#include <stdio.h>

void func2(int a, int b, int c){
	printf("%d %d %d\n", a, b, c);
}

void func1(int c){
	func2(1,2,c);
}

int main(void){
	func1(3);

	return 0;
}

-----------

func1 replaced with the following assembly

_func1:
	# use ecx as the base pointer
	movl	%esp, %ecx
	# allocate more stack in 16 byte increments
	subl	$16, %esp
	# copy the return address to top of the stack
	movl	(%ecx), %eax
	movl	%eax, (%esp)
	# copy the old parameter
	movl	4(%ecx), %eax
	movl	%eax, 12(%esp)
	# add the two new ones
	movl	$2, 8(%esp)
	movl	$1, 4(%esp)
	jmp _func2