Emit() and Naked Functions

Raw bytecode can be inserted into a binary with tB's Emit() function. To support this, functions can be marked as Naked to remove hidden tB code.

Example

For example, the following is an implementation of the InterlockedIncrement compiler intrinsic that replaces the API in Microsoft C/C++ (adds one to Addend and returns the result, as an atomic operation which isn't guaranteed with regular code):

Public Function InlineInterlockedIncrement CDecl Naked(Addend As Long) As Long
    #If Win64 Then
        Emit(&Hb8, &H01, &H00, &H00, &H00) ' mov    eax,0x1
        Emit(&Hf0, &H0f, &Hc1, &H41, &H00) ' lock xadd DWORD PTR [rcx+0x4],eax
        Emit(&Hff, &Hc0)                   ' inc    eax
        Emit(&Hc3)                         ' ret
    #Else
        Emit(&H8b, &H4c, &H24, &H04)       ' mov     ecx, DWORD PTR _Addend$[esp-4]
        Emit(&Hb8, &H01, &H00, &H00, &H00) ' mov     eax, 1
        Emit(&Hf0, &H0f, &Hc1, &H01)       ' lock xadd DWORD PTR [ecx], eax
        Emit(&H40)                         ' inc     eax
        Emit(&Hc3)                         ' ret     0
    #End If
End Function

(Note: The CDecl calling convention is optional; you can write x86 assembly using _stdcall and simply omit the notation.)