SM3PARTW1 takes three 128-bit vectors from the three source SIMD&FP registers and returns a 128-bit result in the destination SIMD&FP register. The result is obtained by a three-way exclusive-OR of the elements within the input vectors with some fixed rotations, see the Operation pseudocode for more information.
| 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 |
| 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | Rm | 1 | 1 | 0 | 0 | 0 | 0 | Rn | Rd | ||||||||||||
| O | opcode | ||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SM3) then UNDEFINED; integer d = UInt(Rd); integer n = UInt(Rn); integer m = UInt(Rm);
| <Vd> |
Is the name of the SIMD&FP source and destination register, encoded in the "Rd" field. |
| <Vn> |
Is the name of the second SIMD&FP source register, encoded in the "Rn" field. |
| <Vm> |
Is the name of the third SIMD&FP source register, encoded in the "Rm" field. |
AArch64.CheckFPAdvSIMDEnabled(); bits(128) Vm = V[m, 128]; bits(128) Vn = V[n, 128]; bits(128) Vd = V[d, 128]; bits(128) result; result<95:0> = (Vd EOR Vn)<95:0> EOR (ROL(Vm<127:96>, 15):ROL(Vm<95:64>, 15):ROL(Vm<63:32>, 15)); for i = 0 to 3 if i == 3 then result<127:96> = (Vd EOR Vn)<127:96> EOR (ROL(result<31:0>, 15)); result<(32*i)+31:(32*i)> = (result<(32*i)+31:(32*i)> EOR ROL(result<(32*i)+31:(32*i)>, 15) EOR ROL(result<(32*i)+31:(32*i)>, 23)); V[d, 128] = result;
If PSTATE.DIT is 1:
Internal version only: aarchmrs v2024-03_relA, pseudocode v2024-03_rel, sve v2024-03_rel ; Build timestamp: 2024-03-26T09:45
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