forked from Minki/linux
88 lines
1.8 KiB
ArmAsm
88 lines
1.8 KiB
ArmAsm
|
/*
|
||
|
|
* Copyright (C) 2013 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/linkage.h>
|
||
|
|
#include <asm/assembler.h>
|
||
|
|
|
||
|
|
.arch armv8-a+crypto
|
||
|
|
|
||
|
|
ENTRY(__aes_ce_encrypt)
|
||
|
|
sub w3, w3, #2
|
||
|
|
ld1 {v0.16b}, [x2]
|
||
|
|
ld1 {v1.4s}, [x0], #16
|
||
|
|
cmp w3, #10
|
||
|
|
bmi 0f
|
||
|
|
bne 3f
|
||
|
|
mov v3.16b, v1.16b
|
||
|
|
b 2f
|
||
|
|
0: mov v2.16b, v1.16b
|
||
|
|
ld1 {v3.4s}, [x0], #16
|
||
|
|
1: aese v0.16b, v2.16b
|
||
|
|
aesmc v0.16b, v0.16b
|
||
|
|
2: ld1 {v1.4s}, [x0], #16
|
||
|
|
aese v0.16b, v3.16b
|
||
|
|
aesmc v0.16b, v0.16b
|
||
|
|
3: ld1 {v2.4s}, [x0], #16
|
||
|
|
subs w3, w3, #3
|
||
|
|
aese v0.16b, v1.16b
|
||
|
|
aesmc v0.16b, v0.16b
|
||
|
|
ld1 {v3.4s}, [x0], #16
|
||
|
|
bpl 1b
|
||
|
|
aese v0.16b, v2.16b
|
||
|
|
eor v0.16b, v0.16b, v3.16b
|
||
|
|
st1 {v0.16b}, [x1]
|
||
|
|
ret
|
||
|
|
ENDPROC(__aes_ce_encrypt)
|
||
|
|
|
||
|
|
ENTRY(__aes_ce_decrypt)
|
||
|
|
sub w3, w3, #2
|
||
|
|
ld1 {v0.16b}, [x2]
|
||
|
|
ld1 {v1.4s}, [x0], #16
|
||
|
|
cmp w3, #10
|
||
|
|
bmi 0f
|
||
|
|
bne 3f
|
||
|
|
mov v3.16b, v1.16b
|
||
|
|
b 2f
|
||
|
|
0: mov v2.16b, v1.16b
|
||
|
|
ld1 {v3.4s}, [x0], #16
|
||
|
|
1: aesd v0.16b, v2.16b
|
||
|
|
aesimc v0.16b, v0.16b
|
||
|
|
2: ld1 {v1.4s}, [x0], #16
|
||
|
|
aesd v0.16b, v3.16b
|
||
|
|
aesimc v0.16b, v0.16b
|
||
|
|
3: ld1 {v2.4s}, [x0], #16
|
||
|
|
subs w3, w3, #3
|
||
|
|
aesd v0.16b, v1.16b
|
||
|
|
aesimc v0.16b, v0.16b
|
||
|
|
ld1 {v3.4s}, [x0], #16
|
||
|
|
bpl 1b
|
||
|
|
aesd v0.16b, v2.16b
|
||
|
|
eor v0.16b, v0.16b, v3.16b
|
||
|
|
st1 {v0.16b}, [x1]
|
||
|
|
ret
|
||
|
|
ENDPROC(__aes_ce_decrypt)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* __aes_ce_sub() - use the aese instruction to perform the AES sbox
|
||
|
|
* substitution on each byte in 'input'
|
||
|
|
*/
|
||
|
|
ENTRY(__aes_ce_sub)
|
||
|
|
dup v1.4s, w0
|
||
|
|
movi v0.16b, #0
|
||
|
|
aese v0.16b, v1.16b
|
||
|
|
umov w0, v0.s[0]
|
||
|
|
ret
|
||
|
|
ENDPROC(__aes_ce_sub)
|
||
|
|
|
||
|
|
ENTRY(__aes_ce_invert)
|
||
|
|
ld1 {v0.4s}, [x1]
|
||
|
|
aesimc v1.16b, v0.16b
|
||
|
|
st1 {v1.4s}, [x0]
|
||
|
|
ret
|
||
|
|
ENDPROC(__aes_ce_invert)
|