AE_SLAS24S — 2-way bidirectional 24-bit signed arithmetic shift left by shift amount 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_SLAS24S 1000000000011001 10110001
ae_fld_shift_d 3210
ae_fld_shift_d0 3210

Slot
ae_slot2_0
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_format - 64 bit(s) 1111
AE_SLAS24S11101010 0001
ae_fld_shift_d 3210
ae_fld_shift_d0 3210

Assembler Syntax

AE_SLAS24S aed0..15(ae_shift_d), aed0..15(ae_shift_d0)

C Syntax

#include <xtensa/tie/xt_hifi2.h>

extern ae_f24x2 AE_SLAS24S(ae_f24x2 d0);

Description

AE_SLAS24S is a two-way signed bidirectional arithmetic (sign-extending) saturating left shift of bits [23:0] of AE_DR register d0 by shift amount register AE_SAR, with result signed extended to 32-bits and placed in d. In case of saturation, state AE_OVERFLOW is set to 1.

Implementation Pipeline

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

Protos that use AE_SLAS24S

proto AE_F24X2_SLA { out ae_f24x2 d, in ae_f24x2 d0, in int32 sa }{}{
WUR.AE_SAR sa;
AE_SLAS24S d, d0;
}
proto AE_F24_SLA { out ae_f24 d, in ae_f24 d0, in int32 sa }{}{
WUR.AE_SAR sa;
AE_SLAS24S d, d0;
}
proto AE_P24F_SLAS { out ae_p24f d, in ae_p24f d0, in int32 sa }{}{
WUR.AE_SAR sa;
AE_SLAS24S d, d0;
}
proto AE_P24S_SLAS { out ae_p24s d, in ae_p24s d0, in int32 sa }{}{
WUR.AE_SAR sa;
AE_SLAS24S d, d0;
}
proto AE_P24X2F_SLAS { out ae_p24x2f d, in ae_p24x2f d0, in int32 sa }{}{
WUR.AE_SAR sa;
AE_SLAS24S d, d0;
}
proto AE_P24X2S_SLAS { out ae_p24x2s d, in ae_p24x2s d0, in int32 sa }{}{
WUR.AE_SAR sa;
AE_SLAS24S d, d0;
}
proto AE_SLAS24S { out ae_f24x2 d, in ae_f24x2 d0 }{}{
AE_SLAS24S d, d0;
}
proto AE_SLLSSP24S { out ae_p24x2s d, in ae_p24x2s d0 }{}{
AE_SLAS24S d, d0;
}