src/share/vm/code/location.cpp

changeset 0
f90c822e73f8
child 6876
710a3c8b516e
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/share/vm/code/location.cpp	Wed Apr 27 01:25:04 2016 +0800
     1.3 @@ -0,0 +1,71 @@
     1.4 +/*
     1.5 + * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + *
    1.26 + */
    1.27 +
    1.28 +#include "precompiled.hpp"
    1.29 +#include "code/debugInfo.hpp"
    1.30 +#include "code/location.hpp"
    1.31 +
    1.32 +void Location::print_on(outputStream* st) const {
    1.33 +  if(type() == invalid) {
    1.34 +    // product of Location::invalid_loc() or Location::Location().
    1.35 +    switch (where()) {
    1.36 +    case on_stack:     st->print("empty");    break;
    1.37 +    case in_register:  st->print("invalid");  break;
    1.38 +    }
    1.39 +    return;
    1.40 +  }
    1.41 +  switch (where()) {
    1.42 +  case on_stack:    st->print("stack[%d]", stack_offset());    break;
    1.43 +  case in_register: st->print("reg %s [%d]", reg()->name(), register_number()); break;
    1.44 +  default:          st->print("Wrong location where %d", where());
    1.45 +  }
    1.46 +  switch (type()) {
    1.47 +  case normal:                                 break;
    1.48 +  case oop:          st->print(",oop");        break;
    1.49 +  case narrowoop:    st->print(",narrowoop");  break;
    1.50 +  case int_in_long:  st->print(",int");        break;
    1.51 +  case lng:          st->print(",long");       break;
    1.52 +  case float_in_dbl: st->print(",float");      break;
    1.53 +  case dbl:          st->print(",double");     break;
    1.54 +  case addr:         st->print(",address");    break;
    1.55 +  default:           st->print("Wrong location type %d", type());
    1.56 +  }
    1.57 +}
    1.58 +
    1.59 +
    1.60 +Location::Location(DebugInfoReadStream* stream) {
    1.61 +  _value = (juint) stream->read_int();
    1.62 +}
    1.63 +
    1.64 +
    1.65 +void Location::write_on(DebugInfoWriteStream* stream) {
    1.66 +  stream->write_int(_value);
    1.67 +}
    1.68 +
    1.69 +
    1.70 +// Valid argument to Location::new_stk_loc()?
    1.71 +bool Location::legal_offset_in_bytes(int offset_in_bytes) {
    1.72 +  if ((offset_in_bytes % BytesPerInt) != 0)  return false;
    1.73 +  return (juint)(offset_in_bytes / BytesPerInt) < (OFFSET_MASK >> OFFSET_SHIFT);
    1.74 +}

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