smediodia
asked on
Stack System (Turbo C memory model : Small)
I try to know the number of arguments i receive in a function. The declaration of this is PCB fork(void (*function)(), ... ) and when im calling it I write running=fork(DrawBox,colou
The probles is about the pointers SP and BP, because when I call the function , the pointer SP moves and I cant know where are the arguments in the stack system.
If i could know the number of arguments im sending, I could move SP to the begging when Im inside the function.
Thank you in advanced... :)
The probles is about the pointers SP and BP, because when I call the function , the pointer SP moves and I cant know where are the arguments in the stack system.
If i could know the number of arguments im sending, I could move SP to the begging when Im inside the function.
Thank you in advanced... :)
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Thats one of the ideas I got, but I cant use it, because I have
the prototype of the function and I cant change it.
Another solution I thought is to add a new global variable which
contains the SP-BP. Thats the number of reserved memory I got in
main() for local variables. Then , when im in the fork() sub sp-2
(oh add sp+2) and I know the BP in main function and then add sp
the value of the global variable i declareted. Then I control the
return address in the stack and I got the arguments.
But , thanks Slarti.
the prototype of the function and I cant change it.
Another solution I thought is to add a new global variable which
contains the SP-BP. Thats the number of reserved memory I got in
main() for local variables. Then , when im in the fork() sub sp-2
(oh add sp+2) and I know the BP in main function and then add sp
the value of the global variable i declareted. Then I control the
return address in the stack and I got the arguments.
But , thanks Slarti.
ASKER