crc.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 222 行

	.file	1 "crc.c"
	.section .mdebug.abi32
	.previous
	.section	.text.av_crc_init,"ax",@progbits
	.align	2
	.align	5
	.globl	av_crc_init
	.ent	av_crc_init
	.type	av_crc_init, @function
av_crc_init:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$2,$6,-8
	sltu	$2,$2,25
	move	$14,$4
	move	$11,$5
	bne	$2,$0,$L18
	lw	$10,16($sp)

	li	$3,-1			# 0xffffffffffffffff
$L13:
$L24:
	j	$31
	move	$2,$3

$L18:
	li	$3,1			# 0x1
	andi	$2,$6,0x20
	sll	$4,$3,$6
	move	$5,$0
	movn	$5,$4,$2
	move	$9,$0
	movn	$4,$0,$2
	slt	$2,$9,$5
	bne	$2,$0,$L23
	li	$2,1028			# 0x404

	bne	$9,$5,$L24
	li	$3,-1			# 0xffffffffffffffff

	sltu	$2,$7,$4
	beq	$2,$0,$L24
	nop

	li	$2,1028			# 0x404
$L23:
	bne	$10,$2,$L19
	subu	$2,$0,$6

$L22:
	sll	$8,$7,$2
	li	$3,-16777216			# 0xffffffffff000000
	li	$2,16711680			# 0xff0000
	ori	$12,$3,0xff00
	ori	$13,$2,0xff
	move	$10,$14
	j	$L8
	move	$9,$0

$L21:
	sw	$3,0($10)
$L11:
	addiu	$9,$9,1
	li	$2,256			# 0x100
	beq	$9,$2,$L20
	addiu	$10,$10,4

$L8:
	andi	$2,$9,0x1
	subu	$2,$0,$2
	and	$2,$7,$2
	srl	$3,$9,1
	sll	$4,$9,24
	xor	$3,$3,$2
	sra	$4,$4,31
	andi	$6,$3,0x1
	and	$4,$8,$4
	sll	$2,$9,25
	xor	$2,$2,$4
	subu	$6,$0,$6
	and	$6,$7,$6
	sra	$5,$2,31
	srl	$3,$3,1
	xor	$3,$3,$6
	and	$5,$8,$5
	sll	$2,$2,1
	xor	$2,$2,$5
	andi	$4,$3,0x1
	sra	$6,$2,31
	subu	$4,$0,$4
	and	$4,$7,$4
	and	$6,$8,$6
	srl	$3,$3,1
	sll	$2,$2,1
	xor	$3,$3,$4
	xor	$2,$2,$6
	andi	$5,$3,0x1
	sra	$4,$2,31
	and	$4,$8,$4
	subu	$5,$0,$5
	sll	$2,$2,1
	xor	$2,$2,$4
	and	$5,$7,$5
	srl	$3,$3,1
	xor	$3,$3,$5
	sra	$4,$2,31
	andi	$6,$3,0x1
	and	$4,$8,$4
	sll	$2,$2,1
	xor	$2,$2,$4
	subu	$6,$0,$6
	and	$6,$7,$6
	sra	$5,$2,31
	srl	$3,$3,1
	xor	$3,$3,$6
	and	$5,$8,$5
	sll	$2,$2,1
	xor	$2,$2,$5
	andi	$4,$3,0x1
	sra	$6,$2,31
	subu	$4,$0,$4
	and	$4,$7,$4
	and	$6,$8,$6
	srl	$3,$3,1
	sll	$2,$2,1
	xor	$3,$3,$4
	xor	$2,$2,$6
	andi	$5,$3,0x1
	sra	$4,$2,31
	and	$4,$8,$4
	subu	$5,$0,$5
	sll	$2,$2,1
	xor	$2,$2,$4
	and	$5,$7,$5
	srl	$3,$3,1
	xor	$3,$3,$5
	srl	$4,$2,8
	sll	$2,$2,8
	andi	$5,$3,0x1
	and	$4,$4,$13
	and	$2,$2,$12
	or	$2,$2,$4
	subu	$5,$0,$5
	sll	$4,$2,16
	and	$5,$7,$5
	srl	$3,$3,1
	srl	$2,$2,16
	xor	$3,$3,$5
	bne	$11,$0,$L21
	or	$2,$2,$4

	j	$L11
	sw	$2,0($10)

$L20:
	li	$2,1			# 0x1
	move	$3,$0
	j	$L13
	sw	$2,1024($14)

$L19:
	li	$2,4096			# 0x1000
	bne	$10,$2,$L24
	li	$3,-1			# 0xffffffffffffffff

	j	$L22
	subu	$2,$0,$6

	.set	macro
	.set	reorder
	.end	av_crc_init
	.section	.text.av_crc,"ax",@progbits
	.align	2
	.align	5
	.globl	av_crc
	.ent	av_crc
	.type	av_crc, @function
av_crc:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addu	$7,$7,$6
	sltu	$2,$6,$7
	beq	$2,$0,$L26
	move	$8,$4

$L28:
	lbu	$2,0($6)
	srl	$4,$5,8
	xor	$2,$5,$2
	andi	$2,$2,0x00ff
	sll	$2,$2,2
	addu	$2,$2,$8
	lw	$3,0($2)
	addiu	$6,$6,1
	bne	$6,$7,$L28
	xor	$5,$4,$3

$L26:
	j	$31
	move	$2,$5

	.set	macro
	.set	reorder
	.end	av_crc

	.comm	av_crcEDB88320,4,4

	.comm	av_crc04C11DB7,4,4

	.comm	av_crc8005,4,4

	.comm	av_crc07,4,4
	.ident	"GCC: (GNU) 4.1.2"