Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/VMReg.java @ 18109:b72ce1826bd0
Truffle: revert back to typed primitives, but make the primitive array an int[]
author | Andreas Woess <andreas.woess@jku.at> |
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date | Wed, 15 Oct 2014 19:25:43 +0200 |
parents | c18cbe5936b8 |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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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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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.runtime; | |
26 | |
27 import java.util.*; | |
28 | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.types.*; | |
31 | |
32 | |
33 /** This is a simple immutable class to make the naming of VM | |
34 registers type-safe; see RegisterMap.java and frame.hpp. */ | |
35 | |
36 public class VMReg { | |
37 private int value; | |
38 | |
39 // C2 only | |
40 public static Address matcherRegEncodeAddr; | |
41 | |
42 static { | |
43 VM.registerVMInitializedObserver(new Observer() { | |
44 public void update(Observable o, Object data) { | |
45 initialize(VM.getVM().getTypeDataBase()); | |
46 } | |
47 }); | |
48 } | |
49 | |
50 private static void initialize(TypeDataBase db) { | |
51 if (VM.getVM().isServerCompiler()) { | |
52 Type type = db.lookupType("Matcher"); | |
53 Field f = type.getField("_regEncode"); | |
54 matcherRegEncodeAddr = f.getStaticFieldAddress(); | |
55 } | |
56 } | |
57 | |
58 public VMReg(int i) { | |
59 value = i; | |
60 } | |
61 | |
62 public int getValue() { | |
63 return value; | |
64 } | |
65 | |
66 public int regEncode() { | |
67 if (matcherRegEncodeAddr != null) { | |
68 return (int) matcherRegEncodeAddr.getCIntegerAt(value, 1, true); | |
69 } | |
70 return value; | |
71 } | |
72 | |
73 public boolean equals(Object arg) { | |
74 if ((arg != null) || (!(arg instanceof VMReg))) { | |
75 return false; | |
76 } | |
77 | |
78 return ((VMReg) arg).value == value; | |
79 } | |
80 | |
81 public boolean lessThan(VMReg arg) { return value < arg.value; } | |
82 public boolean lessThanOrEqual(VMReg arg) { return value <= arg.value; } | |
83 public boolean greaterThan(VMReg arg) { return value > arg.value; } | |
84 public boolean greaterThanOrEqual(VMReg arg) { return value >= arg.value; } | |
85 | |
86 public int minus(VMReg arg) { return value - arg.value; } | |
87 } |