base64.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 298 行

	.file	1 "base64.c"
	.section .mdebug.abi32
	.previous
	.section	.text.av_base64_decode,"ax",@progbits
	.align	2
	.align	5
	.globl	av_base64_decode
	.ent	av_base64_decode
	.type	av_base64_decode, @function
av_base64_decode:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	lb	$3,0($5)
	beq	$3,$0,$L2
	move	$12,$4

	li	$2,61			# 0x3d
	beq	$3,$2,$L2
	addiu	$3,$3,-43

	sltu	$2,$3,80
	beq	$2,$0,$L5
	nop

	lui	$2,%hi(map2)
	addiu	$4,$2,%lo(map2)
	addu	$3,$3,$4
	lbu	$7,0($3)
	li	$2,255			# 0xff
	beq	$7,$2,$L5
	move	$15,$4

	move	$10,$0
	move	$4,$12
	move	$11,$0
	li	$24,6			# 0x6
	li	$13,61			# 0x3d
	j	$L8
	li	$14,255			# 0xff

$L21:
	beq	$7,$13,$L19
	nop

	beq	$2,$0,$L5
	nop

	lbu	$7,0($3)
	beq	$7,$14,$L5
	nop

$L8:
	subu	$2,$4,$12
	sll	$3,$11,6
	slt	$9,$2,$6
	andi	$2,$10,0x3
	addiu	$10,$10,1
	addu	$8,$5,$10
	beq	$2,$0,$L11
	addu	$11,$3,$7

	sll	$2,$2,1
	subu	$2,$24,$2
	beq	$9,$0,$L11
	sra	$2,$11,$2

	sb	$2,0($4)
	addiu	$4,$4,1
$L11:
	lb	$7,0($8)
	addiu	$2,$7,-43
	addu	$3,$2,$15
	bne	$7,$0,$L21
	sltu	$2,$2,80

$L19:
	j	$31
	subu	$2,$4,$12

$L5:
	j	$31
	li	$2,-1			# 0xffffffffffffffff

$L2:
	j	$31
	move	$2,$0

	.set	macro
	.set	reorder
	.end	av_base64_decode
	.section	.text.av_base64_encode,"ax",@progbits
	.align	2
	.align	5
	.globl	av_base64_encode
	.ent	av_base64_encode
	.type	av_base64_encode, @function
av_base64_encode:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	li	$2,1073676288			# 0x3fff0000
	ori	$2,$2,0xfffe
	sltu	$2,$2,$7
	beq	$2,$0,$L49
	move	$10,$4

$L23:
	j	$31
	move	$2,$0

$L49:
	li	$2,1431633920			# 0x55550000
	sll	$3,$7,2
	ori	$2,$2,0x5556
	mult	$3,$2
	sra	$3,$3,31
	mfhi	$2
	subu	$2,$2,$3
	addiu	$2,$2,12
	slt	$2,$5,$2
	bne	$2,$0,$L23
	nop

	beq	$7,$0,$L50
	move	$5,$4

	lui	$2,%hi(b64.3707)
	addiu	$12,$2,%lo(b64.3707)
	move	$8,$0
	move	$4,$0
	move	$11,$12
	lbu	$3,0($6)
$L52:
	sll	$2,$4,8
	addu	$4,$2,$3
	addiu	$7,$7,-1
	addiu	$6,$6,1
	addiu	$8,$8,8
	bne	$7,$0,$L41
	sll	$9,$4,6

	move	$6,$11
$L48:
	srl	$2,$9,$8
$L53:
	andi	$2,$2,0x3f
	addu	$2,$2,$6
	addiu	$8,$8,-6
	lbu	$3,0($2)
	slt	$4,$8,7
	sb	$3,0($5)
	beq	$4,$0,$L48
	addiu	$5,$5,1

	bgtz	$8,$L53
	srl	$2,$9,$8

	subu	$3,$5,$10
	andi	$2,$3,0x3
	beq	$2,$0,$L54
	move	$2,$10

	addiu	$4,$3,1
$L34:
	andi	$3,$4,0x3
	li	$2,61
	sb	$2,0($5)
	addiu	$4,$4,1
	bne	$3,$0,$L34
	addiu	$5,$5,1

	j	$L51
	move	$2,$10

$L50:
	move	$2,$10
$L51:
$L54:
	j	$31
	sb	$0,0($5)

$L41:
	srl	$2,$9,$8
	andi	$2,$2,0x3f
	addu	$2,$2,$12
	lbu	$3,0($2)
	addiu	$8,$8,-6
	slt	$2,$8,7
	sb	$3,0($5)
	beq	$2,$0,$L41
	addiu	$5,$5,1

	j	$L52
	lbu	$3,0($6)

	.set	macro
	.set	reorder
	.end	av_base64_encode
	.rdata
	.align	2
	.type	b64.3707, @object
	.size	b64.3707, 65
b64.3707:
	.ascii	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123"
	.ascii	"456789+/\000"
	.align	2
	.type	map2, @object
	.size	map2, 80
map2:
	.byte	62
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	63
	.byte	52
	.byte	53
	.byte	54
	.byte	55
	.byte	56
	.byte	57
	.byte	58
	.byte	59
	.byte	60
	.byte	61
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	0
	.byte	1
	.byte	2
	.byte	3
	.byte	4
	.byte	5
	.byte	6
	.byte	7
	.byte	8
	.byte	9
	.byte	10
	.byte	11
	.byte	12
	.byte	13
	.byte	14
	.byte	15
	.byte	16
	.byte	17
	.byte	18
	.byte	19
	.byte	20
	.byte	21
	.byte	22
	.byte	23
	.byte	24
	.byte	25
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	-1
	.byte	26
	.byte	27
	.byte	28
	.byte	29
	.byte	30
	.byte	31
	.byte	32
	.byte	33
	.byte	34
	.byte	35
	.byte	36
	.byte	37
	.byte	38
	.byte	39
	.byte	40
	.byte	41
	.byte	42
	.byte	43
	.byte	44
	.byte	45
	.byte	46
	.byte	47
	.byte	48
	.byte	49
	.byte	50
	.byte	51
	.ident	"GCC: (GNU) 4.1.2"