Instr

Instr class is a representation of a CPU instruction.

Constructor

There are 2 ways of constructing objects.

Instr.FromAddr(addr)
Creates object using bytes extracted at address.
Instr.FromParts(data, code, oper)
Creates object using OpData object, OpCode & operation mode. Internal use mostly.

Property name	Description
`Addr`	The Exe address from where this instruction was extracted. Set to -1 if created `FromParts`.
`Prefixes`	List of prefix bytes.
`Codes`	List of opcode bytes.
`MRM`	The extracted/calculated ModRM object.
`SIB`	The extracted/calculated SIBase object.
`Disp`	The displacement value used for any memory pointers. It can be `undefined`.
`BC_Disp`	The byte count of the displacement. The default is 0 for no displacement.
`Immd`	The immediate value used. It can be `undefined`.
`BC_Immd`	The byte count of the immediate value. The default is 0 for no immediates.
`SegNum`	Segment number for FAR type instructions.
`NestLvl`	Nesting level used for ENTER instruction.
`Size`	The total size of the instruction in bytes.
`NextAddr`	The address for the next instruction.

<inst>.addPrefix(p)
Adds the prefix to the instruction. Can be IPrefix or the hex code itself.
<inst>.addOpCode(o)
Adds the opcode byte(s) to the instruction.
<inst>.needModRM()
Checks if the instruction requires a ModRM object.
<inst>.isReversed()
Checks if the instruction has to reverse its argument order.
<inst>.hasAddrOvrd()
Checks if the instruction has an address override prefix (AD16).
<inst>.hasOperOvrd()
Checks if the instruction has an operand override prefix (OPCH).
<inst>.calcImmSize()
Calculates the size of immediate value expected. BC_Immd property is set to the calculated value.
<inst>.toString
Override for toString to construct and return the hex equivalent of the instruction.