layer3.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 4,580 行 · 第 1/5 页

	sw	$10,212($sp)
	sll	$2,$2,4
	lw	$10,308($sp)
	li	$12,163381248			# 0x9bd0000
	li	$13,212926464			# 0xcb10000
	ori	$12,$12,0x7ca0
	ori	$13,$13,0x9346
	lw	$4,32($sp)
	lw	$5,56($sp)
	sw	$2,332($sp)
	mflo	$7
	srl	$11,$11,28
#APP
	mult	$4,$13
#NO_APP
	mfhi	$21
	mflo	$4
#APP
	mult	$5,$12
#NO_APP
	mfhi	$2
	or	$11,$10,$11
	lw	$17,292($sp)
	lw	$23,296($sp)
	sw	$11,312($sp)
	sll	$2,$2,4
	lw	$11,316($sp)
	lw	$3,104($sp)
	sw	$2,340($sp)
	mflo	$5
	lw	$2,80($sp)
	srl	$14,$14,28
#APP
	mult	$2,$13
#NO_APP
	srl	$15,$15,28
	mfhi	$20
	mflo	$2
	srl	$8,$8,28
#APP
	mult	$3,$12
#NO_APP
	mfhi	$16
	or	$14,$17,$14
	or	$15,$23,$15
	or	$8,$11,$8
	sw	$14,216($sp)
	sw	$15,300($sp)
	sll	$fp,$16,4
	sw	$8,208($sp)
	lw	$16,328($sp)
	lw	$17,332($sp)
	lw	$14,320($sp)
	srl	$2,$2,28
	srl	$6,$6,28
	srl	$7,$7,28
	sll	$20,$20,4
	lw	$23,340($sp)
	or	$6,$16,$6
	or	$7,$17,$7
	mflo	$3
	or	$20,$20,$2
	srl	$9,$9,28
	li	$2,266076160			# 0xfdc0000
	sw	$6,204($sp)
	sw	$7,336($sp)
	lw	$6,0($sp)
	lw	$7,120($sp)
#APP
	mult	$6,$19
#NO_APP
	or	$9,$14,$9
	srl	$4,$4,28
	mfhi	$14
	mflo	$6
	ori	$2,$2,0xf549
	sll	$21,$21,4
#APP
	mult	$7,$2
#NO_APP
	srl	$5,$5,28
	li	$2,102694912			# 0x61f0000
	or	$5,$23,$5
	srl	$3,$3,28
	or	$21,$21,$4
	mfhi	$15
	lw	$4,4($sp)
	mflo	$7
	ori	$2,$2,0x78aa
#APP
	mult	$4,$2
#NO_APP
	li	$2,247988224			# 0xec80000
	sw	$9,324($sp)
	sw	$5,344($sp)
	or	$fp,$fp,$3
	lw	$5,124($sp)
	lw	$3,128($sp)
	mfhi	$10
	mflo	$4
	ori	$2,$2,0x35e8
#APP
	mult	$5,$2
#NO_APP
	lw	$2,8($sp)
	mfhi	$11
	mflo	$5
#APP
	mult	$2,$12
#NO_APP
	mfhi	$8
	mflo	$2
#APP
	mult	$3,$13
#NO_APP
	mfhi	$9
	mflo	$3
	lw	$16,216($sp)
	lw	$17,300($sp)
	lw	$23,212($sp)
	lw	$24,312($sp)
	sw	$fp,348($sp)
	srl	$6,$6,28
	srl	$7,$7,28
	srl	$2,$2,28
	srl	$3,$3,28
	sll	$14,$14,4
	sll	$15,$15,4
	sll	$8,$8,4
	sll	$9,$9,4
	addu	$fp,$23,$24
	or	$14,$14,$6
	lw	$23,336($sp)
	addu	$6,$16,$17
	lw	$24,344($sp)
	lw	$16,324($sp)
	lw	$17,204($sp)
	or	$15,$15,$7
	or	$8,$8,$2
	lw	$7,208($sp)
	lw	$2,348($sp)
	or	$9,$9,$3
	lw	$3,556($sp)
	srl	$4,$4,28
	srl	$5,$5,28
	sll	$10,$10,4
	sll	$11,$11,4
	or	$10,$10,$4
	or	$11,$11,$5
	addu	$4,$7,$16
	addiu	$5,$3,8
	addu	$7,$17,$23
	addu	$21,$21,$24
	addu	$20,$20,$2
	addiu	$2,$3,4
	sw	$5,160($sp)
	sw	$14,24($3)
	sw	$6,48($3)
	sw	$fp,72($3)
	sw	$15,96($3)
	sw	$0,0($3)
	sw	$0,120($3)
	sw	$0,4($3)
	sw	$10,24($2)
	sw	$4,48($2)
	sw	$7,72($2)
	sw	$11,96($2)
	sw	$0,120($2)
	sw	$0,8($3)
	sw	$21,48($5)
	sw	$20,72($5)
	sw	$8,24($5)
	sw	$9,96($5)
	lw	$14,36($sp)
#APP
	mult	$14,$12
#NO_APP
	mfhi	$2
	lw	$15,60($sp)
	sw	$2,168($sp)
	sll	$3,$2,4
	mflo	$14
#APP
	mult	$15,$13
#NO_APP
	mfhi	$2
	lw	$11,108($sp)
	sll	$2,$2,4
	sw	$2,356($sp)
	mflo	$15
#APP
	mult	$11,$13
#NO_APP
	mfhi	$2
	lw	$10,84($sp)
	sll	$2,$2,4
	sw	$2,368($sp)
	mflo	$11
#APP
	mult	$10,$12
#NO_APP
	mfhi	$2
	sw	$3,352($sp)
	sw	$2,180($sp)
	sll	$3,$2,4
	li	$2,102694912			# 0x61f0000
	lw	$8,40($sp)
	mflo	$10
	ori	$2,$2,0x78aa
#APP
	mult	$8,$2
#NO_APP
	mfhi	$2
	sw	$3,364($sp)
	sll	$3,$2,4
	sw	$3,372($sp)
	li	$3,247988224			# 0xec80000
	lw	$9,64($sp)
	sw	$2,164($sp)
	ori	$3,$3,0x35e8
	mflo	$8
#APP
	mult	$9,$3
#NO_APP
	mfhi	$2
	lw	$7,112($sp)
	sll	$2,$2,4
	sw	$2,376($sp)
	mflo	$9
#APP
	mult	$7,$3
#NO_APP
	mfhi	$2
	lw	$6,88($sp)
	sll	$2,$2,4
	sw	$2,384($sp)
	li	$2,102694912			# 0x61f0000
	lw	$4,44($sp)
	mflo	$7
	ori	$2,$2,0x78aa
#APP
	mult	$6,$2
#NO_APP
	mfhi	$21
	mflo	$6
#APP
	mult	$4,$19
#NO_APP
	mfhi	$2
	li	$16,266076160			# 0xfdc0000
	sll	$3,$2,4
	sw	$3,388($sp)
	li	$3,266076160			# 0xfdc0000
	lw	$5,68($sp)
	sw	$2,272($sp)
	mflo	$4
	ori	$3,$3,0xf549
	ori	$16,$16,0xf549
#APP
	mult	$5,$3
#NO_APP
	lw	$3,116($sp)
	mfhi	$2
	mflo	$5
#APP
	mult	$3,$16
#NO_APP
	lw	$16,352($sp)
	srl	$14,$14,28
	or	$14,$16,$14
	sll	$2,$2,4
	sw	$2,392($sp)
	mfhi	$20
	lw	$2,92($sp)
	sw	$14,200($sp)
	lw	$23,364($sp)
	lw	$17,356($sp)
	srl	$10,$10,28
	lw	$24,368($sp)
	or	$10,$23,$10
	mflo	$3
	sll	$fp,$20,4
#APP
	mult	$2,$19
#NO_APP
	srl	$15,$15,28
	mfhi	$20
	mflo	$2
	sw	$10,196($sp)
	lw	$23,392($sp)
	lw	$10,372($sp)
	or	$15,$17,$15
	srl	$11,$11,28
	lw	$17,388($sp)
	or	$14,$24,$11
	srl	$2,$2,28
	lw	$11,376($sp)
	srl	$8,$8,28
	srl	$4,$4,28
	srl	$5,$5,28
	sll	$20,$20,4
	lw	$16,384($sp)
	or	$8,$10,$8
	or	$4,$17,$4
	or	$5,$23,$5
	srl	$6,$6,28
	or	$20,$20,$2
	srl	$9,$9,28
	sll	$21,$21,4
	li	$2,102694912			# 0x61f0000
	sw	$8,192($sp)
	sw	$4,288($sp)
	sw	$5,396($sp)
	lw	$4,136($sp)
	lw	$5,12($sp)
	or	$9,$11,$9
	srl	$7,$7,28
	srl	$3,$3,28
	or	$21,$21,$6
	ori	$2,$2,0x78aa
	lw	$6,132($sp)
#APP
	mult	$6,$12
#NO_APP
	li	$12,266076160			# 0xfdc0000
	mfhi	$11
	mflo	$6
#APP
	mult	$5,$13
#NO_APP
	mfhi	$8
	mflo	$5
#APP
	mult	$4,$2
#NO_APP
	li	$2,247988224			# 0xec80000
	sw	$15,360($sp)
	sw	$9,380($sp)
	or	$15,$16,$7
	or	$fp,$fp,$3
	mfhi	$10
	lw	$3,16($sp)
	mflo	$4
	ori	$2,$2,0x35e8
	ori	$12,$12,0xf549
#APP
	mult	$3,$2
#NO_APP
	lw	$2,20($sp)
	mfhi	$7
	mflo	$3
#APP
	mult	$2,$12
#NO_APP
	mfhi	$9
	mflo	$2
	lw	$13,200($sp)
	lw	$16,360($sp)
	lw	$17,196($sp)
	srl	$4,$4,28
	srl	$3,$3,28
	srl	$2,$2,28
	sll	$10,$10,4
	sll	$7,$7,4
	sll	$9,$9,4
	lw	$23,192($sp)
	lw	$24,380($sp)
	srl	$5,$5,28
	or	$7,$7,$3
	or	$10,$10,$4
	lw	$3,396($sp)
	lw	$4,556($sp)
	or	$9,$9,$2
	sll	$8,$8,4
	lw	$2,288($sp)
	addu	$12,$17,$14
	srl	$6,$6,28
	lw	$14,160($sp)
	or	$8,$8,$5
	sll	$11,$11,4
	addu	$5,$13,$16
	lw	$16,556($sp)
	addu	$13,$2,$3
	addu	$20,$20,$fp
	addiu	$2,$4,12
	addiu	$3,$4,16
	or	$11,$11,$6
	addiu	$4,$4,20
	addu	$6,$23,$24
	addu	$21,$21,$15
	sw	$0,120($14)
	sw	$0,12($16)
	sw	$8,24($2)
	sw	$5,48($2)
	sw	$12,72($2)
	sw	$11,96($2)
	sw	$0,120($2)
	sw	$0,16($16)
	sw	$7,24($3)
	sw	$6,48($3)
	sw	$21,72($3)
	sw	$10,96($3)
	sw	$0,120($3)
	sw	$0,20($16)
	sw	$9,24($4)
	sw	$13,48($4)
	sw	$20,72($4)
	lw	$2,140($sp)
#APP
	mult	$2,$19
#NO_APP
	mfhi	$3
	mflo	$2
	sll	$3,$3,4
	srl	$2,$2,28
	or	$3,$3,$2
	sw	$3,96($4)
	sw	$0,120($4)
	lw	$fp,544($sp)
	lw	$23,540($sp)
	lw	$22,536($sp)
	lw	$21,532($sp)
	lw	$20,528($sp)
	lw	$19,524($sp)
	lw	$18,520($sp)
	lw	$17,516($sp)
	lw	$16,512($sp)
	.set	noreorder
	.set	nomacro
	j	$31
	addiu	$sp,$sp,552
	.set	macro
	.set	reorder

	.end	III_imdct_s
	.section	.rodata.str1.4,"aMS",@progbits,1
	.align	2
$LC0:
	.ascii	"-bits_left <= 8 * 8\000"
	.align	2
$LC1:
	.ascii	"libmad-0.15.1b/layer3.c\000"
	.section	.rodata.cst4,"aM",@progbits,4
	.align	2
$LC2:
	.word	-1431655765
	.section	.text.III_decode,"ax",@progbits
	.align	2
	.align	5
	.ent	III_decode
	.type	III_decode, @function
III_decode:
	.frame	$sp,8176,$31		# vars= 8120, regs= 10/0, args= 16, gp= 0
	.mask	0xc0ff0000,-4
	.fmask	0x00000000,0
	addiu	$sp,$sp,-8176
	sw	$31,8172($sp)
	sw	$fp,8168($sp)
	sw	$23,8164($sp)
	sw	$22,8160($sp)
	sw	$21,8156($sp)
	sw	$20,8152($sp)
	sw	$19,8148($sp)
	sw	$18,8144($sp)
	sw	$17,8140($sp)
	sw	$16,8136($sp)
	sw	$5,8180($sp)
	lw	$5,28($5)
	lw	$3,8180($sp)
	sw	$7,8188($sp)
	andi	$2,$5,0x4000
	sw	$4,8176($sp)
	sw	$6,8184($sp)
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L19
	lw	$4,20($3)
	.set	macro
	.set	reorder

	sll	$3,$4,1
	srl	$2,$3,7
	andi	$2,$2,0xf
	srl	$3,$3,15
	andi	$3,$3,0x1
	addiu	$2,$2,-5
	addu	$3,$3,$2
	sw	$3,7624($sp)
$L21:
	andi	$2,$5,0x1000
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L22
	li	$5,2			# 0x2
	.set	macro
	.set	reorder

	li	$4,1			# 0x1
	sw	$4,7620($sp)
$L24:
	lw	$6,7624($sp)
	lw	$7,8184($sp)
	sll	$6,$6,4
	addiu	$7,$7,10
	sw	$0,7616($sp)
	sw	$0,7504($sp)
	sw	$6,8096($sp)
	sw	$7,8100($sp)
$L25:
	lw	$8,8188($sp)
	.set	noreorder
	.set	nomacro
	beq	$8,$0,$L26
	lw	$9,7624($sp)
	.set	macro
	.set	reorder

	lw	$10,8096($sp)
	sll	$9,$9,2
	lui	$11,%hi(sfbwidth_table)
	addiu	$3,$11,%lo(sfbwidth_table)
	subu	$2,$10,$9
	addu	$2,$2,$3
	sw	$0,7432($sp)
	lw	$2,0($2)
	lw	$14,7432($sp)
	sw	$2,7628($sp)
	move	$22,$2
	sll	$3,$14,5
	sll	$2,$14,2
	subu	$3,$3,$2
	addu	$3,$3,$14
	lw	$18,8100($sp)
	sll	$3,$3,1
	addiu	$12,$sp,16
	addu	$3,$18,$3
	addiu	$13,$sp,5124
	sw	$9,8084($sp)
	sw	$12,7516($sp)
	sw	$13,7512($sp)
	sw	$0,7508($sp)
	sw	$3,7608($sp)
	lbu	$2,9($3)
	move	$21,$12
	li	$23,2			# 0x2
	.set	noreorder
	.set	nomacro
	beq	$2,$23,$L574
	sw	$22,0($21)
	.set	macro
	.set	reorder

$L29:
	lw	$9,8180($sp)
	lw	$2,28($9)
	andi	$2,$2,0x1000
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L639
	lw	$8,7616($sp)
	.set	macro
	.set	reorder

	lw	$10,7432($sp)
$L647:
	.set	noreorder
	.set	nomacro
	bne	$10,$0,$L36
	lw	$12,8176($sp)
	.set	macro
	.set	reorder

	lw	$13,7608($sp)
	lw	$2,0($12)
	lw	$3,4($12)
	lbu	$4,9($13)
	lw	$14,8180($sp)
	sw	$2,24($sp)
	sw	$3,28($sp)
	li	$18,2			# 0x2
	move	$fp,$0
	lw	$5,8($14)
	.set	noreorder
	.set	nomacro
	beq	$4,$18,$L39
	lhu	$6,6($13)
	.set	macro
	.set	reorder

$L623:
	move	$7,$0
$L41:
	andi	$2,$5,0x1
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L640
	sltu	$2,$6,400
	.set	macro
	.set	reorder

	.set	noreorder
	.set	nomacro
	beq	$fp,$0,$L640
	srl	$5,$6,1
	.set	macro
	.set	reorder

	sltu	$2,$5,180
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L60
	sltu	$2,$5,244
	.set	macro
	.set	reorder

	li	$2,954400768			# 0x38e30000
	ori	$2,$2,0x8e39
	multu	$5,$2
	lui	$3,%hi(nsfb_table+36)
	mfhi	$2
	addiu	$3,$3,%lo(nsfb_table+36)
	srl	$2,$2,3
	sll	$4,$2,5
	addu	$6,$7,$3
	sll	$3,$2,2
	addu	$3,$3,$4
	li	$4,-1431699456			# 0xffffffffaaaa0000
	subu	$3,$5,$3
	ori	$4,$4,0xaaab
	multu	$3,$4
	sw	$2,56($sp)
	mfhi	$5
	sw	$0,68($sp)
	srl	$5,$5,2
	sll	$2,$5,3
	sll	$4,$5,1
	subu	$2,$2,$4
	subu	$3,$3,$2
	sw	$3,64($sp)
	sw	$5,60($sp)
$L62:
	addiu	$4,$sp,72
	move	$19,$6
	move	$22,$0
	addiu	$23,$sp,56
	sw	$4,8120($sp)
$L65:
	lw	$21,0($23)
	li	$2,1			# 0x1
	lbu	$3,0($19)
	sll	$2,$2,$21
	.set	noreorder
	.set	nomacro
	beq	$3,$0,$L66
	addiu	$20,$2,-1
	.set	macro
	.set	reorder

	lw	$5,7608($sp)
	addiu	$2,$22,16
	addu	$3,$fp,$2
	addu	$2,$5,$2
	addiu	$17,$2,2
	addiu	$16,$3,2
	move	$18,$0
$L68:
	lw	$4,8176($sp)
	.set	noreorder
	.set	nomacro
	jal	mad_bit_read
	move	$5,$21
	.set	macro
	.set	reorder

	xor	$3,$20,$2
	sltu	$3,$3,1
	sb	$2,0($17)
	sb	$3,0($16)
	lbu	$2,0($19)
	addiu	$18,$18,1
	sltu	$2,$18,$2
	addiu	$17,$17,1
	.set	noreorder
	.set	nomacro
	bne	$2,$0,$L68
	addiu	$16,$16,1
	.set	macro
	.set	reorder

	addu	$22,$22,$18
$L66:
	lw	$6,8120($sp)
	addiu	$23,$23,4
	.set	noreorder
	.set	nomacro
	bne	$23,$6,$L65
	addiu	$19,$19,1
	.set	macro
	.set	reorder

	sltu	$2,$22,39
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L86
	lw	$7,7608($sp)
	.set	macro
	.set	reorder

	addiu	$2,$22,16
	addu	$3,$fp,$2
	addu	$2,$7,$2
	addiu	$2,$2,2
	addiu	$3,$3,2
	li	$4,39			# 0x27
$L72:
	addiu	$22,$22,1
	sb	$0,0($2)
	sb	$0,0($3)
	addiu	$2,$2,1
	.set	noreorder
	.set	nomacro
	bne	$22,$4,$L72
	addiu	$3,$3,1
	.set	macro
	.set	reorder

$L86:
	lw	$5,8176($sp)
$L634:
	.set	noreorder
	.set	nomacro
	jal	mad_bit_length
	addiu	$4,$sp,24
	.set	macro
	.set	reorder

	lw	$25,7608($sp)
	move	$5,$2
	lhu	$2,0($25)
	lw	$3,7516($sp)
	subu	$16,$2,$5
	.set	noreorder
	.set	nomacro
	bltz	$16,$L99
	lw	$21,0($3)
	.set	macro
	.set	reorder

$L599:
	lhu	$4,4($25)
	lbu	$6,8($25)
	lbu	$5,9($25)
	andi	$3,$6,0x2
	li	$8,2			# 0x2
	li	$2,1			# 0x1
	addiu	$7,$4,-210
	li	$4,2			# 0x2
	.set	noreorder
	.set	nomacro
	beq	$5,$4,$L575
	movz	$8,$2,$3
	.set	macro
	.set	reorder

	andi	$2,$6,0x4
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L117
	lw	$3,7608($sp)
	.set	macro
	.set	reorder

	lui	$2,%hi(pretab)
	lui	$3,%hi(pretab+22)
	lw	$4,7608($sp)
	addiu	$5,$2,%lo(pretab)
	addiu	$9,$3,%lo(pretab+22)
	addiu	$6,$sp,360
$L119:
	lbu	$2,18($4)
	lbu	$3,0($5)
	addiu	$5,$5,1
	addu	$2,$2,$3
	sll	$2,$2,$8
	subu	$2,$7,$2
	sw	$2,0($6)
	addiu	$4,$4,1
	.set	noreorder
	.set	nomacro
	bne	$5,$9,$L119
	addiu	$6,$6,4
	.set	macro
	.set	reorder

$L113:
	lw	$13,8176($sp)
$L633:
	move	$5,$16
	lw	$2,0($13)
	lw	$3,4($13)
	move	$4,$13
	sw	$2,24($sp)
	.set	noreorder
	.set	nomacro
	jal	mad_bit_skip
	sw	$3,28($sp)
	.set	macro
	.set	reorder

	lhu	$4,30($sp)
	li	$2,31			# 0x1f
	li	$3,-8			# 0xfffffffffffffff8
	subu	$2,$2,$4
	and	$2,$2,$3
	addu	$17,$4,$2
	move	$5,$17
	.set	noreorder
	.set	nomacro
	jal	mad_bit_read
	addiu	$4,$sp,24
	.set	macro
	.set	reorder

	lw	$14,7608($sp)
	move	$19,$2
	lbu	$2,10($14)
	lui	$18,%hi(mad_huff_pair_table)
	sll	$2,$2,3
	addiu	$3,$18,%lo(mad_huff_pair_table)
	addu	$2,$2,$3
	lw	$20,0($2)
	lhu	$8,6($2)
	lbu	$4,0($21)
	lbu	$5,16($14)
	.set	noreorder
	.set	nomacro
	beq	$20,$0,$L121
	lhu	$7,4($2)
	.set	macro
	.set	reorder

	lw	$22,7512($sp)
	lhu	$3,2($14)
	addiu	$21,$21,1
	sll	$2,$4,2
	addiu	$18,$22,-2304
	sw	$21,7572($sp)
	subu	$fp,$16,$17
	addu	$22,$2,$18
	lw	$21,360($sp)
	.set	noreorder
	.set	nomacro
	beq	$3,$0,$L576
	addiu	$23,$3,-1
	.set	macro
	.set	reorder

	addu	$6,$17,$fp
	.set	noreorder
	.set	nomacro
	blez	$6,$L577
	addiu	$2,$sp,364
	.set	macro
	.set	reorder

	addiu	$5,$5,1
	sw	$5,7584($sp)
	sw	$7,7588($sp)
	sw	$8,7592($sp)
	sw	$2,7576($sp)
	sw	$0,7580($sp)
	move	$10,$0
$L128:
	.set	noreorder
	.set	nomacro
	beq	$18,$22,$L578
	lw	$3,7584($sp)
	.set	macro
	.set	reorder

$L129:
	slt	$2,$17,21
	.set	noreorder
	.set	nomacro
	bne	$2,$0,$L579
	li	$16,31			# 0x1f
	.set	macro
	.set	reorder

$L138:
	lw	$14,7592($sp)
	li	$25,1			# 0x1
	subu	$4,$17,$14
	sll	$2,$25,$14
	addiu	$2,$2,-1
	srl	$3,$19,$4
	and	$3,$3,$2
	sll	$3,$3,1
	addu	$16,$20,$3
	lhu	$2,0($16)
	andi	$2,$2,0x1
	bne	$2,$0,$L140
	move	$5,$4
	li	$6,1			# 0x1
$L142:
	lhu	$3,0($16)
	move	$17,$5
	srl	$2,$3,1
	andi	$2,$2,0x7
	sll	$4,$6,$2
	subu	$5,$5,$2
	addiu	$4,$4,-1
	srl	$2,$19,$5
	and	$2,$2,$4
	srl	$3,$3,4
	addu	$3,$3,$2