wnv1.s

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」· S 代码 · 共 631 行

.file	1 "wnv1.c"
.section .mdebug.abi32
.previous
.section	.text.decode_init,"ax",@progbits
.align	2
.align	5
.ent	decode_init
.type	decode_init, @function
decode_init:
.frame	$sp,64,$31		# vars= 0, regs= 1/0, args= 56, gp= 0
.mask	0x80000000,-8
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

move	$3,$4
addiu	$sp,$sp,-64
lui	$4,%hi(code_vlc)
sw	$31,56($sp)
lui	$2,%hi(code_tab)
addiu	$4,$4,%lo(code_vlc)
addiu	$10,$2,%lo(code_tab)
lw	$8,136($3)
lw	$2,4($4)
li	$9,4			# 0x4
addiu	$7,$10,2
li	$11,2			# 0x2
li	$5,9			# 0x9
li	$6,16			# 0x10
sw	$3,0($8)
beq	$2,$0,$L6
sw	$9,52($3)

lw	$31,56($sp)
move	$2,$0
j	$31
addiu	$sp,$sp,64

$L6:
li	$2,1			# 0x1
sw	$9,28($sp)
sw	$11,32($sp)
sw	$2,48($sp)
sw	$9,16($sp)
sw	$11,20($sp)
sw	$10,24($sp)
sw	$0,36($sp)
sw	$0,40($sp)
jal	init_vlc_sparse
sw	$0,44($sp)

lw	$31,56($sp)
move	$2,$0
j	$31
addiu	$sp,$sp,64

.set	macro
.set	reorder
.end	decode_init
.section	.rodata.str1.4,"aMS",@progbits,1
.align	2
$LC0:
.ascii	"get_buffer() failed\012\000"
.align	2
$LC1:
.ascii	"Unknown WNV1 frame header value %i, please upload file f"
.ascii	"or study\012\000"
.section	.text.decode_frame,"ax",@progbits
.align	2
.align	5
.ent	decode_frame
.type	decode_frame, @function
decode_frame:
.frame	$sp,56,$31		# vars= 0, regs= 9/0, args= 16, gp= 0
.mask	0x80ff0000,-8
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-56
sw	$23,44($sp)
sw	$22,40($sp)
sw	$21,36($sp)
sw	$20,32($sp)
sw	$19,28($sp)
sw	$18,24($sp)
sw	$31,48($sp)
sw	$17,20($sp)
sw	$16,16($sp)
lw	$17,136($4)
move	$18,$4
lw	$2,8($17)
move	$22,$5
move	$23,$6
move	$20,$7
lw	$21,72($sp)
beq	$2,$0,$L8
addiu	$19,$17,8

lw	$2,264($4)
jal	$2
move	$5,$19

$L8:
lw	$2,260($18)
sw	$0,80($19)
move	$4,$18
jal	$2
move	$5,$19

bltz	$2,$L52
li	$2,1			# 0x1

slt	$3,$21,9
bne	$3,$0,$L13
sw	$2,48($19)

lui	$2,%hi(ff_reverse)
addiu	$6,$2,%lo(ff_reverse)
move	$4,$20
li	$5,8			# 0x8
$L15:
lbu	$2,8($4)
addiu	$5,$5,1
addu	$2,$2,$6
lbu	$3,0($2)
sb	$3,8($4)
bne	$21,$5,$L15
addiu	$4,$4,1

$L13:
sll	$3,$21,3
addiu	$2,$3,-57
sra	$2,$2,3
addiu	$3,$3,-64
bltz	$2,$L16
addiu	$16,$17,212

bltz	$3,$L16
addiu	$4,$20,8

addu	$2,$4,$2
sw	$4,0($16)
sw	$3,12($16)
sw	$2,4($16)
sw	$0,8($16)
lbu	$2,2($20)
li	$3,6			# 0x6
srl	$4,$2,4
beq	$4,$3,$L60
li	$2,2			# 0x2

li	$2,8			# 0x8
$L61:
subu	$2,$2,$4
slt	$3,$2,5
beq	$3,$0,$L54
sw	$2,208($17)

blez	$2,$L55
move	$4,$18

$L22:
lw	$7,44($18)
lw	$25,0($19)
lw	$14,4($19)
blez	$7,$L26
lw	$13,8($19)

lw	$4,40($18)
move	$8,$0
move	$15,$0
move	$24,$0
move	$20,$0
$L28:
srl	$2,$4,31
addu	$2,$2,$4
sra	$2,$2,1
blez	$2,$L42
nop

move	$11,$25
move	$10,$0
j	$L29
lui	$12,%hi(code_vlc)

$L30:
lw	$3,208($17)
addiu	$2,$4,-7
sll	$2,$2,$3
addu	$2,$8,$2
$L32:
sb	$2,0($11)
lw	$7,8($16)
lw	$8,0($16)
sra	$4,$7,3
addu	$4,$4,$8
lbu	$3,0($4)
lbu	$5,1($4)
lbu	$6,3($4)
lbu	$2,2($4)
sll	$3,$3,24
sll	$5,$5,16
or	$3,$3,$5
or	$3,$3,$6
sll	$2,$2,8
andi	$4,$7,0x7
or	$2,$2,$3
sll	$2,$2,$4
addiu	$3,$12,%lo(code_vlc)
lw	$4,4($3)
srl	$2,$2,23
sll	$2,$2,2
addu	$2,$2,$4
lh	$3,2($2)
lh	$4,0($2)
addu	$7,$7,$3
li	$2,15			# 0xf
beq	$4,$2,$L56
sw	$7,8($16)

lw	$3,208($17)
addiu	$2,$4,-7
sll	$2,$2,$3
addu	$2,$15,$2
$L35:
andi	$8,$2,0x00ff
addu	$2,$10,$14
sb	$8,0($2)
lw	$7,8($16)
lw	$9,0($16)
sra	$4,$7,3
addu	$4,$4,$9
lbu	$3,0($4)
lbu	$5,1($4)
lbu	$6,3($4)
lbu	$2,2($4)
sll	$3,$3,24
sll	$5,$5,16
or	$3,$3,$5
or	$3,$3,$6
sll	$2,$2,8
andi	$4,$7,0x7
or	$2,$2,$3
sll	$2,$2,$4
addiu	$3,$12,%lo(code_vlc)
lw	$4,4($3)
srl	$2,$2,23
sll	$2,$2,2
addu	$2,$2,$4
lh	$3,2($2)
lh	$4,0($2)
addu	$7,$7,$3
li	$2,15			# 0xf
move	$15,$8
lbu	$8,0($11)
beq	$4,$2,$L57
sw	$7,8($16)

lw	$3,208($17)
addiu	$2,$4,-7
sll	$2,$2,$3
addu	$2,$8,$2
$L38:
andi	$8,$2,0x00ff
sb	$8,1($11)
lw	$7,8($16)
lw	$9,0($16)
sra	$4,$7,3
addu	$4,$4,$9
lbu	$3,0($4)
lbu	$5,1($4)
lbu	$6,3($4)
lbu	$2,2($4)
sll	$3,$3,24
sll	$5,$5,16
or	$3,$3,$5
or	$3,$3,$6
sll	$2,$2,8
andi	$4,$7,0x7
or	$2,$2,$3
sll	$2,$2,$4
addiu	$3,$12,%lo(code_vlc)
lw	$4,4($3)
srl	$2,$2,23
sll	$2,$2,2
addu	$2,$2,$4
lh	$3,2($2)
lh	$4,0($2)
addu	$7,$7,$3
li	$2,15			# 0xf
beq	$4,$2,$L58
sw	$7,8($16)

lw	$3,208($17)
addiu	$2,$4,-7
sll	$2,$2,$3
addu	$2,$24,$2
andi	$3,$2,0x00ff
addu	$2,$10,$13
sb	$3,0($2)
lw	$4,40($18)
addiu	$10,$10,1
srl	$2,$4,31
addu	$2,$2,$4
sra	$2,$2,1
slt	$2,$10,$2
move	$24,$3
beq	$2,$0,$L59
addiu	$11,$11,2

$L29:
lw	$7,8($16)
lw	$9,0($16)
sra	$4,$7,3
addu	$4,$4,$9
lbu	$3,0($4)
lbu	$5,1($4)
lbu	$6,3($4)
lbu	$2,2($4)
sll	$3,$3,24
sll	$5,$5,16
or	$3,$3,$5
or	$3,$3,$6
sll	$2,$2,8
andi	$4,$7,0x7
or	$2,$2,$3
sll	$2,$2,$4
addiu	$3,$12,%lo(code_vlc)
lw	$4,4($3)
srl	$2,$2,23
sll	$2,$2,2
addu	$2,$2,$4
lh	$3,2($2)
lh	$4,0($2)
addu	$7,$7,$3
li	$2,15			# 0xf
bne	$4,$2,$L30
sw	$7,8($16)

sra	$2,$7,3
addu	$2,$2,$9
lbu	$4,0($2)
lbu	$5,1($2)
lbu	$6,3($2)
lbu	$3,2($2)
sll	$5,$5,16
sll	$4,$4,24
lw	$2,208($17)
or	$4,$4,$5
or	$4,$4,$6
sll	$3,$3,8
li	$5,8			# 0x8
subu	$5,$5,$2
or	$3,$3,$4
andi	$2,$7,0x7
sll	$3,$3,$2
subu	$4,$0,$5
lui	$2,%hi(ff_reverse)
addiu	$2,$2,%lo(ff_reverse)
srl	$3,$3,$4
addu	$3,$3,$2
lbu	$2,0($3)
addu	$5,$7,$5
j	$L32
sw	$5,8($16)

$L58:
sra	$2,$7,3
addu	$2,$2,$9
lbu	$4,0($2)
lbu	$5,1($2)
lbu	$6,3($2)
lbu	$3,2($2)
sll	$5,$5,16
sll	$4,$4,24
lw	$2,208($17)
or	$4,$4,$5
or	$4,$4,$6
sll	$3,$3,8
li	$5,8			# 0x8
subu	$5,$5,$2
or	$3,$3,$4
andi	$2,$7,0x7
subu	$4,$0,$5
sll	$3,$3,$2
lui	$2,%hi(ff_reverse)
srl	$3,$3,$4
addiu	$2,$2,%lo(ff_reverse)
addu	$3,$3,$2
lbu	$2,0($3)
addu	$5,$7,$5
andi	$3,$2,0x00ff
addu	$2,$10,$13
sw	$5,8($16)
sb	$3,0($2)
lw	$4,40($18)
addiu	$10,$10,1
srl	$2,$4,31
addu	$2,$2,$4
sra	$2,$2,1
slt	$2,$10,$2
move	$24,$3
bne	$2,$0,$L29
addiu	$11,$11,2

$L59:
lw	$7,44($18)
$L42:
addiu	$20,$20,1
slt	$2,$20,$7
lw	$6,16($19)
lw	$5,20($19)
beq	$2,$0,$L26
lw	$3,24($19)

addu	$25,$25,$6
addu	$14,$14,$5
j	$L28
addu	$13,$13,$3

$L57:
sra	$2,$7,3
addu	$2,$2,$9
lbu	$4,0($2)
lbu	$5,1($2)
lbu	$6,3($2)
lbu	$3,2($2)
sll	$5,$5,16
sll	$4,$4,24
lw	$2,208($17)
or	$4,$4,$5
or	$4,$4,$6
sll	$3,$3,8
li	$5,8			# 0x8
subu	$5,$5,$2
or	$3,$3,$4
andi	$2,$7,0x7
sll	$3,$3,$2
subu	$4,$0,$5
lui	$2,%hi(ff_reverse)
addiu	$2,$2,%lo(ff_reverse)
srl	$3,$3,$4
addu	$3,$3,$2
lbu	$2,0($3)
addu	$5,$7,$5
j	$L38
sw	$5,8($16)

$L56:
sra	$2,$7,3
addu	$2,$2,$8
lbu	$4,0($2)
lbu	$5,1($2)
lbu	$6,3($2)
lbu	$3,2($2)
sll	$5,$5,16
sll	$4,$4,24
lw	$2,208($17)
or	$4,$4,$5
or	$4,$4,$6
sll	$3,$3,8
li	$5,8			# 0x8
subu	$5,$5,$2
or	$3,$3,$4
andi	$2,$7,0x7
sll	$3,$3,$2
subu	$4,$0,$5
lui	$2,%hi(ff_reverse)
addiu	$2,$2,%lo(ff_reverse)
srl	$3,$3,$4
addu	$3,$3,$2
lbu	$2,0($3)
addu	$5,$7,$5
j	$L35
sw	$5,8($16)

$L26:
li	$2,200			# 0xc8
sw	$2,0($23)
move	$6,$19
move	$7,$22
addiu	$8,$17,200
$L45:
lw	$2,0($6)
lw	$3,4($6)
lw	$4,8($6)
lw	$5,12($6)
addiu	$6,$6,16
sw	$2,0($7)
sw	$3,4($7)
sw	$4,8($7)
sw	$5,12($7)
bne	$6,$8,$L45
addiu	$7,$7,16

lw	$2,4($6)
lw	$3,0($6)
sw	$2,4($7)
sw	$3,0($7)
$L12:
move	$2,$21
lw	$31,48($sp)
lw	$23,44($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)
j	$31
addiu	$sp,$sp,56

$L16:
move	$4,$0
move	$3,$0
move	$2,$0
sw	$4,0($16)
sw	$3,12($16)
sw	$2,4($16)
sw	$0,8($16)
lbu	$2,2($20)
li	$3,6			# 0x6
srl	$4,$2,4
bne	$4,$3,$L61
li	$2,8			# 0x8

li	$2,2			# 0x2
$L60:
j	$L22
sw	$2,208($17)

$L54:
lbu	$7,2($20)
lui	$6,%hi($LC1)
addiu	$6,$6,%lo($LC1)
srl	$7,$7,4
move	$4,$18
jal	av_log
move	$5,$0

li	$2,4			# 0x4
j	$L22
sw	$2,208($17)

$L55:
lbu	$7,2($20)
lui	$6,%hi($LC1)
addiu	$6,$6,%lo($LC1)
srl	$7,$7,4
jal	av_log
move	$5,$0

li	$2,1			# 0x1
j	$L22
sw	$2,208($17)

$L52:
lui	$6,%hi($LC0)
move	$4,$18
addiu	$6,$6,%lo($LC0)
jal	av_log
move	$5,$0

j	$L12
li	$21,-1			# 0xffffffffffffffff

.set	macro
.set	reorder
.end	decode_frame
.globl	wnv1_decoder
.section	.rodata.str1.4
.align	2
$LC2:
.ascii	"wnv1\000"
.data
.align	2
.type	wnv1_decoder, @object
.size	wnv1_decoder, 52
wnv1_decoder:
.word	$LC2
.word	0
.word	76
.word	232
.word	decode_init
.word	0
.word	0
.word	decode_frame
.word	2
.space	16
.align	2
.type	code_tab, @object
.size	code_tab, 64
code_tab:
.half	509
.half	9
.half	253
.half	8
.half	125
.half	7
.half	61
.half	6
.half	29
.half	5
.half	13
.half	4
.half	5
.half	3
.half	0
.half	1
.half	4
.half	3
.half	12
.half	4
.half	28
.half	5
.half	60
.half	6
.half	124
.half	7
.half	252
.half	8
.half	508
.half	9
.half	255
.half	8
.local	code_vlc
.comm	code_vlc,16,4
.ident	"GCC: (GNU) 4.1.2"