ebml.mid

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」· MID 代码 · 共 3,072 行 · 第 1/3 页

	.file	1 "ebml.c"
	.section .mdebug.abi32
	.previous
	.section	.text.ebml_read_vlen_uint,"ax",@progbits
	.align	2
	.align	5
	.globl	ebml_read_vlen_uint
	.ent	ebml_read_vlen_uint
	.type	ebml_read_vlen_uint, @function
ebml_read_vlen_uint:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	lbu	$6,0($4)
	move	$3,$0
	andi	$2,$6,0x80
	or	$2,$2,$3
	move	$11,$4
	bne	$2,$0,$L30
	move	$7,$0

	andi	$2,$6,0x40
	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L31
	andi	$2,$6,0x20

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L32
	andi	$2,$6,0x10

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L33
	andi	$2,$6,0x8

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L34
	andi	$2,$6,0x4

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L35
	andi	$2,$6,0x2

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L36
	andi	$2,$6,0x1

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L37
	li	$10,7			# 0x7

$L17:
	li	$8,-1			# 0xffffffffffffffff
	li	$9,-1			# 0xffffffffffffffff
	move	$2,$8
	j	$31
	move	$3,$9

$L30:
	move	$10,$0
	li	$4,128			# 0x80
$L4:
	beq	$5,$0,$L19
	addiu	$14,$10,1

	sw	$14,0($5)
$L19:
	addiu	$4,$4,-1
	and	$8,$6,$4
	sra	$3,$4,31
	xor	$4,$4,$8
	sltu	$4,$4,1
	li	$12,-1			# 0xffffffffffffffff
	addiu	$10,$10,-1
	addiu	$5,$11,1
	and	$9,$7,$3
	li	$13,255			# 0xff
	srl	$2,$8,24
	beq	$10,$12,$L38
	addiu	$11,$4,1

$L22:
	sll	$7,$9,8
	or	$7,$2,$7
	lbu	$2,0($5)
	sll	$6,$8,8
	or	$8,$6,$2
	andi	$2,$8,0xff
	move	$3,$0
	beq	$13,$2,$L39
	move	$9,$7

	addiu	$5,$5,1
$L40:
	addiu	$10,$10,-1
	srl	$2,$8,24
	bne	$10,$12,$L22
	addiu	$11,$4,1

$L38:
	beq	$4,$14,$L17
	nop

	move	$2,$8
	j	$31
	move	$3,$9

$L39:
	movz	$4,$11,$3
	j	$L40
	addiu	$5,$5,1

$L37:
	j	$L4
	li	$4,1			# 0x1

$L31:
	li	$10,1			# 0x1
	j	$L4
	li	$4,64			# 0x40

$L32:
	li	$10,2			# 0x2
	j	$L4
	li	$4,32			# 0x20

$L33:
	li	$10,3			# 0x3
	j	$L4
	li	$4,16			# 0x10

$L34:
	li	$10,4			# 0x4
	j	$L4
	li	$4,8			# 0x8

$L35:
	li	$10,5			# 0x5
	j	$L4
	li	$4,4			# 0x4

$L36:
	li	$10,6			# 0x6
	j	$L4
	li	$4,2			# 0x2

	.set	macro
	.set	reorder
	.end	ebml_read_vlen_uint
	.section	.text.ebml_read_vlen_int,"ax",@progbits
	.align	2
	.align	5
	.globl	ebml_read_vlen_int
	.ent	ebml_read_vlen_int
	.type	ebml_read_vlen_int, @function
ebml_read_vlen_int:
	.frame	$sp,0,$31		# vars= 0, regs= 0/0, args= 0, gp= 0
	.mask	0x00000000,0
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	lbu	$6,0($4)
	move	$3,$0
	andi	$2,$6,0x80
	or	$2,$2,$3
	move	$10,$4
	bne	$2,$0,$L71
	move	$7,$0

	andi	$2,$6,0x40
	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L72
	andi	$2,$6,0x20

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L73
	andi	$2,$6,0x10

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L74
	andi	$2,$6,0x8

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L75
	andi	$2,$6,0x4

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L76
	andi	$2,$6,0x2

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L77
	andi	$2,$6,0x1

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L78
	li	$11,7			# 0x7

$L57:
	li	$3,2147418112			# 0x7fff0000
	li	$2,-1			# 0xffffffffffffffff
$L83:
	j	$31
	ori	$3,$3,0xffff

$L71:
	move	$11,$0
	li	$4,128			# 0x80
$L44:
	addiu	$4,$4,-1
	and	$8,$6,$4
	sra	$3,$4,31
	xor	$4,$4,$8
	sltu	$4,$4,1
	addiu	$13,$11,1
	li	$14,-1			# 0xffffffffffffffff
	addiu	$11,$11,-1
	and	$9,$7,$3
	addiu	$10,$10,1
	li	$15,255			# 0xff
	srl	$2,$8,24
	beq	$11,$14,$L79
	addiu	$12,$4,1

$L60:
	sll	$7,$9,8
	or	$7,$2,$7
	lbu	$2,0($10)
	sll	$6,$8,8
	or	$8,$6,$2
	andi	$2,$8,0xff
	move	$3,$0
	beq	$15,$2,$L80
	move	$9,$7

	addiu	$10,$10,1
$L82:
	addiu	$11,$11,-1
	srl	$2,$8,24
	bne	$11,$14,$L60
	addiu	$12,$4,1

$L79:
	beq	$4,$13,$L57
	nop

	beq	$11,$8,$L81
	li	$2,-1			# 0xffffffffffffffff

$L66:
	beq	$5,$0,$L84
	sll	$4,$13,3

	sw	$13,0($5)
$L84:
	subu	$4,$4,$13
	addiu	$4,$4,-1
	li	$2,1			# 0x1
	sll	$2,$2,$4
	addiu	$2,$2,-1
	sra	$3,$2,31
	subu	$4,$8,$2
	subu	$5,$9,$3
	sltu	$6,$8,$4
	subu	$5,$5,$6
	move	$2,$4
	j	$31
	move	$3,$5

$L80:
	movz	$4,$12,$3
	j	$L82
	addiu	$10,$10,1

$L81:
	bne	$9,$2,$L66
	nop

	j	$L83
	li	$3,2147418112			# 0x7fff0000

$L72:
	li	$11,1			# 0x1
	j	$L44
	li	$4,64			# 0x40

$L73:
	li	$11,2			# 0x2
	j	$L44
	li	$4,32			# 0x20

$L74:
	li	$11,3			# 0x3
	j	$L44
	li	$4,16			# 0x10

$L75:
	li	$11,4			# 0x4
	j	$L44
	li	$4,8			# 0x8

$L76:
	li	$11,5			# 0x5
	j	$L44
	li	$4,4			# 0x4

$L77:
	li	$11,6			# 0x6
	j	$L44
	li	$4,2			# 0x2

$L78:
	j	$L44
	li	$4,1			# 0x1

	.set	macro
	.set	reorder
	.end	ebml_read_vlen_int
	.section	.text.ebml_read_id,"ax",@progbits
	.align	2
	.align	5
	.globl	ebml_read_id
	.ent	ebml_read_id
	.type	ebml_read_id, @function
ebml_read_id:
	.frame	$sp,40,$31		# vars= 0, regs= 5/0, args= 16, gp= 0
	.mask	0x800f0000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-40
	sw	$18,24($sp)
	sw	$17,20($sp)
	sw	$31,32($sp)
	sw	$19,28($sp)
	sw	$16,16($sp)
	lw	$3,36($4)
	lw	$2,40($4)
	move	$17,$4
	sltu	$2,$3,$2
	beq	$2,$0,$L86
	move	$18,$5

	lw	$2,80($4)
	addiu	$4,$3,1
	addu	$2,$3,$2
	lbu	$3,0($2)
	sw	$4,36($17)
	move	$16,$3
$L88:
	andi	$2,$16,0x80
	bne	$2,$0,$L113
	andi	$2,$16,0x40

	bne	$2,$0,$L114
	andi	$2,$16,0x20

	bne	$2,$0,$L115
	andi	$2,$16,0x10

	bne	$2,$0,$L93
	li	$19,3			# 0x3

$L111:
	li	$16,-1			# 0xffffffffffffffff
$L100:
	move	$2,$16
	lw	$31,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	j	$31
	addiu	$sp,$sp,40

$L86:
	jal	stream_fill_buffer
	nop

	beq	$2,$0,$L111
	nop

	lw	$3,36($17)
	lw	$2,80($17)
	addiu	$5,$3,1
	addu	$2,$2,$3
	lbu	$4,0($2)
	sw	$5,36($17)
	j	$L88
	move	$16,$4

$L113:
	move	$19,$0
$L93:
	beq	$18,$0,$L101
	addiu	$2,$19,1

	sw	$2,0($18)
$L101:
	beq	$19,$0,$L100
	move	$18,$0

	j	$L117
	lw	$3,36($17)

$L116:
	lw	$2,80($17)
	addu	$2,$3,$2
	lbu	$3,0($2)
	sw	$5,36($17)
$L107:
	sll	$2,$16,8
	addiu	$18,$18,1
	beq	$19,$18,$L100
	or	$16,$2,$3

	lw	$3,36($17)
$L117:
	lw	$2,40($17)
	move	$4,$17
	sltu	$2,$3,$2
	bne	$2,$0,$L116
	addiu	$5,$3,1

	jal	stream_fill_buffer
	nop

	beq	$2,$0,$L107
	li	$3,-256			# 0xffffffffffffff00

	lw	$3,36($17)
	lw	$2,80($17)
	addiu	$5,$3,1
	addu	$2,$2,$3
	lbu	$4,0($2)
	sw	$5,36($17)
	j	$L107
	move	$3,$4

$L114:
	j	$L93
	li	$19,1			# 0x1

$L115:
	j	$L93
	li	$19,2			# 0x2

	.set	macro
	.set	reorder
	.end	ebml_read_id
	.section	.text.ebml_read_length,"ax",@progbits
	.align	2
	.align	5
	.globl	ebml_read_length
	.ent	ebml_read_length
	.type	ebml_read_length, @function
ebml_read_length:
	.frame	$sp,48,$31		# vars= 0, regs= 7/0, args= 16, gp= 0
	.mask	0x803f0000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-48
	sw	$18,24($sp)
	sw	$16,16($sp)
	sw	$31,40($sp)
	sw	$21,36($sp)
	sw	$20,32($sp)
	sw	$19,28($sp)
	sw	$17,20($sp)
	lw	$3,36($4)
	lw	$2,40($4)
	move	$18,$4
	sltu	$2,$3,$2
	beq	$2,$0,$L119
	move	$16,$5

	lw	$2,80($4)
	addiu	$4,$3,1
	addu	$2,$3,$2
	lbu	$3,0($2)
	move	$7,$0
	move	$6,$3
	sw	$4,36($18)
$L121:
	andi	$2,$6,0x80
	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L161
	li	$4,128			# 0x80

$L124:
	andi	$2,$6,0x40
	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L162
	andi	$2,$6,0x20

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L163
	andi	$2,$6,0x10

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L164
	andi	$2,$6,0x8

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L165
	andi	$2,$6,0x4

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L166
	andi	$2,$6,0x2

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L167
	andi	$2,$6,0x1

	move	$3,$0
	or	$2,$2,$3
	bne	$2,$0,$L168
	li	$4,1			# 0x1

$L139:
	li	$16,-1			# 0xffffffffffffffff
	li	$17,-1			# 0xffffffffffffffff
	move	$2,$16
	move	$3,$17
	lw	$31,40($sp)
	lw	$21,36($sp)
	lw	$20,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	j	$31
	addiu	$sp,$sp,48

$L119:
	jal	stream_fill_buffer
	nop

	bne	$2,$0,$L169
	nop

	li	$6,-256			# 0xffffffffffffff00
	j	$L124
	li	$7,-1			# 0xffffffffffffffff

$L169:
	lw	$3,36($18)
	lw	$2,80($18)
	addiu	$4,$3,1
	addu	$2,$2,$3
	lbu	$5,0($2)
	move	$7,$0
	move	$6,$5
	j	$L121
	sw	$4,36($18)

$L161:
	move	$20,$0
$L126:
	beq	$16,$0,$L141
	addiu	$21,$20,1

	sw	$21,0($16)
$L141:
	addiu	$4,$4,-1
	and	$16,$6,$4
	sra	$3,$4,31
	xor	$4,$4,$16
	and	$17,$7,$3
	sltu	$19,$4,1
$L159:
	addiu	$20,$20,-1
	li	$2,-1			# 0xffffffffffffffff
	beq	$20,$2,$L170
	move	$4,$18

$L144:
	lw	$3,36($18)
	lw	$2,40($18)
	sltu	$2,$3,$2
	beq	$2,$0,$L145
	addiu	$5,$3,1

	lw	$2,80($18)
	move	$7,$0
	addu	$2,$3,$2
	lbu	$3,0($2)
	sw	$5,36($18)
	move	$6,$3
$L147:
	sll	$4,$16,8
	srl	$2,$16,24
	sll	$5,$17,8
	or	$16,$4,$6
	or	$5,$2,$5
	andi	$4,$16,0xff
	li	$2,255			# 0xff
	or	$17,$5,$7
	addiu	$3,$19,1
	bne	$4,$2,$L159
	move	$5,$0

	addiu	$20,$20,-1
	li	$2,-1			# 0xffffffffffffffff
	movz	$19,$3,$5
	bne	$20,$2,$L144
	move	$4,$18

$L170:
	beq	$19,$21,$L139
	move	$2,$16

	move	$3,$17
	lw	$31,40($sp)
	lw	$21,36($sp)
	lw	$20,32($sp)
	lw	$19,28($sp)
	lw	$18,24($sp)
	lw	$17,20($sp)
	lw	$16,16($sp)
	j	$31
	addiu	$sp,$sp,48

$L145:
	jal	stream_fill_buffer
	nop

	li	$6,-256			# 0xffffffffffffff00
	beq	$2,$0,$L147
	li	$7,-1			# 0xffffffffffffffff

	lw	$3,36($18)
	lw	$2,80($18)
	addiu	$4,$3,1
	addu	$2,$2,$3
	lbu	$5,0($2)
	move	$7,$0
	move	$6,$5
	j	$L147
	sw	$4,36($18)

$L168:
	j	$L126
	li	$20,7			# 0x7

$L162:
	li	$4,64			# 0x40
	j	$L126
	li	$20,1			# 0x1

$L163:
	li	$4,32			# 0x20
	j	$L126
	li	$20,2			# 0x2

$L164:
	li	$4,16			# 0x10
	j	$L126
	li	$20,3			# 0x3

$L165:
	li	$4,8			# 0x8
	j	$L126
	li	$20,4			# 0x4

$L166:
	li	$4,4			# 0x4
	j	$L126
	li	$20,5			# 0x5

$L167:
	li	$4,2			# 0x2
	j	$L126
	li	$20,6			# 0x6

	.set	macro
	.set	reorder
	.end	ebml_read_length
	.section	.text.ebml_read_skip,"ax",@progbits
	.align	2
	.align	5
	.globl	ebml_read_skip
	.ent	ebml_read_skip
	.type	ebml_read_skip, @function
ebml_read_skip:
	.frame	$sp,40,$31		# vars= 8, regs= 3/0, args= 16, gp= 0
	.mask	0x80030000,-8
	.fmask	0x00000000,0
	.set	noreorder
	.set	nomacro
	
	addiu	$sp,$sp,-40
	sw	$16,24($sp)
	move	$16,$5
	addiu	$5,$sp,16
	sw	$17,28($sp)
	sw	$31,32($sp)
	jal	ebml_read_length
	move	$17,$4

	move	$8,$2
	li	$2,-1			# 0xffffffffffffffff
	beq	$8,$2,$L196
	move	$9,$3

$L172:
	beq	$16,$0,$L175
	lw	$2,16($sp)

	sra	$5,$2,31
	addu	$2,$8,$2
	sltu	$6,$2,$8
	addu	$3,$9,$5
	addu	$3,$6,$3
	sw	$2,0($16)
	sw	$3,4($16)
$L175:
	bltz	$8,$L197
	move	$16,$8

	li	$2,262144			# 0x40000
	slt	$2,$2,$8
	beq	$2,$0,$L198
	nop

	lw	$2,28($17)
	andi	$2,$2,0x4
	bne	$2,$0,$L179
	nop

$L193:
	lw	$6,40($17)
	j	$L194
	lw	$5,36($17)

$L189:
	slt	$2,$16,$3
	movn	$3,$16,$2
	addu	$4,$5,$3
	subu	$16,$16,$3
	move	$5,$4
	blez	$16,$L180
	sw	$4,36($17)

$L194:
	subu	$2,$6,$5
	move	$4,$17
	bne	$2,$0,$L189
	move	$3,$2

	jal	stream_fill_buffer
	nop

	beq	$2,$0,$L174
	move	$2,$0

	lw	$5,36($17)
	lw	$6,40($17)
	subu	$3,$6,$5
	slt	$2,$16,$3
	movn	$3,$16,$2
	addu	$4,$5,$3
	subu	$16,$16,$3
	move	$5,$4
	bgtz	$16,$L194
	sw	$4,36($17)

$L180:
	move	$2,$0
$L174:
	lw	$31,32($sp)
$L199:
	lw	$17,28($sp)
	lw	$16,24($sp)
	j	$31
	addiu	$sp,$sp,40

$L198:
	bgtz	$8,$L193
	move	$2,$0

	j	$L199
	lw	$31,32($sp)

$L196:
	bne	$3,$2,$L172
	nop

	j	$L174
	li	$2,1			# 0x1

$L197:
	lw	$2,28($17)
	andi	$2,$2,0x2
	beq	$2,$0,$L174
	move	$2,$0

$L179:
	lw	$4,44($17)
	lw	$2,36($17)
	lw	$6,40($17)
	addu	$2,$4,$2
	subu	$2,$2,$6
	addu	$5,$16,$2
	slt	$3,$5,$4
	beq	$3,$0,$L184
	subu	$2,$4,$6

	subu	$3,$5,$2
	bltz	$3,$L184
	move	$2,$0

	sw	$3,36($17)
	lw	$31,32($sp)
	lw	$17,28($sp)
	lw	$16,24($sp)
	j	$31
	addiu	$sp,$sp,40

$L184:
	jal	stream_seek_long
	move	$4,$17

	lw	$31,32($sp)
	lw	$17,28($sp)
	lw	$16,24($sp)
	move	$2,$0
	j	$31
	addiu	$sp,$sp,40

	.set	macro
	.set	reorder
	.end	ebml_read_skip
	.section	.rodata.str1.4,"aMS",@progbits,1
	.align	2
$LC0:
	.ascii	"stream_read: WARNING! s->buf_pos>s->buf_len\012\000"
	.section	.text.ebml_read_ascii,"ax",@progbits
	.align	2
	.align	5
	.globl	ebml_read_ascii
	.ent	ebml_read_ascii
	.type	ebml_read_ascii, @function
ebml_read_ascii:
	.frame	$sp,56,$31		# vars= 8, regs= 8/0, args= 16, gp= 0
	.mask	0x807f0000,-4
	.fmask	0x00000000,0
	addiu	$sp,$sp,-56
	sw	$18,32($sp)
	move	$18,$5
	addiu	$5,$sp,16
	sw	$19,36($sp)
	sw	$17,28($sp)
	sw	$16,24($sp)
	sw	$31,52($sp)
	sw	$22,48($sp)
	sw	$21,44($sp)
	sw	$20,40($sp)
	.set	noreorder
	.set	nomacro
	jal	ebml_read_length
	move	$19,$4
	.set	macro
	.set	reorder

	move	$16,$2
	li	$2,-1			# 0xffffffffffffffff
	.set	noreorder
	.set	nomacro
	beq	$16,$2,$L238
	move	$17,$3
	.set	macro
	.set	reorder

	.set	noreorder
	.set	nomacro
	bleu	$17,$0,$L239
	move	$20,$0
	.set	macro
	.set	reorder

$L232:
	move	$2,$20
$L249:
	lw	$31,52($sp)
	lw	$22,48($sp)
	lw	$21,44($sp)
	lw	$20,40($sp)
	lw	$19,36($sp)
	lw	$18,32($sp)
	lw	$17,28($sp)
	lw	$16,24($sp)
	.set	noreorder
	.set	nomacro
	j	$31
	addiu	$sp,$sp,56
	.set	macro
	.set	reorder

$L239:
	.set	noreorder
	.set	nomacro
	bne	$17,$0,$L205
	sltu	$2,$16,-1
	.set	macro
	.set	reorder

	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L232
	move	$20,$0
	.set	macro
	.set	reorder

$L205:
	.set	noreorder
	.set	nomacro
	beq	$18,$0,$L206
	lw	$2,16($sp)
	.set	macro
	.set	reorder

	sra	$5,$2,31
	addu	$2,$16,$2
	sltu	$6,$2,$16
	addu	$3,$17,$5
	addu	$3,$6,$3
	sw	$2,0($18)
	sw	$3,4($18)
$L206:
	.set	noreorder
	.set	nomacro
	jal	uc_malloc
	addiu	$4,$16,1
	.set	macro
	.set	reorder

	move	$21,$16
	move	$20,$2
	.set	noreorder
	.set	nomacro
	blez	$16,$L208
	move	$22,$16
	.set	macro
	.set	reorder

	lw	$5,36($19)
	lw	$3,40($19)
	move	$18,$2
	subu	$2,$3,$5
	.set	noreorder
	.set	nomacro
	beq	$2,$0,$L211
	move	$17,$16
	.set	macro
	.set	reorder

$L242:
	move	$16,$2
	sltu	$2,$3,$5
	.set	noreorder
	.set	nomacro
	bne	$2,$0,$L246
	lui	$6,%hi($LC0)
	.set	macro
	.set	reorder

$L217:
	slt	$2,$17,$16
	movn	$16,$17,$2
	lw	$3,80($19)
	sltu	$2,$16,32
	.set	noreorder
	.set	nomacro
	bne	$2,$0,$L219
	addu	$5,$3,$5
	.set	macro
	.set	reorder

$L244:
	andi	$2,$18,0x3
	.set	noreorder
	.set	nomacro
	bne	$2,$0,$L247
	move	$4,$18
	.set	macro
	.set	reorder

	andi	$2,$5,0x3
	.set	noreorder
	.set	nomacro
	bne	$2,$0,$L247
	li	$2,-32			# 0xffffffffffffffe0
	.set	macro
	.set	reorder