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123 lines
2.7 KiB
123 lines
2.7 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* sha2-ce-core.S - SHA-224/256 secure hash using ARMv8 Crypto Extensions |
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* |
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* Copyright (C) 2015 Linaro Ltd. |
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* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org> |
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*/ |
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#include <linux/linkage.h> |
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#include <asm/assembler.h> |
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.text |
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.arch armv8-a |
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.fpu crypto-neon-fp-armv8 |
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k0 .req q7 |
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k1 .req q8 |
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rk .req r3 |
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ta0 .req q9 |
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ta1 .req q10 |
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tb0 .req q10 |
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tb1 .req q9 |
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dga .req q11 |
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dgb .req q12 |
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dg0 .req q13 |
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dg1 .req q14 |
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dg2 .req q15 |
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.macro add_only, ev, s0 |
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vmov dg2, dg0 |
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.ifnb \s0 |
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vld1.32 {k\ev}, [rk, :128]! |
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.endif |
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sha256h.32 dg0, dg1, tb\ev |
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sha256h2.32 dg1, dg2, tb\ev |
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.ifnb \s0 |
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vadd.u32 ta\ev, q\s0, k\ev |
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.endif |
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.endm |
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.macro add_update, ev, s0, s1, s2, s3 |
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sha256su0.32 q\s0, q\s1 |
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add_only \ev, \s1 |
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sha256su1.32 q\s0, q\s2, q\s3 |
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.endm |
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.align 6 |
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.Lsha256_rcon: |
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.word 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5 |
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.word 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5 |
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.word 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3 |
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.word 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174 |
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.word 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc |
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.word 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da |
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.word 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7 |
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.word 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967 |
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.word 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13 |
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.word 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85 |
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.word 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3 |
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.word 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070 |
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.word 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5 |
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.word 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3 |
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.word 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208 |
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.word 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 |
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/* |
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* void sha2_ce_transform(struct sha256_state *sst, u8 const *src, |
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int blocks); |
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*/ |
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ENTRY(sha2_ce_transform) |
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/* load state */ |
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vld1.32 {dga-dgb}, [r0] |
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/* load input */ |
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0: vld1.32 {q0-q1}, [r1]! |
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vld1.32 {q2-q3}, [r1]! |
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subs r2, r2, #1 |
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#ifndef CONFIG_CPU_BIG_ENDIAN |
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vrev32.8 q0, q0 |
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vrev32.8 q1, q1 |
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vrev32.8 q2, q2 |
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vrev32.8 q3, q3 |
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#endif |
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/* load first round constant */ |
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adr rk, .Lsha256_rcon |
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vld1.32 {k0}, [rk, :128]! |
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vadd.u32 ta0, q0, k0 |
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vmov dg0, dga |
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vmov dg1, dgb |
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add_update 1, 0, 1, 2, 3 |
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add_update 0, 1, 2, 3, 0 |
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add_update 1, 2, 3, 0, 1 |
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add_update 0, 3, 0, 1, 2 |
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add_update 1, 0, 1, 2, 3 |
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add_update 0, 1, 2, 3, 0 |
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add_update 1, 2, 3, 0, 1 |
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add_update 0, 3, 0, 1, 2 |
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add_update 1, 0, 1, 2, 3 |
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add_update 0, 1, 2, 3, 0 |
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add_update 1, 2, 3, 0, 1 |
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add_update 0, 3, 0, 1, 2 |
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add_only 1, 1 |
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add_only 0, 2 |
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add_only 1, 3 |
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add_only 0 |
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/* update state */ |
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vadd.u32 dga, dga, dg0 |
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vadd.u32 dgb, dgb, dg1 |
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bne 0b |
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/* store new state */ |
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vst1.32 {dga-dgb}, [r0] |
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bx lr |
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ENDPROC(sha2_ce_transform)
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