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SHA256H

SHA256 hash update (part 1).

313029282726252423222120191817161514131211109876543210
01011110000Rm010000RnRd
P

SHA256H <Qd>, <Qn>, <Vm>.4S

integer d = UInt(Rd); integer n = UInt(Rn); integer m = UInt(Rm); if !HaveSHA256Ext() then UNDEFINED; boolean part1 = (P == '0');

Assembler Symbols

<Qd>

Is the 128-bit name of the SIMD&FP source and destination, encoded in the "Rd" field.

<Qn>

Is the 128-bit 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.

Operation

AArch64.CheckFPAdvSIMDEnabled(); bits(128) result; if part1 then result = SHA256hash(V[d], V[n], V[m], TRUE); else result = SHA256hash(V[n], V[d], V[m], FALSE); V[d] = result;

Operational information

If PSTATE.DIT is 1:


Internal version only: isa v32.12v32.06, AdvSIMD v29.04, pseudocode v2020-09_xmlv2020-06_rel, sve v2020-09_rc3v2020-06_rel0 ; Build timestamp: 2020-11-18T172020-07-03T12:2342

Copyright © 2010-2020 Arm Limited or its affiliates. All rights reserved. This document is Non-Confidential.

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