src/hotspot/share/code/pcDesc.cpp
author lucy
Tue, 21 May 2019 15:51:35 +0200
changeset 54960 e46fe26d7f77
parent 47216 71c04702a3d5
permissions -rw-r--r--
8213084: Rework and enhance Print[Opto]Assembly output Reviewed-by: kvn, thartmann
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/*
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 * Copyright (c) 1997, 2019, 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/debugInfoRec.hpp"
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#include "code/nmethod.hpp"
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#include "code/pcDesc.hpp"
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#include "code/scopeDesc.hpp"
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#include "memory/resourceArea.hpp"
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PcDesc::PcDesc(int pc_offset, int scope_decode_offset, int obj_decode_offset) {
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  _pc_offset           = pc_offset;
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  _scope_decode_offset = scope_decode_offset;
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  _obj_decode_offset   = obj_decode_offset;
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  _flags               = 0;
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}
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address PcDesc::real_pc(const CompiledMethod* code) const {
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  return code->code_begin() + pc_offset();
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}
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void PcDesc::print_on(outputStream* st, CompiledMethod* code) {
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#ifndef PRODUCT
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  ResourceMark rm;
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  st->print("PcDesc(pc=" PTR_FORMAT " offset=%x bits=%x):", p2i(real_pc(code)), pc_offset(), _flags);
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  if (scope_decode_offset() == DebugInformationRecorder::serialized_null) {
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    st->cr();
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    return;
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  }
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  int tab = 8;
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  int pos = st->position() + 2; // current column plus two spaces
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  pos = ((pos+tab-1)/tab)*tab;
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  for (ScopeDesc* sd = code->scope_desc_at(real_pc(code));
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       sd != NULL;
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       sd = sd->sender()) {
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    sd->print_on(st);
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  }
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#endif
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}
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bool PcDesc::verify(CompiledMethod* code) {
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  //Unimplemented();
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  return true;
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}