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when and where to create stack
Posted: Tue Jun 10, 2003 11:00 pm
by akash
I am trying to develope small os.
i can load my kernel.
i can print single characters with 10h.
but when i call function and pass pointers for printing string
it is not working.
please help
RE:when and where to create stack
Posted: Tue Jun 10, 2003 11:00 pm
by Adek336
hm another stack question
anyways, how bad does it do? is it possible to call a function and get back from it? perhaps you've got to set up [org] correctly, and test if DS is correct (I think for you it is DS = CS). You say it is a small kernel, can you post it?
Adrian
RE:when and where to create stack
Posted: Fri Jun 13, 2003 11:00 pm
by akash
Thank you Adek336 for your help.
I got it solved by foll code
before my main in kernel.
If you feel stack is less or can create problems
please let me know
[BITS 16]
group DGROUP _TEXT _DATA _BSS _STACK
extern _main
; ****************************CODE-Segment*********************************
segment _TEXT class=CODE
..start:
main: mov ax, cs
mov ds, ax
mov es, ax
cli
mov ss, ax
mov sp, StackEnd
sti
call _main
.hang: jmp .hang
; ****************************DATA-Segment*********************************
segment _DATA class=DATA
; ****************************BSS-Segment**********************************
segment _BSS class=BSS
; ****************************STACK-Segment********************************
segment _STACK class=STACK
resw 256
StackEnd: