decode.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 1,767 行 · 第 1/2 页

lbu	$4,-1($2)
addiu	$3,$3,%lo(mpeg2_seek_header)
sb	$4,17052($16)
li	$4,9			# 0x9
j	$L94
sw	$3,17028($16)

.set	macro
.set	reorder
.end	mpeg2_parse_header
.section	.text.mpeg2_parse,"ax",@progbits
.align	2
.align	5
.globl	mpeg2_parse
.ent	mpeg2_parse
.type	mpeg2_parse, @function
mpeg2_parse:
.frame	$sp,24,$31		# vars= 0, regs= 2/0, args= 16, gp= 0
.mask	0x80010000,-4
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

addiu	$sp,$sp,-24
sw	$16,16($sp)
sw	$31,20($sp)
lw	$2,17028($4)
beq	$2,$0,$L166
move	$16,$4

jal	$2
nop

bltz	$2,$L166
move	$5,$2

$L126:
lw	$31,20($sp)
lw	$16,16($sp)
move	$2,$5
j	$31
addiu	$sp,$sp,24

$L166:
lbu	$10,17092($16)
lbu	$9,17093($16)
$L176:
lbu	$3,17052($16)
subu	$2,$3,$10
sltu	$2,$2,$9
beq	$2,$0,$L177
addiu	$2,$3,-1

lw	$7,17048($16)
lw	$3,17040($16)
lw	$5,17584($16)
lw	$4,17588($16)
li	$2,1179648			# 0x120000
ori	$2,$2,0xa800
subu	$3,$3,$7
addu	$9,$3,$2
subu	$4,$4,$5
slt	$2,$9,$4
bne	$2,$0,$L128
move	$6,$7

beq	$4,$0,$L135
move	$11,$0

lw	$3,17020($16)
move	$11,$4
addu	$9,$5,$4
li	$10,256			# 0x100
$L132:
lbu	$2,0($5)
addiu	$5,$5,1
or	$7,$3,$2
beq	$3,$10,$L178
sltu	$8,$5,$9

sb	$2,0($6)
sll	$3,$7,8
bne	$8,$0,$L132
addiu	$6,$6,1

lw	$7,17048($16)
sw	$3,17020($16)
sw	$5,17584($16)
$L135:
lw	$2,17076($16)
addu	$7,$7,$11
addu	$2,$2,$4
sw	$2,17076($16)
sw	$7,17048($16)
move	$5,$0
lw	$31,20($sp)
lw	$16,16($sp)
move	$2,$5
j	$31
addiu	$sp,$sp,24

$L177:
sltu	$2,$2,175
beq	$2,$0,$L147
li	$2,179			# 0xb3

lw	$3,17584($16)
lw	$2,17588($16)
subu	$8,$2,$3
beq	$8,$0,$L149
move	$11,$3

lw	$4,17020($16)
addu	$6,$3,$8
li	$7,256			# 0x100
$L151:
lbu	$2,0($3)
addiu	$3,$3,1
or	$2,$4,$2
beq	$4,$7,$L179
sltu	$5,$3,$6

bne	$5,$0,$L151
sll	$4,$2,8

sw	$4,17020($16)
sw	$3,17584($16)
$L149:
lw	$2,17076($16)
move	$5,$0
addu	$2,$2,$8
sw	$2,17076($16)
lw	$31,20($sp)
lw	$16,16($sp)
move	$2,$5
j	$31
addiu	$sp,$sp,24

$L128:
beq	$9,$0,$L139
nop

lw	$2,17020($16)
addu	$8,$5,$9
li	$10,256			# 0x100
$L141:
lbu	$3,0($5)
addiu	$5,$5,1
or	$4,$2,$3
beq	$2,$10,$L180
sltu	$7,$5,$8

sb	$3,0($6)
sll	$2,$4,8
bne	$7,$0,$L141
addiu	$6,$6,1

sw	$2,17020($16)
sw	$5,17584($16)
$L139:
lw	$3,17076($16)
lui	$2,%hi(seek_chunk)
addiu	$2,$2,%lo(seek_chunk)
addu	$3,$3,$9
sw	$2,17028($16)
sw	$3,17076($16)
li	$5,9			# 0x9
lw	$31,20($sp)
lw	$16,16($sp)
move	$2,$5
j	$31
addiu	$sp,$sp,24

$L179:
li	$2,-256			# 0xffffffffffffff00
subu	$4,$3,$11
sw	$2,17020($16)
beq	$4,$0,$L149
sw	$3,17584($16)

lw	$2,17076($16)
addu	$2,$2,$4
sw	$2,17076($16)
lbu	$3,-1($3)
j	$L176
sb	$3,17052($16)

$L180:
lw	$3,17584($16)
addiu	$7,$6,1
li	$2,-256			# 0xffffffffffffff00
subu	$3,$5,$3
sw	$2,17020($16)
sw	$7,17048($16)
beq	$3,$0,$L139
sw	$5,17584($16)

$L136:
lw	$2,17076($16)
lbu	$5,17052($16)
addu	$2,$2,$3
lw	$6,17044($16)
sw	$2,17076($16)
jal	mpeg2_slice
move	$4,$16

lw	$2,17584($16)
lw	$4,17044($16)
lbu	$3,-1($2)
lbu	$10,17092($16)
lbu	$9,17093($16)
sb	$3,17052($16)
j	$L176
sw	$4,17048($16)

$L178:
lw	$3,17584($16)
addiu	$7,$6,1
li	$2,-256			# 0xffffffffffffff00
subu	$3,$5,$3
sw	$2,17020($16)
sw	$7,17048($16)
bne	$3,$0,$L136
sw	$5,17584($16)

j	$L135
lw	$7,17048($16)

$L147:
beq	$3,$2,$L158
sltu	$2,$3,180

beq	$2,$0,$L160
li	$2,183			# 0xb7

bne	$3,$0,$L181
lui	$2,%hi(seek_chunk)

lui	$2,%hi(mpeg2_header_picture_start)
lw	$5,17032($16)
addiu	$2,$2,%lo(mpeg2_header_picture_start)
j	$L126
sw	$2,17028($16)

$L156:
$L181:
addiu	$2,$2,%lo(seek_chunk)
li	$5,9			# 0x9
j	$L126
sw	$2,17028($16)

$L160:
beq	$3,$2,$L159
li	$2,184			# 0xb8

bne	$3,$2,$L156
lui	$2,%hi(seek_chunk)

$L158:
lui	$2,%hi(mpeg2_parse_header)
addiu	$2,$2,%lo(mpeg2_parse_header)
sw	$2,17028($16)
$L161:
lw	$2,17032($16)
li	$5,7			# 0x7
xori	$2,$2,0x7
li	$3,9			# 0x9
j	$L126
movn	$5,$3,$2

$L159:
lui	$2,%hi(mpeg2_header_end)
addiu	$2,$2,%lo(mpeg2_header_end)
j	$L161
sw	$2,17028($16)

.set	macro
.set	reorder
.end	mpeg2_parse
.section	.text.mpeg2_seek_header,"ax",@progbits
.align	2
.align	5
.globl	mpeg2_seek_header
.ent	mpeg2_seek_header
.type	mpeg2_seek_header, @function
mpeg2_seek_header:
.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
.mask	0x00000000,0
.fmask	0x00000000,0
.set	noreorder
.set	nomacro

lbu	$5,17052($4)
li	$2,179			# 0xb3
beq	$5,$2,$L183
move	$3,$5

li	$11,-1			# 0xffffffffffffffff
li	$12,179			# 0xb3
$L184:
addiu	$2,$3,73
andi	$2,$2,0x00ff
sltu	$2,$2,2
bne	$2,$0,$L194
nop

bne	$3,$0,$L185
nop

$L194:
lw	$2,17160($4)
bne	$2,$11,$L199
nop

$L185:
lw	$3,17584($4)
lw	$2,17588($4)
subu	$9,$2,$3
beq	$9,$0,$L186
move	$10,$3

lw	$5,17020($4)
addu	$7,$3,$9
li	$8,256			# 0x100
$L188:
lbu	$2,0($3)
addiu	$3,$3,1
or	$2,$5,$2
beq	$5,$8,$L203
sltu	$6,$3,$7

bne	$6,$0,$L188
sll	$5,$2,8

sw	$5,17020($4)
sw	$3,17584($4)
$L186:
lw	$3,17076($4)
move	$2,$0
addu	$3,$3,$9
j	$31
sw	$3,17076($4)

$L203:
li	$2,-256			# 0xffffffffffffff00
subu	$5,$3,$10
sw	$2,17020($4)
beq	$5,$0,$L186
sw	$3,17584($4)

lw	$2,17076($4)
addu	$2,$2,$5
sw	$2,17076($4)
lbu	$3,-1($3)
bne	$3,$12,$L184
sb	$3,17052($4)

$L199:
lbu	$5,17052($4)
$L183:
lw	$2,17040($4)
sw	$0,17096($4)
sw	$2,17044($4)
beq	$5,$0,$L196
sw	$2,17048($4)

j	mpeg2_parse_header
nop

$L196:
j	mpeg2_header_picture_start
nop

.set	macro
.set	reorder
.end	mpeg2_seek_header
.section	.text.mpeg2_init,"ax",@progbits
.align	2
.align	5
.globl	mpeg2_init
.ent	mpeg2_init
.type	mpeg2_init, @function
mpeg2_init:
.frame	$sp,32,$31		# vars= 0, regs= 3/0, args= 16, gp= 0
.mask	0x80030000,-8
.fmask	0x00000000,0
addiu	$sp,$sp,-32
sw	$16,16($sp)
lui	$16,%hi(mpeg2_accels)
sw	$31,24($sp)
sw	$17,20($sp)
.set	noreorder
.set	nomacro
jal	mpeg2_detect_accel
sw	$0,%lo(mpeg2_accels)($16)
.set	macro
.set	reorder

li	$3,-2147483648			# 0xffffffff80000000
or	$17,$2,$3
move	$4,$17
.set	noreorder
.set	nomacro
jal	mpeg2_cpu_state_init
sw	$17,%lo(mpeg2_accels)($16)
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
jal	mpeg2_idct_init
move	$4,$17
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
jal	mpeg2_mc_init
move	$4,$17
.set	macro
.set	reorder

li	$4,18128			# 0x46d0
.set	noreorder
.set	nomacro
jal	mpeg2_malloc
move	$5,$0
.set	macro
.set	reorder

.set	noreorder
.set	nomacro
beq	$2,$0,$L251
move	$16,$2
.set	macro
.set	reorder

addiu	$4,$2,208
move	$17,$2
li	$3,4			# 0x4
andi	$2,$4,0x3
subu	$3,$3,$2
li	$2,2			# 0x2
.set	noreorder
.set	nomacro
beq	$3,$2,$L210
addiu	$6,$16,336
.set	macro
.set	reorder

li	$2,3			# 0x3
.set	noreorder
.set	nomacro
beq	$3,$2,$L211
li	$2,1			# 0x1
.set	macro
.set	reorder

beq	$3,$2,$L252
$L208:
addiu	$5,$4,-4
move	$2,$0
#APP
.word	0b01110000000000100000000001101111	#S32I2M XR1,$2
#NO_APP
andi	$3,$4,0x1f
.set	noreorder
.set	nomacro
beq	$3,$0,$L256
addiu	$2,$6,-31
.set	macro
.set	reorder

li	$2,-32			# 0xffffffffffffffe0
and	$2,$5,$2
addiu	$4,$2,32
sltu	$3,$5,$4
.set	noreorder
.set	nomacro
beq	$3,$0,$L256
addiu	$2,$6,-31
.set	macro
.set	reorder

$L239:
#APP
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
#NO_APP
sltu	$2,$5,$4
.set	noreorder
.set	nomacro
bne	$2,$0,$L239
addiu	$2,$6,-31
.set	macro
.set	reorder

$L256:
li	$3,-32			# 0xffffffffffffffe0
and	$3,$2,$3
sltu	$4,$5,$3
.set	noreorder
.set	nomacro
beq	$4,$0,$L257
addiu	$2,$6,-4
.set	macro
.set	reorder

addiu	$2,$5,4
$L258:
#APP
pref 30,0($2)
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
#NO_APP
sltu	$2,$5,$3
.set	noreorder
.set	nomacro
bne	$2,$0,$L258
addiu	$2,$5,4
.set	macro
.set	reorder

addiu	$2,$6,-4
$L257:
li	$3,-4			# 0xfffffffffffffffc
and	$3,$2,$3
sltu	$4,$5,$3
beq	$4,$0,$L217
$L241:
#APP
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
#NO_APP
sltu	$2,$5,$3
bne	$2,$0,$L241
$L217:
andi	$3,$6,0x3
li	$2,2			# 0x2
.set	noreorder
.set	nomacro
beq	$3,$2,$L221
addiu	$4,$5,4
.set	macro
.set	reorder

li	$2,3			# 0x3
.set	noreorder
.set	nomacro
beq	$3,$2,$L222
li	$2,1			# 0x1
.set	macro
.set	reorder

beq	$3,$2,$L253
$L219:
addiu	$4,$16,17605
andi	$2,$4,0x3
li	$3,4			# 0x4
subu	$3,$3,$2
li	$2,2			# 0x2
.set	noreorder
.set	nomacro
beq	$3,$2,$L225
addiu	$6,$16,17861
.set	macro
.set	reorder

li	$2,3			# 0x3
.set	noreorder
.set	nomacro
beq	$3,$2,$L226
li	$2,1			# 0x1
.set	macro
.set	reorder

beq	$3,$2,$L254
$L223:
addiu	$5,$4,-4
move	$2,$0
#APP
.word	0b01110000000000100000000001101111	#S32I2M XR1,$2
#NO_APP
andi	$3,$4,0x1f
.set	noreorder
.set	nomacro
beq	$3,$0,$L259
addiu	$2,$6,-31
.set	macro
.set	reorder

li	$2,-32			# 0xffffffffffffffe0
and	$2,$5,$2
addiu	$4,$2,32
sltu	$3,$5,$4
.set	noreorder
.set	nomacro
beq	$3,$0,$L259
addiu	$2,$6,-31
.set	macro
.set	reorder

$L242:
#APP
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
#NO_APP
sltu	$2,$5,$4
.set	noreorder
.set	nomacro
bne	$2,$0,$L242
addiu	$2,$6,-31
.set	macro
.set	reorder

$L259:
li	$3,-32			# 0xffffffffffffffe0
and	$3,$2,$3
sltu	$4,$5,$3
.set	noreorder
.set	nomacro
beq	$4,$0,$L260
addiu	$2,$6,-4
.set	macro
.set	reorder

addiu	$2,$5,4
$L261:
#APP
pref 30,0($2)
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
#NO_APP
sltu	$2,$5,$3
.set	noreorder
.set	nomacro
bne	$2,$0,$L261
addiu	$2,$5,4
.set	macro
.set	reorder

addiu	$2,$6,-4
$L260:
li	$3,-4			# 0xfffffffffffffffc
and	$3,$2,$3
sltu	$4,$5,$3
beq	$4,$0,$L232
$L244:
#APP
.word	0b01110000101000000000010001010101	#S32SDI XR1,$5,4
#NO_APP
sltu	$2,$5,$3
bne	$2,$0,$L244
$L232:
andi	$3,$6,0x3
li	$2,2			# 0x2
.set	noreorder
.set	nomacro
beq	$3,$2,$L236
addiu	$4,$5,4
.set	macro
.set	reorder

li	$2,3			# 0x3
.set	noreorder
.set	nomacro
beq	$3,$2,$L237
li	$2,1			# 0x1
.set	macro
.set	reorder

beq	$3,$2,$L255
$L234:
li	$4,1179648			# 0x120000
li	$5,1			# 0x1
.set	noreorder
.set	nomacro
jal	mpeg2_malloc
ori	$4,$4,0xa804
.set	macro
.set	reorder

sw	$2,17040($16)
li	$2,-1			# 0xffffffffffffffff
sw	$2,17160($16)
lui	$2,%hi(mpeg2_seek_header)
li	$3,-256			# 0xffffffffffffff00
addiu	$2,$2,%lo(mpeg2_seek_header)
sw	$3,17020($16)
sw	$2,17028($16)
li	$3,9			# 0x9
li	$2,1			# 0x1
li	$4,-76
sw	$2,17080($16)
sb	$4,17052($16)
sw	$3,17032($16)
addiu	$4,$16,16976
sw	$0,17588($16)
sw	$0,17584($16)
.set	noreorder
.set	nomacro
jal	mpeg2_reset_info
sw	$0,17072($16)
.set	macro
.set	reorder

sw	$0,16980($16)
sw	$0,17012($16)
sw	$0,17016($16)
sw	$0,16976($16)
.set	noreorder
.set	nomacro
jal	mpeg2_header_state_init
move	$4,$16
.set	macro
.set	reorder

move	$2,$17
lw	$31,24($sp)
lw	$17,20($sp)
lw	$16,16($sp)
.set	noreorder
.set	nomacro
j	$31
addiu	$sp,$sp,32
.set	macro
.set	reorder

$L225:
addiu	$4,$16,17607
sb	$0,17605($16)
.set	noreorder
.set	nomacro
j	$L223
sb	$0,17606($16)
.set	macro
.set	reorder

$L210:
addiu	$4,$16,210
sb	$0,208($16)
.set	noreorder
.set	nomacro
j	$L208
sb	$0,209($16)
.set	macro
.set	reorder

$L221:
sb	$0,4($5)
.set	noreorder
.set	nomacro
j	$L219
sb	$0,1($4)
.set	macro
.set	reorder

$L236:
sb	$0,4($5)
.set	noreorder
.set	nomacro
j	$L234
sb	$0,1($4)
.set	macro
.set	reorder

$L211:
addiu	$4,$16,211
sb	$0,208($16)
sb	$0,209($16)
.set	noreorder
.set	nomacro
j	$L208
sb	$0,210($16)
.set	macro
.set	reorder

$L237:
sb	$0,6($5)
sb	$0,4($5)
.set	noreorder
.set	nomacro
j	$L234
sb	$0,5($5)
.set	macro
.set	reorder

$L226:
addiu	$4,$16,17608
sb	$0,17605($16)
sb	$0,17606($16)
.set	noreorder
.set	nomacro
j	$L223
sb	$0,17607($16)
.set	macro
.set	reorder

$L222:
sb	$0,6($5)
sb	$0,4($5)
.set	noreorder
.set	nomacro
j	$L219
sb	$0,5($5)
.set	macro
.set	reorder

$L253:
.set	noreorder
.set	nomacro
j	$L219
sb	$0,4($5)
.set	macro
.set	reorder

$L255:
.set	noreorder
.set	nomacro
j	$L234
sb	$0,4($5)
.set	macro
.set	reorder

$L254:
addiu	$4,$16,17606
.set	noreorder
.set	nomacro
j	$L223
sb	$0,17605($16)
.set	macro
.set	reorder

$L252:
addiu	$4,$16,209
.set	noreorder
.set	nomacro
j	$L208
sb	$0,208($16)
.set	macro
.set	reorder

$L251:
move	$17,$0
move	$2,$17
lw	$31,24($sp)
lw	$17,20($sp)
lw	$16,16($sp)
.set	noreorder
.set	nomacro
j	$31
addiu	$sp,$sp,32
.set	macro
.set	reorder

.end	mpeg2_init
.local	mpeg2_accels
.comm	mpeg2_accels,4,4
.rdata
.align	2
.type	process_header.3277, @object
.size	process_header.3277, 36
process_header.3277:
.word	mpeg2_header_picture
.word	mpeg2_header_extension
.word	mpeg2_header_user_data
.word	mpeg2_header_sequence
.word	0
.word	0
.word	0
.word	0
.word	mpeg2_header_gop
.ident	"GCC: (GNU) 4.1.2"