| /* SPDX-License-Identifier: BSD-2-Clause */ |
| /* |
| * Copyright 2023 The ChromiumOS Authors |
| * Copyright (c) 2015-2020, Linaro Limited |
| * Copyright (C) 2014 Linaro Ltd <ard.biesheuvel@linaro.org> |
| */ |
| |
| /* Core SHA-224/SHA-256 transform using v8 Crypto Extensions */ |
| |
| .arch armv8-a+crypto |
| |
| dga .req q20 |
| dgav .req v20 |
| dgb .req q21 |
| dgbv .req v21 |
| |
| t0 .req v22 |
| t1 .req v23 |
| |
| dg0q .req q24 |
| dg0v .req v24 |
| dg1q .req q25 |
| dg1v .req v25 |
| dg2q .req q26 |
| dg2v .req v26 |
| |
| .macro add_only, ev, rc, s0 |
| mov dg2v.16b, dg0v.16b |
| .ifeq \ev |
| add t1.4s, v\s0\().4s, \rc\().4s |
| sha256h dg0q, dg1q, t0.4s |
| sha256h2 dg1q, dg2q, t0.4s |
| .else |
| .ifnb \s0 |
| add t0.4s, v\s0\().4s, \rc\().4s |
| .endif |
| sha256h dg0q, dg1q, t1.4s |
| sha256h2 dg1q, dg2q, t1.4s |
| .endif |
| .endm |
| |
| .macro add_update, ev, rc, s0, s1, s2, s3 |
| sha256su0 v\s0\().4s, v\s1\().4s |
| add_only \ev, \rc, \s1 |
| sha256su1 v\s0\().4s, v\s2\().4s, v\s3\().4s |
| .endm |
| |
| .macro FUNC name colon |
| .section .text.\name , "ax" , %progbits |
| .global \name |
| .type \name , %function |
| .balign 4 |
| \name \colon |
| .endm |
| |
| .macro END_FUNC name |
| .size \name , .-\name |
| .endm |
| |
| .extern vb2_sha256_k /* Defined in 2sha256.c */ |
| |
| /* |
| * void sha2_ce_transform(struct sha256_ce_state *sst, u8 const *src, |
| * int blocks) |
| */ |
| FUNC sha256_ce_transform , : |
| /* load round constants */ |
| adr x8, vb2_sha256_k |
| ld1 { v0.4s- v3.4s}, [x8], #64 |
| ld1 { v4.4s- v7.4s}, [x8], #64 |
| ld1 { v8.4s-v11.4s}, [x8], #64 |
| ld1 {v12.4s-v15.4s}, [x8] |
| |
| /* load state */ |
| mov x9, x0 |
| ld1 {dgav.4s}, [x9], #16 |
| ld1 {dgbv.4s}, [x9] |
| |
| /* load input */ |
| 0: ld1 {v16.16b-v19.16b}, [x1], #64 |
| sub w2, w2, #1 |
| |
| rev32 v16.16b, v16.16b |
| rev32 v17.16b, v17.16b |
| rev32 v18.16b, v18.16b |
| rev32 v19.16b, v19.16b |
| |
| 1: add t0.4s, v16.4s, v0.4s |
| mov dg0v.16b, dgav.16b |
| mov dg1v.16b, dgbv.16b |
| |
| add_update 0, v1, 16, 17, 18, 19 |
| add_update 1, v2, 17, 18, 19, 16 |
| add_update 0, v3, 18, 19, 16, 17 |
| add_update 1, v4, 19, 16, 17, 18 |
| |
| add_update 0, v5, 16, 17, 18, 19 |
| add_update 1, v6, 17, 18, 19, 16 |
| add_update 0, v7, 18, 19, 16, 17 |
| add_update 1, v8, 19, 16, 17, 18 |
| |
| add_update 0, v9, 16, 17, 18, 19 |
| add_update 1, v10, 17, 18, 19, 16 |
| add_update 0, v11, 18, 19, 16, 17 |
| add_update 1, v12, 19, 16, 17, 18 |
| |
| add_only 0, v13, 17 |
| add_only 1, v14, 18 |
| add_only 0, v15, 19 |
| add_only 1 |
| |
| /* update state */ |
| add dgav.4s, dgav.4s, dg0v.4s |
| add dgbv.4s, dgbv.4s, dg1v.4s |
| |
| /* handled all input blocks? */ |
| cbnz w2, 0b |
| |
| /* store new state */ |
| 3: mov x9, x0 |
| st1 {dgav.16b}, [x9], #16 |
| st1 {dgbv.16b}, [x9] |
| ret |
| END_FUNC sha256_ce_transform |
