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PUTN.ASM
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Assembly Source File
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1993-01-04
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763b
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41 lines
; allows C program to call cputs with multiple arguments.
; E.g. putn("How ", "are ", "you?", 0);
; the last argument must be either 0 or ""
_text segment public byte 'code'
assume cs:_text
extrn _cputs:near
public _putn
_putn proc near
push si
push di
push bp
mov bp,sp
mov si,8
loop:
mov di,[bp+si] ; get next string
or di,di ; is it NULL
je done ; if so, nothing more to print
or byte ptr [di],0 ; it is "" (null string)
je done ; if so, nothing more to print
; now call cputs to print the string
push di ; push parameter on stack
call _cputs
pop di ; get rid of parameter on stack
add si,2 ; point to next parameter
jmp loop
done:
pop bp
pop di
pop si
ret
_putn endp
_text ends
end