Mercurial > hg > graal-jvmci-8
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/DebuggerUtilities.java @ 17524:89152779163c
Merge with jdk8-b132
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Wed, 15 Oct 2014 11:59:32 +0200 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2001, 2002, 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 |
c18cbe5936b8
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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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.debugger; | |
26 | |
27 /** Common routines for data conversion */ | |
28 | |
29 public class DebuggerUtilities { | |
30 protected long addressSize; | |
31 protected boolean isBigEndian; | |
32 | |
33 public DebuggerUtilities(long addressSize, boolean isBigEndian) { | |
34 this.addressSize = addressSize; | |
35 this.isBigEndian = isBigEndian; | |
36 } | |
37 | |
38 public String addressValueToString(long address) { | |
39 StringBuffer buf = new StringBuffer(); | |
40 buf.append("0x"); | |
41 String val; | |
42 // Make negative addresses have the correct size | |
43 if (addressSize == 8) { | |
44 val = Long.toHexString(address); | |
45 } else { | |
46 val = Integer.toHexString((int) address); | |
47 } | |
48 for (int i = 0; i < ((2 * addressSize) - val.length()); i++) { | |
49 buf.append('0'); | |
50 } | |
51 buf.append(val); | |
52 return buf.toString(); | |
53 } | |
54 | |
55 public void checkAlignment(long address, long alignment) { | |
56 if (address % alignment != 0) { | |
57 throw new UnalignedAddressException("Trying to read at address: " + | |
58 addressValueToString(address) + | |
59 " with alignment: " + alignment, | |
60 address); | |
61 } | |
62 } | |
63 | |
64 public long scanAddress(String addrStr) throws NumberFormatException { | |
65 String s = addrStr.trim(); | |
66 if (!s.startsWith("0x")) { | |
67 throw new NumberFormatException(addrStr); | |
68 } | |
69 long l = 0; | |
70 for (int i = 2; i < s.length(); ++i) { | |
71 int val = charToNibble(s.charAt(i)); | |
72 l <<= 4; | |
73 l |= val; | |
74 } | |
75 return l; | |
76 } | |
77 | |
78 public int charToNibble(char ascii) throws NumberFormatException { | |
79 if (ascii >= '0' && ascii <= '9') { | |
80 return ascii - '0'; | |
81 } else if (ascii >= 'A' && ascii <= 'F') { | |
82 return 10 + ascii - 'A'; | |
83 } else if (ascii >= 'a' && ascii <= 'f') { | |
84 return 10 + ascii - 'a'; | |
85 } | |
86 throw new NumberFormatException(new Character(ascii).toString()); | |
87 } | |
88 | |
89 public boolean dataToJBoolean(byte[] data, long jbooleanSize) { | |
90 checkDataContents(data, jbooleanSize); | |
91 | |
92 return (data[0] != 0); | |
93 } | |
94 | |
95 public byte dataToJByte(byte[] data, long jbyteSize) { | |
96 checkDataContents(data, jbyteSize); | |
97 | |
98 return data[0]; | |
99 } | |
100 | |
101 public char dataToJChar(byte[] data, long jcharSize) { | |
102 checkDataContents(data, jcharSize); | |
103 | |
104 if (!isBigEndian) { | |
105 byteSwap(data); | |
106 } | |
107 | |
108 return (char) (((data[0] & 0xFF) << 8) | (data[1] & 0xFF)); | |
109 } | |
110 | |
111 public double dataToJDouble(byte[] data, long jdoubleSize) { | |
112 long longBits = dataToJLong(data, jdoubleSize); | |
113 | |
114 return Double.longBitsToDouble(longBits); | |
115 } | |
116 | |
117 public float dataToJFloat(byte[] data, long jfloatSize) { | |
118 int intBits = dataToJInt(data, jfloatSize); | |
119 | |
120 return Float.intBitsToFloat(intBits); | |
121 } | |
122 | |
123 public int dataToJInt(byte[] data, long jintSize) { | |
124 checkDataContents(data, jintSize); | |
125 | |
126 if (!isBigEndian) { | |
127 byteSwap(data); | |
128 } | |
129 | |
130 return (((data[0] & 0xFF) << 24) | ((data[1] & 0xFF) << 16) | ((data[2] & 0xFF) << 8) | (data[3] & 0xFF)); | |
131 } | |
132 | |
133 public long dataToJLong(byte[] data, long jlongSize) { | |
134 checkDataContents(data, jlongSize); | |
135 | |
136 if (!isBigEndian) { | |
137 byteSwap(data); | |
138 } | |
139 | |
140 return rawDataToJLong(data); | |
141 } | |
142 | |
143 public short dataToJShort(byte[] data, long jshortSize) { | |
144 checkDataContents(data, jshortSize); | |
145 | |
146 if (!isBigEndian) { | |
147 byteSwap(data); | |
148 } | |
149 | |
150 return (short) (((data[0] & 0xFF) << 8) | (data[1] & 0xFF)); | |
151 } | |
152 | |
153 public long dataToCInteger(byte[] data, boolean isUnsigned) { | |
154 checkDataContents(data, data.length); | |
155 | |
156 if (!isBigEndian) { | |
157 byteSwap(data); | |
158 } | |
159 | |
160 // By default we'll be zero-extending. | |
161 // Therefore we need to check to see whether isUnsigned is false and | |
162 // also the high bit of the data is set. | |
163 if ((data.length < 8) && | |
164 (isUnsigned == false) && | |
165 ((data[0] & 0x80) != 0)) { | |
166 // Must sign-extend and right-align the data | |
167 byte[] newData = new byte[8]; | |
168 for (int i = 0; i < 8; ++i) { | |
169 if ((7 - i) < data.length) { | |
170 newData[i] = data[i + data.length - 8]; | |
171 } else { | |
172 newData[i] = (byte) 0xFF; | |
173 } | |
174 } | |
175 data = newData; | |
176 } | |
177 | |
178 // Now just do the usual loop | |
179 return rawDataToJLong(data); | |
180 } | |
181 | |
182 public long dataToAddressValue(byte[] data) { | |
183 checkDataContents(data, addressSize); | |
184 | |
185 if (!isBigEndian) { | |
186 byteSwap(data); | |
187 } | |
188 | |
189 return rawDataToJLong(data); | |
190 } | |
191 | |
192 public byte[] jbooleanToData(boolean value) { | |
193 byte[] res = new byte[1]; | |
194 res[0] = (byte) (value ? 1 : 0); | |
195 return res; | |
196 } | |
197 | |
198 public byte[] jbyteToData(byte value) { | |
199 byte[] res = new byte[1]; | |
200 res[0] = value; | |
201 return res; | |
202 } | |
203 | |
204 public byte[] jcharToData(char value) { | |
205 byte[] res = new byte[2]; | |
206 res[0] = (byte) ((value >> 8) & 0xFF); | |
207 res[1] = (byte) value; | |
208 if (!isBigEndian) { | |
209 byteSwap(res); | |
210 } | |
211 return res; | |
212 } | |
213 | |
214 public byte[] jdoubleToData(double value) { | |
215 return jlongToData(Double.doubleToLongBits(value)); | |
216 } | |
217 | |
218 public byte[] jfloatToData(float value) { | |
219 return jintToData(Float.floatToIntBits(value)); | |
220 } | |
221 | |
222 public byte[] jintToData(int value) { | |
223 byte[] res = new byte[4]; | |
224 for (int i = 0; i < 4; i++) { | |
225 res[3 - i] = (byte) (value & 0xFF); | |
226 value >>>= 8; | |
227 } | |
228 if (!isBigEndian) { | |
229 byteSwap(res); | |
230 } | |
231 return res; | |
232 } | |
233 | |
234 public byte[] jlongToData(long value) { | |
235 byte[] res = new byte[8]; | |
236 for (int i = 0; i < 8; i++) { | |
237 res[7 - i] = (byte) (value & 0xFF); | |
238 value >>>= 8; | |
239 } | |
240 if (!isBigEndian) { | |
241 byteSwap(res); | |
242 } | |
243 return res; | |
244 } | |
245 | |
246 public byte[] jshortToData(short value) { | |
247 byte[] res = new byte[2]; | |
248 res[0] = (byte) ((value >> 8) & 0xFF); | |
249 res[1] = (byte) value; | |
250 if (!isBigEndian) { | |
251 byteSwap(res); | |
252 } | |
253 return res; | |
254 } | |
255 | |
256 public byte[] cIntegerToData(long longNumBytes, long value) { | |
257 int numBytes = (int) longNumBytes; | |
258 byte[] res = new byte[numBytes]; | |
259 for (int i = 0; i < numBytes; i++) { | |
260 res[numBytes - i - 1] = (byte) (value & 0xFF); | |
261 value >>>= 8; | |
262 } | |
263 if (!isBigEndian) { | |
264 byteSwap(res); | |
265 } | |
266 return res; | |
267 } | |
268 | |
269 //-------------------------------------------------------------------------------- | |
270 // Internals only below this point | |
271 // | |
272 | |
273 private void checkDataContents(byte[] data, long len) { | |
274 if (data.length != (int) len) { | |
275 throw new InternalError("Bug in Win32Debugger"); | |
276 } | |
277 } | |
278 | |
279 private void byteSwap(byte[] data) { | |
280 for (int i = 0; i < (data.length / 2); ++i) { | |
281 int altIndex = data.length - i - 1; | |
282 byte t = data[altIndex]; | |
283 data[altIndex] = data[i]; | |
284 data[i] = t; | |
285 } | |
286 } | |
287 | |
288 private long rawDataToJLong(byte[] data) { | |
289 long addr = 0; | |
290 for (int i = 0; i < data.length; ++i) { | |
291 addr <<= 8; | |
292 addr |= data[i] & 0xFF; | |
293 } | |
294 | |
295 return addr; | |
296 } | |
297 } |