SHA256 schedule update 0
SHA256 schedule update 0.
| 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 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | Rn | Rd | ||||||||
| size | opcode | ||||||||||||||||||||||||||||||
if !IsFeatureImplemented(FEAT_SHA256) then EndOfDecode(Decode_UNDEF); end; let d : integer{} = UInt(Rd); let n : integer{} = UInt(Rn);
| <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. |
AArch64_CheckFPAdvSIMDEnabled(); let operand1 : bits(128) = V{}(d); let operand2 : bits(128) = V{}(n); let T : bits(128) = operand2[31:0] :: operand1[127:32]; var result : bits(128); var elt : bits(32); for e = 0 to 3 do elt = T[e*:32]; elt = ROR(elt, 7) XOR ROR(elt, 18) XOR LSR(elt, 3); result[e*:32] = elt + operand1[e*:32]; end; V{128}(d) = result;
This instruction is a data-independent-time instruction as described in About PSTATE.DIT.
2025-09_diff_tag 2025-11-28 16:29:05
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