Package ghidra.pcode.emu.jit.gen.op

Enum Class IntZExtOpGen

java.lang.Object

java.lang.Enum<IntZExtOpGen>

ghidra.pcode.emu.jit.gen.op.IntZExtOpGen

All Implemented Interfaces:

IntUnOpGen<JitIntZExtOp>, OpGen<JitIntZExtOp>, UnOpGen<JitIntZExtOp>, Serializable, Comparable<IntZExtOpGen>, Constable, org.objectweb.asm.Opcodes

public enum IntZExtOpGen
extends Enum<IntZExtOpGen>
implements IntUnOpGen<JitIntZExtOp>

The generator for a int_zext.

This uses the unary operator generator and emits nothing extra. The unary generator template will emit code to load the input operand, this emits nothing, and then the template emits code to write the output operand, including the necessary type conversion. That type conversion performs the zero extension.

Note that this implementation is equivalent to CopyOpGen, except that differences in operand sizes are expected.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
GEN	The generator singleton

Field Summary

Fields inherited from interface org.objectweb.asm.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_RECORD, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM10_EXPERIMENTAL, ASM4, ASM5, ASM6, ASM7, ASM8, ASM9, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20, V21, V22, V23, V24, V9

Method Summary

Modifier and Type	Method	Description
JitType	generateUnOpRunCode(JitCodeGenerator gen, JitIntZExtOp op, JitControlFlowModel.JitBlock block, JitType uType, org.objectweb.asm.MethodVisitor rv)	Emit code for the unary operator
boolean	isSigned()	Whether this operator is signed
static IntZExtOpGen	valueOf(String name)	Returns the enum constant of this class with the specified name.
static IntZExtOpGen[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ghidra.pcode.emu.jit.gen.op.OpGen

generateInitCode

Methods inherited from interface ghidra.pcode.emu.jit.gen.op.UnOpGen

ext, generateRunCode

Enum Constant Details

GEN

public static final IntZExtOpGen GEN

The generator singleton

Method Details

values

public static IntZExtOpGen[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static IntZExtOpGen valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

isSigned

public boolean isSigned()

Description copied from interface: UnOpGen

Whether this operator is signed

In many cases, the operator itself is not affected by the signedness of the operands; however, if size adjustments to the operands are needed, this can determine how those operands are extended.

Specified by:

isSigned in interface UnOpGen<JitIntZExtOp>

Returns:

true for signed, false if not

generateUnOpRunCode

public JitType generateUnOpRunCode(JitCodeGenerator gen,
 JitIntZExtOp op,
 JitControlFlowModel.JitBlock block,
 JitType uType,
 org.objectweb.asm.MethodVisitor rv)

Emit code for the unary operator

At this point the operand is on the stack. After this returns, code to write the result from the stack into the destination operand will be emitted.

Specified by:

generateUnOpRunCode in interface UnOpGen<JitIntZExtOp>

Parameters:

gen - the code generator

op - the operator

block - the block containing the operator

uType - the actual type of the operand

rv - the method visitor

Returns:

the actual type of the result

Implementation Notes:

No need for explicit zero-extended type conversion (vice IntSExtOpGen), because conversion will happen as a manner of writing the output. Thus, this is identical in operation to CopyOpGen.