| /******************************************************************************* |
| * Copyright (c) 2000, 2006 QNX Software Systems and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * QNX Software Systems - Initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.cdt.utils; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.OutputStreamWriter; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.cdt.core.IAddress; |
| import org.eclipse.cdt.utils.spawner.ProcessFactory; |
| |
| public class Addr2line { |
| private String[] args; |
| private Process addr2line; |
| private BufferedReader stdout; |
| private BufferedWriter stdin; |
| private String lastaddr, lastsymbol, lastline; |
| private static final Pattern OUTPUT_PATTERN = Pattern.compile("(.*)( \\(discriminator.*\\))"); //$NON-NLS-1$ |
| //private boolean isDisposed = false; |
| |
| public Addr2line(String command, String[] params, String file) throws IOException { |
| init(command, params, file); |
| } |
| |
| public Addr2line(String command, String file) throws IOException { |
| this(command, new String[0], file); |
| } |
| |
| public Addr2line(String file) throws IOException { |
| this("addr2line", file); //$NON-NLS-1$ |
| } |
| |
| protected void init(String command, String[] params, String file) throws IOException { |
| if (params == null || params.length == 0) { |
| args = new String[] {command, "-C", "-f", "-e", file}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ |
| } else { |
| args = new String[params.length + 1]; |
| args[0] = command; |
| System.arraycopy(params, 0, args, 1, params.length); |
| } |
| addr2line = ProcessFactory.getFactory().exec(args); |
| stdin = new BufferedWriter(new OutputStreamWriter(addr2line.getOutputStream())); |
| stdout = new BufferedReader(new InputStreamReader(addr2line.getInputStream())); |
| } |
| |
| protected void getOutput(String address) throws IOException { |
| if ( address.equals(lastaddr) == false ) { |
| stdin.write(address + "\n"); //$NON-NLS-1$ |
| stdin.flush(); |
| lastsymbol = stdout.readLine(); |
| lastline = stdout.readLine(); |
| lastaddr = address; |
| } |
| } |
| |
| public String getLine(IAddress address) throws IOException { |
| getOutput(address.toString(16)); |
| return lastline; |
| } |
| |
| public String getFunction(IAddress address) throws IOException { |
| getOutput(address.toString(16)); |
| return lastsymbol; |
| } |
| |
| /** |
| * The format of the output: |
| * addr2line -C -f -e hello |
| * 08048442 |
| * main |
| * hello.c:39 |
| */ |
| public String getFileName(IAddress address) throws IOException { |
| String filename = null; |
| String line = getLine(address); |
| int index1, index2; |
| if (line != null && (index1 = line.lastIndexOf(':')) != -1) { |
| // we do this because addr2line on win produces |
| // <cygdrive/pathtoexc/C:/pathtofile:##> |
| index2 = line.indexOf(':'); |
| if (index1 == index2) { |
| index2 = 0; |
| } else { |
| index2--; |
| } |
| filename = line.substring(index2, index1); |
| } |
| return filename; |
| } |
| |
| /** |
| * The format of the output: |
| * addr2line -C -f -e hello |
| * 08048442 |
| * main |
| * hello.c:39 |
| */ |
| public int getLineNumber(IAddress address) throws IOException { |
| // We try to get the nearest match |
| // since the symbol may not exactly align with debug info. |
| // In C line number 0 is invalid, line starts at 1 for file, we use |
| // this for validation. |
| |
| //IPF_TODO: check |
| for (int i = 0; i <= 20; i += 4, address = address.add(i)) { |
| String line = getLine(address); |
| line = parserOutput(line); |
| if (line != null) { |
| int colon = line.lastIndexOf(':'); |
| String number = line.substring(colon + 1); |
| if (!number.startsWith("0")) { //$NON-NLS-1$ |
| try { |
| return Integer.parseInt(number); |
| } catch(Exception ex) { |
| return -1; |
| } |
| } |
| } |
| } |
| return -1; |
| } |
| |
| public void dispose() { |
| try { |
| stdout.close(); |
| stdin.close(); |
| addr2line.getErrorStream().close(); |
| } catch (IOException e) { |
| } |
| addr2line.destroy(); |
| //isDisposed = true; |
| } |
| |
| private String parserOutput(String line) { |
| Matcher matcher = OUTPUT_PATTERN.matcher(line); |
| if (matcher.matches() && matcher.groupCount() > 1) { |
| line = matcher.group(1); |
| } |
| return line; |
| } |
| } |
| |
| |