mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-04 17:44:14 +08:00
90be188b65
Use SPDX-License-Identifier instead of a verbose license text and update external link. Cc: James Guilford <james.guilford@intel.com> Cc: Sean Gulley <sean.m.gulley@intel.com> Cc: Chandramouli Narayanan <mouli@linux.intel.com> Signed-off-by: Nathan Huckleberry <nhuck@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
526 lines
10 KiB
ArmAsm
526 lines
10 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-only OR BSD-3-Clause */
|
|
/*
|
|
* AES CTR mode by8 optimization with AVX instructions. (x86_64)
|
|
*
|
|
* Copyright(c) 2014 Intel Corporation.
|
|
*
|
|
* Contact Information:
|
|
* James Guilford <james.guilford@intel.com>
|
|
* Sean Gulley <sean.m.gulley@intel.com>
|
|
* Chandramouli Narayanan <mouli@linux.intel.com>
|
|
*/
|
|
/*
|
|
* This is AES128/192/256 CTR mode optimization implementation. It requires
|
|
* the support of Intel(R) AESNI and AVX instructions.
|
|
*
|
|
* This work was inspired by the AES CTR mode optimization published
|
|
* in Intel Optimized IPSEC Cryptographic library.
|
|
* Additional information on it can be found at:
|
|
* https://github.com/intel/intel-ipsec-mb
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
#define VMOVDQ vmovdqu
|
|
|
|
#define xdata0 %xmm0
|
|
#define xdata1 %xmm1
|
|
#define xdata2 %xmm2
|
|
#define xdata3 %xmm3
|
|
#define xdata4 %xmm4
|
|
#define xdata5 %xmm5
|
|
#define xdata6 %xmm6
|
|
#define xdata7 %xmm7
|
|
#define xcounter %xmm8
|
|
#define xbyteswap %xmm9
|
|
#define xkey0 %xmm10
|
|
#define xkey4 %xmm11
|
|
#define xkey8 %xmm12
|
|
#define xkey12 %xmm13
|
|
#define xkeyA %xmm14
|
|
#define xkeyB %xmm15
|
|
|
|
#define p_in %rdi
|
|
#define p_iv %rsi
|
|
#define p_keys %rdx
|
|
#define p_out %rcx
|
|
#define num_bytes %r8
|
|
|
|
#define tmp %r10
|
|
#define DDQ_DATA 0
|
|
#define XDATA 1
|
|
#define KEY_128 1
|
|
#define KEY_192 2
|
|
#define KEY_256 3
|
|
|
|
.section .rodata
|
|
.align 16
|
|
|
|
byteswap_const:
|
|
.octa 0x000102030405060708090A0B0C0D0E0F
|
|
ddq_low_msk:
|
|
.octa 0x0000000000000000FFFFFFFFFFFFFFFF
|
|
ddq_high_add_1:
|
|
.octa 0x00000000000000010000000000000000
|
|
ddq_add_1:
|
|
.octa 0x00000000000000000000000000000001
|
|
ddq_add_2:
|
|
.octa 0x00000000000000000000000000000002
|
|
ddq_add_3:
|
|
.octa 0x00000000000000000000000000000003
|
|
ddq_add_4:
|
|
.octa 0x00000000000000000000000000000004
|
|
ddq_add_5:
|
|
.octa 0x00000000000000000000000000000005
|
|
ddq_add_6:
|
|
.octa 0x00000000000000000000000000000006
|
|
ddq_add_7:
|
|
.octa 0x00000000000000000000000000000007
|
|
ddq_add_8:
|
|
.octa 0x00000000000000000000000000000008
|
|
|
|
.text
|
|
|
|
/* generate a unique variable for ddq_add_x */
|
|
|
|
/* generate a unique variable for xmm register */
|
|
.macro setxdata n
|
|
var_xdata = %xmm\n
|
|
.endm
|
|
|
|
/* club the numeric 'id' to the symbol 'name' */
|
|
|
|
.macro club name, id
|
|
.altmacro
|
|
.if \name == XDATA
|
|
setxdata %\id
|
|
.endif
|
|
.noaltmacro
|
|
.endm
|
|
|
|
/*
|
|
* do_aes num_in_par load_keys key_len
|
|
* This increments p_in, but not p_out
|
|
*/
|
|
.macro do_aes b, k, key_len
|
|
.set by, \b
|
|
.set load_keys, \k
|
|
.set klen, \key_len
|
|
|
|
.if (load_keys)
|
|
vmovdqa 0*16(p_keys), xkey0
|
|
.endif
|
|
|
|
vpshufb xbyteswap, xcounter, xdata0
|
|
|
|
.set i, 1
|
|
.rept (by - 1)
|
|
club XDATA, i
|
|
vpaddq (ddq_add_1 + 16 * (i - 1))(%rip), xcounter, var_xdata
|
|
vptest ddq_low_msk(%rip), var_xdata
|
|
jnz 1f
|
|
vpaddq ddq_high_add_1(%rip), var_xdata, var_xdata
|
|
vpaddq ddq_high_add_1(%rip), xcounter, xcounter
|
|
1:
|
|
vpshufb xbyteswap, var_xdata, var_xdata
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
vmovdqa 1*16(p_keys), xkeyA
|
|
|
|
vpxor xkey0, xdata0, xdata0
|
|
vpaddq (ddq_add_1 + 16 * (by - 1))(%rip), xcounter, xcounter
|
|
vptest ddq_low_msk(%rip), xcounter
|
|
jnz 1f
|
|
vpaddq ddq_high_add_1(%rip), xcounter, xcounter
|
|
1:
|
|
|
|
.set i, 1
|
|
.rept (by - 1)
|
|
club XDATA, i
|
|
vpxor xkey0, var_xdata, var_xdata
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
vmovdqa 2*16(p_keys), xkeyB
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
vaesenc xkeyA, var_xdata, var_xdata /* key 1 */
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen == KEY_128)
|
|
.if (load_keys)
|
|
vmovdqa 3*16(p_keys), xkey4
|
|
.endif
|
|
.else
|
|
vmovdqa 3*16(p_keys), xkeyA
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
vaesenc xkeyB, var_xdata, var_xdata /* key 2 */
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
add $(16*by), p_in
|
|
|
|
.if (klen == KEY_128)
|
|
vmovdqa 4*16(p_keys), xkeyB
|
|
.else
|
|
.if (load_keys)
|
|
vmovdqa 4*16(p_keys), xkey4
|
|
.endif
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 3 */
|
|
.if (klen == KEY_128)
|
|
vaesenc xkey4, var_xdata, var_xdata
|
|
.else
|
|
vaesenc xkeyA, var_xdata, var_xdata
|
|
.endif
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
vmovdqa 5*16(p_keys), xkeyA
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 4 */
|
|
.if (klen == KEY_128)
|
|
vaesenc xkeyB, var_xdata, var_xdata
|
|
.else
|
|
vaesenc xkey4, var_xdata, var_xdata
|
|
.endif
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen == KEY_128)
|
|
.if (load_keys)
|
|
vmovdqa 6*16(p_keys), xkey8
|
|
.endif
|
|
.else
|
|
vmovdqa 6*16(p_keys), xkeyB
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
vaesenc xkeyA, var_xdata, var_xdata /* key 5 */
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
vmovdqa 7*16(p_keys), xkeyA
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 6 */
|
|
.if (klen == KEY_128)
|
|
vaesenc xkey8, var_xdata, var_xdata
|
|
.else
|
|
vaesenc xkeyB, var_xdata, var_xdata
|
|
.endif
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen == KEY_128)
|
|
vmovdqa 8*16(p_keys), xkeyB
|
|
.else
|
|
.if (load_keys)
|
|
vmovdqa 8*16(p_keys), xkey8
|
|
.endif
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
vaesenc xkeyA, var_xdata, var_xdata /* key 7 */
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen == KEY_128)
|
|
.if (load_keys)
|
|
vmovdqa 9*16(p_keys), xkey12
|
|
.endif
|
|
.else
|
|
vmovdqa 9*16(p_keys), xkeyA
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 8 */
|
|
.if (klen == KEY_128)
|
|
vaesenc xkeyB, var_xdata, var_xdata
|
|
.else
|
|
vaesenc xkey8, var_xdata, var_xdata
|
|
.endif
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
vmovdqa 10*16(p_keys), xkeyB
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 9 */
|
|
.if (klen == KEY_128)
|
|
vaesenc xkey12, var_xdata, var_xdata
|
|
.else
|
|
vaesenc xkeyA, var_xdata, var_xdata
|
|
.endif
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen != KEY_128)
|
|
vmovdqa 11*16(p_keys), xkeyA
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 10 */
|
|
.if (klen == KEY_128)
|
|
vaesenclast xkeyB, var_xdata, var_xdata
|
|
.else
|
|
vaesenc xkeyB, var_xdata, var_xdata
|
|
.endif
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen != KEY_128)
|
|
.if (load_keys)
|
|
vmovdqa 12*16(p_keys), xkey12
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
vaesenc xkeyA, var_xdata, var_xdata /* key 11 */
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen == KEY_256)
|
|
vmovdqa 13*16(p_keys), xkeyA
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
.if (klen == KEY_256)
|
|
/* key 12 */
|
|
vaesenc xkey12, var_xdata, var_xdata
|
|
.else
|
|
vaesenclast xkey12, var_xdata, var_xdata
|
|
.endif
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.if (klen == KEY_256)
|
|
vmovdqa 14*16(p_keys), xkeyB
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 13 */
|
|
vaesenc xkeyA, var_xdata, var_xdata
|
|
.set i, (i +1)
|
|
.endr
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
/* key 14 */
|
|
vaesenclast xkeyB, var_xdata, var_xdata
|
|
.set i, (i +1)
|
|
.endr
|
|
.endif
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept (by / 2)
|
|
.set j, (i+1)
|
|
VMOVDQ (i*16 - 16*by)(p_in), xkeyA
|
|
VMOVDQ (j*16 - 16*by)(p_in), xkeyB
|
|
club XDATA, i
|
|
vpxor xkeyA, var_xdata, var_xdata
|
|
club XDATA, j
|
|
vpxor xkeyB, var_xdata, var_xdata
|
|
.set i, (i+2)
|
|
.endr
|
|
|
|
.if (i < by)
|
|
VMOVDQ (i*16 - 16*by)(p_in), xkeyA
|
|
club XDATA, i
|
|
vpxor xkeyA, var_xdata, var_xdata
|
|
.endif
|
|
|
|
.set i, 0
|
|
.rept by
|
|
club XDATA, i
|
|
VMOVDQ var_xdata, i*16(p_out)
|
|
.set i, (i+1)
|
|
.endr
|
|
.endm
|
|
|
|
.macro do_aes_load val, key_len
|
|
do_aes \val, 1, \key_len
|
|
.endm
|
|
|
|
.macro do_aes_noload val, key_len
|
|
do_aes \val, 0, \key_len
|
|
.endm
|
|
|
|
/* main body of aes ctr load */
|
|
|
|
.macro do_aes_ctrmain key_len
|
|
cmp $16, num_bytes
|
|
jb .Ldo_return2\key_len
|
|
|
|
vmovdqa byteswap_const(%rip), xbyteswap
|
|
vmovdqu (p_iv), xcounter
|
|
vpshufb xbyteswap, xcounter, xcounter
|
|
|
|
mov num_bytes, tmp
|
|
and $(7*16), tmp
|
|
jz .Lmult_of_8_blks\key_len
|
|
|
|
/* 1 <= tmp <= 7 */
|
|
cmp $(4*16), tmp
|
|
jg .Lgt4\key_len
|
|
je .Leq4\key_len
|
|
|
|
.Llt4\key_len:
|
|
cmp $(2*16), tmp
|
|
jg .Leq3\key_len
|
|
je .Leq2\key_len
|
|
|
|
.Leq1\key_len:
|
|
do_aes_load 1, \key_len
|
|
add $(1*16), p_out
|
|
and $(~7*16), num_bytes
|
|
jz .Ldo_return2\key_len
|
|
jmp .Lmain_loop2\key_len
|
|
|
|
.Leq2\key_len:
|
|
do_aes_load 2, \key_len
|
|
add $(2*16), p_out
|
|
and $(~7*16), num_bytes
|
|
jz .Ldo_return2\key_len
|
|
jmp .Lmain_loop2\key_len
|
|
|
|
|
|
.Leq3\key_len:
|
|
do_aes_load 3, \key_len
|
|
add $(3*16), p_out
|
|
and $(~7*16), num_bytes
|
|
jz .Ldo_return2\key_len
|
|
jmp .Lmain_loop2\key_len
|
|
|
|
.Leq4\key_len:
|
|
do_aes_load 4, \key_len
|
|
add $(4*16), p_out
|
|
and $(~7*16), num_bytes
|
|
jz .Ldo_return2\key_len
|
|
jmp .Lmain_loop2\key_len
|
|
|
|
.Lgt4\key_len:
|
|
cmp $(6*16), tmp
|
|
jg .Leq7\key_len
|
|
je .Leq6\key_len
|
|
|
|
.Leq5\key_len:
|
|
do_aes_load 5, \key_len
|
|
add $(5*16), p_out
|
|
and $(~7*16), num_bytes
|
|
jz .Ldo_return2\key_len
|
|
jmp .Lmain_loop2\key_len
|
|
|
|
.Leq6\key_len:
|
|
do_aes_load 6, \key_len
|
|
add $(6*16), p_out
|
|
and $(~7*16), num_bytes
|
|
jz .Ldo_return2\key_len
|
|
jmp .Lmain_loop2\key_len
|
|
|
|
.Leq7\key_len:
|
|
do_aes_load 7, \key_len
|
|
add $(7*16), p_out
|
|
and $(~7*16), num_bytes
|
|
jz .Ldo_return2\key_len
|
|
jmp .Lmain_loop2\key_len
|
|
|
|
.Lmult_of_8_blks\key_len:
|
|
.if (\key_len != KEY_128)
|
|
vmovdqa 0*16(p_keys), xkey0
|
|
vmovdqa 4*16(p_keys), xkey4
|
|
vmovdqa 8*16(p_keys), xkey8
|
|
vmovdqa 12*16(p_keys), xkey12
|
|
.else
|
|
vmovdqa 0*16(p_keys), xkey0
|
|
vmovdqa 3*16(p_keys), xkey4
|
|
vmovdqa 6*16(p_keys), xkey8
|
|
vmovdqa 9*16(p_keys), xkey12
|
|
.endif
|
|
.align 16
|
|
.Lmain_loop2\key_len:
|
|
/* num_bytes is a multiple of 8 and >0 */
|
|
do_aes_noload 8, \key_len
|
|
add $(8*16), p_out
|
|
sub $(8*16), num_bytes
|
|
jne .Lmain_loop2\key_len
|
|
|
|
.Ldo_return2\key_len:
|
|
/* return updated IV */
|
|
vpshufb xbyteswap, xcounter, xcounter
|
|
vmovdqu xcounter, (p_iv)
|
|
RET
|
|
.endm
|
|
|
|
/*
|
|
* routine to do AES128 CTR enc/decrypt "by8"
|
|
* XMM registers are clobbered.
|
|
* Saving/restoring must be done at a higher level
|
|
* aes_ctr_enc_128_avx_by8(void *in, void *iv, void *keys, void *out,
|
|
* unsigned int num_bytes)
|
|
*/
|
|
SYM_FUNC_START(aes_ctr_enc_128_avx_by8)
|
|
/* call the aes main loop */
|
|
do_aes_ctrmain KEY_128
|
|
|
|
SYM_FUNC_END(aes_ctr_enc_128_avx_by8)
|
|
|
|
/*
|
|
* routine to do AES192 CTR enc/decrypt "by8"
|
|
* XMM registers are clobbered.
|
|
* Saving/restoring must be done at a higher level
|
|
* aes_ctr_enc_192_avx_by8(void *in, void *iv, void *keys, void *out,
|
|
* unsigned int num_bytes)
|
|
*/
|
|
SYM_FUNC_START(aes_ctr_enc_192_avx_by8)
|
|
/* call the aes main loop */
|
|
do_aes_ctrmain KEY_192
|
|
|
|
SYM_FUNC_END(aes_ctr_enc_192_avx_by8)
|
|
|
|
/*
|
|
* routine to do AES256 CTR enc/decrypt "by8"
|
|
* XMM registers are clobbered.
|
|
* Saving/restoring must be done at a higher level
|
|
* aes_ctr_enc_256_avx_by8(void *in, void *iv, void *keys, void *out,
|
|
* unsigned int num_bytes)
|
|
*/
|
|
SYM_FUNC_START(aes_ctr_enc_256_avx_by8)
|
|
/* call the aes main loop */
|
|
do_aes_ctrmain KEY_256
|
|
|
|
SYM_FUNC_END(aes_ctr_enc_256_avx_by8)
|