AE_VLDSHT — set Huffman Table for variable-length decode

Instruction Word

Slot
Inst
6
3
6
2
6
1
6
0
5
9
5
8
5
7
5
6
5
5
5
4
5
3
5
2
5
1
5
0
4
9
4
8
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9876543210
Format x24 - 24 bit(s) 0
AE_VLDSHT 0011010000010000 0100
t 3210

Assembler Syntax

AE_VLDSHT a0..15(art)

C Syntax

#include <xtensa/tie/xt_hifi2.h>

extern void AE_VLDSHT(unsigned ar_t);

Description

AE_VLDSHT sets Huffman Table for variable-length decode. This instruction sets AE_NEXTOFFSET according to the current bits at the head of the bit stream and the table size specified by a for the next lookup that will take place via AE_VLDL16T or AE_VLDL32T.

Implementation Pipeline

In Out
AE_BITPTR Mstage, AE_BITHEAD Mstage, art Mstage AE_FIRST_TS Mstage, AE_NEXTOFFSET Wstage, AE_TABLESIZE Mstage

Protos that use AE_VLDSHT

proto AE_VLDSHT { in uint32 ar_t }{}{
AE_VLDSHT ar_t;
}