ac3_parser.s

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,图片解码,浏览,电子书,录音,想学ucos,识货的人就下吧 russblock fmradio explore set

.file	1 "ac3_parser.c"
.section .mdebug.abi32
.previous
.section	.text.ac3_parse_init,"ax",@progbits
.align	2
.align	5
.ent	ac3_parse_init
.type	ac3_parse_init, @function
ac3_parse_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	$3,0($4)
lui	$2,%hi(ac3_sync)
addiu	$2,$2,%lo(ac3_sync)
sw	$2,12($3)
li	$2,7			# 0x7
addiu	$4,$3,16
sw	$2,8($3)
move	$2,$0
j	$31
sw	$4,0($3)

.set	macro
.set	reorder
.end	ac3_parse_init
.section	.text.ff_ac3_parse_header,"ax",@progbits
.align	2
.align	5
.globl	ff_ac3_parse_header
.ent	ff_ac3_parse_header
.type	ff_ac3_parse_header, @function
ff_ac3_parse_header:
.frame	$sp,32,$31		# vars= 0, regs= 3/0, args= 16, gp= 0
.mask	0x80030000,-8
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-32
sw	$17,20($sp)
move	$17,$5
sw	$16,16($sp)
move	$5,$0
move	$16,$4
li	$6,24			# 0x18
sw	$31,24($sp)
jal	memset
move	$4,$17

lbu	$3,0($16)
lbu	$2,1($16)
sll	$3,$3,24
sll	$2,$2,16
or	$3,$3,$2
srl	$3,$3,16
li	$2,2935			# 0xb77
beq	$3,$2,$L4
sh	$3,0($17)

li	$2,-1			# 0xffffffffffffffff
$L6:
lw	$31,24($sp)
lw	$17,20($sp)
lw	$16,16($sp)
j	$31
addiu	$sp,$sp,32

$L4:
lbu	$2,5($16)
addiu	$4,$16,6
srl	$2,$2,3
sltu	$3,$2,11
sb	$2,6($17)
bne	$3,$0,$L7
addiu	$6,$16,7

j	$L6
li	$2,-2			# 0xfffffffffffffffe

$L7:
lbu	$2,2($16)
lbu	$3,3($16)
sll	$2,$2,24
sll	$3,$3,16
or	$2,$2,$3
srl	$2,$2,16
sh	$2,2($17)
lbu	$3,4($16)
li	$2,3			# 0x3
srl	$3,$3,6
bne	$3,$2,$L9
sb	$3,4($17)

j	$L6
li	$2,-3			# 0xfffffffffffffffd

$L9:
lbu	$2,4($16)
andi	$2,$2,0x3f
sltu	$3,$2,38
beq	$3,$0,$L28
sb	$2,5($17)

lbu	$2,5($16)
move	$5,$4
andi	$2,$2,0x7
sb	$2,7($17)
lbu	$3,6($16)
addiu	$11,$16,8
srl	$3,$3,5
andi	$2,$3,0x1
sb	$3,8($17)
bne	$2,$0,$L13
addiu	$9,$16,9

li	$7,51			# 0x33
li	$8,3			# 0x3
$L15:
lbu	$10,8($17)
andi	$2,$10,0x4
beq	$2,$0,$L30
li	$2,2			# 0x2

lbu	$2,0($4)
lbu	$4,0($6)
lbu	$3,0($11)
lbu	$5,0($9)
sll	$2,$2,24
sll	$4,$4,16
or	$2,$2,$4
or	$2,$2,$5
sll	$3,$3,8
or	$3,$3,$2
sll	$3,$3,$8
addiu	$7,$7,2
srl	$3,$3,30
sb	$3,10($17)
andi	$8,$7,0x7
li	$2,2			# 0x2
$L30:
beq	$10,$2,$L21
sra	$2,$7,3

addu	$5,$16,$2
andi	$4,$7,0x7
$L18:
lbu	$2,0($5)
lbu	$5,6($17)
sll	$2,$2,$4
andi	$2,$2,0x00ff
srl	$2,$2,7
sltu	$3,$5,9
beq	$3,$0,$L23
sb	$2,12($17)

move	$11,$0
move	$9,$0
$L25:
lbu	$3,5($17)
lui	$2,%hi(ff_ac3_bitratetab)
andi	$5,$3,0xfe
addiu	$2,$2,%lo(ff_ac3_bitratetab)
lbu	$6,4($17)
sll	$4,$3,1
addu	$5,$5,$2
addu	$4,$4,$3
lui	$2,%hi(ff_ac3_freqs)
addu	$4,$4,$6
addiu	$2,$2,%lo(ff_ac3_freqs)
sll	$6,$6,1
lhu	$8,0($5)
addu	$6,$6,$2
lui	$2,%hi(ff_ac3_frame_sizes)
addiu	$2,$2,%lo(ff_ac3_frame_sizes)
sll	$4,$4,1
lui	$3,%hi(ff_ac3_channels)
sll	$7,$8,2
sll	$5,$8,7
addu	$4,$4,$2
addiu	$3,$3,%lo(ff_ac3_channels)
subu	$5,$5,$7
addu	$3,$10,$3
lhu	$2,0($4)
addu	$5,$5,$8
lhu	$7,0($6)
lbu	$8,0($3)
lbu	$4,12($17)
sll	$2,$2,1
andi	$3,$11,0x00ff
sll	$5,$5,3
sra	$7,$7,$9
sra	$5,$5,$3
addu	$8,$8,$4
sh	$2,22($17)
move	$2,$0
sb	$11,13($17)
sh	$7,14($17)
sw	$5,16($17)
j	$L6
sb	$8,20($17)

$L13:
li	$2,1			# 0x1
beq	$3,$2,$L29
li	$7,53			# 0x35

lbu	$2,6($16)
srl	$2,$2,3
andi	$2,$2,0x3
li	$8,5			# 0x5
j	$L15
sb	$2,9($17)

$L28:
j	$L6
li	$2,-4			# 0xfffffffffffffffc

$L29:
lbu	$10,8($17)
j	$L18
li	$4,3			# 0x3

$L23:
addiu	$2,$5,-8
andi	$9,$2,0x00ff
j	$L25
move	$11,$9

$L21:
sra	$4,$7,3
addu	$4,$16,$4
lbu	$3,0($4)
lbu	$5,1($4)
lbu	$6,3($4)
lbu	$2,2($4)
sll	$5,$5,16
sll	$3,$3,24
or	$3,$3,$5
or	$3,$3,$6
sll	$2,$2,8
or	$2,$2,$3
addiu	$4,$7,2
sra	$3,$4,3
sll	$2,$2,$8
srl	$2,$2,30
addu	$5,$16,$3
andi	$4,$4,0x7
j	$L18
sb	$2,11($17)

.set	macro
.set	reorder
.end	ff_ac3_parse_header
.section	.text.ac3_sync,"ax",@progbits
.align	2
.align	5
.ent	ac3_sync
.type	ac3_sync, @function
ac3_sync:
.frame	$sp,64,$31		# vars= 24, regs= 6/0, args= 16, gp= 0
.mask	0x801f0000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-64
sw	$20,56($sp)
move	$20,$5
addiu	$5,$sp,16
sw	$19,52($sp)
sw	$18,48($sp)
sw	$17,44($sp)
sw	$16,40($sp)
sw	$31,60($sp)
move	$17,$6
move	$19,$7
move	$16,$4
jal	ff_ac3_parse_header
lw	$18,80($sp)

bltz	$2,$L46
move	$3,$2

lbu	$3,22($sp)
$L49:
sltu	$2,$3,11
bne	$2,$0,$L47
lhu	$2,30($sp)

addiu	$2,$3,-11
sltu	$2,$2,6
beq	$2,$0,$L34
addiu	$5,$16,2

lbu	$2,2($16)
lbu	$4,1($5)
sll	$2,$2,24
sll	$4,$4,16
lbu	$6,3($5)
lbu	$3,2($5)
or	$2,$2,$4
or	$2,$2,$6
sll	$3,$3,8
or	$7,$3,$2
srl	$4,$7,30
bne	$4,$0,$L34
sll	$2,$7,2

srl	$2,$2,29
bne	$2,$0,$L34
nop

lbu	$2,4($16)
lbu	$4,5($16)
lbu	$5,7($16)
sll	$2,$2,24
sll	$4,$4,16
lbu	$3,6($16)
or	$2,$2,$4
or	$2,$2,$5
sll	$3,$3,8
or	$6,$3,$2
srl	$3,$6,30
li	$2,3			# 0x3
beq	$3,$2,$L48
addiu	$5,$16,4

lui	$2,%hi(ff_ac3_freqs)
addiu	$2,$2,%lo(ff_ac3_freqs)
sll	$3,$3,1
addu	$3,$3,$2
lhu	$4,0($3)
sll	$2,$6,2
sw	$4,0($17)
srl	$3,$2,30
$L44:
lui	$2,%hi(eac3_blocks)
addiu	$2,$2,%lo(eac3_blocks)
addu	$2,$3,$2
lbu	$6,0($2)
lbu	$3,0($5)
sll	$6,$6,8
sw	$6,0($18)
lw	$4,0($17)
sll	$7,$7,5
srl	$7,$7,21
addiu	$7,$7,1
sll	$4,$4,4
mul	$4,$7,$4
srl	$5,$3,1
divu	$0,$4,$6
teq	$6,$0,7
lui	$2,%hi(ff_ac3_channels)
addiu	$2,$2,%lo(ff_ac3_channels)
andi	$5,$5,0x7
addu	$5,$5,$2
sll	$3,$3,7
lbu	$2,0($5)
andi	$3,$3,0x00ff
sltu	$3,$0,$3
addu	$3,$3,$2
sll	$7,$7,1
move	$2,$7
mflo	$4
sw	$4,0($19)
sw	$3,0($20)
lw	$31,60($sp)
lw	$20,56($sp)
lw	$19,52($sp)
lw	$18,48($sp)
lw	$17,44($sp)
lw	$16,40($sp)
j	$31
addiu	$sp,$sp,64

$L47:
lw	$3,32($sp)
lbu	$4,36($sp)
sw	$2,0($17)
li	$2,1536			# 0x600
sw	$3,0($19)
lhu	$7,38($sp)
sw	$4,0($20)
sw	$2,0($18)
lw	$31,60($sp)
lw	$20,56($sp)
lw	$19,52($sp)
lw	$18,48($sp)
lw	$17,44($sp)
lw	$16,40($sp)
move	$2,$7
j	$31
addiu	$sp,$sp,64

$L46:
li	$2,-2			# 0xfffffffffffffffe
beq	$3,$2,$L49
lbu	$3,22($sp)

$L34:
move	$7,$0
lw	$31,60($sp)
lw	$20,56($sp)
lw	$19,52($sp)
lw	$18,48($sp)
lw	$17,44($sp)
lw	$16,40($sp)
move	$2,$7
j	$31
addiu	$sp,$sp,64

$L48:
sll	$2,$6,2
srl	$2,$2,30
beq	$2,$3,$L34
lui	$3,%hi(ff_ac3_freqs)

addiu	$3,$3,%lo(ff_ac3_freqs)
sll	$2,$2,1
addu	$2,$2,$3
lhu	$4,0($2)
li	$3,3			# 0x3
srl	$4,$4,1
j	$L44
sw	$4,0($17)

.set	macro
.set	reorder
.end	ac3_sync
.globl	ac3_parser
.data
.align	2
.type	ac3_parser, @object
.size	ac3_parser, 44
ac3_parser:
.word	86020
.space	16
.word	8208
.word	ac3_parse_init
.word	ff_aac_ac3_parse
.word	0
.space	8
.rdata
.align	2
.type	eac3_blocks, @object
.size	eac3_blocks, 4
eac3_blocks:
.byte	1
.byte	2
.byte	3
.byte	6
.ident	"GCC: (GNU) 4.1.2"