use of com.android.dx.rop.cst.CstFieldRef in project buck by facebook.
the class ClassReferenceListBuilder method addDependencies.
private void addDependencies(ConstantPool pool) {
for (Constant constant : pool.getEntries()) {
if (constant instanceof CstType) {
checkDescriptor(((CstType) constant).getClassType());
} else if (constant instanceof CstFieldRef) {
checkDescriptor(((CstFieldRef) constant).getType());
} else if (constant instanceof CstMethodRef) {
Prototype proto = ((CstMethodRef) constant).getPrototype();
checkDescriptor(proto.getReturnType());
StdTypeList args = proto.getParameterTypes();
for (int i = 0; i < args.size(); i++) {
checkDescriptor(args.get(i));
}
}
}
}
use of com.android.dx.rop.cst.CstFieldRef in project buck by facebook.
the class RopperMachine method run.
/** {@inheritDoc} */
@Override
public void run(Frame frame, int offset, int opcode) {
/*
* This is the stack pointer after the opcode's arguments have been
* popped.
*/
int stackPointer = maxLocals + frame.getStack().size();
// The sources have to be retrieved before super.run() gets called.
RegisterSpecList sources = getSources(opcode, stackPointer);
int sourceCount = sources.size();
super.run(frame, offset, opcode);
SourcePosition pos = method.makeSourcePosistion(offset);
RegisterSpec localTarget = getLocalTarget(opcode == ByteOps.ISTORE);
int destCount = resultCount();
RegisterSpec dest;
if (destCount == 0) {
dest = null;
switch(opcode) {
case ByteOps.POP:
case ByteOps.POP2:
{
// These simply don't appear in the rop form.
return;
}
}
} else if (localTarget != null) {
dest = localTarget;
} else if (destCount == 1) {
dest = RegisterSpec.make(stackPointer, result(0));
} else {
/*
* This clause only ever applies to the stack manipulation
* ops that have results (that is, dup* and swap but not
* pop*).
*
* What we do is first move all the source registers into
* the "temporary stack" area defined for the method, and
* then move stuff back down onto the main "stack" in the
* arrangement specified by the stack op pattern.
*
* Note: This code ends up emitting a lot of what will
* turn out to be superfluous moves (e.g., moving back and
* forth to the same local when doing a dup); however,
* that makes this code a bit easier (and goodness knows
* it doesn't need any extra complexity), and all the SSA
* stuff is going to want to deal with this sort of
* superfluous assignment anyway, so it should be a wash
* in the end.
*/
int scratchAt = ropper.getFirstTempStackReg();
RegisterSpec[] scratchRegs = new RegisterSpec[sourceCount];
for (int i = 0; i < sourceCount; i++) {
RegisterSpec src = sources.get(i);
TypeBearer type = src.getTypeBearer();
RegisterSpec scratch = src.withReg(scratchAt);
insns.add(new PlainInsn(Rops.opMove(type), pos, scratch, src));
scratchRegs[i] = scratch;
scratchAt += src.getCategory();
}
for (int pattern = getAuxInt(); pattern != 0; pattern >>= 4) {
int which = (pattern & 0x0f) - 1;
RegisterSpec scratch = scratchRegs[which];
TypeBearer type = scratch.getTypeBearer();
insns.add(new PlainInsn(Rops.opMove(type), pos, scratch.withReg(stackPointer), scratch));
stackPointer += type.getType().getCategory();
}
return;
}
TypeBearer destType = (dest != null) ? dest : Type.VOID;
Constant cst = getAuxCst();
int ropOpcode;
Rop rop;
Insn insn;
if (opcode == ByteOps.MULTIANEWARRAY) {
blockCanThrow = true;
// Add the extra instructions for handling multianewarray.
extraBlockCount = 6;
/*
* Add an array constructor for the int[] containing all the
* dimensions.
*/
RegisterSpec dimsReg = RegisterSpec.make(dest.getNextReg(), Type.INT_ARRAY);
rop = Rops.opFilledNewArray(Type.INT_ARRAY, sourceCount);
insn = new ThrowingCstInsn(rop, pos, sources, catches, CstType.INT_ARRAY);
insns.add(insn);
// Add a move-result for the new-filled-array
rop = Rops.opMoveResult(Type.INT_ARRAY);
insn = new PlainInsn(rop, pos, dimsReg, RegisterSpecList.EMPTY);
insns.add(insn);
/*
* Add a const-class instruction for the specified array
* class.
*/
/*
* Remove as many dimensions from the originally specified
* class as are given in the explicit list of dimensions,
* so as to pass the right component class to the standard
* Java library array constructor.
*/
Type componentType = ((CstType) cst).getClassType();
for (int i = 0; i < sourceCount; i++) {
componentType = componentType.getComponentType();
}
RegisterSpec classReg = RegisterSpec.make(dest.getReg(), Type.CLASS);
if (componentType.isPrimitive()) {
/*
* The component type is primitive (e.g., int as opposed
* to Integer), so we have to fetch the corresponding
* TYPE class.
*/
CstFieldRef typeField = CstFieldRef.forPrimitiveType(componentType);
insn = new ThrowingCstInsn(Rops.GET_STATIC_OBJECT, pos, RegisterSpecList.EMPTY, catches, typeField);
} else {
/*
* The component type is an object type, so just make a
* normal class reference.
*/
insn = new ThrowingCstInsn(Rops.CONST_OBJECT, pos, RegisterSpecList.EMPTY, catches, new CstType(componentType));
}
insns.add(insn);
// Add a move-result-pseudo for the get-static or const
rop = Rops.opMoveResultPseudo(classReg.getType());
insn = new PlainInsn(rop, pos, classReg, RegisterSpecList.EMPTY);
insns.add(insn);
/*
* Add a call to the "multianewarray method," that is,
* Array.newInstance(class, dims). Note: The result type
* of newInstance() is Object, which is why the last
* instruction in this sequence is a cast to the right
* type for the original instruction.
*/
RegisterSpec objectReg = RegisterSpec.make(dest.getReg(), Type.OBJECT);
insn = new ThrowingCstInsn(Rops.opInvokeStatic(MULTIANEWARRAY_METHOD.getPrototype()), pos, RegisterSpecList.make(classReg, dimsReg), catches, MULTIANEWARRAY_METHOD);
insns.add(insn);
// Add a move-result.
rop = Rops.opMoveResult(MULTIANEWARRAY_METHOD.getPrototype().getReturnType());
insn = new PlainInsn(rop, pos, objectReg, RegisterSpecList.EMPTY);
insns.add(insn);
/*
* And finally, set up for the remainder of this method to
* add an appropriate cast.
*/
opcode = ByteOps.CHECKCAST;
sources = RegisterSpecList.make(objectReg);
} else if (opcode == ByteOps.JSR) {
// JSR has no Rop instruction
hasJsr = true;
return;
} else if (opcode == ByteOps.RET) {
try {
returnAddress = (ReturnAddress) arg(0);
} catch (ClassCastException ex) {
throw new RuntimeException("Argument to RET was not a ReturnAddress", ex);
}
// RET has no Rop instruction.
return;
}
ropOpcode = jopToRopOpcode(opcode, cst);
rop = Rops.ropFor(ropOpcode, destType, sources, cst);
Insn moveResult = null;
if (dest != null && rop.isCallLike()) {
/*
* We're going to want to have a move-result in the next
* basic block.
*/
extraBlockCount++;
moveResult = new PlainInsn(Rops.opMoveResult(((CstMethodRef) cst).getPrototype().getReturnType()), pos, dest, RegisterSpecList.EMPTY);
dest = null;
} else if (dest != null && rop.canThrow()) {
/*
* We're going to want to have a move-result-pseudo in the
* next basic block.
*/
extraBlockCount++;
moveResult = new PlainInsn(Rops.opMoveResultPseudo(dest.getTypeBearer()), pos, dest, RegisterSpecList.EMPTY);
dest = null;
}
if (ropOpcode == RegOps.NEW_ARRAY) {
/*
* In the original bytecode, this was either a primitive
* array constructor "newarray" or an object array
* constructor "anewarray". In the former case, there is
* no explicit constant, and in the latter, the constant
* is for the element type and not the array type. The rop
* instruction form for both of these is supposed to be
* the resulting array type, so we initialize / alter
* "cst" here, accordingly. Conveniently enough, the rop
* opcode already gets constructed with the proper array
* type.
*/
cst = CstType.intern(rop.getResult());
} else if ((cst == null) && (sourceCount == 2)) {
TypeBearer firstType = sources.get(0).getTypeBearer();
TypeBearer lastType = sources.get(1).getTypeBearer();
if ((lastType.isConstant() || firstType.isConstant()) && advice.hasConstantOperation(rop, sources.get(0), sources.get(1))) {
if (lastType.isConstant()) {
/*
* The target architecture has an instruction that can
* build in the constant found in the second argument,
* so pull it out of the sources and just use it as a
* constant here.
*/
cst = (Constant) lastType;
sources = sources.withoutLast();
// For subtraction, change to addition and invert constant
if (rop.getOpcode() == RegOps.SUB) {
ropOpcode = RegOps.ADD;
CstInteger cstInt = (CstInteger) lastType;
cst = CstInteger.make(-cstInt.getValue());
}
} else {
/*
* The target architecture has an instruction that can
* build in the constant found in the first argument,
* so pull it out of the sources and just use it as a
* constant here.
*/
cst = (Constant) firstType;
sources = sources.withoutFirst();
}
rop = Rops.ropFor(ropOpcode, destType, sources, cst);
}
}
SwitchList cases = getAuxCases();
ArrayList<Constant> initValues = getInitValues();
boolean canThrow = rop.canThrow();
blockCanThrow |= canThrow;
if (cases != null) {
if (cases.size() == 0) {
// It's a default-only switch statement. It can happen!
insn = new PlainInsn(Rops.GOTO, pos, null, RegisterSpecList.EMPTY);
primarySuccessorIndex = 0;
} else {
IntList values = cases.getValues();
insn = new SwitchInsn(rop, pos, dest, sources, values);
primarySuccessorIndex = values.size();
}
} else if (ropOpcode == RegOps.RETURN) {
/*
* Returns get turned into the combination of a move (if
* non-void and if the return doesn't already mention
* register 0) and a goto (to the return block).
*/
if (sources.size() != 0) {
RegisterSpec source = sources.get(0);
TypeBearer type = source.getTypeBearer();
if (source.getReg() != 0) {
insns.add(new PlainInsn(Rops.opMove(type), pos, RegisterSpec.make(0, type), source));
}
}
insn = new PlainInsn(Rops.GOTO, pos, null, RegisterSpecList.EMPTY);
primarySuccessorIndex = 0;
updateReturnOp(rop, pos);
returns = true;
} else if (cst != null) {
if (canThrow) {
insn = new ThrowingCstInsn(rop, pos, sources, catches, cst);
catchesUsed = true;
primarySuccessorIndex = catches.size();
} else {
insn = new PlainCstInsn(rop, pos, dest, sources, cst);
}
} else if (canThrow) {
insn = new ThrowingInsn(rop, pos, sources, catches);
catchesUsed = true;
if (opcode == ByteOps.ATHROW) {
/*
* The op athrow is the only one where it's possible
* to have non-empty successors and yet not have a
* primary successor.
*/
primarySuccessorIndex = -1;
} else {
primarySuccessorIndex = catches.size();
}
} else {
insn = new PlainInsn(rop, pos, dest, sources);
}
insns.add(insn);
if (moveResult != null) {
insns.add(moveResult);
}
/*
* If initValues is non-null, it means that the parser has
* seen a group of compatible constant initialization
* bytecodes that are applied to the current newarray. The
* action we take here is to convert these initialization
* bytecodes into a single fill-array-data ROP which lays out
* all the constant values in a table.
*/
if (initValues != null) {
extraBlockCount++;
insn = new FillArrayDataInsn(Rops.FILL_ARRAY_DATA, pos, RegisterSpecList.make(moveResult.getResult()), initValues, cst);
insns.add(insn);
}
}
use of com.android.dx.rop.cst.CstFieldRef in project RocooFix by dodola.
the class ClassReferenceListBuilder method addDependencies.
private void addDependencies(ConstantPool pool) {
for (Constant constant : pool.getEntries()) {
if (constant instanceof CstType) {
checkDescriptor(((CstType) constant).getClassType());
} else if (constant instanceof CstFieldRef) {
checkDescriptor(((CstFieldRef) constant).getType());
} else if (constant instanceof CstMethodRef) {
Prototype proto = ((CstMethodRef) constant).getPrototype();
checkDescriptor(proto.getReturnType());
StdTypeList args = proto.getParameterTypes();
for (int i = 0; i < args.size(); i++) {
checkDescriptor(args.get(i));
}
}
}
}
use of com.android.dx.rop.cst.CstFieldRef in project J2ME-Loader by nikita36078.
the class ConstantPoolParser method parse0.
/**
* Parses the constant for the given index if it hasn't already been
* parsed, also storing it in the constant pool. This will also
* have the side effect of parsing any entries the indicated one
* depends on.
*
* @param idx which constant
* @return {@code non-null;} the parsed constant
*/
private Constant parse0(int idx, BitSet wasUtf8) {
Constant cst = pool.getOrNull(idx);
if (cst != null) {
return cst;
}
int at = offsets[idx];
try {
int tag = bytes.getUnsignedByte(at);
switch(tag) {
case CONSTANT_Utf8:
{
cst = parseUtf8(at);
wasUtf8.set(idx);
break;
}
case CONSTANT_Integer:
{
int value = bytes.getInt(at + 1);
cst = CstInteger.make(value);
break;
}
case CONSTANT_Float:
{
int bits = bytes.getInt(at + 1);
cst = CstFloat.make(bits);
break;
}
case CONSTANT_Long:
{
long value = bytes.getLong(at + 1);
cst = CstLong.make(value);
break;
}
case CONSTANT_Double:
{
long bits = bytes.getLong(at + 1);
cst = CstDouble.make(bits);
break;
}
case CONSTANT_Class:
{
int nameIndex = bytes.getUnsignedShort(at + 1);
CstString name = (CstString) parse0(nameIndex, wasUtf8);
cst = new CstType(Type.internClassName(name.getString()));
break;
}
case CONSTANT_String:
{
int stringIndex = bytes.getUnsignedShort(at + 1);
cst = parse0(stringIndex, wasUtf8);
break;
}
case CONSTANT_Fieldref:
{
int classIndex = bytes.getUnsignedShort(at + 1);
CstType type = (CstType) parse0(classIndex, wasUtf8);
int natIndex = bytes.getUnsignedShort(at + 3);
CstNat nat = (CstNat) parse0(natIndex, wasUtf8);
cst = new CstFieldRef(type, nat);
break;
}
case CONSTANT_Methodref:
{
int classIndex = bytes.getUnsignedShort(at + 1);
CstType type = (CstType) parse0(classIndex, wasUtf8);
int natIndex = bytes.getUnsignedShort(at + 3);
CstNat nat = (CstNat) parse0(natIndex, wasUtf8);
cst = new CstMethodRef(type, nat);
break;
}
case CONSTANT_InterfaceMethodref:
{
int classIndex = bytes.getUnsignedShort(at + 1);
CstType type = (CstType) parse0(classIndex, wasUtf8);
int natIndex = bytes.getUnsignedShort(at + 3);
CstNat nat = (CstNat) parse0(natIndex, wasUtf8);
cst = new CstInterfaceMethodRef(type, nat);
break;
}
case CONSTANT_NameAndType:
{
int nameIndex = bytes.getUnsignedShort(at + 1);
CstString name = (CstString) parse0(nameIndex, wasUtf8);
int descriptorIndex = bytes.getUnsignedShort(at + 3);
CstString descriptor = (CstString) parse0(descriptorIndex, wasUtf8);
cst = new CstNat(name, descriptor);
break;
}
case CONSTANT_MethodHandle:
{
int kind = bytes.getUnsignedByte(at + 1);
int constantIndex = bytes.getUnsignedShort(at + 2);
Constant ref;
switch(kind) {
case CstMethodHandle.KIND_GETFIELD:
case CstMethodHandle.KIND_GETSTATIC:
case CstMethodHandle.KIND_PUTFIELD:
case CstMethodHandle.KIND_PUTSTATIC:
CstFieldRef field = (CstFieldRef) parse0(constantIndex, wasUtf8);
ref = field;
break;
case CstMethodHandle.KIND_INVOKEVIRTUAL:
case CstMethodHandle.KIND_NEWINVOKESPECIAL:
CstMethodRef method = (CstMethodRef) parse0(constantIndex, wasUtf8);
ref = method;
break;
case CstMethodHandle.KIND_INVOKESTATIC:
case CstMethodHandle.KIND_INVOKESPECIAL:
ref = parse0(constantIndex, wasUtf8);
if (!(ref instanceof CstMethodRef || ref instanceof CstInterfaceMethodRef)) {
throw new ParseException("Unsupported ref constant type for MethodHandle " + ref.getClass());
}
break;
case CstMethodHandle.KIND_INVOKEINTERFACE:
CstInterfaceMethodRef interfaceMethod = (CstInterfaceMethodRef) parse0(constantIndex, wasUtf8);
ref = interfaceMethod;
break;
default:
throw new ParseException("Unsupported MethodHandle kind: " + kind);
}
cst = CstMethodHandle.make(kind, ref);
break;
}
case CONSTANT_MethodType:
{
int descriptorIndex = bytes.getUnsignedShort(at + 1);
CstString descriptor = (CstString) parse0(descriptorIndex, wasUtf8);
cst = CstMethodType.make(descriptor);
break;
}
case CONSTANT_InvokeDynamic:
{
int bootstrapMethodIndex = bytes.getUnsignedShort(at + 1);
int natIndex = bytes.getUnsignedShort(at + 3);
CstNat nat = (CstNat) parse0(natIndex, wasUtf8);
cst = CstInvokeDynamic.make(bootstrapMethodIndex, nat);
break;
}
default:
{
throw new ParseException("unknown tag byte: " + Hex.u1(tag));
}
}
} catch (ParseException ex) {
ex.addContext("...while parsing cst " + Hex.u2(idx) + " at offset " + Hex.u4(at));
throw ex;
} catch (RuntimeException ex) {
ParseException pe = new ParseException(ex);
pe.addContext("...while parsing cst " + Hex.u2(idx) + " at offset " + Hex.u4(at));
throw pe;
}
pool.set(idx, cst);
return cst;
}
use of com.android.dx.rop.cst.CstFieldRef in project J2ME-Loader by nikita36078.
the class Form22c method isCompatible.
/**
* {@inheritDoc}
*/
@Override
public boolean isCompatible(DalvInsn insn) {
RegisterSpecList regs = insn.getRegisters();
if (!((insn instanceof CstInsn) && (regs.size() == 2) && unsignedFitsInNibble(regs.get(0).getReg()) && unsignedFitsInNibble(regs.get(1).getReg()))) {
return false;
}
CstInsn ci = (CstInsn) insn;
int cpi = ci.getIndex();
if (!unsignedFitsInShort(cpi)) {
return false;
}
Constant cst = ci.getConstant();
return (cst instanceof CstType) || (cst instanceof CstFieldRef);
}
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