mirrors/ParkanPlayground
0
Fork 0
mirror of https://github.com/sampletext32/ParkanPlayground.git synced 2025-06-20 16:18:37 +03:00
Code Issues Releases Activity

more refactoring

Browse Source
This commit is contained in:
bird_egop
2025-04-14 01:08:14 +03:00
parent f54dc10596
commit 99b93523a4
78 changed files with 379 additions and 594 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
X86Disassembler/X86/Handlers/Sub/SubImmFromRm32Handler.cs
View File

@ -27,11 +27,10 @@ public class SubImmFromRm32Handler : InstructionHandler
return false;
// Check if the reg field of the ModR/M byte is 5 (SUB)
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
return false;
byte modRM = CodeBuffer[position];
byte modRM = CodeBuffer[Decoder.GetPosition()];
byte reg = (byte) ((modRM & 0x38) >> 3);
return reg == 5; // 5 = SUB
@ -48,25 +47,16 @@ public class SubImmFromRm32Handler : InstructionHandler
// Set the mnemonic
instruction.Mnemonic = "sub";
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}
// Read the ModR/M byte
// Extract the fields from the ModR/M byte
// Let the ModRMDecoder handle the ModR/M byte and any additional bytes (SIB, displacement)
// This will update the decoder position to point after the ModR/M and any additional bytes
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// Get the updated position after ModR/M decoding
position = Decoder.GetPosition();
// Read the immediate value
if (position + 3 >= Length)
if (!Decoder.CanReadUInt())
{
return false;
}