Root > Reference > All Functions > InstructionToString

Function InstructionToString

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Converts decoded CPU instruction to string represenstation.

 

Unit

EDisAsm

 

Syntax

 

Code (Delphi)

function InstructionToString(

const AInstr: TInstruction;

const AEncrypt: Boolean = False

): String;

 

Parameters

AInstr [in]

Decoded CPU instruction to convert. Usually this value comes from DecodeInstruction function. Exact structure of TInstruction depends on current CPU. Please, refer to source code of the unit for your CPU (such as EDisAsmX8632.pas, EDisAsmX8664.pas, etc.).

 

Return value

Textual representation of AInstr.

 

Remarks

This function converts already decoded CPU instruction to string.

 

Sample output:

 

Code

006989A2 E805C2F8FF CALL -$073DFB ; ($00624BB0) Unit1.TForm1.CheckVisible

 

First part ("006989A2" in the above example) repeats Address and it's always 8 hex characters for 32-bit process and 16 hex characters for 64-bit process.
Second part ("E805C2F8FF" in the above example) indicate RAW instruction bytes. Its size varies from 2 characters (1 byte) up to 30 characters (15 bytes) for x86-32 - depending on actual CPU instruction. These bytes includes any prefix, opcode, MOD/RM byte, SIB byte, displacement bytes, immediate value bytes.
Third part ("CALL -$073DFB" in the above example) shows actual textual representation of disassembled instruction.
Fourth part ("; ($00624BB0) Unit1.TForm1.CheckVisible" in the above example; optional) contains an optional comment for the instruction (such as call/jmp destination or string data dump).

 

See also




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Last edited: 2018-11-26
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