/// <summary>
/// Set Disassembler Instruction Mnemonic Option.
/// </summary>
/// <param name="hDisassembler">
/// A disassembler handle.
/// </param>
/// <param name="optionValue">
/// A value to set the instruction mnemonic option to.
/// </param>
/// <exception cref="Gee.External.Capstone.CapstoneException">
/// Thrown if the instruction mnemonic option could not be set.
/// </exception>
/// <exception cref="System.ArgumentException">
/// Thrown if the disassembler handle is invalid.
/// </exception>
/// <exception cref="System.ObjectDisposedException">
/// Thrown if the disassembler handle is disposed.
/// </exception>
internal static void SetInstructionMnemonicOption(NativeDisassemblerHandle hDisassembler, ref NativeInstructionMnemonicOptionValue optionValue)
{
var pOptionValue = IntPtr.Zero;
try {
pOptionValue = MarshalExtension.AllocHGlobal <NativeInstructionMnemonicOptionValue>();
Marshal.StructureToPtr(optionValue, pOptionValue, false);
// ...
//
// Throws an exception if the operation fails.
const NativeDisassemblerOptionType optionType = NativeDisassemblerOptionType.SetMnemonic;
var resultCode = NativeCapstoneImport.SetDisassemblerOption(hDisassembler, optionType, pOptionValue);
if (resultCode != NativeCapstoneResultCode.Ok)
{
if (resultCode == NativeCapstoneResultCode.InvalidHandle2)
{
var detailMessage = $"A disassembler handle ({nameof(hDisassembler)}) is invalid.";
throw new ArgumentException(detailMessage, nameof(hDisassembler));
}
else
{
var detailMessage = $"A disassembler option ({optionType}) could not be set.";
throw new CapstoneException(detailMessage);
}
}
}
finally {
if (pOptionValue != IntPtr.Zero)
{
Marshal.FreeHGlobal(pOptionValue);
}
}
}
internal static void SetSkipDataOption(NativeDisassemblerHandle hDisassembler, ref NativeSkipDataOptionValue optionValue)
{
var pOptionValue = IntPtr.Zero;
try {
pOptionValue = MarshalExtension.AllocHGlobal <NativeSkipDataOptionValue>();
Marshal.StructureToPtr(optionValue, pOptionValue, false);
// ...
//
// Throws an exception if the operation fails.
const NativeDisassemblerOptionType optionType = NativeDisassemblerOptionType.SetSkipDataConfig;
var resultCode = NativeCapstoneImport.SetDisassemblerOption(hDisassembler, optionType, pOptionValue);
}
finally {
if (pOptionValue != IntPtr.Zero)
{
Marshal.FreeHGlobal(pOptionValue);
}
}
}
/// <summary>
/// Disassemble Binary Code.
/// </summary>
/// <param name="handle">
/// A Capstone handle. Should not be a null reference.
/// </param>
/// <param name="code">
/// A collection of bytes representing the binary code to disassemble. Should not be a null reference.
/// </param>
/// <param name="count">
/// The number of instructions to disassemble. A 0 indicates all instructions should be disassembled.
/// </param>
/// <param name="startingAddress">
/// The address of the first instruction in the collection of bytes to disassemble.
/// </param>
/// <returns>
/// A native instruction handle.
/// </returns>
/// <exception cref="System.InvalidOperationException">
/// Thrown if the binary code could not be disassembled.
/// </exception>
public static SafeNativeInstructionHandle Disassemble(SafeCapstoneHandle handle, byte[] code, int count, ulong startingAddress)
{
// Copy Code to Unmanaged Memory.
//
// ...
var pCode = MarshalExtension.AllocHGlobal <byte>(code.Length);
Marshal.Copy(code, 0, pCode, code.Length);
var pCount = (UIntPtr)count;
var pHandle = handle.DangerousGetHandle();
var pInstructions = IntPtr.Zero;
var pSize = (UIntPtr)code.Length;
// var uStartingAddress = (ulong) startingAddress;
// Disassemble Binary Code.
//
// ...
var pResultCode = CapstoneImport.Disassemble(unchecked ((UIntPtr)(ulong)(ulong)handle.DangerousGetHandle()), pCode, pSize,
startingAddress, pCount, ref pInstructions);
if (pResultCode == UIntPtr.Zero)
{
throw new InvalidOperationException("Unable to disassemble binary code.");
}
var iResultCode = (int)pResultCode;
var instructions = MarshalExtension.PtrToStructure <NativeInstruction>(pInstructions, iResultCode);
// Free Unmanaged Memory.
//
// Avoid a memory leak.
Marshal.FreeHGlobal(pCode);
var instructionHandle = new SafeNativeInstructionHandle(instructions, pInstructions, pResultCode);
return(instructionHandle);
}