Mercurial > hg > graal-jvmci-8
comparison 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 |
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date | Mon, 24 Sep 2012 12:44:00 -0700 |
parents | c18cbe5936b8 |
children | 763705f0fec3 |
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6780:8440414b0fd8 | 6782:5a98bf7d847b |
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1 /* | 1 /* |
2 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. | 2 * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | 4 * |
5 * This code is free software; you can redistribute it and/or modify it | 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 | 6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
22 * | 22 * |
23 */ | 23 */ |
24 | 24 |
25 package sun.jvm.hotspot.asm; | 25 package sun.jvm.hotspot.asm; |
26 | 26 |
27 public abstract class Disassembler { | 27 import java.io.PrintStream; |
28 protected long startPc; | 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; | |
38 | |
39 protected long startPc; | |
29 protected byte[] code; | 40 protected byte[] code; |
41 private CodeBlob blob; | |
42 private NMethod nmethod; | |
30 | 43 |
31 public Disassembler(long startPc, byte[] code) { | 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); | |
56 } | |
57 | |
58 private Disassembler(long startPc, byte[] code) { | |
32 this.startPc = startPc; | 59 this.startPc = startPc; |
33 this.code = code; | 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 } | |
34 } | 103 } |
35 | 104 |
36 public long getStartPC() { | 105 private static native long load_library(String installed_jrepath, String hsdis_library_name); |
37 return startPc; | 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(); | |
38 } | 114 } |
39 | 115 |
40 public byte[] getCode() { | 116 private boolean match(String event, String tag) { |
41 return code; | 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 == '='; | |
42 } | 123 } |
43 | 124 |
44 public abstract void decode(InstructionVisitor visitor); | 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 } | |
45 } | 157 } |