Exciting new feature: Emit()

[fafalone]

Thought this new feature worth highlighting for those that don't follow tB Discord or language design forum regularly.

twinBASIC now supports Naked functions and Emit(), which emits assembly code directly into the compiled exe.

For example, the current InterlockedIncrement intrinsic from my WinDevLib project, currently linked in as a static library (since it's not exported from 64bit kernel32.dll).

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

For more info and examples, see the recent comments to this post: https://github.com/twinbasic/lang-design/issues/65

[fafalone]

There's now also EmitAny() to use on other size data types (Integer, Long, and LongLong), and StackOffset() to get the stack offset of parameters and local variables.