复旦大学计算机体系结构期末考试B卷(共13页).doc

精选优质文档-倾情为你奉上（1）考虑下面这个for循环的汇编代码looper:pushl%ebpmovl%esp, %ebpsubl$16, %espmovl$0, -8(%ebp)movl$0, -4(%ebp)jmp.L2.L4:movl-4(%ebp), %eaxsall$2, %eaxaddl12(%ebp), %eaxmovl(%eax), %eaxcmpl-8(%ebp), %eaxjle.L3movl-4(%ebp), %eaxsall$2, %eaxaddl12(%ebp), %eaxmovl(%eax), %eaxmovl%eax, -8(%ebp).L3:addl$1, -8(%ebp)addl$2, -4(%ebp).L2:movl-4(%ebp), %eaxcmpl8(%ebp), %eaxjl.L4movl-8(%ebp), %eaxleave