1 /*
2 * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package jdk.internal.classfile.impl;
26
27 import java.lang.classfile.*;
28 import java.lang.classfile.attribute.CodeAttribute;
29 import java.lang.classfile.attribute.RuntimeInvisibleTypeAnnotationsAttribute;
30 import java.lang.classfile.attribute.RuntimeVisibleTypeAnnotationsAttribute;
31 import java.lang.classfile.attribute.StackMapTableAttribute;
32 import java.lang.classfile.attribute.UnknownAttribute;
33 import java.lang.classfile.constantpool.ClassEntry;
34 import java.lang.classfile.instruction.*;
35 import java.util.ArrayList;
36 import java.util.Collections;
37 import java.util.List;
38 import java.util.Objects;
39 import java.util.Optional;
40 import java.util.function.Consumer;
41
42 import static jdk.internal.classfile.impl.StackMapGenerator.*;
43 import static jdk.internal.classfile.impl.RawBytecodeHelper.*;
44
45 public final class CodeImpl
46 extends BoundAttribute.BoundCodeAttribute
47 implements LabelContext {
48
49 static final Instruction[] SINGLETON_INSTRUCTIONS = new Instruction[256];
50
51 static {
52 for (var o : Opcode.values()) {
53 if (o.sizeIfFixed() == 1) {
54 SINGLETON_INSTRUCTIONS[o.bytecode()] = switch (o.kind()) {
55 case ARRAY_LOAD -> ArrayLoadInstruction.of(o);
56 case ARRAY_STORE -> ArrayStoreInstruction.of(o);
57 case CONSTANT -> ConstantInstruction.ofIntrinsic(o);
58 case CONVERT -> ConvertInstruction.of(o);
59 case LOAD -> new AbstractInstruction.UnboundLoadInstruction(o, BytecodeHelpers.intrinsicLoadSlot(o));
60 case MONITOR -> MonitorInstruction.of(o);
61 case NOP -> NopInstruction.of();
62 case OPERATOR -> OperatorInstruction.of(o);
63 case RETURN -> ReturnInstruction.of(o);
64 case STACK -> StackInstruction.of(o);
65 case STORE -> new AbstractInstruction.UnboundStoreInstruction(o, BytecodeHelpers.intrinsicStoreSlot(o));
66 case THROW_EXCEPTION -> ThrowInstruction.of();
67 default -> throw new AssertionError("invalid opcode: " + o);
68 };
69 }
70 }
71 }
72
73 List<ExceptionCatch> exceptionTable;
74 List<Attribute<?>> attributes;
75
76 // Inflated for iteration
77 LabelImpl[] labels;
78 int[] lineNumbers;
79 boolean inflated;
80
81 public CodeImpl(AttributedElement enclosing,
82 ClassReader reader,
83 AttributeMapper<CodeAttribute> mapper,
84 int payloadStart) {
85 super(enclosing, reader, mapper, payloadStart);
86 }
87
88 // LabelContext
89
90 @Override
91 public Label newLabel() {
92 throw new UnsupportedOperationException("CodeAttribute only supports fixed labels");
93 }
94
95 @Override
96 public void setLabelTarget(Label label, int bci) {
97 throw new UnsupportedOperationException("CodeAttribute only supports fixed labels");
98 }
99
100 @Override
101 public Label getLabel(int bci) {
102 if (bci < 0 || bci > codeLength)
103 throw new IllegalArgumentException(String.format("Bytecode offset out of range; bci=%d, codeLength=%d",
104 bci, codeLength));
105 if (labels == null)
106 labels = new LabelImpl[codeLength + 1];
107 LabelImpl l = labels[bci];
108 if (l == null)
109 l = labels[bci] = new LabelImpl(this, bci);
110 return l;
111 }
112
113 @Override
114 public int labelToBci(Label label) {
115 LabelImpl lab = (LabelImpl) label;
116 if (lab.labelContext() != this)
117 throw new IllegalArgumentException(String.format("Illegal label reuse; context=%s, label=%s",
118 this, lab.labelContext()));
119 return lab.getBCI();
120 }
121
122 private void inflateMetadata() {
123 if (!inflated) {
124 if (labels == null)
125 labels = new LabelImpl[codeLength + 1];
126 if (classReader.context().passLineNumbers())
127 inflateLineNumbers();
128 inflateJumpTargets();
129 inflateTypeAnnotations();
130 inflated = true;
131 }
132 }
133
134 // CodeAttribute
135
136 @Override
137 public List<Attribute<?>> attributes() {
138 if (attributes == null) {
139 attributes = BoundAttribute.readAttributes(this, classReader, attributePos, classReader.customAttributes());
140 }
141 return attributes;
142 }
143
144 @Override
145 public void writeTo(BufWriterImpl buf) {
146 if (buf.canWriteDirect(classReader)) {
147 super.writeTo(buf);
148 }
149 else {
150 DirectCodeBuilder.build((MethodInfo) enclosingMethod,
151 Util.writingAll(this),
152 (SplitConstantPool)buf.constantPool(),
153 buf.context(),
154 null).writeTo(buf);
155 }
156 }
157
158 // CodeModel
159
160 @Override
161 public Optional<MethodModel> parent() {
162 return Optional.of(enclosingMethod);
163 }
164
165 @Override
166 public void forEach(Consumer<? super CodeElement> consumer) {
167 Objects.requireNonNull(consumer);
168 inflateMetadata();
169 boolean doLineNumbers = (lineNumbers != null);
170 generateCatchTargets(consumer);
171 if (classReader.context().passDebugElements())
172 generateDebugElements(consumer);
173 generateUserAttributes(consumer);
174 for (int pos=codeStart; pos<codeEnd; ) {
175 if (labels[pos - codeStart] != null)
176 consumer.accept(labels[pos - codeStart]);
177 if (doLineNumbers && lineNumbers[pos - codeStart] != 0)
178 consumer.accept(LineNumberImpl.of(lineNumbers[pos - codeStart]));
179 int bc = classReader.readU1(pos);
180 Instruction instr = bcToInstruction(bc, pos);
181 consumer.accept(instr);
182 pos += instr.sizeInBytes();
183 }
184 // There might be labels pointing to the bci at codeEnd
185 if (labels[codeEnd-codeStart] != null)
186 consumer.accept(labels[codeEnd - codeStart]);
187 if (doLineNumbers && lineNumbers[codeEnd - codeStart] != 0)
188 consumer.accept(LineNumberImpl.of(lineNumbers[codeEnd - codeStart]));
189 }
190
191 @Override
192 public List<ExceptionCatch> exceptionHandlers() {
193 if (exceptionTable == null) {
194 inflateMetadata();
195 exceptionTable = new ArrayList<>(exceptionHandlerCnt);
196 iterateExceptionHandlers(new ExceptionHandlerAction() {
197 @Override
198 public void accept(int s, int e, int h, int c) {
199 ClassEntry catchTypeEntry = c == 0
200 ? null
201 : constantPool().entryByIndex(c, ClassEntry.class);
202 exceptionTable.add(new AbstractPseudoInstruction.ExceptionCatchImpl(getLabel(h), getLabel(s), getLabel(e), catchTypeEntry));
203 }
204 });
205 exceptionTable = Collections.unmodifiableList(exceptionTable);
206 }
207 return exceptionTable;
208 }
209
210 private void generateUserAttributes(Consumer<? super CodeElement> consumer) {
211 for (var attr : attributes) {
212 if (attr instanceof CustomAttribute || attr instanceof UnknownAttribute) {
213 consumer.accept((CodeElement) attr);
214 }
215 }
216 }
217
218 public boolean compareCodeBytes(BufWriterImpl buf, int offset, int len) {
219 return codeLength == len
220 && classReader.compare(buf, offset, codeStart, codeLength);
221 }
222
223 private int adjustForObjectOrUninitialized(int bci) {
224 int vt = classReader.readU1(bci);
225 //inflate newTarget labels from Uninitialized VTIs
226 if (vt == 8) inflateLabel(classReader.readU2(bci + 1));
227 return (vt == 7 || vt == 8) ? bci + 3 : bci + 1;
228 }
229
230 private void inflateLabel(int bci) {
231 if (bci < 0 || bci > codeLength)
232 throw new IllegalArgumentException(String.format("Bytecode offset out of range; bci=%d, codeLength=%d",
233 bci, codeLength));
234 if (labels[bci] == null)
235 labels[bci] = new LabelImpl(this, bci);
236 }
237
238 private void inflateLineNumbers() {
239 for (Attribute<?> a : attributes()) {
240 if (a.attributeMapper() == Attributes.lineNumberTable()) {
241 BoundLineNumberTableAttribute attr = (BoundLineNumberTableAttribute) a;
242 if (lineNumbers == null)
243 lineNumbers = new int[codeLength + 1];
244
245 int nLn = classReader.readU2(attr.payloadStart);
246 int p = attr.payloadStart + 2;
247 int pEnd = p + (nLn * 4);
248 for (; p < pEnd; p += 4) {
249 int startPc = classReader.readU2(p);
250 if (startPc > codeLength) {
251 throw new IllegalArgumentException(String.format(
252 "Line number start_pc out of range; start_pc=%d, codeLength=%d", startPc, codeLength));
253 }
254 int lineNumber = classReader.readU2(p + 2);
255 lineNumbers[startPc] = lineNumber;
256 }
257 }
258 }
259 }
260
261 private void inflateJumpTargets() {
262 Optional<StackMapTableAttribute> a = findAttribute(Attributes.stackMapTable());
263 if (a.isEmpty()) {
264 if (classReader.readU2(6) <= ClassFile.JAVA_6_VERSION) {
265 //fallback to jump targets inflation without StackMapTableAttribute
266 for (int pos=codeStart; pos<codeEnd; ) {
267 var i = bcToInstruction(classReader.readU1(pos), pos);
268 switch (i.opcode().kind()) {
269 case BRANCH -> ((BranchInstruction) i).target();
270 case DISCONTINUED_JSR -> ((DiscontinuedInstruction.JsrInstruction) i).target();
271 case LOOKUP_SWITCH -> {
272 var ls = (LookupSwitchInstruction) i;
273 ls.defaultTarget();
274 ls.cases();
275 }
276 case TABLE_SWITCH -> {
277 var ts = (TableSwitchInstruction) i;
278 ts.defaultTarget();
279 ts.cases();
280 }
281 default -> {}
282 }
283 pos += i.sizeInBytes();
284 }
285 }
286 return;
287 }
288 int stackMapPos = ((BoundAttribute<StackMapTableAttribute>) a.get()).payloadStart;
289
290 int bci = -1; //compensate for offsetDelta + 1
291 int nEntries = classReader.readU2(stackMapPos);
292 int p = stackMapPos + 2;
293 for (int i = 0; i < nEntries; ++i) {
294 int frameType = classReader.readU1(p);
295 int offsetDelta;
296 if (frameType <= SAME_FRAME_END) {
297 offsetDelta = frameType;
298 ++p;
299 }
300 else if (frameType <= SAME_LOCALS_1_STACK_ITEM_FRAME_END) {
301 offsetDelta = frameType & 0x3f;
302 p = adjustForObjectOrUninitialized(p + 1);
303 }
304 else
305 switch (frameType) {
306 case SAME_LOCALS_1_STACK_ITEM_EXTENDED -> {
307 offsetDelta = classReader.readU2(p + 1);
308 p = adjustForObjectOrUninitialized(p + 3);
309 }
310 case CHOP_FRAME_START, CHOP_FRAME_START + 1, CHOP_FRAME_END, SAME_FRAME_EXTENDED -> {
311 offsetDelta = classReader.readU2(p + 1);
312 p += 3;
313 }
314 case APPEND_FRAME_START, APPEND_FRAME_START + 1, APPEND_FRAME_END -> {
315 offsetDelta = classReader.readU2(p + 1);
316 int k = frameType - APPEND_FRAME_START + 1;
317 p += 3;
318 for (int c = 0; c < k; ++c) {
319 p = adjustForObjectOrUninitialized(p);
320 }
321 }
322 case FULL_FRAME -> {
323 offsetDelta = classReader.readU2(p + 1);
324 p += 3;
325 int k = classReader.readU2(p);
326 p += 2;
327 for (int c = 0; c < k; ++c) {
328 p = adjustForObjectOrUninitialized(p);
329 }
330 k = classReader.readU2(p);
331 p += 2;
332 for (int c = 0; c < k; ++c) {
333 p = adjustForObjectOrUninitialized(p);
334 }
335 }
336 default -> throw new IllegalArgumentException("Bad frame type: " + frameType);
337 }
338 bci += offsetDelta + 1;
339 inflateLabel(bci);
340 }
341 }
342
343 private void inflateTypeAnnotations() {
344 findAttribute(Attributes.runtimeVisibleTypeAnnotations()).ifPresent(RuntimeVisibleTypeAnnotationsAttribute::annotations);
345 findAttribute(Attributes.runtimeInvisibleTypeAnnotations()).ifPresent(RuntimeInvisibleTypeAnnotationsAttribute::annotations);
346 }
347
348 private void generateCatchTargets(Consumer<? super CodeElement> consumer) {
349 // We attach all catch targets to bci zero, because trying to attach them
350 // to their range could subtly affect the order of exception processing
351 iterateExceptionHandlers(new ExceptionHandlerAction() {
352 @Override
353 public void accept(int s, int e, int h, int c) {
354 ClassEntry catchType = c == 0
355 ? null
356 : classReader.entryByIndex(c, ClassEntry.class);
357 consumer.accept(new AbstractPseudoInstruction.ExceptionCatchImpl(getLabel(h), getLabel(s), getLabel(e), catchType));
358 }
359 });
360 }
361
362 private void generateDebugElements(Consumer<? super CodeElement> consumer) {
363 for (Attribute<?> a : attributes()) {
364 if (a.attributeMapper() == Attributes.characterRangeTable()) {
365 var attr = (BoundCharacterRangeTableAttribute) a;
366 int cnt = classReader.readU2(attr.payloadStart);
367 int p = attr.payloadStart + 2;
368 int pEnd = p + (cnt * 14);
369 for (; p < pEnd; p += 14) {
370 var instruction = new BoundCharacterRange(this, p);
371 inflateLabel(instruction.startPc());
372 inflateLabel(instruction.endPc() + 1);
373 consumer.accept(instruction);
374 }
375 }
376 else if (a.attributeMapper() == Attributes.localVariableTable()) {
377 var attr = (BoundLocalVariableTableAttribute) a;
378 int cnt = classReader.readU2(attr.payloadStart);
379 int p = attr.payloadStart + 2;
380 int pEnd = p + (cnt * 10);
381 for (; p < pEnd; p += 10) {
382 BoundLocalVariable instruction = new BoundLocalVariable(this, p);
383 inflateLabel(instruction.startPc());
384 inflateLabel(instruction.startPc() + instruction.length());
385 consumer.accept(instruction);
386 }
387 }
388 else if (a.attributeMapper() == Attributes.localVariableTypeTable()) {
389 var attr = (BoundLocalVariableTypeTableAttribute) a;
390 int cnt = classReader.readU2(attr.payloadStart);
391 int p = attr.payloadStart + 2;
392 int pEnd = p + (cnt * 10);
393 for (; p < pEnd; p += 10) {
394 BoundLocalVariableType instruction = new BoundLocalVariableType(this, p);
395 inflateLabel(instruction.startPc());
396 inflateLabel(instruction.startPc() + instruction.length());
397 consumer.accept(instruction);
398 }
399 }
400 else if (a.attributeMapper() == Attributes.runtimeVisibleTypeAnnotations()) {
401 consumer.accept((BoundRuntimeVisibleTypeAnnotationsAttribute) a);
402 }
403 else if (a.attributeMapper() == Attributes.runtimeInvisibleTypeAnnotations()) {
404 consumer.accept((BoundRuntimeInvisibleTypeAnnotationsAttribute) a);
405 }
406 }
407 }
408
409 public interface ExceptionHandlerAction {
410 void accept(int start, int end, int handler, int catchTypeIndex);
411 }
412
413 public void iterateExceptionHandlers(ExceptionHandlerAction a) {
414 int p = exceptionHandlerPos + 2;
415 for (int i = 0; i < exceptionHandlerCnt; ++i) {
416 a.accept(classReader.readU2(p), classReader.readU2(p + 2), classReader.readU2(p + 4), classReader.readU2(p + 6));
417 p += 8;
418 }
419 }
420
421 private Instruction bcToInstruction(int bc, int pos) {
422 return switch (bc) {
423 case BIPUSH -> new AbstractInstruction.BoundArgumentConstantInstruction(Opcode.BIPUSH, CodeImpl.this, pos);
424 case SIPUSH -> new AbstractInstruction.BoundArgumentConstantInstruction(Opcode.SIPUSH, CodeImpl.this, pos);
425 case LDC -> new AbstractInstruction.BoundLoadConstantInstruction(Opcode.LDC, CodeImpl.this, pos);
426 case LDC_W -> new AbstractInstruction.BoundLoadConstantInstruction(Opcode.LDC_W, CodeImpl.this, pos);
427 case LDC2_W -> new AbstractInstruction.BoundLoadConstantInstruction(Opcode.LDC2_W, CodeImpl.this, pos);
428 case ILOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.ILOAD, CodeImpl.this, pos);
429 case LLOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.LLOAD, CodeImpl.this, pos);
430 case FLOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.FLOAD, CodeImpl.this, pos);
431 case DLOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.DLOAD, CodeImpl.this, pos);
432 case ALOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.ALOAD, CodeImpl.this, pos);
433 case ISTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.ISTORE, CodeImpl.this, pos);
434 case LSTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.LSTORE, CodeImpl.this, pos);
435 case FSTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.FSTORE, CodeImpl.this, pos);
436 case DSTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.DSTORE, CodeImpl.this, pos);
437 case ASTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.ASTORE, CodeImpl.this, pos);
438 case IINC -> new AbstractInstruction.BoundIncrementInstruction(Opcode.IINC, CodeImpl.this, pos);
439 case IFEQ -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFEQ, CodeImpl.this, pos);
440 case IFNE -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFNE, CodeImpl.this, pos);
441 case IFLT -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFLT, CodeImpl.this, pos);
442 case IFGE -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFGE, CodeImpl.this, pos);
443 case IFGT -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFGT, CodeImpl.this, pos);
444 case IFLE -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFLE, CodeImpl.this, pos);
445 case IF_ICMPEQ -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ICMPEQ, CodeImpl.this, pos);
446 case IF_ICMPNE -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ICMPNE, CodeImpl.this, pos);
447 case IF_ICMPLT -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ICMPLT, CodeImpl.this, pos);
448 case IF_ICMPGE -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ICMPGE, CodeImpl.this, pos);
449 case IF_ICMPGT -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ICMPGT, CodeImpl.this, pos);
450 case IF_ICMPLE -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ICMPLE, CodeImpl.this, pos);
451 case IF_ACMPEQ -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ACMPEQ, CodeImpl.this, pos);
452 case IF_ACMPNE -> new AbstractInstruction.BoundBranchInstruction(Opcode.IF_ACMPNE, CodeImpl.this, pos);
453 case GOTO -> new AbstractInstruction.BoundBranchInstruction(Opcode.GOTO, CodeImpl.this, pos);
454 case TABLESWITCH -> new AbstractInstruction.BoundTableSwitchInstruction(Opcode.TABLESWITCH, CodeImpl.this, pos);
455 case LOOKUPSWITCH -> new AbstractInstruction.BoundLookupSwitchInstruction(Opcode.LOOKUPSWITCH, CodeImpl.this, pos);
456 case GETSTATIC -> new AbstractInstruction.BoundFieldInstruction(Opcode.GETSTATIC, CodeImpl.this, pos);
457 case PUTSTATIC -> new AbstractInstruction.BoundFieldInstruction(Opcode.PUTSTATIC, CodeImpl.this, pos);
458 case GETFIELD -> new AbstractInstruction.BoundFieldInstruction(Opcode.GETFIELD, CodeImpl.this, pos);
459 case PUTFIELD -> new AbstractInstruction.BoundFieldInstruction(Opcode.PUTFIELD, CodeImpl.this, pos);
460 case INVOKEVIRTUAL -> new AbstractInstruction.BoundInvokeInstruction(Opcode.INVOKEVIRTUAL, CodeImpl.this, pos);
461 case INVOKESPECIAL -> new AbstractInstruction.BoundInvokeInstruction(Opcode.INVOKESPECIAL, CodeImpl.this, pos);
462 case INVOKESTATIC -> new AbstractInstruction.BoundInvokeInstruction(Opcode.INVOKESTATIC, CodeImpl.this, pos);
463 case INVOKEINTERFACE -> new AbstractInstruction.BoundInvokeInterfaceInstruction(Opcode.INVOKEINTERFACE, CodeImpl.this, pos);
464 case INVOKEDYNAMIC -> new AbstractInstruction.BoundInvokeDynamicInstruction(Opcode.INVOKEDYNAMIC, CodeImpl.this, pos);
465 case NEW -> new AbstractInstruction.BoundNewObjectInstruction(CodeImpl.this, pos);
466 case NEWARRAY -> new AbstractInstruction.BoundNewPrimitiveArrayInstruction(Opcode.NEWARRAY, CodeImpl.this, pos);
467 case ANEWARRAY -> new AbstractInstruction.BoundNewReferenceArrayInstruction(Opcode.ANEWARRAY, CodeImpl.this, pos);
468 case CHECKCAST -> new AbstractInstruction.BoundTypeCheckInstruction(Opcode.CHECKCAST, CodeImpl.this, pos);
469 case INSTANCEOF -> new AbstractInstruction.BoundTypeCheckInstruction(Opcode.INSTANCEOF, CodeImpl.this, pos);
470
471 case WIDE -> {
472 int bclow = classReader.readU1(pos + 1);
473 yield switch (bclow) {
474 case ILOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.ILOAD_W, this, pos);
475 case LLOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.LLOAD_W, this, pos);
476 case FLOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.FLOAD_W, this, pos);
477 case DLOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.DLOAD_W, this, pos);
478 case ALOAD -> new AbstractInstruction.BoundLoadInstruction(Opcode.ALOAD_W, this, pos);
479 case ISTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.ISTORE_W, this, pos);
480 case LSTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.LSTORE_W, this, pos);
481 case FSTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.FSTORE_W, this, pos);
482 case DSTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.DSTORE_W, this, pos);
483 case ASTORE -> new AbstractInstruction.BoundStoreInstruction(Opcode.ASTORE_W, this, pos);
484 case IINC -> new AbstractInstruction.BoundIncrementInstruction(Opcode.IINC_W, this, pos);
485 case RET -> new AbstractInstruction.BoundRetInstruction(Opcode.RET_W, this, pos);
486 default -> throw new IllegalArgumentException("unknown wide instruction: " + bclow);
487 };
488 }
489
490 case MULTIANEWARRAY -> new AbstractInstruction.BoundNewMultidimensionalArrayInstruction(Opcode.MULTIANEWARRAY, CodeImpl.this, pos);
491 case IFNULL -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFNULL, CodeImpl.this, pos);
492 case IFNONNULL -> new AbstractInstruction.BoundBranchInstruction(Opcode.IFNONNULL, CodeImpl.this, pos);
493 case GOTO_W -> new AbstractInstruction.BoundBranchInstruction(Opcode.GOTO_W, CodeImpl.this, pos);
494
495 case JSR -> new AbstractInstruction.BoundJsrInstruction(Opcode.JSR, CodeImpl.this, pos);
496 case RET -> new AbstractInstruction.BoundRetInstruction(Opcode.RET, this, pos);
497 case JSR_W -> new AbstractInstruction.BoundJsrInstruction(Opcode.JSR_W, CodeImpl.this, pos);
498 default -> {
499 Instruction instr = SINGLETON_INSTRUCTIONS[bc];
500 if (instr == null)
501 throw new IllegalArgumentException("unknown instruction: " + bc);
502 yield instr;
503 }
504 };
505 }
506
507 @Override
508 public String toString() {
509 return String.format("CodeModel[id=%d]", System.identityHashCode(this));
510 }
511 }