Has anyone a working 64 bit exe built with POASM ?

[hutch--]

I have just downloaded Pelle's latest version and have a very simple example that builds but does not run. The help file is very thin on the ground about building an EXE file with POASM and the only reference I can find to a 64 bit POASM question is the recommendation to use JWASM.

Has anyone succeeded in making a 64 bit EXE with POASM ?

This is the simple test piece.

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    includelib \pasm64\lib64\kernel32.lib
    includelib \pasm64\lib64\user32.lib

    MessageBoxA PROTO :QWORD,:QWORD,:QWORD,:QWORD
    ExitProcess PROTO :QWORD

  .data
  align 16
    tmsg db "MessageBox Text Message",0
  align 16
    titl db "Title",0

  .code

align 16
start:

    xor rax, rax
    invoke MessageBoxA,rax,ADDR tmsg,ADDR titl,rax

    mov rax, rax
    rol rax, 64

    invoke ExitProcess,0

end start

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I have built it with this batch file.

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@echo off

\pasm64\bin\poasm.exe /AAMD64 /V2 /Fllst.txt test.asm
\pasm64\bin\polink.exe /subsystem:WINDOWS /verbose test.obj

pause


Result is a 1.5k file but it does not run.

I have tried both the 64 bit libraries that come with Pelle's C and the VC2010 64 bit libraries but neither is better than the other.

[sinsi]

Looks like you still have to allocate spill space (like ML64), it doesn't happen automatically.

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start:
    sub rsp, 28h

    xor rax, rax
    invoke MessageBoxA,rax,ADDR tmsg,ADDR titl,rax


On entry the stack is unaligned (xxx8) and we need a minimum of 4 qwords for parameters (spill).
Other API functions with more than 4 need more stack space, so you would adjust 28h as needed.

[hutch--]

That did it, works fine. Gratsie !

[TWell]

In PellesC forum was this example too:

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MessageBoxA PROTO :QWORD,:QWORD,:QWORD,:QWORD
MessageBox EQU <MessageBoxA>
ExitProcess PROTO :QWORD
.data
szMsg db 'Hello!',0
szApp db 'MsgBox',0
.code
WinMainCRTStartup proc PARMAREA=4*QWORD
invoke MessageBox,0,ADDR szMsg,ADDR szApp,0
invoke ExitProcess,0
WinMainCRTStartup endp
endand this:

Code Select Expand

.model flat,fastcall
INCLUDELIB kernel32.lib
INCLUDELIB user32.lib

WM_DESTROY    equ 2
WM_CLOSE      equ 10h
WM_INITDIALOG equ 110h

GetModuleHandleW PROTO :QWORD
ExitProcess PROTO :QWORD
DialogBoxIndirectParamW PROTO :QWORD,:QWORD,:QWORD,:QWORD,:QWORD
EndDialog PROTO :QWORD,:QWORD
PostQuitMessage PROTO :QWORD
MessageBoxW PROTO :QWORD,:QWORD,:QWORD,:QWORD
;----------------------
DlgProc PROTO :QWORD,:QWORD,:QWORD,:QWORD
WMInitdialog PROTO :QWORD
WMDestroy    PROTO
WMClose      PROTO :QWORD

.drectve segment
db '/subsystem:windows '
.drectve ends

.data
;align 4
DlgBox  dw  1   ; dlgVer
    dw  0FFFF   ; signature
    dd  0       ; helpID
    dd  0       ; exStyle
    dd  10CA0800h   ; style
    dw  0       ; cDlgItems
    dw  0       ; x
    dw  0       ; y
    dw  200     ; cx
    dw  100     ; cy
    dw  0       ; empty menu
    dw  0       ; empty windowClass
    dw "Test",0    ; title POAsm
    ;dw  'T','e','s','t',0   ; title

sMsg dw  "OK to close",0
;sMsg dw  'O','K',' ','t','o',' ','c','l','o','s','e',0

.code
; parameters RCX, RDX, R8 and R9
start PROC  PARMAREA=5*QWORD
    INVOKE  GetModuleHandleW,0
    mov rcx,rax
    INVOKE  DialogBoxIndirectParamW,rcx,ADDR DlgBox,0,ADDR DlgProc,0
    INVOKE  ExitProcess, rax
start ENDP

DlgProc PROC hWnd:QWORD,uMsg:QWORD,wParam:QWORD,lParam:QWORD PARMAREA=4*QWORD
    ;mov hWnd, rcx  ; ?
    mov QWORD PTR [rsp+30h],rcx
    ;mov uMsg, rdx
    mov DWORD PTR [rsp+38h],edx
    ;mov wParam, r8
    mov QWORD PTR [rsp+40h],r8
    ;mov lParam, r9
    mov QWORD PTR [rsp+48h],r9
    mov     rax,uMsg
    .if uMsg==WM_INITDIALOG
        INVOKE  WMInitdialog, hWnd
    .elseif uMsg==WM_CLOSE
        INVOKE  WMClose, hWnd
    .elseif uMsg==WM_DESTROY
        INVOKE  WMDestroy 
    .else
@@:     xor     rax,rax
    .endif
    ret
DlgProc ENDP

WMInitdialog PROC hWnd:QWORD PARMAREA=4*QWORD
    ;mov    hWnd,rcx
    ;mov     qword ptr [rsp+30h],rcx
    mov     rax,1
    ret
WMInitdialog ENDP

WMDestroy PROC
    INVOKE  PostQuitMessage,0
    mov     rax,1
   ret
WMDestroy ENDP

WMClose PROC hWnd:QWORD PARMAREA=4*QWORD
    ;mov    hWnd,rcx
    mov QWORD PTR [rsp+30h],rcx
    INVOKE  MessageBoxW,hWnd,ADDR sMsg, 0, 21h
    .if rax == 1
        ;mov rcx,hWnd
        mov rcx,QWORD PTR [rsp+30h]
        INVOKE  EndDialog,hWnd,0
    .endif
   ret
WMClose ENDP

END start