gxf.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 1,973 行 · 第 1/2 页

.file	1 "gxf.c"
.section .mdebug.abi32
.previous
.section	.text.parse_packet_header,"ax",@progbits
.align	2
.align	5
.ent	parse_packet_header
.type	parse_packet_header, @function
parse_packet_header:
.frame	$sp,32,$31		# vars= 0, regs= 4/0, args= 16, gp= 0
.mask	0x80070000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-32
sw	$18,24($sp)
sw	$17,20($sp)
sw	$16,16($sp)
sw	$31,28($sp)
move	$16,$4
move	$18,$6
jal	get_be32
move	$17,$5

beq	$2,$0,$L12
move	$4,$16

$L2:
move	$2,$0
$L9:
lw	$31,28($sp)
lw	$18,24($sp)
lw	$17,20($sp)
lw	$16,16($sp)
j	$31
addiu	$sp,$sp,32

$L12:
jal	get_byte
nop

li	$3,1			# 0x1
bne	$2,$3,$L2
move	$4,$16

jal	get_byte
nop

sw	$2,0($17)
jal	get_be32
move	$4,$16

move	$3,$2
sra	$2,$2,24
slt	$5,$3,16
bne	$2,$0,$L2
sw	$3,0($18)

addiu	$2,$3,-16
bne	$5,$0,$L2
move	$4,$16

jal	get_be32
sw	$2,0($18)

bne	$2,$0,$L2
move	$4,$16

jal	get_byte
nop

li	$3,225			# 0xe1
bne	$2,$3,$L2
move	$4,$16

jal	get_byte
nop

xori	$2,$2,0xe2
j	$L9
sltu	$2,$2,1

.set	macro
.set	reorder
.end	parse_packet_header
.section	.text.gxf_resync_media,"ax",@progbits
.align	2
.align	5
.ent	gxf_resync_media
.type	gxf_resync_media, @function
gxf_resync_media:
.frame	$sp,88,$31		# vars= 24, regs= 10/0, args= 24, gp= 0
.mask	0xc0ff0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-88
sw	$19,60($sp)
addiu	$19,$4,16
move	$4,$19
sw	$fp,80($sp)
sw	$23,76($sp)
sw	$22,72($sp)
sw	$21,68($sp)
sw	$20,64($sp)
sw	$17,52($sp)
sw	$16,48($sp)
sw	$31,84($sp)
sw	$18,56($sp)
lw	$fp,104($sp)
lw	$21,108($sp)
move	$16,$6
jal	get_be32
move	$17,$7

move	$20,$2
li	$3,-2147483648			# 0xffffffff80000000
move	$2,$0
move	$22,$0
move	$23,$0
sw	$2,32($sp)
sw	$3,36($sp)
$L41:
bne	$20,$0,$L48
addiu	$2,$16,-1

addiu	$4,$16,-1
$L49:
sltu	$2,$4,$16
addiu	$5,$17,-1
addu	$5,$2,$5
li	$2,-1			# 0xffffffffffffffff
move	$16,$4
beq	$4,$2,$L42
move	$17,$5

$L22:
jal	url_feof
move	$4,$19

bne	$2,$0,$L46
or	$2,$22,$23

jal	get_byte
move	$4,$19

move	$18,$2
move	$20,$2
li	$2,1			# 0x1
bne	$18,$2,$L41
nop

jal	url_ftell
move	$4,$19

li	$6,-5			# 0xfffffffffffffffb
move	$4,$19
li	$7,-1			# 0xffffffffffffffff
sw	$2,40($sp)
sw	$3,44($sp)
jal	url_fseek
sw	$18,16($sp)

move	$4,$19
addiu	$5,$sp,28
jal	parse_packet_header
addiu	$6,$sp,24

beq	$2,$0,$L30
lw	$3,28($sp)

li	$2,191			# 0xbf
beq	$3,$2,$L43
nop

$L30:
lw	$6,40($sp)
$L47:
lw	$7,44($sp)
$L51:
move	$4,$19
jal	url_fseek
sw	$0,16($sp)

beq	$20,$0,$L49
addiu	$4,$16,-1

addiu	$2,$16,-1
$L48:
sltu	$4,$2,$16
addiu	$3,$17,-1
addu	$3,$4,$3
move	$16,$2
li	$2,-1			# 0xffffffffffffffff
beq	$16,$2,$L45
move	$17,$3

$L18:
jal	url_feof
move	$4,$19

bne	$2,$0,$L46
or	$2,$22,$23

jal	get_byte
move	$4,$19

sll	$3,$20,8
j	$L41
or	$20,$3,$2

$L42:
bne	$5,$2,$L22
nop

$L16:
or	$2,$22,$23
$L46:
beq	$2,$0,$L50
lw	$2,32($sp)

move	$4,$19
move	$6,$22
move	$7,$23
jal	url_fseek
sw	$0,16($sp)

lw	$2,32($sp)
$L50:
lw	$3,36($sp)
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)
j	$31
addiu	$sp,$sp,88

$L45:
bne	$3,$2,$L18
or	$2,$22,$23

j	$L46
nop

$L43:
jal	get_byte
move	$4,$19

jal	get_byte
move	$4,$19

move	$4,$19
jal	get_be32
move	$18,$2

move	$4,$19
move	$3,$0
sw	$2,32($sp)
jal	url_ftell
sw	$3,36($sp)

addiu	$4,$2,-22
sltu	$6,$4,$2
addiu	$5,$3,-1
addu	$5,$6,$5
move	$22,$4
bltz	$fp,$L28
move	$23,$5

bne	$18,$fp,$L47
lw	$6,40($sp)

$L28:
bltz	$21,$L16
lw	$3,36($sp)

sra	$5,$21,31
slt	$2,$3,$5
bne	$2,$0,$L47
lw	$6,40($sp)

bne	$3,$5,$L46
or	$2,$22,$23

lw	$3,32($sp)
sltu	$2,$3,$21
beq	$2,$0,$L46
or	$2,$22,$23

j	$L51
lw	$7,44($sp)

.set	macro
.set	reorder
.end	gxf_resync_media
.section	.text.gxf_read_timestamp,"ax",@progbits
.align	2
.align	5
.ent	gxf_read_timestamp
.type	gxf_read_timestamp, @function
gxf_read_timestamp:
.frame	$sp,48,$31		# vars= 0, regs= 6/0, args= 24, gp= 0
.mask	0x801f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-48
sw	$31,44($sp)
sw	$20,40($sp)
sw	$19,36($sp)
sw	$18,32($sp)
sw	$17,28($sp)
move	$18,$6
sw	$16,24($sp)
lw	$7,4($18)
lw	$6,0($6)
addiu	$20,$4,16
move	$19,$4
move	$4,$20
lw	$16,64($sp)
lw	$17,68($sp)
jal	url_fseek
sw	$0,16($sp)

lw	$8,0($18)
lw	$9,4($18)
subu	$6,$16,$8
subu	$7,$17,$9
sltu	$2,$16,$6
subu	$2,$7,$2
move	$4,$19
move	$7,$2
li	$2,-1			# 0xffffffffffffffff
sw	$2,20($sp)
jal	gxf_resync_media
sw	$2,16($sp)

move	$4,$20
move	$16,$2
jal	url_ftell
move	$17,$3

sw	$2,0($18)
sw	$3,4($18)
move	$2,$16
move	$3,$17
lw	$31,44($sp)
lw	$20,40($sp)
lw	$19,36($sp)
lw	$18,32($sp)
lw	$17,28($sp)
lw	$16,24($sp)
j	$31
addiu	$sp,$sp,48

.set	macro
.set	reorder
.end	gxf_read_timestamp
.section	.text.gxf_seek,"ax",@progbits
.align	2
.align	5
.ent	gxf_seek
.type	gxf_seek, @function
gxf_seek:
.frame	$sp,48,$31		# vars= 0, regs= 6/0, args= 24, gp= 0
.mask	0x801f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-48
sll	$5,$5,2
sw	$20,40($sp)
sw	$31,44($sp)
sw	$19,36($sp)
sw	$18,32($sp)
sw	$17,28($sp)
sw	$16,24($sp)
addu	$5,$5,$4
lw	$2,100($5)
move	$20,$4
lw	$17,92($2)
lw	$16,88($2)
slt	$2,$7,$17
lw	$18,100($4)
move	$5,$17
bne	$2,$0,$L55
move	$4,$16

beq	$7,$17,$L70
sltu	$2,$6,$16

move	$16,$6
move	$17,$7
$L55:
subu	$6,$16,$4
sltu	$2,$16,$6
subu	$7,$17,$5
subu	$7,$7,$2
move	$4,$18
li	$2,5			# 0x5
jal	av_index_search_timestamp
sw	$2,16($sp)

bltz	$2,$L57
move	$6,$2

lw	$3,148($18)
sll	$4,$2,3
lw	$5,144($18)
sll	$2,$2,5
subu	$2,$2,$4
addiu	$3,$3,-2
addu	$4,$5,$2
slt	$3,$6,$3
lw	$8,0($4)
beq	$3,$0,$L71
lw	$9,4($4)

lw	$2,48($4)
lw	$3,52($4)
subu	$4,$2,$8
sltu	$6,$2,$4
subu	$5,$3,$9
subu	$5,$5,$6
move	$18,$4
bgtu	$5,$0,$L61
move	$19,$5

beq	$5,$0,$L72
li	$2,196608			# 0x30000

li	$18,196608			# 0x30000
$L74:
ori	$18,$18,0x2000
j	$L61
move	$19,$0

$L71:
li	$18,104857600			# 0x6400000
move	$19,$0
$L61:
move	$6,$8
move	$7,$9
addiu	$4,$20,16
jal	url_fseek
sw	$0,16($sp)

move	$4,$20
move	$6,$18
move	$7,$19
li	$2,-1			# 0xffffffffffffffff
sw	$2,16($sp)
jal	gxf_resync_media
sw	$16,20($sp)

subu	$4,$2,$16
sltu	$6,$2,$4
subu	$5,$3,$17
subu	$5,$5,$6
move	$7,$5
blez	$5,$L73
move	$6,$4

$L57:
lw	$31,44($sp)
$L77:
lw	$20,40($sp)
lw	$19,36($sp)
$L79:
lw	$18,32($sp)
lw	$17,28($sp)
lw	$16,24($sp)
li	$2,-1			# 0xffffffffffffffff
j	$31
addiu	$sp,$sp,48

$L73:
bne	$5,$0,$L75
subu	$2,$0,$6

bleu	$4,$0,$L76
subu	$3,$0,$7

$L64:
bgtz	$7,$L77
lw	$31,44($sp)

bne	$7,$0,$L78
lw	$20,40($sp)

sltu	$2,$6,5
beq	$2,$0,$L79
lw	$19,36($sp)

lw	$31,44($sp)
lw	$20,40($sp)
$L78:
lw	$19,36($sp)
lw	$18,32($sp)
lw	$17,28($sp)
lw	$16,24($sp)
move	$2,$0
j	$31
addiu	$sp,$sp,48

$L70:
bne	$2,$0,$L55
nop

move	$16,$6
j	$L55
move	$17,$7

$L72:
ori	$2,$2,0x2000
sltu	$2,$2,$4
bne	$2,$0,$L61
nop

j	$L74
li	$18,196608			# 0x30000

$L75:
subu	$3,$0,$7
$L76:
sltu	$4,$0,$2
subu	$3,$3,$4
move	$6,$2
j	$L64
move	$7,$3

.set	macro
.set	reorder
.end	gxf_seek
.section	.rodata.str1.4,"aMS",@progbits,1
.align	2
$LC0:
.ascii	"GXF: too many index entries %u (%x)\012\000"
.align	2
$LC1:
.ascii	"GXF: invalid index length\012\000"
.section	.text.gxf_read_index,"ax",@progbits
.align	2
.align	5
.ent	gxf_read_index
.type	gxf_read_index, @function
gxf_read_index:
.frame	$sp,88,$31		# vars= 8, regs= 10/0, args= 40, gp= 0
.mask	0xc0ff0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-88
sw	$31,84($sp)
sw	$23,76($sp)
sw	$22,72($sp)
sw	$21,68($sp)
sw	$18,56($sp)
sw	$17,52($sp)
sw	$16,48($sp)
sw	$fp,80($sp)
sw	$20,64($sp)
sw	$19,60($sp)
move	$17,$4
addiu	$22,$4,16
lw	$2,100($17)
move	$4,$22
move	$16,$5
jal	get_le32
sw	$2,40($sp)

move	$4,$22
jal	get_le32
move	$18,$2

move	$21,$2
sltu	$2,$2,1001
beq	$2,$0,$L81
addiu	$23,$16,-8

sll	$fp,$21,2
$L83:
sltu	$2,$23,$fp
beq	$2,$0,$L84
lw	$4,40($sp)

lui	$6,%hi($LC1)
move	$4,$17
addiu	$6,$6,%lo($LC1)
jal	av_log
move	$5,$0

move	$6,$23
sra	$7,$23,31
move	$4,$22
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)
j	url_fskip
addiu	$sp,$sp,88

$L84:
move	$6,$0
move	$7,$0
sw	$6,16($sp)
sw	$7,20($sp)
sw	$0,24($sp)
sw	$0,28($sp)
jal	av_add_index_entry
sw	$0,32($sp)

beq	$21,$0,$L86
move	$20,$0

move	$16,$18
move	$17,$0
li	$18,1			# 0x1
move	$19,$0
$L88:
jal	get_le32
move	$4,$22

move	$3,$0
srl	$4,$2,22
sll	$3,$3,10
or	$3,$4,$3
sll	$2,$2,10
lw	$4,40($sp)
move	$6,$2
move	$7,$3
sw	$18,16($sp)
sw	$19,20($sp)
sw	$0,24($sp)
sw	$0,28($sp)
jal	av_add_index_entry
sw	$0,32($sp)

addu	$4,$18,$16
sltu	$2,$4,$18
addu	$5,$19,$17
addu	$5,$2,$5
addiu	$20,$20,1
move	$18,$4
bne	$20,$21,$L88
move	$19,$5

$L86:
subu	$6,$23,$fp
move	$4,$22
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)
sra	$7,$6,31
j	url_fskip
addiu	$sp,$sp,88

$L81:
lui	$6,%hi($LC0)
move	$7,$21
addiu	$6,$6,%lo($LC0)
move	$4,$17
move	$5,$0
sw	$21,16($sp)
jal	av_log
li	$fp,4000			# 0xfa0

j	$L83
li	$21,1000			# 0x3e8

.set	macro
.set	reorder
.end	gxf_read_index
.section	.rodata.str1.4
.align	2
$LC2:
.ascii	"GXF: map packet not found\012\000"
.align	2
$LC3:
.ascii	"GXF: unknown version or invalid map preamble\012\000"
.align	2
$LC4:
.ascii	"GXF: material data longer than map data\012\000"
.align	2
$LC5:
.ascii	"GXF: track description longer than map data\012\000"
.align	2
$LC6:
.ascii	"GXF: invalid track type %x\012\000"
.align	2
$LC7:
.ascii	"GXF: invalid track id %x\012\000"
.align	2
$LC8:
.ascii	"GXF: invalid track description length specified\012\000"
.align	2
$LC9:
.ascii	"GXF: sync lost in header\012\000"
.align	2
$LC10:
.ascii	"GXF: UMF packet too short\012\000"
.align	2
$LC11:
.ascii	"GXF: UMF packet missing\012\000"
.section	.text.gxf_header,"ax",@progbits
.align	2
.align	5
.ent	gxf_header
.type	gxf_header, @function
gxf_header:
.frame	$sp,112,$31		# vars= 56, regs= 10/0, args= 16, gp= 0
.mask	0xc0ff0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-112
sw	$21,92($sp)
sw	$18,80($sp)
addiu	$21,$sp,16
addiu	$18,$4,16
sw	$20,88($sp)
move	$5,$21
move	$20,$4
addiu	$6,$sp,20
move	$4,$18
sw	$31,108($sp)
sw	$fp,104($sp)
sw	$23,100($sp)
sw	$22,96($sp)
sw	$19,84($sp)
sw	$17,76($sp)
jal	parse_packet_header
sw	$16,72($sp)

beq	$2,$0,$L94
lw	$3,16($sp)

li	$2,188			# 0xbc
beq	$3,$2,$L96
lw	$2,20($sp)

$L94:
lui	$6,%hi($LC2)
move	$4,$20
addiu	$6,$6,%lo($LC2)
jal	av_log
move	$5,$0

move	$2,$0
$L97:
lw	$31,108($sp)
lw	$fp,104($sp)
lw	$23,100($sp)
lw	$22,96($sp)
lw	$21,92($sp)
lw	$20,88($sp)
lw	$19,84($sp)
lw	$18,80($sp)
lw	$17,76($sp)
lw	$16,72($sp)
j	$31
addiu	$sp,$sp,112

$L96:
move	$4,$18
addiu	$2,$2,-2
jal	get_byte
sw	$2,20($sp)

li	$3,224			# 0xe0
beq	$2,$3,$L207
lui	$6,%hi($LC3)

$L226:
move	$4,$20
addiu	$6,$6,%lo($LC3)
jal	av_log
move	$5,$0

j	$L97
move	$2,$0

$L207:
jal	get_byte
move	$4,$18

li	$3,255			# 0xff
bne	$2,$3,$L226
lui	$6,%hi($LC3)

lw	$2,20($sp)
move	$4,$18
addiu	$2,$2,-2
jal	get_be16
sw	$2,20($sp)

lw	$3,20($sp)
move	$5,$2
sw	$2,24($sp)
slt	$2,$3,$2
bne	$2,$0,$L208
move	$4,$0

subu	$2,$3,$5
li	$5,-2147483648			# 0xffffffff80000000
sw	$4,48($sp)
sw	$5,52($sp)
sw	$4,40($sp)
sw	$5,44($sp)
sw	$2,20($sp)
$L205:
lw	$5,24($sp)
$L230:
slt	$2,$5,2
bne	$2,$0,$L227
move	$6,$5

$L104:
jal	get_byte
move	$4,$18

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

lw	$5,24($sp)
move	$3,$2
addiu	$5,$5,-2
slt	$2,$5,$2
bne	$2,$0,$L105
sw	$5,24($sp)

subu	$5,$5,$3
li	$2,4			# 0x4
beq	$3,$2,$L209
sw	$5,24($sp)

move	$6,$3
sra	$7,$3,31
jal	url_fskip
move	$4,$18

lw	$5,24($sp)
slt	$2,$5,2
beq	$2,$0,$L104
nop

$L105:
move	$6,$5
$L227:
sra	$7,$5,31
jal	url_fskip
move	$4,$18

lw	$2,20($sp)
move	$4,$18
addiu	$2,$2,-2
jal	get_be16
sw	$2,20($sp)

lw	$3,20($sp)
move	$5,$2
sw	$2,24($sp)
slt	$2,$3,$2
bne	$2,$0,$L210
lui	$6,%hi($LC5)

subu	$2,$3,$5
sw	$0,32($sp)
sw	$0,36($sp)
sw	$2,20($sp)
$L206:
lw	$2,24($sp)
$L221:
blez	$2,$L211
addiu	$5,$2,-4

move	$4,$18
jal	get_byte
sw	$5,24($sp)

move	$4,$18
jal	get_byte
move	$23,$2

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

move	$16,$2
lw	$2,24($sp)
lui	$3,%hi(ff_frame_rate_tab)
subu	$5,$2,$16
addiu	$fp,$3,%lo(ff_frame_rate_tab)
sw	$0,64($sp)
sw	$0,60($sp)
sw	$0,56($sp)
sw	$5,24($sp)
$L116:
slt	$2,$16,2
bne	$2,$0,$L228
move	$6,$16

jal	get_byte
move	$4,$18

move	$4,$18
move	$19,$2
jal	get_byte
addiu	$16,$16,-2

move	$17,$2
slt	$2,$16,$2
bne	$2,$0,$L118
li	$2,4			# 0x4

beq	$17,$2,$L212
move	$6,$17

sra	$7,$17,31
jal	url_fskip
move	$4,$18

$L127:
j	$L116
subu	$16,$16,$17

$L212:
jal	get_be32
move	$4,$18

move	$3,$2
li	$2,80			# 0x50
beq	$19,$2,$L213
li	$2,82			# 0x52

bne	$19,$2,$L127
addiu	$2,$3,-1

sltu	$2,$2,2
beq	$2,$0,$L127
nop

subu	$16,$16,$17
j	$L116
sw	$3,64($sp)

$L118:
move	$6,$16
$L228:
sra	$7,$16,31
jal	url_fskip
move	$4,$18

andi	$2,$23,0x80
beq	$2,$0,$L214
andi	$3,$22,0xc0

li	$2,192			# 0xc0
beq	$3,$2,$L132
lui	$6,%hi($LC7)