[Nasm-users] calling 'C' functions

[zak100 <zul...@ya...>]

Hi,
I am trying to call 'C" functions from my tiny kernel code. Can somebody plz
help me with this?
; call c function
extern [_K_main]
;--- test kernel.bin---

;    push cs
;    push cs
;    pop ds
;    pop es
    mov ax, 7E0H
    mov ds,ax
    mov es,ax
    mov si, msg

    mov ah, 0Eh
    mov bx, 7
top:
    lodsb
    cmp al, 0
    jz blackhole
    int 10h
    jmp short top

blackhole:
    
    mov cx,1000
    Delay: Loop Delay
    call _K_main; this is in main.c
    hlt
    jmp blackhole

msg db 'Welcome to the Kernel!', 0

times 0x200-($-$$) db 0
        

I am getting following error mesg:
D:\nasm prog>nasm -f bin -o boot.bin test_kernel2.asm
test_kernel2.asm:5: error: label or instruction expected at start of line

D:\NASMPR~1>


Zulfi.


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