adler32.mid

来自「君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图」· MID 代码 · 共 86 行

	.file	1 "adler32.c"
	.section .mdebug.abi32
	.previous
	.section	.text.av_adler32_update,"ax",@progbits
	.align	2
	.align	5
	.globl	av_adler32_update
	.ent	av_adler32_update
	.type	av_adler32_update, @function
av_adler32_update:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	move	$11,$6
	move	$8,$5
	srl	$10,$4,16
	beq	$6,$0,$L3
	andi	$9,$4,0xffff

$L12:
	sltu	$2,$11,5
	bne	$2,$0,$L5
	nop

$L13:
	bltz	$10,$L5
	nop

	lbu	$2,0($8)
	lbu	$3,1($8)
	addu	$2,$2,$9
	lbu	$4,2($8)
	addu	$3,$2,$3
	lbu	$5,3($8)
	addu	$2,$2,$10
	addu	$4,$3,$4
	addu	$2,$2,$3
	addiu	$11,$11,-4
	addu	$9,$4,$5
	addu	$2,$2,$4
	sltu	$3,$11,5
	addu	$10,$2,$9
	beq	$3,$0,$L13
	addiu	$8,$8,4

$L5:
	lbu	$4,0($8)
	li	$2,-2147024896			# 0xffffffff80070000
	addu	$4,$4,$9
	addu	$7,$4,$10
	ori	$2,$2,0x8071
	multu	$7,$2
	addiu	$11,$11,-1
	mfhi	$3
	multu	$4,$2
	srl	$10,$3,15
	mfhi	$2
	sll	$5,$10,4
	srl	$9,$2,15
	sll	$6,$9,4
	sll	$3,$9,16
	sll	$2,$10,16
	subu	$3,$3,$6
	subu	$2,$2,$5
	addu	$3,$3,$9
	addu	$2,$2,$10
	subu	$9,$4,$3
	beq	$11,$0,$L3
	subu	$10,$7,$2

	j	$L12
	addiu	$8,$8,1

$L3:
	sll	$2,$10,16
	j	$31
	or	$2,$2,$9

	.set	macro
	.set	reorder
	.end	av_adler32_update
	.ident	"GCC: (GNU) 4.1.2"