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more refactoring

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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
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4
X86Disassembler/X86/Handlers/Sub/SubAlImm8Handler.cs
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@ -34,9 +34,7 @@ public class SubAlImm8Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}

5
X86Disassembler/X86/Handlers/Sub/SubAxImm16Handler.cs
View File

@ -38,10 +38,7 @@ public class SubAxImm16Handler : InstructionHandler
// Set the mnemonic
instruction.Mnemonic = "sub";
int position = Decoder.GetPosition();
// Check if we have enough bytes for the immediate value
if (position + 1 >= Length)
if (!Decoder.CanReadUShort())
{
return false;
}

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;
}

8
X86Disassembler/X86/Handlers/Sub/SubImmFromRm8Handler.cs
View File

@ -27,11 +27,10 @@ public class SubImmFromRm8Handler : 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
@ -52,8 +51,7 @@ public class SubImmFromRm8Handler : InstructionHandler
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// Read the immediate byte
var position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}

4
X86Disassembler/X86/Handlers/Sub/SubR16Rm16Handler.cs
View File

@ -38,9 +38,7 @@ public class SubR16Rm16Handler : InstructionHandler
// Set the mnemonic
instruction.Mnemonic = "sub";
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}

4
X86Disassembler/X86/Handlers/Sub/SubR32Rm32Handler.cs
View File

@ -34,9 +34,7 @@ public class SubR32Rm32Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}

4
X86Disassembler/X86/Handlers/Sub/SubR8Rm8Handler.cs
View File

@ -37,9 +37,7 @@ public class SubR8Rm8Handler : InstructionHandler
// Set the mnemonic
instruction.Mnemonic = "sub";
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}

5
X86Disassembler/X86/Handlers/Sub/SubRm16R16Handler.cs
View File

@ -38,9 +38,7 @@ public class SubRm16R16Handler : InstructionHandler
// Set the mnemonic
instruction.Mnemonic = "sub";
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}
@ -59,7 +57,6 @@ public class SubRm16R16Handler : InstructionHandler
}
else // Memory operand
{
// Replace "dword" with "word" in the memory operand
destOperand = destOperand.Replace("dword", "word");
instruction.Operands = $"{destOperand}, {regName}";

4
X86Disassembler/X86/Handlers/Sub/SubRm32R32Handler.cs
View File

@ -34,9 +34,7 @@ public class SubRm32R32Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}

4
X86Disassembler/X86/Handlers/Sub/SubRm8R8Handler.cs
View File

@ -37,9 +37,7 @@ public class SubRm8R8Handler : InstructionHandler
// Set the mnemonic
instruction.Mnemonic = "sub";
int position = Decoder.GetPosition();
if (position >= Length)
if (!Decoder.CanReadByte())
{
return false;
}