objArray_prims.cpp

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/* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.15 $ */
/* Copyright (c) 2006, Sun Microsystems, Inc.
All rights reserved.

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    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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          disclaimer in the documentation and/or other materials provided with the distribution.
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          from this software without specific prior written permission.

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

TRACE_FUNC(TraceObjArrayPrims, "objArray")

int objArrayPrimitives::number_of_calls;

#define ASSERT_RECEIVER assert(receiver->is_objArray(), "receiver must be object array")

PRIM_DECL_2(objArrayPrimitives::allocateSize, oop receiver, oop argument) {
  PROLOGUE_2("allocateSize", receiver, argument);
  assert(receiver->is_klass() && klassOop(receiver)->klass_part()->oop_is_objArray(),
         "receiver must object array class");
  if (!argument->is_smi())
    return markSymbol(vmSymbols::first_argument_has_wrong_type());

  if (smiOop(argument)->value() < 0)
    return markSymbol(vmSymbols::negative_size());

  klassOop k        = klassOop(receiver);
  int      ni_size  = k->klass_part()->non_indexable_size();
  int      obj_size = ni_size + 1 + smiOop(argument)->value();
  // allocate
  objArrayOop obj = as_objArrayOop(Universe::allocate(obj_size, (memOop*)&k));
  // header
  memOop(obj)->initialize_header(k->klass_part()->has_untagged_contents(), k);
  // instance variables
  memOop(obj)->initialize_body(memOopDesc::header_size(), ni_size);
  // %optimized 'obj->set_length(size)'
  oop* base = (oop*) obj->addr();
  base[ni_size] = argument;
  memOop(obj)->initialize_body(ni_size+1, obj_size);
  return obj;
}

PRIM_DECL_1(objArrayPrimitives::size, oop receiver) {
  PROLOGUE_1("size", receiver);
  ASSERT_RECEIVER;
  // do the operation
  return as_smiOop(objArrayOop(receiver)->length());
}

PRIM_DECL_2(objArrayPrimitives::at, oop receiver, oop index) {
  PROLOGUE_2("at", receiver, index);
  ASSERT_RECEIVER;

  // check index type
  if (!index->is_smi())
    return markSymbol(vmSymbols::first_argument_has_wrong_type());

  // check index value
  if (!objArrayOop(receiver)->is_within_bounds(smiOop(index)->value()))
     return markSymbol(vmSymbols::out_of_bounds());

  // do the operation
  return objArrayOop(receiver)->obj_at(smiOop(index)->value());
}

PRIM_DECL_3(objArrayPrimitives::atPut, oop receiver, oop index, oop value) {
  PROLOGUE_3("atPut", receiver, index, value);
  ASSERT_RECEIVER;

  // check index type
  if (!index->is_smi())
    return markSymbol(vmSymbols::first_argument_has_wrong_type());

  // check index value
  if (!objArrayOop(receiver)->is_within_bounds(smiOop(index)->value()))
    return markSymbol(vmSymbols::out_of_bounds());

  // do the operation
  objArrayOop(receiver)->obj_at_put(smiOop(index)->value(), value);
  return receiver;
}


PRIM_DECL_2(objArrayPrimitives::at_all_put, oop receiver, oop obj) {
  PROLOGUE_2("at_all_put", receiver, obj);
  ASSERT_RECEIVER;

  int  length = objArrayOop(receiver)->length();
  if (obj->is_new() && receiver->is_old()) {
    // Do store checks
    for (int index = 1; index <= length; index++) {
      objArrayOop(receiver)->obj_at_put(index, obj); 
    }
  } else {
    // Ignore store check for speed
    set_oops(objArrayOop(receiver)->objs(1), length, obj);
  }
  return receiver;
}

PRIM_DECL_5(objArrayPrimitives::replace_from_to, oop receiver, oop from, oop to, oop source, oop start) {
  PROLOGUE_5("replace_from_to", receiver, from, to, source, start);
  ASSERT_RECEIVER;

  // check from type
  if (!from->is_smi())
    return markSymbol(vmSymbols::first_argument_has_wrong_type());

  // check to type
  if (!to->is_smi())
    return markSymbol(vmSymbols::second_argument_has_wrong_type());

  // check source type
  if (!source->is_objArray())
    return markSymbol(vmSymbols::third_argument_has_wrong_type());

  // check start type
  if (!start->is_smi())
    return markSymbol(vmSymbols::third_argument_has_wrong_type());

  // check from > 0
  if (smiOop(from) <= 0)
    return markSymbol(vmSymbols::out_of_bounds());

  // check to < self size
  if (smiOop(to)->value() > objArrayOop(receiver)->length())
    return markSymbol(vmSymbols::out_of_bounds());

  // check from <= to
  if (smiOop(from)->value() > smiOop(to)->value())
    return markSymbol(vmSymbols::out_of_bounds());

  // check if source is big enough
  if (smiOop(start)->value() + (smiOop(to)->value() - smiOop(from)->value() + 1) > objArrayOop(source)->length())
    return markSymbol(vmSymbols::out_of_bounds());

  // Dispatch the operation to the array
  objArrayOop(receiver)->replace_from_to(smiOop(from)->value(), smiOop(to)->value(), objArrayOop(source), smiOop(start)->value());

  return receiver;
}

PRIM_DECL_4(objArrayPrimitives::copy_size, oop receiver, oop from, oop start, oop size) {
  PROLOGUE_4("copy_size", receiver, from, start, size);
  ASSERT_RECEIVER;

  // check from type
  if (!from->is_smi())
    return markSymbol(vmSymbols::first_argument_has_wrong_type());

  // check start type
  if (!start->is_smi())
    return markSymbol(vmSymbols::second_argument_has_wrong_type());

  // check size type
  if (!size->is_smi())
    return markSymbol(vmSymbols::third_argument_has_wrong_type());

  // check from > 0
  if (smiOop(from) <= 0)
    return markSymbol(vmSymbols::out_of_bounds());

  // check start > 0
  if (smiOop(start) <= 0)
    return markSymbol(vmSymbols::out_of_bounds());
  
  // Check size is positive
  if (smiOop(size)->value() < 0)
    return markSymbol(vmSymbols::negative_size());

  HandleMark hm;
  Handle saved_receiver(receiver); 

  // allocation of object array
  klassOop k        = receiver->klass();
  int      ni_size  = k->klass_part()->non_indexable_size();
  int      obj_size = ni_size + 1 + smiOop(size)->value();
  // allocate
  objArrayOop obj = as_objArrayOop(Universe::allocate(obj_size, (memOop*)&k));

  objArrayOop src = saved_receiver.as_objArray();

  // header
  memOop(obj)->initialize_header(k->klass_part()->has_untagged_contents(), k);
  // copy instance variables
  for (int index = memOopDesc::header_size(); index < ni_size; index++ ) {
     obj->raw_at_put(index, src->raw_at(index));
  }
  // length
  obj->set_length(smiOop(size)->value());
  // fill the array
  obj->replace_and_fill(smiOop(from)->value(), smiOop(start)->value(), src);

  return obj;
}

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