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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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31
X86Disassembler/X86/Handlers/Sbb/SbbImmFromRm32Handler.cs
View File

@ -1,5 +1,7 @@
namespace X86Disassembler.X86.Handlers.Sbb;
using X86Disassembler.X86.Operands;
/// <summary>
/// Handler for SBB r/m32, imm32 instruction (0x81 /3)
/// </summary>
@ -8,11 +10,9 @@ public class SbbImmFromRm32Handler : InstructionHandler
/// <summary>
/// Initializes a new instance of the SbbImmFromRm32Handler 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 SbbImmFromRm32Handler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public SbbImmFromRm32Handler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -30,7 +30,7 @@ public class SbbImmFromRm32Handler : InstructionHandler
if (!Decoder.CanReadByte())
return false;
byte modRM = CodeBuffer[Decoder.GetPosition()];
byte modRM = Decoder.PeakByte();
byte reg = (byte) ((modRM & 0x38) >> 3);
return reg == 3; // 3 = SBB
@ -44,8 +44,8 @@ public class SbbImmFromRm32Handler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "sbb";
// Set the instruction type
instruction.Type = InstructionType.Sbb;
if (!Decoder.CanReadByte())
{
@ -63,13 +63,16 @@ public class SbbImmFromRm32Handler : InstructionHandler
// Read the immediate value in little-endian format
var imm32 = Decoder.ReadUInt32();
// Format the immediate value as expected by the tests (0x12345678)
// Note: The bytes are reversed to match the expected format in the tests
string immStr = $"0x{imm32:X8}";
// Set the operands
instruction.Operands = $"{destOperand}, {immStr}";
// Create the immediate operand
var immOperand = OperandFactory.CreateImmediateOperand(imm32);
// Set the structured operands
instruction.StructuredOperands =
[
destOperand,
immOperand
];
return true;
}

29
X86Disassembler/X86/Handlers/Sbb/SbbImmFromRm32SignExtendedHandler.cs
View File

@ -1,5 +1,7 @@
namespace X86Disassembler.X86.Handlers.Sbb;
using X86Disassembler.X86.Operands;
/// <summary>
/// Handler for SBB r/m32, imm8 (sign-extended) instruction (0x83 /3)
/// </summary>
@ -8,11 +10,9 @@ public class SbbImmFromRm32SignExtendedHandler : InstructionHandler
/// <summary>
/// Initializes a new instance of the SbbImmFromRm32SignExtendedHandler 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 SbbImmFromRm32SignExtendedHandler(byte[] codeBuffer, InstructionDecoder decoder, int length)
: base(codeBuffer, decoder, length)
public SbbImmFromRm32SignExtendedHandler(InstructionDecoder decoder)
: base(decoder)
{
}
@ -30,7 +30,7 @@ public class SbbImmFromRm32SignExtendedHandler : InstructionHandler
if (!Decoder.CanReadByte())
return false;
byte modRM = CodeBuffer[Decoder.GetPosition()];
byte modRM = Decoder.PeakByte();
byte reg = (byte) ((modRM & 0x38) >> 3);
return reg == 3; // 3 = SBB
@ -44,8 +44,8 @@ public class SbbImmFromRm32SignExtendedHandler : InstructionHandler
/// <returns>True if the instruction was successfully decoded</returns>
public override bool Decode(byte opcode, Instruction instruction)
{
// Set the mnemonic
instruction.Mnemonic = "sbb";
// Set the instruction type
instruction.Type = InstructionType.Sbb;
if (!Decoder.CanReadByte())
{
@ -62,10 +62,17 @@ public class SbbImmFromRm32SignExtendedHandler : InstructionHandler
}
// Sign-extend to 32 bits
int imm32 = (sbyte) Decoder.ReadByte();
// Set the operands
instruction.Operands = $"{destOperand}, 0x{imm32:X8}";
sbyte imm8 = (sbyte) Decoder.ReadByte();
// Create the immediate operand with sign extension
var immOperand = OperandFactory.CreateImmediateOperand(imm8);
// Set the structured operands
instruction.StructuredOperands =
[
destOperand,
immOperand
];
return true;
}