helloc1.asm

; Console helloworld v 1.0
; Assembler: MASM32
; Compiling: G:\masm32\bin\ml.exe /c /coff helloc1.asm
; Linking: G:\masm32\bin\link.exe helloc1.obj  /SUBSYSTEM:CONSOLE /LIBPATH:G:\masm32\lib\

.386
.model flat

extern  _ExitProcess@4:near
extern  _GetStdHandle@4:near
extern  _WriteConsoleA@20:near

includelib kernel32.lib

.data
    message db  'Hello, world!',0Dh,0Ah
    handle  dd  ?
    written dd  ?

    STD_INPUT_HANDLE    equ -10
    STD_OUTPUT_HANDLE   equ -11
    STD_ERROR_HANDLE    equ -12

.code
_main:
    ;get StdOut handle
    push    STD_OUTPUT_HANDLE
    call    _GetStdHandle@4
    cmp     eax,0
    jle     exiterr             ; exit if error in GetStdHandle (return -1) or no console (return 0)
    mov     handle, eax

    push    0                   ;reserved
    push    offset written      ;number of chars written
    push    15                  ;number of chars to write
    push    offset message      ;output string
    push    handle              ;handle StdOutput
    call    _WriteConsoleA@20
    jmp     exit

exiterr:
    push    1
    call    _ExitProcess@4

exit:
    push    0
    call    _ExitProcess@4
end _main