43 lines
1.0 KiB
ArmAsm
43 lines
1.0 KiB
ArmAsm
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// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
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// SPDX-License-Identifier: BSD-3-Clause
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// Differential kernel for the arm64 cryptographic extension: the AES round
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// instructions and the SHA1, SHA256 and SHA512 families. Every function is
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// byte-compared against go tool asm.
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#include "textflag.h"
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// func aesRound()
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TEXT ·aesRound(SB), NOSPLIT, $0-0
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AESE V31.B16, V29.B16
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AESD V22.B16, V19.B16
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AESMC V14.B16, V28.B16
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AESIMC V12.B16, V27.B16
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RET
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// func sha1Round()
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TEXT ·sha1Round(SB), NOSPLIT, $0-0
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SHA1C V8.S4, V8, V2
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SHA1P V3.S4, V20, V27
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SHA1M V0.S4, V27, V27
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SHA1H V17, V25
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SHA1SU0 V17.S4, V13.S4, V16.S4
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SHA1SU1 V24.S4, V23.S4
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RET
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// func sha256Round()
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TEXT ·sha256Round(SB), NOSPLIT, $0-0
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SHA256H V4.S4, V2, V11
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SHA256H2 V6.S4, V16, V11
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SHA256SU0 V0.S4, V16.S4
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SHA256SU1 V31.S4, V3.S4, V15.S4
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RET
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// func sha512Round()
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TEXT ·sha512Round(SB), NOSPLIT, $0-0
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SHA512H V2.D2, V1, V0
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SHA512H2 V4.D2, V3, V2
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SHA512SU0 V9.D2, V8.D2
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SHA512SU1 V7.D2, V6.D2, V5.D2
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RET
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