jdk

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/*
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 * Copyright (c) 1997, 2021, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "code/debugInfo.hpp"
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#include "code/location.hpp"
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#include "runtime/handles.inline.hpp"
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void Location::print_on(outputStream* st) const {
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  if(type() == invalid) {
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    // product of Location::invalid_loc() or Location::Location().
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    switch (where()) {
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    case on_stack:     st->print("empty");    break;
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    case in_register:  st->print("invalid");  break;
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    }
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    return;
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  }
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  switch (where()) {
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  case on_stack:    st->print("stack[%d]", stack_offset());    break;
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  case in_register: st->print("reg %s [%d]", reg()->name(), register_number()); break;
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  default:          st->print("Wrong location where %d", where());
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  }
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  switch (type()) {
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  case normal:                                 break;
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  case oop:          st->print(",oop");        break;
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  case narrowoop:    st->print(",narrowoop");  break;
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  case int_in_long:  st->print(",int");        break;
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  case lng:          st->print(",long");       break;
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  case float_in_dbl: st->print(",float");      break;
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  case dbl:          st->print(",double");     break;
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  case addr:         st->print(",address");    break;
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  case vector:       st->print(",vector");     break;
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  default:           st->print("Wrong location type %d", type());
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  }
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}
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Location::Location(DebugInfoReadStream* stream) {
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  _value = (juint) stream->read_int();
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}
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void Location::write_on(DebugInfoWriteStream* stream) {
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  stream->write_int(_value);
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}
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// Valid argument to Location::new_stk_loc()?
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bool Location::legal_offset_in_bytes(int offset_in_bytes) {
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  if ((offset_in_bytes % BytesPerInt) != 0)  return false;
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  return (juint)(offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
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}
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