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定義場所(file name)

hotspot/src/cpu/sparc/vm/jniFastGetField_sparc.cpp

名前(function name)

address JNI_FastGetField::generate_fast_get_float_field0(BasicType type) {

本体部(body)

  {- -------------------------------------------
  (1) JNI_FastGetField::generate_fast_get_int_field0() とほぼ同様.
      ---------------------------------------- -}

      const char *name;
      switch (type) {
        case T_FLOAT:  name = "jni_fast_GetFloatField";  break;
        case T_DOUBLE: name = "jni_fast_GetDoubleField"; break;
        default:       ShouldNotReachHere();
      }
      ResourceMark rm;
      BufferBlob* blob = BufferBlob::create(name, BUFFER_SIZE*wordSize);
      CodeBuffer cbuf(blob);
      MacroAssembler* masm = new MacroAssembler(&cbuf);
      address fast_entry = __ pc();

      Label label1, label2;

      AddressLiteral cnt_addrlit(SafepointSynchronize::safepoint_counter_addr());
      __ sethi (cnt_addrlit, O3);
      Address cnt_addr(O3, cnt_addrlit.low10());
      __ ld (cnt_addr, G4);
      __ andcc (G4, 1, G0);
      __ br (Assembler::notZero, false, Assembler::pn, label1);
      __ delayed()->srl (O2, 2, O4);
      __ ld_ptr (O1, 0, O5);

      assert(count < LIST_CAPACITY, "LIST_CAPACITY too small");
      speculative_load_pclist[count] = __ pc();
      switch (type) {
        case T_FLOAT:  __ ldf (FloatRegisterImpl::S, O5, O4, F0); break;
        case T_DOUBLE: __ ldf (FloatRegisterImpl::D, O5, O4, F0); break;
        default:       ShouldNotReachHere();
      }

      __ ld (cnt_addr, O5);
      __ cmp (O5, G4);
      __ br (Assembler::notEqual, false, Assembler::pn, label2);
      __ delayed()->mov (O7, G1);

      __ retl ();
      __ delayed()-> nop ();

      slowcase_entry_pclist[count++] = __ pc();
      __ bind (label1);
      __ mov (O7, G1);

      address slow_case_addr;
      switch (type) {
        case T_FLOAT:  slow_case_addr = jni_GetFloatField_addr();  break;
        case T_DOUBLE: slow_case_addr = jni_GetDoubleField_addr(); break;
        default:       ShouldNotReachHere();
      }
      __ bind (label2);
      __ call (slow_case_addr, relocInfo::none);
      __ delayed()->mov (G1, O7);

      __ flush ();

      return fast_entry;
    }

This document is available under the GNU GENERAL PUBLIC LICENSE Version 2.