SHA256 schedule update 1.
| 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 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | Rm | 0 | 1 | 1 | 0 | 0 | 0 | Rn | Rd | ||||||||||||
integer d = UInt(Rd); integer n = UInt(Rn); integer m = UInt(Rm); if !HaveSHA256Ext() then UNDEFINED;
| <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) operand1 = V[d]; bits(128) operand2 = V[n]; bits(128) operand3 = V[m]; bits(128) result; bits(128) T0 = operand3<31:0> : operand2<127:32>; bits(64) T1; bits(32) elt; T1 = operand3<127:64>; for e = 0 to 1 elt = Elem[T1, e, 32]; elt = ROR(elt, 17) EOR ROR(elt, 19) EOR LSR(elt, 10); elt = elt + Elem[operand1, e, 32] + Elem[T0, e, 32]; Elem[result, e, 32] = elt; T1 = result<63:0>; for e = 2 to 3 elt = Elem[T1, e - 2, 32]; elt = ROR(elt, 17) EOR ROR(elt, 19) EOR LSR(elt, 10); elt = elt + Elem[operand1, e, 32] + Elem[T0, e, 32]; Elem[result, e, 32] = elt; V[d] = result;
If PSTATE.DIT is 1:
Internal version only: isa v33.11seprel, AdvSIMD v29.05, pseudocode v2021-09_rel, sve v2021-09_rc3d ; Build timestamp: 2021-10-06T11:41
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