| /* |
| * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| package sun.jvm.hotspot.asm; |
| |
| import java.io.PrintStream; |
| import java.util.Observer; |
| import java.util.Observable; |
| import sun.jvm.hotspot.code.CodeBlob; |
| import sun.jvm.hotspot.code.NMethod; |
| import sun.jvm.hotspot.debugger.Address; |
| import sun.jvm.hotspot.runtime.VM; |
| |
| public class Disassembler { |
| private static String options = ""; |
| private static long decode_function; |
| |
| protected long startPc; |
| protected byte[] code; |
| private CodeBlob blob; |
| private NMethod nmethod; |
| |
| public static void decode(InstructionVisitor visitor, CodeBlob blob) { |
| decode(visitor, blob, blob.codeBegin(), blob.codeEnd()); |
| } |
| |
| public static void decode(InstructionVisitor visitor, CodeBlob blob, Address begin, Address end) { |
| int codeSize = (int)end.minus(begin); |
| long startPc = VM.getAddressValue(begin); |
| byte[] code = new byte[codeSize]; |
| for (int i = 0; i < code.length; i++) |
| code[i] = begin.getJByteAt(i); |
| Disassembler dis = new Disassembler(startPc, code); |
| dis.decode(visitor); |
| } |
| |
| private Disassembler(long startPc, byte[] code) { |
| this.startPc = startPc; |
| this.code = code; |
| |
| // Lazily load hsdis |
| if (decode_function == 0) { |
| StringBuilder path = new StringBuilder(System.getProperty("java.home")); |
| String sep = System.getProperty("file.separator"); |
| String os = System.getProperty("os.name"); |
| String libname = "hsdis"; |
| String arch = System.getProperty("os.arch"); |
| if (os.lastIndexOf("Windows", 0) != -1) { |
| if (arch.equals("x86")) { |
| libname += "-i386"; |
| } else if (arch.equals("amd64")) { |
| libname += "-amd64"; |
| } else { |
| libname += "-" + arch; |
| } |
| path.append(sep + "bin" + sep); |
| libname += ".dll"; |
| } else if (os.lastIndexOf("SunOS", 0) != -1) { |
| if (arch.equals("x86") || arch.equals("i386")) { |
| path.append(sep + "lib" + sep + "i386" + sep); |
| libname += "-i386" + ".so"; |
| } else if (arch.equals("amd64")) { |
| path.append(sep + "lib" + sep + "amd64" + sep); |
| libname += "-amd64" + ".so"; |
| } else { |
| path.append(sep + "lib" + sep + arch + sep); |
| libname += "-" + arch + ".so"; |
| } |
| } else if (os.lastIndexOf("Linux", 0) != -1) { |
| if (arch.equals("x86") || arch.equals("i386")) { |
| path.append(sep + "lib" + sep + "i386" + sep); |
| libname += "-i386.so"; |
| } else if (arch.equals("amd64") || arch.equals("x86_64")) { |
| path.append(sep + "lib" + sep + "amd64" + sep); |
| libname += "-amd64.so"; |
| } else { |
| path.append(sep + "lib" + sep + arch + sep); |
| libname += "-" + arch + ".so"; |
| } |
| } else if (os.lastIndexOf("Mac OS X", 0) != -1) { |
| path.append(sep + "lib" + sep); |
| libname += "-amd64" + ".dylib"; // x86_64 => amd64 |
| } else { |
| path.append(sep + "lib" + sep + "arch" + sep); |
| libname += "-" + arch + ".so"; |
| } |
| decode_function = load_library(path.toString(), libname); |
| } |
| } |
| |
| private static native long load_library(String installed_jrepath, String hsdis_library_name); |
| |
| private native void decode(InstructionVisitor visitor, long pc, byte[] code, |
| String options, long decode_function); |
| |
| private void decode(InstructionVisitor visitor) { |
| visitor.prologue(); |
| decode(visitor, startPc, code, options, decode_function); |
| visitor.epilogue(); |
| } |
| |
| private boolean match(String event, String tag) { |
| if (!event.startsWith(tag)) |
| return false; |
| int taglen = tag.length(); |
| if (taglen == event.length()) return true; |
| char delim = event.charAt(taglen); |
| return delim == ' ' || delim == '/' || delim == '='; |
| } |
| |
| // This is called from the native code to process various markers |
| // in the dissassembly. |
| private long handleEvent(InstructionVisitor visitor, String event, long arg) { |
| if (match(event, "insn")) { |
| try { |
| visitor.beginInstruction(arg); |
| } catch (Throwable e) { |
| e.printStackTrace(); |
| } |
| } else if (match(event, "/insn")) { |
| try { |
| visitor.endInstruction(arg); |
| } catch (Throwable e) { |
| e.printStackTrace(); |
| } |
| } else if (match(event, "addr")) { |
| if (arg != 0) { |
| visitor.printAddress(arg); |
| } |
| return arg; |
| } else if (match(event, "mach")) { |
| // output().printf("[Disassembling for mach='%s']\n", arg); |
| } else { |
| // ignore unrecognized markup |
| } |
| return 0; |
| } |
| |
| // This called from the native code to perform printing |
| private void rawPrint(InstructionVisitor visitor, String s) { |
| visitor.print(s); |
| } |
| } |