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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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41
X86Disassembler/X86/Handlers/Mov/MovRm8Imm8Handler.cs
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@ -1,3 +1,5 @@
using X86Disassembler.X86.Operands;
namespace X86Disassembler.X86.Handlers.Mov;
/// <summary>
@ -8,11 +10,9 @@ public class MovRm8Imm8Handler : InstructionHandler
/// <summary>
/// Initializes a new instance of the MovRm8Imm8Handler 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 MovRm8Imm8Handler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public MovRm8Imm8Handler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -34,8 +34,8 @@ public class MovRm8Imm8Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "mov";
// Set the instruction type
instruction.Type = InstructionType.Mov;
// Check if we have enough bytes for the ModR/M byte
if (!Decoder.CanReadByte())
@ -44,7 +44,10 @@ public class MovRm8Imm8Handler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// For MOV r/m8, imm8 (0xC6):
// - The r/m field with mod specifies the destination operand (register or memory)
// - The immediate value is the source operand
var (mod, reg, rm, destinationOperand) = ModRMDecoder.ReadModRM();
// MOV r/m8, imm8 only uses reg=0
if (reg != 0)
@ -52,17 +55,8 @@ public class MovRm8Imm8Handler : InstructionHandler
return false;
}
// For direct register addressing (mod == 3), use 8-bit register names
if (mod == 3)
{
// Use 8-bit register names for direct register addressing
destOperand = ModRMDecoder.GetRegisterName(rm, 8);
}
else
{
// Replace the size prefix with "byte ptr" for memory operands
destOperand = destOperand.Replace("dword ptr", "byte ptr");
}
// Adjust the operand size to 8-bit
destinationOperand.Size = 8;
// Read the immediate value
if (!Decoder.CanReadByte())
@ -72,8 +66,15 @@ public class MovRm8Imm8Handler : InstructionHandler
byte imm8 = Decoder.ReadByte();
// Set the operands
instruction.Operands = $"{destOperand}, 0x{imm8:X2}";
// Create the source immediate operand
var sourceOperand = OperandFactory.CreateImmediateOperand(imm8, 8);
// Set the structured operands
instruction.StructuredOperands =
[
destinationOperand,
sourceOperand
];
return true;
}