org.adoptopenjdk.jitwatch.model.assembly.AssemblyReference Maven / Gradle / Ivy

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A Maven plugin that scans the project artifact and its dependencies for methods that cannot be inlined by the JIT compiler. It uses the JarScan utility from the JITWatch project to do that. See https://github.com/AdoptOpenJDK/jitwatch .

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/*
 * Copyright (c) 2013-2015 Chris Newland.
 * Licensed under https://github.com/AdoptOpenJDK/jitwatch/blob/master/LICENSE-BSD
 * Instructions: https://github.com/AdoptOpenJDK/jitwatch/wiki
 */
package org.adoptopenjdk.jitwatch.model.assembly;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public final class AssemblyReference
{
	private static Map mnemonicMap = new HashMap<>();

	private static final String TAG_MNEM_OPEN = "";
	private static final String TAG_MNEM_CLOSE = "";
	private static final String TAG_BRIEF_OPEN = "";
	private static final String TAG_BRIEF_CLOSE = "";

	private static final Logger LOGGER = LoggerFactory.getLogger(AssemblyReference.class);

	private static final String ASM_REF_PATH = "/x86reference.xml";

	static
	{
		BufferedReader bufferedReader = null;

		try
		{
			InputStream asmRefInputStream = AssemblyReference.class.getResourceAsStream(ASM_REF_PATH);

			if (asmRefInputStream == null)
			{
				LOGGER.error(
						"Could not find assembly reference {}. If launching from an IDE please add /src/main/resources to your classpath",
						ASM_REF_PATH);
			}
			else
			{
				bufferedReader = new BufferedReader(new InputStreamReader(asmRefInputStream), 65536);

				String currentLine = bufferedReader.readLine();

				Set mnemonics = new HashSet<>();

				while (currentLine != null)
				{
					int openMnemPos = currentLine.indexOf(TAG_MNEM_OPEN);

					if (openMnemPos != -1)
					{
						int closeMnemPos = currentLine.indexOf(TAG_MNEM_CLOSE);

						if (closeMnemPos != -1)
						{
							String mnemonic = currentLine.substring(openMnemPos + TAG_MNEM_OPEN.length(), closeMnemPos)
									.toLowerCase();

							mnemonics.add(mnemonic);
						}
					}

					int openBriefPos = currentLine.indexOf(TAG_BRIEF_OPEN);

					if (openBriefPos != -1)
					{
						int closeBriefPos = currentLine.indexOf(TAG_BRIEF_CLOSE);

						if (closeBriefPos != -1)
						{
							String brief = currentLine.substring(openBriefPos + TAG_BRIEF_OPEN.length(), closeBriefPos);

							for (String mnemonic : mnemonics)
							{
								if (!mnemonicMap.containsKey(mnemonic))
								{
									mnemonicMap.put(mnemonic, brief);
								}
							}

							mnemonics.clear();
						}
					}

					currentLine = bufferedReader.readLine();
				}
			}
		}
		catch (IOException ioe)
		{
			LOGGER.error("Could not load assembly reference", ioe);
		}
		finally
		{
			if (bufferedReader != null)
			{
				try
				{
					bufferedReader.close();
				}
				catch (IOException ioe)
				{
					LOGGER.error("Could not close reader", ioe);
				}
			}
		}

		// patch up missing descriptions
		mnemonicMap.put("movabs", "Move a 64-bit value");
		mnemonicMap.put("ret", mnemonicMap.get("retn"));
		mnemonicMap.put("movslq", mnemonicMap.get("movsxd"));

	}

	private AssemblyReference()
	{
	}

	public static String lookupMnemonic(String mnemonic)
	{
		String result = mnemonicMap.get(mnemonic);

		if (result == null)
		{
			// check if it has a size suffix (b,w,l,q)
			if (mnemonic.endsWith("b") || mnemonic.endsWith("w") || mnemonic.endsWith("l") || mnemonic.endsWith("q"))
			{
				result = mnemonicMap.get(mnemonic.substring(0, mnemonic.length() - 1));
			}
		}

		return result;
	}
}