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This instruction can insert data into individual elements within a SIMD&FP register without clearing the remaining bits to zero.
Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.
Insert vector element from another vector element. This instruction copies the vector element of the source SIMD&FP register to the specified vector element of the destination SIMD&FP register.
Insert vector element from another vector element. This instruction copies the vector element of the source SIMD&FP register to the specified vector element of the destination SIMD&FP register.
This instruction can insert data into individual elements within a SIMD&FP register without clearing the remaining bits to zero.
Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.
This instruction is used by the alias MOV (element).
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
0 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | imm5 | 0 | imm4 | 1 | Rn | Rd |
integer d = UInt(Rd); integer n = UInt(Rn); integer size = LowestSetBit(imm5); if size > 3 then UNDEFINED; integer dst_index = UInt(imm5<4:size+1>); integer src_index = UInt(imm4<3:size>); integer idxdsize = if imm4<3> == '1' then 128 else 64; // imm4<size-1:0> is IGNORED integer esize = 8 << size;
<Vd> | Is the name of the SIMD&FP destination register, encoded in the "Rd" field. |
<Ts> |
Is an element size specifier,
encoded in
imm5:
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<Vn> | Is the name of the SIMD&FP source register, encoded in the "Rn" field. |
<index2> |
Is the source element index
encoded in
imm5:imm4:
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CheckFPAdvSIMDEnabled64(); bits(idxdsize) operand = V[n]; bits(128) result; result = V[d]; Elem[result, dst_index, esize] = Elem[operand, src_index, esize]; V[d] = result;
If PSTATE.DIT is 1:
Internal version only: isa v32.13v32.12, AdvSIMD v29.05v29.04, pseudocode v2020-12v2020-09_xml, sve v2020-12v2020-09_rc3
; Build timestamp: 2020-12-16T142020-11-18T17:1723
Copyright © 2010-2020 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.
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