AE_SLAASQ56S — 56-bit arithmetic bidirectional signed shift left by AR register, with saturation

Instruction Word

Slot
ae2_slot0
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 ae_format2 - 64 bit(s)0000 1110
AE_SLAASQ56S 1000000000001100 1011
ae_fld_shift_d 3210
ae_fld_shift_d0 3210
s 3210

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_SLAASQ56S 00000110 0100
ae_fld_shift_d 3210
ae_fld_shift_d0 3210
s 3210

Assembler Syntax

AE_SLAASQ56S aed0..15(ae_shift_d), aed0..15(ae_shift_d0), a0..15(ars)

C Syntax

#include <xtensa/tie/xt_hifi2.h>

extern ae_q56s AE_SLAASQ56S(ae_q56s d0, int sa);

Description

AE_SLAASQ56S is a 56-bit bidirectional arithmetic signed saturating left shift of bits [55:0] of AE_DR register d0 by AR register a, with result sign extended to 64-bits and placed in d. In case of saturation, state AE_OVERFLOW is set to 1.

Implementation Pipeline

In Out
AE_OVERFLOW Wstage, ae_shift_d0 Mstage, ars Estage AE_OVERFLOW Wstage, ae_shift_d Mstage

Protos that use AE_SLAASQ56S

proto AE_SLAASQ56S { out ae_q56s d, in ae_q56s d0, in int32 sa }{}{
AE_SLAASQ56S d, d0, sa;
}
proto AE_SLLASQ56S { out ae_q56s d, in ae_q56s d0, in int32 sa }{}{
AE_SLAASQ56S d, d0, sa;
}