loop.s

自己写的c语言版的软件实现cpu的pipeline功能的程序。对于学习体系结构的同仁有好处。

	.global __start
__start:
        li      $sp,0x7fff0000  # initialize stack pointer
        move    $fp,$sp         # and frame pointer
        sw      $0,16($fp)
        li      $6,0
$L1:
        lw      $2,16($fp)      # loop head
        slt     $3,$2,10
        bne     $3,$0,$L2
        j       $L3
$L2:
        move    $4,$2           # loop body
        sll     $5,$4,2
        subu    $4,$5,13
        add     $6,$6,$4
        lw      $3,16($fp)
        addu    $2,$3,1
        move    $3,$2
        sw      $3,16($fp)
        j       $L1
$L3:
        li      $2,1            # end the program
        syscall