Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/asm/Disassembler.java @ 12704:0e998f0daddf
Code cache: make sure we collect statistics even if the compiler is not recognized
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 07 Nov 2013 11:17:23 +0100 |
parents | 5a98bf7d847b |
children | 763705f0fec3 |
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/* * Copyright (c) 2002, 2012, 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) { 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); } }