C++ (Cpp) store_ptr_argument Examples

Example #1

File: interpreterRT_sparc.cpp Project: 4T-Shirt/OpenJDK-Research

void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
  Argument  jni_arg(jni_offset(), false);
  Argument java_arg(    offset(), true);
  Register    Rtmp1 = O0;
  Register    Rtmp2 =  jni_arg.is_register() ?  jni_arg.as_register() : O0;
  Register    Rtmp3 =  G3_scratch;

  // the handle for a receiver will never be null
  bool do_NULL_check = offset() != 0 || is_static();

  Address     h_arg = Address(Llocals, Interpreter::local_offset_in_bytes(offset()));
  __ ld_ptr(h_arg, Rtmp1);
  if (!do_NULL_check) {
    __ add(h_arg.base(), h_arg.disp(), Rtmp2);
  } else {
    if (Rtmp1 == Rtmp2)
          __ tst(Rtmp1);
    else  __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair
    Label L;
    __ brx(Assembler::notZero, true, Assembler::pt, L);
    __ delayed()->add(h_arg.base(), h_arg.disp(), Rtmp2);
    __ bind(L);
  }
  __ store_ptr_argument(Rtmp2, jni_arg);    // this is often a no-op
}

Example #2

void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
  Argument  jni_arg(jni_offset(), false);
  Argument java_arg(    offset(), true);
  Register    Rtmp1 = O0;
  Register    Rtmp2 =  jni_arg.is_register() ?  jni_arg.as_register() : O0;
  Register    Rtmp3 =  G3_scratch;

  // the handle for a receiver will never be null
  bool do_NULL_check = offset() != 0 || is_static();

  Address     h_arg = Address(Llocals, Interpreter::local_offset_in_bytes(offset()));
  __ ld_ptr(h_arg, Rtmp1);
#ifdef ASSERT
  if (TaggedStackInterpreter) {
    // check we have the obj and not the tag
    Label ok;
    __ mov(frame::TagReference, Rtmp3);
    __ cmp(Rtmp1, Rtmp3);
    __ brx(Assembler::notEqual, true, Assembler::pt, ok);
    __ delayed()->nop();
    __ stop("Native object passed tag by mistake");
    __ bind(ok);
  }
#endif // ASSERT
  if (!do_NULL_check) {
    __ add(h_arg.base(), h_arg.disp(), Rtmp2);
  } else {
    if (Rtmp1 == Rtmp2)
          __ tst(Rtmp1);
    else  __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair
    Label L;
    __ brx(Assembler::notZero, true, Assembler::pt, L);
    __ delayed()->add(h_arg.base(), h_arg.disp(), Rtmp2);
    __ bind(L);
  }
  __ store_ptr_argument(Rtmp2, jni_arg);    // this is often a no-op
}