/// <summary>
/// Creates a new instance of the FASM assembler.
/// </summary>
/// <param name="textSize">
/// The minimum size of the buffer to be used for passing the
/// text to be assembled to FASM Assembler.
/// </param>
/// <param name="resultSize">
/// The minimum size of the buffer to be used for FASM to return the
/// text to be assembled.
/// </param>
public Assembler(int textSize = 0x10000, int resultSize = 0x8000)
{
// Attempt allocation of memory X times.
AllocateText(textSize, 3);
AllocateResult(resultSize, 3);
IntPtr fasmDllHandle;
// Get path of FASM dll
string fasmDllPath = GetFasmDLLPath();
fasmDllHandle = LoadLibraryW(fasmDllPath);
// Throw exception if dll not loaded.
if (fasmDllHandle == null)
{
throw new FasmWrapperException("Failed to load FASM dll. The FASM dll pointer from LoadLibraryW is null.");
}
// Obtain delegates to FASM functions.
IntPtr assembleAddress = GetProcAddress(fasmDllHandle, "fasm_Assemble");
IntPtr getVersionAddress = GetProcAddress(fasmDllHandle, "fasm_GetVersion");
_assembleFunction = Marshal.GetDelegateForFunctionPointer <FasmDelegates.fasm_Assemble>(assembleAddress);
_getVersionFunction = Marshal.GetDelegateForFunctionPointer <FasmDelegates.fasm_GetVersion>(getVersionAddress);
}
/// <summary>
/// Creates a new instance of the FASM assembler.
/// </summary>
/// <param name="textSize">
/// The minimum size of the buffer to be used for passing the
/// text to be assembled to FASM Assembler.
/// </param>
/// <param name="resultSize">
/// The minimum size of the buffer to be used for FASM to return the
/// text to be assembled.
/// </param>
public Assembler(int textSize = 0x10000, int resultSize = 0x8000)
{
// Attempt allocation of memory X times.
AllocateText(textSize, 3, _bufferHelper);
AllocateResult(resultSize, 3, _bufferHelper);
IntPtr fasmDllHandle;
// Set functions
if (IntPtr.Size == 4)
{
fasmDllHandle = LoadLibraryW("FASM.dll");
}
else if (IntPtr.Size == 8)
{
fasmDllHandle = LoadLibraryW("FASMX64.dll");
}
else
{
// Does not actually check OS or architecture but it should be good enough for our purposes.
// Users should know that this is a Windows lib for x86/x64
throw new FasmWrapperException("Only 32bit and 64bit desktop architectures are supported (X86 and X86_64).");
}
// Obtain delegates to FASM functions.
IntPtr assembleAddress = GetProcAddress(fasmDllHandle, "fasm_Assemble");
IntPtr getVersionAddress = GetProcAddress(fasmDllHandle, "fasm_GetVersion");
_assembleFunction = Marshal.GetDelegateForFunctionPointer <FasmDelegates.fasm_Assemble>(assembleAddress);
_getVersionFunction = Marshal.GetDelegateForFunctionPointer <FasmDelegates.fasm_GetVersion>(getVersionAddress);
}
