pcDesc.cpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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#include "precompiled.hpp"
#include "code/debugInfoRec.hpp"
#include "code/nmethod.hpp"
#include "code/pcDesc.hpp"
#include "code/scopeDesc.hpp"
#include "memory/resourceArea.hpp"

PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC

PcDesc::PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset) {
  _pc_offset           = pc_offset;
  _scope_decode_offset = scope_decode_offset;
  _obj_decode_offset   = obj_decode_offset;
  _flags               = 0;
}

address PcDesc::real_pc(const nmethod* code) const {
  return code->code_begin() + pc_offset();
}

void PcDesc::print(nmethod* code) {
#ifndef PRODUCT
  ResourceMark rm;
  tty->print_cr("PcDesc(pc=0x%lx offset=%x bits=%x):", real_pc(code), pc_offset(), _flags);

  if (scope_decode_offset() == DebugInformationRecorder::serialized_null) {
    return;
  }

  for (ScopeDesc* sd = code->scope_desc_at(real_pc(code));
       sd != NULL;
       sd = sd->sender()) {
    tty->print("  ");
    sd->method()->print_short_name(tty);
    tty->print("  @%d", sd->bci());
    if (sd->should_reexecute())
      tty->print("  reexecute=true");
    tty->cr();
  }
#endif
}

bool PcDesc::verify(nmethod* code) {
  //Unimplemented();
  return true;
}