Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/asm/Disassembler.java @ 6782:5a98bf7d847b
6879063: SA should use hsdis for disassembly
Summary: We should in SA to use hsdis for it like the JVM does to replace the current java based disassembler.
Reviewed-by: twisti, jrose, sla
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Mon, 24 Sep 2012 12:44:00 -0700 |
| parents | c18cbe5936b8 |
| children | 763705f0fec3 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 6782 | 2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.asm; | |
| 26 | |
| 6782 | 27 import java.io.PrintStream; |
| 28 import java.util.Observer; | |
| 29 import java.util.Observable; | |
| 30 import sun.jvm.hotspot.code.CodeBlob; | |
| 31 import sun.jvm.hotspot.code.NMethod; | |
| 32 import sun.jvm.hotspot.debugger.Address; | |
| 33 import sun.jvm.hotspot.runtime.VM; | |
| 34 | |
| 35 public class Disassembler { | |
| 36 private static String options = ""; | |
| 37 private static long decode_function; | |
| 0 | 38 |
| 6782 | 39 protected long startPc; |
| 40 protected byte[] code; | |
| 41 private CodeBlob blob; | |
| 42 private NMethod nmethod; | |
| 43 | |
| 44 public static void decode(InstructionVisitor visitor, CodeBlob blob) { | |
| 45 decode(visitor, blob, blob.codeBegin(), blob.codeEnd()); | |
| 46 } | |
| 47 | |
| 48 public static void decode(InstructionVisitor visitor, CodeBlob blob, Address begin, Address end) { | |
| 49 int codeSize = (int)end.minus(begin); | |
| 50 long startPc = VM.getAddressValue(begin); | |
| 51 byte[] code = new byte[codeSize]; | |
| 52 for (int i = 0; i < code.length; i++) | |
| 53 code[i] = begin.getJByteAt(i); | |
| 54 Disassembler dis = new Disassembler(startPc, code); | |
| 55 dis.decode(visitor); | |
| 0 | 56 } |
| 57 | |
| 6782 | 58 private Disassembler(long startPc, byte[] code) { |
| 59 this.startPc = startPc; | |
| 60 this.code = code; | |
| 61 | |
| 62 // Lazily load hsdis | |
| 63 if (decode_function == 0) { | |
| 64 StringBuilder path = new StringBuilder(System.getProperty("java.home")); | |
| 65 String sep = System.getProperty("file.separator"); | |
| 66 String os = System.getProperty("os.name"); | |
| 67 String libname = "hsdis"; | |
| 68 String arch = System.getProperty("os.arch"); | |
| 69 if (os.lastIndexOf("Windows", 0) != -1) { | |
| 70 path.append(sep + "bin" + sep); | |
| 71 libname += ".dll"; | |
| 72 } else if (os.lastIndexOf("SunOS", 0) != -1) { | |
| 73 if (arch.equals("x86") || arch.equals("i386")) { | |
| 74 path.append(sep + "lib" + sep + "i386" + sep); | |
| 75 libname += "-i386" + ".so"; | |
| 76 } else if (arch.equals("amd64")) { | |
| 77 path.append(sep + "lib" + sep + "amd64" + sep); | |
| 78 libname += "-amd64" + ".so"; | |
| 79 } else { | |
| 80 path.append(sep + "lib" + sep + arch + sep); | |
| 81 libname += "-" + arch + ".so"; | |
| 82 } | |
| 83 } else if (os.lastIndexOf("Linux", 0) != -1) { | |
| 84 if (arch.equals("x86") || arch.equals("i386")) { | |
| 85 path.append(sep + "lib" + sep + "i386" + sep); | |
| 86 libname += "-i386.so"; | |
| 87 } else if (arch.equals("amd64") || arch.equals("x86_64")) { | |
| 88 path.append(sep + "lib" + sep + "amd64" + sep); | |
| 89 libname += "-amd64.so"; | |
| 90 } else { | |
| 91 path.append(sep + "lib" + sep + arch + sep); | |
| 92 libname += "-" + arch + ".so"; | |
| 93 } | |
| 94 } else if (os.lastIndexOf("Mac OS X", 0) != -1) { | |
| 95 path.append(sep + "lib" + sep); | |
| 96 libname += "-amd64" + ".dylib"; // x86_64 => amd64 | |
| 97 } else { | |
| 98 path.append(sep + "lib" + sep + "arch" + sep); | |
| 99 libname += "-" + arch + ".so"; | |
| 100 } | |
| 101 decode_function = load_library(path.toString(), libname); | |
| 102 } | |
| 0 | 103 } |
| 104 | |
| 6782 | 105 private static native long load_library(String installed_jrepath, String hsdis_library_name); |
| 106 | |
| 107 private native void decode(InstructionVisitor visitor, long pc, byte[] code, | |
| 108 String options, long decode_function); | |
| 109 | |
| 110 private void decode(InstructionVisitor visitor) { | |
| 111 visitor.prologue(); | |
| 112 decode(visitor, startPc, code, options, decode_function); | |
| 113 visitor.epilogue(); | |
| 114 } | |
| 115 | |
| 116 private boolean match(String event, String tag) { | |
| 117 if (!event.startsWith(tag)) | |
| 118 return false; | |
| 119 int taglen = tag.length(); | |
| 120 if (taglen == event.length()) return true; | |
| 121 char delim = event.charAt(taglen); | |
| 122 return delim == ' ' || delim == '/' || delim == '='; | |
| 0 | 123 } |
| 124 | |
| 6782 | 125 // This is called from the native code to process various markers |
| 126 // in the dissassembly. | |
| 127 private long handleEvent(InstructionVisitor visitor, String event, long arg) { | |
| 128 if (match(event, "insn")) { | |
| 129 try { | |
| 130 visitor.beginInstruction(arg); | |
| 131 } catch (Throwable e) { | |
| 132 e.printStackTrace(); | |
| 133 } | |
| 134 } else if (match(event, "/insn")) { | |
| 135 try { | |
| 136 visitor.endInstruction(arg); | |
| 137 } catch (Throwable e) { | |
| 138 e.printStackTrace(); | |
| 139 } | |
| 140 } else if (match(event, "addr")) { | |
| 141 if (arg != 0) { | |
| 142 visitor.printAddress(arg); | |
| 143 } | |
| 144 return arg; | |
| 145 } else if (match(event, "mach")) { | |
| 146 // output().printf("[Disassembling for mach='%s']\n", arg); | |
| 147 } else { | |
| 148 // ignore unrecognized markup | |
| 149 } | |
| 150 return 0; | |
| 151 } | |
| 152 | |
| 153 // This called from the native code to perform printing | |
| 154 private void rawPrint(InstructionVisitor visitor, String s) { | |
| 155 visitor.print(s); | |
| 156 } | |
| 0 | 157 } |