dxa.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 741 行

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

lw	$4,4($4)
li	$2,68			# 0x44
lbu	$3,0($4)
beq	$3,$2,$L10
nop

$L2:
move	$4,$0
$L7:
$L11:
j	$31
move	$2,$4

$L10:
lbu	$3,1($4)
li	$2,69			# 0x45
bne	$3,$2,$L2
nop

lbu	$3,2($4)
li	$2,88			# 0x58
bne	$3,$2,$L2
nop

lbu	$3,3($4)
li	$2,65			# 0x41
beq	$3,$2,$L7
li	$4,100			# 0x64

j	$L11
move	$4,$0

.set	macro
.set	reorder
.end	dxa_probe
.section	.rodata.str1.4,"aMS",@progbits,1
.align	2
$LC0:
.ascii	"File contains no frames ???\012\000"
.globl	__divdi3
.align	2
$LC1:
.ascii	"%d frame(s)\012\000"
.section	.text.dxa_read_header,"ax",@progbits
.align	2
.align	5
.ent	dxa_read_header
.type	dxa_read_header, @function
dxa_read_header:
.frame	$sp,88,$31		# vars= 16, regs= 10/0, args= 32, gp= 0
.mask	0xc0ff0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-88
sw	$18,56($sp)
addiu	$18,$4,16
sw	$20,64($sp)
sw	$31,84($sp)
sw	$fp,80($sp)
sw	$23,76($sp)
sw	$22,72($sp)
sw	$21,68($sp)
sw	$19,60($sp)
sw	$17,52($sp)
sw	$16,48($sp)
move	$20,$4
move	$4,$18
jal	get_le32
lw	$19,12($20)

li	$3,1096286208			# 0x41580000
ori	$3,$3,0x4544
beq	$2,$3,$L38
nop

$L13:
lw	$31,84($sp)
lw	$fp,80($sp)
lw	$23,76($sp)
lw	$22,72($sp)
lw	$21,68($sp)
lw	$20,64($sp)
lw	$19,60($sp)
lw	$18,56($sp)
lw	$17,52($sp)
lw	$16,48($sp)
li	$2,-1			# 0xffffffffffffffff
j	$31
addiu	$sp,$sp,88

$L38:
jal	get_byte
move	$4,$18

move	$4,$18
jal	get_be16
move	$22,$2

beq	$2,$0,$L39
sw	$2,0($19)

jal	get_be32
move	$4,$18

blez	$2,$L18
move	$3,$2

li	$2,1000			# 0x3e8
sw	$2,36($sp)
sw	$3,32($sp)
$L20:
jal	get_be16
move	$4,$18

move	$4,$18
jal	get_be16
move	$fp,$2

sw	$0,4($19)
move	$4,$20
move	$5,$0
jal	av_new_stream
move	$23,$2

beq	$2,$0,$L13
move	$21,$2

jal	get_le32
move	$4,$18

li	$3,1163264000			# 0x45560000
ori	$3,$3,0x4157
beq	$2,$3,$L40
lw	$2,36($sp)

$L42:
lw	$3,8($21)
lw	$9,32($sp)
move	$6,$2
sra	$7,$2,31
li	$2,102			# 0x66
sw	$2,228($3)
li	$2,2147418112			# 0x7fff0000
sw	$23,44($3)
sw	$fp,40($3)
sw	$0,224($3)
sra	$8,$9,31
move	$3,$0
addiu	$5,$sp,32
addiu	$4,$sp,36
ori	$2,$2,0xffff
sw	$8,20($sp)
sw	$3,28($sp)
sw	$9,16($sp)
jal	av_reduce
sw	$2,24($sp)

lw	$6,32($sp)
lw	$7,36($sp)
move	$4,$21
jal	av_set_pts_info
li	$5,33			# 0x21

andi	$2,$22,0xc0
beq	$2,$0,$L35
nop

lw	$3,8($21)
lw	$2,44($3)
sra	$2,$2,1
sw	$2,44($3)
$L35:
lw	$2,4($19)
move	$4,$18
sltu	$2,$2,1
jal	url_ftell
sw	$2,32($19)

lw	$16,0($19)
li	$8,983040			# 0xf0000
ori	$8,$8,0x4240
mult	$16,$8
lw	$4,32($sp)
mflo	$8
mfhi	$9
sra	$7,$4,31
mul	$12,$9,$4
multu	$4,$8
lw	$10,36($sp)
mflo	$4
mfhi	$5
mul	$11,$7,$8
sw	$2,24($19)
sw	$3,28($19)
addu	$8,$11,$12
move	$2,$0
move	$3,$0
addu	$5,$8,$5
move	$6,$10
sra	$7,$10,31
sw	$2,3824($20)
jal	__divdi3
sw	$3,3828($20)

lui	$6,%hi($LC1)
sw	$2,3832($20)
sw	$3,3836($20)
move	$4,$20
move	$7,$16
addiu	$6,$6,%lo($LC1)
jal	av_log
li	$5,2			# 0x2

lw	$31,84($sp)
lw	$fp,80($sp)
lw	$23,76($sp)
lw	$22,72($sp)
lw	$21,68($sp)
lw	$20,64($sp)
lw	$19,60($sp)
lw	$18,56($sp)
lw	$17,52($sp)
lw	$16,48($sp)
move	$2,$0
j	$31
addiu	$sp,$sp,88

$L39:
lui	$6,%hi($LC0)
move	$4,$20
addiu	$6,$6,%lo($LC0)
jal	av_log
move	$5,$0

lw	$31,84($sp)
lw	$fp,80($sp)
lw	$23,76($sp)
lw	$22,72($sp)
lw	$21,68($sp)
lw	$20,64($sp)
lw	$19,60($sp)
lw	$18,56($sp)
lw	$17,52($sp)
lw	$16,48($sp)
li	$2,-1			# 0xffffffffffffffff
j	$31
addiu	$sp,$sp,88

$L18:
beq	$2,$0,$L21
li	$3,1			# 0x1

subu	$3,$0,$2
li	$2,65536			# 0x10000
ori	$2,$2,0x86a0
sw	$2,36($sp)
j	$L20
sw	$3,32($sp)

$L21:
li	$2,10			# 0xa
sw	$2,36($sp)
j	$L20
sw	$3,32($sp)

$L40:
li	$2,1			# 0x1
move	$4,$18
jal	get_be32
sw	$2,4($19)

move	$4,$18
jal	url_ftell
move	$16,$2

addu	$4,$2,$16
move	$17,$0
sltu	$6,$4,$2
addu	$5,$3,$17
addu	$5,$6,$5
sw	$5,28($19)
li	$6,16			# 0x10
move	$7,$0
sw	$4,24($19)
jal	url_fskip
move	$4,$18

jal	get_le32
move	$4,$18

move	$4,$20
move	$5,$0
jal	av_new_stream
move	$17,$2

beq	$2,$0,$L13
sw	$2,40($sp)

lw	$5,8($2)
move	$4,$18
jal	get_wav_header
move	$6,$17

$L27:
jal	url_ftell
move	$4,$18

move	$7,$3
lw	$3,28($19)
move	$6,$2
slt	$2,$7,$3
bne	$2,$0,$L32
move	$4,$18

beq	$3,$7,$L41
nop

$L29:
lw	$3,0($19)
lw	$11,40($sp)
addu	$2,$17,$3
addiu	$2,$2,-1
divu	$0,$2,$3
teq	$3,$0,7
lw	$4,8($11)
mflo	$2
sw	$2,8($19)
lw	$3,272($4)
beq	$3,$0,$L43
move	$4,$18

addu	$2,$2,$3
addiu	$2,$2,-1
div	$0,$2,$3
teq	$3,$0,7
mflo	$2
mul	$2,$3,$2
sw	$2,8($19)
$L43:
jal	url_ftell
sw	$17,12($19)

lw	$6,24($19)
lw	$7,28($19)
sw	$2,16($19)
sw	$3,20($19)
move	$4,$18
jal	url_fseek
sw	$0,16($sp)

j	$L42
lw	$2,36($sp)

$L41:
lw	$2,24($19)
sltu	$2,$6,$2
beq	$2,$0,$L29
nop

$L32:
jal	url_feof
nop

bne	$2,$0,$L29
move	$4,$18

jal	get_le32
nop

move	$4,$18
jal	get_le32
move	$16,$2

move	$17,$2
li	$2,1634992128			# 0x61740000
ori	$2,$2,0x6164
beq	$16,$2,$L29
move	$4,$18

move	$6,$17
jal	url_fskip
move	$7,$0

j	$L27
nop

.set	macro
.set	reorder
.end	dxa_read_header
.section	.rodata.str1.4
.align	2
$LC2:
.ascii	"Frame size is too big: %d\012\000"
.align	2
$LC3:
.ascii	"Unknown tag %c%c%c%c\012\000"
.section	.text.dxa_read_packet,"ax",@progbits
.align	2
.align	5
.ent	dxa_read_packet
.type	dxa_read_packet, @function
dxa_read_packet:
.frame	$sp,848,$31		# vars= 784, regs= 8/0, args= 32, gp= 0
.mask	0x807f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-848
sw	$22,840($sp)
sw	$19,828($sp)
sw	$31,844($sp)
sw	$21,836($sp)
sw	$20,832($sp)
sw	$18,824($sp)
sw	$17,820($sp)
sw	$16,816($sp)
lw	$17,12($4)
move	$19,$4
lw	$2,32($17)
bne	$2,$0,$L45
move	$22,$5

lw	$2,4($17)
bne	$2,$0,$L109
nop

$L45:
lw	$6,24($17)
lw	$7,28($17)
addiu	$16,$19,16
move	$4,$16
sw	$0,16($sp)
jal	url_fseek
move	$21,$0

addiu	$20,$sp,32
$L52:
jal	url_feof
move	$4,$16

move	$4,$16
move	$5,$20
bne	$2,$0,$L49
li	$6,4			# 0x4

lw	$2,0($17)
beq	$2,$0,$L49
nop

jal	get_buffer
nop

lbu	$11,35($sp)
lbu	$10,34($sp)
lbu	$9,33($sp)
sll	$2,$10,16
sll	$7,$11,24
lbu	$8,32($sp)
or	$7,$7,$2
or	$7,$7,$8
sll	$3,$9,8
li	$2,1296105472			# 0x4d410000
or	$3,$3,$7
ori	$2,$2,0x5246
move	$5,$20
li	$6,4			# 0x4
beq	$3,$2,$L56
addiu	$4,$sp,41

li	$2,1346437120			# 0x50410000
ori	$2,$2,0x4d43
beq	$3,$2,$L57
li	$2,1280049152			# 0x4c4c0000

ori	$2,$2,0x554e
beq	$3,$2,$L110
lui	$6,%hi($LC3)

move	$4,$19
addiu	$6,$6,%lo($LC3)
move	$7,$8
move	$5,$0
sw	$9,16($sp)
sw	$10,20($sp)
jal	av_log
sw	$11,24($sp)

li	$4,-1			# 0xffffffffffffffff
$L51:
lw	$31,844($sp)
lw	$22,840($sp)
lw	$21,836($sp)
lw	$20,832($sp)
lw	$19,828($sp)
lw	$18,824($sp)
lw	$17,820($sp)
lw	$16,816($sp)
move	$2,$4
j	$31
addiu	$sp,$sp,848

$L109:
lw	$2,12($17)
beq	$2,$0,$L45
li	$16,1			# 0x1

lw	$6,16($17)
lw	$7,20($17)
addiu	$19,$4,16
sw	$16,32($17)
move	$4,$19
jal	url_fseek
sw	$0,16($sp)

lw	$5,8($17)
lw	$3,12($17)
move	$18,$5
sltu	$2,$5,$3
movz	$18,$3,$2
move	$4,$19
move	$5,$22
jal	av_get_packet
move	$6,$18

bne	$18,$2,$L49
sw	$16,24($22)

lw	$2,12($17)
move	$4,$19
subu	$2,$2,$18
jal	url_ftell
sw	$2,12($17)

move	$4,$0
sw	$2,16($17)
j	$L51
sw	$3,20($17)

$L56:
move	$4,$16
addiu	$5,$sp,36
jal	get_buffer
li	$6,5			# 0x5

lbu	$3,37($sp)
lbu	$2,38($sp)
sll	$3,$3,24
sll	$2,$2,16
lbu	$4,39($sp)
lbu	$5,40($sp)
or	$3,$3,$2
or	$3,$3,$5
sll	$4,$4,8
or	$18,$4,$3
li	$2,16777216			# 0x1000000
sltu	$2,$18,$2
beq	$2,$0,$L99
lui	$6,%hi($LC2)

addiu	$5,$18,9
addu	$5,$21,$5
jal	av_new_packet
move	$4,$22

bltz	$2,$L58
move	$5,$20

lw	$4,16($22)
addu	$4,$21,$4
jal	memcpy
li	$6,9			# 0x9

lw	$5,16($22)
move	$4,$16
addu	$5,$21,$5
addiu	$5,$5,9
jal	get_buffer
move	$6,$18

bne	$18,$2,$L111
nop

beq	$21,$0,$L80
addiu	$5,$sp,41

lw	$4,16($22)
jal	memcpy
move	$6,$21

$L80:
sw	$0,24($22)
lw	$2,0($17)
move	$4,$16
addiu	$2,$2,-1
j	$L108
sw	$2,0($17)

$L57:
jal	memcpy
li	$21,772			# 0x304

move	$4,$16
addiu	$5,$sp,45
jal	get_buffer
li	$6,768			# 0x300

j	$L52
nop

$L110:
move	$4,$22
jal	av_new_packet
addiu	$5,$21,4

bltz	$2,$L51
li	$4,-12			# 0xfffffffffffffff4

bne	$21,$0,$L60
sw	$0,24($22)

move	$18,$0
lw	$4,16($22)
$L112:
move	$5,$20
addu	$4,$18,$4
jal	memcpy
li	$6,4			# 0x4

lw	$3,0($17)
move	$4,$16
addiu	$3,$3,-1
sw	$3,0($17)
$L108:
jal	url_ftell
nop

sw	$2,24($17)
sw	$3,28($17)
sw	$0,32($17)
move	$4,$0
lw	$31,844($sp)
lw	$22,840($sp)
lw	$21,836($sp)
lw	$20,832($sp)
lw	$19,828($sp)
lw	$18,824($sp)
lw	$17,820($sp)
lw	$16,816($sp)
move	$2,$4
j	$31
addiu	$sp,$sp,848

$L99:
move	$4,$19
move	$7,$18
addiu	$6,$6,%lo($LC2)
jal	av_log
move	$5,$0

li	$4,-1			# 0xffffffffffffffff
lw	$31,844($sp)
lw	$22,840($sp)
lw	$21,836($sp)
lw	$20,832($sp)
lw	$19,828($sp)
lw	$18,824($sp)
lw	$17,820($sp)
lw	$16,816($sp)
move	$2,$4
j	$31
addiu	$sp,$sp,848

$L60:
move	$18,$21
lw	$4,16($22)
addiu	$5,$sp,41
jal	memcpy
move	$6,$21

j	$L112
lw	$4,16($22)

$L49:
j	$L51
li	$4,-5			# 0xfffffffffffffffb

$L58:
j	$L51
li	$4,-12			# 0xfffffffffffffff4

$L111:
lw	$2,36($22)
beq	$2,$0,$L49
nop

jal	$2
move	$4,$22

j	$L51
li	$4,-5			# 0xfffffffffffffffb

.set	macro
.set	reorder
.end	dxa_read_packet
.globl	dxa_demuxer
.section	.rodata.str1.4
.align	2
$LC4:
.ascii	"dxa\000"
.data
.align	2
.type	dxa_demuxer, @object
.size	dxa_demuxer, 64
dxa_demuxer:
.word	$LC4
.word	$LC4
.word	40
.word	dxa_probe
.word	dxa_read_header
.word	dxa_read_packet
.space	40
.ident	"GCC: (GNU) 4.1.2"