6939203: JSR 292 needs method handle constants
Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode.
Reviewed-by: twisti, never
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeDisassembler.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeDisassembler.java Wed Jun 09 18:50:45 2010 -0700
@@ -72,6 +72,7 @@
addBytecodeClass(Bytecodes._invokestatic, BytecodeInvoke.class);
addBytecodeClass(Bytecodes._invokespecial, BytecodeInvoke.class);
addBytecodeClass(Bytecodes._invokeinterface, BytecodeInvoke.class);
+ addBytecodeClass(Bytecodes._invokedynamic, BytecodeInvoke.class);
addBytecodeClass(Bytecodes._jsr, BytecodeJsr.class);
addBytecodeClass(Bytecodes._jsr_w, BytecodeJsrW.class);
addBytecodeClass(Bytecodes._iload, BytecodeLoad.class);
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.java Wed Jun 09 18:50:45 2010 -0700
@@ -54,15 +54,31 @@
// returns the name of the invoked method
public Symbol name() {
ConstantPool cp = method().getConstants();
+ if (isInvokedynamic()) {
+ int[] nt = cp.getNameAndTypeAt(indexForFieldOrMethod());
+ return cp.getSymbolAt(nt[0]);
+ }
return cp.getNameRefAt(index());
}
// returns the signature of the invoked method
public Symbol signature() {
ConstantPool cp = method().getConstants();
+ if (isInvokedynamic()) {
+ int[] nt = cp.getNameAndTypeAt(indexForFieldOrMethod());
+ return cp.getSymbolAt(nt[1]);
+ }
return cp.getSignatureRefAt(index());
}
+ public int getSecondaryIndex() {
+ if (isInvokedynamic()) {
+ // change byte-ordering of 4-byte integer
+ return VM.getVM().getBytes().swapInt(javaSignedWordAt(1));
+ }
+ return super.getSecondaryIndex(); // throw an error
+ }
+
public Method getInvokedMethod() {
return method().getConstants().getMethodRefAt(index());
}
@@ -87,6 +103,7 @@
public boolean isInvokevirtual() { return adjustedInvokeCode() == Bytecodes._invokevirtual; }
public boolean isInvokestatic() { return adjustedInvokeCode() == Bytecodes._invokestatic; }
public boolean isInvokespecial() { return adjustedInvokeCode() == Bytecodes._invokespecial; }
+ public boolean isInvokedynamic() { return adjustedInvokeCode() == Bytecodes._invokedynamic; }
public boolean isValid() { return isInvokeinterface() ||
isInvokevirtual() ||
@@ -104,6 +121,11 @@
buf.append(spaces);
buf.append('#');
buf.append(Integer.toString(indexForFieldOrMethod()));
+ if (isInvokedynamic()) {
+ buf.append('(');
+ buf.append(Integer.toString(getSecondaryIndex()));
+ buf.append(')');
+ }
buf.append(" [Method ");
StringBuffer sigBuf = new StringBuffer();
new SignatureConverter(signature(), sigBuf).iterateReturntype();
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeLoadConstant.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeLoadConstant.java Wed Jun 09 18:50:45 2010 -0700
@@ -25,6 +25,7 @@
package sun.jvm.hotspot.interpreter;
import sun.jvm.hotspot.oops.*;
+import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.utilities.*;
public class BytecodeLoadConstant extends BytecodeWithCPIndex {
@@ -32,10 +33,47 @@
super(method, bci);
}
+ public boolean hasCacheIndex() {
+ // normal ldc uses CP index, but fast_aldc uses swapped CP cache index
+ return javaCode() != code();
+ }
+
public int index() {
- return javaCode() == Bytecodes._ldc ?
+ 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;
+ }
+ }
+
+ public int poolIndex() {
+ int i = index();
+ if (hasCacheIndex()) {
+ ConstantPoolCache cpCache = method().getConstants().getCache();
+ return cpCache.getEntryAt(i).getConstantPoolIndex();
+ } else {
+ return i;
+ }
+ }
+
+ public int cacheIndex() {
+ if (hasCacheIndex()) {
+ return index();
+ } else {
+ return -1; // no cache index
+ }
+ }
+
+ private Oop getCachedConstant() {
+ int i = cacheIndex();
+ if (i >= 0) {
+ ConstantPoolCache cpCache = method().getConstants().getCache();
+ return cpCache.getEntryAt(i).getF1();
+ }
+ return null;
}
public void verify() {
@@ -58,6 +96,7 @@
// has to be int or float or String or Klass
return (ctag.isUnresolvedString() || ctag.isString()
|| ctag.isUnresolvedKlass() || ctag.isKlass()
+ || ctag.isMethodHandle() || ctag.isMethodType()
|| ctag.isInt() || ctag.isFloat())? true: false;
}
}
@@ -112,7 +151,7 @@
public String getConstantValue() {
ConstantPool cpool = method().getConstants();
- int cpIndex = index();
+ int cpIndex = poolIndex();
ConstantTag ctag = cpool.getTagAt(cpIndex);
if (ctag.isInt()) {
return "<int " + Integer.toString(cpool.getIntAt(cpIndex)) +">";
@@ -149,6 +188,18 @@
} else {
throw new RuntimeException("should not reach here");
}
+ } else if (ctag.isMethodHandle() || ctag.isMethodType()) {
+ Oop x = getCachedConstant();
+ int refidx = cpool.getMethodHandleIndexAt(cpIndex);
+ int refkind = cpool.getMethodHandleRefKindAt(cpIndex);
+ return "<MethodHandle kind=" + Integer.toString(refkind) +
+ " ref=" + Integer.toString(refidx)
+ + (x == null ? "" : " @" + x.getHandle()) + ">";
+ } else if (ctag.isMethodType()) {
+ Oop x = getCachedConstant();
+ int refidx = cpool.getMethodTypeIndexAt(cpIndex);
+ return "<MethodType " + cpool.getSymbolAt(refidx).asString()
+ + (x == null ? "" : " @" + x.getHandle()) + ">";
} else {
if (Assert.ASSERTS_ENABLED) {
Assert.that(false, "invalid load constant type");
@@ -162,7 +213,12 @@
buf.append(getJavaBytecodeName());
buf.append(spaces);
buf.append('#');
- buf.append(Integer.toString(index()));
+ buf.append(Integer.toString(poolIndex()));
+ if (hasCacheIndex()) {
+ buf.append('(');
+ buf.append(Integer.toString(cacheIndex()));
+ buf.append(')');
+ }
buf.append(spaces);
buf.append(getConstantValue());
if (code() != javaCode()) {
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeWithCPIndex.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeWithCPIndex.java Wed Jun 09 18:50:45 2010 -0700
@@ -37,12 +37,19 @@
// the constant pool index for this bytecode
public int index() { return 0xFFFF & javaShortAt(1); }
+ public int getSecondaryIndex() {
+ throw new IllegalArgumentException("must be invokedynamic");
+ }
+
protected int indexForFieldOrMethod() {
ConstantPoolCache cpCache = method().getConstants().getCache();
// get ConstantPool index from ConstantPoolCacheIndex at given bci
int cpCacheIndex = index();
if (cpCache == null) {
return cpCacheIndex;
+ } else if (code() == Bytecodes._invokedynamic) {
+ int secondaryIndex = getSecondaryIndex();
+ return cpCache.getMainEntryAt(secondaryIndex).getConstantPoolIndex();
} else {
// change byte-ordering and go via cache
return cpCache.getEntryAt((int) (0xFFFF & VM.getVM().getBytes().swapShort((short) cpCacheIndex))).getConstantPoolIndex();
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecodes.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/interpreter/Bytecodes.java Wed Jun 09 18:50:45 2010 -0700
@@ -222,7 +222,7 @@
public static final int _invokespecial = 183; // 0xb7
public static final int _invokestatic = 184; // 0xb8
public static final int _invokeinterface = 185; // 0xb9
- public static final int _xxxunusedxxx = 186; // 0xba
+ public static final int _invokedynamic = 186; // 0xba
public static final int _new = 187; // 0xbb
public static final int _newarray = 188; // 0xbc
public static final int _anewarray = 189; // 0xbd
@@ -269,9 +269,12 @@
public static final int _fast_invokevfinal = 226;
public static final int _fast_linearswitch = 227;
public static final int _fast_binaryswitch = 228;
- public static final int _shouldnotreachhere = 229; // For debugging
+ public static final int _fast_aldc = 229;
+ public static final int _fast_aldc_w = 230;
+ public static final int _return_register_finalizer = 231;
+ public static final int _shouldnotreachhere = 232; // For debugging
- public static final int number_of_codes = 230;
+ public static final int number_of_codes = 233;
public static int specialLengthAt(Method method, int bci) {
int code = codeAt(method, bci);
@@ -458,9 +461,9 @@
def(_dconst_1 , "dconst_1" , "b" , null , BasicType.getTDouble() , 2, false);
def(_bipush , "bipush" , "bc" , null , BasicType.getTInt() , 1, false);
def(_sipush , "sipush" , "bcc" , null , BasicType.getTInt() , 1, false);
- def(_ldc , "ldc" , "bi" , null , BasicType.getTIllegal(), 1, true );
- def(_ldc_w , "ldc_w" , "bii" , null , BasicType.getTIllegal(), 1, true );
- def(_ldc2_w , "ldc2_w" , "bii" , null , BasicType.getTIllegal(), 2, true );
+ def(_ldc , "ldc" , "bk" , null , BasicType.getTIllegal(), 1, true );
+ def(_ldc_w , "ldc_w" , "bkk" , null , BasicType.getTIllegal(), 1, true );
+ def(_ldc2_w , "ldc2_w" , "bkk" , null , BasicType.getTIllegal(), 2, true );
def(_iload , "iload" , "bi" , "wbii" , BasicType.getTInt() , 1, false);
def(_lload , "lload" , "bi" , "wbii" , BasicType.getTLong() , 2, false);
def(_fload , "fload" , "bi" , "wbii" , BasicType.getTFloat() , 1, false);
@@ -618,26 +621,26 @@
def(_dreturn , "dreturn" , "b" , null , BasicType.getTDouble() , -2, true );
def(_areturn , "areturn" , "b" , null , BasicType.getTObject() , -1, true );
def(_return , "return" , "b" , null , BasicType.getTVoid() , 0, true );
- def(_getstatic , "getstatic" , "bjj" , null , BasicType.getTIllegal(), 1, true );
- def(_putstatic , "putstatic" , "bjj" , null , BasicType.getTIllegal(), -1, true );
- def(_getfield , "getfield" , "bjj" , null , BasicType.getTIllegal(), 0, true );
- def(_putfield , "putfield" , "bjj" , null , BasicType.getTIllegal(), -2, true );
- def(_invokevirtual , "invokevirtual" , "bjj" , null , BasicType.getTIllegal(), -1, true );
- def(_invokespecial , "invokespecial" , "bjj" , null , BasicType.getTIllegal(), -1, true );
- def(_invokestatic , "invokestatic" , "bjj" , null , BasicType.getTIllegal(), 0, true );
- def(_invokeinterface , "invokeinterface" , "bjj__", null , BasicType.getTIllegal(), -1, true );
- def(_xxxunusedxxx , "xxxunusedxxx" , null , null , BasicType.getTVoid() , 0, false);
- def(_new , "new" , "bii" , null , BasicType.getTObject() , 1, true );
+ def(_getstatic , "getstatic" , "bJJ" , null , BasicType.getTIllegal(), 1, true );
+ def(_putstatic , "putstatic" , "bJJ" , null , BasicType.getTIllegal(), -1, true );
+ def(_getfield , "getfield" , "bJJ" , null , BasicType.getTIllegal(), 0, true );
+ def(_putfield , "putfield" , "bJJ" , null , BasicType.getTIllegal(), -2, true );
+ def(_invokevirtual , "invokevirtual" , "bJJ" , null , BasicType.getTIllegal(), -1, true );
+ def(_invokespecial , "invokespecial" , "bJJ" , null , BasicType.getTIllegal(), -1, true );
+ def(_invokestatic , "invokestatic" , "bJJ" , null , BasicType.getTIllegal(), 0, true );
+ def(_invokeinterface , "invokeinterface" , "bJJ__", null , BasicType.getTIllegal(), -1, true );
+ def(_invokedynamic , "invokedynamic" , "bJJJJ", null , BasicType.getTIllegal(), -1, true );
+ def(_new , "new" , "bkk" , null , BasicType.getTObject() , 1, true );
def(_newarray , "newarray" , "bc" , null , BasicType.getTObject() , 0, true );
- def(_anewarray , "anewarray" , "bii" , null , BasicType.getTObject() , 0, true );
+ def(_anewarray , "anewarray" , "bkk" , null , BasicType.getTObject() , 0, true );
def(_arraylength , "arraylength" , "b" , null , BasicType.getTVoid() , 0, true );
def(_athrow , "athrow" , "b" , null , BasicType.getTVoid() , -1, true );
- def(_checkcast , "checkcast" , "bii" , null , BasicType.getTObject() , 0, true );
- def(_instanceof , "instanceof" , "bii" , null , BasicType.getTInt() , 0, true );
+ def(_checkcast , "checkcast" , "bkk" , null , BasicType.getTObject() , 0, true );
+ def(_instanceof , "instanceof" , "bkk" , null , BasicType.getTInt() , 0, true );
def(_monitorenter , "monitorenter" , "b" , null , BasicType.getTVoid() , -1, true );
def(_monitorexit , "monitorexit" , "b" , null , BasicType.getTVoid() , -1, true );
def(_wide , "wide" , "" , null , BasicType.getTVoid() , 0, false);
- def(_multianewarray , "multianewarray" , "biic" , null , BasicType.getTObject() , 1, true );
+ def(_multianewarray , "multianewarray" , "bkkc" , null , BasicType.getTObject() , 1, true );
def(_ifnull , "ifnull" , "boo" , null , BasicType.getTVoid() , -1, false);
def(_ifnonnull , "ifnonnull" , "boo" , null , BasicType.getTVoid() , -1, false);
def(_goto_w , "goto_w" , "boooo", null , BasicType.getTVoid() , 0, false);
@@ -646,38 +649,44 @@
// JVM bytecodes
// bytecode bytecode name format wide f. result tp stk traps std code
- def(_fast_agetfield , "fast_agetfield" , "bjj" , null , BasicType.getTObject() , 0, true , _getfield );
- def(_fast_bgetfield , "fast_bgetfield" , "bjj" , null , BasicType.getTInt() , 0, true , _getfield );
- def(_fast_cgetfield , "fast_cgetfield" , "bjj" , null , BasicType.getTChar() , 0, true , _getfield );
- def(_fast_dgetfield , "fast_dgetfield" , "bjj" , null , BasicType.getTDouble() , 0, true , _getfield );
- def(_fast_fgetfield , "fast_fgetfield" , "bjj" , null , BasicType.getTFloat() , 0, true , _getfield );
- def(_fast_igetfield , "fast_igetfield" , "bjj" , null , BasicType.getTInt() , 0, true , _getfield );
- def(_fast_lgetfield , "fast_lgetfield" , "bjj" , null , BasicType.getTLong() , 0, true , _getfield );
- def(_fast_sgetfield , "fast_sgetfield" , "bjj" , null , BasicType.getTShort() , 0, true , _getfield );
+ def(_fast_agetfield , "fast_agetfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _getfield );
+ def(_fast_bgetfield , "fast_bgetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield );
+ def(_fast_cgetfield , "fast_cgetfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _getfield );
+ def(_fast_dgetfield , "fast_dgetfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _getfield );
+ def(_fast_fgetfield , "fast_fgetfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _getfield );
+ def(_fast_igetfield , "fast_igetfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _getfield );
+ def(_fast_lgetfield , "fast_lgetfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _getfield );
+ def(_fast_sgetfield , "fast_sgetfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _getfield );
- def(_fast_aputfield , "fast_aputfield" , "bjj" , null , BasicType.getTObject() , 0, true , _putfield );
- def(_fast_bputfield , "fast_bputfield" , "bjj" , null , BasicType.getTInt() , 0, true , _putfield );
- def(_fast_cputfield , "fast_cputfield" , "bjj" , null , BasicType.getTChar() , 0, true , _putfield );
- def(_fast_dputfield , "fast_dputfield" , "bjj" , null , BasicType.getTDouble() , 0, true , _putfield );
- def(_fast_fputfield , "fast_fputfield" , "bjj" , null , BasicType.getTFloat() , 0, true , _putfield );
- def(_fast_iputfield , "fast_iputfield" , "bjj" , null , BasicType.getTInt() , 0, true , _putfield );
- def(_fast_lputfield , "fast_lputfield" , "bjj" , null , BasicType.getTLong() , 0, true , _putfield );
- def(_fast_sputfield , "fast_sputfield" , "bjj" , null , BasicType.getTShort() , 0, true , _putfield );
+ def(_fast_aputfield , "fast_aputfield" , "bJJ" , null , BasicType.getTObject() , 0, true , _putfield );
+ def(_fast_bputfield , "fast_bputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield );
+ def(_fast_cputfield , "fast_cputfield" , "bJJ" , null , BasicType.getTChar() , 0, true , _putfield );
+ def(_fast_dputfield , "fast_dputfield" , "bJJ" , null , BasicType.getTDouble() , 0, true , _putfield );
+ def(_fast_fputfield , "fast_fputfield" , "bJJ" , null , BasicType.getTFloat() , 0, true , _putfield );
+ def(_fast_iputfield , "fast_iputfield" , "bJJ" , null , BasicType.getTInt() , 0, true , _putfield );
+ def(_fast_lputfield , "fast_lputfield" , "bJJ" , null , BasicType.getTLong() , 0, true , _putfield );
+ def(_fast_sputfield , "fast_sputfield" , "bJJ" , null , BasicType.getTShort() , 0, true , _putfield );
def(_fast_aload_0 , "fast_aload_0" , "b" , null , BasicType.getTObject() , 1, true , _aload_0 );
- def(_fast_iaccess_0 , "fast_iaccess_0" , "b_jj" , null , BasicType.getTInt() , 1, true , _aload_0 );
- def(_fast_aaccess_0 , "fast_aaccess_0" , "b_jj" , null , BasicType.getTObject() , 1, true , _aload_0 );
- def(_fast_faccess_0 , "fast_faccess_0" , "b_jj" , null , BasicType.getTObject() , 1, true , _aload_0 );
+ def(_fast_iaccess_0 , "fast_iaccess_0" , "b_JJ" , null , BasicType.getTInt() , 1, true , _aload_0 );
+ def(_fast_aaccess_0 , "fast_aaccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 );
+ def(_fast_faccess_0 , "fast_faccess_0" , "b_JJ" , null , BasicType.getTObject() , 1, true , _aload_0 );
def(_fast_iload , "fast_iload" , "bi" , null , BasicType.getTInt() , 1, false, _iload);
def(_fast_iload2 , "fast_iload2" , "bi_i" , null , BasicType.getTInt() , 2, false, _iload);
def(_fast_icaload , "fast_icaload" , "bi_" , null , BasicType.getTInt() , 0, false, _iload);
// Faster method invocation.
- def(_fast_invokevfinal , "fast_invokevfinal" , "bjj" , null , BasicType.getTIllegal(), -1, true, _invokevirtual);
+ def(_fast_invokevfinal , "fast_invokevfinal" , "bJJ" , null , BasicType.getTIllegal(), -1, true, _invokevirtual);
def(_fast_linearswitch , "fast_linearswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch );
def(_fast_binaryswitch , "fast_binaryswitch" , "" , null , BasicType.getTVoid() , -1, false, _lookupswitch );
+
+ def(_return_register_finalizer, "return_register_finalizer", "b" , null , BasicType.getTVoid() , 0, true, _return );
+
+ def(_fast_aldc , "fast_aldc" , "bj" , null , BasicType.getTObject(), 1, true, _ldc );
+ def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , null , BasicType.getTObject(), 1, true, _ldc_w );
+
def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , null , BasicType.getTVoid() , 0, false);
if (Assert.ASSERTS_ENABLED) {
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java Wed Jun 09 18:50:45 2010 -0700
@@ -152,7 +152,7 @@
return res;
}
- public int getNameAndTypeAt(int which) {
+ public int[] getNameAndTypeAt(int which) {
if (Assert.ASSERTS_ENABLED) {
Assert.that(getTagAt(which).isNameAndType(), "Corrupted constant pool");
}
@@ -160,18 +160,16 @@
if (DEBUG) {
System.err.println("ConstantPool.getNameAndTypeAt(" + which + "): result = " + i);
}
- return i;
+ return new int[] { extractLowShortFromInt(i), extractHighShortFromInt(i) };
}
public Symbol getNameRefAt(int which) {
- int refIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which));
- int nameIndex = extractLowShortFromInt(refIndex);
+ int nameIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which))[0];
return getSymbolAt(nameIndex);
}
public Symbol getSignatureRefAt(int which) {
- int refIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which));
- int sigIndex = extractHighShortFromInt(refIndex);
+ int sigIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which))[1];
return getSymbolAt(sigIndex);
}
@@ -220,11 +218,11 @@
/** Lookup for entries consisting of (name_index, signature_index) */
public int getNameRefIndexAt(int index) {
- int refIndex = getNameAndTypeAt(index);
+ int[] refIndex = getNameAndTypeAt(index);
if (DEBUG) {
- System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): refIndex = " + refIndex);
+ System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]);
}
- int i = extractLowShortFromInt(refIndex);
+ int i = refIndex[0];
if (DEBUG) {
System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): result = " + i);
}
@@ -233,17 +231,53 @@
/** Lookup for entries consisting of (name_index, signature_index) */
public int getSignatureRefIndexAt(int index) {
- int refIndex = getNameAndTypeAt(index);
+ int[] refIndex = getNameAndTypeAt(index);
if (DEBUG) {
- System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): refIndex = " + refIndex);
+ System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]);
}
- int i = extractHighShortFromInt(refIndex);
+ int i = refIndex[1];
if (DEBUG) {
System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): result = " + i);
}
return i;
}
+ /** Lookup for MethodHandle entries. */
+ public int getMethodHandleIndexAt(int i) {
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool");
+ }
+ int res = extractHighShortFromInt(getIntAt(i));
+ if (DEBUG) {
+ System.err.println("ConstantPool.getMethodHandleIndexAt(" + i + "): result = " + res);
+ }
+ return res;
+ }
+
+ /** Lookup for MethodHandle entries. */
+ public int getMethodHandleRefKindAt(int i) {
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool");
+ }
+ int res = extractLowShortFromInt(getIntAt(i));
+ if (DEBUG) {
+ System.err.println("ConstantPool.getMethodHandleRefKindAt(" + i + "): result = " + res);
+ }
+ return res;
+ }
+
+ /** Lookup for MethodType entries. */
+ public int getMethodTypeIndexAt(int i) {
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(getTagAt(i).isMethodType(), "Corrupted constant pool");
+ }
+ int res = getIntAt(i);
+ if (DEBUG) {
+ System.err.println("ConstantPool.getMethodHandleTypeAt(" + i + "): result = " + res);
+ }
+ return res;
+ }
+
final private static String[] nameForTag = new String[] {
};
@@ -261,6 +295,8 @@
case JVM_CONSTANT_Methodref: return "JVM_CONSTANT_Methodref";
case JVM_CONSTANT_InterfaceMethodref: return "JVM_CONSTANT_InterfaceMethodref";
case JVM_CONSTANT_NameAndType: return "JVM_CONSTANT_NameAndType";
+ case JVM_CONSTANT_MethodHandle: return "JVM_CONSTANT_MethodHandle";
+ case JVM_CONSTANT_MethodType: return "JVM_CONSTANT_MethodType";
case JVM_CONSTANT_Invalid: return "JVM_CONSTANT_Invalid";
case JVM_CONSTANT_UnresolvedClass: return "JVM_CONSTANT_UnresolvedClass";
case JVM_CONSTANT_UnresolvedClassInError: return "JVM_CONSTANT_UnresolvedClassInError";
@@ -317,6 +353,8 @@
case JVM_CONSTANT_Methodref:
case JVM_CONSTANT_InterfaceMethodref:
case JVM_CONSTANT_NameAndType:
+ case JVM_CONSTANT_MethodHandle:
+ case JVM_CONSTANT_MethodType:
visitor.doInt(new IntField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true);
break;
}
@@ -467,6 +505,18 @@
+ ", type = " + signatureIndex);
break;
}
+
+ case JVM_CONSTANT_MethodHandle: {
+ dos.writeByte(cpConstType);
+ int value = getIntAt(ci);
+ short nameIndex = (short) extractLowShortFromInt(value);
+ short signatureIndex = (short) extractHighShortFromInt(value);
+ dos.writeShort(nameIndex);
+ dos.writeShort(signatureIndex);
+ if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex
+ + ", type = " + signatureIndex);
+ break;
+ }
default:
throw new InternalError("unknown tag: " + cpConstType);
} // switch
@@ -488,10 +538,12 @@
//
private static int extractHighShortFromInt(int val) {
+ // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc.
return (val >> 16) & 0xFFFF;
}
private static int extractLowShortFromInt(int val) {
+ // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc.
return val & 0xFFFF;
}
}
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPoolCache.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPoolCache.java Wed Jun 09 18:50:45 2010 -0700
@@ -78,6 +78,31 @@
return new ConstantPoolCacheEntry(this, i);
}
+ public static boolean isSecondaryIndex(int i) { return (i < 0); }
+ public static int decodeSecondaryIndex(int i) { return isSecondaryIndex(i) ? ~i : i; }
+ public static int encodeSecondaryIndex(int i) { return !isSecondaryIndex(i) ? ~i : i; }
+
+ // secondary entries hold invokedynamic call site bindings
+ public ConstantPoolCacheEntry getSecondaryEntryAt(int i) {
+ ConstantPoolCacheEntry e = new ConstantPoolCacheEntry(this, decodeSecondaryIndex(i));
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(e.isSecondaryEntry(), "must be a secondary entry");
+ }
+ return e;
+ }
+
+ public ConstantPoolCacheEntry getMainEntryAt(int i) {
+ if (isSecondaryIndex(i)) {
+ // run through an extra level of indirection:
+ i = getSecondaryEntryAt(i).getMainEntryIndex();
+ }
+ ConstantPoolCacheEntry e = new ConstantPoolCacheEntry(this, i);
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(!e.isSecondaryEntry(), "must not be a secondary entry");
+ }
+ return e;
+ }
+
public int getIntAt(int entry, int fld) {
//alignObjectSize ?
long offset = baseOffset + /*alignObjectSize*/entry * elementSize + fld* getHeap().getIntSize();
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPoolCacheEntry.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPoolCacheEntry.java Wed Jun 09 18:50:45 2010 -0700
@@ -28,6 +28,7 @@
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.types.*;
+import sun.jvm.hotspot.utilities.*;
public class ConstantPoolCacheEntry {
private static long size;
@@ -67,9 +68,23 @@
}
public int getConstantPoolIndex() {
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(!isSecondaryEntry(), "must not be a secondary CP entry");
+ }
return (int) (getIndices() & 0xFFFF);
}
+ public boolean isSecondaryEntry() {
+ return (getIndices() & 0xFFFF) == 0;
+ }
+
+ public int getMainEntryIndex() {
+ if (Assert.ASSERTS_ENABLED) {
+ Assert.that(isSecondaryEntry(), "must be a secondary CP entry");
+ }
+ return (int) (getIndices() >>> 16);
+ }
+
private long getIndices() {
return cp.getHandle().getCIntegerAt(indices.getOffset() + offset, indices.getSize(), indices.isUnsigned());
}
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/GenerateOopMap.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/oops/GenerateOopMap.java Wed Jun 09 18:50:45 2010 -0700
@@ -566,6 +566,7 @@
case Bytecodes._invokespecial:
case Bytecodes._invokestatic:
case Bytecodes._invokeinterface:
+ case Bytecodes._invokedynamic:
// FIXME: print signature of referenced method (need more
// accessors in ConstantPool and ConstantPoolCache)
int idx = currentBC.getIndexBig();
@@ -605,6 +606,7 @@
case Bytecodes._invokespecial:
case Bytecodes._invokestatic:
case Bytecodes._invokeinterface:
+ case Bytecodes._invokedynamic:
// FIXME: print signature of referenced method (need more
// accessors in ConstantPool and ConstantPoolCache)
int idx = currentBC.getIndexBig();
@@ -1134,6 +1136,7 @@
case Bytecodes._invokespecial:
case Bytecodes._invokestatic:
case Bytecodes._invokeinterface:
+ case Bytecodes._invokedynamic:
_itr_send = itr;
_report_result_for_send = true;
break;
@@ -1379,6 +1382,7 @@
case Bytecodes._invokevirtual:
case Bytecodes._invokespecial: doMethod(false, false, itr.getIndexBig(), itr.bci()); break;
case Bytecodes._invokestatic: doMethod(true, false, itr.getIndexBig(), itr.bci()); break;
+ case Bytecodes._invokedynamic: doMethod(false, true, itr.getIndexBig(), itr.bci()); break;
case Bytecodes._invokeinterface: doMethod(false, true, itr.getIndexBig(), itr.bci()); break;
case Bytecodes._newarray:
case Bytecodes._anewarray: ppNewRef(vCTS, itr.bci()); break;
@@ -1725,7 +1729,7 @@
void doMethod (boolean is_static, boolean is_interface, int idx, int bci) {
// Dig up signature for field in constant pool
ConstantPool cp = _method.getConstants();
- int nameAndTypeIdx = cp.getNameAndTypeRefIndexAt(idx);
+ int nameAndTypeIdx = cp.getTagAt(idx).isNameAndType() ? idx : cp.getNameAndTypeRefIndexAt(idx);
int signatureIdx = cp.getSignatureRefIndexAt(nameAndTypeIdx);
Symbol signature = cp.getSymbolAt(signatureIdx);
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/runtime/ClassConstants.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/runtime/ClassConstants.java Wed Jun 09 18:50:45 2010 -0700
@@ -40,6 +40,19 @@
public static final int JVM_CONSTANT_Methodref = 10;
public static final int JVM_CONSTANT_InterfaceMethodref = 11;
public static final int JVM_CONSTANT_NameAndType = 12;
+ public static final int JVM_CONSTANT_MethodHandle = 15;
+ public static final int JVM_CONSTANT_MethodType = 16;
+
+ // JVM_CONSTANT_MethodHandle subtypes
+ public static final int JVM_REF_getField = 1;
+ public static final int JVM_REF_getStatic = 2;
+ public static final int JVM_REF_putField = 3;
+ public static final int JVM_REF_putStatic = 4;
+ public static final int JVM_REF_invokeVirtual = 5;
+ public static final int JVM_REF_invokeStatic = 6;
+ public static final int JVM_REF_invokeSpecial = 7;
+ public static final int JVM_REF_newInvokeSpecial = 8;
+ public static final int JVM_REF_invokeInterface = 9;
// HotSpot specific constant pool constant types.
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/jcore/ByteCodeRewriter.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/jcore/ByteCodeRewriter.java Wed Jun 09 18:50:45 2010 -0700
@@ -54,14 +54,34 @@
}
- protected short getConstantPoolIndex(int bci) {
+ protected short getConstantPoolIndex(int rawcode, int bci) {
// get ConstantPool index from ConstantPoolCacheIndex at given bci
- short cpCacheIndex = method.getBytecodeShortArg(bci);
+ String fmt = Bytecodes.format(rawcode);
+ int cpCacheIndex;
+ switch (fmt.length()) {
+ case 2: cpCacheIndex = method.getBytecodeByteArg(bci); break;
+ case 3: cpCacheIndex = method.getBytecodeShortArg(bci); break;
+ case 5:
+ if (fmt.indexOf("__") >= 0)
+ cpCacheIndex = method.getBytecodeShortArg(bci);
+ else
+ cpCacheIndex = method.getBytecodeIntArg(bci);
+ break;
+ default: throw new IllegalArgumentException();
+ }
if (cpCache == null) {
- return cpCacheIndex;
+ return (short) cpCacheIndex;
+ } else if (fmt.indexOf("JJJJ") >= 0) {
+ // change byte-ordering and go via secondary cache entry
+ return (short) cpCache.getMainEntryAt(bytes.swapInt(cpCacheIndex)).getConstantPoolIndex();
+ } else if (fmt.indexOf("JJ") >= 0) {
+ // change byte-ordering and go via cache
+ return (short) cpCache.getEntryAt((int) (0xFFFF & bytes.swapShort((short)cpCacheIndex))).getConstantPoolIndex();
+ } else if (fmt.indexOf("j") >= 0) {
+ // go via cache
+ return (short) cpCache.getEntryAt((int) (0xFF & cpCacheIndex)).getConstantPoolIndex();
} else {
- // change byte-ordering and go via cache
- return (short) cpCache.getEntryAt((int) (0xFFFF & bytes.swapShort(cpCacheIndex))).getConstantPoolIndex();
+ return (short) cpCacheIndex;
}
}
@@ -100,10 +120,31 @@
case Bytecodes._invokespecial:
case Bytecodes._invokestatic:
case Bytecodes._invokeinterface: {
- cpoolIndex = getConstantPoolIndex(bci + 1);
+ cpoolIndex = getConstantPoolIndex(hotspotcode, bci + 1);
writeShort(code, bci + 1, cpoolIndex);
break;
}
+
+ case Bytecodes._invokedynamic:
+ cpoolIndex = getConstantPoolIndex(hotspotcode, bci + 1);
+ writeShort(code, bci + 1, cpoolIndex);
+ writeShort(code, bci + 3, (short)0); // clear out trailing bytes
+ break;
+
+ case Bytecodes._ldc_w:
+ if (hotspotcode != bytecode) {
+ // fast_aldc_w puts constant in CP cache
+ cpoolIndex = getConstantPoolIndex(hotspotcode, bci + 1);
+ writeShort(code, bci + 1, cpoolIndex);
+ }
+ break;
+ case Bytecodes._ldc:
+ if (hotspotcode != bytecode) {
+ // fast_aldc puts constant in CP cache
+ cpoolIndex = getConstantPoolIndex(hotspotcode, bci + 1);
+ code[bci + 1] = (byte)(cpoolIndex);
+ }
+ break;
}
len = Bytecodes.lengthFor(bytecode);
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/jcore/ClassWriter.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/tools/jcore/ClassWriter.java Wed Jun 09 18:50:45 2010 -0700
@@ -61,10 +61,12 @@
protected short _signatureIndex;
protected static int extractHighShortFromInt(int val) {
+ // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc.
return (val >> 16) & 0xFFFF;
}
protected static int extractLowShortFromInt(int val) {
+ // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc.
return val & 0xFFFF;
}
@@ -297,6 +299,28 @@
+ ", type = " + signatureIndex);
break;
}
+
+ case JVM_CONSTANT_MethodHandle: {
+ dos.writeByte(cpConstType);
+ int value = cpool.getIntAt(ci);
+ short refIndex = (short) extractHighShortFromInt(value);
+ byte refKind = (byte) extractLowShortFromInt(value);
+ dos.writeByte(refKind);
+ dos.writeShort(refIndex);
+ if (DEBUG) debugMessage("CP[" + ci + "] = MH index = " + refIndex
+ + ", kind = " + refKind);
+ break;
+ }
+
+ case JVM_CONSTANT_MethodType: {
+ dos.writeByte(cpConstType);
+ int value = cpool.getIntAt(ci);
+ short refIndex = (short) value;
+ dos.writeShort(refIndex);
+ if (DEBUG) debugMessage("CP[" + ci + "] = MT index = " + refIndex);
+ break;
+ }
+
default:
throw new InternalError("Unknown tag: " + cpConstType);
} // switch
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/ui/classbrowser/HTMLGenerator.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/ui/classbrowser/HTMLGenerator.java Wed Jun 09 18:50:45 2010 -0700
@@ -572,6 +572,16 @@
buf.cell(Integer.toString(cpool.getIntAt(index)));
break;
+ case JVM_CONSTANT_MethodHandle:
+ buf.cell("JVM_CONSTANT_MethodHandle");
+ buf.cell(genLowHighShort(cpool.getIntAt(index)));
+ break;
+
+ case JVM_CONSTANT_MethodType:
+ buf.cell("JVM_CONSTANT_MethodType");
+ buf.cell(Integer.toString(cpool.getIntAt(index)));
+ break;
+
default:
throw new InternalError("unknown tag: " + ctag);
}
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/utilities/ConstantTag.java Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/utilities/ConstantTag.java Wed Jun 09 18:50:45 2010 -0700
@@ -38,12 +38,26 @@
private static int JVM_CONSTANT_Methodref = 10;
private static int JVM_CONSTANT_InterfaceMethodref = 11;
private static int JVM_CONSTANT_NameAndType = 12;
+ private static int JVM_CONSTANT_MethodHandle = 15; // JSR 292
+ private static int JVM_CONSTANT_MethodType = 16; // JSR 292
private static int JVM_CONSTANT_Invalid = 0; // For bad value initialization
private static int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use
private static int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool
private static int JVM_CONSTANT_UnresolvedString = 102; // Temporary tag until actual use
private static int JVM_CONSTANT_StringIndex = 103; // Temporary tag while constructing constant pool
private static int JVM_CONSTANT_UnresolvedClassInError = 104; // Resolution failed
+ private static int JVM_CONSTANT_Object = 105; // Required for BoundMethodHandle arguments.
+
+ // JVM_CONSTANT_MethodHandle subtypes //FIXME: connect these to data structure
+ private static int JVM_REF_getField = 1;
+ private static int JVM_REF_getStatic = 2;
+ private static int JVM_REF_putField = 3;
+ private static int JVM_REF_putStatic = 4;
+ private static int JVM_REF_invokeVirtual = 5;
+ private static int JVM_REF_invokeStatic = 6;
+ private static int JVM_REF_invokeSpecial = 7;
+ private static int JVM_REF_newInvokeSpecial = 8;
+ private static int JVM_REF_invokeInterface = 9;
private byte tag;
@@ -62,6 +76,8 @@
public boolean isDouble() { return tag == JVM_CONSTANT_Double; }
public boolean isNameAndType() { return tag == JVM_CONSTANT_NameAndType; }
public boolean isUtf8() { return tag == JVM_CONSTANT_Utf8; }
+ public boolean isMethodHandle() { return tag == JVM_CONSTANT_MethodHandle; }
+ public boolean isMethodType() { return tag == JVM_CONSTANT_MethodType; }
public boolean isInvalid() { return tag == JVM_CONSTANT_Invalid; }
@@ -73,6 +89,8 @@
public boolean isUnresolvedString() { return tag == JVM_CONSTANT_UnresolvedString; }
public boolean isStringIndex() { return tag == JVM_CONSTANT_StringIndex; }
+ public boolean isObject() { return tag == JVM_CONSTANT_Object; }
+
public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); }
public boolean isFieldOrMethod() { return isField() || isMethod() || isInterfaceMethod(); }
public boolean isSymbol() { return isUtf8(); }
--- a/hotspot/agent/src/share/classes/sun/jvm/hotspot/utilities/soql/sa.js Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/agent/src/share/classes/sun/jvm/hotspot/utilities/soql/sa.js Wed Jun 09 18:50:45 2010 -0700
@@ -825,6 +825,8 @@
}
writeln("");
disAsm.decode(new sapkg.interpreter.BytecodeVisitor() {
+ prologue: function(method) { },
+ epilogue: function() { },
visit: function(bytecode) {
if (hasLines) {
var line = method.getLineNumberFromBCI(bci);
--- a/hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/cpu/sparc/vm/templateTable_sparc.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -318,6 +318,31 @@
__ bind(exit);
}
+// Fast path for caching oop constants.
+// %%% We should use this to handle Class and String constants also.
+// %%% It will simplify the ldc/primitive path considerably.
+void TemplateTable::fast_aldc(bool wide) {
+ transition(vtos, atos);
+
+ if (!EnableMethodHandles) {
+ // We should not encounter this bytecode if !EnableMethodHandles.
+ // The verifier will stop it. However, if we get past the verifier,
+ // this will stop the thread in a reasonable way, without crashing the JVM.
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_IncompatibleClassChangeError));
+ // the call_VM checks for exception, so we should never return here.
+ __ should_not_reach_here();
+ return;
+ }
+
+ Register Rcache = G3_scratch;
+ Register Rscratch = G4_scratch;
+
+ resolve_cache_and_index(f1_oop, Otos_i, Rcache, Rscratch, wide ? sizeof(u2) : sizeof(u1));
+
+ __ verify_oop(Otos_i);
+}
+
void TemplateTable::ldc2_w() {
transition(vtos, vtos);
Label retry, resolved, Long, exit;
@@ -1994,6 +2019,8 @@
case Bytecodes::_invokestatic : // fall through
case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break;
case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break;
+ case Bytecodes::_fast_aldc : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break;
+ case Bytecodes::_fast_aldc_w : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break;
default : ShouldNotReachHere(); break;
}
// first time invocation - must resolve first
--- a/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -375,6 +375,32 @@
__ bind(Done);
}
+// Fast path for caching oop constants.
+// %%% We should use this to handle Class and String constants also.
+// %%% It will simplify the ldc/primitive path considerably.
+void TemplateTable::fast_aldc(bool wide) {
+ transition(vtos, atos);
+
+ if (!EnableMethodHandles) {
+ // We should not encounter this bytecode if !EnableMethodHandles.
+ // The verifier will stop it. However, if we get past the verifier,
+ // this will stop the thread in a reasonable way, without crashing the JVM.
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_IncompatibleClassChangeError));
+ // the call_VM checks for exception, so we should never return here.
+ __ should_not_reach_here();
+ return;
+ }
+
+ const Register cache = rcx;
+ const Register index = rdx;
+
+ resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1));
+ if (VerifyOops) {
+ __ verify_oop(rax);
+ }
+}
+
void TemplateTable::ldc2_w() {
transition(vtos, vtos);
Label Long, Done;
@@ -2055,6 +2081,8 @@
case Bytecodes::_invokestatic : // fall through
case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break;
case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break;
+ case Bytecodes::_fast_aldc : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break;
+ case Bytecodes::_fast_aldc_w : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc); break;
default : ShouldNotReachHere(); break;
}
__ movl(temp, (int)bytecode());
--- a/hotspot/src/cpu/x86/vm/templateTable_x86_64.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/cpu/x86/vm/templateTable_x86_64.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -389,6 +389,32 @@
__ bind(Done);
}
+// Fast path for caching oop constants.
+// %%% We should use this to handle Class and String constants also.
+// %%% It will simplify the ldc/primitive path considerably.
+void TemplateTable::fast_aldc(bool wide) {
+ transition(vtos, atos);
+
+ if (!EnableMethodHandles) {
+ // We should not encounter this bytecode if !EnableMethodHandles.
+ // The verifier will stop it. However, if we get past the verifier,
+ // this will stop the thread in a reasonable way, without crashing the JVM.
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_IncompatibleClassChangeError));
+ // the call_VM checks for exception, so we should never return here.
+ __ should_not_reach_here();
+ return;
+ }
+
+ const Register cache = rcx;
+ const Register index = rdx;
+
+ resolve_cache_and_index(f1_oop, rax, cache, index, wide ? sizeof(u2) : sizeof(u1));
+ if (VerifyOops) {
+ __ verify_oop(rax);
+ }
+}
+
void TemplateTable::ldc2_w() {
transition(vtos, vtos);
Label Long, Done;
@@ -2063,6 +2089,12 @@
case Bytecodes::_invokedynamic:
entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic);
break;
+ case Bytecodes::_fast_aldc:
+ entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
+ break;
+ case Bytecodes::_fast_aldc_w:
+ entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
+ break;
default:
ShouldNotReachHere();
break;
--- a/hotspot/src/share/vm/c1/c1_GraphBuilder.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/c1/c1_GraphBuilder.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -878,15 +878,12 @@
case T_OBJECT :
{
ciObject* obj = con.as_object();
- if (obj->is_klass()) {
- ciKlass* klass = obj->as_klass();
- if (!klass->is_loaded() || PatchALot) {
- patch_state = state()->copy();
- t = new ObjectConstant(obj);
- } else {
- t = new InstanceConstant(klass->java_mirror());
- }
+ if (!obj->is_loaded()
+ || (PatchALot && obj->klass() != ciEnv::current()->String_klass())) {
+ patch_state = state()->copy();
+ t = new ObjectConstant(obj);
} else {
+ assert(!obj->is_klass(), "must be java_mirror of klass");
t = new InstanceConstant(obj->as_instance());
}
break;
--- a/hotspot/src/share/vm/c1/c1_Runtime1.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/c1/c1_Runtime1.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -601,7 +601,7 @@
static klassOop resolve_field_return_klass(methodHandle caller, int bci, TRAPS) {
- Bytecode_field* field_access = Bytecode_field_at(caller(), caller->bcp_from(bci));
+ Bytecode_field* field_access = Bytecode_field_at(caller, bci);
// This can be static or non-static field access
Bytecodes::Code code = field_access->code();
@@ -721,7 +721,7 @@
Handle load_klass(THREAD, NULL); // oop needed by load_klass_patching code
if (stub_id == Runtime1::access_field_patching_id) {
- Bytecode_field* field_access = Bytecode_field_at(caller_method(), caller_method->bcp_from(bci));
+ Bytecode_field* field_access = Bytecode_field_at(caller_method, bci);
FieldAccessInfo result; // initialize class if needed
Bytecodes::Code code = field_access->code();
constantPoolHandle constants(THREAD, caller_method->constants());
@@ -781,11 +781,9 @@
case Bytecodes::_ldc:
case Bytecodes::_ldc_w:
{
- Bytecode_loadconstant* cc = Bytecode_loadconstant_at(caller_method(),
- caller_method->bcp_from(bci));
- klassOop resolved = caller_method->constants()->klass_at(cc->index(), CHECK);
- // ldc wants the java mirror.
- k = resolved->klass_part()->java_mirror();
+ Bytecode_loadconstant* cc = Bytecode_loadconstant_at(caller_method, bci);
+ k = cc->resolve_constant(CHECK);
+ assert(k != NULL && !k->is_klass(), "must be class mirror or other Java constant");
}
break;
default: Unimplemented();
@@ -816,6 +814,15 @@
// Return to the now deoptimized frame.
}
+ // If we are patching in a non-perm oop, make sure the nmethod
+ // is on the right list.
+ if (ScavengeRootsInCode && load_klass.not_null() && load_klass->is_scavengable()) {
+ MutexLockerEx ml_code (CodeCache_lock, Mutex::_no_safepoint_check_flag);
+ nmethod* nm = CodeCache::find_nmethod(caller_frame.pc());
+ guarantee(nm != NULL, "only nmethods can contain non-perm oops");
+ if (!nm->on_scavenge_root_list())
+ CodeCache::add_scavenge_root_nmethod(nm);
+ }
// Now copy code back
--- a/hotspot/src/share/vm/ci/ciCPCache.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciCPCache.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -44,13 +44,23 @@
// ciCPCache::is_f1_null_at
bool ciCPCache::is_f1_null_at(int index) {
VM_ENTRY_MARK;
- constantPoolCacheOop cpcache = (constantPoolCacheOop) get_oop();
- oop f1 = cpcache->secondary_entry_at(index)->f1();
+ oop f1 = entry_at(index)->f1();
return (f1 == NULL);
}
// ------------------------------------------------------------------
+// ciCPCache::get_pool_index
+int ciCPCache::get_pool_index(int index) {
+ VM_ENTRY_MARK;
+ ConstantPoolCacheEntry* e = entry_at(index);
+ if (e->is_secondary_entry())
+ e = entry_at(e->main_entry_index());
+ return e->constant_pool_index();
+}
+
+
+// ------------------------------------------------------------------
// ciCPCache::print
//
// Print debugging information about the cache.
--- a/hotspot/src/share/vm/ci/ciCPCache.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciCPCache.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -29,6 +29,18 @@
// Note: This class is called ciCPCache as ciConstantPoolCache is used
// for something different.
class ciCPCache : public ciObject {
+private:
+ constantPoolCacheOop get_cpCacheOop() { // must be called inside a VM_ENTRY_MARK
+ return (constantPoolCacheOop) get_oop();
+ }
+
+ ConstantPoolCacheEntry* entry_at(int i) {
+ int raw_index = i;
+ if (constantPoolCacheOopDesc::is_secondary_index(i))
+ raw_index = constantPoolCacheOopDesc::decode_secondary_index(i);
+ return get_cpCacheOop()->entry_at(raw_index);
+ }
+
public:
ciCPCache(constantPoolCacheHandle cpcache) : ciObject(cpcache) {}
@@ -41,5 +53,7 @@
bool is_f1_null_at(int index);
+ int get_pool_index(int index);
+
void print();
};
--- a/hotspot/src/share/vm/ci/ciClassList.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciClassList.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -85,6 +85,7 @@
friend class ciConstantPoolCache; \
friend class ciField; \
friend class ciConstant; \
+friend class ciCPCache; \
friend class ciFlags; \
friend class ciExceptionHandler; \
friend class ciCallProfile; \
--- a/hotspot/src/share/vm/ci/ciEnv.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciEnv.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -511,9 +511,22 @@
//
// Implementation of get_constant_by_index().
ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool,
- int index,
+ int pool_index, int cache_index,
ciInstanceKlass* accessor) {
+ bool ignore_will_link;
EXCEPTION_CONTEXT;
+ int index = pool_index;
+ if (cache_index >= 0) {
+ assert(index < 0, "only one kind of index at a time");
+ ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index);
+ index = cpc_entry->constant_pool_index();
+ oop obj = cpc_entry->f1();
+ if (obj != NULL) {
+ assert(obj->is_instance(), "must be an instance");
+ ciObject* ciobj = get_object(obj);
+ return ciConstant(T_OBJECT, ciobj);
+ }
+ }
constantTag tag = cpool->tag_at(index);
if (tag.is_int()) {
return ciConstant(T_INT, (jint)cpool->int_at(index));
@@ -540,8 +553,7 @@
return ciConstant(T_OBJECT, constant);
} else if (tag.is_klass() || tag.is_unresolved_klass()) {
// 4881222: allow ldc to take a class type
- bool ignore;
- ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore, accessor);
+ ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
record_out_of_memory_failure();
@@ -549,12 +561,26 @@
}
assert (klass->is_instance_klass() || klass->is_array_klass(),
"must be an instance or array klass ");
- return ciConstant(T_OBJECT, klass);
+ return ciConstant(T_OBJECT, klass->java_mirror());
} else if (tag.is_object()) {
oop obj = cpool->object_at(index);
assert(obj->is_instance(), "must be an instance");
ciObject* ciobj = get_object(obj);
return ciConstant(T_OBJECT, ciobj);
+ } else if (tag.is_method_type()) {
+ // must execute Java code to link this CP entry into cache[i].f1
+ ciSymbol* signature = get_object(cpool->method_type_signature_at(index))->as_symbol();
+ ciObject* ciobj = get_unloaded_method_type_constant(signature);
+ return ciConstant(T_OBJECT, ciobj);
+ } else if (tag.is_method_handle()) {
+ // must execute Java code to link this CP entry into cache[i].f1
+ int ref_kind = cpool->method_handle_ref_kind_at(index);
+ int callee_index = cpool->method_handle_klass_index_at(index);
+ ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
+ ciSymbol* name = get_object(cpool->method_handle_name_ref_at(index))->as_symbol();
+ ciSymbol* signature = get_object(cpool->method_handle_signature_ref_at(index))->as_symbol();
+ ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
+ return ciConstant(T_OBJECT, ciobj);
} else {
ShouldNotReachHere();
return ciConstant();
@@ -562,61 +588,15 @@
}
// ------------------------------------------------------------------
-// ciEnv::is_unresolved_string_impl
-//
-// Implementation of is_unresolved_string().
-bool ciEnv::is_unresolved_string_impl(instanceKlass* accessor, int index) const {
- EXCEPTION_CONTEXT;
- assert(accessor->is_linked(), "must be linked before accessing constant pool");
- constantPoolOop cpool = accessor->constants();
- constantTag tag = cpool->tag_at(index);
- return tag.is_unresolved_string();
-}
-
-// ------------------------------------------------------------------
-// ciEnv::is_unresolved_klass_impl
-//
-// Implementation of is_unresolved_klass().
-bool ciEnv::is_unresolved_klass_impl(instanceKlass* accessor, int index) const {
- EXCEPTION_CONTEXT;
- assert(accessor->is_linked(), "must be linked before accessing constant pool");
- constantPoolOop cpool = accessor->constants();
- constantTag tag = cpool->tag_at(index);
- return tag.is_unresolved_klass();
-}
-
-// ------------------------------------------------------------------
// ciEnv::get_constant_by_index
//
// Pull a constant out of the constant pool. How appropriate.
//
// Implementation note: this query is currently in no way cached.
ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool,
- int index,
+ int pool_index, int cache_index,
ciInstanceKlass* accessor) {
- GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, index, accessor);)
-}
-
-// ------------------------------------------------------------------
-// ciEnv::is_unresolved_string
-//
-// Check constant pool
-//
-// Implementation note: this query is currently in no way cached.
-bool ciEnv::is_unresolved_string(ciInstanceKlass* accessor,
- int index) const {
- GUARDED_VM_ENTRY(return is_unresolved_string_impl(accessor->get_instanceKlass(), index); )
-}
-
-// ------------------------------------------------------------------
-// ciEnv::is_unresolved_klass
-//
-// Check constant pool
-//
-// Implementation note: this query is currently in no way cached.
-bool ciEnv::is_unresolved_klass(ciInstanceKlass* accessor,
- int index) const {
- GUARDED_VM_ENTRY(return is_unresolved_klass_impl(accessor->get_instanceKlass(), index); )
+ GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
}
// ------------------------------------------------------------------
--- a/hotspot/src/share/vm/ci/ciEnv.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciEnv.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -116,12 +116,8 @@
bool& is_accessible,
ciInstanceKlass* loading_klass);
ciConstant get_constant_by_index(constantPoolHandle cpool,
- int constant_index,
+ int pool_index, int cache_index,
ciInstanceKlass* accessor);
- bool is_unresolved_string(ciInstanceKlass* loading_klass,
- int constant_index) const;
- bool is_unresolved_klass(ciInstanceKlass* loading_klass,
- int constant_index) const;
ciField* get_field_by_index(ciInstanceKlass* loading_klass,
int field_index);
ciMethod* get_method_by_index(constantPoolHandle cpool,
@@ -137,12 +133,8 @@
bool& is_accessible,
ciInstanceKlass* loading_klass);
ciConstant get_constant_by_index_impl(constantPoolHandle cpool,
- int constant_index,
+ int pool_index, int cache_index,
ciInstanceKlass* loading_klass);
- bool is_unresolved_string_impl (instanceKlass* loading_klass,
- int constant_index) const;
- bool is_unresolved_klass_impl (instanceKlass* loading_klass,
- int constant_index) const;
ciField* get_field_by_index_impl(ciInstanceKlass* loading_klass,
int field_index);
ciMethod* get_method_by_index_impl(constantPoolHandle cpool,
@@ -190,6 +182,25 @@
return _factory->get_unloaded_klass(accessing_klass, name, true);
}
+ // Get a ciKlass representing an unloaded klass mirror.
+ // Result is not necessarily unique, but will be unloaded.
+ ciInstance* get_unloaded_klass_mirror(ciKlass* type) {
+ return _factory->get_unloaded_klass_mirror(type);
+ }
+
+ // Get a ciInstance representing an unresolved method handle constant.
+ ciInstance* get_unloaded_method_handle_constant(ciKlass* holder,
+ ciSymbol* name,
+ ciSymbol* signature,
+ int ref_kind) {
+ return _factory->get_unloaded_method_handle_constant(holder, name, signature, ref_kind);
+ }
+
+ // Get a ciInstance representing an unresolved method type constant.
+ ciInstance* get_unloaded_method_type_constant(ciSymbol* signature) {
+ return _factory->get_unloaded_method_type_constant(signature);
+ }
+
// See if we already have an unloaded klass for the given name
// or return NULL if not.
ciKlass *check_get_unloaded_klass(ciKlass* accessing_klass, ciSymbol* name) {
--- a/hotspot/src/share/vm/ci/ciInstanceKlass.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciInstanceKlass.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -324,9 +324,11 @@
//
// Get the instance of java.lang.Class corresponding to this klass.
ciInstance* ciInstanceKlass::java_mirror() {
- assert(is_loaded(), "must be loaded");
if (_java_mirror == NULL) {
- _java_mirror = ciKlass::java_mirror();
+ if (!is_loaded())
+ _java_mirror = ciEnv::current()->get_unloaded_klass_mirror(this);
+ else
+ _java_mirror = ciKlass::java_mirror();
}
return _java_mirror;
}
--- a/hotspot/src/share/vm/ci/ciObjectFactory.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciObjectFactory.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -70,6 +70,7 @@
_unloaded_methods = new (arena) GrowableArray<ciMethod*>(arena, 4, 0, NULL);
_unloaded_klasses = new (arena) GrowableArray<ciKlass*>(arena, 8, 0, NULL);
+ _unloaded_instances = new (arena) GrowableArray<ciInstance*>(arena, 4, 0, NULL);
_return_addresses =
new (arena) GrowableArray<ciReturnAddress*>(arena, 8, 0, NULL);
}
@@ -443,6 +444,74 @@
return new_klass;
}
+
+//------------------------------------------------------------------
+// ciObjectFactory::get_unloaded_instance
+//
+// Get a ciInstance representing an as-yet undetermined instance of a given class.
+//
+ciInstance* ciObjectFactory::get_unloaded_instance(ciInstanceKlass* instance_klass) {
+ for (int i=0; i<_unloaded_instances->length(); i++) {
+ ciInstance* entry = _unloaded_instances->at(i);
+ if (entry->klass()->equals(instance_klass)) {
+ // We've found a match.
+ return entry;
+ }
+ }
+
+ // This is a new unloaded instance. Create it and stick it in
+ // the cache.
+ ciInstance* new_instance = new (arena()) ciInstance(instance_klass);
+
+ init_ident_of(new_instance);
+ _unloaded_instances->append(new_instance);
+
+ // make sure it looks the way we want:
+ assert(!new_instance->is_loaded(), "");
+ assert(new_instance->klass() == instance_klass, "");
+
+ return new_instance;
+}
+
+
+//------------------------------------------------------------------
+// ciObjectFactory::get_unloaded_klass_mirror
+//
+// Get a ciInstance representing an unresolved klass mirror.
+//
+// Currently, this ignores the parameters and returns a unique unloaded instance.
+ciInstance* ciObjectFactory::get_unloaded_klass_mirror(ciKlass* type) {
+ assert(ciEnv::_Class_klass != NULL, "");
+ return get_unloaded_instance(ciEnv::_Class_klass->as_instance_klass());
+}
+
+//------------------------------------------------------------------
+// ciObjectFactory::get_unloaded_method_handle_constant
+//
+// Get a ciInstance representing an unresolved method handle constant.
+//
+// Currently, this ignores the parameters and returns a unique unloaded instance.
+ciInstance* ciObjectFactory::get_unloaded_method_handle_constant(ciKlass* holder,
+ ciSymbol* name,
+ ciSymbol* signature,
+ int ref_kind) {
+ if (ciEnv::_MethodHandle_klass == NULL) return NULL;
+ return get_unloaded_instance(ciEnv::_MethodHandle_klass->as_instance_klass());
+}
+
+//------------------------------------------------------------------
+// ciObjectFactory::get_unloaded_method_type_constant
+//
+// Get a ciInstance representing an unresolved method type constant.
+//
+// Currently, this ignores the parameters and returns a unique unloaded instance.
+ciInstance* ciObjectFactory::get_unloaded_method_type_constant(ciSymbol* signature) {
+ if (ciEnv::_MethodType_klass == NULL) return NULL;
+ return get_unloaded_instance(ciEnv::_MethodType_klass->as_instance_klass());
+}
+
+
+
//------------------------------------------------------------------
// ciObjectFactory::get_empty_methodData
//
@@ -637,7 +706,8 @@
//
// Print debugging information about the object factory
void ciObjectFactory::print() {
- tty->print("<ciObjectFactory oops=%d unloaded_methods=%d unloaded_klasses=%d>",
+ tty->print("<ciObjectFactory oops=%d unloaded_methods=%d unloaded_instances=%d unloaded_klasses=%d>",
_ci_objects->length(), _unloaded_methods->length(),
+ _unloaded_instances->length(),
_unloaded_klasses->length());
}
--- a/hotspot/src/share/vm/ci/ciObjectFactory.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciObjectFactory.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -39,6 +39,7 @@
GrowableArray<ciObject*>* _ci_objects;
GrowableArray<ciMethod*>* _unloaded_methods;
GrowableArray<ciKlass*>* _unloaded_klasses;
+ GrowableArray<ciInstance*>* _unloaded_instances;
GrowableArray<ciReturnAddress*>* _return_addresses;
int _next_ident;
@@ -73,6 +74,8 @@
void print_contents_impl();
+ ciInstance* get_unloaded_instance(ciInstanceKlass* klass);
+
public:
static bool is_initialized() { return _initialized; }
@@ -98,6 +101,18 @@
ciSymbol* name,
bool create_if_not_found);
+ // Get a ciInstance representing an unresolved klass mirror.
+ ciInstance* get_unloaded_klass_mirror(ciKlass* type);
+
+ // Get a ciInstance representing an unresolved method handle constant.
+ ciInstance* get_unloaded_method_handle_constant(ciKlass* holder,
+ ciSymbol* name,
+ ciSymbol* signature,
+ int ref_kind);
+
+ // Get a ciInstance representing an unresolved method type constant.
+ ciInstance* get_unloaded_method_type_constant(ciSymbol* signature);
+
// Get the ciMethodData representing the methodData for a method
// with none.
--- a/hotspot/src/share/vm/ci/ciStreams.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciStreams.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -186,12 +186,13 @@
}
// ------------------------------------------------------------------
-// ciBytecodeStream::get_constant_index
+// ciBytecodeStream::get_constant_raw_index
//
// If this bytecode is one of the ldc variants, get the index of the
// referenced constant.
-int ciBytecodeStream::get_constant_index() const {
- switch(cur_bc()) {
+int ciBytecodeStream::get_constant_raw_index() const {
+ // work-alike for Bytecode_loadconstant::raw_index()
+ switch (cur_bc()) {
case Bytecodes::_ldc:
return get_index_u1();
case Bytecodes::_ldc_w:
@@ -202,25 +203,52 @@
return 0;
}
}
+
+// ------------------------------------------------------------------
+// ciBytecodeStream::get_constant_pool_index
+// Decode any CP cache index into a regular pool index.
+int ciBytecodeStream::get_constant_pool_index() const {
+ // work-alike for Bytecode_loadconstant::pool_index()
+ int index = get_constant_raw_index();
+ if (has_cache_index()) {
+ return get_cpcache()->get_pool_index(index);
+ }
+ return index;
+}
+
+// ------------------------------------------------------------------
+// ciBytecodeStream::get_constant_cache_index
+// Return the CP cache index, or -1 if there isn't any.
+int ciBytecodeStream::get_constant_cache_index() const {
+ // work-alike for Bytecode_loadconstant::cache_index()
+ return has_cache_index() ? get_constant_raw_index() : -1;
+}
+
// ------------------------------------------------------------------
// ciBytecodeStream::get_constant
//
// If this bytecode is one of the ldc variants, get the referenced
// constant.
ciConstant ciBytecodeStream::get_constant() {
+ int pool_index = get_constant_raw_index();
+ int cache_index = -1;
+ if (has_cache_index()) {
+ cache_index = pool_index;
+ pool_index = -1;
+ }
VM_ENTRY_MARK;
constantPoolHandle cpool(_method->get_methodOop()->constants());
- return CURRENT_ENV->get_constant_by_index(cpool, get_constant_index(), _holder);
+ return CURRENT_ENV->get_constant_by_index(cpool, pool_index, cache_index, _holder);
}
// ------------------------------------------------------------------
-bool ciBytecodeStream::is_unresolved_string() const {
- return CURRENT_ENV->is_unresolved_string(_holder, get_constant_index());
-}
-
-// ------------------------------------------------------------------
-bool ciBytecodeStream::is_unresolved_klass() const {
- return CURRENT_ENV->is_unresolved_klass(_holder, get_klass_index());
+// ciBytecodeStream::get_constant_pool_tag
+//
+// If this bytecode is one of the ldc variants, get the referenced
+// constant.
+constantTag ciBytecodeStream::get_constant_pool_tag(int index) const {
+ VM_ENTRY_MARK;
+ return _method->get_methodOop()->constants()->tag_at(index);
}
// ------------------------------------------------------------------
@@ -378,13 +406,16 @@
// ------------------------------------------------------------------
// ciBytecodeStream::get_cpcache
-ciCPCache* ciBytecodeStream::get_cpcache() {
- VM_ENTRY_MARK;
- // Get the constant pool.
- constantPoolOop cpool = _holder->get_instanceKlass()->constants();
- constantPoolCacheOop cpcache = cpool->cache();
+ciCPCache* ciBytecodeStream::get_cpcache() const {
+ if (_cpcache == NULL) {
+ VM_ENTRY_MARK;
+ // Get the constant pool.
+ constantPoolOop cpool = _holder->get_instanceKlass()->constants();
+ constantPoolCacheOop cpcache = cpool->cache();
- return CURRENT_ENV->get_object(cpcache)->as_cpcache();
+ *(ciCPCache**)&_cpcache = CURRENT_ENV->get_object(cpcache)->as_cpcache();
+ }
+ return _cpcache;
}
// ------------------------------------------------------------------
--- a/hotspot/src/share/vm/ci/ciStreams.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/ci/ciStreams.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -46,6 +46,7 @@
ciMethod* _method; // the method
ciInstanceKlass* _holder;
+ ciCPCache* _cpcache;
address _bc_start; // Start of current bytecode for table
address _was_wide; // Address past last wide bytecode
jint* _table_base; // Aligned start of last table or switch
@@ -58,7 +59,9 @@
void reset( address base, unsigned int size ) {
_bc_start =_was_wide = 0;
- _start = _pc = base; _end = base + size; }
+ _start = _pc = base; _end = base + size;
+ _cpcache = NULL;
+ }
void assert_wide(bool require_wide) const {
if (require_wide)
@@ -136,15 +139,20 @@
bool is_wide() const { return ( _pc == _was_wide ); }
// Does this instruction contain an index which refes into the CP cache?
- bool uses_cp_cache() const { return Bytecodes::uses_cp_cache(cur_bc_raw()); }
+ bool has_cache_index() const { return Bytecodes::uses_cp_cache(cur_bc_raw()); }
int get_index_u1() const {
return bytecode()->get_index_u1(cur_bc_raw());
}
+ int get_index_u1_cpcache() const {
+ return bytecode()->get_index_u1_cpcache(cur_bc_raw());
+ }
+
// Get a byte index following this bytecode.
// If prefixed with a wide bytecode, get a wide index.
int get_index() const {
+ assert(!has_cache_index(), "else use cpcache variant");
return (_pc == _was_wide) // was widened?
? get_index_u2(true) // yes, return wide index
: get_index_u1(); // no, return narrow index
@@ -207,7 +215,9 @@
return cur_bci() + get_int_table(index); }
// --- Constant pool access ---
- int get_constant_index() const;
+ int get_constant_raw_index() const;
+ int get_constant_pool_index() const;
+ int get_constant_cache_index() const;
int get_field_index();
int get_method_index();
@@ -217,12 +227,17 @@
int get_klass_index() const;
// If this bytecode is one of the ldc variants, get the referenced
- // constant
+ // constant. Do not attempt to resolve it, since that would require
+ // execution of Java code. If it is not resolved, return an unloaded
+ // object (ciConstant.as_object()->is_loaded() == false).
ciConstant get_constant();
- // True if the ldc variant points to an unresolved string
- bool is_unresolved_string() const;
- // True if the ldc variant points to an unresolved klass
- bool is_unresolved_klass() const;
+ constantTag get_constant_pool_tag(int index) const;
+
+ // True if the klass-using bytecode points to an unresolved klass
+ bool is_unresolved_klass() const {
+ constantTag tag = get_constant_pool_tag(get_klass_index());
+ return tag.is_unresolved_klass();
+ }
// If this bytecode is one of get_field, get_static, put_field,
// or put_static, get the referenced field.
@@ -238,7 +253,7 @@
int get_method_holder_index();
int get_method_signature_index();
- ciCPCache* get_cpcache();
+ ciCPCache* get_cpcache() const;
ciCallSite* get_call_site();
};
--- a/hotspot/src/share/vm/classfile/classFileParser.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/classfile/classFileParser.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -113,6 +113,29 @@
cp->string_index_at_put(index, string_index);
}
break;
+ case JVM_CONSTANT_MethodHandle :
+ case JVM_CONSTANT_MethodType :
+ if (!EnableMethodHandles ||
+ _major_version < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) {
+ classfile_parse_error(
+ (!EnableInvokeDynamic ?
+ "This JVM does not support constant tag %u in class file %s" :
+ "Class file version does not support constant tag %u in class file %s"),
+ tag, CHECK);
+ }
+ if (tag == JVM_CONSTANT_MethodHandle) {
+ cfs->guarantee_more(4, CHECK); // ref_kind, method_index, tag/access_flags
+ u1 ref_kind = cfs->get_u1_fast();
+ u2 method_index = cfs->get_u2_fast();
+ cp->method_handle_index_at_put(index, ref_kind, method_index);
+ } else if (tag == JVM_CONSTANT_MethodType) {
+ cfs->guarantee_more(3, CHECK); // signature_index, tag/access_flags
+ u2 signature_index = cfs->get_u2_fast();
+ cp->method_type_index_at_put(index, signature_index);
+ } else {
+ ShouldNotReachHere();
+ }
+ break;
case JVM_CONSTANT_Integer :
{
cfs->guarantee_more(5, CHECK); // bytes, tag/access_flags
@@ -333,6 +356,60 @@
cp->unresolved_string_at_put(index, sym);
}
break;
+ case JVM_CONSTANT_MethodHandle :
+ {
+ int ref_index = cp->method_handle_index_at(index);
+ check_property(
+ valid_cp_range(ref_index, length) &&
+ EnableMethodHandles,
+ "Invalid constant pool index %u in class file %s",
+ ref_index, CHECK_(nullHandle));
+ constantTag tag = cp->tag_at(ref_index);
+ int ref_kind = cp->method_handle_ref_kind_at(index);
+ switch (ref_kind) {
+ case JVM_REF_getField:
+ case JVM_REF_getStatic:
+ case JVM_REF_putField:
+ case JVM_REF_putStatic:
+ check_property(
+ tag.is_field(),
+ "Invalid constant pool index %u in class file %s (not a field)",
+ ref_index, CHECK_(nullHandle));
+ break;
+ case JVM_REF_invokeVirtual:
+ case JVM_REF_invokeStatic:
+ case JVM_REF_invokeSpecial:
+ case JVM_REF_newInvokeSpecial:
+ check_property(
+ tag.is_method(),
+ "Invalid constant pool index %u in class file %s (not a method)",
+ ref_index, CHECK_(nullHandle));
+ break;
+ case JVM_REF_invokeInterface:
+ check_property(
+ tag.is_interface_method(),
+ "Invalid constant pool index %u in class file %s (not an interface method)",
+ ref_index, CHECK_(nullHandle));
+ break;
+ default:
+ classfile_parse_error(
+ "Bad method handle kind at constant pool index %u in class file %s",
+ index, CHECK_(nullHandle));
+ }
+ // Keep the ref_index unchanged. It will be indirected at link-time.
+ }
+ break;
+ case JVM_CONSTANT_MethodType :
+ {
+ int ref_index = cp->method_type_index_at(index);
+ check_property(
+ valid_cp_range(ref_index, length) &&
+ cp->tag_at(ref_index).is_utf8() &&
+ EnableMethodHandles,
+ "Invalid constant pool index %u in class file %s",
+ ref_index, CHECK_(nullHandle));
+ }
+ break;
default:
fatal(err_msg("bad constant pool tag value %u",
cp->tag_at(index).value()));
@@ -416,6 +493,43 @@
}
break;
}
+ case JVM_CONSTANT_MethodHandle: {
+ int ref_index = cp->method_handle_index_at(index);
+ int ref_kind = cp->method_handle_ref_kind_at(index);
+ switch (ref_kind) {
+ case JVM_REF_invokeVirtual:
+ case JVM_REF_invokeStatic:
+ case JVM_REF_invokeSpecial:
+ case JVM_REF_newInvokeSpecial:
+ {
+ int name_and_type_ref_index = cp->name_and_type_ref_index_at(ref_index);
+ int name_ref_index = cp->name_ref_index_at(name_and_type_ref_index);
+ symbolHandle name(THREAD, cp->symbol_at(name_ref_index));
+ if (ref_kind == JVM_REF_newInvokeSpecial) {
+ if (name() != vmSymbols::object_initializer_name()) {
+ classfile_parse_error(
+ "Bad constructor name at constant pool index %u in class file %s",
+ name_ref_index, CHECK_(nullHandle));
+ }
+ } else {
+ if (name() == vmSymbols::object_initializer_name()) {
+ classfile_parse_error(
+ "Bad method name at constant pool index %u in class file %s",
+ name_ref_index, CHECK_(nullHandle));
+ }
+ }
+ }
+ break;
+ // Other ref_kinds are already fully checked in previous pass.
+ }
+ break;
+ }
+ case JVM_CONSTANT_MethodType: {
+ symbolHandle no_name = vmSymbolHandles::type_name(); // place holder
+ symbolHandle signature(THREAD, cp->method_type_signature_at(index));
+ verify_legal_method_signature(no_name, signature, CHECK_(nullHandle));
+ break;
+ }
} // end of switch
} // end of for
@@ -431,7 +545,7 @@
case JVM_CONSTANT_UnresolvedClass :
// Patching a class means pre-resolving it.
// The name in the constant pool is ignored.
- if (patch->klass() == SystemDictionary::Class_klass()) { // %%% java_lang_Class::is_instance
+ if (java_lang_Class::is_instance(patch())) {
guarantee_property(!java_lang_Class::is_primitive(patch()),
"Illegal class patch at %d in class file %s",
index, CHECK);
--- a/hotspot/src/share/vm/classfile/systemDictionary.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/classfile/systemDictionary.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -2454,6 +2454,48 @@
return Handle(THREAD, (oop) result.get_jobject());
}
+// Ask Java code to find or construct a method handle constant.
+Handle SystemDictionary::link_method_handle_constant(KlassHandle caller,
+ int ref_kind, //e.g., JVM_REF_invokeVirtual
+ KlassHandle callee,
+ symbolHandle name_sym,
+ symbolHandle signature,
+ TRAPS) {
+ Handle empty;
+ Handle name = java_lang_String::create_from_symbol(name_sym(), CHECK_(empty));
+ Handle type;
+ if (signature->utf8_length() > 0 && signature->byte_at(0) == '(') {
+ bool ignore_is_on_bcp = false;
+ type = find_method_handle_type(signature, caller, ignore_is_on_bcp, CHECK_(empty));
+ } else {
+ SignatureStream ss(signature(), false);
+ if (!ss.is_done()) {
+ oop mirror = ss.as_java_mirror(caller->class_loader(), caller->protection_domain(),
+ SignatureStream::NCDFError, CHECK_(empty));
+ type = Handle(THREAD, mirror);
+ ss.next();
+ if (!ss.is_done()) type = Handle(); // error!
+ }
+ }
+ if (type.is_null()) {
+ THROW_MSG_(vmSymbols::java_lang_LinkageError(), "bad signature", empty);
+ }
+
+ // call sun.dyn.MethodHandleNatives::linkMethodHandleConstant(Class caller, int refKind, Class callee, String name, Object type) -> MethodHandle
+ JavaCallArguments args;
+ args.push_oop(caller->java_mirror()); // the referring class
+ args.push_int(ref_kind);
+ args.push_oop(callee->java_mirror()); // the target class
+ args.push_oop(name());
+ args.push_oop(type());
+ JavaValue result(T_OBJECT);
+ JavaCalls::call_static(&result,
+ SystemDictionary::MethodHandleNatives_klass(),
+ vmSymbols::linkMethodHandleConstant_name(),
+ vmSymbols::linkMethodHandleConstant_signature(),
+ &args, CHECK_(empty));
+ return Handle(THREAD, (oop) result.get_jobject());
+}
// Ask Java code to find or construct a java.dyn.CallSite for the given
// name and signature, as interpreted relative to the given class loader.
--- a/hotspot/src/share/vm/classfile/systemDictionary.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/classfile/systemDictionary.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -473,6 +473,13 @@
KlassHandle accessing_klass,
bool& return_bcp_flag,
TRAPS);
+ // ask Java to compute a java.dyn.MethodHandle object for a given CP entry
+ static Handle link_method_handle_constant(KlassHandle caller,
+ int ref_kind, //e.g., JVM_REF_invokeVirtual
+ KlassHandle callee,
+ symbolHandle name,
+ symbolHandle signature,
+ TRAPS);
// ask Java to create a dynamic call site, while linking an invokedynamic op
static Handle make_dynamic_call_site(Handle bootstrap_method,
// Callee information:
--- a/hotspot/src/share/vm/classfile/verifier.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/classfile/verifier.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -1598,7 +1598,10 @@
if (opcode == Bytecodes::_ldc || opcode == Bytecodes::_ldc_w) {
if (!tag.is_unresolved_string() && !tag.is_unresolved_klass()) {
types = (1 << JVM_CONSTANT_Integer) | (1 << JVM_CONSTANT_Float)
- | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class);
+ | (1 << JVM_CONSTANT_String) | (1 << JVM_CONSTANT_Class)
+ | (1 << JVM_CONSTANT_MethodHandle) | (1 << JVM_CONSTANT_MethodType);
+ // Note: The class file parser already verified the legality of
+ // MethodHandle and MethodType constants.
verify_cp_type(index, cp, types, CHECK_VERIFY(this));
}
} else {
@@ -1632,6 +1635,14 @@
current_frame->push_stack_2(
VerificationType::long_type(),
VerificationType::long2_type(), CHECK_VERIFY(this));
+ } else if (tag.is_method_handle()) {
+ current_frame->push_stack(
+ VerificationType::reference_type(
+ vmSymbols::java_dyn_MethodHandle()), CHECK_VERIFY(this));
+ } else if (tag.is_method_type()) {
+ current_frame->push_stack(
+ VerificationType::reference_type(
+ vmSymbols::java_dyn_MethodType()), CHECK_VERIFY(this));
} else {
verify_error(bci, "Invalid index in ldc");
return;
@@ -1920,9 +1931,12 @@
// Get referenced class type
VerificationType ref_class_type;
if (opcode == Bytecodes::_invokedynamic) {
- if (!EnableInvokeDynamic) {
+ if (!EnableInvokeDynamic ||
+ _klass->major_version() < Verifier::INVOKEDYNAMIC_MAJOR_VERSION) {
class_format_error(
- "invokedynamic instructions not enabled on this JVM",
+ (!EnableInvokeDynamic ?
+ "invokedynamic instructions not enabled in this JVM" :
+ "invokedynamic instructions not supported by this class file version"),
_klass->external_name());
return;
}
--- a/hotspot/src/share/vm/classfile/verifier.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/classfile/verifier.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -25,7 +25,10 @@
// The verifier class
class Verifier : AllStatic {
public:
- enum { STACKMAP_ATTRIBUTE_MAJOR_VERSION = 50 };
+ enum {
+ STACKMAP_ATTRIBUTE_MAJOR_VERSION = 50,
+ INVOKEDYNAMIC_MAJOR_VERSION = 51
+ };
typedef enum { ThrowException, NoException } Mode;
/**
--- a/hotspot/src/share/vm/classfile/vmSymbols.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/classfile/vmSymbols.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -246,6 +246,8 @@
/* internal up-calls made only by the JVM, via class sun.dyn.MethodHandleNatives: */ \
template(findMethodHandleType_name, "findMethodHandleType") \
template(findMethodHandleType_signature, "(Ljava/lang/Class;[Ljava/lang/Class;)Ljava/dyn/MethodType;") \
+ template(linkMethodHandleConstant_name, "linkMethodHandleConstant") \
+ template(linkMethodHandleConstant_signature, "(Ljava/lang/Class;ILjava/lang/Class;Ljava/lang/String;Ljava/lang/Object;)Ljava/dyn/MethodHandle;") \
template(makeDynamicCallSite_name, "makeDynamicCallSite") \
template(makeDynamicCallSite_signature, "(Ljava/dyn/MethodHandle;Ljava/lang/String;Ljava/dyn/MethodType;Ljava/lang/Object;Lsun/dyn/MemberName;I)Ljava/dyn/CallSite;") \
NOT_LP64( do_alias(machine_word_signature, int_signature) ) \
--- a/hotspot/src/share/vm/code/nmethod.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/code/nmethod.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -2659,13 +2659,10 @@
case Bytecodes::_getstatic:
case Bytecodes::_putstatic:
{
- methodHandle sdm = sd->method();
- Bytecode_field* field = Bytecode_field_at(sdm(), sdm->bcp_from(sd->bci()));
- constantPoolOop sdmc = sdm->constants();
- symbolOop name = sdmc->name_ref_at(field->index());
+ Bytecode_field* field = Bytecode_field_at(sd->method(), sd->bci());
st->print(" ");
- if (name != NULL)
- name->print_symbol_on(st);
+ if (field->name() != NULL)
+ field->name()->print_symbol_on(st);
else
st->print("<UNKNOWN>");
}
--- a/hotspot/src/share/vm/includeDB_core Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/includeDB_core Wed Jun 09 18:50:45 2010 -0700
@@ -545,6 +545,7 @@
ciCPCache.hpp ciClassList.hpp
ciCPCache.hpp ciObject.hpp
+ciCPCache.hpp cpCacheOop.hpp
ciEnv.cpp allocation.inline.hpp
ciEnv.cpp ciConstant.hpp
@@ -823,6 +824,7 @@
ciStreams.cpp ciCallSite.hpp
ciStreams.cpp ciConstant.hpp
+ciStreams.cpp ciCPCache.hpp
ciStreams.cpp ciField.hpp
ciStreams.cpp ciStreams.hpp
ciStreams.cpp ciUtilities.hpp
--- a/hotspot/src/share/vm/interpreter/bytecode.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/bytecode.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -136,25 +136,24 @@
// Implementation of Bytecode_invoke
void Bytecode_invoke::verify() const {
- Bytecodes::Code bc = adjusted_invoke_code();
assert(is_valid(), "check invoke");
assert(method()->constants()->cache() != NULL, "do not call this from verifier or rewriter");
}
-symbolOop Bytecode_invoke::signature() const {
+symbolOop Bytecode_member_ref::signature() const {
constantPoolOop constants = method()->constants();
return constants->signature_ref_at(index());
}
-symbolOop Bytecode_invoke::name() const {
+symbolOop Bytecode_member_ref::name() const {
constantPoolOop constants = method()->constants();
return constants->name_ref_at(index());
}
-BasicType Bytecode_invoke::result_type(Thread *thread) const {
+BasicType Bytecode_member_ref::result_type(Thread *thread) const {
symbolHandle sh(thread, signature());
ResultTypeFinder rts(sh);
rts.iterate();
@@ -167,9 +166,9 @@
KlassHandle resolved_klass;
constantPoolHandle constants(THREAD, _method->constants());
- if (adjusted_invoke_code() == Bytecodes::_invokedynamic) {
+ if (java_code() == Bytecodes::_invokedynamic) {
LinkResolver::resolve_dynamic_method(m, resolved_klass, constants, index(), CHECK_(methodHandle()));
- } else if (adjusted_invoke_code() != Bytecodes::_invokeinterface) {
+ } else if (java_code() != Bytecodes::_invokeinterface) {
LinkResolver::resolve_method(m, resolved_klass, constants, index(), CHECK_(methodHandle()));
} else {
LinkResolver::resolve_interface_method(m, resolved_klass, constants, index(), CHECK_(methodHandle()));
@@ -178,51 +177,68 @@
}
-int Bytecode_invoke::index() const {
+int Bytecode_member_ref::index() const {
// Note: Rewriter::rewrite changes the Java_u2 of an invokedynamic to a native_u4,
// at the same time it allocates per-call-site CP cache entries.
- Bytecodes::Code stdc = Bytecodes::java_code(code());
- Bytecode* invoke = Bytecode_at(bcp());
- if (invoke->has_index_u4(stdc))
- return invoke->get_index_u4(stdc);
+ Bytecodes::Code rawc = code();
+ Bytecode* invoke = bytecode();
+ if (invoke->has_index_u4(rawc))
+ return invoke->get_index_u4(rawc);
else
- return invoke->get_index_u2_cpcache(stdc);
+ return invoke->get_index_u2_cpcache(rawc);
}
+int Bytecode_member_ref::pool_index() const {
+ int index = this->index();
+ DEBUG_ONLY({
+ if (!bytecode()->has_index_u4(code()))
+ index -= constantPoolOopDesc::CPCACHE_INDEX_TAG;
+ });
+ return _method->constants()->cache()->entry_at(index)->constant_pool_index();
+}
// Implementation of Bytecode_field
void Bytecode_field::verify() const {
- Bytecodes::Code stdc = Bytecodes::java_code(code());
- assert(stdc == Bytecodes::_putstatic || stdc == Bytecodes::_getstatic ||
- stdc == Bytecodes::_putfield || stdc == Bytecodes::_getfield, "check field");
-}
-
-
-bool Bytecode_field::is_static() const {
- Bytecodes::Code stdc = Bytecodes::java_code(code());
- return stdc == Bytecodes::_putstatic || stdc == Bytecodes::_getstatic;
+ assert(is_valid(), "check field");
}
-int Bytecode_field::index() const {
- Bytecode* invoke = Bytecode_at(bcp());
- return invoke->get_index_u2_cpcache(Bytecodes::_getfield);
+// Implementation of Bytecode_loadconstant
+
+int Bytecode_loadconstant::raw_index() const {
+ Bytecode* bcp = bytecode();
+ Bytecodes::Code rawc = bcp->code();
+ assert(rawc != Bytecodes::_wide, "verifier prevents this");
+ if (Bytecodes::java_code(rawc) == Bytecodes::_ldc)
+ return bcp->get_index_u1(rawc);
+ else
+ return bcp->get_index_u2(rawc, false);
}
-
-// Implementation of Bytecodes loac constant
+int Bytecode_loadconstant::pool_index() const {
+ int index = raw_index();
+ if (has_cache_index()) {
+ return _method->constants()->cache()->entry_at(index)->constant_pool_index();
+ }
+ return index;
+}
-int Bytecode_loadconstant::index() const {
- Bytecodes::Code stdc = Bytecodes::java_code(code());
- if (stdc != Bytecodes::_wide) {
- if (Bytecodes::java_code(stdc) == Bytecodes::_ldc)
- return get_index_u1(stdc);
- else
- return get_index_u2(stdc, false);
+BasicType Bytecode_loadconstant::result_type() const {
+ int index = pool_index();
+ constantTag tag = _method->constants()->tag_at(index);
+ return tag.basic_type();
+}
+
+oop Bytecode_loadconstant::resolve_constant(TRAPS) const {
+ assert(_method.not_null(), "must supply method to resolve constant");
+ int index = raw_index();
+ constantPoolOop constants = _method->constants();
+ if (has_cache_index()) {
+ return constants->resolve_cached_constant_at(index, THREAD);
+ } else {
+ return constants->resolve_constant_at(index, THREAD);
}
- stdc = Bytecodes::code_at(addr_at(1));
- return get_index_u2(stdc, true);
}
//------------------------------------------------------------------------------
--- a/hotspot/src/share/vm/interpreter/bytecode.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/bytecode.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -76,9 +76,13 @@
return Bytes::get_native_u2(p);
else return Bytes::get_Java_u2(p);
}
+ int get_index_u1_cpcache(Bytecodes::Code bc) const {
+ assert_same_format_as(bc); assert_index_size(1, bc);
+ return *(jubyte*)addr_at(1) + constantPoolOopDesc::CPCACHE_INDEX_TAG;
+ }
int get_index_u2_cpcache(Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_index_size(2, bc); assert_native_index(bc);
- return Bytes::get_native_u2(addr_at(1)) DEBUG_ONLY(+ constantPoolOopDesc::CPCACHE_INDEX_TAG);
+ return Bytes::get_native_u2(addr_at(1)) + constantPoolOopDesc::CPCACHE_INDEX_TAG;
}
int get_index_u4(Bytecodes::Code bc) const {
assert_same_format_as(bc); assert_index_size(4, bc);
@@ -152,7 +156,7 @@
inline Bytecode_lookupswitch* Bytecode_lookupswitch_at(address bcp) {
Bytecode_lookupswitch* b = (Bytecode_lookupswitch*)bcp;
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
@@ -174,44 +178,56 @@
inline Bytecode_tableswitch* Bytecode_tableswitch_at(address bcp) {
Bytecode_tableswitch* b = (Bytecode_tableswitch*)bcp;
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
-// Abstraction for invoke_{virtual, static, interface, special}
+// Common code for decoding invokes and field references.
-class Bytecode_invoke: public ResourceObj {
+class Bytecode_member_ref: public ResourceObj {
protected:
methodHandle _method; // method containing the bytecode
int _bci; // position of the bytecode
- Bytecode_invoke(methodHandle method, int bci) : _method(method), _bci(bci) {}
+ Bytecode_member_ref(methodHandle method, int bci) : _method(method), _bci(bci) {}
+
+ public:
+ // Attributes
+ methodHandle method() const { return _method; }
+ int bci() const { return _bci; }
+ address bcp() const { return _method->bcp_from(bci()); }
+ Bytecode* bytecode() const { return Bytecode_at(bcp()); }
+
+ int index() const; // cache index (loaded from instruction)
+ int pool_index() const; // constant pool index
+ symbolOop name() const; // returns the name of the method or field
+ symbolOop signature() const; // returns the signature of the method or field
+
+ BasicType result_type(Thread* thread) const; // returns the result type of the getfield or invoke
+
+ Bytecodes::Code code() const { return Bytecodes::code_at(bcp(), _method()); }
+ Bytecodes::Code java_code() const { return Bytecodes::java_code(code()); }
+};
+
+// Abstraction for invoke_{virtual, static, interface, special}
+
+class Bytecode_invoke: public Bytecode_member_ref {
+ protected:
+ Bytecode_invoke(methodHandle method, int bci) : Bytecode_member_ref(method, bci) {}
public:
void verify() const;
// Attributes
- methodHandle method() const { return _method; }
- int bci() const { return _bci; }
- address bcp() const { return _method->bcp_from(bci()); }
-
- int index() const; // the constant pool index for the invoke
- symbolOop name() const; // returns the name of the invoked method
- symbolOop signature() const; // returns the signature of the invoked method
- BasicType result_type(Thread *thread) const; // returns the result type of the invoke
-
- Bytecodes::Code code() const { return Bytecodes::code_at(bcp(), _method()); }
- Bytecodes::Code adjusted_invoke_code() const { return Bytecodes::java_code(code()); }
-
methodHandle static_target(TRAPS); // "specified" method (from constant pool)
// Testers
- bool is_invokeinterface() const { return adjusted_invoke_code() == Bytecodes::_invokeinterface; }
- bool is_invokevirtual() const { return adjusted_invoke_code() == Bytecodes::_invokevirtual; }
- bool is_invokestatic() const { return adjusted_invoke_code() == Bytecodes::_invokestatic; }
- bool is_invokespecial() const { return adjusted_invoke_code() == Bytecodes::_invokespecial; }
- bool is_invokedynamic() const { return adjusted_invoke_code() == Bytecodes::_invokedynamic; }
+ bool is_invokeinterface() const { return java_code() == Bytecodes::_invokeinterface; }
+ bool is_invokevirtual() const { return java_code() == Bytecodes::_invokevirtual; }
+ bool is_invokestatic() const { return java_code() == Bytecodes::_invokestatic; }
+ bool is_invokespecial() const { return java_code() == Bytecodes::_invokespecial; }
+ bool is_invokedynamic() const { return java_code() == Bytecodes::_invokedynamic; }
bool has_receiver() const { return !is_invokestatic() && !is_invokedynamic(); }
@@ -230,7 +246,7 @@
inline Bytecode_invoke* Bytecode_invoke_at(methodHandle method, int bci) {
Bytecode_invoke* b = new Bytecode_invoke(method, bci);
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
@@ -240,21 +256,34 @@
}
-// Abstraction for all field accesses (put/get field/static_
-class Bytecode_field: public Bytecode {
-public:
+// Abstraction for all field accesses (put/get field/static)
+class Bytecode_field: public Bytecode_member_ref {
+ protected:
+ Bytecode_field(methodHandle method, int bci) : Bytecode_member_ref(method, bci) {}
+
+ public:
+ // Testers
+ bool is_getfield() const { return java_code() == Bytecodes::_getfield; }
+ bool is_putfield() const { return java_code() == Bytecodes::_putfield; }
+ bool is_getstatic() const { return java_code() == Bytecodes::_getstatic; }
+ bool is_putstatic() const { return java_code() == Bytecodes::_putstatic; }
+
+ bool is_getter() const { return is_getfield() || is_getstatic(); }
+ bool is_static() const { return is_getstatic() || is_putstatic(); }
+
+ bool is_valid() const { return is_getfield() ||
+ is_putfield() ||
+ is_getstatic() ||
+ is_putstatic(); }
void verify() const;
- int index() const;
- bool is_static() const;
-
// Creation
- inline friend Bytecode_field* Bytecode_field_at(const methodOop method, address bcp);
+ inline friend Bytecode_field* Bytecode_field_at(methodHandle method, int bci);
};
-inline Bytecode_field* Bytecode_field_at(const methodOop method, address bcp) {
- Bytecode_field* b = (Bytecode_field*)bcp;
- debug_only(b->verify());
+inline Bytecode_field* Bytecode_field_at(methodHandle method, int bci) {
+ Bytecode_field* b = new Bytecode_field(method, bci);
+ DEBUG_ONLY(b->verify());
return b;
}
@@ -274,7 +303,7 @@
inline Bytecode_checkcast* Bytecode_checkcast_at(address bcp) {
Bytecode_checkcast* b = (Bytecode_checkcast*)bcp;
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
@@ -294,7 +323,7 @@
inline Bytecode_instanceof* Bytecode_instanceof_at(address bcp) {
Bytecode_instanceof* b = (Bytecode_instanceof*)bcp;
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
@@ -312,7 +341,7 @@
inline Bytecode_new* Bytecode_new_at(address bcp) {
Bytecode_new* b = (Bytecode_new*)bcp;
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
@@ -330,7 +359,7 @@
inline Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp) {
Bytecode_multianewarray* b = (Bytecode_multianewarray*)bcp;
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
@@ -348,29 +377,57 @@
inline Bytecode_anewarray* Bytecode_anewarray_at(address bcp) {
Bytecode_anewarray* b = (Bytecode_anewarray*)bcp;
- debug_only(b->verify());
+ DEBUG_ONLY(b->verify());
return b;
}
// Abstraction for ldc, ldc_w and ldc2_w
-class Bytecode_loadconstant: public Bytecode {
+class Bytecode_loadconstant: public ResourceObj {
+ private:
+ int _bci;
+ methodHandle _method;
+
+ Bytecodes::Code code() const { return bytecode()->code(); }
+
+ int raw_index() const;
+
+ Bytecode_loadconstant(methodHandle method, int bci) : _method(method), _bci(bci) {}
+
public:
+ // Attributes
+ methodHandle method() const { return _method; }
+ int bci() const { return _bci; }
+ address bcp() const { return _method->bcp_from(bci()); }
+ Bytecode* bytecode() const { return Bytecode_at(bcp()); }
+
void verify() const {
+ assert(_method.not_null(), "must supply method");
Bytecodes::Code stdc = Bytecodes::java_code(code());
assert(stdc == Bytecodes::_ldc ||
stdc == Bytecodes::_ldc_w ||
stdc == Bytecodes::_ldc2_w, "load constant");
}
- int index() const;
+ // Only non-standard bytecodes (fast_aldc) have CP cache indexes.
+ bool has_cache_index() const { return code() >= Bytecodes::number_of_java_codes; }
- inline friend Bytecode_loadconstant* Bytecode_loadconstant_at(const methodOop method, address bcp);
+ int pool_index() const; // index into constant pool
+ int cache_index() const { // index into CP cache (or -1 if none)
+ return has_cache_index() ? raw_index() : -1;
+ }
+
+ BasicType result_type() const; // returns the result type of the ldc
+
+ oop resolve_constant(TRAPS) const;
+
+ // Creation
+ inline friend Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci);
};
-inline Bytecode_loadconstant* Bytecode_loadconstant_at(const methodOop method, address bcp) {
- Bytecode_loadconstant* b = (Bytecode_loadconstant*)bcp;
- debug_only(b->verify());
+inline Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci) {
+ Bytecode_loadconstant* b = new Bytecode_loadconstant(method, bci);
+ DEBUG_ONLY(b->verify());
return b;
}
--- a/hotspot/src/share/vm/interpreter/bytecodeTracer.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/bytecodeTracer.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -49,6 +49,7 @@
int get_index_u1() { return *(address)_next_pc++; }
int get_index_u2() { int i=Bytes::get_Java_u2(_next_pc); _next_pc+=2; return i; }
+ int get_index_u1_cpcache() { return get_index_u1() + constantPoolOopDesc::CPCACHE_INDEX_TAG; }
int get_index_u2_cpcache() { int i=Bytes::get_native_u2(_next_pc); _next_pc+=2; return i + constantPoolOopDesc::CPCACHE_INDEX_TAG; }
int get_index_u4() { int i=Bytes::get_native_u4(_next_pc); _next_pc+=4; return i; }
int get_index_special() { return (is_wide()) ? get_index_u2() : get_index_u1(); }
@@ -60,6 +61,7 @@
bool check_index(int i, int& cp_index, outputStream* st = tty);
void print_constant(int i, outputStream* st = tty);
void print_field_or_method(int i, outputStream* st = tty);
+ void print_field_or_method(int orig_i, int i, outputStream* st = tty);
void print_attributes(int bci, outputStream* st = tty);
void bytecode_epilog(int bci, outputStream* st = tty);
@@ -177,18 +179,29 @@
_closure->trace(method, bcp, st);
}
+void print_symbol(symbolOop sym, outputStream* st) {
+ char buf[40];
+ int len = sym->utf8_length();
+ if (len >= (int)sizeof(buf)) {
+ st->print_cr(" %s...[%d]", sym->as_C_string(buf, sizeof(buf)), len);
+ } else {
+ st->print(" ");
+ sym->print_on(st); st->cr();
+ }
+}
+
void print_oop(oop value, outputStream* st) {
if (value == NULL) {
st->print_cr(" NULL");
- } else {
+ } else if (java_lang_String::is_instance(value)) {
EXCEPTION_MARK;
Handle h_value (THREAD, value);
symbolHandle sym = java_lang_String::as_symbol(h_value, CATCH);
- if (sym->utf8_length() > 32) {
- st->print_cr(" ....");
- } else {
- sym->print_on(st); st->cr();
- }
+ print_symbol(sym(), st);
+ } else if (value->is_symbol()) {
+ print_symbol(symbolOop(value), st);
+ } else {
+ st->print_cr(" " PTR_FORMAT, (intptr_t) value);
}
}
@@ -279,16 +292,27 @@
} else if (tag.is_double()) {
st->print_cr(" %f", constants->double_at(i));
} else if (tag.is_string()) {
- oop string = constants->resolved_string_at(i);
+ oop string = constants->pseudo_string_at(i);
print_oop(string, st);
} else if (tag.is_unresolved_string()) {
- st->print_cr(" <unresolved string at %d>", i);
+ const char* string = constants->string_at_noresolve(i);
+ st->print_cr(" %s", string);
} else if (tag.is_klass()) {
st->print_cr(" %s", constants->resolved_klass_at(i)->klass_part()->external_name());
} else if (tag.is_unresolved_klass()) {
st->print_cr(" <unresolved klass at %d>", i);
} else if (tag.is_object()) {
- st->print_cr(" " PTR_FORMAT, constants->object_at(i));
+ st->print(" <Object>");
+ print_oop(constants->object_at(i), st);
+ } else if (tag.is_method_type()) {
+ int i2 = constants->method_type_index_at(i);
+ st->print(" <MethodType> %d", i2);
+ print_oop(constants->symbol_at(i2), st);
+ } else if (tag.is_method_handle()) {
+ int kind = constants->method_handle_ref_kind_at(i);
+ int i2 = constants->method_handle_index_at(i);
+ st->print(" <MethodHandle of kind %d>", kind, i2);
+ print_field_or_method(-i, i2, st);
} else {
st->print_cr(" bad tag=%d at %d", tag.value(), i);
}
@@ -297,7 +321,10 @@
void BytecodePrinter::print_field_or_method(int i, outputStream* st) {
int orig_i = i;
if (!check_index(orig_i, i, st)) return;
+ print_field_or_method(orig_i, i, st);
+}
+void BytecodePrinter::print_field_or_method(int orig_i, int i, outputStream* st) {
constantPoolOop constants = method()->constants();
constantTag tag = constants->tag_at(i);
@@ -314,9 +341,11 @@
return;
}
+ symbolOop klass = constants->klass_name_at(constants->uncached_klass_ref_index_at(i));
symbolOop name = constants->uncached_name_ref_at(i);
symbolOop signature = constants->uncached_signature_ref_at(i);
- st->print_cr(" %d <%s> <%s> ", i, name->as_C_string(), signature->as_C_string());
+ const char* sep = (tag.is_field() ? "/" : "");
+ st->print_cr(" %d <%s.%s%s%s> ", i, klass->as_C_string(), name->as_C_string(), sep, signature->as_C_string());
}
@@ -340,12 +369,20 @@
st->print_cr(" " INT32_FORMAT, get_short());
break;
case Bytecodes::_ldc:
- print_constant(get_index_u1(), st);
+ if (Bytecodes::uses_cp_cache(raw_code())) {
+ print_constant(get_index_u1_cpcache(), st);
+ } else {
+ print_constant(get_index_u1(), st);
+ }
break;
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:
- print_constant(get_index_u2(), st);
+ if (Bytecodes::uses_cp_cache(raw_code())) {
+ print_constant(get_index_u2_cpcache(), st);
+ } else {
+ print_constant(get_index_u2(), st);
+ }
break;
case Bytecodes::_iload:
--- a/hotspot/src/share/vm/interpreter/bytecodes.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/bytecodes.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -489,6 +489,9 @@
def(_return_register_finalizer , "return_register_finalizer" , "b" , NULL , T_VOID , 0, true, _return);
+ def(_fast_aldc , "fast_aldc" , "bj" , NULL , T_OBJECT, 1, true, _ldc );
+ def(_fast_aldc_w , "fast_aldc_w" , "bJJ" , NULL , T_OBJECT, 1, true, _ldc_w );
+
def(_shouldnotreachhere , "_shouldnotreachhere" , "b" , NULL , T_VOID , 0, false);
// platform specific JVM bytecodes
--- a/hotspot/src/share/vm/interpreter/bytecodes.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/bytecodes.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -270,6 +270,10 @@
_fast_linearswitch ,
_fast_binaryswitch ,
+ // special handling of oop constants:
+ _fast_aldc ,
+ _fast_aldc_w ,
+
_return_register_finalizer ,
_shouldnotreachhere, // For debugging
--- a/hotspot/src/share/vm/interpreter/interpreter.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/interpreter.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -267,20 +267,6 @@
}
#endif // PRODUCT
-static BasicType constant_pool_type(methodOop method, int index) {
- constantTag tag = method->constants()->tag_at(index);
- if (tag.is_int ()) return T_INT;
- else if (tag.is_float ()) return T_FLOAT;
- else if (tag.is_long ()) return T_LONG;
- else if (tag.is_double ()) return T_DOUBLE;
- else if (tag.is_string ()) return T_OBJECT;
- else if (tag.is_unresolved_string()) return T_OBJECT;
- else if (tag.is_klass ()) return T_OBJECT;
- else if (tag.is_unresolved_klass ()) return T_OBJECT;
- ShouldNotReachHere();
- return T_ILLEGAL;
-}
-
//------------------------------------------------------------------------------------------------------------------------
// Deoptimization support
@@ -330,13 +316,15 @@
}
case Bytecodes::_ldc :
- type = constant_pool_type( method, *(bcp+1) );
- break;
-
case Bytecodes::_ldc_w : // fall through
case Bytecodes::_ldc2_w:
- type = constant_pool_type( method, Bytes::get_Java_u2(bcp+1) );
- break;
+ {
+ Thread *thread = Thread::current();
+ ResourceMark rm(thread);
+ methodHandle mh(thread, method);
+ type = Bytecode_loadconstant_at(mh, bci)->result_type();
+ break;
+ }
default:
type = Bytecodes::result_type(code);
--- a/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/interpreterRuntime.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -83,6 +83,18 @@
}
IRT_END
+IRT_ENTRY(void, InterpreterRuntime::resolve_ldc(JavaThread* thread, Bytecodes::Code bytecode)) {
+ assert(bytecode == Bytecodes::_fast_aldc ||
+ bytecode == Bytecodes::_fast_aldc_w, "wrong bc");
+ ResourceMark rm(thread);
+ methodHandle m (thread, method(thread));
+ Bytecode_loadconstant* ldc = Bytecode_loadconstant_at(m, bci(thread));
+ oop result = ldc->resolve_constant(THREAD);
+ DEBUG_ONLY(ConstantPoolCacheEntry* cpce = m->constants()->cache()->entry_at(ldc->cache_index()));
+ assert(result == cpce->f1(), "expected result for assembly code");
+}
+IRT_END
+
//------------------------------------------------------------------------------------------------------------------------
// Allocation
@@ -328,7 +340,7 @@
typeArrayHandle h_extable (thread, h_method->exception_table());
bool should_repeat;
int handler_bci;
- int current_bci = bcp(thread) - h_method->code_base();
+ int current_bci = bci(thread);
// Need to do this check first since when _do_not_unlock_if_synchronized
// is set, we don't want to trigger any classloading which may make calls
@@ -615,8 +627,7 @@
if (bytecode == Bytecodes::_invokevirtual || bytecode == Bytecodes::_invokeinterface) {
ResourceMark rm(thread);
methodHandle m (thread, method(thread));
- int bci = m->bci_from(bcp(thread));
- Bytecode_invoke* call = Bytecode_invoke_at(m, bci);
+ Bytecode_invoke* call = Bytecode_invoke_at(m, bci(thread));
symbolHandle signature (thread, call->signature());
receiver = Handle(thread,
thread->last_frame().interpreter_callee_receiver(signature));
--- a/hotspot/src/share/vm/interpreter/interpreterRuntime.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/interpreterRuntime.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -34,6 +34,7 @@
static frame last_frame(JavaThread *thread) { return thread->last_frame(); }
static methodOop method(JavaThread *thread) { return last_frame(thread).interpreter_frame_method(); }
static address bcp(JavaThread *thread) { return last_frame(thread).interpreter_frame_bcp(); }
+ static int bci(JavaThread *thread) { return last_frame(thread).interpreter_frame_bci(); }
static void set_bcp_and_mdp(address bcp, JavaThread*thread);
static Bytecodes::Code code(JavaThread *thread) {
// pass method to avoid calling unsafe bcp_to_method (partial fix 4926272)
@@ -59,6 +60,7 @@
public:
// Constants
static void ldc (JavaThread* thread, bool wide);
+ static void resolve_ldc (JavaThread* thread, Bytecodes::Code bytecode);
// Allocation
static void _new (JavaThread* thread, constantPoolOopDesc* pool, int index);
--- a/hotspot/src/share/vm/interpreter/rewriter.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/rewriter.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -38,6 +38,8 @@
case JVM_CONSTANT_InterfaceMethodref:
case JVM_CONSTANT_Fieldref : // fall through
case JVM_CONSTANT_Methodref : // fall through
+ case JVM_CONSTANT_MethodHandle : // fall through
+ case JVM_CONSTANT_MethodType : // fall through
add_cp_cache_entry(i);
break;
}
@@ -131,6 +133,27 @@
}
+// Rewrite some ldc bytecodes to _fast_aldc
+void Rewriter::maybe_rewrite_ldc(address bcp, int offset, bool is_wide) {
+ assert((*bcp) == (is_wide ? Bytecodes::_ldc_w : Bytecodes::_ldc), "");
+ address p = bcp + offset;
+ int cp_index = is_wide ? Bytes::get_Java_u2(p) : (u1)(*p);
+ constantTag tag = _pool->tag_at(cp_index).value();
+ if (tag.is_method_handle() || tag.is_method_type()) {
+ int cache_index = cp_entry_to_cp_cache(cp_index);
+ if (is_wide) {
+ (*bcp) = Bytecodes::_fast_aldc_w;
+ assert(cache_index == (u2)cache_index, "");
+ Bytes::put_native_u2(p, cache_index);
+ } else {
+ (*bcp) = Bytecodes::_fast_aldc;
+ assert(cache_index == (u1)cache_index, "");
+ (*p) = (u1)cache_index;
+ }
+ }
+}
+
+
// Rewrites a method given the index_map information
void Rewriter::scan_method(methodOop method) {
@@ -198,6 +221,12 @@
case Bytecodes::_invokedynamic:
rewrite_invokedynamic(bcp, prefix_length+1);
break;
+ case Bytecodes::_ldc:
+ maybe_rewrite_ldc(bcp, prefix_length+1, false);
+ break;
+ case Bytecodes::_ldc_w:
+ maybe_rewrite_ldc(bcp, prefix_length+1, true);
+ break;
case Bytecodes::_jsr : // fall through
case Bytecodes::_jsr_w : nof_jsrs++; break;
case Bytecodes::_monitorenter : // fall through
--- a/hotspot/src/share/vm/interpreter/rewriter.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/rewriter.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -66,6 +66,7 @@
void rewrite_Object_init(methodHandle m, TRAPS);
void rewrite_member_reference(address bcp, int offset);
void rewrite_invokedynamic(address bcp, int offset);
+ void maybe_rewrite_ldc(address bcp, int offset, bool is_wide);
public:
// Driver routine:
--- a/hotspot/src/share/vm/interpreter/templateTable.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/templateTable.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -507,6 +507,9 @@
def(Bytecodes::_fast_linearswitch , ubcp|disp|____|____, itos, vtos, fast_linearswitch , _ );
def(Bytecodes::_fast_binaryswitch , ubcp|disp|____|____, itos, vtos, fast_binaryswitch , _ );
+ def(Bytecodes::_fast_aldc , ubcp|____|clvm|____, vtos, atos, fast_aldc , false );
+ def(Bytecodes::_fast_aldc_w , ubcp|____|clvm|____, vtos, atos, fast_aldc , true );
+
def(Bytecodes::_return_register_finalizer , ____|disp|clvm|____, vtos, vtos, _return , vtos );
def(Bytecodes::_shouldnotreachhere , ____|____|____|____, vtos, vtos, shouldnotreachhere , _ );
--- a/hotspot/src/share/vm/interpreter/templateTable.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/interpreter/templateTable.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -123,6 +123,7 @@
static void sipush();
static void ldc(bool wide);
static void ldc2_w();
+ static void fast_aldc(bool wide);
static void locals_index(Register reg, int offset = 1);
static void iload();
--- a/hotspot/src/share/vm/oops/constantPoolKlass.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/oops/constantPoolKlass.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -372,6 +372,13 @@
entry->print_value_on(st);
}
break;
+ case JVM_CONSTANT_MethodHandle :
+ st->print("ref_kind=%d", cp->method_handle_ref_kind_at(index));
+ st->print(" ref_index=%d", cp->method_handle_index_at(index));
+ break;
+ case JVM_CONSTANT_MethodType :
+ st->print("signature_index=%d", cp->method_type_index_at(index));
+ break;
default:
ShouldNotReachHere();
break;
@@ -437,6 +444,7 @@
// can be non-perm, can be non-instance (array)
}
}
+ // FIXME: verify JSR 292 tags JVM_CONSTANT_MethodHandle, etc.
base++;
}
guarantee(cp->tags()->is_perm(), "should be in permspace");
--- a/hotspot/src/share/vm/oops/constantPoolOop.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/oops/constantPoolOop.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -358,6 +358,11 @@
return klass_at_noresolve(ref_index);
}
+symbolOop constantPoolOopDesc::uncached_klass_ref_at_noresolve(int which) {
+ jint ref_index = uncached_klass_ref_index_at(which);
+ return klass_at_noresolve(ref_index);
+}
+
char* constantPoolOopDesc::string_at_noresolve(int which) {
// Test entry type in case string is resolved while in here.
oop entry = *(obj_at_addr(which));
@@ -384,6 +389,119 @@
}
}
+oop constantPoolOopDesc::resolve_constant_at_impl(constantPoolHandle this_oop, int index, int cache_index, TRAPS) {
+ oop result_oop = NULL;
+ if (cache_index >= 0) {
+ assert(index < 0, "only one kind of index at a time");
+ ConstantPoolCacheEntry* cpc_entry = this_oop->cache()->entry_at(cache_index);
+ result_oop = cpc_entry->f1();
+ if (result_oop != NULL) {
+ return result_oop; // that was easy...
+ }
+ index = cpc_entry->constant_pool_index();
+ }
+
+ int tag_value = this_oop->tag_at(index).value();
+ switch (tag_value) {
+
+ case JVM_CONSTANT_UnresolvedClass:
+ case JVM_CONSTANT_UnresolvedClassInError:
+ case JVM_CONSTANT_Class:
+ {
+ klassOop resolved = klass_at_impl(this_oop, index, CHECK_NULL);
+ // ldc wants the java mirror.
+ result_oop = resolved->klass_part()->java_mirror();
+ break;
+ }
+
+ case JVM_CONSTANT_String:
+ case JVM_CONSTANT_UnresolvedString:
+ if (this_oop->is_pseudo_string_at(index)) {
+ result_oop = this_oop->pseudo_string_at(index);
+ break;
+ }
+ result_oop = string_at_impl(this_oop, index, CHECK_NULL);
+ break;
+
+ case JVM_CONSTANT_Object:
+ result_oop = this_oop->object_at(index);
+ break;
+
+ case JVM_CONSTANT_MethodHandle:
+ {
+ int ref_kind = this_oop->method_handle_ref_kind_at(index);
+ int callee_index = this_oop->method_handle_klass_index_at(index);
+ symbolHandle name(THREAD, this_oop->method_handle_name_ref_at(index));
+ symbolHandle signature(THREAD, this_oop->method_handle_signature_ref_at(index));
+ if (PrintMiscellaneous)
+ tty->print_cr("resolve JVM_CONSTANT_MethodHandle:%d [%d/%d/%d] %s.%s",
+ ref_kind, index, this_oop->method_handle_index_at(index),
+ callee_index, name->as_C_string(), signature->as_C_string());
+ KlassHandle callee;
+ { klassOop k = klass_at_impl(this_oop, callee_index, CHECK_NULL);
+ callee = KlassHandle(THREAD, k);
+ }
+ KlassHandle klass(THREAD, this_oop->pool_holder());
+ Handle value = SystemDictionary::link_method_handle_constant(klass, ref_kind,
+ callee, name, signature,
+ CHECK_NULL);
+ result_oop = value();
+ // FIXME: Uniquify errors, using SystemDictionary::find_resolution_error.
+ break;
+ }
+
+ case JVM_CONSTANT_MethodType:
+ {
+ symbolHandle signature(THREAD, this_oop->method_type_signature_at(index));
+ if (PrintMiscellaneous)
+ tty->print_cr("resolve JVM_CONSTANT_MethodType [%d/%d] %s",
+ index, this_oop->method_type_index_at(index),
+ signature->as_C_string());
+ KlassHandle klass(THREAD, this_oop->pool_holder());
+ bool ignore_is_on_bcp = false;
+ Handle value = SystemDictionary::find_method_handle_type(signature,
+ klass,
+ ignore_is_on_bcp,
+ CHECK_NULL);
+ result_oop = value();
+ // FIXME: Uniquify errors, using SystemDictionary::find_resolution_error.
+ break;
+ }
+
+ /* maybe some day
+ case JVM_CONSTANT_Integer:
+ case JVM_CONSTANT_Float:
+ case JVM_CONSTANT_Long:
+ case JVM_CONSTANT_Double:
+ result_oop = java_lang_boxing_object::create(...);
+ break;
+ */
+
+ default:
+ DEBUG_ONLY( tty->print_cr("*** %p: tag at CP[%d/%d] = %d",
+ this_oop(), index, cache_index, tag_value) );
+ assert(false, "unexpected constant tag");
+ break;
+ }
+
+ if (cache_index >= 0) {
+ // Cache the oop here also.
+ Handle result(THREAD, result_oop);
+ result_oop = NULL; // safety
+ ObjectLocker ol(this_oop, THREAD);
+ ConstantPoolCacheEntry* cpc_entry = this_oop->cache()->entry_at(cache_index);
+ oop result_oop2 = cpc_entry->f1();
+ if (result_oop2 != NULL) {
+ // Race condition: May already be filled in while we were trying to lock.
+ return result_oop2;
+ }
+ cpc_entry->set_f1(result());
+ return result();
+ } else {
+ return result_oop;
+ }
+}
+
oop constantPoolOopDesc::string_at_impl(constantPoolHandle this_oop, int which, TRAPS) {
oop entry = *(this_oop->obj_at_addr(which));
if (entry->is_symbol()) {
@@ -690,6 +808,28 @@
}
} break;
+ case JVM_CONSTANT_MethodType:
+ {
+ int k1 = method_type_index_at(index1);
+ int k2 = cp2->method_type_index_at(index2);
+ if (k1 == k2) {
+ return true;
+ }
+ } break;
+
+ case JVM_CONSTANT_MethodHandle:
+ {
+ int k1 = method_handle_ref_kind_at(index1);
+ int k2 = cp2->method_handle_ref_kind_at(index2);
+ if (k1 == k2) {
+ int i1 = method_handle_index_at(index1);
+ int i2 = cp2->method_handle_index_at(index2);
+ if (i1 == i2) {
+ return true;
+ }
+ }
+ } break;
+
case JVM_CONSTANT_UnresolvedString:
{
symbolOop s1 = unresolved_string_at(index1);
@@ -863,6 +1003,19 @@
to_cp->symbol_at_put(to_i, s);
} break;
+ case JVM_CONSTANT_MethodType:
+ {
+ jint k = method_type_index_at(from_i);
+ to_cp->method_type_index_at_put(to_i, k);
+ } break;
+
+ case JVM_CONSTANT_MethodHandle:
+ {
+ int k1 = method_handle_ref_kind_at(from_i);
+ int k2 = method_handle_index_at(from_i);
+ to_cp->method_handle_index_at_put(to_i, k1, k2);
+ } break;
+
// Invalid is used as the tag for the second constant pool entry
// occupied by JVM_CONSTANT_Double or JVM_CONSTANT_Long. It should
// not be seen by itself.
@@ -1066,8 +1219,12 @@
case JVM_CONSTANT_UnresolvedClassInError:
case JVM_CONSTANT_StringIndex:
case JVM_CONSTANT_UnresolvedString:
+ case JVM_CONSTANT_MethodType:
return 3;
+ case JVM_CONSTANT_MethodHandle:
+ return 4; //tag, ref_kind, ref_index
+
case JVM_CONSTANT_Integer:
case JVM_CONSTANT_Float:
case JVM_CONSTANT_Fieldref:
@@ -1271,6 +1428,22 @@
DBG(printf("JVM_CONSTANT_StringIndex: %hd", idx1));
break;
}
+ case JVM_CONSTANT_MethodHandle: {
+ *bytes = JVM_CONSTANT_MethodHandle;
+ int kind = method_handle_ref_kind_at(idx);
+ idx1 = method_handle_index_at(idx);
+ *(bytes+1) = (unsigned char) kind;
+ Bytes::put_Java_u2((address) (bytes+2), idx1);
+ DBG(printf("JVM_CONSTANT_MethodHandle: %d %hd", kind, idx1));
+ break;
+ }
+ case JVM_CONSTANT_MethodType: {
+ *bytes = JVM_CONSTANT_MethodType;
+ idx1 = method_type_index_at(idx);
+ Bytes::put_Java_u2((address) (bytes+1), idx1);
+ DBG(printf("JVM_CONSTANT_MethodType: %hd", idx1));
+ break;
+ }
}
DBG(printf("\n"));
bytes += ent_size;
--- a/hotspot/src/share/vm/oops/constantPoolOop.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/oops/constantPoolOop.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -146,6 +146,16 @@
oop_store_without_check(obj_at_addr(which), oop(s));
}
+ void method_handle_index_at_put(int which, int ref_kind, int ref_index) {
+ tag_at_put(which, JVM_CONSTANT_MethodHandle);
+ *int_at_addr(which) = ((jint) ref_index<<16) | ref_kind;
+ }
+
+ void method_type_index_at_put(int which, int ref_index) {
+ tag_at_put(which, JVM_CONSTANT_MethodType);
+ *int_at_addr(which) = ref_index;
+ }
+
// Temporary until actual use
void unresolved_string_at_put(int which, symbolOop s) {
*obj_at_addr(which) = NULL;
@@ -357,6 +367,36 @@
return *int_at_addr(which);
}
+ int method_handle_ref_kind_at(int which) {
+ assert(tag_at(which).is_method_handle(), "Corrupted constant pool");
+ return extract_low_short_from_int(*int_at_addr(which)); // mask out unwanted ref_index bits
+ }
+ int method_handle_index_at(int which) {
+ assert(tag_at(which).is_method_handle(), "Corrupted constant pool");
+ return extract_high_short_from_int(*int_at_addr(which)); // shift out unwanted ref_kind bits
+ }
+ int method_type_index_at(int which) {
+ assert(tag_at(which).is_method_type(), "Corrupted constant pool");
+ return *int_at_addr(which);
+ }
+ // Derived queries:
+ symbolOop method_handle_name_ref_at(int which) {
+ int member = method_handle_index_at(which);
+ return impl_name_ref_at(member, true);
+ }
+ symbolOop method_handle_signature_ref_at(int which) {
+ int member = method_handle_index_at(which);
+ return impl_signature_ref_at(member, true);
+ }
+ int method_handle_klass_index_at(int which) {
+ int member = method_handle_index_at(which);
+ return impl_klass_ref_index_at(member, true);
+ }
+ symbolOop method_type_signature_at(int which) {
+ int sym = method_type_index_at(which);
+ return symbol_at(sym);
+ }
+
// The following methods (name/signature/klass_ref_at, klass_ref_at_noresolve,
// name_and_type_ref_index_at) all expect to be passed indices obtained
// directly from the bytecode, and extracted according to java byte order.
@@ -388,6 +428,17 @@
resolve_string_constants_impl(h_this, CHECK);
}
+ // Resolve late bound constants.
+ oop resolve_constant_at(int index, TRAPS) {
+ constantPoolHandle h_this(THREAD, this);
+ return resolve_constant_at_impl(h_this, index, -1, THREAD);
+ }
+
+ oop resolve_cached_constant_at(int cache_index, TRAPS) {
+ constantPoolHandle h_this(THREAD, this);
+ return resolve_constant_at_impl(h_this, -1, cache_index, THREAD);
+ }
+
// Klass name matches name at offset
bool klass_name_at_matches(instanceKlassHandle k, int which);
@@ -420,6 +471,7 @@
// Routines currently used for annotations (only called by jvm.cpp) but which might be used in the
// future by other Java code. These take constant pool indices rather than possibly-byte-swapped
// constant pool cache indices as do the peer methods above.
+ symbolOop uncached_klass_ref_at_noresolve(int which);
symbolOop uncached_name_ref_at(int which) { return impl_name_ref_at(which, true); }
symbolOop uncached_signature_ref_at(int which) { return impl_signature_ref_at(which, true); }
int uncached_klass_ref_index_at(int which) { return impl_klass_ref_index_at(which, true); }
@@ -436,6 +488,8 @@
#ifdef ASSERT
enum { CPCACHE_INDEX_TAG = 0x10000 }; // helps keep CP cache indices distinct from CP indices
+#else
+ enum { CPCACHE_INDEX_TAG = 0 }; // in product mode, this zero value is a no-op
#endif //ASSERT
private:
@@ -469,6 +523,8 @@
// Resolve string constants (to prevent allocation during compilation)
static void resolve_string_constants_impl(constantPoolHandle this_oop, TRAPS);
+ static oop resolve_constant_at_impl(constantPoolHandle this_oop, int index, int cache_index, TRAPS);
+
public:
// Merging constantPoolOop support:
bool compare_entry_to(int index1, constantPoolHandle cp2, int index2, TRAPS);
--- a/hotspot/src/share/vm/oops/cpCacheOop.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/oops/cpCacheOop.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -110,6 +110,7 @@
class ConstantPoolCacheEntry VALUE_OBJ_CLASS_SPEC {
friend class VMStructs;
friend class constantPoolCacheKlass;
+ friend class constantPoolOopDesc; //resolve_constant_at_impl => set_f1
private:
volatile intx _indices; // constant pool index & rewrite bytecodes
--- a/hotspot/src/share/vm/opto/parse2.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/opto/parse2.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -1324,33 +1324,21 @@
case Bytecodes::_ldc_w:
case Bytecodes::_ldc2_w:
// If the constant is unresolved, run this BC once in the interpreter.
- if (iter().is_unresolved_string()) {
- uncommon_trap(Deoptimization::make_trap_request
- (Deoptimization::Reason_unloaded,
- Deoptimization::Action_reinterpret,
- iter().get_constant_index()),
- NULL, "unresolved_string");
- break;
- } else {
+ {
ciConstant constant = iter().get_constant();
- if (constant.basic_type() == T_OBJECT) {
- ciObject* c = constant.as_object();
- if (c->is_klass()) {
- // The constant returned for a klass is the ciKlass for the
- // entry. We want the java_mirror so get it.
- ciKlass* klass = c->as_klass();
- if (klass->is_loaded()) {
- constant = ciConstant(T_OBJECT, klass->java_mirror());
- } else {
- uncommon_trap(Deoptimization::make_trap_request
- (Deoptimization::Reason_unloaded,
- Deoptimization::Action_reinterpret,
- iter().get_constant_index()),
- NULL, "unresolved_klass");
- break;
- }
- }
+ if (constant.basic_type() == T_OBJECT &&
+ !constant.as_object()->is_loaded()) {
+ int index = iter().get_constant_pool_index();
+ constantTag tag = iter().get_constant_pool_tag(index);
+ uncommon_trap(Deoptimization::make_trap_request
+ (Deoptimization::Reason_unloaded,
+ Deoptimization::Action_reinterpret,
+ index),
+ NULL, tag.internal_name());
+ break;
}
+ assert(constant.basic_type() != T_OBJECT || !constant.as_object()->is_klass(),
+ "must be java_mirror of klass");
bool pushed = push_constant(constant, true);
guarantee(pushed, "must be possible to push this constant");
}
--- a/hotspot/src/share/vm/prims/jvm.h Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/prims/jvm.h Wed Jun 09 18:50:45 2010 -0700
@@ -1044,7 +1044,22 @@
JVM_CONSTANT_Fieldref,
JVM_CONSTANT_Methodref,
JVM_CONSTANT_InterfaceMethodref,
- JVM_CONSTANT_NameAndType
+ JVM_CONSTANT_NameAndType,
+ JVM_CONSTANT_MethodHandle = 15, // JSR 292
+ JVM_CONSTANT_MethodType = 16 // JSR 292
+};
+
+/* JVM_CONSTANT_MethodHandle subtypes */
+enum {
+ JVM_REF_getField = 1,
+ JVM_REF_getStatic = 2,
+ JVM_REF_putField = 3,
+ JVM_REF_putStatic = 4,
+ JVM_REF_invokeVirtual = 5,
+ JVM_REF_invokeStatic = 6,
+ JVM_REF_invokeSpecial = 7,
+ JVM_REF_newInvokeSpecial = 8,
+ JVM_REF_invokeInterface = 9
};
/* Used in the newarray instruction. */
--- a/hotspot/src/share/vm/prims/methodComparator.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/prims/methodComparator.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -163,10 +163,10 @@
case Bytecodes::_ldc : // fall through
case Bytecodes::_ldc_w : {
- Bytecode_loadconstant* ldc_old = Bytecode_loadconstant_at(_s_old->method()(), _s_old->bcp());
- Bytecode_loadconstant* ldc_new = Bytecode_loadconstant_at(_s_new->method()(), _s_new->bcp());
- int cpi_old = ldc_old->index();
- int cpi_new = ldc_new->index();
+ Bytecode_loadconstant* ldc_old = Bytecode_loadconstant_at(_s_old->method(), _s_old->bci());
+ Bytecode_loadconstant* ldc_new = Bytecode_loadconstant_at(_s_new->method(), _s_new->bci());
+ int cpi_old = ldc_old->pool_index();
+ int cpi_new = ldc_new->pool_index();
constantTag tag_old = _old_cp->tag_at(cpi_old);
constantTag tag_new = _new_cp->tag_at(cpi_new);
if (tag_old.is_int() || tag_old.is_float()) {
@@ -187,12 +187,30 @@
if (strcmp(_old_cp->string_at_noresolve(cpi_old),
_new_cp->string_at_noresolve(cpi_new)) != 0)
return false;
- } else { // tag_old should be klass - 4881222
+ } else if (tag_old.is_klass() || tag_old.is_unresolved_klass()) {
+ // tag_old should be klass - 4881222
if (! (tag_new.is_unresolved_klass() || tag_new.is_klass()))
return false;
if (_old_cp->klass_at_noresolve(cpi_old) !=
_new_cp->klass_at_noresolve(cpi_new))
return false;
+ } else if (tag_old.is_method_type() && tag_new.is_method_type()) {
+ int mti_old = _old_cp->method_type_index_at(cpi_old);
+ int mti_new = _new_cp->method_type_index_at(cpi_new);
+ if ((_old_cp->symbol_at(mti_old) != _new_cp->symbol_at(mti_new)))
+ return false;
+ } else if (tag_old.is_method_handle() && tag_new.is_method_handle()) {
+ if (_old_cp->method_handle_ref_kind_at(cpi_old) !=
+ _new_cp->method_handle_ref_kind_at(cpi_new))
+ return false;
+ int mhi_old = _old_cp->method_handle_index_at(cpi_old);
+ int mhi_new = _new_cp->method_handle_index_at(cpi_new);
+ if ((_old_cp->uncached_klass_ref_at_noresolve(mhi_old) != _new_cp->uncached_klass_ref_at_noresolve(mhi_new)) ||
+ (_old_cp->uncached_name_ref_at(mhi_old) != _new_cp->uncached_name_ref_at(mhi_new)) ||
+ (_old_cp->uncached_signature_ref_at(mhi_old) != _new_cp->uncached_signature_ref_at(mhi_new)))
+ return false;
+ } else {
+ return false; // unknown tag
}
break;
}
--- a/hotspot/src/share/vm/runtime/sharedRuntime.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/runtime/sharedRuntime.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -779,7 +779,7 @@
// Find bytecode
Bytecode_invoke* bytecode = Bytecode_invoke_at(caller, bci);
- bc = bytecode->adjusted_invoke_code();
+ bc = bytecode->java_code();
int bytecode_index = bytecode->index();
// Find receiver for non-static call
--- a/hotspot/src/share/vm/utilities/constantTag.cpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/utilities/constantTag.cpp Wed Jun 09 18:50:45 2010 -0700
@@ -28,56 +28,85 @@
#ifndef PRODUCT
void constantTag::print_on(outputStream* st) const {
+ st->print(internal_name());
+}
+
+#endif // PRODUCT
+
+BasicType constantTag::basic_type() const {
switch (_tag) {
- case JVM_CONSTANT_Class :
- st->print("Class");
- break;
- case JVM_CONSTANT_Fieldref :
- st->print("Field");
- break;
- case JVM_CONSTANT_Methodref :
- st->print("Method");
- break;
- case JVM_CONSTANT_InterfaceMethodref :
- st->print("InterfaceMethod");
- break;
- case JVM_CONSTANT_String :
- st->print("String");
- break;
case JVM_CONSTANT_Integer :
- st->print("Integer");
- break;
+ return T_INT;
case JVM_CONSTANT_Float :
- st->print("Float");
- break;
+ return T_FLOAT;
case JVM_CONSTANT_Long :
- st->print("Long");
- break;
+ return T_LONG;
case JVM_CONSTANT_Double :
- st->print("Double");
- break;
- case JVM_CONSTANT_NameAndType :
- st->print("NameAndType");
- break;
- case JVM_CONSTANT_Utf8 :
- st->print("Utf8");
- break;
+ return T_DOUBLE;
+
+ case JVM_CONSTANT_Class :
+ case JVM_CONSTANT_String :
case JVM_CONSTANT_UnresolvedClass :
- st->print("Unresolved class");
- break;
+ case JVM_CONSTANT_UnresolvedClassInError :
case JVM_CONSTANT_ClassIndex :
- st->print("Unresolved class index");
- break;
case JVM_CONSTANT_UnresolvedString :
- st->print("Unresolved string");
- break;
case JVM_CONSTANT_StringIndex :
- st->print("Unresolved string index");
- break;
+ case JVM_CONSTANT_MethodHandle :
+ case JVM_CONSTANT_MethodType :
+ case JVM_CONSTANT_Object :
+ return T_OBJECT;
default:
ShouldNotReachHere();
- break;
+ return T_ILLEGAL;
}
}
-#endif // PRODUCT
+
+
+const char* constantTag::internal_name() const {
+ switch (_tag) {
+ case JVM_CONSTANT_Invalid :
+ return "Invalid index";
+ case JVM_CONSTANT_Class :
+ return "Class";
+ case JVM_CONSTANT_Fieldref :
+ return "Field";
+ case JVM_CONSTANT_Methodref :
+ return "Method";
+ case JVM_CONSTANT_InterfaceMethodref :
+ return "InterfaceMethod";
+ case JVM_CONSTANT_String :
+ return "String";
+ case JVM_CONSTANT_Integer :
+ return "Integer";
+ case JVM_CONSTANT_Float :
+ return "Float";
+ case JVM_CONSTANT_Long :
+ return "Long";
+ case JVM_CONSTANT_Double :
+ return "Double";
+ case JVM_CONSTANT_NameAndType :
+ return "NameAndType";
+ case JVM_CONSTANT_MethodHandle :
+ return "MethodHandle";
+ case JVM_CONSTANT_MethodType :
+ return "MethodType";
+ case JVM_CONSTANT_Object :
+ return "Object";
+ case JVM_CONSTANT_Utf8 :
+ return "Utf8";
+ case JVM_CONSTANT_UnresolvedClass :
+ return "Unresolved Class";
+ case JVM_CONSTANT_UnresolvedClassInError :
+ return "Unresolved Class Error";
+ case JVM_CONSTANT_ClassIndex :
+ return "Unresolved Class Index";
+ case JVM_CONSTANT_UnresolvedString :
+ return "Unresolved String";
+ case JVM_CONSTANT_StringIndex :
+ return "Unresolved String Index";
+ default:
+ ShouldNotReachHere();
+ return "Illegal";
+ }
+}
--- a/hotspot/src/share/vm/utilities/constantTag.hpp Mon Jun 07 14:17:01 2010 -0700
+++ b/hotspot/src/share/vm/utilities/constantTag.hpp Wed Jun 09 18:50:45 2010 -0700
@@ -78,13 +78,24 @@
bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
bool is_symbol() const { return is_utf8(); }
+ bool is_method_type() const { return _tag == JVM_CONSTANT_MethodType; }
+ bool is_method_handle() const { return _tag == JVM_CONSTANT_MethodHandle; }
+
+ constantTag() {
+ _tag = JVM_CONSTANT_Invalid;
+ }
constantTag(jbyte tag) {
assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
+ (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_MethodType) ||
(tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
_tag = tag;
}
jbyte value() { return _tag; }
+ BasicType basic_type() const; // if used with ldc, what kind of value gets pushed?
+
+ const char* internal_name() const; // for error reporting
+
void print_on(outputStream* st) const PRODUCT_RETURN;
};