layer3.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 4,881 行 · 第 1/5 页

mult	$15,$13
#NO_APP
mfhi	$2
lw	$11,108($sp)
sll	$2,$2,4
sw	$2,356($sp)
mflo	$15
#APP
mult	$11,$13
#NO_APP
mfhi	$2
lw	$10,84($sp)
sll	$2,$2,4
sw	$2,368($sp)
mflo	$11
#APP
mult	$10,$12
#NO_APP
mfhi	$2
sw	$3,352($sp)
sw	$2,180($sp)
sll	$3,$2,4
li	$2,102694912			# 0x61f0000
lw	$8,40($sp)
mflo	$10
ori	$2,$2,0x78aa
#APP
mult	$8,$2
#NO_APP
mfhi	$2
sw	$3,364($sp)
sll	$3,$2,4
sw	$3,372($sp)
li	$3,247988224			# 0xec80000
lw	$9,64($sp)
sw	$2,164($sp)
ori	$3,$3,0x35e8
mflo	$8
#APP
mult	$9,$3
#NO_APP
mfhi	$2
lw	$7,112($sp)
sll	$2,$2,4
sw	$2,376($sp)
mflo	$9
#APP
mult	$7,$3
#NO_APP
mfhi	$2
lw	$6,88($sp)
sll	$2,$2,4
sw	$2,384($sp)
li	$2,102694912			# 0x61f0000
lw	$4,44($sp)
mflo	$7
ori	$2,$2,0x78aa
#APP
mult	$6,$2
#NO_APP
mfhi	$21
mflo	$6
#APP
mult	$4,$19
#NO_APP
mfhi	$2
li	$16,266076160			# 0xfdc0000
sll	$3,$2,4
sw	$3,388($sp)
li	$3,266076160			# 0xfdc0000
lw	$5,68($sp)
sw	$2,272($sp)
mflo	$4
ori	$3,$3,0xf549
ori	$16,$16,0xf549
#APP
mult	$5,$3
#NO_APP
lw	$3,116($sp)
mfhi	$2
mflo	$5
#APP
mult	$3,$16
#NO_APP
lw	$16,352($sp)
srl	$14,$14,28
or	$14,$16,$14
sll	$2,$2,4
sw	$2,392($sp)
mfhi	$20
lw	$2,92($sp)
sw	$14,200($sp)
lw	$23,364($sp)
lw	$17,356($sp)
srl	$10,$10,28
lw	$24,368($sp)
or	$10,$23,$10
mflo	$3
sll	$fp,$20,4
#APP
mult	$2,$19
#NO_APP
srl	$15,$15,28
mfhi	$20
mflo	$2
sw	$10,196($sp)
lw	$23,392($sp)
lw	$10,372($sp)
or	$15,$17,$15
srl	$11,$11,28
lw	$17,388($sp)
or	$14,$24,$11
srl	$2,$2,28
lw	$11,376($sp)
srl	$8,$8,28
srl	$4,$4,28
srl	$5,$5,28
sll	$20,$20,4
lw	$16,384($sp)
or	$8,$10,$8
or	$4,$17,$4
or	$5,$23,$5
srl	$6,$6,28
or	$20,$20,$2
srl	$9,$9,28
sll	$21,$21,4
li	$2,102694912			# 0x61f0000
sw	$8,192($sp)
sw	$4,288($sp)
sw	$5,396($sp)
lw	$4,136($sp)
lw	$5,12($sp)
or	$9,$11,$9
srl	$7,$7,28
srl	$3,$3,28
or	$21,$21,$6
ori	$2,$2,0x78aa
lw	$6,132($sp)
#APP
mult	$6,$12
#NO_APP
li	$12,266076160			# 0xfdc0000
mfhi	$11
mflo	$6
#APP
mult	$5,$13
#NO_APP
mfhi	$8
mflo	$5
#APP
mult	$4,$2
#NO_APP
li	$2,247988224			# 0xec80000
sw	$15,360($sp)
sw	$9,380($sp)
or	$15,$16,$7
or	$fp,$fp,$3
mfhi	$10
lw	$3,16($sp)
mflo	$4
ori	$2,$2,0x35e8
ori	$12,$12,0xf549
#APP
mult	$3,$2
#NO_APP
lw	$2,20($sp)
mfhi	$7
mflo	$3
#APP
mult	$2,$12
#NO_APP
mfhi	$9
mflo	$2
lw	$13,200($sp)
lw	$16,360($sp)
lw	$17,196($sp)
srl	$4,$4,28
srl	$3,$3,28
srl	$2,$2,28
sll	$10,$10,4
sll	$7,$7,4
sll	$9,$9,4
lw	$23,192($sp)
lw	$24,380($sp)
srl	$5,$5,28
or	$7,$7,$3
or	$10,$10,$4
lw	$3,396($sp)
lw	$4,556($sp)
or	$9,$9,$2
sll	$8,$8,4
lw	$2,288($sp)
addu	$12,$17,$14
srl	$6,$6,28
lw	$14,160($sp)
or	$8,$8,$5
sll	$11,$11,4
addu	$5,$13,$16
lw	$16,556($sp)
addu	$13,$2,$3
addu	$20,$20,$fp
addiu	$2,$4,12
addiu	$3,$4,16
or	$11,$11,$6
addiu	$4,$4,20
addu	$6,$23,$24
addu	$21,$21,$15
sw	$0,120($14)
sw	$0,12($16)
sw	$8,24($2)
sw	$5,48($2)
sw	$12,72($2)
sw	$11,96($2)
sw	$0,120($2)
sw	$0,16($16)
sw	$7,24($3)
sw	$6,48($3)
sw	$21,72($3)
sw	$10,96($3)
sw	$0,120($3)
sw	$0,20($16)
sw	$9,24($4)
sw	$13,48($4)
sw	$20,72($4)
lw	$2,140($sp)
#APP
mult	$2,$19
#NO_APP
mfhi	$3
mflo	$2
sll	$3,$3,4
srl	$2,$2,28
or	$3,$3,$2
sw	$3,96($4)
sw	$0,120($4)
lw	$fp,544($sp)
lw	$23,540($sp)
lw	$22,536($sp)
lw	$21,532($sp)
lw	$20,528($sp)
lw	$19,524($sp)
lw	$18,520($sp)
lw	$17,516($sp)
lw	$16,512($sp)
.set	noreorder
.set	nomacro
j	$31
addiu	$sp,$sp,552
.set	macro
.set	reorder

.end	III_imdct_s
.section	.rodata.str1.4,"aMS",@progbits,1
.align	2
$LC0:
.ascii	"-bits_left <= 8 * 8\000"
.align	2
$LC1:
.ascii	"libmad-0.15.1b/layer3.c\000"
.section	.rodata.cst4,"aM",@progbits,4
.align	2
$LC2:
.word	-1431655765
.section	.text.III_decode,"ax",@progbits
.align	2
.align	5
.ent	III_decode
.type	III_decode, @function
III_decode:
.frame	$sp,8176,$31		# vars= 8120, regs= 10/0, args= 16, gp= 0
.mask	0xc0ff0000,-4
.fmask	0x00000000,0
addiu	$sp,$sp,-8176
sw	$31,8172($sp)
sw	$fp,8168($sp)
sw	$23,8164($sp)
sw	$22,8160($sp)
sw	$21,8156($sp)
sw	$20,8152($sp)
sw	$19,8148($sp)
sw	$18,8144($sp)
sw	$17,8140($sp)
sw	$16,8136($sp)
sw	$5,8180($sp)
lw	$5,28($5)
lw	$3,8180($sp)
sw	$7,8188($sp)
andi	$2,$5,0x4000
sw	$4,8176($sp)
sw	$6,8184($sp)
.set	noreorder
.set	nomacro
beq	$2,$0,$L19
lw	$4,20($3)
.set	macro
.set	reorder

sll	$3,$4,1
srl	$2,$3,7
andi	$2,$2,0xf
srl	$3,$3,15
andi	$3,$3,0x1
addiu	$2,$2,-5
addu	$3,$3,$2
sw	$3,7624($sp)
$L21:
andi	$2,$5,0x1000
.set	noreorder
.set	nomacro
beq	$2,$0,$L22
li	$5,2			# 0x2
.set	macro
.set	reorder

li	$4,1			# 0x1
sw	$4,7620($sp)
$L24:
lw	$6,7624($sp)
lw	$7,8184($sp)
sll	$6,$6,4
addiu	$7,$7,10
sw	$0,7616($sp)
sw	$0,7504($sp)
sw	$6,8096($sp)
sw	$7,8100($sp)
$L25:
lw	$8,8188($sp)
.set	noreorder
.set	nomacro
beq	$8,$0,$L26
lw	$9,7624($sp)
.set	macro
.set	reorder

lw	$10,8096($sp)
sll	$9,$9,2
lui	$11,%hi(sfbwidth_table)
addiu	$3,$11,%lo(sfbwidth_table)
subu	$2,$10,$9
addu	$2,$2,$3
sw	$0,7432($sp)
lw	$2,0($2)
lw	$14,7432($sp)
sw	$2,7628($sp)
move	$22,$2
sll	$3,$14,5
sll	$2,$14,2
subu	$3,$3,$2
addu	$3,$3,$14
lw	$18,8100($sp)
sll	$3,$3,1
addiu	$12,$sp,16
addu	$3,$18,$3
addiu	$13,$sp,5124
sw	$9,8084($sp)
sw	$12,7516($sp)
sw	$13,7512($sp)
sw	$0,7508($sp)
sw	$3,7608($sp)
lbu	$2,9($3)
move	$21,$12
li	$23,2			# 0x2
.set	noreorder
.set	nomacro
beq	$2,$23,$L574
sw	$22,0($21)
.set	macro
.set	reorder

$L29:
lw	$9,8180($sp)
lw	$2,28($9)
andi	$2,$2,0x1000
.set	noreorder
.set	nomacro
beq	$2,$0,$L639
lw	$8,7616($sp)
.set	macro
.set	reorder

lw	$10,7432($sp)
$L647:
.set	noreorder
.set	nomacro
bne	$10,$0,$L36
lw	$12,8176($sp)
.set	macro
.set	reorder

lw	$13,7608($sp)
lw	$2,0($12)
lw	$3,4($12)
lbu	$4,9($13)
lw	$14,8180($sp)
sw	$2,24($sp)
sw	$3,28($sp)
li	$18,2			# 0x2
move	$fp,$0
lw	$5,8($14)
.set	noreorder
.set	nomacro
beq	$4,$18,$L39
lhu	$6,6($13)
.set	macro
.set	reorder

$L623:
move	$7,$0
$L41:
andi	$2,$5,0x1
.set	noreorder
.set	nomacro
beq	$2,$0,$L640
sltu	$2,$6,400
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
beq	$fp,$0,$L640
srl	$5,$6,1
.set	macro
.set	reorder

sltu	$2,$5,180
.set	noreorder
.set	nomacro
beq	$2,$0,$L60
sltu	$2,$5,244
.set	macro
.set	reorder

li	$2,954400768			# 0x38e30000
ori	$2,$2,0x8e39
multu	$5,$2
lui	$3,%hi(nsfb_table+36)
mfhi	$2
addiu	$3,$3,%lo(nsfb_table+36)
srl	$2,$2,3
sll	$4,$2,5
addu	$6,$7,$3
sll	$3,$2,2
addu	$3,$3,$4
li	$4,-1431699456			# 0xffffffffaaaa0000
subu	$3,$5,$3
ori	$4,$4,0xaaab
multu	$3,$4
sw	$2,56($sp)
mfhi	$5
sw	$0,68($sp)
srl	$5,$5,2
sll	$2,$5,3
sll	$4,$5,1
subu	$2,$2,$4
subu	$3,$3,$2
sw	$3,64($sp)
sw	$5,60($sp)
$L62:
addiu	$4,$sp,72
move	$19,$6
move	$22,$0
addiu	$23,$sp,56
sw	$4,8120($sp)
$L65:
lw	$21,0($23)
li	$2,1			# 0x1
lbu	$3,0($19)
sll	$2,$2,$21
.set	noreorder
.set	nomacro
beq	$3,$0,$L66
addiu	$20,$2,-1
.set	macro
.set	reorder

lw	$5,7608($sp)
addiu	$2,$22,16
addu	$3,$fp,$2
addu	$2,$5,$2
addiu	$17,$2,2
addiu	$16,$3,2
move	$18,$0
$L68:
lw	$4,8176($sp)
.set	noreorder
.set	nomacro
jal	mad_bit_read
move	$5,$21
.set	macro
.set	reorder

xor	$3,$20,$2
sltu	$3,$3,1
sb	$2,0($17)
sb	$3,0($16)
lbu	$2,0($19)
addiu	$18,$18,1
sltu	$2,$18,$2
addiu	$17,$17,1
.set	noreorder
.set	nomacro
bne	$2,$0,$L68
addiu	$16,$16,1
.set	macro
.set	reorder

addu	$22,$22,$18
$L66:
lw	$6,8120($sp)
addiu	$23,$23,4
.set	noreorder
.set	nomacro
bne	$23,$6,$L65
addiu	$19,$19,1
.set	macro
.set	reorder

sltu	$2,$22,39
.set	noreorder
.set	nomacro
beq	$2,$0,$L86
lw	$7,7608($sp)
.set	macro
.set	reorder

addiu	$2,$22,16
addu	$3,$fp,$2
addu	$2,$7,$2
addiu	$2,$2,2
addiu	$3,$3,2
li	$4,39			# 0x27
$L72:
addiu	$22,$22,1
sb	$0,0($2)
sb	$0,0($3)
addiu	$2,$2,1
.set	noreorder
.set	nomacro
bne	$22,$4,$L72
addiu	$3,$3,1
.set	macro
.set	reorder

$L86:
lw	$5,8176($sp)
$L634:
.set	noreorder
.set	nomacro
jal	mad_bit_length
addiu	$4,$sp,24
.set	macro
.set	reorder

lw	$25,7608($sp)
move	$5,$2
lhu	$2,0($25)
lw	$3,7516($sp)
subu	$16,$2,$5
.set	noreorder
.set	nomacro
bltz	$16,$L99
lw	$21,0($3)
.set	macro
.set	reorder

$L599:
lhu	$4,4($25)
lbu	$6,8($25)
lbu	$5,9($25)
andi	$3,$6,0x2
li	$8,2			# 0x2
li	$2,1			# 0x1
addiu	$7,$4,-210
li	$4,2			# 0x2
.set	noreorder
.set	nomacro
beq	$5,$4,$L575
movz	$8,$2,$3
.set	macro
.set	reorder

andi	$2,$6,0x4
.set	noreorder
.set	nomacro
beq	$2,$0,$L117
lw	$3,7608($sp)
.set	macro
.set	reorder

lui	$2,%hi(pretab)
lui	$3,%hi(pretab+22)
lw	$4,7608($sp)
addiu	$5,$2,%lo(pretab)
addiu	$9,$3,%lo(pretab+22)
addiu	$6,$sp,360
$L119:
lbu	$2,18($4)
lbu	$3,0($5)
addiu	$5,$5,1
addu	$2,$2,$3
sll	$2,$2,$8
subu	$2,$7,$2
sw	$2,0($6)
addiu	$4,$4,1
.set	noreorder
.set	nomacro
bne	$5,$9,$L119
addiu	$6,$6,4
.set	macro
.set	reorder

$L113:
lw	$13,8176($sp)
$L633:
move	$5,$16
lw	$2,0($13)
lw	$3,4($13)
move	$4,$13
sw	$2,24($sp)
.set	noreorder
.set	nomacro
jal	mad_bit_skip
sw	$3,28($sp)
.set	macro
.set	reorder

lhu	$4,30($sp)
li	$2,31			# 0x1f
li	$3,-8			# 0xfffffffffffffff8
subu	$2,$2,$4
and	$2,$2,$3
addu	$17,$4,$2
move	$5,$17
.set	noreorder
.set	nomacro
jal	mad_bit_read
addiu	$4,$sp,24
.set	macro
.set	reorder

lw	$14,7608($sp)
move	$19,$2
lbu	$2,10($14)
lui	$18,%hi(mad_huff_pair_table)
sll	$2,$2,3
addiu	$3,$18,%lo(mad_huff_pair_table)
addu	$2,$2,$3
lw	$20,0($2)
lhu	$8,6($2)
lbu	$4,0($21)
lbu	$5,16($14)
.set	noreorder
.set	nomacro
beq	$20,$0,$L121
lhu	$7,4($2)
.set	macro
.set	reorder

lw	$22,7512($sp)
lhu	$3,2($14)
addiu	$21,$21,1
sll	$2,$4,2
addiu	$18,$22,-2304
sw	$21,7572($sp)
subu	$fp,$16,$17
addu	$22,$2,$18
lw	$21,360($sp)
.set	noreorder
.set	nomacro
beq	$3,$0,$L576
addiu	$23,$3,-1
.set	macro
.set	reorder

addu	$6,$17,$fp
.set	noreorder
.set	nomacro
blez	$6,$L577
addiu	$2,$sp,364
.set	macro
.set	reorder

addiu	$5,$5,1
sw	$5,7584($sp)
sw	$7,7588($sp)
sw	$8,7592($sp)
sw	$2,7576($sp)
sw	$0,7580($sp)
move	$10,$0
$L128:
.set	noreorder
.set	nomacro
beq	$18,$22,$L578
lw	$3,7584($sp)
.set	macro
.set	reorder

$L129:
slt	$2,$17,21
.set	noreorder
.set	nomacro
bne	$2,$0,$L579
li	$16,31			# 0x1f
.set	macro
.set	reorder

$L138:
lw	$14,7592($sp)
li	$25,1			# 0x1
subu	$4,$17,$14
sll	$2,$25,$14
addiu	$2,$2,-1
srl	$3,$19,$4
and	$3,$3,$2
sll	$3,$3,1
addu	$16,$20,$3
lhu	$2,0($16)
andi	$2,$2,0x1
bne	$2,$0,$L140
move	$5,$4
li	$6,1			# 0x1
$L142:
lhu	$3,0($16)
move	$17,$5
srl	$2,$3,1
andi	$2,$2,0x7
sll	$4,$6,$2
subu	$5,$5,$2
addiu	$4,$4,-1
srl	$2,$19,$5
and	$2,$2,$4
srl	$3,$3,4
addu	$3,$3,$2
sll	$3,$3,1
addu	$16,$20,$3
lhu	$2,0($16)
andi	$2,$2,0x1
beq	$2,$0,$L142
$L140:
lhu	$3,0($16)
srl	$2,$3,1
andi	$2,$2,0x7
subu	$17,$17,$2
lw	$2,7588($sp)
.set	noreorder
.set	nomacro
beq	$2,$0,$L143
srl	$2,$3,4
.set	macro
.set	reorder

andi	$4,$2,0xf
.set	noreorder
.set	nomacro
beq	$4,$0,$L146
li	$2,15			# 0xf
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
beq	$4,$2,$L580
li	$9,1			# 0x1
.set	macro
.set	reorder

sll	$6,$9,$4
and	$2,$10,$6
.set	noreorder
.set	nomacro
beq	$2,$0,$L162
sll	$2,$4,2
.set	macro
.set	reorder

addiu	$3,$sp,16
addu	$2,$2,$3
lw	$4,56($2)
$L160:
addiu	$17,$17,-1
li	$5,1			# 0x1
sll	$2,$5,$17
and	$2,$19,$2
subu	$3,$0,$4
movn	$4,$3,$2
sw	$4,0($18)
$L148:
lhu	$2,0($16)
srl	$2,$2,8
andi	$4,$2,0xf
.set	noreorder
.set	nomacro
beq	$4,$0,$L569
li	$2,15			# 0xf
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
beq	$4,$2,$L581
li	$9,1			# 0x1
.set	macro
.set	reorder

sll	$6,$9,$4
and	$2,$10,$6
.set	noreorder
.set	nomacro
beq	$2,$0,$L194
sll	$2,$4,2
.set	macro
.set	reorder

addiu	$3,$sp,16
addu	$2,$2,$3
lw	$4,56($2)
$L232:
addiu	$17,$17,-1
li	$5,1			# 0x1
sll	$2,$5,$17
and	$2,$19,$2
subu	$3,$0,$4
movn	$4,$3,$2
addiu	$23,$23,-1
li	$2,-1			# 0xffffffffffffffff
sw	$4,4($18)
.set	noreorder
.set	nomacro
beq	$23,$2,$L492
addiu	$18,$18,8
.set	macro
.set	reorder

$L594:
addu	$6,$fp,$17
bgtz	$6,$L128
$L125:
.set	noreorder
.set	nomacro
bltz	$6,$L250
li	$2,568			# 0x238
.set	macro
.set	reorder

lw	$7,7608($sp)
$L643:
lui	$2,%hi(mad_huff_quad_table)
lbu	$3,8($7)
addiu	$2,$2,%lo(mad_huff_quad_table)
andi	$3,$3,0x1
sll	$3,$3,2
addu	$3,$3,$2
li	$8,-2147483648			# 0xffffffff80000000
ori	$8,$8,0x3
lw	$3,0($3)
and	$7,$21,$8
.set	noreorder
.set	nomacro
bltz	$7,$L582
sw	$3,7596($sp)
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
bltz	$21,$L583
move	$3,$21
.set	macro
.set	reorder

$L252:
lui	$4,%hi(rq_table+4)
lw	$5,%lo(rq_table+4)($4)
sra	$3,$3,2
srl	$2,$5,27
li	$9,134152192			# 0x7ff0000
ori	$9,$9,0xffff
addu	$3,$3,$2
.set	noreorder
.set	nomacro
bltz	$3,$L584
and	$4,$5,$9
.set	macro
.set	reorder

slt	$2,$3,5
.set	noreorder
.set	nomacro
bne	$2,$0,$L257
sll	$16,$4,$3
.set	macro
.set	reorder

li	$2,2147418112			# 0x7fff0000
ori	$16,$2,0xffff
$L257:
.set	noreorder
.set	nomacro
beq	$7,$0,$L260
sll	$2,$7,2
.set	macro
.set	reorder

lui	$10,%hi(root_table)
addiu	$10,$10,%lo(root_table)
addu	$2,$2,$10
lw	$3,12($2)
#APP
mult	$16,$3
#NO_APP
mfhi	$4
mflo	$3
sll	$4,$4,4
srl	$3,$3,28
or	$16,$4,$3
$L260:
.set	noreorder
.set	nomacro
beq	$6,$0,$L262
lw	$2,7512($sp)
.set	macro
.set	reorder

addiu	$23,$2,-16
sltu	$2,$23,$18
.set	noreorder
.set	nomacro
bne	$2,$0,$L641
subu	$2,$0,$fp
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
j	$L264
li	$20,1			# 0x1
.set	macro
.set	reorder

$L588:
$L285:
andi	$2,$6,0x20
.set	noreorder
.set	nomacro
bne	$2,$0,$L288
sw	$3,0($18)
.set	macro
.set	reorder

$L589:
move	$3,$0
$L290:
addiu	$2,$18,8
.set	noreorder
.set	nomacro
beq	$22,$2,$L585
sw	$3,4($18)
.set	macro
.set	reorder

$L293:
andi	$2,$6,0x40
bne	$2,$0,$L307
$L593:
move	$3,$0
$L309:
andi	$2,$6,0x80
.set	noreorder
.set	nomacro
beq	$2,$0,$L314
sw	$3,8($18)
.set	macro
.set	reorder

addiu	$17,$17,-1
sll	$2,$20,$17
and	$2,$19,$2