pcm.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 3,963 行 · 第 1/4 页

	.file	1 "pcm.c"
	.section .mdebug.abi32
	.previous
	.section	.text.alaw2linear,"ax",@progbits
	.align	2
	.align	5
	.ent	alaw2linear
	.type	alaw2linear, @function
alaw2linear:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	andi	$4,$4,0x00ff
	xori	$6,$4,0x55
	andi	$3,$6,0xf
	andi	$4,$6,0x70
	addiu	$2,$3,33
	srl	$4,$4,4
	addu	$2,$3,$2
	addiu	$5,$4,2
	sll	$5,$2,$5
	bne	$4,$0,$L4
	sll	$3,$3,4

	addiu	$5,$3,8
$L4:
	srl	$3,$6,7
	subu	$2,$0,$5
	movz	$5,$2,$3
	j	$31
	move	$2,$5

	.set	macro
	.set	reorder
	.end	alaw2linear
	.section	.text.ulaw2linear,"ax",@progbits
	.align	2
	.align	5
	.ent	ulaw2linear
	.type	ulaw2linear, @function
ulaw2linear:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	nor	$4,$0,$4
	andi	$4,$4,0x00ff
	andi	$2,$4,0xf
	andi	$3,$4,0x70
	sll	$2,$2,3
	addiu	$2,$2,132
	srl	$3,$3,4
	sll	$4,$4,24
	sll	$2,$2,$3
	li	$5,132			# 0x84
	sra	$4,$4,24
	bltz	$4,$L12
	subu	$5,$5,$2

	addiu	$5,$2,-132
$L12:
	j	$31
	move	$2,$5

	.set	macro
	.set	reorder
	.end	ulaw2linear
	.section	.text.pcm_encode_close,"ax",@progbits
	.align	2
	.align	5
	.ent	pcm_encode_close
	.type	pcm_encode_close, @function
pcm_encode_close:
	.frame	$sp,24,$31		# vars= 0, regs= 1/0, args= 16, gp= 0
	.mask	0x80000000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-24
	sw	$31,16($sp)
	jal	av_freep
	addiu	$4,$4,408

	lw	$31,16($sp)
	move	$2,$0
	j	$31
	addiu	$sp,$sp,24

	.set	macro
	.set	reorder
	.end	pcm_encode_close
	.section	.text.pcm_decode_init,"ax",@progbits
	.align	2
	.align	5
	.ent	pcm_decode_init
	.type	pcm_decode_init, @function
pcm_decode_init:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	lw	$2,132($4)
	li	$6,65536			# 0x10000
	lw	$5,8($2)
	ori	$3,$6,0x6
	beq	$5,$3,$L18
	lw	$4,136($4)

	ori	$2,$6,0x7
	beq	$5,$2,$L34
	move	$2,$0

	j	$31
	nop

$L18:
	move	$5,$4
	move	$6,$0
	li	$8,132			# 0x84
	li	$7,256			# 0x100
$L26:
	nor	$2,$0,$6
	andi	$2,$2,0x00ff
	andi	$3,$2,0xf
	andi	$4,$2,0x70
	sll	$3,$3,3
	srl	$4,$4,4
	addiu	$3,$3,132
	sll	$2,$2,24
	sll	$3,$3,$4
	sra	$2,$2,24
	bltz	$2,$L29
	subu	$4,$8,$3

	addiu	$4,$3,-132
$L29:
	addiu	$6,$6,1
	sh	$4,0($5)
	bne	$6,$7,$L26
	addiu	$5,$5,2

	j	$31
	move	$2,$0

$L34:
	move	$7,$4
	move	$8,$0
	li	$9,256			# 0x100
$L20:
	xori	$2,$8,0x55
	andi	$6,$2,0x00ff
	andi	$3,$6,0xf
	andi	$4,$6,0x70
	addiu	$2,$3,33
	srl	$4,$4,4
	addu	$2,$3,$2
	addiu	$5,$4,2
	sll	$5,$2,$5
	bne	$4,$0,$L23
	sll	$3,$3,4

	addiu	$5,$3,8
$L23:
	srl	$3,$6,7
	subu	$2,$0,$5
	movz	$5,$2,$3
	addiu	$8,$8,1
	sh	$5,0($7)
	bne	$8,$9,$L20
	addiu	$7,$7,2

	j	$31
	move	$2,$0

	.set	macro
	.set	reorder
	.end	pcm_decode_init
	.section	.text.pcm_encode_init,"ax",@progbits
	.align	2
	.align	5
	.ent	pcm_encode_init
	.type	pcm_encode_init, @function
pcm_encode_init:
	.frame	$sp,48,$31		# vars= 0, regs= 8/0, args= 16, gp= 0
	.mask	0x807f0000,-4
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-48
	sw	$22,40($sp)
	sw	$31,44($sp)
	sw	$21,36($sp)
	sw	$20,32($sp)
	sw	$19,28($sp)
	sw	$18,24($sp)
	sw	$17,20($sp)
	sw	$16,16($sp)
	move	$22,$4
	lw	$4,132($4)
	li	$6,65536			# 0x10000
	lw	$5,8($4)
	li	$2,1			# 0x1
	ori	$3,$6,0x6
	beq	$5,$3,$L37
	sw	$2,76($22)

	ori	$2,$6,0x7
	beq	$5,$2,$L76
	lui	$2,%hi(linear_to_alaw+8192)

$L36:
	lw	$2,8($4)
	li	$3,-65536			# 0xffffffffffff0000
	addu	$2,$2,$3
	sltu	$4,$2,17
	beq	$4,$0,$L61
	lui	$3,%hi($L66)

	sll	$2,$2,2
	addiu	$3,$3,%lo($L66)
	addu	$2,$2,$3
	lw	$4,0($2)
	j	$4
	nop

	.rdata
	.align	2
	.align	2
$L66:
	.word	$L62
	.word	$L62
	.word	$L62
	.word	$L62
	.word	$L63
	.word	$L63
	.word	$L63
	.word	$L63
	.word	$L64
	.word	$L64
	.word	$L64
	.word	$L64
	.word	$L65
	.word	$L65
	.word	$L65
	.word	$L65
	.word	$L65
	.section	.text.pcm_encode_init
$L63:
	lw	$2,68($22)
	sw	$2,272($22)
$L61:
	jal	avcodec_alloc_frame
	nop

	li	$3,1			# 0x1
	sw	$3,48($2)
	sw	$2,408($22)
	lw	$31,44($sp)
	lw	$22,40($sp)
	lw	$21,36($sp)
	lw	$20,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	move	$2,$0
	j	$31
	addiu	$sp,$sp,48

$L37:
	lui	$2,%hi(linear_to_ulaw+8192)
	addiu	$20,$2,%lo(linear_to_ulaw+8192)
	move	$19,$0
	move	$18,$0
	li	$2,127			# 0x7f
$L77:
	bne	$19,$2,$L51
	andi	$16,$19,0x00ff

	li	$17,8192			# 0x2000
$L53:
	slt	$2,$18,$17
	beq	$2,$0,$L55
	sll	$2,$19,24

	sra	$2,$2,24
	xori	$6,$2,0x7f
	move	$5,$18
	addu	$4,$18,$20
	subu	$3,$20,$18
	nor	$2,$0,$2
$L56:
	blez	$5,$L57
	sb	$2,0($4)

	sb	$6,0($3)
$L57:
	addiu	$5,$5,1
	addiu	$4,$4,1
	bne	$5,$17,$L56
	addiu	$3,$3,-1

	move	$18,$5
$L55:
	addiu	$19,$19,1
	li	$2,128			# 0x80
	bne	$19,$2,$L77
	li	$2,127			# 0x7f

	lui	$2,%hi(linear_to_ulaw)
	addiu	$3,$2,%lo(linear_to_ulaw)
	lbu	$4,1($3)
	sb	$4,%lo(linear_to_ulaw)($2)
	j	$L36
	lw	$4,132($22)

$L51:
	addiu	$4,$16,1
	nor	$4,$0,$4
	andi	$4,$4,0x00ff
	jal	ulaw2linear
	nor	$16,$0,$16

	andi	$4,$16,0x00ff
	jal	ulaw2linear
	move	$17,$2

	addiu	$2,$2,4
	addu	$17,$17,$2
	j	$L53
	sra	$17,$17,3

$L76:
	addiu	$20,$2,%lo(linear_to_alaw+8192)
	move	$19,$0
	move	$18,$0
	li	$21,-43
	li	$2,127			# 0x7f
$L78:
	bne	$19,$2,$L40
	andi	$17,$19,0x00ff

	li	$16,8192			# 0x2000
$L42:
	slt	$2,$18,$16
	beq	$2,$0,$L44
	li	$2,-43

	sll	$3,$19,24
	sra	$3,$3,24
	xor	$7,$3,$2
	move	$6,$18
	xori	$3,$3,0x55
	move	$2,$16
	addu	$5,$18,$20
	subu	$4,$20,$18
$L45:
	blez	$6,$L46
	sb	$7,0($5)

	sb	$3,0($4)
$L46:
	addiu	$6,$6,1
	addiu	$5,$5,1
	bne	$6,$2,$L45
	addiu	$4,$4,-1

	move	$18,$6
$L44:
	addiu	$19,$19,1
	li	$2,128			# 0x80
	bne	$19,$2,$L78
	li	$2,127			# 0x7f

	lui	$2,%hi(linear_to_alaw)
	addiu	$3,$2,%lo(linear_to_alaw)
	lbu	$4,1($3)
	sb	$4,%lo(linear_to_alaw)($2)
	j	$L36
	lw	$4,132($22)

$L40:
	addiu	$4,$17,1
	xor	$4,$4,$21
	jal	alaw2linear
	andi	$4,$4,0x00ff

	xori	$4,$17,0xd5
	jal	alaw2linear
	move	$16,$2

	addiu	$2,$2,4
	addu	$16,$16,$2
	j	$L42
	sra	$16,$16,3

$L62:
	lw	$2,68($22)
	sll	$2,$2,1
	j	$L61
	sw	$2,272($22)

$L65:
	lw	$3,68($22)
	sll	$2,$3,1
	addu	$2,$2,$3
	j	$L61
	sw	$2,272($22)

$L64:
	lw	$2,68($22)
	sll	$2,$2,2
	j	$L61
	sw	$2,272($22)

	.set	macro
	.set	reorder
	.end	pcm_encode_init
	.section	.rodata.str1.4,"aMS",@progbits,1
	.align	2
$LC0:
	.ascii	"invalid PCM packet\012\000"
	.section	.text.pcm_decode_frame,"ax",@progbits
	.align	2
	.align	5
	.ent	pcm_decode_frame
	.type	pcm_decode_frame, @function
pcm_decode_frame:
	.frame	$sp,48,$31		# vars= 0, regs= 7/0, args= 16, gp= 0
	.mask	0x803f0000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-48
	sw	$21,36($sp)
	sw	$20,32($sp)
	sw	$19,28($sp)
	sw	$17,20($sp)
	sw	$16,16($sp)
	sw	$31,40($sp)
	sw	$18,24($sp)
	move	$17,$4
	lw	$4,228($4)
	move	$19,$5
	move	$21,$6
	move	$20,$7
	lw	$16,64($sp)
	jal	av_get_bits_per_sample
	lw	$18,136($17)

	addiu	$4,$2,7
	slt	$3,$2,0
	movn	$2,$4,$3
	sra	$2,$2,3
	beq	$2,$0,$L81
	nop

	div	$0,$16,$2
	teq	$2,$0,7
	mfhi	$2
	bne	$2,$0,$L209
	lui	$6,%hi($LC0)

$L81:
	lw	$4,0($21)
	lw	$3,132($17)
	srl	$2,$4,31
	lw	$5,8($3)
	addu	$2,$2,$4
	li	$3,-65536			# 0xffffffffffff0000
	addu	$5,$5,$3
	sra	$2,$2,1
	slt	$3,$16,$2
	move	$7,$16
	sltu	$4,$5,18
	movz	$7,$2,$3
	sw	$0,0($21)
	bne	$4,$0,$L210
	move	$6,$19

	li	$3,-1			# 0xffffffffffffffff
$L84:
	lw	$31,40($sp)
	lw	$21,36($sp)
	lw	$20,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	move	$2,$3
	j	$31
	addiu	$sp,$sp,48

$L210:
	lui	$3,%hi($L103)
	sll	$2,$5,2
	addiu	$3,$3,%lo($L103)
	addu	$2,$2,$3
	lw	$4,0($2)
	j	$4
	nop

	.rdata
	.align	2
	.align	2
$L103:
	.word	$L86
	.word	$L87
	.word	$L88
	.word	$L89
	.word	$L90
	.word	$L91
	.word	$L92
	.word	$L92
	.word	$L93
	.word	$L94
	.word	$L95
	.word	$L96
	.word	$L97
	.word	$L98
	.word	$L99
	.word	$L100
	.word	$L101
	.word	$L102
	.section	.text.pcm_decode_frame
$L86:
	sra	$7,$7,1
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L146:
	addiu	$4,$4,2
	lbu	$2,-1($4)
	lbu	$3,-2($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$6,$6,-1
	sh	$2,0($5)
	bne	$6,$0,$L146
	addiu	$5,$5,2

	sll	$2,$7,1
$L218:
	addu	$6,$19,$2
	move	$3,$2
	subu	$2,$6,$19
	sw	$2,0($21)
$L212:
	lw	$31,40($sp)
	lw	$21,36($sp)
	lw	$20,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	move	$2,$3
	j	$31
	addiu	$sp,$sp,48

$L102:
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	j	$L161
	move	$4,$20

$L211:
	addiu	$2,$3,-128
$L164:
	sll	$2,$2,8
	addiu	$6,$6,-1
	sh	$2,0($5)
	beq	$6,$0,$L204
	addiu	$5,$5,2

$L161:
	lbu	$3,0($4)
	andi	$2,$3,0x80
	bne	$2,$0,$L211
	addiu	$4,$4,1

	j	$L164
	subu	$2,$0,$3

$L101:
	li	$2,1431633920			# 0x55550000
	ori	$2,$2,0x5556
	mult	$7,$2
	sra	$3,$7,31
	mfhi	$2
	subu	$7,$2,$3
	blez	$7,$L105
	lui	$2,%hi(ff_reverse)

	addiu	$10,$2,%lo(ff_reverse)
	move	$9,$7
	move	$8,$19
	move	$6,$20
$L143:
	addiu	$6,$6,3
	lbu	$3,-3($6)
	lbu	$4,-1($6)
	lbu	$2,-2($6)
	sll	$3,$3,16
	or	$3,$3,$4
	sll	$2,$2,8
	or	$2,$2,$3
	srl	$4,$2,4
	andi	$4,$4,0xff
	srl	$2,$2,12
	andi	$2,$2,0xff
	addu	$4,$4,$10
	addu	$2,$2,$10
	lbu	$3,0($4)
	lbu	$5,0($2)
	sll	$3,$3,8
	addu	$3,$3,$5
	addiu	$9,$9,-1
	sh	$3,0($8)
	bne	$9,$0,$L143
	addiu	$8,$8,2

	sll	$2,$7,1
$L217:
	addu	$6,$19,$2
	addu	$3,$2,$7
	subu	$2,$6,$19
	j	$L212
	sw	$2,0($21)

$L94:
	bltz	$7,$L213
	move	$2,$7

$L115:
	sra	$7,$2,2
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L117:
	lbu	$2,0($4)
	lbu	$3,1($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,4
	bne	$6,$0,$L117
	addiu	$5,$5,2

	sll	$2,$7,1
$L220:
	addu	$6,$19,$2
	subu	$2,$6,$19
	sll	$3,$7,2
	j	$L212
	sw	$2,0($21)

$L98:
	li	$2,1431633920			# 0x55550000
	ori	$2,$2,0x5556
	mult	$7,$2
	sra	$3,$7,31
	mfhi	$2
	subu	$7,$2,$3
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L133:
	lbu	$2,0($4)
	lbu	$3,1($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,3
	bne	$6,$0,$L133
	addiu	$5,$5,2

	j	$L217
	sll	$2,$7,1

$L97:
	li	$2,1431633920			# 0x55550000
	ori	$2,$2,0x5556
	mult	$7,$2
	sra	$3,$7,31
	mfhi	$2
	subu	$7,$2,$3
	blez	$7,$L135
	addiu	$8,$20,1

	move	$6,$7
	move	$5,$19
	move	$4,$8
$L130:
	lbu	$2,1($4)
	lbu	$3,0($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,3
	bne	$6,$0,$L130
	addiu	$5,$5,2

	sll	$3,$7,1
$L219:
	addu	$2,$3,$7
	addu	$8,$8,$2
	addu	$6,$19,$3
$L135:
	addiu	$2,$8,-1
	subu	$3,$2,$20
	subu	$2,$6,$19
	j	$L212
	sw	$2,0($21)

$L90:
	blez	$7,$L223
	subu	$2,$6,$19

	move	$5,$7
	move	$4,$19
	move	$3,$20
$L157:
	lbu	$2,0($3)
	addiu	$5,$5,-1
	sll	$2,$2,8
	sh	$2,0($4)
	addiu	$3,$3,1
	bne	$5,$0,$L157
	addiu	$4,$4,2

$L204:
	sll	$2,$7,1
$L221:
	addu	$6,$19,$2
	subu	$2,$6,$19
	move	$3,$7
	j	$L212
	sw	$2,0($21)

$L89:
	sra	$7,$7,1
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L155:
	addiu	$4,$4,2
	lbu	$2,-2($4)
	lbu	$3,-1($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$2,$2,-32768
	addiu	$6,$6,-1
	sh	$2,0($5)
	bne	$6,$0,$L155
	addiu	$5,$5,2

	j	$L218
	sll	$2,$7,1

$L100:
	li	$2,1431633920			# 0x55550000
	ori	$2,$2,0x5556
	mult	$7,$2
	sra	$3,$7,31
	mfhi	$2
	subu	$7,$2,$3
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L140:
	lbu	$2,0($4)
	lbu	$3,1($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$2,$2,-32768
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,3
	bne	$6,$0,$L140
	addiu	$5,$5,2

	j	$L217
	sll	$2,$7,1

$L99:
	li	$2,1431633920			# 0x55550000
	ori	$2,$2,0x5556
	mult	$7,$2
	sra	$3,$7,31
	mfhi	$2
	subu	$7,$2,$3
	blez	$7,$L135
	addiu	$8,$20,1

	move	$6,$7
	move	$5,$19
	move	$4,$8
$L137:
	lbu	$2,1($4)
	lbu	$3,0($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$2,$2,-32768
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,3
	bne	$6,$0,$L137
	addiu	$5,$5,2

	j	$L219
	sll	$3,$7,1

$L96:
	bltz	$7,$L214
	move	$2,$7

$L124:
	sra	$7,$2,2
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L126:
	lbu	$2,0($4)
	lbu	$3,1($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$2,$2,-32768
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,4
	bne	$6,$0,$L126
	addiu	$5,$5,2

	j	$L220
	sll	$2,$7,1

$L95:
	bltz	$7,$L215
	move	$2,$7

$L119:
	sra	$7,$2,2
	blez	$7,$L120
	addiu	$8,$20,2

	move	$6,$7
	move	$5,$19
	move	$4,$8
$L122:
	lbu	$2,1($4)
	lbu	$3,0($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$2,$2,-32768
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,4
	bne	$6,$0,$L122
	addiu	$5,$5,2

	sll	$3,$7,1
$L222:
	sll	$2,$7,2
	addu	$8,$8,$2
	addu	$6,$19,$3
$L120:
	addiu	$2,$8,-2
	subu	$3,$2,$20
	subu	$2,$6,$19
	j	$L212
	sw	$2,0($21)

$L92:
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L166:
	lbu	$2,0($4)
	addiu	$6,$6,-1
	sll	$2,$2,1
	addu	$2,$2,$18
	lhu	$3,0($2)
	addiu	$4,$4,1
	sh	$3,0($5)
	bne	$6,$0,$L166
	addiu	$5,$5,2

	j	$L221
	sll	$2,$7,1

$L93:
	bltz	$7,$L216
	move	$2,$7

$L109:
	sra	$7,$2,2
	blez	$7,$L120
	addiu	$8,$20,2

	move	$6,$7
	move	$5,$19
	move	$4,$8
$L112:
	lbu	$2,1($4)
	lbu	$3,0($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$6,$6,-1
	sh	$2,0($5)
	addiu	$4,$4,4
	bne	$6,$0,$L112
	addiu	$5,$5,2

	j	$L222
	sll	$3,$7,1

$L88:
	sra	$7,$7,1
	blez	$7,$L223
	subu	$2,$6,$19

	move	$6,$7
	move	$5,$19
	move	$4,$20
$L152:
	addiu	$4,$4,2
	lbu	$2,-1($4)
	lbu	$3,-2($4)
	sll	$2,$2,8
	or	$2,$2,$3
	addiu	$2,$2,-32768
	addiu	$6,$6,-1
	sh	$2,0($5)
	bne	$6,$0,$L152
	addiu	$5,$5,2

	j	$L218
	sll	$2,$7,1

$L91:
	blez	$7,$L223
	subu	$2,$6,$19

	move	$5,$7
	move	$4,$19
	move	$3,$20
$L159:
	lbu	$2,0($3)
	addiu	$5,$5,-1
	addiu	$2,$2,-128
	sll	$2,$2,8
	sh	$2,0($4)
	addiu	$3,$3,1
	bne	$5,$0,$L159