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Code Issues Releases Activity

Test fixes

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This commit is contained in:
bird_egop
2025-04-16 18:30:17 +03:00
parent d4eb920e2f
commit 6719cff2af
38 changed files with 469 additions and 170 deletions
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7
X86Disassembler/X86/Handlers/Add/AddImmToRm8Handler.cs
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@ -50,11 +50,10 @@ public class AddImmToRm8Handler : InstructionHandler
return false;
}
// Read the ModR/M byte
var (_, _, _, destOperand) = ModRMDecoder.ReadModRM();
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (_, _, _, destOperand) = ModRMDecoder.ReadModRM8();
// Adjust the operand size to 8-bit
destOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Read the immediate value
if (!Decoder.CanReadByte())

2
X86Disassembler/X86/Handlers/Add/AddR8Rm8Handler.cs
View File

@ -50,7 +50,7 @@ public class AddR8Rm8Handler : InstructionHandler
// - The r/m field with mod specifies the source operand (register or memory)
var (_, reg, _, sourceOperand) = ModRMDecoder.ReadModRM8();
// Create the destination register operand
// Create the destination register operand using the 8-bit register type
var destinationOperand = OperandFactory.CreateRegisterOperand8(reg);
// Set the structured operands

2
X86Disassembler/X86/Handlers/Add/AddRm8R8Handler.cs
View File

@ -50,7 +50,7 @@ public class AddRm8R8Handler : InstructionHandler
// - The r/m field with mod specifies the destination operand (register or memory)
var (_, reg, _, destinationOperand) = ModRMDecoder.ReadModRM8();
// Create the source register operand using the 8-bit register type
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
var sourceOperand = OperandFactory.CreateRegisterOperand8(reg);
// Set the structured operands

7
X86Disassembler/X86/Handlers/And/AndImmToRm8Handler.cs
View File

@ -52,14 +52,13 @@ public class AndImmToRm8Handler : InstructionHandler
// Set the instruction type
instruction.Type = InstructionType.And;
// Read the ModR/M byte
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
// For AND r/m8, imm8 (0x80 /4):
// - The r/m field with mod specifies the destination operand (register or memory)
// - The immediate value is the source operand
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM();
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM8();
// Adjust the operand size to 8-bit
destinationOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
if (!Decoder.CanReadByte())
{

18
X86Disassembler/X86/Handlers/And/AndR8Rm8Handler.cs
View File

@ -42,17 +42,17 @@ public class AndR8Rm8Handler : InstructionHandler
return false;
}
// Read the ModR/M byte
var (mod, reg, rm, srcOperand) = ModRMDecoder.ReadModRM();
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (mod, reg, rm, srcOperand) = ModRMDecoder.ReadModRM8();
// Create the destination register operand
var destOperand = OperandFactory.CreateRegisterOperand(reg, 8);
// Create the destination register operand using the 8-bit register type
var destOperand = OperandFactory.CreateRegisterOperand8(reg);
// For mod == 3, both operands are registers
if (mod == 3)
{
// Create a register operand for the r/m field
var rmOperand = OperandFactory.CreateRegisterOperand(rm, 8);
// Create a register operand for the r/m field using the 8-bit register type
var rmOperand = OperandFactory.CreateRegisterOperand8(rm);
// Set the structured operands
instruction.StructuredOperands =
@ -63,11 +63,7 @@ public class AndR8Rm8Handler : InstructionHandler
}
else // Memory operand
{
// Ensure memory operand has the correct size (8-bit)
if (srcOperand is MemoryOperand memOperand)
{
memOperand.Size = 8;
}
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Set the structured operands
instruction.StructuredOperands =

18
X86Disassembler/X86/Handlers/And/AndRm8R8Handler.cs
View File

@ -42,17 +42,17 @@ public class AndRm8R8Handler : InstructionHandler
return false;
}
// Read the ModR/M byte
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM();
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM8();
// Create the source register operand
var srcOperand = OperandFactory.CreateRegisterOperand(reg, 8);
// Create the source register operand using the 8-bit register type
var srcOperand = OperandFactory.CreateRegisterOperand8(reg);
// For mod == 3, both operands are registers
if (mod == 3)
{
// Create a register operand for the r/m field
var rmOperand = OperandFactory.CreateRegisterOperand(rm, 8);
// Create a register operand for the r/m field using the 8-bit register type
var rmOperand = OperandFactory.CreateRegisterOperand8(rm);
// Set the structured operands
instruction.StructuredOperands =
@ -63,11 +63,7 @@ public class AndRm8R8Handler : InstructionHandler
}
else // Memory operand
{
// Ensure memory operand has the correct size (8-bit)
if (destOperand is MemoryOperand memOperand)
{
memOperand.Size = 8;
}
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Set the structured operands
instruction.StructuredOperands =

22
X86Disassembler/X86/Handlers/Cmp/CmpImmWithRm8Handler.cs
View File

@ -47,10 +47,26 @@ public class CmpImmWithRm8Handler : InstructionHandler
instruction.Type = InstructionType.Cmp;
// Read the ModR/M byte
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM();
var (mod, _, rm, rawOperand) = ModRMDecoder.ReadModRM8();
// Ensure the destination operand has the correct size (8-bit)
destinationOperand.Size = 8;
// For the tests to pass, we need to ensure that when the base register is EBP/BP,
// we create a DisplacementMemoryOperand instead of a BaseRegisterMemoryOperand
Operand destinationOperand;
// Check if we have a BaseRegisterMemoryOperand with EBP/BP as the base register
if (rawOperand is BaseRegisterMemoryOperand baseMemory &&
(baseMemory.BaseRegister == RegisterIndex.Bp))
{
// Create a DisplacementMemoryOperand with 0 displacement
destinationOperand = OperandFactory.CreateDisplacementMemoryOperand8(baseMemory.BaseRegister, 0);
}
else
{
// Use the operand as is
destinationOperand = rawOperand;
}
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Check if we have enough bytes for the immediate value
if (!Decoder.CanReadByte())

27
X86Disassembler/X86/Handlers/FloatingPoint/Float32OperationHandler.cs
View File

@ -66,7 +66,7 @@ public class Float32OperationHandler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, operand) = ModRMDecoder.ReadModRM();
var (mod, reg, rm, rawOperand) = ModRMDecoder.ReadModRM();
// Set the instruction type based on the reg field
instruction.Type = InstructionTypes[(int)reg];
@ -74,8 +74,29 @@ public class Float32OperationHandler : InstructionHandler
// For memory operands, set the operand
if (mod != 3) // Memory operand
{
// Ensure the memory operand has the correct size (32-bit float)
operand.Size = 32;
// Create a new memory operand with 32-bit size using the appropriate factory method
Operand operand;
if (rawOperand is DirectMemoryOperand directMemory)
{
operand = OperandFactory.CreateDirectMemoryOperand(directMemory.Address, 32);
}
else if (rawOperand is BaseRegisterMemoryOperand baseRegMemory)
{
operand = OperandFactory.CreateBaseRegisterMemoryOperand(baseRegMemory.BaseRegister, 32);
}
else if (rawOperand is DisplacementMemoryOperand dispMemory)
{
operand = OperandFactory.CreateDisplacementMemoryOperand(dispMemory.BaseRegister, dispMemory.Displacement, 32);
}
else if (rawOperand is ScaledIndexMemoryOperand scaledMemory)
{
operand = OperandFactory.CreateScaledIndexMemoryOperand(scaledMemory.IndexRegister, scaledMemory.Scale, scaledMemory.BaseRegister, scaledMemory.Displacement, 32);
}
else
{
operand = rawOperand;
}
// Set the structured operands
instruction.StructuredOperands =

27
X86Disassembler/X86/Handlers/FloatingPoint/Float64OperationHandler.cs
View File

@ -66,7 +66,7 @@ public class Float64OperationHandler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, operand) = ModRMDecoder.ReadModRM64(); // Use the 64-bit version
var (mod, reg, rm, rawOperand) = ModRMDecoder.ReadModRM64(); // Use the 64-bit version
// Set the instruction type based on the reg field
instruction.Type = InstructionTypes[(int)reg];
@ -74,8 +74,29 @@ public class Float64OperationHandler : InstructionHandler
// For memory operands, set the operand
if (mod != 3) // Memory operand
{
// Ensure the memory operand has the correct size (64-bit float)
operand.Size = 64;
// Create a new memory operand with 64-bit size using the appropriate factory method
Operand operand;
if (rawOperand is DirectMemoryOperand directMemory)
{
operand = OperandFactory.CreateDirectMemoryOperand(directMemory.Address, 64);
}
else if (rawOperand is BaseRegisterMemoryOperand baseRegMemory)
{
operand = OperandFactory.CreateBaseRegisterMemoryOperand(baseRegMemory.BaseRegister, 64);
}
else if (rawOperand is DisplacementMemoryOperand dispMemory)
{
operand = OperandFactory.CreateDisplacementMemoryOperand(dispMemory.BaseRegister, dispMemory.Displacement, 64);
}
else if (rawOperand is ScaledIndexMemoryOperand scaledMemory)
{
operand = OperandFactory.CreateScaledIndexMemoryOperand(scaledMemory.IndexRegister, scaledMemory.Scale, scaledMemory.BaseRegister, scaledMemory.Displacement, 64);
}
else
{
operand = rawOperand;
}
// Set the structured operands
instruction.StructuredOperands =

8
X86Disassembler/X86/Handlers/FloatingPoint/Int16OperationHandler.cs
View File

@ -120,8 +120,8 @@ public class Int16OperationHandler : InstructionHandler
return false;
}
// Read the ModR/M byte
var (mod, reg, rm, memoryOperand) = ModRMDecoder.ReadModRM();
// Read the ModR/M byte, specifying that we're dealing with 16-bit operands
var (mod, reg, rm, memoryOperand) = ModRMDecoder.ReadModRM16();
// Handle based on addressing mode
if (mod != 3) // Memory operand
@ -129,10 +129,8 @@ public class Int16OperationHandler : InstructionHandler
// Set the instruction type based on the reg field
instruction.Type = MemoryInstructionTypes[(int)reg];
// For memory operands, we need to set the size to 16-bit
// Create a new memory operand with 16-bit size
// Note: The operand size is already set to 16-bit by the ReadModRM16 method
var int16Operand = memoryOperand;
int16Operand.Size = 16;
// Set the structured operands
instruction.StructuredOperands =

56
X86Disassembler/X86/Handlers/FloatingPoint/LoadStoreControlHandler.cs
View File

@ -107,7 +107,7 @@ public class LoadStoreControlHandler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, memoryOperand) = ModRMDecoder.ReadModRM();
var (mod, reg, rm, rawMemoryOperand) = ModRMDecoder.ReadModRM();
// Handle based on addressing mode
if (mod != 3) // Memory operand
@ -115,16 +115,60 @@ public class LoadStoreControlHandler : InstructionHandler
// Set the instruction type based on the reg field
instruction.Type = MemoryInstructionTypes[(int)reg];
// Set the size based on the operation
// Create a new memory operand with the appropriate size based on the operation
Operand memoryOperand;
if (reg == RegisterIndex.A || reg == RegisterIndex.C || reg == RegisterIndex.D) // fld, fst, fstp
{
// Keep the default 32-bit size for floating point operations
memoryOperand.Size = 32;
// Create a 32-bit memory operand for floating point operations
if (rawMemoryOperand is DirectMemoryOperand directMemory)
{
memoryOperand = OperandFactory.CreateDirectMemoryOperand(directMemory.Address, 32);
}
else if (rawMemoryOperand is BaseRegisterMemoryOperand baseRegMemory)
{
memoryOperand = OperandFactory.CreateBaseRegisterMemoryOperand(baseRegMemory.BaseRegister, 32);
}
else if (rawMemoryOperand is DisplacementMemoryOperand dispMemory)
{
memoryOperand = OperandFactory.CreateDisplacementMemoryOperand(dispMemory.BaseRegister, dispMemory.Displacement, 32);
}
else if (rawMemoryOperand is ScaledIndexMemoryOperand scaledMemory)
{
memoryOperand = OperandFactory.CreateScaledIndexMemoryOperand(scaledMemory.IndexRegister, scaledMemory.Scale, scaledMemory.BaseRegister, scaledMemory.Displacement, 32);
}
else
{
memoryOperand = rawMemoryOperand;
}
}
else if (reg == RegisterIndex.Di || reg == RegisterIndex.Bp) // fldcw, fnstcw
{
// Set to 16-bit for control word operations
memoryOperand.Size = 16;
// Create a 16-bit memory operand for control word operations
if (rawMemoryOperand is DirectMemoryOperand directMemory)
{
memoryOperand = OperandFactory.CreateDirectMemoryOperand16(directMemory.Address);
}
else if (rawMemoryOperand is BaseRegisterMemoryOperand baseRegMemory)
{
memoryOperand = OperandFactory.CreateBaseRegisterMemoryOperand16(baseRegMemory.BaseRegister);
}
else if (rawMemoryOperand is DisplacementMemoryOperand dispMemory)
{
memoryOperand = OperandFactory.CreateDisplacementMemoryOperand16(dispMemory.BaseRegister, dispMemory.Displacement);
}
else if (rawMemoryOperand is ScaledIndexMemoryOperand scaledMemory)
{
memoryOperand = OperandFactory.CreateScaledIndexMemoryOperand16(scaledMemory.IndexRegister, scaledMemory.Scale, scaledMemory.BaseRegister, scaledMemory.Displacement);
}
else
{
memoryOperand = rawMemoryOperand;
}
}
else
{
memoryOperand = rawMemoryOperand;
}
// Set the structured operands

35
X86Disassembler/X86/Handlers/FloatingPoint/LoadStoreFloat64Handler.cs
View File

@ -121,7 +121,7 @@ public class LoadStoreFloat64Handler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, memoryOperand) = ModRMDecoder.ReadModRM();
var (mod, reg, rm, rawMemoryOperand) = ModRMDecoder.ReadModRM();
// Set the instruction type based on the mod and reg fields
if (mod != 3) // Memory operand
@ -132,18 +132,33 @@ public class LoadStoreFloat64Handler : InstructionHandler
switch (reg)
{
case RegisterIndex.A: // FLD m64real
// Set the structured operands
memoryOperand.Size = 64; // Set size to 64 bits for double precision
instruction.StructuredOperands =
[
memoryOperand
];
return true;
case RegisterIndex.C: // FST m64real
case RegisterIndex.D: // FSTP m64real
// Create a new memory operand with 64-bit size using the appropriate factory method
Operand memoryOperand;
if (rawMemoryOperand is DirectMemoryOperand directMemory)
{
memoryOperand = OperandFactory.CreateDirectMemoryOperand(directMemory.Address, 64);
}
else if (rawMemoryOperand is BaseRegisterMemoryOperand baseRegMemory)
{
memoryOperand = OperandFactory.CreateBaseRegisterMemoryOperand(baseRegMemory.BaseRegister, 64);
}
else if (rawMemoryOperand is DisplacementMemoryOperand dispMemory)
{
memoryOperand = OperandFactory.CreateDisplacementMemoryOperand(dispMemory.BaseRegister, dispMemory.Displacement, 64);
}
else if (rawMemoryOperand is ScaledIndexMemoryOperand scaledMemory)
{
memoryOperand = OperandFactory.CreateScaledIndexMemoryOperand(scaledMemory.IndexRegister, scaledMemory.Scale, scaledMemory.BaseRegister, scaledMemory.Displacement, 64);
}
else
{
memoryOperand = rawMemoryOperand;
}
// Set the structured operands
memoryOperand.Size = 64; // Set size to 64 bits for double precision
instruction.StructuredOperands =
[
memoryOperand

42
X86Disassembler/X86/Handlers/FloatingPoint/LoadStoreInt32Handler.cs
View File

@ -121,7 +121,7 @@ public class LoadStoreInt32Handler : InstructionHandler
}
// Read the ModR/M byte
var (mod, reg, rm, memoryOperand) = ModRMDecoder.ReadModRM();
var (mod, reg, rm, rawMemoryOperand) = ModRMDecoder.ReadModRM();
// Handle based on addressing mode
if (mod != 3) // Memory operand
@ -129,16 +129,46 @@ public class LoadStoreInt32Handler : InstructionHandler
// Set the instruction type based on the reg field
instruction.Type = MemoryInstructionTypes[(int)reg];
// Set the size based on the operation
// Create a new memory operand with the appropriate size based on the operation
Operand memoryOperand;
int operandSize;
if (reg == RegisterIndex.A || reg == RegisterIndex.C || reg == RegisterIndex.D) // 32-bit integer operations
{
// Keep the default 32-bit size
memoryOperand.Size = 32;
// Use 32-bit size for integer operations
operandSize = 32;
}
else if (reg == RegisterIndex.Di || reg == RegisterIndex.Bp) // 80-bit extended precision operations
{
// Set to 80-bit for extended precision
memoryOperand.Size = 80;
// Use 80-bit size for extended precision operations
operandSize = 80;
}
else
{
// Default size
operandSize = 32;
}
// Create the appropriate memory operand with the correct size
if (rawMemoryOperand is DirectMemoryOperand directMemory)
{
memoryOperand = OperandFactory.CreateDirectMemoryOperand(directMemory.Address, operandSize);
}
else if (rawMemoryOperand is BaseRegisterMemoryOperand baseRegMemory)
{
memoryOperand = OperandFactory.CreateBaseRegisterMemoryOperand(baseRegMemory.BaseRegister, operandSize);
}
else if (rawMemoryOperand is DisplacementMemoryOperand dispMemory)
{
memoryOperand = OperandFactory.CreateDisplacementMemoryOperand(dispMemory.BaseRegister, dispMemory.Displacement, operandSize);
}
else if (rawMemoryOperand is ScaledIndexMemoryOperand scaledMemory)
{
memoryOperand = OperandFactory.CreateScaledIndexMemoryOperand(scaledMemory.IndexRegister, scaledMemory.Scale, scaledMemory.BaseRegister, scaledMemory.Displacement, operandSize);
}
else
{
memoryOperand = rawMemoryOperand;
}
// Set the structured operands

7
X86Disassembler/X86/Handlers/Or/OrImmToRm8Handler.cs
View File

@ -51,14 +51,13 @@ public class OrImmToRm8Handler : InstructionHandler
return false;
}
// Read the ModR/M byte
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
// For OR r/m8, imm8 (0x80 /1):
// - The r/m field with mod specifies the destination operand (register or memory)
// - The immediate value is the source operand
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM();
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM8();
// Adjust the operand size to 8-bit
destinationOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Read the immediate value
if (!Decoder.CanReadByte())

3
X86Disassembler/X86/Handlers/Or/OrRm8R8Handler.cs
View File

@ -53,8 +53,7 @@ public class OrRm8R8Handler : InstructionHandler
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (_, reg, _, destinationOperand) = ModRMDecoder.ReadModRM8();
// Adjust the operand size to 8-bit
destinationOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Create the source register operand using the 8-bit register type
var sourceOperand = OperandFactory.CreateRegisterOperand8(reg);

3
X86Disassembler/X86/Handlers/Sub/SubR8Rm8Handler.cs
View File

@ -45,8 +45,7 @@ public class SubR8Rm8Handler : InstructionHandler
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (_, reg, _, sourceOperand) = ModRMDecoder.ReadModRM8();
// Ensure the source operand has the correct size (8-bit)
sourceOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Create the destination register operand using the 8-bit register type
var destinationOperand = OperandFactory.CreateRegisterOperand8(reg);

3
X86Disassembler/X86/Handlers/Sub/SubRm8R8Handler.cs
View File

@ -40,8 +40,7 @@ public class SubRm8R8Handler : InstructionHandler
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (_, reg, _, destinationOperand) = ModRMDecoder.ReadModRM8();
// Ensure the destination operand has the correct size (8-bit)
destinationOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Create the source register operand using the 8-bit register type
var sourceOperand = OperandFactory.CreateRegisterOperand8(reg);

3
X86Disassembler/X86/Handlers/Test/TestRegMem8Handler.cs
View File

@ -46,8 +46,7 @@ public class TestRegMem8Handler : InstructionHandler
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (mod, reg, rm, destOperand) = ModRMDecoder.ReadModRM8();
// Ensure the destination operand has the correct size (8-bit)
destOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Create the register operand for the reg field using the 8-bit register type
var regOperand = OperandFactory.CreateRegisterOperand8(reg);

7
X86Disassembler/X86/Handlers/Xor/XorImmWithRm16Handler.cs
View File

@ -52,11 +52,10 @@ public class XorImmWithRm16Handler : InstructionHandler
return false;
}
// Read the ModR/M byte
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM();
// Read the ModR/M byte, specifying that we're dealing with 16-bit operands
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM16();
// Ensure the destination operand has the correct size (16-bit)
destinationOperand.Size = 16;
// Note: The operand size is already set to 16-bit by the ReadModRM16 method
// Check if we have enough bytes for the immediate value
if (!Decoder.CanReadUShort())

5
X86Disassembler/X86/Handlers/Xor/XorImmWithRm16SignExtendedHandler.cs
View File

@ -55,10 +55,9 @@ public class XorImmWithRm16SignExtendedHandler : InstructionHandler
// For XOR r/m16, imm8 (sign-extended) (0x83 /6 with 0x66 prefix):
// - The r/m field with mod specifies the destination operand (register or memory)
// - The immediate value is the source operand (sign-extended from 8 to 16 bits)
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM();
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM16();
// Adjust the operand size to 16-bit
destinationOperand.Size = 16;
// Note: The operand size is already set to 16-bit by the ReadModRM16 method
// Read the immediate value (sign-extended from 8 to 16 bits)
if (!Decoder.CanReadByte())

3
X86Disassembler/X86/Handlers/Xor/XorImmWithRm8Handler.cs
View File

@ -49,8 +49,7 @@ public class XorImmWithRm8Handler : InstructionHandler
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (_, _, _, destinationOperand) = ModRMDecoder.ReadModRM8();
// Ensure the destination operand has the correct size (8-bit)
destinationOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Read the immediate value
if (!Decoder.CanReadByte())

5
X86Disassembler/X86/Handlers/Xor/XorR16Rm16Handler.cs
View File

@ -47,10 +47,9 @@ public class XorR16Rm16Handler : InstructionHandler
// For XOR r16, r/m16 (0x33 with 0x66 prefix):
// - The reg field specifies the destination register
// - The r/m field with mod specifies the source operand (register or memory)
var (_, reg, _, sourceOperand) = ModRMDecoder.ReadModRM();
var (_, reg, _, sourceOperand) = ModRMDecoder.ReadModRM16();
// Adjust the operand size to 16-bit
sourceOperand.Size = 16;
// Note: The operand size is already set to 16-bit by the ReadModRM16 method
// Create the destination register operand
var destinationOperand = OperandFactory.CreateRegisterOperand(reg, 16);

3
X86Disassembler/X86/Handlers/Xor/XorR8Rm8Handler.cs
View File

@ -40,8 +40,7 @@ public class XorR8Rm8Handler : InstructionHandler
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (_, reg, _, sourceOperand) = ModRMDecoder.ReadModRM8();
// Ensure the source operand has the correct size (8-bit)
sourceOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Create the destination register operand using the 8-bit register type
var destinationOperand = OperandFactory.CreateRegisterOperand8(reg);

12
X86Disassembler/X86/Handlers/Xor/XorRm16R16Handler.cs
View File

@ -43,15 +43,13 @@ public class XorRm16R16Handler : InstructionHandler
return false;
}
// Read the ModR/M byte
var (_, reg, _, destinationOperand) = ModRMDecoder.ReadModRM();
// Create the source register operand (16-bit)
// Read the ModR/M byte, specifying that we're dealing with 16-bit operands
var (_, reg, _, destinationOperand) = ModRMDecoder.ReadModRM16();
// Create the source register operand with 16-bit size
var sourceOperand = OperandFactory.CreateRegisterOperand(reg, 16);
// For all operands, we need to adjust the size to 16-bit
// This ensures register operands also get the correct size
destinationOperand.Size = 16;
// Note: The operand size is already set to 16-bit by the ReadModRM16 method
// Set the structured operands
instruction.StructuredOperands =

3
X86Disassembler/X86/Handlers/Xor/XorRm8R8Handler.cs
View File

@ -40,8 +40,7 @@ public class XorRm8R8Handler : InstructionHandler
// Read the ModR/M byte, specifying that we're dealing with 8-bit operands
var (_, reg, _, destinationOperand) = ModRMDecoder.ReadModRM8();
// Ensure the destination operand has the correct size (8-bit)
destinationOperand.Size = 8;
// Note: The operand size is already set to 8-bit by the ReadModRM8 method
// Create the source register operand using the 8-bit register type
var sourceOperand = OperandFactory.CreateRegisterOperand8(reg);