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C x86_64/aesni/cbc-aes256-encrypt.asm
ifelse(`
Copyright (C) 2015, 2018, 2021 Niels Möller
This file is part of GNU Nettle.
GNU Nettle is free software: you can redistribute it and/or
modify it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
or both in parallel, as here.
GNU Nettle is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received copies of the GNU General Public License and
the GNU Lesser General Public License along with this program. If
not, see http://www.gnu.org/licenses/.
')
C Input argument
define(`CTX', `%rdi')
define(`IV', `%rsi')
define(`LENGTH',`%rdx')
define(`DST', `%rcx')
define(`SRC', `%r8')
define(`KEY0_7', `%xmm0')
define(`KEY1', `%xmm1')
define(`KEY2', `%xmm2')
define(`KEY3', `%xmm3')
define(`KEY4', `%xmm4')
define(`KEY5', `%xmm5')
define(`KEY6', `%xmm6')
define(`KEY8', `%xmm7')
define(`KEY9', `%xmm8')
define(`KEY10', `%xmm9')
define(`KEY11', `%xmm10')
define(`KEY12', `%xmm11')
define(`KEY13', `%xmm12')
define(`KEY14', `%xmm13')
define(`X', `%xmm14')
define(`BLOCK', `%xmm15')
.file "cbc-aes256-encrypt.asm"
C nettle_cbc_aes256_encrypt(struct cbc_aes256_ctx *ctx,
C uint8_t *iv,
C size_t length, uint8_t *dst,
C const uint8_t *src);
.text
ALIGN(16)
PROLOGUE(nettle_cbc_aes256_encrypt)
W64_ENTRY(5, 16)
shr $4, LENGTH
test LENGTH, LENGTH
jz .Lend
movups (CTX), KEY0_7
movups 16(CTX), KEY1
movups 32(CTX), KEY2
movups 48(CTX), KEY3
movups 64(CTX), KEY4
movups 80(CTX), KEY5
movups 96(CTX), KEY6
movups 128(CTX), KEY8
movups 144(CTX), KEY9
movups 160(CTX), KEY10
movups 176(CTX), KEY11
movups 192(CTX), KEY12
movups 208(CTX), KEY13
movups 224(CTX), KEY14
movups (IV), X
.Lblock_loop:
movups (SRC), BLOCK C Cleartext block
pxor KEY0_7, X
movups 112(CTX), KEY0_7
pxor BLOCK, X
aesenc KEY1, X
aesenc KEY2, X
aesenc KEY3, X
aesenc KEY4, X
aesenc KEY5, X
aesenc KEY6, X
aesenc KEY0_7, X
movups (CTX), KEY0_7
aesenc KEY8, X
aesenc KEY9, X
aesenc KEY10, X
aesenc KEY11, X
aesenc KEY12, X
aesenc KEY13, X
aesenclast KEY14, X
movups X, (DST)
add $16, SRC
add $16, DST
dec LENGTH
jnz .Lblock_loop
movups X, (IV)
.Lend:
W64_EXIT(5, 16)
ret
EPILOGUE(nettle_cbc_aes256_encrypt)
|
