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comparison agent/src/share/classes/sun/jvm/hotspot/tools/jcore/ClassWriter.java @ 1602:136b78722a08

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6939203: JSR 292 needs method handle constants Summary: Add new CP types CONSTANT_MethodHandle, CONSTANT_MethodType; extend 'ldc' bytecode. Reviewed-by: twisti, never
author jrose
date Wed, 09 Jun 2010 18:50:45 -0700
parents c18cbe5936b8
children 083fde3b838e
comparison
equal deleted inserted replaced
1585:49fac4acd688 1602:136b78722a08
59 protected short _lineNumberTableIndex; 59 protected short _lineNumberTableIndex;
60 protected short _localVariableTableIndex; 60 protected short _localVariableTableIndex;
61 protected short _signatureIndex; 61 protected short _signatureIndex;
62 62
63 protected static int extractHighShortFromInt(int val) { 63 protected static int extractHighShortFromInt(int val) {
64 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc.
64 return (val >> 16) & 0xFFFF; 65 return (val >> 16) & 0xFFFF;
65 } 66 }
66 67
67 protected static int extractLowShortFromInt(int val) { 68 protected static int extractLowShortFromInt(int val) {
69 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc.
68 return val & 0xFFFF; 70 return val & 0xFFFF;
69 } 71 }
70 72
71 public ClassWriter(InstanceKlass kls, OutputStream os) { 73 public ClassWriter(InstanceKlass kls, OutputStream os) {
72 klass = kls; 74 klass = kls;
295 dos.writeShort(signatureIndex); 297 dos.writeShort(signatureIndex);
296 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex 298 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex
297 + ", type = " + signatureIndex); 299 + ", type = " + signatureIndex);
298 break; 300 break;
299 } 301 }
302
303 case JVM_CONSTANT_MethodHandle: {
304 dos.writeByte(cpConstType);
305 int value = cpool.getIntAt(ci);
306 short refIndex = (short) extractHighShortFromInt(value);
307 byte refKind = (byte) extractLowShortFromInt(value);
308 dos.writeByte(refKind);
309 dos.writeShort(refIndex);
310 if (DEBUG) debugMessage("CP[" + ci + "] = MH index = " + refIndex
311 + ", kind = " + refKind);
312 break;
313 }
314
315 case JVM_CONSTANT_MethodType: {
316 dos.writeByte(cpConstType);
317 int value = cpool.getIntAt(ci);
318 short refIndex = (short) value;
319 dos.writeShort(refIndex);
320 if (DEBUG) debugMessage("CP[" + ci + "] = MT index = " + refIndex);
321 break;
322 }
323
300 default: 324 default:
301 throw new InternalError("Unknown tag: " + cpConstType); 325 throw new InternalError("Unknown tag: " + cpConstType);
302 } // switch 326 } // switch
303 } 327 }
304 } 328 }