agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeLoadConstant.java
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*** old/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeLoadConstant.java Fri Jul 8 15:22:19 2011
--- new/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeLoadConstant.java Fri Jul 8 15:22:19 2011
*** 25,58 ****
--- 25,55 ----
package sun.jvm.hotspot.interpreter;
import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.utilities.*;
+ import sun.jvm.hotspot.ui.classbrowser.*;
- public class BytecodeLoadConstant extends BytecodeWithCPIndex {
BytecodeLoadConstant(Method method, int bci) {
super(method, bci);
}
public boolean hasCacheIndex() {
// normal ldc uses CP index, but fast_aldc uses swapped CP cache index
! return javaCode() != code();
! return code() >= Bytecodes.number_of_java_codes;
}
! public int index() {
! int i = javaCode() == Bytecodes._ldc ?
(int) (0xFF & javaByteAt(1))
: (int) (0xFFFF & javaShortAt(1));
if (hasCacheIndex()) {
return (0xFFFF & VM.getVM().getBytes().swapShort((short) i));
} else {
return i;
! int rawIndex() {
! if (javaCode() == Bytecodes._ldc)
+ return getIndexU1();
+ else
+ return getIndexU2(code(), false);
}
}
public int poolIndex() {
! int i = index();
! int i = rawIndex();
if (hasCacheIndex()) {
ConstantPoolCache cpCache = method().getConstants().getCache();
return cpCache.getEntryAt(i).getConstantPoolIndex();
} else {
return i;
*** 59,74 ****
--- 56,77 ----
}
}
public int cacheIndex() {
if (hasCacheIndex()) {
! return index();
! return rawIndex();
} else {
return -1; // no cache index
}
}
+ public BasicType resultType() {
+ int index = poolIndex();
+ ConstantTag tag = method().getConstants().getTagAt(index);
+ return tag.basicType();
+ }
+
private Oop getCachedConstant() {
int i = cacheIndex();
if (i >= 0) {
ConstantPoolCache cpCache = method().getConstants().getCache();
return cpCache.getEntryAt(i).getF1();
*** 81,104 ****
--- 84,113 ----
Assert.that(isValid(), "check load constant");
}
}
public boolean isValid() {
+ method().printValueOn(System.out);
+ System.out.printf(" @ %d %d: %d", bci(), code(), hasCacheIndex() ? 1 : 0);
+ System.out.printf(" %d %d\n", poolIndex(), cacheIndex());
+
int jcode = javaCode();
boolean codeOk = jcode == Bytecodes._ldc || jcode == Bytecodes._ldc_w ||
jcode == Bytecodes._ldc2_w;
if (! codeOk) return false;
! ConstantTag ctag = method().getConstants().getTagAt(index());
! ConstantTag ctag = method().getConstants().getTagAt(rawIndex());
+ System.err.println(jcode + " " + ctag.value());
if (jcode == Bytecodes._ldc2_w) {
// has to be double or long
return (ctag.isDouble() || ctag.isLong()) ? true: false;
} else {
// has to be int or float or String or Klass
return (ctag.isUnresolvedString() || ctag.isString()
|| ctag.isUnresolvedKlass() || ctag.isKlass()
|| ctag.isMethodHandle() || ctag.isMethodType()
+ || ctag.isMethod()
|| ctag.isInt() || ctag.isFloat())? true: false;
}
}
public boolean isKlassConstant() {
*** 105,115 ****
--- 114,124 ----
int jcode = javaCode();
if (jcode == Bytecodes._ldc2_w) {
return false;
}
! ConstantTag ctag = method().getConstants().getTagAt(index());
! ConstantTag ctag = method().getConstants().getTagAt(poolIndex());
return ctag.isKlass() || ctag.isUnresolvedKlass();
}
// return Symbol (if unresolved) or Klass (if resolved)
public Object getKlass() {
*** 118,128 ****
--- 127,137 ----
}
// tag change from 'unresolved' to 'klass' does not happen atomically.
// We just look at the object at the corresponding index and
// decide based on the oop type.
ConstantPool cpool = method().getConstants();
! int cpIndex = index();
! int cpIndex = poolIndex();
ConstantPool.CPSlot oop = cpool.getSlotAt(cpIndex);
if (oop.isOop()) {
return (Klass) oop.getOop();
} else if (oop.isMetaData()) {
return oop.getSymbol();
agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeLoadConstant.java
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