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Code Issues Releases Activity

Updated instruction handlers to use Type and StructuredOperands instead of Mnemonic and Operands

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This commit is contained in:
bird_egop
2025-04-14 22:08:50 +03:00
parent c516e063e7
commit 685eeda03d
136 changed files with 3694 additions and 2584 deletions
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27
X86Disassembler/X86/Handlers/ArithmeticUnary/MulRm32Handler.cs
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@ -1,3 +1,5 @@
using X86Disassembler.X86.Operands;
namespace X86Disassembler.X86.Handlers.ArithmeticUnary;
/// <summary>
@ -8,11 +10,9 @@ public class MulRm32Handler : InstructionHandler
/// <summary>
/// Initializes a new instance of the MulRm32Handler class
/// </summary>
/// <param name="codeBuffer">The buffer containing the code to decode</param>
/// <param name="decoder">The instruction decoder that owns this handler</param>
/// <param name="length">The length of the buffer</param>
public MulRm32Handler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public MulRm32Handler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -27,11 +27,10 @@ public class MulRm32Handler : InstructionHandler
return false;
// Check if the reg field of the ModR/M byte is 4 (MUL)
int position = Decoder.GetPosition();
if (!Decoder.CanReadByte())
return false;
byte modRM = CodeBuffer[position];
byte modRM = Decoder.PeakByte();
byte reg = (byte) ((modRM & 0x38) >> 3);
return reg == 4; // 4 = MUL
@ -45,8 +44,8 @@ public class MulRm32Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "mul";
// Set the instruction type
instruction.Type = InstructionType.Mul;
if (!Decoder.CanReadByte())
{
@ -54,10 +53,16 @@ public class MulRm32Handler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// For MUL r/m32 (0xF7 /4):
// - The r/m field with mod specifies the operand (register or memory)
var (mod, reg, rm, operand) = ModRMDecoder.ReadModRM();
// Set the operands
instruction.Operands = destOperand;
// Set the structured operands
// MUL has only one operand
instruction.StructuredOperands =
[
operand
];
return true;
}