1::entry_for(Runtime1::Runtime1::g1_post_barrier_slow_id));
ysr@777:   __ delayed()->mov(addr_reg, G4);
ysr@777:   __ br(Assembler::always, false, Assembler::pt, _continuation);
ysr@777:   __ delayed()->nop();
ysr@777: }
ysr@777: 
ysr@777: #endif // SERIALGC
ysr@777: ///////////////////////////////////////////////////////////////////////////////////
ysr@777: 
duke@435: #undef __