jdk8-mips64-public/hotspot: src/cpu/mips/vm/c1_CodeStubs

src/cpu/mips/vm/c1_CodeStubs_mips.cpp@ffcdff41a92f (annotated)

src/cpu/mips/vm/c1_CodeStubs_mips.cpp

Thu, 24 May 2018 19:49:50 +0800

author: aoqi
date: Thu, 24 May 2018 19:49:50 +0800
changeset 8865: ffcdff41a92f
parent 6880: 52ea28d233d2
child 9127: 0f3853aec741
permissions: -rw-r--r--

some C1 fix
Contributed-by: chenhaoxuan, zhaixiang, aoqi

 /*
  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2015, 2016, Loongson Technology. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "c1/c1_CodeStubs.hpp"
 #include "c1/c1_FrameMap.hpp"
 #include "c1/c1_LIRAssembler.hpp"
 #include "c1/c1_MacroAssembler.hpp"
 #include "c1/c1_Runtime1.hpp"
 #include "nativeInst_mips.hpp"
 #include "runtime/sharedRuntime.hpp"
 #include "utilities/macros.hpp"
 #include "vmreg_mips.inline.hpp"
 #if INCLUDE_ALL_GCS
 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
 #endif
 #define __ ce->masm()->
 float ConversionStub::float_zero = 0.0;
 double ConversionStub::double_zero = 0.0;
 void ConversionStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   assert(bytecode() == Bytecodes::_f2i || bytecode() == Bytecodes::_d2i, "other conversions do not require stub");
 }
 #ifdef TIERED
 void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   ce->store_parameter(_method->as_register(), 1);
   ce->store_parameter(_bci, 0);
   __ 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);
   __ b_far(_continuation);
   __ delayed()->nop();
 }
 #endif // TIERED
 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 = info == NULL ? NULL : new CodeEmitInfo(info);
 }
 void RangeCheckStub::emit_code(LIR_Assembler* ce) {
 #ifdef OPT_RANGECHECK
   if (_throw_pc != -1) {
     ce->compilation()->null_check_table()->append(_throw_pc, __ offset());
   }
 #endif
   __ bind(_entry);
   //// Pass the array index in eax since the runtime stub will add register state to the stack
   // pass the array index on stack because all registers must be preserved
   if (_index->is_cpu_register()) {
     ce->store_parameter(_index->as_register(), 0);
   } else {
     ce->store_parameter(_index->as_jint(), 0);
   }
   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);
   debug_only(__ should_not_reach_here());
 }
 PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {   // Fu:20130814
   _info = new CodeEmitInfo(info);
 }
 void PredicateFailedStub::emit_code(LIR_Assembler* ce) {         // Fu:20130814
   tty->print_cr("PredicateFailedStub::emit_code unimplemented yet!");
   Unimplemented();
 }
 void DivByZeroStub::emit_code(LIR_Assembler* ce) {
   if (_offset != -1) {
     //    ce->compilation()->null_check_table()->append(_offset, __ offset());
     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);
   debug_only(__ should_not_reach_here());
 }
 // 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;
 }
 // i use T4 as klass register, V0 as result register. MUST accord with Runtime1::generate_code_for.
 void NewInstanceStub::emit_code(LIR_Assembler* ce) {
   assert(__ sp_offset() == 0, "frame size should be fixed");
   __ bind(_entry);
 #ifndef _LP64
   assert(_klass_reg->as_register() == T4, "klass_reg must in T4");
 #else
   //FIXME. in A4? aoqi
   assert(_klass_reg->as_register() == A4, "klass_reg must in A4");
 #endif
   __ call(Runtime1::entry_for(_stub_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   assert(_result->as_register() == V0, "result must in V0,");
   __ b_far(_continuation);
   __ delayed()->nop();
 }
 // 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);
 }
 // i use T2 as length register, T4 as klass register, V0 as result register.
 // MUST accord with Runtime1::generate_code_for
 void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
   assert(__ sp_offset() == 0, "frame size should be fixed");
   __ bind(_entry);
   assert(_length->as_register() == T2, "length must in T2,");
 #ifndef _LP64
   assert(_klass_reg->as_register() == T4, "klass_reg must in T4");
 #else
   //FIXME. in A4? aoqi
   assert(_klass_reg->as_register() == A4, "klass_reg must in A4");
 #endif
   __ call(Runtime1::entry_for(Runtime1::new_type_array_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   assert(_result->as_register() == V0, "result must in V0,");
   __ b_far(_continuation);
   __ delayed()->nop();
 }
 // Implementation of NewObjectArrayStub
 NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
   _klass_reg = klass_reg;
   _result = result;
   _length = length;
   _info = new CodeEmitInfo(info);
 }
 void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
   assert(__ sp_offset() == 0, "frame size should be fixed");
   __ bind(_entry);
   assert(_length->as_register() == T2, "length must in ebx");
 #ifndef _LP64
   assert(_klass_reg->as_register() == T4, "klass_reg must in T4");
 #else
   assert(_klass_reg->as_register() == A4, "klass_reg must in A4");
 #endif
   __ call(Runtime1::entry_for(Runtime1::new_object_array_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   assert(_result->as_register() == V0, "result must in eax");
   __ b_far(_continuation);
   __ delayed()->nop();
 }
 // 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) {
   assert(__ sp_offset() == 0, "frame size should be fixed");
   __ bind(_entry);
   ce->store_parameter(_obj_reg->as_register(),  1);
   ce->store_parameter(_lock_reg->is_single_cpu()? _lock_reg->as_register() : _lock_reg->as_register_lo(), 0);
   Runtime1::StubID enter_id;
   if (ce->compilation()->has_fpu_code()) {
     enter_id = Runtime1::monitorenter_id;
   } else {
     enter_id = Runtime1::monitorenter_nofpu_id;
   }
   //__ call(RuntimeAddress(Runtime1::entry_for(enter_id)));
   __ call(Runtime1::entry_for(enter_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   ce->verify_oop_map(_info);
   __ b_far(_continuation);
   __ delayed()->nop();
 }
 void MonitorExitStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   if (_compute_lock) {
     // lock_reg was destroyed by fast unlocking attempt => recompute it
     ce->monitor_address(_monitor_ix, _lock_reg);
   }
   ce->store_parameter(_lock_reg->as_register(), 0);
   // note: non-blocking leaf routine => no call info needed
   Runtime1::StubID exit_id;
   if (ce->compilation()->has_fpu_code()) {
     exit_id = Runtime1::monitorexit_id;
   } else {
     exit_id = Runtime1::monitorexit_nofpu_id;
   }
   //__ call(RuntimeAddress(Runtime1::entry_for(exit_id)));
   __ call(Runtime1::entry_for(exit_id), relocInfo::runtime_call_type);
   __ delayed()->nop();
   __ b_far(_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;
 int PatchingStub::_patch_info_offset = -NativeCall::instruction_size;
 void PatchingStub::align_patch_site(MacroAssembler* masm) {
   // We're patching a 5-7 byte instruction on intel and we need to
   // make sure that we don't see a piece of the instruction.  It
   // appears mostly impossible on Intel to simply invalidate other
   // processors caches and since they may do aggressive prefetch it's
   // very hard to make a guess about what code might be in the icache.
   // Force the instruction to be double word aligned so that it
   // doesn't span a cache line.
   // the NativeJump is not finished, i am not sure what to do here. FIXME
   //  masm->align(round_to(NativeGeneralJump::instruction_size, wordSize));
   //tty->print_cr("align_patch_site has not finished yet!!!");
 }
 void PatchingStub::emit_code(LIR_Assembler* ce) {
   assert(NativeCall::instruction_size <= _bytes_to_copy && _bytes_to_copy <= 0xFF, "not enough room for call");
   assert(_bytes_to_copy <= 0xFF, "not enough room for call");
   Label call_patch;
   // 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.
   address being_initialized_entry = __ pc();
   if (CommentedAssembly) {
     __ block_comment(" patch template");
   }
   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
     Metadata* o = NULL;
     RelocationHolder rspec = metadata_Relocation::spec(_index);
     __ relocate(rspec);
     __ li48(_obj, (long)o);
     while ((intx)__ pc() - (intx)start < NativeCall::instruction_size) {
       __ nop();
     }
 #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 if (_id == load_mirror_id || _id == load_appendix_id) {
 //#ifdef ASSERT
     address start = __ pc();
 //#endif
     jobject o = NULL;
     RelocationHolder rspec = oop_Relocation::spec(_index);
     __ relocate(rspec);
     __ li48(_obj, (long)o);
     while ((intx)__ pc() - (intx)start < NativeCall::instruction_size) {
       __ nop();
     }
 #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.
     assert((_bytes_to_copy&3)==0, "change this code");
     address start = __ pc();
     for ( int i = 0; i < _bytes_to_copy; i+=4) {
       __ emit_int32(*(int*)(_pc_start + i));
       //make the site look like a nop, @jerome
       *(int*)(_pc_start + i)=0;
     }
     while ((intx)__ pc() - (intx)start < NativeCall::instruction_size) {
       __ nop();
     }
   }
   address end_of_patch = __ pc();
   int bytes_to_skip = 0;
   if (_id == load_mirror_id) {
     int offset = __ offset();
     if (CommentedAssembly) {
       __ block_comment(" being_initialized check");
     }
     assert(_obj != NOREG, "must be a valid register");
     Register tmp = AT;
     Register tmp2 = T9;
     __ ld_ptr(tmp2, Address(_obj, java_lang_Class::klass_offset_in_bytes()));
     __ get_thread(tmp);
     __ ld_ptr(tmp2, Address(tmp2, InstanceKlass::init_thread_offset()));
     __ bne(tmp, tmp2, call_patch);
     __ delayed()->nop();
     // access_field 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.
     __ b_far(_patch_site_continuation);
     __ delayed()->nop();
     bytes_to_skip += __ offset() - offset;
   }
   if (CommentedAssembly) {
     __ block_comment("patch data");
   }
   // Now emit the patch record telling the runtime how to find the
   // pieces of the patch.  We only need 3 bytes but for alignment, we
   // need 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 = __ pc() - being_initialized_entry + sizeof_patch_record;
   // patch_info_pc offset | size of b instruction(8)| patched code size
   assert((char)being_initialized_entry_offset==being_initialized_entry_offset, "just check");
   assert((char)bytes_to_skip==bytes_to_skip, "just check");
   assert((char)_bytes_to_copy==_bytes_to_copy, "just check");
   __ emit_int32(being_initialized_entry_offset<<8 | (bytes_to_skip<<16) | (_bytes_to_copy<<24) );
   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;
   relocInfo::relocType reloc_type = relocInfo::none;
   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); reloc_type = relocInfo::metadata_type; break;
     case load_mirror_id:   target = Runtime1::entry_for(Runtime1::load_mirror_patching_id); reloc_type = relocInfo::oop_type; break;
     case load_appendix_id: target = Runtime1::entry_for(Runtime1::load_appendix_patching_id); reloc_type = relocInfo::oop_type; break;
     default: ShouldNotReachHere();
   }
   __ bind(call_patch);
   if (CommentedAssembly) {
     __ block_comment("patch entry point");
   }
   __ li48(T9, (long)target);
   __ jalr(T9);
   __ delayed()->nop();
   assert(_patch_info_offset == (patch_info_pc - __ pc()), "must not change");
   ce->add_call_info_here(_info);
   int jmp_off = __ offset();
   __ b_far(_patch_site_entry);
   __ delayed()->nop();
   // Add enough nops so deoptimization can overwrite the jmp above with a call
   // and not destroy the world.
   for (int j = __ offset(); j < jmp_off + NativeCall::instruction_size; j += 4 ) {
     __ nop();
   }
   if (_id == load_klass_id || _id == load_mirror_id || _id == load_appendix_id) {
     CodeSection* cs = __ code_section();
     address pc = (address)_pc_start;
     RelocIterator iter(cs, pc, pc + 1);
     relocInfo::change_reloc_info_for_address(&iter, pc, reloc_type, relocInfo::none);
   }
 }
 void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
   __ bind(_entry);
   __ call(Runtime1::entry_for(Runtime1::deoptimize_id), relocInfo::runtime_call_type);
   ce->add_call_info_here(_info);
   DEBUG_ONLY(__ should_not_reach_here());
 }
 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);
   debug_only(__ should_not_reach_here());
 }
 // i dont know which register to use here, i just assume A1 here. FIXME
 void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
   assert(__ sp_offset() == 0, "frame size should be fixed");
   __ bind(_entry);
   // pass the object on stack because all registers must be preserved
   if (_obj->is_cpu_register()) {
     ce->store_parameter(_obj->as_register(), 0);
   }
   __ call(Runtime1::entry_for(_stub), relocInfo::runtime_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(_info);
   debug_only(__ should_not_reach_here());
 }
 void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
   //---------------slow case: call to native-----------------
   __ bind(_entry);
   // Figure out where the args should go
   // This should really convert the IntrinsicID to the methodOop and signature
   // but I don't know how to do that.
   //
   VMRegPair args[5];
   BasicType signature[5] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT};
   SharedRuntime::java_calling_convention(signature, args, 5, true);
   // push parameters
   // (src, src_pos, dest, destPos, length)
   Register r[5];
   r[0] = src()->as_register();
   r[1] = src_pos()->as_register();
   r[2] = dst()->as_register();
   r[3] = dst_pos()->as_register();
   r[4] = length()->as_register();
   // next registers will get stored on the stack
   for (int i = 0; i < 5 ; i++ ) {
     VMReg r_1 = args[i].first();
     if (r_1->is_stack()) {
       int st_off = r_1->reg2stack() * wordSize;
       __ sw( r[i],  SP, st_off);
     } else {
       assert(r[i] == args[i].first()->as_Register(), "Wrong register for arg ");
     }
   }
   ce->align_call(lir_static_call);
   ce->emit_static_call_stub();
   __ call(SharedRuntime::get_resolve_static_call_stub(), relocInfo::static_call_type);
   __ delayed()->nop();
   ce->add_call_info_here(info());
 #ifndef PRODUCT
 #ifndef _LP64
   __ lui(T8, Assembler::split_high((int)&Runtime1::_arraycopy_slowcase_cnt));
   __ lw(AT, T8, Assembler::split_low((int)&Runtime1::_arraycopy_slowcase_cnt));
   __ addiu(AT, AT, 1);
   __ sw(AT, T8, Assembler::split_low((int)&Runtime1::_arraycopy_slowcase_cnt));
 #else
   __ li(T8, (long)&Runtime1::_arraycopy_slowcase_cnt);
   __ lw(AT, T8, 0);
   __ daddiu(AT, AT, 1);
   __ sw(AT, T8, 0);
 #endif
 #endif
   __ b_far(_continuation);
   __ delayed()->nop();
 }
 /////////////////////////////////////////////////////////////////////////////
 #if INCLUDE_ALL_GCS
 void G1PreBarrierStub::emit_code(LIR_Assembler* ce) {
   Unimplemented();
 }
 void G1PostBarrierStub::emit_code(LIR_Assembler* ce) {
   Unimplemented();
 }
 #endif // INCLUDE_ALL_GCS
 /////////////////////////////////////////////////////////////////////////////
 #undef __

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/mips/vm/c1_CodeStubs_mips.cpp@ffcdff41a92f (annotated)

src/cpu/mips/vm/c1_CodeStubs_mips.cpp