/* assembly file for function add3, which adds 3 args on stack
   written directly by Lin Jensen
   to assemble:
   gcc -c add3.s
   the object file is named add3.o
   see also: add3c.s, which is compiled from add3c.c 
   	add3p.s, which also calls printf from assembler 
	add3n.asm -- intel assembler, assembled with nasm
*/
	.global add3
add3:
	movl 4(%esp),%eax	#fetch and add args from stack
	addl 8(%esp),%eax
	addl 12(%esp),%eax
	ret			# return with sum in eax