/*
 * By  Ronald E. Jacobs.
 * For Allen Holub's C for Professionals class.
 *     October 22, 1990.
 *     Homework 5.
 * File name: framesize(x).
 * What it does: Returns the size of its own stack frame in bytes.
 * How it does it: Assumes that the size of the stack frame is the same as
 * 	the number of bytes from a local variable in the stack frame to the
 *	same local variable in an identical contiguous stack frame.  To get
 *	identical contiguous stack frames, framesize() calls itself.  A type
 *	char variable is used so that the difference between the local 
 *	variable in the two stack frames will be measured in bytes.
 */

#include <stdio.h>

main()
{
        printf("The stack frame length of framesize() is ");
	printf("%d bytes\n", framesize(0));
        return;
}


/*--------------------------------------------------------------------*/

#include "types.h"

framesize(mark)
paddr_t mark;			/* Caller must pass mark=0 */

{
	return(mark ? (mark - (paddr_t)&mark) : (framesize(&mark))); 
}